Combined microwave and thermal drying apparatus
US4746968A · kind A · utility
47Cited by
12References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1987 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Mar 30, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2206/046
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a microwave drying cavity, a thermal radiator provides infrared radiation that complements the microwave radiation in effecting a more uniform drying of a product within the cavity. The radiator includes a metal plate having apertures of a trifoliate configuration and electrical resistance-type heaters embedded in the plate. The trifoliate apertures permit microwave radiation of universal polarization to pass through the plate, so the radiator may be placed close to the product without shielding the product from the microwave radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.