Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1975-01-17
1977-03-29
Miller, J D
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219476, 219483, H05B 102
Patent
active
040151042
ABSTRACT:
A control system for controlling energization of electrically operated heat generating apparatus included in a multizone electrical heating system. Each of the zones has at least two parallel connected heat generating stages. The second stage heat generating apparatus in any of the zones is prevented from being energized irrespective of the temperature level in the zone when the number of the first stages already activated in each of the zones is greater than a preselected fraction of the total of the first stages.
REFERENCES:
patent: 3161758 (1964-12-01), Biermann et al.
patent: 3496337 (1970-02-01), Voglesonger
patent: 3560712 (1971-02-01), Toohill
patent: 3586869 (1971-06-01), Kompelien
patent: 3767894 (1973-10-01), Berger
Eckman Raymond L.
Wood Russell E.
Bell Fred E.
Carrier Corporation
Curtin J. Raymond
Deutsch Barry E.
Miller J D
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