Combustion – Timer – programmer – retarder or condition responsive control – Sensor of first burner controls second burner – e.g. – pilot...
Patent
1992-10-14
1994-02-01
Wayner, William E.
Combustion
Timer, programmer, retarder or condition responsive control
Sensor of first burner controls second burner, e.g., pilot...
431 69, F23Q 908
Patent
active
052827399
ABSTRACT:
A safety device for gas-fired equipment having a main gas supply control valve and a plurality of gas-taps each associated with a flame-producing burner. The device includes a plurality of switches each associated with a gas-tap and actuatable by the operation of the gas-tap, a plurality of heat responsive sensors each having a switching circuit operationally connected in circuit with a secondary control circuit and a timer, and a central control unit connected in circuit for receiving control signals from the output of each of the secondary control circuits, thereby controlling the state of the main gas supply valve. Upon the detection by a heat responsive sensor of the extinction of a fire from a burner when a gas-tap associated therewith is open, after a predetermined time period, the secondary control circuit connected to the sensor emits a signal to the central control unit for effecting the closing of the main gas supply valve.
REFERENCES:
patent: 3280884 (1966-10-01), Eckelberry et al.
patent: 3797988 (1974-03-01), Davidson
patent: 5161963 (1992-11-01), Berlincourt
Chinsky Moshe
Eyal (Bickels) Elazar
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