High frequency heating apparatus utilizing inverter power supply
US5268547A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1991 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Sep 11, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/666
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high frequency heating apparatus includes a unitary structure including a magnetron for generating a microwaves, an inverter power supply for supplying a high voltage electric power to the magnetron, and a cooling unit for cooling the magnetron and the inverter power supply, all of which are accommodated within a common metallic casing. The unitary structure is provided at least one of a detector for detecting an operating condition of the cooling unit and a safety device including a detector for detecting a mounting of the metallic casing to a cabinet. For avoiding an electric shock, the unitary structure is divided into high and low voltage portions and the magnetron and the inverter power supply are electrically connected directly to each other without relying on the unitary structure so as to thereby accomplish a structure effective to minimize noise and to improve the reliability and the safety factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.