Pipeline assembly connected with thermostatic expansion valve

Abstract

The utility model relates to a pipeline assembly connected with a thermostatic expansion valve, which relates to the technical field of automobile air conditioner pipelines, and comprises a high-pressure pipe, a low-pressure pipe and a connecting seat for connecting the high-pressure pipe and the low-pressure pipe with the expansion valve, a high-pressure filling valve is arranged on the high-pressure pipe, and a low-pressure filling valve is arranged on the low-pressure pipe. A pressing plate for limiting the trend of the high-pressure pipe is arranged on the low-pressure pipe, the connecting seat is located at the front ends of the high-pressure pipe and the low-pressure pipe, and the pressing plate is located at the rear ends of the high-pressure pipe and the low-pressure pipe. The front ends of the high-pressure pipe and the low-pressure pipe are limited by the connecting seat, the rear ends of the high-pressure pipe and the low-pressure pipe are limited by the pressing plate, and the trend of the pipeline is limited through the matching of the connecting seat and the pressing plate, so that the convenience of pipeline arrangement trend control is improved, and the mounting space is saved by controlling the trend arrangement of the pipeline; therefore, the arrangement effect of the automobile air conditioner pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning pipelines, in particular to a pipeline assembly connected with a thermal expansion valve. Background Art

[0002] Automobile air-conditioning pipelines are pipeline assemblies used to connect the various components of automobile air-conditioning. Automobile air-conditioning pipelines are divided into high-pressure pipelines and low-pressure pipelines. The high-pressure side includes the compressor output side, high-pressure pipelines, condensers, liquid storage dryers and liquid pipelines. The low-pressure side includes the evaporator, accumulator, return air pipeline, compressor input side and compressor oil pool.

[0003] The expansion valve is one of the essential components in the automobile air-conditioning system. The automobile air-conditioning pipeline from the compressor to the expansion valve is usually called the high-pressure pipeline, and the automobile air-conditioning pipeline from the expansion valve to the compressor is usually called the low-pressure pipeline. When there are multiple flow channels that need to be interconnected, the number of pipelines connected to the expansion valve increases. The common pipeline route design is relatively complicated, occupies a larger installation space in the car, and is not convenient for the installation and maintenance of the pipeline, thereby reducing the layout effect of the automobile air-conditioning pipeline. Utility Model Content

[0004] In order to improve the arrangement effect of automobile air-conditioning pipelines, the utility model provides a pipeline assembly connected to a thermal expansion valve.

[0005] The present application provides a pipeline assembly connected to a thermal expansion valve, which adopts the following technical solution:

[0006] A pipeline assembly connected to a thermal expansion valve comprises a high-pressure pipe, a low-pressure pipe, and a connecting seat connecting the high-pressure pipe and the low-pressure pipe to the expansion valve, the high-pressure pipe is provided with a high-pressure filling valve, the low-pressure pipe is provided with a low-pressure filling valve, the low-pressure pipe is provided with a pressure plate for limiting the direction of the high-pressure pipe, the connecting seat is located at the front ends of the high-pressure pipe and the low-pressure pipe, and the pressure plate is located at the rear ends of the high-pressure pipe and the low-pressure pipe.

[0007] By adopting the above technical solution, the connecting seat restricts the front ends of the high-pressure pipe and the low-pressure pipe, and the pressure plate limits the rear ends of the high-pressure pipe and the low-pressure pipe. The direction of the pipeline is restricted by the cooperation between the connecting seat and the pressure plate, thereby improving the convenience of controlling the direction of the pipeline layout. By controlling the direction of the pipeline layout, the installation space is saved, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0008] Optionally, the rear end of the high-pressure pipe has a high-pressure sealing head, the inner diameter of the high-pressure sealing head is consistent with the inner diameter of the high-pressure pipe, and the rear end of the low-pressure pipe has a low-pressure sealing head, the inner diameter of the low-pressure sealing head is consistent with the inner diameter of the low-pressure pipe, the outer diameters of the high-pressure sealing head and the low-pressure sealing head gradually decrease from front to back, and the pressure plate is arranged at the low-pressure sealing head and the high-pressure sealing head.

[0009] By adopting the above technical solution, the high-pressure pipe sealing head facilitates the subsequent connection of the high-pressure pipe with other components, and the low-pressure pipe sealing head facilitates the subsequent connection of the low-pressure pipe with other components, and the high-pressure pipe sealing head and the low-pressure pipe sealing head do not affect the flow rate of refrigerant in the high-pressure pipe and the low-pressure pipe, thereby improving the convenience of connecting the pipeline assembly with other components.

[0010] Optionally, the pressure plate has a limiting hole for limiting the low-pressure pipe, and the part of the low-pressure pipe close to the low-pressure sealing head is coaxially inserted into the limiting hole. The pressure plate has an elastic part for clamping the high-pressure pipe, and the elastic part has an elastic opening. During installation, the high-pressure pipe enters the elastic part through the elastic opening.

[0011] By adopting the above technical scheme, the pressure plate is sleeved on the low-pressure sealing head, so that the part of the low-pressure pipe close to the low-pressure sealing head is coaxially penetrated in the limiting hole, and then the pressure plate is rotated to make the elastic opening face the high-pressure pipe, and the pressure plate is pushed to make the high-pressure pipe enter the elastic part through the elastic opening, and the positions of the low-pressure pipe and the high-pressure pipe are limited by the limiting hole and the elastic part respectively, thereby improving the stability of the pipeline assembly during packaging and transportation, and the concentricity between the high-pressure pipe and the low-pressure pipe can be adjusted by rotating the pressure plate, thereby improving the convenience of limiting the direction of the high-pressure pipe and the low-pressure pipe, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0012] Optionally, one end of the pressure plate close to the low-pressure sealing head has a limiting groove that coincides with the axis of the limiting hole, the diameter of the limiting groove is larger than the diameter of the limiting hole, and the front end of the low-pressure sealing head is tightly pressed against the limiting groove.

[0013] By adopting the above technical solution, the pressure plate is pushed so that the part of the low-pressure pipe close to the low-pressure sealing head is coaxially inserted into the limiting hole, and the front end of the low-pressure sealing head is located in the limiting groove. Then the pressure plate is rotated so that the elastic opening faces the high-pressure pipe. The pressure plate is continuously rotated and pushed so that the high-pressure pipe enters the elastic part. At the same time, the front end of the low-pressure sealing head is pressed against the inner wall of the limiting groove, thereby realizing the positioning of the direction restriction of the low-pressure pipe and the high-pressure pipe. The pressure plate is used to make the axes of the high-pressure pipe and the low-pressure pipe located here parallel to each other, thereby saving subsequent installation space, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0014] Optionally, the high-pressure pipe and the low-pressure pipe are also provided with an integrated pipe clamp, which is located between the connecting seat and the pressure plate and is used to limit the direction of the pipeline. The integrated pipe clamp has a plurality of elastic clamps for clamping the pipeline, and the elastic clamp has an opening. During installation, the high-pressure pipe and the low-pressure pipe pass through the opening and enter different elastic clamps.

[0015] By adopting the above technical scheme, the high-pressure filling valve is welded to the high-pressure pipe, and then the pressure plate is sleeved on the low-pressure pipe through the limiting hole, the low-pressure filling valve is welded to the low-pressure pipe, and then the high-pressure pipe and the low-pressure pipe are connected to the connecting seat, and then the integrated pipe clamp is sleeved on the high-pressure pipe and the low-pressure pipe, and the high-pressure pipe and the low-pressure pipe are pushed through the opening into different elastic clamping rings, and the pressure plate is rotated and buckled on the high-pressure pipe, and the front end parts of the high-pressure pipe and the low-pressure pipe are restricted in direction by the connecting seat and the integrated pipe clamp, and the rear end parts of the high-pressure pipe and the low-pressure pipe are restricted in direction by the integrated pipe clamp and the pressure plate, so as to realize the overall direction restriction of the high-pressure pipe and the low-pressure pipe, save the subsequent installation space, and thereby improve the stability of the pipeline assembly packaging and transportation, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0016] Optionally, the low-pressure filling valve and the high-pressure filling valve are both located between the integrated pipe clamp and the pressure plate, and the valve ports of the low-pressure filling valve and the high-pressure filling valve are oriented in the same direction.

[0017] By adopting the above technical solution, the low-pressure filling valve and the high-pressure filling valve are oriented in the same direction, so as to improve the convenience of refrigerant filling and leak detection and maintenance, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0018] Optionally, both the high-pressure sealing head and the low-pressure sealing head have an annular groove for installing a sealing ring.

[0019] By adopting the above technical solution, when the high-pressure pipe and the low-pressure pipe are connected to other components, the sealing ring is installed through the annular groove to improve the stability and sealing of the connection here.

[0020] Optionally, two annular grooves are provided on the high-pressure sealing head at intervals along the axial direction of the high-pressure sealing head, and two annular grooves are provided on the low-pressure sealing head at intervals along the axial direction of the low-pressure sealing head.

[0021] By adopting the above technical solution, the two annular grooves improve the sealing effect here.

[0022] Optionally, the connecting seat has a high-pressure channel for connecting the high-pressure pipe and a low-pressure channel for connecting the low-pressure pipe. The connecting seat is provided with a high-pressure column and a low-pressure column connected to the expansion valve. The high-pressure column has a high-pressure inner hole, and the low-pressure column has a low-pressure inner hole. The high-pressure channel is used to connect the high-pressure pipe and the high-pressure inner hole, and the low-pressure channel is used to connect the low-pressure pipe and the low-pressure inner hole.

[0023] By adopting the above technical solution, the high-pressure pipe is connected to the high-pressure channel, and the low-pressure pipe is connected to the low-pressure channel. The high-pressure fluid flows in the high-pressure pipe, the high-pressure channel, the high-pressure inner hole and the expansion valve, and the low-pressure fluid flows in the low-pressure pipe, the low-pressure channel, the low-pressure inner hole and the expansion valve. The connecting seat not only connects the high-pressure pipe, the low-pressure pipe and the expansion valve, but also restricts the direction between the high-pressure pipe and the low-pressure pipe, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0024] Optionally, the high-pressure channel includes a first channel and a second channel, and the first channel, the second channel and the high-pressure inner hole are interconnected; the low-pressure channel includes a third channel and a fourth channel, and the third channel, the fourth channel and the low-pressure inner hole are interconnected; the first channel and the third channel are welded with high-pressure pipes and low-pressure pipes respectively, and the second channel and the fourth channel are connected to different high-pressure pipes and low-pressure pipes through a pipeline connecting plate.

[0025] By adopting the above technical scheme, the high-pressure filling valve is welded to the high-pressure pipe, the pressure plate is set on the low-pressure pipe through the limiting hole, the low-pressure filling valve is welded to the low-pressure pipe, and then the high-pressure pipe is welded at the opening of the first channel, the front end of the low-pressure pipe is welded at the opening of the third channel, and then the pipeline connecting plate is connected to the connecting seat by bolts, so that the opening of the pipeline connecting plate is aligned with the openings of the second channel and the fourth channel, and then the integrated pipe clamp is set on the high-pressure pipe and the low-pressure pipe, and the high-pressure pipe and the low-pressure pipe are pushed through the opening into different elastic clamping rings, and the rotating pressure plate is buckled on the high-pressure pipe, so as to realize the overall direction restriction of the high-pressure pipe and the low-pressure pipe, so as to save subsequent installation space. When the high-pressure pipe and the low-pressure pipe are installed after leaving the factory, the different high-pressure pipes and the low-pressure pipes are connected to the second channel and the fourth channel through the pipeline connecting plate, and the multi-channel circulation of the fluid is realized through the connecting seat, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The connecting seat restricts the front end of the high-pressure pipe and the low-pressure pipe, and the pressure plate limits the rear end of the high-pressure pipe and the low-pressure pipe. The direction of the pipeline is restricted by the cooperation of the connecting seat and the pressure plate, so as to improve the convenience of controlling the direction of the pipeline layout. By controlling the direction of the pipeline layout, the installation space is saved, so as to improve the layout effect of the automobile air-conditioning pipeline.

[0028] 2. The front end of the high-pressure pipe and the low-pressure pipe are restricted in their direction by the connecting seat and the integrated pipe clamp, and the rear end of the high-pressure pipe and the low-pressure pipe are restricted in their direction by the integrated pipe clamp and the pressure plate, so as to limit the overall direction of the high-pressure pipe and the low-pressure pipe, save subsequent installation space, and thereby improve the stability of the pipeline assembly packaging and transportation, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0029] 3. The connector not only connects the high-pressure pipe, the low-pressure pipe and the expansion valve, but also restricts the direction between the high-pressure pipe and the low-pressure pipe. The connector can also realize multi-channel flow of the fluid, thereby improving the layout effect of the automobile air-conditioning pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of this application;

[0031] Figure 2 It is a schematic diagram of the overall structure of the connecting socket in this application;

[0032] Figure 3 is a schematic diagram of the location of the third channel in this application;

[0033] Figure 4 is a cross-sectional view of the connecting seat in the present application;

[0034] Figure 5 It is a schematic diagram of the connection between the connecting seat and the integrated pipe clamp and the subsequent pipeline in this application;

[0035] Figure 6 It is a schematic diagram of the structure of the high-pressure sealing head and the low-pressure sealing head in this application;

[0036] Figure 7 is a schematic diagram of the structure of the limiting hole and the limiting groove in the present application, wherein the pressing plate is partially cut away;

[0037] Figure 8 is a schematic diagram of the structure of the elastic part in the present application, wherein the pressing plate is in a state of not being connected to the high-pressure pipe;

[0038] Fig. 9 It is a structural schematic diagram of the integrated pipe clamp in this application.

[0039] Figure numerals: 1. high-pressure pipe; 11. high-pressure filling valve; 12. high-pressure sealing head; 13. annular groove; 14. water inlet pipe; 15. water outlet pipe; 2. low-pressure pipe; 21. low-pressure filling valve; 22. low-pressure sealing head; 3. connecting seat; 31. high-pressure channel; 311. first channel; 312. second channel; 32. low-pressure channel; 321. third channel; 322. fourth channel; 33. high-pressure column; 331. high-pressure inner hole; 34. low-pressure column; 341. low-pressure inner hole; 35. pipeline connecting plate; 351. connecting hole; 4. pressure plate; 41. limiting hole; 42. limiting groove; 43. elastic part; 431. elastic opening; 5. integrated pipe clamp; 51. elastic clamp ring. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-9 This application is described in further detail.

[0041] An embodiment of the present application discloses a pipeline assembly connected to a thermal expansion valve.

[0042] Reference Figure 1 A pipeline assembly connected to a thermal expansion valve comprises a high-pressure pipe 1, a low-pressure pipe 2, and a connecting seat 3 connecting the high-pressure pipe 1 and the low-pressure pipe 2 to the expansion valve, a high-pressure filling valve 11 is provided on the high-pressure pipe 1, a low-pressure filling valve 21 is provided on the low-pressure pipe 2, and a pressure plate 4 for limiting the direction of the high-pressure pipe 1 is provided on the low-pressure pipe 2. The connecting seat 3 is located at the front end of the high-pressure pipe 1 and the low-pressure pipe 2, and the pressure plate 4 is located at the rear end of the high-pressure pipe 1 and the low-pressure pipe 2.

[0043] Reference Figure 1 , Figure 2 and Figure 3 The connecting seat 3 has a high-pressure channel 31 for connecting the high-pressure pipe 1 and a low-pressure channel 32 for connecting the low-pressure pipe 2. The connecting seat 3 is provided with a high-pressure column 33 and a low-pressure column 34 connected to the expansion valve. The high-pressure column 33 has a high-pressure inner hole 331 passing through the high-pressure column 33, and the low-pressure column 34 has a low-pressure inner hole 341 passing through the low-pressure column 34. The high-pressure channel 31 is used to connect the high-pressure pipe 1 and the high-pressure inner hole 331, and the low-pressure channel 32 is used to connect the low-pressure pipe 2 and the low-pressure inner hole 341.

[0044] Reference Figure 1 , Figure 2 and Figure 4 The high-pressure channel 31 includes a first channel 311 and a second channel 312. The first channel 311, the second channel 312 and the high-pressure inner hole 331 are interconnected and their axes are perpendicular to each other. The opening of the first channel 311 is used to weld the high-pressure pipe 1. The low-pressure channel 32 includes a third channel 321 and a fourth channel 322. The third channel 321, the fourth channel 322 and the low-pressure inner hole 341 are interconnected. The axes of the third channel 321 and the fourth channel 322 coincide. The axis of the low-pressure inner hole 341 is perpendicular to the axes of the third channel 321 and the fourth channel 322. The opening ends of the third channel 321 and the fourth channel 322 are respectively located on the opposite side walls of the connecting seat 3. The opening of the third channel 321 is used to weld the low-pressure pipe 2.

[0045] Reference Figure 1 , Figure 4 and Figure 5 The axes of the second channel 312 and the fourth channel 322 are parallel, and the opening ends of the third channel 321 and the fourth channel 322 are located on the same side wall of the connecting seat 3. The second channel 312 and the fourth channel 322 are connected to different high-pressure pipes 1 and low-pressure pipes 2 through a pipeline connecting plate 35. The pipeline connecting plate 35 is connected to the side wall of the connecting seat 3 away from the high-pressure column 33 through bolts, and has two connecting holes 351 on the pipeline connecting plate 35, and the two connecting holes 351 correspond to the second channel 312 and the fourth channel 322 respectively.

[0046] Reference Figure 1 and Figure 6 The rear end of the high-pressure pipe 1 has a high-pressure sealing head 12, and the inner diameter of the high-pressure sealing head 12 is consistent with the inner diameter of the high-pressure pipe 1. The rear end of the low-pressure pipe 2 has a low-pressure sealing head 22, and the inner diameter of the low-pressure sealing head 22 is consistent with the inner diameter of the low-pressure pipe 2. The outer diameters of the high-pressure sealing head 12 and the low-pressure sealing head 22 gradually decrease from front to back. The pressure plate 4 is arranged at the low-pressure sealing head 22 and the high-pressure sealing head 12, and the pressure plate 4 is elastic.

[0047] Reference Figure 2 and Figure 6 The high-pressure column 33, the low-pressure column 34, the high-pressure sealing head 12 and the low-pressure sealing head 22 all have an annular groove 13 for installing a sealing ring. Taking the annular groove 13 on the high-pressure sealing head 12 as an example, the axis of the annular groove 13 is consistent with the axis of the high-pressure pipe 1. Two annular grooves 13 on the high-pressure sealing head 12 are arranged at intervals along the axial direction of the high-pressure sealing head 12, and two annular grooves 13 on the low-pressure sealing head 22 are arranged at intervals along the axial direction of the low-pressure sealing head 22.

[0048] Reference Figure 6 and Figure 7 The pressure plate 4 has a limiting hole 41 for limiting the low-pressure pipe 2. The part of the low-pressure pipe 2 close to the low-pressure sealing head 22 is coaxially penetrated in the limiting hole 41. One end of the pressure plate 4 close to the low-pressure sealing head 22 has a limiting groove 42 that coincides with the axis of the limiting hole 41. The limiting groove 42 is connected to the limiting hole 41, and the diameter of the limiting groove 42 is larger than the diameter of the limiting hole 41. The front end of the low-pressure sealing head 22 is pressed against the inner wall of the limiting groove 42.

[0049] Reference Figure 6 and Figure 8 The pressure plate 4 has an elastic portion 43 for clamping the high-pressure pipe 1. The elastic portion 43 has an elastic opening 431. The inner diameter of the elastic portion 43 is consistent with the outer diameter of the high-pressure pipe 1. During installation, the high-pressure pipe 1 enters the elastic portion 43 through the elastic opening 431.

[0050] Reference Figure 1 , Figure 5 and Fig. 9 An integrated pipe clamp 5 is also provided on the high-pressure pipe 1 and the low-pressure pipe 2. The integrated pipe clamp 5 is located between the connecting seat 3 and the pressure plate 4 and is used to limit the direction of the pipeline. The integrated pipe clamp 5 has a plurality of elastic clamps 51 for clamping the pipeline. The elastic clamp 51 is elastic. In this embodiment, four elastic clamps 51 made of rubber are taken as an example. The elastic clamp 51 is integrally injection molded with the integrated pipe clamp 5. The inner diameter of the elastic clamp 51 is consistent with the outer diameter of the pipeline to be fixed.

[0051] Reference Figure 1 , Figure 5 and Fig. 9The elastic clamp 51 has an opening along the circumference of the integrated pipe clamp 5. During installation, the high-pressure pipe 1 and the low-pressure pipe 2 enter different elastic clamps 51 through the openings. The other two elastic clamps 51 are respectively used to assemble the water inlet pipe 14 and the water outlet pipe 15 of the heat exchange. When the heat exchange system has only a cooling function, the other two elastic clamps 51 can also be used to fix the wiring harness.

[0052] Reference Figure 1 , Figure 5 and Fig. 9 The axis of the elastic clamp 51 on the integrated pipe clamp 5 for assembling the high-pressure pipe 1 coincides with the axis of the elastic part 43, and the axis of the elastic clamp 51 for assembling the low-pressure pipe 2 coincides with the axis of the limiting hole 41, that is, the high-pressure pipe 1 and the low-pressure pipe 2 located between the integrated pipe clamp 5 and the pressure plate 4 are parallel to each other and are straight segments.

[0053] Reference Figure 1 and Figure 5 The high-pressure filling valve 11 is welded on the high-pressure pipe 1 and is used to add refrigerant into the high-pressure pipe 1. The low-pressure filling valve 21 is welded on the low-pressure pipe 2 and is used to add refrigerant into the low-pressure pipe 2. The high-pressure filling valve 11 and the low-pressure filling valve 21 are both located between the integrated pipe clamp 5 and the pressure plate 4, and the valve ports of the high-pressure filling valve 11 and the low-pressure filling valve 21 are oriented in the same direction. In this embodiment, the welding distance between the high-pressure filling valve 11 and the low-pressure filling valve 21 is 80 mm, which can be adjusted according to production requirements in other embodiments.

[0054] Reference Figure 1 , Figure 4 and Figure 7 When manufacturing the pipeline assembly, first weld the high-pressure pipe 1 and the high-pressure filling valve 11 into a semi-finished pipe for standby use, assemble the pressure plate 4 on the low-pressure pipe 2, so that the part of the low-pressure pipe 2 close to the low-pressure sealing head 22 is coaxially penetrated in the limiting hole 41, and the front end of the low-pressure sealing head 22 is located in the limiting groove 42, then weld the low-pressure pipe 2 and the low-pressure filling valve 21 into a semi-finished pipe for standby use, weld the front end of the high-pressure pipe 1 to the opening of the first channel 311, weld the front end of the low-pressure pipe 2 to the opening of the third channel 321, and then connect the pipeline connecting plate 35 to the connecting seat 3 by bolts.

[0055] Reference Figure 1 , Figure 7 and Figure 8 Then, assemble the integrated pipe clamp 5 onto the high-pressure pipe 1 and the low-pressure pipe 2, push the high-pressure pipe 1 and the low-pressure pipe 2 into different elastic clamp rings 51, and the elastic clamp rings 51 clamp and limit the high-pressure pipe 1 and the low-pressure pipe 2. Then rotate the pressure plate 4 so that the elastic part 43 is buckled on the high-pressure pipe 1, and at the same time, the front end of the low-pressure sealing head 22 is pressed against the inner wall of the limiting groove 42, so as to realize the positioning of the low-pressure pipe 2 and the high-pressure pipe 1 in the direction of restriction. Finally, assemble the sealing rings of the required specifications on all the annular grooves 13 to complete the production.

[0056] Reference Figure 1 The connecting seat 3 limits the front ends of the high-pressure pipe 1 and the low-pressure pipe 2, and the pressure plate 4 limits the rear ends of the high-pressure pipe 1 and the low-pressure pipe 2. The direction of the pipeline is restricted by the cooperation of the connecting seat 3 and the pressure plate 4, thereby improving the convenience of controlling the direction of the pipeline layout. At the same time, the integrated pipe clamp 5 is cooperated to control the direction of the pipeline layout, thereby improving the stability of the packaging and transportation of the pipeline assembly, and the multi-channel circulation of the fluid can be realized through the connecting seat 3, saving subsequent installation space, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0057] The working principle of the embodiment of the present application is as follows:

[0058] The connecting seat 3 restricts the front ends of the high-pressure pipe 1 and the low-pressure pipe 2, and the pressure plate 4 limits the rear ends of the high-pressure pipe 1 and the low-pressure pipe 2. The direction of the pipeline is restricted by the cooperation of the connecting seat 3 and the pressure plate 4, thereby improving the convenience of controlling the direction of the pipeline layout. At the same time, the integrated pipe clamp 5 is cooperated to control the direction of the pipeline layout, thereby improving the stability of the packaging and transportation of the pipeline assembly. In addition, the connecting seat 3 can realize multi-channel circulation of the fluid, saving subsequent installation space, thereby improving the layout effect of the automobile air-conditioning pipeline.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipeline assembly connected to a thermal expansion valve, characterized in that: The invention comprises a high-pressure pipe (1), a low-pressure pipe (2), and a connecting seat (3) for connecting the high-pressure pipe (1) and the low-pressure pipe (2) to an expansion valve; the high-pressure pipe (1) is provided with a high-pressure filling valve (11); the low-pressure pipe (2) is provided with a low-pressure filling valve (21); the low-pressure pipe (2) is provided with a pressure plate (4) for limiting the direction of the high-pressure pipe (1); the connecting seat (3) is located at the front end of the high-pressure pipe (1) and the low-pressure pipe (2); and the pressure plate (4) is located at the rear end of the high-pressure pipe (1) and the low-pressure pipe (2).

2. A pipeline assembly connected to a thermal expansion valve according to claim 1, characterized in that: The high-pressure pipe (1) has a high-pressure sealing head (12) at the rear end, and the inner diameter of the high-pressure sealing head (12) is consistent with the inner diameter of the high-pressure pipe (1). The low-pressure pipe (2) has a low-pressure sealing head (22) at the rear end, and the inner diameter of the low-pressure sealing head (22) is consistent with the inner diameter of the low-pressure pipe (2). The outer diameters of the high-pressure sealing head (12) and the low-pressure sealing head (22) gradually decrease from front to back, and the pressure plate (4) is arranged at the low-pressure sealing head (22) and the high-pressure sealing head (12).

3. A pipeline assembly connected to a thermal expansion valve according to claim 2, characterized in that: The pressure plate (4) has a limiting hole (41) for limiting the position of the low-pressure pipe (2); a portion of the low-pressure pipe (2) close to the low-pressure sealing head (22) is coaxially inserted into the limiting hole (41); the pressure plate (4) has an elastic portion (43) for clamping the high-pressure pipe (1); the elastic portion (43) has an elastic opening (431); during installation, the high-pressure pipe (1) enters the elastic portion (43) through the elastic opening (431).

4. A pipeline assembly connected to a thermal expansion valve according to claim 3, characterized in that: One end of the pressure plate (4) close to the low-pressure sealing head (22) has a limiting groove (42) that coincides with the axis of the limiting hole (41); the diameter of the limiting groove (42) is larger than the diameter of the limiting hole (41); and the front end of the low-pressure sealing head (22) is tightly pressed against the limiting groove (42).

5. A pipeline assembly connected to a thermal expansion valve according to claim 2, characterized in that: The high-pressure pipe (1) and the low-pressure pipe (2) are also provided with an integrated pipe clamp (5), the integrated pipe clamp (5) being located between the connecting seat (3) and the pressing plate (4) and being used to limit the direction of the pipes, the integrated pipe clamp (5) having a plurality of elastic clamps (51) for clamping the pipes, the elastic clamps (51) having openings, and during installation, the high-pressure pipe (1) and the low-pressure pipe (2) pass through the openings and enter different elastic clamps (51).

6. A pipeline assembly connected to a thermal expansion valve according to claim 5, characterized in that: The low-pressure filling valve (21) and the high-pressure filling valve (11) are both located between the integrated pipe clamp (5) and the pressure plate (4), and the valve ports of the low-pressure filling valve (21) and the high-pressure filling valve (11) are oriented in the same direction.

7. A pipeline assembly connected to a thermal expansion valve according to claim 2, characterized in that: The high-pressure sealing head (12) and the low-pressure sealing head (22) are both provided with an annular groove (13) for installing a sealing ring.

8. A pipeline assembly connected to a thermal expansion valve according to claim 7, characterized in that: Two annular grooves (13) located on the high-pressure sealing head (12) are spaced apart along the axial direction of the high-pressure sealing head (12), and two annular grooves (13) located on the low-pressure sealing head (22) are spaced apart along the axial direction of the low-pressure sealing head (22).

9. A pipeline assembly connected to a thermal expansion valve according to claim 1, characterized in that: The connection seat (3) is provided with a high-pressure channel (31) for connecting the high-pressure pipe (1) and a low-pressure channel (32) for connecting the low-pressure pipe (2); the connection seat (3) is provided with a high-pressure column (33) and a low-pressure column (34) connected to the expansion valve; the high-pressure column (33) has a high-pressure inner hole (331); the low-pressure column (34) has a low-pressure inner hole (341); the high-pressure channel (31) is used to connect the high-pressure pipe (1) and the high-pressure inner hole (331); the low-pressure channel (32) is used to connect the low-pressure pipe (2) and the low-pressure inner hole (341).

10. A pipeline assembly connected to a thermal expansion valve according to claim 9, characterized in that: The high-pressure channel (31) comprises a first channel (311) and a second channel (312); the first channel (311), the second channel (312) and the high-pressure inner hole (331) are interconnected; the low-pressure channel (32) comprises a third channel (321) and a fourth channel (322); the third channel (321), the fourth channel (322) and the low-pressure inner hole (341) are interconnected; the first channel (311) and the third channel (321) are respectively welded to the high-pressure pipe (1) and the low-pressure pipe (2); the second channel (312) and the fourth channel (322) are connected to different high-pressure pipes (1) and low-pressure pipes (2) via a pipe connection plate (35).

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