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    • 10. 发明公开
    • An automatic temperature control system for a vehicle passenger compartment
    • 系统自动化Temperatursteuerung eines Fahrgastrauses eines Fahrzeuges。
    • EP0021745A1
    • 1981-01-07
    • EP80301994.2
    • 1980-06-13
    • EATON CORPORATION
    • Franz, Rudolf Joseph
    • B60H3/04G05D23/19
    • G05D23/1925B60H1/00807B60H1/00821B60H1/3205B60H2001/3266B60H2001/327
    • Ambient or recirculated air is passed through a housing containing an evaporator core (20) and a heating core (22) by means of a blower (18). The control system comprises an automatic temperature control sensor (32) which provides a modulated vacuum control signal for a vacuum motor (40) which has an output which adjusts a biasing element in a pressure operated electrical switch (30), resulting in on/off duty cycling of an electrically energizable clutch (28) which transmits power from the vehicle engine to the cooling unit compressor (26). The percentage of time that the compressor is on versus the time off is a function of the control signal which is in turn a function ofthe ambient, in-car, and manually selected set point temperatures sensed by the sensor (32). At ambient temperatures below a predetermined minimum the control signal shuts off the compressor and places the system in a heating mode by deflecting air onto the heater core (22) via a blend door (62) operated by a vacuum motor (38) under the control of the sensor (32). The system prevents needless cooling of ambient air prior to heating, thus saving power. During the cooling mode, the cooling unit is energized only as needed to maintain the passenger compartment at the set-point temperature, thus minimizing power usage.
      Vacuum motor (68) operates in response to engine acceleration to cut out the compressor and thereby improve vehicle performance.
    • 环境或再循环空气通过鼓风机(18)通过包含蒸发器芯(20)和加热芯(22)的壳体。 该控制系统包括自动温度控制传感器(32),该自动温度控制传感器(32)为真空马达(40)提供调制的真空控制信号,该真空电机具有调节压力操作的电气开关(30)中的偏置元件的输出,导致开/关 能够将动力从车辆发动机传递到冷却单元压缩机(26)的电能离合器(28)的负载循环。 压缩机开启的时间与关闭时间的百分比是控制信号的函数,控制信号又是由传感器(32)感测的环境,车内和手动选择的设定点温度的函数。 在低于预定最小值的环境温度下,控制信号关闭压缩机,并通过在真空马达(38)控制下经由混合门(62)将空气偏转到加热器芯(22)上而将系统置于加热模式 的传感器(32)。 该系统防止在加热之前对周围空气进行不必要的冷却,从而节省电力。 在冷却模式期间,冷却单元仅在需要时被激活以将乘客舱保持在设定点温度,从而最小化功率使用。 ...真空马达(68)响应于发动机加速而工作以切断压缩机,从而提高车辆性能。