Automatic safety gas heating device

Details Automatic safety gas heating device Automatic safety gas heating device

1982-02-26

1984-02-07

Scott, Samuel

Stoves and furnaces

Liquid heater

Fluid fuel burner for other than top-accessible vessel

236 21R, 431 27, 431 46, 431 54, 431 66, 431 60, 122448R, 137468, F24H 100

Patent

active

044296827

ABSTRACT:
A valve rod of a gas heating device actuates not only a microswitch, but also a disc valve. A pilot burner and a main burner are separately controlled by individual solenoid operated valve which is serially connected. The disc valve is provided at the upstream of the pilot burner, and between two solenoid operated valves for safeguarding against the erroneous on-state of the microswitch. A sensor will, according to the presence of the pilot flame, instruct an electric control board to continue or discontinue the sparkling of an igniter, to open or close the solenoid valve for supplying gas to the main burner. Thus, the adversity of toxication caused by either the misfunction of microswitch or failure of valve actuation is able to be prevented.

REFERENCES:
patent: 2258590 (1941-10-01), Merten
patent: 2312479 (1943-03-01), Ray
patent: 2371020 (1945-03-01), Beam
patent: 2879358 (1959-03-01), Hilgert
patent: 4055164 (1977-10-01), Wu-Heng
patent: 4147159 (1979-04-01), Thorwaldson
patent: 4267820 (1981-05-01), Charron

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