CN208978588U - The heat pump air conditioning system of electric car - Google Patents
The heat pump air conditioning system of electric car Download PDFInfo
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- CN208978588U CN208978588U CN201821443985.5U CN201821443985U CN208978588U CN 208978588 U CN208978588 U CN 208978588U CN 201821443985 U CN201821443985 U CN 201821443985U CN 208978588 U CN208978588 U CN 208978588U
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Abstract
The utility model provides a kind of heat pump air conditioning system of electric car, belongs to field of automobile air conditioner.It solves the problems, such as that the suitability of existing electric automobile heat-pump air-conditioning system is bad.The heat pump air conditioning system of this electric car, including compressor, outdoor heat exchanger, indoor evaporator, media heat exchanger, warm wind machine core, gas-liquid separator, the first electric expansion valve, the second electric expansion valve and the first check valve, the media heat exchanger is double-deck refrigerant-cooling liquid heat exchanger, and the refrigerant-cooling liquid heat exchanger includes refrigerant layer and flowing coating of cooling liquid.The utility model reduces the design difficulty and preparation cost of air-conditioning assembly, improves the suitability of heat pump air conditioning system, while simplifying heat pump system structure, is conducive to the stability for reducing loss, enhancing system.
Description
Technical field
The utility model belongs to automobile air conditioning technology field, and in particular to a kind of heat pump air conditioning system of electric car.
Background technique
Electric car cannot be generallyd use heat pump air conditioning system, can satisfy vehicle using engine prewarming as heating source
A large amount of energy consumption is saved simultaneously for the demand of warm refrigeration in room.However, the structure of existing heat pump air conditioning system is complex, such as one
As use multiple outdoor heat exchangers in parallel or series, cause front-end module windage larger, influence the use of air-conditioning system
Effect.
Chinese patent (application number 201610305666.7) discloses a kind of heat pump air conditioning system and electric car, the heat
Pump air conditioner system includes compressor, indoor condenser, indoor evaporator and outdoor heat exchanger, and the outlet of the compressor is in described
The entrance of indoor condenser is connected to, the egress selection of the outdoor heat exchanger via the second through-flow branch and the compressor
Entrance connection or be connected to via the second throttling branch with the entrance of the indoor evaporator, the outlet of the indoor evaporator and
The entrance of the compressor is connected to.The functions such as heating, the defrosting and defogging of electric vehicle are realized using an outdoor heat exchanger, are reduced
The windage of front-end module.
Although the technical solution simplifies system structure to a certain extent, there is also following disadvantages: first, the heat pump
More pipeline and valve are used on the pipeline of air-conditioning system, so that system loss increase, bad stability.Second, it uses
Indoor condenser needs to readjust the casing structure in air-conditioning assembly, increases the design difficulty of air-conditioning assembly and is prepared into
This, at the same it is poor with the suitability of different automobile types.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of heat pump of electric car
Air-conditioning system, the technical problem to be solved by the utility model is to how to improve the suitability and stability of heat pump air conditioning system.
The purpose of this utility model can be realized by the following technical scheme: including compressor, outdoor heat exchanger, indoor steaming
Hair device, media heat exchanger, warm wind machine core, gas-liquid separator, the first electric expansion valve and the second electric expansion valve, feature exist
In the heat pump air conditioning system further includes the first check valve, and the media heat exchanger is double-deck refrigerant-coolant liquid heat exchange
Device, the refrigerant-cooling liquid heat exchanger include refrigerant layer and flowing coating of cooling liquid, and the flowing coating of cooling liquid and the warm wind machine core pass through
Coolant duct is in turn connected to form closed circuit；It is the compressor, the outdoor heat exchanger, first check valve, described
Second electric expansion valve, the indoor evaporator and the gas-liquid separator are in turn connected to form by refrigerant pipe and are closed back
Road；Refrigerant pipeline between the compressor and the outdoor heat exchanger is equipped with the first solenoid valve；The entrance of the refrigerant layer
By refrigerant pipe with the outlet of the compressor, the outlet of the refrigerant layer is unidirectional with described first by refrigerant pipe
Pipeline connection between valve and second electric expansion valve；The first electric expansion valve is parallel on first check valve.
Media heat exchanger is used when heating circulation, and is formed between warm wind machine core and the flowing coating of cooling liquid of media heat exchanger
Closed circuit (i.e. coolant circuit) makes coolant liquid absorb the heat for flowing through the refrigerant of media heat exchanger refrigerant layer, then by heat
It is delivered to the warm wind machine core of air-conditioning assembly, realizes the heating in passenger cabin.Since warm wind machine core is that the included of air-conditioning assembly sets
It is standby, while media heat exchanger occupied space is smaller, there is no need to adjust again to the casing structure in air-conditioning assembly, using Jie
Coolant liquid circulation loop between the refrigerant floor and flowing coating of cooling liquid and warm wind machine core of matter heat exchanger substitutes room in the prior art
Inner condenser reduces the design difficulty and preparation cost of air-conditioning assembly, improves the versatility of heat pump air conditioning system.In addition,
Being connected in parallel for first electric expansion valve and the first check valve, can realize respectively: opening the first solenoid valve in refrigeration cycle, close
The first electric expansion valve is closed, refrigerant successively passes through the first solenoid valve, outdoor heat exchanger, the first check valve stream after compressor outflow
To indoor evaporator, when heating circulation, closes the first solenoid valve, opens the first electric expansion valve, refrigerant after compressor outflow according to
It is secondary to flow to outdoor heat exchanger by refrigerant layer, the first electric expansion valve of media heat exchanger, to realize the double of outdoor heat exchanger
To circulation, the heat exchange efficiency of outdoor heat exchanger is improved, while reducing heat/cooling cycle system pipeline and valve, is simplified
Heat pump system structure is conducive to the stability for reducing loss, enhancing system.Also, refrigerant is changed without medium when refrigeration cycle
Hot device shortens path and flow resistance that refrigerant flows through, improves the refrigeration performance and stability of heat pump air conditioning system.
In the heat pump air conditioning system of above-mentioned electric car, the heat pump air conditioning system further includes water pump, the water pump
Outlet be connected to by coolant duct with the entrance of the flowing coating of cooling liquid, the entrance of the water pump passes through the same institute of coolant duct
State the outlet of warm wind machine core.The supply and reflux that coolant liquid in coolant liquid closed circuit is realized using water pump, are conducive to protect
The circulation for hindering coolant liquid, to improve the stability of heat pump air conditioning system.
In the heat pump air conditioning system of above-mentioned electric car, the heat pump air conditioning system further includes kettle, the kettle
Entrance by coolant duct with the outlet of the flowing coating of cooling liquid, the outlet of the kettle passes through the same institute of coolant duct
State the entrance connection of water pump.When the cooling water of water pump is inadequate, kettle can be used for supplementing liquid, anyway water pump exhaust can make water
Excessive water flow is pumped to store to kettle.
Refrigerant pipeline in the heat pump air conditioning system of above-mentioned electric car, between the compressor and the refrigerant layer
It is equipped with second solenoid valve.Second solenoid valve is closed when refrigeration cycle, opens the first solenoid valve, is flowed to convenient for refrigerant from compressor
Outdoor heat exchanger, and guarantee that refrigerant will not branch to the refrigerant layer of media heat exchanger, be conducive to improve heat pump air conditioning system
Heat exchange efficiency and stability.
In the heat pump air conditioning system of above-mentioned electric car, the heat pump air conditioning system further includes battery cooler bin, institute
The entrance for stating battery cooler bin passes through outlet of the refrigerant pipe with first check valve, the outlet of the battery cooler bin
It is connected to by refrigerant pipe with the entrance of the gas-liquid separator, the refrigerant pipeline of the battery cooler bin arrival end is equipped with the
Three electric expansion valves.When refrigeration cycle, third electric expansion valve is opened, the refrigerant flowed out from outdoor heat exchanger can be made by first
Third electric expansion valve is flowed to after check valve subsequently into battery cooler bin, realizes the cooling cycle of battery cooler bin.System
When thermal cycle, third electric expansion valve and the second electric expansion valve are closed, can ensure to go out from the refrigerant laminar flow of media heat exchanger
Refrigerant flows to the first electric expansion valve subsequently into outdoor heat exchanger, will not branch to battery cooler bin, to ensure that outdoor is changed
The heat exchange efficiency of hot device improves the stability of heat pump air conditioning system.
In the heat pump air conditioning system of above-mentioned electric car, between the indoor evaporator and the gas-liquid separator
Refrigerant pipeline is equipped with second one-way valve, the entrance of the second one-way valve with the indoor evaporator outlet, it is described
The outlet of second one-way valve is connected to the entrance of the gas-liquid separator.Refrigerant is from electricity when second one-way valve can prevent refrigeration cycle
Pond cooler bin adverse current reduces thermal loss when indoor evaporator uses, to improve heat pump air conditioning system to indoor evaporator
Stability.
In the heat pump air conditioning system of above-mentioned electric car, the heat pump air conditioning system further includes third solenoid valve, institute
The one end for stating third solenoid valve passes through refrigerant pipeline with the refrigerant pipeline between first solenoid valve and the outdoor heat exchanger
Connection, the other end are connected to by refrigerant pipeline with the entrance of the gas-liquid separator.Third solenoid valve is closed when refrigeration cycle, it can
Prevent the refrigerant flowed out from compressor from branching to gas-liquid separator after the first solenoid valve, to ensure changing for outdoor heat exchanger
The thermal efficiency improves the stability of heat pump air conditioning system.
Compared with prior art, the heat pump air conditioning system of this electric car has the advantage that
1, it is replaced using the coolant liquid circulation loop between the refrigerant layer and flowing coating of cooling liquid of media heat exchanger and warm wind machine core
For indoor condenser in the prior art, the design difficulty and preparation cost of air-conditioning assembly are reduced, heat pump air conditioner system is improved
The versatility of system.
2, the first electric expansion valve and the first check valve are connected in parallel, and are realized two-way circulating for outdoor heat exchanger, are improved
The heat exchange efficiency of outdoor heat exchanger, while reducing heat/cooling cycle system pipeline and valve, simplify heat pump system knot
Structure is conducive to the stability for reducing loss, enhancing system.Also, refrigerant shortens cold without media heat exchanger when refrigeration cycle
The refrigeration performance and stability of heat pump air conditioning system are improved in the path and flow resistance that matchmaker flows through.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
In figure, 1, compressor；2, second solenoid valve；3, the first solenoid valve；4, warm wind machine core；5, outdoor heat exchanger；6,
One check valve；7, the first electric expansion valve；8, the second electric expansion valve；9, third solenoid valve；10, third electric expansion valve；11,
Indoor evaporator；12, battery cooler bin；13, second one-way valve；14, gas-liquid separator；15, media heat exchanger；16, kettle；
17, water pump.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, the utility model embodiment includes that compressor 1, outdoor heat exchanger 5, indoor evaporator 11, medium change
Hot device 15, warm wind machine core 4, gas-liquid separator 14, the first electric expansion valve 7, the second electric expansion valve 8 and the first check valve 6 are situated between
Matter heat exchanger 15 is double-deck refrigerant-cooling liquid heat exchanger, and refrigerant-cooling liquid heat exchanger includes refrigerant layer and coolant liquid
Layer.
Flowing coating of cooling liquid and warm wind machine core 4 are in turn connected to form closed circuit by coolant duct.Compressor 1, outdoor are changed
Hot device 5, the first check valve 6, the second electric expansion valve 8, indoor evaporator 11 and gas-liquid separator 14 pass through refrigerant pipe successively
Connection forms closed circuit.Refrigerant pipeline between compressor 1 and outdoor heat exchanger 5 is equipped with the first solenoid valve 3.Refrigerant layer
Entrance is by refrigerant pipe with the outlet of compressor 1, and the outlet of refrigerant layer is by refrigerant pipe with the first check valve 6 and the
Pipeline connection between two electric expansion valves 8.The first electric expansion valve 7 is parallel on first check valve 6.
The present embodiment further includes water pump 17, and the outlet of water pump 17 is connected to by coolant duct with the entrance of flowing coating of cooling liquid,
The entrance of water pump 17 is by coolant duct with the outlet of warm wind machine core 4.
The present embodiment further includes kettle 16, the entrance of kettle 16 by coolant duct with the outlet of flowing coating of cooling liquid,
The outlet of kettle 16 is connected to by coolant duct with 17 entrance of water pump.
Refrigerant pipeline between compressor 1 and refrigerant layer is equipped with second solenoid valve 2.
The present embodiment further includes battery cooler bin 12, and the entrance of battery cooler bin 12 is by refrigerant pipe with the first check valve
The outlet of 6 outlet, battery cooler bin 12 is connected to by refrigerant pipe with the entrance of gas-liquid separator 14, battery cooler bin
The refrigerant pipeline of 12 arrival ends is equipped with third electric expansion valve 10.
Refrigerant pipeline between indoor evaporator 11 and gas-liquid separator 14 is equipped with second one-way valve 13, second one-way valve
With the outlet of indoor evaporator 11, the outlet of second one-way valve 13 is connected to 13 entrance with the entrance of gas-liquid separator 14.
The present embodiment further includes third solenoid valve 9, and one end of third solenoid valve 9 is by refrigerant pipeline with the first solenoid valve 3
Refrigerant pipeline connection between outdoor heat exchanger 5, the other end are connected to by refrigerant pipeline with the entrance of gas-liquid separator 14.
When heating circulation, the first solenoid valve 3, the first electric expansion valve 7, the second electric expansion valve 8 and third electronics are closed
Expansion valve 10, opens second solenoid valve 2 and third solenoid valve 9, refrigerant are changed from compressor 1 followed by second solenoid valve 2, medium
Pressure is returned after the refrigerant layer of hot device 15, the first electric expansion valve 7, outdoor heat exchanger 5, third solenoid valve 9, gas-liquid separator 14
Contracting machine 1；Coolant liquid returns water pump after the flowing coating of cooling liquid of media heat exchanger 15, warm wind machine core 4 from water pump 17 simultaneously
17。
When dehumidifying circulation, the first solenoid valve 3, the first electric expansion valve 7 and third electric expansion valve 10 are closed, opens second
Solenoid valve 2 and the second electric expansion valve 8, refrigerant from compressor 1 followed by second solenoid valve 2, media heat exchanger refrigerant layer,
Compressor 1 is returned after second electric expansion valve 8, indoor evaporator 11, second one-way valve 13, gas-liquid separator 14.
When refrigeration cycle, second solenoid valve 2, third solenoid valve 9 and the first electric expansion valve are closed, opens the first solenoid valve
3, the second electric expansion valve 8 and third electric expansion valve 10, refrigerant is from compressor 1 followed by the first solenoid valve 3, outdoor heat exchange
Be split into two-way after device 5 and the first check valve 6, all the way through the second electric expansion valve 8, indoor evaporator 11, second one-way valve 13,
Compressor 1 is returned after gas-liquid separator 14, completes passenger cabin refrigeration, another way is through third electric expansion valve 10, battery
Compressor 1 is returned after cooler bin 12, gas-liquid separator 14, and it is cooling to complete battery.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (7)
1. a kind of heat pump air conditioning system of electric car, including compressor (1), outdoor heat exchanger (5), indoor evaporator (11),
Media heat exchanger (15), warm wind machine core (4), gas-liquid separator (14), the first electric expansion valve (7) and the second electric expansion valve
(8) it is characterized in that, the heat pump air conditioning system further includes the first check valve (6), the media heat exchanger (15) is double-deck
Refrigerant-cooling liquid heat exchanger, the refrigerant-cooling liquid heat exchanger include refrigerant layer and flowing coating of cooling liquid；The flowing coating of cooling liquid
Closed circuit is in turn connected to form by coolant duct with the warm wind machine core (4)；The compressor (1), the outdoor are changed
Hot device (5), first check valve (6), second electric expansion valve (8), the indoor evaporator (11) and the gas-liquid
Separator (14) is in turn connected to form closed circuit by refrigerant pipe；The compressor (1) and the outdoor heat exchanger (5) it
Between refrigerant pipeline be equipped with the first solenoid valve (3)；The entrance of the refrigerant layer is by refrigerant pipe with the compressor (1)
Outlet, the outlet of the refrigerant layer is by refrigerant pipe with first check valve (6) and second electric expansion valve
(8) pipeline connection between；The first electric expansion valve (7) are parallel on first check valve (6).
2. the heat pump air conditioning system of electric car according to claim 1, which is characterized in that the heat pump air conditioning system is also
Including water pump (17), the outlet of the water pump (17) is connected to by coolant duct with the entrance of the flowing coating of cooling liquid, the water
Pump outlet of the entrance of (17) by coolant duct with the warm wind machine core (4).
3. the heat pump air conditioning system of electric car according to claim 2, which is characterized in that the heat pump air conditioning system is also
Including kettle (16), the entrance of the kettle (16) passes through outlet of the coolant duct with the flowing coating of cooling liquid, the water
The outlet of pot (16) is connected to by coolant duct with the entrance of the water pump (17).
4. the heat pump air conditioning system of electric car according to claim 1, which is characterized in that the compressor (1) and institute
The refrigerant pipeline stated between refrigerant layer is equipped with second solenoid valve (2).
5. the heat pump air conditioning system of electric car according to claim 1, which is characterized in that the heat pump air conditioning system is also
Including battery cooler bin (12), the entrance of the battery cooler bin (12) is by refrigerant pipe with first check valve (6)
The outlet of outlet, the battery cooler bin (12) is connected to by refrigerant pipe with the entrance of the gas-liquid separator (14),
The refrigerant pipeline of battery cooler bin (12) arrival end is equipped with third electric expansion valve (10).
6. the heat pump air conditioning system of electric car according to claim 5, which is characterized in that the indoor evaporator (11)
Refrigerant pipeline between the gas-liquid separator (14) is equipped with second one-way valve (13), and second one-way valve (13) enter
Mouth is with the outlet of the indoor evaporator (11), and the outlet of the second one-way valve (13) is the same as the gas-liquid separator (14)
Entrance connection.
7. the heat pump air conditioning system of electric car according to claim 1, which is characterized in that the heat pump air conditioning system is also
Including third solenoid valve (9), one end of the third solenoid valve (9) is by refrigerant pipeline with first solenoid valve (3) and institute
The refrigerant pipeline connection between outdoor heat exchanger (5) is stated, the other end passes through refrigerant pipeline entering with the gas-liquid separator (14)
Mouth connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821443985.5U CN208978588U (en) | 2018-09-04 | 2018-09-04 | The heat pump air conditioning system of electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821443985.5U CN208978588U (en) | 2018-09-04 | 2018-09-04 | The heat pump air conditioning system of electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208978588U true CN208978588U (en) | 2019-06-14 |
Family
ID=66783273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821443985.5U Active CN208978588U (en) | 2018-09-04 | 2018-09-04 | The heat pump air conditioning system of electric car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208978588U (en) |
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2018
- 2018-09-04 CN CN201821443985.5U patent/CN208978588U/en active Active
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