Radiant electric heaters

Details Radiant electric heaters Radiant electric heaters

1990-11-20

1991-09-17

Walberg, Teresa J.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219448, H05B 374

Patent

active

050497260

ABSTRACT:
A radiant electric heater has one or more infra-red image (22, 24) having a relatively high temperature coefficient of resistance. To reduce the inrush current when the lamps are first energized, a series resistance coil (54) is provided together with circuitry (64, 68, 70) to bypass the series resistance after a short time interval. Because the energy dissipated in the coil is relatively limited. It can be concealed beneath a peripheral insulating well (18) of the heater.

REFERENCES:
patent: 2681973 (1954-06-01), Macoicz
patent: 4639579 (1987-01-01), Brooks
patent: 4700051 (1987-10-01), Goessler
patent: 4789772 (1988-12-01), McWilliams

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