CN102829589A - Air conditioning system with defroster and central air conditioning hot water system - Google Patents

Air conditioning system with defroster and central air conditioning hot water system Download PDF

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Publication number
CN102829589A
CN102829589A CN2012103619033A CN201210361903A CN102829589A CN 102829589 A CN102829589 A CN 102829589A CN 2012103619033 A CN2012103619033 A CN 2012103619033A CN 201210361903 A CN201210361903 A CN 201210361903A CN 102829589 A CN102829589 A CN 102829589A
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China
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heat exchanger
heat
air
water
control valve
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CN102829589B (en
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国德防
宋强
李银银
刘景升
郑品迪
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Haier Group Corp
Qingdao Haier Air Conditioning Electric Co Ltd
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Haier Group Corp
Qingdao Haier Air Conditioning Electric Co Ltd
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Abstract

The invention discloses an air conditioning system with a defroster and a central air conditioning hot water system with the air conditioning system. The air conditioning system at least comprises a refrigeration and heating loop and a regenerator, wherein the refrigeration and heating loop is at least composed of a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve and indoor heat exchangers which are connected through pipelines; the regenerator is internally provided with two groups of heat exchangers which can output heat, and the heat exchangers are respectively connected with an air-conditioning system pipeline through the pipelines; the regenerator is also internally provided with a third heat exchanger used for storing heat for the regenerator, and a connecting pipeline of each heat exchanger is connected in series with a control valve; a circulating pipeline arranged between the indoor heat exchangers and the expansion valve is connected in series with a control valve III which is arranged between inlet access points of the two heat exchangers; waste heat of a compressor is utilized to store heat for the regenerator, when the outdoor heat exchanger generates frost deposit, the open and close of the electromagnetic valve are controlled, a refrigerant flows across the regenerator and simultaneously absorbs heat in the regenerator, and the heat is utilized to defrost; the utilization ratio of an energy source is improved; and the loss of the air conditioning system is reduced.

Description

Air-conditioning system and a kind of central air-conditioning hot-water heating system with defroster
Technical field
The present invention relates to air-conditioning technical field, relate in particular to a kind of central air-conditioning hot-water heating system that has the air-conditioning system of defroster and have this air-conditioning system.
Background technology
Existing air-conditioning system is when carrying out heating operation, and the cold-producing medium of the outdoor heat exchanger of flowing through needs constantly to absorb airborne heat in vaporescence, and because environment temperature is lower, outdoor heat exchanger is prone to take place the frosting phenomenon.The existence of frosting greatly reduces the heat exchange efficiency of heat exchanger, makes the complete machine performance descend; The existence of this kind phenomenon can cause the influence that more strengthens in the central air-conditioning hot-water heating system, at present; In cycle energy central air-conditioning hot-water heating system, the Defrost mode that extensively adopts is reverse cycle defrosting mode and hot-gas bypass Defrost mode, requires compressor to shut down earlier when the reverse cycle defrosting mode defrosts and accomplishes system's high-low pressure butt joint; Cross valve switching-over is then restarted compressor again and is made system's antikinesis defrosting, and the cross valve switching-over not only increases wearing and tearing; Produce noise, and be prone to make compressor " oil of running quickly ", the frequency of defrosting is high more; The frequency of the switching-over of compressor start and stop and cross valve is also high more, has shortened the life-span of compressor and cross valve greatly; Cause pressure of inspiration(Pi) low because of lacking low-temperature heat source when this kind mode defrosts, defrosting speed is slow, and defrosting was unclean when frosting was serious; Will absorb heat from the heat supply room during defrosting, it is violent to make that room temperature descends, and defrosting finishes has the sensation of blowing a cold wind over when recovering heat supply, reduces indoor comfort greatly.
The hot-gas bypass Defrost mode is the heat that utilizes the high-temperature exhaust air of compressor, and defrosting time is long, and suction superheat is low, is prone to make that compressor returns liquid, and simultaneously, high-temperature exhaust air pressure is high, compressor is produced certain impact, so the compressor security is also had considerable influence.
More than two kinds of Defrost modes all have certain drawback; Come defrost as in the process of defrosting, needing frequent switching-over of control cross valve or hot-gas bypass mode; Thereby can cause ambient temperature to descend, influence cross valve service life, there are a series of problems such as the slow and energy consumption of defrosting speed is big simultaneously.
Chinese patent document CN102128528A discloses a kind of heat accumulating type defrost system that is used for air source hot pump water heater, comprises compressor, gas-liquid separator, four-way change-over valve, outdoor heat exchanger, capillary, board-like phase change heat accumulator, unidirectional electrical magnet valve, device for drying and filtering, first stop valve, shower room, second stop valve, external water tank heat exchanger, storage tank.Defrost process is to reclaim the condensation waste heat of heat pump water heater system and the waste water residual heat of shower room through phase change heat accumulator; Through turning to of four-way change-over valve; Change the flow direction of cold-producing medium at board-like phase change heat accumulator and outdoor heat exchanger, realization system energy strorage by using residual heat, release can defrost between function conversion.Though it has increased the method for using the waste water residual heat of condensation waste heat and shower room in defrost process; But it is not fundamentally solving the switching-over problem of cross valve; And it can have influence on the air-conditioning heating in defrost process heating efficiency causes the decline of room temperature.
Summary of the invention
The objective of the invention is to propose a kind of central air-conditioning hot-water heating system that has the phase transformation defroster, can improve defrosting efficiency, and the process that heats of central air-conditioning can not be affected, can improve the comprehensive utilization ratio of the energy simultaneously.
For reaching this purpose, the present invention adopts following technical scheme:
A kind of air-conditioning system with defroster; Said air-conditioning system comprises refrigeration and the heating closed circuit that is connected and composed through pipeline by compressor, cross valve, outdoor heat exchanger, expansion valve and indoor heat exchanger at least; Wherein, Also comprise storage heater, the heat exchanger of the built-in two groups of quantities of heat given up of said storage heater inserts said air-conditioning system pipeline through pipeline respectively; Wherein between compressor inlet and the cross valve, the first heat exchanger import access point is between indoor heat exchanger and expansion valve in said air-conditioning system for the first heat exchanger exit access point; The said second heat exchanger exit access point is between cross valve and outdoor heat exchanger, and the second heat exchanger import access point is between indoor heat exchanger and expansion valve; On the access pipeline of first heat exchanger and second heat exchanger, be connected in series control valve one and control valve two respectively, and serial connection control valve three in the air-conditioning circulation line between indoor heat exchanger and expansion valve, be installed between the import access point of two heat exchangers; The 3rd heat exchanger that is used to the storage heater accumulation of heat also is installed in the said storage heater; Said the 3rd heat exchanger exit access point is between indoor heat exchanger and expansion valve; Its import incoming end is connected in series control valve four on the access pipeline of said the 3rd heat exchanger between compressor outlet and indoor heat exchanger.
As above-mentioned a kind of preferred version with air-conditioning system of defroster, said control valve one, control valve two, control valve three and control valve four are magnetic valve.
A kind of central air-conditioning hot-water heating system; It comprises above-described air-conditioning system with defroster; Wherein, this hot-water heating system also comprises apparatus for heating water by solar energy, and said apparatus for heating water by solar energy absorbs solar energy and converts the heat energy in the water tank to through solar heat-collection plate.
A kind of preferred version as above-mentioned central air-conditioning hot-water heating system; Also comprise water fluorine heat exchange unit; Said water fluorine heat exchange unit; Said water fluorine heat exchange unit heat input inserts compressor outlet and indoor heat exchanger outlet, and its heat output loop is parallelly connected with the heat output loop of said apparatus for heating water by solar energy.
As a kind of preferred version of above-mentioned central air-conditioning hot-water heating system, said heat output loop connects floor heating coil pipe and/or clothes drying device.
As a kind of preferred version of above-mentioned central air-conditioning hot-water heating system, the heat collection water tank of said apparatus for heating water by solar energy connects domestic water system, is used to provide domestic water.
As a kind of preferred version of above-mentioned central air-conditioning hot-water heating system, said solar water heater and/or floor heating device are communicated with the 3rd heat exchanger of said storage heater through pipeline, be used to said storage heater heat is provided.
As a kind of preferred version of above-mentioned central air-conditioning hot-water heating system, said storage heater is a phase change heat accumulator, and the phase-change material in the said phase change heat accumulator is organic material and/or inorganic material.
As a kind of preferred version of above-mentioned central air-conditioning hot-water heating system, the refrigerant that air-conditioning system adopted is R22 or R410A.
A kind of preferred version as above-mentioned central air-conditioning hot-water heating system; Said air-conditioning system also has the oil eliminator that is arranged between said compressor outlet and the cross valve; Gas-liquid separator between suction port of compressor and the cross valve, and be arranged on the reservoir between indoor heat exchanger and the expansion valve.
Beneficial effect of the present invention is: the present invention, heats at air-conditioning and utilizes the unnecessary heat of compressor air-discharging that storage heater is carried out accumulation of heat in the process through on the basis of existing air-conditioning system, having increased storage heater through a kind of central air-conditioning hot-water heating system that has the air-conditioning system of defroster and have this air-conditioning system is provided; Through control, realized utilizing the heat in the storage heater that outdoor heat exchanger is defrosted again, realized the utilization maximization of resource control valve; And in defrost process, do not need indoor set to shut down on the one hand, can realize indoor uninterrupted heating; Neither need the compressor start and stop to accomplish system's high-low pressure butt joint on the other hand, also do not need cross valve frequently to commutate, eliminated because noise that the cross valve switching-over causes and " oil of running quickly " phenomenon; Prolonged the service life of compressor and cross valve; And after using phase change heat accumulator to carry out the hydrothermal solution accumulation of heat,, improved defrosting speed greatly as low-temperature heat source; Reduce the defrosting energy consumption, improved the reliability of defrosting.
Description of drawings
Fig. 1 is the structural representation of the air-conditioning system with defroster that provides of the specific embodiment of the invention;
Fig. 2 is the structural representation of the central air-conditioning hot-water heating system that provides of the specific embodiment of the invention.
Wherein:
1: compressor; 2: cross valve; 3: outdoor heat exchanger; 4: reservoir; 5: indoor heat exchanger; 6: oil eliminator; 7: gas-liquid separator; 8: storage heater; 9: the first heat exchangers; 10: control valve one; 11: the second heat exchangers; 12: control valve two; 13: the second heat exchangers; 14: control valve three; 15: solar panel; 16: solar heat exchanger; 17: water tank; 18: the domestic water place; 19: clothes drying device; 20: the floor heating coil pipe; 21: water fluorine heat exchange unit; 22: expansion valve; 23: control valve four.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and through the specific embodiment.
As shown in Figure 1; A kind of air-conditioning system with defroster; It comprises storage heater 8, and the heat exchanger of these storage heater 8 built-in two groups of quantities of heat given up inserts the air-conditioning system pipeline through pipeline respectively; Wherein between compressor 1 import and the cross valve 2, first heat exchanger, 9 import access points are between indoor set 5 and expansion valve 22 in air-conditioning system for first heat exchanger 9 outlet access points; Second heat exchanger, 11 outlet access points are between cross valve 2 and outdoor heat exchanger 3, and second heat exchanger, 11 import access points are between indoor heat exchanger 5 and expansion valve 22; On the access pipeline of first heat exchanger 9 and second heat exchanger 11, be connected in series control valve 1 and control valve 2 12 respectively; And serial connection control valve 3 14 in the air-conditioning circulation line between indoor heat exchanger 5 and expansion valve 22; It is installed between the import access point of two heat exchangers; Above-mentioned storage heater 8 also is equipped with the 3rd heat exchanger 13 that is used to the storage heater accumulation of heat; The outlet access point of the 3rd heat exchanger 13 is between indoor heat exchanger 5 and expansion valve 22, and its import incoming end is between compressor 1 outlet and indoor heat exchanger 5, and the above-mentioned control valve of serial connection control valve 4 23 1, control valve 2 12, control valve 3 14 and control valve 23 are magnetic valve on the access pipeline of the 3rd heat exchanger 13.
In the normal process of refrigerastion of air-conditioning, control valve 3 14 is opened, and control valve 1 is closed with control valve 2 12; Air-conditioning heats in the process, and control valve 3 14 is opened, and control valve 1 is closed with control valve 12, can optionally open control valve 4 23, if control valve 4 23 is opened, the cold-producing medium that goes out compressor 1 passes through and also is storage heater 8 accumulation of heats when heating circulation; When the outdoor heat exchanger of air-conditioning system produces long-pending frost; Can open with control valve 2 12 through control control valve 1; Control valve 3 14 is closed, and through changing the circulating direction of cold-producing medium, makes cold-producing medium after indoor heat exchanger 5 heat releases; Get into second heat exchanger 11 and absorb the heat in the storage heater through control valve 2 12; Inlet chamber external heat exchanger 3 carries out heat release it is defrosted then, at last through control valve 1 heat of first heat exchanger 9 in inferior absorption storage heater 8 of flowing through, can make that the cold-producing medium after the heat release is heated in outdoor heat exchanger 3.
What in this embodiment, adopt in the storage heater 8 is the phase-transition heat-storage medium, and what wherein the phase-transition heat-storage medium adopted is organic material and/or inorganic material, also can adopt other heat storage mediums in the storage heater 8 certainly.
Above-mentioned air-conditioning system comprise at least by gas-liquid separator 7, compressor 2, oil eliminator 6, cross valve 2, indoor heat exchanger 5, reservoir 4, electric expansion valve 22 and outdoor heat exchanger 3 through pipeline connect and compose the refrigeration and the heating closed circuit; Wherein indoor heat exchanger 5 is made up of the indoor terminal machine of some groups of parallel connections; Each indoor terminal machine comprises the heat exchanger coils and the electric expansion valve of mutual series connection, and the refrigerant that is adopted in the air-conditioning system is R22 or R410A.
As shown in Figure 2; A kind of central air-conditioning hot-water heating system that it provides for the application with above-mentioned air-conditioning system; Comprise air-conditioning system, this air-conditioning system comprises refrigeration and the heating closed circuit that is connected and composed by gas-liquid separator 7, compressor 2, oil eliminator 6, cross valve 2, indoor heat exchanger 5, reservoir 4, electric expansion valve 22 and outdoor heat exchanger 3 at least; Wherein, cross valve 2 comprises first valve port (a), second valve port (b), the 3rd valve port (c) and the 4th valve port (d), and wherein, first valve port is communicated with oil eliminator 6 through pipeline; Second valve port is communicated with gas-liquid separator 7 through pipeline; The 3rd valve port is communicated with outdoor heat exchanger 3 through pipeline; The 4th valve port is communicated with indoor heat exchanger 5 through pipeline.
Above-mentioned central air-conditioning hot-water heating system also comprises storage heater 8; The heat exchanger of these storage heater 8 built-in two groups of quantities of heat given up; Insert the air-conditioning system pipeline through pipeline respectively; Wherein between compressor 1 import and the cross valve 2, first heat exchanger, 9 import access points are between indoor set heat exchanger 5 and expansion valve 22 in said air-conditioning system for first heat exchanger 9 outlet access points; Said second heat exchanger, 11 outlet access points are between cross valve 2 and outdoor heat exchanger 3; Second heat exchanger, 11 import access points are between indoor heat exchanger 5 and expansion valve 22; The import access point of first heat exchanger 9 near the import access point of indoor heat exchanger 5, the second heat exchangers near expansion valve 22; On the access pipeline of first heat exchanger 9 and second heat exchanger 11, be connected in series control valve 1 and control valve 2 12 respectively; And serial connection control valve 3 14 in the air-conditioning circulation line between indoor heat exchanger 5 and expansion valve 22, be installed between the import access point of two heat exchangers; Above-mentioned storage heater 8 also is equipped with the 3rd heat exchanger 13 that is used to the storage heater accumulation of heat; The outlet access point of the 3rd heat exchanger 13 is between indoor heat exchanger 5 and expansion valve 22; Its import incoming end is connected in series control valve 4 23 on the access pipeline of the 3rd heat exchanger 13 between compressor 1 outlet and indoor heat exchanger 5.
Above-mentioned hot-water heating system also comprises apparatus for heating water by solar energy; This apparatus for heating water by solar energy absorbs solar energy and is converted into the heat energy in the heat collection water tank 17 through solar heat-collection plate 15; Apparatus for heating water by solar energy comprises solar heat-collection plate 15, solar heat-exchange station 16 and water tank 17; Solar heat-collection plate 15 carries out exchange heat through heat conduction pipeline and solar heat-exchange station 16 with water tank 17, and above-mentioned heat conduction pipeline comprises heat efferent duct and return duct, and an end of this heat efferent duct and return duct all is communicated with solar heat-collection plate 15; Their other end all passes solar heat-exchange station 16, and is communicated with coil pipes in being arranged on water tank 17.
The central air-conditioning hot-water heating system also comprises water fluorine heat exchange unit 21; The input of this water fluorine heat exchange unit 21 inserts the outlet and indoor heat exchanger 5 outlets of compressor 1; To be its input be connected with pipeline between oil eliminator 6 and the cross valve 2 for water fluorine heat exchange unit 21 and the concrete connected mode of air-conditioning system among the present invention; Its pipeline connection between end and indoor set 5 and the reservoir 4 that refluxes; Water fluorine heat exchange unit 21 heat output loops are parallelly connected with the heat output loop of apparatus for heating water by solar energy, and above-mentioned heat output loop connects floor heating coil pipe 20 and/or clothes drying device 19; The heat collection water tank 17 of apparatus for heating water by solar energy connects domestic water place 17, is used to provide domestic water.
Among the application in the air conditioning and water heating system except utilizing compressor heat to be provided for storage heater 8; Can also be through solar water heater and/or floor heating device be communicated with the 3rd heat exchanger 13 of storage heater through pipeline; For storage heater 8 provides heat; Also can utilize simultaneously the waste heat of domestic water place 18 and clothes drying device 19 heat to be provided, can further improve the heat storage efficiency of storage heater thus, and can improve rate of energy for storage heater 8.
The application is through adopting storage heater as defroster in air-conditioning system; Though increased phase change heat accumulator; But its utilization is the unnecessary heat of compressor air-discharging, and the normal refrigeration of air-conditioning or the process that heats are not influenced, and the refrigerating/heating of air-conditioning comprises following process among the application:
When refrigerating state, control valve 3 14 to be opened, control valve 1 is closed with control valve 2 12; The high-temperature high-pressure gas refrigerant that goes out compressor 1 is flowed through behind oil eliminator 6, the cross valve 2 successively; Inlet chamber external heat exchanger 3 is condensed into high-pressure sub-cooled liquid, pass through throttling and reservoir 4 again after, get into indoor heat exchanger 5 and carry out heat exchange; This moment, cold-producing medium became low-temp low-pressure gas entering gas-liquid separator 6, finally imported compressor 1;
When heating state, control valve 3 14 and control valve 4 23 to be opened, control valve 1 is closed with control valve 2 12; Go out the high-temperature high-pressure gas refrigerant of compressor 1, a part gets into storage heater 8 and carries out accumulation of heat through control valve 4 23; After another part then passes through cross valve 2, get into indoor heat exchanger 5 and carry out condensation, pass through throttling and reservoir 4 again after; Inlet chamber external heat exchanger 3 carries out heat exchange, and this moment, cold-producing medium became low-temp low-pressure gas entering gas-liquid separator 7, finally imported compressor 1; Certainly in the process of heating, also can not open control valve 4 23, storage heater 8 not carried out accumulation of heat.
In this embodiment, a kind of Defrost method with air-conditioning system of defroster may further comprise the steps:
Steps A: the accumulation of heat of storage heater; Under the state of heating, control valve 3 14 and control valve 4 23 to be opened, control valve 1 is closed with control valve 2 12; Go out the gas of the HTHP of compressor; A part is through heating circulation, and another part gets into storage heater storage heater is carried out accumulation of heat through control valve 23.
Step B: the defrost process of central air-conditioning, when the outdoor heat exchanger of air conditioner generation was amassed frost in a large number, central air-conditioning carried out following steps outdoor heat exchanger of air conditioner is defrosted;
Step a: control valve one and control valve two are opened, and other control valve is closed;
Step b: the high-temperature high-pressure refrigerant gas that goes out compressor is flowed through behind oil eliminator, the cross valve successively, gets into indoor heat exchanger and carries out the condensation heat release, after cold-producing medium becomes about 50 ℃, gets into reservoir;
Step c: the cold-producing medium of accomplishing indoor heat release absorbs the heat that storage heater stores after control valve two gets into phase change heat accumulator;
Steps d: cold-producing medium absorbs after the heat of storage heater storage, and cold-producing medium defrosts to outdoor heat exchanger through the outflow end inlet chamber external heat exchanger heat radiation of second heat exchanger;
Step e: after outdoor heat exchanger defrosted, cold-producing medium through outdoor heat exchanger and electric expansion valve after, get into storage heater through control valve one, get back to compressor after getting into gas-liquid separator through the cold-producing medium outflow end of first heat exchanger at last.
More than combine specific embodiment to describe know-why of the present invention.These are described just in order to explain principle of the present invention, and can not be interpreted as the restriction to protection domain of the present invention by any way.Based on the explanation here, those skilled in the art need not pay performing creative labour can associate other specific embodiment of the present invention, and these modes all will fall within protection scope of the present invention.

Claims (10)

1. air-conditioning system with defroster; Said air-conditioning system comprises refrigeration and the heating closed circuit that is connected and composed through pipeline by compressor, cross valve, outdoor heat exchanger, expansion valve and indoor heat exchanger at least; It is characterized in that; Also comprise storage heater, the heat exchanger of the built-in two groups of quantities of heat given up of said storage heater inserts said air-conditioning system pipeline through pipeline respectively; Wherein between compressor inlet and the cross valve, the first heat exchanger import access point is between indoor heat exchanger and expansion valve in said air-conditioning system for the first heat exchanger exit access point; The said second heat exchanger exit access point is between cross valve and outdoor heat exchanger, and the second heat exchanger import access point is between indoor heat exchanger and expansion valve; On the access pipeline of first heat exchanger and second heat exchanger, be connected in series control valve one and control valve two respectively, and serial connection control valve three in the air-conditioning circulation line between indoor heat exchanger and expansion valve, be installed between the import access point of two heat exchangers; The 3rd heat exchanger that is used to the storage heater accumulation of heat also is installed in the said storage heater; Said the 3rd heat exchanger exit access point is between indoor heat exchanger and expansion valve; Its import incoming end is connected in series control valve four on the access pipeline of said the 3rd heat exchanger between compressor outlet and indoor heat exchanger.
2. the air-conditioning system with defroster according to claim 1 is characterized in that, said control valve one, control valve two, control valve three and control valve four are magnetic valve.
3. central air-conditioning hot-water heating system; Comprise the described air-conditioning system of claim 1 with defroster; It is characterized in that said hot-water heating system also comprises apparatus for heating water by solar energy, said apparatus for heating water by solar energy absorbs solar energy and converts the heat energy in the water tank to through solar heat-collection plate.
4. central air-conditioning hot-water heating system according to claim 3; It is characterized in that; Also comprise water fluorine heat exchange unit; Said water fluorine heat exchange unit, said water fluorine heat exchange unit heat input insert compressor outlet and indoor heat exchanger outlet, and its heat output loop is parallelly connected with the heat output loop of said apparatus for heating water by solar energy.
5. central air-conditioning hot-water heating system according to claim 4 is characterized in that, said heat output loop connects floor heating coil pipe and/or clothes drying device.
6. central air-conditioning hot-water heating system according to claim 4 is characterized in that, the heat collection water tank of said apparatus for heating water by solar energy connects domestic water system, is used to provide domestic water.
7. according to the central air-conditioning hot-water heating system described in the claim 6, it is characterized in that said solar water heater and/or floor heating device are communicated with the 3rd heat exchanger of said storage heater through pipeline, be used to said storage heater heat is provided.
8. central air-conditioning hot-water heating system according to claim 7 is characterized in that, said storage heater is a phase change heat accumulator, and the phase-change material in the said phase change heat accumulator is organic material and/or inorganic material.
9. central air-conditioning hot-water heating system according to claim 7 is characterized in that the refrigerant that air-conditioning system adopted is R22 or R410A.
10. central air-conditioning hot-water heating system according to claim 7; It is characterized in that; Said air-conditioning system also has the oil eliminator that is arranged between said compressor outlet and the cross valve; Gas-liquid separator between suction port of compressor and the cross valve, and be arranged on the reservoir between indoor heat exchanger and the expansion valve.
CN201210361903.3A 2012-09-21 2012-09-21 Air conditioning system with defroster and central air conditioning hot water system Expired - Fee Related CN102829589B (en)

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WO2016086564A1 (en) * 2014-12-01 2016-06-09 常州海卡太阳能热泵有限公司 Solar heat pump heating system with self-driving separated heat pipe energy storage device, and control method therefor
CN106225290A (en) * 2016-07-15 2016-12-14 珠海格力电器股份有限公司 Air-conditioning and control method thereof
CN106288562A (en) * 2016-08-16 2017-01-04 东北电力大学 The defrosting of a kind of air source heat pump system controls devices and methods therefor
CN106288484A (en) * 2016-08-16 2017-01-04 东北电力大学 A kind of air source heat pump system and defrosting control method thereof
CN106839498A (en) * 2017-02-10 2017-06-13 美的集团股份有限公司 Heat pump air conditioner and its control method
CN108224840A (en) * 2018-01-25 2018-06-29 珠海格力电器股份有限公司 A kind of heat pump air conditioning system and control method
CN110762791A (en) * 2019-10-18 2020-02-07 Tcl空调器(中山)有限公司 Air conditioner outlet air temperature control method and system and storage medium
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