CN203857622U - Air conditioning system provided with compressor and waste heat recovery and defrosting device - Google Patents
Air conditioning system provided with compressor and waste heat recovery and defrosting device Download PDFInfo
- Publication number
- CN203857622U CN203857622U CN201420068179.XU CN201420068179U CN203857622U CN 203857622 U CN203857622 U CN 203857622U CN 201420068179 U CN201420068179 U CN 201420068179U CN 203857622 U CN203857622 U CN 203857622U
- Authority
- CN
- China
- Prior art keywords
- heat
- compressor
- heat pipe
- conditioning system
- recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 39
- 238000011084 recovery Methods 0.000 title claims abstract description 33
- 239000002918 waste heat Substances 0.000 title claims abstract description 26
- 238000010257 thawing Methods 0.000 title abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 210000001736 Capillaries Anatomy 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010808 liquid waste Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000002441 reversible Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
-
- 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]
- Y02B30/56—Heat recovery units
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses an air conditioning system provided with a compressor and a waste heat recovery and defrosting device for solving the problems of poor defrosting effect of the existing air conditioning system and the like. The air conditioning system provided with the compressor and the waste heat recovery and defrosting device comprises the compressor, an outdoor heat exchanger and the waste heat recovery and defrosting device, wherein the waste heat recovery and defrosting device comprises at least one heat pipe and a shell covering at least one part of the compressor, and the heat pipe is used for transmitting the heat radiated by the compressor to the outdoor heat exchanger to defrost. The air conditioning system has the advantages of high waste heat utilization rate of the compressor, no need of an assistant defrosting measure, capability of defrosting through utilizing the waste heat radiated by the compressor only, good defrosting effect, energy conservation and environmental friendliness.
Description
Technical field
The utility model relates to a kind of air-conditioning system with heat of compressor recovery defroster.
Background technology
Air-conditioning is in the time heating, working medium evaporation endothermic reduces outdoor heat exchanger surface temperature in outdoor heat exchanger, and when outdoor environment is during lower than 5 DEG C, outdoor heat exchanger surface temperature is probably lower than 0 DEG C, can produce frost on outdoor heat exchanger surface, have a strong impact on air-conditioning heating performance.
Existing Defrost method has two kinds, one is hot gas bypass defrosting, the high temperature and high pressure gas part that compressor is discharged passes into outdoor heat exchanger and defrosts, another kind is cross valve reverse cycle defrost, in the time that needs defrost, cross valve is commutated, be changed to refrigerating state from heating state, outdoor heat exchanger converts condenser to and defrosts.Front a kind of mode need to be shunted the part heat in compressor air-discharging, affect the heating performance of air-conditioning, and defrosting time is long, and defrosting effect is poor; Rear a kind of mode is suspended to indoor heating completely during defrosting, and also need to, from indoor absorption heat for defrosting, have a strong impact on indoor comfort level.
Utility model content
The purpose of this utility model is to propose the air-conditioning system that has heat of compressor and reclaim defroster that high, the energy-conserving and environment-protective of a kind of heat of compressor utilization rate, defrosting effect are good.
For reaching this object, the utility model by the following technical solutions:
Have heat of compressor and reclaim the air-conditioning system of defroster, comprise compressor and outdoor heat exchanger, also comprise waste heat recovery defroster, described waste heat recovery defroster comprises at least one heat pipe and wraps up the shell of described compressor at least a portion,
Described heat pipe transfers to outdoor heat exchanger for the heat that described compressor is distributed and defrosts.
Preferably, described heat pipe comprises the heat pipe evaporator section that is connected with described shell, is arranged at the heat pipe condenser section in described outdoor heat exchanger and connects the heat pipe adiabatic section of heat pipe evaporator section and heat pipe condenser section, has waste heat recovery working medium in described heat pipe.
Preferably, described shell is Heat Conduction Material, described heat pipe evaporator section be arranged in described shell or be arranged at described shell outside or
Described shell is insulation material, and described heat pipe evaporator section is arranged between described shell and described compressor.
Preferably, described waste heat recovery defroster has many heat pipes, and multiple heat pipe evaporator sections of described many heat pipes are along the circumferential direction distributed in the periphery of described compressor.
Preferably, described heat pipe condenser section is parallel with the heat-transfer pipe of described outdoor heat exchanger;
Described heat pipe condenser section is with fin, and the fin of described heat pipe condenser section and the fin of described outdoor heat exchanger are coupled.
Preferably, a side of described outdoor heat exchanger is provided with aerofoil fan, and described aerofoil fan and described heat pipe condenser section lay respectively at the both sides of the heat-transfer pipe of described outdoor heat exchanger.
Preferably, have the compressor of multiple parallel connections in described refrigerating/heating closed circuit, the outside of each compressor is provided with shell and heat pipe evaporator section.
Preferably, described shell is hollow cylindrical aluminium cover.
Preferably, the outside of described heat pipe adiabatic section is enclosed with heat-insulation layer.
Preferably, the inwall of described heat pipe is filled with capillary wick;
Preferably, the material of described capillary wick is silk screen, sintering metal and/or foam metal.
The beneficial effects of the utility model are:
(1) the utlity model has the shell that the waste heat recovery defroster of air-conditioning system that heat of compressor reclaims defroster comprises at least one heat pipe and parcel compressor at least a portion, the heat that heat pipe distributes compressor transfers to outdoor heat exchanger and defrosts, shell can play to compressor the effect of insulation or heat conduction, make heat pipe can absorb most of heat that compressor distributes, utilization rate of waste heat is high, without adopting auxiliary defrosting measure, only utilize the waste heat that compressor distributes to defrost, defrosting effect is good, energy-conserving and environment-protective;
(2) heat pipe and shell laminating or close setting, and at the outside of heat pipe adiabatic section parcel heat-insulation layer, further improved the utilization rate of heat of compressor, thermal loss is little, reaches good defrosting effect.
Brief description of the drawings
Fig. 1 is the structural representation of air-conditioning system that has heat of compressor and reclaim defroster that the utility model embodiment mono-provides;
Fig. 2 is air-conditioning compressor, shell and the heat pipe evaporator section assembly structure schematic diagram with heat of compressor recovery defroster that the utility model embodiment mono-provides;
Fig. 3 is the structural representation of air-conditioning system heat pipe that has heat of compressor and reclaim defroster that the utility model embodiment mono-provides;
Fig. 4 be the utility model embodiment mono-provide there is heat of compressor and reclaim the air-conditioning system of defroster and carry out heat pipe Defrost operation time working medium flow to schematic diagram;
The comparison diagram of the tephigram that Fig. 5 is having of providing of the utility model embodiment mono-air-conditioning system when operation that heat of compressor reclaims defroster when not having the air-conditioning system operation that heat of compressor reclaims defroster;
Fig. 6 be the utility model embodiment mono-provide there is heat of compressor and reclaim the air-conditioning system of defroster and normally freeze time working medium flow to schematic diagram.
In figure, 1, compressor; 2, oil eliminator; 3, the first check valve; 4, four-way change-over valve; 5, outdoor heat exchanger; 6, outdoor electric expansion valve; 7, the second check valve; 8, high-pressure reservoir; 9, liquid pipe stop valve; 10, indoor electronic expansion valve; 11, indoor heat exchanger; 12, tracheae stop valve; 13, gas-liquid separator; 14, heat pipe; 141, heat pipe evaporator section; 142, heat pipe adiabatic section; 143, heat pipe condenser section; 144, capillary heat exchanger core; 15, shell; 16, aerofoil fan.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by detailed description of the invention.
Embodiment mono-:
Fig. 1 to 3 is structural representations of the air-conditioning system with heat of compressor retracting device that provides of the present embodiment.As shown in the figure, this air-conditioning system comprises the refrigerating/heating closed circuit and the waste heat recovery defroster that are connected and composed by pipeline by gas-liquid separator 13, compressor 1, oil eliminator 2, four-way change-over valve 4, outdoor heat exchanger 5, outdoor electric expansion valve 6, high-pressure reservoir 8, indoor electronic expansion valve 10 and indoor heat exchanger 11.Between high-pressure reservoir 8 and indoor electronic expansion valve 10, be provided with tracheae stop valve 12, between four-way change-over valve 4 and indoor heat exchanger 11, be provided with liquid pipe stop valve 9.Between oil eliminator 2 and four wind reversal valves 4, be provided with the first check valve, outdoor electric expansion valve 6 is parallel with the second check valve 7.
Heat of compressor retracting device comprises five heat pipes 14 and is placed on the shell 15 of parcel compressor 1 at least a portion in compressor 1 outside.As shown in Figure 3, each root heat pipe 14 includes the heat pipe evaporator section 141 that is connected with shell 15, is arranged at the heat pipe condenser section 143 in outdoor heat exchanger 5 and connects the heat pipe adiabatic section 142 of heat pipe evaporator section 141 and heat pipe condenser section 143.As shown in Figure 2, the heat pipe evaporator section 141 of five heat pipes 14 is all arranged in shell 15 and is along the circumferential direction distributed in the periphery of compressor 1.Shell 15 is Heat Conduction Material, in the present embodiment, adopts hollow cylindrical aluminium cover, good heat conduction effect.Heat pipe condenser section 143 is parallel with the heat-transfer pipe of outdoor heat exchanger 5, and heat pipe condenser section 143 is with fin, and the fin of its fin and outdoor heat exchanger 5 is coupled.For reducing scattering and disappearing of heat, be enclosed with heat-insulation layer in the outside of heat pipe adiabatic section 142.The inwall of heat pipe 14 is filled with capillary wick 144, and its material can be silk screen, sintering metal and/or foam metal.In heat pipe 14, there is waste heat recovery working medium.
One side of outdoor heat exchanger 5 is provided with aerofoil fan 16, and aerofoil fan 16 and heat pipe condenser section 143 lay respectively at the both sides of the heat-transfer pipe of outdoor heat exchanger 5.
This air-conditioning system can be carried out normal heating operation, normal refrigerating operaton and three kinds of operational modes of heat pipe Defrost operation.When normal heating operation, four-way change-over valve 4 powers on, outdoor electric expansion valve 6 runs well, indoor electronic expansion valve 10 standard-sized sheets, aerofoil fan 16 forward rotation, the flow direction of heat-exchange working medium is the outdoor electric expansion valve 6-of compressor 1-oil eliminator 2-the first check valve 3-four-way change-over valve 4-tracheae stop valve 12-indoor heat exchanger 11-indoor electronic expansion valve 10-liquid pipe stop valve 9-high-pressure reservoir 8-outdoor heat exchanger 5-gas-liquid separator 13-compressor 1.
As shown in Figure 4, in the time detecting that outdoor heat exchanger 5 need to defrost, enter heat pipe Defrost operation, liquid waste heat recovery working medium absorbs at heat pipe evaporator section 141 heat of vaporization that compressor 1 distributes and becomes gaseous state, thereby mineralization pressure is poor between heat pipe evaporator section 141 and heat pipe condenser section 143, the waste heat recovery working medium of gaseous state becomes liquid state through heat pipe adiabatic section 142 to heat pipe condenser section 143 heat release in the effect current downflow of pressure differential, liquid waste heat recovery working medium is at the dirty product heat cal rod evaporator section 141 of driving of capillary force, and so forth, the waste heat that compressor 1 is distributed offers outdoor heat exchanger 5 continuously.Its heat-exchange working medium is identical while flowing to normal heating operation, difference is, aerofoil fan 16 carries out antiport, outdoor air is first absorbed heat by heat pipe condenser section 143, outdoor air after heating flows through outdoor heat exchanger 5 again, so, the air of heat can be removed the frost that outdoor heat exchanger 5 is tied.
As shown in Figure 6, when normal refrigerating operaton, four-way change-over valve 4 does not power on, outdoor electric expansion valve 6 standard-sized sheets, indoor electronic expansion valve 10 runs well, and the flow direction of heat-exchange working medium is compressor 1-oil eliminator 2-first check valve 3-four-way change-over valve 4-outdoor heat exchanger 5-the second check valve 7-high-pressure reservoir 8-liquid pipe stop valve 9-indoor electronic expansion valve 10-indoor heat exchanger 11-tracheae stop valve 12-gas-liquid separator 13-compressor 1.When refrigeration, outdoor heat exchanger 5 mean temperatures are 50 DEG C of left and right, little a lot of during compared with winter with the compressor 1 shell temperature difference, heat pipe 14 two ends have a narrow range of temperature, heat pipe heat transmits little, has reduced the impact on outdoor heat exchanger 5 degree of supercoolings, dropping to minimum on the impact of refrigeration performance.
Fig. 5 is the comparison diagram of the tephigram of the present embodiment when having air-conditioning system when operation that heat of compressor reclaims defroster and not having the air-conditioning system operation that heat of compressor reclaims defroster.The position of a, a ' wherein, b, b ', c, d, d ' representative as shown in Figure 4.Pk is condensing pressure, P0 ' is the evaporating pressure under heat pipe 14 effects, P0 is without the evaporating pressure under heat pipe effect, a point compressor 1 sucks the gaseous refrigerant of saturation state from outdoor heat exchanger 5 heat exchange, compressor 1 compression exhaust is to state b point, cold-producing medium becomes and has the state point of certain degree of supercooling c through indoor heat exchanger 11, the cold-producing medium of supercooled state becomes two-phase state through outdoor electric expansion valve 6 reducing pressure by regulating flows, in outdoor heat exchanger 5, heat absorption becomes compressor 1 suction condition point d, a-b-c-d-a is the tephigram while not being with heat pipe heating operation, a '-b '-c-d '-a ' is the tephigram during with heat pipe 14 heating operation, in figure, can find out at degree of supercooling and condensing pressure constant in the situation that, the heat that heat pipe 14 is delivered to outdoor heat exchanger 5 can make evaporating pressure become P0 ' from P0, reduce compressor 1 power Δ ω, effectively improve the stability that heats of air-conditioning.
The waste heat recovery defroster that the present embodiment has the air-conditioning system of heat of compressor recovery defroster comprises heat pipe and is placed on the shell in compressor outside, the heat that heat pipe distributes compressor transfers to outdoor heat exchanger and defrosts, shell can play to compressor the effect of insulation or heat conduction, make heat pipe can absorb most of heat that compressor distributes, utilization rate of waste heat is high, without adopting auxiliary defrosting measure, only utilize the waste heat that compressor distributes to defrost, defrosting effect is good, energy-conserving and environment-protective.
In order to improve Performance for Air Conditioning Systems, the compressor of multiple parallel connections can be set, each compressor outside all arranges shell and heat pipe evaporator section.Heat pipe evaporator section is not limited to and is located in shell, also can be arranged on the outside of shell, or shell employing insulation material, and heat pipe evaporator section is arranged between shell and compressor, can try one's best and absorb greatly the waste heat that compressor distributes.The quantity of heat pipe is not limited to five, can be according to real needs setting.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present utility model, within these modes all will fall into protection domain of the present utility model.
Claims (10)
1. one kind has the air-conditioning system of heat of compressor recovery defroster, comprise compressor (1) and outdoor heat exchanger (5), it is characterized in that: also comprise waste heat recovery defroster, described waste heat recovery defroster comprises at least one heat pipe (14) and wraps up the shell (15) of described compressor (1) at least a portion
Described heat pipe (14) transfers to outdoor heat exchanger (5) for the heat that described compressor (1) is distributed and defrosts.
2. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 1, it is characterized in that: described heat pipe (14) comprises the heat pipe evaporator section (141) that is connected with described shell (15), be arranged at the heat pipe condenser section (143) in described outdoor heat exchanger (5) and connect the heat pipe adiabatic section (142) of heat pipe evaporator section (141) and heat pipe condenser section (143), and described heat pipe has waste heat recovery working medium in (14).
3. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 2, it is characterized in that: described shell (15) is Heat Conduction Material, described heat pipe evaporator section (141) be arranged in described shell (15) or be arranged at described shell (15) outside or
Described shell (15) is insulation material, and described heat pipe evaporator section (141) is arranged between described shell (15) and described compressor (1).
4. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 3, it is characterized in that: described waste heat recovery defroster has many heat pipes (14), multiple heat pipe evaporator sections (141) of described many heat pipes (14) are along the circumferential direction distributed in the periphery of described compressor (1).
5. according to a kind of air-conditioning system with heat of compressor recovery defroster described in claim 2 to 4 any one, it is characterized in that: described heat pipe condenser section (143) is parallel with the heat-transfer pipe of described outdoor heat exchanger (5);
Described heat pipe condenser section (143) is with fin, and the fin of the fin of described heat pipe condenser section (143) and described outdoor heat exchanger (5) is coupled.
6. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 5, it is characterized in that: a side of described outdoor heat exchanger (5) is provided with aerofoil fan (16), described aerofoil fan (16) and described heat pipe condenser section (143) lay respectively at the both sides of the heat-transfer pipe of described outdoor heat exchanger (5).
7. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 2, it is characterized in that: in the refrigerating/heating closed circuit of described air-conditioning system, have the compressor (1) of multiple parallel connections, the outside of each compressor (1) is provided with shell (15) and heat pipe evaporator section (141).
8. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 7, is characterized in that: described shell (15) is hollow cylindrical aluminium cover.
9. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 2, is characterized in that: the outside of described heat pipe adiabatic section (142) is enclosed with heat-insulation layer.
10. a kind of air-conditioning system with heat of compressor recovery defroster according to claim 1, is characterized in that: the inwall of described heat pipe (14) is filled with capillary wick (144).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068179.XU CN203857622U (en) | 2014-02-17 | 2014-02-17 | Air conditioning system provided with compressor and waste heat recovery and defrosting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068179.XU CN203857622U (en) | 2014-02-17 | 2014-02-17 | Air conditioning system provided with compressor and waste heat recovery and defrosting device |
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| Publication Number | Publication Date |
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| CN203857622U true CN203857622U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420068179.XU Active CN203857622U (en) | 2014-02-17 | 2014-02-17 | Air conditioning system provided with compressor and waste heat recovery and defrosting device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617560A (en) * | 2019-09-10 | 2019-12-27 | 成都仙德科技有限公司 | Portable sound energy air conditioner waste heat recycling method |
| CN110671780A (en) * | 2019-10-24 | 2020-01-10 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
| CN110836452A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN111686558A (en) * | 2019-03-12 | 2020-09-22 | 阿特拉斯·科普柯空气动力股份有限公司 | Compressor installation and method for supplying compressed gas |
| CN112682907A (en) * | 2020-12-14 | 2021-04-20 | 珠海格力电器股份有限公司 | Air conditioner, heat pipe defrosting control method, computer equipment, medium and terminal |
-
2014
- 2014-02-17 CN CN201420068179.XU patent/CN203857622U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836452A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN111686558A (en) * | 2019-03-12 | 2020-09-22 | 阿特拉斯·科普柯空气动力股份有限公司 | Compressor installation and method for supplying compressed gas |
| CN110617560A (en) * | 2019-09-10 | 2019-12-27 | 成都仙德科技有限公司 | Portable sound energy air conditioner waste heat recycling method |
| CN110671780A (en) * | 2019-10-24 | 2020-01-10 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
| CN112682907A (en) * | 2020-12-14 | 2021-04-20 | 珠海格力电器股份有限公司 | Air conditioner, heat pipe defrosting control method, computer equipment, medium and terminal |
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