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    • 76. 发明申请
    • VARIABLE FREQUENCY DRIVE APPARATUSES, SYSTEMS, AND METHODS AND CONTROLS FOR SAME
    • 可变频率驱动装置,系统及其方法和控制
    • US20140260343A1
    • 2014-09-18
    • US14207884
    • 2014-03-13
    • TRANE INTERNATIONAL INC.
    • Raymond Walter RiteChuan YanBill Brandt
    • F25B49/02
    • F25B49/022F04C18/0215F04C28/06F04C28/28F04C2240/403F04C2270/14F04C2270/18F04C2270/19F04C2270/72F25B2339/047F25B2500/26
    • Detection of reverse rotation or operation of a refrigerant compressor is provided. In one aspect, a detection technique includes starting the compressor and determining the compressor is rotating in a reverse direction if a dome temperature of the compressor fails to exceed a first predetermined threshold at or before expiration of a first predetermined period of time following starting, the refrigerant pressure at a refrigerant inlet of the compressor remains constant for a second predetermined period of time following starting, and/or the frequency of pressure oscillations of the refrigerant at the refrigerant inlet exceeds a second predetermined threshold. Another technique for determining the compressor is rotating in the reverse direction involves analyzing a waveform associated with motor current, motor torque, or refrigerant pressure. Further embodiments, forms, features, and aspects shall become apparent from the description and drawings.
    • 提供了制冷剂压缩机的反向旋转或操作的检测。 在一个方面,检测技术包括起动压缩机并且如果压缩机的圆顶温度在启动之后的第一预定时间段的期满或之前压缩机的圆顶温度不能超过第一预定阈值,则确定压缩机正在相反方向旋转, 压缩机的制冷剂入口处的制冷剂压力在启动后的第二预定时间段内保持恒定,和/或制冷剂入口处的制冷剂的压力振荡频率超过第二预定阈值。 用于确定压缩机的另一技术是在相反方向旋转,包括分析与电动机电流,电动机转矩或制冷剂压力相关联的波形。 从描述和附图,其他实施例,形式,特征和方面将变得显而易见。