Control system, method of operating a heating apparatus and cont

Details Control system, method of operating a heating apparatus and cont Control system, method of operating a heating apparatus and cont

1990-08-06

1993-08-10

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219512, 219510, 219483, 310332, H05B 102

Patent

active

052351599

ABSTRACT:
A control system for regulating electrical power input to the resistive heating elements of an electric heating apparatus, including domestic cooking appliances, is provided which employs at least one piezoceramic relay device. The electrical power is applied with the piezoceramic relay device responsive to control signals and with the control circuitry being directly and ohmically connected to the power source. In one embodiment, the control system employs individual piezoceramic relay devices for power regulation to the individual heating elements while in different embodiments a single piezoceramic relay device regulates power input to a pair of the heating elements. A method of operating the controlled apparatus in such manner and an apparatus having such control system are also disclosed.

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