Method of controlling the supply of electric power to an electri

Details Method of controlling the supply of electric power to an electri Method of controlling the supply of electric power to an electri

1990-03-27

1991-06-04

Reynolds, Bruce A.

Electric heating

Heating devices

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

219483, 392342, 392394, H05B 102

Patent

active

050216376

ABSTRACT:
The invention relates to a method of controlling the supply of electric power to an electric sauna heater, the sauna heater being divided into two portions to be heated separately: a stone space (1) and an air duct (2) each being provided with one or more heating elements (1A1-1A3, 1B1-1B3, 2A1-2A3, 2B1-2B3) to heat the heat-storing material placed in the stone space (1) and the air contained in the sauna room, respectively. In the invention, to achieve good operating properties in this kind of sauna heater both with respect to the heating of the stone space and the air space of the sauna room without increasing the rated wattage of the sauna heater to an unreasonably high value, one or some of the heating elements are disconnected or connected to operate at partial power, whereby the power demand of the sauna heater is always smaller than the total power of the heating elements (1A1-1A3, 1B1-1B3, 2A1-2A 3, 2B1-2B3).

REFERENCES:
patent: 3532857 (1979-10-01), Zeitlin
patent: 3610886 (1971-10-01), Pansing
patent: 3767894 (1973-10-01), Berger
patent: 3892946 (1975-07-01), Rimmi
patent: 3979576 (1976-09-01), Janson
patent: 4015104 (1977-03-01), Eckman et al.
patent: 4138609 (1979-02-01), Englemann
patent: 4851646 (1989-07-01), Perala

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