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CN115682369A - Control method and device of air conditioner, air conditioner and storage medium - Google Patents

Control method and device of air conditioner, air conditioner and storage medium Download PDF

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Publication number
CN115682369A
CN115682369A CN202211370997.0A CN202211370997A CN115682369A CN 115682369 A CN115682369 A CN 115682369A CN 202211370997 A CN202211370997 A CN 202211370997A CN 115682369 A CN115682369 A CN 115682369A
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China
Prior art keywords
air conditioner
temperature
control mode
mode
control
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CN202211370997.0A
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Chinese (zh)
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CN115682369B (en
Inventor
陈锐东
廖永富
蔡雨轩
程春雨
刘雷明
邹云辉
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a control method and a control device of an air conditioner, the air conditioner and a storage medium, wherein the method comprises the following steps: acquiring the indoor environment temperature, the indoor environment humidity and the indoor heat exchanger pipe temperature of an air conditioner; if the indoor environment temperature of the air conditioner is determined to be higher than the first set temperature, and/or the indoor environment humidity is determined to be higher than the first set humidity, and/or the temperature difference between the indoor environment temperature and the pipe temperature of the indoor heat exchanger is determined to be higher than the second set temperature, controlling the air conditioner to continuously operate in the first refrigeration mode; and if the indoor environment temperature is determined to be less than or equal to the first set temperature, the indoor environment humidity is determined to be less than or equal to the first set humidity, and the temperature difference between the indoor environment temperature and the pipe temperature of the indoor heat exchanger is determined to be less than or equal to the second set temperature, controlling the air conditioner to enter a second refrigeration mode according to the indoor environment temperature, the indoor environment humidity and the dew point temperature. According to the scheme, the running state of the air conditioner is adjusted according to the air humidity state, so that the humidity of a room is reasonably controlled, and the safety is improved.

Description

Control method and device of air conditioner, air conditioner and storage medium
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a control method and device of an air conditioner, the air conditioner and a storage medium, in particular to a control method and device of refrigeration and dehumidification capacity of the air conditioner, the air conditioner and the storage medium used in places such as a machine room and an equipment room.
Background
In special places such as machine rooms and equipment rooms, due to the particularity of the use environment, the relative humidity of air in the room is required to be kept within a proper range, if the humidity is too low, static electricity is easy to generate, and certain influence on precision equipment can be caused in serious cases; if the humidity is too high, condensation is likely to occur, and in severe cases, short circuits may be caused in electronic devices (e.g., electrical components or controllers). Therefore, in the case of air conditioning, it is necessary to reduce the amount of dehumidification as much as possible when the air conditioning is used in a special place such as a machine room or an equipment room.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control method and device of an air conditioner, the air conditioner and a storage medium, which are used for solving the problems that static electricity is easy to generate if the humidity is too low and condensation is easy to generate to cause short circuit of electronic devices if the humidity is too high in the air conditioner refrigeration situation, and the safety is influenced because the humidity of a room is controlled unreasonably, and the effect of improving the safety by adjusting the operation state of the air conditioner according to the air humidity state to reasonably control the humidity of the room is achieved.
The invention provides a control method of an air conditioner, which comprises the following steps: under the condition that the air conditioner operates in a first refrigeration mode, acquiring the indoor environment temperature of the air conditioner, acquiring the indoor environment humidity of the air conditioner, and acquiring the pipe temperature of an indoor heat exchanger of the air conditioner; determining whether an indoor ambient temperature of the air conditioner is less than or equal to a first set temperature, determining whether an indoor ambient humidity of the air conditioner is less than or equal to a first set humidity, and determining whether a temperature difference between the indoor ambient temperature of the air conditioner and a tube temperature of an indoor heat exchanger of the air conditioner is less than or equal to a second set temperature; the first set temperature is greater than the second set temperature; if the indoor environment temperature of the air conditioner is determined to be higher than a first set temperature, and/or the indoor environment humidity of the air conditioner is determined to be higher than the first set humidity, and/or the temperature difference value between the indoor environment temperature of the air conditioner and the temperature of an indoor heat exchanger pipe of the air conditioner is determined to be higher than a second set temperature, controlling the air conditioner to continuously operate in a first refrigeration mode; if the indoor environment temperature of the air conditioner is determined to be less than or equal to a first set temperature, the indoor environment humidity of the air conditioner is determined to be less than or equal to a first set humidity, and the temperature difference between the indoor environment temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is determined to be less than or equal to a second set temperature, controlling the air conditioner to enter a second refrigeration mode according to the indoor environment temperature of the air conditioner, the indoor environment humidity of the air conditioner and the dew point temperature of the air conditioner; and the dehumidification capacity of the air conditioner in the second refrigeration mode is smaller than that of the air conditioner in the first refrigeration mode.
In some embodiments, controlling the air conditioner to enter the second cooling mode according to the indoor ambient temperature of the air conditioner, the indoor ambient humidity of the air conditioner, and the dew point temperature of the air conditioner includes: determining the dew point temperature of the air conditioner according to the indoor environment temperature and the indoor environment humidity of the air conditioner; controlling the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner, so that the air conditioner operates in a second refrigeration mode, and the dehumidification amount of the air conditioner is reduced and controlled under the condition that the refrigeration requirement of the environment where the air conditioner is located is met; the first control mode is a control mode for controlling the air conditioner to maintain the current operation state; the second control mode is a control mode for controlling the rotating speed of the inner fan of the air conditioner to be increased in a mode of increasing the first set rotating speed for a set time under the condition that the rotating speed of the inner fan of the air conditioner does not reach the set maximum rotating speed, and the rotating speed of the inner fan of the air conditioner is increased to the set maximum rotating speed; the third control mode is a control mode for controlling the rotation speed of the external fan of the air conditioner to be reduced by a second set rotation speed for a set time and to be reduced to the set minimum rotation speed at the minimum when the rotation speed of the external fan of the air conditioner does not reach the set minimum rotation speed; the fourth control mode is a control mode which controls the target exhaust temperature of the compressor of the air conditioner to be reduced according to a mode of reducing the first temperature threshold value for a set time, and is reduced to the lowest temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value; the fifth control mode is a control mode for controlling the frequency of the compressor of the air conditioner to be reduced by a first set frequency according to a set time, and to be reduced to a frequency difference between an initial target frequency of the compressor of the air conditioner and a second set frequency at the lowest.
In some embodiments, controlling the air conditioner to operate in at least one of a first control manner, a second control manner, a third control manner, a fourth control manner and a fifth control manner, which are preset, according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner includes: determining whether a temperature difference between a dew point temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a third set temperature; if the temperature difference between the dew point temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is determined to be greater than or equal to a third set temperature, controlling the air conditioner to operate in at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner; if the temperature difference between the dew point temperature of the air conditioner and the temperature of the pipe of the indoor heat exchanger of the air conditioner is determined to be smaller than a third set temperature, the air conditioner is continuously controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the pipe of the indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner.
In some embodiments, controlling the air conditioner to operate in at least one of the first control manner, the second control manner, the third control manner, the fourth control manner, and the fifth control manner according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner further includes: determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than a temperature difference between a dew point temperature of the air conditioner and a third set temperature and is less than a temperature sum between the dew point temperature of the air conditioner and a fourth set temperature; if the temperature of an indoor heat exchanger pipe of the air conditioner is determined to be greater than the temperature difference between the dew point temperature of the air conditioner and a third set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature, controlling the air conditioner to operate in at least one of the second control mode and the fourth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner; if the temperature difference between the dew point temperature of the air conditioner and a third set temperature of the indoor heat exchanger pipe Wen Xiaoyu of the air conditioner is determined, or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum between the dew point temperature of the air conditioner and a fourth set temperature, the air conditioner is controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode again according to the temperature of the indoor heat exchanger pipe of the air conditioner and the dew point temperature of the air conditioner.
In some embodiments, controlling the air conditioner to operate in at least one of the first control manner, the second control manner, the third control manner, the fourth control manner, and the fifth control manner according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner further includes: determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a temperature sum between a dew point temperature of the air conditioner and a fourth set temperature and is less than a temperature sum between a dew point temperature of the air conditioner and a fifth set temperature; if the temperature of an indoor heat exchanger tube of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and the fourth set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and the fifth set temperature, controlling the air conditioner to operate in the first control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner; and if the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature is determined or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and a fifth set temperature, controlling the air conditioner to operate in a second refrigeration mode according to the operating condition of the air conditioner on at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode.
In some embodiments, controlling the operation of the air conditioner in the second cooling mode according to the operation condition of the air conditioner on at least one of the second control manner, the third control manner, the fourth control manner and the fifth control manner includes: determining whether the air conditioner has performed at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner; if it is determined that at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode has been executed by the air conditioner, controlling the air conditioner to execute the corresponding control mode in reverse for the corresponding control mode of the second control mode, the third control mode, the fourth control mode and the fifth control mode that has been executed by the air conditioner, and then controlling the air conditioner to exit from the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner; and if the air conditioner is determined not to execute any control mode of the second control mode, the third control mode, the fourth control mode and the fifth control mode, controlling the air conditioner to exit the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor ambient temperature and the indoor ambient humidity of the air conditioner.
In some embodiments, controlling the air conditioner to exit the second cooling mode and return to performing the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner includes: determining whether the indoor environment temperature of the air conditioner is greater than or equal to a sixth set temperature, determining whether the indoor environment humidity of the air conditioner is greater than a second set humidity, and determining whether a temperature difference between the indoor environment temperature of the air conditioner and the set temperature is greater than a seventh set temperature; the sixth set temperature is greater than the seventh set temperature; if the indoor environment temperature of the air conditioner is determined to be greater than or equal to a sixth set temperature, the indoor environment humidity of the air conditioner is determined to be greater than a second set humidity, and a temperature difference value between the indoor environment temperature of the air conditioner and the set temperature is determined to be greater than a seventh set temperature, the air conditioner is controlled to exit from the second refrigeration mode and return to the first refrigeration mode; and if the indoor environment temperature of the air conditioner is determined to be less than a sixth set temperature, and/or the indoor environment humidity of the air conditioner is determined to be less than or equal to a second set humidity, and/or the temperature difference between the indoor environment temperature of the air conditioner and the set temperature is determined to be less than or equal to a seventh set temperature, returning to control the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner again so as to enable the air conditioner to continue to operate in the second refrigeration mode, and achieving the effect of reducing and controlling the dehumidification amount of the air conditioner under the condition that the refrigeration requirement of the environment where the air conditioner is located is met.
In accordance with the above method, another aspect of the present invention provides a control apparatus for an air conditioner, comprising: the air conditioner comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is configured to acquire the indoor environment temperature of the air conditioner, the indoor environment humidity of the air conditioner and the indoor heat exchanger pipe temperature of the air conditioner under the condition that the air conditioner operates in a first cooling mode; a control unit configured to determine whether an indoor ambient temperature of the air conditioner is less than or equal to a first set temperature, determine whether an indoor ambient humidity of the air conditioner is less than or equal to a first set humidity, and determine whether a temperature difference between the indoor ambient temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is less than or equal to a second set temperature; the first set temperature is greater than the second set temperature; the control unit is further configured to control the air conditioner to continue to operate in the first cooling mode if the indoor environment temperature of the air conditioner is determined to be greater than the first set temperature, and/or the indoor environment humidity of the air conditioner is determined to be greater than the first set humidity, and/or the temperature difference between the indoor environment temperature of the air conditioner and the temperature of the pipe of the indoor heat exchanger of the air conditioner is determined to be greater than the second set temperature; the control unit is further configured to control the air conditioner to enter a second refrigeration mode according to the indoor environment temperature of the air conditioner, the indoor environment humidity of the air conditioner and the dew point temperature of the air conditioner if the indoor environment temperature of the air conditioner is determined to be less than or equal to a first set temperature, the indoor environment humidity of the air conditioner is determined to be less than or equal to a first set humidity, and the temperature difference between the indoor environment temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is determined to be less than or equal to a second set temperature; and the dehumidification capacity of the air conditioner in the second refrigeration mode is smaller than that of the air conditioner in the first refrigeration mode.
In some embodiments, the controlling unit controls the air conditioner to enter the second cooling mode according to an indoor ambient temperature of the air conditioner, an indoor ambient humidity of the air conditioner, and a dew point temperature of the air conditioner, including: determining the dew point temperature of the air conditioner according to the indoor environment temperature and the indoor environment humidity of the air conditioner; controlling the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner, so that the air conditioner operates in a second refrigeration mode, and the dehumidification amount of the air conditioner is reduced and controlled under the condition that the refrigeration requirement of the environment where the air conditioner is located is met; the first control mode is a control mode for controlling the air conditioner to maintain the current operation state; the second control mode is a control mode for controlling the rotating speed of the inner fan of the air conditioner to be increased in a mode of increasing the first set rotating speed for a set time under the condition that the rotating speed of the inner fan of the air conditioner does not reach the set maximum rotating speed, and the rotating speed of the inner fan of the air conditioner is increased to the set maximum rotating speed; the third control mode is a control mode for controlling the rotation speed of the external fan of the air conditioner to be reduced by a second set rotation speed according to a set time when the rotation speed of the external fan of the air conditioner does not reach the set lowest rotation speed, and the rotation speed of the external fan of the air conditioner is reduced to the set lowest rotation speed; the fourth control mode is a control mode for controlling the target exhaust temperature of the compressor of the air conditioner to be reduced according to a mode of reducing the first temperature threshold value in a set time, and the target exhaust temperature is reduced to the lowest temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value; the fifth control mode is a control mode for controlling the frequency of the compressor of the air conditioner to be reduced by a first set frequency according to a set time, and to be reduced to a frequency difference between an initial target frequency of the compressor of the air conditioner and a second set frequency at the lowest.
In some embodiments, the controlling unit, according to a temperature of an indoor heat exchanger tube of the air conditioner and a dew point temperature of the air conditioner, controls the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode, which are preset, and includes: determining whether a temperature difference between a dew point temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a third set temperature; if the temperature difference between the dew point temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is determined to be greater than or equal to a third set temperature, controlling the air conditioner to operate in at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner; if the temperature difference between the dew point temperature of the air conditioner and the temperature of the pipe of the indoor heat exchanger of the air conditioner is determined to be smaller than a third set temperature, the air conditioner is continuously controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the pipe of the indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner.
In some embodiments, the controlling unit controls the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to an indoor heat exchanger tube temperature of the air conditioner and a dew point temperature of the air conditioner, and further includes: determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than a temperature difference between a dew point temperature of the air conditioner and a third set temperature and is less than a temperature sum between the dew point temperature of the air conditioner and a fourth set temperature; if the temperature of an indoor heat exchanger pipe of the air conditioner is determined to be greater than the temperature difference between the dew point temperature of the air conditioner and a third set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature, controlling the air conditioner to operate in at least one of the second control mode and the fourth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner; if the temperature difference between the dew point temperature of the air conditioner and a third set temperature of the indoor heat exchanger pipe Wen Xiaoyu of the air conditioner is determined, or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum between the dew point temperature of the air conditioner and a fourth set temperature, the air conditioner is controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode again according to the temperature of the indoor heat exchanger pipe of the air conditioner and the dew point temperature of the air conditioner.
In some embodiments, the controlling unit controls the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to an indoor heat exchanger tube temperature of the air conditioner and a dew point temperature of the air conditioner, and further includes: determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a temperature sum between a dew point temperature of the air conditioner and a fourth set temperature and is less than a temperature sum between the dew point temperature of the air conditioner and a fifth set temperature; if the temperature of an indoor heat exchanger tube of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and the fourth set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and the fifth set temperature, controlling the air conditioner to operate in the first control mode, and then controlling the air conditioner to exit the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner; and if the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature is determined or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and a fifth set temperature, controlling the air conditioner to operate in a second refrigeration mode according to the operating condition of the air conditioner on at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode.
In some embodiments, the controlling unit controls the air conditioner to operate in a second cooling mode according to an operation condition of the air conditioner on at least one of the second control manner, the third control manner, the fourth control manner and the fifth control manner, and the controlling unit includes: determining whether the air conditioner has performed at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner; if it is determined that at least one of the second control manner, the third control manner, the fourth control manner and the fifth control manner has been executed by the air conditioner, controlling the air conditioner to reversely execute a corresponding control manner of the second control manner, the third control manner, the fourth control manner and the fifth control manner that has been executed by the air conditioner, and then controlling the air conditioner to exit a second cooling mode and return to execute a first cooling mode according to an indoor ambient temperature of the air conditioner and an indoor ambient humidity of the air conditioner; and if it is determined that the air conditioner does not execute any control mode of the second control mode, the third control mode, the fourth control mode and the fifth control mode, controlling the air conditioner to exit the second cooling mode and return to execute the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner.
In some embodiments, the controlling unit, controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner, includes: determining whether the indoor environment temperature of the air conditioner is greater than or equal to a sixth set temperature, determining whether the indoor environment humidity of the air conditioner is greater than a second set humidity, and determining whether a temperature difference between the indoor environment temperature of the air conditioner and the set temperature is greater than a seventh set temperature; the sixth set temperature is greater than the seventh set temperature; if the indoor environment temperature of the air conditioner is determined to be greater than or equal to a sixth set temperature, the indoor environment humidity of the air conditioner is determined to be greater than a second set humidity, and a temperature difference value between the indoor environment temperature of the air conditioner and the set temperature is determined to be greater than a seventh set temperature, the air conditioner is controlled to exit from the second refrigeration mode and return to the first refrigeration mode; and if the indoor environment temperature of the air conditioner is determined to be less than a sixth set temperature, and/or the indoor environment humidity of the air conditioner is determined to be less than or equal to a second set humidity, and/or the temperature difference between the indoor environment temperature of the air conditioner and the set temperature is determined to be less than or equal to a seventh set temperature, returning to control the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner again so as to enable the air conditioner to continue to operate in the second refrigeration mode, and achieving the effect of reducing and controlling the dehumidification amount of the air conditioner under the condition that the refrigeration requirement of the environment where the air conditioner is located is met.
In accordance with another aspect of the present invention, there is provided an air conditioner including: the control device of the air conditioner described above.
In line with the above method, a further aspect of the present invention provides a storage medium, which includes a stored program, wherein when the program runs, a device in which the storage medium is located is controlled to execute the control method of the air conditioner described above.
Therefore, according to the scheme of the invention, the indoor environment temperature and the relative humidity are determined by collecting the dry bulb temperature and the relative humidity at the air inlet of the air conditioner and calculating the corresponding dew point temperature, so that the dehumidification capacity is reduced under the condition of higher indoor environment temperature and higher relative humidity, and the refrigeration capacity is improved for refrigeration; under the condition that the indoor temperature is lower or the relative humidity is lower, the evaporation temperature is controlled to be higher than the dew point temperature so as to carry out refrigeration but not dehumidification, and therefore, the running state of the air conditioner is adjusted according to the air humidity state, so that the humidity of a room is reasonably controlled, and the safety is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of the method for controlling the air conditioner to enter the second cooling mode according to the indoor ambient temperature, the indoor ambient humidity and the dew point temperature;
FIG. 3 is a schematic flow chart illustrating an embodiment of a first process for controlling an air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode according to a temperature of an indoor heat exchanger tube and a dew point temperature in the method of the present invention;
FIG. 4 is a schematic flow chart illustrating an embodiment of a second process for controlling the operation of the air conditioner in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the tube temperature of the indoor heat exchanger and the dew point temperature in the method of the present invention;
FIG. 5 is a schematic flow chart illustrating an embodiment of a third process for controlling the operation of the air conditioner in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the tube temperature of the indoor heat exchanger and the dew point temperature in the method of the present invention;
FIG. 6 is a schematic flow chart illustrating an embodiment of a fourth process for controlling the operation of the air conditioner in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the tube temperature of the indoor heat exchanger and the dew point temperature in the method of the present invention;
FIG. 7 is a flowchart illustrating an embodiment of a method for controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature and the indoor ambient humidity;
fig. 8 is a schematic structural diagram of a control device of an air conditioner according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating an embodiment of a method for controlling cooling and dehumidifying capacity of an air conditioner used in a machine room, an equipment room, or the like.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
102-an obtaining unit; 104-control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The air conditioner aims at the problem that the dehumidification capacity needs to be reduced as much as possible when the air conditioner is used in special places such as a machine room and an equipment room and the like and used for air conditioning refrigeration. In some schemes, the problem of transitional dehumidification is solved, the constant humidity scheme is adopted with better effect, but the constant humidity scheme needs to be added with a corresponding humidifying device, and the cost is higher. In other schemes, the scheme of improving the air volume is adopted, one is to directly improve the rotating speed of the motor, the scheme can only be slightly improved, the motor stalling can be caused because the continuous improvement exceeds the load capacity of the motor, and the other is to increase the specification of the motor and the specification of the fan blade, and the scheme also needs to increase the cost.
Therefore, because the 'constant humidity' air conditioner has high manufacturing cost and is difficult to popularize and use, in practical engineering application, the air conditioner of the common base station is mainly used, and in related schemes, the way of reducing the refrigeration and dehumidification capacity of the air conditioner of the base station is generally to improve the evaporation temperature by adopting a method of improving the air volume of an internal fan so as to reduce the refrigeration and dehumidification capacity. However, the air volume cannot be increased without limit due to the air duct structure, the motor efficiency, the noise and the like. Therefore, a new control method is needed to better adjust the refrigeration and dehumidification capacity of the air conditioner used in special occasions such as machine rooms and equipment rooms. Therefore, the scheme of the invention provides a control method of an air conditioner, in particular to a control method of refrigeration and dehumidification capacity of the air conditioner used in places such as a machine room, an equipment room and the like, so that the dehumidification capacity can be effectively reduced even no dehumidification is realized under the condition of not increasing the cost by adopting a software control scheme, and the problem of over-dry air caused by refrigeration and dehumidification is solved by adopting a low-cost mode.
Considering that static electricity is relatively easily generated when the air relative humidity is less than 30% rh in general, it is relatively appropriate in the electronics industry to require the ambient humidity to be 40% rh to 70% rh. In the case of air conditioning refrigeration, the indoor ambient temperature is reduced, and if the moisture content is not changed, the relative humidity is increased, so that a certain dehumidification amount is allowed, and the size of the dehumidification amount depends on the evaporation temperature, the ambient temperature and the ambient humidity. Therefore, the scheme of the invention is based on the multi-parameter coupling control technology, adjusts the running state of the air conditioner according to the air humidity state, reduces the refrigeration dehumidification capacity, avoids excessive dehumidification and effectively reduces the dehumidification capacity under the refrigeration condition.
According to an embodiment of the present invention, a method for controlling an air conditioner is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The control method of the air conditioner may include: step S110 to step S140.
In step S110, in a case where the air conditioner operates in the first cooling mode, an indoor ambient temperature of the air conditioner, an indoor ambient humidity of the air conditioner, and an indoor heat exchanger tube temperature of the air conditioner are acquired. Wherein, the indoor environment temperature is indoor temperature T, the indoor environment humidity is indoor relative humidity RH, and the indoor heat exchanger tube Wen Ru intermediate temperature T of the indoor evaporator Inner pipe . The air conditioner operates in a first refrigeration mode, specifically, the air conditioner operates normally according to a set dehumidification amount, namely, the air conditioner operates in a normal refrigeration mode. Is provided withThe fixed dehumidification amount is the dehumidification amount in the case of normal refrigeration in the normal refrigeration mode.
At step S120, it is determined whether the indoor ambient temperature of the air conditioner is less than or equal to a first set temperature, it is determined whether the indoor ambient humidity of the air conditioner is less than or equal to a first set humidity, and it is determined whether a temperature difference between the indoor ambient temperature of the air conditioner and the tube temperature of the indoor heat exchanger of the air conditioner is less than or equal to a second set temperature. The first set temperature is greater than the second set temperature.
At step S130, if it is determined that the indoor ambient temperature of the air conditioner is greater than the first set temperature, and/or it is determined that the indoor ambient humidity of the air conditioner is greater than the first set humidity, and/or it is determined that the temperature difference between the indoor ambient temperature of the air conditioner and the temperature of the tube of the indoor heat exchanger of the air conditioner is greater than the second set temperature, the air conditioner is controlled to continue to operate in the first cooling mode.
At step S140, if it is determined that the indoor environment temperature of the air conditioner is less than or equal to a first set temperature, the indoor environment humidity of the air conditioner is less than or equal to a first set humidity, and the temperature difference between the indoor environment temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is less than or equal to a second set temperature, the air conditioner is controlled to enter a second cooling mode, specifically, the air conditioner is controlled to enter a preset low humidity cooling mode, according to the indoor environment temperature of the air conditioner, the indoor environment humidity of the air conditioner, and the dew point temperature of the air conditioner. And the dehumidification capacity of the air conditioner in the second refrigeration mode is smaller than that of the air conditioner in the first refrigeration mode. That is, the low-humidity cooling mode is a cooling mode in which the dehumidification amount is lower than the set dehumidification amount. Or the dehumidification capacity of the air conditioner in the low-humidity refrigeration mode is smaller than that of the air conditioner in the normal refrigeration mode.
Specifically, fig. 9 is a schematic flowchart of an embodiment of a method for controlling the cooling and dehumidifying capacity of an air conditioner used in a machine room, an equipment room, or the like. As shown in fig. 9, the method for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention includes:
and step 11, acquiring the dry bulb temperature of the air inlet of the air conditioner (such as the air inlet of the air conditioner) as the indoor temperature T under the condition that the air conditioner operates in a normal refrigeration mode. And acquiring the relative humidity of the air inlet of the air conditioner (such as the air inlet of the air conditioner) as the indoor relative humidity RH. And acquiring the tube temperature of an indoor heat exchanger of the air conditioner, such as the tube temperature of an indoor evaporator of the air conditioner, and recording as the intermediate temperature T of the indoor evaporator Inner pipe 。
Step 12, judging whether the indoor temperature T and the indoor relative humidity RH simultaneously satisfy the following first to third conditions: if so, entering a low-humidity refrigeration mode, executing the step 13 to the step 16 after entering the low-humidity refrigeration mode, otherwise, not entering the low-humidity refrigeration mode but continuing to operate according to a normal refrigeration mode.
The first condition is that: the indoor temperature T is less than or equal to a first set temperature T 1 . Wherein the first set temperature T 1 It can be chosen between 25 ℃ and 35 ℃ and preferably between 30 ℃.
The second condition is that: indoor relative humidity RH is less than or equal to first set humidity RH 1 . Wherein the first set humidity RH 1 It may be chosen from 70% to 90%, preferably 80%.
A third condition: indoor temperature T-set temperature T Is provided with Not more than the second set temperature T 2 . Wherein the second set temperature T 2 It can be chosen between 2 ℃ and 4 ℃ and preferably between 3 ℃.
Here, the current indoor temperature T, the indoor relative humidity RH and the set temperature T are determined Is provided with And the difference value of the indoor temperature T is used for judging whether to enter a low-temperature refrigeration mode or not so as to carry out low-humidity operation under the condition of ensuring normal indoor refrigeration requirement and avoid sacrificing normal capacity requirement (namely normal indoor refrigeration requirement) for reducing the dehumidification effect.
According to the control method for the refrigeration and dehumidification capacity of the air conditioner used in the places such as the machine room, the equipment room and the like, provided by the scheme of the invention, the dew point temperature in the state can be calculated by collecting the dry bulb temperature and the relative humidity of the air inlet part of the air conditioner, and under the conditions of high indoor environment temperature and high relative humidity, the humidity can be reduced by appropriate dehumidification, so that the refrigeration capacity is improved, and the effect of rapid cooling is achieved. Under the condition of low temperature or low relative humidity, the evaporation temperature is controlled to be higher than the dew point temperature so as to achieve the effect of refrigeration without dehumidification. The temperature of the machine room air conditioner is controlled between 25 ℃ and 35 ℃ under the ordinary refrigeration condition according to the use environment, so that the requirements of the machine room are met. Like this, through based on multi-parameter coupling control technique, according to air humidity state adjustment air conditioner running state, reduce the refrigeration dehumidification, avoid excessive dehumidification, effectively reduced dehumidification under the refrigeration condition, solved because of the refrigeration dehumidification leads to the too dry technical problem of air to adopt low-cost mode to solve the refrigeration dehumidification and lead to the too dry problem of air.
In some embodiments, in step S140, a specific process of entering the second cooling mode by the air conditioner is controlled according to the indoor ambient temperature of the air conditioner, the indoor ambient humidity of the air conditioner, and the dew point temperature of the air conditioner, which is described in the following exemplary description.
Referring to fig. 2, a flowchart of an embodiment of the method for controlling the air conditioner to enter the second cooling mode according to the indoor ambient temperature, the indoor ambient humidity, and the dew point temperature further illustrates a specific process of controlling the air conditioner to enter the second cooling mode according to the indoor ambient temperature, the indoor ambient humidity, and the dew point temperature in step S140, including: step S210 to step S220.
Step S210, determining the dew point temperature of the air conditioner according to the indoor environment temperature and the indoor environment humidity of the air conditioner, and recording the dew point temperature as the dew point temperature T Dew 。
Step S220, controlling the air conditioner to enter a second refrigeration mode according to the pipe temperature of the indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner, specifically controlling the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset, so that the air conditioner operates in the second refrigeration mode, and realizing the reduction control of the dehumidification amount of the air conditioner under the condition of meeting the refrigeration requirement of the environment where the air conditioner is located.
In the second cooling mode of the air conditioner, a first control manner, such as control manner a, a second control manner, such as control manner B, a third control manner, such as control manner C, a fourth control manner, such as control manner D, and a fifth control manner, such as control manner E, are provided, and the following exemplary description may be specifically referred to.
The first control mode is a control mode for controlling the air conditioner to maintain the current operation state. Specifically, the control mode a is to control the air conditioner to maintain the current operation state. By executing the control mode A, the adjustment of the air conditioner control system is reduced, and the stability of the air conditioner control system can be maintained.
The second control mode is a control mode for controlling the rotation speed of the internal fan of the air conditioner to be increased by increasing the first set rotation speed for a set time and to be increased to the set maximum rotation speed when the rotation speed of the internal fan of the air conditioner does not reach the set maximum rotation speed. Specifically, the control mode B is to increase the first set rotating speed R per minute if the current rotating speed of the inner fan of the air conditioner is not the set maximum rotating speed a (preferably 30 rpm) is set to the maximum set upper limit of the rotation speed, and the rotation speed of the internal fan is increased. Wherein the first set rotation speed R a 20 to 40rpm, preferably 30rpm, may be selected. Here, the control mode B is executed, and for a certain air conditioner control system, the upper limit that the rotation speed of the fan can reach is fixed, so that the rotation speed of the inner fan can be increased under the condition that the current rotation speed does not reach the upper limit, thereby increasing the evaporation temperature, and after the evaporation temperature is increased, the condensation of air on the evaporator can be reduced.
The third control mode is a control mode for controlling the rotation speed of the external fan of the air conditioner to be reduced by a second set rotation speed for a set time and to be reduced to the set minimum rotation speed, when the rotation speed of the external fan of the air conditioner does not reach the set minimum rotation speed. Specifically, the control mode C is to decrease the second setting per minute if the current outer fan rotation speed is not the lowest rotation speedRotational speed R b The speed (preferably 30 rpm) is reduced to the set lower limit of the rotation speed, of course. Wherein the second set rotation speed R b The rpm may be 20 to 40rpm, preferably 30rpm. Here, control mode C is executed, and similarly, the lower limit rotation speed that the motor can reach is also determined, and too low rotation speed easily causes stall, and if the current rotation speed does not reach the lower limit, the rotation speed of the outer fan can be reduced, so that the outlet temperature of the condenser is increased, and after the outlet temperature of the condenser is increased, under the same throttling condition, the temperature is increased after throttling, the evaporation temperature is increased, and the condensation of air on the evaporator can be reduced.
And the fourth control mode is a control mode of controlling the target exhaust temperature of the compressor of the air conditioner to be reduced according to a mode of reducing the first temperature threshold value for a set time under the condition that the target exhaust temperature of the compressor of the air conditioner does not reach the temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value, and the target exhaust temperature of the compressor of the air conditioner is reduced to the temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value at the lowest. Specifically, the control mode D is to reduce the first temperature threshold T per minute a Is reduced to at most the initial target discharge temperature of the compressor-the second temperature threshold T b . Wherein the first temperature threshold T a It can be selected from 0.1 ℃ to 0.3 ℃ and preferably 0.2 ℃. Second temperature threshold T b It can be chosen between 4 ℃ and 6 ℃ and preferably between 5 ℃. Here, the control method D is executed to reduce the target discharge temperature of the compressor, that is, to reduce the throttle amount of the throttle device in the air conditioner, so that the temperature of the throttled refrigerant becomes high, and the evaporation temperature can be increased to reduce the condensation of air on the evaporator. Of course, the target discharge temperature of the compressor cannot be lowered down without limit, and the transient lowering easily causes liquid slugging, so that the minimum value of the target discharge temperature lowering of the compressor is limited.
The fifth control mode is to control the air conditioner when the frequency of the compressor of the air conditioner does not reach the frequency difference between the initial target frequency and the second set frequency of the compressor of the air conditionerThe compressor frequency is reduced according to the set time by a first set frequency, and is reduced to the lowest frequency difference between the initial target frequency and a second set frequency of the compressor of the air conditioner. Specifically, the control mode E is to decrease the first setting frequency F every setting period, such as 10min a (preferably 2 Hz) speed reduces the operating frequency, up to the initial target frequency-the second set frequency F b (preferably 10 Hz). Here, the control mode E is executed to reduce the operation frequency, reduce the work output of the compressor, reduce the circulation flow, reduce the cooling capacity of the air conditioner, increase the evaporation temperature, and reduce the condensation of the air on the evaporator. The reduction in the frequency of the compressor reduces the cooling capacity.
In some embodiments, the controlling the air conditioner to operate in at least one of a first control manner, a second control manner, a third control manner, a fourth control manner and a fifth control manner, which are preset, according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner in step S220 includes: controlling the air conditioner to operate in a first process of at least one of a first control manner, a second control manner, a third control manner, a fourth control manner, and a fifth control manner according to the indoor heat exchanger tube temperature and the dew point temperature, see the following exemplary description.
Referring to the flowchart of an embodiment of a first process of controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube and the dew point temperature in the method of the present invention shown in fig. 3, a specific process of controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube and the dew point temperature in step S220 is further described, which includes: step S310 to step S330.
Step S310, it is determined whether a temperature difference between a dew point temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a third set temperature.
Step S320, if it is determined that the temperature difference between the dew point temperature of the air conditioner and the temperature of the tube of the indoor heat exchanger of the air conditioner is greater than or equal to a third set temperature, controlling the air conditioner to operate in at least one of the second control mode, the third control mode, the fourth control mode, and the fifth control mode to increase the evaporating temperature of the indoor heat exchanger of the air conditioner, and then controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner.
Step S330, if it is determined that the temperature difference between the dew point temperature of the air conditioner and the temperature of the indoor heat exchanger tube of the air conditioner is less than a third set temperature, continuing to control the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner.
As shown in fig. 9, the method for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 13, judging whether the dew point temperature T is met Dew -a third set temperature T 3 Not less than the intermediate temperature T of the indoor evaporator Inner tube : if yes, executing at least one of control modes B, C, D, E to realize the increase of the evaporation temperature by one or more modes of increasing the rotation speed of the inner fan, reducing the rotation speed of the outer fan, reducing the exhaust temperature and reducing the frequency, then executing step 17, otherwise executing step 14. Intermediate temperature T of indoor evaporator Inner tube Is the coil temperature of the indoor heat exchanger of the air conditioner. Wherein the third set temperature T 3 It can be chosen between 2 ℃ and 4 ℃ and preferably between 3 ℃.
In some embodiments, the controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner in step S220, that is, the controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner in step S330 further includes: and controlling the air conditioner to operate in a second process of at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the pipe temperature and the dew point temperature of the indoor heat exchanger.
With reference to the flowchart of an embodiment of a second process of controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the tube temperature of the indoor heat exchanger and the dew point temperature in the method of the present invention shown in fig. 4, a specific process of controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the tube temperature of the indoor heat exchanger and the dew point temperature in step S220 or step S330 will be further described, which includes: step S410 to step S430.
Step S410, determining whether the tube temperature of the indoor heat exchanger of the air conditioner is greater than a temperature difference between the dew point temperature of the air conditioner and a third set temperature, and is less than a temperature sum between the dew point temperature of the air conditioner and a fourth set temperature.
Step S420, if it is determined that the temperature of the indoor heat exchanger tube of the air conditioner is greater than the temperature difference between the dew point temperature of the air conditioner and the third set temperature and less than the temperature sum between the dew point temperature of the air conditioner and the fourth set temperature, controlling the air conditioner to operate in at least one of the second control mode and the fourth control mode to increase the evaporation temperature of the indoor heat exchanger of the air conditioner, and then controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner.
Step S430, if it is determined that the temperature difference between the dew point temperature of the air conditioner and the third set temperature of the indoor heat exchanger tube Wen Xiaoyu of the air conditioner is greater than or equal to the temperature sum between the dew point temperature of the air conditioner and the fourth set temperature of the air conditioner, continuing to control the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner again.
As shown in fig. 9, the method for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 14, judging whether the dew point temperature T is met Dew + fourth set temperature T 4 Intermediate temperature T of indoor evaporator Inner tube Dew point temperature T Dew -a third set temperature T 3 : if yes, at least one of the control modes B, D is executed, and then step 17 is executed, otherwise step 15 is executed. Wherein the fourth set temperature T 4 It can be selected from 0.5 ℃ to 1.5 ℃ and preferably 1 ℃.
In some embodiments, the controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner in step S220, that is, the controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner again in step S420 further includes: and controlling the air conditioner to operate in a third process of at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the pipe temperature and the dew point temperature of the indoor heat exchanger.
With reference to the flowchart of an embodiment of a third process of controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube and the dew point temperature in the method of the present invention shown in fig. 5, a specific process of controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube and the dew point temperature in step S220 and step S420 will be further described, which includes: step S510 to step S530.
Step S510, determining whether the tube temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the temperature sum between the dew point temperature of the air conditioner and the fourth set temperature, and is less than the temperature sum between the dew point temperature of the air conditioner and the fifth set temperature.
Step S520, if it is determined that the temperature of the tube of the indoor heat exchanger of the air conditioner is greater than or equal to the temperature sum between the dew point temperature of the air conditioner and the fourth set temperature and less than the temperature sum between the dew point temperature of the air conditioner and the fifth set temperature, controlling the air conditioner to operate in the first control mode, and then controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner.
Step S530, if it is determined that the temperature and value between the dew point temperature of the air conditioner and the fourth set temperature of the indoor heat exchanger tube Wen Xiaoyu of the air conditioner are equal to or higher than the temperature and value between the dew point temperature of the air conditioner and the fifth set temperature of the air conditioner, controlling the air conditioner to operate in a second cooling mode according to an operation condition of the air conditioner on at least one of the second control mode, the third control mode, the fourth control mode, and the fifth control mode.
As shown in fig. 9, the method for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 15, judging whether the dew point temperature T is met Dew + fifth set temperature T 5 Intermediate temperature T of indoor evaporator Inner tube Not less than dew point temperature T Dew + fourth set temperature T 4 : if yes, executeAnd the control mode A is followed by the step 17, otherwise, the step 16 is executed. Wherein the fifth set temperature T 5 It can be chosen between 2 ℃ and 4 ℃ and preferably between 3 ℃.
In some embodiments, in step S530, a specific process of the air conditioner operating in the second cooling mode is controlled according to an operation condition of the air conditioner on at least one of the second control manner, the third control manner, the fourth control manner and the fifth control manner, which is described in the following exemplary description.
With reference to the flowchart of an embodiment of a fourth process for controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the tube temperature and the dew point temperature of the indoor heat exchanger in the method of the present invention shown in fig. 6, a specific process of the fourth process for controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the tube temperature and the dew point temperature of the indoor heat exchanger in step S530 is further described, which includes: step S610 to step S630.
Step S610 of determining whether the air conditioner has executed at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner.
Step S620, if it is determined that at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner has been executed by the air conditioner, controlling the air conditioner to reversely execute a corresponding control manner of the second control manner, the third control manner, the fourth control manner, and the fifth control manner that has been executed by the air conditioner, and then controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner.
Step S630, if it is determined that the air conditioner does not execute any of the second control manner, the third control manner, the fourth control manner, and the fifth control manner, controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner.
As shown in fig. 9, the method for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 16, intermediate temperature T of indoor evaporator Inner pipe Not less than dew point temperature T Dew + fifth set temperature T 5 In the case of (3), it is determined whether any of the control methods B, C, D, E has been executed: if any of the operations B, C, D, E have been performed, then the gradual recovery is performed in the reverse logical direction until the initial state is restored, otherwise step 17 is performed.
For example: the reverse execution, taking control B as an example, the operations executed before are: at every minute, the first set rotating speed R is increased a Then, the reverse execution means that the first set rotation speed R is reduced per minute a . Of course, after each execution, i.e. after the Ra rotation speed is reduced, the next execution needs to judge whether the "indoor evaporator intermediate temperature T" is satisfied again Inner tube Not less than dew point temperature T Dew + fifth set temperature T 5 "satisfied execution once again, and unsatisfied execution of the logic.
From step 13 to step 16, the solution of the present invention passes the dew point temperature T Dew With evaporator temperature (e.g. indoor evaporator intermediate temperature T) Inner pipe ) When the difference value is large, a plurality of schemes (such as a control mode B, C, D, E) are required to be synchronously performed so as to accelerate the increase of the evaporation temperature and reduce condensation and dehumidification. When the difference is smaller, the scheme B, D is preferentially adopted, so that the effect of reducing dehumidification can be achieved under the condition of reducing the influence on the refrigeration capacity. When the evaporator temperature (e.g. the indoor evaporator intermediate temperature T) Inner pipe ) Specific dew point temperature T Dew And under high and high conditions, gradually recovering the previous operation to a normal operation state of the prototype or a state without condensation risk, and maintaining the operation state. Thereby, the refrigeration requirement of the environment where the air conditioner is positioned is metAnd if the amount of dehumidification is determined, performing reduction control on the amount of dehumidification of the air conditioner.
In some embodiments, the specific process of exiting the second cooling mode and returning to the first cooling mode in step S320, step S420, step S520 and step S620 is controlled according to the indoor ambient temperature and humidity of the air conditioner, as described in the following exemplary description.
Referring to the flowchart of fig. 7, the specific process of controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature and the indoor ambient humidity in step S320, step S420, step S520, and step S620 is further described, which includes: step S710 to step S730.
Step S710, determining whether the indoor ambient temperature of the air conditioner is greater than or equal to a sixth set temperature, determining whether the indoor ambient humidity of the air conditioner is greater than a second set humidity, and determining whether a temperature difference between the indoor ambient temperature of the air conditioner and the set temperature is greater than a seventh set temperature. The sixth set temperature is greater than the seventh set temperature.
Step S720, if it is determined that the indoor environment temperature of the air conditioner is greater than or equal to the sixth setting temperature, the indoor environment humidity of the air conditioner is greater than the second setting humidity, and the temperature difference between the indoor environment temperature of the air conditioner and the setting temperature is greater than the seventh setting temperature, controlling the air conditioner to exit the second cooling mode and return to the first cooling mode.
Step S730, if it is determined that the indoor environment temperature of the air conditioner is less than a sixth set temperature, and/or it is determined that the indoor environment humidity of the air conditioner is less than or equal to a second set humidity, and/or it is determined that the temperature difference between the indoor environment temperature of the air conditioner and the set temperature is less than or equal to a seventh set temperature, returning to control the air conditioner to continue to enter a second refrigeration mode according to the pipe temperature of the indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner, specifically, controlling the air conditioner to operate in at least one of a first control manner, a second control manner, a third control manner, a fourth control manner, and a fifth control manner, which are preset, so that the air conditioner continues to operate in the second refrigeration mode, and implementing the reduction control of the dehumidification amount of the air conditioner under the condition that the refrigeration requirement of the environment where the air conditioner is located is met.
Specifically, as shown in fig. 9, the method for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: and step 17, after the air conditioner enters the low-humidity refrigeration mode, if any one of the following fourth to sixth conditions is met, the refrigeration low-humidity mode is exited, the air conditioner operates in the normal refrigeration mode, and otherwise, the air conditioner returns to the step 13.
The fourth condition that the indoor temperature T is more than or equal to the sixth set temperature T 6 . Wherein the sixth set temperature T 6 It is possible to choose from 29 ℃ to 39 ℃ and preferably 34 ℃.
Fifth Condition, indoor relative humidity RH > second set humidity RH 2 . Wherein the second set humidity RH 2 85% to 95%, preferably 90%, can be selected.
Sixth Condition, indoor temperature T-set temperature T Is provided with Greater than seventh set temperature T 7 . A seventh set temperature T 7 It can be chosen from 3 ℃ to 7 ℃ and preferably from 5 ℃.
Here, the exiting of the low dehumidification mode (i.e., the low humidity cooling mode) mainly considers that there is a high demand for fast cooling capacity, and entering the low humidity cooling mode has a certain influence on the cooling capacity output.
For the first condition and the fourth condition, when the indoor temperature T is high, the refrigeration requirement is high, and the operation efficiency of the equipment in the machine room may be affected by the excessively high indoor temperature T, so that the low-humidity refrigeration mode is not entered when the indoor temperature T is excessively high.
For the second and fifth conditions, when the indoor relative humidity RH is high, the humidity is too high, which may cause a risk of short circuit of the equipment, and thus dehumidification is required.
For the third condition and the sixth condition, when the temperature difference between the indoor temperature T and the set temperature is large, it indicates that there is a large output demand for the refrigeration capacity, and at this time, the refrigeration effect is ensured first, and the low dehumidification mode is entered after the temperature difference is reduced.
Of course, the exit condition of the low temperature cooling mode of step 17 corresponds to the entry condition of the low temperature cooling mode of step 10.
According to the scheme, the software control scheme is adopted, normal refrigerating capacity output can be guaranteed under the condition of reducing the refrigerating and dehumidifying capacity, and the dehumidifying capacity can be effectively reduced even the dehumidifying capacity is not increased under the condition of not increasing the cost, so that the problem of over-drying of air caused by refrigerating and dehumidifying is solved in a low-cost mode, and the software control scheme has practical and economic advantages.
By adopting the technical scheme of the embodiment, the dry bulb temperature and the relative humidity at the air inlet of the air conditioner are collected, and the corresponding dew point temperature is calculated, so that the indoor environment temperature and the relative humidity are determined, the dehumidification capacity is reduced under the conditions that the indoor environment temperature is higher and the relative humidity is higher, and the refrigeration capacity is improved for refrigeration. Under the condition that the indoor temperature is lower or the relative humidity is lower, the evaporation temperature is controlled to be higher than the dew point temperature so as to carry out refrigeration but not dehumidification, and therefore, the running state of the air conditioner is adjusted according to the air humidity state, so that the humidity of a room is reasonably controlled, and the safety is improved.
According to an embodiment of the present invention, there is also provided a control apparatus of an air conditioner corresponding to the control method of the air conditioner. Referring to fig. 8, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The control device of the air conditioner may include: an acquisition unit 102 and a control unit 104.
The obtaining unit 102 is configured to obtain an indoor environment temperature of the air conditioner, obtain an indoor environment humidity of the air conditioner, and obtain an indoor heat exchanger tube temperature of the air conditioner when the air conditioner operates in the first cooling mode. Wherein the indoor environment temperature is such as indoor temperature T, the indoor environment humidity is such as indoor relative humidity RH, and the indoor heat exchanger tube Wen Ru intermediate temperature T of the indoor evaporator Inner pipe . The air conditioner operates in a first cooling mode, specificallyAnd (4) normally refrigerating according to the set dehumidification amount, namely, operating in a normal refrigeration mode. The set dehumidification amount is the dehumidification amount in the case of normal refrigeration in the normal refrigeration mode. The specific functions and processes of the acquiring unit 102 are referred to in step S110.
A control unit 104 configured to determine whether an indoor ambient temperature of the air conditioner is less than or equal to a first set temperature, determine whether an indoor ambient humidity of the air conditioner is less than or equal to a first set humidity, and determine whether a temperature difference between the indoor ambient temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is less than or equal to a second set temperature. The first set temperature is greater than the second set temperature. The specific function and processing of the control unit 104 are referred to in step S120.
The control unit 104 is further configured to control the air conditioner to continue to operate in the first cooling mode if it is determined that the indoor ambient temperature of the air conditioner is greater than the first set temperature, and/or it is determined that the indoor ambient humidity of the air conditioner is greater than the first set humidity, and/or it is determined that a temperature difference between the indoor ambient temperature of the air conditioner and the temperature of the pipe of the indoor heat exchanger of the air conditioner is greater than the second set temperature. The specific function and processing of the control unit 104 are also referred to as step S130.
The control unit 104 is further configured to, if it is determined that the indoor environment temperature of the air conditioner is less than or equal to a first set temperature, the indoor environment humidity of the air conditioner is less than or equal to a first set humidity, and the temperature difference between the indoor environment temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is less than or equal to a second set temperature, control the air conditioner to enter a second cooling mode, specifically, control the air conditioner to enter a preset low humidity cooling mode, according to the indoor environment temperature of the air conditioner, the indoor environment humidity of the air conditioner, and the dew point temperature of the air conditioner. And the dehumidification capacity of the air conditioner in the second refrigeration mode is smaller than that of the air conditioner in the first refrigeration mode. That is, the low-humidity cooling mode is a cooling mode in which the dehumidification amount is lower than the set dehumidification amount. Or the dehumidification capacity of the air conditioner in the low-humidity refrigeration mode is smaller than that of the air conditioner in the normal refrigeration mode. The specific function and processing of the control unit 104 are also referred to in step S140.
Specifically, fig. 9 is a schematic flowchart of an embodiment of a control device for cooling and dehumidifying of an air conditioner used in a machine room, an equipment room, or the like. As shown in fig. 9, the present invention provides a control device for cooling and dehumidifying an air conditioner used in a room, an equipment room, or the like, including:
and step 11, acquiring the dry bulb temperature of the air inlet of the air conditioner (such as the air inlet of the air conditioner) as the indoor temperature T under the condition that the air conditioner operates in a normal refrigeration mode. And acquiring the relative humidity of the air inlet of the air conditioner (such as the air inlet of the air conditioner) as the indoor relative humidity RH. And acquiring the tube temperature of an indoor heat exchanger of the air conditioner, such as the tube temperature of an indoor evaporator of the air conditioner, and recording as the intermediate temperature T of the indoor evaporator Inner pipe 。
Step 12, judging whether the indoor temperature T and the indoor relative humidity RH simultaneously satisfy the following first to third conditions: if so, entering a low-humidity refrigeration mode, executing the step 13 to the step 16 after entering the low-humidity refrigeration mode, otherwise, not entering the low-humidity refrigeration mode but continuing to operate according to a normal refrigeration mode.
The first condition is that: the indoor temperature T is less than or equal to a first set temperature T 1 . Wherein the first set temperature T 1 It can be chosen between 25 ℃ and 35 ℃ and preferably between 30 ℃.
The second condition is that: indoor relative humidity RH is less than or equal to first set humidity RH 1 . Wherein the first set humidity RH 1 It may be chosen from 70% to 90%, preferably 80%.
A third condition: indoor temperature T-set temperature T Is provided with Not less than the second set temperature T 2 . Wherein the second set temperature T 2 It can be chosen between 2 ℃ and 4 ℃ and preferably between 3 ℃.
Here, the current indoor temperature T, the indoor relative humidity RH and the set temperature T are determined Is provided with And the difference value of the indoor temperature T is used for judging whether to enter a low-temperature refrigeration mode or not so as to carry out low-humidity operation under the condition of ensuring normal indoor refrigeration requirement and avoid sacrificing normal dehumidification effectCapacity demand (i.e., normal indoor cooling demand).
The control device for the refrigeration and dehumidification capacity of the air conditioner used in places such as a machine room, an equipment room and the like can calculate the dew point temperature in the state by collecting the dry bulb temperature and the relative humidity of the air inlet part of the air conditioner, can properly dehumidify to reduce the humidity under the conditions of high indoor environment temperature and high relative humidity, and improves the refrigeration capacity to achieve the effect of rapid cooling. Under the condition of low temperature or low relative humidity, the evaporation temperature is controlled to be higher than the dew point temperature so as to achieve the effect of refrigeration without dehumidification. The temperature of the machine room air conditioner is controlled between 25 ℃ and 35 ℃ under the common refrigeration condition according to the use environment, so that the requirements of the machine room are met. Like this, through based on multi-parameter coupling control technique, according to air humidity state adjustment air conditioner running state, reduce the refrigeration dehumidification, avoid excessive dehumidification, effectively reduced dehumidification under the refrigeration condition, solved because of the refrigeration dehumidification leads to the too dry technical problem of air to adopt low-cost mode to solve the refrigeration dehumidification and lead to the too dry problem of air.
In some embodiments, the controlling unit 104, controlling the air conditioner to enter the second cooling mode according to the indoor ambient temperature of the air conditioner, the indoor ambient humidity of the air conditioner, and the dew point temperature of the air conditioner, includes:
the control unit 104 is specifically further configured to determine the dew point temperature of the air conditioner according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner. Wherein, according to the corresponding relationship among the set dry bulb temperature, the set relative humidity and the set dew point temperature, the set dry bulb temperature which is the same as the dry bulb temperature of the air-conditioning air inlet (such as the air-conditioning air inlet) and the set dew point temperature which is corresponding to the set relative humidity which is the same as the relative humidity of the air-conditioning air inlet (such as the air-conditioning air inlet) in the corresponding relationship are determined as the dew point temperature which is corresponding to the dry bulb temperature and the relative humidity of the air-conditioning air inlet (such as the air-conditioning air inlet) and is recorded as the dew point temperature T Dew . The specific functions and processes of the control unit 104 are also referred to in step S210.
The control unit 104 is further configured to control the air conditioner to enter a second cooling mode according to a temperature of an indoor heat exchanger tube of the air conditioner and a dew point temperature of the air conditioner, and specifically, control the air conditioner to operate in at least one of a first control manner, a second control manner, a third control manner, a fourth control manner, and a fifth control manner, which are preset, so that the air conditioner operates in the second cooling mode, and the dehumidification amount of the air conditioner is reduced and controlled under the condition that a cooling demand of an environment where the air conditioner is located is met. The specific functions and processes of the control unit 104 are also referred to in step S220.
In the second cooling mode of the air conditioner, a first control manner, such as control manner a, a second control manner, such as control manner B, a third control manner, such as control manner C, a fourth control manner, such as control manner D, and a fifth control manner, such as control manner E, are provided, and the following exemplary description may be specifically referred to.
The first control mode is a control mode for controlling the air conditioner to maintain the current operation state. Specifically, the control mode a is to control the air conditioner to maintain the current operation state. By executing the control mode A, the adjustment of the air conditioner control system is reduced, and the stability of the air conditioner control system can be maintained.
The second control mode is a control mode for controlling the rotation speed of the internal fan of the air conditioner to be increased by increasing the first set rotation speed for a set time and to be increased to the set maximum rotation speed when the rotation speed of the internal fan of the air conditioner does not reach the set maximum rotation speed. Specifically, the control mode B is to increase the first set rotating speed R per minute if the current rotating speed of the inner fan of the air conditioner is not the set maximum rotating speed a (preferably 30 rpm) is set to the maximum set upper limit of the rotation speed, and the rotation speed of the internal fan is increased. Wherein the first set rotation speed R a 20 to 40rpm, preferably 30rpm, may be selected. Here, control mode B is executed in which the upper limit of the fan rotational speed that can be reached is fixed for a certain air conditioning control systemTherefore, under the condition that the current rotating speed does not reach the upper limit, the rotating speed of the inner fan can be increased, so that the evaporation temperature is increased, and after the evaporation temperature is increased, condensation of air on the evaporator can be reduced.
The third control mode is a control mode for controlling the rotation speed of the external fan of the air conditioner to be reduced by a second set rotation speed for a set time and to be reduced to the set minimum rotation speed, when the rotation speed of the external fan of the air conditioner does not reach the set minimum rotation speed. Specifically, the control mode C is that if the current rotating speed of the outer fan is not the lowest rotating speed, the second set rotating speed R is reduced by every minute b The speed (preferably 30 rpm) is reduced to the set lower limit of the rotation speed, of course. Wherein the second set rotation speed R b 20 to 40rpm, preferably 30rpm, may be selected. Here, the control mode C is executed, similarly, the lower limit rotation speed that the motor can reach is also determined, stall is easily caused by too low rotation speed, and if the current rotation speed does not reach the lower limit, the rotation speed of the outer fan can be reduced, so that the outlet temperature of the condenser is increased, after the outlet temperature of the condenser is increased, the temperature is increased after throttling under the same throttling condition, the evaporation temperature is increased, and condensation of air on the evaporator can be reduced.
And the fourth control mode is a control mode of controlling the target exhaust temperature of the compressor of the air conditioner to be reduced according to a mode of reducing the first temperature threshold value for a set time under the condition that the target exhaust temperature of the compressor of the air conditioner does not reach the temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value, and the target exhaust temperature of the compressor of the air conditioner is reduced to the temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value at the lowest. Specifically, the control mode D is to lower the first temperature threshold T per minute a Is reduced to at most the initial target discharge temperature of the compressor-the second temperature threshold T b . Wherein the first temperature threshold T a It may be selected from 0.1 ℃ to 0.3 ℃ and preferably from 0.2 ℃. Second temperature threshold T b It can be chosen between 4 ℃ and 6 ℃ and preferably between 5 ℃. Here, the control side is executedThe formula D reduces the target discharge temperature of the compressor, i.e., reduces the throttle amount of the throttle device in the air conditioner, increases the temperature of the throttled refrigerant, and also increases the evaporation temperature, thereby reducing condensation of air on the evaporator. Of course, the target discharge temperature of the compressor cannot be lowered down without limit, and the transient lowering easily causes liquid slugging, so that the minimum value of the target discharge temperature lowering of the compressor is limited.
And the fifth control mode is a control mode which controls the frequency of the compressor of the air conditioner to be reduced according to the set time by reducing the first set frequency and to be reduced to the lowest frequency difference value between the initial target frequency and the second set frequency of the compressor of the air conditioner under the condition that the frequency of the compressor of the air conditioner does not reach the frequency difference value between the initial target frequency and the second set frequency of the compressor of the air conditioner. Specifically, the control mode E is to decrease the first setting frequency F every setting period, such as 10min a (preferably 2 Hz) speed reduces the operating frequency, up to the initial target frequency-the second set frequency F b (preferably 10 Hz). Here, the control mode E is executed to reduce the operation frequency, reduce the work output of the compressor, reduce the circulation flow, reduce the cooling capacity of the air conditioner, increase the evaporation temperature, and reduce the condensation of the air on the evaporator. The reduction in the frequency of the compressor reduces the cooling capacity.
In some embodiments, the controlling unit 104, controlling the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode, which are preset, according to the temperature of the indoor heat exchanger pipe of the air conditioner and the dew point temperature of the air conditioner, includes:
the control unit 104 is specifically further configured to determine whether a temperature difference between a dew point temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a third set temperature. The specific functions and processes of the control unit 104 are also referred to in step S310.
The control unit 104 is specifically further configured to, if it is determined that a temperature difference between a dew point temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a third set temperature, control the air conditioner to operate in at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner to increase an evaporation temperature of the indoor heat exchanger of the air conditioner, and then control the air conditioner to exit the second cooling mode and return to the first cooling mode according to an indoor ambient temperature of the air conditioner and an indoor ambient humidity of the air conditioner. The detailed function and processing of the control unit 104 are also referred to in step S320.
The control unit 104 is specifically further configured to, if it is determined that the temperature difference between the dew point temperature of the air conditioner and the temperature of the indoor heat exchanger tube of the air conditioner is less than a third set temperature, continue to control the air conditioner to operate in at least one of the first control manner, the second control manner, the third control manner, the fourth control manner, and the fifth control manner according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner. The specific functions and processes of the control unit 104 are also referred to in step S330.
As shown in fig. 9, the apparatus for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 13, judging whether the dew point temperature T is met Dew -a third set temperature T 3 Not less than intermediate temperature T of indoor evaporator Inner pipe : if yes, executing at least one of control modes B, C, D, E to realize the increase of the evaporation temperature by one or more modes of increasing the rotation speed of the inner fan, reducing the rotation speed of the outer fan, reducing the exhaust temperature and reducing the frequency, then executing step 17, otherwise executing step 14. Intermediate temperature T of indoor evaporator Inner pipe Is the coil temperature of the indoor heat exchanger of the air conditioner. Wherein the third set temperature T 3 It can be chosen between 2 ℃ and 4 ℃ and preferably between 3 ℃.
In some embodiments, the controlling unit 104 controls the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner, that is, continuously controls the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner, and further includes:
the control unit 104 is specifically further configured to determine whether an indoor heat exchanger tube temperature of the air conditioner is greater than a temperature difference between the dew point temperature of the air conditioner and a third set temperature, and is less than a temperature sum between the dew point temperature of the air conditioner and a fourth set temperature. The specific functions and processes of the control unit 104 are also referred to in step S430.
The control unit 104 is specifically configured to, if it is determined that the temperature of the tube of the indoor heat exchanger of the air conditioner is greater than the temperature difference between the dew point temperature of the air conditioner and a third set temperature and is less than the temperature sum between the dew point temperature of the air conditioner and a fourth set temperature, control the air conditioner to operate in at least one of the second control mode and the fourth control mode to increase the evaporation temperature of the indoor heat exchanger of the air conditioner, and then control the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner. The specific functions and processes of the control unit 104 are also referred to in step S440.
The control unit 104 is specifically further configured to, if it is determined that the temperature difference between the dew point temperature of the air conditioner and the third set temperature of the indoor heat exchanger tube Wen Xiaoyu of the air conditioner is greater than or equal to the temperature sum between the dew point temperature of the air conditioner and the fourth set temperature of the air conditioner, continue to control the air conditioner to operate in at least one of the first control manner, the second control manner, the third control manner, the fourth control manner, and the fifth control manner according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner again. The detailed function and processing of the control unit 104 are also referred to in step S450.
As shown in fig. 9, the apparatus for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 14, judging whether the dew point temperature T is met Dew + fourth set temperature T 4 Intermediate temperature T of indoor evaporator Inner pipe Dew point temperature T Dew -a third set temperature T 3 : if yes, at least one of the control modes B, D is executed, and then step 17 is executed, otherwise step 15 is executed. Wherein the fourth set temperature T 4 It can be selected from 0.5 ℃ to 1.5 ℃ and preferably 1 ℃.
In some embodiments, the controlling unit 104 controls the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner, that is, continues to control the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner again, and further includes:
the control unit 104 is specifically further configured to determine whether an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a temperature sum between a dew point temperature of the air conditioner and a fourth set temperature, and is less than the temperature sum between the dew point temperature of the air conditioner and a fifth set temperature. The specific function and processing of the control unit 104 are also referred to as step S510.
The control unit 104 is specifically configured to control the air conditioner to operate in the first control mode if it is determined that the temperature of the indoor heat exchanger tube of the air conditioner is greater than or equal to the temperature sum between the dew point temperature of the air conditioner and the fourth set temperature and is less than the temperature sum between the dew point temperature of the air conditioner and the fifth set temperature, and then control the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner. The specific functions and processes of the control unit 104 are also referred to in step S520.
The control unit 104 is specifically configured to, if it is determined that the temperature sum of the dew point temperature of the air conditioner and the fourth set temperature of the indoor heat exchanger tube Wen Xiaoyu of the air conditioner is greater than or equal to the temperature sum of the dew point temperature of the air conditioner and the fifth set temperature of the air conditioner, control the operation of the air conditioner in the second cooling mode according to the operation condition of the air conditioner on at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner. The specific functions and processes of the control unit 104 are also referred to in step S530.
As shown in fig. 9, the apparatus for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 15, judging whether the dew point temperature T is met Dew + fifth set temperature T 5 Intermediate temperature T of indoor evaporator Inner pipe Not less than dew point temperature T Dew + fourth set temperature T 4 : if yes, the control mode a is executed, and then the step 17 is executed, otherwise the step 16 is executed. Wherein the fifth set temperature T 5 It can be chosen between 2 ℃ and 4 ℃ and preferably between 3 ℃.
In some embodiments, the controlling unit 104, controlling the air conditioner to operate in the second cooling mode according to the operation condition of the air conditioner on at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode, includes:
the control unit 104 is specifically further configured to determine whether the air conditioner has executed at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner. The specific functions and processes of the control unit 104 are also referred to in step S610.
The control unit 104 is specifically configured to, if it is determined that at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner has been executed by the air conditioner, control the air conditioner to execute the corresponding control manner in reverse for the corresponding control manner of the second control manner, the third control manner, the fourth control manner, and the fifth control manner that has been executed by the air conditioner, and then control the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner. The specific function and processing of the control unit 104 are also referred to in step S620.
The control unit 104 is specifically configured to, if it is determined that the air conditioner does not execute any one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner, control the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner. The specific function and processing of the control unit 104 are also referred to as step S630.
As shown in fig. 9, the apparatus for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the present invention further includes: step 16, intermediate temperature T of indoor evaporator Inner pipe Not less than dew point temperature T Dew + fifth set temperature T 5 In the case of (3), it is determined whether any of the control methods B, C, D, E has been executed: if any of the operations B, C, D, E have been performed, then the gradual recovery is performed in the reverse logical direction until the initial state is restored, otherwise step 17 is performed.
From step 13 to step 16, the solution of the present invention passes the dew point temperature T Dew With evaporator temperature (e.g. indoor evaporator intermediate temperature T) Inner pipe ) When the difference value is large, a plurality of schemes (such as a control mode B, C, D, E) are required to be synchronously performed so as to accelerate the increase of the evaporation temperature and reduce condensation and dehumidification. When the difference is smaller, the scheme B, D is preferentially adopted, so that the effect of reducing dehumidification can be achieved under the condition of reducing the influence on the refrigeration capacity. When the evaporator temperature (e.g. the indoor evaporator intermediate temperature T) Inner pipe ) Specific dew point temperature T Dew And under high and high conditions, gradually recovering the previous operation to a normal operation state of the prototype or a state without condensation risk, and maintaining the operation state. Therefore, under the condition of meeting the refrigeration requirement of the environment where the air conditioner is located, the dehumidification amount of the air conditioner is reduced and controlled.
In some embodiments, the controlling unit 104, controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner, includes:
the control unit 104 is specifically further configured to determine whether the indoor ambient temperature of the air conditioner is greater than or equal to a sixth set temperature, determine whether the indoor ambient humidity of the air conditioner is greater than a second set humidity, and determine whether a temperature difference between the indoor ambient temperature of the air conditioner and the set temperature is greater than a seventh set temperature. The sixth set temperature is greater than the seventh set temperature. The specific functions and processes of the control unit 104 are also referred to in step S710.
The control unit 104 is specifically further configured to, if it is determined that the indoor ambient temperature of the air conditioner is greater than or equal to a sixth set temperature, the indoor ambient humidity of the air conditioner is greater than a second set humidity, and a temperature difference between the indoor ambient temperature of the air conditioner and the set temperature is greater than a seventh set temperature, control the air conditioner to exit the second cooling mode and return to the first cooling mode. The specific functions and processes of the control unit 104 are also referred to in step S720.
The control unit 104 is specifically further configured to, if it is determined that the indoor environment temperature of the air conditioner is less than a sixth set temperature, and/or it is determined that the indoor environment humidity of the air conditioner is less than or equal to a second set humidity, and/or it is determined that a temperature difference between the indoor environment temperature of the air conditioner and the set temperature is less than or equal to a seventh set temperature, return to control the air conditioner to continue to enter the second cooling mode according to the pipe temperature of the indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner again, specifically, control the air conditioner to operate in at least one of a first control manner, a second control manner, a third control manner, a fourth control manner, and a fifth control manner that are preset, so that the air conditioner continues to operate in the second cooling mode, and realize that the dehumidification amount of the air conditioner is controlled to be reduced under the condition that the refrigeration requirement of the environment where the air conditioner is located is met. The detailed function and processing of the control unit 104 are also referred to in step S730.
Specifically, as shown in fig. 9, the apparatus for controlling cooling and dehumidifying capacity of an air conditioner used in a room, an equipment room, or the like according to the aspect of the present invention further includes: and step 17, after the air conditioner enters the low-humidity refrigeration mode, if any one of the following fourth to sixth conditions is met, the refrigeration low-humidity mode is exited, the air conditioner operates in the normal refrigeration mode, and otherwise, the air conditioner returns to the step 13.
The fourth condition that the indoor temperature T is more than or equal to the sixth set temperature T 6 . Wherein the sixth set temperature T 6 It is possible to choose from 29 ℃ to 39 ℃ and preferably 34 ℃.
Fifth Condition, indoor relative humidity RH > second set humidity RH 2 . Wherein the second set humidity RH 2 85% to 95%, preferably 90%, can be selected.
Sixth Condition, indoor temperature T-set temperature T Is provided with Seventh set temperature T 7 . A seventh set temperature T 7 It can be chosen from 3 ℃ to 7 ℃ and preferably from 5 ℃.
Here, the exiting of the low dehumidification mode (i.e., the low humidity cooling mode) mainly considers that there is a high demand for fast cooling capacity, and entering the low humidity cooling mode has a certain influence on the cooling capacity output.
For the first condition and the fourth condition, when the indoor temperature T is high, the refrigeration requirement is high, and the operation efficiency of the equipment in the machine room may be affected by the excessively high indoor temperature T, so that the low-humidity refrigeration mode is not entered when the indoor temperature T is excessively high.
For the second and fifth conditions, when the indoor relative humidity RH is high, the humidity is too high, which may cause a risk of short circuit of the equipment, and thus dehumidification is required.
For the third condition and the sixth condition, when the temperature difference between the indoor temperature T and the set temperature is large, it indicates that there is a large output demand for the refrigeration capacity, and at this time, the refrigeration effect is ensured first, and the low dehumidification mode is entered after the temperature difference is reduced.
Of course, the exit condition of the low temperature cooling mode of step 17 corresponds to the entry condition of the low temperature cooling mode of step 10.
The scheme of the invention can ensure normal refrigerating capacity output under the condition of reducing the refrigerating and dehumidifying capacity by adopting a software control scheme, and can effectively reduce the dehumidifying capacity even without dehumidifying under the condition of not increasing the cost, thereby solving the problem of over-dry air caused by refrigerating and dehumidifying by adopting a low-cost mode and having more practical and economic advantages.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method, reference may be made to the related descriptions in the embodiments without being detailed in the description of this embodiment, which is not described herein again.
By adopting the technical scheme of the invention, the indoor environment temperature and the relative humidity are determined by acquiring the dry bulb temperature and the relative humidity at the air inlet of the air conditioner and calculating the corresponding dew point temperature, so that the dehumidification capacity is reduced under the condition of higher indoor environment temperature and higher relative humidity, and the refrigeration capacity is improved for refrigeration; under the lower or lower circumstances of relative humidity of indoor temperature, control evaporating temperature is higher than dew point temperature and in order to refrigerate but not dehumidify, has effectively reduced dehumidification under the refrigeration circumstances, realizes adopting low-cost mode to solve refrigeration dehumidification and leads to the problem that the air is too dry.
According to an embodiment of the present invention, there is also provided an air conditioner corresponding to a control device of the air conditioner. The air conditioner may include: the control device of the air conditioner described above.
Since the processing and functions of the air conditioner of this embodiment are basically corresponding to the embodiments, principles and examples of the foregoing devices, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
By adopting the technical scheme of the invention, the indoor environment temperature and the relative humidity are determined by acquiring the dry bulb temperature and the relative humidity at the air inlet of the air conditioner and calculating the corresponding dew point temperature, so that the dehumidification capacity is reduced under the condition of higher indoor environment temperature and higher relative humidity, and the refrigeration capacity is improved for refrigeration; under the condition that the indoor temperature is lower or the relative humidity is lower, the evaporation temperature is controlled to be higher than the dew point temperature so as to carry out refrigeration but not to dehumidify, the dehumidification capacity under the refrigeration condition is effectively reduced, and the technical problem that the air is too dry due to refrigeration and dehumidification is solved.
According to an embodiment of the present invention, there is also provided a storage medium corresponding to a control method of an air conditioner, the storage medium including a stored program, wherein an apparatus where the storage medium is located is controlled to execute the control method of the air conditioner described above when the program is run.
Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles and examples of the foregoing method, reference may be made to relevant descriptions in the foregoing embodiments for details that are not described in detail in the description of this embodiment, and further description is not repeated here.
By adopting the technical scheme of the invention, the dry bulb temperature and the relative humidity of the air inlet position of the air conditioner are collected, and the corresponding dew point temperature is calculated, so that the indoor environment temperature and the relative humidity are determined, the dehumidification capacity is reduced under the condition of higher indoor environment temperature and higher relative humidity, and the refrigeration capacity is improved for refrigeration; under the condition that the indoor temperature is lower or the relative humidity is lower, the evaporation temperature is controlled to be higher than the dew point temperature so as to carry out refrigeration without dehumidification, the refrigeration dehumidification amount can be reduced, and excessive dehumidification is avoided.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (16)

1. A control method of an air conditioner, comprising:
under the condition that the air conditioner operates in a first refrigeration mode, acquiring the indoor environment temperature of the air conditioner, acquiring the indoor environment humidity of the air conditioner, and acquiring the pipe temperature of an indoor heat exchanger of the air conditioner;
determining whether an indoor ambient temperature of the air conditioner is less than or equal to a first set temperature, determining whether an indoor ambient humidity of the air conditioner is less than or equal to a first set humidity, and determining whether a temperature difference between the indoor ambient temperature of the air conditioner and a tube temperature of an indoor heat exchanger of the air conditioner is less than or equal to a second set temperature; the first set temperature is greater than the second set temperature;
if the indoor environment temperature of the air conditioner is determined to be higher than a first set temperature, and/or the indoor environment humidity of the air conditioner is determined to be higher than the first set humidity, and/or the temperature difference value between the indoor environment temperature of the air conditioner and the temperature of an indoor heat exchanger pipe of the air conditioner is determined to be higher than a second set temperature, controlling the air conditioner to continuously operate in a first refrigeration mode;
if the indoor environment temperature of the air conditioner is determined to be less than or equal to a first set temperature, the indoor environment humidity of the air conditioner is determined to be less than or equal to a first set humidity, and the temperature difference between the indoor environment temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is determined to be less than or equal to a second set temperature, controlling the air conditioner to enter a second refrigeration mode according to the indoor environment temperature of the air conditioner, the indoor environment humidity of the air conditioner and the dew point temperature of the air conditioner; and the dehumidification capacity of the air conditioner in the second refrigeration mode is smaller than that of the air conditioner in the first refrigeration mode.
2. The method for controlling the air conditioner according to claim 1, wherein controlling the air conditioner to enter the second cooling mode according to the indoor ambient temperature of the air conditioner, the indoor ambient humidity of the air conditioner, and the dew point temperature of the air conditioner comprises:
determining the dew point temperature of the air conditioner according to the indoor environment temperature and the indoor environment humidity of the air conditioner;
controlling the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner, so that the air conditioner operates in a second refrigeration mode, and realizing the reduction control of the dehumidification amount of the air conditioner under the condition of meeting the refrigeration requirement of the environment where the air conditioner is located;
wherein,
the first control mode is a control mode for controlling the air conditioner to maintain the current operation state;
the second control mode is a control mode for controlling the rotating speed of the inner fan of the air conditioner to be increased in a mode of increasing the first set rotating speed for a set time under the condition that the rotating speed of the inner fan of the air conditioner does not reach the set maximum rotating speed, and the rotating speed of the inner fan of the air conditioner is increased to the set maximum rotating speed;
the third control mode is a control mode for controlling the rotation speed of the external fan of the air conditioner to be reduced by a second set rotation speed for a set time and to be reduced to the set minimum rotation speed at the minimum when the rotation speed of the external fan of the air conditioner does not reach the set minimum rotation speed;
the fourth control mode is a control mode for controlling the target exhaust temperature of the compressor of the air conditioner to be reduced according to a mode of reducing the first temperature threshold value in a set time, and the target exhaust temperature is reduced to the lowest temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value;
the fifth control mode is a control mode for controlling the frequency of the compressor of the air conditioner to be reduced by a first set frequency according to a set time, and to be reduced to a frequency difference between an initial target frequency of the compressor of the air conditioner and a second set frequency at the lowest.
3. The method of claim 2, wherein controlling the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode, which are preset, according to the temperature of the indoor heat exchanger tube of the air conditioner and the dew point temperature of the air conditioner comprises:
determining whether a temperature difference between a dew point temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a third set temperature;
if the temperature difference between the dew point temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is determined to be greater than or equal to a third set temperature, controlling the air conditioner to operate in at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner;
if the temperature difference between the dew point temperature of the air conditioner and the temperature of the pipe of the indoor heat exchanger of the air conditioner is determined to be smaller than a third set temperature, the air conditioner is continuously controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the pipe of the indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner.
4. The method of controlling an air conditioner according to claim 2 or 3, wherein controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode, and the fifth control mode according to a temperature of an indoor heat exchanger tube of the air conditioner and a dew point temperature of the air conditioner further includes:
determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than a temperature difference between a dew point temperature of the air conditioner and a third set temperature and is less than a temperature sum between the dew point temperature of the air conditioner and a fourth set temperature;
if the temperature of an indoor heat exchanger pipe of the air conditioner is determined to be greater than the temperature difference between the dew point temperature of the air conditioner and a third set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature, controlling the air conditioner to operate in at least one of the second control mode and the fourth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner;
if the temperature difference between the dew point temperature of the air conditioner and a third set temperature of the indoor heat exchanger pipe Wen Xiaoyu of the air conditioner is determined, or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum between the dew point temperature of the air conditioner and a fourth set temperature, the air conditioner is controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode again according to the temperature of the indoor heat exchanger pipe of the air conditioner and the dew point temperature of the air conditioner.
5. The method of controlling an air conditioner according to any one of claims 2 to 4, wherein controlling the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode, and the fifth control mode according to an indoor heat exchanger temperature of the air conditioner and a dew point temperature of the air conditioner further includes:
determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a temperature sum between a dew point temperature of the air conditioner and a fourth set temperature and is less than a temperature sum between the dew point temperature of the air conditioner and a fifth set temperature;
if the temperature of an indoor heat exchanger tube of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and the fourth set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and the fifth set temperature, controlling the air conditioner to operate in the first control mode, and then controlling the air conditioner to exit the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner;
and if the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature is determined or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and a fifth set temperature, controlling the air conditioner to operate in a second refrigeration mode according to the operating condition of the air conditioner on at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode.
6. The method for controlling the air conditioner according to claim 5, wherein controlling the air conditioner to operate in a second cooling mode according to an operation of the air conditioner in at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner includes:
determining whether the air conditioner has performed at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner;
if it is determined that at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode has been executed by the air conditioner, controlling the air conditioner to execute the corresponding control mode in reverse for the corresponding control mode of the second control mode, the third control mode, the fourth control mode and the fifth control mode that has been executed by the air conditioner, and then controlling the air conditioner to exit from the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner;
and if the air conditioner is determined not to execute any control mode of the second control mode, the third control mode, the fourth control mode and the fifth control mode, controlling the air conditioner to exit the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor ambient temperature and the indoor ambient humidity of the air conditioner.
7. The method for controlling the air conditioner according to any one of claims 2 to 6, wherein controlling the air conditioner to exit the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner includes:
determining whether the indoor environment temperature of the air conditioner is greater than or equal to a sixth set temperature, determining whether the indoor environment humidity of the air conditioner is greater than a second set humidity, and determining whether a temperature difference between the indoor environment temperature of the air conditioner and the set temperature is greater than a seventh set temperature; the sixth set temperature is greater than the seventh set temperature;
if the indoor environment temperature of the air conditioner is determined to be greater than or equal to a sixth set temperature, the indoor environment humidity of the air conditioner is determined to be greater than a second set humidity, and a temperature difference value between the indoor environment temperature of the air conditioner and the set temperature is determined to be greater than a seventh set temperature, the air conditioner is controlled to exit from the second refrigeration mode and return to the first refrigeration mode;
and if the indoor environment temperature of the air conditioner is determined to be less than a sixth set temperature, and/or the indoor environment humidity of the air conditioner is determined to be less than or equal to a second set humidity, and/or the temperature difference between the indoor environment temperature of the air conditioner and the set temperature is determined to be less than or equal to a seventh set temperature, returning to control the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner again so as to enable the air conditioner to continuously operate in the second refrigeration mode, and realizing the reduction control of the dehumidification amount of the air conditioner under the condition that the refrigeration requirement of the environment where the air conditioner is located is met.
8. A control device of an air conditioner, characterized by comprising:
an acquisition unit configured to acquire an indoor ambient temperature of the air conditioner, acquire an indoor ambient humidity of the air conditioner, and acquire an indoor heat exchanger tube temperature of the air conditioner, in a case where the air conditioner operates in a first cooling mode;
a control unit configured to determine whether an indoor ambient temperature of the air conditioner is less than or equal to a first set temperature, determine whether an indoor ambient humidity of the air conditioner is less than or equal to a first set humidity, and determine whether a temperature difference between the indoor ambient temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is less than or equal to a second set temperature; the first set temperature is greater than the second set temperature;
the control unit is further configured to control the air conditioner to continue to operate in the first cooling mode if the indoor environment temperature of the air conditioner is determined to be greater than the first set temperature, and/or the indoor environment humidity of the air conditioner is determined to be greater than the first set humidity, and/or the temperature difference between the indoor environment temperature of the air conditioner and the temperature of the pipe of the indoor heat exchanger of the air conditioner is determined to be greater than the second set temperature;
the control unit is further configured to control the air conditioner to enter a second cooling mode according to the indoor environment temperature of the air conditioner, the indoor environment humidity of the air conditioner and the dew point temperature of the air conditioner if it is determined that the indoor environment temperature of the air conditioner is less than or equal to a first set temperature, the indoor environment humidity of the air conditioner is less than or equal to a first set humidity, and the temperature difference between the indoor environment temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is less than or equal to a second set temperature; and the dehumidification capacity of the air conditioner in the second refrigeration mode is smaller than that of the air conditioner in the first refrigeration mode.
9. The control device of claim 8, wherein the control unit controls the air conditioner to enter the second cooling mode according to the indoor ambient temperature of the air conditioner, the indoor ambient humidity of the air conditioner, and the dew point temperature of the air conditioner, and comprises:
determining the dew point temperature of the air conditioner according to the indoor environment temperature and the indoor environment humidity of the air conditioner;
controlling the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner, so that the air conditioner operates in a second refrigeration mode, and the dehumidification amount of the air conditioner is reduced and controlled under the condition that the refrigeration requirement of the environment where the air conditioner is located is met;
wherein,
the first control mode is a control mode for controlling the air conditioner to maintain the current operation state;
the second control mode is a control mode which controls the rotating speed of the inner fan of the air conditioner to be increased in a mode of increasing the first set rotating speed for a set time under the condition that the rotating speed of the inner fan of the air conditioner does not reach the set maximum rotating speed, and the rotating speed of the inner fan of the air conditioner is increased to the set maximum rotating speed at the maximum;
the third control mode is a control mode for controlling the rotation speed of the external fan of the air conditioner to be reduced by a second set rotation speed for a set time and to be reduced to the set minimum rotation speed at the minimum when the rotation speed of the external fan of the air conditioner does not reach the set minimum rotation speed;
the fourth control mode is a control mode for controlling the target exhaust temperature of the compressor of the air conditioner to be reduced according to a mode of reducing the first temperature threshold value in a set time, and the target exhaust temperature is reduced to the lowest temperature difference value between the initial target exhaust temperature of the compressor of the air conditioner and the second temperature threshold value;
the fifth control mode is a control mode for controlling the frequency of the compressor of the air conditioner to be reduced by a first set frequency according to a set time, and to be reduced to a frequency difference between an initial target frequency of the compressor of the air conditioner and a second set frequency at the lowest.
10. The control device of claim 9, wherein the control unit controls the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode, which are preset, according to the temperature of the indoor heat exchanger pipe of the air conditioner and the dew point temperature of the air conditioner, and comprises:
determining whether a temperature difference between a dew point temperature of the air conditioner and an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a third set temperature;
if the temperature difference between the dew point temperature of the air conditioner and the pipe temperature of the indoor heat exchanger of the air conditioner is determined to be greater than or equal to a third set temperature, controlling the air conditioner to operate in at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner;
if the temperature difference between the dew point temperature of the air conditioner and the temperature of the pipe of the indoor heat exchanger of the air conditioner is determined to be smaller than a third set temperature, the air conditioner is continuously controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to the temperature of the pipe of the indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner.
11. The control device of an air conditioner according to claim 9 or 10, wherein the control unit controls the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode, and the fifth control mode according to an indoor heat exchanger tube temperature of the air conditioner and a dew point temperature of the air conditioner, and further includes:
determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than a temperature difference between a dew point temperature of the air conditioner and a third set temperature and is less than a temperature sum between the dew point temperature of the air conditioner and a fourth set temperature;
if the temperature of an indoor heat exchanger pipe of the air conditioner is determined to be greater than the temperature difference between the dew point temperature of the air conditioner and a third set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature, controlling the air conditioner to operate in at least one of the second control mode and the fourth control mode, and then controlling the air conditioner to exit from the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner;
if the temperature difference between the dew point temperature of the air conditioner and a third set temperature of the indoor heat exchanger pipe Wen Xiaoyu of the air conditioner is determined, or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum between the dew point temperature of the air conditioner and a fourth set temperature, the air conditioner is controlled to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode again according to the temperature of the indoor heat exchanger pipe of the air conditioner and the dew point temperature of the air conditioner.
12. The control device of an air conditioner according to any one of claims 9 to 11, wherein the control unit controls the air conditioner to operate in at least one of the first control mode, the second control mode, the third control mode, the fourth control mode and the fifth control mode according to an indoor heat exchanger tube temperature of the air conditioner and a dew point temperature of the air conditioner, and further comprises:
determining whether an indoor heat exchanger tube temperature of the air conditioner is greater than or equal to a temperature sum between a dew point temperature of the air conditioner and a fourth set temperature and is less than a temperature sum between the dew point temperature of the air conditioner and a fifth set temperature;
if the temperature of an indoor heat exchanger tube of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and the fourth set temperature and less than the temperature sum value between the dew point temperature of the air conditioner and the fifth set temperature, controlling the air conditioner to operate in the first control mode, and then controlling the air conditioner to exit the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor environment temperature of the air conditioner and the indoor environment humidity of the air conditioner;
and if the temperature sum value between the dew point temperature of the air conditioner and a fourth set temperature is determined or the temperature of the indoor heat exchanger pipe of the air conditioner is determined to be greater than or equal to the temperature sum value between the dew point temperature of the air conditioner and a fifth set temperature, controlling the air conditioner to operate in a second refrigeration mode according to the operating condition of the air conditioner on at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode.
13. The apparatus of claim 12, wherein the control unit controls the air conditioner to operate in a second cooling mode according to an operation of the air conditioner in at least one of the second control mode, the third control mode, the fourth control mode, and the fifth control mode, and includes:
determining whether the air conditioner has performed at least one of the second control manner, the third control manner, the fourth control manner, and the fifth control manner;
if it is determined that at least one of the second control mode, the third control mode, the fourth control mode and the fifth control mode has been executed by the air conditioner, controlling the air conditioner to execute the corresponding control mode in reverse for the corresponding control mode of the second control mode, the third control mode, the fourth control mode and the fifth control mode that has been executed by the air conditioner, and then controlling the air conditioner to exit from the second cooling mode and return to the first cooling mode according to the indoor ambient temperature of the air conditioner and the indoor ambient humidity of the air conditioner;
and if the air conditioner is determined not to execute any control mode of the second control mode, the third control mode, the fourth control mode and the fifth control mode, controlling the air conditioner to exit the second refrigeration mode and recover to execute the first refrigeration mode according to the indoor ambient temperature and the indoor ambient humidity of the air conditioner.
14. The control device of an air conditioner according to any one of claims 9 to 13, wherein the control unit controls the air conditioner to exit the second cooling mode and return to the first cooling mode in accordance with an indoor ambient temperature of the air conditioner and an indoor ambient humidity of the air conditioner, and includes:
determining whether the indoor environment temperature of the air conditioner is greater than or equal to a sixth set temperature, determining whether the indoor environment humidity of the air conditioner is greater than a second set humidity, and determining whether a temperature difference between the indoor environment temperature of the air conditioner and the set temperature is greater than a seventh set temperature; the sixth set temperature is greater than the seventh set temperature;
if the indoor environment temperature of the air conditioner is determined to be greater than or equal to a sixth set temperature, the indoor environment humidity of the air conditioner is determined to be greater than a second set humidity, and a temperature difference value between the indoor environment temperature of the air conditioner and the set temperature is determined to be greater than a seventh set temperature, the air conditioner is controlled to exit from the second refrigeration mode and return to the first refrigeration mode;
and if the indoor environment temperature of the air conditioner is determined to be less than a sixth set temperature, and/or the indoor environment humidity of the air conditioner is determined to be less than or equal to a second set humidity, and/or the temperature difference between the indoor environment temperature of the air conditioner and the set temperature is determined to be less than or equal to a seventh set temperature, returning to control the air conditioner to operate in at least one of a first control mode, a second control mode, a third control mode, a fourth control mode and a fifth control mode which are preset according to the pipe temperature of an indoor heat exchanger of the air conditioner and the dew point temperature of the air conditioner again so as to enable the air conditioner to continue to operate in the second refrigeration mode, and achieving the effect of reducing and controlling the dehumidification amount of the air conditioner under the condition that the refrigeration requirement of the environment where the air conditioner is located is met.
15. An air conditioner, comprising: the control device of the air conditioner according to any one of claims 8 to 14.
16. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is located is controlled to execute the control method of the air conditioner according to any one of claims 1 to 7 when the program is executed.
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