Air conditioning system pipeline piece

Abstract

The utility model provides an air conditioning system pipeline piece which comprises a main pipe and at least one throttle pipe on the main pipe, a plurality of groups of mounting holes are formed in the main pipe, each mounting hole comprises a front end hole and a rear end hole corresponding to the front end hole, each throttle pipe comprises a main body part and a mounting part, the tail end of each mounting part is a closed end, and the diameter of each mounting part is smaller than that of the main body part. A positioning table is formed therebetween; the installation part is inserted into the front end hole, the positioning table abuts against the inner wall of the main pipe, the closed end of the installation part protrudes out of the outer circumferential face of the main pipe, the installation part and the main body part are welded and fixed to the main pipe, and a through hole is formed in the part, located in the main pipe, of the main body part. The mounting part and the main body part of the throttle pipe are respectively fixed with the main pipe in a welding manner, so that two fixing points are arranged between each throttle pipe and the main pipe, the throttle pipes and the main pipe are convenient to seal and weld, the reliability is high, and the overall structural stability of a pipeline piece is good.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioning refrigeration system, and particularly relates to an air conditioning system pipe fitting. BACKGROUND

[0002] In an automobile air conditioner, the throttling assembly is an important component of the refrigeration device, which mainly functions to realize throttling from the condensing pressure to the evaporating pressure and control the flow of the refrigerant. Liquid condensate enters the throttling pipe from the main pipe, then passes through the pressure relief valve to perform refrigeration. The main pipe and the throttling pipe both need to have good stability, and the connection part needs to have good sealing performance, so as to ensure the normal operation of the automobile air conditioning system. In the prior art, the end of the throttling pipe is directly welded to one side of the main pipe. The local stress condition of the side wall of the main pipe is not good, and the welding operation is difficult. The throttling pipe is prone to deflection and displacement, and the welding precision is not easy to guarantee. Therefore, it is necessary to improve the existing air conditioning system pipe fitting. SUMMARY

[0003] Therefore, the present application aims to overcome the defects in the prior art and provides an air conditioning system pipe fitting.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] An air conditioning system pipe fitting, comprising a main pipe and at least one throttling pipe on the main pipe, a plurality of mounting holes are arranged on the main pipe, each mounting hole comprises a front end hole and a rear end hole arranged corresponding to the front end hole, the throttling pipe comprises a main body part and a mounting part, the end of the mounting part is a closed end, and the diameter of the mounting part is smaller than that of the main body part, thereby forming a positioning table between the two; the mounting part is inserted into the front end hole, the positioning table abuts against the inner wall of the main pipe, the closed end of the mounting part protrudes from the outer circumferential surface of the main pipe, and the mounting part and the main body part are both welded and fixed to the main pipe, and a through hole is arranged at the part of the main body part inside the main pipe.

[0006] Further, the through hole comprises a left end hole and a right end hole arranged corresponding to the main body part, the left end hole and the right end hole are the same in size, and the two are coaxially arranged.

[0007] Further, the surface of the positioning table has an arc surface structure matched with the inner wall of the main pipe.

[0008] Further, the axis of the through hole is parallel to the axis of the main pipe.

[0009] Further, the axis of the through hole coincides with the axis of the main pipe.

[0010] Further, the mounting part and the outer wall of the main pipe are welded by using an annular weld.

[0011] Further, the main body part and the outer wall of the main pipe are welded by using an annular weld.

[0012] Further, the diameter of the through hole is the same as the diameter of the throttle pipe, or the diameter of the through hole is larger than the diameter of the throttle pipe.

[0013] Compared with the prior art, the application has the following advantages:

[0014] The application has simple structure and reasonable design. The mounting part of the throttle pipe is inserted into the distal hole of the main pipe. The mounting part and the main part of the throttle pipe are fixed to the main pipe by welding, so that each throttle pipe has two fixed points with the main pipe. The throttle pipe and the main pipe have good sealing property. The positioning table between the mounting part and the main part limits the main pipe, improves the welding precision, and is convenient and reliable for welding. The overall structure of the pipeline is stable. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for a purpose of explanations and are not intended as improper limitations to the present application. In the drawings:

[0016] Fig. 1 A structural schematic view of the present application;

[0017] Fig. 2 A structural sectional view of the present application;

[0018] Fig. 3 A schematic view of the throttle pipe in the present application;

[0019] Fig. 4 A schematic view of the main pipe in the present application. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] An air conditioning system piping component, such as Figs. 1 to 4 As shown, the device includes a main pipe 1 and at least one throttling tube 2 on the main pipe. The main pipe has an array of mounting holes 3, each including a front end hole 4 and a corresponding rear end hole 5. The throttling tube includes a main body 6 and a mounting part 7. The mounting part has a closed end, and its diameter is smaller than that of the main body, forming a positioning platform 8 between them. The mounting part is inserted into the front end hole, the positioning platform abuts against the inner wall of the main pipe, and the closed end 12 of the mounting part protrudes from the outer circumference of the main pipe.

[0025] Typically, the length of the mounting part extending beyond the main pipe is less than 5mm, that is, the distance between the outer end face of the closed end and the outer circumferential surface of the main pipe is less than 5mm. Both the mounting part and the main body are welded and fixed to the main pipe, and a through hole 9 is provided in the part of the main body inside the main pipe. To ensure the normal operation of the pipeline components, the diameter of the through hole is the same as the diameter of the throttling pipe, or the diameter of the through hole is larger than the diameter of the throttling pipe.

[0026] The through-hole includes a left-end hole 10 and a right-end hole 11 correspondingly provided on the main body. It should be noted that the left and right end holes in this invention are used for ease of describing structural features; left and right are relative terms and not specific directional limitations. The left and right end holes are the same size and are coaxially arranged. To improve the stability of the fit between the throttling tube and the main pipe, an arc-shaped structure matching the inner wall of the main pipe is provided on the surface of the positioning platform. The axis of the through-hole is parallel to the axis of the main pipe. Alternatively, the axis of the through-hole coincides with the axis of the main pipe.

[0027] Preferably, the mounting part is welded to the outer wall of the main pipe using an annular weld 13, and the main body is welded to the outer wall of the main pipe using an annular weld. By welding the mounting part and the main body to both sides of the main pipe, that is, the throttling pipe is simultaneously fixed to both sides of the main pipe, the reliability of the connection between the throttling pipe and the main pipe is increased, the overall stability of the pipeline components is high, and the main pipe and the throttling pipe are fixed at two locations, resulting in good stress distribution at the connection point.

[0028] This invention features a simple and reasonable structure. The throttling tube is inserted into the distal hole of the main pipe. The throttling tube mounting part and the main body are fixed to the main pipe by welding, so that each throttling tube has two fixing points with the main pipe. Furthermore, the throttling tube and the main pipe are sealed by a circumferential weld, which effectively ensures the sealing performance of the pipeline component. The positioning platform between the mounting part and the main body forms a limit with the main pipe, which improves the welding accuracy, facilitates welding and manufacturing, has high reliability, and provides good overall structural stability of the pipeline component.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air conditioning system tubing component, characterized by: The throttle pipe comprises a main pipe and at least one throttle pipe on the main pipe, the main pipe is provided with a plurality of mounting holes, each of the mounting holes comprises a front end hole and a rear end hole arranged corresponding to the front end hole, the throttle pipe comprises a main body part and a mounting part, the mounting part is closed at the end, and the diameter of the mounting part is smaller than that of the main body part, thereby forming a positioning platform between the mounting part and the main body part; The mounting part is inserted into the front end hole, the positioning platform is abutted against the inner wall of the main pipe, the closed end of the mounting part protrudes from the outer circumferential surface of the main pipe, the mounting part and the main body part are welded and fixed to the main pipe, and a through hole is arranged on the part of the main body part in the main pipe.

2. An air conditioning system tubing component as set forth in claim 1, characterized by: The through hole comprises a left end hole and a right end hole arranged corresponding to the main body part, the left end hole and the right end hole are of the same size, and the two are coaxially arranged.

3. An air conditioning system tubing component as set forth in claim 1, characterized by: The surface of the positioning platform has an arc structure matched with the inner wall of the main pipe.

4. An air conditioning system tubing component as set forth in claim 1, characterized by: The axis of the through hole is parallel to the axis of the main pipe.

5. An air conditioning system tubing component as set forth in claim 1, characterized by: The axis of the through hole is coincident with the axis of the main pipe.

6. An air conditioning system tubing component as set forth in claim 1, characterized by: The mounting part and the outer wall of the main pipe are welded by using an annular weld.

7. An air conditioning system tubing component as set forth in claim 1, characterized by: The main body part and the outer wall of the main pipe are welded by using an annular weld.

8. An air conditioning system tubing component as set forth in claim 1, characterized by: The diameter of the through hole is the same as or larger than the diameter of the throttle pipe.

Images