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    • 4. 发明授权
    • Washing machine control method
    • 洗衣机控制方法
    • US07299515B2
    • 2007-11-27
    • US10729986
    • 2003-12-09
    • Soo Young OhJin Woong KimHyun Seok SeoTae Hee LeeJoon Woo KimKyung Chul Woo
    • Soo Young OhJin Woong KimHyun Seok SeoTae Hee LeeJoon Woo KimKyung Chul Woo
    • D06F35/00
    • D06F39/003D06F2202/065D06F2204/065Y02B40/56
    • A washing machine control method accurately determines an amount of laundry in the washing machine, while driving a motor coupled to a drum under load, based on a computed average of pulse width modulation values at the time of stopping the drive of a motor and the motor's rotational angle as the motor freewheels to a stop, in order to conserve water and reduce the time required for performing a washing step. The method includes steps accelerating a motor to a target rotational speed, by periodically applying to the motor a pulse width modulation (PWM) signal having a predetermined duty ratio; storing in a memory a set of PWM values corresponding to the signal applied in the accelerating step, by sensing a rotational speed of the motor; outputting a PWM signal having a duty ratio of zero, after the sensed motor speed reaches the target rotational speed, to allow the motor to freewheel to a stop; computing an average of the stored PWM values; measuring a rotational angle of the motor as the motor freewheels to a stop; calculating a laundry amount estimation value based on the average of the stored PWM values and the motor's rotational angle; and determining a laundry amount by comparing the calculated laundry amount estimation value to a set of laundry amount reference values stored in a lookup table. The laundry amount estimation value equals w1PWMave+w2θmotor, where PWMave is the computed average of the stored PWM values, θmotor is the measured rotational angle, and w1, and w2 are weight constants.
    • 洗衣机控制方法基于在停止电动机的驱动时的计算的脉冲宽度调制值的平均值和电动机的驱动时,精确地确定洗衣机中的衣物量,同时驱动耦合到负载的鼓的电动机 旋转角度随着电机的顺畅而停止,以节约用水并减少进行洗涤步骤所需的时间。 该方法包括通过周期地向电动机施加具有预定占空比的脉宽调制(PWM)信号来将电动机加速到目标转速的步骤; 通过感测所述电动机的转速,将与所述加速步骤中施加的信号相对应的一组PWM值存储在存储器中; 在感测到的电动机速度达到目标转速之后,输出占空比为零的PWM信号,以允许电动机飞行到停止位置; 计算存储的PWM值的平均值; 当电机自由停转时测量电机的旋转角度; 基于存储的PWM值和电动机的旋转角度的平均值来计算衣物量估计值; 以及通过将所计算的衣物量估计值与存储在查找表中的一组衣物量参考值进行比较来确定衣物量。 洗衣用量估计值等于w1&lt; 1&gt;&gt;&lt; 2&gt; 2&lt;&lt;&gt;&lt;&gt; 存储的PWM值的计算平均值,θ<电机是测量的旋转角度,w> 1 是体重常数。
    • 7. 发明授权
    • Drying unit for washing machines
    • 洗衣机干燥机
    • US07188437B2
    • 2007-03-13
    • US11036014
    • 2005-01-18
    • Tae Hee LeeSi Moon JeonHyun Seok Seo
    • Tae Hee LeeSi Moon JeonHyun Seok Seo
    • F26B11/02
    • D06F25/00D06F58/24
    • Disclosed herein is a drying unit for washing machines that is capable of fully drying the wet laundry using hot wind. A condensing duct and a drying duct are connected to a tub to circulate air in the tub. Between the drying duct and the condensing duct is disposed a drying fan. To the condensing duct is attached air cooling device for condensing air in the condensing duct by means of cool air. In the drying duct is mounted a drying heater for heating air in the drying duct to change the air into hot wind. During the drying operation of the washing machine, the air passing through the condensing duct is condensed by air, which is an unlimited resource. Consequently, consumption of energy and resources is minimized during the drying operation of the washing machine.
    • 本文公开了一种用于洗衣机的干燥单元,其能够使用热风完全干燥湿衣物。 冷凝管道和干燥管道连接到浴缸以使桶中的空气循环。 在干燥管道和冷凝管道之间设置干燥风扇。 冷凝管连接有冷却装置,用冷凝空气冷凝冷凝管中的空气。 在干燥管道中安装有用于在干燥管道中加热空气的干燥加热器,以将空气变成热风。 在洗衣机的干燥操作期间,通过冷凝管道的空气被空气冷凝,这是无限的资源。 因此,在洗衣机的干燥操作期间能量和资源的消耗被最小化。