| 摘要 |
<p>PTC electric heating device for vaporisers of fragrances or insecticides imbued on solid mats, of the type suitable to be introduced in the body of a vaporiser as an electrically-insulated self-contained unit. The device comprises a plastic support (1) for housing the PTC element (3), corresponding electric contacts (2, 4-6), an elongated portion of which protrudes from suitable apertures (8, 10) of said support and a metal sheet (6) for heat diffusion. Said support is closed by a flat cover (7), itself made of plastic, placed in contact with said metal sheet (6) and suited to serve with its outer side as a resting surface of said mats.</p> |
