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    • 33. 发明授权
    • Washing machine wiring to reduce mechanical timer contact welding
    • 洗衣机布线减少机械定时器接触焊接
    • US08022657B2
    • 2011-09-20
    • US12348647
    • 2009-01-05
    • James E. PearsonRichard Louis Elkin
    • James E. PearsonRichard Louis Elkin
    • H02P1/42
    • H02P1/58D06F37/306
    • A control circuit for a washing machine that avoids contact bounce short circuit failures is provided. A washing machine that utilizes an induction motor including a starting winding used to start rotation of the motor at the beginning of a cycle. Such washing machines require that the motor be operated in both directions during different cycles. To enable such operation, a mechanical timer uses a pair of single pole, double throw switches in a switching assembly to reverse the L1 and neutral connections to the starter winding. To avoid the contact shorting problem, the control wiring runs either the L1 or neutral side of the voltage source, or both, through the centrifugal switch to open the input contact(s) once the motor has reached its operating speed. Then, if the switching assembly has L1 and N contacts touching at the same time, it will not result in a dead short.
    • 提供了一种避免接触反弹短路故障的洗衣机控制电路。 一种洗衣机,其使用包括用于在循环开始时开始电机旋转的起动绕组的感应电动机。 这种洗衣机要求在不同的循环期间电动机在两个方向上操作。 为了实现这种操作,机械定时器在开关组件中使用一对单极双掷开关来反转与起动绕组的L1和中性点连接。 为了避免接触短路问题,控制线路通过离心开关运行电压源的L1或中性侧或两者,一旦电机达到其运行速度就打开输入触点。 然后,如果开关组件的L1和N触点同时接触,则不会导致死区短路。
    • 34. 发明申请
    • Washing Machine Wiring to Reduce Mechanical Timer Contact Welding
    • 洗衣机接线以减少机械定时器触点焊接
    • US20100171449A1
    • 2010-07-08
    • US12348647
    • 2009-01-05
    • James E. PearsonRichard Louis Elkin
    • James E. PearsonRichard Louis Elkin
    • H02P1/58
    • H02P1/58D06F37/306
    • A control circuit for a washing machine that avoids contact bounce short circuit failures is provided. A washing machine that utilizes an induction motor including a starting winding used to start rotation of the motor at the beginning of a cycle. Such washing machines require that the motor be operated in both directions during different cycles. To enable such operation, a mechanical timer uses a pair of single pole, double throw switches in a switching assembly to reverse the L1 and neutral connections to the starter winding. To avoid the contact shorting problem, the control wiring runs either the L1 or neutral side of the voltage source, or both, through the centrifugal switch to open the input contact(s) once the motor has reached its operating speed. Then, if the switching assembly has L1 and N contacts touching at the same time, it will not result in a dead short.
    • 提供了一种避免接触反弹短路故障的洗衣机控制电路。 一种洗衣机,其使用包括用于在循环开始时开始电机旋转的起动绕组的感应电动机。 这种洗衣机要求在不同的循环期间电动机在两个方向上操作。 为了实现这种操作,机械定时器在开关组件中使用一对单极双掷开关来反转与起动绕组的L1和中性点连接。 为了避免接触短路问题,控制线路通过离心开关运行电压源的L1或中性侧或两者,一旦电机达到其运行速度就打开输入触点。 然后,如果开关组件的L1和N触点同时接触,则不会导致死区短路。