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Pressure proving gas valve

  • US 6,571,817 B1
  • Filed: 02/28/2000
  • Issued: 06/03/2003
  • Est. Priority Date: 02/28/2000
  • Status: Expired due to Fees
First Claim
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1. A pressure proving valve for use in a fuel burning furnace, comprising:

  • a single housing integratable with a fuel burning heating system, the single housing comprising;

    a controller section for enclosing a controller and connections thereto;

    a valve mechanism section for enclosing a valve and associated valve controls;

    a connection channel to permit connection and associated controls between the controller and the valve;

    a fuel inlet for receiving combustion fuel;

    a fuel outlet for connecting combustion fuel to a combustion chamber; and

    a combustion air inlet;

    a valve located within the valve mechanism section for controlling the flow of fuel from the fuel inlet to the fuel outlet in a predetermined manner;

    a transducer mounted within the single housing and in communication with the combustion air inlet, the transducer further having an output for providing a signal indicative of the presence of combustion air within the combustion chamber, wherein the transducer is a pressure transducer for sensing the pressure of combustion air within the combustion chamber;

    a controller mounted within the controller section, the controller comprising;

    a pressure input attached to the transducer output;

    an output attached to the valve for providing signals to the controller to control the operation of the valve to maintain an air to fuel ratio within the combustion chamber that is within a predetermined parameter; and

    wherein when the air to fuel ratio can no longer be maintained within the predetermined parameters, the signal communicates with the valve to stop fuel flow, thereby fuel is not provided to the combustion chamber until a predetermined amount of combustion air is present inside the combustion chamber wherein the valve is re-opened.

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