CN110145843B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN110145843B CN110145843B CN201910319612.XA CN201910319612A CN110145843B CN 110145843 B CN110145843 B CN 110145843B CN 201910319612 A CN201910319612 A CN 201910319612A CN 110145843 B CN110145843 B CN 110145843B
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- 230000002596 correlated effect Effects 0.000 claims abstract description 4
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- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 description 19
- 238000005265 energy consumption Methods 0.000 description 5
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- 230000001681 protective effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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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Abstract
本发明涉及空调器及其控制方法，该控制方法包括：接收用于指示空调器的压缩机停止运行的停机指令；控制压缩机停止运行，并获取压缩机的排气温度；根据排气温度确定空调器的室外风机自压缩机停止运行后需要继续运行的第一时长，第一时长与排气温度成正相关性；以及控制室外风机运行第一时长后停止运行。当压缩机停机后，根据此时的排气温度确定室外风机的延长运行时间，可使得室外风机的延长运转时间与空调器的实际系统负荷相匹配，根据实际情况降低了空调器的系统负荷，减少了压缩机再次开启时因系统负荷过大或者温度过高导致空调器异常停机或者保护停机的现象产生，提高了用户的体验效果。
The invention relates to an air conditioner and a control method thereof. The control method includes: receiving a stop instruction for instructing a compressor of the air conditioner to stop running; controlling the compressor to stop running, and acquiring the exhaust temperature of the compressor; determining according to the exhaust temperature The first period of time that the outdoor fan of the air conditioner needs to continue to run after the compressor stops running, and the first period of time is positively correlated with the exhaust temperature; and the outdoor fan is controlled to stop running after the first period of operation. When the compressor is stopped, the extended operation time of the outdoor fan is determined according to the exhaust temperature at this time, which can make the extended operation time of the outdoor fan match the actual system load of the air conditioner, and reduce the system load of the air conditioner according to the actual situation. The phenomenon of abnormal shutdown or protection shutdown of the air conditioner due to excessive system load or high temperature when the compressor is turned on again is reduced, and the user experience effect is improved.
Description
Technical Field
The present invention relates to an air conditioner, and more particularly, to an air conditioner and a control method thereof.
Background
Under abominable operating mode, the heat transfer effect of air conditioner complete machine is relatively poor, and system load increases, thereby makes the air conditioner operation unusual easily and leads to shutting down, and the unusual shutdown repeatedly of air conditioner can lead to the air conditioner to produce the trouble and unable normal use. Therefore, after the compressor stops operating, it is generally necessary to extend the stop time of the outdoor fan to reduce the system load, thereby reducing the possibility of abnormal shutdown when the compressor is restarted. However, in the prior art, after the compressor stops operating, the operation time of the outdoor fan is set randomly or fixed, which cannot cope with the problems of different system loads at all, and the energy consumption of the air conditioner may be increased because the operation time of the outdoor fan is prolonged too long.
Disclosure of Invention
An object of the first aspect of the present invention is to overcome at least one of the drawbacks of the prior art and to provide an air conditioner control method capable of determining an extended operation time of an outdoor fan according to a discharge temperature of a compressor so that the extended operation time of the outdoor fan matches an actual system load of the air conditioner.
It is a further object of the first aspect of the present invention to ensure that the system load pressure relief of the air conditioner is adequate.
It is a further object of the first aspect of the present invention to increase the rate of pressure relief of an air conditioner to increase the rate of load reduction of the air conditioner system.
An object of a second aspect of the present invention is to provide an air conditioner capable of determining an extended operation time of an outdoor fan according to a discharge temperature of a compressor.
According to a first aspect of the present invention, there is provided a control method of an air conditioner, comprising:
receiving a stop instruction for indicating that a compressor of the air conditioner stops operating;
controlling the compressor to stop running, and acquiring the exhaust temperature of the compressor;
determining a first time length for which an outdoor fan of the air conditioner needs to continue to operate after the compressor stops operating according to the exhaust temperature, wherein the first time length is in positive correlation with the exhaust temperature; and
and controlling the outdoor fan to operate for the first time and then stop operating.
Optionally, after acquiring the discharge temperature of the compressor, the control method further includes:
determining a first operating speed of the outdoor fan within the first time period according to the exhaust temperature;
controlling the outdoor fan to operate for the first time period according to the first operating speed and then stopping operating;
the first operating speed and the exhaust temperature form positive correlation, and the first operating speed is less than or equal to the preset highest wind speed of the outdoor fan.
Optionally, when the exhaust temperature is in the interval of (T)1，T2) When the first time length is t1The first operation speed is an operation speed of the outdoor fan before the compressor stops operating;
when the exhaust temperature is in the interval of [ T2Infinity), the first time period is t2The first running speed is the preset highest wind speed of the outdoor fan; wherein
t2Greater than t1。
Optionally, the shutdown instruction includes a protection shutdown signal and a remote shutdown signal sent by a remote controller.
Optionally, when the shutdown instruction is a remote shutdown signal sent by a remote controller, the control method further includes:
when the compressor stops operating, controlling an indoor fan of the air conditioner to continue operating for a preset time, and acquiring the indoor environment temperature and the exhaust temperature of the compressor;
determining a second time length for which the indoor fan needs to continue to operate after the indoor fan operates for a preset time length according to the indoor environment temperature and the exhaust temperature; and
controlling the indoor fan to operate for the second time period and then stopping operating; wherein
The second period of time is positively correlated with the exhaust temperature at the same indoor ambient temperature.
Optionally, after acquiring the discharge temperature of the compressor, the control method further includes:
determining a second operating speed of the indoor fan within the second time period according to the exhaust temperature;
controlling the indoor fan to operate for the second time period according to the second operation speed and then stopping operating;
the second operating speed and the exhaust temperature form positive correlation, and the second operating speed is less than or equal to the preset highest wind speed of the indoor fan.
Optionally, after the compressor stops operating, the indoor fan continues to operate for the preset time according to the wind speed before the compressor stops operating;
when the exhaust temperature is in the interval of (T)1，T2) When the second running speed is the wind speed before the compressor stops running;
when the exhaust temperature is in the interval of [ T2And infinity), the second running speed is the preset highest wind speed of the indoor fan.
Optionally, when the shutdown instruction is a protection shutdown signal, the control method further includes:
when the indoor fan of the air conditioner continues to operate for a preset time after the compressor stops operating, acquiring the exhaust temperature of the compressor;
determining a third operation speed of the indoor fan after the indoor fan continues to operate for a preset time according to the exhaust temperature;
and controlling the indoor fan to continuously operate according to the third operating speed.
Optionally, after the compressor stops operating, the indoor fan continues to operate for the preset time according to the wind speed before the compressor stops operating;
when the exhaust temperature is in the interval of (T)1，T2) When the third operation speed is higher than the wind speed of the indoor fan by one level before the compressor stops operating;
when the exhaust temperature is in the interval of [ T2And infinity), the third operating speed is the preset maximum wind speed of the indoor fan.
According to a second aspect of the present invention, there is also provided an air conditioner operating according to any one of the control methods described above.
In the air conditioner control method, when the shutdown instruction is received to prompt the compressor to shut down, the outdoor fan does not stop immediately but needs to prolong the running time, so that the pressure of the air conditioner is relieved, and the system load of the air conditioner is reduced. The extended operation time (i.e. the first time duration) of the outdoor fan is determined according to the exhaust temperature after the compressor is stopped, because the exhaust temperature of the compressor can accurately reflect the actual system load of the air conditioner at the time, therefore, the extended operation time of the outdoor fan can be matched with the actual system load of the air conditioner, the system load cannot be really reduced due to the fact that the extended operation time of the outdoor fan is too short, and the energy consumption of the air conditioner cannot be increased due to the fact that the extended operation time of the outdoor fan is too long.
Further, the extended operation time (i.e., the first time period) of the outdoor fan has a positive correlation with the discharge temperature, i.e., when the discharge temperature is high, the extended operation time of the outdoor fan is also long. When the exhaust temperature is higher, the system load of the air conditioner is larger, and at the moment, the longer the prolonged operation time of the outdoor fan is, the more sufficient the pressure relief of the system load is. When the exhaust temperature is lower, the system load of the air conditioner is lower, and at the moment, the outdoor fan only needs to be operated for a short time to ensure that the system load is fully decompressed.
Further, for the model with the adjustable air speed of the outdoor fan, the operation speed of the outdoor fan in the prolonged operation time is also set to be in positive correlation with the exhaust temperature, that is, when the exhaust temperature is higher, the operation speed of the outdoor fan in the prolonged operation time is higher (but not exceeding the preset maximum air speed of the outdoor fan). When the exhaust temperature is higher, the system load of the air conditioner is larger, and at the moment, the outdoor fan runs at a higher running speed, so that the heat exchange can be increased, and the system load is fully decompressed.
Further, the pressure relief speed of the whole air conditioner can be increased by continuously supplying air by the indoor fan after the compressor is stopped, so that after the compressor stops running, the control method of the application also determines the running time and/or the running speed of the indoor fan in the running time according to the exhaust temperature and the indoor environment temperature, and the speed of reducing the system load of the air conditioner is increased.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of an air conditioner control method according to another embodiment of the present invention;
fig. 3 is a schematic control flowchart of an indoor fan according to an embodiment of the present invention.
Detailed Description
The present invention first provides a control method of an air conditioner, and fig. 1 is a schematic flowchart of the control method of the air conditioner according to an embodiment of the present invention. The control method of the invention comprises the following steps:
receiving a stop instruction for indicating the compressor of the air conditioner to stop running;
controlling the compressor to stop running, and acquiring the exhaust temperature of the compressor;
determining a first time length for an outdoor fan of the air conditioner to continue to operate after a compressor stops operating according to the exhaust temperature, wherein the first time length is in positive correlation with the exhaust temperature; and
and controlling the outdoor fan to stop running after the outdoor fan runs for the first time.
According to the air conditioner control method, after the compressor is stopped by receiving the stop instruction, the outdoor fan cannot be stopped immediately, but the running time needs to be prolonged, so that the pressure of the air conditioner is relieved, the system load of the air conditioner is reduced, the phenomenon that the air conditioner is abnormally stopped or the air conditioner is stopped in a protection mode due to overlarge system load or overhigh temperature when the compressor is started again is reduced, and the experience effect of a user is improved. The extended operation time (i.e. the first time duration) of the outdoor fan is determined according to the exhaust temperature after the compressor is stopped, because the exhaust temperature of the compressor can accurately reflect the actual system load of the air conditioner at the time, therefore, the extended operation time of the outdoor fan can be matched with the actual system load of the air conditioner, the system load cannot be really reduced due to the fact that the extended operation time of the outdoor fan is too short, and the energy consumption of the air conditioner cannot be increased due to the fact that the extended operation time of the outdoor fan is too long.
Further, the extended operation time (i.e., the first time duration) of the outdoor fan is in positive correlation with the exhaust temperature, that is, when the exhaust temperature is higher, the extended operation time of the outdoor fan is also longer; when the exhaust temperature is lower, the prolonged operation time of the outdoor fan is also shorter. When the exhaust temperature is higher, the system load of the air conditioner is larger, and at the moment, the longer the prolonged operation time of the outdoor fan is, the more sufficient the pressure relief of the system load is. When the exhaust temperature is lower, the system load of the air conditioner is lower, and at the moment, the outdoor fan only needs to be operated for a short time to ensure that the system load is fully decompressed.
Fig. 2 is a schematic flowchart of an air conditioner control method according to another embodiment of the present invention. In some embodiments, referring to fig. 2, for a model with an adjustable wind speed of an outdoor fan, after acquiring the discharge temperature of a compressor, the control method of the present invention further includes:
determining a first operation speed of the outdoor fan within a first time period according to the exhaust temperature, namely determining a first operation speed of the outdoor fan which continues to operate after the compressor is stopped according to the exhaust temperature; and
controlling the outdoor fan to operate for a first time period according to a first operation speed and then stopping operating; wherein
The first operation speed and the exhaust temperature form positive correlation, and the first operation speed is less than or equal to the preset highest wind speed of the outdoor fan.
That is to say, for the model with adjustable air speed of the outdoor fan, the air conditioner can be more effectively decompressed by controlling the running speed of the outdoor fan in the prolonged running time. In particular, the operation speed of the outdoor fan in the prolonged operation time is also set to be in positive correlation with the exhaust temperature, namely, when the exhaust temperature is higher, the operation speed of the outdoor fan in the prolonged operation time is higher (but not exceeding the preset maximum wind speed of the outdoor fan); when the exhaust temperature is lower, the running speed of the outdoor fan in the prolonged running time is smaller. When the exhaust temperature is higher, the system load of the air conditioner is larger, and at the moment, the outdoor fan runs at a higher running speed, so that the heat exchange can be increased, and the system load pressure relief is more sufficient. When the exhaust temperature is lower, the system load of the air conditioner is lower, and at the moment, the outdoor fan only needs to operate at a lower operation speed within the prolonged operation time to ensure that the system load is fully decompressed.
In some embodiments, when the exhaust temperature is in the interval of (T)1，T2) When the first time length is t1The first operation speed is the operation speed of the outdoor fan before the compressor stops operating; when the exhaust temperature is in the interval of [ T ]2Infinity), the first time period is t2The first running speed is the preset highest wind speed of the outdoor fan; wherein, t2Greater than t1. Obviously, T1Less than T2. Specifically, when the exhaust temperature is in the interval of (T)1，T2) In the meantime, the value of the exhaust temperature is not very high, and at this time, the outdoor fan only needs to operate at the operation speed t before the compressor stops operating1The pressure can be fully released when the time is long, and the phenomenon that the air conditioner is abnormally stopped or is protected to stop due to overlarge system load or overhigh temperature when the compressor is started again is avoided on the premise of avoiding more energy consumption. When the exhaust temperature is in the interval of [ T ]2Infinity), the value of the exhaust temperature is relatively high, at which time the outdoor fan needs to operate at its preset maximum wind speed t2The duration can be long enough to ensure that the system is adequately vented.
Those skilled in the art canIt is understood that for different models, under different application environments, T1、T2、t1、t2The values of (A) are also different.
In some embodiments, the shutdown command for instructing the compressor of the air conditioner to stop operating may include a protection shutdown signal and a remote shutdown signal transmitted through a remote controller. That is to say, no matter the air conditioner receives the remote control shutdown signal or the protection shutdown signal sent by the remote controller, the outdoor fan is prompted to continue to operate after the compressor is shut down, so that the pressure of the air conditioner is prompted to be relieved, and the system load of the air conditioner is reduced.
Specifically, the protection shutdown signal referred to in the present invention may include a signal generated by a protection shutdown due to an excessive temperature, a signal generated by current protection, a signal generated by turning off a temperature sensor, a signal generated when an indoor temperature reaches a set temperature, and the like.
The inventor of the invention realizes that the pressure relief speed of the whole air conditioner can be improved because the indoor fan continuously supplies air after the compressor is stopped, so after the compressor stops running, the control method of the application also determines the prolonged running time and/or the running speed of the indoor fan in the prolonged running time according to the exhaust temperature and the indoor environment temperature, and the speed of reducing the system load of the air conditioner is improved.
Fig. 3 is a schematic control flowchart of an indoor fan according to an embodiment of the present invention. Specifically, referring to fig. 3, when the shutdown command is a remote shutdown signal sent by a remote controller, the control method of the present invention further includes:
when the compressor stops running, controlling an indoor fan of the air conditioner to continue running for a preset time, and acquiring the indoor environment temperature and the exhaust temperature of the compressor;
determining a second time length for which the indoor fan needs to continue to operate after the indoor fan operates for a preset time length according to the indoor environment temperature and the exhaust temperature; and
and controlling the indoor fan to stop running after running for the second time.
That is, when the shutdown instruction is a remote shutdown signal sent by a remote controller, after the compressor is shutdown, the indoor fan automatically continues to operate for a period of time (preset time), and then a second time period required to continue to operate after the indoor fan automatically operates for the preset time period is determined according to the indoor environment temperature and the exhaust temperature of the compressor. Therefore, the extended operation time (namely the second time duration) of the indoor fan is determined according to the exhaust temperature after the compressor is stopped and the indoor environment temperature, the exhaust temperature of the compressor can accurately reflect the actual system load of the air conditioner at the moment, and the indoor environment temperature can accurately reflect the current indoor overall environment, so that the extended operation time of the indoor fan can be matched with the actual system load of the air conditioner on the premise of not influencing the indoor overall environment.
Further, the second period of time is positively correlated with the exhaust temperature at the same indoor ambient temperature. That is, the higher the exhaust temperature is, the larger the value of the second period of time is at the same indoor ambient temperature; the lower the exhaust temperature, the smaller the value of the second period of time. When the exhaust temperature is higher, the system load of the air conditioner is larger, and at the moment, the longer the prolonged operation time of the indoor fan is, the more sufficient the pressure relief of the system load is. When the exhaust temperature is lower, the system load of the air conditioner is lower, and at the moment, the indoor fan only needs to be operated for a short time to ensure that the system load is fully decompressed.
The second time period may have a positive correlation with the indoor ambient temperature at the same exhaust temperature; that is, the higher the indoor ambient temperature is, the larger the value of the second period of time is at the same exhaust temperature; the lower the indoor ambient temperature, the smaller the value of the second period of time.
In some embodiments, after obtaining the discharge temperature of the compressor, the control method of the present invention may further include:
determining a second running speed of the indoor fan within a second time period according to the exhaust temperature;
controlling the indoor fan to operate for a second time at a second operation speed and then stopping operating;
the second operation speed is in positive correlation with the exhaust temperature, and the second operation speed is less than or equal to the preset highest wind speed of the indoor fan.
That is, the air conditioner may be more effectively depressurized by controlling the operating speed of the indoor fan for its extended operating time (i.e., the second duration). In particular, the higher the exhaust temperature, the greater the operating speed of the indoor fan (but not exceeding the preset maximum wind speed of the indoor fan) during its extended operating time; when the exhaust temperature is lower, the running speed of the indoor fan in the prolonged running time is smaller. When the exhaust temperature is higher, the system load of the air conditioner is larger, and at the moment, the indoor fan runs at a higher running speed, so that the heat exchange can be increased, and the system load pressure relief is more sufficient. When the exhaust temperature is lower, the system load of the air conditioner is lower, and at the moment, the indoor fan only needs to operate at a lower operation speed within the prolonged operation time to ensure that the system load is fully decompressed.
Specifically, after the compressor stops operating, the indoor fan continues to operate for a preset time period according to the wind speed before the compressor stops operating. When the exhaust temperature is in the range of (T)1，T2) When the second operation speed is the wind speed before the compressor stops operating. When the exhaust temperature is in the interval of [ T ]2And infinity), the second operating speed is the preset maximum wind speed of the indoor fan. Obviously, T1Less than T2. Specifically, when the exhaust temperature is in the interval of (T)1，T2) When the air conditioner is started again, the air conditioner is stopped abnormally or the air conditioner is stopped in a protective mode due to overlarge system load or overhigh temperature when the compressor is started again. When the exhaust temperature is in the interval of [ T ]2And infinity), the value of the exhaust temperature is relatively high, and at the moment, the indoor fan needs to operate for the second time according to the preset maximum wind speed to ensure that the system is fully decompressed.
Referring to fig. 3, when the shutdown command is a protection shutdown signal, the control method of the present invention further includes:
when an indoor fan of the air conditioner continues to operate for a preset time after a compressor stops operating, acquiring the exhaust temperature of the compressor;
determining a third operation speed after the indoor fan continues to operate for a preset time according to the exhaust temperature;
and controlling the indoor fan to continuously operate according to the third operating speed.
That is, when the stop command is a protection stop signal, the indoor fan is continuously operated after the compressor is stopped, but the speed of operation may be different at different time periods. The operation speed of the indoor fan (i.e., the third operation speed) is determined based on the discharge temperature at that time, during a time after the indoor fan continues to operate for a preset time period since the compressor stops operating. At the moment, the exhaust temperature of the compressor can accurately reflect the actual system load of the air conditioner, so that the running speed of the indoor fan after running for a preset time can be matched with the actual system load of the air conditioner.
In some embodiments, after the compressor stops operating, the indoor fan continues to operate for a preset time period at the wind speed before the compressor stops operating. When the exhaust temperature is in the range of (T)1，T2) At this time, the third operation speed is a wind speed higher by one level than the wind speed of the indoor fan before the compressor stops operating. When the exhaust temperature is in the interval of [ T ]2And infinity), the third operating speed is the preset maximum wind speed of the indoor fan. Obviously, T1Less than T2. Specifically, when the exhaust temperature is in the interval of (T)1，T2) When the air conditioner is started, the indoor fan is stopped, and the outdoor fan is stopped. When the exhaust temperature is in the interval of [ T ]2And infinity), the value of the exhaust temperature is relatively high, and at the moment, the indoor fan needs to operate for the third time according to the preset maximum wind speed to ensure that the system is fully decompressed.
In some casesIn one embodiment, when the stop command received by the air conditioner is a protection stop signal, and when the discharge temperature of the compressor is less than T1In the meantime, the operation speed of the indoor fan is changed back to the speed before the compressor stops to avoid energy waste.
The invention also provides an air conditioner which operates according to the control method described in any one of the above embodiments. Therefore, after the shutdown instruction is received to prompt the compressor to be shut down, the outdoor fan cannot be stopped immediately, the running time needs to be prolonged, the pressure of the air conditioner is relieved, the system load of the air conditioner is reduced, the phenomenon that the air conditioner is abnormally shut down or is protected to be shut down due to overlarge system load or overhigh temperature when the compressor is started again is reduced, and the experience effect of a user is improved. The extended operation time (i.e. the first time duration) of the outdoor fan is determined according to the exhaust temperature after the compressor is stopped, because the exhaust temperature of the compressor can accurately reflect the actual system load of the air conditioner at the time, therefore, the extended operation time of the outdoor fan can be matched with the actual system load of the air conditioner, the system load cannot be really reduced due to the fact that the extended operation time of the outdoor fan is too short, and the energy consumption of the air conditioner cannot be increased due to the fact that the extended operation time of the outdoor fan is too long. The prolonged operation time (namely the first time length) of the outdoor fan is in positive correlation with the exhaust temperature, when the exhaust temperature is lower, the system load of the air conditioner is smaller, and at the moment, the outdoor fan only needs to be shortened for prolonging the operation time to ensure that the system load is fully decompressed.
Further, the air conditioner can also comprise a temperature sensor for acquiring the exhaust temperature of the compressor and a controller for controlling the start and stop of the compressor and the outdoor fan. Specifically, the controller is used for controlling the compressor to stop running after receiving the stop instruction, determining a first time length that the outdoor fan of the air conditioner needs to continue running after the compressor stops running according to the exhaust temperature at the time, and further controlling the outdoor fan to stop running after the outdoor fan runs for the first time length, wherein the first time length is in positive correlation with the exhaust temperature.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. A method of controlling an air conditioner, comprising:
receiving a stop instruction for indicating that a compressor of the air conditioner stops operating;
controlling the compressor to stop running, and acquiring the exhaust temperature of the compressor;
determining a first time length for which an outdoor fan of the air conditioner needs to continue to operate after the compressor stops operating according to the exhaust temperature, wherein the first time length is in positive correlation with the exhaust temperature; and
controlling the outdoor fan to operate for the first time period and then stopping operating;
the shutdown instruction comprises a protection shutdown signal and a remote control shutdown signal sent by a remote controller;
when the shutdown instruction is a remote shutdown signal sent by a remote controller, the control method further comprises:
when the compressor stops operating, controlling an indoor fan of the air conditioner to continue operating for a preset time, and acquiring the indoor environment temperature and the exhaust temperature of the compressor;
determining a second time length for which the indoor fan needs to continue to operate after the indoor fan operates for a preset time length according to the indoor environment temperature and the exhaust temperature; and
controlling the indoor fan to operate for the second time period and then stopping operating; wherein
The second period of time is positively correlated with the exhaust temperature at the same indoor ambient temperature.
2. The control method according to claim 1, characterized in that after acquiring the discharge temperature of the compressor, the control method further comprises:
determining a first operating speed of the outdoor fan within the first time period according to the exhaust temperature;
controlling the outdoor fan to operate for the first time period according to the first operating speed and then stopping operating;
the first operating speed and the exhaust temperature form positive correlation, and the first operating speed is less than or equal to the preset highest wind speed of the outdoor fan.
3. The control method according to claim 2,
when the exhaust temperature is in the interval of (T)1，T2) When the first time length is t1The first operation speed is an operation speed of the outdoor fan before the compressor stops operating;
when the exhaust temperature is in the interval of [ T2Infinity), the first time period is t2The first running speed is the preset highest wind speed of the outdoor fan; wherein
t2Greater than t1。
4. The control method according to claim 1, characterized in that after acquiring the discharge temperature of the compressor, the control method further comprises:
determining a second operating speed of the indoor fan within the second time period according to the exhaust temperature;
controlling the indoor fan to operate for the second time period according to the second operation speed and then stopping operating;
the second operating speed and the exhaust temperature form positive correlation, and the second operating speed is less than or equal to the preset highest wind speed of the indoor fan.
5. The control method according to claim 4,
when the compressor stops running, the indoor fan continues to run for the preset time according to the wind speed before the compressor stops running;
when the exhaust temperature is in the interval of (T)1，T2) When the second running speed is the wind speed before the compressor stops running;
when the exhaust temperature is in the interval of [ T2And infinity), the second running speed is the preset highest wind speed of the indoor fan.
6. The control method according to claim 1, wherein when the shutdown instruction is a guard shutdown signal, the control method further comprises:
when the indoor fan of the air conditioner continues to operate for a preset time after the compressor stops operating, acquiring the exhaust temperature of the compressor;
determining a third operation speed of the indoor fan after the indoor fan continues to operate for a preset time according to the exhaust temperature;
and controlling the indoor fan to continuously operate according to the third operating speed.
7. The control method according to claim 6,
when the compressor stops running, the indoor fan continues to run for the preset time according to the wind speed before the compressor stops running;
when the exhaust temperature is in the interval of (T)1，T2) When the third operation speed is higher than the wind speed of the indoor fan by one level before the compressor stops operating;
when the exhaust temperature is in the interval of [ T2And infinity), the third operating speed is the preset maximum wind speed of the indoor fan.
8. An air conditioner, characterized in that it is operated according to the control method of any one of claims 1 to 7.
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| CN115540193A (en) * | 2022-08-29 | 2022-12-30 | 青岛海尔空调器有限总公司 | Control method and control device of air conditioner and air conditioner |
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| CN110145843A (en) | 2019-08-20 |
| CN112594885B (en) | 2022-09-06 |
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