CN219172134U - New energy automobile heat pump air conditioner defrosting system - Google Patents
New energy automobile heat pump air conditioner defrosting system Download PDFInfo
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- CN219172134U CN219172134U CN202320007407.1U CN202320007407U CN219172134U CN 219172134 U CN219172134 U CN 219172134U CN 202320007407 U CN202320007407 U CN 202320007407U CN 219172134 U CN219172134 U CN 219172134U
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- 238000010257 thawing Methods 0.000 title claims abstract description 71
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- 239000007788 liquid Substances 0.000 claims description 23
- 239000002918 waste heat Substances 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 9
- 238000004146 energy storage Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 15
- 238000004378 air conditioning Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012782 phase change material Substances 0.000 abstract description 5
- 239000003595 mist Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
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- 238000000926 separation method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a new energy automobile heat pump air conditioner defrosting system utilizing phase change materials for heat storage. The heat exchanger comprises an in-vehicle heat exchanger, an out-vehicle heat exchanger and a compressor, wherein a heating circulation loop and a refrigerating circulation loop are respectively formed between the compressor and the in-vehicle heat exchanger and between the compressor and the out-vehicle heat exchanger through a four-way reversing valve, the heat exchanger also comprises a plate heat exchanger positioned in the vehicle, the plate heat exchanger is connected in series between the out-vehicle heat exchanger and the compressor to form a defrosting circulation loop, and the heat exchanger can supply heat to the out-vehicle heat exchanger through the plate heat exchanger to defrost when the in-vehicle heat exchanger is closed. The beneficial effects are that: the problem that the condensed water and water mist are generated to influence driving is effectively avoided, the problem that the cooling effect is accompanied with a short time in the traditional defrosting process is solved, and the comfort and the driving safety of the environment in the vehicle are improved. The problems of low energy efficiency and frosting and defrosting of the electric air conditioning system under low-temperature weather are effectively solved, and the purposes of comprehensively adjusting the temperature and humidity in the vehicle and improving the comfort in the vehicle are also realized.
Description
Technical Field
The utility model relates to a system for an automobile air conditioner, in particular to a new energy automobile heat pump air conditioner defrosting system utilizing phase change materials for heat storage.
Background
Different from traditional fuel oil car, electric automobile does not have the cooling water of engine, can't utilize engine exhaust heat to heat, and the new energy automobile's of present country heats basically to adopt PTC ceramic material to heat, blows out hot-blast by the fan, and this heating mode consumption is very high, so electric heat pump air conditioning system is the main trend of new energy automobile air conditioning system, electric heat pump air conditioning system can be based on battery power drive air conditioning system operation, realizes carrying out multiple functions such as refrigeration, heating, ventilation to the air in the carriage, provides more comfortable hot humid environment for riding and navigating mate.
However, in the running process of the electric heat pump air conditioning system under the working condition in winter, the heat exchanger outside the vehicle is an evaporator of the heat pump heating system, when the temperature outside the vehicle is very low, the frosting phenomenon of the evaporator outside the vehicle can influence the heating efficiency, and in order to ensure the heating effect of the heat pump air conditioning system of the vehicle, the defrosting treatment of the heat exchanger outside the vehicle is required.
In the prior art, a patent number is disclosed as follows: 202110011955.7A heat pump air conditioning system capable of quickly defrosting and a quick defrosting method thereof, which are applied to electric automobiles, are disclosed. In the defrosting process, the heating in the vehicle can be stopped, the refrigerating effect is achieved in a short time, the comfortableness of the environment in the vehicle is influenced by the alternation of cold and hot, on the other hand, when the defrosting mode is switched back to the heating mode, condensed water generated in the defrosting mode of the heat exchanger in the vehicle can be quickly evaporated, water mist is formed on a windshield, and the driving safety is influenced to a certain extent; meanwhile, more battery electric energy can be consumed in the defrosting mode, the battery is the core for a new energy automobile, and the more electric energy is consumed on an air conditioner, the more the endurance mileage of the automobile is reduced, so that the travel experience is influenced.
It can be seen that the defrosting scheme of the new energy automobile has some defects in economy and functionality based on the traditional method of switching the functions of the evaporator and the condenser. Therefore, a more energy-saving, safe and feasible technical scheme is provided, the defects of the existing method are overcome, and the method has important significance.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the new energy automobile heat pump air conditioner defrosting system which can fully utilize the waste heat generated by an engine in the running process of an automobile to realize the defrosting function of an automobile air conditioner system, thereby reducing the power consumption of the automobile air conditioner and achieving the economic and energy-saving effects.
In order to solve the technical problems, the novel energy automobile heat pump air conditioner defrosting system comprises an in-automobile heat exchanger, an out-automobile heat exchanger and a compressor, wherein a heating circulation loop and a refrigerating circulation loop are respectively formed between the compressor and the in-automobile heat exchanger and between the compressor and the out-automobile heat exchanger through a four-way reversing valve, and the novel energy automobile heat pump air conditioner defrosting system further comprises a plate heat exchanger positioned in the automobile, wherein the plate heat exchanger is connected in series between the out-automobile heat exchanger and the compressor to form a defrosting circulation loop, and can supply heat to the out-automobile heat exchanger through the plate heat exchanger to defrost when the in-automobile heat exchanger is closed.
And a waste heat energy storage circulating system matched with the plate heat exchanger is also arranged in the vehicle.
The waste heat energy storage circulating system comprises a phase change heat storage tank connected with the plate heat exchanger in parallel, an automobile waste heat system connected with the phase change heat storage tank in parallel and a circulating water pump connected between the phase change heat storage tank and the automobile waste heat system in series.
A bypass pipeline is arranged between the compressor and the heat exchanger outside the vehicle, a defrosting electromagnetic valve is arranged on the bypass pipeline, and output exhaust gas at the first end of the compressor can be conveyed to the heat exchanger outside the vehicle through the bypass pipeline to defrost hot gas after the defrosting electromagnetic valve is opened while the heat supply working condition operates.
An electric heating device is arranged in the phase change heat storage tank.
The first end of the compressor is connected to the heat exchanger in the vehicle and the heat exchanger outside the vehicle respectively through the four-way reversing valve, and the four-way reversing valve is also connected to the second end of the compressor through a gas-liquid separator.
The external heat exchanger of the vehicle also sequentially passes through a first electromagnetic valve, a first expansion valve, a second electromagnetic valve and the internal heat exchanger of the vehicle, and then passes through the four-way reversing valve and the gas-liquid separator to enter the compressor to form the refrigeration cycle loop.
The heat exchanger in the vehicle also sequentially passes through a second electromagnetic valve, an economizer, a second expansion valve, a third electromagnetic valve and the heat exchanger outside the vehicle, and then passes through the four-way reversing valve and the gas-liquid separator to enter the compressor to form the heating circulation loop.
The heat exchanger in the vehicle is further connected to the air supplementing port of the compressor after passing through a third expansion valve, an economizer and a one-way valve in sequence.
The heat exchanger outside the vehicle is connected with the plate heat exchanger through the third electromagnetic valve, the second expansion valve, the economizer and the fourth electromagnetic valve in sequence.
The utility model has the following beneficial effects:
(1) The plate heat exchanger which is arranged in the vehicle and connected between the external heat exchanger and the compressor in series to form a defrosting circulation loop can be used for directly supplying heat to the external heat exchanger through the plate heat exchanger for defrosting when the internal heat exchanger is closed, meanwhile, the internal heat exchanger does not work when the defrosting circulation works, condensed water is not generated, water mist is not generated, driving is affected, the problem that the traditional defrosting process is accompanied with a short-time refrigeration effect is effectively avoided, and the comfort and the driving safety of the internal environment are improved.
(2) The electric air conditioner system can directly store waste heat generated by a driving system and a battery system (generally called an automobile waste heat system) of an electric automobile for defrosting, realizes the utilization of the waste heat, thoroughly solves the problem of insufficient defrosting heat sources, and further eliminates the problem of excessive battery electric energy consumption in the defrosting process, thereby effectively solving the problems of low energy efficiency and frosting and defrosting of the electric air conditioner system under low-temperature weather, and also realizing the purposes of comprehensively adjusting the temperature in the automobile and improving the comfort in the automobile.
(3) The bypass pipeline with the defrosting electromagnetic valve is arranged between the compressor and the external heat exchanger, the air source heat pump system with the compressor for supplementing air and increasing enthalpy and the economizer is adopted, and various different technical means for storing waste heat in the electric control system and the battery system of the new energy automobile are adopted, so that the phase change heat storage defrosting mode and the hot gas bypass defrosting mode can be simultaneously realized, the comfort and safety problems caused by the mutual switching of the heating mode and the defrosting mode in the existing heat pump air conditioning system are thoroughly solved, the defrosting effect and the reliability of the whole automobile heat pump system are better, and the endurance mileage of the new energy automobile is improved.
Drawings
Fig. 1 is a schematic diagram of a heat pump air conditioner defrosting system for a new energy automobile according to the present utility model.
Detailed Description
The novel energy automobile heat pump air conditioner defrosting system of the utility model is further described in detail below with reference to the accompanying drawings and the detailed description,
as shown in the figure, the defrosting system of the heat pump air conditioner of the new energy automobile comprises an in-automobile heat exchanger 1, an out-automobile heat exchanger 2 and a compressor 3, wherein the first end of the compressor 3 is respectively connected to the in-automobile heat exchanger 1 and the out-automobile heat exchanger 2 through a four-way reversing valve 4, the four-way reversing valve 4 is also connected to the second end of the compressor 3 through a gas-liquid separator 10, meanwhile, the out-automobile heat exchanger 2 is also sequentially connected to the compressor through a first electromagnetic valve 11, a first expansion valve 12, a second electromagnetic valve 13 and the in-automobile heat exchanger 1, then sequentially connected to the four-way reversing valve 4 and the gas-liquid separator 10 through the four-way reversing valve 4 and the gas-liquid separator 10 to form a refrigerating circulation loop, in addition, the in-automobile heat exchanger 1 is sequentially connected to the four-automobile heat exchanger 14, the two-expansion valve 15, the three-electromagnetic valve 16 and the out-automobile heat exchanger 2 through the four-way reversing valve 4 and the gas-liquid separator 10 to form a heating circulation loop, and the refrigerating circulation loop and the heat exchanger 5 can be sequentially connected to the air-conditioner 5 through the first electromagnetic valve 14 and the three-electromagnetic valve 5 and the four-electromagnetic valve 5 after sequentially connected to the heat exchanger 1 and the air-exchanger 5 through the four-electromagnetic valve 14 and the air-exchanger 5 to form a defrosting loop.
Further, a waste heat energy storage circulating system matched with the plate heat exchanger 5 is further arranged in the vehicle, and as can be seen from the figure, the waste heat energy storage circulating system comprises a phase change heat storage tank 6 connected with the plate heat exchanger 5 in parallel, a vehicle waste heat system 7 connected with the phase change heat storage tank 6 in parallel and a circulating water pump 8 connected between the phase change heat storage tank 6 and the vehicle waste heat system 7 in series, a matched constant pressure tank 22 is arranged at the side of the phase change heat storage tank 6, the vehicle waste heat system 7 is a vehicle driving and battery system, an electric heating device is arranged in the phase change heat storage tank 6, and the heat pump air conditioning system and the phase change heat storage system are connected by taking the plate heat exchanger as a tie through the structural design.
Still further, be provided with a bypass line between compressor 3 and the external heat exchanger 2, be provided with a defrosting solenoid valve 9 on the bypass line, when the heat supply operating mode operation open after the defrosting solenoid valve can make the output exhaust of the No. one end of compressor 3 carry to external heat exchanger 2 through the bypass line and carry out the steam defrosting.
In addition, the heat exchanger 1 in the vehicle is further connected to the air supply port of the compressor 3 after passing through the second electromagnetic valve 13, the sixth electromagnetic valve 21, the third expansion valve 17, the economizer 14 and the check valve 18 in sequence, so that the efficient heating operation of the vehicle air conditioning system in a low-temperature environment can be realized by adopting an air source heat pump system (short for air supply enthalpy-increasing air source heat pump) with the compressor air supply enthalpy-increasing and economizer.
The working principle is as follows:
when the heat pump air conditioning system is in refrigeration operation, the first electromagnetic valve 11 and the second electromagnetic valve 13 are opened, the third electromagnetic valve 16, the fourth electromagnetic valve 19, the sixth electromagnetic valve 21, the fifth electromagnetic valve 20 and the defrosting electromagnetic valve 9 are closed, a working medium (refrigerant R134A) is compressed into high-temperature high-pressure steam through the compressor 3, the high-temperature high-pressure steam reaches the external heat exchanger 2 through the four-way reversing valve 4, the working medium takes heat away through air cooling heat exchange in the external heat exchanger 2 and is high-temperature high-pressure liquid, the high-temperature high-pressure liquid is throttled and depressurized through the first electromagnetic valve 11 and the first expansion valve 12, the high-pressure liquid is absorbed by the internal heat exchanger 1 through the second electromagnetic valve 13, the internal heat is absorbed into a gas-liquid mixed state through the internal heat exchanger 1, then the gas-liquid separator 10 is used for gas-liquid separation after the four-way reversing valve 4 to prevent wet compression working conditions, and finally the working medium returns to the compressor 3 to form refrigeration cycle.
When the heat pump air conditioning system heats and operates, the second electromagnetic valve 13, the second expansion valve 15 and the third electromagnetic valve 16 are opened, the first electromagnetic valve 11, the fourth electromagnetic valve 19, the fifth electromagnetic valve 20 and the defrosting electromagnetic valve 9 are closed, working medium (refrigerant R134A) is compressed into high-temperature high-pressure steam through the compressor 3, the high-temperature high-pressure steam reaches the in-vehicle heat exchanger 1 through the four-way reversing valve 4 to release heat and then becomes high-temperature high-pressure refrigerant liquid, a part of the refrigerant is throttled and depressurized into low-temperature low-pressure refrigerant liquid through the second electromagnetic valve 13 and the economizer 14, and then becomes gas-liquid mixed state refrigerant after heat absorption through the evaporation of the third electromagnetic valve 16 and the out-vehicle heat exchanger 2, and then reaches the gas-liquid separator 10 through the four-way reversing valve 4 to perform gas-liquid separation and then returns to the compressor to complete heat supply circulation;
the air supplementing and enthalpy increasing process under the heat supply working condition is as follows: the electromagnetic valve 21 and the expansion valve 17 are opened, the other part of refrigerant after the working medium (R134A) releases heat through the heat exchanger 1 in the vehicle passes through the electromagnetic valve 21 and the expansion valve 17 to be depressurized and throttled, then reaches the economizer 14, and returns to the air supplementing port of the compressor through the one-way valve 18 to achieve the air supplementing and enthalpy increasing functions, so that the heating operation is realized.
When defrosting is needed in the heat pump heating working condition operation process, the heat storage defrosting working condition operation is performed, the second electromagnetic valve 13 is closed, the plate heat exchanger 5 is used as a low-temperature evaporator to supply heat to the external heat exchanger 2, the first electromagnetic valve 11, the fourth electromagnetic valve 19 and the fifth electromagnetic valve 20 are opened, the second electromagnetic valve 13, the third electromagnetic valve 16, the sixth electromagnetic valve 21 and the defrosting electromagnetic valve 9 are closed, the working medium (refrigerant R134A) is compressed into high-temperature high-pressure steam through the compressor 3 and then reaches the external heat exchanger 2 through the four-way reversing valve 4 to supply heat and defrost, after defrosting is finished, the working medium is throttled and depressurized through the first electromagnetic valve 11 and the first expansion valve 12, is evaporated in the plate heat exchanger 5 through the fourth electromagnetic valve 19 and then is separated into liquid through the gas-liquid separator 6 (the sixth electromagnetic valve 23 is arranged between the fifth electromagnetic valve 20 and the four-way reversing valve 4), and finally the working medium (refrigerant R134A) returns to the compressor to complete defrosting cycle; meanwhile, a waste heat energy storage circulating system is formed among the other side of the plate heat exchanger 5, the phase change heat storage tank 6, an automobile waste heat system 7 (an automobile driving and battery system), the circulating water pump 8 and the constant pressure tank 22.
The utility model also considers the condition of incomplete heat accumulation and defrosting, when the heat release process of the phase change material in the heat accumulation tank 11 is finished but defrosting is not finished, namely: when the heat accumulation defrosting is incomplete, the hot gas bypass defrosting working condition is operated, and the hot gas bypass defrosting working condition is as follows: the heat pump system is operated under a heat supply working condition, the four-way valve 4 does not need reversing, the defrosting electromagnetic valve 9 at the outlet of the compressor 3 is opened, and the exhaust gas of the compressor 3 passes through a bypass pipeline to the inlet of the off-vehicle heat exchanger 2 (evaporator) for hot gas defrosting.
Meanwhile, as a preferable improvement of defrosting efficiency, an electric heating device can be added in the heat storage tank 6, and when the heat storage of the phase change material in the heat storage tank 6 does not completely reach the maximum heat storage capacity of the heat storage tank and the automobile battery system is in a charging process (automobile charging), an electric heater built in the heat storage tank 6 starts a heating function, so that a part of electric energy can be provided to store the heat storage tank 6, the heat storage process of the phase change material in the heat storage tank 6 is realized, and the electric heater is used for defrosting.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a new energy automobile heat pump air conditioner defrosting system, includes interior heat exchanger (1), outside heat exchanger (2) and compressor (3), its characterized in that: the compressor (3) is respectively formed with a heating circulation loop and a refrigerating circulation loop between the heat exchanger (1) in the vehicle and the heat exchanger (2) outside the vehicle through a four-way reversing valve (4), the device also comprises a plate heat exchanger (5) positioned in the vehicle, and the plate heat exchanger (5) is connected in series between the heat exchanger (2) outside the vehicle and the compressor (3) to form a defrosting circulation loop and can defrost the heat exchanger (2) outside the vehicle through the plate heat exchanger (5) when the heat exchanger (1) in the vehicle is closed.
2. The new energy automobile heat pump air conditioner defrosting system according to claim 1, wherein: and a waste heat energy storage circulating system matched with the plate heat exchanger (5) is also arranged in the vehicle.
3. The new energy automobile heat pump air conditioner defrosting system according to claim 2, wherein: the waste heat energy storage circulating system comprises a phase change heat storage tank (6) connected with the plate heat exchanger (5) in parallel, an automobile waste heat system (7) connected with the phase change heat storage tank (6) in parallel and a circulating water pump (8) connected between the phase change heat storage tank (6) and the automobile waste heat system (7) in series.
4. A new energy automobile heat pump air conditioner defrosting system according to claim 1, 2 or 3, characterized in that: a bypass pipeline is arranged between the compressor (3) and the external heat exchanger (2), a defrosting electromagnetic valve (9) is arranged on the bypass pipeline, and output exhaust gas at a first end of the compressor (3) can be conveyed to the external heat exchanger (2) through the bypass pipeline to defrost hot gas after the defrosting electromagnetic valve is opened while the compressor runs under a heating working condition.
5. A new energy automobile heat pump air conditioner defrosting system according to claim 3, wherein: an electric heating device is arranged in the phase change heat storage tank (6).
6. The new energy automobile heat pump air conditioner defrosting system according to claim 1, 2, 3 or 5, wherein: the first end of the compressor (3) is connected to the heat exchanger (1) in the vehicle and the heat exchanger (2) outside the vehicle respectively through the four-way reversing valve (4), and the four-way reversing valve (4) is also connected to the second end of the compressor (3) through a gas-liquid separator (10).
7. The new energy automobile heat pump air conditioner defrosting system according to claim 6, wherein: the external heat exchanger (2) is further sequentially connected with the internal heat exchanger (1) through a first electromagnetic valve (11), a first expansion valve (12), a second electromagnetic valve (13) and the internal heat exchanger (1), and then connected with the four-way reversing valve (4) and the gas-liquid separator (10) to form the refrigeration cycle loop.
8. The new energy automobile heat pump air conditioner defrosting system according to claim 6, wherein: the heat exchanger (1) in the automobile is further sequentially connected with the electromagnetic valve (13), the economizer (14), the expansion valve (15), the electromagnetic valve (16) and the heat exchanger (2) outside the automobile, and then connected with the four-way reversing valve (4) and the gas-liquid separator (10) to enter the compressor to form the heating circulation loop.
9. The new energy automobile heat pump air conditioner defrosting system according to claim 8, wherein: the in-car heat exchanger (1) is further connected to the air supplementing port of the compressor (3) after sequentially passing through a third expansion valve (17), an economizer (14) and a one-way valve (18).
10. The new energy automobile heat pump air conditioner defrosting system according to claim 8 or 9, wherein: the external heat exchanger (2) is connected with the plate heat exchanger (5) through the third electromagnetic valve (16), the second expansion valve (15), the economizer (14) and the fourth electromagnetic valve (19) in sequence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320007407.1U CN219172134U (en) | 2023-01-03 | 2023-01-03 | New energy automobile heat pump air conditioner defrosting system |
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| CN202320007407.1U CN219172134U (en) | 2023-01-03 | 2023-01-03 | New energy automobile heat pump air conditioner defrosting system |
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| CN219172134U true CN219172134U (en) | 2023-06-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116674348A (en) * | 2023-08-02 | 2023-09-01 | 江铃汽车股份有限公司 | Defrosting method and system for external heat exchanger of heat pump air conditioner and computer equipment |
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2023
- 2023-01-03 CN CN202320007407.1U patent/CN219172134U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116674348A (en) * | 2023-08-02 | 2023-09-01 | 江铃汽车股份有限公司 | Defrosting method and system for external heat exchanger of heat pump air conditioner and computer equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhenjiang Dongfangshanyuan Electric Heating Co.,Ltd. Assignor: ZHENJIANG DONGFANG ELECTRIC HEATING TECHNOLOGY CO.,LTD. Contract record no.: X2023320000253 Denomination of utility model: A New Energy Vehicle Heat Pump Air Conditioning Defrosting System Granted publication date: 20230613 License type: Common License Record date: 20231214 |
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| EE01 | Entry into force of recordation of patent licensing contract |