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Patent Searching and Data


Title:
FLOW PATH SWITCHING VALVE
Document Type and Number:
WIPO Patent Application WO/2013/069401
Kind Code:
A1
Abstract:
Provided is a rotary-type flow path switching valve having a rotor with an extended lifetime. This flow path switching valve is provided with a stator (1) and a rotor (2) which rotates while sliding relative to the stator (1). The stator (1) has ports (3) open at the sliding surface on which the rotor (2) slides in a rotating manner. The rotor (2) has a flow path groove (4) for connecting two or more of the ports (3). At the edges of the flow path groove (4), the rotor (2) is in contact with the sliding surface (6) between the rotor (2) and the stator (1) at a contact angle (α) greater than 120˚.

Inventors:
TANAKA SHINJI (JP)
Application Number:
PCT/JP2012/076274
Publication Date:
May 16, 2013
Filing Date:
October 11, 2012
Export Citation:
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Assignee:
SHIMADZU CORP (JP)
International Classes:
G01N30/26; F16K3/08
Domestic Patent References:
WO2011001941A12011-01-06
Foreign References:
JPS5819258U1983-02-05
JPH02218954A1990-08-31
JP2001205007A2001-07-31
Attorney, Agent or Firm:
Kyoto International Patent Law Office (JP)
Patent business corporation Kyoto international patent firm (JP)
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