Domestic infra-red radiation oven
AssigneeAktiebolaget Electrolux
InventorLars R. G. Bergendal
Life of this patent
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Abstract
A domestic oven has upper and lower infra-red radiation sources. The upper radiation source includes at least one or two radiation elements emitting radiation in the range of 1.0-1.4 micro meters. The lower radiation source is a meandering tube element emitting long wave radiation in the range of 3-6 micro meters.
Claims8
In a domestic oven having a generally parallelepiped oven space with walls of a material which is highly reflective of infra-red radiation, one side wall being a door, and an upper and a lower radiation source arranged at top and bottom walls repectively of the oven, the radiation sources emitting infra-red radiation and a supporting surface substantially transparent to the radiation and arranged between the two radiation sources and adapted to support an oven load, the upper radiation source being arranged to emit short-wave IR-radiation with a peak performance in a wavelength range of 1.0 to 1.4 .mu.m, the improvement wherein the upper radiation source is comprised of at least one straight rod-shaped quartz-tube radiation element having an active length and being in a plane parallel to the top wall of the oven, the oven having a vertical distance from the rod-shaped radiation element to said supporting surface that is 40-70% of the active length of the radiation element.
Dependencies are inferred from the claim text.