CN206374506U - Heat pump type air conditioning system and electric automobile - Google Patents

Heat pump type air conditioning system and electric automobile Download PDF

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Publication number
CN206374506U
CN206374506U CN201621476094.0U CN201621476094U CN206374506U CN 206374506 U CN206374506 U CN 206374506U CN 201621476094 U CN201621476094 U CN 201621476094U CN 206374506 U CN206374506 U CN 206374506U
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valve
switch valve
expansion switch
road junction
flow channel
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黄健
陈雪峰
叶梅娇
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BYD Co Ltd
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BYD Co Ltd
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Abstract

This disclosure relates to a kind of heat pump type air conditioning system and electric automobile.Heat pump type air conditioning system includes compressor, indoor condenser, indoor evaporator, outdoor heat exchanger and two expansion switch valves, the outlet of compressor is connected with the entrance of indoor condenser, the outlet of indoor condenser is connected with the second road junction of the first expansion switch valve, the third flow channel mouthful of first expansion switch valve is connected with the entrance of outdoor heat exchanger, the outlet of outdoor heat exchanger is connected with the third flow channel mouthful of the second expansion switch valve, the first-class road junction of second expansion switch valve is connected with the entrance of compressor, its second road junction is connected with the entrance of indoor evaporator, the outlet of indoor evaporator is connected with the entrance of compressor, the first-class road junction of the outlet of compressor or the outlet of indoor condenser also with the first expansion switch valve is connected.Thus, it is possible to reach raising heating efficiency, defrosting-defogging laws and regulations requirement is met, is easily installed, simplified pipeline connection, be easy to compressor oil return and other effects.

Description

Heat pump type air conditioning system and electric automobile
Technical field
This disclosure relates to automotive air-conditioning system, in particular it relates to which a kind of heat pump type air conditioning system, further relates to one kind and is provided with this The electric automobile of heat pump type air conditioning system.
Background technology
Electric automobile does not have engine exhaust heat of the orthodox car for heating, it is impossible to provide heating reservoir.Therefore, electronic vapour The air-conditioning system of car itself must have the function of heating, i.e., using heat pump type air conditioner system and/or electrical heating heat supply.
Publication No. CN102788397A utility model patent discloses a kind of electric automobile heat-pump air-conditioning system.The heat Although pump air conditioner system can be used in all kinds of electric automobiles, the system uses two outdoor heat exchanger (outdoors Condenser and an outdoor evaporator), cause that front-end module windage is larger, system architecture 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 type 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, prior art Use electric expansion valve and electromagnetic switch valve structure in parallel.This structure needs to use two three-way connections, six roots of sensation pipeline, Structure is more complicated, is not easy to install.Work as closed electromagnetic valve, during using electric expansion valve, electric expansion valve import is that middle temperature is high The liquid refrigerant of pressure, electronic expansion valve outlet is the liquid refrigerant of low-temp low-pressure, because pipeline is connection, so electromagnetism The import and export of valve are also consistent with the refrigerant condition of electric expansion valve import and export respectively, the refrigerant pressure temperature that magnetic valve is imported and exported Degree is different, and easily the internal structure to magnetic valve causes to damage.Further, since pipeline is relatively more, whole heat pump can be improved empty The refrigerant charge of adjusting system, improves cost.When heat pump type air conditioning system works at low temperature, compressor oil return can relatively be stranded Difficulty, this complicated structure can also be unfavorable for the oil return of heat pump type air conditioning system.
Utility model content
The purpose of the disclosure is to provide a kind of heat pump type air conditioning system and electric automobile, to solve above-mentioned technical problem.
To achieve these goals, according to the first aspect of the disclosure, there is provided a kind of heat pump type air conditioning system, including compression Machine, indoor condenser, indoor evaporator, outdoor heat exchanger and two expansion switch valves, each expansion switch valve include valve body, should First-class road junction, second road junction, third flow channel mouthful are formed with valve body and is connected in the first-class road junction, described second The first valve element and the second valve element are installed on inner flow passage between runner mouthful and the third flow channel mouthful, the inner flow passage, First valve element causes the first-class road junction directly to be connected with third flow channel mouth or disconnect connection, second valve element So that the second road junction is connected by throttle orifice with third flow channel mouth or disconnects connection, described two expansion switch valves Including the first expansion switch valve and the second expansion switch valve, the outlet of the compressor connects with the entrance of the indoor condenser Logical, the outlet of the indoor condenser is connected with the second road junction of the described first expansion switch valve, the first expansion switch The third flow channel mouthful of valve is connected with the entrance of the outdoor heat exchanger, and the outlet of the outdoor heat exchanger is expanded with described second The third flow channel mouthful connection of valve is closed, the first-class road junction of the second expansion switch valve is connected with the entrance of the compressor, institute The second road junction for stating the second expansion switch valve is connected with the entrance of the indoor evaporator, the outlet of the indoor evaporator with The entrance connection of the compressor, the outlet of the compressor or the outlet of the indoor condenser are also expanded with described first Close the first-class road junction connection of valve.
Alternatively, the outlet of the indoor evaporator is connected via check valve with the entrance of the compressor.
Alternatively, the heat pump type air conditioning system is applied to electric automobile, the first-class road junction of the second expansion switch valve Plate type heat exchanger is additionally provided between the compressor, the motor that the plate type heat exchanger is arranged on the electric automobile simultaneously is cold But in system.
Alternatively, the electromotor cooling system includes connecting to form motor, the motor in loop with the plate type heat exchanger Radiator and water pump.
Alternatively, the system also includes gas-liquid separator, and the outlet of the indoor evaporator and described second is expanded Close entrance of the first-class road junction of valve respectively with the gas-liquid separator to connect, the outlet of the gas-liquid separator and the compression The entrance connection of machine.
Alternatively, the third flow channel mouth of each expansion switch valve be arranged on first valve element and second valve element it Between.
Alternatively, the inner flow passage of each expansion switch valve include respectively with the first-class road junction and the second flow channel The first valve port coordinated with first valve element is formed with the first flow and second flow channel of mouth connection, the first flow, The throttle orifice is formed to be formed as the second valve port coordinated with second valve element in the second flow channel, described first-class Road and the second flow channel are intersected in the downstream of second valve port and connected with the third flow channel mouthful.
Alternatively, first valve element and the second valve element are parallel to each other.
Alternatively, the first valve element of each expansion switch valve is laid with optional along moving direction and first valve port are coaxial Block with selecting or depart from first valve port.
Alternatively, the first valve element of each expansion switch valve includes the first valve rod and is connected to the of first valve stem end One plug, first plug is used to be sealed against on the end face of first valve port to block the first flow.
Alternatively, the second valve element of each expansion switch valve is laid with optional along moving direction and second valve port are coaxial Block with selecting or depart from second valve port.
Alternatively, the second valve element of each expansion switch valve includes the second valve rod, and the end of second valve rod is formed as cone Forming head structure, second valve port is formed as the taper pore structure being engaged with the taper header structure.
Alternatively, the second flow channel of the first expansion switch valve is mutually perpendicular to third flow channel mouthful, first expansion The first flow of switch valve is formed as the first through hole that is parallel to each other of second flow channel with the described first expansion switch valve, and described the The second road junction of one expansion switch valve leads to by be opened on the second flow channel side wall of the first expansion switch valve second Hole is connected with the second flow channel of the described first expansion switch valve, the first through hole and the second through hole point of the first expansion switch valve Do not connected with the first-class road junction and second road junction of the described first expansion switch valve.
Alternatively, the first through hole and second flow channel of the first expansion switch valve are switched by the described first expansion respectively The third through-hole and fourth hole of valve are connected with the third flow channel mouthful of the described first expansion switch valve, the first expansion switch valve Third through-hole and fourth hole it is coaxial and open up in opposite directions and mutually vertical with the third flow channel mouthful of the described first expansion switch valve Directly.
Alternatively, the first-class road junction and second road junction of the first expansion switch valve are opened in described in parallel to each other On the same side of the valve body of first expansion switch valve, the third flow channel mouth of the first expansion switch valve is respectively parallel to described the The first-class road junction and second road junction of one expansion switch valve.
Alternatively, the second flow channel of the second expansion switch valve is opened up in the same direction with second road junction, second expansion The first flow of switch valve is opened up in the same direction with first-class road junction, and is formed as the second flow channel phase with the described second expansion switch valve Mutual parallel first through hole, the third flow channel mouthful of the second expansion switch valve is by being opened in the second expansion switch valve The second through hole on the wall of second flow channel side is connected with the second flow channel of the described second expansion switch valve, the second expansion switch valve Third flow channel respectively with the described second expansion switch valve of first through hole and the second through hole mouthful connect.
Alternatively, the third through-hole that the third flow channel mouthful of the second expansion switch valve passes through the described second expansion switch valve Connected with the first through hole of the described second expansion switch valve, the third flow channel mouthful of the second expansion switch valve passes through described second The fourth hole for expanding switch valve connect with the second through hole of the described second expansion switch valve, and described second expands the of switch valve Second through hole of three through holes, fourth hole and the second expansion switch valve is coaxially disposed, and the of the second expansion switch valve Three through holes are reversely opened up with fourth hole, and perpendicular to the first through hole of the described second expansion switch valve.
Alternatively, the first-class road junction and second road junction of the second expansion switch valve are opened in described in parallel to each other On the same side of the valve body of second expansion switch valve, the third flow channel mouthful of the second expansion switch valve is swollen with described second respectively The first-class road junction and second road junction of swollen switch valve are vertical.
Alternatively, the valve body of each expansion switch valve includes forming the valve seat of the inner flow passage and on the valve seat The first valve casing and the second valve casing, the first electromagnetic drive for driving first valve element is installed in first valve casing The second electromagnetic drive part for driving second valve element is installed, first valve element is from institute in portion, second valve casing The inner flow passage that the first valve casing is extended in the valve seat is stated, second valve element extends to described from second valve casing The inner flow passage in valve seat.
Alternatively, the valve seat of the first expansion switch valve is formed as polyhedral structure, the first expansion switch valve First valve casing and the second valve casing are arranged on the same surface of the polyhedral structure, the first flow of the first expansion switch valve Mouth and second road junction are arranged on the same surface of the polyhedral structure, and the first valve casing of the first expansion switch valve, First-class road junction and third flow channel mouthful are separately positioned on the different surfaces of the polyhedral structure, wherein, described first expands The first valve casing and the installation direction of the second valve casing for closing valve are parallel to each other, the first-class road junction of the first expansion switch valve and the The opening direction of three runners mouthful is parallel to each other.
Alternatively, the valve seat of the second expansion switch valve is formed as polyhedral structure, the second expansion switch valve First valve casing and the second valve casing are arranged on the same surface of the polyhedral structure, the first flow of the second expansion switch valve Mouth and second road junction are arranged on the same surface of the polyhedral structure, and the first valve casing of the second expansion switch valve, First-class road junction and third flow channel mouthful are separately positioned on the different surfaces of the polyhedral structure, wherein, described second expands The first valve casing and the installation direction of the second valve casing for closing valve are parallel to each other, the first-class road junction of the second expansion switch valve and the The opening direction of three runners mouthful is mutually perpendicular to.
According to the second aspect of the disclosure there is provided a kind of electric automobile, including provided according to the first aspect of the disclosure The heat pump type air conditioning system.
The heat pump type air conditioning system that the disclosure is provided, automobile can be achieved in the case where not changing refrigerant circulation direction empty Adjusting system freezes and heated, outdoor heat exchanger defrosting function, and can meet the demand of refrigeration and heating simultaneously.In outdoor heat exchanger During bypass defrosting, remain to meet in-car heating demand.Further, since the heat pump type air conditioning system of the disclosure is only with a room External heat exchanger, therefore, it is possible to reduce the windage of front-end module, solves the pure electric vehicle of 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 The problems such as asking, install complexity, reaches reduction energy consumption, simplied system structure, the effect for facilitating pipeline to arrange.In addition, by heat First is installed in pump air conditioner system and expands switch valve and the second expansion switch valve, can greatly simplify pipeline connection, reduce into This, and the refrigerant charge of whole heat pump type air conditioning system is reduced, it is easy to compressor oil return；In addition, the heat that the disclosure is provided The characteristics of pump air conditioner system has simple in construction, therefore it is easy to batch production.
Other feature and advantage of the disclosure will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing further understanding of the disclosure, and to constitute a part for specification, with following tool Body embodiment is used to explain the disclosure together, but does not constitute limitation of this disclosure.In the accompanying drawings：
Fig. 1 is the structural representation of the heat pump type air conditioning system provided according to a kind of embodiment of the disclosure；
Fig. 2 is the structural representation of the heat pump type air conditioning system provided according to the another embodiment of the disclosure；
Fig. 3 is the structural representation of the heat pump type air conditioning system provided according to the another embodiment of the disclosure；
Fig. 4 is the structural representation of the heat pump type air conditioning system provided according to the another embodiment of the disclosure；
Fig. 5 is in one direction vertical of the first expansion switch valve for being provided according to an illustrative embodiments of the disclosure Body structural representation；
Fig. 6 is the first expansion switch valve for being provided according to an illustrative embodiments of the disclosure along another direction Dimensional structure diagram；
Fig. 7 is the cross-section structure signal of the first expansion switch valve provided according to an illustrative embodiments of the disclosure Figure, wherein, the first valve port is in open mode, and the second valve port is in closure state；
Fig. 8 is that another cross-section structure of the first expansion switch valve provided according to an illustrative embodiments of the disclosure shows It is intended to, wherein, the first valve port is in closure state, and the second valve port is in open mode；
Fig. 9 is that the first internal structure of the first expansion switch valve provided according to an illustrative embodiments of the disclosure is shown It is intended to, wherein, the first valve port is in open mode；
Figure 10 is the second internal structure of the first expansion switch valve provided according to an illustrative embodiments of the disclosure Schematic diagram, wherein, the second valve port is in open mode；
Figure 11 be according to an illustrative embodiments of the disclosure provide second expansion switch valve in one direction Dimensional structure diagram；
Figure 12 is the second expansion switch valve for being provided according to an illustrative embodiments of the disclosure along another direction Dimensional structure diagram；
Figure 13 is the cross-section structure signal of the second expansion switch valve provided according to an illustrative embodiments of the disclosure Figure, wherein, the first valve port is in open mode, and the second valve port is in closure state；
Figure 14 is another cross-section structure of the second expansion switch valve provided according to an illustrative embodiments of the disclosure Schematic diagram, wherein, the first valve port is in closure state, and the second valve port is in open mode；
Figure 15 is the first internal structure of the second expansion switch valve provided according to an illustrative embodiments of the disclosure Schematic diagram, wherein, the first valve port is in open mode；
Figure 16 is the second internal structure of the second expansion switch valve provided according to an illustrative embodiments of the disclosure Schematic diagram, wherein, the second valve port is in open mode.
Embodiment
It is described in detail below in conjunction with accompanying drawing embodiment of this disclosure.It should be appreciated that this place is retouched The embodiment stated is merely to illustrate and explained the disclosure, is not limited to the disclosure.
In the disclosure, in the case where not making opposite explanation, the noun of locality used such as " upper and lower, left and right " is typically phase For the page of accompanying drawing, " upstream, downstream " is that, relative to medium, e.g., for the flow direction of refrigerant, have 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 automobile can include pure electric automobile, hybrid vehicle, fuel cell car.
Fig. 1 is a kind of structural representation of the heat pump type air conditioning system of embodiment according to the disclosure.As shown in figure 1, should System can include：HVAC (heating and ventilation and air-conditioning, Heating Ventilation and Air Conditioning) is total Into 600 and air door mechanism (not shown), wherein, air door mechanism can be used for conducting and lead to indoor evaporator 602 and indoor condensation The air channel of device 601.In addition, the system also includes the first expansion expansion of switch valve 1, second switch valve 2, compressor 604 and room External heat exchanger 605.Wherein, HVAC assemblies 600 can include indoor condenser 601 and indoor evaporator 602.Compressor 604 Export and connected with the entrance of indoor condenser 601, the outlet of indoor condenser 601 and the second flow channel of the first expansion switch valve 1 Mouth 10b connections, the third flow channel mouthful 10c of the first expansion switch valve 1 is connected with the entrance of outdoor heat exchanger 605, outdoor heat exchanger 605 outlet is connected with the third flow channel mouthful 20c of the second expansion switch valve 2, the first-class road junction 20a of the second expansion switch valve 2 Connected with the entrance of compressor 604, the second road junction 20b and the entrance of indoor evaporator 602 of the second expansion switch valve 2 connect Logical, the outlet of indoor evaporator 602 is connected with the entrance of compressor 604, and the outlet of indoor condenser 601 is also expanded with first Close the first-class road junction 10a connections of valve 1.In other words, expand switch valve via first the egress selection of outdoor heat exchanger 605 1 through-flow runner or throttling runner is connected with the entrance of outdoor heat exchanger 605.
In the disclosure, expansion switch valve is while having expansion valve function (also referred to as electric expansion valve function) and opening The valve of valve function (also referred to as magnetic valve function) is closed, it is the integrated of switch valve and expansion valve that can be regarded as.In expansion Switch valve has been internally formed through-flow runner and throttling runner, when expansion switch valve as switch valve in use, it is internal logical Runner conducting is flowed, through-flow branch road is now formed；When expansion switch valve as expansion valve in use, its internal throttling runner is led It is logical, now form throttling branch road.
It should be noted that above-mentioned " first-class road junction ", " second road junction " and " third flow channel mouthful " refers to expansion switch The terminal of the inner flow passage of valve, can be used for being connected with pipeline, for example, should " first-class road junction ", " second road junction " and the " the 3rd Runner mouthful " can be to expand the import or export for closing valve.
Fig. 2 shows the structural representation of the heat pump type air conditioning system of another embodiment according to the disclosure.Such as Fig. 3 institutes Show, the heat pump type air conditioning system can also include gas-liquid separator 611 and check valve 615, wherein, the outlet of indoor evaporator 602 Entrances of the first-class road junction 20a of switch valve 2 respectively with gas-liquid separator 611 is expanded with second to connect, gas-liquid separator 611 Outlet is connected with the entrance of compressor 604.So, the first-class road junction of switch valve 2 is expanded through indoor evaporator 602 or second The refrigerant of 20a outflows can first pass around gas-liquid separator 611 and carry out gas-liquid separation, and the gas isolated is back to compression again In machine 604, so as to prevent liquid refrigerant from entering compressor 604 and damaging compressor 604, so as to extend compressor 604 service life, and improve the efficiency of whole heat pump type air conditioning system.The outlet of indoor evaporator 602 by check valve 615 with The entrance connection of gas-liquid separator 611.Here, it is (following by detail in low temperature heating pattern in order to prevent to set check valve 615 Description) under refrigerant be back to indoor evaporator 602, influence heating effect.
Below by by taking Fig. 2 as an example come be described in detail the disclosure offer heat pump type air conditioning system under different mode of operations Cyclic process and principle.It should be appreciated that the system circulation under other embodiment (for example, embodiment shown in Fig. 1) Process and principle 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 formation one high-temperature refrigeration circulation System.As shown in Fig. 2 first, compressor 604 discharges the gas of HTHP through overcompression, is connected with indoor condenser 601. Now, wind is controlled without indoor condenser 601 by air door mechanism, passed through due to calm, therefore, condenser 601 indoors Interior to carry out heat exchange, the indoor condenser 601 is only used as runner, and it is still high temperature that now indoor condenser 601, which is exported, The gas of high pressure.Indoor condenser 601 is exported first to be expanded via the first-class road junction 10a of the first expansion switch valve 1 with this The third flow channel mouthful 10c connections of valve 1 are closed, now the 1 switch valve action of the first expansion switch valve, only flows through, now as runner The third flow channel mouthful 10c of first expansion switch valve 1 is still the gas of HTHP.The third flow channel mouthful of first expansion switch valve 1 10c is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 exchanges heat with outdoor air, heat is dispersed into air, outdoor is changed The hot outlet of device 605 is the liquid of middle temperature high pressure.Now, the outlet of outdoor heat exchanger 605 and the third flow channel of the second expansion switch valve 2 Mouth 20c is connected, and the third flow channel mouthful 20c is connected with second road junction 20b, and the second expansion switch valve 2 is played as restricting element Throttling action, it is low temperature and low pressure liquid that it, which is exported,.Second expansion switch valve 2 can give certain aperture according to the actual requirements, This aperture can be passed according to the pressure-temperature between the entrance of the outlet of indoor evaporator 602 and gas-liquid separator 611 The pressure and temperature gathered data of sensor calculates Refrigerant Superheat at Evaporator Outlet to adjust.The of second expansion switch valve 2 Second-rate road junction 20b is connected with the entrance of indoor evaporator 602, and low temperature and low pressure liquid is evaporated in evaporator 602 indoors, is made Obtain 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 is connected with the entrance of gas-liquid separator 611, and the liquid not being evaporated is passed through 611 points of gas-liquid separator From the gas of last low-temp low-pressure is returned in compressor 604, is consequently formed a circulation.The now stream of the apoplexy of HVAC assemblies 600 To indoor evaporator 602 is flowed only through, indoor condenser 601 is calm to be passed through, and is only flowed through as refrigerant flow path.
Pattern two：Low temperature heating pattern.System in this mode when, whole system formation one low temperature heating circulation System.As shown in Fig. 2 first, compressor 604 discharges the gas of HTHP through overcompression, is connected with indoor condenser 601, Now, indoor condenser 601 has a wind process, and the gas of HTHP is condensed in condenser 601 indoors so that interior is cold The outlet of condenser 601 is the liquid of middle temperature high pressure.Indoor condenser 601 exports the second road junction via the first expansion switch valve 1 10b is connected with the third flow channel mouthful 10c of the first expansion switch valve 1, and now the first expansion switch valve 1 plays expansion valve, Throttling action is played as restricting element, it exports the liquid for low-temp low-pressure.Wherein, the aperture of the first expansion switch valve 1 can To give certain aperture according to the actual requirements, this aperture can be according to the pressure-temperature installed in the exit of compressor 604 The numbers of the temperature acquisition data (i.e. compressor exhaust temperature) of sensor is adjusted.The third flow channel of first expansion switch valve 1 Mouth 10c is connected with the entrance of outdoor heat exchanger 605, and outdoor heat exchanger 605 absorbs the heat of outdoor air, outdoor heat exchanger 605 Export the gas for low-temp low-pressure.Now, the outlet of outdoor heat exchanger 605 and the third flow channel mouthful 20c phases of the second expansion switch valve 2 Even, the third flow channel mouthful 20c is connected with first-class road junction 20a, and refrigerant is directly entered gas-liquid point without indoor evaporator 602 From in device 611, the liquid not being evaporated is separated by gas-liquid separator 611, and the gas of last low-temp low-pressure returns to compressor 604 In, it is consequently formed a circulation.Now the wind in HVAC assemblies 600 simultaneously flows through indoor condenser 601 and indoor evaporator 602。
Pattern three：While refrigeration and heating pattern.System in this mode when, whole system formation one refrigeration and heating While open cycle system.As shown in Fig. 2 first, compressor 604 discharges the gas of HTHP through overcompression, with indoor condensation Device 601 is connected, and the gas of HTHP is condensed in condenser 601 indoors so that the indoor outlet of condenser 601 is middle temperature The liquid of high pressure.Indoor condenser 601 is exported first to be expanded via the second road junction 10b of the first expansion switch valve 1 with this The third flow channel mouthful 10c connections of valve 1 are closed, now the first expansion switch valve 1 plays expansion valve, and section is played as restricting element Stream is acted on, and it is low temperature and low pressure liquid that it, which is exported,.Wherein, the aperture of the first expansion switch valve 1 can give one according to the actual requirements Fixed aperture, this aperture can be according to the temperature acquisition data of the pressure-temperature sensor installed in the exit of compressor 604 The number of (i.e. compressor exhaust temperature) is adjusted.The third flow channel mouthful 10c and outdoor heat exchanger 605 of first expansion switch valve 1 It is connected, the outlet of outdoor heat exchanger 605 is the liquid of low-temp low-pressure, makes its outlet be the gas-liquid of low-temp low-pressure by incomplete evaporation Mixture.Now, the outlet of outdoor heat exchanger 605 is connected with the third flow channel mouthful 20c of the second expansion switch valve 2, the third flow channel Mouthful 20c is connected with the second road junction 20b of the second expansion switch valve 2, and second expands switch valve 2 as restricting element throttles one again Secondary, the second road junction 20b of the second expansion switch valve 2 outlet is the gas liquid mixture of low-temp low-pressure.Second expansion switch valve 2 Second road junction 20b be connected with indoor evaporator 602, the liquid of low-temp low-pressure is evaporated in evaporator 602 indoors, is made Obtain gas of the outlet of indoor evaporator 602 for low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, not evaporating Complete liquid is separated by gas-liquid separator 611, and the gas of last low-temp low-pressure is returned in compressor 604, is consequently formed one Circulation.Now the wind in HVAC assemblies 600 simultaneously flows through indoor condenser 601 and indoor evaporator 602.
Pattern four：Outdoor heat exchanger defrosting mode.As shown in Fig. 2 first, it is high that compressor 604 discharges high temperature through overcompression The gas of pressure, is connected with indoor condenser 601.Now, indoor condenser 601 only flows through as runner, and indoor condenser 601 goes out Mouth is still the gas of HTHP.Indoor condenser 601 exports the first-class road junction 10a via the first expansion switch valve 1 with being somebody's turn to do The third flow channel mouthful 10c connections of first expansion switch valve 1, now 1 switch valve action of the first expansion switch valve, only as runner Flow through, now the third flow channel mouthful 10c of the first expansion switch valve 1 is still the gas of HTHP.The of first expansion switch valve 1 Three runners mouthful 10c is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 is exchanged heat with outdoor air, and heat is dispersed into air In, the outlet of outdoor heat exchanger 605 is the liquid of middle temperature high pressure.Now, the outlet of outdoor heat exchanger 605 and the second expansion switch valve 2 Third flow channel mouthful 20c be connected, the third flow channel mouthful 20c is connected with the second second road junction 20b for expanding switch valve 2, the Two expansion switch valves 2 play throttling action as restricting element, and it is low temperature and low pressure liquid that it, which is exported,.Second expansion switch valve 2 is opened Degree can give certain aperture according to the actual requirements, and this aperture can be according to installed in the outlet of indoor evaporator 602 and gas The pressure and temperature gathered data of pressure-temperature sensor between the entrance of liquid/gas separator 611 calculates evaporator outlet refrigeration The agent degree of superheat is adjusted.The second road junction 20b outlets of second expansion switch valve 2 are connected with indoor evaporator 602, indoor evaporation The outlet of device 602 is the gas of low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is led to Cross gas-liquid separator 611 to separate, the gas of last low-temp low-pressure is returned in compressor 604, be consequently formed a circulation.Now HVAC assemblies 600 can not blow in.
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 type heat exchanger 612 is provided with whole heat pump type air conditioning system, the plate type heat exchanger 612 is also disposed in electronic simultaneously In the electromotor cooling system of automobile.So, it is possible to use the waste heat of electromotor cooling system gives air-conditioning system refrigerant heat, so that The suction temperature and inspiratory capacity of compressor 604 can be improved.Plate type heat exchanger 612 can be arranged on the of the second expansion switch valve 2 Between first-class road junction 20a and compressor 604, i.e. the expansion switch valves of the refrigerant inlet 612a of plate type heat exchanger 612 and second First-class road junction 10a connections, the refrigerant outlet 612b of plate type heat exchanger 612 is connected with the entrance of gas-liquid separator 611.
At the same time, plate type heat exchanger 612 is arranged in electromotor cooling system simultaneously.As shown in figure 3, electromotor cooling system It can include connecting to form the motor, motor radiator 613 and water pump 614 in loop with plate type heat exchanger 612.So, freeze Agent can carry out heat exchange by the coolant in plate type heat exchanger 612 and electromotor cooling system.
In the first heat pump type air conditioning system that the disclosure is provided, the various systems such as R134a, R410a, R32, R290 can be used Cryogen, it is preferential to select high temperature refrigerant.
Fig. 4 is the structural representation of the heat pump type air conditioning system provided according to second of embodiment of the disclosure, such as Fig. 4 institutes Show, the heat pump type air conditioning system can include the first expansion expansion of switch valve 1, second switch valve 2 described above, HVAC assemblies 600 and air door mechanism.As shown in Figure 2 and Figure 4, second of embodiment is provided heat pump type air conditioning system and the first embodiment party The structure for the heat pump type air conditioning system that formula is provided is similar, the difference for introducing two kinds of embodiments at this.Specifically, such as Shown in Fig. 4, in second of embodiment that the disclosure is provided, compressor 604 has first outlet 604a and second outlet 604b, wherein, first outlet 604a expands throttling runner and the outdoor of switch valve 1 via indoor condenser 601 and first successively Heat exchanger 605 is connected, and second outlet 604b is connected via the through-flow runner of the first expansion switch valve 1 with outdoor heat exchanger 605, That is, first-class road junction 10a of the outlet of compressor 604 also with the first expansion switch valve 1 is connected.And as shown in Fig. 2 in the disclosure In the first embodiment provided, compressor 604 has unique one outlet, and is connected with indoor condenser 601, indoor The outlet of condenser 601 is then optionally via the throttling runner or through-flow runner and outdoor heat exchanger of the first expansion switch valve 1 605 entrance connection.In other words, in second of embodiment, the refrigerant from the outflow of compressor 604 is not all by room Inner condenser 601, but optionally flow to indoor condenser 601 via its first outlet 604a, or second go out via it Mouth 604b flows to the first expansion switch valve 1.For example, when heat pump type air conditioning system is in high-temperature refrigeration pattern or outdoor heat exchanger defrosting When under pattern, refrigerant can bypass indoor condenser 601 and flow directly into outdoor heat exchanger 605, can reduce in this way Refrigerant total amount needed for heat pump type air conditioning system circulation.And in the first embodiment, from the outlet stream of indoor condenser 601 The refrigerant gone out must all flow to indoor condenser 601, subsequently selectively via the throttling runner of the first expansion switch valve 1 Or through-flow runner flows to outdoor heat exchanger 605.
Further, as shown in figure 4, the heat pump type air conditioning system can also include gas-liquid separator 611 and check valve 615, Wherein, indoor evaporator 602 outlet and second expand switch valve 2 first-class road junction 20a respectively with gas-liquid separator 611 Entrance is connected, and the outlet of gas-liquid separator 611 is connected with the entrance of compressor 604.So, through indoor evaporator 602 or The refrigerant of the first-class road junction 20a outflows of two expansion switch valves 2 can first pass around gas-liquid separator 611 and carry out gas-liquid point From the gas isolated is back in compressor 604 again, so as to prevent liquid refrigerant from entering compressor 604 and damage pressure Contracting machine 604, so as to extend the service life of compressor 604, and improves the efficiency of whole heat pump type air conditioning system.Indoor evaporation The outlet of device 602 is connected by check valve 615 with the entrance of gas-liquid separator 611.Here, it is in order to anti-to set check valve 615 Only refrigerant is back to indoor evaporator 602 under low temperature heating pattern (described in detail below), influences heating effect.
Circulation of the heat pump type air conditioning system of detailed disclosure offer under different mode of operations will be provided by taking Fig. 4 as an example below Process and principle.
Pattern one：High-temperature refrigeration pattern.System in this mode when, whole system formation one high-temperature refrigeration circulation System.As shown in figure 4, first, compressor 604 discharges the gas of HTHP, the second outlet of compressor 604 through overcompression 604b is connected via the first-class road junction 10a of the first expansion switch valve 1 with the third flow channel mouthful 10c of the first expansion switch valve 1, Now the 1 switch valve action of the first expansion switch valve, only flows through as runner, now the third flow channel of the first expansion switch valve 1 Mouth 10c is still the gas of HTHP.The third flow channel mouthful 10c of first expansion switch valve 1 is connected with outdoor heat exchanger 605, room External heat exchanger 605 is exchanged heat with outdoor air, and heat is dispersed into air, and the outlet of outdoor heat exchanger 605 is the liquid of middle temperature high pressure Body.Now, the outlet of outdoor heat exchanger 605 is connected with the third flow channel mouthful 20c of the second expansion switch valve 2, the third flow channel mouthful 20c Connected with second road junction 20b, the second expansion switch valve 2 plays throttling action as restricting element, it is low-temp low-pressure that it, which is exported, Liquid.Second expansion switch valve 2 can give certain aperture according to the actual requirements, and this aperture can indoors steam according to installing Send out the pressure and temperature gathered data meter of the pressure-temperature sensor between the outlet of device 602 and the entrance of gas-liquid separator 611 Refrigerant Superheat at Evaporator Outlet is calculated to adjust.The second road junction 20b and indoor evaporator 602 of second expansion switch valve 2 Entrance be connected, low temperature and low pressure liquid is evaporated in evaporator 602 indoors so that the outlet of indoor evaporator 602 is low temperature The gas of low pressure.The outlet of indoor evaporator 602 is connected with the entrance of check valve 615, the outlet and gas-liquid separation of check valve 615 The entrance of device 611 is connected, and the liquid not being evaporated is separated by gas-liquid separator 611, the gas of last low-temp low-pressure is returned to In compressor 604, a circulation is consequently formed.Now the flow direction of the apoplexy of HVAC assemblies 600 flows only through indoor evaporator 602, room Inner condenser 601 is calm to be passed through, and is only flowed through as refrigerant flow path.
Pattern two：Low temperature heating pattern.System in this mode when, whole system formation one low temperature heating circulation System.As shown in figure 4, first, compressor 604 discharges the gas of HTHP, the first outlet of compressor 604 through overcompression 604a is connected with the entrance of indoor condenser 601, and now, indoor condenser 601 has wind process, and the gas of HTHP is indoors Condensed in condenser 601 so that the indoor outlet of condenser 601 is the liquid of middle temperature high pressure.The indoor outlet of condenser 601 warp Connected by the second road junction 10b of the first expansion switch valve 1 with third flow channel mouth 10c of the first expansion switch valve 1, now the One expansion switch valve 1 plays expansion valve, plays throttling action as restricting element, it exports the liquid for low-temp low-pressure. Wherein, the aperture of the first expansion switch valve 1 can give certain aperture according to the actual requirements, this aperture can according to installed in The numbers of the temperature acquisition data (i.e. compressor exhaust temperature) of the pressure-temperature sensor in the exit of compressor 604 is adjusted Section.The third flow channel mouthful 10c of first expansion switch valve 1 is connected with the entrance of outdoor heat exchanger 605, and outdoor heat exchanger 605 absorbs The heat of outdoor air, the outlet of outdoor heat exchanger 605 is the gas of low-temp low-pressure.Now, the outlet of outdoor heat exchanger 605 and second The third flow channel mouthful 20c for expanding switch valve 2 is connected, and the third flow channel mouthful 20c is connected with first-class road junction 20a, the first flow Mouth 20a is connected with gas-liquid separator 611, and refrigerant is directly entered in gas-liquid separator 611 without indoor evaporator 602, not The liquid being evaporated is separated by gas-liquid separator 611, and the gas of last low-temp low-pressure is returned in compressor 604, is consequently formed One circulation.Now the wind in HVAC assemblies 600 simultaneously flows through indoor condenser 601 and indoor evaporator 602.
Pattern three：While refrigeration and heating pattern.System in this mode when, whole system formation one refrigeration and heating While open cycle system.As shown in figure 4, first, compressor 604 discharges the gas of HTHP through overcompression, compressor 604 First outlet 604a is connected with the entrance of indoor condenser 601, and now, indoor condenser 601 has wind process, the gas of HTHP Body is condensed in condenser 601 indoors so that the indoor outlet of condenser 601 is the liquid of middle temperature high pressure.Indoor condenser 601 outlets connect via the second road junction 10b and the first expansion switch valve 1 of the first expansion switch valve 1 third flow channel mouthful 10c Logical, now the first expansion switch valve 1 plays expansion valve, and throttling action is played as restricting element, and it is that low temperature is low that it, which is exported, Press liquid.Wherein, the aperture of the first expansion switch valve 1 can give certain aperture according to the actual requirements, and this aperture can root According to the temperature acquisition data (i.e. compressor exhaust temperature) of the pressure-temperature sensor installed in the exit of compressor 604 It is how many to adjust.The third flow channel mouthful 10c of first expansion switch valve 1 is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 goes out Mouth is the liquid of low-temp low-pressure, makes its outlet be the gas liquid mixture of low-temp low-pressure by incomplete evaporation.Now, outdoor heat exchange Device 605 is exported to be connected with the third flow channel mouthful 20c of the second expansion switch valve 2, the expansion switch valves of the third flow channel mouthful 20c and second 2 second road junction 20b connections, the second expansion switch valve 2 throttles once again as restricting element, the second expansion switch valve 2 Second road junction 20b outlet is the gas liquid mixture of low-temp low-pressure.The second road junction 20b of second expansion switch valve 2 and room Interior evaporator 602 is connected, and the liquid of low-temp low-pressure is evaporated in evaporator 602 indoors so that indoor evaporator 602 is exported For the gas of low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is passed through gas-liquid point Separated from device 611, the gas of last low-temp low-pressure is returned in compressor 604, be consequently formed a circulation.Now HVAC assemblies Wind in 600 simultaneously flows through indoor condenser 601 and indoor evaporator 602.
Pattern four：Outdoor heat exchanger defrosting mode.As shown in figure 4, first, it is high that compressor 604 discharges high temperature through overcompression The gas of pressure, the second outlet 604b of compressor 604 is first swollen with this via the first-class road junction 10a of the first expansion switch valve 1 The third flow channel mouthful 10c connections of swollen switch valve 1, now the 1 switch valve action of the first expansion switch valve, only flows through as runner, Now the third flow channel mouthful 10c of the first expansion switch valve 1 is still the gas of HTHP.3rd stream of the first expansion switch valve 1 Road junction 10c is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 exchanges heat with outdoor air, heat is dispersed into air, room The outlet of external heat exchanger 605 is the liquid of middle temperature high pressure.Now, the outlet of outdoor heat exchanger 605 and the 3rd of the second expansion switch valve 2 Runner mouthful 20c is connected, and the third flow channel 20c that cries is connected with second road junction 20b of the second expansion switch valve 2, and second expands Switch valve 2 plays throttling action as restricting element, and it is low temperature and low pressure liquid that it, which is exported,.Second expansion switch valve 2 aperture can be with Certain aperture is given according to the actual requirements, and this aperture can be according to installed in the outlet and gas-liquid separation of indoor evaporator 602 The pressure and temperature gathered data of pressure-temperature sensor between the entrance of device 611 calculates evaporator outlet refrigerant superheat Spend to adjust.The second road junction 20b outlets of second expansion switch valve 2 are connected with indoor evaporator 602, indoor evaporator 602 Export the gas for low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is passed through gas Liquid/gas separator 611 is separated, and the gas of last low-temp low-pressure is returned in compressor 604, is consequently formed a circulation.Now HVAC is total It can not be blown in into 600.
Under low temperature heating pattern and simultaneously refrigeration and heating pattern, in order to improve heating ability, it is preferable that whole Plate type heat exchanger (not shown) can be set in heat pump type air conditioning system, and the plate type heat exchanger is also disposed in electric automobile simultaneously In electromotor cooling system.So, it is possible to use the waste heat of electromotor cooling system gives air-conditioning system refrigerant heat, so as to improve The suction temperature and inspiratory capacity of compressor 604.Plate type heat exchanger can be arranged on the first-class road junction of the second expansion switch valve 2 Between 20a and compressor 604, i.e. the first-class road junction 10a of the refrigerant inlet of plate type heat exchanger and the second expansion switch valve connects Logical, the refrigerant outlet of plate type heat exchanger is connected with the entrance of gas-liquid separator 611.
At the same time, plate type heat exchanger is arranged in electromotor cooling system simultaneously.Electromotor cooling system can include and plate Formula heat exchanger connects to form the motor, motor radiator and water pump in loop.So, refrigerant can by plate type heat exchanger with Coolant in electromotor cooling system carries out heat exchange.
In summary, the heat pump type air conditioning system that the disclosure is provided, in the case where not changing refrigerant circulation direction Realize automotive air-conditioning system refrigeration and heat, outdoor heat exchanger defrosting function, and can meet at the same refrigeration and heating demand. During outdoor heat exchanger bypass defrosting, remain to meet in-car heating demand.Further, since the heat pump type air conditioning system of the disclosure is only Using an outdoor heat exchanger, therefore, it is possible to reduce the windage of front-end module, no engine exhaust heat circulatory system is solved 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, reach reduction energy consumption, simplied system structure, the effect for facilitating pipeline to arrange.This public affairs The characteristics of the heat pump type air conditioning system of offer is provided having simple in construction, therefore it is easy to batch production.
As described above, in the disclosure, expansion switch valve be while have the valve of expansion valve function and switch valve function, It is the integrated of switch valve and expansion valve that can be regarded as.It is swollen that the first expansion switch valve 1 and second will be hereinafter introduced successively The example embodiment of swollen switch valve 2.
[the first expansion switch valve 1]
As shown in Fig. 5 to Figure 10, the disclosure provides a kind of expansion switch valve, including valve body 10, wherein, shape on the valve body 10 Into having first-class road junction 10a, second road junction 10b, third flow channel mouthful 10c and connect in first-class road junction 10a, the second The first valve element 11a and the second valve element are installed on inner flow passage between road junction 10b and third flow channel mouthful 10c, inner flow passage 12a, the first valve element 11a cause first-class road junction 10a directly to connect or disconnect connection, the second valve element 12a with third flow channel mouthful 10c So that second road junction 10b connects or disconnected connection with third flow channel mouthful 10c by throttle orifice 13a.
Wherein, " the directly connection " that the first valve element 11a is realized refers to from the cold of the first-class road junction 10a entrance of valve body 10 But agent can cross the first valve element 11a and the third flow channel mouthful 10c of valve body 10 is insusceptibly flowed directly to by inner flow passage, " the disconnecting connection " that first valve element 11a is realized refers to not cross from the cooling agent of the first-class road junction 10a entrance of valve body 10 First valve element 11a and the third flow channel mouthful 10c that valve body 10 can not be flowed to by inner flow passage.It is " logical that second valve element 12a is realized Cross throttle orifice connection " refer to that the cooling agent from the second road junction 10b entrance of valve body 10 can cross the second valve element 12a and pass through Flow to the third flow channel mouthful 10c of valve body 10 after the throttling of throttle orifice, and " the disconnecting connection " that the second valve element 12a is realized refer to from The cooling agent that the second road junction 10b of valve body 10 enters can not cross the second valve element 12a and can not flow to valve by throttle orifice 13a The third flow channel mouthful 10c of body 10.
In other words, the expansion switch valve at least has the first operating position, the second operating position and the 3rd operating position, During the first operating position, the first valve element 11a causes first-class road junction 10a directly to be connected with third flow channel mouthful 10c, the second valve element 12a causes second road junction 10b disconnects with third flow channel mouthful 10c to connect；At the second operating position, the first valve element 11a causes First-class road junction 10a disconnects with third flow channel mouthful 10c to be connected, and the second valve element 12a causes second road junction 10b and third flow channel mouthful 10c is connected by throttle orifice 13a；At three operating positions, the first valve element 11a causes first-class road junction 10a and third flow channel Mouth 10c disconnects connection, and the second valve element 12a causes second road junction 10b disconnects with third flow channel mouthful 10c to connect.
So, by the control to the first valve element 11a and the second valve element 12a, the expansion switch valve that the disclosure is provided can be with So that at least realizing three kinds of states altogether from the first-class road junction 10a and second road junction 10b cooling agents entered.That is, 1) end State；2) the first valve element 11a direct connected state is crossed；And 3) the second valve element 12a throttling mode of communicating is crossed.
Wherein, the liquid refrigerant of HTHP can turn into the vaporific of low-temp low-pressure again after throttle orifice 13a throttlings Hydraulic pressure refrigerant, can be created conditions for the evaporation of refrigerant, i.e., throttle orifice 13a cross-sectional area is less than first-class road junction 10a, second road junction 10b and third flow channel mouthful 10c cross-sectional area, and can be by controlling the second valve element to adjust throttle orifice 13a aperture size, with flow of the controlling stream through throttle orifice 13a, is prevented because the refrigeration of the very few generation of refrigerant is not enough, Yi Jifang Only because refrigerant is excessive and causes compressor to produce liquid hit phenomenon.That is, the cooperation of the second valve element 12a and valve body 10 can cause swollen Swollen switch valve has the function of expansion valve.
So, by the same valve body 10 with first-class road junction 10a, second road junction 10b and third flow channel mouthful 10c Inner flow passage on the first valve element 11a and the second valve element 12a are installed, to realize first-class road junction, second road junction and the 3rd stream Break-make control or throttling control function between the 10c of road junction, it is simple in construction, it is easy to production and installation, and provided when the disclosure When expanding switch valve applied to heat pump, it is possible to reduce the refrigerant charge of whole heat pump, cost is reduced, simplifies pipe Road is connected, the more conducively oil return of heat pump.
As a kind of exemplary inner mounting structure of valve body 10, as shown in Fig. 5 to Figure 10, valve body 10 includes forming interior The valve seat 100a of portion's runner and the first valve casing 101a and the second valve casing 102a, the first valve casing 101a on valve seat 100a Inside it is provided with and is provided with for driving in the first valve element 11a the first electromagnetic drive part 103a, the second valve casing 102a for driving Second valve element 12a the second electromagnetic drive part 104a, the first valve element 11a are extended in valve seat 100a from the first valve casing 101a Portion's runner, the inner flow passage that the second valve element 12a is extended in valve seat 100a from the second valve casing 102a.
Wherein, by the first electromagnetic drive part 103a, e.g., magnet coil, the control of power on/off can easily control Make the position of the first valve element 11a internally runners, so control first-class road junction 10a directly connected with third flow channel mouthful 10c or Disconnect connection；By to the second electromagnetic drive part 104a, e.g., magnet coil, the control of power on/off can easily control The position of two valve element 12a internally runners, thus control second road junction 10b and third flow channel mouthful 10c whether with throttle orifice 13a Connection.In other words, electric expansion valve and magnetic valve have been installed in parallel in valve body 10, it is thus possible to realize the break-make of expansion switch valve And/or the Automated condtrol of throttling, and simplify pipeline trend.
For the locus for all directions for making full use of expansion switch valve, it is to avoid expansion switch valve and the connection of different pipelines Interference is produced, valve seat 100a is formed as polyhedral structure, and the first valve casing 101a and the second valve casing 102a are arranged on the polyhedron knot On the same surface of structure, first-class road junction 10a and second road junction 10b are arranged on the same surface of the polyhedral structure, and First valve casing 101a, first-class road junction 10a and third flow channel mouthful 10c are separately positioned on the different surfaces of the polyhedral structure, Wherein, the first valve casing 101a and the second valve casing 102a installation direction are parallel to each other, first-class road junction 10a and third flow channel mouthful 10c opening direction is parallel to each other.So, import, export pipeline can be connected on the different surfaces of polyhedral structure, energy Enough avoid pipeline arrangement it is in disorder, the problem of tangle.
As a kind of typical internal structure of electromagnetic expanding valve, as shown in Figure 7 to 10, inner flow passage include respectively with Formed on first-class road junction 10a and the second road junction 10b first flow 14a connected and second flow channel 15a, first flow 14a There are the first valve port 16a coordinated with the first valve element 11a, throttle orifice 13a to be formed on second flow channel 15a to be formed as and the second valve The second valve port 17a, first flow 14a and the second flow channel 15a that core 12a coordinates are intersected in the second valve port 17a downstream and with the Three runners mouthful 10c connections.
That is, realize the closing to the first valve port 16a by converting the position of the first valve element 11a internally runners or beat Open, and then control to connect blocking or turning on for first-class road junction 10a and third flow channel mouthful 10c throttling runner, so as to reality The connection of existing above-described magnetic valve or the function of disconnecting connection.Similarly, by converting the second valve element 12a runners internally Position realize the closing to the second valve port 17a or opening, and then control connection second road junction 10b and third flow channel mouthful 10c through-flow runner blocking or turning on, so as to realizing the throttling function of electric expansion valve.
First flow 14a can connect first-class road junction 10a and third flow channel mouthful 10c with any appropriate arrangement, Second flow channel 15a can be with any appropriate arrangement connection second road junction 10b and third flow channel mouthful 10c, to reduce valve The overall space-consuming of body, as shown in Figure 7 and Figure 8, second flow channel 15a are mutually perpendicular to third flow channel mouthful 10c, first flow 14a is formed as the first through hole 14A being parallel to each other with second flow channel 15a, and second road junction 10b is by being opened in second flow channel The second through hole 15A on the wall of 15a sides is connected with second flow channel 15a, first through hole 14A and the second through hole 15A respectively with it is first-class Road junction 10a is connected with second road junction 10b.
Farthest to shorten the total length of inner flow passage, as shown in Figure 7 and Figure 8, first through hole 14A and second flow channel 15a is connected by third through-hole 18a and fourth hole 19a with third flow channel mouthful 10c respectively, third through-hole 18a and fourth hole 19a is coaxial and opens up in opposite directions, and is mutually perpendicular to third flow channel mouthful 10c.In this manner it is possible to ensure the inside stream in valve body 10 The total length in road is most short, so as to ensure that refrigerant can quickly flow therethrough the expansion switch valve.
For convenience of the first-class road junction of valve body 10, the pipe joint of second road junction and third flow channel mouth respectively from different pipelines It is connected, as shown in Fig. 5 to Figure 10, first-class road junction 10a and second road junction 10b are opened in the same of valve body 10 in parallel to each other On side, third flow channel mouthful 10c is respectively parallel to first-class road junction 10a and second road junction 10b.So, positioned at the upper of valve body 10 The pipe joint of the pipeline in downstream can be respectively installed to the opposite sides of the valve body 10, and prevent that different pipeline arrangements are in disorder, entangle Situation about twining.
Further, it is the total length of farthest shortening inner flow passage, as shown in Figure 7 and Figure 8, third flow channel mouthful 10c is arranged between the first valve element 11a and the second valve element 12a.
It should be noted that third flow channel mouthful 10c herein is arranged between the first valve element 11a and the second valve element 12a, table Show projections of the third flow channel mouthful 10c in the plane being made up of the first valve element 11a and the second valve element 12a, positioned at the first valve element 11a And second between valve element 12a.
First valve element 11a and the second valve element 12a can be set with any appropriate angle, in a kind of exemplary embodiment party In formula, for convenience of arranging, as shown in Figure 7 and Figure 8, the first valve element 11a and the second valve element 12a are parallel to each other.
As shown in Figure 7 and Figure 8, for ease of realizing the first valve port 16a closing and opening, the first valve element 11a is along the side of movement To with the coaxial layings of the first valve port 16a selectively to block or depart from the first valve port 16a.
For ease of realizing the second valve port 17a closing and opening, as shown in Figure 7 and Figure 8, the second valve element 12a is along the side of movement To with the coaxial layings of the second valve port 17a selectively to block or depart from the second valve port 17a.
Further, as shown in Figure 7 and Figure 8, the reliability blocked for the first valve element 11a of guarantee to first flow 14a, the One valve element 11a can include the first valve rod 110a and be connected to the first plug 111a of the first valve rod 110a ends, and this first Plug 111a is used to be sealed against on the first valve port 16a end face to block first flow 14a.
For ease of the throttle orifice 13a of regulation expansion switch valve aperture size, as shown in Figure 7 and Figure 8, the second valve element 12a Including the second valve rod 120a, second valve rod 120a end is formed as taper header structure, and the second valve port 17a is formed as and the cone The taper pore structure that forming head structure is engaged.
Wherein, the throttle orifice 13a apertures of expansion switch valve can be adjusted by moving up and down for the second valve element 12a, and Moving up and down for second valve element 12a can be adjusted by the second electromagnetic drive part 104a.If expanding the throttle orifice 13a of switch valve Aperture be zero, as shown in figure 8, the second valve element 12a be in extreme lower position, the second valve element 12a block the second valve port 17a, refrigeration Agent can not pass through throttle orifice 13a, i.e. the second valve port 17a completely；If expansion switch valve throttle orifice 13a has aperture, such as Fig. 9 institutes Show that there is space between the taper header structure and throttle orifice 13a of the second valve element 12a end, the is flow to again after refrigerant throttling Three runners mouthful 10c.If desired increase expansion switch valve throttle opening when, can by control the second electromagnetic drive part 104a, So that the second valve element 12a is moved up, to cause conical head structure away from throttle orifice 13a, so as to realize throttle orifice 13a apertures Become big；On the contrary, when needing to reduce the throttle orifice 13a aperture of expansion switch valve, can drive and be moved under the second valve element 12a phases .
In use, when only needing to the magnetic 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 103a power-off, the first valve element 11a the first plug 111a departs from the first valve port 16a, the first valve port 16a and is in open mode；Second electromagnetic drive part 104a is powered, the second valve element 12a is in extreme lower position, and the second valve element 12a closure throttle orifice 13a, refrigerant can not pass through second from second road junction 10b Road 15a flows to third flow channel mouthful 10c, and the first valve port 16a, first through hole 14A and the can only be passed sequentially through from first-class road junction 10a Three through hole 18a are flowed into third flow channel mouthful 10c.
It should be noted that the dotted line with arrow in Fig. 7 and Fig. 9 represents stream of refrigerant when using magnetic valve function Path line and trend.
When only needing to 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 103a is powered, the first valve element 11a the first plug 111a envelopes Stifled first valve port 16a, the first valve port 16a are closed；Second electromagnetic drive part 104a is powered off, and the second valve element 12a is in Extreme higher position, the second valve element 12a departs from throttle orifice 13a, and refrigerant can not be flowed from first-class road junction 10a by first flow 14a To third flow channel mouthful 10c, the second through hole 15A, throttle orifice 13a and fourth hole 19a can only be passed sequentially through from second road junction 10b Flow into third flow channel mouthful 10c, and the second valve element 12a can be moved up and down to adjust the size of throttle orifice 13a aperture.
It should be noted that the dotted line with arrow in Fig. 8 and Figure 10, which represents refrigerant, is using electric expansion valve function When flow route and trend.
When the magnetic valve function and electric expansion valve function of expansion switch valve need not be used simultaneously, i.e., when expansion switch When valve is located at three above-mentioned operating position, the first electromagnetic drive part 103a is powered, the first valve element 11a the first plug 111a envelopes Stifled first valve port 16a, the first valve port 16a are closed；Second electromagnetic drive part 104a is powered, and the second valve element 12a is in Extreme lower position, the second valve element 12a closure throttle orifice 13a, no matter refrigerant is from first-class road junction 10a or second road junction 10b Third flow channel mouthful 10c, i.e. inner flow passage can not all be flowed to and be in cut-off state.
[the second expansion switch valve 2]
As shown in Figure 11 to 16, the disclosure also provides a kind of expansion switch valve, and the expansion switch valve is discussed in detail with above-mentioned First expansion switch valve structure it is essentially identical, introduce the difference of the two at this.
It is the total length for farthest shortening inner flow passage, such as Figure 13 and Figure 14 institutes in the second expansion switch valve 2 Show, second flow channel 25a is opened up in the same direction with second road junction 20b, first flow 24a is opened up in the same direction with first-class road junction 20a, and shape As the first through hole 24A being parallel to each other with second flow channel 25a, 20c is by being opened in second flow channel 25a sides wall for third flow channel mouthful On the second through hole 25A connected with second flow channel 25a, first through hole 24A and the second through hole 25A distinguish with third flow channel mouthful 20c Connection.
Further, it is the total length of farthest shortening inner flow passage, as shown in Figure 13 and Figure 14, third flow channel mouthful 20c is connected by third through-hole 28a with first through hole 24A, and third flow channel mouthful 20c passes through fourth hole 29a and the second through hole 25A Connection, third through-hole 28a, fourth hole 29a and the second through hole 25A are coaxially disposed, and third through-hole 28a and fourth hole 29a are anti- To opening up, and perpendicular to first through hole 24A.That is, the first-class road junction 20a, second road junction 20b, first through hole 24A, second Through hole 25A, third through-hole 28a and fourth hole 29A surround U-shaped structure, and two turnings of the U-shaped structure are right angle.With this Mode, ensure that the total length of inner flow passage in valve body 20 is most short, so that it is swollen to ensure that refrigerant can quickly flow therethrough this Swollen switch valve.
For convenience of the first-class road junction of valve body 20, the pipe joint of second road junction and third flow channel mouth respectively from different pipelines It is connected, as shown in Figure 11 to Figure 16, first-class road junction 20a and second road junction 20b are opened in the same of valve body 20 in parallel to each other On side, third flow channel mouthful 20c is vertical with first-class road junction 20a and second road junction 20b respectively.So, positioned at valve body 20 The pipe joint of the pipeline of upstream and downstream can be respectively installed to the opposite sides of the valve body 500, and prevent different pipelines arrangements it is in disorder, Situation about tangling.
In addition, the locus of all directions to make full use of expansion switch valve, it is to avoid expansion switch valve and different pipes Road connection produces interference, and valve seat 200a is formed as polyhedral structure, and it is many that the first valve casing 201a and the second valve casing 202a are arranged on this On the same surface of face body structure, first-class road junction 20a and second road junction 20b are arranged on the same surface of the polyhedral structure On, and the first valve casing 201a, first-class road junction 20a and third flow channel mouthful 20c are separately positioned on the different tables of the polyhedral structure On face, wherein, the first valve casing 201a and the second valve casing 202a installation direction are parallel to each other, the streams of first-class road junction 20a and the 3rd Road junction 20c opening direction is mutually perpendicular to.So, import, export pipeline can be connected to the different surfaces of polyhedral structure On, can avoid pipeline arrangement it is in disorder, the problem of tangle.
It should be appreciated that above-mentioned embodiment as just expansion switch valve one of which example, and and without In the limitation disclosure, there is the expansion switch valve of expansion valve function and switch valve function to be equally applicable to the disclosure simultaneously for other.
The disclosure also provides a kind of electric automobile, including the above-mentioned heat pump type air conditioning system provided according to the disclosure.Wherein, should Electric automobile can include pure electric automobile, hybrid vehicle, fuel cell car.
The preferred embodiment of the disclosure is described in detail above in association with accompanying 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 with technical scheme of this disclosure Monotropic type, these simple variants belong to the protection domain of the disclosure.
It is further to note that each particular technique feature described in above-mentioned embodiment, 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, can also be combined between a variety of embodiments of the disclosure, as long as it is without prejudice to originally Disclosed thought, it should equally be considered as disclosure disclosure of that.

Claims (21)

1. a kind of heat pump type air conditioning system, it is characterised in that including compressor (604), indoor condenser (601), indoor evaporator (602), outdoor heat exchanger (605) and two expansion switch valves,
Each expansion switch valve includes being formed with first-class road junction (10a, 20a), the on valve body (10,20), the valve body (10,20) Second-rate road junction (10b, 20b), third flow channel mouthful (10c, 20c) and connect in the first-class road junction (10a, 20a), described the It is provided with inner flow passage between second-rate road junction (10b, 20b) and the third flow channel mouthful (10c, 20c), the inner flow passage First valve element (11a, 21a) and the second valve element (12a, 22a), first valve element (11a, 21a) cause the first-class road junction (10a, 20a) and the third flow channel mouthful (10c, 20c) directly connect or disconnect connection, and second valve element (12a, 22a) makes Obtain the second road junction (10b, 20b) and the third flow channel mouthful (10c, 20c) passes through throttle orifice (13a, 23a) even on-off Open connection,
Described two expansion switch valves include the first expansion switch valve (1) and the second expansion switch valve (2), the compressor (604) outlet is connected with the entrance of the indoor condenser (601), the outlet of the indoor condenser (601) and described the Second road junction (10b) connection of one expansion switch valve (1), the third flow channel mouthful (10c) of the first expansion switch valve (1) with The entrance connection of the outdoor heat exchanger (605), the outlet of the outdoor heat exchanger (605) and the described second expansion switch valve (2) third flow channel mouthful (20c) connection, the first-class road junction (20a) of the second expansion switch valve (2) and the compressor (604) entrance connection, the second road junction (20b) of the second expansion switch valve (2) and the indoor evaporator (602) Entrance is connected, and the outlet of the indoor evaporator (602) is connected with the entrance of the compressor (604), the compressor (604) Outlet or the indoor condenser (601) outlet also with described first expansion switch valve (1) first-class road junction (10a) even It is logical.
2. heat pump type air conditioning system according to claim 1, it is characterised in that the outlet warp of the indoor evaporator (602) Connected by check valve (615) with the entrance of the compressor (604).
3. heat pump type air conditioning system according to claim 1, it is characterised in that the heat pump type air conditioning system is applied to electronic vapour Car, board-like change is additionally provided between the first-class road junction (20a) of the second expansion switch valve (2) and the compressor (604) Hot device (612), the plate type heat exchanger (612) is while be arranged in the electromotor cooling system of the electric automobile.
4. heat pump type air conditioning system according to claim 3, it is characterised in that the electromotor cooling system includes and the plate Formula heat exchanger (612) connects to form the motor, motor radiator (613) and water pump (614) in loop.
5. heat pump type air conditioning system according to claim 1, it is characterised in that the system also includes gas-liquid separator (611), the outlet of the indoor evaporator (602) and it is described second expansion switch valve (2) first-class road junction (20a) respectively with The entrance connection of the gas-liquid separator (611), the outlet of the gas-liquid separator (611) and entering for the compressor (604) Mouth connection.
6. heat pump type air conditioning system according to claim 1, it is characterised in that the third flow channel mouthful of each expansion switch valve (10c, 20c) is arranged between first valve element (11a, 21a) and second valve element (12a, 22a).
7. heat pump type air conditioning system according to claim 1, it is characterised in that the inner flow passage of each expansion switch valve includes The first flow (14a, 24a) connected respectively with the first-class road junction (10a, 20a) and the second road junction (10b, 20b) With second flow channel (15a, 25a), it is formed with the first flow (14a, 24a) and first valve element (11a, 21a) coordinates The first valve port (16a, 26a), the throttle orifice (13a, 23a) forms in the second flow channel (15a, 25a) to be formed as The second valve port (17a, 27a) coordinated with second valve element (12a, 22a), the first flow (14a, 24a) and described the Two runners (15a, 25a) are intersected in the downstream of second valve port (17a, 27a) and connected with the third flow channel mouthful (10c, 20c) It is logical.
8. heat pump type air conditioning system according to claim 7, it is characterised in that the first valve element of each expansion switch valve (11a, 21a) coaxially lays selectively to block or depart from described the along moving direction and first valve port (16a, 26a) One valve port (16a, 26a).
9. heat pump type air conditioning system according to claim 8, it is characterised in that the first valve element of each expansion switch valve (11a, 21a) includes the first valve rod (110a, 210a) and is connected to the first plug of the first valve rod (110a, the 210a) end (111a, 211a), first plug (111a, 211a) is used to be sealed against on the end face of first valve port (16a, 26a) To block the first flow (14a, 24a).
10. heat pump type air conditioning system according to claim 7, it is characterised in that the second valve element of each expansion switch valve (12a, 22a) coaxially lays selectively to block or depart from described the along moving direction and second valve port (17a, 27a) Two valve ports (17a, 27a).
11. heat pump type air conditioning system according to claim 10, it is characterised in that the second valve element of each expansion switch valve (12a, 22a) includes the second valve rod (120a, 220a), and the end of second valve rod (120a, 220a) is formed as taper header structure, Second valve port (17a, 27a) is formed as the taper pore structure being engaged with the taper header structure.
12. heat pump type air conditioning system according to claim 7, it is characterised in that the second of the first expansion switch valve (1) Runner (15a) is mutually perpendicular to third flow channel mouthful (10c), and the first flow (14a) of the first expansion switch valve (1) is formed as The first through hole (14A) being parallel to each other with the second flow channel (15a) of the described first expansion switch valve (1), described first expands The second road junction (10b) of valve (1) is closed by being opened on second flow channel (15a) side wall of the first expansion switch valve (1) The second through hole (15A) with described first expansion switch valve (1) second flow channel (15a) connect, it is described first expand switch valve (1) the first-class road junction (10a) of first through hole (14A) and the second through hole (15A) respectively with the described first expansion switch valve (1) Connected with second road junction (10b).
13. heat pump type air conditioning system according to claim 12, it is characterised in that the of the first expansion switch valve (1) One through hole (14A) and second flow channel (15a) pass through the third through-hole (18a) and the 4th of the described first expansion switch valve (1) respectively Through hole (19a) is connected with the third flow channel mouthful (10c) of the described first expansion switch valve (1), the first expansion switch valve (1) Third through-hole (18a) and fourth hole (19a) are coaxial and open up in opposite directions, and are flowed with the 3rd of the described first expansion switch valve (1) (10c) is mutually perpendicular at road junction.
14. the heat pump type air conditioning system according to any one in claim 1 or 6-13, it is characterised in that described first The first-class road junction (10a) of expansion switch valve (1) and second road junction (10b) are opened in described first and expanded in parallel to each other On the same side for the valve body (10) for closing valve (1), the third flow channel mouthful (10c) of the first expansion switch valve (1) is respectively parallel to The first-class road junction (10a) of the first expansion switch valve (1) and second road junction (10b).
15. heat pump type air conditioning system according to claim 7, it is characterised in that the second of the second expansion switch valve (2) Runner (25a) is opened up in the same direction with second road junction (20b), the first flow (24a) and first of the second expansion switch valve (2) Runner mouthful (20a) is opened up in the same direction, and is formed as what is be parallel to each other with the second flow channel (25a) of the described second expansion switch valve (2) First through hole (24A), the third flow channel mouthful (20c) of the second expansion switch valve (2) is expanded by being opened in described second Close the second flow channel of the second through hole (25A) and the described second expansion switch valve (2) on second flow channel (25a) side wall of valve (2) (25a) is connected, and the first through hole (24A) and the second through hole (25A) of the second expansion switch valve (2) are swollen with described second respectively Third flow channel mouthful (20c) connection of swollen switch valve (2).
16. heat pump type air conditioning system according to claim 15, it is characterised in that the of the second expansion switch valve (2) Third through-hole (28a) and the second expansion switch valve (2) that three runners mouthful (20c) pass through the described second expansion switch valve (2) First through hole (24A) connection, the third flow channel mouthful (20c) of the second expansion switch valve (2) expands by described second The fourth hole (29a) for closing valve (2) is connected with the second through hole (25A) of the described second expansion switch valve (2), second expansion The second through hole (25A) of the third through-hole (28a) of switch valve (2), fourth hole (29a) and the second expansion switch valve (2) It is coaxially disposed, the third through-hole (28a) of the second expansion switch valve (2) is reversely opened up with fourth hole (29a), and perpendicular to The first through hole (24A) of the second expansion switch valve (2).
17. the heat pump type air conditioning system according to any one in claim 1,6-11,15-16, it is characterised in that described The first-class road junction (20a) of two expansion switch valves (2) and second road junction (20b) are opened in second expansion in parallel to each other On the same side of the valve body (20) of switch valve (2), the third flow channel mouthful (20c) of the second expansion switch valve (2) respectively with institute First-class road junction (20a) and second road junction (20b) for stating the second expansion switch valve (2) are vertical.
18. heat pump type air conditioning system according to claim 1, it is characterised in that the valve body (10,20) of each expansion switch valve Valve seat (100a, 200a) and the first valve casing on the valve seat (100a, 200a) including forming the inner flow passage It is provided with (101a, 201a) and the second valve casing (102a, 202a), first valve casing (101a, 201a) described for driving It is provided with the first electromagnetic drive part (103a, 203a) of first valve element (11a, 21a), second valve casing (102a, 202a) The second electromagnetic drive part (104a, 204a) for driving second valve element (12a, 22a), first valve element (11a, 21a) the inner flow passage extended to from first valve casing (101a, 201a) in the valve seat (100a, 200a), described The inside that two valve elements (12a, 22a) are extended in the valve seat (100a, 200a) from second valve casing (102a, 202a) Runner.
19. heat pump type air conditioning system according to claim 18, it is characterised in that the valve of the first expansion switch valve (1) Seat (100a) is formed as polyhedral structure, the first valve casing (101a) and the second valve casing of the first expansion switch valve (1) (102a) is arranged on the same surface of the polyhedral structure, it is described first expansion switch valve (1) first-class road junction (10a) and (10b) is arranged on the same surface of the polyhedral structure at second road junction, and the first valve of the first expansion switch valve (1) Shell (101a), first-class road junction (10a) and third flow channel mouthful (10c) are separately positioned on the different surfaces of the polyhedral structure, Wherein, the first valve casing (101a) of the first expansion switch valve (1) and the installation direction of the second valve casing (102a) are parallel to each other, The first-class road junction (10a) of the first expansion switch valve (1) and the opening direction of third flow channel mouthful (10c) are parallel to each other.
20. heat pump type air conditioning system according to claim 18, it is characterised in that the valve of the second expansion switch valve (2) Seat (200a) is formed as polyhedral structure, the first valve casing (201a) and the second valve casing of the second expansion switch valve (2) (202a) is arranged on the same surface of the polyhedral structure, it is described second expansion switch valve (2) first-class road junction (20a) and (20b) is arranged on the same surface of the polyhedral structure at second road junction, and the first valve of the second expansion switch valve (2) Shell (201a), first-class road junction (20a) and third flow channel mouthful (20c) are separately positioned on the different surfaces of the polyhedral structure, Wherein, the first valve casing (201a) of the second expansion switch valve (2) and the installation direction of the second valve casing (202a) are parallel to each other, The first-class road junction (20a) of the second expansion switch valve (2) and the opening direction of third flow channel mouthful (20c) are mutually perpendicular to.
21. a kind of electric automobile, it is characterised in that including the heat pump air conditioner system according to any one in claim 1-20 System.
CN201621476094.0U 2016-12-29 2016-12-29 Heat pump type air conditioning system and electric automobile Active CN206374506U (en)

Priority Applications (1)

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CN201621476094.0U CN206374506U (en) 2016-12-29 2016-12-29 Heat pump type air conditioning system and electric automobile

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Application Number Priority Date Filing Date Title
CN201621476094.0U CN206374506U (en) 2016-12-29 2016-12-29 Heat pump type air conditioning system and electric automobile

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108248332A (en) * 2016-12-29 2018-07-06 比亚迪股份有限公司 heat pump air conditioning system and electric vehicle
CN114940049A (en) * 2022-06-29 2022-08-26 西安交通大学 Vehicle thermal management system with air reversing type HVAC and control method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108248332A (en) * 2016-12-29 2018-07-06 比亚迪股份有限公司 heat pump air conditioning system and electric vehicle
CN108248332B (en) * 2016-12-29 2023-10-17 比亚迪股份有限公司 Heat pump air conditioning system and electric automobile
CN114940049A (en) * 2022-06-29 2022-08-26 西安交通大学 Vehicle thermal management system with air reversing type HVAC and control method thereof

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