CN217347410U - Air conditioner and freight truck - Google Patents
Air conditioner and freight truck Download PDFInfo
- Publication number
- CN217347410U CN217347410U CN202122165976.2U CN202122165976U CN217347410U CN 217347410 U CN217347410 U CN 217347410U CN 202122165976 U CN202122165976 U CN 202122165976U CN 217347410 U CN217347410 U CN 217347410U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- air conditioner
- port
- flow path
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims description 29
- 238000010257 thawing Methods 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 14
- 239000011232 storage material Substances 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 101
- 239000003507 refrigerant Substances 0.000 description 36
- 230000001276 controlling effect Effects 0.000 description 21
- 239000000110 cooling liquid Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 238000007664 blowing Methods 0.000 description 8
- 241001669679 Eleotris Species 0.000 description 7
- 239000002826 coolant Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000013526 supercooled liquid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
The application provides an air conditioner and a freight truck, wherein the air conditioner is used for regulating the temperature in the environment where the air conditioner is located; the air conditioner comprises a heater for heating the bed. According to the air conditioner and the vehicle, the heating comfort can be improved.
Description
Technical Field
The application belongs to the technical field of freight trucks, and particularly relates to an air conditioner and a freight truck.
Background
At present, a parking air conditioner is an air conditioner widely used by a driver when a freight truck stops, unloads and loads goods, and the parking air conditioner utilizes a storage battery carried by or additionally arranged on the truck to provide power for the air conditioner. Most of the existing parking air conditioners are single coolers, the vehicle cabin cannot be heated in winter, and a small part of parking air conditioners with heating functions are in a form of blowing hot air from the top of the vehicle, however, the cab of a truck is usually high, the air supply distance of the air conditioners is limited, the blown hot air rises due to low density, so that the interior of the vehicle cabin is hot at the top and cold at the bottom, and the actual heating comfort is poor; in addition, the whole space of the cab is heated by hot air, so that the heat loss of the cab to the outside of the vehicle is accelerated, the electric quantity of the storage battery is wasted, and the heating requirement cannot be met.
Therefore, how to provide an air conditioner and a freight truck capable of improving heating comfort is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
Accordingly, an object of the present invention is to provide an air conditioner and a freight truck capable of improving heating comfort.
In order to solve the above problems, the present application provides an air conditioner for adjusting a temperature of an environment in which the air conditioner is located; the air conditioner comprises a heater for heating the bed.
Further, the heater is a first heat exchanger, and the air conditioner comprises a second heat exchanger; the first heat exchanger is communicated with the second heat exchanger to form a first circulation flow path; the second heat exchanger is used for heating the first heat exchange medium in the first circulation flow path.
Further, the air conditioner also comprises a compressor, a third heat exchanger and a throttling device; the compressor, the second heat exchanger, the throttling device and the third heat exchanger are connected to form a second circulation flow path; the second heat exchange medium and the first heat exchange medium compressed by the compressor can exchange heat in the second heat exchanger so as to heat the first heat exchange medium heated by the bed.
Further, the air conditioner also comprises a fourth heat exchanger; the compressor, the third heat exchanger, the throttling device and the fourth heat exchanger are connected to form a third circulating flow path, and the third circulating flow path is used for reducing the air temperature in the room where the air conditioner is located or defrosting the third heat exchanger.
Further, the air conditioner further comprises a first switching mechanism; the first switching mechanism is used for switching the air conditioner between a heat exchange state and a cooling state.
Further, the first switching mechanism includes a first three-way valve including an a1 port, a B1 port, and a C1 port; the port A1 is communicated with the third heat exchanger, and the port B1 is communicated with the outlet of the compressor; the port C1 is communicated to the inlet of the compressor;
and/or, the first switching mechanism comprises a second three-way valve comprising an a2 port, a B2 port, and a C2 port; the port A2 is communicated with a throttling device, and the port B2 is communicated with a fourth heat exchanger; and the port C2 is communicated with the second heat exchanger.
Further, the first heat exchanger is arranged at the bottom of the bed; the first heat exchanger comprises a heat exchanger body and a phase change energy storage material, wherein the phase change energy storage material is arranged outside the heat exchanger body.
Further, the first heat exchanger is communicated with an external engine heat dissipation structure to form a fourth circulation flow path.
Further, the air conditioner further comprises a second switching mechanism; the first circulation flow path is communicated, and the fourth circulation flow path is disconnected to be in a heating state; the first circulation flow path is disconnected, the fourth circulation flow path is connected to be in a preheating state, and the second switching mechanism is used for switching the air conditioner between the heating state and the preheating state.
Further, the second switching mechanism includes a third three-way valve including an a3 port, a B3 port, and a C3 port; the port A3 is communicated with the first heat exchanger, and the port B3 is communicated with the second heat exchanger; the C3 port communicates with the engine heat sink.
According to a further aspect of the application, a freight truck is provided, comprising an air conditioner, the air conditioner being the air conditioner described above.
The application provides an air conditioner and freight transportation truck, this application is through to the direct heating of bed to the heat is accelerated to the car outer loss after having avoided blowing hot-blast last hot cold and the whole space heating of driver's cabin that leads to, satisfies the demand that the driver had a rest on the car winter and practices thrift battery power. The direct heating of the bed is more comfortable than the blowing of hot air from top to bottom; local heating is more energy-saving than integral space heating; this application not only can improve the travelling comfort that heats, can also practice thrift battery power.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present application in a heating state;
FIG. 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present disclosure in a cooling or defrosting state;
FIG. 3 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention in a preheating state;
fig. 4 is a schematic structural diagram of a first heat exchanger according to an embodiment of the present application.
The reference numerals are represented as:
11. a first heat exchanger; 111. a heat exchanger body; 112. a phase change energy storage material; 113. a thermal insulation layer; 114. A heat conducting portion; 115. a first heat exchange medium inlet; 116. a first heat exchange medium outlet; 12. a second heat exchanger; 13. a third heat exchanger; 131. a first fan; 14. a fourth heat exchanger; 141. a second fan; 2. a bed is paved; 3. a compressor; 4. a throttling device; 5. a pump body; 6. an engine heat dissipation structure; 71. a first three-way valve; 72. a second three-way valve; 73. and a third three-way valve.
Detailed Description
Referring to fig. 1-4 in combination, an air conditioner for regulating the temperature of an environment in which the air conditioner is located; the air conditioner includes a heater for heating the bed 2. Through to bed 2 direct heating to the heat is accelerated to run off to the car outward after having avoided blowing hot-blast upper heat that leads to and cold and the whole space heating in driver's cabin, satisfies the demand that the driver had a rest on the car winter and practices thrift the battery electric quantity. The direct heating of the bed 2 is more comfortable than the blowing of hot air from top to bottom; local heating is more energy-saving than integral space heating; this application not only can improve the travelling comfort that heats, can also practice thrift the battery electric quantity. The first heat exchange medium may be a cooling liquid, such as water. The oil controlled by the heater is electrically heated, and can also be various heat exchangers.
The application also discloses some embodiments, the heater is a first heat exchanger 11, and the air conditioner comprises a second heat exchanger 12; the first heat exchanger 11 is communicated with the second heat exchanger 12 to form a first circulation flow path; the second heat exchanger 12 is configured to heat the first heat exchange medium in the first circulation flow path, that is, the first heat exchange medium heated by the bed 2 is heated in the first heat exchanger 11. The first heat exchange medium can heat the bed 2 through the first heat exchanger 11, when flowing to the first heat exchanger 11, the first heat exchange medium exchanges heat with the bed 2 to heat the bed 2, the heated first heat exchange medium flows into the second heat exchanger 12, the second heat exchanger 12 heats the first heat exchange medium, and the heated first heat exchange medium flows into the first heat exchanger 11 again to heat the bed 2 and flows circularly in sequence. The second heat exchanger 12 may heat the first heat exchange medium in such a manner that a medium with a higher temperature exists in the second heat exchanger 12, or may be electrically heated or heated in another manner.
The application also discloses some embodiments, the air conditioner further comprises a compressor 3, a third heat exchanger 13 and a throttling device 4; the compressor 3, the second heat exchanger 12, the throttling device 4 and the third heat exchanger 13 are connected to form a second circulation flow path; the second heat exchange medium and the first heat exchange medium compressed by the compressor 3 can exchange heat in the second heat exchanger 12 to heat the first heat exchange medium heated by the bed 2. The second heat exchange medium with high temperature and high pressure flowing out from the outlet of the compressor 3 enters the second heat exchanger 12 to heat the first heat exchange medium after heating the bed 2. And after the second heat exchange medium exchanges heat with the first heat exchange medium, the second heat exchange medium sequentially flows into the throttling device 4, the third heat exchanger 13 and the inlet of the compressor 3 to enter the compressor 3 for recompression and sequential circulation. The second heat exchange medium is a refrigerant.
The present application also discloses some embodiments, the air conditioner further comprises a fourth heat exchanger 14; the compressor 3, the third heat exchanger 13, the throttling device 4 and the fourth heat exchanger 14 are connected to form a third circulation flow path, and the third circulation flow path is used for reducing the air temperature in the room where the air conditioner is located or defrosting the third heat exchanger 13. When the air conditioner performs cooling in summer or defrosting in winter, the cooling medium compressed by the compressor 3 circularly flows in the third heat exchanger 13, the throttling device 4 and the fourth heat exchanger 14 in sequence to realize the cooling effect.
The third circulation flow path and the second circulation flow path share the compressor 3, the expansion device 4, and the third heat exchanger 13. But differs in that when the compressor 3, the throttling means 4 and the third heat exchanger 13 are in the second circulation flow path, the compressor 3 outlet is connected to the second heat exchanger 12 to enable the high-temperature and high-pressure second heat exchange medium to heat the first heat exchange medium.
In the third circulation flow path, the outlet of the compressor 3 is connected with a third heat exchanger 13, and then is sequentially connected with the throttling device 4 and a fourth heat exchanger 14, at this time, the third heat exchanger 13 is an outdoor heat exchanger, the third heat exchanger 13 is correspondingly provided with a first fan 131, the fourth heat exchanger 14 is an indoor heat exchanger, and a second fan 141 is arranged at a position corresponding to the fourth heat exchanger 14. When the air conditioner is refrigerating in summer, the first fan 131 is turned on so that it can forcibly convectively release heat to the environment outside the vehicle; the second fan 141 is also turned on and is capable of blowing the cooling capacity of the fourth heat exchanger 14 into the room to lower the temperature of the air in the environment where the air conditioner is located. And, during the defrosting in winter, both the first fan 131 and the second fan 141 are turned off.
The application also discloses some embodiments, the air conditioner further comprises a first switching mechanism; the first switching mechanism is used for switching the air conditioner between the heat exchange state and the refrigeration state. In summer, the third circulation flow path is communicated to reduce the temperature of the air in the environment where the air conditioner is located; at this time, the second circulation flow path is disconnected, that is, the second heat exchanger 12 stops heating the first heat exchange medium, and the sleeper cannot be heated, so that the environment is kept cool. And in winter, second circulation flow path intercommunication, second heat exchanger 12 carries out circulation heating to first heat transfer medium, and then first heat exchanger 11 can heat the sleeping berth this moment, can satisfy user's heating demand. The heat exchange state in this application means that the second heat exchanger 12 heats the first heat exchange medium in a heat exchange manner, and further, the bed 2 is heated.
The present application also discloses some embodiments, the first switching mechanism comprises a first three-way valve 71, the first three-way valve 71 comprising an a1 port, a B1 port, and a C1 port; the port A1 is communicated with the third heat exchanger 13, and the port B1 is communicated with the outlet of the compressor 3; the port C1 is communicated to the inlet of the compressor 3; further, a port C1 is communicated with a connecting pipeline of the fourth heat exchanger 14 and the inlet of the compressor 3; two of the three ports are communicated by the action of the valve core in the first three-way valve 71, so that the air conditioner is switched between a heating state and a cooling state.
The present application also discloses some embodiments, the first switching mechanism comprises a second three-way valve 72, the second three-way valve 72 comprising an a2 port, a B2 port, and a C2 port; the port A2 is communicated with the throttling device 4, and the port B2 is communicated with the fourth heat exchanger 14; the port C2 is communicated with the second heat exchanger 12, and two of the three ports are communicated by the action of the valve core in the second three-way valve 72, so that the air conditioner is switched between a heating state and a cooling state. The third heat exchanger 13 comprises a first port and a second port, the first port of the third heat exchanger 13 is communicated with the first end of the throttling device 4, and the second port of the third heat exchanger 13 is communicated with the port A1; the fourth heat exchanger 14 comprises a third port and a fourth port, the third port is communicated to the inlet of the compressor 3 through a connecting pipeline, and meanwhile, a port C1 of the first three-way valve 71 is communicated to the pipeline; the fourth port of the fourth heat exchanger 14 is communicated to the port B2 of the second three-way valve 72; the a2 port communicates with the second end of the restriction device 4.
The application also discloses embodiments, wherein the first heat exchanger 11 is arranged at the bottom of the bed 2; the first heat exchanger 11 includes a heat exchanger body 111 and a phase change energy storage material 112, and the phase change energy storage material 112 is disposed outside the heat exchanger body 111. Namely, the first heat exchanger 11 is arranged at the bottom of the bed 2, and the phase change energy storage material 112 is arranged between the heat exchanger body 111 and the bed 2. Further, the first heat exchanger 11 further comprises a heat insulation layer 113, a heat conduction part 114, a first heat exchange medium inlet 115 and a first heat exchange medium outlet 116; the heat insulating layer 113 is arranged at the bottom and the side face of the heat exchanger body 111, the heat conducting portion 114 is arranged at the top of the heat exchanger body 111, namely, between the heat exchanger and the bed 2, the heat conducting portion 114 is located at the upper end of the phase change energy storage material 112, when the air conditioner defrosts in winter, the air conditioner stops heating the bed 2, the phase change energy storage material 112 can maintain the temperature of the bed 2 at the moment, and discomfort caused by temperature reduction caused by the defrosting process is avoided.
The present application also discloses embodiments wherein the first heat exchanger 11 is in communication with an external engine heat sink 6 to form a fourth circulation flow path. The external engine can be an engine heat dissipation water tank of a freight truck and the like, and the bed 2 is preheated by using waste heat of the engine during driving, so that the electric quantity of the storage battery is saved, and the economical efficiency of the product is improved. The fourth circulation flow path and the first circulation flow path share a pump body 5, the pump body 5 is communicated with the first heat exchanger 11 and is used for driving the first heat exchange medium to flow in the first circulation flow path or circulate, and the pump body 5 can be a water pump. At the moment, the phase-change energy storage material 112 can also store the waste heat of the engine during driving and preheat the bed 2, so that the electric quantity of the storage battery is saved, and the economical efficiency of the product is improved; in addition, when the outdoor heat exchanger of the air conditioner is defrosted in winter, the phase change energy storage material 112 can maintain the temperature of the bed 2, and discomfort caused by temperature reduction in the defrosting process is avoided. The application is more energy-saving, and the product economy is improved. The first heat exchanger 11 is arranged right below the bed plate; the outer layer is a thermal insulation layer 113 except the top surface,
the heat loss in other directions except the top surface is reduced; the top surface is a heat-conducting clapboard, which is convenient for heat to be transferred to the upper bed 2; heat exchange coil pipes are uniformly laid in the heater for circulating cooling liquid; the phase change energy storage material 112 is filled in the space around the heat exchange coil.
The application also discloses some embodiments, the air conditioner further comprises a second switching mechanism; the first circulation flow path is communicated, and the fourth circulation flow path is disconnected to be in a heating state; the first circulation flow path is disconnected, the fourth circulation flow path is connected to be in a preheating state, and the second switching mechanism is used for switching the air conditioner between the heating state and the preheating state.
The present application also discloses some embodiments, the second switching mechanism comprises a third three-way valve 73, the third three-way valve 73 comprising an a3 port, a B3 port, and a C3 port; the port A3 is communicated with the first heat exchanger 11, and the port B3 is communicated with the second heat exchanger 12; the C3 port communicates with the engine heat sink 6. Two of the three ports are communicated by the movement of the valve core in the third three-way valve 73, so that the air conditioner is switched between a heating state and a preheating state. The air conditioner is a parking air conditioner. The engine heat dissipation structure 6 is an engine heat dissipation water tank for dissipating heat from the engine.
The second circulation flow path and the third circulation flow path are both refrigerant circulation flow paths, and the compressor 3 in the present application is an electric compressor 3 driven by an on-vehicle battery; in the third circulation flow path: the third heat exchanger 13 for providing heat exchange between the refrigerant and the environment outside the vehicle is a condenser, and the first fan 131 is a condensing fan; the fourth heat exchanger 14 for providing heat exchange between the refrigerant and the environment in the vehicle is an evaporator, and the second fan 141 is an evaporation fan. A second heat exchanger 12 for providing heat exchange between the refrigerant and the cooling liquid; the throttling device 4 is a throttling valve; these components are all connected by refrigerant lines.
The first circulation flow path and the fourth circulation flow path are cooling liquid circulation flow paths, and the cooling liquid circulation system is composed of a first heat exchanger 11, an engine heat radiation water tank, a third three-way valve 73, a water pump and a cooling liquid pipeline for connecting the components; the refrigerant circulation system and the coolant circulation system are connected by two coolant lines on the coolant side of the second heat exchanger 12.
According to an embodiment of the application, a freight truck is provided, which comprises an air conditioner, wherein the air conditioner is the air conditioner. The freight truck may be a freight truck, or a freight truck such as a train or a sleeper.
According to an embodiment of the present application, there is provided a control method of the air conditioner as described above, including the steps of: controlling the air conditioner to enter a heating state; the step of controlling the air conditioner to enter the heating state comprises the following steps: and controlling the heater to heat the bed.
The application also discloses that when the heater is the first heat exchanger 11, the air conditioner comprises a second heat exchanger 12; when the first heat exchanger 11 and the second heat exchanger 12 are communicated to form a first circulation flow path, the step of controlling the air conditioner to enter a heating state comprises the following steps: the first circulation flow path communication is controlled. Then make second heat exchanger 12 can last the heating to the first heat transfer medium after bed 2 heats in first heat exchanger 11, and the first heat transfer medium in first heat exchanger 11 also can last to bed 2 heat, and then improves user's travelling comfort.
The application also discloses some embodiments, when the air conditioner further includes a compressor 3, a third heat exchanger 13 and a throttling device 4, and the compressor 3, the second heat exchanger 12, the throttling device 4 and the third heat exchanger 13 are connected to form a second circulation flow path, the step of controlling the air conditioner to enter a heating state further includes the following steps: controlling the second circulation flow path to be communicated; the second circulation flow path is communicated, so that the first heat exchange medium can be heated by the high-temperature and high-pressure second heat exchange medium compressed by the compressor 3.
The application also discloses some embodiments, when the air conditioner includes the compressor 3, the third heat exchanger 13, the throttling device 4 and the fourth heat exchanger 14, and the compressor 3, the third heat exchanger 13, the throttling device 4 and the fourth heat exchanger 14 are connected to form a third circulation flow path, the step of controlling the air conditioner to enter the heating state further includes: controlling the third circulation flow path to be disconnected; i.e. so that the air conditioner is no longer refrigerated.
The application also discloses some embodiments, when the first heat exchanger 11 is communicated with the external engine heat dissipation structure 6 to form a fourth circulation flow path, the step of controlling the air conditioner to enter the heating state further comprises the following steps: the fourth circulation flow path is controlled to be disconnected, so that the bed 2 does not need to be preheated, and the heating temperature is higher and more comfortable.
The present application also discloses some embodiments, when the air conditioner further includes a first switching mechanism including a first three-way valve 71, the first three-way valve 71 including an a1 port, a B1 port, and a C1 port, the controlling the air conditioner to enter the heating state further includes the steps of: the control A1 port communicates with the C1 port.
The present application also discloses embodiments, when the air conditioner further includes a first switching mechanism including a second three-way valve 72, the second three-way valve 72 including an a2 port, a B2 port, and a C2 port, controlling the air conditioner to enter the heating state further includes the steps of: the control A2 port communicates with the C2 port.
Also disclosed are some embodiments, when the air conditioner further includes a second switching mechanism, the second switching mechanism including a third three-way valve 73, the third three-way valve 73 including an a3 port, a B3 port, and a C3 port, controlling the air conditioner to enter the heating state further includes the steps of: the control A3 port and the B3 port communicate. At this time, the second circulation flow path is communicated, and the second heat exchanger 12 can circulate and heat the first heat exchange medium, and can further continuously heat the bed 2.
The present application also discloses some embodiments, including the steps of: controlling the air conditioner to enter a refrigeration and/or defrosting state;
when the air conditioner comprises the compressor 3, the third heat exchanger 13, the throttling device 4 and the fourth heat exchanger 14, and the compressor 3, the third heat exchanger 13, the throttling device 4 and the fourth heat exchanger 14 are connected to form a third circulation flow path, the step of controlling the air conditioner to enter a refrigerating and/or defrosting state further comprises the following steps: the third circulation flow path communication is controlled. When the air conditioner is cooling in summer, the first fan 131 is turned on so that it can forcibly convectively release heat to the outside environment; the second fan 141 is also turned on and is capable of blowing the cooling capacity of the fourth heat exchanger 14 into the room to lower the temperature of the air in the environment where the air conditioner is located. And, during the defrosting in winter, both the first fan 131 and the second fan 141 are turned off.
The application also discloses some embodiments, controlling the air conditioner to enter the refrigeration and/or defrosting state further comprises the following steps:
when the air conditioner further includes a first switching mechanism including a first three-way valve 71, the first three-way valve 71 including an a1 port, a B1 port, and a C1 port, controlling the air conditioner to enter the cooling and/or defrosting state further includes the steps of: controlling the communication between the A1 port and the B1 port;
the present application also discloses embodiments, when the air conditioner further includes a first switching mechanism including a second three-way valve 72, the second three-way valve 72 including an a2 port, a B2 port, and a C2 port, controlling the air conditioner to enter the cooling and/or defrosting state further includes the steps of: the control A2 port and the B2 port communicate.
The application also discloses some embodiments, and the control method of the air conditioner further comprises the following steps: controlling the air conditioner to enter a preheating mode;
when the first heat exchanger 11 is communicated with the external engine heat dissipation structure 6 to form a fourth circulation flow path, the step of controlling the air conditioner to enter the preheating state further comprises the following steps: the fourth circulation flow path communication is controlled. The bed 2 can be preheated by the heat dissipation of the engine, and energy can be saved.
The present application also discloses some embodiments, the air conditioner further comprises a second switching mechanism, the second switching mechanism comprises a third three-way valve 73, and when the third three-way valve 73 comprises an a3 port, a B3 port and a C3 port, the step of controlling the air conditioner to enter the cooling and/or defrosting state further comprises the steps of: the control A3 port communicates with the C3 port.
In the present application, the working process of the air conditioner is as follows:
1. winter sleeper heating cycle
As shown in fig. 1, a1 of the first three-way valve 71 communicates with C1, a2 of the second three-way valve 72 communicates with C2, and A3 of the third three-way valve 73 communicates with B3;
the low-temperature low-pressure gaseous refrigerant enters the compressor 3, is compressed into a high-temperature high-pressure gaseous refrigerant, and enters the second heat exchanger 12 through the first three-way valve 71; the high-temperature high-pressure gas refrigerant releases heat to the low-temperature cooling liquid through the second heat exchanger 12 and becomes a normal-temperature high-pressure subcooled liquid refrigerant; the normal-temperature high-pressure supercooled liquid refrigerant is throttled by the throttling device 4, changed into a low-temperature low-pressure gas-liquid two-phase refrigerant, and enters the third heat exchanger 13 through the second three-way valve 72; the low-temperature low-pressure gas-liquid two-phase refrigerant absorbs heat by forced convection from the outside environment through the first fan 131, becomes a low-temperature low-pressure gaseous refrigerant, and then flows into the compressor 3, thereby completing the refrigerant cycle in the sleeper heating cycle in winter.
Meanwhile, the low-temperature coolant is pumped into the second heat exchanger 12 by a water pump, absorbs heat from the high-temperature refrigerant, and the temperature rises; the high-temperature cooling liquid enters the first heat exchanger 11 through the third three-way valve 73, heat is transferred to the bed 2, and the temperature is reduced; the low-temperature coolant flows back to the pump body 5, thereby completing the coolant circulation in the winter sleeper heating cycle.
2. Summer air-conditioning refrigeration method
As shown in fig. 2, a1 of the first three-way valve 71 communicates with B1, a2 of the second three-way valve 72 communicates with B2, and A3 of the third three-way valve 73 communicates with B3;
the low-temperature low-pressure gas refrigerant enters the compressor 3, is compressed into a high-temperature high-pressure gas refrigerant, and enters the third heat exchanger 13 through the first three-way valve 71; the high-temperature high-pressure gaseous refrigerant is subjected to forced convection heat release on the environment outside the vehicle through the first fan 131, and becomes a normal-temperature high-pressure supercooled liquid refrigerant; the normal-temperature high-pressure subcooled liquid refrigerant is throttled by the throttling device 4, changed into a low-temperature low-pressure gas-liquid two-phase refrigerant, and enters the fourth heat exchanger 14 through the second three-way valve 72; the low-temperature low-pressure gas-liquid two-phase refrigerant is forced to convect and absorb heat from the environment in the vehicle through the second fan 141, so that the space of the cab is cooled; the low-temperature and low-pressure gaseous refrigerant flowing out of the fourth heat exchanger 14 flows into the compressor 3 again, thereby completing the refrigeration cycle of the air conditioner.
The bed 2 does not need to be heated in summer, so the cooling liquid circulation system does not participate in the work.
3. Defrosting cycle in winter
After the sleeper heating cycle operates for a period of time in winter, the surface of the condenser, which is used as a low-pressure side heat exchanger in the refrigerant cycle, can gradually condense frost, so that the heat exchange effect is attenuated, and the operating efficiency of the air conditioning system is affected, therefore, the defrosting cycle needs to be periodically performed, and the frost on the surface of the condenser is melted.
The defrosting circulation system is connected in the same way as the summer air-conditioning refrigeration cycle, as shown in figure 1;
the low-temperature low-pressure gas refrigerant enters the compressor 3, is compressed into a high-temperature high-pressure gas refrigerant, and enters the third heat exchanger 13 through the first three-way valve 71; at this time, the first fan 131 does not work, and the high-temperature and high-pressure gaseous refrigerant transfers heat to the frost on the surface of the third heat exchanger 13 in a heat conduction manner to melt and flow away the frost, so that the frost is changed into a normal-temperature and high-pressure super-cooled liquid refrigerant; the high-temperature high-pressure subcooled liquid refrigerant is throttled by the throttling device 4, changed into a low-temperature low-pressure gas-liquid two-phase refrigerant, and enters the fourth heat exchanger 14 through the second three-way valve 72; in order to prevent cold air from blowing to the lower part of the cab, at this time, the second fan 141 does not work, and the low-temperature low-pressure gas-liquid two-phase refrigerant naturally exchanges heat with ambient air only by means of the fourth heat exchanger 14 to become a low-temperature low-pressure gas refrigerant, and then flows into the compressor 3, so that the defrosting cycle in winter is completed.
The water pump does not work in the defrosting cycle process, and the temperature of the bed 2 is maintained by means of the heat stored in the phase change energy storage material 112 in the first heat exchanger 11, so that the temperature of the bed 2 is not reduced rapidly due to the defrosting cycle of the refrigerant system, and the discomfort of a human body is avoided.
4. Winter sleeping berth preheating cycle
When the freight truck runs in winter, the sleeper preheating function can be started, and the bed 2 is preheated by using the waste heat of the engine when the freight truck runs. As shown in fig. 3, a1 of the first three-way valve 71 communicates with C1, a2 of the second three-way valve 72 communicates with C2, and A3 of the three-way valve 3 communicates with C3;
the low-temperature cooling liquid is sent into a heat dissipation water tank of the engine by the heat exchanger body 111, waste heat generated by the operation of the engine is absorbed, and the temperature is increased; the high-temperature cooling liquid enters the first heat exchanger 11 through the third three-way valve 73, heat is transferred to the bed 2, and the temperature is reduced; and the low-temperature cooling liquid flows back to the water pump, so that the cooling liquid circulation in the sleeping berth preheating circulation in winter is completed.
The refrigerant circulating system does not participate in the work when the freight truck runs in winter.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. An air conditioner, wherein the air conditioner is configured to regulate a temperature of an environment in which the air conditioner is located; the air conditioner comprises a heater for heating the bed (2); the heater is a first heat exchanger (11), and the first heat exchanger (11) is arranged at the bottom of the bed (2); the air conditioner comprises a second heat exchanger (12); the first heat exchanger (11) is communicated with the second heat exchanger (12) to form a first circulation flow path; the second heat exchanger (12) is used for heating the first heat exchange medium in the first circulation flow path; and then the first heat exchanger (11) is heated to realize the heating of the bed (2).
2. The air conditioner according to claim 1, further comprising a compressor (3), a third heat exchanger (13) and a throttling device (4); the compressor (3), the second heat exchanger (12), the throttling device (4) and the third heat exchanger (13) are connected to form a second circulation flow path; the second heat exchange medium compressed by the compressor (3) and the first heat exchange medium can exchange heat in the second heat exchanger (12).
3. The air conditioner according to claim 2, further comprising a fourth heat exchanger (14); the compressor (3), the third heat exchanger (13), the throttling device (4) and the fourth heat exchanger (14) are connected to form a third circulation flow path, and the third circulation flow path is used for reducing the air temperature in the room where the air conditioner is located or defrosting the third heat exchanger (13).
4. The air conditioner according to claim 3, further comprising a first switching mechanism; the third circulation flow path is communicated, the second circulation flow path is disconnected to be in a refrigeration state, the third circulation flow path is disconnected, the second circulation flow path is communicated to be in a heat exchange state, and the first switching mechanism is used for switching the air conditioner between the heat exchange state and the refrigeration state.
5. The air conditioner as claimed in claim 4, wherein the first switching mechanism includes a first three-way valve (71), the first three-way valve (71) including an A1 port, a B1 port and a C1 port; the A1 port is communicated with the third heat exchanger (13), and the B1 port is communicated with the outlet of the compressor (3); the C1 port is communicated to the inlet of the compressor (3);
and/or the first switching mechanism comprises a second three-way valve (72), the second three-way valve (72) comprising an a2 port, a B2 port, and a C2 port; the A2 port is communicated with the throttling device (4), and the B2 port is communicated with the fourth heat exchanger (14); the C2 port is communicated with the second heat exchanger (12).
6. The air conditioner as claimed in claim 1, wherein the first heat exchanger (11) includes a heat exchanger body (111) and a phase change energy storage material (112), the phase change energy storage material (112) being disposed outside the heat exchanger body (111).
7. The air conditioner according to claim 1, wherein the first heat exchanger (11) communicates with an external engine heat dissipation structure (6) to form a fourth circulation flow path.
8. The air conditioner of claim 7, further comprising a second switching mechanism; the first circulation flow path is communicated, and the fourth circulation flow path is disconnected to be in a heating state; the first circulation flow path is disconnected, the fourth circulation flow path is communicated to be in a preheating state, and the second switching mechanism is used for switching the air conditioner between the heating state and the preheating state.
9. The air conditioner according to claim 8, wherein the second switching mechanism includes a third three-way valve (73), the third three-way valve (73) including an a3 port, a B3 port, and a C3 port; the A3 port is communicated with the first heat exchanger (11), and the B3 port is communicated with the second heat exchanger (12); the C3 port is communicated with the engine heat dissipation structure (6).
10. A freight truck comprising an air conditioner, characterized in that the air conditioner is as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122165976.2U CN217347410U (en) | 2021-09-08 | 2021-09-08 | Air conditioner and freight truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122165976.2U CN217347410U (en) | 2021-09-08 | 2021-09-08 | Air conditioner and freight truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217347410U true CN217347410U (en) | 2022-09-02 |
Family
ID=83009348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122165976.2U Active CN217347410U (en) | 2021-09-08 | 2021-09-08 | Air conditioner and freight truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217347410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118144509A (en) * | 2024-05-10 | 2024-06-07 | 徐州徐工汽车制造有限公司 | Air conditioning system, pure electric truck, control method, control device and medium |
-
2021
- 2021-09-08 CN CN202122165976.2U patent/CN217347410U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118144509A (en) * | 2024-05-10 | 2024-06-07 | 徐州徐工汽车制造有限公司 | Air conditioning system, pure electric truck, control method, control device and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021083067A1 (en) | Thermal management system | |
| CN111251802B (en) | Thermal management system of vehicle and vehicle | |
| CN213007493U (en) | Electric automobile and thermal management system thereof | |
| CN110422082A (en) | A kind of hybrid vehicle integrated heat management system and its control method | |
| CN210821724U (en) | Thermal management system and new energy automobile thereof | |
| JP4298990B2 (en) | Refrigeration equipment using carbon dioxide as refrigerant | |
| CN112428767B (en) | Vehicle thermal management system | |
| CN109398032A (en) | New-energy automobile High Efficiency Thermal management system | |
| CN109774418B (en) | Air conditioning system, control method thereof and automobile | |
| CN211592161U (en) | Whole car thermal management system of integrated indirect heat pump for electric automobile | |
| CN217347410U (en) | Air conditioner and freight truck | |
| CN111251801B (en) | Thermal management system of vehicle and vehicle | |
| CN112693363B (en) | Whole car thermal management system of pure electric truck | |
| CN212194994U (en) | Vehicle thermal management system | |
| CN109910550A (en) | Thermal management system, control method thereof and automobile | |
| CN114388924B (en) | Electric motor car thermal management system and electric motor car | |
| CN112297757B (en) | Electric automobile thermal management system with concentrated circulation of cooling liquid and application method thereof | |
| CN110186222B (en) | Heat pump air conditioning system and vehicle | |
| CN216659502U (en) | Heat pump air conditioner heat management system and vehicle | |
| CN215971011U (en) | Electric vehicle energy flow heat management system | |
| CN215675899U (en) | Heat pump temperature control system and vehicle | |
| CN113650476A (en) | Air conditioner, control method thereof and vehicle | |
| CN210554035U (en) | Heat pump system applying combination valve | |
| CN113635733A (en) | Electric vehicle energy flow heat management system | |
| CN113459767A (en) | Electric motor car thermal management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |