Electric infrared heater having a gas permeable electroformed po

Details Electric infrared heater having a gas permeable electroformed po Electric infrared heater having a gas permeable electroformed po

1989-05-15

1991-10-15

Bartis, Anthony

Electric resistance heating devices

Heating devices

Radiant heater

126 91R, 165133, 392408, 392410, 392418, 392432, F28F 1318, H05B 300

Patent

active

050581961

ABSTRACT:
An electric far-infrared heater has a plate-like porous metallic panel formed by an electroforming process installed in a box-like housing over an electric heating element therein. The panel is heated by the element and has its outer surface covered by a porous ceramic far-infrared emitting layer of Al.sub.2 O.sub.3, TiO.sub.2, Cr.sub.2 O.sub.3, MgO, ZrO.sub.2, SiO.sub.2 or mixtures thereof. A stream of gas supplied to the interior of the housing is heated by the element and passes through the porous panel and far-infrared layer for discharge onto the object being heated.

REFERENCES:
patent: 2573121 (1951-10-01), Wandelt
patent: 3077531 (1963-02-01), Wompey
patent: 3087041 (1963-04-01), Vonk
patent: 3496332 (1970-02-01), Lumde
patent: 3539770 (1970-11-01), Wallace
patent: 3668370 (1972-06-01), Pattison
patent: 3816705 (1974-06-01), Ebert
patent: 4164642 (1979-08-01), Ebert
patent: 4263500 (1981-04-01), Springer et al.
patent: 4626659 (1986-12-01), Charmes et al.
patent: 4798192 (1989-01-01), Maruko

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