Suction service valve
    1.
    发明授权
    Suction service valve 失效
    吸气阀

    公开(公告)号:US5829265A

    公开(公告)日:1998-11-03

    申请号:US672761

    申请日:1996-06-28

    摘要: A service valve for isolating the compressor of a chiller system from a flooded evaporator cooler that includes a suction pipe mounted in the top section of the evaporator that extends downwardly into the evaporator shell and a shut-off valve mounted inside the shell that is arranged to close against the bottom opening of the suction pipe. The valve is connected by linkage to a shaft that passes through the suction pipe outside the evaporator which when rotated, permits the valve to be opened and closed.

    摘要翻译: 一种用于将冷却器系统的压缩机与淹没的蒸发器冷却器隔离的维修阀,所述蒸发器冷却器包括安装在蒸发器的顶部部分中的向下延伸到蒸发器壳体中的吸入管和安装在壳体内部的截止阀, 靠近吸入管的底部开口。 阀通过联动连接到通过蒸发器外部的吸入管的轴,当旋转时,允许阀打开和关闭。

    Dual inlet oil separator for a chiller
    2.
    发明授权
    Dual inlet oil separator for a chiller 失效
    用于冷却器的双入口油分离器

    公开(公告)号:US5735139A

    公开(公告)日:1998-04-07

    申请号:US673375

    申请日:1996-06-28

    IPC分类号: F25B43/02

    CPC分类号: F25B43/02

    摘要: An oil separator for a refrigeration system having two inlets for receiving two streams of a mixture of oil and refrigerant for separation. One inlet is on each side of the oil separator. This allows for a separator with a smaller diameter to be used to achieve the same preferred speed of travel of the oil-refrigerant mixture.

    摘要翻译: 一种用于制冷系统的油分离器,具有两个入口,用于接收两股用于分离的油和制冷剂的混合物流。 一个入口在油分离器的每一侧。 这允许使用具有较小直径的分离器来实现相同的优选的油 - 制冷剂混合物的行进速度。

    Compressor oil pressure control method
    3.
    发明授权
    Compressor oil pressure control method 失效
    压缩机油压控制方法

    公开(公告)号:US5724821A

    公开(公告)日:1998-03-10

    申请号:US671970

    申请日:1996-06-28

    IPC分类号: F04C29/02 F25B31/00 F25B43/02

    摘要: The present invention is a method for controlling oil lubricant pressure of a screw type compressor in an air conditioning system. In response to a low oil pressure condition, evaporator pressure is lowered to increase the pressure differential across a compressor, to thereby bring about an increase in oil pressure. Evaporator pressure can be lowered by decreasing the maximum operating pressure of the evaporator, and by throttling an expansion valve by the amount required to lower the evaporator pressure in accordance with the reduced maximum operating setpoint.

    摘要翻译: 本发明是一种用于控制空调系统中的螺杆式压缩机的油润滑油压力的方法。 响应于低油压条件,蒸发器压力降低以增加压缩机两端的压力差,从而导致油压的增加。 通过降低蒸发器的最大工作压力,并通过根据减小的最大工作设定点将膨胀阀节流到降低蒸发器压力所需的量来降低蒸发器压力。

    Flash tank economizer
    4.
    发明授权
    Flash tank economizer 失效
    闪蒸罐节能器

    公开(公告)号:US5692389A

    公开(公告)日:1997-12-02

    申请号:US672745

    申请日:1996-06-28

    摘要: A flash tank economizer containing a first expansion device to expand high pressure refrigerant from a system condenser to an intermediate pressure and a second expansion device for further expanding liquid refrigerant at the intermediate pressure that has collected in the tank to a desired low pressure for delivery to the system evaporator. Vapor phase refrigerant produced by the first expansion in the tank is injected back into the system compressor at the intermediate pressure.

    摘要翻译: 一种闪蒸罐节能器,其包含用于将高压制冷剂从系统冷凝器膨胀至中压的第一膨胀装置和用于在已经收集在罐中的中压下将液体制冷剂进一步膨胀至期望的低压以输送至 系统蒸发器。 通过罐中的第一膨胀产生的气相制冷剂在中压下被注回到系统压缩机中。

    Electronic program control for a refrigeration unit
    5.
    发明授权
    Electronic program control for a refrigeration unit 失效
    制冷机组的电子程序控制

    公开(公告)号:US4545210A

    公开(公告)日:1985-10-08

    申请号:US597331

    申请日:1984-04-06

    申请人: Richard G. Lord

    发明人: Richard G. Lord

    摘要: Programmable headers with fixed jumpers are used at the input of a microprocessor to develop a binary code for use by the microprocessor to configure the microprocessor to the physical characteristics of an assembled refrigeration unit. The programmable header is programmed at the factory by selectively breaking the jumpers to develop the binary code. The programming of the microprocessor for accessory equipment can be performed by field service personnel by using small DIP switches to develop a binary code for the microprocessor.

    摘要翻译: 在微处理器的输入端使用具有固定跳线的可编程报头,以开发二进制代码,以供微处理器将微处理器配置为组装的制冷单元的物理特性。 可编程标头在出厂时通过选择性地打破跳线来开发二进制代码进行编程。 用于附件设备的微处理器的编程可由现场维修人员通过使用小型DIP开关来开发微处理器的二进制码来执行。

    High-low superheat protection for a refrigeration system compressor
    6.
    发明授权
    High-low superheat protection for a refrigeration system compressor 失效
    制冷系统压缩机的高低过热保护

    公开(公告)号:US4527399A

    公开(公告)日:1985-07-09

    申请号:US597340

    申请日:1984-04-06

    申请人: Richard G. Lord

    发明人: Richard G. Lord

    IPC分类号: F25B1/00 F25B41/00 F25B41/06

    摘要: A method and control system are disclosed for operating a refrigeration system to protect the refrigeration system compressor from adverse operating conditions. A first signal indicative of the saturation temperature of the refrigerant in an evaporator of the refrigeration system, and a second signal indicative of the temperature of gaseous refrigerant flowing from the evaporator to the compressor of the refrigeration system compressor, are provided to a microcomputer system which processes the first and second signals to determine the superheat of the gaseous refrigerant flowing to the compressor. The microcomputer system generates an alarm signal to shut down operation of the refrigeration system if the detected superheat is less than a lower limit or greater than an upper limit of a normal range of superheat values.

    摘要翻译: 公开了一种用于操作制冷系统以保护制冷系统压缩机免受不利操作条件的方法和控制系统。 指示制冷系统的蒸发器中的制冷剂的饱和温度的第一信号和表示从制冷剂系统压缩机的蒸发器流向压缩机的气态制冷剂的温度的第二信号被提供给微机系统 处理第一和第二信号以确定流到压缩机的气态制冷剂的过热。 如果检测到的过热度小于下限或大于过热值的正常范围的上限,则微机系统产生报警信号,以关闭制冷系统的运行。

    Method and apparatus for controlling a refrigerant expansion valve in a
refrigeration system
    7.
    发明授权
    Method and apparatus for controlling a refrigerant expansion valve in a refrigeration system 失效
    用于控制制冷系统中的制冷剂膨胀阀的方法和装置

    公开(公告)号:US4523435A

    公开(公告)日:1985-06-18

    申请号:US562896

    申请日:1983-12-19

    申请人: Richard G. Lord

    发明人: Richard G. Lord

    摘要: A refrigeration system is disclosed which may have multiple compression and condenser stages, in which an electronic refrigerant expansion valve is controlled by the digital output of a microcomputer which adjust the expansion valve in response to a valve change signal which is a function of a fraction of the deviation of the sensed refrigerant superheat from a desired superheat added to a multiple of the computed rate of change of the refrigerant superheat.

    摘要翻译: 公开了一种可以具有多个压缩和冷凝器级的制冷系统,其中电子制冷剂膨胀阀由微型计算机的数字输出控制,该微型计算机的数字输出响应于阀变化信号来调节膨胀阀,该阀变化信号是 感测到的制冷剂过热器与所需过热器的偏差相加到制冷剂过热度的计算出的变化率的倍数。

    Dual pump down cycle for protecting a compressor in a refrigeration
system
    10.
    发明授权
    Dual pump down cycle for protecting a compressor in a refrigeration system 失效
    用于保护制冷系统中压缩机的双抽油循环

    公开(公告)号:US4549404A

    公开(公告)日:1985-10-29

    申请号:US597947

    申请日:1984-04-09

    申请人: Richard G. Lord

    发明人: Richard G. Lord

    摘要: A method and control system are disclosed for operating a refrigeration system to protect the refrigeration system compressor from flooding at startup of the refrigeration system. When the refrigeration system is to be shut down, refrigerant flow from a condenser to an evaporator of the refrigeration system is effectively closed off and the refrigeration system compressor is run for a first preselected time period sufficient to reduce the refrigerant pressure in the evaporator to a first desired, relatively low level. Then, prior to restarting the refrigeration system, the compressor is again run with the refrigerant flow from the condenser to the evaporator closed off to pump refrigerant out of the evaporator to reduce the refrigerant pressure in the evaporator to a second desired, relatively low level.This dual pump down cycle ensures that no liquid refrigerant from the evaporator will enter the compressor when the refrigeration system is restarted.

    摘要翻译: 公开了一种用于操作制冷系统以在制冷系统启动时保护制冷系统压缩机免于淹没的方法和控制系统。 当制冷系统关闭时,制冷剂从冷凝器到蒸发器的制冷剂流动被有效地封闭,并且制冷系统压缩机运行第一预选时间段,足以将蒸发器中的制冷剂压力降低到 首先要求相对较低的水平。 然后,在重新启动制冷系统之前,压缩机再次运行,从冷凝器到蒸发器的制冷剂流动器关闭,以将制冷剂从蒸发器中排出,以将蒸发器中的制冷剂压力降低到第二所需的相对低的水平。 这种双重抽气循环确保当制冷系统重新启动时,来自蒸发器的液体制冷剂不会进入压缩机。