Electric heating device with heating zones
US7098426B2 · kind B2 · utility
9Cited by
0References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Jul 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric heating device is adapted to be used in particular as an auxiliary electric heating for motor vehicles. The heating device comprises a plurality of PTC heating elements arranged in a plane of said heating device. The PTC heating elements are in electric contact with contact sheets for supplying current thereto and in thermal contact with radiator elements for transferring the heat produced to an air current to be heated. According to the present invention, the PTC heating elements arranged in this plane are adapted to be controlled separately in at least two groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.