Combination microwave and convection oven and method of using
US5272299A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Jun 22, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/6473
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A combined microwave and conventionally heated oven includes first and second chambers separated from one another by a partition including first and second spaced panels which define a cavity therebetween. These panels are both metallic, except where the microwave waveguide passes through rectangular gaps in them, in which are situated rectangular, non-metallic, infrared-absorbing panels of the same size. A microwave generator is provided in the second chamber for generating microwaves for use in heating a product positioned in the first chamber. Convention heater(s) (gas and/or electrical resistance) is/are also provided. A stream of cooling air reduces the temperature within the cavity in order to insulate the second chamber from the transfer of heat emitted from the first chamber in operation of the conventional heater(s). Infrared radiation absorbing panels mentioned at the end of the microwave waveguide, and forming non-metallic sections of the above cavity's walls, permit the passage of microwaves from the microwave generator through the partition to the first chamber. This is in order to carry out microwave heating of the product while absorbing infrared radiation emitted fr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.