Fluid actuated damper control apparatus

Details Fluid actuated damper control apparatus Fluid actuated damper control apparatus

1978-02-27

1980-01-08

O'Dea, William F.

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

1376371, 431 20, F23N 302

Patent

active

041824830

ABSTRACT:
An apparatus for opening and closing the draft hood discharge opening and vent and fuel line of a fluid fuel-fired heating device such as a domestic water heater. The disclosed apparatus includes a diaphragm-type expansible chamber fluid motor assembly mechanically linked to a damper assembly such that when the heating devices call for heating, the supply of pressurized fuel acts to actuate the motor for opening the damper assembly. The motor assembly also has a pressure output line which operates a fail-safe type of diaphragm valve for controlling flow. This prevents burner operation until after the dampers are open. Additionally, when the supply of fuel is terminated, the motor assembly does not close the damper assembly until after the diaphragm valve stops fuel to the burner.

REFERENCES:
patent: 1336937 (1920-04-01), Allman
patent: 1813395 (1931-07-01), Fraser
patent: 2112554 (1938-03-01), Beam
patent: 2130491 (1938-09-01), Gilliland
patent: 2241661 (1941-05-01), Furlong
patent: 4079884 (1978-03-01), Sherman

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