CN108332455A - Refrigerant circulation circuit and method for running refrigerant circulation circuit - Google Patents
Refrigerant circulation circuit and method for running refrigerant circulation circuit Download PDFInfo
- Publication number
- CN108332455A CN108332455A CN201810026548.1A CN201810026548A CN108332455A CN 108332455 A CN108332455 A CN 108332455A CN 201810026548 A CN201810026548 A CN 201810026548A CN 108332455 A CN108332455 A CN 108332455A
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- Prior art keywords
- refrigerant
- circulation circuit
- compressor
- condenser
- heat
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 239000002826 coolant Substances 0.000 claims description 22
- 239000012071 phase Substances 0.000 claims description 21
- 239000007791 liquid phase Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000005325 percolation Methods 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 16
- 238000005057 refrigeration Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- KVIPHDKUOLVVQN-UHFFFAOYSA-N ethene;hydrate Chemical group O.C=C KVIPHDKUOLVVQN-UHFFFAOYSA-N 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
-
- 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
- F25B41/00—Fluid-circulation arrangements
-
- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- 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
- B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/23—Separators
-
- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
Abstract
The present invention relates to a kind of refrigerant circulation circuits,Particularly for the motor vehicle with electric drive or hybrid drive,Condenser (3) is wherein provided in a manner of being connected in series with along flow of refrigerant direction,Expansion mechanism (5),Separator (6) and expansion mechanism (7) as middle pressure bottle,And battery cooler (11) and aerial cooler (12) are then provided in a manner of being connected in parallel,Accordingly main compressor (1) and auxiliary compressor (2) are provided in pipeline in parallel,Wherein the high-pressure side of main compressor (1) is connect with the suction side of auxiliary compressor (2),So that by means of the disabling mechanism (18) and multi-way valve (16) in the high-tension line of main compressor (1),Main compressor (1) and auxiliary compressor (2) can be connected in series with or be connected in parallel,And separator (6) is connect on gas side with the suction side of auxiliary compressor (2).The invention further relates to a kind of methods for running refrigerant circulation circuit.
Description
Technical field
The present invention relates to a kind of refrigerant circulation circuit for motor vehicle, the refrigerant circulation circuit have relative to
Such extra high cooling power of conventional refrigeration cycle loop.The refrigerant circulation circuit is used especially for electric drive
The motor vehicle of device or hybrid drive.Particularity in this refrigerant circulation circuit is, especially in electric vehicle or mixed
It closes in power car, in order to realize the optimal conditions in running and in the charge operation of battery, to battery or storage
The cooling of battery and to be cooled down to the cooling of electronic unit and additionally to inner space to carry out air conditioning be necessary
's.Demand especially to the quick charge of battery causes the particular/special requirement to the refrigeration facilities of motor vehicle, because battery is best
The cooling during the charging process of charging and battery it is related.
Background technology
Different design schemes for the refrigerant circulation circuit with electric drive or the motor vehicle of hybrid drive
It is well known in the art.
In the prior art, known a kind of bypass of having for motor vehicle such as from 2009/0317697 A1 of US
Refrigeration facilities, the refrigeration facilities are suitable for providing battery cooling by means of battery cooler.
In addition, know from 103 13 850 A1 of DE it is a kind of for combination refrigeration facilities operation and operation of heat pump, especially
It is used for the refrigerant circulation circuit of motor vehicle, and the refrigerant circulation loop has the compression set heat pump of two-stage.In the cause
It is set in refrigerant cycle circuit there are two the compressor being connected in series with, the compressor realizes the compression of two-stage, wherein circulation loop
In addition optimize to can also realize the operation of heat pump of entire facility.
Invention content
Now, the object of the present invention is to provide a kind of particularly for motor-driven with electric drive or hybrid drive
The refrigerant circulation circuit of vehicle, the refrigerant circulation circuit is in addition to the purpose in order to freeze to cabin progress air conditioning
It is also adapted to optimally provide refrigeration for battery and electronic unit in running and in the charge operation of battery outside.
Here, the object of the present invention is to the connection by the component provided in circulation loop is realized as far as possible
More operating status, such as running, charge operation and operation of heat pump.
The purpose is realized by following refrigerant circulation circuit and method, in the refrigerant circulation loop, along cause
Cryogen flow direction be provided in a manner of being connected in series with condenser, expansion mechanism, in pressure bottle separator and expanding machine
Structure, and battery cooler and aerial cooler are and then provided in a manner of being connected in parallel, accordingly in pipeline in parallel
It is provided with main compressor and auxiliary compressor, wherein the high-pressure side of the main compressor is connect with the suction side of the auxiliary compressor,
So that by means of the disabling mechanism and multi-way valve in the high-tension line of the main compressor, the main compressor and the secondary pressure
Contracting machine can be connected in series with or be connected in parallel, and the separator connects on gas side with the suction side of the auxiliary compressor
Connect, and in the method, in the charge operation of battery, by refrigerant in main compressor and in auxiliary compressor two-stage
It compresses on ground；The refrigerant is then set to flow condenser to radiate；During the refrigerant is depressurized in expansion mechanism
Pressure；The gas phase of the refrigerant is sucked by the auxiliary compressor；And the liquid phase of the refrigerant is steamed in battery cooler
It sends out and is sucked by the main compressor, or in the operation of heat pump in single-stage, by refrigerant in the main compressor
Compress to single-stage；The refrigerant is then set to flow condenser to proceed to the heat dissipation of inner space；By the refrigerant
It is pressed in being depressurized in expansion mechanism；The gas phase of the refrigerant is sucked by the main compressor；And the refrigerant
Liquid phase is evaporated in heat pump heat transmitter and is sucked by the main compressor, or in the operation of heat pump of two-stage, by refrigeration
Agent is compressed to two-stage in main compressor and in auxiliary compressor；The refrigerant is then set to flow condenser to proceed to vehicle
The heat dissipation of inner space；It is pressed during the refrigerant is depressurized in expansion mechanism；Described in auxiliary compressor sucking
The gas phase of refrigerant；And the liquid phase of the refrigerant in heat pump heat transmitter, in aerial cooler and in the battery
It evaporates in cooler and is sucked by the main compressor simultaneously.Improvement project is given below.
The purpose of the present invention realizes particularly by a kind of refrigerant circulation circuit, the refrigerant circulation circuit specifically for
Motor vehicle with electric drive or hybrid drive optimizes.Here, refrigerant circulation circuit is along flow of refrigerant direction
Shown by the setting of components described below.Refrigerant flows condenser first, and then flow expansion mechanism, then flow separator with
And the expansion mechanism that percolation is other, the separator are also referred to as the pressure bottle as in the operation of two-stage and claim in the operation of single-stage
As collector, refrigerant separator or receiver,.The component being previously mentioned is arranged with being connected in series with.Next, refrigerant flows
It is used as the heat transmitter of evaporator, i.e. battery cooler and aerial cooler, the battery cooler and aerial cooler are in parallel
Setting.Refrigerant is sucked as refrigerant steam by main compressor after percolation battery cooler and aerial cooler.In addition to
Main compressor is equipped with auxiliary compressor in refrigerant circulation circuit.Main compressor and auxiliary compressor access cycle parallel to each other
In circuit, wherein being provided with to the interconnecting piece of the suction side of auxiliary compressor ended in main compressor downstream so that main compression
Machine and auxiliary compressor can not only be connected in parallel and can be connected in series with.It is additionally provided with thus in the high-tension line of main compressor
Disabling mechanism and the multi-way valve in the interconnecting piece of main compressor circuit and auxiliary compressor circuit.
Separator herein usually have for fluid-gas-refrigerant mixture entrance and outlet for gas with
And the outlet for liquid.The outlet for gas of separator is also referred to as gas side and the gas side and auxiliary compressor
Suction side connects.
Refrigerant circulation circuit is connected in parallel together with illustrated component and described main compressor and auxiliary compressor
With the possibility being connected in series with, it is adapted for carrying out is just used for electric vehicle or hybrid vehicle in a particularly advantageous manner
Various operating statuses, because can be realized different operating statuses by means of illustrated refrigerant circulation circuit.
Preferably, disabling mechanism is arranged in the interconnecting piece of the suction side of the gas side and auxiliary compressor of separator.
Advantageously, expansion mechanism is separately associated with battery cooler and aerial cooler.It is then able to independence
Ground and with whole equipment in terms of adjusting in phase and each heat transfer of control in the case where considering the specific pressure drop of heat transmitter
Device.
Advantageously, additional coolant circulation circuit is constituted, there is the additional coolant circulation circuit pump, heat pump to pass
Hot device and coolant-air-cooler, wherein heat pump heat transmitter is together with associated expansion mechanism in refrigerant circulation circuit
It is arranged in parallel with battery cooler and aerial cooler.As coolant, use of water is preferred or water-ethylene glycol-mixture, makes
It obtains coolant-air-cooler and is also referred to as used as water-air-cooler.Coolant-air-cooler is about its Applicable temperature model
It encloses and is also referred to as used as cryogenic heat transfer device or as high temperature heat transfer device.
A particularly preferred design scheme according to the present invention, additional condenser alternatively or are accumulated via multi-way valve
(kumulativ) be connected in coolant circulation circuit and refrigerant circulation circuit in.Additional condenser is in refrigerant cycle
It is arranged in condenser downstream along flow of refrigerant direction in circuit.
When auxiliary compressor is constituted the compressor that main compressor in turn is configured to two-stage in a manner of being integrated into main compressor
When, thus generate the especially preferred design scheme structurally of circulation loop.
Method of the purpose of the present invention also by a kind of for running refrigerant circulation circuit is realized, wherein in running
In in air conditioner facility pattern, refrigerant is compressed to single-stage in main compressor first, then make refrigerant flow condenser
To radiate, and pressed in being then depressurized to refrigerant in expansion mechanism.The gas phase of subsequent refrigerant in the separator
It is sucked by main compressor, or is throttled according to the stress level in the aspiration for entering compressor, or be consistent with stress level
Ground is conveyed to compressor, and finally by the liquid phase of refrigerant in aerial cooler and battery cooler evaporation simultaneously and with
It is sucked afterwards by main compressor.In this mode, it works to refrigerant circulation circuit single-stage and auxiliary compressor does not work.In this way
The cooling power of the refrigeration cycle loop of connection corresponds to the conventional cooling power of motor vehicle air conditioning facility.
In the technique of single-stage, as an alternative, in separator upstream without decompression, so that being added has complete percolation
Cross section, the expansion mechanism that is connected to upstream, without throttling to refrigerant.
Advantageously, refrigerant is separately dropped by means of expansion mechanism in aerial cooler and battery cooler upstream
Pressure, the expansion mechanism are associated with each heat transmitter.
In addition, the purpose of the present invention is realized by a kind of method for running refrigerant circulation circuit, wherein in battery
Charge operation in, compress refrigeration to two-stage by the main compressor and auxiliary compressor compression refrigeration agent being connected in series with first
Agent.Then, so that refrigerant is flowed condenser to radiate, and be followed by depressurized to refrigerant in expansion mechanism
Pressure.The gas phase of refrigerant in the circuit by auxiliary compressor suck and the liquid phase of refrigerant is evaporated in battery cooler and by
Main compressor sucks.In this operational mode of exclusive charge operation, aerial cooler does not work, so as to by institute
Some cooling capacities and cooling power are run for charge operation and particularly for quick charge.It is self-evident, as an alternative, energy
It is enough that cooling power is used for the air conditioning of inner space to reduce charging cooling power.
It is particularly advantageous that being also connected in series in the additional of downstream by means of refrigerant circulation circuit other than condenser
The heat dissipation of condenser secondary refrigerant.
Method of the purpose of the present invention also by a kind of for running refrigerant circulation circuit is realized, wherein refrigerant is existed
It is compressed to single-stage in main compressor in the operation of heat pump of single-stage, the refrigerant is then made to flow condenser to reject heat to vehicle
It inner space and presses in being depressurized to refrigerant in expansion mechanism.Finally by the gas phase sucking of main compressor refrigerant
It the liquid phase heat pump of the cooling by evaporation agent in heat pump heat transmitter and is sucked by main compressor, to closed loop.If
Heat demand is relatively small, then the operational mode is especially advantageous.
Method of the purpose of the present invention also by a kind of for running refrigerant circulation circuit is realized, wherein in the heat of two-stage
Not only compression refrigeration agent compresses refrigerant to two-stage in turn in main compressor but also in auxiliary compressor in pump operation.Then,
Refrigerant is set to flow condenser to reject heat to inner space.In expansion mechanism, refrigerant is depressurized to middle pressure and passes through
Auxiliary compressor sucks the gas phase of refrigerant.The liquid phase of refrigerant in heat pump heat transmitter, in aerial cooler and in battery
It evaporates in cooler and is sucked by main compressor simultaneously.In this operation type, especially a high proportion of heat is via warm
Pumping function is supplied to inner space.
Especially preferably, the heat pump system according to aforementioned variant form is improved in the following way,：Additionally from coolant
Heat absorption of the refrigerant in heat pump heat transmitter, wherein the coolant circulation circuit heat pump in heat pump heat transmitter are carried out in circulation loop
With refrigerant circulation circuit thermally coupled.In refrigeration facilities operation, water condenser is connected in coolant circulation circuit.
Preceding method advantageously improves in the following way：It disconnects specially in the charge operation of accumulator in order in battery
It radiates in cooler, and additional heat-transfer area.
The method equally advantageous improvement in the following way：It disconnects specially in charge operation in order in coolant-
It is radiated in aerial cooler and additional heat-transfer area or entire surface can be made due to being not used by by other component
With.
Preferably, the method is supplemented in the following way：It disconnects specially in charge operation in order in condenser
In radiated and additional heat-transfer area, or the power at constant condenser is embodied as driven nature in higher high pressure
The temperature difference.
Description of the drawings
Obtained from the description next to embodiment with reference to attached drawing the other details of the design scheme of the present invention, feature and
Advantage.Attached drawing is shown：
Fig. 1 shows tool, and there are two the refrigerant circulation circuits of compressor；
Fig. 2 shows tool, there are two the refrigerant circulation circuits of compressor and the medium pressure gas pipeline that can end；
Fig. 3 shows the refrigerant circulation circuit combined with coolant circulation circuit；
Fig. 4 shows the functional diagram of the design scheme of the two-stage of refrigerant circulation circuit in operation of heat pump；
Fig. 5 shows the refrigerant circulation circuit with the battery cooler under middle voltage levels；And
Fig. 6 shows to have the battery cooler under low voltage level and be presented in the optional gas of low pressure or high-pressure horizontal
Enter the refrigerant circulation circuit in portion.
Specific implementation mode
It is shown in FIG. 1 a design scheme of refrigerant circulation circuit, the design scheme is by means of the portion that is included
Part describes basic principle.Main compressor 1 and auxiliary compressor 2 are by means of disabling mechanism 16 and 18 not only for fortune when being connected in series with
It goes and is added in refrigerant circulation circuit for operation when being connected in parallel.Refrigerant circulation circuit is on high-pressure horizontal
The expansion mechanism 5 and separator 6 in downstream are connected in series in condenser 3 and streamwise.As long as in refrigerant
Voltage levels carry out the operation of two-stage, then pressure bottle in the also referred to as conduct of separator 6.If compressed with carrying out single-stage, separator 6
Function simplify as in the collector by the first expansion stages downstream of expansion mechanism 5 for the refrigerant of liquid, or expansion
Mechanism 5 is run with completely open cross section and realizes the expansion via expansion mechanism 7.Separation is left under medium-pressure or high pressure
The refrigerant steam of device 6 mutually reaches the suction side of auxiliary compressor 2 via pipeline.Come from the refrigerant of the liquid of separator 6 swollen
Be depressurized in swollen mechanism 7 low pressure and then at the same distribute to customer, battery cooler 11 and aerial cooler 12.Go out autobiography
The refrigerant of the evaporation of hot device is then jointly conveyed to the suction side of main compressor 1.As long as circulation loop will also be detailed as after
It is run to single-stage as thin description, then by opening and being pressed for the disabling mechanism 18 of the high pressure gas of main compressor 1
The refrigerant of contracting directly reaches in condenser 3.If running has the facility for the compressor 1,2 being connected in series with, closes and use
In the high pressure gas of main compressor 1 disabling mechanism 18 and come from the refrigerant steam of separator 6 via connecting line and more
Road valve 16 reach auxiliary compressor 2 suction side, the refrigerant steam compressed under high pressure by the auxiliary compressor and then to
Up in condenser 3.
In the method for operation of an alternative, refrigerant circulation circuit also can in parallel be run by means of compressor 1,2.
The disabling mechanism 18 of the high pressure gas for main compressor 1 is not only opened herein but also connects the parallel connection for auxiliary compressor 2
Circuit so that the multi-way valve 16 in refrigerant circulation circuit can realize the suction side to auxiliary compressor 2 of refrigerant and
Connection stream.
The component consistent with Fig. 1 is shown again in fig. 2, there is following particularity：Come from the gas phase of separator 6 via even
The suction side that road reaches auxiliary compressor 2 is taken over, wherein executing the disabling mechanism 17 for medium pressure gas in the connecting line.
Compressor can be switched to series model from paralleling model by shown refrigerant circulation circuit.
It is preferable, however, that compressor is connected in series with.Both design schemes for being connected in parallel and being connected in series with it is special
Advantage is to come out the liquid phase separation of refrigerant, and the gas phase of refrigerant is directly transported from separator 6 to corresponding compression
Thus machine reduces the pressure loss inside evaporator.As a result, when there is no gas phase or a small amount of gas phase to reach in evaporator together
When, distribution of the liquid and gas inside evaporator can be improved.If compressor is connected in series with, the first expansion mechanism 5
It is responsible for main decompression.Additionally, the flowing of gas phase is controlled or manipulated via disabling mechanism 17.
The combination of refrigerant circulation circuit and coolant circulation circuit composition, the cause in wherein Fig. 1 and 2 is shown in FIG. 3
Refrigerant cycle circuit is augmented with heat pump heat transmitter 10 together with affiliated expansion mechanism 9.In addition, equipped with for coolant circulation to be returned
The additional condenser 4 that road is connected with refrigerant circulation circuit calorifics, the additional condenser are configured to water condenser.Additional condensation
Device 4 is added in coolant circulation circuit, and the coolant circulation circuit is driven by the pump 13 of coolant circulation circuit.By cold
But the multi-way valve 15 of agent circulation loop manipulates the flow path of the parallel line of coolant circulation circuit.First flow path is from pump
13 extend to heat pump heat transmitter 10 via multi-way valve 15 and then extend to pump 13, the cryogenic heat transfer via cryogenic heat transfer device
Device is also referred to as used as coolant-air-cooler 14.Shown parallel line is from the multi-way valve 15 of coolant circulation circuit to additional
Condenser 4 and then to coolant-air-cooler 14.
Coolant circulation circuit is necessary particularly with the refrigerant circulation circuit for being used for operation of heat pump is connected, and this
Two circulation loops are via 10 thermally coupled of additional condenser 4 and heat pump heat transmitter.
The design of the present invention becomes especially clear according to the circulation loop being shown in FIG. 3, wherein being returned in refrigerant cycle
Compressor stage is constituted in turn there are two being constituted within road middle voltage levels.The two compressor stages are herein preferably by means of two points
The compressor 1 and 2 opened realizes that wherein particularity is, the two compressors can be run in a manner of being connected in series with also can
It is run in a manner of being connected in parallel.
System preferably comprises the application of water condenser 4, and the water condenser at least has relative to conventional aerial condenser
There is power that is identical or improving.For the power of raising, especially component 4,8,11 and 14 is important.These component needles
To in the charge operation in the normal operation of the facility, cooling operation or operation of heat pump or when refrigerant mass flow improves
Different power designs.It is especially difficult, it is sufficient to transport and return to pressure oil again there are refrigerant in power hour
The flowing velocity of contracting machine.In charge operation, the quality stream and then its flowing velocity bigger of refrigerant, and correspondingly,
The free necessary bigger of flow cross section, so as to which pressure loss is maintained in rational range.Heat transmitter is also required to greatly
Surface, so as to transmit corresponding power.Here, focus especially water condenser 4, battery cooler 11 and coolant-
Air-cooler 14, wherein with slightly larger heat-transfer area heat transmitter 4 due to the medium in heat transfer part and heat transfer
The high thermal coefficient of the material of device 4 and meet corresponding power requirement and will not cause in terms of oily transport and be worth mentioning
The problem of.It is significantly heavier that want is battery cooler 11 and coolant-air-cooler 14.It is optional in battery cooler 11
Ground has been provided with heat transfer pipe in heat transmitter, the heat transfer pipe under corresponding power demand by switchable valve, borrow
Help the valve cut-out of spring force self-regulation, the valve by means of spring force self-regulation is opened under corresponding pressure difference.Coolant-
Air-heat transmitter 14 is sized to so that the heat transmitter is responsible for other heat sources and corresponding power output can be made to arrive
Ambient enviroment.In charge operation, does not need these power and it can be fully supplied to charging process.It is filled in winter
When electric, inner space is heated.
Here, heat transfer area is reduced on the whole, because only connecting additional face under special service condition.Thus according to
Parameter advantageously improves the flowing velocity in refrigerant circulation circuit.
Water condenser 4 is worked in identical external dimensions with the temperature difference of bigger, and thus, it is possible to the structures for heat transmitter 4
The higher thermal power of bulk transport.
The two compressors 1,2 can have oil eliminator/muffler that upstream is connected on suction side.In general, oily
Separator is arranged on high-pressure side.For distribution reason, the two compressors 1,2 should be connected on oil eliminator.Muffler goes out
It is constituted on high-pressure side in the reason of the noise emissions.
It is typically divided into two kinds of cycles of operation.In cooling and heating operation, refrigerant circulation circuit can be by means of pressure
Run to contracting machine single-stage.Naturally, compression for two-stage and applying the possibility for detaching refrigerant in middle pressure bottle, production for this
The advantages of raw energy aspect and technical aspect (distribution evenly of the refrigerant in battery cooler).Therefore, this
Optionally propose.In charge operation, the two compressors are all run in two-stage or single-stage technique in any situation.
Be shown in FIG. 4 the heat pump circuit of refrigerant circulation circuit, the heat pump circuit two-stage with main compressor 1 and pair
The mode of compressor 2 being connected in series with is constituted.Refrigerant condenses in condenser 3, is depressured in expansion mechanism 5, and with
By the gas phase and liquid phase separation of refrigerant in separator 6 afterwards.Gas phase is conveyed to the suction side of auxiliary compressor 2 in middle pressure, and
Liquid phase distributes to heat pump heat transmitter 10, battery cooler 11 and aerial cooler 12 simultaneously, and wherein expansion mechanism 7,8 and 9 is distinguished
It is associated with heat transmitter.Finally, the refrigerant evaporated in heat transmitter 10,11,12 pools together and conducts to main compression
The suction side of machine 1.
The unshowned variant scheme of heat pump circuit is that there are two condensers for setting.First condenser is used for vehicle
The heater of inner space is mounted on inside the air conditioner facility of vehicle.Second condenser is normal aerial condenser, basis
One preferred design scheme can be configured to water condenser.
There are three the realities of heat transmitter 10,11,12 for the shown tool inside refrigerant system for cooling by evaporation agent
Scheme is applied obviously to be extended according to application field by multi-evaporator device.This is only related to the position of thermostatic expansion valve, institute
It states thermostatic expansion valve and has been separately equipped with cutting function.
View of the alternative in Fig. 4, heat pump circuit also can be constituted to single-stage, and wherein main compressor 1 is fed directly to cold
Condenser 3 and the suction side that gas phase is conveyed to main compressor 1 from separator.Here, via heat pump heat transmitter 10 from cooling
Heat is conveyed in agent circulation loop.
In heat pump circuit, condenser 3 exports heat to the inner space of motor vehicle.Shown circulation loop guiding
The advantages of portion, is, few icing occurs in corresponding heat transmitter and provides the good storage capacity of system.Additionally,
Battery cooler 11, aerial cooler 12 and heat pump heat transmitter 10 heat can be used for heat pump.In the structure with single-stage
In alternative at the heat pump circuit of scheme, expansion mechanism 5 is run with completely open cross section so that therefore only by means of
Main compressor 1 is compressed and auxiliary compressor 2 does not work in the running status.Particularly advantageously, battery cooler heat
Inner space in the circuit for heating motor vehicle.
The refrigerant circulation circuit of remodeling is shown in FIG. 5, wherein particularity is, battery cooler 11 is by means of pump 19
It is directly supplied with the refrigerant for the liquid for coming from separator 6, and the refrigerant for evaporation is defeated again on the stress level
Give the separator 6 being passed through in the space with gas phase.Aerial cooler 12 is supplied with refrigerant simultaneously with battery cooler 11,
However the refrigerant of evaporation is then conducted to the suction side of main compressor 1.Expansion mechanism 7 is closed with aerial cooler 12 respectively
Connection.Second compression stage is realized by auxiliary compressor 2, and refrigerant is conveyed to condenser 3 later.In this variant form, specially
It is cooled down for battery, stress level is low pressure or middle pressure.
One the advantage is that battery cooler 11 can be used as the evaporator operation being filled completely, and compressor is not
It can be subjected to hydraulic shock.The advantageously evaporation temperature level accurately remained unchanged on entire heat-transfer area.
Be shown in FIG. 6 about the alternative according to the design scheme of Fig. 5, wherein battery cooler 11 again with air
Cooler 12 is fed with the refrigerant for the liquid for coming from separator 6 simultaneously.However, the refrigerant liquid for coming from the separator exists
It is depressured in expansion mechanism 8 and adjusts corresponding stress level.In a similar way, expansion mechanism 7 and aerial cooler 12
It is associated.Or the refrigerant steam for coming from battery cooler 11 reaches main compressor 1 via multi-way valve 20 according to stress level
Or suction side reach auxiliary compressor 2 suction side.
Battery cooler 11 with expansion mechanism 8 is added via multi-way valve 20 in refrigerant circulation circuit, wherein passing through
Multi-way valve 20 generates following possibility：Or the refrigerant mass flow for coming from battery cooler 11 to be added to the middle pressure of refrigerant
Or being added in quality stream in the low pressure mass stream of refrigerant.
Shown refrigerant circulation circuit can be additionally equipped between low pressure side and high pressure side or in medium voltage side
The heat transmitter of inside between high-pressure side.Furthermore it is possible to which the expansion device by acting replaces irreversible expansion device.
Both variations are used for the improved efficiency of circulation loop.
Reference numerals list
1 main compressor
2 auxiliary compressors
3 condensers
4 additional condensers, water condenser, heat transmitter
It is pressed in 5 expansion mechanisms
6 separators
7 expansion mechanism low pressure
8 expansion mechanism low pressure
9 expansion mechanism low pressure
10 heat pump heat transmitters, heat transmitter
11 battery coolers, electronic cooler, heat transmitter
12 aerial coolers, inner space evaporator, heat transmitter
13 pump coolant circulation circuits
14 coolants-air-cooler
15 multi-way valve coolant circulation circuits
16 multi-way valve refrigerant circulation circuits, disabling mechanism
17 disabling mechanism medium pressure gas
18 disabling mechanism high pressure gas main compressors
19 refrigerant pumps
20 multi-way valve battery cooler circulation loop branches
Claims (16)
1. a kind of refrigerant circulation circuit, particularly for the refrigerant circulation with electric drive or the motor vehicle of hybrid drive
Circuit, wherein being provided with condenser (3), expansion mechanism (5) in a manner of being connected in series with along flow of refrigerant direction, being pressed in
The separator (6) and expansion mechanism (7) of bottle, and battery cooler (11) and sky are and then provided in a manner of being connected in parallel
Gas Cooler (12) is provided with main compressor (1) and auxiliary compressor (2), wherein the main compression in pipeline in parallel accordingly
The high-pressure side of machine (1) is connect with the suction side of the auxiliary compressor (2) so that by means of the high pressure in the main compressor (1)
Disabling mechanism (18) in circuit and multi-way valve (16), the main compressor (1) and the auxiliary compressor (2) can be connected in series with
Or be connected in parallel, and the separator (6) is connect on gas side with the suction side of the auxiliary compressor (2).
2. refrigerant circulation circuit according to claim 1,
It is characterized in that,
It is provided with disabling mechanism in the interconnecting piece of the suction side of the gas side and auxiliary compressor (2) of the separator (6)
(17)。
3. refrigerant circulation circuit according to claim 1 or 2,
It is characterized in that,
Expansion mechanism (7,8) is individually associated with the battery cooler (11) and the aerial cooler (12).
4. refrigerant circulation circuit according to any one of claim 1 to 3,
It is characterized in that,
Composition has additional coolant circulation circuit, the additional coolant circulation circuit to have pump (13), heat pump heat transmitter
(10) and coolant-air-cooler (14), wherein the heat pump heat transmitter (10) together with associated expansion mechanism (9) with
The battery cooler (11) and the aerial cooler (12) are arranged in refrigerant circulation circuit in parallel.
5. refrigerant circulation circuit according to any one of claim 1 to 4,
It is characterized in that,
Additional condenser (4) can as an alternative or be cumulatively connected in the coolant circulation circuit via multi-way valve (15),
The wherein described additional condenser (4) is arranged along flow of refrigerant direction in the condenser in the refrigerant circulation circuit
(3) downstream.
6. refrigerant circulation circuit according to any one of claim 1 to 5,
It is characterized in that,
The auxiliary compressor (2) is constituted in a manner of being integrated into the main compressor (1) and the main compressor (1) is constituted
For the compressor of two-stage.
7. a kind of method for running refrigerant circulation circuit according to any one of the preceding claims,
It is characterized in that,
When with air conditioner facility pattern running,
Refrigerant is compressed to single-stage in main compressor (1)；
Then make the refrigerant percolation condenser (3) to radiate；
The refrigerant is depressurized to middle pressure in expansion mechanism (5)；
The liquid phase of the refrigerant is evaporated simultaneously simultaneously in aerial cooler (12) and in the battery cooler (11)
And it is jointly sucked by the main compressor (1) from the separator (6) with gas phase.
8. according to the method described in claim 7,
It is characterized in that,
By the refrigerant the aerial cooler (12) and the battery cooler (11) upstream separately by means of
Expansion mechanism (7,8) is depressured.
9. a kind of method for running refrigerant circulation circuit according to any one of the preceding claims,
It is characterized in that,
In the charge operation of battery,
Refrigerant is compressed to two-stage in main compressor (1) and in auxiliary compressor (2)；
Then make the refrigerant percolation condenser (3) to radiate；
The refrigerant is depressurized to middle pressure in expansion mechanism (5)；
The gas phase of the refrigerant is sucked by the auxiliary compressor (2)；And
The liquid phase of the refrigerant, which evaporates in battery cooler (11) and passes through the main compressor (1), to be sucked.
10. the method according to any one of claim 7 to 9,
It is characterized in that,
The heat dissipation of the refrigerant is also connected in series in the attached of downstream other than the condenser (3) in refrigerant circulation circuit
Add in condenser (4) and carries out.
11. a kind of method for running refrigerant circulation circuit according to any one of the preceding claims,
It is characterized in that,
In the operation of heat pump of single-stage,
Refrigerant is compressed to single-stage in the main compressor (1)；
Then make the refrigerant percolation condenser (3) to proceed to the heat dissipation of inner space；
The refrigerant is depressurized to middle pressure in expansion mechanism (5)；
The gas phase of the refrigerant is sucked by the main compressor (1)；And
The liquid phase of the refrigerant, which evaporates in heat pump heat transmitter (10) and passes through the main compressor (1), to be sucked.
12. a kind of method for running refrigerant circulation circuit according to any one of the preceding claims,
It is characterized in that,
In the operation of heat pump of two-stage,
Refrigerant is compressed to two-stage in main compressor (1) and in auxiliary compressor (2)；
Then make the refrigerant percolation condenser (3) to proceed to the heat dissipation of inner space；
The refrigerant is depressurized to middle pressure in expansion mechanism (5)；
The gas phase of the refrigerant is sucked by the auxiliary compressor (2)；And
The liquid phase of the refrigerant cools down in heat pump heat transmitter (10), in aerial cooler (12) and in the battery
It is evaporated simultaneously in device (11) and passes through the main compressor (1) and sucked.
13. method according to claim 11 or 12,
It is characterized in that,
Heat absorption of the refrigerant in the heat pump heat transmitter (10) is additionally from the coolant of the heat pump heat transmitter (10)
Heat pump is carried out in circulation loop heat pump.
14. method according to any one of the preceding claims,
It is characterized in that,
It will be in order to be radiated in the battery cooler (11) and additional heat-transfer area is disconnected in the charge operation of accumulator
It opens.
15. method according to any one of the preceding claims,
It is characterized in that,
It will be in order to be radiated in the coolant-aerial cooler (14) and additional heat-transfer area is disconnected in charge operation
It opens or entire surface can be used due to being not used by by other component.
16. method according to any one of the preceding claims,
It is characterized in that,
It will be in order to be radiated in the condenser (3) and additional heat-transfer area disconnects in charge operation, or it will be constant
Condenser at power the temperature difference of driven nature is embodied as in higher high pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017100591.9 | 2017-01-13 | ||
| DE102017100591.9A DE102017100591B3 (en) | 2017-01-13 | 2017-01-13 | Refrigerant circuit, in particular for motor vehicles with electric or hybrid drive and method for operating the refrigerant circuit |
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| CN108332455A true CN108332455A (en) | 2018-07-27 |
| CN108332455B CN108332455B (en) | 2021-02-02 |
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| CN201810026548.1A Active CN108332455B (en) | 2017-01-13 | 2018-01-11 | Refrigerant circuit and method for operating a refrigerant circuit |
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| Country | Link |
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| KR (1) | KR102020930B1 (en) |
| CN (1) | CN108332455B (en) |
| DE (1) | DE102017100591B3 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318679A (en) * | 2018-08-15 | 2019-02-12 | 吉林大学 | A heat pump type automotive air-conditioning system suitable for high-power fast-charging conditions |
| CN111532098A (en) * | 2019-02-06 | 2020-08-14 | 翰昂汽车零部件有限公司 | Air conditioning and battery cooling apparatus and method of operating the same |
| CN113503653A (en) * | 2021-08-04 | 2021-10-15 | 珠海格力电器股份有限公司 | Multi-compressor refrigeration system and air conditioner |
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| DE102018101514B4 (en) | 2018-01-24 | 2021-07-29 | Hanon Systems | Motor vehicle refrigeration system with several evaporators of different cooling capacities |
| CN109591545B (en) * | 2018-10-31 | 2020-07-10 | 上海爱斯达克汽车空调系统有限公司 | Air-supplementing enthalpy-increasing heat pump system with throttling multi-port thermal expansion valve, vehicle and method |
| DE102020201348A1 (en) * | 2020-02-04 | 2021-08-05 | Volkswagen Aktiengesellschaft | Refrigerant circuit and method for operating a refrigerant circuit |
| DE102020106626B4 (en) | 2020-03-11 | 2023-09-28 | Audi Aktiengesellschaft | Refrigerant circuit for a motor vehicle and method for operating such a refrigerant circuit |
| CN111928526A (en) * | 2020-08-10 | 2020-11-13 | 珠海格力电器股份有限公司 | Heat recovery system |
| CN114484909A (en) * | 2022-02-16 | 2022-05-13 | 成都科斯特制冷技术有限公司 | A two-machine two-stage compression refrigeration unit |
| US20240418415A1 (en) * | 2023-06-19 | 2024-12-19 | Carrier Corporation | Multi-circuit heat pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20180083791A (en) | 2018-07-23 |
| DE102017100591B3 (en) | 2018-05-09 |
| KR102020930B1 (en) | 2019-09-16 |
| CN108332455B (en) | 2021-02-02 |
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