Furnaces – Wall structure
Patent
1991-03-11
1991-11-12
Favors, Edward G.
Furnaces
Wall structure
52410, 52512, F23M 500
Patent
active
050638610
ABSTRACT:
An excellent ceramic fiber furnace is provided which prevents formation or peeling-off of minute ceramic fibers from a ceramic fiber board of the furnace caused by elevation or lowering of the furnace temperature. As a result, firing methods of using a muffle furnace, a reflector system or a brick wall furnace, etc., which necessitate a large heat source and which have inferior heat efficiencies and small temperature-raising or lowering rates, need not be used, so that investment cost and running cost can be decreased, firing of ceramic products is facilitated, the quality of the ceramic products is improved, and the firing time of the ceramic products can be decreased. The ceramic fiber furnace has a furnace wall of a structure composed of a substrate member, a wall of ceramic fibers applied on the inner surface of the substrate member, a ceramic fiber board applied on the inner surface of the wall of the ceramic fibers, and a ceramic pin penetrating through the furnace wall, comprising a ceramic plate interposed between the ceramic nut and the ceramic board, the ceramic plate having a penetration hole which has a larger diameter than the diameter of the ceramic pin for allowing free displacement of the ceramic pin therein.
REFERENCES:
patent: 4432989 (1984-02-01), Norman et al.
patent: 4633636 (1987-01-01), Alexander
patent: 4959012 (1990-09-01), Perfetti
Imogawa Keikichi
Nakasako Kazuo
Favors Edward G.
NGK Insulators Ltd.
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