CN110497769A - Automobile heat pump system and its control method - Google Patents
Automobile heat pump system and its control method Download PDFInfo
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- CN110497769A CN110497769A CN201910900566.2A CN201910900566A CN110497769A CN 110497769 A CN110497769 A CN 110497769A CN 201910900566 A CN201910900566 A CN 201910900566A CN 110497769 A CN110497769 A CN 110497769A
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- Prior art keywords
- interface
- heat exchanger
- triple valve
- valve
- vehicle external
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 230000008676 import Effects 0.000 claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 36
- 238000007906 compression Methods 0.000 claims abstract description 36
- 238000004378 air conditioning Methods 0.000 claims abstract description 31
- 238000005057 refrigeration Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 16
- 238000010257 thawing Methods 0.000 claims description 9
- 238000007791 dehumidification Methods 0.000 claims description 8
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 24
- 239000007789 gas Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 11
- 238000007664 blowing Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000736199 Paeonia Species 0.000 description 1
- 235000006484 Paeonia officinalis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- B60H1/00007—Combined heating, ventilating, or cooling devices
-
- 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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
-
- 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
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
-
- 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
- B60H3/00—Other air-treating devices
- B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
- B60H3/024—Moistening ; Devices influencing humidity levels, i.e. humidity control for only dehumidifying the air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H2001/00114—Heating or cooling details
Abstract
The present invention relates to automobile air conditioning technology fields, disclose a kind of automobile heat pump system and its control method, wherein automobile heat pump system includes the first interior heat exchanger and the second interior heat exchanger in the air-conditioning duct that air supply direction is successively installed on automobile, further include the compression unit being installed on outside air-conditioning duct, heating expansion valve and the first vehicle external heat exchanger, compression unit include first order compressor and high stage compressor；The outlet of first vehicle external heat exchanger, the import of first order compressor, the first interior heat exchanger, high stage compressor, the second interior heat exchanger, heating expansion valve and the first vehicle external heat exchanger are sequentially connected, to form heating circulation loop.The automobile heat pump system cools down the exhaust of the first order compressor of compression unit using the first interior heat exchanger, the lower air of the temperature for having just enter into air-conditioning duct is preheated using the first interior heat exchanger simultaneously, intercooled waste heat is effectively recycled, the heating capacity of winter condition is promoted.
Description
Technical field
The present invention relates to automobile air conditioning technology field more particularly to a kind of automobile heat pump system and its control methods.
Background technique
Under the dual-pressure of energy resource structure transition and energy-saving and emission-reduction, pure electric automobile is increasingly becoming the main of auto industry
Developing direction.Compared to conventional fuel oil car, due to not having engine exhaust heat can use, electric car proposes field of automobile air conditioner
Additional heat supply in winter demand is gone out.It heats currently, electric car winter generallys use electric heater assisted air conditioning system,
But electric heating heating not only low efficiency, but also a large amount of vehicle-mounted electric energies of consumption, seriously affect the course continuation mileage of electric car, it is desirable that
Electric car is equipped with the battery of higher capacity, considerably increases vehicle cost and weight.
Air source heat pump is the optimal case for solving electric car heating demands at this stage.Existing electric automobile heat-pump system
System mostly uses single stage compress mode, when the temperature of the surroundings is low, since pressure ratio increases, often results in compressor efficiency decline and row
Temperature spends the problems such as high, and along with the problem of system performance decaying is serious and chillout, influences heating effect, no
It is able to satisfy severe cold area heat supply in winter demand.
Summary of the invention
The embodiment of the present invention provides a kind of automobile heat pump system and its control method, to solve existing electric car system
The problem of thermal efficiency is low, chillout, to improve vehicle heating effect.
The embodiment of the present invention provides a kind of automobile heat pump system, the air-conditioner wind including being successively installed on automobile along air supply direction
The first interior heat exchanger and the second interior heat exchanger in road, further include the compression unit being installed on outside the air-conditioning duct, system
Thermal expansion valve and the first vehicle external heat exchanger, the compression unit include first order compressor and high stage compressor；Described first
The outlet of vehicle external heat exchanger, the first order compressor, the first interior heat exchanger, the high stage compressor, described the
The import of two interior heat exchangers, the heating expansion valve and the first vehicle external heat exchanger is sequentially connected, to form heating circulation
Circuit.
It wherein, further include the second vehicle external heat exchanger, the first interface of the second vehicle external heat exchanger passes through the first shut-off valve
It is connected to the import of the first vehicle external heat exchanger, the second interface of the second vehicle external heat exchanger is connected by the second shut-off valve
In the outlet of the first vehicle external heat exchanger.
Wherein, further include low pressure triple valve, triple valve is pressed in first, press triple valve, Triple Valve with High Pressure and refrigeration in second
Expansion valve；
The first interface of the low pressure triple valve is connected to the outlet of the first vehicle external heat exchanger, the low pressure triple valve
Second interface be connected to the import of the first order compressor, the third interface of the low pressure triple valve is connected to described first
The outlet of interior heat exchanger；The refrigeration expansion valve is set to the first interface and the first interior heat exchanger of the low pressure triple valve
Between import；
It presses the first interface of triple valve to be connected to the outlet of the first order compressor in described first, is pressed in described first
The second interface of triple valve is connected to the import of the described first interior heat exchanger, presses the third interface of triple valve to connect in described first
It is connected to the second interface of the second vehicle external heat exchanger；
The first interface of triple valve is pressed to be connected to the outlet of the described first interior heat exchanger in described second, in described second
The second interface of pressure triple valve is connected to the import of the high stage compressor, and the third interface of triple valve is pressed to connect in described second
It is connected to the first interface of the second vehicle external heat exchanger；
The first interface of the Triple Valve with High Pressure is connected to the outlet of the high stage compressor, the Triple Valve with High Pressure
Second interface is connected to the import of the described second interior heat exchanger, and the third interface of the Triple Valve with High Pressure is connected to described first
The import of vehicle external heat exchanger.
It wherein, further include regenerator, first the described first interior heat exchanger of heat exchange side series connection access of the regenerator
Between outlet and the third interface of the low pressure triple valve, the second heat exchange side series connection of the regenerator accesses the refrigerant-expansion
Between valve and the first interface of the low pressure triple valve.
It wherein, further include gas-liquid separator, the import of the gas-liquid separator is connected to the second of the low pressure triple valve
Interface, the outlet of the gas-liquid separator are connected to the import of the first order compressor.
The embodiment of the present invention also provides a kind of control method of automobile heat pump system, and the automobile heat pump system is using above-mentioned
Automobile heat pump system, the control method include heating mode, and the heating mode includes: connection the first vehicle external heat exchanger
Outlet, the first order compressor, the first interior heat exchanger, the high stage compressor, the second interior heat exchange
The import of device, the heating expansion valve and the first vehicle external heat exchanger.
Wherein, the heating mode includes:
It opens the first shut-off valve and the second shut-off valve, is connected to the first interface and second interface of low pressure triple valve, connection the
The first interface and second interface of triple valve are pressed in one, and the first interface and second interface of triple valve, connection are pressed in connection second
The first interface and second interface of Triple Valve with High Pressure.
It wherein, further include refrigeration mode, the refrigeration mode includes:
First shut-off valve and second shut-off valve are closed, the second interface and third of the low pressure triple valve are connected to
Interface is connected to the first interface and third interface for pressing triple valve in described first, presses the second of triple valve in connection described second
Interface and third interface are connected to the first interface and third interface of the Triple Valve with High Pressure.
It wherein, further include dehumidification mode, the dehumidification mode includes:
First shut-off valve and second shut-off valve are closed, the second interface and third of the low pressure triple valve are connected to
Interface is connected to the first interface and third interface for pressing triple valve in described first, presses the second of triple valve in connection described second
Interface and third interface are connected to the first interface and second interface of the Triple Valve with High Pressure.
It wherein, further include defrosting mode, the defrosting mode includes:
First shut-off valve and second shut-off valve are closed, the second interface and third of the low pressure triple valve are connected to
Interface is connected to the first interface and third interface for pressing triple valve in described first, presses the second of triple valve in connection described second
Interface and third interface are connected to the first interface and third interface of the Triple Valve with High Pressure.
Automobile heat pump system provided in an embodiment of the present invention and its control method, wherein automobile heat pump system includes along air-supply
The the first interior heat exchanger and the second interior heat exchanger that direction is successively installed in the air-conditioning duct of automobile, further include being installed on sky
Compression unit, heating expansion valve and the first vehicle external heat exchanger, compression unit outside tune air duct include first order compressor and second
Grade compressor；The outlet of first vehicle external heat exchanger, first order compressor, the first interior heat exchanger, high stage compressor, the second vehicle
Interior heat exchanger, the import for heating expansion valve and the first vehicle external heat exchanger are sequentially connected, to form heating circulation loop.Automobile heat
Pumping system cools down the exhaust of the first order compressor of compression unit using the first interior heat exchanger, can be to avoid extremely low
The problem of compressor exhaust temperature transfinites under warm operating condition；Simultaneously using the first interior heat exchanger to the temperature for having just enter into air-conditioning duct
Lower air is preheated, and intercooled waste heat is effectively recycled, and promotes the heating capacity of winter condition, can be obviously improved
The performance of electric vehicle heat pump system under extreme low temperature operating condition effectively promotes the wide warm area adaptability of automobile heat pump system, by vapour
The scope of application of vehicle heat pump system widens extreme severe cold area.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of one of embodiment of the present invention automobile heat pump system；
Fig. 2 is the work flow diagram of automobile heat pump system in a heating mode in the embodiment of the present invention；
Fig. 3 is the work flow diagram of automobile heat pump system in cooling mode in the embodiment of the present invention；
Fig. 4 is work flow diagram of the automobile heat pump system under dehumidification mode in the embodiment of the present invention；
Fig. 5 is the work flow diagram of automobile heat pump system in defrost mode in the embodiment of the present invention；
Description of symbols:
1: compression unit；2: the first vehicle external heat exchangers；3: vehicle external fan；
4: the first interior heat exchangers；5: the second interior heat exchangers；6: gas-liquid separator；
7: the second vehicle external heat exchangers；8: refrigeration expansion valve；9: regenerator；
10: Triple Valve with High Pressure；11: low pressure triple valve；12: interior fan；
13: fresh air air-valve；14: tuning air-valve；15: heating expansion valve；
Triple valve is pressed in 16: the first；Triple valve is pressed in 17: the second；18: the first shut-off valves；
19: the second shut-off valves；20: air-conditioning duct；21: fresh air；
22: return air；23: windshield air outlet；24: blowing face air outlet；
25: blowing foot air outlet.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the embodiment of the present invention, it should be noted that unless otherwise clearly defined and limited, term " the
One " " the second " is the number in order to clearly illustrate product component progress, does not represent any essential distinction."upper" "lower" " left side "
Direction shown in attached drawing is subject in the direction on " right side ".It for the ordinary skill in the art, can be as the case may be
Understand the concrete meaning of above-mentioned term in embodiments of the present invention.
It should be noted that unless otherwise clearly defined and limited, term " connection " shall be understood in a broad sense, for example, can
It, can also be indirectly connected through an intermediary to be to be connected directly.It for the ordinary skill in the art, can be specific
Situation understands concrete meaning of the above-mentioned term in inventive embodiments.
Fig. 1 is the structural schematic diagram of one of embodiment of the present invention automobile heat pump system, and Fig. 2 is in the embodiment of the present invention
Automobile heat pump system work flow diagram in a heating mode, as shown in FIG. 1 to FIG. 2, one kind provided in an embodiment of the present invention
Automobile heat pump system, the first interior heat exchanger 4 including being successively installed on along air supply direction in the air-conditioning duct 20 of automobile and the
Two interior heat exchangers 5 further include exchanging heat outside the compression unit 1 being installed on outside air-conditioning duct 20, heating expansion valve 15 and the first vehicle
Device 2, compression unit 1 include first order compressor and high stage compressor, and the first order compressor of right end is low-pressure machine, left end
High stage compressor is high-pressure unit.The outlet of first vehicle external heat exchanger 2, first order compressor, the first interior heat exchanger 4, second
The import of grade compressor, the second interior heat exchanger 5, heating expansion valve 15 and the first vehicle external heat exchanger 2 is sequentially connected, to form system
Soft circulation circuit.
Specifically, it is illustrated for from right to left in the present embodiment by air supply direction, the first interior heat exchanger 4 is located at
The right side of second interior heat exchanger 5, closer to air outlet.In a heating mode, the first interior heat exchanger 4 and the second interior heat exchange
Device 5 is both used as cooler.Air inlet in air-conditioning duct 20 exchanges heat with the first interior heat exchanger 4 first, the first interior heat exchange
Refrigerant gas in device 4 cools down heat release, and the air inlet outside the first interior heat exchanger 4 is then preheated.Then the air inlet after preheating is again
It exchanges heat with the second interior heat exchanger 5, air inlet is further heated into the high temperature air that can be used for heat supply, is finally sent to use
Family end achievees the purpose that heat car room.Refrigerant can use R134a, R1234yf or CO2Equal refrigerants, the present embodiment
In refrigerant use natural refrigerant carbon dioxide.
As shown in Fig. 2, the refrigerant gas of low-temp low-pressure becomes medium temperature after the first order compressor compresses of compression unit 1
The gas of high pressure, then the exhaust of first order compressor flows into the interior heat exchanger 4 of first be mounted in air-conditioning duct 20, rigid
After being sent into the cold air cooling of air-conditioning duct 20, become the refrigerant gas pressed in low temperature.The refrigerant gas pressed in low temperature is again
The secondary compression unit 1 that flows back to carries out the second second compression, and the refrigerant vapour of high temperature and pressure is compressed by high stage compressor.The second level
The refrigerant vapour of the high temperature and pressure of compressor discharge flows into the interior heat exchanger 5 of second be mounted in air-conditioning duct 20, empty
It adjusts the air in air duct 20 after the first interior heat exchanger 4 preheats cooling, then passes through heating expansion valve 15, be expanded into low
The refrigerant of the gas-liquid two-phase state of warm low pressure.Then the refrigerant of low-temp low-pressure enters the first vehicle external heat exchanger 2, in the first vehicle
Evaporative phase-change in external heat exchanger 2 after becoming the refrigerant gas of low-temp low-pressure, flows to the first order compression of compression unit 1 again
Machine completes a refrigerant circulation.
A kind of automobile heat pump system provided in this embodiment, the air-conditioning duct including being successively installed on automobile along air supply direction
The interior heat exchanger of interior first and the second interior heat exchanger further include the compression unit being installed on outside air-conditioning duct, heating expansion
Valve and the first vehicle external heat exchanger, compression unit include first order compressor and high stage compressor；First vehicle external heat exchanger goes out
Mouth, first order compressor, the first interior heat exchanger, high stage compressor, the second interior heat exchanger, heating expansion valve and the first vehicle
The import of external heat exchanger is sequentially connected, to form heating circulation loop.The automobile heat pump system utilizes the first interior heat exchanger pair
The exhaust of the first order compressor of compression unit is cooled down, and can be transfinited to avoid compressor exhaust temperature under extreme low temperature operating condition
The problem of；The lower air of the temperature for having just enter into air-conditioning duct is preheated using the first interior heat exchanger simultaneously, effectively
Intercooled waste heat is recycled, the heating capacity of winter condition is promoted, electric car heat under extreme low temperature operating condition can be obviously improved
The performance of pumping system effectively promotes the wide warm area adaptability of automobile heat pump system, the scope of application of automobile heat pump system is widened
To extreme severe cold area.
It further, further include the second vehicle external heat exchanger 7 as shown in FIG. 1 to FIG. 2, the first of the second vehicle external heat exchanger 7 connects
Mouthful (i.e. left end interface) is connected to the import of the first vehicle external heat exchanger 2 by the first shut-off valve 18, and the of the second vehicle external heat exchanger 7
Two interfaces (i.e. right end interface) are connected to the outlet of the first vehicle external heat exchanger 2 by the second shut-off valve 19.Outside namely the second vehicle
Heat exchanger 7 is parallel to the first vehicle external heat exchanger 2.
Specifically, the first vehicle external heat exchanger 2 and the second vehicle external heat exchanger 7 can be placed side by side on headstock.Under heating condition
The course of work and above-described embodiment when putting into the second vehicle external heat exchanger 7 is essentially identical, unlike, it is swollen through heating expansion valve 15
The refrigerant of low-temp low-pressure after swollen is divided into two fluids, and a part is directly entered the first vehicle external heat exchanger 2 and exchanges heat, another
Portion then flows into the second vehicle external heat exchanger 7 through the first shut-off valve 18 and exchanges heat, and two fluids is respectively in 2 He of the first vehicle external heat exchanger
Evaporative phase-change in second vehicle external heat exchanger 7, after becoming the gaseous refrigerant of low-temp low-pressure, the second shut-off valve 19 through being connected is again
Merge into stream of fluid.By the way that the first vehicle external heat exchanger 2 and the second vehicle external heat exchanger 7 is in parallel as evaporator, effectively increase
The heat exchange area of evaporator increases the caloric receptivity of evaporator, can promote the heating performance of winter condition.
It further, as shown in fig. 1~fig. 5, further include being pressed in triple valve 16, second in low pressure triple valve 11, first
Press triple valve 17, Triple Valve with High Pressure 10 and refrigeration expansion valve 8.
The first interface (i.e. a interface) of low pressure triple valve 11 is connected to the outlet of the first vehicle external heat exchanger 2, low pressure triple valve
11 second interface (i.e. b interface) is connected to the import of first order compressor, the third interface (i.e. c interface) of low pressure triple valve 11
It is connected to the outlet of the first interior heat exchanger 4.Refrigeration expansion valve 8 be set to low pressure triple valve 11 first interface (i.e. a interface) and
Between the import of first interior heat exchanger 4.
It presses the first interface (i.e. a interface) of triple valve 16 to be connected to the outlet of first order compressor in first, is pressed in first
The second interface (i.e. b interface) of triple valve 16 is connected to the import of the first interior heat exchanger 4, and the third of triple valve 16 is pressed in first
Interface (i.e. c interface) is connected to the second interface (i.e. right end interface) of the second vehicle external heat exchanger 7.
The first interface (i.e. a interface) of triple valve 17 is pressed to be connected to the outlet of the first interior heat exchanger 4 in second, in second
The second interface (i.e. b interface) of pressure triple valve 17 is connected to the import of high stage compressor, and the third of triple valve 17 is pressed in second
Interface (i.e. c interface) is connected to the first interface (i.e. left end interface) of the second vehicle external heat exchanger 7.
The first interface (i.e. a interface) of Triple Valve with High Pressure 10 is connected to the outlet of high stage compressor, Triple Valve with High Pressure
Second interface (i.e. b interface) is connected to the import of the second interior heat exchanger, third interface (the i.e. c interface) connection of Triple Valve with High Pressure
In the import of the first vehicle external heat exchanger.
Specifically, it is pressed in low pressure triple valve 11, first in triple valve 16, second and presses triple valve 17 and Triple Valve with High Pressure 10 equal
Electrically operated valve can be used.By the way that four triple valves are arranged, can be connect according to the connection of the different timely switching three-way valves of operating condition
Mouthful, meet user demand.
As shown in Fig. 2, the work flow diagram as under heating mode, at this point, the first shut-off valve 18 and the second shut-off valve 19
It opens, low pressure triple valve 11 is connected to a, b interface, and pressure triple valve 16 is connected to a, b interface in first, and pressure triple valve 17 connects in second
Logical a, b interface, Triple Valve with High Pressure 10 are connected to a, b interface.
As shown in figure 3, the work flow diagram as under refrigeration mode, at this point, the first shut-off valve 18 and the second shut-off valve 19
It is turned off, low pressure triple valve 11 is connected to b, c interface, and pressure triple valve 16 is connected to a, c interface in first, and pressure triple valve 17 connects in second
Logical b, c interface, Triple Valve with High Pressure 10 are connected to a, c interface.
As shown in figure 4, the work flow diagram as under dehumidification mode, at this point, the first shut-off valve 18 and the second shut-off valve 19
It is turned off, low pressure triple valve 11 is connected to b, c interface, and pressure triple valve 16 is connected to a, c interface in first, and pressure triple valve 17 connects in second
Logical b, c interface, Triple Valve with High Pressure 10 are connected to a, b interface.
As shown in figure 5, the work flow diagram as under defrosting mode, at this point, the first shut-off valve 18 and the second shut-off valve 19
It is turned off, low pressure triple valve 11 is connected to b, c interface, and pressure triple valve 16 is connected to a, c interface in first, and pressure triple valve 17 connects in second
Logical b, c interface, Triple Valve with High Pressure 10 are connected to a, c interface.
Further, as shown in figure 3, further including regenerator 9, first heat exchange side (left channel) series connection of regenerator 9
Enter between the outlet of the first interior heat exchanger 4 and the third interface (i.e. c interface) of low pressure triple valve 11, the second of regenerator 9 is changed
Between hot side (right channel) series connection access refrigeration expansion valve 8 and the first interface (i.e. a interface) of low pressure triple valve 11, that is,
Between second heat exchange side series connection access refrigeration expansion valve 8 of regenerator 9 and the outlet of the first vehicle external heat exchanger 2.
Specifically, in cooling mode, regenerator 9 comes into operation.As shown in figure 3, the first order compressor of compression unit 1
By pressing pressure triple valve 17 and 7 connection of the second vehicle external heat exchanger in triple valve 16 and second in first, refrigerant passes through for exhaust
After stage compressor compression, reach a high temperature middle pressure condition；Then become in low temperature after the second vehicle external heat exchanger 7 is cooling and press
Gas flow into high stage compressor, after high stage compressor compression become high temperature and pressure gas；Second level compression
The first vehicle of gas flow external heat exchanger 2 of the high temperature and pressure of machine discharge, and the air blown by vehicle external fan 3 is cooling, becomes low
Then the liquid of warm high pressure is entered back into regenerator 9 and is further cooled, reach lower temperature；It throttles through refrigeration expansion valve 8
Become the two-phase fluid of low-temp low-pressure after effect, then evaporated in the first interior heat exchanger 4, is absorbed empty in air-conditioning duct
The heat of gas achievees the purpose that freeze to car room.Wherein, the temperature of the first heat exchange side in regenerator 9 is changed lower than second
The temperature of hot side, thus may be implemented that the refrigerant in regenerator 9 in first heat exchange side is pre-chilled, reduce refrigerant throttling
Mass dryness fraction after preceding temperature and throttling, increases refrigerating capacity, promotes refrigeration effect.
By being mounted on the second vehicle external heat exchanger 7 of headstock in the exhaust progress of the first order compressor of compression unit 1
Between cooling mode, reduce the delivery temperature of compression unit 1, guarantee compression unit 1 under thermal extremes environment high pressure ratio operating condition
Safe handling, widens automobile heat pump system to the applicability of high-temperature refrigeration operating condition.
More specifically, since the first vehicle external heat exchanger 2 and the second vehicle external heat exchanger 7 are arranged side by side, thus 3 energy of vehicle external fan
It is enough that the first vehicle external heat exchanger 2 and the second vehicle external heat exchanger 7 are cooled down simultaneously.
Further, as shown in Figure 1, further including gas-liquid separator 6, the import of gas-liquid separator 6 is connected to low pressure threeway
The second interface (i.e. b interface) of valve 11, the outlet of gas-liquid separator 6 are connected to the import of first order compressor.By the way that gas is arranged
Liquid/gas separator 6 can separate as far as possible gas with liquid, prevent liquid entry into compression unit 1, damage compressor.
Further, as shown in Figure 1, further including the vehicle external fan 3 being mounted on outside air-conditioning duct 20, vehicle external fan 3 goes out
Air port the first vehicle external heat exchanger 2 of direction.
Further, as shown in Figure 1, further including the interior fan 12 being mounted in air-conditioning duct 20, interior fan 12 is pacified
Mounted in the right side of the first interior heat exchanger 4, cold wind is conveyed from right to left.Interior fan 12 and vehicle external fan 3 can be adopted
Use electric fan.
Further, as shown in Figure 1, further including the fresh air air-valve 13 for the entrance for being installed on air-conditioning duct 20, using new
It is fresh air 21 or return air 22 that wind air-valve 13, which can choose be blown into, to carry out fresh air circulation or interior self-loopa.
Further, as shown in Figure 1, further include the windshield air outlet 23 for being installed on the exit of air-conditioning duct 20,
Blow and face air outlet 24 and blow foot air outlet 25, wherein windshield air outlet 23 upward, for blowing to the windshield of Chinese herbaceous peony
Place；Face air outlet 24 is blown towards centre, for blowing to the face of driver；Foot air outlet 25 is blown downward, for blowing to driving
The foot of member.
Further, as shown in Figure 1, further including tuning air-valve 14, tuning air-valve 14 is mounted on the first interior heat exchanger 4
And second between interior heat exchanger 5, for adjusting wind direction.Tuning air-valve 14 and fresh air air-valve 13 can use motor-driven valve.
As shown in Fig. 2, the embodiment of the present invention also provides a kind of control method of automobile heat pump system, automobile heat pump system is adopted
With above-mentioned automobile heat pump system, control method includes heating mode, and heating mode includes: to be connected to going out for the first vehicle external heat exchanger 2
Mouth, first order compressor, the first interior heat exchanger 4, high stage compressor, the second interior heat exchanger 5, heating expansion valve 15 and the
The import of one vehicle external heat exchanger 2.
Further, as shown in Fig. 2, heating mode further include:
The first shut-off valve 18 and the second shut-off valve 19 are opened, a, b interface of low pressure triple valve 11 is connected to, is pressed in connection first
A, b interface of triple valve 16 are connected to a, b interface for pressing triple valve 17 in second, are connected to a, b interface of Triple Valve with High Pressure 10.
Further, as shown in figure 3, further including refrigeration mode, refrigeration mode includes:
The first shut-off valve 18 and the second shut-off valve 19 are closed, b, c interface of low pressure triple valve 11 is connected to, is pressed in connection first
A, c interface of triple valve 16 are connected to b, c interface for pressing triple valve 17 in second, are connected to a, c interface of Triple Valve with High Pressure 10.
Further, as shown in figure 4, further including dehumidification mode, dehumidification mode includes:
The first shut-off valve 18 and the second shut-off valve 19 are closed, b, c interface of low pressure triple valve 11 is connected to, is pressed in connection first
A, c interface of triple valve 16 are connected to b, c interface for pressing triple valve 17 in second, are connected to a, b interface of Triple Valve with High Pressure 10.
Specifically, refrigerant becomes the two-phase fluid of low-temp low-pressure after the throttling of refrigeration expansion valve 8, then in the first car
Evaporation endothermic in heat exchanger 4, so that the temperature of the outer surface of the first interior heat exchanger 4 reaches lower state；Refrigerant evaporation
Steam after heat absorption as low-temp low-pressure flows into compression unit 1 after regenerator 9 and gas-liquid separator 6, then by first order pressure
Contracting machine is compressed into the gaseous state pressed in high temperature；The refrigerant pressed in high temperature is cooled into through the second vehicle external heat exchanger 7 presses in low temperature
High stage compressor is flowed into after gas, is discharged after the second second compression reaches a high temperature high pressure conditions from compression unit 1, into second
Interior heat exchanger 5 is flowed into the first vehicle external heat exchanger 2 after the air cooling in air-conditioning duct 20, is further cooled；Then it flows
To regenerator 9 and refrigeration expansion valve 8, a circulation is completed.The humidity being blown into through the interior fan 12 in air-conditioning duct 20 is higher
Air flow through the surface of the interior heat exchanger 4 of temperature lower first, humidity reduces while cooling；Then low temperature and low humidity
It when air flows through the second interior heat exchanger 5, is heated to form that temperature is higher, the lower air of humidity, car room is then sent to, to reach
To the purpose to dehumidify to car room air.
Further, as shown in figure 5, further including defrosting mode, defrosting mode includes:
The first shut-off valve 18 and the second shut-off valve 19 are closed, b, c interface of low pressure triple valve 11 is connected to, is pressed in connection first
A, c interface of triple valve 16 are connected to b, c interface for pressing triple valve 17 in second, are connected to a, c interface of Triple Valve with High Pressure 10.It removes
Refrigerant flow direction under white mode is identical as the refrigerant flow direction under refrigeration mode, utilizes the first order compressor of compression unit 1
Exhaust and the exhaust of high stage compressor the second vehicle external heat exchanger 7 and the first vehicle external heat exchanger 2 are heated respectively so that
The frost layer for being attached to the surface of the second vehicle external heat exchanger 7 and the first vehicle external heat exchanger 2 is gradually melted, to reach the mesh of defrosting
's.The mode is used primarily under winter conditions, using heating mode for a period of time after, by enable defrosting mode removed
Frost avoids the heat exchange property for influencing heat exchanger, enables the system to enough keep high-efficiency operation for a long time.
It can be seen from the above embodiments that, automobile heat pump system provided by the invention and its control method, wherein automobile
Heat pump system includes that the first interior heat exchanger in the air-conditioning duct that air supply direction is successively installed on automobile and the second car change
Hot device further includes that the compression unit being installed on outside air-conditioning duct, heating expansion valve and the first vehicle external heat exchanger, compression unit include
First order compressor and high stage compressor；The outlet of first vehicle external heat exchanger, first order compressor, the first interior heat exchanger,
The import of high stage compressor, the second interior heat exchanger, heating expansion valve and the first vehicle external heat exchanger is sequentially connected, to form system
Soft circulation circuit.The automobile heat pump system carries out the exhaust of the first order compressor of compression unit using the first interior heat exchanger
It is cooling, the problem of can transfiniting to avoid compressor exhaust temperature under extreme low temperature operating condition；The first interior heat exchanger pair is utilized simultaneously
The lower air of temperature for having just enter into air-conditioning duct is preheated, and intercooled waste heat is effectively recycled, and promotes winter condition
Heating capacity, the performance of electric vehicle heat pump system under extreme low temperature operating condition can be obviously improved, effectively promoted automobile heat pump system
The wide warm area adaptability of system, widens extreme severe cold area for the scope of application of automobile heat pump system.
Further, electric vehicle heat pump system provided by the invention takes into account the performance of cooling and warming operating condition, Ke Yiming
The aobvious performance for promoting electric vehicle heat pump system under thermal extremes operating condition and extreme low temperature operating condition.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of automobile heat pump system, including the first interior heat exchange in the air-conditioning duct that air supply direction is successively installed on automobile
Device and the second interior heat exchanger, which is characterized in that further include the compression unit being installed on outside the air-conditioning duct, heating expansion valve
With the first vehicle external heat exchanger, the compression unit includes first order compressor and high stage compressor；It exchanges heat outside first vehicle
The outlet of device, the first order compressor, the first interior heat exchanger, the high stage compressor, second car change
The import of hot device, the heating expansion valve and the first vehicle external heat exchanger is sequentially connected, to form heating circulation loop.
2. automobile heat pump system according to claim 1, which is characterized in that it further include the second vehicle external heat exchanger, described
The first interface of two vehicle external heat exchangers is connected to the import of the first vehicle external heat exchanger, second vehicle by the first shut-off valve
The second interface of external heat exchanger is connected to the outlet of the first vehicle external heat exchanger by the second shut-off valve.
3. automobile heat pump system according to claim 2, which is characterized in that further include low pressure triple valve, press three in first
Port valve presses triple valve, Triple Valve with High Pressure and refrigeration expansion valve in second；
The first interface of the low pressure triple valve is connected to the outlet of the first vehicle external heat exchanger, and the of the low pressure triple valve
Two interfaces are connected to the import of the first order compressor, and it is interior that the third interface of the low pressure triple valve is connected to described first
The outlet of heat exchanger；The refrigeration expansion valve is set to the import of the first interface and the first interior heat exchanger of the low pressure triple valve
Between；
It presses the first interface of triple valve to be connected to the outlet of the first order compressor in described first, presses threeway in described first
The second interface of valve is connected to the import of the described first interior heat exchanger, presses the third interface of triple valve to be connected in described first
The second interface of the second vehicle external heat exchanger；
It presses the first interface of triple valve to be connected to the outlet of the described first interior heat exchanger in described second, presses three in described second
The second interface of port valve is connected to the import of the high stage compressor, presses the third interface of triple valve to be connected in described second
The first interface of the second vehicle external heat exchanger；
The first interface of the Triple Valve with High Pressure is connected to the outlet of the high stage compressor, and the second of the Triple Valve with High Pressure
Interface is connected to the import of the described second interior heat exchanger, and the third interface of the Triple Valve with High Pressure is connected to outside first vehicle
The import of heat exchanger.
4. automobile heat pump system according to claim 3, which is characterized in that it further include regenerator, the of the regenerator
Between the outlet of one the described first interior heat exchanger of heat exchange side series connection access and the third interface of the low pressure triple valve, described time
Second heat exchange side series connection of hot device accesses between the refrigeration expansion valve and the first interface of the low pressure triple valve.
5. automobile heat pump system according to claim 3, which is characterized in that it further include gas-liquid separator, the gas-liquid point
From the second interface that the import of device is connected to the low pressure triple valve, the outlet of the gas-liquid separator is connected to the first order
The import of compressor.
6. a kind of control method of automobile heat pump system, which is characterized in that the automobile heat pump system use as claim 1 to
Automobile heat pump system described in any one of 5, the control method include heating mode, and the heating mode includes: connection institute
State the outlet of the first vehicle external heat exchanger, the first order compressor, the first interior heat exchanger, the high stage compressor,
The import of described second interior heat exchanger, the heating expansion valve and the first vehicle external heat exchanger.
7. control method according to claim 6, which is characterized in that the heating mode includes:
The first shut-off valve and the second shut-off valve are opened, the first interface and second interface of low pressure triple valve are connected to, is connected in first
The first interface and second interface of triple valve are pressed, the first interface and second interface of triple valve are pressed in connection second, is connected to high pressure
The first interface and second interface of triple valve.
8. control method according to claim 7, which is characterized in that further include refrigeration mode, the refrigeration mode includes:
First shut-off valve and second shut-off valve are closed, the second interface and third for being connected to the low pressure triple valve connect
Mouthful, the first interface and third interface of triple valve are pressed in connection described first, press the second of triple valve to connect in connection described second
Mouth and third interface, are connected to the first interface and third interface of the Triple Valve with High Pressure.
9. control method according to claim 8, which is characterized in that further include dehumidification mode, the dehumidification mode includes:
First shut-off valve and second shut-off valve are closed, the second interface and third for being connected to the low pressure triple valve connect
Mouthful, the first interface and third interface of triple valve are pressed in connection described first, press the second of triple valve to connect in connection described second
Mouth and third interface, are connected to the first interface and second interface of the Triple Valve with High Pressure.
10. control method according to claim 7, which is characterized in that it further include defrosting mode, the defrosting mode packet
It includes:
First shut-off valve and second shut-off valve are closed, the second interface and third for being connected to the low pressure triple valve connect
Mouthful, the first interface and third interface of triple valve are pressed in connection described first, press the second of triple valve to connect in connection described second
Mouth and third interface, are connected to the first interface and third interface of the Triple Valve with High Pressure.
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| CN201910900566.2A CN110497769A (en) | 2019-09-23 | 2019-09-23 | Automobile heat pump system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910900566.2A CN110497769A (en) | 2019-09-23 | 2019-09-23 | Automobile heat pump system and its control method |
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Family
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Cited By (3)
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| WO2023103368A1 (en) * | 2021-12-07 | 2023-06-15 | 青岛海尔空调器有限总公司 | Vehicle-mounted air conditioning unit and control method therefor |
| WO2023103370A1 (en) * | 2021-12-07 | 2023-06-15 | 青岛海尔空调器有限总公司 | Vehicle-mounted air conditioning unit and control method thereof |
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