CN103836849A - Waste heat energy storage defrosting system for frequency conversion scroll compressor of electric automobile - Google Patents
Waste heat energy storage defrosting system for frequency conversion scroll compressor of electric automobile Download PDFInfo
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- CN103836849A CN103836849A CN201410071039.2A CN201410071039A CN103836849A CN 103836849 A CN103836849 A CN 103836849A CN 201410071039 A CN201410071039 A CN 201410071039A CN 103836849 A CN103836849 A CN 103836849A
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- electric automobile
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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
Abstract
The invention discloses a waste heat energy storage defrosting system for a frequency conversion scroll compressor of an electric automobile. The waste heat energy storage defrosting system comprises the compressor, a heat exchanger outside the automobile, a heat exchanger inside the automobile, an electronic expansion valve, a gas-liquid separator, a dryer, a four-way reversing valve, a compressor phase-change heat storage device coating the compressor, a flow adjusting valve, a fan, an axial flow fan and a direct-current power supply. According to the waste heat energy storage defrosting system, the flow adjusting valve is controlled by a temperature sensor to be opened and closed, waste heat of a compressor shell and waste heat of refrigerating fluid of a condenser outlet are stored through the compressor phase-change heat storage device, system waste heat is effectively utilized, and the safe and efficient operation of an automobile air conditioner system is guaranteed. The waste heat energy storage defrosting system has the advantages that the waste heat of the electric automobile air conditioner system is effectively utilized, heating efficiency of a heat pump system is improved, and the aim of saving energy is achieved. The system can be flexibly applied to hybrid-power electric automobiles and battery electric automobiles, the effect of saving the energy is achieved, and the increase of endurance capacity of the electric automobile has great significance for development of the electric automobile.
Description
Technical field
The present invention relates to electric automobile heat-pump air-conditioning system field, particularly a kind of energy strorage by using residual heat defrost system for electric automobile frequency-changing cyclone compressor.
Background technology
Electric automobile has overcome fossil fuel Dependence Problem and the environmental issue of fuel-engined vehicle, using energy source diversification, quiet pollution-free, representing the trend of future automobile development, electric automobile does not have engine exhaust heat to utilize, need to adopt the air-conditioning system heat supply defrosting-defogging in the winter time of pump type heat, the operation of electric automobile air conditioner winter heating is the important feature that electric automobile air conditioner is different from general-utility car air-conditioning, screw compressor adapts to the energy-conservation of electric automobile heat-pump air-conditioning, variable working condition regulates, lightweight, the demand of direct drive, it is the developing direction of electric automobile heat-pump air-conditioning system.
The running environment of air conditioning for automobiles is more severe, the dynamic change of air conditioning for automobiles cooling and heating load is large, require air-conditioning system to there is comparatively broad Load Regulation ability and fast-refrigerating heating capacity, electric automobile does not have the engine exhaust heat can be for heating, and defrosting-defogging is not only the requirement of comfortableness in car, also be the national standard mandatory requirement for meeting automobile driving safe simultaneously, so electric automobile heat-pump system needs to ensure normal heat supply running under worst cold case in the winter time, heat pump low-temperature energy-saving operation problem and effectively defrosting problem of evaporimeter are electric automobile heat-pump system bottleneck problems urgently to be resolved hurrily.
The object of the invention is to overcome existing electric automobile heat-pump air-conditioning cisco unity malfunction and the lower shortcoming and defect of operational efficiency under low temperature environment, a kind of energy strorage by using residual heat defrost system of the screw compressor that comprises heat pump type air conditioning system of electric automobile is provided.It is low that the present invention solves existing electric automobile heat-pump air-conditioning system operational efficiency under worst cold case, the problem such as even cannot move; The present invention ensureing under the prerequisite of the normal work of compressor, effectively utilized condensator outlet cold-producing medium waste heat and heat of compressor in winter, improved the heating efficiency in electric automobile heat-pump air-conditioning winter.
The present invention is achieved through the following technical solutions:
A kind of energy strorage by using residual heat defrost system for electric automobile frequency-changing cyclone compressor, comprise compressor, car external heat exchanger, heat exchanger in car, electric expansion valve, gas-liquid separator, drier, four-way change-over valve, be wrapped in the compressor phase change heat accumulator outside compressor, flow control valve, blower fan, axial flow blower, dc source, the output of described compressor and the input of four-way change-over valve join, the first output port of four-way change-over valve communicates with the input of heat exchanger in car, in car, the output of heat exchanger is by the input of the first three-way pipe difference connecting electronic expansion valve and compressor phase change heat accumulator, the output of electric expansion valve and the entrance of drier join, the outlet of drier is connected with the input of car external heat exchanger and flow control valve respectively by the second three-way pipe, the 3rd output port of the output of car external heat exchanger and four-way change-over valve joins, the output of flow control valve is connected with the output of compressor phase change heat accumulator, the second output port of four-way change-over valve and the entrance of gas-liquid separator join, the outlet of gas-liquid separator and the entrance of compressor join, described blower fan is arranged at car external heat exchanger one side, described axial flow blower is arranged at heat exchanger one side in car, described dc source is compressor by circuit, blower fan and axial flow blower provide electric power.
Further, between described electric expansion valve and drier, be also serially connected with liquid-sighting glass.
Further, also comprise the temperature sensor being connected with flow control valve circuit, for according to the temperature opening and closing flow control valve of car external heat exchanger and compressor phase change heat accumulator, improve automaticity and comfort level.
Advantage and beneficial effect that the present invention has are as follows:
1, merge the electric automobile air-conditioning system of heat pump, heat pump operation in winter heating mode.In car, heat the operation phase that load is less, turn-on flow rate control valve, flows through waste heat after condenser by cold-producing medium and the waste heat of compressor case is stored in phase change heat accumulator; In the time flowing through refrigerant temperature after condenser lower than the temperature of phase change heat accumulator, close flow control valve, the waste heat of compressor case is stored in phase change heat accumulator; In the situation that not affecting the normal work of electric automobile air-conditioning system, store the part of waste heat of system.
2, merge the electric automobile air-conditioning system of heat pump, heat pump operation in winter heating mode.In the time that car external heat exchanger is operated in frozen condition, flow control valve is opened, flow through throttle part throttling from a heat exchanger cold-producing medium part out in car, another part absorbs the heat storing in phase change heat accumulator, two parts cold-producing medium converges rear temperature and has reached defrosting requirement, flows through car external heat exchanger and defrosts.Ensure the normal operation of electric automobile air-conditioning system, also reached the object of defrosting simultaneously.
brief description of the drawings:
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the heat pump working condition system low-temperature heat accumulating flow chart in winter of the embodiment of the present invention.
Fig. 3 is the heat pump working condition system high-temperature heat accumulation flow chart in winter of the embodiment of the present invention.
Heat pump working condition system defrosting in the winter flow chart of Fig. 4 embodiment of the present invention.
Shown in figure, be: 1-compressor; 2-compressor phase change heat accumulator; 3-gas-liquid separator; 4-cross valve; 5-flow control valve; 6-drier; 7-axial flow blower; 8-blower fan; 9-car external heat exchanger; Heat exchanger in 10-car; 11-liquid-sighting glass; 12-expansion valve; 13-dc source; 14-input port; 15-the first output port; 16-the second output port; 17-the 3rd output port.
Detailed description of the invention
Below in conjunction with instantiation, the present invention is done to further concrete detailed description in detail.
As shown in Figure 1, a kind of energy strorage by using residual heat defrost system for electric automobile frequency-changing cyclone compressor, comprise compressor 1, car external heat exchanger 9, heat exchanger 10 in car, electric expansion valve 12, gas-liquid separator 3, drier 6, four-way change-over valve 4, be wrapped in the compressor phase change heat accumulator 2 outside compressor 1, flow control valve 5, blower fan 8, axial flow blower 7, dc source 13, the output of described compressor 1 and the input of four-way change-over valve 14 join, the first output port 15 of four-way change-over valve 4 communicates with the input of heat exchanger 10 in car, in car, the output of heat exchanger 10 is by the input of the first three-way pipe difference connecting electronic expansion valve 12 and compressor phase change heat accumulator 2, the entrance of the output of electric expansion valve 12 and drier 6 joins, the outlet of drier 6 is connected with the input of car external heat exchanger 9 and flow control valve 5 respectively by the second three-way pipe, the 3rd output port 17 of the output of car external heat exchanger 9 and four-way change-over valve 4 joins, the output of flow control valve 5 is connected with the output of compressor phase change heat accumulator 2, the second output port 16 and the entrance of gas-liquid separator 3 of four-way change-over valve 4 join, the entrance of the outlet of gas-liquid separator 3 and compressor 1 joins, described blower fan 8 is arranged at car external heat exchanger 9 one sides, described axial flow blower 7 is arranged at heat exchanger 10 1 sides in car, described dc source 13 is compressor 1 by circuit, axial flow blower 7) and blower fan 7 electric power is provided.
Further, between described electric expansion valve 12 and drier 6, be also serially connected with the liquid-sighting glass 11 that user observes.
Further, also comprise the temperature sensor being connected with flow control valve 5 circuit, be used for according to the temperature opening and closing flow control valve 5 of car external heat exchanger 9 and compressor phase change heat accumulator 2, be used for according to the opening and closing of environment temperature automatic flow control regulating valve, make system automatically start or to close corresponding operational mode according to environment temperature, improve automaticity and comfort level.
Below in conjunction with accompanying drawing, describe operation principle and the operational mode of the present embodiment in detail.
1, as shown in Figure 2, when the temperature that detects compressor phase change heat accumulator 2 when temperature sensor simultaneously exports refrigerant temperature lower than compressor 1 skin temperature and Che Nei heat exchanger 10, heat pump operation heating mode, now turn-on flow rate control valve 5 (aperture is less) under the control of temperature sensor, compressor phase change heat accumulator 2 absorbs compressor 1 shell waste heat and Che Nei heat exchanger 10 and exports cold-producing medium waste heat and carry out heat-accumulating process, the flow direction of cold-producing medium as shown by the arrows in Figure 3, wherein the input port 14 of cross valve reversal valve 4 and the first output port 15 communicate, the second output port 16 and the 3rd output port 17 communicate.
2, as shown in Figure 3, in the time that temperature sensor detects the temperature of compressor phase change heat accumulator 2 heat exchanger 10 exports refrigerant temperature lower than compressor 1 skin temperature and in higher than car, heat pump operation heating mode, now temperature sensor cuts out flow control valve 5, compressor phase change heat accumulator 2 absorbs compressor 1 shell waste heat and carries out heat-accumulating process, the flow direction of cold-producing medium as shown by the arrows in Figure 3, wherein the input port 14 of cross valve reversal valve 4 and the first output port 15 communicate, and the second output port 16 and the 3rd output port 17 communicate.
3, as shown in Figure 4, compressor phase change heat accumulator 2 completes accumulation of heat, while there is frosting if temperature sensor detects that the temperature of car external heat exchanger 9 is too low, heat pump operation heating mode, now compressor phase change heat accumulator 2 release heat defrost, now turn-on flow rate control valve 5 (aperture is larger) under the control of temperature sensor, the flow direction of current refrigerant as shown by the arrows in Figure 4, the cold-producing medium with uniform temperature flowing out from compressor phase change heat accumulator 2 flows into car external heat exchanger through flow control valve 5, realize the defrosting object to car external heat exchanger, wherein the input port 14 of cross valve reversal valve 4 and the first output port 15 communicate, the second output port 16 and the 3rd output port 17 communicate.
This energy strorage by using residual heat defrost system is by the switching of temperature sensor control flow control valve, store compressor 1 shell waste heat and condensator outlet cold-producing medium waste heat with compressor phase change heat accumulator 2, effectively utilize system waste heat, ensure the safe and highly efficient operation of automotive air-conditioning system.
Due to the energy strorage by using residual heat defrost system of frequency-changing cyclone compressor of the present invention in the winter time time, compressor phase change heat accumulator 2 utilizes the heat storing to heat the cold-producing medium flowing through, this part cold-producing medium converges with the refrigeration after throttle part throttling, temperature reaches the defrosting temperature of car external heat exchanger 9, improve the evaporating temperature of system evaporator, thereby ensure the efficient operation of heat pump type air conditioning system, reduce the consumption of electric weight, improve the course continuation mileage of electric automobile.Because all parts of system normally moves, can ensure the thermal comfort in car simultaneously.
Effect of the present invention and advantage are effectively to utilize the waste heat of electric automobile air-conditioning system, improve the heating efficiency of heat pump, reach energy-conservation object.This invention can flexible Application in hybrid power and pure electric automobile, its energy-saving effect, the course continuation mileage that increases electric automobile has great significance to the development of electric automobile.
Just can realize preferably as mentioned above the present invention.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.All any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection domain of the claims in the present invention.
Claims (3)
1. the energy strorage by using residual heat defrost system for electric automobile frequency-changing cyclone compressor, it is characterized in that: comprise compressor (1), car external heat exchanger (9), heat exchanger (10) in car, electric expansion valve (12), gas-liquid separator (3), drier (6), four-way change-over valve (4), be wrapped in the outer compressor phase change heat accumulator (2) of compressor (1), flow control valve (5), blower fan (8), axial flow blower (7), dc source (13), the input (14) of the output of described compressor (1) and four-way change-over valve joins, first output port (15) of four-way change-over valve (4) communicates with the input of heat exchanger (10) in car, in car, the output of heat exchanger (10) is by the input of the first three-way pipe difference connecting electronic expansion valve (12) and compressor phase change heat accumulator (2), the entrance of the output of electric expansion valve (12) and drier (6) joins, the outlet of drier (6) is connected with the input of car external heat exchanger (9) and flow control valve (5) respectively by the second three-way pipe, the 3rd output port (17) of the output of car external heat exchanger (9) and four-way change-over valve (4) joins, the output of flow control valve (5) is connected with the output of compressor phase change heat accumulator (2), second output port (16) of four-way change-over valve (4) joins with the entrance of gas-liquid separator (3), the entrance of the outlet of gas-liquid separator (3) and compressor (1) joins, described blower fan (8) is arranged at car external heat exchanger (9) one sides, described axial flow blower (7) is arranged at heat exchanger (10) one sides in car, described dc source (13) is compressor (1) by circuit, axial flow blower (7) and blower fan (8) provide electric power.
2. the energy strorage by using residual heat defrost system for electric automobile frequency-changing cyclone compressor according to claim 1, is characterized in that: between described electric expansion valve (12) and drier (6), be also serially connected with liquid-sighting glass (11).
3. the energy strorage by using residual heat defrost system for electric automobile frequency-changing cyclone compressor according to claim 2, it is characterized in that: also comprise the temperature sensor being connected with flow control valve 5 circuit, for according to the temperature opening and closing flow control valve (5) of car external heat exchanger (9) and compressor phase change heat accumulator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071039.2A CN103836849A (en) | 2014-02-28 | 2014-02-28 | Waste heat energy storage defrosting system for frequency conversion scroll compressor of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410071039.2A CN103836849A (en) | 2014-02-28 | 2014-02-28 | Waste heat energy storage defrosting system for frequency conversion scroll compressor of electric automobile |
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| CN103836849A true CN103836849A (en) | 2014-06-04 |
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| CN201410071039.2A Pending CN103836849A (en) | 2014-02-28 | 2014-02-28 | Waste heat energy storage defrosting system for frequency conversion scroll compressor of electric automobile |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110920A (en) * | 2014-07-04 | 2014-10-22 | 西安交通大学 | Air-source heat pump system for recycling waste heat of compressor |
| CN105972894A (en) * | 2016-05-06 | 2016-09-28 | 方金湘 | Direct-current variable-frequency air conditioning unit of electric bus |
| CN107719067A (en) * | 2017-10-31 | 2018-02-23 | 天津大学 | A kind of electric automobile energy saving seat-air conditioning system |
| CN108638785A (en) * | 2018-04-16 | 2018-10-12 | 中国科学院广州能源研究所 | Novel electric vehicle heat pump air conditioning system based on phase-change energy storage defrosting and its control method |
| CN108973587A (en) * | 2018-06-29 | 2018-12-11 | 珠海格力电器股份有限公司 | A kind of automobile heat pump air-conditioning system and control method |
| CN109186134A (en) * | 2018-09-10 | 2019-01-11 | 珠海格力电器股份有限公司 | A kind of water chiller-heater unit compressor heat recovery system and control method |
| CN110143112A (en) * | 2019-05-29 | 2019-08-20 | 珠海格力电器股份有限公司 | Electric automobile air-conditioning system and its Defrost method, operation method, control system |
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| JPH0331666A (en) * | 1989-06-28 | 1991-02-12 | Matsushita Electric Ind Co Ltd | Heat pump type air conditioner |
| CN1175675A (en) * | 1996-08-31 | 1998-03-11 | 大宇电子株式会社 | Method of circulating refrigerant for defrosting and refrigerator employing the same |
| CN203719268U (en) * | 2014-02-28 | 2014-07-16 | 华南理工大学 | Waste-heat-storage defrosting system used in frequency conversion scroll compressor of electric automobile |
-
2014
- 2014-02-28 CN CN201410071039.2A patent/CN103836849A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0331666A (en) * | 1989-06-28 | 1991-02-12 | Matsushita Electric Ind Co Ltd | Heat pump type air conditioner |
| CN1175675A (en) * | 1996-08-31 | 1998-03-11 | 大宇电子株式会社 | Method of circulating refrigerant for defrosting and refrigerator employing the same |
| CN203719268U (en) * | 2014-02-28 | 2014-07-16 | 华南理工大学 | Waste-heat-storage defrosting system used in frequency conversion scroll compressor of electric automobile |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110920A (en) * | 2014-07-04 | 2014-10-22 | 西安交通大学 | Air-source heat pump system for recycling waste heat of compressor |
| CN105972894A (en) * | 2016-05-06 | 2016-09-28 | 方金湘 | Direct-current variable-frequency air conditioning unit of electric bus |
| CN107719067A (en) * | 2017-10-31 | 2018-02-23 | 天津大学 | A kind of electric automobile energy saving seat-air conditioning system |
| CN108638785A (en) * | 2018-04-16 | 2018-10-12 | 中国科学院广州能源研究所 | Novel electric vehicle heat pump air conditioning system based on phase-change energy storage defrosting and its control method |
| CN108973587A (en) * | 2018-06-29 | 2018-12-11 | 珠海格力电器股份有限公司 | A kind of automobile heat pump air-conditioning system and control method |
| CN109186134A (en) * | 2018-09-10 | 2019-01-11 | 珠海格力电器股份有限公司 | A kind of water chiller-heater unit compressor heat recovery system and control method |
| CN110143112A (en) * | 2019-05-29 | 2019-08-20 | 珠海格力电器股份有限公司 | Electric automobile air-conditioning system and its Defrost method, operation method, control system |
| CN110143112B (en) * | 2019-05-29 | 2024-02-23 | 珠海格力电器股份有限公司 | Electric automobile air conditioning system, defrosting method, operation method and control system thereof |
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Application publication date: 20140604 |