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REGULATING DEVICE

  • US 20170248250A1
  • Filed: 05/11/2017
  • Published: 08/31/2017
  • Est. Priority Date: 10/29/2013
  • Status: Active Grant
First Claim
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1. A gas regulating device, comprisinga housing defining a gas inlet chamber having a gas inlet pressure and a gas outlet chamber having a gas outlet pressure, the housing further having a flow restriction seat that defines a flow path between the gas inlet chamber and the gas outlet chamber that extends along a flow axis;

  • a flow restriction valve movable relative to the flow restriction seat to adjust a flow between the gas inlet chamber and the gas outlet chamber in the flow path, wherein the flow restriction valve is movable along the flow axis of the flow path;

    a servo valve having a servo chamber in which a servo pressure is present, wherein the servo chamber is fluidly coupled to the gas inlet chamber through a fixed flow restriction and to the gas outlet chamber through an adjustable flow restriction; and

    a stepper motor for adjusting the adjustable flow restriction between the servo chamber and the gas outlet chamber, which is configured to cause a change of the servo pressure present in the servo chamber, which is configured to move the flow restriction valve relative to the flow restriction seat along the flow axis to thereby adjust the flow between the gas inlet chamber and the gas outlet chamber of the housing.

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