Cooking heating apparatus
US4367388A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1980 |
| Grant date | Jan 4, 1983 |
| Priority date | — |
| Expiry date | May 19, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/6447
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cooking heating apparatus is provided in which an object to be heated is subject to char cooking, the apparatus having a detector circuit for detecting the charred condition by detecting the intensity of reflected visible light from the surface of the object and a heating device for burning and removing foreign materials created upon heating the object and deposited on a transparent glass which is provided for preventing the foreign materials from reaching a light source which provides the visible light and a photosensor which detects the reflected visible light. The apparatus may further comprise means for forcing off the foreign materials burnt by the burning and removing elements by means of a forced air flow and/or a device for scattering the foreign materials given off from the object upon heating to prevent the foreign materials from reaching the transparent glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.