CN108482062A - Electric automobile heat-pump type air-conditioning system with injector - Google Patents
Electric automobile heat-pump type air-conditioning system with injector Download PDFInfo
- Publication number
- CN108482062A CN108482062A CN201810247797.3A CN201810247797A CN108482062A CN 108482062 A CN108482062 A CN 108482062A CN 201810247797 A CN201810247797 A CN 201810247797A CN 108482062 A CN108482062 A CN 108482062A
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- Prior art keywords
- injector
- port
- way reversing
- heat exchanger
- reversing valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- 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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
-
- 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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The electric automobile heat-pump type air-conditioning system with injector that the invention discloses a kind of, the first four-way reversing valve and the second four-way reversing valve are respectively set in systems and switches valve group as refrigerant flow path, and the injector with double loop form is set and is used to recycle the expansion work in throttling process, realization system is run under refrigeration, heating and the different mode of defrosting.The present invention realizes the expansion work recycling of throttling process using injector, the pressure of inspiration(Pi) for promoting compressor simultaneously, to improve the refrigeration and heating capacity of system, and refrigeration and heating efficiency, it especially solves the problems, such as that the pressure of inspiration(Pi) of operation of heat pump under worst cold case is too low, increases circular economy.
Description
Technical field
The present invention relates to a kind of electric automobile air-conditioning system more particularly to a kind of electric automobile heat-pump types of subsidiary injector
Air-conditioning system.
Background technology
Demand of the today's society to the energy is increasing, and the requirement to environmental protection is also higher and higher, global energy crisis
Increasingly sharpen, environmental protection problem becomes increasingly conspicuous.Energy-saving and environment-friendly electric vehicle has become the development side of future automobile industrialization
To.Air conditioning performance as one of car comfort index also has become the basic demand of Hyundai Motor consumer.
Currently, electric vehicle heat supply mainly uses ptc material heating technique, but its energy consumption is higher, greatly reduces vapour
The course continuation mileage of vehicle.Therefore, which is not most effective solution.Air conditioner with air-source heat pump group have simple system,
Energy conservation and environmental protection, it is easy to maintain the advantages that, therefore obtain the popularization and application of large area.But conventional air source heat pump air-conditioner unit due to
Throttle the irreversible loss brought, has greatly affected the efficiency of cycle.And works as and apply in cold wet area Winter heat supply
When, if ambient temperature is too low, the heat fade of system can quickly, and heating capacity is insufficient.In addition to this, on the one hand, evaporating pressure is too low
The compression ratio that system can be increased, causes delivery temperature to increase；On the other hand, car room external heat exchanger is easy knot under worst cold case
Frost, these can all influence the safety and reliability of air conditioner heat pump system.
Invention content
The present invention be to avoid above-mentioned existing deficiencies in the technology, provide it is a kind of it is of simple structure and low cost,
The energy-efficient electric automobile heat-pump type air-conditioning system with injector, to improve the heating load and refrigerating capacity of system, increase follows
Ring economy.
The present invention is to solve technical problem to adopt the following technical scheme that：
Electric automobile heat-pump type air-conditioning system of the present invention with injector is structurally characterized in that：
The first four-way reversing valve and the second four-way reversing valve are respectively set in the system as refrigerant flow path to switch
Valve group, and injector is arranged for recycling expansion work in throttling process realizes system operation in cooling mode, in heat pump
Operation under operating mode and the operation under defrosting operating condition；
The second port of indoor heat exchanger is connected with the first port of first four-way reversing valve in setting system, room
The first port of interior heat exchanger is connected with the first port of second four-way reversing valve；First four-way reversing valve its
Its three port connects the driving fluid input end of injector, the exhaust outlet of compressor and outdoor heat exchanger correspondingly
First port；The primary fluid inlet of the injector is connected with the outlet of device for drying and filtering, the fluid outlet and gas of injector
The import of liquid/gas separator is connected；The gas outlet of the gas-liquid separator is connected with the air entry of compressor, the liquid of gas-liquid separator
Body outlet is connected with the entrance of expansion valve；Other three ports of second four-way reversing valve connect the room correspondingly
The entrance of the second port of external heat exchanger, the outlet of expansion valve and device for drying and filtering has been arranged in parallel auxiliary with indoor heat exchanger
Help electric heater；
The injector has following double loop form, is respectively：The fluid outlet of blowing emitter rises and is sequentially connected gas
The first circuit and the first four-way reversing valve that liquid/gas separator, expansion valve and the second four-way reversing valve are formed connect injector
The second servo loop that driving fluid input end is formed；
The design feature of electric automobile heat-pump type air-conditioning system of the present invention with injector is lain also in：Setting system is being freezed
The method of operation under pattern is：The first port phase with outdoor heat exchanger that the exhaust outlet of compressor passes through the first four-way reversing valve
The driving fluid input end of injector is connected by connection, the first four-way reversing valve with the second port of indoor heat exchanger；It is described
The second port of outdoor heat exchanger is connected by the second four-way reversing valve with the entrance of device for drying and filtering, and by the outlet of expansion valve
It is connected with the first port of indoor heat exchanger.
The design feature of electric automobile heat-pump type air-conditioning system of the present invention with injector is lain also in：Setting system is in heat pump
The method of operation under operating mode is：First four-way reversing valve is by the second port phase of the exhaust outlet of compressor and indoor heat exchanger
Connection, driving fluid input end being connected with the first port of outdoor heat exchanger by the first four-way reversing valve of injector；
The second port of outdoor heat exchanger is connected by second four-way reversing valve with the outlet of expansion valve, and by indoor heat exchanger
First port is connected with the entrance of device for drying and filtering.
The design feature of electric automobile heat-pump type air-conditioning system of the present invention with injector is lain also in：The system is arranged to exist
The method of operation under defrosting operating condition is：It opens refrigeration mode to defrost, while opening the electrical auxiliary heater.
The design feature of electric automobile heat-pump type air-conditioning system of the present invention with injector is lain also in：The expansion valve is single
To heating power expansion valve or electric expansion valve.
It is to improve heat pump cycle efficiency to recycle throttling process expansion work in refrigeration system and improve suction pressure of compressor
Effective means, injector are a kind of pressures of inspiration(Pi) that can be recycled high pressure condensed fluid throttling expansion work(while promote compressor
Equipment, the present invention improve the refrigeration and heating capacity of system, and refrigeration and heating using the heat pump air conditioning system with injector
Efficiency especially solves the problems, such as that the pressure of inspiration(Pi) of operation of heat pump under worst cold case is too low.Compared with the prior art, of the invention
It has the beneficial effect that：
1, the first four-way reversing valve is respectively set in present system and the second four-way reversing valve is cut as refrigerant flow path
Valve group is changed, both ensure that the correct flow direction of refrigerant under the various operational modes of system, while enormously simplifying pipe-line system, is improved
The reliability of system；
2, in present system the air-breathing of compressor is effectively increased using the pressurization after injector injection refrigerant
Pressure reduces compressor air-discharging specific enthalpy and avoids environment temperature in heat pump working condition to make compressor exhaust temperature be reduced
In the case that environment temperature is excessively high in too low or cooling condition, compressor exhaust temperature is excessively high and bring system safety with can
By sex chromosome mosaicism；Meanwhile the expansion work in throttling process is recycled by injector and improves cycle under lower evaporating temperature
Total heating capacity, to solve the problems, such as that conventional heat pump technology heat capacity under worst cold case is insufficient.
Description of the drawings
Fig. 1 is present system structural schematic diagram；
Fig. 2 is that present system operates in refrigeration mode and defrosting mode principle schematic；
Fig. 3 is that present system operates in heating mode principle schematic；
Fig. 4 is the pressure-enthalpy chart of injector air-conditioning system theoretical circulation.
Figure label：1 compressor, 2 injectors, 3 devices for drying and filtering, 4 outdoor heat exchangers, 5 gas-liquid separators, 6 the 1st
Logical reversal valve, 7 expansion valves, 8 second four-way reversing valves, 9 electrical auxiliary heaters, 10 indoor heat exchangers,
Specific implementation mode
Referring to Fig. 1, Fig. 2 and Fig. 3, it is respectively set in the electric automobile heat-pump type air-conditioning system with injector in the present embodiment
First four-way reversing valve 6 and the second four-way reversing valve 8 switch valve group as refrigerant flow path, and be arranged injector for recycle section
Expansion work during stream realizes the operation of system in cooling mode, the operation under heat pump working condition and in defrosting operating condition
Under operation.
The second port of indoor heat exchanger 10 is connected with the first port of the first four-way reversing valve 6 in setting system, room
The first port of interior heat exchanger 10 is connected with the first port of the second four-way reversing valve 8；Other the three of first four-way reversing valve 6
A port connects the driving fluid input end of injector 2, the exhaust outlet of compressor 1 and outdoor heat exchanger 4 correspondingly
First port；The primary fluid inlet of injector 2 is connected with the outlet of device for drying and filtering 3, the fluid outlet and gas-liquid of injector 2
The import of separator 5 is connected；The gas outlet of gas-liquid separator 5 is connected with the air entry of compressor 1, the liquid of gas-liquid separator 5
Outlet is connected with the entrance of expansion valve 7；Other three ports of second four-way reversing valve 8 connect outdoor heat exchanger correspondingly
The entrance of 4 second port, the outlet of expansion valve 7 and device for drying and filtering 3；Unidirectional heating power expansion valve may be used in expansion valve 7
Or electric expansion valve.
As shown in Figure 1, injector 2 has following double loop form in the present embodiment：The fluid outlet of blowing emitter 2 rises
It is sequentially connected gas-liquid separator 5, expansion valve 7 and the second four-way reversing valve 8 and forms the first circuit；The driving fluid of injector 2 into
Mouth end connects the first four-way reversing valve 6 and forms second servo loop.
As shown in Fig. 2, the method for operation of setting system in cooling mode is：The exhaust outlet of compressor 1 passes through the one or four
Logical reversal valve 6 is connected with the first port of outdoor heat exchanger 4, the first four-way reversing valve 6 by the driving fluid of injector 2 into
Mouth end is connected with the second port of indoor heat exchanger 10；Second four-way reversing valve 8 is by the second port of outdoor heat exchanger 4 and does
The entrance of dry filter 3 is connected, and expansion valve 7 is connected with the first port of indoor heat exchanger 10.
Under refrigeration mode, the high pressure liquid refrigerant of the second port from outdoor heat exchanger 4 by device for drying and filtering 3 into
The primary fluid inlet for entering injector 2, forms low-voltage high speed liquid refrigerant after the nozzle acceleration and pressure decrease of injector 2, and low pressure is high
Fast liquid refrigerant with the saturation gaseous refrigerant from indoor heat exchanger 10 after the mixing chamber of injector 2 mixes, into spray
The diffusion room of emitter 2, which is slowed down, to be pressurized, and refrigerant enters gas-liquid separator 5 after slowing down and being pressurized from the fluid outlet of injector 2,
The gas part gone out through gas-liquid separation enters compressor 1, and the refrigerant gas for being changed into high temperature and pressure is compressed by compressor 1
Afterwards subcooled liquid is condensed into outdoor heat exchanger 4.The liquid refrigerant isolated through gas-liquid separator 5 passes through expansion valve 7
After reducing pressure by regulating flow, evaporation endothermic in heat exchanger 10 is got in, evaporates gaseous refrigerant the drawing as injector 2 formed later
Jet body, to complete refrigeration cycle.
Shown in Fig. 2, PTC electrical auxiliary heaters 9 are arranged in parallel with indoor heat exchanger 10 in systems, system is in defrosting work
The method of operation under condition is：It opens refrigeration mode shown in Fig. 2 to defrost, while opening PTC electrical auxiliary heaters, auxiliary adds
Heat can prevent indoor temperature when defrosting from declining, and vehicle window is caused to haze, while be used to compensate the need of heating load in car room when defrosting
It asks, to meet human body comfort requirement.
As shown in figure 3, the method for operation of the setting system under heat pump working condition is：First four-way reversing valve 6 is by compressor 1
Exhaust outlet is connected with the second port of indoor heat exchanger 10, and the driving fluid input end of injector 2 is commutated by the first four-way
Valve 6 leads in succession with the first port of outdoor heat exchanger 4；Second four-way reversing valve 8 by the second port of outdoor heat exchanger 4 with it is swollen
Swollen valve 7 is connected, and the first port of indoor heat exchanger 10 is connected with the entrance of device for drying and filtering 3.
It needs to may be selected to open auxiliary electrical heater according to load.
Under heating mode, the high pressure liquid refrigerant from indoor heat exchanger 10 enters injector 2 by device for drying and filtering 3
Primary fluid inlet, after nozzle acceleration and pressure decrease formed low-voltage high speed liquid refrigerant, low-voltage high speed liquid refrigerant with come from
The saturation gaseous refrigerant of outdoor heat exchanger 4 slows down into the diffusion room of injector 2 and increases after the mixing chamber mixing of injector 2
Pressure, refrigerant through injector 2 deceleration supercharging after enter gas-liquid separator 5, the gas part isolated through gas-liquid separator 5 into
Enter compressor 1, and gets in heat exchanger 10 after compressor 1 compresses and is changed into the refrigerant gas of high temperature and pressure and be condensed
For subcooled liquid；Enter outdoor heat exchanger 4 after expanded 7 reducing pressure by regulating flow of valve of liquid refrigerant isolated through gas-liquid separator 5
Middle evaporation endothermic evaporates driving fluid of the gaseous refrigerant formed later as injector, to complete heating cycle.
Commonly without shown in a-b-c-d-a in the theoretical refrigeration cycle of injector such as Fig. 4, the low pressure of evaporator outlet
Saturated vapor a enters compressor compresses, and it is high temperature and high pressure gas b that compression, which ends, is condensed into after entering condenser heat rejection later
High pressure saturated liquid c, low temperature d is depressured to by throttle valve constant enthalpy, becomes low subsequently into evaporator evaporation endothermic
Saturated vapor a is pressed, is recycled so as to complete one.
The theoretical refrigeration cycle of injector is as shown in figure 4, the high temperature and high pressure gas b ' that compressor is discharged in present system
It is condensed into high pressure saturated liquid c into condenser, then enters injector primary fluid inlet end as working fluid, by nozzle
Decompression speedup becomes low-temp low-pressure gas-liquid mixture phase d '；It is low from injector driving fluid input end injection evaporator outlet simultaneously
Saturated gas a, two fluids is pressed to be mixed into state e in mixing chamber, supercharging reduction of speed is carried out subsequently into the diffuser of injector
To the gas-liquid mixture fluid f of middle pressure, enters back into gas-liquid separator and carry out the separation of gas and liquid.Wherein saturated vapor
I.e. state a ' is discharged into compressor from gas-liquid separator gas outlet and is compressed；Saturated liquid, that is, state g passes through gas-liquid separation
Device liquid outlet is depressurized to state i through throttle valve constant enthalpy, enters back into evaporator and is evaporated to low-pressure saturated steam a and then is entered by injection
Injector, so as to complete entire cycle.
Heat pump cycle is identical as the course of work of refrigeration cycle, and only operating temperature range changes.
Compared with conventional heat pump technology, after having used injector technology, the power consumption of compressor reduces, the exhaust of compressor
Temperature is from tbIt is down to tb', it ensure that the safe and reliable operation of compressor；Meanwhile under the action of injector, throttling process recycling
A part of expansion work, enthalpy of the refrigerant before entering evaporator in system circulation are being down to hi by hd, to improve are being
Circulation heat of the system under worst cold case, improves the economy of system circulation.
Claims (5)
1. a kind of electric automobile heat-pump type air-conditioning system with injector, it is characterized in that：
The first four-way reversing valve (6) is respectively set in the system and the second four-way reversing valve (8) is cut as refrigerant flow path
Change valve group, and injector (2) be set for recycling expansion work in throttling process, realize system operation in cooling mode,
Operation under heat pump working condition and the operation under defrosting operating condition；
The second port of indoor heat exchanger (10) is connected with the first port of first four-way reversing valve (6) in setting system
It connects, the first port of indoor heat exchanger (10) is connected with the first port of second four-way reversing valve (8)；Described 1st
Other three ports of logical reversal valve (6) connect the driving fluid input end of injector (2), compressor (1) correspondingly
The first port of exhaust outlet and outdoor heat exchanger (4)；The primary fluid inlet of the injector (2) and device for drying and filtering (3)
Outlet is connected, and the fluid outlet of injector (2) is connected with the import of gas-liquid separator (5)；Gas-liquid separator (5) go out
Gas port is connected with the air entry of compressor (1), and the liquid outlet of gas-liquid separator (5) is connected with the entrance of expansion valve (7)；It is described
Other three ports of second four-way reversing valve (8) connect the second port of the outdoor heat exchanger (4), expansion correspondingly
The outlet of valve (7) and the entrance of device for drying and filtering (3), electrical auxiliary heater (9) has been arranged in parallel with indoor heat exchanger (10)；
The injector (2) has following double loop form, is respectively：The fluid outlet of blowing emitter (2) rises and is sequentially connected
The first circuit and the first four-way reversing valve that gas-liquid separator (5), expansion valve (7) and the second four-way reversing valve (8) are formed
(6) second servo loop that the driving fluid input end of connection injector (2) is formed.
2. the electric automobile heat-pump type air-conditioning system according to claim 1 with injector, it is characterized in that：Setting system exists
The method of operation under refrigeration mode is：The exhaust outlet of compressor (1) by the first four-way reversing valve (6) and outdoor heat exchanger
(4) first port is connected, and the first four-way reversing valve (6) is by the driving fluid input end and indoor heat exchanger of injector (2)
(10) second port is connected；Second four-way reversing valve (8) is by the second port and dry filter of outdoor heat exchanger (4)
The entrance of device (3) is connected, and the outlet of expansion valve (7) is connected with the first port of indoor heat exchanger (10).
3. the electric automobile heat-pump type air-conditioning system according to claim 1 with injector, it is characterized in that：Setting system exists
The method of operation under heat pump working condition is：First four-way reversing valve (6) is by the exhaust outlet and indoor heat exchanger of compressor (1)
(10) second port is connected, driving fluid input end the changing with outdoor by the first four-way reversing valve (6) of injector (2)
The first port of hot device (4) is connected；Second four-way reversing valve (8) is by the second port of outdoor heat exchanger (4) and expansion
The outlet of valve (7) is connected, and the first port of indoor heat exchanger (10) is connected with the entrance of device for drying and filtering (3).
4. the electric automobile heat-pump type air-conditioning system according to claim 1 with injector, it is characterized in that：The system is set
The method of operation under defrosting operating condition of uniting is：It opens refrigeration mode to defrost, while opening the electrical auxiliary heater (9).
5. the electric automobile heat-pump type air-conditioning system according to claim 1 with injector, it is characterized in that：The expansion valve
(7) it is unidirectional heating power expansion valve or electric expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247797.3A CN108482062A (en) | 2018-03-23 | 2018-03-23 | Electric automobile heat-pump type air-conditioning system with injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247797.3A CN108482062A (en) | 2018-03-23 | 2018-03-23 | Electric automobile heat-pump type air-conditioning system with injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108482062A true CN108482062A (en) | 2018-09-04 |
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ID=63319635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810247797.3A Pending CN108482062A (en) | 2018-03-23 | 2018-03-23 | Electric automobile heat-pump type air-conditioning system with injector |
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| Country | Link |
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| CN (1) | CN108482062A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515115A (en) * | 2018-11-27 | 2019-03-26 | 上海交通大学 | It is a kind of using carbon dioxide as the automotive air-conditioning system of working medium and control method |
| CN110654199A (en) * | 2019-10-10 | 2020-01-07 | 上海理工大学 | New energy automobile heat pump air conditioning system with ejector |
| CN113335016A (en) * | 2021-05-08 | 2021-09-03 | 西安交通大学 | Injector module for new energy vehicle and transcritical CO2Heat pump air conditioning system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515115A (en) * | 2018-11-27 | 2019-03-26 | 上海交通大学 | It is a kind of using carbon dioxide as the automotive air-conditioning system of working medium and control method |
| CN109515115B (en) * | 2018-11-27 | 2021-05-25 | 上海交通大学 | Automobile air conditioning system using carbon dioxide as working medium and control method |
| CN110654199A (en) * | 2019-10-10 | 2020-01-07 | 上海理工大学 | New energy automobile heat pump air conditioning system with ejector |
| CN113335016A (en) * | 2021-05-08 | 2021-09-03 | 西安交通大学 | Injector module for new energy vehicle and transcritical CO2Heat pump air conditioning system and method |
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Application publication date: 20180904 |