Method for controlling a ventilation motor of a microwave oven

Details Method for controlling a ventilation motor of a microwave oven Method for controlling a ventilation motor of a microwave oven

1994-05-26

1996-03-12

Leung, Philip H.

Electric heating

Microwave heating

Enclosed cavity structure

219719, 219702, 126299D, 126 21A, H05B 664

Patent

active

054988586

ABSTRACT:
This invention relates to a method for controlling a ventilation motor of a microwave oven which is provided to control the ventilation motor automatically according to a setting time by a user. The method comprises steps for searching for presence of the timer key input, checking the present condition of operation of the ventilation motor if there was the timer key input, memorizing the ventilation motor operation period of time into the ventilation period of time memory part if the ventilation motor was under operation, checking the present condition of operation of the ventilation motor if there was no timer key input, checking up memories of the ventilation period of time memory part on a setting of the ventilation motor operation period of time, if the ventilation motor was under operation, checking finish of decrease of the preset operation period of time data of the ventilation motor while decreasing the preset data in the ventilation period of time memory means in every second if the operation period of time of the ventilation motor has been set, turning off the ventilation motor on finish of decrease of data as the result of the checking, and ventilation controlling in which the ventilation motor is turned off irrespective of the preset operation period of time of the ventilation motor if the ventilation motor turn off key is pressed while the ventilation motor is in operation.

REFERENCES:
patent: 5120916 (1992-06-01), Horinouchi et al.
patent: 5350903 (1994-09-01), Takei

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