CN112549903A - Automobile air conditioner refrigerating system, testing method and hydrogen energy automobile - Google Patents

Automobile air conditioner refrigerating system, testing method and hydrogen energy automobile Download PDF

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Publication number
CN112549903A
CN112549903A CN202011505491.7A CN202011505491A CN112549903A CN 112549903 A CN112549903 A CN 112549903A CN 202011505491 A CN202011505491 A CN 202011505491A CN 112549903 A CN112549903 A CN 112549903A
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CN
China
Prior art keywords
pipe
air
conditioning
refrigerant
loop
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Pending
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CN202011505491.7A
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Chinese (zh)
Inventor
魏成龙
郝义国
陈振武
李洋洋
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Wuhan Grove Hydrogen Automobile Co Ltd
Wuhan Grove Hydrogen Energy Automobile Co Ltd
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Wuhan Grove Hydrogen Energy Automobile Co Ltd
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Application filed by Wuhan Grove Hydrogen Energy Automobile Co Ltd filed Critical Wuhan Grove Hydrogen Energy Automobile Co Ltd
Priority to CN202011505491.7A priority Critical patent/CN112549903A/en
Publication of CN112549903A publication Critical patent/CN112549903A/en
Pending legal-status Critical Current

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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
    • B60H1/00585—Means for monitoring, testing or servicing the air-conditioning
    • 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
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • 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
    • 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
    • B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention provides an automobile air-conditioning refrigeration system, a test method and a hydrogen energy automobile, wherein the automobile air-conditioning refrigeration system comprises: the air conditioner comprises a compressor, a condenser, an air conditioner coaxial pipe and an evaporator which are sequentially connected to form a loop, wherein the air conditioner coaxial pipe is provided with a first loop and a second loop; both ends of the first loop are connected to a pipeline between the condenser and the evaporator through the air-conditioning coaxial pipe; and two ends of the second loop are connected to a pipeline between the condenser and the compressor through the air-conditioning coaxial pipe. The invention improves the refrigeration capacity of the automobile air conditioning system through the air conditioning coaxial pipe, further reduces the energy consumption of the system and improves the refrigeration efficiency of the air conditioner.

Description

Automobile air conditioner refrigerating system, testing method and hydrogen energy automobile
Technical Field
The invention relates to the technical field of automobile air conditioners, in particular to an automobile air conditioner refrigerating system, a testing method and a hydrogen energy automobile.
Background
The energy consumption of the automobile air conditioning system has very important influence on the driving mileage of the automobile no matter a traditional fuel oil vehicle or a pure electric automobile, a hybrid automobile and a hydrogen energy automobile. However, the cooling capacity of the current automobile air conditioning system is insufficient, and the energy consumption of the system needs to be further reduced.
Disclosure of Invention
The invention solves the problems that for the automobile air-conditioning refrigeration system which is mainstream in the current market, the refrigeration capacity of the existing automobile air-conditioning system is insufficient, and the energy consumption of the system needs to be further reduced.
In order to solve the above problems, the present invention provides a vehicle air conditioner refrigeration system, comprising:
the air conditioner comprises a compressor, a condenser, an air conditioner coaxial pipe and an evaporator which are sequentially connected to form a loop, wherein the air conditioner coaxial pipe is provided with a first loop and a second loop;
both ends of the first loop are connected to a pipeline between the condenser and the evaporator through the air-conditioning coaxial pipe;
and two ends of the second loop are connected to a pipeline between the condenser and the compressor through the air-conditioning coaxial pipe.
According to the invention, through the air conditioner coaxial pipe, the heat of the high-pressure pipe is effectively transferred by the low-pressure pipe, the secondary heat exchange of the air conditioning system is realized, the refrigerating capacity of the automobile air conditioning system is improved, the energy consumption of the system is further reduced, and the refrigerating efficiency of the air conditioner is improved.
Further, the air conditioner is with the axle pipe including outer tube and inner tube, the outer tube suit is in the inner tube outside, the outer tube with form the high pressure medium cavity between the inner tube, the inside low pressure medium cavity that forms of inner tube, the inner tube both ends are extended the outside one end distance of outer tube the inner tube both ends are equipped with the low pressure interface, the outer tube both ends still are equipped with the throat, the throat with inner tube (301) welded fastening, the outer tube outside is close to the external mounting hole that has seted up of throat, the outer circumference of outer tube (302) still is equipped with the reducing interface, the major diameter end and the mounting hole welded fastening of reducing interface, the minor diameter end and the high-pressure pipe one end welded fastening of reducing interface, the other end of high-pressure pipe is equipped with the high pressure interface, the inner wall and the outer wall of inner tube all are.
Therefore, the outer pipe is connected with the high-pressure pipe through the reducing interface, so that the flow resistance of a refrigerant on the high-pressure side is greatly reduced, and the heat exchange effect of the coaxial pipe is improved; the inner wall and the outer wall of the inner pipe are both provided with spiral grooves, so that the heat exchange effect in the pipe is enhanced. The heat exchange efficiency of the coaxial heat exchanger is improved, the energy transfer process is reduced, and energy is more reasonably and effectively utilized.
The air conditioner further comprises a first expansion valve, and the first expansion valve is arranged on a loop between the air conditioner coaxial pipe and the evaporator along the flow direction of the refrigerant and on the first loop.
The first expansion valve is used for controlling whether the first loop is connected with the loop or not, so that the first expansion valve enables the liquid refrigerant with medium temperature and high pressure to be throttled into wet steam with low temperature and low pressure, and then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect.
The air conditioner further comprises a second expansion valve, and the second expansion valve is arranged on a loop between the air conditioner coaxial pipe and the compressor along the refrigerant flowing direction and on the second loop.
And controlling whether the second loop is connected to the loop or not through a second expansion valve, so that the second loop enters a coaxial pipe for heat exchange after being expanded by the second expansion valve, then flows into a compressor for compression, and then enters a condenser for condensation.
The refrigerant filling device comprises a refrigerant tank and a refrigerant filling pipeline, one end of the refrigerant filling pipeline is connected with the refrigerant tank, and the other end of the refrigerant filling pipeline is connected to the loop.
Therefore, when the refrigerant in the system is insufficient, the refrigerant in the refrigerant tank can be supplemented into the system through the refrigerant filling pipeline, automatic filling of the refrigerant is achieved, manual maintenance is not needed, and maintenance cost is reduced.
Furthermore, the refrigerant tanks are respectively connected into the refrigerant filling pipelines through refrigerant filling loops, and the refrigerant filling pipelines are provided with refrigerant filling valves.
The refrigerant content supplementing mode is realized by controlling the on-off of the refrigerant filling valve, and the refrigerant filling valve is simple and convenient and has high controllability.
Furthermore, a filter is arranged in front of the refrigerant filling valve along the refrigerant flowing direction and on the refrigerant filling pipeline.
The filter is arranged, so that impurities can be prevented from entering a circulation loop of the automobile air-conditioning refrigeration system.
The invention also provides a test method of the automobile air conditioner refrigeration system, which comprises the following steps:
S1: starting a compressor to enable a refrigerant to flow in the test loop, wherein the refrigerant enters the air conditioner coaxial pipe through a condenser;
S2: a first expansion valve and a second expansion valve are respectively arranged on a first loop and a second loop of the air-conditioning coaxial pipe, a test loop of the air-conditioning coaxial pipe is controlled through the first expansion valve and the second expansion valve respectively, and a high-pressure pipe temperature and pressure measuring point and a low-pressure pipe temperature and pressure measuring point are arranged as required;
S3: adjusting and controlling the cooling water quantity of the condenser, the opening of the adjusting valve and the input power of the compressor to enable the temperature and the pressure of the refrigerant at the inlet of the air-conditioning coaxial pipe to meet the test conditions;
S4: and controlling the flow of the refrigerant flowing through the air-conditioning coaxial pipe by the rotating speed or the frequency of the compressor.
By controlling the working state of each part in the test system, the temperature and the pressure at the inlets of the high-pressure pipe and the low-pressure pipe of the air-conditioning coaxial pipe and the flow passing through the high-pressure pipe of the air-conditioning coaxial pipe can be always kept under the test conditions, so that whether the performance of the air-conditioning coaxial pipe meets the requirements or not can be accurately monitored.
The invention also provides a hydrogen energy automobile which comprises the automobile air-conditioning refrigeration system.
Compared with the prior art, the hydrogen energy automobile provided by the invention has the same beneficial effects as the automobile air-conditioning refrigeration system, and the description is omitted.
Drawings
FIG. 1 is a block diagram of the system components of a refrigeration system for an automotive air conditioner in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an air-conditioning coaxial pipe according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for testing an air conditioning system of a vehicle according to an embodiment of the present invention.
Description of reference numerals:
10-a compressor; 20-a condenser; 30-air conditioning coaxial pipe; 301-an inner tube; 302-an outer tube; 303-necking down; 304-a low voltage interface; 305-a high voltage interface; 306-a reducing interface; 307-high pressure pipe; 308-spiral groove; 40-an evaporator; 50-refrigerant filling device; 501-refrigerant tank; 502-refrigerant charging line; 503-refrigerant charging valve; 504-a filter; 60-a first expansion valve; 70-second expansion valve.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Aiming at the problem that the refrigeration capacity of the automobile air conditioning system in the prior art is insufficient, the fuel consumption is increased. An embodiment of the present invention provides an automotive air conditioning refrigeration system, as shown in fig. 1, in a system in which a compressor 10, a condenser 20, an air conditioning coaxial pipe 30, and an evaporator 40 are sequentially connected to form a loop, a first loop and a second loop are added, both ends of the first loop are connected to a pipeline between the condenser 20 and the evaporator 40 through the air conditioning coaxial pipe 30, and both ends of the second loop are connected to a pipeline between the condenser 20 and the compressor 10 through the air conditioning coaxial pipe 30.
In the embodiment, the air-conditioning coaxial pipe 30 is adopted between the evaporator 40 and the condenser 20, through the air-conditioning coaxial pipe 30, the air-conditioning coaxial pipe 30 is equivalent to an internal heat exchanger, in a coaxial pipeline, the flowing regions of hot fluid and cold gas are mutually separated, the flowing directions are opposite, high-temperature liquid refrigerant flows out of the condenser 20, low-temperature gaseous refrigerant flows out of the evaporator 40, when the two meet, the high-temperature liquid refrigerant is cooled, the heat of a high-pressure pipe is effectively transferred by a low-pressure pipe, secondary heat exchange of an air-conditioning system is realized, the refrigerating capacity of the automobile air-conditioning system is improved, the energy consumption of the system is further reduced, and the air-conditioning refrigerating efficiency is improved.
Referring to fig. 2, the air-conditioning coaxial pipe 30 includes an outer pipe 302 and an inner pipe 301, the outer pipe 302 is sleeved on the outer side of the inner pipe 301, a high-pressure medium cavity is formed between the outer pipe 302 and the inner pipe 301, a low-pressure medium cavity is formed inside the inner pipe 301, two ends of the inner pipe 301 extend out of the outer end of the outer pipe 302, low-pressure interfaces 304 are arranged at two ends of the inner pipe 301, two ends of the outer pipe 302 are further provided with a reducing port 303, the reducing port 303 is welded and fixed to the inner pipe 301, an installation hole is formed in the outer side of the outer pipe 302, which is close to the reducing port 303, a reducing interface 306 is further arranged on the outer circumference of the outer pipe 302, a large-diameter end of the reducing interface 306 is welded and fixed to the installation hole, a small-diameter.
In this embodiment, the outer pipe 302 and the high-pressure pipe 307 are connected by the reducing interface 306, so that the flow resistance of the refrigerant on the high-pressure side is greatly reduced, and the heat exchange effect of the coaxial pipe is improved. In addition, the inner wall and the outer wall of the inner pipe 301 are both provided with spiral grooves 308, so that the heat exchange effect in the pipe is enhanced. The heat exchange efficiency of the air-conditioning coaxial pipe 30 is improved, the energy transfer process is reduced, and the energy is more reasonably and effectively utilized.
It should be noted that the air-conditioning coaxial pipe 30 may also be designed as an integral structure, or as a separate structure, or as a threaded structure. The coaxial tube with the integrated structure and the separated structure has high processing precision; the coaxial pipe material of the thread structure is easy to obtain, strong in universality and low in cost.
The automobile air-conditioning refrigeration system further comprises a first expansion valve 60, the first expansion valve 60 is arranged on a loop between the air-conditioning coaxial pipe 30 and the evaporator 40 along the refrigerant flowing direction and on the first loop, and the first expansion valve 60 is used for controlling the on-off of the first loop.
In the normal operation state of the refrigeration system, the refrigerant is divided into two loops after passing through the condenser 20, the first loop passes through the air conditioner coaxial pipe 30 and then is expanded through the first expansion valve 60, enters the air conditioner assembly to complete evaporation and heat absorption, reduces the temperature of air entering the passenger compartment, flows out of the air conditioning box, enters the compressor 10, is compressed by the compressor 10, and then enters the condenser 20 for condensation.
The automotive air conditioning refrigeration system further includes a second expansion valve 70, and the second expansion valve 70 is disposed on a loop between the air conditioning coaxial pipe 30 and the compressor 10 along the refrigerant flowing direction and on the second loop.
Under the normal operation state of the refrigeration system, the refrigerant is divided into two loops after passing through the condenser 20, the second loop enters the air-conditioning coaxial pipe 30 for heat exchange after being expanded by the second expansion valve 70, then flows into the compressor 10 for compression, and then enters the condenser 20 for condensation.
The refrigerating system further comprises a refrigerant filling device 50, and the controller further controls the refrigerant filling device 50 to add the refrigerant into the refrigerant circulation loop according to the content of the refrigerant needing to be supplemented.
Preferably, the coolant filling device 50 includes a coolant tank 501 and a coolant filling pipeline 502, one end of the coolant filling pipeline 502 is connected to the coolant tank 501, and the other end of the coolant filling pipeline 502 is connected to the coolant circulation loop. Preferably, to facilitate the addition of the refrigerant, the other end of the refrigerant filling line 502 is connected to a line between the compressor 10 and the evaporator 40. The refrigerant in the corresponding refrigerant tank can be supplemented into the refrigerant circulation loop, so that targeted supplement is realized.
Further, the refrigerant tanks 501 are respectively connected to the refrigerant charging lines 502 through refrigerant charging circuits, and the refrigerant charging circuits are provided with refrigerant charging valves 503, and the refrigerant charging valves 503 are used for controlling whether to supplement the refrigerant in the refrigerant tanks into the circuits. Preferably, a filter 504 is disposed in front of the refrigerant filling valve 503 along the refrigerant flowing direction and the refrigerant filling circuit, for preventing impurities from entering the circulation circuit of the vehicle air conditioning and refrigeration system.
It should be noted that the refrigeration system for the automobile air conditioner provided by this embodiment can automatically identify the content of missing refrigerant, and can automatically fill the refrigerant with corresponding components, and the filling amount is controllable, so that manual maintenance is not required, and the maintenance cost is reduced.
Further, the automobile air-conditioning refrigeration system also comprises an air-conditioning assembly, wherein a controller is arranged in the air-conditioning assembly, and the controller is electrically connected with the compressor 10 and the air-conditioning coaxial pipe 30.
Through the use of the air-conditioning assembly and the air-conditioning coaxial pipe combined air-supplying enthalpy-increasing compressor, the controller of the air-conditioning assembly is utilized, the exhaust temperature of the outlet of the compressor can be effectively reduced under severe working conditions, the reliability of the system is enhanced, and meanwhile, the energy efficiency ratio of the system is improved, so that the automatic control of a refrigeration system is realized, and the efficiency is improved.
Further, the air-conditioning coaxial pipe 30 is made of a large-caliber aluminum pipe.
In the present embodiment, the air-conditioning coaxial pipe 30 is made of a large-diameter aluminum pipe, and although the processing is complicated, the aluminum pipe can improve the air-conditioning refrigeration effect and save the fuel consumption. Compared with a common pipe, the common pipe is separated, although the common pipe is convenient to process and easy to obtain, the low-pressure pipe of the air conditioner absorbs heat at low temperature and dissipates energy, the low-pressure pipe is connected with an outlet of the evaporator 40, the temperature of the refrigerant discharged is low due to the low temperature of the evaporator 40 in the refrigeration process of the automobile air conditioner, and therefore condensed water drops on the surface of the low-pressure pipe can appear in the refrigeration process of the air conditioner in summer, the heat absorption of the low-pressure pipe is reflected, and the energy can be dissipated to an engine room through the heat transfer form of the low-pressure pipe, and the loads of a compressor and an engine can be.
The air-conditioning coaxial pipe 30 in the embodiment can improve the refrigeration effect of the air conditioner, and the temperature of the air outlet is reduced by 3 to 4 ℃; the fuel consumption is saved, the refrigerating capacity is improved, and the defects of insufficient refrigerating capacity and the like of an air conditioning system can be overcome by using a compressor with smaller displacement; the common pipeline can be changed into the coaxial pipe without changing the assembly sizes of other parts.
As shown in fig. 3, the present invention further provides a testing method for a refrigeration system of an automotive air conditioner, comprising:
S1: starting the compressor 10 to make the refrigerant flow in the test loop, and the refrigerant enters the air-conditioning coaxial pipe 30 through the condenser 20;
S2: a first expansion valve 60 and a second expansion valve 70 are respectively arranged on a first loop and a second loop of the air-conditioning coaxial pipe 30, the testing loop of the air-conditioning coaxial pipe 30 is controlled through the first expansion valve 60 and the second expansion valve 70 respectively, and temperature and pressure measuring points of a high-pressure pipe 307 and temperature and pressure measuring points of a low-pressure pipe are arranged as required;
S3: adjusting and controlling the cooling water quantity of the condenser 20, the opening of the adjusting valve and the input power of the compressor 10 to ensure that the temperature and the pressure of the refrigerant at the inlet of the air-conditioning coaxial pipe 30 meet the test conditions;
S4: the flow rate of the refrigerant flowing through the air-conditioning coaxial pipe 30 is controlled by the rotation speed or frequency of the compressor 10.
By controlling the working state of each part in the test system, the temperature and the pressure at the inlets of the high-pressure pipe and the low-pressure pipe of the air-conditioning coaxial pipe and the flow passing through the high-pressure pipe of the air-conditioning coaxial pipe can be always kept under the test conditions, so that whether the performance of the air-conditioning coaxial pipe meets the requirements or not can be accurately monitored.
The invention also provides a hydrogen energy automobile which comprises the automobile air-conditioning refrigeration system.
Compared with the prior art, the hydrogen energy automobile provided by the invention has the same beneficial effects as the automobile air-conditioning refrigeration system, and the description is omitted.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An automotive air conditioning refrigeration system, comprising:
a compressor (10), a condenser (20), an air-conditioning coaxial pipe (30) and an evaporator (40) connected in sequence to form a circuit, the air-conditioning coaxial pipe (30) having a first circuit and a second circuit;
both ends of the first loop are connected to a pipeline between the condenser (20) and the evaporator (40) through the air-conditioning coaxial pipe (30);
and the two ends of the second loop are connected to a pipeline between the condenser (20) and the compressor (10) through the air-conditioning coaxial pipe (30).
2. The automobile air-conditioning refrigeration system according to claim 1, wherein the air-conditioning coaxial pipe (30) comprises an outer pipe (302) and an inner pipe (301), the outer pipe (302) is sleeved outside the inner pipe (301), a high-pressure medium cavity is formed between the outer pipe (302) and the inner pipe (301), a low-pressure medium cavity is formed inside the inner pipe (301), two ends of the inner pipe (301) extend out of one end of the outer pipe (302), low-pressure interfaces (304) are arranged at two ends of the inner pipe (301), necking ports (303) are further arranged at two ends of the outer pipe (302), the necking ports (303) are welded and fixed with the inner pipe (301), a mounting hole is formed outside the outer side of the outer pipe (302) close to the necking ports (303), a reducing interface (306) is further arranged on the outer circumference of the outer pipe (302), and a large-diameter end of the reducing interface (306) is welded and fixed with the mounting hole, the small-diameter end of the reducing interface (306) is welded and fixed with one end of a high-pressure pipe (307), the other end of the high-pressure pipe (307) is provided with a high-pressure interface (305), and the inner wall and the outer wall of the inner pipe (301) are provided with spiral grooves (308).
3. The automotive air-conditioning refrigeration system as claimed in claim 1, further comprising a first expansion valve (60), wherein the first expansion valve (60) is arranged on the circuit between the air-conditioning coaxial pipe (30) and the evaporator (40) along the refrigerant flowing direction and on the first circuit.
4. The air conditioning refrigeration system for automobile as claimed in claim 3, further comprising a second expansion valve (70), wherein the second expansion valve (70) is disposed on the circuit between the air conditioning coaxial pipe (30) and the compressor (10) along the refrigerant flowing direction and on the second circuit.
5. The automotive air conditioning refrigeration system according to claim 1, further comprising a refrigerant filling device (50), wherein the refrigerant filling device (50) comprises a refrigerant tank (501) and a refrigerant filling pipeline (502), one end of the refrigerant filling pipeline (502) is connected with the refrigerant tank (501), and the other end of the refrigerant filling pipeline (502) is connected to the loop.
6. The automotive air conditioning refrigeration system as claimed in claim 5, wherein the refrigerant tanks (501) are respectively connected to the refrigerant filling pipelines (502) through refrigerant filling loops, and the refrigerant filling pipelines (502) are provided with refrigerant filling valves (503).
7. The vehicle air-conditioning refrigeration system according to claim 5, characterized in that a filter (504) is arranged in front of the refrigerant filling valve (503) along the refrigerant flowing direction and on the refrigerant filling pipeline (502).
8. The automotive air conditioning refrigeration system of claim 1, further comprising an air conditioning assembly having a controller therein, the controller electrically connecting the compressor (10) and the air conditioning coaxial pipe (30).
9. A test method for a refrigeration system of an automobile air conditioner is characterized by comprising the following steps:
S1: starting the compressor (10) to make the refrigerant flow in the test circuit, said refrigerant entering the air-conditioning coaxial pipe (30) through the condenser (20);
S2: a first expansion valve (60) and a second expansion valve (70) are respectively arranged on a first loop and a second loop of the air-conditioning coaxial pipe (30), a test loop of the air-conditioning coaxial pipe (30) is controlled through the first expansion valve (60) and the second expansion valve (70), and temperature and pressure measuring points of a high-pressure pipe (307) and temperature and pressure measuring points of a low-pressure pipe are arranged as required;
S3: adjusting and controlling the amount of cooling water of the condenser (20), the opening of an adjusting valve and the input power of the compressor (10) to enable the temperature and the pressure of the refrigerant at the inlet of the air-conditioning coaxial pipe (30) to meet test conditions;
S4: the refrigerant flow rate flowing through the air-conditioning coaxial pipe (30) is controlled by the rotation speed or frequency of the compressor (10).
10. A hydrogen powered vehicle comprising a vehicle air conditioning refrigeration system as claimed in any one of claims 1 to 8.
CN202011505491.7A 2020-12-18 2020-12-18 Automobile air conditioner refrigerating system, testing method and hydrogen energy automobile Pending CN112549903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011505491.7A CN112549903A (en) 2020-12-18 2020-12-18 Automobile air conditioner refrigerating system, testing method and hydrogen energy automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011505491.7A CN112549903A (en) 2020-12-18 2020-12-18 Automobile air conditioner refrigerating system, testing method and hydrogen energy automobile

Publications (1)

Publication Number Publication Date
CN112549903A true CN112549903A (en) 2021-03-26

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Application Number Title Priority Date Filing Date
CN202011505491.7A Pending CN112549903A (en) 2020-12-18 2020-12-18 Automobile air conditioner refrigerating system, testing method and hydrogen energy automobile

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113291123A (en) * 2021-06-28 2021-08-24 上海应用技术大学 Novel spiral coaxial tube heat exchanger for automobile air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113291123A (en) * 2021-06-28 2021-08-24 上海应用技术大学 Novel spiral coaxial tube heat exchanger for automobile air conditioner
CN113291123B (en) * 2021-06-28 2023-02-24 上海应用技术大学 Spiral coaxial tube heat exchanger for automobile air conditioner

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