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Three-way bleed type proportional electromagnetic valve

  • US 7,036,525 B2
  • Filed: 05/06/2004
  • Issued: 05/02/2006
  • Est. Priority Date: 11/07/2003
  • Status: Expired due to Fees
First Claim
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1. A three-way bleed type proportional electromagnetic valve comprising:

  • a solenoid coil;

    a core that is excited by energizing the solenoid coil;

    a plunger on which magnetic attractive force is exerted from the core when the core is excited;

    a bleed valve element that is in contact with or separated from a first seat portion of a valve seat depending on the magnetic attractive force acting on the plunger;

    a housing that houses the valve seat and the bleed valve element and has an input port, an output port, and an ejection port for control by means of the bleed valve element a subject fluid supplied via the input port such that fluid having a predetermined output pressure is discharged at the output port; and

    a stop valve element that is disposed in a cylindrical shape in a flow passage between the input port and the output port so as to be in sliding contact with a wall of the flow passage and that is in contact with or separated from a second seat portion of the valve seat,wherein in controlling an output pressure to a minimum value the stop valve element is brought in contact with the valve seat so as to close the input port and to cause the output port and the ejection port to communicate with each other.

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