CN212110436U

CN212110436U - Pressure measurement device, vehicle-mounted air conditioning system and vehicle

Info

Publication number: CN212110436U
Application number: CN202020976429.5U
Authority: CN
Inventors: 邹驰
Original assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Current assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-12-08
Anticipated expiration: 2030-06-01

Abstract

The application discloses pressure measurement device, on-vehicle air conditioning system and vehicle. The air conditioner pipeline comprises a high-pressure refrigerant pipeline and a low-pressure refrigerant pipeline, the expansion valve comprises a high-pressure interface and a low-pressure interface, the pressure measuring device comprises a communicating piece, and a first pressure measuring piece and a second pressure measuring piece which are arranged on the communicating piece, the communicating piece comprises a first channel, a second channel, a third channel and a fourth channel, the first channel is used for communicating the high-pressure refrigerant pipeline of the air conditioner pipeline with the high-pressure interface of the expansion valve, the second channel is used for communicating the low-pressure refrigerant pipeline of the air conditioner pipeline with the low-pressure interface of the expansion valve, the third channel is used for communicating the first channel with the first pressure measuring piece, and the fourth channel is used for communicating the second channel with the second pressure measuring piece. The pressure measuring device can enable the measured pressure/pressure value to be closer to the actual value of the pressure/pressure of the inlet and the outlet of the expansion valve.

Description

Pressure measurement device, vehicle-mounted air conditioning system and vehicle

Technical Field

The utility model relates to a technical field is measured to on-vehicle air conditioner, specifically relates to a pressure measurement device, on-vehicle air conditioning system and vehicle.

Background

The vehicle air conditioning system is a device for cooling, heating, ventilating and purifying air in a carriage. The automobile seat cushion can provide a comfortable riding environment for passengers, reduce the fatigue strength of a driver and improve the driving safety. Air conditioning systems have become one of the indicators for evaluating whether the vehicle is fully functional. During the use of a vehicle, a thermal management test is usually performed on the vehicle to determine whether the air conditioning system is working normally and to calculate the capacity of the air conditioning system. In the thermal management test, whether the air conditioning system works normally or not and the capacity of the air conditioning system need to be calculated by measuring the pressure/pressure of the refrigerant at the inlet and the outlet of the expansion valve. At present, a pressure measuring instrument can be installed at a high-low pressure filling port of an air conditioning system for testing, but the high-low pressure filling port is a certain distance away from an inlet and an outlet of an expansion valve, so that a measured pressure/pressure value is different from an actual value of the pressure/pressure of the inlet and the outlet of the expansion valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming among the prior art in whole car thermal management test, the pressure/pressure value of surveying and the actual value difference of expansion valve import and export pressure/pressure are great problem, provide a pressure measurement device, on-vehicle air conditioning system and vehicle to the actual value that makes the pressure/pressure value of surveying and expansion valve import and export pressure/pressure is comparatively close.

In order to achieve the above object, the utility model provides an aspect provides a pressure measurement device, this pressure measurement device is applied to vehicle air conditioner, pressure measurement device includes the connecting piece and installs in the first pressure measurement spare and the second pressure measurement spare of connecting piece, the first passageway has been seted up on the connecting piece, the second passageway, third passageway and fourth passageway, the first passageway sets up the high pressure interface that is used for communicateing vehicle air conditioner's high pressure refrigerant pipeline and vehicle air conditioner's expansion valve, the second passageway sets up the low pressure interface that is used for communicateing vehicle air conditioner's low pressure refrigerant pipeline and vehicle air conditioner's expansion valve, the third passageway is used for communicateing first passageway and first pressure measurement spare, the fourth passageway is used for communicateing second passageway and second pressure measurement spare.

Optionally, the third channel and the fourth channel are provided inside with a connecting portion for connecting the first pressure measuring part and the second pressure measuring part, respectively.

Optionally, the first channel, the second channel, the third channel and the fourth channel are all linear channels, an axis of the first channel is perpendicular to an axis of the third channel, and an axis of the second channel is perpendicular to an axis of the fourth channel.

Optionally, one end of the first channel extends to the outer surface of the communicating member to form a first interface for connecting with the high-pressure refrigerant pipeline, and the other end of the first channel protrudes from the communicating member to form a second interface for connecting with the high-pressure interface.

Optionally, one end of the second channel extends to the outer surface of the communicating member to form a third interface for connecting with the low-pressure refrigerant pipeline, and the other end of the second channel is arranged to protrude out of the communicating member to form a fourth interface for connecting with the low-pressure interface.

Optionally, an inner diameter of the first port is the same as an inner diameter of the high-pressure port, an outer diameter of the second port is the same as an outer diameter of the high-pressure refrigerant pipe, an inner diameter of the third port is the same as an inner diameter of the low-pressure port, and an outer diameter of the fourth port is the same as an outer diameter of the low-pressure refrigerant pipe.

Optionally, the first port and the third port are located on a first surface of the communicating member, the second port and the fourth port are located on a second surface of the communicating member opposite to the first surface, the first surface is provided with a first groove and a second groove, the first groove and the second groove are formed by the first surface being recessed towards the second surface, the first port is formed on a bottom surface of the first groove, and the third port is formed on a bottom surface of the second groove.

Optionally, a through hole is formed in the communicating piece, a bolt is arranged on the expansion valve, and the bolt penetrates through the through hole to be connected with the air conditioner pipeline.

The utility model discloses the second aspect provides a vehicle-mounted air conditioning system, vehicle-mounted air conditioning system include vehicle-mounted air conditioner and pressure measurement device, and vehicle-mounted air conditioner includes air conditioner pipeline and expansion valve, and the air conditioner pipeline includes high-pressure refrigerant pipeline and low-pressure refrigerant pipeline, and the expansion valve includes high pressure interface and low pressure interface, and pressure measurement device is above pressure measurement device.

The utility model discloses the third aspect provides a vehicle, and the vehicle includes vehicle subject and installs the on-vehicle air conditioning system in vehicle subject, and on-vehicle air conditioning system is above on-vehicle air conditioning system.

According to the technical scheme, the air conditioner pipeline and the expansion valve can be communicated through the first channel and the second channel, the third channel and the fourth channel are respectively communicated with the first pressure measuring part and the second pressure measuring part, and the third channel is communicated with the first channel and the fourth channel is communicated with the second channel, so that the first pressure measuring part and the second pressure measuring part can measure the pressure/pressure of the refrigerant at the inlet and the outlet of the expansion valve from the position closest to the inlet and the outlet of the expansion valve, and more accurate pressure/pressure values at the inlet and the outlet of the expansion valve are obtained.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a pressure measurement device according to the present invention;

FIG. 2 is a schematic view of another angular configuration of the pressure measurement device shown in FIG. 1;

fig. 3 is a schematic partial structure diagram of the vehicle-mounted air conditioning system of fig. 1.

Description of the reference numerals

1. A third channel; 2. a communicating member; 3. a second interface; 4. a through hole; 5. a fourth interface; 6. a first interface; 7. a third interface; 8. a fourth channel; 9. a first pressure measurement member; 10. a second pressure measurement member; 11. a low pressure refrigerant line; 12. a high pressure refrigerant line; 13. an expansion valve; 14. a first channel; 15. a second channel; 16. a second surface; 17. a first surface.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the terms of orientation such as "front, rear, left and right" are generally used in accordance with the orientation shown in the corresponding drawings.

The utility model provides a first aspect provides a pressure measurement device, this pressure measurement device is applied to on-vehicle air conditioner, pressure measurement device includes connecting piece 2 and installs in the first pressure measurement 9 and the second pressure measurement 10 of connecting piece 2, first passageway 14 has been seted up on connecting piece 2, second passageway 15, third passageway 1 and fourth passageway 8, first passageway 14 sets up the high pressure interface that is used for communicateing on-vehicle air conditioner's high pressure refrigerant pipeline 12 and on-vehicle air conditioner's expansion valve, second passageway 15 sets up the low pressure interface that is used for communicateing on-vehicle air conditioner's low pressure refrigerant pipeline 11 and on-vehicle air conditioner's expansion valve, third passageway 1 is used for communicateing first passageway 14 and first pressure measurement 9, fourth passageway 8 is used for communicateing second passageway 15 and second pressure measurement 10. The communication member is used for communicating the air conditioning line with the expansion valve 13 and for connecting with the first pressure measuring member 9 and the second pressure measuring member 10.

The vehicle-mounted air conditioner can comprise a compressor, a condenser, an air conditioning box assembly, an expansion valve, a liquid storage device, an air conditioning pipeline, a condensing fan, an electromagnetic valve, a control system and the like. The vehicle-mounted air conditioner is used for adjusting the temperature and the humidity in the vehicle. An expansion valve is an important component in a refrigeration system and can be installed between the accumulator and the evaporator. The expansion valve makes the liquid refrigerant of medium temperature high pressure form low temperature low pressure wet steam through its throttle, then the refrigerant absorbs the heat in the evaporimeter and reaches the refrigeration effect. The high pressure refrigerant line is operative to connect the accumulator outlet to the expansion valve inlet and to deliver liquid refrigerant from the accumulator outlet to the expansion valve inlet. The low pressure refrigerant line functions to connect the expansion valve outlet to the compressor suction port and to deliver gaseous refrigerant exiting the expansion valve outlet to the compressor suction port.

Through the technical scheme, the air conditioning pipeline and the expansion valve 13 can be communicated through the first channel 14 and the second channel 15, so that the third channel 1 and the fourth channel 8 are respectively communicated with the first pressure measuring part 9 and the second pressure measuring part 10, and the third channel 1 is communicated with the first channel 14, and the fourth channel 8 is communicated with the second channel 15, so that the first pressure measuring part 9 and the second pressure measuring part 10 can measure the pressure/pressure of the refrigerant at the inlet and the outlet of the expansion valve 13 from the position closest to the inlet and the outlet of the expansion valve 13, and more accurate pressure/pressure values at the inlet and the outlet of the expansion valve 13 are obtained.

Alternatively, as shown in fig. 1-2, the ports of the other ends of the third channel 1 and the fourth channel 8 are located on the surface of the communication member 2, respectively. As another embodiment, the interfaces at the other ends of the third channel 1 and the fourth channel 8 may be disposed to protrude from the communication member 2.

Alternatively, the first pressure measuring part 9 and the second pressure measuring part 10 are each a pressure sensor. A pressure sensor is an instrument for measuring the pressure/force of a gas or liquid.

In one embodiment, the pressure sensor includes a cavity in communication with the third channel 1 (fourth channel 8), a membrane disposed within the cavity, a thimble, a sliding rheostat, and an analog-to-digital converter. The membrane is sensitive to the strength of the air pressure/hydraulic pressure in the cavity. One end of the thimble is connected with the thin film, and the other end of the thimble is connected with the sliding end of the sliding rheostat. When the pressure of the detected gas/liquid is reduced or increased, the film is deformed to drive the thimble, the thimble drives the sliding end to slide, and meanwhile, the resistance value of the slide rheostat is changed. The resistance value of the slide rheostat changes. The voltage across the slide rheostat changes and is received by the data collector through the analog-to-digital converter, and then the data collector transmits the result representing the pressure intensity to the computer in a proper form.

As an embodiment, the inside of the third channel 1 and the fourth channel 8 are provided with a connection portion for connecting the first pressure measuring part 9 and the second pressure measuring part 10, respectively. Optionally, the connection is an internal thread provided inside the third and

fourth channels

1, 8. The first pressure measuring part 9 and the second pressure measuring part 10 are respectively connected with the third channel 1 and the fourth channel 8 through copper pipes and sensor adapters, the sealing of the refrigerant is guaranteed, and the pressure/intensity test is realized.

In one embodiment, the first channel 14, the second channel 15, the third channel 1 and the fourth channel 8 are all linear channels, the axis of the first channel 14 is perpendicular to the axis of the third channel 1, and the axis of the second channel 15 is perpendicular to the axis of the fourth channel 8. As another embodiment, the axis of the first channel 14 and the axis of the third channel 1, and the axis of the second channel 15 and the axis of the fourth channel 8 may not be perpendicular, as long as the communication is achieved and the first pressure measuring part 9 and the second pressure measuring part 10 can be conveniently installed.

As an embodiment, as shown in fig. 1-2, one end of the first channel 14 extends to the outer surface of the communication member 2 to form a first port 6 for connection with the high-pressure refrigerant pipe 12, and the other end of the first channel 14 is disposed to protrude from the communication member 2 to form a second port 3 for connection with the high-pressure port. As other embodiments, both ends of the first channel 14 may be disposed to protrude from the communication member 2.

As an embodiment, as shown in fig. 1-2, one end of the second channel 15 extends to the outer surface of the communication member 2 to form the third port 7 for connection with the low pressure refrigerant pipe 11, and the other end of the second channel 15 is disposed to protrude from the communication member 2 to form the fourth port 5 for connection with the low pressure port. As another embodiment, both ends of the second channel 15 may be disposed to protrude from the communicating member 2.

In one embodiment, the first port 6 has an inner diameter equal to that of the high-pressure port, the second port 3 has an outer diameter equal to that of the high-pressure refrigerant pipe 12, the third port 7 has an inner diameter equal to that of the low-pressure port, and the fourth port 5 has an outer diameter equal to that of the low-pressure refrigerant pipe 11. That is, the first port 6 and the third port 7 correspond to a high pressure port and a low pressure port of the expansion valve 13, respectively, and the second port 3 and the fourth port 5 correspond to connection ends of the high pressure refrigerant pipe 12 and the low pressure refrigerant pipe 11, respectively. Therefore, the air conditioner pipeline can be communicated with the expansion valve through the communicating piece and also can be directly communicated with the expansion valve, and the flexibility is improved.

As an embodiment, the first port 6 and the third port 7 are located on a first surface 17 of the communicating member 2, the second port 3 and the fourth port 5 are located on a second surface 16 of the communicating member 2 opposite to the first surface 17, the first surface 17 is provided with a first groove and a second groove, the first groove and the second groove are respectively formed by the first surface 17 being recessed towards the second surface 16, the first port 6 is formed on a bottom surface of the first groove, and the third port 7 is formed on a bottom surface of the second groove. Alternatively, as shown in fig. 1-2, the communication member 2 is a rectangular parallelepiped structure. The first surface 17 is located on the front end face of the communicating member 2 with the front end face being the front face in fig. 2, the second surface 16 is located on the rear end face of the communicating member 2 with the rear end face being the front face in fig. 1, the interface of the third channel 1 for connecting one end of the first pressure measuring member 9 is located on the left end face of the communicating member at the left end of the communicating member 2 in fig. 3, and the interface of the fourth channel 8 for connecting one end of the second pressure measuring member 10 is located on the right end face of the communicating member 2 at the right end face of the communicating member 2 in fig. 3, according to the orientation shown in fig. 3.

In one embodiment, the communicating member 2 is provided with a through hole 4, and the expansion valve 13 is provided with a bolt, which passes through the through hole 4 and is connected with the air conditioning pipeline. The air conditioner pipeline comprises an air conditioner pipeline pressing plate which plays a role in fixing, the air conditioner pipeline pressing plate is respectively sleeved on the high-pressure refrigerant pipeline 12 and the low-pressure refrigerant pipeline 11, a connecting hole which is arranged corresponding to the through hole is formed in the air conditioner pipeline pressing plate, the high-pressure refrigerant pipeline 12 is communicated with the first channel 14, the low-pressure refrigerant pipeline 11 is communicated with the second channel 15, meanwhile, the bolt sequentially penetrates through the through hole and the connecting hole, then, the nut is used for fixing, and therefore the expansion valve 13, the communicating piece 2 and the air conditioner pipeline are fixed. The two openings of the through-hole 4 extend to the first surface 17 and the second surface 16 of the communication member 2, respectively. Alternatively, as shown in fig. 1-2, the through-hole 4 is disposed between the first passage 14 and the second passage 15, and the axis of the through-hole 4 is parallel to the axes of the first passage 14 and the second passage 15.

The utility model discloses the second aspect provides an on-vehicle air conditioning system, this on-vehicle air conditioning system include on-vehicle air conditioner and pressure measurement device, and on-vehicle air conditioner includes air conditioner pipeline and expansion valve 13, and the air conditioner pipeline includes high-pressure refrigerant pipeline 12 and low pressure refrigerant pipeline 11, and expansion valve 13 includes high pressure interface and low pressure interface, and pressure measurement device is more than. In addition, the vehicle-mounted air conditioning system also comprises an air conditioning box assembly, a condenser, a compressor, a liquid storage device, a condensing fan, an electromagnetic valve, a control system, other air conditioning pipelines and other components.

The utility model discloses the third aspect provides a vehicle, and the vehicle includes vehicle subject and installs the on-vehicle air conditioning system in vehicle subject, on-vehicle air conditioning system be above on-vehicle air conditioning system.

The pressure measuring device sets the first surface 17 to be consistent with the surface to be connected with the expansion valve 13, and sets the second surface 16 to be consistent with the end to be connected of the high-pressure refrigerant pipeline 12 and the low-pressure refrigerant pipeline 11, so that when the measuring device is not required to be installed, the high-pressure refrigerant pipeline 12 and the low-pressure refrigerant pipeline 11 can be directly connected with a high-pressure interface and a low-pressure interface of the expansion valve 13, namely, an air-conditioning pipeline can be directly connected with the expansion valve 13, and can also be connected with the expansion valve 13 through the measuring device, and the flexibility is improved. The installation step: the measuring device is arranged at the inlet and the outlet of the expansion valve 13, the second interface 3 of the measuring device is connected with the high-pressure interface of the expansion valve 13, the fourth interface 5 of the measuring device is connected with the low-pressure interface of the expansion valve 13, and a sealing ring can be additionally arranged before the measuring device is arranged on the expansion valve 13 so as to ensure the sealing property; the high-pressure refrigerant pipeline 12 is connected with the first interface 6, the low-pressure refrigerant pipeline 11 is connected with the third interface 7, the first pressure measuring part 9 and the second pressure measuring part 10 are respectively arranged on the third channel 1 and the fourth channel 8, and the first pressure measuring part 9 and the second pressure measuring part 10 are respectively connected in and collected to acquire data. The measuring device can measure the pressure/pressure of the refrigerant from the position closest to the inlet and the outlet of the expansion valve 13, thereby obtaining more accurate pressure/pressure values of the inlet and the outlet of the expansion valve 13.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be simply modified, for example, the first channel, the second channel 15, the third channel 1, and the fourth channel 8 can be respectively changed into bending channels; the first pressure measuring part 9 and the second pressure measuring part 10 can also be pressure transmitters. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A pressure measuring device is applied to a vehicle-mounted air conditioner and is characterized by comprising a communicating piece (2), and a first pressure measuring piece (9) and a second pressure measuring piece (10) which are arranged on the communicating piece (2), wherein a first channel (14), a second channel (15), a third channel (1) and a fourth channel (8) are arranged on the communicating piece (2), the first channel (14) is arranged to be a high-pressure interface for communicating a high-pressure refrigerant pipeline (12) of the vehicle-mounted air conditioner with an expansion valve of the vehicle-mounted air conditioner, the second channel (15) is arranged to be a low-pressure interface for communicating a low-pressure refrigerant pipeline (11) of the vehicle-mounted air conditioner with the expansion valve of the vehicle-mounted air conditioner, and the third channel (1) is used for communicating the first channel (14) with the first pressure measuring piece (9), the fourth channel (8) is used for communicating the second channel (15) with the second pressure measuring part (10).

2. Pressure measuring device according to claim 1, characterized in that the interior of the third channel (1) and the fourth channel (8) is provided with a connection for connecting the first pressure measuring piece (9) and the second pressure measuring piece (10), respectively.

3. A pressure measuring device according to claim 1, characterized in that the first channel (14), the second channel (15), the third channel (1) and the fourth channel (8) are all rectilinear channels, the axis of the first channel (14) being perpendicular to the axis of the third channel (1), the axis of the second channel (15) being perpendicular to the axis of the fourth channel (8).

4. A pressure measuring device according to any one of claims 1-3, characterized in that one end of the first channel (14) extends to the outer surface of the communication member (2) to form a first port (6) for connection with the high-pressure refrigerant line (12), and the other end of the first channel (14) is arranged protruding from the communication member (2) to form a second port (3) for connection with the high-pressure port.

5. A pressure measuring device according to claim 4, characterized in that one end of the second channel (15) extends to the outer surface of the communication piece (2) to form a third port (7) for connection with the low-pressure refrigerant line (11), and the other end of the second channel (15) is arranged protruding from the communication piece (2) to form a fourth port (5) for connection with the low-pressure port.

6. Pressure measuring device according to claim 5, characterized in that the inner diameter of the first port (6) is the same as the inner diameter of the high pressure port, the outer diameter of the second port (3) is the same as the outer diameter of the high pressure refrigerant line (12), the inner diameter of the third port (7) is the same as the inner diameter of the low pressure port, and the outer diameter of the fourth port (5) is the same as the outer diameter of the low pressure refrigerant line (11).

7. Pressure measuring device according to claim 5, characterized in that the first port (6) and the third port (7) are located on a first surface (17) of the communicating member (2), the second port (3) and the fourth port (5) are located on a second surface (16) of the communicating member (2) opposite to the first surface (17), the first surface (17) is provided with a first groove and a second groove, respectively, the first groove and the second groove are formed by the first surface (17) being recessed in the direction of the second surface (16), the first port (6) is formed on the bottom surface of the first groove, and the third port (7) is formed on the bottom surface of the second groove.

8. A pressure measuring device according to any of claims 1-3, characterized in that the communication member (2) is provided with a through hole (4), and the expansion valve (13) is provided with a bolt, which is connected to the air conditioning pipe through the through hole (4).

9. An on-board air conditioning system, characterized in that, the on-board air conditioning system includes an on-board air conditioner and a pressure measurement device, the on-board air conditioner includes an air conditioning pipeline and an expansion valve (13), the air conditioning pipeline includes a high pressure refrigerant pipeline (12) and a low pressure refrigerant pipeline (11), the expansion valve (13) includes a high pressure interface and a low pressure interface, and the pressure measurement device is the pressure measurement device of any one of claims 1-8.

10. A vehicle characterized by comprising a vehicle main body and an on-vehicle air conditioning system mounted on the vehicle main body, the on-vehicle air conditioning system being the on-vehicle air conditioning system according to claim 9.