| 摘要 |
The aim of the invention is the application of simple production methods for electrical resistance heating elements with a honeycomb body and use total capacity with regard to the specific electrical power per volume unit. Said aim is achieved for an electrical resistance heating element with a honeycomb body of resistance material with positive temperature coefficients for the resistance (PTC resistance), in which the channels, for throughflow of a medium for heating, comprise metallised walls and are electrically alternately contacted after the fashion of a chess-board on the front faces of the honeycomb body by means of a front face metallisation, whereby an insulation region ( 1 ) is alternately let into the metallisation ( 3 ) on the walls of the channels running from the front faces, whilst the front face metallisation ( 2 ) completely covers the front faces. Possible fields of application for the above (without limitation thereto) are particularly additional heaters and windscreen heaters in motor vehicles or small, self-regulating and rapidly-responding room space heaters.
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