CN212643773U

CN212643773U - Pipeline structure for automobile air-conditioning system

Info

Publication number: CN212643773U
Application number: CN202021194576.3U
Authority: CN
Inventors: 夏雷鸣; 张振兴; 李立涛; 刘静; 王强
Original assignee: Hebei Chinaust Automotive Plastics Co Ltd
Current assignee: Hebei Chinaust Automotive Plastics Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-02
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a pipeline structure for vehicle air conditioning system, include the pipeline body and connect at the two terminal clamp plates of pipeline body, wherein the material of pipeline body is the nylon material and forms through extrusion thermoforming, the material of clamp plate also is the nylon material and forms through injection moulding, pipeline body and clamp plate laser welding fixed connection. Implement the utility model discloses, through all setting up pipeline body and clamp plate to the nylon material, alleviateed the weight of body to through extruding the shape requirement that thermal forming technology formed in order to reach the pipeline, the nylon material has improved the corrosion resistance of pipeline body, has advantages such as less volume, longer life, lower refrigerant infiltration volume.

Description

Pipeline structure for automobile air-conditioning system

Technical Field

The utility model relates to a vehicle air conditioning system accessory technical field, more specifically relate to a pipeline structure for vehicle air conditioning system.

Background

At present, a pipeline commonly used in an automobile air conditioning system is a pipeline formed by connecting an aluminum metal pipe 2 and a rubber pipe 1, and a buckling and pressing process is used at the joint (as shown in figure 1). The traditional mode that aluminium system tubular metal resonator 2 and rubber tube 1 are connected not only appears the infiltration of refrigerant easily, the ageing of rubber tube 1, can appear simultaneously because the not enough shortcoming that leads to unsuitable installation of pipeline flexibility. And the vibration when the vehicle travels can cause the wearing and tearing of other parts to rubber tube 1, and the phenomenon that becomes flexible can appear along with the time growth in the connection of air conditioner clamp plate department, easily leaks, and then produces the leakage of refrigerant, takes place dangerously.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art not enough, the utility model provides a pipeline structure for vehicle air conditioning system through all setting up pipeline body and clamp plate to the nylon material, has alleviateed the weight of body to form the shape requirement in order to reach the pipeline through extruding thermoforming technology, the nylon material has improved the corrosion resistance of pipeline body.

The utility model discloses the technological effect that will reach is realized through following scheme: the utility model provides a pipeline structure for vehicle air conditioning system, includes the pipeline body and connects at the clamp plate at pipeline body both ends, wherein the material of pipeline body is the nylon material and forms through extrusion thermoforming, the material of clamp plate also is the nylon material and forms through injection moulding, pipeline body and clamp plate laser welding fixed connection.

Preferably, the pipeline body is formed by extrusion molding of a single-layer nylon material.

Preferably, the pipeline body comprises three layers to five layers of nylon materials from inside to outside, and the nylon materials are simultaneously extruded and formed.

Preferably, the nylon materials of the middle layer to the three layers have good barrier property for the air-conditioning refrigerant, and the nylon materials of the inner layer and the outer layer respectively have good corrosion resistance for the medium.

Preferably, the nylon material is one of PA612, PA610 and PA 12.

Preferably, the tightness of the joint of the pressure plate and the pipeline body requires no leakage within 3 minutes when a gas tightness test is carried out under a nitrogen environment of 2.5 MPa.

The utility model has the advantages of it is following:

1. the pipeline body and the pressure plate are both made of nylon materials, so that the weight of the pipe body is reduced, the pipe body is formed by an extrusion thermal forming process to meet the shape requirement of the pipeline, and the corrosion resistance of the pipeline body is improved by the nylon materials;

2. under the same function, compared with the traditional pipeline combination after the metal pipe and the rubber pipe are pressed, the pipeline structure of the utility model has the advantages of smaller volume, longer service life, lower refrigerant permeation quantity, etc.;

3. the two tail ends of the pipeline are connected with the automobile by adopting the pressing plates, so that the assembly is easier, and the sealing performance is better;

4. the utility model discloses a pipeline body in the pipeline for the vehicle air conditioning system and the volume of clamp plate can reduce about 40%, and weight can reduce about 50%, and ageing inefficacy's problem can not appear in the pipeline.

Drawings

FIG. 1 is a schematic plan view of a prior art piping structure for an automotive air conditioning system;

fig. 2 is a schematic plan view of a pipeline structure for an automotive air conditioning system according to the present invention;

fig. 3 is the utility model discloses in a section structure schematic diagram of tubular construction three-layer for vehicle air conditioning system.

Detailed Description

The invention is described in detail below with reference to the drawings, wherein examples of the embodiments are shown in the drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the interconnection of two elements or through the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 2, the embodiment of the utility model provides a pipeline structure for vehicle air conditioning system, including pipeline body 10 and the clamp plate 20 of connection at pipeline body 10 both ends, wherein the material of pipeline body 10 is the nylon material and forms through extrusion thermoforming, the material of clamp plate 20 also is the nylon material and forms through injection moulding, pipeline body 10 and clamp plate 20 laser welding fixed connection, because laser welding needs compressive stress to exist, must compress tightly pipeline body 10 welding part and clamp plate 20 welding part, just can well weld, therefore the leakproofness between clamp plate 20 and the pipeline body 10 after the laser welding is better, greatly reduced the risk that the coolant liquid leaked.

The utility model discloses a set up pipeline body 10 and clamp plate 20 all to the nylon material, alleviateed the weight of body to form the shape requirement in order to reach the pipeline through extruding the thermal forming technology, the nylon material has improved the corrosion resistance of pipeline body 10. Simultaneously, under the same function, compare with the pipeline combination after traditional tubular metal resonator + rubber tube crimping, the utility model discloses a pipeline structure has advantages such as less volume, longer life, lower refrigerant infiltration volume. In addition, the pressing plates 20 are adopted at the two tail ends of the pipeline to be connected with the automobile, so that the assembly is easier, and the sealing performance is better.

As a further improvement, the pipeline body 10 is formed by extrusion molding of single-layer nylon materials, and is small in size, light in weight, easy to assemble and better in flexibility.

As shown in fig. 3, as a further improvement of the present invention, the pipeline body 10 includes a three-layer to five-layer nylon material from inside to outside and simultaneously extrusion-molded to form (shown as a three-layer structure in fig. 3), wherein the nylon material of the middle layer to three-layer (b) has good separation performance for the air conditioning refrigerant, and the inside and outside one-layer to two-layer (a) layer nylon material has good corrosion resistance to the medium. The pipeline for the automobile air conditioning system is made of nylon materials with good environmental tolerance and extruded from the inner part and the outer part simultaneously, and the requirement on the use shape of the pipe is met by matching with an extrusion thermal forming process.

As a further improvement of the present invention, for the pipeline body 10 and the pressing plate 20 of the present invention, the nylon material is one of PA612 or PA610 or PA12, and can be made into a refrigerant-resistant, water-resistant and salt-resistant pipeline.

As a further improvement of the utility model, the tightness of the joint of the pressing plate 20 and the pipeline body 10 should be guaranteed to carry out the air-tight test under the nitrogen environment of 2.5MPa, and no leakage phenomenon exists within 3 minutes.

The utility model discloses a pipeline body 10 in the pipeline for the vehicle air conditioning system and clamp plate 20's volume can reduce about 40%, and weight can reduce about 50%, and the problem of ageing inefficacy can not appear in the pipeline, and the pipeline weight of the nylon mixed rubber material among the prior art is big, and the back of ageing inefficacy easily.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the embodiments of the present invention, and these modifications or equivalent substitutions cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a pipeline structure for vehicle air conditioning system, its characterized in that includes the pipeline body and connects at the clamp plate of pipeline body two ends, wherein the material of pipeline body is the nylon material and forms through extrusion thermoforming, the material of clamp plate also is the nylon material and forms through injection moulding, pipeline body and clamp plate laser welding fixed connection.

2. The piping structure of claim 1, wherein the piping body is formed by extrusion molding of a single nylon layer.

3. The air conditioning system duct structure of claim 1, wherein the duct body comprises three to five layers of nylon material from the inside to the outside and is formed by extrusion molding at the same time.

4. The piping structure of claim 3, wherein the nylon material of the middle layer to the three layers has good barrier property against air-conditioning refrigerant, and the nylon material of the inner and outer layers has good corrosion resistance against medium.

5. The piping structure of claim 1, wherein said nylon material is one of PA612, PA610 and PA 12.

6. The piping structure for an air conditioning system of an automobile according to claim 1, wherein the sealing property at the joint of said pressure plate and said piping body is required to be free from any leakage within 3 minutes when an air-tightness test is performed under a nitrogen atmosphere of 2.5 MPa.