Title:
ベーンスプール型方向切換弁とこれを利用した冷凍サイクル用4方向制御弁
Document Type and Number:
Japanese Patent JP2005518508
Kind Code:
A
Abstract:
A vaned spool type directional control valve used to change a direction of motion of an actuator in an air pressure or oil hydraulic circuit includes a vaned spool having a valve portion and a vane portion integrally formed on a spool shaft. A chamber including a shaft support portion, a valve room, and a vane room is formed corresponding to the vaned spool. Main ports connected to the valve room in the chamber and two vane ports penetrating the opposed sides of the vane room are formed in the directional control valve. The directional control valve is of a pilot operated type so that flow of fluid in a main circuit can be changed by rotating the vane spool using the pressure of a pilot fluid.
Inventors:
Yoon Bun
Application Number:
JP2003570612A
Publication Date:
June 23, 2005
Filing Date:
February 24, 2003
Export Citation:
Assignee:
Assel Tech Company Limited
International Classes:
F16K31/12; F15B13/04; F15B13/043; F16K11/052; F16K11/076; F16K11/085; F25B41/04; (IPC1-7): F16K31/12; F16K11/052
Attorney, Agent or Firm:
Takeshi Takada