Electrical heating unit with flattened embedded heating coil

Details Electrical heating unit with flattened embedded heating coil Electrical heating unit with flattened embedded heating coil

H - Electricity

05

B

309/101

H05B 3/20 (2006.01) H05B 3/28 (2006.01) H05B 3/64 (2006.01)

Patent

CA 1115761

ELECTRICAL HEATING UNIT WITH FLATTENED EMBEDDED HEATING COIL ABSTRACT OF THE DISCLOSURE Resistance heating coils, flattened longitudinally along two sides to have generally oval cross-sections, are totally embedded in situ in a lightweight ceramic fiber insulat- ing body adjacent to and extending along beneath the surface of the insulating body. Electrical terminal elements extend from the heating coils through the insulating body, and axial move- ment of the leads is prevented by anchoring members welded thereto. In one embodiment, the coils are embedded in an insulating body having a thickness no greater than about twice the depth of the heating coils. The resulting compact heating unit is sufficiently thin to be mounted as a retrofit item on the interior walls of an existing furnace.

316694

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