Heating apparatus

Details Heating apparatus Heating apparatus

H - Electricity

05

B

309/78

H05B 3/74 (2006.01)

Patent

CA 1251821

ABSTRACT A heating unit suitable for mounting in a cooking hob consists of a circular tray having a layer of thermally-insulative material disposed therein and a peripheral thermally-insulative wall, within which four infra-red lamps, each containing a tungsten filament, are supported. The tray also includes an inner thermally-insulative wall, which encloses the length of each filament. Between the peripheral and inner walls, two conventional, wire wound heating elements are disposed. The filaments and the elements are energisable independently and/or concurrently, and series and/or parallel combinations of the filaments and the elements may be switched to provide various discrete power outputs.

559360

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