Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1984-11-16
1986-08-05
Paschall, M. H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219492, 219483, 219486, 219453, 340589, 307 38, H05B 102
Patent
active
046045180
ABSTRACT:
A display arrangement for a cooking appliance using a heater energy counter based power control system which provides a user discernible signal signifying that the appliance heating element has reached the steady state temperature associated with the user selected power setting. The heater energy counter is selectively incremented or decremented at a rate in accordance with the selected power setting such that the count rate is approximately proportional to the rate of increase or decrease respectively of the temperature of the heating element for the power setting selected. When so incremented and decremented the count of the counter provides an approximation of the actual heating element temperature. The display arrangement generates a user discernible signal when the count of the heater energy counter indicates that the associated heating element has approximately reached the steady state temperature for the selected power setting. In the illustrative embodiment the display comprises an LED array associated with each heating element. Each array is energized to provide a pattern representative of the power setting selected by the user for its associated heating element. When the count of the heater energy counter indicates that the steady state temperature for the selected setting has been reached, the display flickers for a predetermined period to signify to the user that the steady state condition has been reached.
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patent: 4443690 (1984-04-01), Payne et al.
European Trade Show Handout, Busch-Jaeger Elecktro GmbH, 3/2/81.
General Electric Company
Houser H. Neil
Paschall M. H.
Reams Radford M.
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