초록 ▼

Polymeric heating elements and water heaters containing these elements are provided by this invention which utilize polymeric materials in contact with electric resistance heating materials and in contact with fluid to be heated. These polymeric materials also provide a substantially self-supporting

Polymeric heating elements and water heaters containing these elements are provided by this invention which utilize polymeric materials in contact with electric resistance heating materials and in contact with fluid to be heated. These polymeric materials also provide a substantially self-supporting structure for the resistance heating material. The heating elements include an electrically conductive resistance material capable of heating fluid when energized. The winding is insulated and protected by a polymer layer integrally disposed over the resistance material. The elements are lightweight, inexpensive to produce and use, and minimize galvanic corrosion and lime depositing without sacrificing heating capacity.

대표청구항 ▼

An electrical resistance heating device for heating a fluid medium comprising: an electrically conductive, resistance heating member having a pair of free ends joined to a pair of terminal end portions, said resistance heating member being fully supported by and encapsulated within an integral layer

An electrical resistance heating device for heating a fluid medium comprising: an electrically conductive, resistance heating member having a pair of free ends joined to a pair of terminal end portions, said resistance heating member being fully supported by and encapsulated within an integral layer of an electrically insulating, thermally conductive, injection molded, polymeric material whereby said polymeric material is in direct contact with said fluid medium, and will not melt when heating said fluid medium.