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    Control circuit for driving, stopping and restarting a variable speed single-phase induction motor
    2.
    发明授权
    Control circuit for driving, stopping and restarting a variable speed single-phase induction motor 失效
    用于驱动，停止和重新启动变速单相电动机的控制电路

    公开(公告)号：US3633082A

    公开(公告)日：1972-01-04

    申请号：US3633082D

    申请日：1970-09-24

    Applicant: MATSUSHITA ELECTRONICS CORP ,  MATHUSHITA SEIKO CO LTD

    Inventor： HASEGAWA HIDENOBU ,  KUSUDA ZENJI ,  TANAKA AKIRA ,  NERITANI JINICHIRO

    IPC: F04D27/00 ,  H02P1/42 ,  H02P1/44 ,  H02P3/24 ,  H02P23/10 ,  H02P3/18

    CPC classification number: H02P1/44 ,  H02P1/42 ,  H02P23/10

    Abstract: A control circuit for driving, stopping and restarting a variable speed single-phase induction motor, in which when said motor is stopped from a running state by a DC braking means, the full voltage of the AC power source available for restarting the motor only for a predetermined time interval after it is stopped, regardless of the state of the running speed just before the stoppage. Three switches are provided for selectively connecting the AC power source, a DC power source for braking the motor, whereby the full starting torque is available to restart the motor in any state of the speed setting of the motor.

    Abstract translation: 一种用于驱动，停止和重新启动变速单相感应电动机的控制电路，其中当所述电动机通过直流制动装置从运行状态停止时，可用于重新启动电动机的交流电源的全电压仅用于 在停止之后的预定时间间隔，而不管停止之前的运行速度的状态如何。 提供三个开关，用于选择性地连接AC电源，用于制动电动机的DC电源，由此在电动机的速度设定的任何状态下可以使全部启动转矩重新启动电动机。

    Deforsting controller for electric refrigerator
    3.
    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

    Applicant: MATSUSHITA ELECTRONICS CORP

    Inventor： KUSUDA ZENJI ,  KOBAYASHI TAKEJI

    IPC: F25D21/08 ,  F24F11/02 ,  F25D21/00 ,  G05D23/24 ,  F25D21/06

    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.

    10.
    发明专利
    未知

    公开(公告)号：DE1909448A1

    公开(公告)日：1969-10-09

    申请号：DE1909448

    申请日：1969-02-25

    Applicant: MATSUSHITA ELECTRONICS CORP

    Inventor： KUSUDA ZENJI ,  KOBAYASHI TAKEJI

    IPC: F25D21/08 ,  F24F11/02 ,  F25D21/00 ,  G05D23/24

    Abstract: 1,194,317. Defrosting circuits. MATSUSHITA ELECTRONICS CORP. 20 Feb., 1969 [1 March, 1968], No. 9184/69. Heading H2H. [Also in Division F4] A defrosting control for an electric refrigerator has a thyristor 4 shunted by a diode 11 and capacitor 12, also a voltage divider 13, 8 normally maintaining a transistor 5 non-conductive. On closure of a manual or time switch 14, the transistor and thyristor are rendered conductive, the shunting effect of the thyristor across switch 14 maintaining the circuit conductive after switch 14 has opened, until the resistance of a thermistor 7 measuring freezer temperature drops to a low value indicative that the frost has melted. A switch 15 may be closed instantaneously to terminate operation of the circuit. The thyristor 4 may control a heater 3 or the operation of a valve admitting hot gas to the freezer.

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