Fixing structure of connecting pipe and valve seat and processing method thereof

Abstract

The invention provides a fixing structure of a connecting pipe and a valve seat and a processing method thereof. The fixing structure of the connecting pipe and the valve seat includes a valve body (1), the valve seat (2), the connecting pipe (3) and a welding ring (4). The valve body (1) is provided with a mounting hole. The valve seat (2) is arranged in the mounting hole. The connecting pipe (3)sleeves the valve seat (2). The welding ring (4) sleeves the periphery of the connecting pipe (3), and a gap is formed between at least a part of the inner peripheral wall of the welding ring (4) andthe outer peripheral wall of the connecting pipe (3) along the circumferential direction; or the welding ring (4) sleeves the periphery of the valve seat (2), and a gap is formed between at least a part of the inner peripheral wall of the welding ring (4) and the outer peripheral wall of the valve seat (2) along the circumferential direction. The invention provides a fixing structure of a connecting pipe and a valve seat and a processing method thereof. The fixing structure of the connecting pipe and the valve seat can solve the problem in the prior art that solder is prone to climb along theconnecting pipe, resulting in welding leakage.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a fixing structure and a processing method for connecting pipes and valve seats used in refrigeration systems such as air conditioners and refrigerators. Background technique [0002] The electronic expansion valve is an electromagnetic control component, which is used in the industrial control system to control the on-off of the medium or adjust the flow of the medium and other parameters, so as to achieve the expected control. In the refrigeration system, the electronic expansion valve is used to adjust the cooling capacity of the evaporator, supply the optimum amount of refrigerant to the evaporator, and ensure the stable operation of the refrigeration system. The electronic expansion valve structure in the prior art, such as the Japanese patent (JP2009-162369), discloses an electronic expansion valve, the outlet connecting pipe and the valve seat are directly inserte...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fixing structure and processing method for the connecting pipe and the valve seat, so as to solve the problem in the prior art that the solder is easy to climb along the connecting pipe, resulting in missing welding

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