Microwave oven having overheat preventing function and method of controlling its fan motor
US6479806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Feb 13, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/666
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a microwave oven capable of cooking food according to an output mode in response to an output level of its magnetron, including a fan motor having a low-speed node and a high-speed node to receive power, and having a turning speed variable in response to a node connecting state; an output mode selecting part through which one of output modes is selected; a switching part having at least one switch for switching power applied to the low-speed node or high-speed node of the fan motor; and a control unit controlling the switching part in response to an output mode selected by the output mode selecting part, thus preventing its electrical components from being overheated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.