CN209365839U - A kind of car air-conditioner and automobile - Google Patents
A kind of car air-conditioner and automobile Download PDFInfo
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- CN209365839U CN209365839U CN201822204871.1U CN201822204871U CN209365839U CN 209365839 U CN209365839 U CN 209365839U CN 201822204871 U CN201822204871 U CN 201822204871U CN 209365839 U CN209365839 U CN 209365839U
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- heat exchanger
- refrigerant
- car air
- compressor
- conditioner
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Abstract
The utility model discloses a kind of car air-conditioner and automobiles, belong to air-conditioning technical field, car air-conditioner includes refrigerant circuit and refrigerating medium loop, refrigerant circuit includes the compressor that circuit is in turn connected to form by pipeline, condenser assembly, external heat exchanger, restricting element and Intermediate Heat Exchanger, there are two paths in external heat exchanger, wherein an access is connected to condenser assembly and restricting element, and another access is connected to Intermediate Heat Exchanger and compressor；Refrigerating medium loop includes the infusion mechanism that circuit is in turn connected to form by pipeline, interior heat exchanger and Intermediate Heat Exchanger.The utility model passes through setting external heat exchanger, when the car air-conditioner is in refrigerating state, the progress heat exchange of the liquid refrigerant in external heat exchanger is flowed by condenser assembly in external heat exchanger by the gaseous state of Intermediate Heat Exchanger outflow or the refrigerant of gas-liquid mixed, so that enter the refrigerant of compressor after external heat exchanger becomes gaseous state completely, it avoids causing liquid hammer to compressor, guarantees the normal work of compressor.
Description
Technical field
The utility model relates to air-conditioning technical field more particularly to a kind of car air-conditioners and automobile
Background technique
Air-conditioning is that one of the system of highly energy-consuming in electric car needs one to improve the duration performance of whole electric vehicle
Kind low GWP value, high refrigeration COP, heat pump performance is good, cheap novel environment-friendly refrigerant come substitute existing R134A and
Therefore R124YF is more concerned about the refrigerant for the low DWP that research R290 is representative, but these refrigerants have at present in industry
Combustible refrigerant is applied to the maximum combustible refrigerant for being a risk that leakage of air conditioning system for vehicle certain by combustibility
It is easy to be ignited explosion in concentration range, endangers the safety of driver and passenger.
In order to avoid the above problem, car air-conditioner in the prior art is recycled back to using refrigerant circulation loop and refrigerating medium
Road, refrigerant recycle outside crew module, and refrigerating medium recycles in crew module, and refrigerating medium and refrigerant pass through Intermediate Heat Exchanger
Heat exchange is carried out, so that leakage of refrigerant be avoided to endanger the safety of driver and passenger.But the system in refrigerant circulation loop
Cryogen flows directly back into compressor after Intermediate Heat Exchanger, wherein liquid refrigerant that may be present can generate liquid hammer to compressor
Phenomenon influences the normal work of compressor, or even can damage compressor.
Utility model content
The purpose of this utility model is to provide a kind of car air-conditioners, to realize that refrigerant enters compressor with pure gaseous state
It is interior, it prevents from causing liquid hammer to compressor, influences the normal work of compressor.
As above design, the technical scheme adopted by the utility model is
A kind of car air-conditioner, comprising:
Refrigerant circuit, including be in turn connected to form by pipeline the compressor in circuit, condenser assembly, external heat exchanger,
Restricting element and Intermediate Heat Exchanger are provided with two paths in the external heat exchanger, one of them described access is connected to described
Condenser assembly and the restricting element, another described access are connected to the Intermediate Heat Exchanger and the compressor；
Refrigerating medium loop, infusion mechanism, interior heat exchanger and the centre including being in turn connected to form circuit by pipeline
Heat exchanger.
Further, the restricting element is electric expansion valve.
Further, the external heat exchanger includes shell and heat exchanger tube, and the heat exchanger tube is set in the shell, and institute
Heat exchanger tube both ends are stated to stretch out outside the shell.
Further, the shell both ends are respectively arranged with the first inlet pipe and the first outlet pipe for being connected to the enclosure interior,
First inlet pipe is connected to the condenser assembly, and first outlet pipe is connected to the Intermediate Heat Exchanger.
Further, the heat exchanger tube both ends are respectively arranged with the second inlet pipe stretched out outside the shell and the second outlet pipe,
Second inlet pipe is connected to the Intermediate Heat Exchanger, and second outlet pipe is connected to the compressor.
Further, the car air-conditioner further includes electric heater and control system, and the electric heater is located at the load
Refrigerant circuit side, and it is connected to the control system, the control system is connected to the compressor and the condenser is total
At.
To achieve the above object, the utility model additionally provides a kind of automobile, including car air-conditioner described above.
The utility model has the following beneficial effects:
The utility model proposes car air-conditioner, by the way that external heat exchanger is arranged in refrigerant circuit, at the car air-conditioner
When refrigerating state, by the gaseous state or gas-liquid mixed refrigerant of Intermediate Heat Exchanger outflow in external heat exchanger and by condenser assembly
The liquid refrigerant being flowed into external heat exchanger carries out heat exchange, so that entering the refrigerant of compressor after external heat exchanger
Become gaseous state completely, avoid causing liquid hammer to compressor, guarantee the normal work of compressor, and is flowed by condenser assembly outer
Liquid refrigerant in heat exchanger is further subcooled, and can effectively improve COP (the Coefficient Of of the car air-conditioner
Performance, coefficient of refrigerating performance), improve the refrigerating capacity of the car air-conditioner.
The utility model proposes automobile, have above-mentioned car air-conditioner, can prevent liquid refrigerant from causing to compressor
Liquid hammer improves the refrigeration effect to crew module, while preventing refrigerant to enter in vehicle occupant compartment and jeopardizing occupant safety and be good for
Health.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of car air-conditioner provided by the utility model；
Fig. 2 is the pressure-enthalpy chart of car air-conditioner provided by the utility model Yu car air-conditioner in the prior art.
Fig. 3 is the perspective view of external heat exchanger provided by the utility model；
In figure:
1, refrigerant circuit；11, compressor；12, condenser assembly；13, external heat exchanger；131, shell；1311, first into
Pipe；1312, the first outlet pipe；132, heat exchanger tube；1321, the second outlet pipe；1322, the second inlet pipe；14, restricting element；15, centre is changed
Hot device；
2, refrigerating medium loop；21, interior heat exchanger；22, infusion mechanism；
3, electric heater；
4, crew module.
Specific embodiment
The technical issues of to solve the utility model, the technical solution of use and the technical effect that reaches are clearer,
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.It is understood that
Specific embodiment described herein is used only for explaining the utility model, rather than the restriction to the utility model.In addition it also needs
It is noted that illustrating only part relevant to the utility model for ease of description, in attached drawing and not all.
Fig. 1 is the structural schematic diagram of car air-conditioner provided in this embodiment.As shown in Figure 1, provided in this embodiment automobile-used
Air-conditioning is mainly used in the automobiles such as car, car, and certain car air-conditioner applies also for the occasions such as house, workshop.This is automobile-used
Air-conditioning includes refrigerant circuit 1 and refrigerating medium loop 2.Wherein fill in refrigerant circuit 1 equipped with the refrigerants such as R290, R32, refrigerating
It is filled in agent circuit 2 equipped with refrigerating mediums such as water, water and ethylene glycol mixed solutions, and refrigerating medium loop 2 is located in crew module 4, is freezed
Agent circuit 1 is located at outside crew module 4, is entered in crew module 4 when can reveal to avoid refrigerant, endanger member safety and
Health.
Specifically, refrigerant circuit 1 includes compressor 11, the condenser assembly for being in turn connected to form circuit by pipeline
12, restricting element 14, external heat exchanger 13 and Intermediate Heat Exchanger 15.Wherein, Intermediate Heat Exchanger 15 is evaporator.In external heat exchanger 13
Two paths are provided with, one of access is connected to condenser assembly 12 and restricting element 14, during another access is connected to
Between heat exchanger 15 and compressor 11.It is distinguished for the ease of the two paths to external heat exchanger 13, it is total by condenser is connected to
It is named as the first access at the access of 12 and restricting element 14, the access for being connected to Intermediate Heat Exchanger 15 and compressor 11 is named
For alternate path, i.e., the liquid refrigerant flowed into external heat exchanger 13 by condenser assembly 12 and flowed by Intermediate Heat Exchanger 15 outer
The refrigerant of gaseous state or gas-liquid mixed in heat exchanger 13 mutually carries out heat exchange, in addition, in the present embodiment, external heat exchanger 13
It can be the heat exchangers such as plate heat exchanger, pipe heat exchanger.
Refrigerating medium loop 2 includes the infusion mechanism 22 that circuit is in turn connected by pipeline, interior heat exchanger 21 and among the above
Between heat exchanger 15.Wherein, interior heat exchanger 21 is evaporator.In addition, in the present embodiment, infusion mechanism 22 is hydraulic pump, still
The present embodiment is without being limited thereto, and infusion mechanism 22 can also be the other structures for being able to drive refrigerating medium and circulating.
Refrigerant passage and refrigerating medium access, the refrigerating medium entrance of refrigerating medium access are provided in above-mentioned Intermediate Heat Exchanger 15
By piping connection in interior heat exchanger 21, refrigerating medium outlet is by piping connection in infusion mechanism 22.And the system of refrigerant passage
Cryogen entrance reconnects the first access in external heat exchanger 13 by piping connection after restricting element 14, and refrigerant outlet passes through
Piping connection is in the alternate path of external heat exchanger 13.
By the way that external heat exchanger 13 is arranged in refrigerant circuit 1, when which is in refrigerating state, exchanged heat by centre
The refrigerant of gaseous state or gas-liquid mixed that device 15 flows out is flowed into external heat exchanger in external heat exchanger 13 and by condenser assembly 12
Liquid refrigerant in 13 carries out heat exchange, so that enter the refrigerant of compressor 11 after external heat exchanger 13 becomes completely
Gaseous state avoids causing compressor 11 liquid hammer, guarantees the normal work of compressor 11, and is flowed into outer change by condenser assembly 12
Liquid refrigerant in hot device 13 is further subcooled, and can effectively improve COP (the Coefficient Of of the car air-conditioner
Performance, coefficient of refrigerating performance), improve the refrigerating capacity of the car air-conditioner.
Specifically, Fig. 2 is the pressure-enthalpy chart of car air-conditioner provided in this embodiment and car air-conditioner in the prior art.Such as
Shown in Fig. 2, wherein A is the cyclic process of the refrigerant in car air-conditioner in the prior art.B is the automobile-used sky in the present embodiment
The cyclic process of refrigerant in tune, p are pressure, and h is the ratio break of refrigerant.As seen from Figure 2, automobile-used in the present embodiment
The compression ratio (the ratio between pressure at expulsion and pressure of inspiration(Pi)) of compressor 11 in air-conditioning reduces, and the power consumption of plasticator 11 also drops therewith
Low, refrigerant flow increases, COP and refrigerating capacity compared with the existing technology in car air-conditioner be respectively increased about 20% and 5%.Pressure
Enthalpy diagram is the common figure analyzed in the prior art for refrigerant, and therefore, details are not described herein.
Restricting element 14 is set to connection Intermediate Heat Exchanger 15 between external heat exchanger 13 and Intermediate Heat Exchanger 15
On the connected pipeline of refrigerant inlet.When the car air-conditioner is in refrigerating state, the liquid refrigerant that is flowed out by external heat exchanger 13
It is flowed into Intermediate Heat Exchanger 15 by restricting element 14, in the process, restricting element 14 is depressured liquid refrigerant,
So that liquid refrigerant becomes the refrigerant of gas-liquid mixed, convenient for entering the hot friendship of rear and refrigerating medium progress in Intermediate Heat Exchanger 15
It changes.In the present embodiment, restricting element 14 is electric expansion valve, but the present embodiment is without being limited thereto, and restricting element 14 can be with
For structures such as throttle pipe, heating power expansion valves.
In addition, the car air-conditioner further includes electric heater 3 and control system (not shown), electric heater 3, which is located at, to be carried
2 side of refrigerant circuit, that is, in crew module 4 and be connected to control system, control system is connected to compressor 11, condenser
Assembly 12 and electric expansion valve 14.The electric heater 3 is for heating the air in crew module 4 to realize the car air-conditioner
Heating operations, and by refrigerating medium loop 2 and refrigerant circuit 1 to freezing in crew module 4.Electric heater 3 is existing
Common structure in technology, details are not described herein.
Fig. 3 is the perspective view of external heat exchanger 13 in the present embodiment.As shown in figure 3, in the present embodiment, external heat exchanger 13 has
Body is pipe heat exchanger, the external heat exchanger 13 include shell 131 and the heat exchanger tube 132 in shell 131, shell 131 it is interior
Shell side between wall and heat exchanger tube 132 is the first access, and the tube side of heat exchanger tube 132 is alternate path.Specifically, shell 131
Both ends are respectively arranged with the first inlet pipe 1311 being connected to inside shell 131 and the first outlet pipe 1312, the first inlet pipe 1311 pass through pipe
Road is connected to condenser assembly 12, and the first outlet pipe 1312 is reconnected after restricting element 14 in Intermediate Heat Exchanger by piping connection
15 refrigerant inlet.132 both ends of heat exchanger tube are respectively arranged with the second inlet pipe 1322 stretched out outside shell 131 and the second outlet pipe
1321, for the second inlet pipe 1322 by piping connection in the refrigerant outlet of Intermediate Heat Exchanger 15, the second outlet pipe 1321 passes through pipeline
It is connected to the air inlet of compressor 11.In addition, in the present embodiment, heat exchanger tube 132 is helix tube, heat exchange area can be increased,
So that being pure gaseous refrigerant by the refrigerant that the second outlet pipe 1321 flows out, liquid refrigerant is avoided to enter compressor 11
It is interior, but the present embodiment is without being limited thereto, can also be arranged by being arranged outside hydraulic barrier or heat exchanger tube 132 in shell 131
The modes such as fin increase heat exchange area, to improve heat transfer effect.
The course of work of the car air-conditioner will be described in detail below.
1, under refrigerating state
The gaseous refrigerant of the high temperature and pressure of the exhaust outlet discharge of compressor 11 enters condenser assembly 12 by pipeline,
In condenser assembly 12, the gaseous refrigerant of high temperature and pressure and the air of the outer relatively lower temp of crew module 4 carry out heat exchange
Become the liquid refrigerant of high temperature and pressure, the liquid refrigerant then flowed out by condenser assembly 12 in external heat exchanger 13 with by
The refrigerant of gaseous state or gas-liquid mixed that intercooler 15 flows out carries out heat exchange and is further subcooled.Then by external heat exchanger 13
The liquid refrigerant of outflow being further subcooled becomes the gas-liquid mixed refrigerant of low-temp low-pressure after the decompression of restricting element 14, low
The gas-liquid mixed refrigerant of warm low pressure enters in Intermediate Heat Exchanger 15 and carries out heat exchange, refrigerant suction refrigerating medium with refrigerating medium
Heat after become the refrigerant of cryogenic overheating gaseous state or gas-liquid mixed.The gaseous state or coexistence of gas and liquid flowed out by Intermediate Heat Exchanger 15
Refrigerant enter in intercooler 13 and to carry out heat exchange with the liquid refrigerant flowed out by condenser assembly 12 and whole
Become superheated refrigerant gas, is returning to compressor 11 later, carrying out next refrigeration cycle.
Refrigerating medium and refrigerant in Intermediate Heat Exchanger 15 carry out releasing heat when heat exchange, and temperature reduces, then in liquid
Under the action of press pump, enters the interior air in interior heat exchanger 21 with crew module 4 and carry out heat exchange, the air in crew module 4
Releasing heat and temperature reduces, and refrigerating medium absorbs heat and heats up, and then the refrigerating medium after heating is re-introduced into intermediate heat exchange
Heat exchange is carried out with refrigerant in device 15, carries out refrigerating medium circulation next time.
2. under heating state
Control system controls electric heater 3 and works, and directly heats to the air in crew module 4, and according to passenger
The temperature of setting controls the working frequency or heating duration of electric heater 3.
The present embodiment additionally provides a kind of automobile, which has above-mentioned car air-conditioner, can prevent liquid refrigerant
Liquid hammer is caused to compressor 11, while improving the refrigeration effect to crew module 4, while refrigerant being prevented to enter vehicle occupant compartment
Jeopardize occupant safety and health in 4.
Embodiment of above only elaborates the basic principles and features of the present invention, and the utility model is not by above-mentioned reality
The mode of applying limits, and on the premise of not departing from the spirit and scope of the utility model, the present invention has various changes and changes,
These changes and changes fall within the scope of the claimed invention.The utility model requires protection scope is by appended
Claims and its equivalent thereof.
Claims (7)
1. a kind of car air-conditioner characterized by comprising
Refrigerant circuit (1), including being in turn connected to form the compressor (11) in circuit, condenser assembly (12), outer by pipeline
Heat exchanger (13), restricting element (14) and Intermediate Heat Exchanger (15), the external heat exchanger (13) is interior to be provided with two paths, wherein
One access is connected to the condenser assembly (12) and the restricting element (14), another described access is connected to institute
State Intermediate Heat Exchanger (15) and the compressor (11)；
Refrigerating medium loop (2), infusion mechanism (22), interior heat exchanger (21) and institute including being in turn connected to form circuit by pipeline
State Intermediate Heat Exchanger (15).
2. car air-conditioner according to claim 1, which is characterized in that the restricting element (14) is electric expansion valve.
3. car air-conditioner according to claim 1, which is characterized in that the external heat exchanger (13) include shell (131) and
Heat exchanger tube (132), the heat exchanger tube (132) are set in the shell (131), and institute is stretched out at the heat exchanger tube (132) both ends
State shell (131) outside.
4. car air-conditioner according to claim 3, which is characterized in that shell (131) both ends are respectively arranged with connection
Internal the first inlet pipe (1311) of the shell (131) and the first outlet pipe (1312), first inlet pipe (1311) are connected to institute
It states condenser assembly (12), first outlet pipe (1312) is connected to the Intermediate Heat Exchanger (15).
5. car air-conditioner according to claim 3, which is characterized in that heat exchanger tube (132) both ends, which are respectively arranged with, stretches
Outer the second inlet pipe (1322) of the shell (131) and the second outlet pipe (1321), second inlet pipe (1322) are connected to institute out
It states Intermediate Heat Exchanger (15), second outlet pipe (1321) is connected to the compressor (11).
6. car air-conditioner according to claim 1, which is characterized in that the car air-conditioner further include electric heater (3) and
Control system, the electric heater (3) is located at the refrigerating medium loop (2) side, and is connected to the control system, the control
System processed is connected to the compressor (11) and the condenser assembly (12).
7. a kind of automobile, which is characterized in that including the car air-conditioner as described in claim 1-6 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204871.1U CN209365839U (en) | 2018-12-26 | 2018-12-26 | A kind of car air-conditioner and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204871.1U CN209365839U (en) | 2018-12-26 | 2018-12-26 | A kind of car air-conditioner and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209365839U true CN209365839U (en) | 2019-09-10 |
Family
ID=67831220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822204871.1U Active CN209365839U (en) | 2018-12-26 | 2018-12-26 | A kind of car air-conditioner and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209365839U (en) |
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2018
- 2018-12-26 CN CN201822204871.1U patent/CN209365839U/en active Active
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