Radiant heater unit

Details Radiant heater unit Radiant heater unit

1987-06-16

1989-03-07

Walberg, Teresa J.

Electric heating

Heating devices

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

219459, 219446, 219449, H05B 374

Patent

active

048108570

ABSTRACT:
In a radiant heater unit (1) for heating through a hotplate (2), the periphery of the heating field is formed by an initial cooking marginal heating system (9), which is e.g. operated by a short-circuit connection (19), so that it passes much more rapidly from the cold state into the visible glowing state and also in the marginal region use is made of the faster heat transfer there to the bottom (3) of the cooking utensil. The increased radiant power density can also be obtained by other measures, namely by modified insulating conditions in the vicinity of the marginal heating system, by using a PTC resistor in the vicinity of the inner partial power system and similar measures.

REFERENCES:
patent: 1979471 (1934-11-01), Knopp
patent: 3912905 (1975-10-01), Giler
patent: 4574187 (1986-03-01), Crews
patent: 4639579 (1987-01-01), Brooks

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