Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1994-06-02
1996-08-13
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219492, 219505, 340589, 374107, H05B 102
Patent
active
055458777
ABSTRACT:
Water detection device to determine the presence of water in a cooking device having a vessel adapted to receive a cooking medium such as oil which serves as a heat transfer medium for cooking food in the vessel. The temperature of the medium in the vessel is monitored at selected intervals. The presence of water in the vessel is determined by the detection of a decrease in the rate of temperature rise in the range of the boiling point of water. In the event of a decrease in the rate of temperature rise in the range of 212 degrees Fahrenheit control functions are initiated to prevent further rise in the temperature of the vessel and initiate other necessary precautionary steps. Measurement of the rate of temperature rise can also be adapted to to eliminate the effects of certain occurrences which would tend to provide false indication of the presence of water in the vessel.
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patent: 4913038 (1990-04-01), Burkett et al.
patent: 4948950 (1990-08-01), Rae
patent: 5048400 (1991-09-01), Ueda et al.
patent: 5232151 (1993-08-01), Mercer et al.
patent: 5315350 (1994-05-01), Hirobe et al.
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