Electric resistance heating devices – Heating devices – Immersion heater details
Patent
1995-02-16
1997-05-27
Walberg, Teresa J.
Electric resistance heating devices
Heating devices
Immersion heater details
219544, 219546, H05B 378
Patent
active
056339780
ABSTRACT:
An electrical heater, in particular in the shape of an immersion heater (20), to heat liquids and/or keep these at a moderate temperature with at least one heating element which heats up on account of a current which flows through the element and which conveys heat to its surroundings. The at least one heating element is made of thermal ceramic and is housed in a thermally conductive, electrically insulated housing (11) with which it is in thermally conductive contact. The heating element is hereby clamped between two electrically conductive panels or plates through which the current is supplied, whereby a clamping device independent of the housing (11) is provided which presses the two plates and the heating element together. The cross-sections of the plates are provided with a matching bump and a depression so that the space between them can accommodate the heating element. At least one of the plates is provided with a raised area which protrudes beyond the clamping device and functions as a heat contact surface (FIG. 1).
REFERENCES:
patent: 4091267 (1978-05-01), Grant
patent: 4404463 (1983-09-01), Eder et al.
patent: 4822980 (1989-04-01), Carbone et al.
patent: 5270521 (1993-12-01), Shikama et al.
Dang Thuy T.
Walberg Teresa J.
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