Radiant electric heater arrangement and method of operating the same
US5892206A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/74
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A radiant electric heater arrangement for a glass-ceramic top cooking appliance includes a heater in the form of a dish-like support supporting a first heating element and a second heating element. The first heating element has a predetermined minimum operating life expectancy at a predetermined optimum operating temperature. During user-selectable periods of boost heating the first heating element is connected independently to a voltage supply and operates at a first temperature higher than the predetermined optimum operating temperature. In contrast, during user-selectable periods of normal heating, the second heating element is connected to the voltage supply in series with the first heating element, the first heating element operating at a second temperature lower than the predetermined optimum operating temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.