Apparatus and method for mass flow control of a working fluid
    1.
    发明授权
    Apparatus and method for mass flow control of a working fluid 失效
    工作流体质量流量控制的装置和方法

    公开(公告)号:US5289692A

    公开(公告)日:1994-03-01

    申请号:US5606

    申请日:1993-01-19

    摘要: A mass flow control apparatus and method for use in combination with a heat transfer system having a compressor, condenser, expansion valve, evaporator and working fluid in a s fluid circuit. The mass flow is controlled using a quality sensor for the working fluid exiting the evaporator, and a high side pressure sensor. A control circuit is provided that monitors the quality sensor and the high side pressure sensor, and controls operation of the compressor, condenser fan and valve in response thereto. A flow reduction mode is used to reduce high side pressure at the valve inlet without excessive compressor cycling by changing the quality sensor setpoint when the high side pressure exceeds the condenser fan turn-on pressure but is less than the compressor disengage pressure.

    摘要翻译: 一种与流体回路中具有压缩机,冷凝器,膨胀阀,蒸发器和工作流体的传热系统组合使用的质量流量控制装置和方法。 使用用于离开蒸发器的工作流体的质量传感器和高侧压力传感器来控制质量流量。 提供了一种控制电路,其监测质量传感器和高侧压力传感器,并且响应于此控制压缩机,冷凝器风扇和阀的操作。 当高侧压力超过冷凝器风扇接通压力但小于压缩机脱离压力时,通过改变质量传感器设定值,使用流量减小模式来减小阀入口处的高侧压力而不需要过多的压缩机循环。