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    • 3. 发明公开
    • FOOD WASTE DISPOSER WITH PWM BASED CONTROL OF GRINDING PROFILE
    • 麻省理工学院学位论文基于PWM的BASICERTER STEUERUNG DES SCHLEIFPROFILS
    • EP2185288A2
    • 2010-05-19
    • EP08829607.4
    • 2008-09-05
    • Emerson Electric Co.
    • HIRSCH, Nicholas J.PLUME, Steven Harry
    • B02C23/36B02C25/00
    • B02C18/0092B02C18/24E03C1/2665H02P3/06
    • A food waste disposer has a motor driven with pulse width modulation ('PWM'). A grinding profile is controlled based on PWM values of the PWM controller driving the motor. In an aspect, controlling the grinding profile includes varying the speed of the motor based on the PWM values. In an aspect, the grinding profile is initiated after the food waste disposer is started and a PWM value exceeds a set value indicating the presence of a grinding load in a grinding section of the food waste disposer. In an aspect, it is determined that the grinding load has been sufficiently ground once the PWM value does not exceed a first set value after the grinding profile has been initiated. In an aspect, corrective action is initiated when the PWM value exceeds the set value after a predetermined period of time.
    • 食物垃圾处理机具有用脉宽调制(“PWM”)驱动的电动机。 基于驱动电机的PWM控制器的PWM值来控制磨削轮廓。 在一方面,控制磨削轮廓包括基于PWM值来改变电动机的速度。 在一方面,在食物垃圾处理器启动之后开始研磨轮廓,并且PWM值超过表示在食物垃圾处理器的研磨部分中存在研磨载荷的设定值。 在一方面,在磨削轮廓已经开始之后,一旦PWM值不超过第一设定值,就确定研磨载荷已经足够接地。 在一个方面,当在预定时间段之后PWM值超过设定值时,启动校正动作。
    • 4. 发明公开
    • IMPROVED PULPER ROTOR AND ASSEMBLY
    • 改进的碎浆机转子和组装
    • EP1594597A4
    • 2007-03-07
    • EP04701760
    • 2004-01-13
    • KADANT BLACK CLAWSON INC
    • EGAN III JOHN JGREIER DONALD J
    • B01F1/00B01F20060101B02C23/36D21B1/34
    • D21B1/347
    • An improved pulper, mixer or defibering, rotor having a spar ring attached to a hub of the rotor with a series of curved vanes projecting from the spar ring. The curved vanes have a vane face and a trailing edge. The trailing edge may be unitary and integral with the vane, or may be segmented in combination with trailing edge portion provided on an underlying spar stub to which the vanes are attached. The hydrodynamic suction created by the trailing edge is enhanced by the addition of a dam at the vane tip end of the trailing edge zone. The vanes have a constant vane face angle relative to radians extending outward from the hub of the rotor. As a result of the constant vane face angle the pulp, or other materials, mixed by the vanes during rotation of the rotor are more consistently in contact with the vanes during rotation of the rotor. The vanes are also streamlined to reduce hydrodynamic drag especially at the vane tips where speed and therefore drag potential are at their highest levels. As a result, increased circulation and pumping effects with minimal power requirements are achieved. The vanes may be made of high wear resistant materials and are easily accessible for maintenance, repair or replacement.