Heater control

Details Heater control Heater control

1998-11-04

2000-02-08

Paschall, Mark

Electric heating

Heating devices

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

219486, 219494, 219508, 34031002, 307 38, H05B 102

Patent

active

060230525

ABSTRACT:
A method and apparatus are provided for controlling parallel heater elements, the method including the steps of: providing a plurality of electrical heater elements; generating a plurality of temperature signals associated with a plurality of the heater elements; generating a control signal based on one or more temperature signals; providing an alternating current power supply connected to the electrical heater elements through a power transmission system; generating a signal when the voltage of the alternating current power supply passes through ground potential; blocking electrical power to a heater element starting when a zero detection signal is detected an ending when another zero detection signal is detected, for a fraction of the alternating current cycles in a time period, the fraction being a function of the control signal; and transmitting temperature control signals through the power transmission system.

REFERENCES:
patent: 4090062 (1978-05-01), Phillips et al.
patent: 4348582 (1982-09-01), Budek
patent: 4777350 (1988-10-01), Crockett et al.
patent: 4874926 (1989-10-01), Sanders
patent: 5060287 (1991-10-01), van Egmond
patent: 5065818 (1991-11-01), Van Egmond
patent: 5164660 (1992-11-01), Carl Jr. et al.
patent: 5189283 (1993-02-01), Carl Jr. et al.
patent: 5361982 (1994-11-01), Liebl et al.
patent: 5396047 (1995-03-01), Schilling et al.
patent: 5404952 (1995-04-01), Vinegar et al.
patent: 5454259 (1995-10-01), Ishii et al.
patent: 5579821 (1996-12-01), Vander Jagt
patent: 5582756 (1996-12-01), Koyama
patent: 5589092 (1996-12-01), Chang
patent: 5648982 (1997-07-01), Durrant et al.
patent: 5654979 (1997-08-01), Levin et al.
patent: 5657379 (1997-08-01), Honda et al.
patent: 5659574 (1997-08-01), Durrant et al.
patent: 5659779 (1997-08-01), Laird et al.

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