公开(公告)号：US20220326197A1

公开(公告)日：2022-10-13

申请号：US17764613

申请日：2020-09-10

申请人： HITACHI HIGH-TECH CORPORATION

发明人： Ayano OTSUBO ,  Nobuhiro TSUKADA ,  Hisao INAMI ,  Shoji TOMIDA ,  Mitsuhiko UEDA ,  Daisuke AKIEDA ,  Kenichiro NISHIKI

IPC分类号： G01N30/38 ,  F16K11/074

摘要： A flowpath switch valve is configured for extended service life by spreading the region, of the sliding surfaces of a stator and a rotor, that is subject to wear over the entirety of the sliding surfaces. The stator has fixed stator flowpaths, and the rotor has rotor flowpaths. A flowpath switch valve, depending on the rotor rotation state, realizes connection patterns that include: a first connection pattern wherein a rotor flowpath 241 connects a fixed stator flowpath 31 and a fixed stator flowpath 32; a second connection pattern wherein the rotor flowpath 241 connects the fixed stator flowpath 31 and a fixed stator flowpath 36; a third connection pattern wherein a rotor flowpath 242 connects the fixed stator flowpath 31 and the fixed stator flowpath 32; and a fourth connection pattern wherein the rotor flowpath 242 connects the fixed stator flowpath 31 and the fixed stator flowpath 36.