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    • 37. 发明授权
    • Blocked condenser airflow protection for refrigeration systems
    • 制冷系统阻塞冷凝器气流保护
    • US4722018A
    • 1988-01-26
    • US806608
    • 1985-12-09
    • Walter J. Pohl
    • Walter J. Pohl
    • H02H3/07H02H7/08
    • H02H7/08H02H3/07
    • Refrigeration system control systems and methods for protecting a refrigerant motor/compressor, for example in an air conditioner, against conditions of excessive loading. The systems and methods of the invention recognize and distinguish between conditions of high operating load and insufficient condenser airflow, and take appropriate action for each. High operating load conditions are responded to by providing a motor/compressor cool-down interval, followed by a restart, so that an air conditioner remains operating at its maximum capacity, consistent with the field conditions. Insufficient condenser airflow conditions are responded to by eventually terminating operation of the motor/compressor until, for example, a service technician is called. Operation is based on a recognition that excessive loading conditions are manifested much sooner when the cause is insufficient condenser airflow than when the cause is a high operating load. In the disclosed embodiments, loading on the motor/compressor is sensed, and the motor/compressor is de-energized when a condition of excessive loading is recognized, whatever the cause. After a cool-down interval, the motor/compressor is re-energized, but a count is maintained of the number of times the motor/compressor is de-energized in response to a recognized condition of excessive loading. In order to distinguish between blocked condenser airflow conditions and conditions of excessive load, operation is terminated permanently when the count reaches a predetermined number such as six, but the count is reset when continuous run time exceeds eight minutes.
    • 制冷系统控制系统和用于例如在空调器中保护制冷剂电动机/压缩机的方法,以防止过度负载的情况。 本发明的系统和方法识别和区分高运行负荷和冷凝器气流不足的条件,并对每一个采取适当的动作。 通过提供电机/压缩机冷却间隔,然后重启,响应高工作负载条件,使空调器保持与其现场条件一致的最大容量运行。 通过最终终止电动机/压缩机的操作来响应冷凝器气流条件不足,直到例如维修技术人员被调用为止。 操作基于这样的认识:当原因不足于冷凝器气流时,过多的负载条件比起因于高操作负载时更早地表现出来。 在所公开的实施例中,感测到电动机/压缩机上的负载,并且当识别到过度负载的状况时,马达/压缩机被断电,无论是什么原因。 在冷却间隔之后,电动机/压缩机被重新通电,但是响应于已识别到的过度负载的情况,维持电动机/压缩机断电次数。 为了区分阻塞的冷凝器气流条件和过载的情况,当计数达到预定数量(例如6)时,永久地停止运行,但是当连续运行时间超过8分钟时,计数被复位。
    • 39. 发明授权
    • Distribution line powered switchgear control
    • 配电线路供电开关柜控制
    • US4562506A
    • 1985-12-31
    • US580029
    • 1984-02-14
    • Richard J. Moran
    • Richard J. Moran
    • H02H1/06H02H3/093H02H7/22H02H3/07
    • H02H3/093H02H1/063
    • A distribution line powered switchgear control is provided which reliably initiates switchgear operations with stored energy. Stored energy is preferably maintained in a plurality of devices including a power capacitor. The power capacitor is preferably charged by a fast arming circuit which preferably selects among a plurality of independent power sources. The switchgear control additionally isolates sources of stored energy so that depletion of one does not affect the others. Further the switchgear control will preferably prevent closing of the switchgear unless sufficient energy is stored to allow the control to initiate a subsequent opening of the switchgear.
    • 提供配电线供电的开关柜控制,可靠地启动具有存储能量的开关柜操作。 存储的能量优选地保持在包括功率电容器的多个装置中。 功率电容器优选地由快速布防电路充电,该快速布防电路优选在多个独立电源之间进行选择。 开关柜控制器另外隔离存储的能量来源,使得一个的耗尽不影响其他的。 此外,开关柜控制将优选地防止闭合开关装置,除非存储足够的能量以允许控制开始随后打开开关装置。
    • 40. 发明授权
    • Sectionalizer
    • 分片器
    • US4553188A
    • 1985-11-12
    • US497938
    • 1983-05-25
    • David R. AubreyStephen J. Kearley
    • David R. AubreyStephen J. Kearley
    • H01H71/14H02H3/06H02H3/07
    • H02H3/063H01H71/14
    • A method of isolating a spur line of an electrical power system protected by a multi-shot resetting circuit breaker wherein at least two successive current surges in the spur line which activate the circuit breakers are detected. In response to the detection the spur line is isolated during a subsequent current dead period.A sectionalizer is described for isolating a spur line of an electrical power system protected by a multi-shot resetting circuit breaker. The sectionalizer comprises a metal casing 22 providing a current path across a fuse mounting 10 while the sectionalizer is in a conducting position. An electrical circuit 23 inside the tube detects at least two successive current surges in the casing and during the following dead period actuates a chemical actuator 14 to trip the sectionalizer out of its conducting position.
    • 一种隔离由多重复位断路器保护的电力系统的支线的方法,其中检测到激励断路器的支线中的至少两个连续的电流浪涌。 响应于检测,支线在随后的当前死区期间被隔离。 描述了用于隔离由多重复位断路器保护的电力系统的支线的分段器。 分段器包括金属壳体22,当分段器处于导通位置时,金属壳体22提供穿过保险丝安装件10的电流路径。 管内的电路23检测壳体中至少两个连续的电流浪涌,并且在随后的死区期间致动化学致动器14以使分段器脱离其导通位置。