Temperature sensor failure detection system for cooking applianc

Details Temperature sensor failure detection system for cooking applianc Temperature sensor failure detection system for cooking applianc

1986-01-06

1987-01-27

Goldberg, E. A.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219494, 219449, H05B 102

Patent

active

046395784

ABSTRACT:
A power control arrangement for a cooking appliance equipped with an automatic surface unit, the energization of which under normal operating conditions is controlled in accordance with a closed loop control strategy as a function of the sensed utensil temperature and the user selected temperature setting. The control arrangement is operative to detect a failure of the sensor circuit for the automatic surface unit and operative upon detection of such a failure to control energization of the surface unit in accordance with an open loop control strategy only as a function of the user selected setting. A user discernible signal is provided alerting the user to the sensor circuit failure. By this arrangement the user is informed of the malfunction and is able to use the automatic surface unit as a standard surface unit until the failure can be repaired.

REFERENCES:
patent: 3883753 (1975-05-01), Harrison
patent: 4126041 (1978-11-01), Doi et al.
patent: 4197581 (1980-04-01), Watrous
patent: 4320285 (1982-03-01), Koether
patent: 4343990 (1982-08-01), Ueda
patent: 4432210 (1984-02-01), Saito
patent: 4437159 (1984-03-01), Waugh
patent: 4493980 (1985-01-01), Payne et al.
patent: 4504922 (1985-03-01), Johnson et al.

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