FLOW PATH SWITCHING VALVE

WIPO Patent Application WO/2023/171022

A1

The present invention performs calibration of the rotation range of a valve member.　A flow path switching valve (10) comprises: a valve body (14) in which a valve chamber (12) is formed and that has a plurality of fluid inlet and outlet ports (24, 26, 28) formed in a wall surface forming the valve chamber (12); a valve member (16) that has a valve shaft (48), is rotatably disposed in the valve chamber (12), and is formed with a flow path (36); a sealing part (38) that is disposed to surround the peripheries of openings (36A, 36B) of the flow path (36) of the valve member (16), and seals between the inlet and outlet ports (24, 26, 28) and the valve member (16) in a state in which the openings (36A, 36B) and the inlet and outlet ports (24, 26, 28) face each other; and a rotary drive unit (18) that rotates the valve member (16) by means of the valve shaft (48) so as to selectively switch the communication state of the plurality of inlet and outlet ports through the flow path (36) of the valve member (16), and that is capable of detecting the angular position of the valve member (16). Stoppers (44, 46) that restrict further rotation of the valve member at at least one of the upper limit and lower limit of the rotation range of the valve disc are provided inside the valve body (14).

KITABAYASHI HAYATO (JP)
HARA SEIICHI (JP)

PCT/JP2022/039998

September 14, 2023

October 26, 2022

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FUJIKOKI CORP (JP)

F16K11/085

JP2016053415A	2016-04-14
JP2018054122A	2018-04-05
US20210102632A1	2021-04-08

TAIYO, NAKAJIMA & KATO (JP)

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