Electric resistance heating devices – Heating devices – Immersion heater details
Patent
1996-11-26
1998-11-10
Walberg, Teresa J.
Electric resistance heating devices
Heating devices
Immersion heater details
392500, 392497, 338318, 338286, H05B 340
Patent
active
058356797
ABSTRACT:
Electrical resistance heating elements, hot water heaters containing such elements, and methods of preparing such elements are provided. The electrical resistance heating elements of this invention can be disposed through a wall of a tank for heating fluid, such as water. They include a skeletal support frame having a first supporting surface thereon. They also include a resistance wire wound onto the first supporting surface and preferably connected to at least a pair of terminal end portions. The support frame and resistance wire are then hermetically encapsulated and electrically insulated within a thermally-conductive polymeric coating. The skeletal support frame of this invention improves injection molding operations for encapsulating the resistance wire, and can include heat transfer fins for improving thermal conductivity.
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Eckman Charles M.
Roden James S.
Cronk Peter J.
Energy Converters, Inc.
Nguyen Quan
Rheem Technology, Inc.
Walberg Teresa J.
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