CN110671744B - Air conditioner and constant temperature dehumidification control method thereof - Google Patents
Air conditioner and constant temperature dehumidification control method thereof Download PDFInfo
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- CN110671744B CN110671744B CN201911093093.6A CN201911093093A CN110671744B CN 110671744 B CN110671744 B CN 110671744B CN 201911093093 A CN201911093093 A CN 201911093093A CN 110671744 B CN110671744 B CN 110671744B
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner and a control method for constant temperature dehumidification thereof, wherein the air conditioner comprises an outdoor unit, a control unit and a control unit, wherein the outdoor unit comprises an outdoor fan, a compressor, an outdoor heat exchanger and an outdoor throttling mechanism which are sequentially connected; the indoor unit comprises an indoor fan, an indoor throttling mechanism, an indoor heat exchanger and a multi-way valve, wherein the indoor heat exchanger comprises at least two heat exchange parts, one ends of the at least two heat exchange parts are respectively connected to the multi-way valve, the other ends of the at least two heat exchange parts are respectively connected to the outdoor throttling mechanism through the indoor throttling mechanism or directly, the at least two heat exchange parts form a parallel structure through the communication of the multi-way valve, or at least one heat exchange part connected with the indoor throttling mechanism is connected with the outdoor heat exchanger in parallel, and the control mechanism is used for controlling the indoor heat exchanger. Therefore, the air conditioner can control the indoor temperature and the indoor humidity at the same time, and the temperature of the indoor environment is not influenced while effective dehumidification is ensured.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner and a constant-temperature dehumidification control method thereof.
Background
The air conditioner generally has main functions of cooling, heating, ventilation, dehumidification and the like. The conventional air conditioner cannot control the temperature and the humidity simultaneously in the dehumidification process, and when the indoor humidity reaches a set value, the environment temperature tends to be lower, so that the thermal comfort is affected. Therefore, it is desirable to provide an air conditioner that can control the indoor temperature and humidity simultaneously during the dehumidification process, and that does not affect the indoor environment temperature while effectively dehumidifying.
Disclosure of Invention
The invention solves the problem of providing an air conditioner capable of controlling indoor temperature and humidity simultaneously in the dehumidification process, and guaranteeing that the indoor environment temperature is not influenced while the effective dehumidification is realized.
In order to solve the above problems, the present invention provides an air conditioner comprising:
The outdoor unit comprises an outdoor fan, a compressor, an outdoor heat exchanger and an outdoor throttling mechanism which are connected in sequence;
The indoor unit comprises an indoor fan, an indoor throttling mechanism, an indoor heat exchanger and a multi-way valve, wherein the indoor heat exchanger comprises at least two heat exchange parts, one ends of the at least two heat exchange parts are respectively connected to the multi-way valve, the other ends of the at least two heat exchange parts are respectively connected to the outdoor throttling mechanism through the indoor throttling mechanism or directly, the at least two heat exchange parts form a parallel structure through the communication of the multi-way valve, or at least one heat exchange part connected with the indoor throttling mechanism is connected with the outdoor heat exchanger in parallel;
and the control mechanism is used for controlling the compressor, the outdoor throttling mechanism, the outdoor fan, the indoor throttling mechanism, the indoor fan and the multi-way valve.
Therefore, the two parts of the indoor heat exchangers of the air conditioner can be used as an evaporator or a condenser at the same time so as to quickly reduce or raise the temperature, or respectively used as the evaporator and the condenser, and can be controlled in real time according to the relation between the indoor actual temperature and humidity and the temperature and humidity set by a user in the dehumidification operation process, thereby achieving the aim of reducing the indoor temperature without excessively low temperature when dehumidification.
Further, in the indoor unit, the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, the multi-way valve is a three-way valve, wherein the first end of the first indoor heat exchanger is connected with the indoor throttling mechanism, the indoor throttling mechanism is connected to the outdoor throttling mechanism, the second end of the first indoor heat exchanger is connected with the third end of the three-way valve, the first end of the second indoor heat exchanger is connected to the outdoor throttling mechanism, the second end of the second indoor heat exchanger is connected to the second end of the three-way valve, the first end of the three-way valve is connected to an exhaust port of the compressor, and meanwhile, the second end of the three-way valve is connected to an air suction port of the compressor.
Therefore, through the arrangement of the first indoor heat exchanger, the second indoor heat exchanger and the three-way valve connected with the first indoor heat exchanger, the real-time switching of the functions of a plurality of heat exchange parts of the indoor heat exchangers can be conveniently realized, and meanwhile, the flow flowing through each heat exchanger can be more accurately and conveniently controlled through a plurality of parallel modes of the three-way valve forming a pipeline.
Further, in the air conditioner, the indoor throttling mechanism is completely opened, the outdoor throttling mechanism is partially throttled, when the second end and the third end of the three-way valve are communicated, the first indoor heat exchanger pipeline and the second indoor heat exchanger pipeline are connected in parallel and then are communicated with the outdoor heat exchanger, the first indoor heat exchanger and the second indoor heat exchanger are used as evaporators, and the outdoor heat exchanger is used as a condenser.
Through the structure that constitutes first indoor heat exchanger pipeline and the parallelly connected of second indoor heat exchanger pipeline, can reduce indoor temperature and humidity fast under the circumstances of dehumidification while cooling down.
Further, in the air conditioner, the indoor throttling mechanism is partially throttled, the outdoor throttling mechanism is partially throttled, when the first end and the third end of the three-way valve are communicated, the outdoor heat exchanger pipeline is connected with the first indoor heat exchanger pipeline in parallel and then is communicated with the second indoor heat exchanger, the second indoor heat exchanger is used as an evaporator, and the first indoor heat exchanger and the outdoor heat exchanger are used as condensers.
By forming the structure that the outdoor heat exchanger pipeline is connected with the first indoor heat exchanger pipeline in parallel, the second indoor heat exchanger can serve as an evaporator to reduce the temperature and humidity of indoor air, the first indoor heat exchanger serves as condensation to emit heat to the indoor, and the outdoor heat exchanger serves as a condenser to emit heat generated by the operation of a compressor, so that the heat generated by the first indoor heat exchanger, the second indoor heat exchanger, the outdoor heat exchanger and the compressor is balanced.
Further, in the air conditioner, the indoor throttling mechanism is partially throttled, the first end and the third end of the three-way valve are communicated, when the outdoor throttling mechanism is completely closed, the first indoor heat exchanger is connected with the second indoor heat exchanger in series, the second indoor heat exchanger is used as an evaporator, and the first indoor heat exchanger is used as a condenser.
The second indoor heat exchanger is used as an evaporator to reduce the temperature and humidity of indoor air, the first indoor heat exchanger is used as a condenser to emit heat generated by the compressor into the indoor air, the heat lost by the second indoor heat exchanger used as the evaporator is balanced, the indoor environment temperature is further improved, and the outdoor throttle mechanism is closed, and the outdoor heat exchanger does not participate in heat exchange, so that the heat dissipation of the outdoor heat exchanger is omitted, and the indoor temperature can be effectively improved.
Further, the outdoor unit further comprises a four-way reversing valve, a first end of the four-way reversing valve is connected to an exhaust port of the compressor, a second end of the four-way reversing valve is connected with the outdoor heat exchanger, a third end of the four-way reversing valve is connected with an air suction port of the compressor, and a fourth end of the four-way reversing valve is connected to a second end of the three-way valve.
Further, the first end and the second end of the four-way reversing valve of the outdoor unit are respectively communicated with the third end and the fourth end of the four-way reversing valve of the outdoor unit in the refrigerating or dehumidifying process of the air conditioner, and the second end and the third end of the four-way reversing valve of the outdoor unit are respectively communicated with the first end and the fourth end of the four-way reversing valve of the outdoor unit in the heating process of the air conditioner.
Through the setting of four-way reversing valve for the air conditioner can realize conventional refrigeration, heat, dehumidification function, and can realize keeping indoor environment temperature in certain within range in dehumidification operation in-process, can guarantee indoor environment's thermal comfort when dehumidifying.
According to another aspect of the present invention, there is provided a control method for constant temperature dehumidification of an air conditioner, employing the air conditioner as described above, comprising:
S1, comparing the indoor environment temperature with the temperature set by a user to obtain a comparison result;
s2, controlling the opening degree of the throttle mechanism, the state of the valve and the running rotating speed of the compressor according to the comparison result, so as to control the running states of at least two heat exchange parts of the indoor heat exchanger and the outdoor heat exchanger, and controlling the indoor environment temperature to reach the set temperature while dehumidifying.
The indoor environment temperature is compared with the set temperature of the user to control the air conditioner pipeline structure, so that the two heat exchangers of the indoor unit of the air conditioner can be switched in real time to serve as evaporators or condensers, and meanwhile, the indoor environment temperature and the humidity are controlled in real time according to the relation between the indoor actual temperature and the humidity and the set temperature and humidity of the user of the air conditioner in the dehumidification operation process, and the proper indoor temperature can be ensured while dehumidification is performed.
Further, the step S2 includes:
If the comparison result shows that the indoor environment temperature is higher than the user set temperature, the indoor throttling mechanism is controlled to be fully opened, the outdoor throttling mechanism is partially throttled, and the at least two heat exchange parts of the indoor heat exchanger form a parallel structure through the communication of the multi-way valve and serve as an evaporator, and the outdoor heat exchanger serves as a condenser;
And controlling the throttle degree of the outdoor throttle mechanism and the running rotating speed of the compressor according to the data detected by the indoor environment temperature sensor and the indoor environment humidity sensor, and reducing the indoor environment temperature to the set temperature while dehumidifying.
The first indoor heat exchanger and the second indoor heat exchanger are formed to be used as evaporators at the same time, so that the indoor temperature and humidity can be reduced rapidly under the condition of dehumidifying and cooling at the same time.
Further, the step S2 includes:
If the comparison result shows that the indoor environment temperature is equal to the set temperature of the user, controlling the indoor throttling mechanism to throttle, and controlling the outdoor throttling mechanism to throttle, wherein the communication of the multi-way valve enables at least one heat exchange part connected with the indoor throttling mechanism to be connected with the outdoor heat exchanger in parallel to serve as a condenser;
And controlling the throttle degree of the indoor throttle mechanism and the throttle degree of the outdoor throttle mechanism and the running rotating speed of the compressor, so that the heat generated by the indoor heat exchanger, the outdoor heat exchanger and the compressor is balanced.
The heat exchange part connected with the indoor throttling mechanism is used as a condenser to emit heat to the indoor, the heat exchange part and the outdoor heat exchanger are used as a condenser to emit heat generated by the operation of the compressor, and the rest heat exchange parts of the indoor heat exchangers are used as evaporators to reduce the temperature and humidity of indoor air, so that heat exchange of the heat exchangers and the compressors can reach balance, and the current indoor environment temperature is kept.
Further, the step S2 includes:
If the indoor environment temperature is less than the user set temperature, controlling the indoor throttling mechanism to partially throttle, and completely closing the outdoor throttling mechanism, wherein the communication of the multi-way valve enables at least one heat exchange part connected with the indoor throttling mechanism to be connected with the outdoor heat exchanger in parallel, and the at least one heat exchange part connected with the indoor throttling mechanism is used as a condenser, and the outdoor heat exchanger does not participate in heat exchange;
And controlling the throttle degree of the indoor throttle mechanism and the running rotating speed of the compressor according to the data detected by the indoor environment temperature sensor and the indoor environment humidity sensor, and improving the indoor environment temperature while dehumidifying.
The heat loss of the indoor heat exchanger serving as the evaporator can be balanced, the indoor environment temperature is further improved, and the outdoor heat exchanger does not participate in heat exchange, so that the heat loss of the outdoor heat exchanger is omitted, and the indoor temperature can be effectively improved.
Drawings
FIG. 1 is a schematic view of an air conditioner according to an embodiment of the present invention;
Fig. 2 is a flowchart of a constant temperature dehumidification control method of the air conditioner of the present invention.
Reference numerals illustrate:
1-air conditioner, 2-outdoor unit, 3-indoor unit, 4-control mechanism, 21-compressor, 22-four-way reversing valve, 23-outdoor throttle mechanism, 24-outdoor heat exchanger, 25-outdoor fan, 31-indoor throttle mechanism, 32-first indoor heat exchanger, 33-second indoor heat exchanger, 34-indoor fan, 35-indoor environment temperature sensor, 36-indoor environment humidity sensor and 37-three-way valve.
Detailed Description
The invention provides an air conditioner and a constant-temperature dehumidification control method thereof, wherein the air conditioner comprises an outdoor unit, an indoor unit and a control mechanism, the outdoor unit comprises an outdoor fan, a compressor, an outdoor heat exchanger and an outdoor throttling mechanism which are sequentially connected, the indoor unit comprises an indoor fan, an indoor throttling mechanism, an indoor heat exchanger and a multi-way valve, the indoor heat exchanger comprises at least two heat exchange parts, one ends of the at least two heat exchange parts are respectively connected to the multi-way valve, the other ends of the at least two heat exchange parts are respectively connected to the outdoor throttling mechanism through the indoor throttling mechanism or are directly connected to the outdoor throttling mechanism, the at least two heat exchange parts are connected in parallel through the communication of the multi-way valve, or at least one heat exchange part connected with the indoor throttling mechanism is connected with the outdoor heat exchanger in parallel, and the control mechanism is used for controlling the compressor, the outdoor throttling mechanism, the outdoor fan, the indoor throttling mechanism, the indoor fan and the multi-way valve.
Therefore, in the conventional refrigerating and heating modes, the two parts of heat exchangers in the air conditioner indoor unit can be used as an evaporator or a condenser at the same time, in the dehumidifying operation process, the two parts of heat exchangers in the air conditioner indoor unit can be respectively used as the evaporator and the condenser, and meanwhile, the air conditioner controller can control in real time according to the relation between the indoor actual temperature and humidity and the temperature and humidity set by an air conditioner user in the dehumidifying operation process, so that the aim of dehumidifying and guaranteeing proper indoor temperature is fulfilled.
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In a first exemplary embodiment of the present invention, an air conditioner is provided. Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention. As shown in fig. 1, an air conditioner 1 according to the present invention includes an outdoor unit 2, an indoor unit 3, a control mechanism 4, and corresponding air conditioner connection pipes. The air conditioner outdoor unit 2 comprises a compressor 21, a four-way reversing valve 22, an outdoor throttling mechanism 23, an outdoor heat exchanger 24 and an outdoor fan 25, and the air conditioner indoor unit 3 comprises an indoor throttling mechanism 31, a first indoor heat exchanger 32, a second indoor heat exchanger 33, an indoor fan 34, an indoor environment temperature sensor 35, an indoor environment humidity sensor 36 and a three-way valve 37.
Through the structure, the real-time switching of the functions of the heat exchange parts of the indoor heat exchangers can be conveniently realized, and meanwhile, the flow rate flowing through each heat exchanger can be more accurately and conveniently controlled through a plurality of parallel modes of the three-way valve forming pipeline.
Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 again, in the outdoor unit of the air conditioner, the exhaust port of the compressor 21 is connected to the first end of the four-way reversing valve 22, the second end of the four-way reversing valve 22 is connected to the first end of the outdoor heat exchanger 24, the outdoor heat exchange is performed, the second end of the 24 is connected to the outdoor throttle mechanism 23, the outdoor fan 25 is used for exchanging heat with the outdoor heat exchanger 24, the third end of the four-way reversing valve 22 is connected to the air suction port of the compressor 21, and the fourth end of the four-way reversing valve 22 is connected to the second end of the three-way valve 37 of the indoor unit.
In the indoor unit of the air conditioner, a first end of a first indoor heat exchanger 32 is connected with an indoor throttling mechanism 31 and is connected with an outdoor throttling mechanism 23, a second end of the first indoor heat exchanger 32 is connected with a third end of a three-way valve 37, a first end of a second indoor heat exchanger 33 is connected with the outdoor throttling mechanism 23, a second end of the second indoor heat exchanger 33 is connected with a second end of the three-way valve 37, a first end of the three-way valve 37 is connected with a second end of a four-way reversing valve of the outdoor unit, and an indoor fan 34 is used for exchanging heat of the first indoor heat exchanger 32 and the second indoor heat exchanger 33.
The air conditioner is characterized in that the first end, the second end, the third end and the fourth end of the four-way reversing valve 22 of the outdoor unit are respectively communicated in the refrigerating or dehumidifying operation process, and the second end, the third end, the first end and the fourth end of the four-way reversing valve 22 of the outdoor unit are respectively communicated in the heating process.
The outdoor throttle 23 and the indoor throttle 31 in the air conditioner may be completely closed or completely opened or partially throttled. The outdoor throttle mechanism 23 and the indoor throttle mechanism 31 may be throttle elements such as an electronic expansion valve. For the indoor throttling mechanism 31 of the indoor unit, the indoor throttling mechanism 31 is completely opened in the refrigerating or heating process of the air conditioner without throttling effect, and the indoor throttling mechanism 31 is not completely opened in the cooling and dehumidifying process without cooling and can control the throttling degree through the control mechanism 4. For the outdoor throttle mechanism 23 of the outdoor unit, the outdoor throttle mechanism 23 is completely opened without throttle effect in the refrigerating or heating process of the air conditioner, the outdoor throttle mechanism 23 is not completely opened to control a certain throttle degree if the indoor environment temperature needs to be reduced or kept unchanged in the dehumidifying process, and the outdoor throttle mechanism 23 is closed if the indoor environment temperature needs to be increased, so that the outdoor heat exchanger does not participate in heat exchange.
And for the three-way valve 37 of the indoor unit, the second and third ends of the three-way valve 37 are communicated in the refrigerating or heating process of the air conditioner, and the three-way valve 37 can be communicated with the first and third ends of the three-way valve or the second and third ends of the three-way valve in the dehumidifying process of the air conditioner. The three-way valve forms a refrigerant circulation pipeline structure that the pipeline of the outdoor heat exchanger 24 is connected with the pipeline of the first indoor heat exchanger 32 in parallel and then is communicated with the second indoor heat exchanger 33 when the first three-way valve is communicated with the first three-way valve, and forms a refrigerant circulation pipeline structure that the pipeline of the first indoor heat exchanger 32 is connected with the pipeline of the second indoor heat exchanger 33 in parallel and then is communicated with the outdoor heat exchanger 24 when the second three-way valve is communicated with the third three-way valve.
Specifically, in the cooling and dehumidifying process, when the second end and the third end of the three-way valve 37 are communicated, the first indoor heat exchanger 32 and the second indoor heat exchanger 33 are used as evaporators, the indoor temperature and the indoor humidity are simultaneously reduced, in the non-cooling and dehumidifying process, when the first end and the third end of the three-way valve 37 are communicated, the first indoor heat exchanger 32 is used as a condenser, the second indoor heat exchanger 33 is used as an evaporator, the second indoor heat exchanger 33 can continuously remove moisture in indoor air and reduce the temperature of the indoor air, and meanwhile, the first indoor heat exchanger 32 is used as a condenser to reheat the air dehumidified and cooled through the second indoor heat exchanger 33, so that the temperature of the indoor air is not reduced while the moisture is removed.
Therefore, when the indoor temperature is higher than the set value, the indoor temperature and the humidity can be reduced simultaneously by a cooling and dehumidifying method, and when the indoor temperature is lower than or equal to the set value, the first indoor heat exchanger 32 and the second indoor heat exchanger 33 in the indoor unit are respectively used as a condenser and an evaporator by a method of not cooling and dehumidifying, so that the indoor temperature is not excessively low while the indoor humidity is reduced.
In the above embodiment, the indoor heat exchanger includes a first indoor heat exchanger and a second indoor heat exchanger, it is understood that the indoor heat exchanger may be divided into a plurality of portions, and the plurality of portions may be used as a condenser or an evaporator at the same time, or used as a condenser or an evaporator respectively, where the number of the portions as the condenser or the evaporator is determined according to the deviation between the indoor actual environment temperature, the humidity and the user setting value.
Further, the indoor unit is further provided with an indoor environment temperature sensor 35 and an indoor environment humidity sensor 36, and the indoor environment temperature sensor 35 and the indoor environment humidity sensor 36 can collect the temperature and the air humidity of the indoor environment and feed back the collected data to the control mechanism 4.
The air conditioner further comprises a control mechanism 4, wherein the control mechanism 4 is electrically connected with the compressor 21, the four-way reversing valve 22, the outdoor throttling mechanism 23, the outdoor fan 25, the indoor throttling mechanism 31, the indoor fan 34 and the three-way valve 37, and can control the rotating speed of the compressor 21, the communication state of the four-way reversing valve 22, the throttling degree of the outdoor throttling mechanism 23, the operation state of the outdoor fan 25, the throttling degree of the indoor throttling mechanism 31, the operation state of the indoor fan 34 and the communication state of the three-way valve 37.
During the dehumidification operation, the control mechanism 4 can intelligently control the communication state of the three-way valve 37 and the throttle degrees of the outdoor throttle mechanism 23 and the indoor throttle mechanism 31 according to the data detected by the indoor environment temperature sensor 35 and the indoor environment humidity sensor 36, so that the indoor temperature is kept within a certain range while the indoor humidity is reduced, and the constant-temperature dehumidification function is achieved.
In a second exemplary embodiment of the present invention, a control method of constant temperature dehumidification of an air conditioner is provided. Fig. 2 is a flowchart of a control method of constant temperature dehumidification of an air conditioner according to the present invention. As shown in fig. 2, the control method includes:
S1, comparing the indoor environment temperature with the temperature set by a user to obtain a comparison result;
s2, controlling the opening degree of the throttle mechanism, the state of the valve and the running rotating speed of the compressor according to the comparison result, so as to control the running states of at least two heat exchange parts of the indoor heat exchanger and the outdoor heat exchanger, and controlling the indoor environment temperature to reach the set temperature while dehumidifying.
The indoor environment temperature is compared with the set temperature of the user to control the air conditioner pipeline structure, so that the two heat exchangers of the indoor unit of the air conditioner can be switched in real time to serve as evaporators or condensers, and meanwhile, the indoor environment temperature and the humidity are controlled in real time according to the relation between the indoor actual temperature and the humidity and the set temperature and humidity of the user of the air conditioner in the dehumidification operation process, and the proper indoor temperature can be ensured while dehumidification is performed.
In this embodiment, the air conditioner according to the first embodiment is used, wherein the throttle mechanism includes an indoor throttle mechanism 31 and an outdoor throttle mechanism 23, and at least two heat exchanging portions of the indoor heat exchangers are a first indoor heat exchanger and a second indoor heat exchanger.
Specifically, in the step S2, three situations exist in the actual dehumidification operation process, including:
If the comparison result is that the indoor environment temperature is higher than the user set temperature, the indoor environment temperature needs to be reduced while dehumidification is performed at this time S201.
In this case, the indoor throttle mechanism 31 is controlled to be fully opened, the outdoor throttle mechanism 23 is partially throttled, the second and third ends of the three-way valve 37 are communicated, the first indoor heat exchanger 32 and the second indoor heat exchanger 33 are used as evaporators, and the outdoor heat exchanger 24 is used as a condenser.
Thus, the indoor environment temperature and humidity can be quickly reduced, and the indoor environment temperature and humidity can be controlled according to the data detected by the indoor environment temperature sensor 35 and the indoor environment humidity sensor 36, so that the indoor environment temperature is reduced to the set temperature while dehumidification is ensured.
S202, if the comparison result is that the indoor environment temperature is equal to the user set temperature, dehumidification is needed at the moment, and meanwhile the indoor environment temperature is kept unchanged.
In this case, the indoor throttle mechanism 31 is controlled to be partially throttled, the outdoor throttle mechanism 23 is partially throttled, the first and third ends of the three-way valve 37 are communicated, the second indoor heat exchanger 33 is used as an evaporator for reducing the temperature and humidity of indoor air, the first indoor heat exchanger 32 is used as a condenser for radiating heat to the indoor space to balance the heat lost by the use of the second indoor heat exchanger 33 as the evaporator, and the outdoor heat exchanger 24 is used as a condenser for radiating heat generated by the operation of the compressor. The control means 4 controls the opening degrees of the indoor throttle means 31 and the outdoor throttle means 23 and the operation rotation speed of the compressor so that the heat generated by the first indoor heat exchanger 32, the second indoor heat exchanger 33, the outdoor heat exchanger 24 and the compressor is balanced.
The heat exchange part connected with the indoor throttling mechanism is used as a condenser to emit heat to the indoor, the outdoor heat exchanger is used as a condenser to emit heat generated by the operation of the compressor, and the rest heat exchange parts of the indoor heat exchanger are used as evaporators to reduce the indoor air temperature and humidity, so that the heat exchange of the heat exchangers and the compressors can reach balance, and the current indoor environment temperature is kept.
If the indoor environment temperature is less than the user set temperature, the indoor environment temperature needs to be increased while dehumidification is performed at this time S203.
In this case, the indoor throttle mechanism 31 is controlled to be partially throttled, the first and third ends of the three-way valve 37 are communicated, the second indoor heat exchanger 33 is used as an evaporator for reducing the temperature and humidity of indoor air, the first indoor heat exchanger 32 is used as a condenser for radiating heat into the room to balance the heat lost by the use of the second indoor heat exchanger 33 as the evaporator, the outdoor throttle mechanism 23 is completely closed, and the outdoor heat exchanger 24 does not participate in heat exchange. The first indoor heat exchanger 32 radiates heat generated by the compressor into indoor air for increasing indoor ambient temperature. The control mechanism 4 can intelligently control the communication state of the three-way valve 37 and the throttle degrees of the outdoor throttle mechanism 23 and the indoor throttle mechanism 31 according to the data detected by the indoor environment temperature sensor 35 and the indoor environment humidity sensor 36, so that the indoor humidity is reduced while the indoor temperature is kept within a certain range, and the indoor environment temperature is increased while dehumidification is performed.
The heat loss of the indoor heat exchanger serving as the evaporator can be balanced, the indoor environment temperature is further improved, and the outdoor heat exchanger does not participate in heat exchange, so that the heat loss of the outdoor heat exchanger is omitted, and the indoor temperature can be effectively improved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (11)
1. An air conditioner, comprising:
An outdoor unit (2), wherein the outdoor unit (2) comprises an outdoor fan (25), a compressor (21), an outdoor heat exchanger (24) and an outdoor throttling mechanism (23) which are connected in sequence;
The indoor unit (3) comprises an indoor fan (34), an indoor throttling mechanism (31), an indoor heat exchanger and a multi-way valve, wherein the indoor heat exchanger comprises at least two heat exchange parts, one ends of the at least two heat exchange parts are respectively connected to the multi-way valve, the other ends of the at least two heat exchange parts are respectively connected to the outdoor throttling mechanism (23) through the indoor throttling mechanism (31) or directly, the multi-way valve is communicated so that the at least two heat exchange parts form a parallel structure, or at least one heat exchange part connected with the indoor throttling mechanism (31) is connected with the outdoor heat exchanger (24) in parallel, the indoor heat exchanger (3) comprises a first indoor heat exchanger (32) and a second indoor heat exchanger (33), the multi-way valve is a three-way valve (37), a first end of the first indoor heat exchanger (32) is connected with the indoor throttling mechanism (31), the indoor throttling mechanism (31) is connected to the outdoor throttling mechanism (23), a second end of the first indoor heat exchanger (32) is connected with the three-way valve (37), a third end of the second indoor heat exchanger (33) is connected with the three-way valve (37), a third end of the third heat exchanger (37) is connected with the three-way valve (37), meanwhile, the second end of the three-way valve (37) is connected to the air suction port of the compressor (21);
And the control mechanism (4) is used for controlling the compressor (21), the outdoor throttling mechanism (23), the outdoor fan (25), the indoor throttling mechanism (31), the indoor fan (34) and the multi-way valve.
2. An air conditioner according to claim 1, wherein in the air conditioner, the indoor throttling mechanism (31) is completely opened, the outdoor throttling mechanism (23) is partially throttled, when the second end and the third end of the three-way valve (37) are communicated, the pipeline of the first indoor heat exchanger (32) is connected in parallel with the pipeline of the second indoor heat exchanger (33) and then is communicated with the outdoor heat exchanger (24), and the first indoor heat exchanger (32) and the second indoor heat exchanger (33) are used as evaporators, and the outdoor heat exchanger (24) is used as a condenser.
3. An air conditioner according to claim 1, wherein in the air conditioner, the indoor throttling mechanism (31) is partially throttled, the outdoor throttling mechanism (23) is partially throttled, when the first end and the third end of the three-way valve (37) are communicated, the pipeline of the outdoor heat exchanger (24) is connected with the pipeline of the first indoor heat exchanger (32) in parallel and then is communicated with the second indoor heat exchanger (33), the second indoor heat exchanger (33) is used as an evaporator, and the first indoor heat exchanger (32) and the outdoor heat exchanger (24) are used as condensers.
4. An air conditioner according to claim 1, wherein in the air conditioner, the indoor throttle mechanism (31) is partially throttled, the first and third ends of the three-way valve (37) are communicated, when the outdoor throttle mechanism (23) is completely closed, the first indoor heat exchanger (32) is connected in series with the second indoor heat exchanger (33), the second indoor heat exchanger (33) is used as an evaporator, and the first indoor heat exchanger (32) is used as a condenser.
5. The air conditioner according to claim 1, wherein the outdoor unit (2) further comprises a four-way reversing valve (22), a first end of the four-way reversing valve (22) is connected to an exhaust port of the compressor (21), a second end of the four-way reversing valve (22) is connected to the outdoor heat exchanger (24), a third end of the four-way reversing valve (22) is connected to an air suction port of the compressor (21), and a fourth end of the four-way reversing valve (22) is connected to a second end of the three-way valve (37).
6. The air conditioner according to claim 5, wherein the first and second ends and the third and fourth ends of the four-way reversing valve (22) of the outdoor unit are respectively communicated during cooling or dehumidifying, and the second and third ends and the first and fourth ends of the four-way reversing valve (22) of the outdoor unit are respectively communicated during heating of the air conditioner.
7. The air conditioner according to claim 1, wherein an indoor environment temperature sensor (35) and an indoor environment humidity sensor (36) are further provided in the indoor unit (3) for collecting the temperature and air humidity of the indoor environment and feeding back the collected data to the control mechanism (4).
8. A control method for constant temperature dehumidification of an air conditioner, employing the air conditioner according to any one of claims 1 to 7, comprising:
S1, comparing the indoor environment temperature with the temperature set by a user to obtain a comparison result;
s2, controlling the opening degree of the throttle mechanism, the state of the valve and the running rotating speed of the compressor according to the comparison result, so as to control the running states of at least two heat exchange parts of the indoor heat exchanger and the outdoor heat exchanger, and controlling the indoor environment temperature to reach the set temperature while dehumidifying.
9. The control method according to claim 8, characterized in that the step S2 includes:
if the comparison result shows that the indoor environment temperature is higher than the user set temperature, the indoor throttling mechanism (31) is controlled to be completely opened, the outdoor throttling mechanism (23) is controlled to be partially throttled, and the at least two heat exchange parts of the indoor heat exchanger form a parallel structure through the communication of the multi-way valve and serve as an evaporator, and the outdoor heat exchanger (24) serves as a condenser;
the throttle degree of the outdoor throttle mechanism (23) and the operation rotation speed of the compressor (21) are controlled according to the data detected by the indoor environment temperature sensor (35) and the indoor environment humidity sensor (36), and the indoor environment temperature is reduced to the set temperature while dehumidification is performed.
10. The control method according to claim 8, characterized in that the step S2 includes:
If the comparison result shows that the indoor environment temperature is equal to the user set temperature, the indoor throttling mechanism (31) is controlled to be partially throttled, the outdoor throttling mechanism (23) is controlled to be partially throttled, and the multi-way valve is communicated so that at least one heat exchange part connected with the indoor throttling mechanism (31) is connected with the outdoor heat exchanger (24) in parallel to be used as a condenser;
The throttle degrees of the indoor throttle mechanism (31) and the outdoor throttle mechanism (23) and the operation rotation speed of the compressor (21) are controlled so that the heat generated by the indoor heat exchanger, the outdoor heat exchanger (24) and the compressor (21) is balanced.
11. The control method according to claim 8, characterized in that the step S2 includes:
If the indoor environment temperature is less than the user set temperature, the indoor throttling mechanism (31) is controlled to be partially throttled, the outdoor throttling mechanism (23) is completely closed, and the communication of the multi-way valve enables at least one heat exchange part connected with the indoor throttling mechanism (31) to be connected with the outdoor heat exchanger (24) in parallel, and the at least one heat exchange part connected with the indoor throttling mechanism (31) is used as a condenser, and the outdoor heat exchanger (24) does not participate in heat exchange;
The throttle degree of the indoor throttle mechanism (31) and the operation rotation speed of the compressor (21) are controlled according to the data detected by the indoor environment temperature sensor (35) and the indoor environment humidity sensor (36), and the indoor environment temperature is increased while dehumidification is performed.
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| CN111263569B (en) * | 2020-02-09 | 2021-07-27 | 苏州浪潮智能科技有限公司 | A data center cooling system |
| CN111503737B (en) * | 2020-05-08 | 2021-06-15 | 广东美的制冷设备有限公司 | Air conditioner, operation control method, and computer-readable storage medium |
| CN111503738B (en) * | 2020-05-08 | 2021-06-15 | 广东美的制冷设备有限公司 | Air conditioner, operation control method, and computer-readable storage medium |
| CN112944482A (en) * | 2021-03-26 | 2021-06-11 | 珠海格力电器股份有限公司 | Surface cooler, fan coil, air conditioner and surface cooler heat exchange control method |
| WO2023050622A1 (en) * | 2021-09-30 | 2023-04-06 | 青岛海信日立空调系统有限公司 | Air conditioning system |
| CN114517969A (en) * | 2022-04-02 | 2022-05-20 | 珠海市金品创业共享平台科技有限公司 | Control system and method for constant temperature of air conditioner, related equipment and air conditioner |
| CN115597215A (en) * | 2022-09-22 | 2023-01-13 | 宏源地能热泵科技（中山）有限公司（Cn） | Control method of air conditioner |
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