Invention Grant
US07815165B2 Valve device having barrier for suppressing transmission of pulsating waves 有权
具有用于抑制脉动波传播的屏障的阀装置

  • Patent Title: Valve device having barrier for suppressing transmission of pulsating waves
  • Patent Title (中): 具有用于抑制脉动波传播的屏障的阀装置
  • Application No.: US12007310
    Application Date: 2008-01-09
  • Publication No.: US07815165B2
    Publication Date: 2010-10-19
  • Inventor: Hideki Okuda
  • Applicant: Hideki Okuda
  • Applicant Address: JP Kariya
  • Assignee: Denso Corporation
  • Current Assignee: Denso Corporation
  • Current Assignee Address: JP Kariya
  • Agency: Nixon & Vanderhye PC
  • Priority: JP2007-138104 20070524
  • Main IPC: F16K47/00
  • IPC: F16K47/00
Valve device having barrier for suppressing transmission of pulsating waves
Abstract:
A present invention is advantageously applied to a purge valve for purging evaporated fuel stored in a canister to an intake pipe of an engine. The purge valve has a fluid passage connecting an inlet port and an outlet port, and a normally closed valve port that is selectively opened by operation of an electromagnetic actuator is disposed in the fluid passage. A barrier pillar is disposed in the fluid passage between the inlet port and the valve port to suppress transmission of pulsating waves generated in the purge valve to the canister. Flow resistance of the barrier pillar is higher in a reverse flow direction from the valve port to the inlet port than in a normal flow direction from the inlet port to the valve port. The transmission of the pulsating waves is well suppressed by the barrier pillar while allowing a smooth flow from the canister into the purge valve.
Information query
Patent Agency Ranking
0/0