CN201662273U - Unremittingly heating and defrosting heat pump type air conditioner - Google Patents
Unremittingly heating and defrosting heat pump type air conditioner Download PDFInfo
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- CN201662273U CN201662273U CN2010201510579U CN201020151057U CN201662273U CN 201662273 U CN201662273 U CN 201662273U CN 2010201510579 U CN2010201510579 U CN 2010201510579U CN 201020151057 U CN201020151057 U CN 201020151057U CN 201662273 U CN201662273 U CN 201662273U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model relates to an unremittingly heating and defrosting heat pump type air conditioner, which comprises a compressor (1), a four-way valve (2), an indoor heat exchanger (4), an outdoor heat exchanger (12), a cold medium heater (3) and an electronic expansion valve (8), wherein a first interface of the four-way valve (2) is communicated with a high-pressure air exhaust opening of the compressor (1), a second interface of the four-way valve (2) is communicated with the outdoor heat exchanger (12), a third interface of the four-way valve (2) is communicated with the indoor heat exchanger (4), a fourth interface of the four-way valve (2) is communicated with a low-pressure air suction opening of the compressor (1), the unremittingly heating and defrosting heat pump type air conditioner is also connected in series with a second branch path, one end of the second branch path is communicated with a pipeline arranged between the third interface of the four-way valve (2) and the outdoor heat exchangers (12), the other end of the second branch path is communicated with a pipeline arranged between the third interface of the four-way valve (2) and the indoor heat exchangers (4).
Description
Technical field
The utility model relates to the heat pump type air conditioner of a kind of heat pump type air conditioner, particularly a kind of continuously heating and defrosting.
Background technology
More welcome air conditioner mainly contains two kinds at present.A kind of is heat pump type air conditioner, and it is to utilize the principle of air-conditioning in the refrigeration in summer, and promptly air-conditioning is indoor refrigeration when summer, outdoor heat radiation, and when heated autumn and winter, direction was opposite with summer, and indoor heating, outdoor refrigeration reaches the warm purpose of system.Its advantage is that effect is higher, and shortcoming is that the Applicable temperature scope is less, generally works as temperature and will quit work below subzero 5 degree.Also having a kind of is the auxilliary heat pump type air conditioner of electricity, promptly on the basis of heat pump type air conditioner, increase heating, the shortcoming of energy shortage when coming the supplemental heat heat pump heating with a spot of electrical heating, both can reduce effectively with simple electrically heated power consumption, and can reach again than temperature range with the use of simple heat pump.
In addition, when heat pump type air conditioner carries out the low-temperature heating operation in the winter time at the lower situation of many areas temperature in winter, because its evaporating temperature is lower than zero degree, make the outdoor heat exchanger surface, thereby have influence on the heating effect of air-conditioner frosting or icing.Be to guarantee the heating effect of air-conditioner, the frost or the ice on outdoor heat exchanger surface must be removed, generally adopt the mode of switching cross valve, carrying out kind of refrigeration cycle to reach the purpose of defrost at present.Indoor set must be out of service when this mode will cause defrosting, and can't provide heat to the interior space, and indoor temperature is descended, and has influence on the effect of user's heating.And positive and negative the flowing of frequent startup-shutdown and refrigerant also can form bigger impact to system, also can produce the impact noise of refrigerant.
The utility model content
At the defective that exists in the prior art, the purpose of this utility model is to provide a kind of heat pump type air conditioner of continuously heating and defrosting, and to reach simple in structure, defrosting effect is thorough, and when defrosting cross valve do not commutate the effect that indoor set can also continue to heat.
For reaching above purpose, the technical scheme that the utility model is taked is:
A kind of heat pump type air conditioner of continuously heating and defrosting, the heat pump type air conditioner of described continuously heating and defrosting comprises compressor 1, cross valve 2, indoor heat exchanger 4, outdoor heat exchanger 12, refrigerant heater 3, electric expansion valve 8, first interface of described cross valve 2 communicates with the compressor high-pressure exhaust, second interface communicates with outdoor heat exchanger, the 3rd interface communicates with indoor heat exchanger, described the 4th interface communicates with compressor low pressure air suction mouth, it is characterized in that: the heat pump type air conditioner of described continuously heating and defrosting also is connected in series one second branch road, one end of described second branch road and electric expansion valve 8 communicate with pipeline between the outdoor heat exchanger 12, and the other end and cross valve 2 the 3rd interface communicate with pipeline between the indoor heat exchanger 4.
Also be connected in series one first branch road, an end of described first branch road and electric expansion valve 8 communicate with pipeline between the indoor heat exchanger 4, and the other end and cross valve 2 second interfaces communicate with pipeline between the outdoor heat exchanger 4.
On the first auxilliary closed circuit, be connected in series first capillary 7, first magnetic valve 6, first check valve 5 and refrigerant heater 3 successively, one end of described second branch road and electric expansion valve communicate with pipeline between the outdoor heat exchanger, the other end and cross valve the 3rd interface communicate with pipeline between the indoor heat exchanger, are connected in series second check valve 10, second capillary 11 and second magnetic valve 9 on second branch road successively.
First branch road, one end at refrigerant heater 3 places and electric expansion valve 8 communicate with pipeline between the indoor heat exchanger 4, and second interface of the other end and cross valve 2 communicates with pipeline between the outdoor heat exchanger 12.
The refrigerant heater is made of shell, electric heating tube, high temperature heat conductive oil and refrigerant pipeline, and heat passes to high temperature heat conductive oil earlier by electric heating tube, passes to refrigerant in the refrigerant pipeline by high temperature heat conductive oil again, and wherein high temperature heat conductive oil also plays the function of store heat.
One end of second branch road and electric expansion valve 8 communicate with pipeline between the outdoor heat exchanger 12, and the other end and cross valve 2 the 3rd interface communicate with pipeline between the indoor heat exchanger 4.
The refrigeration mode in summer of the heat pump type air conditioner of described a kind of continuously heating and defrosting is that four-way change-over valve 2 first interfaces and second interface are communicated with, and the 3rd interface and the 4th interface are communicated with, and first magnetic valve 6 and second magnetic valve 9 are closed.
Described summer refrigeration mode the flow direction of refrigerant be compressor 1 high-pressure outlet to cross valve 1 first interface to cross valve 1 second interface to outdoor heat exchanger 12 to electromagnetic expanding valve 8 to indoor heat exchanger 4 to the low-pressure inlet of cross valve 1 the 3rd interface to cross valve (1) the 4th interface to compressor 1.
The winter of the heat pump type air conditioner of described a kind of continuously heating and defrosting, normal heating mode was that four-way change-over valve 1 first interface and the 3rd interface are communicated with, and second interface and the 4th interface are communicated with, and first magnetic valve 6 and second magnetic valve 9 are all closed.
Under the described winter normal heating mode flow direction of refrigerant be compressor 1 high-pressure outlet to cross valve 1 first interface to cross valve 1 the 3rd interface to indoor heat exchanger 4 to electromagnetic expanding valve 8 to outdoor heat exchanger 12 to the low-pressure inlet of cross valve 1 second interface to cross valve 1 the 4th interface to compressor 1.
Defrost in the winter heating mode of the heat pump type air conditioner of described a kind of continuously heating and defrosting is, four-way change-over valve 1 first interface and the 3rd interface are communicated with, second interface and the 4th interface are communicated with, and first magnetic valve 6 and second magnetic valve 9 are all opened, and close electric expansion valve 8 and outdoor fan simultaneously.
The refrigerant flow of described defrost in winter heating mode is a two-way, article one path direction be compressor 1 high-pressure outlet to cross valve 1 first interface to cross valve 1 the 3rd interface to indoor heat exchanger 4 to first 7 to first way solenoid valves of branch road capillary (6) to the first branch road check valve 5 to the refrigerant heater 3 to the low-pressure inlet of cross valve 1 second interface to cross valve 1 the 4th interface to compressor 1, the second path direction be the high-pressure outlet of compressor 1 to cross valve 1 first interface to cross valve 1 the 3rd interface to the second way solenoid valve 9 to second branch road capillaries, 11 to second branch road check valves 10 to outdoor heat exchanger 12 to the low-pressure inlet of cross valve 1 second interface to cross valve 1 the 4th interface to compressor 1, described refrigerant is divided into two-way when flowing out cross valve 1 the 3rd interface, converge when flowing into cross valve 1 second interface.
The heat pump type air conditioner of a kind of continuously heating and defrosting of the utility model has following advantage:
1, the HTHP refrigerant that utilizes during the defrost heating mode high-pressure outlet of compressor to discharge in the winter time, a part flows directly into indoor heat exchanger and carries out the condensation heat release, with normal heating operation in the holding chamber, keep indoor temperature and remain unchanged substantially, refrigerant after the heat release flows into the evaporation of absorbing heat of refrigerant heater; Another part refrigerant flows into second branch road, after second current limliting capillaceous, step-down, keeps high temperature, flows directly in the outdoor heat exchanger, and the heating clamber external heat exchanger reaches surperficial white layer the effect of melting outdoor heat exchanger.
2, two strands of refrigerants converge at outdoor heat exchanger and cross valve second interface, suck compressor from the compressor air suction mouth then and participate in heating circulation again.So heat under the prerequisite of circulation guaranteeing, can guarantee that the outdoor heat exchanger defrost is clean, can keep again and indoorly not shut down, guarantee the demand of indoor lasting heating.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 implements structural representation for the utility model
Refrigerant flowed to schematic diagram when Fig. 2 freezed for the utility model
Refrigerant flowed to schematic diagram when Fig. 3 heated for the utility model
Refrigerant flowed to schematic diagram when Fig. 4 was the utility model defrost
Reference numeral:
1 is compressor, and 2 is four-way change-over valve, and 3 is the refrigerant heater, and 4 is indoor heat exchanger, 5 is first check valve, and 6 is first magnetic valve, and 7 is first capillary, and 8 is electric expansion valve, 9 is second magnetic valve, and 10 is second check valve, and 11 is second capillary, and 12 is outdoor heat exchanger.
4 of four-way change-over valve direction interfaces are that side interface is that first interface, right side interface are that second interface, left side interface are the 3rd interface, upward side interface is the 4th interface down in proper order among the figure.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to Fig. 1, a kind of heat pump type air conditioner of continuously heating and defrosting comprises compressor 1, cross valve 2, indoor heat exchanger 4, outdoor heat exchanger 12, refrigerant heater 3, electric expansion valve 8.Compressor 1, cross valve 2, indoor heat exchanger 4, outdoor heat exchanger 12, refrigerant heater 3, electric expansion valve 8 have constituted a complete refrigeration, have heated main circulation loop, first interface of cross valve 2 communicates with compressor 1 high-pressure exhaust, second interface communicates with outdoor heat exchanger 12, the 3rd interface communicates with indoor heat exchanger 4, and the 4th interface communicates with compressor 1 low pressure air suction mouth.
Two branch roads on the basis of this main circulation loop, have been connected in series again.One end of first branch road and electric expansion valve 8 communicate with pipeline between the indoor heat exchanger 4, the other end and cross valve 2 second interfaces communicate with pipeline between the outdoor heat exchanger 12, are connected in series first capillary 7, first magnetic valve 6, first check valve 5 and refrigerant heater on first branch road successively.One end of second branch road and electric expansion valve 8 communicate with pipeline between the outdoor heat exchanger, the other end and cross valve 2 the 3rd interface communicate with pipeline between the indoor heat exchanger 4, are connected in series second check valve 10, second capillary 11 and second magnetic valve 9 on second branch road successively.
The frame of broken lines on the left side is represented indoor set among the figure, and the frame of broken lines on the right is represented off-premises station, and indoor set and off-premises station are communicated with by two tube connectors.
The utility model has two kinds of mode of operations, summer refrigeration mode and winter heating's pattern, divide again in the heating mode in the winter time normally to heat circulation and defrosting heats circulation, therefore one have three kinds of cold-producing medium endless form, each endless form is illustrated one by one below in conjunction with accompanying drawing.
Referring to Fig. 2, summer is during refrigeration mode, four-way change-over valve 2 first interfaces and second interface are communicated with, the 3rd interface and the 4th interface are communicated with, first magnetic valve 6 and second magnetic valve 9 are all closed, and the flow direction of refrigerant is: the high-pressure outlet of compressor 1 arrives electromagnetic expanding valve 8 to cross valve 1 interface one and arrives the low-pressure inlet of cross valve 1 interface three to cross valve 1 interface four to compressor 1 to indoor heat exchanger 4 to cross valve 1 interface two to outdoor heat exchanger 12.
Referring to Fig. 3, winter is during normal heating mode, four-way change-over valve 1 first interface and the 3rd interface are communicated with, second interface and the 4th interface are communicated with, first magnetic valve 6 and second magnetic valve 9 are all closed, and the flow direction of refrigerant is: the high-pressure outlet of compressor 1 to cross valve 1 first interface to cross valve 1 the 3rd interface to indoor heat exchanger 4 to electromagnetic expanding valve 8 to outdoor heat exchanger (12) to the low-pressure inlet of cross valve 1 second interface to cross valve 1 the 4th interface to compressor 1.
Referring to Fig. 4, during defrost in winter heating mode, four-way change-over valve 1 first interface and the 3rd interface are communicated with, second interface and the 4th interface are communicated with, first magnetic valve 6 and second magnetic valve 9 are all opened, and close electric expansion valve 8 and outdoor fan simultaneously, and refrigerant flow is divided into two.Article one, path direction is: 7 to first way solenoid valves of 4 to first branch road capillaries, 6 to first branch road check valves 5 arrive the low-pressure inlet of cross valve 1 second interface to cross valve 1 the 4th interface to compressor 1 to refrigerant heater 3 to the high-pressure outlet of compressor 1 to cross valve 1 the 3rd interface to indoor heat exchanger to cross valve 1 first interface.The second path direction is: 9 to second branch road capillaries, 11 to second branch road check valves 10 arrive the low-pressure inlet of cross valve 1 second interface to cross valve 1 the 4th interface to compressor 1 to outdoor heat exchanger 12 to the high-pressure outlet of compressor 1 to cross valve 1 first interface to cross valve 1 the 3rd interface to the second way solenoid valve.Wherein refrigerant is divided into two-way when flowing out cross valve 1 the 3rd interface, converges when flowing into cross valve 1 second interface.
Claims (10)
1. the heat pump type air conditioner of a continuously heating and defrosting, the heat pump type air conditioner of described continuously heating and defrosting comprises compressor (1), cross valve (2), indoor heat exchanger (4), outdoor heat exchanger (12), refrigerant heater (3), electric expansion valve (8), first interface of described cross valve (2) communicates with compressor (1) high-pressure exhaust, second interface communicates with outdoor heat exchanger (12), the 3rd interface communicates with indoor heat exchanger (4), the 4th interface communicates with compressor (1) low pressure air suction mouth, it is characterized in that: the heat pump type air conditioner of continuously heating and defrosting also is connected in series one second branch road, one end of described second branch road and electric expansion valve (8) communicate with pipeline between the outdoor heat exchanger (12), and the other end and cross valve (2) the 3rd interface communicate with pipeline between the indoor heat exchanger (4).
2. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 1, it is characterized in that: also be connected in series one first branch road, one end of described first branch road and electric expansion valve (8) communicate with pipeline between the indoor heat exchanger (4), and the other end and cross valve (2) second interfaces communicate with pipeline between the outdoor heat exchanger (12).
3. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 2, it is characterized in that: on first branch road, be connected in series first capillary (7), first magnetic valve (6), first check valve (5) and refrigerant heater (3) successively, one end of described second branch road and electric expansion valve (8) communicate with pipeline between the outdoor heat exchanger (12), the other end and cross valve (2) the 3rd interface communicate with pipeline between the indoor heat exchanger (4), are connected in series second check valve (10), second capillary (11) and second magnetic valve (9) on second branch road successively.
4. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 3, it is characterized in that: an end of second branch road and electric expansion valve (8) communicate with pipeline between the outdoor heat exchanger (12), and the other end and cross valve (2) the 3rd interface communicate with pipeline between the indoor heat exchanger (4).
5. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 4, it is characterized in that: the refrigeration mode in summer of the heat pump type air conditioner of described a kind of continuously heating and defrosting is that four-way change-over valve (2) first interfaces and second interface are communicated with, the 3rd interface and the 4th interface are communicated with, and first magnetic valve (6) and second magnetic valve (9) are closed.
6. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 5 is characterized in that: described summer refrigeration mode the flow direction of refrigerant be the high-pressure outlet of compressor (1) to cross valve (1) first interface to cross valve (1) second interface to outdoor heat exchanger (12) to electromagnetic expanding valve (8) to indoor heat exchanger (4) to the low-pressure inlet of cross valve (1) the 3rd interface to cross valve (1) the 4th interface to compressor (1).
7. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 4, it is characterized in that: the winter of the heat pump type air conditioner of described a kind of continuously heating and defrosting, normal heating mode was that four-way change-over valve (1) first interface and the 3rd interface are communicated with, second interface and the 4th interface are communicated with, and first magnetic valve (6) and second magnetic valve (9) are closed.
8. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 7 is characterized in that: under the winter normal heating mode flow direction of refrigerant be the high-pressure outlet of compressor (1) to cross valve (1) first interface to cross valve (1) the 3rd interface to indoor heat exchanger (4) to electromagnetic expanding valve (8) to outdoor heat exchanger (12) to the low-pressure inlet of cross valve (1) second interface to cross valve (1) the 4th interface to compressor (1).
9. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 4, it is characterized in that: defrost in the winter heating mode of the heat pump type air conditioner of described a kind of continuously heating and defrosting is, four-way change-over valve (1) first interface and the 3rd interface are communicated with, second interface and the 4th interface are communicated with, first magnetic valve (6) and second magnetic valve (9) are all opened, and close electric expansion valve (8) and outdoor heat exchanger (12) simultaneously.
10. the heat pump type air conditioner of a kind of continuously heating and defrosting according to claim 9, it is characterized in that: the refrigerant flow of described defrost in winter heating mode is a two-way, article one path direction be the high-pressure outlet of compressor (1) to first interface of cross valve (1) to cross valve (1) the 3rd interface to indoor heat exchanger (4) to the first branch road capillary (7) to first way solenoid valve (6) to the first branch road check valve (5) to refrigerant heater (3) to the low-pressure inlet of cross valve (1) second interface to cross valve (1) the 4th interface to compressor (1), the second path direction is that the high-pressure outlet of compressor (1) arrives cross valve (1) second interface low-pressure inlet to cross valve (1) four interface to compressor (1) to the second branch road capillary (11) to the second branch road check valve (10) to outdoor heat exchanger (12) to cross valve (1) first interface to cross valve (1) the 3rd interface to the second way solenoid valve (9), described refrigerant is divided into two-way when flowing out cross valve (1) the 3rd interface, converge when flowing into cross valve (1) interface two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510579U CN201662273U (en) | 2010-04-07 | 2010-04-07 | Unremittingly heating and defrosting heat pump type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510579U CN201662273U (en) | 2010-04-07 | 2010-04-07 | Unremittingly heating and defrosting heat pump type air conditioner |
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| CN201662273U true CN201662273U (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201510579U Expired - Lifetime CN201662273U (en) | 2010-04-07 | 2010-04-07 | Unremittingly heating and defrosting heat pump type air conditioner |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230650A (en) * | 2011-05-25 | 2011-11-02 | 宁波奥克斯空调有限公司 | Air conditioning system with multiple heating modes |
| CN102434915A (en) * | 2011-09-20 | 2012-05-02 | 海信（山东）空调有限公司 | Air-conditioner and control method thereof |
| CN103363709A (en) * | 2012-04-09 | 2013-10-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioner |
| CN103363744A (en) * | 2013-06-18 | 2013-10-23 | 镇江市博林光电科技有限公司 | Frosting preventive efficient refrigerating system |
| CN103363707A (en) * | 2012-04-09 | 2013-10-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioner |
| CN103375840A (en) * | 2012-04-13 | 2013-10-30 | 珠海格力电器股份有限公司 | Air conditioner system and defrosting method thereof |
| CN104101127A (en) * | 2013-04-01 | 2014-10-15 | 珠海格力电器股份有限公司 | Multi-split air conditioning system and defrosting control method thereof |
| WO2016008134A1 (en) * | 2014-07-17 | 2016-01-21 | Electrolux (Hangzhou) Home Appliance Co., Ltd. | Heat pump system |
| CN110307592A (en) * | 2019-06-17 | 2019-10-08 | Tcl空调器(中山)有限公司 | A kind of defrosting air-conditioning and control method |
| CN112032854A (en) * | 2020-07-30 | 2020-12-04 | 广东积微科技有限公司 | Outer quick-witted heat transfer system of air conditioner and air conditioner |
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2010
- 2010-04-07 CN CN2010201510579U patent/CN201662273U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230650A (en) * | 2011-05-25 | 2011-11-02 | 宁波奥克斯空调有限公司 | Air conditioning system with multiple heating modes |
| CN102434915A (en) * | 2011-09-20 | 2012-05-02 | 海信（山东）空调有限公司 | Air-conditioner and control method thereof |
| CN102434915B (en) * | 2011-09-20 | 2013-10-30 | 海信（山东）空调有限公司 | Air-conditioner and control method thereof |
| CN103363707B (en) * | 2012-04-09 | 2016-03-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioner |
| CN103363709A (en) * | 2012-04-09 | 2013-10-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioner |
| CN103363707A (en) * | 2012-04-09 | 2013-10-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioner |
| CN103363709B (en) * | 2012-04-09 | 2015-12-02 | 珠海格力电器股份有限公司 | Heat pump type air conditioner |
| CN103375840A (en) * | 2012-04-13 | 2013-10-30 | 珠海格力电器股份有限公司 | Air conditioner system and defrosting method thereof |
| CN104101127A (en) * | 2013-04-01 | 2014-10-15 | 珠海格力电器股份有限公司 | Multi-split air conditioning system and defrosting control method thereof |
| CN103363744A (en) * | 2013-06-18 | 2013-10-23 | 镇江市博林光电科技有限公司 | Frosting preventive efficient refrigerating system |
| WO2016008134A1 (en) * | 2014-07-17 | 2016-01-21 | Electrolux (Hangzhou) Home Appliance Co., Ltd. | Heat pump system |
| US20170211861A1 (en) * | 2014-07-17 | 2017-07-27 | Electrolux (Hangzhou)Home Appliances Co., Ltd. | Heat pump system |
| CN110307592A (en) * | 2019-06-17 | 2019-10-08 | Tcl空调器(中山)有限公司 | A kind of defrosting air-conditioning and control method |
| CN112032854A (en) * | 2020-07-30 | 2020-12-04 | 广东积微科技有限公司 | Outer quick-witted heat transfer system of air conditioner and air conditioner |
| US11774131B2 (en) | 2020-07-30 | 2023-10-03 | Guangdong Giwee Technology Co. Ltd. | Heat exchange system for outdoor unit of air conditioner and air conditioner |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170526 Address after: 315191 Yinzhou District Province, Ningbo City, Jiang Shan town on the village of summer ho Patentee after: AUX air conditioning Limited by Share Ltd Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Group. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |
|
| CX01 | Expiry of patent term |