CN111284304A - Air conditioning device with condensation and evaporation coupling - Google Patents
Air conditioning device with condensation and evaporation coupling Download PDFInfo
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- CN111284304A CN111284304A CN202010230126.3A CN202010230126A CN111284304A CN 111284304 A CN111284304 A CN 111284304A CN 202010230126 A CN202010230126 A CN 202010230126A CN 111284304 A CN111284304 A CN 111284304A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 27
- 238000001704 evaporation Methods 0.000 title claims abstract description 20
- 238000009833 condensation Methods 0.000 title claims abstract description 16
- 230000005494 condensation Effects 0.000 title claims abstract description 16
- 230000008020 evaporation Effects 0.000 title claims abstract description 12
- 230000008878 coupling Effects 0.000 title claims description 5
- 238000010168 coupling process Methods 0.000 title claims description 5
- 238000005859 coupling reaction Methods 0.000 title claims description 5
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000005057 refrigeration Methods 0.000 claims abstract description 52
- 238000009423 ventilation Methods 0.000 claims abstract description 8
- 230000001012 protector Effects 0.000 claims description 23
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary 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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an air conditioning device with condensation and evaporation coupled together, which comprises a refrigerating system A, a refrigerating system B, a ventilating system and an electric control system. Wherein: the refrigeration system A comprises a compressor A, a condenser A, a liquid storage device A, a filter A, a thermostatic expansion valve A, an evaporator AI, an electromagnetic valve, an electronic expansion valve, an evaporator AII and a gas-liquid separator A; the compressor B, the condenser B, the liquid storage device B, the filter B, the thermostatic expansion valve B, the evaporator B and the gas-liquid separator B form a refrigerating system B; the axial flow fan and the centrifugal fan form a ventilation system; the power supply and the control unit form an electric control system; the parking power is supplied to the centrifugal fan and the compressor A through the control unit; the driving direct-current power supply supplies power to the centrifugal fan through the control unit, and the driving engine shaft drives the compressor B and the axial-flow fan to work. The invention realizes the non-driven condensation side heat dissipation of the parking axial flow fan.
Description
Technical Field
The invention relates to the field of vehicle-mounted air conditioning equipment, in particular to an air conditioning device with condensation and evaporation coupled together.
Background
The special air conditioner is matched with the special mobile vehicle, has the functions of refrigeration, heating and the like, and provides a good temperature and humidity environment for equipment and personnel in the vehicle. Because the moving special vehicle is motor-driven and has the characteristics after all day, the special vehicle provides various different powers (a direct current power supply, an engine shaft power take-off and an alternating current power supply), and the vehicle air conditioner can only provide the direct current power supply and the engine shaft power take-off during running and can only provide the alternating current power supply during parking, the vehicle air conditioner is required to work under various power supply systems.
If a double-compressor double-system mode is adopted to realize refrigeration, when the engine shaft takes power, the compressor and the axial flow fan are driven by a belt to refrigerate; when parking alternating current power supply, because vehicle space restriction can't provide the space of alternating current power supply's axial fan installation, consequently when alternating current power supply, the air conditioning equipment condensation side can only seek other mode to the external heat dissipation, based on this kind of power supply mode, how to realize alternating current power supply and engine axle take off power and realize the refrigeration, has provided new requirement to air conditioning equipment, air conditioning equipment adopts the vapour compression formula to realize the refrigeration, the part that needs the drive is compressor, centrifugal fan, axial fan, electrical control system. The compressor can meet the double power take-off driving of alternating current and an engine due to the double compressors, the centrifugal fan adopts a fan powered by direct current although the centrifugal fan is the single fan, the centrifugal fan can work when the centrifugal fan is driven by two power take-off driving modes through power supply conversion, and the axial flow fan can not work when the axial flow fan is powered by alternating current due to the fact that the axial flow fan is driven by the engine shaft through a belt.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an air conditioning device which has the advantages of simple structure, easiness in implementation, fewer devices and components, high efficiency, convenience in maintenance and high efficiency, and can adapt to condensation and evaporation coupling of alternating current power supply and engine shaft power taking.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
air conditioning apparatus with condensing-evaporating coupling, characterized in that: including refrigerating system A, refrigerating system B, ventilation system, wherein:
the refrigerating system A comprises a compressor A, a condenser A, a liquid storage device A, a filter A, a thermostatic expansion valve A, an evaporator AI, an electromagnetic valve, an electronic expansion valve, an evaporator AII and a gas-liquid separator A, wherein the outlet end of the compressor A is connected with one end of the condenser A through a pipeline, the other end of the condenser A is communicated with the interior of the liquid storage device A through a pipeline, the interior of the liquid storage device A is also communicated with one end of the filter A through a pipeline, the other end of the filter A is connected with two pipelines, one pipeline is connected with the inlet end of the thermostatic expansion valve A, the outlet end of the thermostatic expansion valve A is connected with one end of the evaporator AI through a pipeline, the second pipeline connected with the other end of the filter A is connected with the inlet end of the electromagnetic valve, the outlet end of the electromagnetic valve is connected with the, the other ends of the evaporator AI and the evaporator AII are converged by a pipeline and connected with the inlet end of the gas-liquid separator A, and the outlet end of the gas-liquid separator A is connected with the inlet end of the compressor A by a pipeline, so that a refrigeration cycle loop of the refrigeration system A is formed;
the refrigerating system B comprises a compressor B, a condenser B, a liquid storage device B, a filter B, a thermal expansion valve B, an evaporator B and a gas-liquid separator B; the outlet end of the compressor B is connected with one end of the condenser B through a pipeline, the other end of the condenser B is communicated with the interior of a liquid storage device B through a pipeline, the interior of the liquid storage device B is also communicated with one end of a filter B through a pipeline, the other end of the filter B is connected with the inlet end of a thermal expansion valve B through a pipeline, the outlet end of the thermal expansion valve B is connected with one end of an evaporator B through a pipeline, the other end of the evaporator B is connected with the inlet end of a gas-liquid separator B through a pipeline, the outlet end of the gas-liquid separator B is connected with the inlet end of the compressor B through a pipeline, and therefore a refrigeration;
in the refrigeration system A and the refrigeration system B, heat exchange between a refrigeration circulation loop in the refrigeration system A and a refrigeration circulation loop in the refrigeration system B is realized by a condenser A, a condenser B, an evaporator AI, an evaporator AII and an evaporator B;
the ventilation system comprises an axial flow fan and a centrifugal fan, the condenser A, the evaporator AII and the condenser B share the axial flow fan, and the evaporator AI and the evaporator B share the centrifugal fan to supply air to the indoor space.
The air conditioning device with the condensation and evaporation coupled together is characterized in that: the condenser a is coupled with the evaporator AII, the condenser B to share the axial fan.
The air conditioning device with the condensation and evaporation coupled together is characterized in that: the evaporator AI and the evaporator B are coupled together to share a centrifugal fan.
The air conditioning device with the condensation and evaporation coupled together is characterized in that: in the refrigerating system A, a pipeline between the gas-liquid separator A and the compressor A is also communicated by a bypass and connected with a fluorine filling nozzle A.
The air conditioning device with the condensation and evaporation coupled together is characterized in that: in the refrigerating system B, a pipeline between the gas-liquid separator B and the compressor B is also communicated by a bypass and connected with a fluorine filling nozzle B.
The air conditioning device with the condensation and evaporation coupled together is characterized in that: the air conditioner also comprises an electric control system consisting of a power supply and a control unit, wherein the power supply is connected to the compressor A, the compressor B, the axial flow fan and the centrifugal fan through the control unit for power supply.
The air conditioning device with the condensation and evaporation coupled together is characterized in that: the protection system comprises a temperature sensor, a low-pressure protector A and a low-pressure protector B, wherein the temperature sensor is arranged at the air inlet of the coupled evaporator AI and the evaporator B to monitor the air inlet temperature of the evaporator, a bypass of the low-pressure protector A is communicated to a pipeline between the gas-liquid separator A and the compressor A, and a bypass of the low-pressure protector B is communicated to a pipeline between the gas-liquid separator B and the compressor B;
the temperature sensor, the low-voltage protector A and the low-voltage protector B are respectively connected with a control unit in the electric control system, and the control unit controls a compressor A, B, an axial flow fan and a centrifugal fan in the refrigeration system A, B based on signals of the temperature sensor and the low-voltage protector A, B.
The invention has the advantages that:
(1) and selecting the refrigerating system to be started according to the driving and parking modes.
(2) The system power supply is determined to be switched on according to the temperature of the evaporated inlet air, the control is stable, the energy is saved, and the normal use of the air conditioner is ensured;
(3) when the parking refrigeration system is started, the condensation heat dissipation balance is adjusted according to the electronic expansion valve, so that the energy efficiency ratio is improved, and the energy saving is achieved;
(4) the heat dissipation of the condensation side in the alternating current power supply refrigeration system during parking is effectively realized, and the all-weather air cooling of the mobile vehicle is met.
The air conditioner has the advantages of simple structure, easiness in manufacturing, low cost, high efficiency, convenience in installation, low failure rate, high reliability and convenience in maintenance, and can efficiently realize air conditioning. In addition, the refrigeration system can be effectively protected, safety and reliability are realized, and energy is saved.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, the air conditioning device with condensing and evaporating coupled together includes a refrigeration system a, a refrigeration system B, a ventilation system, and an electric control system, wherein:
the refrigeration system A comprises a compressor A1, a condenser A2, an accumulator A3, a filter A4, a thermal expansion valve A5, an evaporator AI6, an electromagnetic valve 7, an electronic expansion valve 8, an evaporator AII9 and a gas-liquid separator A10;
the refrigerating system B comprises a compressor B11, a condenser B12, an accumulator B13, a filter B14, a thermal expansion valve B15, an evaporator B16 and a gas-liquid separator B25;
a refrigeration cycle loop is formed by a compressor A1, a condenser A2, an accumulator A3, a filter A4, a thermostatic expansion valve A5, an evaporator AI6, an electromagnetic valve 7, an electronic expansion valve 8, an evaporator AII9 and a gas-liquid separator A10 in the refrigeration system A, a refrigeration cycle loop is formed by a compressor B11, a condenser B12, an accumulator B13, a filter B14, a thermostatic expansion valve B15 and an evaporator B16 in the refrigeration system B and a gas-liquid separator B25 in the refrigeration system B, and heat exchange between the refrigeration cycle loop of the refrigeration system A and the refrigeration cycle loop of the refrigeration system B is realized by a condenser A2, a condenser B12, an evaporator AI6, an evaporator AII9 and an evaporator B16;
the ventilation system comprises an axial fan 17 for a condenser A2, an evaporator AII9 and a condenser B12 in a refrigeration system A, and a centrifugal fan 18 for an evaporator AI6 and an evaporator B16 for supplying air to the indoor;
the electric control system comprises a power supply and a control unit, wherein the power supply is connected with the compressor A1, the compressor B11, the axial flow fan 17 and the centrifugal fan 18 through the control unit in a power supply mode.
The refrigerating system A comprises a compressor A1, a condenser A2, a liquid accumulator A3, a filter A4, a thermostatic expansion valve A5, an evaporator AI6, a solenoid valve 7, an electronic expansion valve 8, an evaporator AII9 and a gas-liquid separator A10, wherein the outlet end of the compressor A1 is connected with one end of the condenser A2 through a pipeline, the other end of the condenser A2 is communicated with a liquid accumulator A3 through a pipeline, the liquid accumulator A3 is further connected with one end of the filter A4 through a pipeline, the filter A4 is divided into two paths through a pipeline, one path is connected with the inlet of the thermostatic expansion valve A5 through a pipeline, the outlet of the expansion valve A5 is connected with one end of the evaporator AI6 through a pipeline, the other path is communicated with the inlet end of the solenoid valve 7 through a pipeline, the outlet end of the electronic expansion valve 8 is communicated with the inlet end of the electronic expansion valve 8 through a pipeline, the outlet end of the electronic expansion valve 8 is communicated with the inlet end of the evaporator AII9 through a pipeline, the, the other end of the gas-liquid separator A10 is connected with the inlet end of a compressor A1 through a pipeline, thereby forming a refrigeration cycle loop of the refrigeration system A;
the refrigeration system B comprises a compressor B11, a condenser B12, a liquid accumulator B13, a filter B14, a thermostatic expansion valve B15, an evaporator B16 and a gas-liquid separator B25, wherein the outlet end of the compressor B11 is respectively connected with one end of the condenser B12 through a pipeline, the other end of the condenser B12 is communicated with a liquid accumulator B13 through a pipeline, the liquid accumulator B13 is connected with one end of a filter B14 through a pipeline, the other end of the filter B14 is connected with the inlet of the thermostatic expansion valve B15 through a pipeline, the outlet of the thermostatic expansion valve B15 is connected with one end of the evaporator B16 through a pipeline, the other end of the evaporator B16 is connected with the inlet of the gas-liquid separator B25 through a pipeline, and the other end of the gas-liquid separator B25 is connected with the inlet end of the compressor;
condenser a2, evaporator AII9, and condenser B12 are coupled together and together cooperate with an axial fan 17.
The evaporator AI6 and the evaporator B16 are coupled together and together cooperate with the centrifugal fan 18.
The fluorine filling nozzle A19 in the refrigeration system A is communicated to a pipeline between a gas-liquid separator A10 and a compressor A1 by a bypass.
The fluorine filling nozzle B20 in the refrigeration system B is communicated to a pipeline between the gas-liquid separator B25 and the compressor B11 by a bypass.
The protection system comprises a temperature sensor 21, a low-pressure protector A22 and a low-pressure protector B23, wherein the temperature sensor 21 is arranged at the air inlet of an evaporator AI6 and an evaporator B16 which are coupled to monitor the air inlet temperature of the evaporator, a bypass of the low-pressure protector A22 is communicated to a pipeline between an air-liquid separator A10 and a compressor A1, and a bypass of the low-pressure protector B23 is communicated to a pipeline between the air-liquid separator B25 and the compressor B11;
the temperature sensor 21, the low-voltage protector A22 and the low-voltage protector B23 are respectively connected with the control unit 24, and the control unit 24 controls power supply to the compressors A1 and B11, the axial flow fan 17 and the centrifugal fan 18 in the refrigeration system A, B based on signals of the temperature sensor 21 and the low-voltage protectors A22 and B23.
The invention is further described below with reference to the accompanying drawings:
when parking is in alternating current power supply, the compressor A1 works to compress refrigerant into high-temperature high-pressure gas, the high-temperature high-pressure gas enters the condenser A2, the high-temperature high-pressure gas is cooled into liquid after being subjected to heat exchange with the evaporator AI6 and air without forced convection, the liquid enters the liquid accumulator A3, the liquid enters the thermostatic expansion valve A5 through the filter A4 in two ways, the liquid is changed into low-temperature low-pressure refrigerant after being throttled, the low-temperature low-pressure refrigerant liquid enters the evaporator AI6 for heat exchange and then is changed into gas, the other way enters the electronic expansion valve 8 through the electromagnetic valve 7 and then enters the evaporator AII9 for heat exchange, the gas from the evaporator AI6 and the evaporator AII9 passes through the gas-liquid separator A10 and then enters the compressor A1 again, the. The temperature sensor B21 monitors the temperature of the return air in the air-conditioning equipment room in real time and feeds back the temperature to the control unit 24, the control unit 24 automatically compares the return air temperature with the set temperature, when the return air temperature reaches the set temperature, the compressor A1 stops working, the refrigeration system A stops working, and the centrifugal fan 18 continues working and ventilating. When the return air pressure in the refrigeration system is low, the low-pressure protector A22 acts and the compressor A1 stops working.
When the automobile is powered by direct current during driving, the engine shaft of the automobile chassis takes power, the engine shaft drives the clutch of the compressor B11 and the axial flow fan 17 to operate, when the compressor B11 works, refrigerant is compressed into high-temperature high-pressure gas, the high-temperature high-pressure gas enters the condenser B12 to exchange heat with the condenser A2, then the high-temperature high-pressure gas is cooled into liquid, the liquid enters the liquid reservoir B13, passes through the filter B14, enters the thermal expansion valve B15, is throttled to become low-temperature low-pressure refrigerant liquid, enters the evaporator B16, and is changed into gas after exchanging heat with the evaporator AI6 to enter the compressor B11 again, the circulation is repeated, and meanwhile, the axial flow fan. The temperature sensor 21 monitors the temperature of the return air in the air conditioning equipment room in real time and feeds the temperature back to the control unit 24, the control unit 24 automatically compares the return air temperature with the set temperature, when the return air temperature is higher than the set temperature, the direct current compressor B11 and the axial flow fan 17 operate simultaneously, and the refrigeration system starts to work; when the return air temperature reaches the set temperature, the direct current compressor B11 stops working, the refrigeration system stops working, and the centrifugal fan 18 continues working for ventilation. When the return air pressure in the refrigeration system is low, the low-pressure protector B23 acts, and the compressor B11 stops working.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (7)
1. Air conditioning apparatus with condensing-evaporating coupling, characterized in that: including refrigerating system A, refrigerating system B, ventilation system, wherein:
the refrigerating system A comprises a compressor A, a condenser A, a liquid storage device A, a filter A, a thermostatic expansion valve A, an evaporator AI, an electromagnetic valve, an electronic expansion valve, an evaporator AII and a gas-liquid separator A, wherein the outlet end of the compressor A is connected with one end of the condenser A through a pipeline, the other end of the condenser A is communicated with the interior of the liquid storage device A through a pipeline, the interior of the liquid storage device A is also communicated with one end of the filter A through a pipeline, the other end of the filter A is connected with two pipelines, one pipeline is connected with the inlet end of the thermostatic expansion valve A, the outlet end of the thermostatic expansion valve A is connected with one end of the evaporator AI through a pipeline, the second pipeline connected with the other end of the filter A is connected with the inlet end of the electromagnetic valve, the outlet end of the electromagnetic valve is connected with the, the other ends of the evaporator AI and the evaporator AII are converged by a pipeline and connected with the inlet end of the gas-liquid separator A, and the outlet end of the gas-liquid separator A is connected with the inlet end of the compressor A by a pipeline, so that a refrigeration cycle loop of the refrigeration system A is formed;
the refrigerating system B comprises a compressor B, a condenser B, a liquid storage device B, a filter B, a thermal expansion valve B, an evaporator B and a gas-liquid separator B; the outlet end of the compressor B is connected with one end of the condenser B through a pipeline, the other end of the condenser B is communicated with the interior of a liquid storage device B through a pipeline, the interior of the liquid storage device B is also communicated with one end of a filter B through a pipeline, the other end of the filter B is connected with the inlet end of a thermal expansion valve B through a pipeline, the outlet end of the thermal expansion valve B is connected with one end of an evaporator B through a pipeline, the other end of the evaporator B is connected with the inlet end of a gas-liquid separator B through a pipeline, the outlet end of the gas-liquid separator B is connected with the inlet end of the compressor B through a pipeline, and therefore a refrigeration;
in the refrigeration system A and the refrigeration system B, heat exchange between a refrigeration circulation loop in the refrigeration system A and a refrigeration circulation loop in the refrigeration system B is realized by a condenser A, a condenser B, an evaporator AI, an evaporator AII and an evaporator B;
the ventilation system comprises an axial flow fan and a centrifugal fan, the condenser A, the evaporator AII and the condenser B share the axial flow fan, and the evaporator AI and the evaporator B share the centrifugal fan to supply air to the indoor space.
2. A condensation-evaporation coupled air conditioning unit according to claim 1, wherein: the condenser a is coupled with the evaporator AII, the condenser B to share the axial fan.
3. A condensation-evaporation coupled air conditioning unit according to claim 1, wherein: the evaporator AI and the evaporator B are coupled together to share a centrifugal fan.
4. A condensation-evaporation coupled air conditioning unit according to claim 1, wherein: in the refrigerating system A, a pipeline between the gas-liquid separator A and the compressor A is also communicated by a bypass and connected with a fluorine filling nozzle A.
5. A condensation-evaporation coupled air conditioning unit according to claim 1, wherein: in the refrigerating system B, a pipeline between the gas-liquid separator B and the compressor B is also communicated by a bypass and connected with a fluorine filling nozzle B.
6. A condensation-evaporation coupled air conditioning unit according to claim 1, wherein: the air conditioner also comprises an electric control system consisting of a power supply and a control unit, wherein the power supply is connected to the compressor A, the compressor B, the axial flow fan and the centrifugal fan through the control unit for power supply.
7. An air conditioning unit coupled together by condensation and evaporation according to claim 6, wherein: the protection system comprises a temperature sensor, a low-pressure protector A and a low-pressure protector B, wherein the temperature sensor is arranged at the air inlet of the coupled evaporator AI and the evaporator B to monitor the air inlet temperature of the evaporator, a bypass of the low-pressure protector A is communicated to a pipeline between the gas-liquid separator A and the compressor A, and a bypass of the low-pressure protector B is communicated to a pipeline between the gas-liquid separator B and the compressor B;
the temperature sensor, the low-voltage protector A and the low-voltage protector B are respectively connected with a control unit in the electric control system, and the control unit controls a compressor A, B, an axial flow fan and a centrifugal fan in the refrigeration system A, B based on signals of the temperature sensor and the low-voltage protector A, B.
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| CN108749518A (en) * | 2018-08-02 | 2018-11-06 | 威马智慧出行科技（上海）有限公司 | A kind of heat management system of electric vehicle |
| CN212242895U (en) * | 2020-03-27 | 2020-12-29 | 合肥天鹅制冷科技有限公司 | Air conditioning device with condensation and evaporation coupling |
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