CN202938438U - Electric car heat pump air conditioning system driven by variable frequency motor - Google Patents
Electric car heat pump air conditioning system driven by variable frequency motor Download PDFInfo
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- CN202938438U CN202938438U CN2012206595089U CN201220659508U CN202938438U CN 202938438 U CN202938438 U CN 202938438U CN 2012206595089 U CN2012206595089 U CN 2012206595089U CN 201220659508 U CN201220659508 U CN 201220659508U CN 202938438 U CN202938438 U CN 202938438U
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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 electric car heat pump air conditioning system driven by a variable frequency motor, and belongs to the air-conditioning technology and the car technical field. The electric car heat pump air conditioning system can achieve the functions of heating and cooling simultaneously, and part of heat in the environment can be effectively utilized in a heating mode. Compared with a traditional electrical heating mode, the advantages of being high in energy efficiency, free of potential risks and the like are achieved. The electric car heat pump air conditioning system driven by the variable frequency motor is simple in structure, low in cost, convenient to control in the using process and low in energy consumption. Meanwhile, the revolving speed of the variable frequency motor and a car indoor/outdoor heat exchanger fan can be regulated at any time according to signals collected by a car indoor/outdoor temperature sensor, and so that the system can work all the time under an optimal working condition.
Description
Technical field
The utility model relates to the electric automobile heat-pump air-conditioning system that a kind of variable-frequency motor drives, and belongs to air-conditioning technical and automobile technical field.
Background technology
What the automotive air-conditioning system take internal combustion engine as power adopted when freezing summer is steam compression cycle, and what utilize when warm oneself winter is engine exhaust heat.And can be less for the waste heat that utilizes in electric automobile, can't satisfy the requirement of heating in winter.Under the prior art condition, be the car indoor environment heating of electric automobile if adopt traditional electrical heating method, can badly influence distance travelled because energy consumption is higher, therefore, be unfavorable for application and the popularization of electric automobile.
Summary of the invention
The utility model proposes a kind of variable-frequency motor of steam compression cycle that adopts and drives electric automobile heat-pump air-conditioning system, for driver and crew provide comfortable environment for the electric automobile high shortcoming of energy consumption of warming oneself winter.
The electric automobile heat-pump air-conditioning system that a kind of variable-frequency motor drives mainly comprises variable-frequency motor, compressor, four-way change-over valve, car outdoor heat exchanger fan, car outdoor heat exchanger, the first expansion valve, the first check valve, the second check valve, the 3rd check valve, the 4th check valve, the second expansion valve, the first triple valve, the second triple valve, the 3rd triple valve, the 4th triple valve, car indoor temperature transmitter, car indoor heat exchanger, car indoor heat exchanger fan, control system, gas-liquid separator, the pressure sensor at car outdoor temperature sensor and exhaust outlet of compressor place.
In electric automobile heat-pump air-conditioning system of the present utility model, the belt wheel of variable-frequency motor is connected by polywedge bet with the belt wheel of compressor, drives compressor operating.The exhaust outlet of compressor connects the entrance of four-way change-over valve with air conditioning hose, and the appropriate position setting pressure sensor in this flexible pipe, and the air entry of compressor connects the outlet of gas-liquid separator with air conditioning hose; Its excess-three mouth of four-way change-over valve is connected with the outlet of car indoor heat exchanger, the outlet of car outdoor heat exchanger and the entrance of gas-liquid separator respectively with air conditioning hose; Be connected with the first triple valve with the entrance of copper pipe with the car outdoor heat exchanger, two mouthfuls of all the other of the first triple valve connect the entrance of the first check valve and the outlet of the first expansion valve with copper pipe respectively, entrance with the first expansion valve is connected with copper pipe with the outlet of the second check valve simultaneously, with copper pipe, the entrance of the outlet of the first check valve and the second check valve is connected with two mouthfuls of the second triple valve respectively; Be connected with wherein a bite of the 4th triple valve with the entrance of copper pipe with the car indoor heat exchanger, all the other two mouthfuls are connected with the outlet of the second expansion valve and the entrance of the 4th check valve respectively with copper pipe, be connected with the outlet of the 3rd check valve with the entrance of copper pipe with the second expansion valve, the outlet of the entrance of the 3rd check valve and the 4th check valve is connected with two mouthfuls of the 3rd triple valve respectively with copper pipe, at last the second triple valve is connected with air conditioning hose with the 3rd triple valve, forms the circuit system of sealing.The pressure sensor at described control system and car outdoor temperature sensor, car indoor temperature transmitter and exhaust outlet of compressor place is connected by shielding line, and its output connects respectively variable-frequency motor, four-way change-over valve, car outdoor heat exchanger fan, car indoor heat exchanger fan.
Described control system comprises data acquisition module and object control module.The signal of data collecting module collected car indoor temperature, car outdoor temperature, Compressor Discharge Pressure, and it is sent in control system; Control system generates relevant control signal according to the data that gather, by the control of four-way change-over valve being realized the selection of refrigeration or heating mode, by the control to variable-frequency motor, car outdoor heat exchanger fan, car indoor heat exchanger rotation speed of the fan, electric automobile heat-pump air-conditioning system is worked under the higher state of Energy Efficiency Ratio.
Described the first expansion valve is inner equilibrium formula expansion valve, reducing pressure by regulating flow, adjust flux when heating.The temperature-sensitive bag of the first expansion valve is fixed on the exit of car outdoor heat exchanger, experiences the degree of superheat of car outdoor heat exchanger exit working medium under heating mode, thereby the aperture of variable expansion valve automatically realizes the purpose of adjust flux.The flow adjustment range of the first expansion valve is large, and temperature control precision is high, and reaction speed is fast, good stability, and bring into operation and can protect compressor when out of service in system.
Described the second expansion valve is inner equilibrium formula expansion valve, reducing pressure by regulating flow, adjust flux when refrigeration.The temperature-sensitive bag of the second expansion valve is fixed on the exit of car indoor heat exchanger, the aperture of the automatic variable expansion valve of temperature in the car indoor heat exchanger exit of experiencing according to the temperature-sensitive bag, thus reach the purpose of adjust flux.The flow adjustment range of the second expansion valve is large, and temperature control precision is high, and reaction speed is fast, good stability, and bring into operation and can protect compressor when out of service in system.
Described car outdoor heat exchanger serves as condenser under refrigeration mode, serve as evaporimeter under heating mode.Under the prerequisite that satisfies the heat exchange amount, should make the volume of car outdoor heat exchanger as much as possible little, and have shock resistance.
Described car indoor heat exchanger serves as evaporimeter under refrigeration mode, serve as condenser under heating mode.Under the prerequisite that satisfies the heat exchange amount, should make the volume of car indoor heat exchanger as much as possible little, and have shock resistance.
The workflow of electric automobile heat-pump air-conditioning system of the present utility model is as follows:
When the indoor needs cooling of the higher car of environment temperature, heat pump type air conditioning system starts, and control system makes four-way change-over valve be in the state of outage, and work this moment under refrigeration mode.The HTHP gaseous working medium of at first being discharged by compressor enters the car outdoor heat exchanger through four-way change-over valve, then enter the second expansion valve from the first check valve and the 3rd check valve, then under the reducing pressure by regulating flow effect of the second expansion valve, enter evaporation endothermic in the car indoor heat exchanger, reduce the indoor temperature of car, last working medium is inhaled in compressor through another passage of four-way change-over valve and gas-liquid separator to be compressed, and realizes kind of refrigeration cycle.Under refrigeration mode, working medium is without the first expansion valve, the second check valve and the 4th check valve.
When heat pump type air conditioning system is started working under refrigeration mode, the main target of control system is to reduce as early as possible the indoor temperature of car, control system is according to the temperature signal of car indoor temperature transmitter and car outdoor temperature sensor, control variable-frequency motor, car indoor heat exchanger fan and car outdoor heat exchanger fan and be in lower operation at a high speed, this moment, system moved under the pattern of refrigerating capacity maximum; Along with the decline of car indoor temperature, control system will be taken into account the Energy Efficiency Ratio of system, controls variable-frequency motor, car indoor heat exchanger fan and car outdoor heat exchanger fan and all is in suitable rotating speed, and this moment, system moved under better pattern; When the car indoor temperature drops to a certain scope, the target of control system is that system is worked under the highest Energy Efficiency Ratio, control system makes compressor, car indoor heat exchanger fan and car outdoor heat exchanger fan all be in best rotating speed, and the indoor temperature of car is kept within the specific limits.Under refrigeration mode, the pressure sensor at compressor outlet place is sent into the signal that collects in control system, and too high when pressure at expulsion, in order to protect the parts such as compressor and system not damaged, control system is sent signal makes variable-frequency motor out of service.
When indoor need to the heating of the low car of environment temperature, heat pump type air conditioning system starts, and control system makes the four-way change-over valve energising, and system works under heating mode.The HTHP gaseous working medium of at first being discharged by compressor enters the car indoor heat exchanger through four-way change-over valve, its heat that carries is passed to the indoor air of car, thereby realize heating function, then working medium is entered in the first expansion valve by the 4th check valve, the second check valve, enter the car outdoor heat exchanger under the reducing pressure by regulating flow effect of expansion valve in, working medium will absorb a part of heat from environment this moment, another passage and gas-liquid separator finally by four-way change-over valve are got back in compressor, realize heating circulation.Under heating condition, working medium is without the first check valve, the second expansion valve and the 3rd check valve.
When heat pump type air conditioning system is started working under heating mode, the main target of control system is to improve as early as possible the indoor environment temperature of car, control system is according to the signal of car indoor temperature transmitter and car outdoor temperature sensor, control variable-frequency motor, car indoor heat exchanger fan and car outdoor heat exchanger fan and all be in lower operation at a high speed, this moment, system worked under the pattern of heating capacity maximum; Along with the rising of car indoor temperature, control system will be taken into account the Energy Efficiency Ratio of system, and the rotating speed of variable-frequency motor, car outdoor heat exchanger fan and car indoor heat exchanger fan all is in suitable rotating speed, and this moment, system moved under better pattern; In the time of in the car indoor temperature is elevated to a certain scope, the target of control system is that system is worked under the highest Energy Efficiency Ratio, makes variable-frequency motor, car outdoor heat exchanger fan and car indoor heat exchanger fan be in best rotating speed.Under heating mode, the pressure sensor at compressor outlet place is sent into the signal that collects in control system, and during higher than a certain value, control system is sent signal makes variable-frequency motor out of service when pressure at expulsion.
Beneficial effect
Electric automobile heat-pump air-conditioning system of the present utility model can be realized heating and refrigerating function simultaneously, a part of heat can effectively utilize environment under heating mode in, compare with traditional Electric heating, have Energy Efficiency Ratio higher, do not have the characteristics such as potential safety hazard; And simple in structure, cost is low, and it is convenient to control in the process of using, and energy consumption is low; Simultaneously, the signal that can collect according to car chamber inside/outside temperature sensor, regulate at any time variable-frequency motor and car indoor/rotating speed of external heat exchanger fan, carry out work thereby make system be in optimum operating mode always.
Description of drawings
Fig. 1 is the structural representation of electric automobile heat-pump air-conditioning system of the present utility model;
Fig. 2 be in the specific embodiment electric automobile heat-pump air-conditioning system under refrigeration mode, the flow direction schematic diagram of working medium;
Fig. 3 be in the specific embodiment electric automobile heat-pump air-conditioning system under heating mode, the flow direction schematic diagram of working medium;
Fig. 4 be in the specific embodiment electric automobile heat-pump air-conditioning system when heating mode moves, the relation of car average indoor temperature and time;
Fig. 5 be in the specific embodiment electric automobile heat-pump air-conditioning system when refrigeration mode moves, the relation of car average indoor temperature and time.
label declaration: 1-compressor, the 2-pressure sensor, the 3-four-way change-over valve, 4-car outdoor heat exchanger fan, 5-car outdoor heat exchanger, 6-the first triple valve, 7-the first check valve, 8-the first expansion valve, 9-the second check valve, 10-the second triple valve, 11-the 3rd triple valve, 12-the 3rd check valve, 13-the second expansion valve, 14-the 4th check valve, 15-the 4th triple valve, 16-car indoor heat exchanger, 17-car indoor heat exchanger fan, 18-car indoor temperature transmitter, the 19-control system, the 20-gas-liquid separator, 21-car outdoor temperature sensor, the 22-variable-frequency motor.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model content is described further the purpose of this utility model and advantage in order better to illustrate.
In the electric automobile heat-pump air-conditioning system of the present embodiment, what adopt is the piston-type variable capacity compressors, the car outdoor application be micro-channel heat exchanger, the indoor use of car be fin-tube type heat exchanger, use respectively the expansion valve of two different models under the refrigerating/heating pattern, and use copper pipe and air conditioning hose etc. that each several part is coupled together.
The refrigerating/heating function of native system is to realize by following measure:
steam compression cycle heat pump type air conditioning system based on the variable-frequency motor driving, comprise the 1-compressor, the 2-pressure sensor, the 3-four-way change-over valve, 4-car outdoor heat exchanger fan, 5-car outdoor heat exchanger, 6-the first triple valve, 7-the first check valve, 8-the first expansion valve, 9-the second check valve, 10-the second triple valve, 11-the 3rd triple valve, 12-the 3rd check valve, 13-the second expansion valve, 14-the 4th check valve, 15-the 4th triple valve, 16-car indoor heat exchanger, 17-car indoor heat exchanger fan, 18-car indoor temperature transmitter, the 19-control system, the 20-gas-liquid separator, 21-car outdoor temperature sensor, the 22-variable-frequency motor.The electric automobile heat-pump air-conditioning system that is made of above critical piece as shown in Figure 1.
When system is in refrigeration mode, four-way change-over valve 3 no powers, its inner ac mouth communicates, and the bd mouth communicates, and the flow direction of working medium is as shown in Figure 2.under " suction " effect of compressor 1, gaseous working medium in car indoor heat exchanger 16 enters in compressor 1 through the bd of four-way change-over valve 3 mouth and gas-liquid separator 20, become the gaseous working medium of HTHP after compression, ac mouth by four-way change-over valve 3 enters in car outdoor heat exchanger 5, carry out forced-convection heat transfer with environment under the effect of outdoor heat exchanger fan 4, become the liquid refrigerant of middle temperature, can think at this moment approximate isobaric condensation in car outdoor heat exchanger 5, then working medium is through the first triple valve 6, the first check valve 7, the second triple valve 10, the 3rd triple valve 11, the 3rd check valve 12 enters in the second expansion valve 13, under the reducing pressure by regulating flow effect of the second expansion valve 13, the temperature and pressure of working medium further reduces, become to enter through the 4th check valve 15 after vaporific and carry out evaporation endothermic in car indoor heat exchanger 16, thereby reduce the indoor temperature of car, last working medium is through the bd of four-way change-over valve 3 mouth, gas-liquid separator 20 enters in compressor 1, complete kind of refrigeration cycle.Under this pattern, car outdoor heat exchanger 5 is made condenser and is used, and car indoor heat exchanger 16 is made evaporimeter and used, and working medium does not flow through the first expansion valve 8, the second check valve 9 and the 4th check valve 14.
When system is in heating mode, four-way change-over valve 3 energisings, its inner ab mouth communicates, and the cd mouth communicates, and the flow direction of working medium is as shown in Figure 3.the ab mouth that the HTHP gaseous working medium of at first discharging from compressor 1 passes through four-way change-over valve 3 enters car indoor heat exchanger 16, under the effect of car indoor heat exchanger fan 17, working medium passes to the indoor air of car with the heat that carries, thereby realize the function of heating, then working medium enters the 4th triple valve 15, the 4th check valve 14, the 3rd triple valve 11, the second triple valve 10, the second check valve 9, then enter after the reducing pressure by regulating flow of the first expansion valve 8 and carry out evaporation endothermic in car outdoor heat exchanger 5, heat in environment is brought in system, last under the swabbing action of compressor 1, working medium is got back in compressor 1 through the cd of four-way change-over valve 3 mouth and gas-liquid separator 20, complete and heat circulation.Under this pattern, car outdoor heat exchanger 5 is made evaporimeter and is used, and car indoor heat exchanger 16 is made condenser and used, and working medium does not flow through the first check valve 7, the 3rd check valve 12 and the second expansion valve 13.
Be in the starting stage of refrigerating/heating pattern when system, in order to make the indoor temperature of electric automobile reach as early as possible comfortable scope, this moment, control system was sent control signal to car outdoor heat exchanger fan 4, car indoor heat exchanger fan 17 and variable-frequency motor 22, make its rotating speed the highest, thereby make refrigerating capacity or heating capacity maximum; When the indoor temperature of car reaches certain limit, the target of control system is heat pump type air conditioning system to be under optimum pattern work, and this moment, control system was controlled the rotating speed of variable-frequency motor 22, car outdoor heat exchanger fan 4 and car indoor heat exchanger fan 17 automatically according to the signal of car indoor temperature transmitter 18 and car outdoor temperature sensor 21.When Compressor Discharge Pressure was too high, control system quit work variable-frequency motor, thus protection system.
Electric automobile heat-pump air-conditioning system for variable-frequency motor drives has carried out heating test when environment temperature is 1.6 and 5.5 ℃, carried out refrigeration test when environment temperature is 30.1 ℃ and 36.5 ℃.Under heating mode, the rotating speed of compressor remains on 1700RPM, and car is indoor/and the external heat exchanger fan remains on 2000RPM, and Fig. 4 is car average indoor temperature relation over time.Under refrigeration mode, compressor rotary speed remains on 3400RPM, and car is indoor/and the external heat exchanger fan also remains on 2000RPM, and Fig. 5 is car average indoor temperature relation over time.By Fig. 4 and Fig. 5 as can be known: this system can realize heat-production functions preferably in winter, and can realize preferably refrigerating function summer.
The above is only the preferred embodiment of native system, does not therefore limit protection scope of the present invention, and every equalization of doing according to native system changes and all belongs in the interest field that native system contains with modifying.
Claims (3)
1. the electric automobile heat-pump air-conditioning system that variable-frequency motor drives, is characterized in that: comprise variable-frequency motor, compressor, four-way change-over valve, car outdoor heat exchanger fan, car outdoor heat exchanger, the first expansion valve, the first check valve, the second check valve, the 3rd check valve, the 4th check valve, the second expansion valve, the first triple valve, the second triple valve, the 3rd triple valve, the 4th triple valve, car indoor temperature transmitter, car indoor heat exchanger, car indoor heat exchanger fan, control system, gas-liquid separator, car outdoor temperature sensor and pressure sensor;
The belt wheel of variable-frequency motor is connected by polywedge bet with the belt wheel of compressor; The exhaust outlet of compressor connects the entrance of four-way change-over valve, both in the middle of the setting pressure sensor, the air entry of compressor connects the outlet of gas-liquid separator; Its excess-three mouth of four-way change-over valve is connected with the outlet of car indoor heat exchanger, the outlet of car outdoor heat exchanger and the entrance of gas-liquid separator respectively; The entrance of car outdoor heat exchanger is connected with the first triple valve, two mouthfuls of outlets that connect respectively entrance and first expansion valve of the first check valve of all the other of the first triple valve, entrance with the first expansion valve is connected with the outlet of the second check valve simultaneously, and the entrance of the outlet of the first check valve and the second check valve is connected with two mouthfuls of the second triple valve respectively; The entrance of car indoor heat exchanger is connected with wherein a bite of the 4th triple valve, all the other two mouthfuls are connected with the outlet of the second expansion valve and the entrance of the 4th check valve respectively, the entrance of the second expansion valve is connected with the outlet of the 3rd check valve, the outlet of the entrance of the 3rd check valve and the 4th check valve is connected with two mouthfuls of the 3rd triple valve respectively, the second triple valve is connected with the 3rd triple valve, forms the circuit system of sealing; The pressure sensor at described control system and car outdoor temperature sensor, car indoor temperature transmitter and exhaust outlet of compressor place is connected by shielding line, and its output connects respectively variable-frequency motor, four-way change-over valve, car outdoor heat exchanger fan, car indoor heat exchanger fan.
2. the electric automobile heat-pump air-conditioning system that drives of a kind of variable-frequency motor according to claim 1, it is characterized in that: described control system comprises data acquisition module and object control module; The signal of data collecting module collected car indoor temperature, car outdoor temperature, Compressor Discharge Pressure, and it is sent in control system; Control system generates relevant control signal according to the data that gather, and controls variable-frequency motor, four-way change-over valve, car outdoor heat exchanger fan, car indoor heat exchanger fan, and it is worked under the state of the best.
3. the electric automobile heat-pump air-conditioning system that drives of a kind of variable-frequency motor according to claim 1, it is characterized in that: described the first expansion valve, the second expansion valve are inner equilibrium formula expansion valve, respectively at refrigeration, reducing pressure by regulating flow, adjust flux when heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206595089U CN202938438U (en) | 2012-12-04 | 2012-12-04 | Electric car heat pump air conditioning system driven by variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206595089U CN202938438U (en) | 2012-12-04 | 2012-12-04 | Electric car heat pump air conditioning system driven by variable frequency motor |
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| CN202938438U true CN202938438U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012206595089U Withdrawn - After Issue CN202938438U (en) | 2012-12-04 | 2012-12-04 | Electric car heat pump air conditioning system driven by variable frequency motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980262A (en) * | 2012-12-04 | 2013-03-20 | 北京理工大学 | Electric automobile heat pump air conditioning system driven by variable frequency motor |
| CN105402845A (en) * | 2014-09-05 | 2016-03-16 | 合肥通用制冷设备有限公司 | Method for adjusting air conditioner system |
| CN111855247A (en) * | 2020-07-24 | 2020-10-30 | 奇瑞新能源汽车股份有限公司 | Electric motor car heat pump air conditioner test system and electric automobile heat management test bench |
-
2012
- 2012-12-04 CN CN2012206595089U patent/CN202938438U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980262A (en) * | 2012-12-04 | 2013-03-20 | 北京理工大学 | Electric automobile heat pump air conditioning system driven by variable frequency motor |
| CN102980262B (en) * | 2012-12-04 | 2014-11-12 | 北京理工大学 | Electric automobile heat pump air conditioning system driven by variable frequency motor |
| CN105402845A (en) * | 2014-09-05 | 2016-03-16 | 合肥通用制冷设备有限公司 | Method for adjusting air conditioner system |
| CN105402845B (en) * | 2014-09-05 | 2019-05-14 | 合肥通用制冷设备有限公司 | A kind of adjusting method of air-conditioning system |
| CN111855247A (en) * | 2020-07-24 | 2020-10-30 | 奇瑞新能源汽车股份有限公司 | Electric motor car heat pump air conditioner test system and electric automobile heat management test bench |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130515 Effective date of abandoning: 20141112 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130515 Effective date of abandoning: 20141112 |
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| RGAV | Abandon patent right to avoid regrant |