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    Dual mode control of a variable displacement refrigerant compressor
    1.
    发明授权
    Dual mode control of a variable displacement refrigerant compressor 有权
    可变排量制冷压缩机的双模式控制

    公开(公告)号：US6038871A

    公开(公告)日：2000-03-21

    申请号：US197963

    申请日：1998-11-23

    申请人： Ernesto Jose Gutierrez ,  Charles Andrew Archibald ,  Christopher M. Kachur ,  Giles M. Brandon

    发明人： Ernesto Jose Gutierrez ,  Charles Andrew Archibald ,  Christopher M. Kachur ,  Giles M. Brandon

    IPC分类号： B60H1/32 ,  F04B27/08 ,  F04B27/18 ,  F04B49/06 ,  F25B49/02 ,  F25B1/00

    CPC分类号： F25B49/022 ,  B60H1/3216 ,  F04B27/0895 ,  F04B27/1804 ,  F04B49/065

    摘要： An improved control method for an electronically controlled variable displacement refrigerant compressor, where the control has normal and high speed displacement control modes, with smooth transitions between such control modes. The displacement control mechanism is in the form of a solenoid valve, and the valve is pulse-width-modulated (PWM) at a variable duty cycle to regulate displacement of the compressor. When the compressor is operating in a normal speed range, a first control mode determines a normal PWM duty cycle to satisfy cooling demand; when the compressor is operating in a high speed range, a second control mode determines an alternate PWM duty cycle based on compressor speed. The solenoid valve is operated in accordance with the duty cycle corresponding to the lower displacement. A smooth transition from the normal control mode to the high speed control mode is achieved by scheduling the alternate duty cycle as a function of compressor speed. Once in the high speed control mode, the parameters of the first control mode are adjusted so that the normal duty cycle matches the alternate duty cycle. This ensures a smooth transition from the high speed control mode to the normal control mode when the compressor speed falls back into the normal speed range.

    摘要翻译： 一种电子控制可变排量制冷剂压缩机的改进的控制方法，其中控制具有正常和高速位移控制模式，在这种控制模式之间具有平滑的过渡。 位移控制机构是电磁阀的形式，并且阀以可变的工作周期进行脉宽调制（PWM）以调节压缩机的位移。 当压缩机在正常速度范围内工作时，第一控制模式决定正常的PWM占空比以满足冷却需求; 当压缩机在高速范围内运行时，第二控制模式基于压缩机速度确定替代的PWM占空比。 电磁阀根据对应于较低位移的占空比进行操作。 通过调整作为压缩机速度的函数的替代占空比来实现从正常控制模式到高速控制模式的平滑过渡。 一旦进入高速控制模式，调整第一控制模式的参数，使得正常占空比与备用占空比匹配。 这确保了当压缩机速度回到正常速度范围时从高速控制模式到正常控制模式的平稳过渡。

    Method for the diagnosis of an air conditioning system
    3.
    发明授权
    Method for the diagnosis of an air conditioning system 失效
    空调系统诊断方法

    公开(公告)号：US06240733B1

    公开(公告)日：2001-06-05

    申请号：US09488858

    申请日：2000-01-21

    申请人： Giles M. Brandon ,  Charles Andrew Archibald ,  Christopher M. Kachur

    发明人： Giles M. Brandon ,  Charles Andrew Archibald ,  Christopher M. Kachur

    IPC分类号： G01K1300

    CPC分类号： F25B49/005 ,  F24F11/36 ,  F25B49/022

    摘要： In a method for the diagnosis of an air conditioning system having a condenser, an evaporator, an expansion device and a compressor, the stroke of which can be set via a valve, a maximum compressor stroke is set abruptly when the air conditioning system is running and a pressure impulse arising in the high pressure side of the refrigerant circuit is measured in order to determine the degree of filling of the refrigerant circuit.

    摘要翻译： 在用于诊断具有冷凝器，蒸发器，膨胀装置和压缩机的空调系统的方法中，其行程可以经由阀设定，当空调系统运行时，最大压缩机冲程突然设定 并且测量在制冷剂回路的高压侧产生的压力脉冲，以便确定制冷剂回路的填充程度。