Method and apparatus for even heating of products by means of microwaves
US4956532A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Oct 6, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/645
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for even and rapid heating, pasteurization or sterilization of products contained in a package, such as, for example, pharmaceutical products or food, which are conveyed through a microwave treatment chamber on a continuous conveyor belt. In order to heat components of the products having different heat absorption for the purpose of reaching the pasteurization temperature rapidly and evenly, the temperature of the components is recorded by a temperature sensor, and on the basis of this the computer calculates the respective .DELTA.T, taking into account given product parameters and the desired temperature to be reached. When the product passes under the following input aperture, a given microwave energy level is coupled into each specific component, as a result of which an even temperature of all products in the package is achieved very rapidly without overheating of the product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.