Search International and National Patent Collections

1. (WO2017150026) VALVE DEVICE

Pub. No.:    WO/2017/150026    International Application No.:    PCT/JP2017/002844
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Jan 28 00:59:59 CET 2017
IPC: F16K 1/20
F02M 26/70
F02M 26/71
F16K 3/22
F16K 5/04
F16K 11/076
Applicants: DENSO CORPORATION
株式会社デンソー
Inventors: HAYASHI Hideki
林 秀樹
MORITANI Yuichiro
守谷 勇一朗
Title: VALVE DEVICE
Abstract:
Provided is a valve device comprising a shaft (14), a valve body (15), and a housing (16) which is provided with a valve opening (10a). The outwardly facing surfaces (25, 26, 30) of the valve body is provided without contact with the housing, and in a fully closed state in which the valve opening is closed by the valve body, a valve side surface is in contact with the housing. Valve seal surfaces (21, 22, 31, 32) comprise the first valve seal surface (21) which protrudes in the valve closing direction, and the second valve seal surface (22) which is recessed in the vale opening direction. A radial first seal distance (r1) from the outer diameter end of the first valve seal surface to a rotation axis (C2) is set to be less than a radial second seal distance (r2) from the outer diameter end of the second valve seal surface to the rotation axis. The first valve seal surface and the second valve seal surface have at least curved surfaces.