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Patent Searching and Data


Title:
MICROWAVE OVEN
Document Type and Number:
Japanese Patent JP2001167869
Kind Code:
A
Abstract:

To provide a safe microwave oven inexpensively in which operation stops before generating fire or smoke due to short circuit by detecting a layer short-circuit of a secondary coil of a high voltage transformer.

The microwave oven using high frequency inverter 21 comprises resonance voltage lowering detecting means 14 for detecting a time when peak value of resonance voltage being voltage at both ends of switching element 8 arrives in a predetermined value to stop a control means 9, and start timer means 13 for preventing the stop of the control means 9 of the resonance voltage lowering detecting means 14 for predetermined time by receiving output command from an operating part 10. Therefore, the microwave oven can be stopped when there is detected lowering of the peak value due to generation of the rare short circuit of the secondary coil of the high voltage transformer.


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Inventors:
AKIYAMA TOSHIRO
KAMEOKA KAZUHIRO
KINOSHITA KOICHI
SUGIYAMA NAOYA
Application Number:
JP34827699A
Publication Date:
June 22, 2001
Filing Date:
December 08, 1999
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
MITSUBISHI ELECTRIC HOME APPL
International Classes:
H05B6/68; (IPC1-7): H05B6/68
Attorney, Agent or Firm:
Muneharu Sasaki (3 outside)