GAS PRESSURE ADJUSTMENT DEVICE

WIPO Patent Application WO/2022/222253

A1

A gas pressure adjustment device, comprising an upper shell, a lower shell, a pressure adjustment cavity and a diaphragm assembly, wherein one end of the lower shell is provided with an air inlet and a valve port for communicating the air inlet with the pressure adjustment cavity, and the other end of the lower shell is provided with an air outlet; the lower shell is provided with a first fulcrum, and the upper shell is correspondingly provided with a second fulcrum; one end of the diaphragm assembly passes through a channel between the first fulcrum and the second fulcrum and is connected to a side wall at one end of the pressure adjustment cavity, and the other end of the diaphragm assembly is connected to a side wall at the other end of the pressure adjustment cavity; the diaphragm assembly can rotate about the first fulcrum or the second fulcrum to adjust the opening degree of the valve port; and an elastic reset member is arranged between the other end of the diaphragm assembly and the upper shell. The gas pressure adjustment device is simple in terms of structure and small in terms of the number of parts, and same can effectively reduce the risk of unsafe conditions such as product leakage caused by a part failure, thereby effectively ensuring a stable pressure adjustment performance.

ZHANG FENG (CN)
WEI YUNNAN (CN)
WANG YANHUA (CN)
REN HONGBIN (CN)

PCT/CN2021/099603

October 27, 2022

June 11, 2021

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NINGBO WANAN CO LTD (CN)

F16K17/34

US4630641A	1986-12-23
GB2190001A	1987-11-11
CN214618039U	2021-11-05
CN113090798A	2021-07-09
CN113339555A	2021-09-03
CN209959955U	2020-01-17
CN109185516A	2019-01-11

NINGBO WITS IP SERVICES CO., LTD (CN)

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