Device for determining the temperature of a glass ceramic plate heated by means of heat coils or halogen lamps
US4851645A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Feb 8, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2213/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for determining the temperature of a glass ceramic plate heated using heat coils or halogen lamps with a temperature sensor which emits a signal for a control circuit corresponding to the temperature of the glass ceramic plate. The heat coils or the halogen lamps are positioned in the internal space of a cylindrical vessel-like insulation support, and in which the surrounding wall of the insulation body, under spring tension, abuts on the glass ceramic plate heated by the radiation of the heating coils or the halogen lamps. Adequate control precision can be achieved by having the temperature sensor positioned in a recess in the surrounding wall of the insulation body, and is in a thermally-conductive connection with the lower side of the glass ceramic plate. The recess for the temperature sensor is positioned at a distance to the internal space of the insulation support and thus the dynamics of the control behavior can be adjusted to low hysteresis and optimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.