F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
309/69.1
F24C 7/00 (2006.01) F24C 14/02 (2006.01) H05B 1/02 (2006.01)
Patent
CA 1199958
TURN-OFF CONTROL CIRCUIT FOR SELF-CLEANING OVENS Abstract of the Disclosure In a cooking oven which is cleaned by pyrolyzation of soil within the oven cavity and has a smoke eliminator duct extending through the oven wall, with a smoke eliminator heater disposed adjacent to the duct inlet, a reducing gas sensor is mounted either adjacent to the oven end of the smoke eliminator duct or within the smoke eliminator duct near its discharge end. An electrical relay or microcomputer control is coupled between the gas sensor and the heater to initially heat the oven interior and to later deenergize the heater when the reducing gas sensor output indicates a desired oven condition. The oven heaters are temporarily deenergized when the gas sensor output indicates a smoke eliminator overload. If the gas sensor is mounted in the smoke eliminator duct, the smoke eliminator heater may be deenergized toward the end of the cleaning cycle, so that the effluent is not affected by the smoke eliminator heater before reaching the gas sensor. Plural smoke eliminator heaters are also disclosed to enable increase of heater power during the early cleaning stages and reduction of the heater power during the later cleaning stages.
442485
Thomas Charles E.
Wojnarowski Robert J.
Company General Electric
Eckersley Raymond A.
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