CN107356021B - Heat pump air conditioning system and electric car - Google Patents
Heat pump air conditioning system and electric car Download PDFInfo
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- CN107356021B CN107356021B CN201610308237.5A CN201610308237A CN107356021B CN 107356021 B CN107356021 B CN 107356021B CN 201610308237 A CN201610308237 A CN 201610308237A CN 107356021 B CN107356021 B CN 107356021B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of heat pump air conditioning system and electric cars, the system includes compressor, indoor condenser, indoor evaporator and outdoor heat exchanger, the outlet of compressor is connected to the entrance of indoor condenser, it is connected to via first throttle branch or the first through-flow branch with the entrance of outdoor heat exchanger to the egress selection of indoor condenser, it is connected to via the second through-flow branch with the entrance of compressor to the egress selection of outdoor heat exchanger or is connected to via the second throttling branch with the entrance of indoor evaporator, the outlet of indoor evaporator is connected to the entrance of compressor, the outlet of indoor condenser is connected to via the third throttling branch of selective on or off with the entrance of compressor, the outlet of outdoor heat exchanger is connected to via the 4th throttling branch of selective on or off with the entrance of compressor.Heating efficiency is improved thus, it is possible to reach, meets defrosting requirement and other effects.
Description
Technical field
The present invention relates to the field of air conditioning of electric car, and in particular, to a kind of heat pump air conditioning system and electric car.
Background technique
Electric car does not have orthodox car to be used to the engine exhaust heat of heating, can not provide heating reservoir.Therefore, electronic vapour
The air-conditioning system of vehicle itself must have the function of heating, that is, use heat pump type air conditioner system and/or electric heating heat supply.
The application for a patent for invention of Publication No. CN105128622A discloses a kind of electric automobile heat-pump air-conditioning system.Now
Car opens time of outer circulation and few under most cities road conditions, opens the ratio that load brought by outer circulation accounts for vehicle
Example is also little, and main thermic load still passes through glass transition and personnel for automobile, so pre- from carrying out to fresh air merely
It is cold or preheating come reach improve comfort effect be not obvious, and worst hot case (environment temperature close to 50 DEG C or with
On), worst cold case (environment temperature be lower than -10 DEG C) using even more an utterly inadequate amount is pre-chilled or preheated to fresh air, severe
Refrigeration, heating effect are all difficult the effect having had in environment.
Summary of the invention
The object of the present invention is to provide a kind of heat pump air conditioning system and electric cars, to solve without engine exhaust heat cyclic system
The pure electric vehicle or hybrid electric vehicle of system using electric-only mode automobile heat pump air-conditioning system freeze in harsh environment, heating
The bad problem of effect.
To achieve the goals above, according to the first aspect of the invention, a kind of heat pump air conditioning system, including compression are provided
Machine, indoor condenser, indoor evaporator and outdoor heat exchanger, the outlet of the compressor and the entrance of the indoor condenser connect
It is logical, the egress selection of the interior condenser via first throttle branch or the first through-flow branch and the outdoor heat exchanger
Entrance connection, be connected to via the second through-flow branch with the entrance of the compressor to the egress selection of the outdoor heat exchanger
Or it is connected to via the second throttling branch with the entrance of the indoor evaporator, the outlet of the indoor evaporator and the compressor
Entrance connection, the outlet of the interior condenser is also via the third throttling branch and compression of selective on or off
The entrance of machine is connected to, and the outlet of the outdoor heat exchanger is also via the 4th throttling branch of selective on or off and the pressure
The entrance of contracting machine is connected to.
Optionally, the third throttling branch road is in series with first switch valve and first throttle element, the 4th throttling
Branch road is in series with second switch valve and the second restricting element.
Optionally, the first throttle element is capillary or expansion valve, and second restricting element is capillary or swollen
Swollen valve.
Optionally, the described first through-flow branch road is provided with third switch valve, and the first throttle branch road is provided with the
One expansion valve.
Optionally, the system also includes expansion switch valve, the entrance of the expansion switch valve and the indoor condensers
The outlet of outlet, the expansion switch valve is connected to the entrance of the outdoor heat exchanger, and the first throttle branch is described
The throttling runner of switch valve is expanded, the first through-flow branch is the through-flow runner of the expansion switch valve.
Optionally, the described second through-flow branch road is provided with the 4th switch valve, and the second throttling branch road is provided with the
Two expansion valves.
Optionally, the outlet of the indoor evaporator is connected to via check valve with the entrance of the compressor.
Optionally, the heat pump air conditioning system is applied to electric car, and the second through-flow branch road is additionally provided with board-like
Heat exchanger, the plate heat exchanger are arranged in the electromotor cooling system of the electric car simultaneously.
Optionally, the described second through-flow branch road is provided with the 4th switch valve, the refrigerant inlet of the plate heat exchanger
With the outlet of the outdoor heat exchanger, the entrance of the refrigerant outlet of the plate heat exchanger and the 4th switch valve connects
It is logical.
Optionally, the electromotor cooling system includes motor, the motor connected with the plate heat exchanger to be formed into a loop
Radiator and water pump.
Optionally, the system also includes gas-liquid separator, the outlet of the indoor evaporator and the gas-liquid separators
Entrance connection, the outlet of the outdoor heat exchanger connects via the entrance of the described second through-flow branch and the gas-liquid separator
Logical, the outlet of the gas-liquid separator is connected to the entrance of the compressor.
Optionally, the system also includes ptc heater, which flows through the indoor condenser for heating
Wind.
Optionally, the windward side or leeward side of the indoor condenser is arranged in the ptc heater.
According to the second aspect of the invention, a kind of electric car is provided, including described in the first aspect of the present invention offer
Heat pump air conditioning system.
Electric automobile heat-pump air-conditioning system provided by the invention, can be real in the case where not changing refrigerant circulation direction
The control of the processes such as existing automotive air-conditioning system refrigeration and heating.In addition, a plurality of throttling branch is added in systems system is existed
There is good refrigeration effect under high temperature, there is good heating effect at low temperature, while there is good defrosting effect.In
During outdoor heat exchanger defrosting, it is still able to satisfy interior heating demand.Further, since heat pump air conditioning system of the invention only with
One outdoor heat exchanger, therefore the windage of front-end module can be reduced, solve the pure of no engine exhaust heat circulatory system
Electric vehicle or hybrid electric vehicle using electric-only mode automobile heat pump air-conditioning system heating efficiency it is low, be unable to satisfy defrosting-defogging
The problems such as laws and regulations requirement, complicated installation, reaching reduces energy consumption, simplied system structure, the effect for facilitating pipeline to arrange.The present invention mentions
The heat pump air conditioning system of confession has the characteristics that structure is simple, therefore is easy to produce in batches.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of the heat pump air conditioning system of embodiment according to the present invention；
Fig. 2 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 3 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 4 a is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 4 b is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 5 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 6 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 7 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 8 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 9 is the overlooking structure diagram for the expansion switch valve that the preferred embodiment for the present invention provides；
Figure 10 is the schematic diagram of the section structure crossed by Fig. 9 middle line AB-AB, wherein the first valve port and the second valve port are equal
It is in the open state；
Figure 11 is the positive structure diagram along a visual angle for the expansion switch valve that the preferred embodiment for the present invention provides；
Figure 12 is the schematic diagram of the section structure crossed by Fig. 9 middle line AB-AB, wherein the first valve port is in the open state,
Second valve port is in closed state；
Figure 13 is the schematic diagram of the section structure crossed by Fig. 9 middle line AB-AB, wherein the first valve port is in closed state,
Second valve port is in the open state；
Figure 14 is that the facing structure along another visual angle for the expansion switch valve that the preferred embodiment for the present invention provides is illustrated
Figure；
Figure 15 is the schematic diagram of the section structure crossed by Figure 14 middle line AC-AC, wherein the first valve port is in open shape
State, the second valve port are in closed state；
Figure 16 is the first schematic diagram of internal structure of the expansion switch valve that the preferred embodiment for the present invention provides, wherein the
One valve port and the second valve port are in opening state；
Figure 17 is the partial enlarged view in the portion A in Figure 16；
Figure 18 is the second schematic diagram of internal structure of the expansion switch valve that the preferred embodiment for the present invention provides, wherein the
One valve port is in the open state, and the second valve port is in close state；
Figure 19 is the third schematic diagram of internal structure for the expansion switch valve that the preferred embodiment for the present invention provides, wherein the
One valve port is in close state, and the second valve port is in opening state.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " is usually phase
For the page of attached drawing, " upstream, downstream " is that e.g., for the flow direction of refrigerant, have relative to medium
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 addition, in the present invention, electric car may include pure electric automobile, hybrid vehicle, fuel cell car.
Fig. 1 is a kind of structural schematic diagram of the heat pump air conditioning system of embodiment according to the present invention.As shown in Figure 1, should
System may include: HVAC (heating and ventilation and air-conditioning, Heating Ventilation and Air Conditioning) total
At 600 and air door mechanism (not shown), wherein air door mechanism can be used for leading to indoor evaporator 602 and indoor condensation
The air duct of device 601.In addition, further including compressor 604 and outdoor heat exchanger 605 in system.Wherein, HVAC assembly 600 can wrap
Include indoor condenser 601 and indoor evaporator 602.As shown in Figure 1, the entrance of the outlet of compressor 604 and indoor condenser 601
Connection, the egress selection of indoor condenser 601 via first throttle branch or the first through-flow branch and outdoor heat exchanger 605
Entrance connection, the egress selection of outdoor heat exchanger 605 via second throttling branch and indoor evaporator 602 entrance connect
Lead to or is connected to via the second through-flow branch with the entrance of compressor 604, the outlet of indoor evaporator 602 and entering for compressor 604
Mouth connection.The outlet of indoor condenser 601 is also via the third throttling branch of selective on or off and entering for compressor 604
Mouth connection, for third throttling branch for being connected in low temperature heating, making automobile at low temperature has good heating effect；Room
The outlet of external heat exchanger 605 also connects via the entrance of the 4th throttling branch of selective on or off and the compressor 604
Logical, for the 4th throttling branch for being connected in high-temperature refrigeration, making automobile at high temperature has good refrigeration effect.
Specifically, as shown in Figure 1, third throttling branch road can be in series with first switch valve 620 and first throttle element
621, preferably, the upstream of first throttle element 621 is arranged in first switch valve 620, so that system quick response；Section four,
Stream branch road can be in series with second switch valve 622 and the second restricting element 623, preferably, the setting of second switch valve 622 exists
The upstream of second restricting element 623, so that system quick response.Wherein, first switch valve 620 and second switch valve 622 are used for
The on or off of respective branch is controlled, first throttle element 621 and the second restricting element 623 are used to control the section of respective branch
Flow function.
Further, first throttle element 621 can be capillary or expansion valve, and the second restricting element 623 can be hair
Tubule or expansion valve are here not specifically limited the form of first throttle element 621 and the second restricting element 623, as long as can
To play throttling action, that is, play cooling and/or antihypertensive effect.For example, in fig.4, first throttle element 621 and
Two restricting elements 623 can be respectively expansion valve, and in fig. 4b, first throttle element 621 and the second restricting element 623 can divide
It Wei not capillary.
In the present invention, the outlet of indoor condenser 601 or entering via first throttle branch and outdoor heat exchanger 605
Mouth is connected to or is connected to via the first through-flow branch with the entrance of outdoor heat exchanger 605.This can be realized using various ways
Kind mode of communicating.For example, in one embodiment, as shown in Figure 1, the heat pump air conditioning system may include third switch valve
608 and first expansion valve 607, wherein third switch valve 608 is arranged on the first through-flow branch road, and the setting of the first expansion valve 607 exists
First throttle branch road.Specifically, as shown in Figure 1, the outlet of indoor condenser 601 is changed via third switch valve 608 with outdoor
The entrance of hot device 605 is connected to form the first through-flow branch, and the outlet of indoor condenser 601 is via the first expansion valve 607 and room
The entrance of external heat exchanger 605 is connected to form first throttle branch.When under system is in refrigeration mode, third switch valve 608
Conducting, the first expansion valve 607 are closed, and the outlet of indoor condenser 601 enters via the first through-flow branch and outdoor heat exchanger 605
Mouth connection.When system is under heating or heating mode, the first expansion valve 607 conducting, third switch valve 608 is closed, indoor
The outlet of condenser 601 is connected to via first throttle branch with the entrance of outdoor heat exchanger 605.
Embodiment alternatively, as shown in Fig. 2, heat pump air conditioning system can also include expansion switch valve
603, the outlet of the entrance of the expansion switch valve 603 and indoor condenser 601, the outlet and room of the expansion switch valve 603
The entrance of external heat exchanger 605 is connected to, wherein first throttle branch is the throttling runner for expanding switch valve 603, the first through-flow branch
For the through-flow runner for expanding switch valve 603.
In the present invention, expansion switch valve is that have the function of expansion valve (also referred to as electric expansion valve function) simultaneously and open
The valve for closing valve function (also referred to as solenoid valve function) can be regarded as being the integrated of switch valve and expansion valve.It is expanding
The inside of switch valve is formed with through-flow runner and throttling runner, when expansion switch valve as switch valve in use, it internal leads to
Runner conducting is flowed, forms through-flow branch at this time；When expansion switch valve as expansion valve in use, its inside throttling runner lead
It is logical, throttling branch is formed at this time.
In order to facilitate pipeline laying, space hold is saved, it is preferable that use in heat pump air conditioning system provided by the invention
Expand switch valve 603, that is, embodiment shown in Fig. 2.
It is similar with the implementation of the first through-flow branch and first throttle branch in an above-mentioned embodiment, such as
Shown in Fig. 1, the second through-flow branch road is provided with the 4th switch valve 610, and the second throttling branch road is provided with the second expansion valve 609.
Specifically, the outlet of outdoor heat exchanger 605 is connected to via the 4th switch valve 610 with the entrance of compressor 604 logical to form second
Branch is flowed, the outlet of outdoor heat exchanger 605 is connected to form the with the entrance of indoor evaporator 602 via the second expansion valve 609
Two throttling branches.When under system is in refrigeration mode, the second expansion valve 609 conducting, the 4th switch valve 610 is closed, and outdoor is changed
The outlet of hot device 605 is connected to via the second throttling branch with the entrance of indoor evaporator 602.When system is in heating or heating mould
When under formula, the 4th switch valve 610 conducting, the second expansion valve 609 is closed, and the outlet of outdoor heat exchanger 605 is via the second through-flow branch
Road is connected to the entrance of compressor 604.
Fig. 3 shows the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention.Such as Fig. 3 institute
Show, which can also include gas-liquid separator 611, outlet and the gas-liquid separator 611 of indoor evaporator 602
The outlet of entrance connection, indoor condenser 601 is connected to via third throttling branch with the entrance of gas-liquid separator 611, and outdoor is changed
The outlet of hot device 605 is connected to via the second through-flow branch and the 4th throttling branch with the entrance of gas-liquid separator 611 respectively, gas-liquid
The outlet of separator 611 is connected to the entrance of compressor 604.In this way, refrigerant can first pass around the progress of gas-liquid separator 611
Gas-liquid separation, the gas isolated are flowed back into again in compressor 604, thus prevent liquid refrigerant enter compressor 604 and
Compressor 604 is damaged, so as to extend the service life of compressor 604, and improves the efficiency of entire heat pump air conditioning system.Room
The outlet of interior evaporator 602 is connected to by check valve 615 with the entrance of gas-liquid separator 611.Here, setting check valve 615 is
Refrigerant is back to indoor evaporator under low temperature heating mode and room temperature heating mode (described in detail below) in order to prevent
602, influence heating effect.
It will carry out heat pump air conditioning system that the present invention is described in detail provides by taking Fig. 3 to Fig. 6 as an example below in different Working moulds
Cyclic process and principle under formula, wherein arrow of the Fig. 3 into Fig. 6 is oriented to the flow direction of refrigerant.It should be understood that other
System circulation process and principle under embodiment (for example, Fig. 1 to embodiment shown in Fig. 2) are similar to Fig. 3 to Fig. 6
, it just no longer repeats one by one herein.
Mode one: high-temperature refrigeration mode.System in this mode when, whole system forms high-temperature refrigeration circulation
System.As shown in figure 3, firstly, gas of the compressor 604 through overcompression discharge high temperature and pressure, is connected with indoor condenser 601.
At this point, control wind without indoor condenser 601 by air door mechanism, due to calm process, condenser 601 indoors
It not will do it heat exchange inside, which only uses as runner, and the indoor outlet of condenser 601 is still high temperature at this time
The gas of high pressure.The indoor outlet of condenser 601 is connected with expansion switch valve 603, expands switch valve 603 at this time and plays switch valve work
With, only flowed through as runner, at this time expand switch valve 603 outlet still be high temperature and pressure gas.Expand switch valve 603 outlet with
Outdoor heat exchanger 605 is connected, and outdoor heat exchanger 605 and outdoor air exchange heat, and heat is dispersed into air, outdoor heat exchanger
605 outlets are the liquid of medium temperature high pressure.At this point, the 4th switch valve 610 is closed, the outlet of outdoor heat exchanger 605 and the second expansion valve
609 are connected, and the second expansion valve 609 plays throttling action as restricting element, and outlet is low temperature and low pressure liquid.Second expansion valve
609 apertures can give certain aperture according to actual needs, this aperture can be according to the outlet for being mounted on indoor evaporator 602
The pressure and temperature acquisition data of pressure-temperature sensor between the entrance of gas-liquid separator 611 calculate evaporator outlet
Refrigerant superheat degree is adjusted.The outlet of second expansion valve 609 is connected with the entrance of indoor evaporator 602, and low temperature and low pressure liquid exists
It is evaporated in indoor evaporator 602, so that the outlet of indoor evaporator 602 is the gas of low-temp low-pressure, but due to high temperature ring
The influence in border, indoor evaporator outlet generate the gaseous refrigerant for overheating high temperature.At the same time, third throttling branch cut-off,
4th throttling branch conducting, the liquid for the medium temperature high pressure that outdoor heat exchanger 605 exports are made by the throttling of the second restricting element 623
With the gas-liquid binary states refrigerant for becoming low-temp low-pressure, the gaseous refrigerant of the gas-liquid binary states refrigerant and above-mentioned overheat high temperature
Interflow carries out heat exchange, so as to reduce by 604 suction temperature of compressor, delivery temperature and power consumption under high temperature environment.It is indoor
The outlet of evaporator 602 is connected with the entrance of check valve 615, the outlet and the entrance phase of gas-liquid separator 611 of check valve 615
Even, the liquid not being evaporated being separated by gas-liquid separator 611, the gas of last low-temp low-pressure returns in compressor 604, by
This forms a circulation.The flow direction of 600 apoplexy of HVAC assembly flows only through indoor evaporator 602 at this time, and indoor condenser 601 is calm
By only being flowed through as refrigerant flow path.
Mode two: room temperature refrigeration mode.System in this mode when, whole system formed a room temperature refrigeration cycle
System.As shown in figures 4 a and 4b, in this mode, whole system is similar to the system under high-temperature refrigeration mode, and difference is,
In this mode, third throttling branch and the 4th throttling branch are off state.This is because at normal temperature, indoor evaporator
602 outlets can be the gas of low-temp low-pressure, will not generate the gaseous refrigerant for overheating high temperature, without the 4th throttling
The throttling action of branch can reduce unnecessary energy waste in this way, and the working efficiency of system can be improved.
Mode three: low temperature heating mode.System in this mode when, whole system forms low temperature heating circulation
System.As shown in figure 5, firstly, compressor 604 through overcompression discharge high temperature and pressure gas, be connected with indoor condenser 601,
At this point, indoor condenser 601 has a wind process, the gas of high temperature and pressure is condensed in condenser 601 indoors, so that indoor cold
The outlet of condenser 601 is the liquid of medium temperature high pressure.The indoor outlet of condenser 601 is connected with expansion switch valve 603, at this time expansion switch
Valve 603 plays expansion valve, plays throttling action as restricting element, outlet is the liquid of low-temp low-pressure.Wherein, it expands
The aperture of switch valve 603 can give certain aperture according to actual needs, this aperture can be according to being mounted on compressor 604
The number of the temperature acquisition data (i.e. compressor exhaust temperature) of the pressure-temperature sensor in exit is adjusted.Expansion switch
The outlet of valve 603 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 outlets are the gas of low-temp low-pressure.At this point, the 4th switch valve 610 open, the second expansion valve 609 close, refrigerant without
Indoor evaporator 602 flows directly into gas-liquid separator 611.But due to the influence of low temperature environment, flow through the 4th switch valve 610
It is the gaseous refrigerant that low temperature was subcooled.At the same time, the 4th throttling branch cut-off, third throttling branch conducting are indoor cold
The liquid of the medium temperature high pressure of the outlet of condenser 601 becomes the gas-liquid of medium temperature low pressure by the throttling action of first throttle element 621
The gaseous refrigerant interflow of binary states refrigerant, the gas-liquid binary states refrigerant and above-mentioned supercooling low temperature carries out heat exchange, thus
The inspiratory capacity, suction temperature, delivery temperature of compressor 604 can be improved at low ambient temperatures to increase indoor condenser 601
Heat exchange amount, heating comfort, system energy efficiency and compressor efficiency can be improved.Behind interflow, the liquid not being evaporated passes through gas
Liquid/gas separator 611 separates, and the gas of last low-temp low-pressure returns in compressor 604, and a circulation is consequently formed.
Mode four: room temperature heating mode.System in this mode when, whole system forms room temperature heating circulation
System.As shown in fig. 6, in this mode, whole system is similar to the system under low temperature heating mode, and difference is, in the mould
Under formula, third throttling branch and the 4th throttling branch are off state.This is because at normal temperature, refrigerant flows through the 4th and opens
The gaseous refrigerant that low temperature was subcooled will not be generated after closing valve 610, without the throttling action of third throttling branch, in this way
It can reduce unnecessary energy waste, and the working efficiency of system can be improved.
Mode five: outdoor heat exchanger defrosting mode.As shown in figures 4 a and 4b, firstly, compressor 604 is discharged through overcompression
The gas of high temperature and pressure is connected with indoor condenser 601.At this point, indoor condenser 601 is only flowed through as runner, indoor condensation
The outlet of device 601 is still the gas of high temperature and pressure.The indoor outlet of condenser 601 is connected with expansion switch valve 603, at this time expansion switch
Valve 603 plays switch valve action, only flows through as runner, and expanding the outlet of switch valve 603 at this time still is the gas of high temperature and pressure.Expansion
The outlet of switch valve 603 is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 and outdoor air exchange heat, and heat is dispersed into air
In, the outlet of outdoor heat exchanger 605 is the liquid of medium temperature high pressure.At this point, the 4th switch valve 610 is closed, the second expansion valve 609 is beaten
It opens, the second expansion valve 609 plays throttling action as restricting element, and outlet is low temperature and low pressure liquid.Second expansion valve 609 is opened
Degree can give certain aperture according to actual needs, this aperture can be according to the outlet and gas for being mounted on indoor evaporator 602
The pressure and temperature acquisition data of pressure-temperature sensor between the entrance of liquid/gas separator 611 calculate evaporator outlet refrigeration
The agent degree of superheat is adjusted.The outlet of second expansion valve 609 is connected with indoor evaporator 602, and the outlet of indoor evaporator 602 is that low temperature is low
The gas of pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is divided by gas-liquid separator 611
From the gas of last low-temp low-pressure returns in compressor 604, a circulation is consequently formed, HVAC assembly can not blow at this time.
In conclusion heat pump air conditioning system provided by the invention, in the case where not changing refrigerant circulation direction
Realize the control of the processes such as automotive air-conditioning system refrigeration and heating.In addition, a plurality of throttling branch is added in systems makes system
There is good refrigeration effect at high temperature, there is good heating effect at low temperature, while there is good defrosting effect.
Further, since heat pump air conditioning system of the invention is only with an outdoor heat exchanger, therefore front-end module can be reduced
Windage, the pure electric vehicle or hybrid electric vehicle that solve no engine exhaust heat circulatory system use the automobile heat pump of electric-only mode
Air-conditioning system heating efficiency is low, be unable to satisfy defrosting-defogging laws and regulations requirement, installs the problems such as complicated, and reaching reduces energy consumption, simplification
System structure, the effect for facilitating pipeline to arrange.Heat pump air conditioning system provided by the invention has the characteristics that structure is simple, therefore easily
In batch production.
Under low temperature heating mode and room temperature heating mode, in order to improve heating ability, it is preferable that as shown in fig. 7,
Plate heat exchanger 612 is provided in entire heat pump air conditioning system, which is also disposed in electric car simultaneously
Electromotor cooling system in.In this way, the waste heat that can use electromotor cooling system gives air-conditioning system refrigerant heat, so as to mention
The suction temperature and inspiratory capacity of high compressor 604.The upstream of the 4th switch valve 610 can be arbitrarily arranged in plate heat exchanger 612
Or downstream.In the embodiment shown in Fig. 7, the upstream of the 4th switch valve 610 is arranged in plate heat exchanger 612, that is, board-like to change
The refrigerant inlet 612a of hot device 612 and the outlet of outdoor heat exchanger 605, the refrigerant outlet of plate heat exchanger 612
612b is connected to the entrance of the 4th switch valve 610.(not shown) in another embodiment, the setting of plate heat exchanger 612 exist
The downstream of 4th switch valve 610, that is, the outlet of the refrigerant inlet 612a and the 4th switch valve 610 of plate heat exchanger 612 connect
Logical, the refrigerant outlet 612b of plate heat exchanger 612 is connected to the entrance of gas-liquid separator 611.
At the same time, plate heat exchanger 612 is arranged in electromotor cooling system simultaneously.As shown in fig. 7, electromotor cooling system
It may include the motor, motor radiator 613 and water pump 614 connected with plate heat exchanger 612 to be formed into a loop.In this way, refrigeration
Agent can carry out heat exchange by the coolant liquid in plate heat exchanger 612 and electromotor cooling system.Refrigerant is by the 4th switch
After valve 610, return in compressor 604.
In heat pump air conditioning system provided by the invention, the various refrigerants such as R134a, R410a, R32, R290 can be used,
It is preferential to select high temperature refrigerant.
Fig. 8 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention.As shown in figure 8,
HVAC assembly 600 can also include ptc heater 619, the ptc heater 619 be used for flow through the wind of indoor condenser 601 into
Row heating.
In the present invention, ptc heater 619 can be high pressure PTC (being driven by vehicle high-tension battery), voltage range:
200V-900V.Alternatively, ptc heater 619 or low pressure PTC (driving of 12V or 24V battery), voltage range: 9V-
32V.In addition, this ptc heater 619 can be by several or several pieces of PTC ceramics piece modules and radiating fin form one it is complete
Whole core, or the strip with radiating fin or block-like PTC ceramics piece module.
In the present invention, which can arrange the windward side or leeward side of condenser 601 indoors.And
And in order to improve the heating effect to the wind for flowing through indoor condenser 601, which can be with indoor condenser
601 are arranged in parallel.In other embodiments, which can also be arranged in blowing for the cabinet of HVAC assembly 600
At foot air port and defrosting outlet, it can also be arranged at the air port of defrosting duct.
It is cold with interior if ptc heater 619 to be arranged in the windward side or leeward side of cabinet interior room inner condenser 601
Condenser 601 be arranged in parallel, can the grooving on cabinet shell, ptc heater 619, which is inserted perpendicularly into, puts cabinet into, can also be indoors
Welding support on 601 side plate of condenser, ptc heater 619 are fixed by screws on the bracket of indoor condenser 601.If
Ptc heater 619 is arranged in the blowing at foot air port and defrosting outlet of cabinet, or is arranged at the air port of defrosting duct, can be led to
Screw is crossed to be directly anchored at the air port of box air outlet and wind passage mouth.
By this embodiment, when outside temperature is too low, and the heating capacity of heat pump low temperature heating is unsatisfactory for interior demand,
619 auxiliary heating heating of ptc heater can be run, it is possible thereby to heating capacity is small when eliminating heat pump air conditioning system low-temperature heating, it is whole
The defects of vehicle defrosting-defogging is slow, and heating effect is bad.
As described above, in the present invention, expansion switch valve is the valve simultaneously with expansion valve and switch valve function,
It can be regarded as being the integrated of switch valve and expansion valve.It will be provided below a kind of example embodiment party for expanding switch valve
Formula.
As shown in figure 9, expansion switch valve mentioned above may include valve body 500, wherein be formed on the valve body 500
Import 501, outlet 502 and connection are in import 501 and export the inner flow passage between 502, are equipped with first on inner flow passage
Spool 503 and the second spool 504, the first spool 503 make import 501 directly be connected to or disconnect connection, the second valve with outlet 502
Core 504 makes import 501 be connected to or disconnect connection by restriction 505 with outlet 502.
Wherein, " directly connection " that the first spool is realized refers to that the coolant that enters from the import 501 of valve body 500 can be with
It crosses the first spool and passes through the outlet 502 that inner flow passage insusceptibly flows directly to valve body 500, what the first spool was realized
" disconnecting connection " refers to that the coolant entered from the import 501 of valve body 500 can not cross the first spool and cannot pass through inside stream
Road flows to the outlet 502 of valve body 500." being connected to by restriction " that second spool is realized refers to the import 501 from valve body 500
The coolant of entrance can cross the second spool and flow to the outlet 502 of valve body 500 after passing through the throttling of restriction, and the second valve
" disconnect connection " that core is realized refer to the coolant entered from the import 501 of valve body 500 can not cross the second spool and cannot
The outlet 502 of valve body 500 is flowed to by restriction 505.
In this way, expansion switch valve of the invention can make from import by the control to the first spool and the second spool
501 coolants entered at least realize three kinds of states.That is, 1) off state；2) the direct connected state of the first spool 503 is crossed
State；And 3) cross the throttling mode of communicating of the second spool 504.
Wherein, after the liquid refrigerant of high temperature and pressure throttles using restriction 505, the mist of low-temp low-pressure can be become
Hydraulic refrigerant, can create conditions for the evaporation of refrigerant, i.e. the cross-sectional area of restriction 505 cross that is less than outlet 504
Sectional area, and by the second spool of control, the opening size of restriction 505 is adjustable, flows through restriction 505 with control
Flow prevents the refrigeration because of the very few generation of refrigerant insufficient, and prevents from making compressor generate liquid hammer because refrigerant is excessive
Phenomenon.That is, the cooperation of the second spool 504 and valve body 500 can to expand and close valve and have the function of expansion valve.
In this way, by installing the first spool 503 and the second spool 504 on the inner flow passage of same valve body 500, to realize
The control of the on-off of import 501 and outlet 502 and/or throttling control function, structure is simple, is readily produced and installs, and works as this hair
When the expansion switch valve of bright offer is applied to heat pump system, it is possible to reduce the refrigerant charge of entire heat pump system, reduce at
This, simplifies piping connection, the more conducively oil return of heat pump system.
As a kind of illustrative inner mounting structure of valve body 500, as shown in Fig. 9 to Figure 14, valve body 500 includes being formed
The valve seat 510 of inner flow passage and the first valve casing 511 and the second valve casing 512 being mounted on the valve seat 510, in the first valve casing 511
The first electromagnetic drive part 521 for driving the first spool 503 is installed, is equipped in the second valve casing 512 for driving second
Second electromagnetic drive part 522 of spool 504, the first spool 503 extend to the inner flow passage in valve seat 510 from the first valve casing 511,
Second spool 504 extends to the inner flow passage in valve seat 510 from the second valve casing 512.
Wherein, by the first electromagnetic drive part 521, e.g., electromagnetic coil, the control of power on/off can easily control
The position of first spool 503, and then control import 501 and be directly connected to or disconnect connection with outlet 502；By being driven to the second electromagnetism
Dynamic portion 522, e.g., electromagnetic coil, the control of power on/off can easily control the position of the second spool 504, thus control into
Whether mouth 501 and outlet 502 are connected to restriction 505.In other words, shared import 501 and outlet have been installed in parallel in valve body 500
502 electric expansion valve and solenoid valve, it is thus possible to realize the on-off of expansion switch valve and/or the automation control of throttling, and
Simplify pipeline trend.
For the spatial position for making full use of all directions for expanding switch valve, expansion switch valve and different piping connections are avoided
Interference is generated, valve seat 510 is formed as polyhedral structure, the first valve casing 511,502 difference of the second valve casing 512, import 501 and outlet
It is arranged on the different surfaces of the polyhedral structure, wherein the installation direction of the first valve casing 511 and the second valve casing 512 mutually hangs down
Directly, the opening direction of import 501 and outlet 502 is mutually perpendicular to.In this way, import, export pipeline can be connected to polyhedron knot
On the different surfaces of structure, it can be avoided that pipeline arrangement is in disorder, the problem of tangling.
As expansion switch valve a kind of typical internal structure, as shown in Fig. 9 to Figure 12, inner flow passage include respectively with
The first runner 506 and second flow channel 507 that import 501 is connected to, are formed on first runner 506 and the first spool 503 cooperation
First valve port 516, restriction 505 are formed in second flow channel 507 to be formed as the second valve port cooperated with the second spool 504
517, first runner 506 and second flow channel 507 are intersected in the downstream of the second valve port 517 and are connected to outlet 502.
That is, realizing closing or opening to the first valve port 516 by the position for converting the first spool 503, and then control
It is connected to the truncation or conducting of the first runner 506 of import 501 and outlet 502, so as to realize above-described solenoid valve
Connection or the function of disconnecting connection.Similarly, cutting to the second valve port 517 is realized by converting the position of the second spool 504
Disconnected or conducting, so as to realize the throttling function of electric expansion valve.
First runner 506 and second flow channel 507 can be respectively communicated with import 501 and outlet with any appropriate arrangement
502, for the whole occupied space for reducing valve body 500, as shown in figure 12, second flow channel 507 opens up in the same direction with outlet 502, and first
Runner 506 be formed as with the orthogonal first through hole 526 of second flow channel 507, import 501 is by being provided with second flow channel 507
The second through-hole 527 on side wall is connected to second flow channel 507, and first through hole 526 and the second through-hole 527 connect respectively with import 501
It is logical.Wherein, first through hole 526 can be arranged or be arranged in parallel in spatial vertical with the second through-hole 527, and the present invention does not make this
Limitation, all belong to the scope of protection of the present invention among.
For the whole occupied space for being further simplified valve body 500, as shown in Figure 16 to Figure 19, import 501 and 502 phases of outlet
Mutually vertically it is provided on valve body 500.In this way, as shown in Figure 16 to Figure 18, the axis of import 501 exports 502 axis (i.e.
The axis of second flow channel 507) and the axis of first runner 506 it is vertically arranged two-by-two in space, to prevent the first spool
503 and second spool 504 mobile generation interference, and can maximumlly utilize valve body 500 inner space.
It as shown in Figure 12 and Figure 13, is the closing and opening that are easy to implement the first valve port 516, the first spool 503 is along moving
Direction is with the coaxial laying of the first valve port 516 selectively to block or be detached from the first valve port 516.
For the closing and opening for being easy to implement the second valve port 517, the second spool 504 is along moving direction and the second valve port 517
It is coaxial to lay selectively to block or be detached from the second valve port 517.
Wherein, as shown in figure 15, reliability first runner 506 blocked for the first spool 503 of guarantee, the first spool
503 may include the first valve rod 513 and the first plug 523 for being connected to 513 end of the first valve rod, which uses
In on the end face for being sealed against the first valve port 516 to block first runner 506.
For the opening size convenient for adjusting the restriction 505 of expansion switch valve, as shown in Figure 12 and Figure 13, the second spool
504 include the second valve rod 514, and the end of second valve rod 514 is formed as taper header structure, and the second valve port 517 is formed as and is somebody's turn to do
The taper pore structure that taper header structure matches.
Wherein, 505 aperture of restriction for expanding switch valve can be adjusted by moving up and down for second spool 504, and
Moving up and down for second spool 504 can be adjusted by the second electromagnetic drive part 522.If expanding the restriction 505 of switch valve
Aperture be zero, as shown in figure 12, the second spool 504 is in extreme lower position, and the second spool 504 blocks the second valve port 517, refrigeration
Agent cannot pass through restriction 505, i.e. the second valve port 517 completely；If expanding switch valve restriction 505 has aperture, such as Figure 13 institute
Show that there is gap between the taper header structure and restriction 505 of the end of the second spool 504, flow to out again after refrigerant throttling
Mouth 502.It, can be by controlling the second electromagnetic drive part 522, so that second when if desired increasing the throttle opening of expansion switch valve
Spool 504 moves up, so that taper header structure is far from restriction 505, to realize becoming larger for 505 aperture of restriction；Phase
Instead, it when needing to reduce the aperture of restriction 505 of expansion switch valve, can drive mobile under 504 phase of the second spool.
In use, when only needing the solenoid valve function using expansion switch valve, as shown in Figure 12, Figure 15 and Figure 18, the
One spool 503 is detached from the first valve port 516, and the first valve port 516 is in the open state, and the second spool 504 is in extreme lower position, and second
Spool 504 blocks throttle orifice 505, and the refrigerant for flowing into inner flow passage from import 501 cannot pass through throttle orifice completely
505, the first valve port 516 can only be passed sequentially through, first through hole 526 flows into outlet 502.When solenoid valve power-off, the first spool
503 are moved to the left, and the first plug 523 and the separation of the first valve port 516, refrigerant can pass through from first through hole 526；Work as electromagnetism
Valve is powered, and the first spool 503 moves right, and the first plug 523 and the fitting of the first valve port 516, refrigerant can not be from first through hole
Pass through in 526.
It should be noted that the dotted line with the arrow in Figure 12 and Figure 18 represents refrigerant when using solenoid valve function
Flow route and trend.
When only needing the electric expansion valve function using expansion switch valve, as shown in Figure 13 and Figure 19, the second valve port
517, i.e. restriction 505 is in the open state, and the first spool 503 blocks the first valve port 516, flows into inside stream from import 501
The refrigerant in road can not can only pass sequentially through the second through-hole 527, restriction 505 flows into outlet 502 by first through hole 526
In, and can move up and down the second spool 504 to adjust the size of the aperture of restriction 505.
It should be noted that the dotted line with the arrow in Figure 13 and Figure 19, which represents refrigerant, is using electric expansion valve function
When flow route and trend.
When needing while using the solenoid valve function and electric expansion valve function of expansion switch valve, such as Figure 10, Tu16He
Shown in Figure 17, wherein dotted line with the arrow represents the glide path and trend of refrigerant, and the first spool 503 is detached from the first valve
Mouth 516, the first valve port 516 is in the open state, and restriction 505 is in the open state, and the refrigerant for flowing into inner flow passage can
To export 502 along first runner 506 and the flow direction of second flow channel 507 respectively, to have the function of solenoid valve and electronic expansion simultaneously
Valve function.
It should be understood that one of example of the above embodiment as just expansion switch valve, and and do not have to
In the limitation present invention, other have the function of that the expansion switch valve of expansion valve and switch valve function is equally applicable to the present invention simultaneously.
The present invention also provides a kind of electric cars, including the above-mentioned heat pump air conditioning system provided according to the present invention.Wherein, should
Electric car may include pure electric automobile, hybrid vehicle, fuel cell car.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (14)
1. a kind of heat pump air conditioning system, which is characterized in that including compressor (604), indoor condenser (601), indoor evaporator
(602) it is connected to outdoor heat exchanger (605), the outlet of the compressor (604) with the entrance of the indoor condenser (601),
The egress selection of the interior condenser (601) via first throttle branch or the first through-flow branch and the outdoor heat exchange
The entrance of device (605) is connected to, the egress selection of the outdoor heat exchanger (605) via the second through-flow branch and the compression
The entrance of machine (604) is connected to or is connected to via the second throttling branch with the entrance of the indoor evaporator (602), the interior steaming
The outlet of hair device (602) is connected to the entrance of the compressor (604), and the outlet of the interior condenser (601) is also via choosing
The third throttling branch of selecting property on or off is connected to the entrance of the compressor (604), the outdoor heat exchanger (605)
Outlet is also connected to via the 4th throttling branch of selective on or off with the entrance of the compressor (604).
2. heat pump air conditioning system according to claim 1, which is characterized in that the third throttling branch road is in series with first
Switch valve (620) and first throttle element (621), the 4th throttling branch road are in series with second switch valve (622) and second
Restricting element (623).
3. heat pump air conditioning system according to claim 2, which is characterized in that the first throttle element (621) is capillary
Pipe or expansion valve, second restricting element (623) are capillary or expansion valve.
4. heat pump air conditioning system according to claim 1, which is characterized in that the first through-flow branch road is provided with third
Switch valve (608), the first throttle branch road are provided with the first expansion valve (607).
5. heat pump air conditioning system according to claim 1, which is characterized in that the system also includes expansion switch valves
(603), the outlet of the entrance of the expansion switch valve (603) and the indoor condenser (601), the expansion switch valve
(603) outlet is connected to the entrance of the outdoor heat exchanger (605), and the first throttle branch is the expansion switch valve
(603) throttling runner, the first through-flow branch are the through-flow runner of expansion switch valve (603).
6. heat pump air conditioning system according to claim 1, which is characterized in that the second through-flow branch road is provided with the 4th
Switch valve (610), the second throttling branch road are provided with the second expansion valve (609).
7. heat pump air conditioning system according to claim 1, which is characterized in that the outlet of the indoor evaporator (602) passes through
It is connected to by check valve (615) with the entrance of the compressor (604).
8. heat pump air conditioning system according to claim 1, which is characterized in that the heat pump air conditioning system is applied to electronic vapour
Vehicle, the second through-flow branch road are additionally provided with plate heat exchanger (612), which is arranged described simultaneously
In the electromotor cooling system of electric car.
9. heat pump air conditioning system according to claim 8, which is characterized in that the second through-flow branch road is provided with the 4th
Switch valve (610), the refrigerant inlet of the plate heat exchanger (612) and the outlet of the outdoor heat exchanger (605), institute
The refrigerant outlet for stating plate heat exchanger (612) is connected to the entrance of the 4th switch valve (610).
10. heat pump air conditioning system according to claim 8, which is characterized in that the electromotor cooling system include with it is described
The motor, motor radiator (613) and water pump (614) that plate heat exchanger (612) is connected to be formed into a loop.
11. heat pump air conditioning system according to claim 1, which is characterized in that the system also includes gas-liquid separators
(611), the outlet of the indoor evaporator (602) is connected to the entrance of the gas-liquid separator (611), the interior condenser
(601) outlet is connected to via third throttling branch with the entrance of the gas-liquid separator (611), the outdoor heat exchanger
(605) outlet is respectively via the described second through-flow branch and the 4th throttling branch and the gas-liquid separator (611)
Entrance connection, the outlet of the gas-liquid separator (611) is connected to the entrance of the compressor (604).
12. heat pump air conditioning system according to claim 1, which is characterized in that the system also includes ptc heaters
(619), which is used to heat the wind for flowing through the indoor condenser (601).
13. heat pump air conditioning system according to claim 12, which is characterized in that the ptc heater (619) is arranged in institute
State the windward side or leeward side of indoor condenser (601).
14. a kind of electric car, which is characterized in that including heat pump air conditioner system described according to claim 1 any one of -13
System.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308237.5A CN107356021B (en) | 2016-05-10 | 2016-05-10 | Heat pump air conditioning system and electric car |
| PCT/CN2017/082950 WO2017193859A1 (en) | 2016-05-10 | 2017-05-03 | Heat pump air conditioning system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308237.5A CN107356021B (en) | 2016-05-10 | 2016-05-10 | Heat pump air conditioning system and electric car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107356021A CN107356021A (en) | 2017-11-17 |
| CN107356021B true CN107356021B (en) | 2019-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610308237.5A Active CN107356021B (en) | 2016-05-10 | 2016-05-10 | Heat pump air conditioning system and electric car |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107356021B (en) |
| WO (1) | WO2017193859A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155439B (en) * | 2018-02-01 | 2024-04-26 | 湖南华强电气股份有限公司 | Air conditioner battery cooling single cooling system and control method |
| CN109373636B (en) * | 2018-11-09 | 2023-07-04 | 珠海格力电器股份有限公司 | System and method for preventing liquid impact |
| CN109455058B (en) * | 2018-11-09 | 2020-07-24 | 安徽江淮汽车集团股份有限公司 | Economical air conditioning system of electric automobile and control method |
| CN111156653B (en) * | 2019-12-16 | 2021-01-29 | 珠海格力电器股份有限公司 | Fault detection method for hot defrosting electromagnetic bypass valve, storage medium and air conditioner |
| CN111336711A (en) * | 2020-03-09 | 2020-06-26 | 珠海格力电器股份有限公司 | Heat pump system and corresponding defrosting control method thereof |
| CN111336712A (en) * | 2020-03-09 | 2020-06-26 | 珠海格力电器股份有限公司 | Heat pump system and corresponding defrosting control method thereof |
| CN112428770A (en) * | 2020-09-30 | 2021-03-02 | 三花控股集团有限公司 | Fluid control assembly and thermal management system |
| CN113710061A (en) * | 2021-08-23 | 2021-11-26 | 上海柯诺威新能源科技有限公司 | Cooling system |
| CN113490400A (en) * | 2021-08-23 | 2021-10-08 | 上海柯诺威新能源科技有限公司 | Cooling system |
| CN114001989B (en) * | 2021-10-22 | 2023-08-25 | 中汽研汽车检验中心（天津）有限公司 | Single vehicle air conditioner energy consumption prediction method and prediction device based on working condition recognition |
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|---|---|
| WO2017193859A1 (en) | 2017-11-16 |
| CN107356021A (en) | 2017-11-17 |
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