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    • 8. 发明授权
    • Washing machine
    • 洗衣机
    • US4893484A
    • 1990-01-16
    • US254230
    • 1988-10-06
    • Toshihiro TakahashiHideyuki TobitaKoichi ItoShigeharu Nakano
    • Toshihiro TakahashiHideyuki TobitaKoichi ItoShigeharu Nakano
    • D06F33/02D06F39/00
    • D06F33/02D06F39/005D06F2210/00
    • By using a relay of which contact is opened or closed in response to a signal from instruction and control unit, an electric power is supplied to a load unit through the contact of the relay. The relay is such that a power switch is turned on to excite a coil for closing the contact thereof. When a reserved operation is performed, the relay is turned off in response to the signal from the instruction and control unit at the time at which a reserved time and the contents of the reserved operation have been set. When the time to start the reserved operation comes, the relay is turned on again in response to the signal from the instruction and control unit to start a supply of electric power to the load unit. Power is not applied to the load unit during the waiting period until the reserved operation starts. Thus, the malfunction of the load unit due to the deterioration of the semiconductor switching elements is prevented, and a safer washing machine can be obtained.
    • 通过使用响应于来自指令和控制单元的信号来打开或关闭触点的继电器,通过继电器的接触将电力提供给负载单元。 继电器使得电源开关接通以激发用于闭合其接触的线圈。 当执行保留操作时,响应于来自指令和控制单元的信号,在保留时间和预约操作的内容已被设置时,继电器被关闭。 当开始预约操作的时间到来时,响应于来自指令和控制单元的信号再次接通继电器以开始向负载单元供电。 在预约操作开始之前的等待期间,功率不会施加到负载单元。 因此,防止了由于半导体开关元件的劣化引起的负载单元的故障,并且可以获得更安全的洗衣机。