Temperature control system for electric fluid heater

Details Temperature control system for electric fluid heater Temperature control system for electric fluid heater

1976-03-19

1978-06-06

Truhe, J. V.

Electric heating

Heating devices

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

219295, 219331, H05B 102, H05B 360

Patent

active

040938476

ABSTRACT:
An electric fluid heater of the type in which the fluid is heated by passing electricity through it includes an electronic temperature control system responsive to a temperature sensor in the fluid for controlling the flow of electric current to the heating electrodes. The electronic controller includes means to limit the maximum current passed by the heating electrodes. Heat generated is controlled to demand by varying the duty cycle of back-to-back SCR's in series with one of the electrodes.

REFERENCES:
patent: 2465532 (1949-03-01), Hall
patent: 3517162 (1970-06-01), Webb

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