Stoves and furnaces – Stoves – Cooking
Patent
1994-02-08
1994-12-27
Yeung, James C.
Stoves and furnaces
Stoves
Cooking
126 39BA, 126 42, 431256, F24C 300
Patent
active
053755855
ABSTRACT:
A gas range includes a burner, a burner control unit, a piezoelectric igniter and a safety valve. The safety valve is situated between a gas supply and the burner. A thermocouple is situated near the burner. The piezoelectric igniter is used to ignite gas which vents out of the burner. As a flame occurs at the burner, a temperature at the burner will ascend. The thermocouple detects the increased temperature and generates a current to open the safety valve. If the flame goes out, the temperature will descend to the predetermined value. The thermocouple detects the decreased temperature and stops generating any current to actuate the safety valve. Thus, the safety valve is closed so as to keep any gas from venting out of the burner.
REFERENCES:
patent: 2115007 (1938-04-01), Cabrera
patent: 3436165 (1969-04-01), Gehrke
patent: 3477797 (1969-11-01), Zielinski et al.
patent: 4003360 (1977-01-01), Branson
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