Novel vibration and noise reducing expansion valve

Abstract

The invention discloses a novel vibration and noise reducing expansion valve. The novel vibration and noise reducing expansion valve comprises a valve body and a heating power head assembly mounted at the top of the valve body, wherein the heating power head assembly comprises an upper cover and a lower cover which are fixed together, a membrane which can change according to the temperature and pressure variation of a refrigerant of an evaporator is fixed between the upper cover and the lower cover, a push block is arranged below the membrane, a vibration preventing clip is arranged on the lower cover, and the vibration preventing clip is clamped on the inner wall part of the lower cover and can move up and down on the inner wall of the lower cover; and the vibration preventing clip comprises a base sheet, at least three elastic sheets are uniformly fixed to the outer contour surface of the base sheet and are arranged in a bent manner, a through hole is formed in the center of the base sheet, at least three elastic clamping sheets which are uniformly arranged are fixed to the inner contour surface of the through hole, and the elastic clamping sheets are arranged in a bent manner and clamp the push block. By utilizing the vibration preventing clip, a damping function can be well performed on the push block, so that the vibration of a push rod can be synchronously inhibited, and a great vibration inhibiting effect is played on the expansion valve. The expansion valve is worthy of popularization and application.

Description

technical field [0001] The invention relates to a throttle valve, in particular to an expansion valve used in an automobile air conditioner to regulate refrigerant flow. Background technique [0002] The expansion valve is an important part of the refrigeration system, and is generally installed between the liquid storage cylinder and the evaporator. The expansion valve throttles the medium-temperature and high-pressure liquid refrigerant into a low-pressure and low-temperature wet vapor, and enters the evaporator to absorb heat to achieve refrigeration. The expansion valve can control the flow of the valve through the superheat at the end of the evaporator to prevent the phenomenon of insufficient utilization of the evaporator area or frosting. [0003] If the structural design of the expansion valve is poor, it will vibrate during operation. The main source of vibration is that the refrigerant from the evaporator directly impacts the slender push rod of the valve core, cau...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the above-mentioned shortcomings of the prior art, and provides an expansion valve capable of damping vibration and noise, satisfying that some expansion valves can not install vibration-damping components in the middle of the push rod, and can also achieve vibration reduction and noise reduction for the push rod. needs

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