CN203964489U - Air conditioner heat pump system - Google Patents
Air conditioner heat pump system Download PDFInfo
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- CN203964489U CN203964489U CN201420363197.0U CN201420363197U CN203964489U CN 203964489 U CN203964489 U CN 203964489U CN 201420363197 U CN201420363197 U CN 201420363197U CN 203964489 U CN203964489 U CN 203964489U
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- 239000003507 refrigerant Substances 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000010257 thawing Methods 0.000 abstract description 11
- 238000004378 air conditioning Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 29
- 230000004087 circulation Effects 0.000 description 13
- 238000009825 accumulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001839 systemic circulation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model provides an air conditioner heat pump system, include: the heat exchanger comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger and a heat accumulator; the compressor is connected with the outdoor heat exchanger through a reversing valve, and the reversing valve is switched to enable the inlet of the outdoor heat exchanger to be alternately communicated with the air exhaust port and the air suction port of the compressor; the four-way valve comprises a first port, a second port, a third port and a fourth port, the first port is communicated with the exhaust port of the compressor, the second port is communicated with the suction port of the compressor, the third port is communicated with the indoor heat exchanger through a first refrigerant pipeline, and the inlet of the heat accumulator is communicated with the fourth port and the first refrigerant pipeline through a control valve respectively; and outlets of the indoor heat exchanger, the outdoor heat exchanger and the heat accumulator are communicated through a second refrigerant pipeline. According to the air-conditioning heat pump system, the heat accumulator is used as the evaporator to release heat during defrosting, and the problem of poor thermal comfort of the indoor unit during defrosting of the air-conditioning heat pump system is solved.
Description
Technical field
The utility model relates to air-conditioning heat pump field, in particular to a kind of air conditioner heat pump system.
Background technology
Conventional heat pump type air corditioning system is to increase by a cross valve on single cold air conditioning system basis at present, and freezing, heating is to commutate to realize conversion by cross valve.Because unit is at heating operation after a period of time, outdoor heat exchanger surface there will be the situation of frosting, particularly with the reduction of outdoor environment temperature, and the increase of humidity, frosting situation can be more and more serious, directly has influence on heating effect and comfortableness.Conventionally in order to recover the heating effect of unit, unit need to be converted to refrigerating operaton and defrost, and at this moment indoor set cannot heat, and temperature reduces.When the defrosting end transformation of ownership is hot, because indoor set air-out is low, be difficult to reach the effect heating fast in addition.Above-mentioned factor all will badly influence and heat comfortableness effect.
Utility model content
The utility model aims to provide a kind of air conditioner heat pump system, the poor problem of indoor set thermal comfort while defrosting to solve air conditioner heat pump system of the prior art.
The air conditioner heat pump system that the utility model provides, comprising: compressor, indoor heat exchanger, outdoor heat exchanger and storage heater;
Between described compressor and outdoor heat exchanger, by reversal valve, connect, switch reversal valve and make to realize and being alternately communicated with between the exhaust outlet of outdoor heat exchanger entrance and described compressor and air entry;
Cross valve, comprise the first port, the second port, the 3rd port and the 4th port, described the first port is communicated with described exhaust outlet of compressor, described the second port is communicated with described compressor air suction mouth, described the 3rd port is communicated with by the first refrigerant pipeline with indoor heat exchanger, and the entrance of described storage heater is communicated with described the 4th port and the first refrigerant pipeline respectively by control valve;
The outlet of described indoor heat exchanger, outdoor heat exchanger and storage heater is communicated with by the second refrigerant pipeline.
Further, described the 4th port and the first refrigerant pipeline are communicated with the entrance of described storage heater by the first magnetic valve and the second magnetic valve respectively.
Further, described reversal valve is triple valve or cross valve.
Further, also comprise water heater, the refrigerant entrance of described water heater is communicated with described the 4th port and the first refrigerant pipeline respectively by control valve, and the refrigerant exit of described water heater is communicated with described the second refrigerant pipeline.
Further, described the 4th port and the first refrigerant pipeline are communicated with the refrigerant entrance of described water heater by the 4th magnetic valve and the 3rd magnetic valve respectively.
Further, between described the 3rd magnetic valve and the refrigerant entrance of described water heater and between described the 4th port and described the 4th magnetic valve, be in series with respectively check valve, described check valve flows to as the refrigerant entrance towards described water heater.
Further, the quantity of described indoor heat exchanger is a plurality of.
The air conditioner heat pump system that the utility model provides, by storage heater is set, the entrance of described storage heater is communicated with described the 4th port and the first refrigerant pipeline respectively by control valve, the outlet of described indoor heat exchanger, outdoor heat exchanger and storage heater is communicated with and is formed refrigerant loop by the second refrigerant pipeline, this circulation realizes storage heater when frostless and carries out accumulation of heat, during defrost, storage heater uses and carries out heat release as evaporimeter, thereby guarantee that indoor set continues to heat, the poor problem of indoor set thermal comfort while having solved air conditioner heat pump system defrosting.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the air conditioner heat pump system schematic diagram of the first embodiment of the present utility model;
Fig. 2 shows the air conditioner heat pump system schematic diagram of the second embodiment of the present utility model;
Heat+hold over system of the air conditioner heat pump system that Fig. 3 shows the first embodiment of the present utility model circulation schematic diagram;
Fig. 4 shows the air conditioner heat pump system defrosting+heating circulation schematic diagram of the first embodiment of the present utility model;
Description of reference numerals: 1-compressor; 2,3-cross valve; 4-outdoor heat exchanger; 5-storage heater; 6-indoor heat exchanger; 71,72,73,74,75-electric expansion valve; 81-the second magnetic valve; 91-the first magnetic valve; 82-the 3rd magnetic valve; 92-the 4th magnetic valve; 10-water heater; 11-the first refrigerant pipeline; 12-the second refrigerant pipeline.
The specific embodiment
Hereinafter with reference to accompanying drawing, also describe the utility model in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
" entrance " " outlet " of mentioning in the utility model, the passage of general reference refrigerant turnover, do not refer in particular to the passage of a certain flow direction, because system refrigerant circulation flows to different under different mode, " entrance " can flow into refrigerant under different circulation patterns, also can flow out refrigerant, " outlet " can flow out refrigerant under different circulation patterns, also can flow into refrigerant.
According to embodiment of the present utility model, as shown in Figure 1, air conditioner heat pump system comprises that compressor 1, indoor heat exchanger 6, outdoor heat exchanger 4, electric expansion valve 71, electric expansion valve 73, electric expansion valve 74 and cross valve 2 are communicated with the refrigerant loop forming, in system, be also provided with storage heater 5 and electric expansion valve 72, between described compressor 1 and outdoor heat exchanger 4, by cross valve 3, connect, switch cross valve 3 and make to realize and being alternately communicated with between the exhaust outlet of outdoor heat exchanger 4 entrances and described compressor 1 and air entry; Cross valve 2, comprise the first port, the second port, the 3rd port and the 4th port, described the first port is communicated with described compressor 1 exhaust outlet, described the second port is communicated with described compressor 1 air entry, described the 3rd port is communicated with by the first refrigerant pipeline 11 with indoor heat exchanger 6, and the entrance of described storage heater 5 is communicated with described the 4th port and the first refrigerant pipeline 11 respectively by control valve; The outlet of described indoor heat exchanger 6, outdoor heat exchanger 4 and storage heater 5 is communicated with by the second refrigerant pipe 12 tunnels.
The air conditioner heat pump system that the utility model provides, by storage heater is set, the entrance of described storage heater is communicated with described the 4th port and the first refrigerant pipeline respectively by control valve, the outlet of described indoor heat exchanger, outdoor heat exchanger and storage heater is communicated with and is formed refrigerant loop by the second refrigerant pipeline, this circulation realizes storage heater when frostless and carries out accumulation of heat, during defrost, storage heater uses and carries out heat release as evaporimeter, thereby guarantee that indoor set continues to heat, the poor problem of indoor set thermal comfort while having solved air conditioner heat pump system defrosting.
As a kind of embodiment, described the 4th port and the first refrigerant pipeline 11 are communicated with the entrance of described storage heater 5 by the first magnetic valve 91 and the second magnetic valve 81 respectively.By controlling the switching of the first magnetic valve 91 and the second magnetic valve 81, realize the entrance of storage heater 5 and the logical state that closes between the 4th port and the 3rd port.
In above-described embodiment, by being stopped up or be connected with another port by capillary to realize, a port of cross valve 3 only has three port workings, above-mentioned cross valve 3 also can adopt triple valve to replace, or two two-port valves, as long as can realize between the exhaust outlet of outdoor heat exchanger 4 entrances and described compressor 1 and air entry, realize and being alternately communicated with.
As another kind of embodiment, air conditioner heat pump system also comprises water heater 10 and electric expansion valve 75, the refrigerant entrance of described water heater 10 is communicated with described the 4th port and the first refrigerant pipeline 11 respectively by control valve, the refrigerant exit of described water heater 10 is communicated with described the second refrigerant pipeline, thereby realizes water heating function.
Further, described the 4th port and the first refrigerant pipeline 11 are communicated with the refrigerant entrance of described water heater 10 by the 4th magnetic valve 92 and the 3rd magnetic valve 82 respectively, by controlling the logical state that closes that the switching of the 4th magnetic valve 92 and the 3rd magnetic valve 82 controls between water heater 10 and the 4th port and the 3rd port, realize water heating function.
Further, between described the 3rd magnetic valve and the refrigerant entrance of described water heater 10 and between described the 4th port and described the 4th magnetic valve, be in series with respectively check valve, described check valve flows to as the refrigerant entrance towards described water heater 10.By check valve is set, refrigerant bypass is leaked when preventing that control valve lost efficacy.
Further, the quantity of described indoor heat exchanger 6 is a plurality of, and a plurality of indoor heat exchangers are in parallel, be respectively a plurality of rooms air conditioning is provided.
The systemic circulation principle of the air conditioner heat pump system that the utility model provides is as follows:
1, kind of refrigeration cycle
Referring to Fig. 1 cross valve 2,3 dead electricity, magnetic valve 81,91 and electric expansion valve 72 are closed, electric expansion valve 71 standard-sized sheets.Compressor air-discharging carries out condensation through entering outdoor unit heat exchanger 4 after cross valve 3, then through outdoor electric expansion valve 71, enter indoor set, in indoor set, through carrying out heat exchange evaporation with indoor heat exchanger 6 after 73,74 throttlings of restricting element electric expansion valve, be the indoor cold that provides.After refrigerant evaporation, through cross valve 2, turn back in compressor again.Particular flow sheet is shown in Fig. 1.
2, heating operation
Referring to Fig. 3, while heating, cross valve 2,3 obtains electric, and magnetic valve 81,91 cuts out, and electric expansion valve 72 is closed.The exhaust of compressor 1 enters into indoor heat exchanger 6 through cross valve 2 and carries out heat exchange, to indoor, carries out heat supply, and cold media gas obtains condensation simultaneously.Then refrigerant enters outdoor heat exchanger 4 through indoor set restricting element electric expansion valve 73,74 and off-premises station electric expansion valve 71 respectively and carries out evaporation and heat-exchange, refrigerant just becomes low-pressure gas, cold media gas, by cross valve 3, enters vapour and divides subsequently, finally gets back to compressor 1.Particular flow sheet is shown in Fig. 3.
3, heat+regenerative operation
When heating operation, can realize storage heater 5 accumulation of heats, now magnetic valve 81 is opened, the exhaust of compressor enters through the first port of cross valve 2, in the 3rd port, be divided into two-way, the indoor heat exchanger 6 that one curb the first refrigerant pipeline 11 enters indoor set heats, other curb first refrigerant pipeline 11, magnetic valve 81 enter storage heater 5 and carry out heat exchange accumulation of heat with heat-storing material, then through electric expansion valve 72, before off-premises station electric expansion valve 71, converge with the refrigerant since indoor heat exchanger 6, finally return to compressor.Particular flow sheet is shown in Fig. 3.
4, heat+Defrost operation
Under heating operation pattern, if outdoor heat exchanger 4 detected, need defrost, system is controlled and is entered heating and defrosting operation, defrosting when realizing continuous heating.Now, cross valve 3 dead electricity, cross valve 2 obtains electric, and magnetic valve 81 cuts out, and magnetic valve 91 is opened, and electric expansion valve 72 is opened.The exhaust of compressor is divided into two-way, and a road enters outdoor heat exchanger 4 and defrosts through cross valve 3, and an other road enters indoor heat exchanger 6 through cross valve 2, to indoor, carries out heat supply, and outdoor fan is closed simultaneously, and indoor fan transfers low wind shelves to.Refrigerant through outdoor heat exchanger 4 and indoor heat exchanger 6 condensations is pooled to before electric expansion valve 72, through after throttling with storage heater in heat-storing material carry out heat exchange, refrigerant is evaporated, then through magnetic valve 91, cross valve 2, get back to compressor.So just realized the Defrost operation circulation of continuous heating.Particular flow sheet is shown in Fig. 4.
The air conditioner heat pump system that the utility model provides also has water heating function, has heat+water heating operational mode, heat+water heating+regenerative operation pattern, a heat+water heating+Defrost operation pattern and heat+defrost 2 operational modes.Introduce respectively the circulation process of each pattern below.
Heat+water heating operational mode, on the basis of above-mentioned " 2, heating mode " circulation, increase following control: shut electromagnetic valve 92, opens solenoid valve 82 and electric expansion valve 75, refrigerant enters the first refrigerant pipe through the 3rd outlet of cross valve 2 and by magnetic valve 82, enters water heater 10 and carry out water heating, refrigerant flows out through electric expansion valve 75 afterwards, and the refrigerant flowing out with indoor heat exchanger 6 converges to outdoor heat exchanger 4, finally enters compressor.Particular flow sheet is shown in Fig. 2.
Heat+water heating+regenerative operation pattern, on the basis of above-mentioned " 3, heat+regenerative operation " circulation, increase following control: shut electromagnetic valve 92, opens solenoid valve 82 and electric expansion valve 75, refrigerant enters the first refrigerant pipe through the 3rd outlet of cross valve 2 and by magnetic valve 82, enters water heater 10 and carry out water heating, refrigerant flows out through electric expansion valve 75 afterwards, and the refrigerant flowing out with indoor heat exchanger 6, storage heater 5 converges to outdoor heat exchanger 4, finally enters compressor.
Heat+water heating+Defrost operation pattern, on the basis of above-mentioned " 4, heat+Defrost operation " circulation, increase following control: shut electromagnetic valve 92, opens solenoid valve 82 and electric expansion valve 75, refrigerant enters the first refrigerant pipe through the 3rd outlet of cross valve 2 and by magnetic valve 82, enters water heater 10 and carry out water heating, refrigerant flows out through electric expansion valve 75 afterwards, and the refrigerant flowing out with indoor heat exchanger 6 converges to outdoor heat exchanger 4, finally enters compressor.
Heat+defrost 2 operational modes, on the basis of " 4, heat+Defrost operation " circulation, increase following control: shut electromagnetic valve 82, opens solenoid valve 92 and electric expansion valve 75, refrigerant after indoor heat exchanger 6 heats and the refrigerant after outdoor heat exchanger 4 defrosting enters respectively storage heater 5 and water heater 10 evaporates, finally enters compressor.In this pattern, storage heater 5 and water heater 10, simultaneously as evaporimeter, can improve defrost speed, improve the comfortableness of indoor heating.
The air conditioner heat pump system that the utility model provides, realize storage heater when frostless and carry out accumulation of heat, during defrost, storage heater uses and carries out heat release as evaporimeter, thereby guarantees that indoor set continues to heat, the poor problem of indoor set thermal comfort while having solved air conditioner heat pump system defrosting.Further, air conditioner heat pump system also has water heating function, and when defrost ability is satisfied the demand, water heater provides hot water, and when defrost scarce capacity, water heater serves as the auxiliary defrost of evaporimeter, can improve defrost speed, improves the comfortableness of indoor heating.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (7)
1. an air conditioner heat pump system, is characterized in that, comprising:
Compressor, indoor heat exchanger, outdoor heat exchanger and storage heater;
Between described compressor and outdoor heat exchanger, by reversal valve, connect, switch reversal valve and make to realize and being alternately communicated with between the exhaust outlet of outdoor heat exchanger entrance and described compressor and air entry;
Cross valve, comprise the first port, the second port, the 3rd port and the 4th port, described the first port is communicated with described exhaust outlet of compressor, described the second port is communicated with described compressor air suction mouth, described the 3rd port is communicated with by the first refrigerant pipeline with indoor heat exchanger, and the entrance of described storage heater is communicated with described the 4th port and the first refrigerant pipeline respectively by control valve;
The outlet of described indoor heat exchanger, outdoor heat exchanger and storage heater is communicated with by the second refrigerant pipeline.
2. air conditioner heat pump system according to claim 1, is characterized in that, described the 4th port and the first refrigerant pipeline are communicated with the entrance of described storage heater by the first magnetic valve and the second magnetic valve respectively.
3. air conditioner heat pump system according to claim 1, is characterized in that, described reversal valve is triple valve or cross valve.
4. air conditioner heat pump system according to claim 1, it is characterized in that, also comprise water heater, the refrigerant entrance of described water heater is communicated with described the 4th port and the first refrigerant pipeline respectively by control valve, and the refrigerant exit of described water heater is communicated with described the second refrigerant pipeline.
5. air conditioner heat pump system according to claim 4, is characterized in that, described the 4th port and the first refrigerant pipeline are communicated with the refrigerant entrance of described water heater by the 4th magnetic valve and the 3rd magnetic valve respectively.
6. air conditioner heat pump system according to claim 5, it is characterized in that, between described the 3rd magnetic valve and the refrigerant entrance of described water heater and between described the 4th port and described the 4th magnetic valve, be in series with respectively check valve, described check valve flows to as the refrigerant entrance towards described water heater.
7. according to the air conditioner heat pump system described in claim 1-6 any one, it is characterized in that, the quantity of described indoor heat exchanger is a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363197.0U CN203964489U (en) | 2014-07-01 | 2014-07-01 | Air conditioner heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363197.0U CN203964489U (en) | 2014-07-01 | 2014-07-01 | Air conditioner heat pump system |
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| CN203964489U true CN203964489U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420363197.0U Expired - Lifetime CN203964489U (en) | 2014-07-01 | 2014-07-01 | Air conditioner heat pump system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832989A (en) * | 2015-04-29 | 2015-08-12 | 广东美的制冷设备有限公司 | Air conditioner and control method for air conditioner |
| CN105758075A (en) * | 2016-04-01 | 2016-07-13 | 珠海格力电器股份有限公司 | Sectional heating and defrosting air conditioning system and heating and defrosting control method thereof |
| CN105928243A (en) * | 2016-06-17 | 2016-09-07 | 科希曼电器有限公司 | Combined type multifunctional heat pump system |
| CN106352414A (en) * | 2016-10-26 | 2017-01-25 | 广东美的制冷设备有限公司 | Heat accumulation and defrosting air-conditioning system and 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 |
| CN108709336A (en) * | 2018-08-21 | 2018-10-26 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN105276706B (en) * | 2015-10-16 | 2018-12-11 | 珠海格力电器股份有限公司 | Air conditioner and water heater integrated machine and control method thereof |
| CN109405335A (en) * | 2018-10-24 | 2019-03-01 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN112628848A (en) * | 2020-12-18 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN114251745A (en) * | 2021-12-10 | 2022-03-29 | 广东美的制冷设备有限公司 | Air conditioning system and air conditioning control method |
-
2014
- 2014-07-01 CN CN201420363197.0U patent/CN203964489U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832989B (en) * | 2015-04-29 | 2018-01-02 | 广东美的制冷设备有限公司 | The control method of air conditioner and air conditioner |
| CN104832989A (en) * | 2015-04-29 | 2015-08-12 | 广东美的制冷设备有限公司 | Air conditioner and control method for air conditioner |
| CN105276706B (en) * | 2015-10-16 | 2018-12-11 | 珠海格力电器股份有限公司 | Air conditioner and water heater integrated machine and control method thereof |
| CN105758075A (en) * | 2016-04-01 | 2016-07-13 | 珠海格力电器股份有限公司 | Sectional heating and defrosting air conditioning system and heating and defrosting control method thereof |
| CN105928243A (en) * | 2016-06-17 | 2016-09-07 | 科希曼电器有限公司 | Combined type multifunctional heat pump system |
| CN106352414A (en) * | 2016-10-26 | 2017-01-25 | 广东美的制冷设备有限公司 | Heat accumulation and defrosting air-conditioning system and 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 |
| CN106839498B (en) * | 2017-02-10 | 2019-12-20 | 美的集团股份有限公司 | Heat pump air conditioner and control method thereof |
| CN108709336B (en) * | 2018-08-21 | 2024-03-08 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN108709336A (en) * | 2018-08-21 | 2018-10-26 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN109405335A (en) * | 2018-10-24 | 2019-03-01 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN109405335B (en) * | 2018-10-24 | 2020-05-22 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| WO2020082735A1 (en) * | 2018-10-24 | 2020-04-30 | 合肥美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN112628848A (en) * | 2020-12-18 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN114251745A (en) * | 2021-12-10 | 2022-03-29 | 广东美的制冷设备有限公司 | Air conditioning system and air conditioning control method |
| CN114251745B (en) * | 2021-12-10 | 2023-03-07 | 广东美的制冷设备有限公司 | Air conditioning system and air conditioning control method |
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| GR01 | Patent grant | ||
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Granted publication date: 20141126 |