Combustion – Timer – programmer – retarder or condition responsive control – Sensor of electrical condition or temperature of electrical...
Patent
1974-11-20
1976-01-20
Favors, Edward G.
Combustion
Timer, programmer, retarder or condition responsive control
Sensor of electrical condition or temperature of electrical...
F23N 500
Patent
active
039334198
ABSTRACT:
An automatic gas ignition system including an electrically-energized gas ignition element in proximity to a gas burner and a magnetic heat-sensing device comprising a permanent magnet and a sensing plate having a Curie temperature at or above the ignition temperature of the gas in the system. The sensing plate is located close to the ignition element so as to be heated thereby. The magnet is attracted into contact with the sensing plate when the latter is at a temperature below its Curie temperature, and is released from the plate when the latter is heated to its Curie temperature by the ignition element. The magnet is operatively connected to a valve supplying gas to the burner in such a manner as to maintain the valve closed when the magnet is attracted to the sensing plate, and to open the valve when the magnet is released by the plate. Thus, gas is permitted to flow to the burner only when the ignition element has reached a gas ignition temperature.
REFERENCES:
patent: 2180675 (1939-11-01), Gille
patent: 3620659 (1971-11-01), Fox
patent: 3871814 (1975-03-01), Das et al.
Favors Edward G.
Levy Edward F.
Ram Domestic Products Company
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