Heat-generating element for an electric heating device and method for the manufacture of the same
US8183505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Mar 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat-generating element includes at least one PTC heating element, strip conductors lying flat on it on both sides, and a frame which forms at least one frame opening for holding the at least one PTC heating element. The frame, as a part of a housing, forms a structural unit with a wedge element having a first wedge surface that extends parallel to the strip conductor and a second wedge surface that lies exposed on the exterior side of the housing and that is aligned diagonally to the first wedge surface. For fixing the heat-generating element precisely in place in a slot in the housing, the heat-generating element has spacing surfaces positioned upstream or downstream of the at least one PTC heating element in the direction of the length of the slot. Also provided is a method of manufacturing an electric heating device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.