Deforsting controller for electric refrigerator
    2.
    发明授权
    Deforsting controller for electric refrigerator 失效
    电冰箱的防锈控制器

    公开(公告)号:US3578754A

    公开(公告)日:1971-05-18

    申请号:US3578754D

    申请日:1969-02-25

    CPC classification number: F25D21/006 F25D2700/122 G05D23/1909 G05D23/24

    Abstract: A defrosting controller for electric refrigerators which is operated under control of a first transistor adapted for triggering a silicon-controlled rectifier depending upon the result detected by a temperature detector in the freezer of the refrigerator and under control of a second transistor for keeping the first transistor in one state during the defrosting operation so that the defrosting operation is automatically stopped as soon as the temperature within the freezer reaches a predetermined temperature after starting the defrosting operation. Thus, frost accumulated within the freezing compartment can completely be removed and an unnecessary temperature rise within the freezing and provisions compartments can be prevented.

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