CN111114239B - Air conditioning system, vehicle and control method of air conditioning system - Google Patents
Air conditioning system, vehicle and control method of air conditioning system Download PDFInfo
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- CN111114239B CN111114239B CN201911423741.XA CN201911423741A CN111114239B CN 111114239 B CN111114239 B CN 111114239B CN 201911423741 A CN201911423741 A CN 201911423741A CN 111114239 B CN111114239 B CN 111114239B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 64
- 238000001816 cooling Methods 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 43
- 238000007791 dehumidification Methods 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 description 168
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B60H1/00007—Combined heating, ventilating, or cooling devices
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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
- B60H1/00321—Heat exchangers for air-conditioning devices
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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
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
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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
- B60H3/00—Other air-treating devices
- B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
- B60H3/024—Moistening ; Devices influencing humidity levels, i.e. humidity control for only dehumidifying the air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an air conditioning system, a vehicle and a control method of the air conditioning system, wherein the air conditioning system comprises a compressor, a first indoor heat exchanger, a second indoor heat exchanger, a first throttle valve and an outdoor heat exchanger, wherein the first end of the first indoor heat exchanger is connected with an exhaust port, the second end of the first indoor heat exchanger is selectively communicated with one of the first end of the second indoor heat exchanger and the first end of the first throttle valve, the second end of the second indoor heat exchanger is selectively communicated with one of an air return port and the first end of the first throttle valve, the first end of the outdoor heat exchanger is connected with the second end of the first throttle valve, and the second end of the outdoor heat exchanger is selectively communicated with one of the air return port and the first end of the second indoor heat exchanger. According to the air conditioning system, the higher heating quantity is realized in the heating mode, the heating performance of the air conditioning system is improved, and the requirement of a user on heating is better met.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to an air conditioning system, a vehicle and a control method of the air conditioning system.
Background
In the related art, an air conditioning system, such as an air conditioning system for a vehicle, has a low heating capacity in a heating condition, and cannot meet the use requirements of users.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the air conditioning system which has higher heating capacity in the heating mode and improves the heating performance of the air conditioning system.
The invention also provides a vehicle with the air conditioning system.
The invention also provides a control method of the air conditioning system.
An air conditioning system according to an embodiment of a first aspect of the present invention includes: a compressor having a return air port and an exhaust port; a first end of the first indoor heat exchanger is connected with the exhaust port; a second indoor heat exchanger; a first throttle valve, a second end of the first indoor heat exchanger selectively communicating with one of a first end of the second indoor heat exchanger and a first end of the first throttle valve, a second end of the second indoor heat exchanger selectively communicating with one of the return air port and the first end of the first throttle valve; an outdoor heat exchanger, a first end of the outdoor heat exchanger being connected to a second end of the first throttle valve, a second end of the outdoor heat exchanger being selectively in communication with one of the return air port and the first end of the second indoor heat exchanger; when the second end of the first indoor heat exchanger is communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger is communicated with the first end of the first throttling valve, and the second end of the outdoor heat exchanger is communicated with the air return opening; when the second end of the first indoor heat exchanger is communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger is communicated with the first end of the second indoor heat exchanger, and the second end of the second indoor heat exchanger is communicated with the air return port.
According to the air conditioning system, a cooling mode and a heating mode can be realized, and the first indoor heat exchanger and the second indoor heat exchanger can work in the heating mode, so that the air conditioning system has higher heating capacity in the heating mode, the heating performance of the air conditioning system is improved, and the heating requirement of a user can be better met.
According to some embodiments of the present invention, the second end of the first indoor heat exchanger is connected to a first control valve, the first control valve is a three-way valve having first to third ports, the first port is connected to the second end of the first indoor heat exchanger, the first port is selectively communicated with one of the second port and the third port, the second port is connected to the first end of the second indoor heat exchanger, and the third port is connected to the first end of the first throttle valve.
According to some embodiments of the invention, the second end of the second indoor heat exchanger is connected to a second control valve, the second control valve is a three-way valve, the second control valve has fourth to sixth ports, the fourth port is connected to the second end of the second indoor heat exchanger, the fourth port is selectively communicated with one of the fifth port and the sixth port, the fifth port is connected to the return port, and the sixth port is connected to the first end of the first throttle valve.
According to some embodiments of the present invention, the air conditioning system includes a third control valve and a second throttle valve, the third control valve is connected in series between the second end of the outdoor heat exchanger and the return air port, the third control valve is used for controlling on-off of the flow path, and the second throttle valve is connected in series between the second end of the outdoor heat exchanger and the first end of the second indoor heat exchanger.
According to some embodiments of the present invention, the air conditioning system includes a cooling flow path connected in parallel with the second indoor heat exchanger, and a cooler is connected in series to the cooling flow path.
Optionally, a third throttle is connected in series with the cooling flow path, the third throttle being connected on an upstream side of the cooler.
According to some embodiments of the present invention, the air conditioning system includes a multichannel heat exchanger including a first heat exchange channel having a first inlet and a first outlet, a second heat exchange channel having a second inlet and a second outlet, and a third heat exchange channel having a third inlet and a third outlet, a second end of the second indoor heat exchanger selectively communicating with one of the first inlet and the second inlet, the first outlet communicating with a first end of the first throttle valve, the second outlet communicating with the return air port, the third inlet communicating with a second end of the outdoor heat exchanger, and the third outlet selectively communicating with one of the second inlet and a first end of the second indoor heat exchanger, wherein the first heat exchange channel and the second heat exchange channel are heat exchangeable with each other, the third heat exchange channel and the second heat exchange channel may exchange heat with each other.
Optionally, the air conditioning system includes a gas-liquid separator having a gas inlet in selective communication with one of the second end of the outdoor heat exchanger and the second end of the second indoor heat exchanger and a gas outlet connected to the second inlet.
A vehicle according to an embodiment of the second aspect of the invention comprises an air conditioning system according to the above-described embodiment of the first aspect of the invention.
According to the vehicle, the air conditioning system is arranged, so that the air conditioning system has higher heating capacity in the heating mode, the heating performance of the air conditioning system is better, and passengers are more comfortable in the passenger compartment of the vehicle.
According to a control method of an air conditioning system of an embodiment of a third aspect of the present invention, the air conditioning system is the air conditioning system of the embodiment of the first aspect of the present invention, the air conditioning system has a cooling mode, a heating mode and a dehumidification mode, when the air conditioning system is in the heating mode, the second end of the first indoor heat exchanger is controlled to be communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger is controlled to be communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger is controlled to be communicated with the return air inlet, and the first throttle valve is in a throttle state; when the air conditioning system is in the cooling mode and the second end of the first indoor heat exchanger is communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger is communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger is communicated with the air return opening, and the first throttle valve is in a throttling state. When the air conditioning system is in the dehumidification mode and the second end of the first indoor heat exchanger is communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger is communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger is communicated with the air return opening, and the opening degree of the first throttle valve is larger than that of the first throttle valve in the refrigeration mode.
According to the control method of the air conditioning system, a refrigeration mode, a heating mode and a dehumidification mode can be realized, wherein the heating quantity of the air conditioning system in the heating mode is higher, the use requirement of a user can be better met, the humidity of the environment can be reduced in the dehumidification mode, and the comfort level of the user is further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an air conditioning system according to some embodiments of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
FIG. 4 is a schematic diagram of a multi-channel heat exchanger according to some embodiments of the invention;
FIG. 5 is a schematic view of the air conditioning system of FIG. 1 in a heating mode;
FIG. 6 is a schematic view of the air conditioning system of FIG. 1 in a cooling mode;
FIG. 7 is a schematic view of the air conditioning system of FIG. 1 in a dehumidification mode.
Reference numerals:
an air conditioning system 100;
a compressor 1; an air return port 11; an exhaust port 12;
a first indoor heat exchanger 2; a first control valve 21; the first valve port 211; a second valve port 212; a third port 213;
a second indoor heat exchanger 3; the second control valve 31; a fourth valve port 311; a fifth valve port 312; a sixth valve port 313;
an outdoor heat exchanger 4; a first throttle valve 41;
a third control valve 5;
a second throttle valve 6;
a cooling flow path 7; a cooler 71; a third throttle valve 72;
a multi-channel heat exchanger 8; a first inlet 811; a first outlet 812; a second inlet 821; a second outlet 822; a third inlet 831; a third outlet 832;
a gas-liquid separator 9.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
An air conditioning system 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
Referring to fig. 1, 5 and 6, an air conditioning system 100 according to an embodiment of the first aspect of the present invention includes a compressor 1, a first indoor heat exchanger 2, a second indoor heat exchanger 3, an outdoor heat exchanger 4 and a first throttle valve 41. The compressor 1 has a return port 11 and a discharge port 12, and the compressor 1 can compress a refrigerant, for example, carbon dioxide. The refrigerant enters the compressor 1 through the return port 11, is compressed, and is discharged through the discharge port 12. First end and the gas vent 12 of first indoor heat exchanger 2 link to each other, and refrigerant after the compression gets into first indoor heat exchanger 2, and first indoor heat exchanger 2 can regard as the condenser to use, can set up the fan and pass through first indoor heat exchanger 2 in order to drive the air current, and the air current after the heat transfer with first indoor heat exchanger 2 has higher temperature, can be used for adjusting indoor temperature. The second end of the first indoor heat exchanger 2 is selectively communicated with one of the first end of the second indoor heat exchanger 3 and the first end of the first throttle valve 41, and the second end of the second indoor heat exchanger 3 is selectively communicated with one of the return air port 11 and the first end of the first throttle valve 41. A first end of the outdoor heat exchanger 4 is connected to a second end of the first throttle valve 41, and a second end of the outdoor heat exchanger 4 is selectively communicated with one of the return air port 11 and the first end of the second indoor heat exchanger 3. The opening degree of the first throttle valve 41 is adjustable, and the first throttle valve 41 can play a role in throttling and reducing pressure.
When the second end of the first indoor heat exchanger 2 communicates with the first end of the second indoor heat exchanger 3, the second end of the second indoor heat exchanger 3 communicates with the first end of the first throttle valve 41 and the second end of the outdoor heat exchanger 4 communicates with the return air port 11. At this time, the air conditioning system 100 is in a heating mode (refer to an arrow in fig. 5 indicates a flow direction of the refrigerant), the refrigerant flows into the compressor 1 through the return air port 11 of the compressor 1, the compressor 1 compresses the refrigerant and then discharges the compressed refrigerant from the exhaust port 12, the refrigerant enters the first indoor heat exchanger 2 to condense and release heat and provide heat for the room, then the refrigerant enters the second indoor heat exchanger 3 to condense and release heat again and provide heat for the room, then the refrigerant flows through the first throttle valve 41 and enters the outdoor heat exchanger 4, the refrigerant evaporates and absorbs heat in the outdoor heat exchanger 4, and finally the refrigerant flows back to the compressor 1 through the return air port 11 to realize circulation of the refrigerant. Compared with the air conditioning system in the related art, the first indoor heat exchanger 2 and the second indoor heat exchanger 3 can simultaneously provide heat for the indoor space in the heating mode of the air conditioning system 100, so that the heating capacity of the air conditioning system 100 is improved, the heating performance of the air conditioning system 100 is improved, and the requirement of a user on heating is better met.
When the second end of the first indoor heat exchanger 2 communicates with the first end of the first throttle valve 41, the second end of the outdoor heat exchanger 4 communicates with the first end of the second indoor heat exchanger 3 and the second end of the second indoor heat exchanger 3 communicates with the return air port 11. At this time, the air conditioning system 100 is in a refrigeration mode (refer to an arrow in fig. 6 to indicate a flow direction of the refrigerant), the refrigerant flows into the compressor 1 through the return air port 11 of the compressor 1, the compressor 1 compresses the refrigerant and then discharges the compressed refrigerant from the exhaust port 12, the refrigerant enters the first indoor heat exchanger 2 to be condensed and release heat, at this time, the fan driving the air flow to pass through the first indoor heat exchanger 2 can be closed to prevent heat of the first indoor heat exchanger 2 from being diffused into the room, then the refrigerant flows through the first throttle valve 41 and enters the outdoor heat exchanger 4, the refrigerant is fully condensed and released heat in the outdoor heat exchanger 4 through the throttling function of the first throttle valve 41, then the refrigerant enters the second indoor heat exchanger 3 to be evaporated and absorbed, cold energy is provided for the room, and finally the refrigerant flows back to the compressor 1 through the return air port 11 to realize circulation of the refrigerant.
When the refrigerant used by the air conditioning system 100 is carbon dioxide, since the carbon dioxide refrigerant has a strong refrigeration effect and a weak heating effect, the first indoor heat exchanger 2 and the second indoor heat exchanger 3 both work in the heating mode of the air conditioning system 100, so that the heat exchange area is increased, the air conditioning system 100 has a high heating capacity in the heating mode, and the air conditioning system 100 has good refrigeration performance and heating performance.
According to the air conditioning system 100 of the present invention, a cooling mode and a heating mode can be realized, and the first indoor heat exchanger 2 and the second indoor heat exchanger 3 can both work in the heating mode, so that the air conditioning system 100 has a higher heating capacity in the heating mode, the heating performance of the air conditioning system 100 is improved, and the heating requirement of the user can be better satisfied.
Referring to fig. 2, according to some embodiments of the present invention, the second end of the first indoor heat exchanger 2 is connected to a first control valve 21, the first control valve 21 is a three-way valve, the first control valve 21 has first to third ports 213, the first port 211 is connected to the second end of the first indoor heat exchanger 2, the first port 211 is selectively communicated with one of the second port 212 and the third port 213, the second port 212 is connected to the first end of the second indoor heat exchanger 3, and the third port 213 is connected to the first end of the first throttle valve 41. When the air conditioning system 100 is in the heating mode, the first port 211 communicates with the second port 212, and the refrigerant flows from the second end of the first indoor heat exchanger 2 to the first port 211 of the first control valve 21, and then flows from the second port 212 to the second indoor heat exchanger 3. When the air conditioning system 100 is in the cooling mode, the first port 211 communicates with the third port 213, and the refrigerant flows from the second end of the first indoor heat exchanger 2 to the first port 211 of the first control valve 21, and then flows from the third port 213 to the first throttle valve 41. By providing the first control valve 21, the air conditioning system 100 can be switched between different refrigerant flow paths in the cooling mode and the heating mode, so that the refrigerant flow path of the air conditioning system 100 can be simplified.
Referring to fig. 3, according to some embodiments of the present invention, the second end of the second indoor heat exchanger 3 is connected to the second control valve 31, the second control valve 31 is a three-way valve, the second control valve 31 has fourth to sixth ports 313, the fourth port 311 is connected to the second end of the second indoor heat exchanger 3, the fourth port 311 is selectively communicated with one of the fifth port 312 and the sixth port 313, the fifth port 312 is connected to the return port 11, and the sixth port 313 is connected to the first end of the first throttle valve 41. When the air conditioning system 100 is in the heating mode, the fourth port 311 and the sixth port 313 communicate with each other, and the refrigerant flows from the second end of the second indoor heat exchanger 3 to the fourth port 311 of the second control valve 31, and then flows from the sixth port 313 to the first throttle 41. When the air conditioning system 100 is in the cooling mode, the fourth port 311 is communicated with the fifth port 312, the refrigerant flows from the second end of the second indoor heat exchanger 3 to the fourth port 311 of the first control valve 21, and then flows from the fifth port 312 to the return air port 11 of the compressor 1. By providing the second control valve 31, the air conditioning system 100 can be switched between different refrigerant flow paths in the cooling mode and the heating mode, so that the refrigerant flow path of the air conditioning system 100 can be simplified.
Referring to fig. 1, according to some embodiments of the present invention, the air conditioning system 100 includes a third control valve 5 and a second throttle valve 6, the third control valve 5 is connected in series between the second end of the outdoor heat exchanger 4 and the return air port 11, the third control valve 5 is used for controlling the on/off of the flow path, and the second throttle valve 6 is connected in series between the second end of the outdoor heat exchanger 4 and the first end of the second indoor heat exchanger 3. When the air conditioning system 100 is in the heating mode, the third control valve 5 is turned on, the second throttle valve 6 is fully closed, and the refrigerant discharged from the outdoor heat exchanger 4 may flow through the third control valve 5 and toward the return port 11 of the compressor 1. When the air conditioning system 100 is in the cooling mode, the third control valve 5 is closed, the second throttle valve 6 has a certain opening degree and is in a throttle state, and the refrigerant discharged from the outdoor heat exchanger 4 may flow through the second throttle valve 6 and toward the second indoor heat exchanger 3.
Referring to fig. 1, according to some embodiments of the present invention, the air conditioning system 100 includes a cooling flow path 7, the cooling flow path 7 being connected in parallel with the second indoor heat exchanger 3, and a cooler 71 being connected in series to the cooling flow path 7. When the air conditioning system 100 is in the cooling mode, a portion of the refrigerant discharged from the outdoor heat exchanger 4 may flow to the second indoor heat exchanger 3, and another portion of the refrigerant may flow to the cooler 71, and the cooler 71 has an effect of cooling an object, and the refrigerant flowing from the second indoor heat exchanger 3 and the refrigerant flowing from the cooler 71 may merge and flow back to the compressor 1. For example, when the air conditioning system 100 is used in a vehicle such as an electric car, the cooler 71 may be provided on a battery assembly of the electric car to cool the battery assembly.
Referring to fig. 1, optionally, a third throttle 72 is connected in series to the cooling flow path 7, the third throttle 72 is connected to an upstream side of the cooler 71 (the upstream side is a side where the refrigerant flows from the third throttle 72 to the cooler 71 with respect to a flow direction of the refrigerant), the third throttle 72 may open or shut the cooling flow path 7, and the third throttle 72 may adjust an opening degree to adjust a flow rate of the refrigerant flowing to the cooler 71. When the air conditioning system 100 is in the cooling mode, when the third throttle valve 72 is closed, all the refrigerant discharged from the outdoor heat exchanger 4 enters the second indoor heat exchanger 3; when the third throttle 72 is opened, a portion of the refrigerant discharged from the outdoor heat exchanger 4 flows to the second indoor heat exchanger 3, and another portion of the refrigerant may flow to the cooler 71, for example, when the air conditioning system 100 is used in a vehicle such as an electric vehicle, the cooler 71 is disposed on a battery pack of the electric vehicle, a portion of the refrigerant discharged from the outdoor heat exchanger 4 flows to the second indoor heat exchanger 3 to cool a passenger compartment, and another portion of the refrigerant may flow to the cooler 71 to cool the battery pack.
Referring to fig. 1, in some embodiments of the present invention, an air conditioning system 100 is applied in a vehicle such as an electric car, and the air conditioning system 100 includes a cooling flow path 7 and a second throttle 6. The cooling flow path 7 is connected in parallel to the second indoor heat exchanger 3, the cooler 71 is connected in series to the cooling flow path 7, the cooler 71 is provided in a battery pack of the electric vehicle, the third throttle 72 is connected in series to the cooling flow path 7, and the third throttle 72 is connected to the upstream side of the cooler 71. The second throttle valve 6 is connected in series between the second end of the outdoor heat exchanger 4 and the first end of the second indoor heat exchanger 3. When the air conditioning system 100 is in the cooling mode, the second throttle valve 6 is opened, and the third throttle valve 72 is closed, all the refrigerant discharged from the outdoor heat exchanger 4 flows to the second indoor heat exchanger 3 to cool the passenger compartment; when the second throttle 6 is closed and the third throttle 72 is opened, the entire refrigerant discharged from the outdoor heat exchanger 4 flows to the cooler 71 to cool the battery pack; when the second throttle 6 is opened and the third throttle 72 is opened, a part of the refrigerant discharged from the outdoor heat exchanger 4 flows to the second indoor heat exchanger 3 to cool the passenger compartment, and another part of the refrigerant can flow to the cooler 71 to cool the battery pack, and by adjusting the opening degrees of the second throttle 6 and the third throttle 72, the proportion of the refrigerant distributed to the second indoor heat exchanger 3 and the cooler 71 can be adjusted, so that the cooling effect of the second indoor heat exchanger 3 on the passenger compartment and the battery pack by the cooler 71 can be adjusted.
Referring to fig. 1 and 4, according to some embodiments of the present invention, the air conditioning system 100 includes a multi-channel heat exchanger 8, the multi-channel heat exchanger 8 including a first heat exchange channel having a first inlet 811 and a first outlet 812, a second heat exchange channel having a second inlet 821 and a second outlet 822, a third heat exchange channel having a third inlet 831 and a third outlet 832, a second end of the second indoor heat exchanger 3 selectively communicating with one of the first inlet 811 and the second inlet 821, the first outlet 812 being connected to a first end of the first throttle valve 41, the second outlet 822 being connected to the return air inlet 11, the third inlet 831 being connected to a second end of the outdoor heat exchanger 4, the third outlet 832 being selectively communicating with one of the second inlet 821 and a first end of the second indoor heat exchanger 3, wherein the first heat exchange channel and the second heat exchange channel can exchange heat with each other, the third heat exchange channel and the second heat exchange channel can exchange heat with each other. When the air conditioning system 100 is in the heating mode, the second end of the second indoor heat exchanger 3 is communicated with the first inlet 811, the third outlet 832 is communicated with the second inlet 821, the refrigerant flowing out of the second indoor heat exchanger 3 enters the multichannel heat exchanger 8 from the first inlet 811 and is discharged from the first outlet 812, and then the refrigerant sequentially flows through the first throttle 41 and the outdoor heat exchanger 4 and enters the multichannel heat exchanger 8 from the third inlet 831, and then flows out of the third outlet 832, enters the multichannel heat exchanger 8 from the second inlet 821, and then flows back to the compressor 1 from the second outlet 822. The refrigerant flowing through the first heat exchange channel still has certain heat, the temperature of the refrigerant in the second heat exchange channel is lower after the refrigerant is subjected to heat exchange through the outdoor heat exchanger 4, and the refrigerant in the first heat exchange channel can transfer the heat to the refrigerant in the second heat exchange channel through the heat exchange of the first heat exchange channel and the second heat exchange channel, so that the heat is recycled by the air conditioning system 100, and the heating performance of the air conditioning system 100 is improved.
When the air conditioning system 100 is in the cooling mode, the second end of the second indoor heat exchanger 3 is communicated with the second inlet 821, the third outlet 832 is communicated with the first end of the second indoor heat exchanger 3, the refrigerant flowing out of the outdoor heat exchanger 4 enters the multichannel heat exchanger 8 from the third inlet 831, then the refrigerant flows to the second indoor heat exchanger 3 from the third outlet 832, and the refrigerant flowing out of the second indoor heat exchanger 3 enters the multichannel heat exchanger 8 from the second inlet 821 and flows back to the compressor 1 from the second outlet 822. The refrigerant flowing through the second heat exchange channel still has certain cold quantity, the temperature of the refrigerant in the third heat exchange channel is higher, and the refrigerant in the second heat exchange channel can transfer the cold quantity to the refrigerant in the third heat exchange channel through the heat exchange of the second heat exchange channel and the third heat exchange channel, so that the cold quantity can be recycled by the air conditioning system 100, and the refrigerating performance of the air conditioning system 100 is improved.
Referring to fig. 1, the air conditioning system 100 may optionally include a gas-liquid separator 9, and the gas-liquid separator 9 may separate the mixed gaseous refrigerant and liquid refrigerant. The gas-liquid separator 9 has a gas inlet selectively communicating with one of the second end of the outdoor heat exchanger 4 and the second end of the second indoor heat exchanger 3, and a gas outlet connected to the second inlet 821. When the air conditioning system 100 is in the heating mode, the air inlet is communicated with the second end of the outdoor heat exchanger 4, the refrigerant discharged from the outdoor heat exchanger 4 enters the gas-liquid separator 9 from the air inlet, then the gaseous refrigerant and the liquid refrigerant flow to the second inlet 821 from the air outlet, the gaseous refrigerant and the liquid refrigerant can absorb the refrigerant heat in the first heat exchange channel in the second heat exchange channel, a part of the liquid refrigerant is evaporated into a gaseous state, then the gaseous refrigerant and the liquid refrigerant flow to the compressor 1, and the power system of the compressor 1 generates heat to completely evaporate the remaining liquid refrigerant into a gaseous state, so that liquid impact on the compressor 1 is prevented. When the air conditioning system 100 is in the refrigeration mode, the air inlet is communicated with the second end of the second indoor heat exchanger 3, the refrigerant of the second indoor heat exchanger 3 enters the gas-liquid separator 9 from the air inlet, then the gaseous refrigerant and the liquid refrigerant flow to the second inlet 821 from the air outlet, the gaseous refrigerant and the liquid refrigerant can transmit cold energy to the refrigerant in the third heat exchange channel in the second heat exchange channel, a part of the liquid refrigerant is evaporated into a gaseous state, then the gaseous refrigerant and the liquid refrigerant flow to the compressor 1, the power system of the compressor 1 generates heat and can completely evaporate the rest of the liquid refrigerant into a gaseous state, and therefore liquid impact on the compressor 1 is prevented.
The gas-liquid separator 9 is disposed on the upstream side of the second inlet 821, and the liquid refrigerant in the refrigerant that enters the gas-liquid separator 9 from the air inlet has a higher specific gravity than the gas-liquid separator 9 is disposed on the downstream side of the second outlet 822 (the downstream side is the side where the refrigerant flows from the second outlet 822 to the gas-liquid separator 9 with respect to the flow direction of the refrigerant). If the gas-liquid separator 9 is disposed at the downstream side of the second outlet 822, the refrigerant first passes through the multi-channel heat exchanger 8 and absorbs heat, a part of the liquid refrigerant is evaporated into a gaseous refrigerant, and then the gaseous refrigerant enters the gas-liquid separator 9, where the specific gravity of the liquid refrigerant is relatively low. The design can improve the specific gravity of the liquid refrigerant in the gas-liquid separator 9, thereby improving the refrigerant quantity in the whole air-conditioning system 100 and improving the performance of the air-conditioning system 100.
Referring to fig. 1, in some embodiments of the present invention, the air conditioning system 100 includes a cooling flow path 7 and a gas-liquid separator 9, the cooling flow path 7 is connected in parallel with the second indoor heat exchanger 3, a cooler 71 is connected in series to the cooling flow path 7, the gas-liquid separator 9 is disposed on an upstream side of the air return opening 11, and the gas-liquid separator 9 is located on a downstream side of the outdoor heat exchanger 4 when the air conditioning system 100 is in a heating mode; when the air conditioning system 100 is in the cooling mode, the gas-liquid separator 9 is located on the downstream side of the second indoor heat exchanger 2 and the cooler 71. The upstream pipeline of the gas-liquid separator 9, the downstream pipeline of the outdoor heat exchanger 4, the downstream pipeline of the second indoor heat exchanger 3 and the downstream pipeline of the cooler 71 form a four-channel structure, and the design can simplify the refrigerant flow path of the air conditioning system 100.
A vehicle according to an embodiment of the second aspect of the invention comprises an air conditioning system 100 according to the above-described embodiment of the first aspect of the invention. By arranging the air conditioning system 100, the temperature in the passenger compartment of the vehicle can be adjusted, and when the vehicle is an electric vehicle, the cooler 71 can cool down the battery pack of the electric vehicle.
According to the vehicle of the present invention, by providing the air conditioning system 100, the air conditioning system 100 has a higher heating capacity in the heating mode, the heating performance of the air conditioning system 100 is better, and the passenger is more comfortable in the passenger compartment of the vehicle.
Referring to fig. 5 to 7, according to a control method of the air conditioning system 100 according to the embodiment of the third aspect of the present invention, the air conditioning system 100 is the air conditioning system 100 according to the above-described first aspect of the present invention, and the air conditioning system 100 has a cooling mode, a heating mode, and a dehumidifying mode. When the air conditioning system 100 is in the heating mode (refer to an arrow in fig. 5 indicating a flow direction of the refrigerant), the first end of the first indoor heat exchanger 2 is controlled to be communicated with the first end of the second indoor heat exchanger 3, the second end of the second indoor heat exchanger 3 is controlled to be communicated with the first end of the first throttle valve 41, the second end of the outdoor heat exchanger 4 is controlled to be communicated with the return air inlet 11, and the first throttle valve 41 is controlled to be in the throttle state. The refrigerant flows into the compressor 1 through the air return port 11 of the compressor 1, the compressor 1 compresses the refrigerant and then discharges the refrigerant from the exhaust port 12, the refrigerant enters the first indoor heat exchanger 2 to be condensed and released heat to provide heat indoors, then the refrigerant enters the second indoor heat exchanger 3 to be condensed and released heat again to provide heat indoors, then the refrigerant sequentially flows through the first heat exchange channel and the first throttle valve 41 and enters the outdoor heat exchanger 4, the refrigerant evaporates and absorbs heat in the outdoor heat exchanger 4, then the refrigerant sequentially flows through the third heat exchange channel, the third control valve 5, the gas-liquid separator 9 and the second heat exchange channel, and finally the refrigerant flows back to the compressor 1 through the air return port 11, so that the circulation of the refrigerant is realized. According to the control method of the air conditioning system 100, when the air conditioning system 100 is in the heating mode, the first indoor heat exchanger 2 and the second indoor heat exchanger 3 exchange heat with the air flow at the same time, so that the heating capacity of the air conditioning system 100 is improved, and the heating performance of the air conditioning system 100 is improved. Meanwhile, the refrigerant flowing through the first heat exchange channel still has certain heat, the temperature of the refrigerant in the second heat exchange channel is lower after the heat exchange of the refrigerant in the outdoor heat exchanger 4, and the refrigerant in the first heat exchange channel can transfer the heat to the refrigerant in the second heat exchange channel through the heat exchange of the first heat exchange channel and the second heat exchange channel, so that the heat can be recycled by the air conditioning system 100, and the heating performance of the air conditioning system 100 is improved.
When the air conditioning system 100 is in the cooling mode (refer to an arrow in fig. 6 indicating a flow direction of the refrigerant), when the first end of the first indoor heat exchanger 2 communicates with the first end of the first throttle valve 41, the second end of the outdoor heat exchanger 4 communicates with the first end of the second indoor heat exchanger 3, the second end of the second indoor heat exchanger 3 communicates with the return air port 11, and the first throttle valve 41 is in the throttled state. The refrigerant flows into the compressor 1 through the air return port 11 of the compressor 1, the compressor 1 compresses the refrigerant and then discharges the refrigerant from the exhaust port 12, the refrigerant enters the first indoor heat exchanger 2 to be condensed and released heat, at the moment, the fan driving the air flow to pass through the first indoor heat exchanger 2 can be closed to prevent heat from being diffused indoors, then the refrigerant flows through the first throttle valve 41 and enters the outdoor heat exchanger 4, and the refrigerant is fully condensed and released heat in the outdoor heat exchanger 4 through the throttling function of the first throttle valve 41. And then the refrigerant flows through the third heat exchange channel and enters at least one of the second indoor heat exchanger 3 and the cooler 71 to evaporate and absorb heat, so that cold energy is provided for the indoor or battery pack, and finally the refrigerant flows through the second heat exchange channel and flows back to the compressor 1 through the air return port 11, so that the circulation of the refrigerant is realized. The refrigerant flowing through the second heat exchange channel still has certain cold quantity, the temperature of the refrigerant in the third heat exchange channel is higher, and the refrigerant in the second heat exchange channel can transfer the cold quantity to the refrigerant in the third heat exchange channel through the heat exchange of the second heat exchange channel and the third heat exchange channel, so that the cold quantity can be recycled by the air conditioning system 100, and the refrigerating performance of the air conditioning system 100 is improved.
When the air conditioning system 100 is in the dehumidification mode (refer to an arrow in fig. 7 indicating a flow direction of the refrigerant), when the first end of the first indoor heat exchanger 2 communicates with the first end of the first throttle valve 41, the second end of the outdoor heat exchanger 4 communicates with the first end of the second indoor heat exchanger 3, the second end of the second indoor heat exchanger 3 communicates with the return air port 11, and the opening degree of the first throttle valve 41 is greater than that of the first throttle valve 41 in the refrigeration mode. When indoor humidity is higher, can absorb heat through second indoor heat exchanger 3 evaporation so that indoor vapor condenses into the water droplet on second indoor heat exchanger 3, but this in-process can cause the user discomfort to some cold air of indoor discharge, provides heat in order to adjust indoor temperature through first indoor heat exchanger 2 this moment for indoor temperature and humidity are comfortable. The refrigerant flows into the compressor 1 through the air return port 11 of the compressor 1, the compressor 1 compresses the refrigerant, the refrigerant enters the first indoor heat exchanger 2 to be condensed and released heat, at the moment, a fan driving the air flow to pass through the first indoor heat exchanger 2 can be opened to diffuse heat indoors, then the refrigerant flows through the first throttle valve 41 and enters the outdoor heat exchanger 4, and the refrigerant is less released heat in the outdoor heat exchanger 4 because the opening degree of the first throttle valve 41 is larger than the opening degree of the first throttle valve 41 in the cooling mode. And then the refrigerant flows through the third heat exchange channel and enters the second indoor heat exchanger 3 to be evaporated and absorb heat, so that indoor water vapor is condensed into water drops on the second indoor heat exchanger 3, the indoor humidity is reduced, and finally the refrigerant flows through the second heat exchange channel and flows back to the compressor 1 through the air return port 11, so that the circulation of the refrigerant is realized. Wherein, the cold medium in the second indoor heat exchanger 3 can be to indoor discharge air conditioning when the heat absorption of evaporation, through the indoor hot-blast of discharging of first indoor heat exchanger 2, can neutralize the cold volume of second indoor heat exchanger 3 to indoor discharge for indoor temperature and humidity are comfortable.
Alternatively, the opening degree of the first throttle valve 41 may be adjusted to adjust the indoor temperature in the dehumidification mode. When the indoor temperature is low, the opening degree of the first throttle valve 41 can be increased to reduce the cold quantity discharged to the indoor by the second indoor heat exchanger 3, so that the indoor temperature is increased; when the indoor temperature is high, the opening degree of the first throttle valve 41 may be adjusted to be small to increase the cooling capacity of the second indoor heat exchanger 3 discharged indoors, thereby reducing the indoor temperature. By adjusting the indoor temperature in the dehumidification mode, the air conditioning system 100 can accurately control the indoor humidity and temperature at the same time, and user experience is improved.
According to the control method of the air conditioning system, a refrigeration mode, a heating mode and a dehumidification mode can be realized, wherein the heating quantity of the air conditioning system in the heating mode is higher, the use requirement of a user can be better met, the humidity of the environment can be reduced in the dehumidification mode, and the comfort level of the user is further improved.
For example, in the example of fig. 1, the air conditioning system 100 includes a compressor 1, a first indoor heat exchanger 2, a first control valve 21, a second indoor heat exchanger 3, a second control valve 31, an outdoor heat exchanger 4, a first throttle valve 41, a third control valve 5, a second throttle valve 6, a cooling flow path 7, a multi-pass heat exchanger 8, and a gas-liquid separator 9. The compressor 1 has a return port 11 and a discharge port 12. A first end of the first indoor heat exchanger 2 is connected to the exhaust port 12, a second end of the first indoor heat exchanger 2 is connected to the first control valve 21, the first control valve 21 has first to third ports 213, the first port 211 is selectively communicated with one of the second port 212 and the third port 213, the second port 212 is connected to a first end of the second indoor heat exchanger 3, and the third port 213 is connected to a first end of the first throttle valve 41. A second end of the second indoor heat exchanger 3 is connected to the second control valve 31, the second control valve 31 has fourth to sixth ports 313, the fourth port 311 is connected to the second end of the second indoor heat exchanger 3, the fourth port 311 is selectively communicated with one of the fifth port 312 and the sixth port 313, the fifth port 312 is connected to the return port 11, and the sixth port 313 is connected to the first end of the first throttle valve 41.
A second end of the first throttle valve 41 is connected to a first end of the outdoor heat exchanger 4, a second end of the outdoor heat exchanger 4 is selectively communicated with one of the return air port 11 and a first end of the second indoor heat exchanger 3, the third control valve 5 is connected in series between the second end of the outdoor heat exchanger 4 and the return air port 11, and the second throttle valve 6 is connected in series between the second end of the outdoor heat exchanger 4 and the first end of the second indoor heat exchanger 3. The cooling flow path 7 is connected in parallel to the second indoor heat exchanger 3, the cooler 71 is connected in series to the cooling flow path 7, the third throttle 72 is connected in series to the cooling flow path 7, and the third throttle 72 is connected upstream of the cooler 71.
The multi-channel heat exchanger 8 includes a first heat exchange channel having a first inlet 811 and a first outlet 812, a second heat exchange channel having a second inlet 821 and a second outlet 822, and a third heat exchange channel having a third inlet 831 and a third outlet 832, the second end of the second indoor heat exchanger 3 is selectively communicated with one of the first inlet 811 and the second inlet 821, the first outlet 812 is connected with the first end of the first throttle valve 41, the second outlet 822 is connected with the return air port 11, the third inlet 831 is connected with the second end of the outdoor heat exchanger 4, and the third outlet 832 is selectively communicated with one of the second inlet 821 and the first end of the second indoor heat exchanger 3. The gas-liquid separator 9 has a gas inlet selectively communicating with one of the second end of the outdoor heat exchanger 4 and the second end of the second indoor heat exchanger 3, and a gas outlet connected to the second inlet 821.
When the air conditioning system 100 is in the heating mode, a refrigerant flows into the compressor 1 through the return air port 11 of the compressor 1, the compressor 1 compresses the refrigerant and then discharges the refrigerant from the exhaust port 12, the refrigerant enters the first indoor heat exchanger 2 to be condensed and heat-released, then the refrigerant flows through the first control valve 21 and enters the second indoor heat exchanger 3, the refrigerant is condensed and heat-released again, then the refrigerant sequentially flows through the first heat exchange channel and the first throttle valve 41 and enters the outdoor heat exchanger 4, the refrigerant evaporates and absorbs heat in the outdoor heat exchanger 4, then the refrigerant sequentially flows through the third heat exchange channel, the third control valve 5, the gas-liquid separator 9 and the second heat exchange channel, and finally the refrigerant flows back to the compressor 1 through the return air port 11, so that the circulation of the refrigerant is realized.
When the air conditioning system 100 is in the cooling mode, the refrigerant flows into the compressor 1 through the air return port 11 of the compressor 1, the compressor 1 compresses the refrigerant and then discharges the compressed refrigerant from the air discharge port 12, the refrigerant enters the first indoor heat exchanger 2 to be condensed and release heat, then the refrigerant sequentially flows through the first control valve 21 and the first throttle valve 41 and enters the outdoor heat exchanger 4, and the refrigerant is condensed and released heat in the outdoor heat exchanger 4. Then the refrigerant flows through the third heat exchange channel and enters at least one of the second indoor heat exchanger 3 and the cooler 71 to evaporate and absorb heat, and finally the refrigerant flows through the gas-liquid separator 9 and the second heat exchange channel in sequence and flows back to the compressor 1 through the air return port 11, so that the circulation of the refrigerant is realized.
When the air conditioning system 100 is in the dehumidification mode, the refrigerant flows into the compressor 1 through the air return port 11 of the compressor 1, the compressor 1 compresses the refrigerant and then discharges the compressed refrigerant from the air discharge port 12, the refrigerant enters the first indoor heat exchanger 2 to be condensed and release heat, then the refrigerant sequentially flows through the first control valve 21 and the first throttle valve 41 and enters the outdoor heat exchanger 4, and the refrigerant is condensed and released heat in the outdoor heat exchanger 4. And then the refrigerant flows through the third heat exchange channel and enters the second indoor heat exchanger 3 to be evaporated and absorb heat, and finally the refrigerant flows through the gas-liquid separator 9 and the second heat exchange channel in sequence and flows back to the compressor 1 through the gas return port 11, so that the circulation of the refrigerant is realized.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An air conditioning system, comprising:
a compressor having a return air port and an exhaust port;
a first end of the first indoor heat exchanger is connected with the exhaust port;
a second indoor heat exchanger;
a first throttle valve, a second end of the first indoor heat exchanger selectively communicating with one of a first end of the second indoor heat exchanger and a first end of the first throttle valve, a second end of the second indoor heat exchanger selectively communicating with one of the return air port and the first end of the first throttle valve;
an outdoor heat exchanger, a first end of the outdoor heat exchanger being connected to a second end of the first throttle valve, a second end of the outdoor heat exchanger being selectively in communication with one of the return air port and the first end of the second indoor heat exchanger;
when the second end of the first indoor heat exchanger is communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger is communicated with the first end of the first throttling valve, and the second end of the outdoor heat exchanger is communicated with the air return opening;
when the second end of the first indoor heat exchanger is communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger is communicated with the first end of the second indoor heat exchanger, and the second end of the second indoor heat exchanger is communicated with the air return port.
2. The air conditioning system as claimed in claim 1, wherein the second end of the first indoor heat exchanger is connected to a first control valve, the first control valve is a three-way valve having first to third ports, the first port is connected to the second end of the first indoor heat exchanger, the first port is selectively communicated with one of the second port and the third port, the second port is connected to the first end of the second indoor heat exchanger, and the third port is connected to the first end of the first throttle valve.
3. The air conditioning system as claimed in claim 1, wherein the second end of the second indoor heat exchanger is connected to a second control valve, the second control valve is a three-way valve, the second control valve has fourth to sixth ports, the fourth port is connected to the second end of the second indoor heat exchanger, the fourth port is selectively communicated with one of the fifth port and the sixth port, the fifth port is connected to the return port, and the sixth port is connected to the first end of the first throttle valve.
4. The air conditioning system of claim 1, comprising a third control valve and a second throttle valve, wherein the third control valve is connected in series between the second end of the outdoor heat exchanger and the return air port, the third control valve is used for controlling the on-off of the flow path, and the second throttle valve is connected in series between the second end of the outdoor heat exchanger and the first end of the second indoor heat exchanger.
5. The air conditioning system of claim 1, including a cooling flow path in parallel with the second indoor heat exchanger, the cooling flow path having a chiller coupled thereto in series.
6. The air conditioning system of claim 5, wherein a third throttle valve is connected in series with the cooling flow path, the third throttle valve being connected on an upstream side of the cooler.
7. The air conditioning system of claim 1, comprising: a multi-channel heat exchanger comprising a first heat exchange channel, a second heat exchange channel and a third heat exchange channel, the first heat exchange channel having a first inlet and a first outlet, the second heat exchange channel having a second inlet and a second outlet, the third heat exchange passage has a third inlet and a third outlet, the second end of the second indoor heat exchanger is selectively communicated with one of the first inlet and the second inlet, the first outlet is connected with the first end of the first throttle valve, the second outlet is connected with the return air port, the third inlet is connected to the second end of the outdoor heat exchanger and the third outlet is selectively in communication with one of the second inlet and the first end of the second indoor heat exchanger, wherein the first heat exchange channel and the second heat exchange channel are heat exchangeable, and the third heat exchange channel and the second heat exchange channel are heat exchangeable.
8. The air conditioning system of claim 7, comprising: a gas-liquid separator having a gas inlet selectively in communication with one of the second end of the outdoor heat exchanger and the second end of the second indoor heat exchanger and a gas outlet connected to the second inlet.
9. A vehicle, characterized by comprising: air conditioning system according to any of claims 1-8.
10. A control method of an air conditioning system, characterized in that the air conditioning system is the air conditioning system according to any one of claims 1 to 8, the air conditioning system has a cooling mode, a heating mode and a dehumidifying mode,
when the air conditioning system is in the heating mode, controlling the second end of the first indoor heat exchanger to be communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger to be communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger to be communicated with the air return opening, and the first throttle valve to be in a throttling state;
when the air conditioning system is in the cooling mode, when the second end of the first indoor heat exchanger is communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger is communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger is communicated with the air return opening, and the first throttle valve is in a throttling state;
when the air conditioning system is in the dehumidification mode and the second end of the first indoor heat exchanger is communicated with the first end of the first throttle valve, the second end of the outdoor heat exchanger is communicated with the first end of the second indoor heat exchanger, the second end of the second indoor heat exchanger is communicated with the air return opening, and the opening degree of the first throttle valve is larger than that of the first throttle valve in the refrigeration mode.
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| CN201911423741.XA CN111114239B (en) | 2019-12-31 | 2019-12-31 | Air conditioning system, vehicle and control method of air conditioning system |
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| CN201911423741.XA CN111114239B (en) | 2019-12-31 | 2019-12-31 | Air conditioning system, vehicle and control method of air conditioning system |
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| CN111114239B true CN111114239B (en) | 2021-11-05 |
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| JP2004189069A (en) * | 2002-12-10 | 2004-07-08 | Matsushita Electric Ind Co Ltd | Refrigeration cycle device |
| JP2013151183A (en) * | 2012-01-24 | 2013-08-08 | Panasonic Corp | Air conditioning device for vehicle |
| CN107449129A (en) * | 2017-08-04 | 2017-12-08 | 广东美芝制冷设备有限公司 | Air-conditioning system and there is its vehicle |
| CN109941114A (en) * | 2017-12-21 | 2019-06-28 | 本田技研工业株式会社 | Electric vehicle |
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