Electric heating – Metal heating – Of cylinders
Patent
1991-03-11
1992-11-03
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055F, 99DIG14, 99451, 426243, H05B 678
Patent
active
051608197
ABSTRACT:
A microwave tunnel oven receives a series of packages each comprising a container and a load in the container to be heated by microwave energy. The oven has a conveyor with a series of carriers each for receiving one of the packages and conveying it through the oven. The improvement comprises modifying the microwave field in the load during its irradiation in the oven in a manner to generate higher order modes of microwave energy in the load to enhance the uniformity of heating throughout the load. The structure for achieving the field modification is divided into two parts, one part being formed on the conveyor and the other part being formed either on the package or on a subsidiary conveyor that extends parallel to the main conveyor.
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Ball Melville D.
Gallerneault Christine E.
Hewitt Bryan C.
Lorenson Claude P.
Alcan International Limited
Leung Philip H.
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