Radiant heater having multiple heating zones

Details Radiant heater having multiple heating zones Radiant heater having multiple heating zones

1993-01-05

1993-12-14

Reynolds, Bruce A.

Electric heating

Heating devices

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

219446, H05B 100, H05B 368

Patent

active

052705196

ABSTRACT:
In a radiant heater having multiple heating zones there is provided a first heating zone incorporating at least one heating element and a second heating zone incorporating at least first and second heating elements. A thermal cut-out device includes a temperature sensor which passes through at least the first heating zone and which is responsive solely to heat emitted in the first heating zone. A manually operable switch permits switching between first and second heating states. In the first heating state, the at least one heating element in the first heating zone is energised alone, while in the second heating state the at least one heating element in the first heating zone is electrically connected in series with the second heating element of the second heating zone, the at least one heating element and the second heating element being energised in parallel with the first heating element of the second heating zone.

REFERENCES:
patent: 1436657 (1922-11-01), Ingersoll
patent: 2291857 (1942-08-01), Woodman
patent: 2419083 (1947-04-01), Myers
patent: 4538051 (1985-08-01), Schreder et al.

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