Patent · US Expired

Microwave system for heating voluminous elongated loads

US6833537B2 · kind B2 · utility

13Cited by

3References

30Claims

0Family size

Assignee

A-Cell Acetyl Cellulosics AB · SE

Inventors

Per Olov Risman · Huskvarna, SE
Pia Larsson Brelid · Gothenburg, SE
Rune Simonson · Gothenburg, SE

Key dates

Filing date	Dec 6, 2002
Grant date	Dec 21, 2004
Priority date	—
Expiry date	Jan 14, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH05B6/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A Microwave heating system includes an elongated cylindrical metal cavity intended for heating a voluminous elongated load. The system includes microwave feeding means arranged to generate a single mode of the circular type TEm;n;p (a so-called whispering gallery mode) inside the cavity in order to heat the elongated load, wherein the circumferential index m is at least 4, the radial index n=1 and the axial index p being >0. The heating system is preferably adapted for wood processing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.