CN107444071A - Use CO2The pump type heat electric automobile air-conditioning system and its method of work of refrigerant - Google Patents
Use CO2The pump type heat electric automobile air-conditioning system and its method of work of refrigerant Download PDFInfo
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- CN107444071A CN107444071A CN201710656135.7A CN201710656135A CN107444071A CN 107444071 A CN107444071 A CN 107444071A CN 201710656135 A CN201710656135 A CN 201710656135A CN 107444071 A CN107444071 A CN 107444071A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3202—Cooling devices using evaporation, i.e. not including a compressor, e.g. involving fuel or water evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H2001/3286—Constructional features
- B60H2001/3289—Additional cooling source
Abstract
The invention discloses one kind to use CO2The pump type heat electric automobile air-conditioning system and its method of work of refrigerant, the air-conditioning system include the outer cooler of carbon dioxide refrigeration compressor, gas-liquid separator, car, the outer cooler fan of car, regenerator, plate type heat exchanger, water pump, expansion tank, heater cores, evaporator, air blower, two-position three-way valve, electric expansion valve a, electric expansion valve b, magnetic valve a, magnetic valve b, magnetic valve c, magnetic valve d, air door, in-car air flow channel a, in-car air flow channel b, in-car air flow channel c.The present invention solves conventional heat pump type air conditioning for automobiles and uses drawback caused by R134a refrigerants, improves the heating capacity in air-conditioning system winter.
Description
Technical field
It is especially a kind of to use CO the present invention relates to air conditioning for automobiles2The pump type heat electric automobile air-conditioning system of refrigerant and
Its method of work.
Background technology
One of the main flow direction of electric automobile as current development of automobile, there is using energy source diversification, it is quiet pollution-free
The advantages that.Compared with conventional fuel oil automobile, electric automobile does not have the heat utilization of engine, can not use traditional air-conditioning system.
Heat pump is a kind of good solution, has the advantages of efficiency high.
Electric automobile air-conditioning system mainly has the disadvantages that at present：
1st, part electric automobile air-conditioning system, during heating by the way of pure PTC heating, do not save；
2nd, for traditional pump type heat air conditioning for automobiles, refrigerant uses R134a, low in low-temperature heating ability, this low
The low lower heating capacity of temperature is due to that R134a refrigerants physical property determines after all, at relatively low ambient temperatures,
The pressure of inspiration(Pi) of R134a systems is too low, such as when -15 spend, R134a corresponds to saturation pressure 1.64bar, in order to avoid system is true
Sky, suction pressure of compressor control is not less than 1bar, while in order to protect compressor to need to limit pressure of inspiration(Pi), compressor
Rotating speed reduces, and refrigerant flow reduces, and further results in performance step-down；
3rd, R134a refrigerants can produce pollution in use and production process to environment.
At present, the regulation on automotive air-conditioning system emission has been put into effect in European Union and North America, though it is foreseeable that with
The propulsion of related international convention, within the several years, automobile industry will progressively cut down the production and use of HFC class materials.
CO at present2Quite ripe technology is had been provided with as refrigerant, also there is application in air conditioning for automobiles, but mostly
Number is used as refrigeration system, in electric automobile heat-pump air-conditioning, uses CO2Technology as refrigerant is also immature, CO2
It is CO as the shortcomings that refrigerant maximum2With high critical pressure and low critical-temperature (31.1 DEG C of critical-temperature, critical pressure
7.37MPa), technical main difficulty is as follows：
1st, security：CO2As refrigerant, high pressure is too high, especially refrigeration when, high pressure be up to 11MPa~
15MPa, and it is no more than 2Mpa using R134a refrigerant high pressures are maximum in air conditioning for automobiles.If on high-tension side heat exchanger is placed
In in-car, if it happens leak entail dangers to occupant's life.
2nd, the resistance to pressure request of heat exchanging device is high：Air conditioning for automobiles uses parallel-flow heat exchanger as condenser substantially at present, this
Kind heat exchanger has the advantages of exchange capability of heat is strong, small volume, but its pressure-resistant degree is not high, it is difficult to tackle CO2Heat pump
Pressure requirements.
The content of the invention
Goal of the invention：It is an object of the invention to provide one kind to use CO2The pump type heat electric air-conditioning system of refrigerant and its
Method of work, it is intended to solve conventional heat pump type air conditioning for automobiles and use drawback caused by R134a refrigerants, improve the air-conditioning system winter
The heating capacity in season.
To achieve these goals, present invention employs following technical scheme：One kind uses CO2The pump type heat of refrigerant
Cooler outside electric automobile air-conditioning system, including carbon dioxide refrigeration compressor, gas-liquid separator, car, cooler fan outside car,
Regenerator, plate type heat exchanger, water pump, expansion tank, heater cores, evaporator, air blower, two-position three-way valve, electric expansion valve
A, electric expansion valve b, magnetic valve a, magnetic valve b, magnetic valve c, magnetic valve d, air door, in-car air flow channel a, in-car air flow channel
B, in-car air flow channel c；
The suction side of the carbon dioxide refrigeration compressor is connected with one end of regenerator low pressure runner, regenerator lowpressure stream
The other end in road is connected with the outlet of gas-liquid separator, the exhaust outlet of carbon dioxide refrigeration compressor respectively with magnetic valve d one
End, one end of plate type heat exchanger refrigerant flow path are connected, the other end of plate type heat exchanger refrigerant flow path and magnetic valve c one end
It is connected, the magnetic valve d other end is connected with the first port of two-position three-way valve, the second port of two-position three-way valve and gas-liquid separation
The import of device is connected, and the 3rd port of two-position three-way valve is connected with one end of the outer cooler of car, the other end point of the outer cooler of car
One end, electric expansion valve a one end not with magnetic valve a are connected, the magnetic valve a other end, the electric expansion valve a other end point
One end not with regenerator high pressure runner is connected, the other end of regenerator the high pressure runner other end with magnetic valve c, electromagnetism respectively
Valve b one end is connected, and the magnetic valve b other end is connected with electric expansion valve b one end, the electric expansion valve b other end and steaming
One end of hair device is connected, and the other end of evaporator is connected with gas-liquid separator import；
The outlet of the water pump is connected with one end of expansion tank, one end phase of the expansion tank other end and heater cores
Even, the other end of heater cores is connected with one end of plate type heat exchanger cooling water flow conduits, and the one of plate type heat exchanger cooling water flow conduits
End is connected with unit fixed on water pump suction；
The outer cooler fan inlet of the car and car outer space gas phase connect, and pass through cooler fans drive car outer air flow outside car
Cross the outer cooler surface of car；
In-car air flow channel a one end, in-car air flow channel b one end, in-car air flow channel c one end respectively with in-car
Air is connected, and the in-car air flow channel a other end passes through the air door other end with in-car air flow channel b, in-car air stream respectively
The road c other end is connected, and air blower and evaporator are fixed in the car in air flow channel a, and in-car air stream is driven by air blower
Pervaporation device surface, heater cores are fixed in the car in air flow channel b.
The method of work of above-mentioned pump type heat electric automobile air-conditioning system, the method for work include：
When summer needing to freeze to in-car, by controlling throttle opening to make in-car air flow channel a and in-car air
Runner b disconnects, while in-car air flow channel a connects with in-car air flow channel c, the outer cooler fan of opening vehicle, air blower, electromagnetism
Valve a, magnetic valve b, magnetic valve d, switch off the pump, magnetic valve c, pass through successively from the refrigerant of carbon dioxide refrigeration compressor outflow
The outer cooler of magnetic valve d, two-position three-way valve, car, magnetic valve a, the high pressure runner of regenerator, magnetic valve b, electric expansion valve b, steaming
Send out device, gas-liquid separator, regenerator low pressure runner, finally enter carbon dioxide refrigeration compressor, refrigerant flow through it is cold outside car
But condensed during device, the outer air of car is transferred heat in condensation process, refrigerant is evaporated when flowing through evaporator, steamed
The heat in in-car air is absorbed during hair, and then realizes in-car refrigeration；
When winter needing to heat in-car, by controlling throttle opening to make in-car air flow channel a and in-car air
Runner b is connected, while in-car air flow channel a and in-car air flow channel c disconnects, the outer cooler fan of opening vehicle, water pump, air blast
Mechanical, electrical magnet valve c, magnetic valve a, magnetic valve b, magnetic valve d are closed, passed through successively from the refrigerant of carbon dioxide refrigeration compressor outflow
Cross the refrigerant flow path of plate type heat exchanger, magnetic valve c, the high pressure runner of regenerator, electric expansion valve a, car outer cooler, two
Position three-way valve, gas-liquid separator, the low pressure runner of regenerator, finally enter carbon dioxide refrigeration compressor, in expansion tank
Cooling water circulation under water pump effect flows through plate type heat exchanger cooling water flow conduits and heater cores, and refrigerant is flowing through plate-type heat-exchange
Condensed during device, cooling water is transferred heat in condensation process, refrigerant is evaporated when flowing through cooler outside car, is steamed
The heat in the outer air of car is absorbed during hair, cooling water transfers heat to in-car air when flowing through heater cores, entered again
And realize in-car heating；
Needed in winter to when cooler defrosts outside car, by controlling throttle opening to make in-car air flow channel a and car
Interior air flow channel b connection, while in-car air flow channel a and in-car air flow channel c disconnects, the outer cooler fan of opening vehicle, water pump,
Air blower, magnetic valve a, magnetic valve b, magnetic valve c and magnetic valve d, cooling water in the expansion tank recycle stream under water pump effect
Through plate type heat exchanger cooling water flow conduits and heater cores, two-way is first divided into from the refrigerant of carbon dioxide refrigeration compressor outflow,
Refrigerant is another successively by magnetic valve d, two-position three-way valve, car outer cooler, magnetic valve a, the high pressure runner of regenerator all the way
Road refrigerant passes through refrigerant flow path, the magnetic valve c of plate type heat exchanger successively, and then two-way refrigerant converges and passes through magnetic valve
B, the low pressure runner of electric expansion valve b, evaporator, gas-liquid separator, regenerator, finally enters carbon dioxide refrigeration compressor,
Cold-producing medium stream outside car during cooler through being condensed all the way, the outer cooler surface frosting of melting vehicle, another way system in condensation process
Cryogen is condensed when flowing through plate type heat exchanger, and cooling water is transferred heat in condensation process, and refrigerant is flowing through evaporator
When be evaporated, the heat in in-car air is absorbed in evaporation process, cooling water is when flowing through heater cores again by heat transfer
To in-car air, prevent in-car air themperature from reducing；
When winter needing to carry out demisting to in-car, by controlling throttle opening to make in-car air flow channel a and in-car air
Runner b is connected, while in-car air flow channel a and in-car air flow channel c disconnects, the outer cooler fan of opening vehicle, water pump, air blast
Mechanical, electrical magnet valve b, magnetic valve c, magnetic valve a and magnetic valve d is closed, the recycle stream under water pump effect of the cooling water in expansion tank
Through plate type heat exchanger cooling water flow conduits and heater cores, pass through successively from the refrigerant of carbon dioxide refrigeration compressor outflow board-like
It is divided into two-way after the refrigerant flow path of heat exchanger, magnetic valve c, refrigerant is successively by the high pressure runner of regenerator, electronics all the way
Expansion valve a, car outer cooler, two-position three-way valve, gas-liquid separator, the low pressure runner of regenerator, finally enter carbon dioxide system
Cold compressor, another way refrigerant by magnetic valve b, electric expansion valve b, evaporator, gas-liquid separator, finally enter two successively
Carbonoxide refrigeration compressor, all the way refrigerant be evaporated when flowing through cooler outside car, the outer air of car is absorbed in evaporation process
In heat, another way refrigerant is evaporated when flowing through evaporator, and heat in in-car air is absorbed in evaporation process simultaneously
In-car air is dehumidified, refrigerant is condensed when flowing through plate type heat exchanger, is transferred heat in condensation process cold
But water, cooling water transfers heat to in-car air when flowing through heater cores again, and then realizes and in-car air is heated, heating
Drying hot-air afterwards is passed through in-car, removes the water smoke on vehicle window.
Pump type heat electric automobile air-conditioning system of the present invention has advantages below：
1st, the heat pump heating does not need PTC, efficient energy-saving；
2nd, the heat pump is to be directed to CO2Refrigerant designs, environmentally safe, will not be because of the regulation of environmental correclation
It is eliminated；
3rd, solves the shortcomings that traditional R134a refrigerants heating capacity deficiency, the heating capacity under low temperature greatly improves.I.e.
It is under -20 DEG C of environment, can also meets the needs of heating；
4th, the heat pump high-pressure side uses plate type heat exchanger, and resistance to pressure is more preferable, while uses water and refrigerant heat exchanger,
Heat transfer effect is more preferable；
5th, the heat pump high-pressure section heat exchanger is positioned over outside car, and security is good.
Brief description of the drawings
Fig. 1 is the working state schematic representation of pump type heat electric automobile air-conditioning system of the present invention in cooling mode；
Fig. 2 is the working state schematic representation of pump type heat electric automobile air-conditioning system of the present invention in the heat pump mode；
Fig. 3 is working state schematic representation of the pump type heat electric automobile air-conditioning system of the present invention in defrosting mode；
Fig. 4 is working state schematic representation of the pump type heat electric automobile air-conditioning system of the present invention in defogging mode；
In figure：The outer cooler fan of the outer cooler of 1- carbon dioxide refrigeration compressors, 2- gas-liquid separators, 3- cars, 4- cars,
5- regenerators, 6- plate type heat exchangers, 7- water pumps, 8- expansion tanks, 9- heater cores, 10- evaporators, 11- air blowers, 12- two
Position three-way valve, 13- electric expansion valve a, 14- electric expansion valve b, 15- magnetic valve a, 16- magnetic valve b, 17- magnetic valves c, 18-
Magnetic valve d, 19- air door, 20- in-car air flow channel a, 21- in-car air flow channel b, 22- in-car air flow channels c.
Embodiment：
Further explanation is done to the present invention below in conjunction with the accompanying drawings.
As shown in figure 1, one kind of the present invention uses CO2The pump type heat electric automobile air-conditioning system of refrigerant, including dioxy
Change the outer cooler 3 of carbon refrigeration compressor 1, gas-liquid separator 2, car, the outer cooler fan 4 of car, regenerator 5, plate type heat exchanger 6,
Water pump 7, expansion tank 8, heater cores 9, evaporator 10, air blower 11, two-position three-way valve 12, electric expansion valve a13, electronics are swollen
Swollen valve b14, magnetic valve a15, magnetic valve b16, magnetic valve c17, magnetic valve d18, air door 19, in-car air flow channel a20, in-car sky
Flow channel b21, in-car air flow channel c22.
The suction side of the carbon dioxide refrigeration compressor 1 is connected with one end of the low pressure runner of regenerator 5, and regenerator 5 is low
The other end of pressure runner is connected with the outlet of gas-liquid separator 2, the exhaust outlet of carbon dioxide refrigeration compressor 1 respectively with magnetic valve
D18 one end, one end of the refrigerant flow path of plate type heat exchanger 6 is connected, the other end and electromagnetism of the refrigerant flow path of plate type heat exchanger 6
Valve c17 one end is connected, and the magnetic valve d18 other end is connected with the first port of two-position three-way valve 12, two-position three-way valve 12
The import of second port and gas-liquid separator 2 is connected, one end phase of the 3rd port of two-position three-way valve 12 and the outer cooler 3 of car
Even, one end with magnetic valve a15, electric expansion valve a14 one end are connected the other end of the outer cooler 3 of car respectively, magnetic valve
The one end of the a15 other end, the electric expansion valve a14 other end respectively with the high pressure runner of regenerator 5 is connected, the high pressure of regenerator 5
The other end with magnetic valve c17, magnetic valve b16 one end are connected the other end of runner respectively, the magnetic valve b16 other end and
Electric expansion valve b13 one end is connected, and the electric expansion valve b13 other end is connected with one end of evaporator 10, evaporator 10
The other end is connected with the import of gas-liquid separator 2.
The outlet of the water pump 7 is connected with one end of expansion tank 8, one end of the other end of expansion tank 8 and heater cores 9
It is connected, the other end of heater cores 9 is connected with one end of the cooling water flow conduits of plate type heat exchanger 6, the cooling water flow conduits of plate type heat exchanger 6
One end be connected with the import of water pump 7.
The outer import of cooler fan 4 of the car and car outer space gas phase connect, and air outside car is driven by cooler fan 4 outside car
Flow through the outer surface of cooler 3 of car.
In-car air flow channel a20 one end, in-car air flow channel b21 one end, in-car air flow channel c22 one end difference
It is connected with in-car air, the in-car air flow channel a20 other end is another with in-car air flow channel b21 respectively by air door 19
End, the in-car air flow channel c22 other end are connected, and air blower 11 and evaporator 10 are fixed in the car in air flow channel a20, are passed through
Air blower 11 drives the in-car surface of air stream pervaporation device 10, and heater cores 9 are fixed in the car in air flow channel b21.
The pump type heat electric automobile air-conditioning system of agent of the present invention can realize multiple functions, and generally speaking, one shares four kinds
Mode of operation, respectively refrigeration mode, heat pump mode, defrosting mode and defogging mode, refrigeration mode are applied to summer in-car
Refrigeration demand, heat pump mode are applied to winter in-car heating needs, and defrosting mode is applied to removing for the outer cooler 3 of winter car
White operating mode, defogging mode are applied to winter in-car demisting operating mode.
The method of work of the pump type heat electric automobile air-conditioning system of the present invention is as follows：
When summer needing to freeze to in-car, by controlling the aperture of air door 19 to make in-car air flow channel a20 and in-car
Air flow channel b21 disconnects, while in-car air flow channel a20 connects with in-car air flow channel c22, the outer cooler fan 4 of opening vehicle,
Air blower 11, magnetic valve a15, magnetic valve b16, magnetic valve d18, switch off the pump 7, magnetic valve c17, is compressed from carbon dioxide refrigeration
The refrigerant that machine 1 flows out is successively by magnetic valve d18, two-position three-way valve 12, car outer cooler 3, magnetic valve a15, regenerator 5
High pressure runner, magnetic valve b16, electric expansion valve b13, evaporator 10, gas-liquid separator 2, the low pressure runner of regenerator 5, it is most laggard
Enter carbon dioxide refrigeration compressor 1, refrigerant is condensed when flowing through cooler 3 outside car, by heat transfer in condensation process
To air outside car, refrigerant is evaporated when flowing through evaporator 10, and the heat in in-car air is absorbed in evaporation process, and then
Realize in-car refrigeration；
When winter needing to heat in-car, by controlling the aperture of air door 19 to make in-car air flow channel a20 and in-car
Air flow channel b21 is connected, while in-car air flow channel a20 and in-car air flow channel c22 disconnects, the outer cooler fan 4 of opening vehicle,
Water pump 7, air blower 11, magnetic valve c17, magnetic valve a15, magnetic valve b16, magnetic valve d18 are closed, compressed from carbon dioxide refrigeration
The refrigerant that machine 1 flows out successively by the refrigerant flow path of plate type heat exchanger 6, magnetic valve c17, regenerator 5 high pressure runner,
Electric expansion valve a14, car outer cooler 3, two-position three-way valve 12, gas-liquid separator 2, the low pressure runner of regenerator 5, are finally entered
Carbon dioxide refrigeration compressor 1, the circulation under the effect of water pump 7 of cooling water in expansion tank 8 flow through the cooling water of plate type heat exchanger 6
Runner and heater cores 9, refrigerant are condensed when flowing through plate type heat exchanger 6, and cooling is transferred heat in condensation process
Water, refrigerant are evaporated when flowing through cooler 3 outside car, and the heat in the outer air of car is absorbed in evaporation process, and cooling water exists
In-car air is transferred heat to when flowing through heater cores 9 again, and then realizes in-car heating；
When needing to defrost to cooler outside car 3 in winter, or demisting is carried out to in-car, by controlling air door 19
Aperture makes in-car air flow channel a20 be connected with in-car air flow channel b21, while in-car air flow channel a20 and in-car air flow channel
C22 disconnects, opening vehicle outer cooler fan 4, water pump 7, air blower 11, magnetic valve a15, magnetic valve b16, magnetic valve c17 and electricity
Magnet valve d18, the circulation under the effect of water pump 7 of cooling water in expansion tank 8 flow through the cooling water flow conduits of plate type heat exchanger 6 and warm wind
Core body 9, from carbon dioxide refrigeration compressor 1 flow out refrigerant be first divided into two-way, all the way successively by magnetic valve d18, two
Triple valve 12, car outer cooler 3, magnetic valve a15, the high pressure runner of regenerator 5, another way is successively by plate type heat exchanger 6
Refrigerant flow path, magnetic valve c17, then two-way refrigerant converge and pass through magnetic valve b16, electric expansion valve b13, evaporator
10th, the low pressure runner of gas-liquid separator 2, regenerator 5, carbon dioxide refrigeration compressor 1 is finally entered, cold-producing medium stream is through cold outside car
But the melting vehicle outer surface frosting of cooler 3 during device 3, another way cold-producing medium stream during plate type heat exchanger 6 through being condensed, condensation process
In transfer heat to cooling water, refrigerant is evaporated when flowing through evaporator 10, is absorbed in evaporation process in in-car air
Heat, cooling water transfers heat to in-car air when flowing through heater cores 9 again, prevents in-car air themperature from reducing；
When winter needing to carry out demisting to in-car, by controlling the aperture of air door 19 to make in-car air flow channel a20 and in-car
Air flow channel b21 is connected, while in-car air flow channel a20 and in-car air flow channel c22 disconnects, the outer cooler fan 4 of opening vehicle,
Water pump 7, air blower 11, magnetic valve b16, magnetic valve c17, magnetic valve a15 and magnetic valve d18 is closed, the cooling in expansion tank 8
Water circulation under the effect of water pump 7 flows through the cooling water flow conduits of plate type heat exchanger 6 and heater cores 9, from carbon dioxide refrigeration compressor 1
The refrigerant of outflow successively the refrigerant flow path by plate type heat exchanger 6, be divided into two-way after magnetic valve c17, all the way refrigerant according to
It is secondary by cooler 3 outside the high pressure runner of regenerator 5, electric expansion valve a14, car, two-position three-way valve 12, gas-liquid separator 2,
The low pressure runner of regenerator 5, finally enters carbon dioxide refrigeration compressor 1, another way refrigerant successively by magnetic valve b16,
Electric expansion valve b13, evaporator 10, gas-liquid separator 2, finally enter carbon dioxide refrigeration compressor 1, and refrigerant is flowing all the way
The heat in the outer air of car is absorbed through being evaporated outside car during cooler 3, in evaporation process, another way refrigerant is flowing through evaporation
It is evaporated during device 10, the heat in in-car air is absorbed in evaporation process and in-car air is dehumidified, refrigerant is flowing
Through being condensed during plate type heat exchanger 6, cooling water is transferred heat in condensation process, cooling water is when flowing through heater cores 9
In-car air is transferred heat to again, and then realizes and in-car air is heated, and the drying hot-air after heating is passed through in-car, removes
Water smoke on vehicle window.
Generally speaking, pump type heat electric automobile air-conditioning system of the present invention uses CO2As refrigerant, magnetic valve can be passed through
Be used cooperatively, change refrigerant flow direction, allow air-conditioning system work in different modes, with realize refrigeration, heating, demisting,
The difference in functionalitys such as evaporator defrost.
Plate type heat exchanger, car outer cooler, regenerator, the carbon dioxide system of pump type heat electric automobile air-conditioning system of the present invention
Cold compressor and supporting high-pressure exhaust pipe are high voltage component, will be above-mentioned to ensure the security during air-conditioning system use
High voltage component is arranged in outside car, heater cores, evaporator etc., is low pressure components, by above-mentioned low pressure components arrangement in the car.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (2)
1. one kind uses CO2The pump type heat electric automobile air-conditioning system of refrigerant, it is characterised in that：Including carbon dioxide refrigeration pressure
The outer cooler (3) of contracting machine (1), gas-liquid separator (2), car, car outer cooler fan (4), regenerator (5), plate type heat exchanger
(6), water pump (7), expansion tank (8), heater cores (9), evaporator (10), air blower (11), two-position three-way valve (12), electronics
Expansion valve a (13), electric expansion valve b (14), magnetic valve a (15), magnetic valve b (16), magnetic valve c (17), magnetic valve d (18),
Air door (19), in-car air flow channel a (20), in-car air flow channel b (21), in-car air flow channel c (22)；
The suction side of the carbon dioxide refrigeration compressor (1) is connected with one end of regenerator (5) low pressure runner, regenerator (5)
The other end of low pressure runner is connected with the outlet of gas-liquid separator (2), the exhaust outlet of carbon dioxide refrigeration compressor (1) respectively with
Magnetic valve d (18) one end, one end of plate type heat exchanger (6) refrigerant flow path is connected, plate type heat exchanger (6) refrigerant flow path
The other end is connected with the one end of magnetic valve c (17), the first port phase of magnetic valve d (18) other end and two-position three-way valve (12)
Even, the import of the second port and gas-liquid separator (2) of two-position three-way valve (12) is connected, the 3rd port of two-position three-way valve (12)
It is connected with one end of cooler outside car (3), one end with magnetic valve a (15), electronics are swollen respectively for the other end of the outer cooler (3) of car
One end of swollen valve a (14) is connected, magnetic valve a (15) other end, electric expansion valve a (14) other end respectively with regenerator
(5) one end of high pressure runner is connected, the other end of regenerator (5) high pressure runner other end, the electromagnetism with magnetic valve c (17) respectively
Valve b (16) one end is connected, and magnetic valve b (16) other end is connected with electric expansion valve b (13) one end, electric expansion valve b
(13) the other end is connected with the one end of evaporator (10), and the other end of evaporator (10) is connected with gas-liquid separator (2) import；
The outlet of the water pump (7) is connected with one end of expansion tank (8), expansion tank (8) other end and heater cores (9)
One end is connected, and the other end of heater cores (9) is connected with one end of plate type heat exchanger (6) cooling water flow conduits, plate type heat exchanger (6)
One end of cooling water flow conduits is connected with water pump (7) import；
Outer cooler fan (4) import of the car and car outer space gas phase connect, and the outer air of car is driven by cooler fan (4) outside car
Flow through outer cooler (3) surface of car；
One end of in-car air flow channel a (20), in-car air flow channel b (21) one end, in-car air flow channel c (22) one end point
Be not connected with in-car air, the other end of in-car air flow channel a (20) by air door (19) respectively with in-car air flow channel b (21)
The other end, in-car air flow channel c (22) other end be connected, the fixed air stream in the car of air blower (11) and evaporator (10)
In road a (20), in-car air stream pervaporation device (10) surface is driven by air blower (11), heater cores (9) are fixed in the car
In air flow channel b (21).
A kind of 2. method of work of pump type heat electric automobile air-conditioning system described in claim 1, it is characterised in that the method for work
Including：
When summer needing to freeze to in-car, by controlling air door (19) aperture to make in-car air flow channel a (20) and in-car
Air flow channel b (21) disconnects, while in-car air flow channel a (20) connects with in-car air flow channel c (22), the outer cooler of opening vehicle
Fan (4), air blower (11), magnetic valve a (15), magnetic valve b (16), magnetic valve d (18), switch off the pump (7), magnetic valve c
(17), magnetic valve d (18), two-position three-way valve (12), car are passed through successively from the refrigerant of carbon dioxide refrigeration compressor (1) outflow
Outer cooler (3), magnetic valve a (15), the high pressure runner of regenerator (5), magnetic valve b (16), electric expansion valve b (13), evaporation
Device (10), gas-liquid separator (2), regenerator (5) low pressure runner, finally enter carbon dioxide refrigeration compressor (1), refrigerant exists
Condensed when flowing through cooler (3) outside car, the outer air of car is transferred heat in condensation process, refrigerant is flowing through evaporator
(10) it is evaporated when, the heat in in-car air is absorbed in evaporation process, and then realizes in-car refrigeration；
When winter needing to heat in-car, by controlling air door (19) aperture to make in-car air flow channel a (20) and in-car
Air flow channel b (21) is connected, while in-car air flow channel a (20) disconnects with in-car air flow channel c (22), the outer cooler of opening vehicle
Fan (4), water pump (7), air blower (11), magnetic valve c (17), close magnetic valve a (15), magnetic valve b (16), magnetic valve d
(18), refrigerant flow path, the electricity of plate type heat exchanger (6) are passed through successively from the refrigerant of carbon dioxide refrigeration compressor (1) outflow
Magnet valve c (17), the high pressure runner of regenerator (5), electric expansion valve a (14), car outer cooler (3), two-position three-way valve (12), gas
The low pressure runner of liquid/gas separator (2), regenerator (5), finally enters carbon dioxide refrigeration compressor (1), in expansion tank (8)
Cooling water circulation under water pump (7) effect flows through plate type heat exchanger (6) cooling water flow conduits and heater cores (9), and refrigerant is flowing
Through being condensed when plate type heat exchanger (6), cooling water is transferred heat in condensation process, refrigerant is flowing through cooler outside car
(3) it is evaporated when, the heat in the outer air of car is absorbed in evaporation process, cooling water is when flowing through heater cores (9) again by heat
Amount passes to in-car air, and then realizes in-car heating；
When needing to defrost to cooler outside car (3) in winter, by controlling air door (19) aperture to make in-car air flow channel a
(20) connected with in-car air flow channel b (21), while in-car air flow channel a (20) disconnects with in-car air flow channel c (22), opens
Car outer cooler fan (4), water pump (7), air blower (11), magnetic valve a (15), magnetic valve b (16), magnetic valve c (17) and electricity
Magnet valve d (18), the circulation under water pump (7) effect of cooling water in expansion tank (8) flow through plate type heat exchanger (6) cooling water flow conduits
With heater cores (9), two-way is first divided into from the refrigerant of carbon dioxide refrigeration compressor (1) outflow, refrigerant passes through successively all the way
Magnetic valve d (18), two-position three-way valve (12), car outer cooler (3), magnetic valve a (15), the high pressure runner of regenerator (5) are crossed, separately
Refrigerant passes through refrigerant flow path, the magnetic valve c (17) of plate type heat exchanger (6) successively all the way, and then two-way refrigerant converges simultaneously
By magnetic valve b (16), electric expansion valve b (13), evaporator (10), gas-liquid separator (2), regenerator (5) low pressure runner,
Carbon dioxide refrigeration compressor (1) is finally entered, cold-producing medium stream when cooler outside car (3) through being condensed all the way, condensation process
Outer cooler (3) the surface frosting of middle melting vehicle, another way cold-producing medium stream when plate type heat exchanger (6) through being condensed, condensation process
In transfer heat to cooling water, refrigerant is evaporated when flowing through evaporator (10), and in-car air is absorbed in evaporation process
In heat, cooling water transfers heat to in-car air again when flowing through heater cores (9), prevents in-car air themperature from dropping
It is low；
When winter needing to carry out demisting to in-car, by controlling air door (19) aperture to make in-car air flow channel a (20) and in-car
Air flow channel b (21) is connected, while in-car air flow channel a (20) disconnects with in-car air flow channel c (22), the outer cooler of opening vehicle
Fan (4), water pump (7), air blower (11), magnetic valve b (16), magnetic valve c (17) close magnetic valve a (15) and magnetic valve d
(18), the circulation under water pump (7) effect of the cooling water in expansion tank (8) flows through plate type heat exchanger (6) cooling water flow conduits and warmed up
Wind core body (9), pass through the cold-producing medium stream of plate type heat exchanger (6) successively from the refrigerant of carbon dioxide refrigeration compressor (1) outflow
Road, magnetic valve c are divided into two-way after (17), and refrigerant is successively by the high pressure runner of regenerator (5), electric expansion valve a all the way
(14), car outer cooler (3), two-position three-way valve (12), gas-liquid separator (2), the low pressure runner of regenerator (5), is finally entered
Carbon dioxide refrigeration compressor (1), another way refrigerant is successively by magnetic valve b (16), electric expansion valve b (13), evaporator
(10), gas-liquid separator (2), carbon dioxide refrigeration compressor (1) is finally entered, refrigerant is flowing through cooler outside car all the way
(3) it is evaporated when, the heat in the outer air of car is absorbed in evaporation process, another way refrigerant enters when flowing through evaporator (10)
Row evaporates, and absorbs the heat in in-car air in evaporation process and in-car air is dehumidified, refrigerant is flowing through board-like change
Condensed during hot device (6), cooling water is transferred heat in condensation process, cooling water again will when flowing through heater cores (9)
Heat transfer gives in-car air, and then realizes and in-car air is heated, and the drying hot-air after heating is passed through in-car, removes vehicle window
On water smoke.
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| CN201710656135.7A CN107444071B (en) | 2017-08-03 | 2017-08-03 | Using CO 2 Heat pump type electric automobile air conditioning system of refrigerant and working method thereof |
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| CN107444071B CN107444071B (en) | 2023-06-09 |
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Address after: No. 389 Kening Road, Science Park, Jiangning District, Nanjing City, Jiangsu Province, 210000 Applicant after: Xiezhong International Thermal Management System (Jiangsu) Co.,Ltd. Applicant after: Liaoning Chenyou Automobile Air-Conditioning System Co.,Ltd. Address before: No.389, Kening Road, Science Park, Jiangning District, Nanjing City, Jiangsu Province, 211100 Applicant before: NANJING XIEZHONG AUTO-AIRCONDITIONER (COMPANY) Co.,Ltd. Applicant before: Liaoning Chenyou Automobile Air-Conditioning System Co.,Ltd. |
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