CN108248331A - Heat pump air conditioning system and electric vehicle - Google Patents
Heat pump air conditioning system and electric vehicle Download PDFInfo
- Publication number
- CN108248331A CN108248331A CN201611246469.9A CN201611246469A CN108248331A CN 108248331 A CN108248331 A CN 108248331A CN 201611246469 A CN201611246469 A CN 201611246469A CN 108248331 A CN108248331 A CN 108248331A
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- spool
- air conditioning
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 68
- 239000003507 refrigerant Substances 0.000 claims abstract description 62
- 230000008676 import Effects 0.000 claims description 100
- 239000007788 liquid Substances 0.000 claims description 84
- 238000001816 cooling Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 36
- 238000004891 communication Methods 0.000 abstract description 6
- 239000010725 compressor oil Substances 0.000 abstract description 3
- 230000001151 other effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 37
- 230000006870 function Effects 0.000 description 21
- 238000005057 refrigeration Methods 0.000 description 19
- 230000009471 action Effects 0.000 description 11
- 230000000712 assembly Effects 0.000 description 10
- 238000000429 assembly Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010257 thawing Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 206010008190 Cerebrovascular accident Diseases 0.000 description 2
- 208000006011 Stroke Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000003434 inspiratory effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
This disclosure relates to a kind of heat pump air conditioning system and electric vehicle.Heat pump air conditioning system includes compressor, indoor condenser, indoor evaporator, outdoor heat exchanger and expansion switch valve, the outlet of compressor is connected with the entrance of indoor condenser, the outlet of indoor condenser and the second inlet communication of expansion switch valve, the outlet of expansion switch valve is connected with the entrance of outdoor heat exchanger, it connects with the entrance of compressor via the first through-flow branch to the egress selection of outdoor heat exchanger (605) or is connected via first throttle branch with the entrance of indoor evaporator, the outlet of indoor evaporator is connected with the entrance of compressor, the first inlet communication of the outlet of compressor or the outlet of indoor condenser also with expanding switch valve.Heating efficiency is improved thus, it is possible to reach, meets defrosting-defogging laws and regulations requirement, be easily installed and other effects, simplify pipeline connection, cost is reduced, and reduce the refrigerant charge of entire heat pump air conditioning system, convenient for compressor oil return.
Description
Technical field
This disclosure relates to automotive air-conditioning system, and in particular, to a kind of heat pump air conditioning system further relates to one kind and is provided with this
The electric vehicle of heat pump air conditioning system.
Background technology
Electric vehicle does not have the engine exhaust heat that orthodox car is used for heating, can not provide heating reservoir.Therefore, electronic vapour
The air-conditioning system of vehicle itself must have the function of heating, i.e., using heat pump type air conditioner system and/or electrical heating heat supply.
The utility model patent of Publication No. CN102788397A discloses a kind of electric automobile heat-pump air-conditioning system.The heat
Although pump air conditioner system can use in all kinds of electric vehicles, which uses two outdoor heat exchanger (outdoors
Condenser and an outdoor evaporator), lead to that front-end module windage is larger, and system structure is more complicated, influence heating effect.
In addition, sometimes for control refrigerant reducing pressure by regulating flow or only by not throttling in the heat pump air conditioning system, and show
Some electric expansion valves can only control refrigerant to throttle or do not pass through.To meet this demand of heat pump system, the prior art
Use the structure of electric expansion valve and electromagnetic switch valve parallel connection.This structure needs to use two three-way connections, six roots of sensation pipeline,
Structure is more complicated, is not easy to install.When solenoid valve is closed, during using electric expansion valve, electric expansion valve import is high for medium temperature
The liquid refrigerant of pressure, electronic expansion valve outlet are the liquid refrigerant of low-temp low-pressure, since pipeline is connection, so electromagnetism
The inlet and outlet of valve are also consistent with the refrigerant condition of electric expansion valve inlet and outlet respectively, the refrigerant pressure temperature of solenoid valve inlet and outlet
It spends different, easily the internal structure of solenoid valve is damaged.In addition, since pipeline is relatively more, it is empty that entire heat pump can be improved
The refrigerant charge of adjusting system improves cost.When heat pump air conditioning system works at low temperature, compressor oil return can be relatively more tired
Difficulty, the structure of this complexity can also be unfavorable for the oil return of heat pump air conditioning system.
Invention content
The purpose of the disclosure is to provide a kind of heat pump air conditioning system and electric vehicle, to solve above-mentioned technical problem.
To achieve these goals, according to the disclosure in a first aspect, a kind of heat pump air conditioning system is provided, including compression
Machine, indoor condenser, indoor evaporator, outdoor heat exchanger and expansion switch valve, the expansion switch valve include valve body, the valve body
On be formed with the first import, the second import, outlet and connection between first import, the second import and the outlet
Inner flow passage is equipped with the first spool and the second spool on the inner flow passage, and first spool causes first import
Connection is directly connected or disconnects with the outlet, second spool causes second import and the outlet to pass through throttle orifice
Connection disconnects connection, and the outlet of the compressor is connected with the entrance of the indoor condenser, and the interior condenser goes out
Second inlet communication of mouth and the expansion switch valve, the outlet of the expansion switch valve and the entrance company of the outdoor heat exchanger
It is logical, it is connected via the first through-flow branch with the entrance of the compressor to the egress selection of the outdoor heat exchanger or via the
One throttling branch is connected with the entrance of the indoor evaporator, and the outlet of the indoor evaporator connects with the entrance of the compressor
It is logical, the first inlet communication of the outlet of the compressor or the outlet of the indoor condenser also with the expansion switch valve.
Optionally, the described first through-flow branch road is provided with first switch valve, and the first throttle branch road is provided with the
One expansion valve.
Optionally, the outlet of the indoor evaporator is connected via check valve with the entrance of the compressor.
Optionally, the heat pump air conditioning system is applied to electric vehicle, and the first through-flow branch road is additionally provided with board-like
Heat exchanger, the plate heat exchanger are arranged on simultaneously in the electromotor cooling system of the electric vehicle.
Optionally, the described first through-flow branch road is provided with first switch valve, the refrigerant inlet of the plate heat exchanger
With the outlet of the outdoor heat exchanger, the refrigerant outlet of the plate heat exchanger and the entrance of the first switch valve connect
It is logical.
Optionally, the electromotor cooling system includes motor, the motor connected with the plate heat exchanger to be formed into a loop
Radiator and water pump.
Optionally, the system also includes gas-liquid separator, the outlet of the indoor evaporator and the gas-liquid separators
Entrance connection, the outlet of the outdoor heat exchanger connects via the entrance of the described first through-flow branch and the gas-liquid separator
Logical, the outlet of the gas-liquid separator is connected with the entrance of the compressor.
Optionally, the inner flow passage include respectively with the first flow of first import and the second inlet communication and the
Two runners, the first valve port coordinated with first spool is formed on the first flow, and the throttle orifice is formed in described
To be formed as the second valve port coordinated with second spool in second flow channel, the first flow and the second flow channel cross
In the downstream of second valve port and with the outlet.
Optionally, first spool and the second spool are mutually parallel.
Optionally, the second flow channel is mutually perpendicular to the outlet, and the first flow is formed as and the second
The first through hole that road is mutually parallel, second import by be opened in the second through-hole on the second flow channel side wall with it is described
Second flow channel connects, the first through hole and second through-hole respectively with first import and second inlet communication.
Optionally, the first through hole and the second flow channel pass through third through-hole and fourth hole and the outlet respectively
Connection, the third through-hole and fourth hole are coaxial and open up in opposite directions, and are mutually perpendicular to the outlet.
Optionally, first import and the second import are opened in parallel to each other on the same side of the valve body, described
Outlet is respectively parallel to first import and the second import.
Optionally, the outlet is arranged between first spool and second spool.
Optionally, first spool along the coaxial laying of moving direction and first valve port selectively to block or take off
From first valve port.
Optionally, second spool along the coaxial laying of moving direction and second valve port selectively to block or take off
From second valve port.
Optionally, first spool includes the first valve rod and is connected to the first plug of first valve stem end, this
One plug is used on the end face for being sealed against first valve port block the first flow.
Optionally, second spool includes the second valve rod, and the end of second valve rod is formed as taper header structure, described
Second valve port is formed as and the matched taper pore structure of the taper header structure.
Optionally, the valve body include the valve seat for forming the inner flow passage and the first valve casing on the valve seat and
Second valve casing is equipped with the first electromagnetic drive part for driving first spool, second valve in first valve casing
The second electromagnetic drive part for driving second spool is installed, first spool extends from first valve casing in shell
The inner flow passage in the valve seat, second spool extend to described interior in the valve seat from second valve casing
Portion's runner.
Optionally, the valve seat is formed as polyhedral structure, and it is more that first valve casing and second valve casing are arranged on this
On the same surface of face body structure, first import and second import are arranged on the same surface of the polyhedral structure
On, and first valve casing, first import and the outlet are separately positioned on the different surfaces of the polyhedral structure,
In, the installation direction of first valve casing and second valve casing is mutually parallel, the opening direction of the import and the outlet
It is mutually parallel.
According to the second aspect of the disclosure, a kind of electric vehicle is provided, including what is provided according to the first aspect of the disclosure
The heat pump air conditioning system.
Automobile sky can be realized in the case where not changing refrigerant circulation direction for the heat pump air conditioning system that the disclosure provides
Adjusting system freezes and heating, outdoor heat exchanger defrosting function, and can meet while the needs of refrigeration and heating.In outdoor heat exchanger
During bypass defrosting, remain to meet interior heating demand.Further, since the heat pump air conditioning system of the disclosure is only with a room
External heat exchanger, therefore the windage of front-end module can be reduced, the pure electric vehicle for solving no engine exhaust heat circulatory system
Or hybrid electric vehicle using electric-only mode automobile heat pump air-conditioning system heating efficiency it is low, can not meet defrosting-defogging regulation will
It asks, the problems such as complexity is installed, reaching reduces energy consumption, simplied system structure, the effect that pipeline is facilitated to arrange.In addition, by heat
Installation expansion switch valve in pump air conditioner system, can simplify pipeline connection, reduce cost, and reduce entire heat pump air conditioning system
Refrigerant charge, convenient for compressor oil return；In addition, the heat pump air conditioning system that the disclosure provides has spy simple in structure
Point, therefore be easy to produce in batches.
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool
Body embodiment is used to explain the disclosure, but do not form the limitation to the disclosure together.In the accompanying drawings：
Fig. 1 is the structure diagram of the heat pump air conditioning system provided according to an embodiment of the present disclosure；
Fig. 2 is the structure diagram of the heat pump air conditioning system provided according to the another embodiment of the disclosure；
Fig. 3 is the structure diagram of the heat pump air conditioning system provided according to the another embodiment of the disclosure；
Fig. 4 is the structure diagram of the heat pump air conditioning system provided according to the another embodiment of the disclosure；
Fig. 5 is the three-dimensional knot in one direction of the expansion switch valve provided according to an illustrative embodiments of the disclosure
Structure schematic diagram；
Fig. 6 is the solid along another direction of expansion switch valve provided according to an illustrative embodiments of the disclosure
Structure diagram；
Fig. 7 is the cross-sectional view of expansion switch valve provided according to an illustrative embodiments of the disclosure,
In, the first valve port is in opening state, and the second valve port is in closed state；
Fig. 8 is that another cross-section structure of expansion switch valve provided according to an illustrative embodiments of the disclosure is illustrated
Figure, wherein, the first valve port is in closed state, and the second valve port is in opening state；
Fig. 9 is that the first internal structure of expansion switch valve provided according to an illustrative embodiments of the disclosure is illustrated
Figure, wherein, the first valve port is in opening state；
Figure 10 is that the second internal structure of expansion switch valve provided according to an illustrative embodiments of the disclosure is illustrated
Figure, wherein, the second valve port is in opening state.
Specific embodiment
The specific embodiment of the disclosure is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the case where not making to illustrate on the contrary, the noun of locality such as " upper and lower, left and right " used is typically phase
For the page of attached drawing, " upstream, downstream " is relative to medium, e.g., for the flow direction of refrigerant, is had
Body, it is downstream towards the flow direction of refrigerant, is upstream away from the flow direction of refrigerant, " inside and outside " refers to corresponding portion
Part profile it is interior with it is outer.
In the disclosure, electric vehicle can include pure electric automobile, hybrid vehicle, fuel cell car.
Fig. 1 is the structure diagram according to the heat pump air conditioning system of the first embodiment of the disclosure.As shown in Figure 1,
The system can include：HVAC (heating and ventilation and air-conditioning, Heating Ventilation and Air Conditioning)
Assembly 600 and air door mechanism (not shown), wherein, air door mechanism can be used for leading to indoor evaporator 602 and interior is cold
The air duct of condenser 601.In addition, the system also includes expansion switch valve 5, compressor 604 and outdoor heat exchangers 605.Wherein,
HVAC assemblies 600 can include indoor condenser 601 and indoor evaporator 602.The outlet of compressor 604 and indoor condenser
601 entrance connection, the outlet of indoor condenser 601 are connected with expanding the second import 501b of switch valve 5, expand switch valve 5
Outlet 502 connected with the entrance of outdoor heat exchanger 605, the egress selection of outdoor heat exchanger 605 via first throttle branch
Road connects with the entrance of indoor evaporator 602 or is connected via the first through-flow branch with the entrance of compressor 604, indoor evaporator
602 outlet is connected with the entrance of compressor 604, the first import exported also with expanding switch valve 5 of indoor condenser 601
501a is connected.In other words, the egress selection of outdoor heat exchanger 605 via expansion switch valve 5 throttling runner or expansion
The through-flow runner of switch valve 5 is connected with the entrance of outdoor heat exchanger 605.
In the disclosure, expansion switch valve is that have the function of expansion valve (also referred to as electric expansion valve function) simultaneously and open
The valve of valve function (also referred to as solenoid valve function) is closed, it is the integrated of switch valve and expansion valve that can be regarded as.It is expanding
The inside of switch valve is formed with through-flow runner and throttling runner, when expansion switch valve as switch valve in use, its inside leads to
Runner conducting is flowed, forms through-flow branch at this time；When expansion switch valve as expansion valve in use, its internal throttling runner is led
It is logical, throttling branch is formed at this time.
In the disclosure, or the outlet of outdoor heat exchanger 605 connects via the entrance of the first through-flow branch and compressor 604
Lead to or connected via first throttle branch with the entrance of indoor evaporator 602.Various ways may be used to realize this company
Logical mode.For example, in one embodiment, as shown in Figure 1, the first through-flow branch road is provided with first switch valve 610, first
Throttling branch road is provided with the first expansion valve 609.Specifically, as shown in Fig. 2, the outlet of outdoor heat exchanger 605 is opened via first
It closes valve 610 to be connected with the entrance of compressor 604 to form the first through-flow branch, the outlet of outdoor heat exchanger 605 is swollen via first
Swollen valve 609 connects to form first throttle branch with the entrance of indoor evaporator 602.When system is under high-temperature refrigeration pattern
When, the first expansion valve 609 is connected, and first switch valve 610 is closed, the outlet of outdoor heat exchanger 605 via first throttle branch with
The entrance connection of indoor evaporator 602.When system is under low temperature heating pattern, first switch valve 610 is connected, the first expansion
Valve 609 is closed, and the outlet of outdoor heat exchanger 605 is connected via the first through-flow branch with the entrance of compressor 604.
Fig. 2 shows the structure diagrams of the heat pump air conditioning system of another embodiment according to the disclosure.Such as Fig. 2 institutes
Show, which can also include gas-liquid separator 611 and check valve 615, wherein, the outlet of indoor evaporator 602
It is connected with the entrance of gas-liquid separator 611, the outlet of outdoor heat exchanger 605 is via the first through-flow branch and gas-liquid separator 611
Entrance connection, the outlet of gas-liquid separator 611 is connected with the entrance of compressor 604.In this way, through indoor evaporator 602 or
The refrigerant that first switch valve 610 flows out can first pass around gas-liquid separator 611 and carry out gas-liquid separation, and the gas isolated is again
It flows back into compressor 604, compressor 604 is damaged so as to prevent liquid refrigerant from entering compressor 604, so as to prolong
The service life of long compressor 604, and improve the efficiency of entire heat pump air conditioning system.The outlet of indoor evaporator 602 passes through list
It is connected to valve 615 with the entrance of gas-liquid separator 611.Here, setting check valve 615 is in order to prevent in low temperature heating pattern
Refrigerant is back to indoor evaporator 602 under (described in detail below), influences heating effect.
The first heat pump air conditioning system that the disclosure provides will be described in detail in different Working moulds by taking Fig. 2 as an example below
Cyclic process and principle under formula.It should be understood that it is under other embodiment (for example, embodiment shown in FIG. 1)
Cyclic process and the principle of uniting are similar to Fig. 2, are just no longer repeated one by one herein.
Pattern one：High-temperature refrigeration pattern.System in this mode when, whole system forms high-temperature refrigeration cycle
System.As shown in Fig. 2, first, gas of the compressor 604 through overcompression discharge high temperature and pressure is connected with indoor condenser 601.
At this point, control wind without indoor condenser 601 by air door mechanism, due to calm process, condenser 601 indoors
Interior to carry out heat exchange, which only uses as runner, and it is still high temperature that indoor condenser 601, which exports, at this time
The gas of high pressure.Indoor condenser 601 is exported via expansion the first import 501a of switch valve 5 and going out for the expansion switch valve 5
Mouth 502 connects, and expands switch valve 5 at this time and plays switch valve action, only flowed through as runner, expands the outlet 502 of switch valve 5 at this time
Still it is the gas of high temperature and pressure.The outlet 502 of expansion switch valve 5 is connected with outdoor heat exchanger 605, outdoor heat exchanger 605 and room
Outer air heat-exchange, heat is dispersed into air, liquid of the outlet of outdoor heat exchanger 605 for medium temperature high pressure.At this point, first switch
Valve 610 is closed, and the outlet of outdoor heat exchanger 605 is connected with the first expansion valve 609, and the first expansion valve 609 is played as restricting element
Throttling action, outlet are low temperature and low pressure liquid.First expansion valve, 609 aperture can give certain open according to actual demand
Degree, this aperture can be according to pressure-temperature between the entrance of the outlet of indoor evaporator 602 and gas-liquid separator 611
The pressure and temperature gathered data of degree sensor calculates Refrigerant Superheat at Evaporator Outlet to adjust.First expansion valve 609 goes out
Mouthful it is connected with the entrance of indoor evaporator 602, low temperature and low pressure liquid is evaporated in evaporator 602 indoors so that indoor steaming
Send out gas of the outlet of device 602 for low-temp low-pressure.The outlet of indoor evaporator 602 is connected with the entrance of check valve 615, check valve
615 outlet is connected with the entrance of gas-liquid separator 611, the liquid not being evaporated is detached by gas-liquid separator 611, finally
The gas of low-temp low-pressure is returned in compressor 604, and a cycle is consequently formed.The flow direction of 600 apoplexy of HVAC assemblies only flows at this time
Through indoor evaporator 602, indoor 601 calm process of condenser is only flowed through as refrigerant flow path.
Pattern two：Low temperature heating pattern.System in this mode when, whole system forms low temperature heating cycle
System.As shown in Fig. 2, first, gas of the compressor 604 through overcompression discharge high temperature and pressure is connected with indoor condenser 601,
At this point, indoor condenser 601 has a wind process, the gas of high temperature and pressure is condensed in condenser 601 indoors so that indoor cold
Liquid of the outlet of condenser 601 for medium temperature high pressure.Indoor condenser 601 export via expansion switch valve 5 the second import 501b with
The outlet 502 of the expansion switch valve 5 connects, and expands switch valve 5 at this time and plays expansion valve, throttling is played as restricting element
Effect, liquid of the outlet for low-temp low-pressure.Wherein, the aperture of expansion switch valve 5 can be given certain according to actual demand
Aperture, this aperture can be according to the temperature acquisition datas of the pressure-temperature sensor mounted on the exit of compressor 604 (i.e.
Compressor exhaust temperature) number adjust.The outlet 502 of expansion switch valve 5 is connected with the entrance of outdoor heat exchanger 605, room
External heat exchanger 605 absorbs the heat of outdoor air, gas of the outlet of outdoor heat exchanger 605 for low-temp low-pressure.At this point, first switch
Valve 610 is opened, and the first expansion valve 609 is closed, and refrigerant is directly entered without indoor evaporator 602 in gas-liquid separator 611,
The liquid not being evaporated is detached by gas-liquid separator 611, and the gas of last low-temp low-pressure is returned in compressor 604, thus shape
Into a cycle.The wind in HVAC assemblies 600 simultaneously flows through indoor condenser 601 and indoor evaporator 602 at this time.
Pattern three：Refrigeration and heating pattern simultaneously.System in this mode when, whole system formed a refrigeration and heating
Open cycle system simultaneously.As shown in Fig. 2, first, gas of the compressor 604 through overcompression discharge high temperature and pressure, with indoor condensation
Device 601 is connected, and the gas of high temperature and pressure is condensed in condenser 601 indoors so that the indoor outlet of condenser 601 is medium temperature
The liquid of high pressure.Indoor condenser 601 is exported via expansion the second import 501b of switch valve 5 and going out for the expansion switch valve 5
Mouth 502 connects, and expands switch valve 5 at this time and plays expansion valve, plays throttling action as restricting element, outlet 502 is
Low temperature and low pressure liquid.Wherein, the aperture of expansion switch valve 5 can give certain aperture according to actual demand, this aperture can be with
According to the temperature acquisition data (i.e. compressor exhaust temperature) of the pressure-temperature sensor mounted on the exit of compressor 604
Number adjust.The outlet 502 of expansion switch valve 5 is connected with outdoor heat exchanger 605, and 605 entrance of outdoor heat exchanger is low temperature
The liquid of low pressure makes its gas-liquid mixture of the outlet for low-temp low-pressure by incomplete evaporation.At this point, first switch valve 610 closes
It closes, the first expansion valve 609 is opened, and the first expansion valve 609 throttles once again as restricting element, and the outlet of the first expansion valve 609 is
The gas-liquid mixture of low-temp low-pressure.The outlet of first expansion valve 609 is connected with indoor evaporator 602, the gas-liquid mixed of low-temp low-pressure
Object is evaporated in evaporator 602 indoors so that gas of the outlet of indoor evaporator 602 for low-temp low-pressure.Indoor evaporator
602 are connected with gas-liquid separator 611, the liquid not being evaporated are detached by gas-liquid separator 611, the gas of last low-temp low-pressure
Body is returned in compressor 604, and a cycle is consequently formed.The wind in HVAC assemblies 600 simultaneously flows through indoor condenser 601 at this time
With indoor evaporator 602.
Pattern four：Outdoor heat exchanger defrosting mode.As shown in Fig. 2, first, compressor 604 is high through overcompression discharge high temperature
The gas of pressure is connected with indoor condenser 601.At this point, indoor condenser 601 is only flowed through as runner, indoor condenser 601 goes out
Mouth is still the gas of high temperature and pressure.Indoor condenser 601 is exported to be expanded via the first import 501a of expansion switch valve 5 with this
The outlet 502 for closing valve 5 connects, and expands switch valve 5 at this time and plays switch valve action, only flowed through as runner, expands switch valve 5 at this time
Outlet 502 still be high temperature and pressure gas.The outlet 502 of expansion switch valve 5 is connected with outdoor heat exchanger 605, outdoor heat exchange
Device 605 exchanges heat with outdoor air, and heat is dispersed into air, liquid of the outlet of outdoor heat exchanger 605 for medium temperature high pressure.This
When, first switch valve 610 is closed, and the first expansion valve 609 is opened, and the first expansion valve 609 plays throttling action as restricting element,
It is exported as low temperature and low pressure liquid.First expansion valve, 609 aperture can give certain aperture according to actual demand, this aperture can
The pressure of pressure-temperature sensor between the entrance according to the outlet and gas-liquid separator 611 for being mounted on indoor evaporator 602
Power and temperature acquisition data calculate Refrigerant Superheat at Evaporator Outlet to adjust.First expansion valve 609 exports and indoor evaporation
Device 602 is connected, gas of the outlet of indoor evaporator 602 for low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611,
The liquid not being evaporated is detached by gas-liquid separator 611, the gas of last low-temp low-pressure is returned in compressor 604, thus
Form a cycle.HVAC assemblies 600 can not blow at this time.
Under low temperature heating pattern and simultaneously refrigeration and heating pattern, in order to improve heating ability, it is preferable that such as Fig. 3 institutes
Show, plate heat exchanger 612 is provided in entire heat pump air conditioning system, which is also disposed in electronic simultaneously
In the electromotor cooling system of automobile.In this way, the waste heat of electromotor cooling system can be utilized to give air-conditioning system refrigerant heat, so as to
The suction temperature and inspiratory capacity of compressor 604 can be improved.Plate heat exchanger 612 can arbitrarily be arranged on first switch valve 610
Upstream or downstream.In the embodiment illustrated in fig. 3, plate heat exchanger 612 is arranged on the upstream of first switch valve 610, that is, plate
The refrigerant inlet 612a of formula heat exchanger 612 and the outlet of outdoor heat exchanger 605, the refrigerant of plate heat exchanger 612 go out
Mouth 612b is connected with the entrance of first switch valve 610.(not shown) in another embodiment, plate heat exchanger 612 are set
In the downstream of first switch valve 610, that is, the refrigerant inlet 612a of plate heat exchanger 612 connects with the outlet of first switch valve 610
Logical, the refrigerant outlet 612b of plate heat exchanger 612 is connected with the entrance of gas-liquid separator 611.
At the same time, plate heat exchanger 612 is arranged in electromotor cooling system simultaneously.As shown in figure 3, electromotor cooling system
It can include being connected with plate heat exchanger 612 with the motor of forming circuit, motor radiator 613 and water pump 614.In this way, refrigeration
Agent can carry out heat exchange by the coolant in plate heat exchanger 612 and electromotor cooling system.
In the heat pump air conditioning system provided in the disclosure, the various refrigerants such as R134a, R410a, R32, R290 can be used,
It is preferential to select high temperature refrigerant.
Fig. 4 is the structure diagram of the heat pump air conditioning system provided according to second of embodiment of the disclosure.Such as Fig. 4 institutes
Show, which can include expansion switch valve 5 described above, HVAC assemblies 600 and air door mechanism.Such as Fig. 2
Shown in Fig. 4, heat pump air conditioning system and the heat pump air conditioner system of the first embodiment offer which provides
The structure of system is similar, in the difference that this introduces two kinds of embodiments.Specifically, as shown in figure 4, being carried in the disclosure
In second of the embodiment supplied, compressor 604 has first outlet 604a and second outlet 604b, wherein, first outlet
604a is connected successively via the throttling runner of indoor condenser 601 and expansion switch valve 5 with outdoor heat exchanger 605, second outlet
604b is connected via the through-flow runner of the expansion switch valve 5 with outdoor heat exchanger 605, that is, the outlet of compressor 604 also with expansion
The first import 501a connections of switch valve.And as shown in Fig. 2, the disclosure provide the first embodiment in, compressor 604
It is connected with unique one outlet, and with indoor condenser 601, the outlet of indoor condenser 601 is then selectively via swollen
The throttling runner of swollen switch valve 5 or through-flow runner are connected with the entrance of outdoor heat exchanger 605.In other words, in second of embodiment party
In formula, the refrigerant flowed out from compressor 604 not all by indoor condenser 601, but selectively via its
The indoor condenser 601 of one outlet 604a flow directions or the first import that expansion switch valve 5 is flowed to via its second outlet 604b
501a.For example, when heat pump air conditioning system is under high-temperature refrigeration pattern or outdoor heat exchanger defrosting mode, refrigerant can be around
It crosses indoor condenser 601 and flows directly into outdoor heat exchanger 605, can reduce by this method needed for heat pump air conditioning system cycle
Refrigerant total amount.And in the first embodiment, it must all flow to interior from the refrigerant of the outlet outflow of compressor 604
Condenser 601 subsequently selectively flows to outdoor heat exchanger 605 via the throttling runner or through-flow runner of expansion switch valve 5.
In the disclosure, or the outlet of outdoor heat exchanger 605 connects via the entrance of the first through-flow branch and compressor 604
Lead to or connected via first throttle branch with the entrance of indoor evaporator 602.Various ways may be used to realize this company
Logical mode.For example, in one embodiment, as shown in figure 4, the first through-flow branch road is provided with first switch valve 610, first
Throttling branch road is provided with the first expansion valve 609.Specifically, as shown in figure 4, the outlet of outdoor heat exchanger 605 is opened via first
It closes valve 610 to be connected with the entrance of compressor 604 to form the first through-flow branch, the outlet of outdoor heat exchanger 605 is swollen via first
Swollen valve 609 connects to form first throttle branch with the entrance of indoor evaporator 602.When system is under high-temperature refrigeration pattern
When, the first expansion valve 609 is connected, and first switch valve 610 is closed, the outlet of outdoor heat exchanger 605 via first throttle branch with
The entrance connection of indoor evaporator 602.When system is under low temperature heating pattern, first switch valve 610 is connected, the first expansion
Valve 609 is closed, and the outlet of outdoor heat exchanger 605 is connected via the first through-flow branch with the entrance of compressor 604.
Further, as shown in figure 4, the heat pump air conditioning system can also include gas-liquid separator 611 and check valve 615,
Wherein, the outlet of indoor evaporator 602 is connected with the entrance of gas-liquid separator 611, and the outlet of outdoor heat exchanger 605 is via first
Through-flow branch is connected with the entrance of gas-liquid separator 611, and the outlet of gas-liquid separator 611 is connected with the entrance of compressor 604.This
Sample, the refrigerant flowed out through indoor evaporator 602 or first switch valve 610 can first pass around gas-liquid separator 611 and carry out
Gas-liquid separation, the gas isolated are flowed back into again in compressor 604, so as to preventing liquid refrigerant from entering compressor 604 and
Compressor 604 is damaged, so as to extend the service life of compressor 604, and improves the efficiency of entire heat pump air conditioning system.Room
The outlet of interior evaporator 602 is connected by check valve 615 with the entrance of gas-liquid separator 611.Here, setting check valve 615 is
Refrigerant is back to indoor evaporator 602 under low temperature heating pattern (described in detail below) in order to prevent, influences heating effect
Fruit.
Pattern one：High-temperature refrigeration pattern.System in this mode when, whole system forms high-temperature refrigeration cycle
System.As shown in figure 4, first, gas of the compressor 604 through overcompression discharge high temperature and pressure, the second outlet of compressor 604
604b is connected via the first import 501a of expansion switch valve 5 with the outlet 502 of the expansion switch valve 5, expands switch valve 5 at this time
Switch valve action is played, is only flowed through as runner, the outlet 502 for expanding switch valve 5 at this time is still the gas of high temperature and pressure.It expands
The outlet 502 for closing valve 5 is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 exchanges heat with outdoor air, and heat is dispersed into sky
In gas, liquid of the outlet of outdoor heat exchanger 605 for medium temperature high pressure.At this point, first switch valve 610 is closed, outdoor heat exchanger 605 goes out
Mouth is connected with the first expansion valve 609, and the first expansion valve 609 plays throttling action as restricting element, and outlet is low-temp low-pressure
Liquid.First expansion valve, 609 aperture can give certain aperture according to actual demand, this aperture can be according to installation indoors
The pressure and temperature gathered data of pressure-temperature sensor between the outlet of evaporator 602 and the entrance of gas-liquid separator 611
Refrigerant Superheat at Evaporator Outlet is calculated to adjust.The outlet of first expansion valve 609 is connected with the entrance of indoor evaporator 602,
Low temperature and low pressure liquid is evaporated in evaporator 602 indoors so that gas of the outlet of indoor evaporator 602 for low-temp low-pressure.
The outlet of indoor evaporator 602 is connected with the entrance of check valve 615, the outlet of check valve 615 and the entrance of gas-liquid separator 611
It is connected, the liquid not being evaporated is detached by gas-liquid separator 611, the gas of last low-temp low-pressure is returned in compressor 604,
A cycle is consequently formed.The flow direction of 600 apoplexy of HVAC assemblies flows only through indoor evaporator 602, indoor 601 nothing of condenser at this time
Wind passes through, and is only flowed through as refrigerant flow path.
Pattern two：Low temperature heating pattern.System in this mode when, whole system forms low temperature heating cycle
System.As shown in figure 4, first, gas of the compressor 604 through overcompression discharge high temperature and pressure, the first outlet of compressor 604
604a is connected with the entrance of indoor condenser 601, at this point, indoor condenser 601 has wind process, the gas of high temperature and pressure is indoors
It is condensed in condenser 601 so that liquid of the indoor outlet of condenser 601 for medium temperature high pressure.The indoor outlet of condenser 601 warp
It is connected by the second import 501b of expansion switch valve 5 with the outlet 502 of the expansion switch valve 5, expands switch valve 5 at this time and play expansion
The effect of valve plays throttling action, liquid of the outlet for low-temp low-pressure as restricting element.Wherein, opening for switch valve 5 is expanded
Degree can give certain aperture according to actual demand, this aperture can according to the pressure mounted on the exit of compressor 604-
The number of the temperature acquisition data (i.e. compressor exhaust temperature) of temperature sensor is adjusted.Expand switch valve 5 outlet 502 with
The entrance of outdoor heat exchanger 605 is connected, and outdoor heat exchanger 605 absorbs the heat of outdoor air, and the outlet of outdoor heat exchanger 605 is low
The gas of warm low pressure.At this point, first switch valve 610 is opened, the first expansion valve 609 is closed, and refrigerant is without indoor evaporator
602 are directly entered in gas-liquid separator 611, and the liquid not being evaporated is detached by gas-liquid separator 611, last low-temp low-pressure
Gas is returned in compressor 604, and a cycle is consequently formed.The wind in HVAC assemblies 600 simultaneously flows through indoor condenser at this time
601 and indoor evaporator 602.
Pattern three：Refrigeration and heating pattern simultaneously.System in this mode when, whole system formed a refrigeration and heating
Open cycle system simultaneously.As shown in figure 4, gas of the compressor 604 through overcompression discharge high temperature and pressure, the first of compressor 604
Outlet 604a is connected with the entrance of indoor condenser 601, at this point, indoor condenser 601 has wind process, the gas of high temperature and pressure exists
It is condensed in indoor condenser 601 so that liquid of the indoor outlet of condenser 601 for medium temperature high pressure.Indoor condenser 601 goes out
Mouth is connected via the second import 501b of expansion switch valve 5 with the outlet 502 of the expansion switch valve 5, is expanded switch valve 5 at this time and is risen
The effect of expansion valve plays throttling action, liquid of the outlet for low-temp low-pressure as restricting element.Wherein, switch valve 5 is expanded
Aperture certain aperture can be given according to actual demand, this aperture can be according to mounted on the exit of compressor 604
The number of the temperature acquisition data (i.e. compressor exhaust temperature) of pressure-temperature sensor is adjusted.Expand the outlet of switch valve 5
502 are connected with outdoor heat exchanger 605, and 605 entrance of outdoor heat exchanger is the liquid of low-temp low-pressure, goes out it by incomplete evaporation
Mouth is the gas-liquid mixture of low-temp low-pressure.At this point, first switch valve 610 is closed, the first expansion valve 609 is opened, the first expansion valve
609 throttle once again as restricting element, gas-liquid mixture of the first expansion valve 609 outlet for low-temp low-pressure.First expansion valve
609 outlets are connected with indoor evaporator 602, and the gas-liquid mixture of low-temp low-pressure is evaporated in evaporator 602 indoors so that
Gas of the outlet of indoor evaporator 602 for low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, not being evaporated
Liquid detached by gas-liquid separator 611, the gas of last low-temp low-pressure is returned in compressor 604, is consequently formed one and is followed
Ring.The wind in HVAC assemblies 600 simultaneously flows through indoor condenser 601 and indoor evaporator 602 at this time.
Pattern four：Outdoor heat exchanger defrosting mode.As shown in figure 4, first, compressor 604 is high through overcompression discharge high temperature
The gas of pressure, the second outlet 604b of compressor 604 is via the first import 501a and the expansion switch valve 5 for expanding switch valve 5
Outlet 502 connect, expand switch valve 5 at this time and play switch valve action, only flowed through as runner, expand switch valve 5 at this time and go out
Mouth 502 is still the gas of high temperature and pressure.The outlet 502 of expansion switch valve 5 is connected with outdoor heat exchanger 605, outdoor heat exchanger 605
It exchanges heat with outdoor air, heat is dispersed into air, liquid of the outlet of outdoor heat exchanger 605 for medium temperature high pressure.At this point, first
Switch valve 610 is closed, and the first expansion valve 609 is opened, and the first expansion valve 609 plays throttling action as restricting element, is exported
For low temperature and low pressure liquid.First expansion valve, 609 aperture can give certain aperture according to actual demand, this aperture can basis
The pressure and temperature of pressure-temperature sensor between the entrance of the outlet of indoor evaporator 602 and gas-liquid separator 611
Degree gathered data calculates Refrigerant Superheat at Evaporator Outlet to adjust.First expansion valve 609 exports and 602 phase of indoor evaporator
Even, gas of the outlet of indoor evaporator 602 for low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, not steaming
The liquid distributed is detached by gas-liquid separator 611, and the gas of last low-temp low-pressure is returned in compressor 604, is consequently formed one
A cycle.HVAC assemblies 600 can not blow at this time.
Under low temperature heating pattern and simultaneously refrigeration and heating pattern, in order to improve heating ability, it is preferable that entire
Plate heat exchanger is provided in heat pump air conditioning system, which is also disposed in the motor cooling system of electric vehicle simultaneously
In system.In this way, the waste heat of electromotor cooling system can be utilized to give air-conditioning system refrigerant heat, so as to improve compressor 604
Suction temperature and inspiratory capacity.Plate heat exchanger can arbitrarily be arranged on the upstream or downstream of first switch valve 610.Specifically,
When plate heat exchanger is arranged on the upstream of first switch valve 610, that is, the refrigerant inlet and outdoor heat exchanger of plate heat exchanger
605 outlet, the refrigerant outlet of plate heat exchanger are connected with the entrance of first switch valve 610.When plate heat exchanger is set
It puts in the downstream of first switch valve 610, that is, the refrigerant inlet of plate heat exchanger and the outlet of first switch valve 610, plate
The refrigerant outlet of formula heat exchanger is connected with the entrance of gas-liquid separator 611.
At the same time, plate heat exchanger is arranged in electromotor cooling system simultaneously.Electromotor cooling system can include and plate
The motor, motor radiator and water pump that formula heat exchanger is connected to be formed into a loop.In this way, refrigerant can by plate heat exchanger with
Coolant in electromotor cooling system carries out heat exchange.
In conclusion the heat pump air conditioning system that the disclosure provides, in the case where not changing refrigerant circulation direction
It realizes automotive air-conditioning system refrigeration and heating, outdoor heat exchanger defrosting function, and can meet while the needs of refrigeration and heating.
During outdoor heat exchanger bypass defrosting, remain to meet interior heating demand.Further, since the heat pump air conditioning system of the disclosure is only
Using an outdoor heat exchanger, therefore the windage of front-end module can be reduced, solve no engine exhaust heat circulatory system
Pure electric vehicle or hybrid electric vehicle using electric-only mode automobile heat pump air-conditioning system heating efficiency it is low, defrosting can not be met
The problems such as demisting laws and regulations requirement, complicated installation, reaching reduces energy consumption, simplied system structure, the effect that pipeline is facilitated to arrange.This public affairs
Opening the heat pump air conditioning system of offer has the characteristics that simple in structure, therefore is easy to produce in batches.
As described above, in the disclosure, expansion switch valve 5 is the valve for having the function of simultaneously expansion valve and switch valve function
Door, it is the integrated of switch valve and expansion valve that can be regarded as.A kind of example for expanding switch valve 5 is will be provided below to implement
Mode.
As shown in Fig. 5 to Figure 10, the disclosure provides a kind of expansion switch valve, including valve body 500, wherein, on the valve body 500
The first import 501a, the second import 501b, outlet 502 and connection are formed in first import 501a, the second import 501b
The inner flow passage between outlet 502, the first spool 503 and the second spool 504, the first spool 503 are installed on inner flow passage
So that the first import 501a directly connects or disconnect connection with outlet 502, the second spool 504 is so that the second import 501b and outlet
502 are connected or are disconnected connection by throttle orifice 505.
Wherein, " the directly connection " that the first spool 503 is realized refers to from the cold of the first import 501a entrance of valve body 500
But agent can cross the first spool 503 and the outlet 502 of valve body 500 is insusceptibly flowed directly to by inner flow passage, and first
" the disconnecting connection " that spool 503 is realized refers to that the cooling agent from the first import 501a entrance of valve body 500 can not cross first
Spool 503 and the outlet 502 that valve body 500 cannot be flowed to by inner flow passage.What the second spool 504 was realized " passes through throttle orifice
Connection " refer to the cooling agent from the second import 501b of valve body 500 entrance can cross the second spool 504 and by throttle orifice
The outlet 502 of valve body 500 is flowed to after throttling, and " disconnect connection " that the second spool 504 is realized refer to from valve body 500 second
The cooling agent that import 501b enters can not cross the second spool 504 and the outlet of valve body 500 cannot be flowed to by throttle orifice 505
502。
In other words, which at least has the first operating position, the second operating position and third operating position,
During the first operating position, for the first spool 503 so that the first import 501a and outlet 502 directly connect, the second spool 504 causes the
Two import 501b are disconnected with outlet 502 and being connected；At the second operating position, the first spool 503 causes the first import 501a and goes out
Mouth 502 disconnects connection, and the second spool 504 is so that the second import 501b is connected with outlet 502 by throttle orifice 505；In third work
When making position, the first spool 503 is so that the first import 501a is connected with 502 disconnection of outlet, and the second spool 504 is so that the second import
501b is disconnected with outlet 502 and being connected.
In this way, by the control to the first spool 503 and the second spool 504, the expansion switch valve of the disclosure can cause
The cooling agent entered from the first import 501a and the second import 501b at least realizes three kinds of states in total.That is, 1) cut-off state；2)
Cross the direct connected state of the first spool 503；And 3) cross the throttling mode of communicating of the second spool 504.
Wherein, after the liquid refrigerant of high temperature and pressure throttles using throttle orifice 505, the mist of low-temp low-pressure can be become
Hydraulic pressure refrigerant, can be refrigerant evaporation create conditions, i.e., the cross-sectional area of throttle orifice 505 be less than the first import
501a, the second import 501b and the cross-sectional area of outlet 502, and can pass through and the second spool is controlled to adjust throttle orifice 505
Aperture size flows through the flow of throttle orifice 505 with control, prevent because the refrigeration of the very few generation of refrigerant is insufficient and prevent because
Refrigerant is excessive and compressor is caused to generate liquid hit phenomenon.That is, the cooperation of the second spool 504 and valve body 500 can to expand
Switch valve has the function of expansion valve.
In this way, by the inside of the same valve body 500 with the first import 501a, the second import 501b and outlet 502
First spool 503 and the second spool 504 are installed, to realize the control of the break-make of inner flow passage or throttling control function, knot on runner
Structure is simple, is readily produced and installs, and when the expansion switch valve that the disclosure provides is applied to heat pump system, it is possible to reduce entire
The refrigerant charge of heat pump system reduces cost, simplifies pipeline connection, the more conducively oil return of heat pump system.
As a kind of illustrative inner mounting structure of valve body 500, as shown in Fig. 5 to Figure 10, valve body 500 includes being formed
The valve seat 510 of inner flow passage and the first valve casing 511 and the second valve casing 512 on the valve seat 510, in the first valve casing 511
The first electromagnetic drive part 521 for driving the first spool 503 is installed, is equipped with to drive second in the second valve casing 512
Second electromagnetic drive part 522 of spool 504, the first spool 503 extend to the inner flow passage in valve seat 510 from the first valve casing 511,
Second spool 504 extends to the inner flow passage in valve seat 510 from the second valve casing 512.
Wherein, by the first electromagnetic drive part 521, e.g., electromagnetic coil, the control of power on/off can easily control
First spool 503 controls import 501 directly to connect or disconnect connection with outlet 502 in the position of inner flow passage；By right
Second electromagnetic drive part 522, e.g., electromagnetic coil, the control of power on/off can easily control the second spool 504 in inside stream
The position in road, so as to control whether import 501 and outlet 502 connect with throttle orifice 505.In other words, it is installed in parallel in valve body 500
There are electric expansion valve and solenoid valve, it is thus possible to realize the break-make of expansion switch valve and/or the automation control of throttling, and simplify
Pipeline moves towards.
Spatial position for all directions for making full use of expansion switch valve, avoids expansion switch valve from being connected with different pipelines
Interference is generated, valve seat 510 is formed as polyhedral structure, and the first valve casing 511 and the second valve casing 512 are arranged on the polyhedral structure
On same surface, the first import 501a and the second import 501b are arranged on the same surface of the polyhedral structure, and the first valve
Shell 511, the first import 501a and outlet 502 are separately positioned on the different surfaces of the polyhedral structure, wherein, the first valve casing
511 and second the installation direction of valve casing 512 be mutually parallel, the opening direction of the first import 501a and outlet 502 is mutually parallel.This
Import, export pipeline can be connected on the different surfaces of polyhedral structure by sample, can avoid pipeline arrangement it is in disorder, tangle
The problem of.
As a kind of typical internal structure of electromagnetic expanding valve, as shown in Figure 7 to 10, inner flow passage include respectively with
The first flow 506 and second flow channel 507 of first import 501a and the second import 501b connections, are formed on first flow 506
With the first valve port 516 of the first spool 503 cooperation, throttle orifice 505 is formed in second flow channel 507 to be formed as and the second spool
Second valve ports 517 of 504 cooperations, first flow 506 and second flow channel 507 be intersected in the downstream of the second valve port 517 and with outlet
502 connections.
That is, it realizes the closing to the first valve port 516 by converting the first spool 503 in the position of inner flow passage or beats
It opens, and then controls blocking or being connected for the first flow 506 for connecting the first import 501a and outlet 502, on realizing
The connection of the solenoid valve of text description or the function of disconnecting connection.Similarly, by converting the second spool 504 in the position of inner flow passage
It puts to realize closing or opening to the second valve port 517, and then control the second flow channel of the second import 501b of connection and outlet 522
507 blocking or being connected, so as to realizing the throttling function of electric expansion valve.
First flow 506 can connect the first import 501a and outlet 502, second flow channel with any appropriate arrangement
507 can connect the second import 501b and outlet 502 with any appropriate arrangement, and the entirety to reduce valve body occupies empty
Between, as shown in Figure 7 and Figure 8, second flow channel 507 is mutually perpendicular to outlet 502, and first flow 506 is formed as and second flow channel 507
The first through hole 526 being mutually parallel, the second import 501b by the second through-hole 527 for being opened on 507 side wall of second flow channel with
Second flow channel 507 connects, and 526 and second through-hole 527 of first through hole connects respectively with the first import 501a and the second import 501b.
Farthest to shorten the total length of inner flow passage, as shown in Figure 7 and Figure 8, first through hole 526 and second flow channel
507 are connected respectively by third through-hole 508 and fourth hole 509 with outlet 502, and third through-hole 508 and fourth hole 509 are coaxial
And it opens up in opposite directions, and be mutually perpendicular to outlet 502.In this manner it is possible to ensure the total length of the inner flow passage in valve body 500 most
It is short, so as to ensure that refrigerant can quickly flow therethrough the expansion switch valve.
It is connected for convenience of the pipe fitting respectively from different pipelines of the first import, the second inlet and outlet of valve body 500, such as schemes
Shown in 5 to Figure 10, the first import 501a and the second import 501b are opened in parallel to each other on the same side of valve body 500, outlet
502 are respectively parallel to the first import 501a and the second import 501b.In this way, the pipe positioned at the pipeline of the upstream and downstream of valve body 500 connects
Head can be respectively installed to the opposite sides of the valve body 500, and prevent the situation that different pipeline arrangements are in disorder, tangle.
Further, the total length for farthest shortening inner flow passage, as shown in Figure 7 and Figure 8,502 setting of outlet
Between the first spool 503 and the second spool 504.
It should be noted that outlet 502 herein is arranged between the first spool 503 and the second spool 504, there is shown mouth
502 projection in the plane being made of the first spool 503 and the second spool 504, positioned at the first spool 503 and the second spool
Between 504.
First spool 503 and the second spool 504 can be set with any appropriate angle, in a kind of illustrative embodiment party
In formula, for convenience of arranging, as shown in Figure 7 and Figure 8, the first spool 503 and the second spool 504 are mutually parallel.
As shown in Figure 7 and Figure 8, for ease of realizing the closing of the first valve port 516 and opening, the first spool 503 is along the side of movement
To with the coaxial laying of the first valve port 516 selectively to block or be detached from the first valve port 516.
For ease of realizing the closing of the second valve port 517 and opening, as shown in Figure 7 and Figure 8, the second spool 504 is along the side of movement
To with the coaxial laying of the second valve port 517 selectively to block or be detached from the second valve port 517.
Further, as shown in Figure 7 and Figure 8, the reliability blocked to ensure the first spool 503 to first flow 506, the
One spool 503 can include the first valve rod 513 and the first plug 523 for being connected to 513 end of the first valve rod, first plug
523 are used on the end face for being sealed against the first valve port 516 block first flow 506.
For ease of adjusting the aperture size of the throttle orifice 505 of expansion switch valve, as shown in Figure 7 and Figure 8, the second spool 504
Including the second valve rod 514, the end of second valve rod 514 is formed as taper header structure, and the second valve port 517 is formed as and the taper
The matched taper pore structure of header structure.
Wherein, expanding 505 aperture of throttle orifice of switch valve can move up and down to adjust by the second spool 504, and
Moving up and down for second spool 504 can be adjusted by the second electromagnetic drive part 522.If expand the throttle orifice 505 of switch valve
Aperture be zero, as shown in figure 8, the second spool 504 is in extreme lower position, the second spool 504 blocks the second valve port 517, refrigeration
Agent cannot pass through throttle orifice 505, i.e. the second valve port 517 completely；If expanding switch valve throttle orifice 505 has aperture, such as Fig. 9 institutes
Show that between the taper header structure of the end of the second spool 504 and throttle orifice 505 there is gap, flow to out again after refrigerant throttling
Mouth 502.It, can be by controlling the second electromagnetic drive part 522 so that second when if desired increasing the throttle opening of expansion switch valve
Spool 504 moves up, so that taper header structure is far from throttle orifice 505, so as to fulfill becoming larger for 505 aperture of throttle orifice；Phase
Instead, it when the aperture for needing the throttle orifice 505 for reducing expansion switch valve, can drive mobile under 504 phase of the second spool.
In use, when only needing the solenoid valve function using expansion switch valve, i.e., when expansion switch valve is positioned at above-mentioned
During the first operating position, as shown in figures 7 and 9, the first electromagnetic drive part 521 powers off, the first plug 523 of the first spool 503
The first valve port 516 is detached from, the first valve port 516 is in opening state；Second electromagnetic drive part 522 is powered, and the second spool 504 is in
Extreme lower position, the second spool 504 block throttle orifice 505, and refrigerant can not be flowed to from the second import 501b by second flow channel 507
Outlet 502, can only pass sequentially through the first valve port 516, first through hole 526 and third through-hole 508 from the first import 501a and flow into
In outlet 502.
It should be noted that the dotted line with the arrow in Fig. 7 and Fig. 9 represents stream of the refrigerant when using solenoid valve function
Access line and trend.
When only needing the electric expansion valve function using expansion switch valve, i.e., when expansion switch valve is located at above-mentioned second
During operating position, as shown in figs, the first electromagnetic drive part 521 is powered, and the first plug 523 of the first spool 503 blocks
First valve port 516, the first valve port 516 are closed；Second electromagnetic drive part 522 powers off, and the second spool 504 is in highest
Position, the second spool 504 are detached from throttle orifice 505, and refrigerant can not be flowed to by first flow 506 from the first import 501a and be exported
502, the second through-hole 527, throttle orifice 505 and fourth hole 509 can only be passed sequentially through from the second import 501b and flow into outlet 502
In, and the second spool 504 is can move up and down to adjust the size of the aperture of throttle orifice 505.
It should be noted that the dotted line with the arrow in Fig. 8 and Figure 10, which represents refrigerant, is using electric expansion valve function
When flow route and trend.
When not needing to simultaneously using the expansion solenoid valve function of switch valve and electric expansion valve function, i.e., when expansion switchs
When valve is located at above-mentioned third operating position, the first electromagnetic drive part 521 is powered, and the first plug 523 of the first spool 503 blocks
First valve port 516, the first valve port 516 are closed；Second electromagnetic drive part 522 is powered, and the second spool 504 is in minimum
Position, the second spool 504 block throttle orifice 505, and refrigerant all can not from the first import 501a or the second import 501b
Flow direction outlet 502, i.e. inner flow passage is in cut-off state.
It should be understood that one of which example of the above embodiment as just expansion switch valve, and and do not have to
In the limitation disclosure, other have the function of that the expansion switch valve of expansion valve and switch valve function is equally applicable to the disclosure simultaneously.
The disclosure also provides a kind of electric vehicle, including the above-mentioned heat pump air conditioning system provided according to the disclosure.Wherein, should
Electric vehicle can include pure electric automobile, hybrid vehicle, fuel cell car.
The preferred embodiment of the disclosure is described in detail above in association with attached drawing, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection domain of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the disclosure to it is various can
The combination of energy no longer separately illustrates.
In addition, arbitrary combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought should equally be considered as disclosure disclosure of that.
Claims (19)
1. a kind of heat pump air conditioning system, which is characterized in that including compressor (604), indoor condenser (601), indoor evaporator
(602), outdoor heat exchanger (605) and expansion switch valve (5),
The expansion switch valve (5) includes valve body (500), and the first import (501a), the second import are formed on the valve body (500)
(501b), outlet (502) and connection first import (501a), the second import (501b) and it is described export (502) it
Between inner flow passage, the first spool (503) and the second spool (504), first spool are installed on the inner flow passage
(503) so that first import (501a) directly connects or disconnect connection, second spool with the outlet (502)
(504) so that second import (501b) connects or disconnect connection with the outlet (502) by throttle orifice (505),
The outlet of the compressor (604) is connected with the entrance of the indoor condenser (601), the interior condenser (601)
Outlet with it is described expansion switch valve (5) the second import (501b) connect, it is described expansion switch valve (5) outlet (502) and
The outdoor heat exchanger (605) entrance connection, the egress selection of the outdoor heat exchanger (605) via the first through-flow branch
Road connects with the entrance of the compressor (604) or connects via first throttle branch and the entrance of the indoor evaporator (602)
Logical, the outlet of the indoor evaporator (602) is connected with the entrance of the compressor (604), the outlet of the compressor (604)
Or first import (501a) of the outlet of the indoor condenser (601) also with the expansion switch valve (5) connects.
2. heat pump air conditioning system according to claim 1, which is characterized in that the first through-flow branch road is provided with first
Switch valve (610), the second throttling branch road are provided with the first expansion valve (609).
3. heat pump air conditioning system according to claim 1, which is characterized in that the outlet warp of the indoor evaporator (602)
It is connected by check valve (615) with the entrance of the compressor (604).
4. heat pump air conditioning system according to claim 1, which is characterized in that the heat pump air conditioning system is applied to electronic vapour
Vehicle, the first through-flow branch road are additionally provided with plate heat exchanger (612), the plate heat exchanger (612) while are arranged on described
In the electromotor cooling system of electric vehicle.
5. heat pump air conditioning system according to claim 4, which is characterized in that the first through-flow branch road is provided with first
Switch valve (610), the refrigerant inlet (612a) of the plate heat exchanger (612) and the outlet of the outdoor heat exchanger (605)
Connection, the refrigerant outlet (612b) of the plate heat exchanger (612) are connected with the entrance of the first switch valve (610).
6. heat pump air conditioning system according to claim 4, which is characterized in that the electromotor cooling system includes and the plate
The motor, motor radiator (613) and water pump (614) that formula heat exchanger (612) is connected to be formed into a loop.
7. heat pump air conditioning system according to claim 1, which is characterized in that the system also includes gas-liquid separators
(611), the outlet of the indoor evaporator (602) is connected with the entrance of the gas-liquid separator (611), the outdoor heat exchanger
(605) outlet is connected via the described first through-flow branch with the entrance of the gas-liquid separator (611), the gas-liquid separator
(611) outlet is connected with the entrance of the compressor (604).
8. heat pump air conditioning system according to claim 1, which is characterized in that the inner flow passage is included respectively with described the
The first flow (506) and second flow channel (507) that one import (501a) is connected with second import (501b), it is described first-class
The first valve port (516) coordinated with first spool (503) is formed on road (506), the throttle orifice (505) is formed in institute
It states in second flow channel (507) to be formed as the second valve port (517) coordinated with second spool (504), the first flow
(506) it is intersected in the downstream of second valve port (517) with the second flow channel (507) and is connected with the outlet (502).
9. heat pump air conditioning system according to claim 8, which is characterized in that the second flow channel (507) and the outlet
(502) it is mutually perpendicular to, the first flow (506) is formed as the first through hole being mutually parallel with the second flow channel (507)
(526), second import (501b) passes through the second through-hole (527) being opened on the second flow channel (507) side wall and institute
State second flow channel (507) connection, the first through hole (526) and second through-hole (527) respectively with first import
(501a) is connected with second import (501b).
10. heat pump air conditioning system according to claim 9, which is characterized in that the first through hole (526) and described second
Runner (507) is connected respectively by third through-hole (508) and fourth hole (509) with the outlet (502), the third through-hole
(508) and fourth hole (509) is coaxial and open up in opposite directions, and be mutually perpendicular to export (502).
11. according to the heat pump air conditioning system described in any one in claim 1 or 8-10, which is characterized in that described first
Import (501a) and the second import (501b) are opened in parallel to each other on the same side of the valve body (500), the outlet
(502) first import (501a) and the second import (501b) are respectively parallel to.
12. heat pump air conditioning system according to claim 11, which is characterized in that the outlet (502) is arranged on described the
Between one spool (503) and second spool (504).
13. according to the heat pump air conditioning system described in any one of claim 8-10, which is characterized in that first spool
(503) along the coaxial laying of moving direction and first valve port (516) selectively to block or be detached from first valve port
(516)。
14. according to the heat pump air conditioning system described in any one of claim 8-10, which is characterized in that second spool
(504) along the coaxial laying of moving direction and second valve port (517) selectively to block or be detached from second valve port
(517)。
15. heat pump air conditioning system according to claim 13, which is characterized in that first spool (503) is including first
Valve rod (513) and the first plug (523) for being connected to the first valve rod (513) end, first plug (523) are pressed for sealing
It leans against on the end face of first valve port (516) to block the first flow (506).
16. heat pump air conditioning system according to claim 14, which is characterized in that second spool (504) is including second
Valve rod (514), the end of second valve rod (514) are formed as taper header structure, and second valve port (517) is formed as and the cone
The matched taper pore structure of forming head structure.
17. heat pump air conditioning system according to claim 1, which is characterized in that the valve body (500) is including forming in described
The valve seat (510) of portion's runner and the first valve casing (511) and the second valve casing (512) on the valve seat (510), described first
The first electromagnetic drive part (521) for driving first spool (503), second valve casing are installed in valve casing (511)
(512) the second electromagnetic drive part (522) for driving second spool (504), first spool (503) are installed in
Extend to the inner flow passage in the valve seat (510) from first valve casing (511), second spool (504) is from institute
State the inner flow passage that the second valve casing (512) is extended in the valve seat (510).
18. heat pump air conditioning system according to claim 17, which is characterized in that the valve seat (510) is formed as polyhedron
Structure, first valve casing (511) and second valve casing (512) are arranged on the same surface of the polyhedral structure, described
First import (501a) and second import (501b) are arranged on the same surface of the polyhedral structure, and first valve
Shell (511), first import (501a) and the outlet (502) are separately positioned on the different surfaces of the polyhedral structure,
Wherein, the installation direction of first valve casing (511) and second valve casing (512) is mutually parallel, first import
(501a) and the opening direction of the outlet (502) are mutually parallel.
19. a kind of electric vehicle, which is characterized in that including the heat pump air conditioner system according to any one in claim 1-18
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246469.9A CN108248331B (en) | 2016-12-29 | 2016-12-29 | Heat pump air conditioning system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246469.9A CN108248331B (en) | 2016-12-29 | 2016-12-29 | Heat pump air conditioning system and electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108248331A true CN108248331A (en) | 2018-07-06 |
| CN108248331B CN108248331B (en) | 2023-11-14 |
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ID=62719982
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611246469.9A Active CN108248331B (en) | 2016-12-29 | 2016-12-29 | Heat pump air conditioning system and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108248331B (en) |
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| WO2021239137A1 (en) * | 2020-05-29 | 2021-12-02 | 杭州三花研究院有限公司 | Heat management system |
| CN114454689A (en) * | 2022-01-28 | 2022-05-10 | 重庆长安新能源汽车科技有限公司 | Integrated heat pump air conditioning system, control method and automobile |
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| Publication number | Publication date |
|---|---|
| CN108248331B (en) | 2023-11-14 |
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