Connector device of refrigerant pipe of car air conditioning system

Abstract

The invention discloses a connector device of a refrigerant pipe of a car air conditioning system. The connector device comprises a refrigerant pipe end. The inner diameter of the refrigerant pipe end is larger than that of a refrigerant pipe. The inner wall of the refrigerant pipe end is provided with internal threads. A taper-face pipe wall is arranged between the inner wall of the refrigerant pipe end and the inner wall of the refrigerant pipe. The connector device further comprises a connector pipe arranged in the refrigerant pipe end. The outer diameter of the connector pipe is slightly smaller than the inner diameter of the refrigerant pipe end. The inner diameter of the connector pipe equals that of the refrigerant pipe. End faces of the two ends of the connector pipe are tapered end faces, wherein the first tapered end face close to the refrigerant pipe makes surface-to-surface contact with the taper-face pipe wall, and the second tapered end face away from the refrigerant pipe can make surface-to-surface contact with the end face of the refrigerant pipe to be connected. Because the connector pipe and the refrigerant pipe are designed to be of a split structure, the connector pipe can be made of copper or copper alloy good in sealing effect while the refrigerant pipe can be made of rolled steel low in cost; thus, the requirement for the sealing performance of the connector is met, and the cost of the car air conditioning system is reduced as well.

Description

technical field [0001] The invention relates to an interface device of a refrigerant pipe of an automobile air-conditioning system, in particular to an interface device in which the interface part is separated from the main body of the refrigerant pipe of the automobile air-conditioning system. Background technique [0002] In the automobile air-conditioning system, the refrigerant pipe is an important component, which undertakes the important task of transporting refrigerant. Since the air conditioning system is composed of multiple parts, there are multiple refrigerant pipe interfaces, and the connection between these interfaces is realized by the interface device. [0003] Refrigerant is an important factor affecting the cooling effect of the air conditioning system. It is not only expensive, but also harmful to the human body. Therefore, any oil leakage at any refrigerant pipe interface will have a great impact on the cooling effect and safety of the car. Therefore, the...

AI Technical Summary

Problems solved by technology

[0005] The defect of the above-mentioned traditional refrigerant pipe interface is that: since the tapered contact surface inside the end is integrally formed with the refrigerant pipe body, they are all of the same material. If the refrigerant pipe is made of copper or copper alloy, the sealing effect is good, but the overall material cost is relatively high. High, if steel is used, the cost is lower but the sealing performance is insufficient, and there is a risk of refrigerant leakage

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