| 摘要 |
An electric heating device releases active substances and has a housing (1) and cover (3) with holes (2) and (4) to receive a wick that is to be heated and soaked in a liquid that is to be evaporated. The housing (1) receives a pill-shaped PTC element (5) which is pressed between two electrodes (6) and (7) having a high heat conducting coefficient. The device has a small number of parts, and, with electrodes of suitable material and structure, provides a uniform heating of the round body which receives the wick.
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