Combustion – Timer – programmer – retarder or condition responsive control – With test circuit checking or analyzing flame sensing...
Reexamination Certificate
2006-05-16
2006-05-16
Gartenberg, Ehud (Department: 3749)
Combustion
Timer, programmer, retarder or condition responsive control
With test circuit checking or analyzing flame sensing...
C431S006000, C431S070000, C431S071000, C431S073000, C431S074000, C431S075000
Reexamination Certificate
active
07044729
ABSTRACT:
The system (1) for controlling the combustion (7) of a cooking oven burner (2), comprises in combination a thermostat valve (3) with a rotary hand knob (4) and a non-electric temperature sensor (6) for modulating the burner flame (7), and an electromagnetic safety valve kept open for ignition, and a electronic module (10) supplying in a first moment a DC power supply to the safety valve (8), which is then maintained open by a thermocouple (9) heated by the main flame (7). A common electrode (18) is provided both for electronic flame detection and ignition. During the burner pre-ignition step, the absence of flame detection signal (If) permits the gas flow (G) to be cut off after a short timed interval, irrespective of the thermocouple response. In the event of the AC power supply being cut off, the thermocouple (9) and the thermostat valve (3) keep the burner modulated independently.
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Ayastuy Iñaki
Fernández Gonzalo
Barrow James G.
Fagor S. Coop.
Gartenberg Ehud
The Kline Law Firm
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