Title:
VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/006175
Kind Code:
A1
Abstract:
A valve device that comprises: a ball valve (1) that has a convex spherical ball surface (1a); and a valve seat (2) that has a concave spherical seat surface (2a) that is pressed onto the ball surface. The ball valve undergoes a rotational movement operation wherein the valve opens as a result of a valve opening (1b) that is formed in the ball valve and a seat opening (2b) that is formed in the valve seat being connected, and wherein the valve closes as a result of the openings being disconnected. The opening diameter (φ2) of the seat opening is smaller than the opening diameter (φ1) of the valve opening. The radius of curvature (R1) of the ball surface is equal to or less than the radius of curvature (R2) of the seat surface.
Inventors:
SEKO NAOHITO (JP)
YAMAMOTO YOSHIAKI (JP)
YOKOYAMA SHINICHI (JP)
NAKANO YUUJI (JP)
SANO RYO (JP)
YAMAMOTO YOSHIAKI (JP)
YOKOYAMA SHINICHI (JP)
NAKANO YUUJI (JP)
SANO RYO (JP)
Application Number:
PCT/JP2015/003131
Publication Date:
January 14, 2016
Filing Date:
June 23, 2015
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F16K5/20; F16K5/06
Foreign References:
| JPH09178004A | 1997-07-11 | |||
| JP2003515078A | 2003-04-22 | |||
| JP2012047239A | 2012-03-08 |
Other References:
See also references of EP 3168511A4
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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