Gas-supply system for catalytic gas burners

Details Gas-supply system for catalytic gas burners Gas-supply system for catalytic gas burners

1982-04-26

1985-04-16

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of first burner controls second burner, e.g., pilot...

236 68D, F23Q 908

Patent

active

045113262

ABSTRACT:
A catalytic gas burner, as used e.g. in a mobile space heater, comprises a valve housing divided by at least two poppet valves into three or more cascaded chambers. One chamber communicates with a gas inlet and is normally closed by a first poppet valve which can be opened by a push rod and held open by an electromagnet, the latter being energized under the control of a thermocouple as long as an adjoining ancillary nozzle emits a monitoring flame. This nozzle communicates with another chamber to which gas is admitted in the open state of the first poppet valve and which also feeds the main nozzle head of the burner through a supply conduit including a manually and/or thermally controlled flow regulator. A second poppet valve, fixed to the push rod, is open as long as that rod is depressed against a spring force to give access to a further chamber from which supplemental gas is conveyed through another conduit to the nozzle head during a start-up phase while an igniter is being actuated. As long as the first poppet valve is open, gas passes through a throttled branch of the supply conduit to the nozzle head by way of the flow regulator which also has a passage controlled by a piston for letting additional gas from another branch of that conduit enter the nozzle head at a variable rate until the desired temperature has been reached.

REFERENCES:
patent: 3091285 (1963-05-01), Hassa

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