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31. 发明授权

US5557182A System and methods for controlling a draft inducer to provide a desired operating area 失效
标题翻译：用于控制牵引诱导器以提供期望的操作区域的系统和方法
公开(公告)号：US5557182A
公开(公告)日：1996-09-17
申请号：US299528
申请日：1994-09-01
申请人： Robert K. Hollenbeck , Mark A. Brattoli
发明人： Robert K. Hollenbeck , Mark A. Brattoli
IPC分类号： F23N1/06 , F23N3/08 , F23N5/18 , G05D13/30 , G05D16/20 , H02P6/08 , H02P7/00
CPC分类号： F23N1/062 , F23N3/082 , G05D13/30 , G05D16/2066 , F23N2025/04 , F23N2025/06 , F23N2033/04 , F23N5/18 , H02P6/08
摘要： A system and methods to provide a desired operating area for a motor driving a fan for inducing a draft in a vent of a heating, ventilating and air conditioning system. The motor includes a stationary assembly and a rotatable assembly. The stationary assembly includes windings adapted to be energized in at least one preselected sequence. The rotatable assembly is in magnetic coupling relation to the stationary assembly and in driving relation to the fan. The system includes a commutating circuit responsive to a pressure signal representative of a minimum air pressure in the vent and a tachometer signal representative of the speed of the motor for controlling power switching devices. The power switching devices selectively connect a power supply to the windings to provide a motor current to the windings in the preselected sequence to produce an electromagnetic field for rotating the rotatable assembly at a motor operating speed. A control circuit limits the motor current provided to the windings by the power switching devices to a predetermined maximum current which is a function of the motor operating speed as represented by the tachometer signal. In this manner, the control circuit inhibits operation of the motor outside a pre-defined speed/current region by preventing the motor current at a particular motor operating speed from exceeding the predetermined maximum current. The predetermined maximum current is within the pre-defined speed/current region and corresponds to the particular motor operating speed so that excessive heat is not generated by the system.
摘要翻译：一种用于为驱动风扇的电机提供期望的操作区域的系统和方法，用于在加热，通风和空调系统的通风口中引起牵引。电动机包括固定组件和可旋转组件。固定组件包括适于以至少一个预选序列通电的绕组。可旋转组件与静止组件处于磁耦合关系并且与风扇的驱动关系。该系统包括响应于表示通气口中的最小气压的压力信号的换向电路和表示用于控制功率开关装置的电机速度的转速计信号。功率开关装置选择性地将电源连接到绕组，以按预选序列向绕组提供电动机电流，以产生用于以电动机运行速度旋转可旋转组件的电磁场。控制电路将由功率开关装置提供给绕组的电动机电流限制为由转速计信号表示的作为电动机运行速度的函数的预定最大电流。以这种方式，控制电路通过防止在特定的电机运行速度下的电动机电流超过预定的最大电流来禁止电动机在预定的速度/电流区域外的操作。预定的最大电流在预定义的速度/电流区域内，并且对应于特定的电动机操作速度，使得系统不会产生过多的热量。

32. 发明授权

US4411664A Washing machine with out-of-balance detection and correction capability 失效
标题翻译：洗衣机具有不平衡检测和校正能力
公开(公告)号：US4411664A
公开(公告)日：1983-10-25
申请号：US373591
申请日：1982-04-30
申请人： Jimmy R. Rickard , Robert K. Hollenbeck
发明人： Jimmy R. Rickard , Robert K. Hollenbeck
IPC分类号： D06F37/20 , D06F23/04 , D06F33/02
CPC分类号： D06F37/203
摘要： An automatic clothes washing appliance of the vertical axis type for a clothes washing operation having a plurality of cycles including wash and spin cycles incorporating a tub, a clothes receiving basket movably supported in the tub, means for distributing fill water to the articles received in the basket, and a drive motor which selectively drives the basket for a wash mode and a spin mode. The control system for the appliance includes an arrangement for detecting the existence of a basket out-of-balance condition in the spin mode and initiates a rebalance operation which includes means to measure the basket rotational speed during the spin mode and means responsive to detection of basket rotational speed being less than a predetermined normal balanced basket rotational speed at a predetermined time in the spin cycle to interrupt the spin cycle and to actuate a rebalance cycle and thereafter to resume the spin cycle.
摘要翻译：一种用于衣物洗涤操作的自动洗衣机，具有多个循环，包括洗涤和旋转循环，包括洗涤桶，可移动地支撑在浴缸中的衣物接收篮，用于将填充水分配到接收在容器中的物品的装置篮子和驱动马达，其选择性地驱动篮子进行洗涤模式和旋转模式。用于器具的控制系统包括用于检测旋转模式中篮子不平衡状态的存在并启动重新平衡操作的装置，该重新平衡操作包括在旋转模式期间测量篮筐转速的装置，以及响应于检测到筐旋转速度在旋转周期中的预定时间小于预定的正常平衡筐旋转速度，以中断旋转循环并致动重新平衡循环，然后恢复旋转循环。

33. 发明授权

US4409532A Start control arrangement for split phase induction motor 失效
标题翻译：分相感应电动机的启动控制装置
公开(公告)号：US4409532A
公开(公告)日：1983-10-11
申请号：US318717
申请日：1981-11-06
申请人： Robert K. Hollenbeck , Jimmy R. Rickard
发明人： Robert K. Hollenbeck , Jimmy R. Rickard
IPC分类号： H02P1/42 , H02P23/00 , H02P3/20 , H02P1/24
CPC分类号： H02P1/42 , H02P23/24
摘要： A control arrangement for a reversible alternating current split phase induction motor of the type having a start winding electrically connected in parallel with a run winding, which controls the duty cycle of current in the start winding to selectively initiate rotation of the motor in the desired direction.In one form of the invention, a thyristor switching device is connected in series with the start winding to phase control the start winding current. An electronic controller triggers the thyristor into conduction at a first firing angle to initiate motor rotation in one direction and at a second firing angle to initiate motor rotation in the other direction. The first firing angle is less than 45.degree. and preferably in the range of 25.degree.-45.degree. relative to the supply voltage signal and the second firing angle is preferably in the range of 90.degree.-135.degree. relative to the supply voltage signal.In another form of the invention, the control arrangement additionally includes a monitoring circuit which monitors the phase angle between line voltage and run winding current. The controller is responsive to the monitoring circuit to inhibit thyristor trigger signals to the start winding thyristor when a predetermined relationship exists between the phase angle and a reference value, thereby effectively switching the start winding out of the circuit when the motor gets up to speed.
摘要翻译：一种用于可逆交流分流式感应电动机的控制装置，该电动机具有起动绕组，其与起动绕组并联电连接，该起动绕组控制起动绕组中的电流的占空比，以选择性地启动电动机沿期望方向的旋转。在本发明的一种形式中，晶闸管开关器件与起动绕组串联连接以对起动绕组电流进行相位控制。电子控制器以第一触发角触发晶闸管导通，以在一个方向和第二触发角度启动电动机旋转，以启动另一个方向上的电动机旋转。第一触发角相对于电源电压信号小于45°，优选在25°-45°的范围内，第二触发角相对于电源电压信号优选在90°-135°的范围内。在本发明的另一形式中，控制装置还包括一监视电路，其监测线路电压和运行绕组电流之间的相位角。当相位角与参考值之间存在预定的关系时，控制器响应于监控电路来阻止晶闸管触发信号到启动绕组晶闸管，从而当电机达到转速时有效地将启动绕组从电路切换出来。

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