Infra-red heaters

Details Infra-red heaters Infra-red heaters

1988-08-05

1990-03-20

Walberg, Teresa J.

Electric heating

Heating devices

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

219465, 219468, 219354, H05B 374

Patent

active

049103873

ABSTRACT:
An infra-red heater (1) for a glass ceramic top cooker includes a dish containing a base layer of thermal insulating material. A peripheral wall of thermal insulating material extends around the periphery of the base layer and at least one infra-red lamp (3) extends across the base layer. A ballast device (5) is electrically connected in series with the infra-red lamp, for example in the form of a coil of bare resistance wire, and serves to reduce inrush current to the lamp. A thermal cut-out device (7) cuts off the supply of power to the infra-red lamp and to the ballast device (5) if the temperature of the glass ceramic cooking surface becomes excessive. The coil of bare resistance wire preferably has an electrical resistance which is approximately half the electrical resistance of the infra-red lamp at its operating temperature. The use of a ballast device (5) enables the infra-red lamp (3) to be used in conjunction with a cyclic energy regulator (9).

REFERENCES:
patent: 2614200 (1952-10-01), McNair
patent: 2681973 (1954-06-01), Macoicz
patent: 2959662 (1960-11-01), Crowley
patent: 4535221 (1985-08-01), Holsworth
patent: 4639579 (1987-01-01), Brooks et al.
patent: 4645911 (1987-02-01), Husslein
patent: 4665307 (1987-05-01), McWilliams
patent: 4700051 (1987-10-01), Goessler et al.
Lamps and Lighting, S. T. Henderson and A. M. Marsden (eds.), 1972, pp. 315-324.
The New Penguin Dictionary of Electronics, V. Pitt & J. Young (eds.), 1979, pp. 26-27.

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