A multi-way valve

By incorporating a rotary sealing assembly and a balance hole in the multi-way valve, the problem of the four-way valve's inability to switch directions under low pressure differentials is solved, enabling rapid and low-loss valve switching and improving the system's switching efficiency.

CN122129565APending Publication Date: 2026-06-02ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
Filing Date
2026-04-13
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing four-way valves cannot achieve effective switching when the pressure difference between the high-pressure side and the low-pressure side of the system is lower than the pressure difference required for switching.

Method used

A multi-way valve was designed. By setting a rotating sealing assembly between the slider and the upper valve seat, and using the balance hole to connect with the S channel, the high-pressure and low-pressure zones are balanced, reducing driving resistance. The balance hole on the slider is always connected to the S channel. Combined with the sealing assembly and the stop plate, rapid switching under different pressure differentials is achieved.

Benefits of technology

It enables rapid switching with low loss under different pressure differentials, reduces the driving force requirement, and improves the valve's switching efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122129565A_ABST
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Abstract

This invention provides a multi-way valve, including a valve body, a switching assembly, and D-channels and S-channels for connecting the compressor exhaust port and return port. The valve body includes a housing and upper and lower valve seats at the upper and lower ends of the housing. The D-channel connects to the side of the housing, and the S-channel connects to the center of the bottom of the lower valve seat. The switching assembly includes a slider and a driver for driving the slider to rotate. The slider is rotatably disposed between the upper and lower valve seats via a main shaft. A rotating sealing assembly is provided between the slider and the upper valve seat to isolate high-pressure and low-pressure areas. The driver is always connected to the S-channel through a balance hole on the slider. The pressure difference is eliminated or reduced by balancing the area S1 of the sealing assembly on the upper part of the slider and the contact area between the low-pressure area of ​​the lower S-channel and the slider, achieving upper and lower internal balance, reducing the impact on driving resistance, reducing the driving force of the valve, and achieving rapid switching with low loss under different pressure differences.
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