CN205784045U - Heat pump type air conditioning system and electric automobile - Google Patents

Abstract

The utility model discloses a kind of heat pump type air conditioning system and electric automobile.Described heat pump type air conditioning system includes compressor (604), indoor condenser (601), indoor evaporator (602) and outdoor heat exchanger (605), the outlet of described compressor (604) connects with the entrance of described indoor condenser (601), the egress selection ground of described indoor condenser (601) connects via the entrance of the through-flow branch road of first throttle branch road or first with described outdoor heat exchanger (605), the egress selection ground of described outdoor heat exchanger (605) connects via the entrance of the second through-flow branch road with described compressor (604) or connects with the entrance of described indoor evaporator (602) via the second throttling branch road, the outlet of described indoor evaporator (602) connects with the entrance of described compressor (604).Thus, it is possible to reach to improve heating efficiency, meet defrosting-defogging laws and regulations requirement, it is simple to the effects such as installation.

Description

Heat pump type air conditioning system and electric automobile

Technical field

This utility model relates to automotive air-conditioning system, in particular it relates to a kind of heat pump type air conditioning system, also relates to And a kind of electric automobile being provided with this heat pump type air conditioning system.

Background technology

Electric automobile does not has the orthodox car engine exhaust heat for heating, it is impossible to provide heating reservoir.Cause This, the air conditioning system of electric automobile self must have the function of heating, i.e. uses heat pump type air conditioner system And/or electrical heating heat supply.

It is empty that the utility model patent of Publication No. CN102788397A discloses a kind of electric automobile heat-pump Adjusting system.Although this heat pump type air conditioning system can use in all kinds of electric automobiles, but this system uses Two outdoor heat exchangers (an outdoor condenser and an outdoor evaporator), cause front-end module Windage is relatively big, and system structure is more complicated, affects heating effect.

Utility model content

The purpose of this utility model is to provide a kind of heat pump type air conditioning system and electric automobile, to solve without starting The pure electric vehicle of machine waste heat circulation system or hybrid electric vehicle use the automobile heat pump air conditioner of electric-only mode System heating efficiency is low, cannot meet defrosting-defogging laws and regulations requirement, install the problems such as complicated.

To achieve these goals, according to first aspect of the present utility model, it is provided that a kind of heat pump air conditioner system System, including compressor, indoor condenser, indoor evaporator and outdoor heat exchanger, going out of described compressor Mouth connects with the entrance of described indoor condenser, and the egress selection ground of described indoor condenser is via first Throttling branch road or the first through-flow branch road connect with the entrance of described outdoor heat exchanger, described outdoor heat exchanger Egress selection ground connects or via the second throttling with the entrance of described compressor via the second through-flow branch road Branch road connects with the entrance of described indoor evaporator, the outlet of described indoor evaporator and described compressor Entrance connects.

Alternatively, described first through-flow branch road is provided with the first switch valve, on described first throttle branch road It is provided with the first expansion valve.

Alternatively, described system also includes expanding switch valve, the entrance of this expansion switch valve and described indoor The outlet of condenser, the outlet of this expansion switch valve connects with the entrance of described outdoor heat exchanger, institute Stating the throttling runner that first throttle branch road is described expansion switch valve, described first through-flow branch road is described swollen The through-flow runner of swollen switch valve.

Alternatively, described second through-flow branch road is provided with second switch valve, on described second throttling branch road It is provided with the second expansion valve.

Alternatively, the outlet of described indoor evaporator connects via the entrance of check valve with described compressor.

Alternatively, described heat pump type air conditioning system is applied to electric automobile, and described second through-flow branch road also sets Being equipped with plate type heat exchanger, this plate type heat exchanger is simultaneously located at the electromotor cooling system of described electric automobile In.

Alternatively, described second through-flow branch road is provided with second switch valve, the system of described plate type heat exchanger Cryogen entrance and the outlet of described outdoor heat exchanger, the refrigerant outlet of described plate type heat exchanger and institute State the entrance connection of second switch valve.

Alternatively, described electromotor cooling system includes the electricity connected to form loop with described plate type heat exchanger Mechanical, electrical machine radiator and water pump.

Alternatively, described system also includes gas-liquid separator, the outlet of described indoor evaporator and described gas Liquid/gas separator entrance connection, the outlet of described outdoor heat exchanger via described second through-flow branch road with described The entrance connection of gas-liquid separator, the outlet of described gas-liquid separator connects with the entrance of described compressor.

Alternatively, described system also includes ptc heater, and this ptc heater flows through institute for heating State the wind of indoor condenser.

Alternatively, described ptc heater is arranged on windward side or the leeward side of described indoor condenser.

According to second aspect of the present utility model, it is provided that a kind of electric automobile, including according to this utility model First aspect provide described heat pump type air conditioning system.

The heat pump type air conditioning system that this utility model provides, in the case of not changing refrigerant cycle direction i.e. Can realize automotive air-conditioning system refrigeration and heat, outdoor heat exchanger defrosting function, and can meet and make simultaneously The demand of cold heating.During outdoor heat exchanger bypass defrosting, remain to meet heating demand in car.This Outward, owing to heat pump type air conditioning system of the present utility model is only with an outdoor heat exchanger, therefore, it is possible to reduce The windage of front-end module, solves the pure electric vehicle without electromotor waste heat circulation system or hybrid power The automobile heat pump air-conditioning system heating efficiency of car use electric-only mode is low, cannot meet defrosting-defogging regulation Require, the problems such as complicated are installed, reduce energy consumption, simplied system structure, facilitate the effect that pipeline is arranged Really.The heat pump type air conditioning system that this utility model provides has the feature of simple in construction, is thus susceptible to batch raw Produce.

Other feature and advantage of the present utility model will give in detailed description of the invention part subsequently in detail Explanation.

Accompanying drawing explanation

Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes one of description Point, it is used for explaining this utility model together with detailed description below, but is not intended that this practicality Novel restriction.In the accompanying drawings:

Fig. 1 is the structural representation of the heat pump type air conditioning system according to a kind of embodiment of the present utility model；

Fig. 2 is the structural representation of the heat pump type air conditioning system according to another embodiment of the present utility model Figure；

Fig. 3 is the structural representation of the heat pump type air conditioning system according to another embodiment of the present utility model Figure；

Fig. 4 is the structural representation of the heat pump type air conditioning system according to another embodiment of the present utility model Figure；

Fig. 5 is the structural representation of the heat pump type air conditioning system according to another embodiment of the present utility model Figure；

Fig. 6 is the plan structure schematic diagram expanding switch valve that this utility model preferred implementation provides；

Fig. 7 is along the cross-sectional view crossed by Fig. 6 center line AB-AB, wherein, the first valve port It is in open mode with the second valve port；

Fig. 8 is the facing along a visual angle expanding switch valve that this utility model preferred implementation provides Structural representation；

Fig. 9 is along the cross-sectional view crossed by Fig. 6 center line AB-AB, wherein, the first valve port Being in open mode, the second valve port is in closure state；

Figure 10 is along the cross-sectional view crossed by Fig. 6 center line AB-AB, wherein, the first valve port Being in closure state, the second valve port is in open mode；

Figure 11 be this utility model preferred implementation provide expand switch valve along another visual angle Face structural representation；

Figure 12 is along the cross-sectional view crossed by Figure 11 center line AC-AC, wherein, the first valve Mouth is in open mode, and the second valve port is in closure state；

Figure 13 is that the first internal structure expanding switch valve that this utility model preferred implementation provides is shown Being intended to, wherein, the first valve port and the second valve port are in open mode；

Figure 14 is the partial enlarged drawing in A portion in Figure 13；

Figure 15 is that the second internal structure expanding switch valve that this utility model preferred implementation provides is shown Being intended to, wherein, the first valve port is in open mode, and the second valve port is closed；

Figure 16 is that the 3rd internal structure expanding switch valve that this utility model preferred implementation provides is shown Being intended to, wherein, the first valve port is closed, and the second valve port is in open mode.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It is to be understood that It is that detailed description of the invention described herein is merely to illustrate and explains this utility model, is not used to limit This utility model processed.

In this utility model, in the case of illustrating on the contrary, the noun of locality of use as " upper and lower, Left and right " it is typically for the page of accompanying drawing, " upstream, downstream " is relative to matchmaker It is situated between, e.g., for the flow direction of cold-producing medium, specifically, is downstream towards the flow direction of cold-producing medium, The flow direction deviating from cold-producing medium is upstream, and " inside and outside " refers to the interior and outer of corresponding component profile.

In this utility model, electric automobile can include pure electric automobile, hybrid vehicle, fuel Battery car.

Fig. 1 is the structural representation of the heat pump type air conditioning system according to a kind of embodiment of the present utility model. As it is shown in figure 1, this system may include that HVAC (heating and ventilation and air-conditioning, Heating Ventilation And Air Conditioning) assembly 600 and air door mechanism (not shown), wherein, air door mechanism is permissible For leading to indoor evaporator 602 and the air channel of indoor condenser 601.Additionally, described system is also Including compressor 604 and outdoor heat exchanger 605.Wherein, HVAC assembly 600 can include indoor cold Condenser 601 and indoor evaporator 602.The outlet of compressor 604 connects with the entrance of indoor condenser 601 Logical, the egress selection ground of indoor condenser 601 is via the through-flow branch road of first throttle branch road or first and room The entrance connection of external heat exchanger 605, the egress selection ground of outdoor heat exchanger 605 is via the second throttling Road connects with the entrance of indoor evaporator 602 or connects via the entrance of the second through-flow branch road compressor 604 Logical, the outlet of indoor evaporator 602 connects with the entrance of compressor 604.

In this utility model, the outlet of indoor condenser 601 otherwise via first throttle branch road with outdoor The entrance connection of heat exchanger 605, or connect via the entrance of the first through-flow branch road with outdoor heat exchanger 605 Logical.Various ways can be used to realize this mode of communicating.Such as, in one embodiment, as Shown in Fig. 1, heat pump type air conditioning system can also include expanding switch valve 603, this expansion switch valve 603 Entrance and the outlet of indoor condenser 601, the outlet of this expansion switch valve 603 and outdoor heat exchanger The entrance connection of 605, wherein, first throttle branch road is the throttling runner expanding switch valve 603, first Through-flow branch road is the through-flow runner expanding switch valve 603.

In this utility model, expanding switch valve is to have expansion valve function simultaneously (also referred to as electronics is swollen Swollen valve function) and the valve of switch valve function (also referred to as electromagnetic valve function), can be regarded as be Switch valve is integrated with expansion valve.Expand switch valve be internally formed through-flow runner and throttling runner, When expanding switch valve and using as switch valve, its internal through-flow runner conducting, now form through-flow Road；When expanding switch valve and using as expansion valve, its internal throttling runner conducting, now form joint Stream branch road.

Embodiment alternatively, as in figure 2 it is shown, this heat pump type air conditioning system can also include First switch valve 608 and the first expansion valve 607, wherein, the first through-flow branch road is provided with the first switch Valve 608, first throttle branch road is provided with the first expansion valve 607.Specifically, as in figure 2 it is shown, room The outlet of inner condenser 601 connects with shape with the entrance of outdoor heat exchanger 605 via the first switch valve 608 Becoming the first through-flow branch road, the outlet of indoor condenser 601 is via the first expansion valve 607 and outdoor heat exchanger The entrance of 605 connects to form first throttle branch road.When system is under high-temperature refrigeration pattern, first Switch valve 608 turns on, and the first expansion valve 607 cuts out, and the outlet of indoor condenser 601 is led to via first Stream branch road connects with the entrance of outdoor heat exchanger 605.When system is under low temperature heating pattern, first Expansion valve 607 turns on, and the first switch valve 608 cuts out, and the outlet of indoor condenser 601 is via first segment Stream branch road connects with the entrance of outdoor heat exchanger 605.

Pipeline is laid for convenience, saves space hold, it is preferable that at the heat pump that this utility model provides Air conditioning system uses and expands switch valve 603, i.e. the embodiment shown in Fig. 1.

Branch road through-flow with first in the embodiment of above-mentioned replacement and the implementation of first throttle branch road Similar, as it is shown in figure 1, be provided with second switch valve 610 on the second through-flow branch road, the second throttling The second expansion valve 609 it is provided with on road.Specifically, as it is shown on figure 3, the outlet of outdoor heat exchanger 605 Connecting to form the second through-flow branch road with the entrance of compressor 604 via second switch valve 610, outdoor is changed The outlet of hot device 605 connects with the entrance of indoor evaporator 602 to form the via the second expansion valve 609 Two throttling branch roads.When system is under high-temperature refrigeration pattern, the second expansion valve 609 turns on, and second opens Closing valve 610 to close, the outlet of outdoor heat exchanger 605 is via the second throttling branch road and indoor evaporator 602 Entrance connection.When system is under low temperature heating pattern, second switch valve 610 turns on, and second is swollen Swollen valve 609 cuts out, outlet the entering via the second through-flow branch road and compressor 604 of outdoor heat exchanger 605 Mouth connection.

Fig. 3 shows the structural representation of the heat pump type air conditioning system according to another embodiment of the present utility model Figure.As it is shown on figure 3, this heat pump type air conditioning system can also include gas-liquid separator 611 and check valve 615, Wherein, the outlet of indoor evaporator 602 connects with the entrance of gas-liquid separator 611, gas-liquid separator 611 Outlet connect with the entrance of compressor 604.So, the cold-producing medium flowed out through indoor evaporator 602 can Carrying out gas-liquid separation first passing around gas-liquid separator 611, isolated gas is back to compressor again In 604, thus prevent liquid refrigerant from entering into compressor 604 and damaging compressor 604, thus can To extend the service life of compressor 604, and improve the efficiency of whole heat pump type air conditioning system.Indoor evaporation The outlet of device 602 is connected by the entrance of check valve 615 with gas-liquid separator 611.Here, list is set It is to prevent cold-producing medium under low temperature heating pattern (described in detail below) to be back to room to valve 615 Interior vaporizer 602, affects heating effect.

The heat pump type air conditioning system of this utility model offer will be described in detail different below as a example by Fig. 3 Cyclic process under mode of operation and principle.It should be appreciated that other embodiments (such as, Fig. 1 To the embodiment shown in Fig. 3) under system cyclic process and principle be similar to Fig. 3, the most just Repeat the most one by one.

Pattern one: high-temperature refrigeration pattern.System in this mode time, whole system formed one high Temperature cooling cycle system.As it is shown on figure 3, first, compressor 604 discharges High Temperature High Pressure through overcompression Gas, is connected with indoor condenser 601.Now, wind is controlled without indoor condensation by air door mechanism Device 601, due to calm process, therefore, will not carry out heat exchange, this room in indoor condenser 601 Inner condenser 601 is only used as runner and uses, and now indoor condenser 601 exports still gas for High Temperature High Pressure Body.Indoor condenser 601 exports and expands switch valve 603 and be connected, and now expansion switch valve 603 is opened Close valve action, be only used as runner and flow through, now expand switch valve 603 and export still for the gas of High Temperature High Pressure. Expansion switch valve 603 exports and is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 changes with outdoor air Heat, is dispersed into heat in air, and outdoor heat exchanger 605 outlet is the liquid of middle temperature high pressure.Now, Second switch valve 610 cuts out, and outdoor heat exchanger 605 exports and is connected with the second expansion valve 609, and second is swollen Swollen valve 609 plays throttling action as restricting element, and its outlet is Low temperature low pressure liquid.Second expansion valve 609 apertures can give certain aperture according to the actual requirements, and this aperture can be according to being arranged on indoor steaming Send out the pressure of pressure-temperature sensor between outlet and the entrance of gas-liquid separator 611 of device 602 and temperature Degree gathers data calculating Refrigerant Superheat at Evaporator Outlet and regulates.Second expansion valve 609 exports and room The entrance of interior vaporizer 602 is connected, and Low temperature low pressure liquid is evaporated in indoor evaporator 602, makes Obtain the gas that indoor evaporator 602 outlet is low-temp low-pressure.The outlet of indoor evaporator 602 and check valve The entrance of 615 is connected, and the outlet of check valve 615 is connected with the entrance of gas-liquid separator 611, not steaming The liquid distributed 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 flow direction of HVAC assembly 600 apoplexy flows only through indoor evaporator 602, the indoor calm process of condenser 601, it is only used as refrigerant flow path and flows through.

Pattern two: low temperature heating pattern.System in this mode time, whole system formed one low Temperature heating circulation system.As it is shown on figure 3, first, compressor 604 discharges High Temperature High Pressure through overcompression Gas, is connected with indoor condenser 601, and now, indoor condenser 601 has wind process, High Temperature High Pressure Gas condense in indoor condenser 601 so that indoor condenser 601 outlet is middle temperature high pressure Liquid.Indoor condenser 601 exports and expands switch valve 603 and be connected, now expansion switch valve 603 Playing the effect of expansion valve, play throttling action as restricting element, its outlet is the liquid of low-temp low-pressure. Wherein, the aperture expanding switch valve 603 can give certain aperture according to the actual requirements, and this aperture can The temperature acquisition data of pressure-temperature sensor in the exit of compressor 604 it are arranged on (i.e. with basis Compressor exhaust temperature) number regulate.Expand switch valve 603 outlet and outdoor heat exchanger 605 Entrance is connected, the heat of outdoor heat exchanger 605 absorption chamber outer air, and outdoor heat exchanger 605 outlet is for low The gas of temperature low pressure.Now, second switch valve 610 is opened, and the second expansion valve 609 cuts out, cold-producing medium Being directly entered in gas-liquid separator 611 without indoor evaporator 602, the liquid not being evaporated passes through gas Liquid/gas separator 611 separates, and the gas of last low-temp low-pressure returns to, in compressor 604, be consequently formed one Circulation.

Pattern three: refrigeration and heating pattern simultaneously.System in this mode time, whole system formed one Individual refrigeration and heating open cycle system simultaneously.As it is shown on figure 3, first, compressor 604 is discharged through overcompression The gas of High Temperature High Pressure, is connected with indoor condenser 601, and the gas of High Temperature High Pressure is at indoor condenser 601 Inside condense so that indoor condenser 601 outlet is the liquid of middle temperature high pressure.Indoor condenser 601 Export and be connected with expansion switch valve 603, now expand switch valve 603 and play the effect of expansion valve, as joint Fluid element plays throttling action, and its outlet is Low temperature low pressure liquid.Wherein, opening of switch valve 603 is expanded Degree can give certain aperture according to the actual requirements, and this aperture can be according to being arranged on compressor 604 The temperature acquisition data (i.e. compressor exhaust temperature) of the pressure-temperature sensor in exit number come Regulation.Expansion switch valve 603 exports and is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 outlet is The liquid of low-temp low-pressure, makes it export still by incomplete evaporation and keeps Low temperature low pressure liquid state.Now, Second switch valve 610 cuts out, and the second expansion valve 609 is opened, and the second expansion valve 609 is as restricting element Throttle again once.Second expansion valve 609 exports and is connected with indoor evaporator 602, the liquid of low-temp low-pressure It is evaporated in indoor evaporator 602 so that indoor evaporator 602 outlet 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 passed through gas-liquid separator 611 separate, and the gas of last low-temp low-pressure returns in compressor 604, is consequently formed a circulation.This Time HVAC assembly 600 in wind simultaneously flow through indoor condenser 601 and indoor evaporator 602.

Pattern four: outdoor heat exchanger defrosting mode.As it is shown on figure 3, first, compressor 604 is through overvoltage The gas of High Temperature High Pressure of indenting out, is connected with indoor condenser 601.Now, indoor condenser 601 is only Flowing through as runner, indoor condenser 601 exports still gas for High Temperature High Pressure.Indoor condenser 601 Export and be connected with expansion switch valve 603, now expand switch valve 603 and play switch valve effect, be only used as stream Road flows through, and now expands switch valve 603 and exports still for the gas of High Temperature High Pressure.Expand switch valve 603 to go out Mouth is connected with outdoor heat exchanger 605, outdoor heat exchanger 605 and outdoor air heat exchange, and heat is dispersed into In air, outdoor heat exchanger 605 outlet is the liquid of middle temperature high pressure.Now, second switch valve 610 closes Closing, the second expansion valve 609 is opened, and the second expansion valve 609 plays throttling action as restricting element, its Outlet is Low temperature low pressure liquid.Second expansion valve 609 aperture can give certain opening according to the actual requirements Degree, this aperture can be according to the entrance of the outlet Yu gas-liquid separator 611 being arranged on indoor evaporator 602 Between pressure-temperature sensor pressure and temperature gather data calculate evaporator outlet refrigerant superheat Degree regulates.Second expansion valve 609 exports and is connected with indoor evaporator 602, and indoor evaporator 602 goes out Mouth is the gas of low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, not being evaporated Liquid separated by gas-liquid separator 611, the gas of last low-temp low-pressure returns in compressor 604, It is consequently formed a circulation.Now HVAC assembly 600 can not blow in.

In sum, the heat pump type air conditioning system that this utility model provides, do not changing refrigerant cycle direction In the case of can realize automotive air-conditioning system refrigeration and heat, outdoor heat exchanger defrosting function, and energy Meet the demand of refrigeration and heating simultaneously.During outdoor heat exchanger bypass defrosting, remain to meet Che Neicai Warm demand.Additionally, due to heat pump type air conditioning system of the present utility model is only with an outdoor heat exchanger, because of This can reduce the windage of front-end module, solves the pure electric vehicle without electromotor waste heat circulation system Or hybrid electric vehicle use electric-only mode automobile heat pump air-conditioning system heating efficiency low, cannot meet and remove Frost, except problems such as mist laws and regulations requirement, installation complexity, reduces energy consumption, simplied system structure, convenient pipe The effect that road is arranged.The heat pump type air conditioning system that this utility model provides has the feature of simple in construction, therefore It is prone to batch production.

In low temperature heating pattern and simultaneously under refrigeration and heating pattern, in order to improve heating ability, preferably Ground, as shown in Figure 4, is provided with plate type heat exchanger 612 in whole heat pump type air conditioning system, and this is board-like changes Hot device 612 is also disposed in the electromotor cooling system of electric automobile simultaneously.As such, it is possible to utilize motor The waste heat of cooling system is to air conditioning system refrigerant heat, thus can improve the suction temperature of compressor 604 And inspiration capacity.Plate type heat exchanger 612 can arbitrarily be arranged on upstream or the downstream of second switch valve 610. In the embodiment illustrated in fig. 4, plate type heat exchanger 612 is arranged on the upstream of second switch valve 610, That is, the refrigerant inlet 612a of plate type heat exchanger 612 and the outlet of outdoor heat exchanger 605, plate The refrigerant outlet 612b of formula heat exchanger 612 connects with the entrance of second switch valve 610.At another kind (not shown) in embodiment, plate type heat exchanger 612 is arranged on the downstream of second switch valve 610, i.e. The refrigerant inlet 612a of plate type heat exchanger 612 and the outlet of second switch valve 610, board-like change The refrigerant outlet 612b of hot device 612 connects with the entrance of gas-liquid separator 611.

Meanwhile, plate type heat exchanger 612 is simultaneously located in electromotor cooling system.As shown in Figure 4, Electromotor cooling system can include connecting to be formed the motor in loop, motor radiating with plate type heat exchanger 612 Device 613 and water pump 614.So, cold-producing medium can pass through plate type heat exchanger 612 and electromotor cooling system In coolant carry out heat exchange.

This utility model provide heat pump type air conditioning system in, can use R134a, R410a, R32, The various cold-producing medium such as R290, high temperature refrigerant in preferential selection.

Fig. 5 is the structural representation of the heat pump type air conditioning system according to another embodiment of the present utility model. As shown in Figure 6, HVAC assembly 600 can also include ptc heater 619, this ptc heater 619 for heating the wind flowing through indoor condenser 601.

In this utility model, ptc heater 619 can be that high pressure PTC (is driven by car load high-tension battery Dynamic), voltage range: 200V-900V.Or, ptc heater 619 can also be low pressure PTC (12V Or 24V accumulator drives), voltage range: 9V-32V.It addition, this ptc heater 619 can be The complete core body being made up of several or several pieces of PTC-ceramic sheet modules and radiating fin, it is also possible to Strip or the PTC-ceramic sheet module of bulk for band radiating fin.

In this utility model, this ptc heater 619 can be arranged in meeting of indoor condenser 601 Wind side or leeward side.Further, in order to improve the heats to the wind flowing through indoor condenser 601, should Ptc heater 619 can be arranged in parallel with indoor condenser 601.In other embodiments, should What ptc heater 619 can also be arranged in the casing of HVAC assembly 600 blows foot air port and defrosting outlet Place, it is also possible to be arranged at the air port of defrosting duct.

If the windward side or leeward of indoor condenser 601 in ptc heater 619 is arranged in casing Side, is arranged in parallel with indoor condenser 601, can grooving on casing housing, ptc heater 619 hangs down Straight cutting enters to put casing into, it is also possible to welding support on indoor condenser 601 side plate, ptc heater On 619 supports being fixed by screws in indoor condenser 601.If ptc heater 619 is arranged Blowing at foot air port and defrosting outlet at casing, or it is arranged at the air port of defrosting duct, screw can be passed through It is directly anchored at the air port of casing air outlet and wind passage mouth.

By this embodiment, when the outer temperature of car is too low, and the heating capacity of heat pump low temperature heating is unsatisfactory for car During interior demand, ptc heater 619 auxiliary heating heating can be run, thus can eliminate heat pump air conditioner When system hypothermia heats, heating capacity is little, and car load defrosting-defogging is slow, the defects such as heating effect is the best.

As it has been described above, in this utility model, expanding switch valve is to have expansion valve function and switch simultaneously The valve of valve function, can be regarded as be switch valve with expansion valve integrated.Will be provided below one Plant the example embodiment of expansion switch valve.

As shown in Figure 6, expansion switch valve mentioned above can include valve body 500, wherein, this valve body Import 501, outlet 502 and connection it is formed with in import 501 and exporting between 502 on 500 Portion's runner, inner flow passage is provided with the first spool 503 and the second spool 504, and the first spool 503 makes Obtaining import 501 and directly connect or disconnect connection with outlet 502, the second spool 504 makes import 501 He Outlet 502 is connected by restriction 505 or is disconnected connection.

Wherein, the first spool is realized " directly connection " refers to that the import 501 from valve body 500 enters Coolant can cross the first spool and flow directly to valve body 500 insusceptibly by inner flow passage Outlet 502, " disconnecting connection " that the first spool is realized refers to that the import 501 from valve body 500 enters Coolant cannot cross the first spool and the outlet 502 of valve body 500 can not be flowed to by inner flow passage. " being connected by restriction " that second spool is realized refers to the cold of import 501 entrance from valve body 500 But agent can cross the second spool and by flowing to the outlet 502 of valve body 500 after the throttling of restriction, and " disconnect connection " that second spool is realized refer to the coolant that enters from the import 501 of valve body 500 without Method is crossed the second spool and can not be flowed to the outlet 502 of valve body 500 by restriction 505.

So, by the first spool and the control of the second spool, expansion switch valve of the present utility model can So that the coolant from import 501 entrance at least realizes three kinds of states.That is, 1) cut-off state；2) Cross the direct connected state of the first spool 503；And 3) cross the second spool 504 throttling connection Mode.

Wherein, the liquid refrigerant of High Temperature High Pressure after restriction 505 throttles, can become low temperature again The vaporific hydraulic pressure cold-producing medium of low pressure, can be that the evaporation of cold-producing medium creates conditions, i.e. restriction 505 Cross-sectional area is less than the cross-sectional area of outlet 504, and by controlling the second spool, restriction 505 Aperture size can regulate, and to control to flow through the flow of restriction 505, prevents because of the very few generation of cold-producing medium Refrigeration not enough, and prevent from too much making compressor produce liquid hit phenomenon because cold-producing medium.That is, second The cooperation of spool 504 and valve body 500 has the function of expansion valve so that expand switch valve.

So, by installing the first spool 503 and the second spool on the inner flow passage of same valve body 500 504, to realize break-make control and/or the joint flow control function of import 501 and outlet 502, simple in construction, It is readily produced and installs, and when the expansion switch valve that this utility model provides is applied to heat pump, can To reduce the refrigerant charge of whole heat pump, reduce cost, simplify pipeline and connect, be more conducive to heat The oil return of pumping system.

As a kind of exemplary inner mounting structure of valve body 500, as shown in Fig. 6 to Figure 11, valve Body 500 includes the valve seat 510 forming inner flow passage and the first valve casing 511 being arranged on this valve seat 510 With the second valve casing 512, the first electromagnetism for driving the first spool 503 is installed in first valve casing 511 Drive division 521, is provided with the second Electromagnetic Drive for driving the second spool 504 in the second valve casing 512 Portion 522, the first spool 503 extends to the inner flow passage in valve seat 510 from the first valve casing 511, and second Spool 504 extends to the inner flow passage in valve seat 510 from the second valve casing 512.

Wherein, by the first electromagnetic drive part 521, e.g., solenoid, the control energy of power on/off Enough control the position of the first spool 503 easily, and then control import 501 directly connects with outlet 502 Or disconnect connection；By to the second electromagnetic drive part 522, e.g., solenoid, the control of power on/off Can control the position of the second spool 504 easily, thus control import 501 and outlet 502 whether with Restriction 505 connects.In other words, total import 501 and outlet 502 it have been installed in parallel in valve body 500 Electric expansion valve and electromagnetic valve, it is thus possible to realize expanding the break-make of switch valve and/or the automatization of throttling Control, and simplify pipeline trend.

For making full use of the locus of all directions expanding switch valve, it is to avoid expand switch valve and difference Pipeline connects to produce and interferes, and valve seat 510 is formed as polyhedral structure, first valve casing the 511, second valve casing 512, import 501 and outlet 502 are separately positioned on the different surfaces of this polyhedral structure, wherein, The installation direction of the first valve casing 511 and the second valve casing 512 is mutually perpendicular to, import 501 and outlet 502 Opening direction is mutually perpendicular to.As such, it is possible to import, export pipeline to be connected to the difference of polyhedral structure On surface, it is possible to avoid pipeline to arrange problem in disorder, that tangle.

As the typical internal structure of the one expanding switch valve, as shown in Figures 6 to 9, inner flow passage Including the first flow 506 connected with import 501 respectively and the second runner 507, on first flow 506 Being formed with the first valve port 516 coordinated with the first spool 503, restriction 505 is formed at the second runner 507 On to be formed as the second valve port 517 coordinated with the second spool 504, first flow 506 and the second runner 507 downstreams being intersected in the second valve port 517 also connect with outlet 502.

That is, realize the closedown to the first valve port 516 or open by converting the position of the first spool 503, And then control blocking or turning on of the connection import 501 first flow 506 with outlet 502, such that it is able to Realize the connection of above-described electromagnetic valve or disconnect the function of connection.Similarly, by converting the second valve The position of core 504 realizes blocking or turning on the second valve port 517, such that it is able to realize electronic expansion The throttling function of valve.

First flow 506 and the second runner 507 can be respectively communicated with import with the arrangement of any appropriate 501 take up room with outlet 502, the entirety for minimizing valve body 500, as shown in Figure 10, and the second runner 507 offer in the same direction with outlet 502, and first flow 506 is formed as orthogonal with the second runner 507 First through hole 526, import 501 by the second through hole 527 of being opened on the second runner 507 sidewall with Second runner 507 connects, and the first through hole 526 and the second through hole 527 are respectively communicated with import 501.Its In, the first through hole 526 or can be arranged in parallel in spatial vertical setting with the second through hole 527, this reality With novel, this is not restricted, belongs among protection domain of the present utility model.

Take up room for simplifying the entirety of valve body 500 further, as shown in Figure 13 to Figure 16, import 501 It is opened in mutual vertically on valve body 500 with outlet 502.So, as shown in FIG. 13 to 15, enter The axis of mouth 501, the axis (axis of the i.e. second runner 507) of outlet 502, and first flow 506 Axis the most vertically arranged in space, thus prevent the first spool 503 and shifting of the second spool 504 Movable property is raw interferes, and can utilize the inner space of valve body 500 substantially.

As shown in Figure 9 and Figure 10, for ease of realizing the closedown of the first valve port 516 and opening, the first valve Core 503 is coaxially laid selectively to block or depart from the first valve port along moving direction and the first valve port 516 516。

For ease of realizing the closedown of the second valve port 517 and opening, the second spool 504 is along moving direction and Two valve ports 517 are coaxially laid selectively to block or depart from the second valve port 517.

Wherein, as shown in figure 12, reliable for ensureing that first flow 506 is blocked by the first spool 503 Property, the first spool 503 can include the first valve rod 513 and be connected to the of this first valve rod 513 end One plug 523, this first plug 523 is for being sealed against on the end face of the first valve port 516 with closure First flow 506.

For ease of the aperture size of the restriction 505 of regulation expansion switch valve, as shown in Figure 9 and Figure 10, Second spool 504 includes the second valve rod 514, and the end of this second valve rod 514 is formed as conical head structure, Second valve port 517 is formed as the bellmouth structure matched with this conical head structure.

Wherein, restriction 505 aperture expanding switch valve can moving up and down by the second spool 504 Regulate, and moving up and down of the second spool 504 can be regulated by the second electromagnetic drive part 522. If the aperture expanding the restriction 505 of switch valve is zero, as it is shown in figure 9, the second spool 504 is in Lower position, the second spool 504 blocks the second valve port 517, and cold-producing medium can not pass through restriction 505 completely, I.e. second valve port 517；If expanding switch valve restriction 505 there is aperture, as shown in Figure 10, the second valve There is between conical head structure and the restriction 505 of the end of core 504 space, flow again after cold-producing medium throttling To outlet 502.When if desired increasing the throttle opening expanding switch valve, can be by controlling the second electromagnetism Drive division 522 so that the second spool 504 moves up, so that conical head structure is away from restriction 505, Thus the change that realizes restriction 505 aperture is big；On the contrary, when needing to reduce the restriction 505 of expansion switch valve Aperture time, can order about under the second spool 504 phase mobile.

During use, when having only to use the electromagnetic valve function expanding switch valve, such as Fig. 9, Figure 12 and Tu Shown in 15, the first spool 503 departs from the first valve port 516, and the first valve port 516 is in open mode, the Two spools 504 are in extreme lower position, and throttle orifice 505 is blocked by the second spool 504, from import 501 The cold-producing medium flowing into inner flow passage can not pass through throttle orifice 505 completely, can only pass sequentially through the first valve port 516, during the first through hole 526 flows into outlet 502.When electromagnetic valve power-off, the first spool 503 is to the left Mobile, the first plug 523 and the first valve port 516 separate, and cold-producing medium can lead to from the first through hole 526 Cross；Working as solenoid valves, the first spool 503 moves right, the first plug 523 and the first valve port 516 Laminating, cold-producing medium cannot pass through from the first through hole 526.

It should be noted that the dotted line of the band arrow in Fig. 9 and Figure 15 represents cold-producing medium is using electromagnetism Flow route during valve function and trend.

When having only to use the electric expansion valve function expanding switch valve, as shown in Figure 10 and Figure 16, Second valve port 517, i.e. restriction 505 are in open mode, and the first spool 503 blocks the first valve port 516, The cold-producing medium flowing into inner flow passage from import 501 cannot pass through the first through hole 526, can only pass sequentially through Second through hole 527, restriction 505 flow in outlet 502, and can move up and down the second spool The size of 504 apertures regulating restriction 505.

It should be noted that the dotted line of the band arrow in Figure 10 and Figure 16 represents cold-producing medium is using electronics Flow route during expansion valve function and trend.

When needing to use electromagnetic valve function and the electric expansion valve function expanding switch valve simultaneously, as Fig. 7, Shown in Figure 13 and Figure 14, wherein, the dotted line of band arrow represents glide path and the trend of cold-producing medium, First spool 503 departs from the first valve port 516, and the first valve port 516 is in open mode, restriction 505 Being in open mode, the cold-producing medium flowing into inner flow passage can be respectively along first flow 506 and second Road 507 flows to outlet 502, thus has electromagnetic valve function and electric expansion valve function simultaneously.

It should be appreciated that above-mentioned embodiment is as just the one of which example of expansion switch valve, and And it being not limited to this utility model, other have expansion valve function and the expansion of switch valve function simultaneously Switch valve is equally applicable to this utility model.

This utility model also provides for a kind of electric automobile, including the above-mentioned heat pump provided according to this utility model Air conditioning system.Wherein, this electric automobile can include pure electric automobile, hybrid vehicle, fuel electricity Pond automobile.

Preferred implementation of the present utility model is described in detail above in association with accompanying drawing, but, this practicality is new Type is not limited to the detail in above-mentioned embodiment, in technology concept of the present utility model, The technical solution of the utility model can be carried out multiple simple variant, these simple variant belong to this reality With novel protection domain.

It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid need not The repetition wanted, various possible compound modes are illustrated by this utility model the most separately.

Additionally, combination in any can also be carried out between various different embodiment of the present utility model, only Wanting it without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (12)

1. a heat pump type air conditioning system, it is characterized in that, including compressor (604), indoor condenser (601), indoor evaporator (602) and outdoor heat exchanger (605), the outlet of described compressor (604) connects with the entrance of described indoor condenser (601), the egress selection ground of described indoor condenser (601) connects via the entrance of the through-flow branch road of first throttle branch road or first with described outdoor heat exchanger (605), the egress selection ground of described outdoor heat exchanger (605) connects via the entrance of the second through-flow branch road with described compressor (604) or connects with the entrance of described indoor evaporator (602) via the second throttling branch road, the outlet of described indoor evaporator (602) connects with the entrance of described compressor (604).

Heat pump type air conditioning system the most according to claim 1, it is characterised in that be provided with the first switch valve (608) on described first through-flow branch road, described first throttle branch road is provided with the first expansion valve (607).

Heat pump type air conditioning system the most according to claim 1, it is characterized in that, described system also includes expanding switch valve (603), the entrance of this expansion switch valve (603) and the outlet of described indoor condenser (601), the outlet of this expansion switch valve (603) connects with the entrance of described outdoor heat exchanger (605), described first throttle branch road is the throttling runner of described expansion switch valve (603), and described first through-flow branch road is the through-flow runner of described expansion switch valve (603).

Heat pump type air conditioning system the most according to claim 1, it is characterised in that be provided with second switch valve (610) on described second through-flow branch road, described second throttling branch road is provided with the second expansion valve (609).

Heat pump type air conditioning system the most according to claim 1, it is characterised in that the outlet of described indoor evaporator (602) connects via the entrance of check valve (615) with described compressor (604).

Heat pump type air conditioning system the most according to claim 1, it is characterized in that, described heat pump type air conditioning system is applied to electric automobile, being additionally provided with plate type heat exchanger (612) on described second through-flow branch road, this plate type heat exchanger (612) is simultaneously located in the electromotor cooling system of described electric automobile.

Heat pump type air conditioning system the most according to claim 6, it is characterized in that, it is provided with second switch valve (610) on described second through-flow branch road, the refrigerant inlet (612a) of described plate type heat exchanger (612) and the outlet of described outdoor heat exchanger (605), the refrigerant outlet (612b) of described plate type heat exchanger (612) connects with the entrance of described second switch valve (610).

Heat pump type air conditioning system the most according to claim 6, it is characterised in that described electromotor cooling system includes connecting with described plate type heat exchanger (612) to form the motor in loop, motor radiator (613) and water pump (614).

Heat pump type air conditioning system the most according to claim 1, it is characterized in that, described system also includes gas-liquid separator (611), the outlet of described indoor evaporator (602) connects with the entrance of described gas-liquid separator (611), the outlet of described outdoor heat exchanger (605) connects with the entrance of described gas-liquid separator (611) via described second through-flow branch road, and the outlet of described gas-liquid separator (611) connects with the entrance of described compressor (604).

Heat pump type air conditioning system the most according to claim 1, it is characterised in that described system also includes ptc heater (619), this ptc heater (619) flows through the wind of described indoor condenser (601) for heating.

11. heat pump type air conditioning systems according to claim 10, it is characterised in that described ptc heater (619) is arranged on windward side or the leeward side of described indoor condenser (601).

12. 1 kinds of electric automobiles, it is characterised in that include according to the heat pump type air conditioning system described in claim 1-11.