Electronic expansion valve

By designing a bracket and valve seat mating parts in the electronic expansion valve to form a flow channel, combined with a filter screen to buffer the flow rate and refine bubbles, the problem of high noise in the electronic expansion valve is solved, achieving smooth fluid flow and reduced noise.

CN122216865APending Publication Date: 2026-06-16HANGZHOU SANHUA RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU SANHUA RES INST CO LTD
Filing Date
2024-12-06
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing electronic expansion valves generate significant noise during fluid flow, especially since the filter screen is close to the valve port, making it difficult to effectively reduce fluid noise.

Method used

Design an electronic expansion valve including a valve seat, a bracket, a filter screen, and a valve seat mating component. By forming a flow passage between the bracket and the valve seat mating component, and with the filter screen located in the first channel, the fluid first passes through the cylinder cavity and the first channel to buffer the flow rate, and then passes through the flow passage. The filter screen refines large air bubbles to reduce noise.

Benefits of technology

It effectively reduces fluid flow noise, improves the smoothness of fluid flow, and extends the service life of the filter screen, while maintaining the smoothness of the fluid.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122216865A_ABST
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Abstract

This application provides an electronic expansion valve, which includes a valve seat and a valve port passage. The electronic expansion valve also includes a support, a filter screen, and a valve seat mating component. The support includes a cylindrical portion, and a flow passage is formed between the valve seat mating component and the cylindrical portion. The cylindrical portion includes a first channel, and the cylindrical cavity of the cylindrical portion is connected to the flow passage through the first channel. The filter screen is located in the first channel, so that during the operation of the electronic expansion valve, the fluid in the valve port passage can flow into the flow passage sequentially through the cylindrical cavity and the first channel. The cylindrical cavity of the cylindrical portion can buffer the flow rate of the fluid, thereby facilitating smooth fluid flow. Furthermore, the filter screen located in the first channel can refine large air bubbles in the fluid to reduce the noise of air bubble bursting in the fluid.
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