Valve control system, valve control apparatus and valve control method
    1.
    发明授权
    Valve control system, valve control apparatus and valve control method 有权
    阀门控制系统,阀门控制装置和阀门控制方法

    公开(公告)号:US07762094B2

    公开(公告)日:2010-07-27

    申请号:US11378044

    申请日:2006-03-17

    IPC分类号: F25B41/04 F16K31/02

    摘要: In a refrigeration cycle system, temperature sensors measure the temperatures Tin and Tout of a refrigerant at the entrance and exit of an evaporator. A control circuit performs PID calculation based on signals from the temperature sensors in order to control a degree of superheat corresponding to the difference between the temperatures Tin and Tout at the entrance and exit to an aimed value, and calculates an operation amount for the opening degree of an expansion valve. In a case where the operation amount exceeds the limit of realizable velocity of driving an actuator that actuates the expansion valve, the control circuit performs a limiter process for limiting the operation amount so as not to exceed the limit value. The control circuit drives the actuator by using the operation amount after subjected to the limiter process, thereby to stably control the opening degree of the expansion valve.

    摘要翻译: 在制冷循环系统中,温度传感器测量蒸发器入口和出口处制冷剂的温度Tin和Tout。 控制电路基于来自温度传感器的信号进行PID计算,以便控制与出入口处的温度Tin和Tout之间的温差相对应的过热度到目标值,并计算开度的操作量 的膨胀阀。 在操作量超过驱动促动膨胀阀的致动器的可实现速度的极限的情况下,控制电路执行用于限制操作量以使其不超过限制值的限制器处理。 控制电路通过使用经过限制器处理后的操作量驱动致动器,从而稳定地控制膨胀阀的开度。

    Valve control system, valve control apparatus and valve control method
    2.
    发明申请
    Valve control system, valve control apparatus and valve control method 有权
    阀门控制系统,阀门控制装置和阀门控制方法

    公开(公告)号:US20060213208A1

    公开(公告)日:2006-09-28

    申请号:US11378044

    申请日:2006-03-17

    IPC分类号: F25B41/04 F25B41/06

    摘要: In a refrigeration cycle system, temperature sensors measure the temperatures Tin and Tout of a refrigerant at the entrance and exit of an evaporator. A control circuit performs PID calculation based on signals from the temperature sensors in order to control a degree of superheat corresponding to the difference between the temperatures Tin and Tout at the entrance and exit to an aimed value, and calculates an operation amount for the opening degree of an expansion valve. In a case where the operation amount exceeds the limit of realizable velocity of driving an actuator that actuates the expansion valve, the control circuit performs a limiter process for limiting the operation amount so as not to exceed the limit value. The control circuit drives the actuator by using the operation amount after subjected to the limiter process, thereby to stably control the opening degree of the expansion valve.

    摘要翻译: 在制冷循环系统中,温度传感器测量蒸发器入口和出口处制冷剂的温度Tin和Tout。 控制电路基于来自温度传感器的信号进行PID计算,以便控制与出入口处的温度Tin和Tout之间的温差相对应的过热度到目标值,并计算开度的操作量 的膨胀阀。 在操作量超过驱动促动膨胀阀的致动器的可实现速度的极限的情况下,控制电路执行用于限制操作量以使其不超过限制值的限制器处理。 控制电路通过使用经过限制器处理后的操作量驱动致动器,从而稳定地控制膨胀阀的开度。