Heating – Heating apparatus element having protective cooling structure – Wall – floor or roof element
Patent
1989-09-20
1991-04-30
Bennet, Henry A.
Heating
Heating apparatus element having protective cooling structure
Wall, floor or roof element
432233, 110336, 110339, F27D 112, F23M 500, F23M 508
Patent
active
050114026
ABSTRACT:
A suspended back wall for a high temperature furnace including a plurality of spaced-apart, vertically extending columns having upper portions supported between spaced girder members to bear loading while permitting lateral thermal expansive and contractive movement of the upper portions of the columns. Lower end portions of the columns are attached to a main support beam which horizontally traverses the width of the suspended wall. A plurality of interlocking refractory tiles are secured on the vertical columns by cast metal hangers. A plurality of insulation slabs or batts are inserted in specially formed pockets between adjacent refractory tiles and columns at a rear face thereof. An air chamber is formed along the rear of the vertical columns and an air duct is provided along the bottom thereof to supply a regulated forced air flow to the air chamber. Emergency air doors are provided at the ends of the duct to provide a natural draft through the air chamber in the event of a loss of forced air draft due to fan failure.
REFERENCES:
patent: 3328014 (1967-06-01), Longenecker
patent: 3812798 (1974-05-01), Merkle, Jr.
patent: 3888195 (1975-06-01), Longenecker
patent: 4705475 (1987-11-01), Coates
Bennet Henry A.
Frazier Simplex, Inc.
Kilner Christopher B.
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