FIELD: electricity.
SUBSTANCE: electric heater comprises a metal cylindrical body, wherein there is coaxial core with heating element wrapped around it and made of two conductors, which ends are connected to current lead mounted in a sealed way at the cylindrical body end, while its other end is closed with a plug hermetically. Conductors of the heating element have straight-line sections passing into helical shape, and their turns are laid into available core grooves. Spiralling pitch is reduced from periphery to the centre, straight-line sections of conductors are divided by heat-removing component and connected to current lead through a contact unit comprised of temperature-compensated component, at that outer surface of the core and inner surface of the body are covered with heat-absorbing compound, and cavity of the body is filled with inert material.
EFFECT: improved operational characteristics of the heating device.
5 cl, 2 dwg
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