HIGH-FREQUENCY GENERATOR FOR MICROWAVE OVEN

PURPOSE:To uniformly cook the food by making the accumulated quantity of the product of the high-frequency output heating the food and the heating time equal regardless of the commercial power frequency of 50Hz or 60Hz. CONSTITUTION:A microwave oven is constituted to have the relationship P60=1.2XP5...

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Bibliographic Details
Main Authors SAWAE TAKAO, MATSUKURA TOYOTSUGU
Format Patent
LanguageEnglish
Published 26.02.1990
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:PURPOSE:To uniformly cook the food by making the accumulated quantity of the product of the high-frequency output heating the food and the heating time equal regardless of the commercial power frequency of 50Hz or 60Hz. CONSTITUTION:A microwave oven is constituted to have the relationship P60=1.2XP50, where P50 is the high-frequency output for 50Hz and P60 is the high-frequency output for 60Hz when the primary voltage of a high-voltage transformer 13 is 100V. A time switch 17 driven by a synchronous type motor 16 as a timing device determining the heating time has the relationship of T50=1.2XT60, where T50 is the limit time for 50Hz and T60 is the limit time for 60Hz, because the rotating speed of the synchronous motor 16 has the proportional relationship to the frequency. The accumulated quantity of the product of the high-frequency output heating the food and the heating time for 50Hz and the accumulated quantity of the product of the high-frequency output heating the food and the heating time for 60Hz are made equal, constant energy is applied to the food regardless of the commercial power frequency of 50Hz or 60Hz, thus the food can be uniformly cooked.
Bibliography:Application Number: JP19880208711