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48 条记录 (耗时 0.013 秒)

    Control means for a variable capacity rotary screw compressor
    1.
    发明授权
    Control means for a variable capacity rotary screw compressor 失效
    可变容量旋转螺杆压缩机的控制手段

    公开(公告)号：US3924972A

    公开(公告)日：1975-12-09

    申请号：US51826774

    申请日：1974-10-29

    申请人： VILTER MANUFACTURING CORP

    发明人： SZYMASZEK PAUL G

    IPC分类号： F04B49/00 ,  F04B49/06 ,  F04C28/12

    CPC分类号： F04C28/125 ,  F04B49/002 ,  F04B49/06

    摘要： A variable capacity rotary screw compressor has a pair of helical rotors mounted within a housing for compressing fluid and an axially movable slide valve in the housing to control the capacity of the compressor. Control means are provided for moving the slide valve to regulate or adjust compressor capacity and comprise an hydraulic actuator including a movable piston connected to the slide valve and a pair of solenoid valves for controlling hydraulic fluid flow between a pump and the actuator to effect piston and slide valve movement. The control means also comprises a bridge balancing relay which receives input control signals from either an automatic control unit or a manually operable control unit and compares the control signals with feedback signals indicative of valve spool position and provides output signals for operating the solenoid valves accordingly. The automatic control unit provides a control signal indicative, for example, of a system condition to operate the compressor at a capacity necessary to maintain the system condition constant. The manual control unit provides a control signal to move the slide valve to a desired fixed position and to maintain the slide valve in that position. The feedback signal is indicative of slide valve position and is compared in the bridge balancing relay with the control signal from either the automatic or manual control units, whichever is operating, to effect proper positioning of the slide valve.

    Two-stage refrigeration system having crankcase pressure regulation in high stage compressor
    2.
    发明授权
    Two-stage refrigeration system having crankcase pressure regulation in high stage compressor 失效
    两级制冷系统在高压压缩机中的起动压力调节

    公开(公告)号：US3719057A

    公开(公告)日：1973-03-06

    申请号：US3719057D

    申请日：1971-10-08

    申请人： VILTER MANUFACTURING CORP

    发明人： GRANT W

    IPC分类号： F04B41/06 ,  F04B49/00 ,  F25B1/10 ,  F25B31/00

    CPC分类号： F25B1/10

    摘要： A two-stage refrigeration system including a condensor, a receiver, an evaporator, a low-stage dry-wall compressor and a high-stage dry-wall compressor, the low-stage compressor including an oil-draining assembly for automatically draining oil from the suction chamber to the crankcase chamber, and a pressure-equalizing connection between the suction chamber and the crankcase chamber, the high-stage compressor having an oildraining assembly for automatically draining oil from the highstage suction chamber to the high-stage crankcase chamber, and a pressure connection between the high-stage crankcase chamber and the low-stage crankcase chamber; and a pressure-responsive regulating valve interposed in the connection between the highstage crankcase chamber and the low-stage crankcase chamber, the pressure-responsive valve being connected to respond to the highstage suction chamber pressure to maintain a predetermined pressure differential of one pound per square inch between the high-stage suction chamber and the high-stage crankcase chamber.

    摘要翻译： 一种包括冷凝器，接收器，蒸发器，低级干壁压缩机和高级干壁压缩机的两级制冷系统，该低级压缩机包括用于自动排出油的排油组件 吸入室到曲轴箱室，以及吸入室和曲轴箱室之间的压力平衡连接，高级压缩机具有排油组件，用于将油从高级吸入室自动排出到高阶段 曲轴箱室和高级曲轴箱室与低级曲轴箱室之间的压力连接; 以及插入在高级曲轴箱室和低级曲轴箱室之间的连接中的压力响应性调节阀，压力响应阀被连接以响应于高级吸入室压力，以保持预定的压力差 高阶抽吸室和高级曲轴箱室之间每平方英寸1磅。

    Gauge mounting
    8.
    发明授权
    Gauge mounting 失效
    量规安装

    公开(公告)号：US3915008A

    公开(公告)日：1975-10-28

    申请号：US49201774

    申请日：1974-07-26

    申请人： VILTER MANUFACTURING CORP

    发明人： SILVERMAN ALBERT A ,  KOCHER ERICH J

    IPC分类号： G01L19/06 ,  G01L7/00

    CPC分类号： G01L19/0609

    摘要： A mounting for a pressure indicating gauge in which gas pressure pulsations from a source of gas pressure are absorbed by a helical tubular spring conveying the pressurized gas serially to a chamber at one side of a diffusion plate through which the gases are delivered to break up into separate pressure waves. The gases enter a cavity at the opposite side of the diffusion plate and pass to the gauge which mechanically moves an indicator which is further dampened to avoid residual pressure pulsations. The mounting serves also to absorb vibrations which cause erratic oscillation of the gauge indicating pointer and also serves to isolate the gauge from shocks. The mounting further includes a soft, rubber-like sleeve which engages the outer surfaces of the tubular spring to dampen its vertical movement and prevent swaying of the gauge relative to the structure on which it is mounted. The gauge mounting further includes a ballast member to lower the center of gravity of the suspended mass and may employ an auxiliary spring to support heavier gauges.

    摘要翻译： 用于压力指示表的安装件，其中来自气体压力源的气体压力脉动被螺旋管状弹簧吸收，所述螺旋管状弹簧将加压气体串联地输送到扩散板的一侧的腔室，通过该腔室输送气体以分解成 单独的压力波。 气体进入扩散板相对侧的空腔，并通过机械移动指示器的量规，进一步减振，以避免残余压力脉动。 该安装还用于吸收引起指示指示器不稳定振动的振动，并且还用于将测量计与冲击隔离。 安装件还包括柔软的橡胶状套筒，其与管状弹簧的外表面接合以阻尼其垂直运动，并防止仪表相对于其上安装的结构摇摆。 量规安装还包括用于降低悬挂质量的重心的压载构件，并且可以使用辅助弹簧来支撑较重的压力表。

    Variable capacity rotary screw compressor having variable high pressure suction fluid inlets
    9.
    发明授权
    Variable capacity rotary screw compressor having variable high pressure suction fluid inlets 失效
    具有可变高压抽吸流体入口的可变容量旋转螺杆式压缩机

    公开(公告)号：US3869227A

    公开(公告)日：1975-03-04

    申请号：US44926374

    申请日：1974-03-08

    申请人： VILTER MANUFACTURING CORP

    发明人： KOCHER ERICH J ,  GRANT WHITNEY I

    IPC分类号： F01C1/16 ,  F04C28/12 ,  F04C28/24

    CPC分类号： F04C28/125 ,  F04C28/24

    摘要： A variable capacity multiple inlet rotary screw compressor having a pair of helical rotors mounted within a housing for compressing fluid drawn from a low pressure suction fluid chamber and a high pressure suction fluid chamber and discharging to a discharge chamber. A slide valve is provided in the housing to control the capacity of the compressor by changing the point of low pressure suction fluid cut off to the rotors. The point of high pressure suction fluid admission being changed in synchronism with the movement of the slide valve to connect the working chambers of the rotors to the high pressure fluid suction fluid chamber simultaneously with or just after low pressure suction fluid cut off.

    摘要翻译： 一种可变容量多入口旋转螺杆式压缩机，其具有安装在壳体内的一对螺旋转子，用于压缩从低压抽吸流体室和高压抽吸流体室抽取的流体并排放到排放室。 滑阀设置在壳体中，以通过改变切断到转子的低压抽吸流体的点来控制压缩机的容量。 高压吸入流体入口的点与滑阀的运动同步地改变，以在低压抽吸流体切断之后或之后将转子的工作室连接到高压流体抽吸流体室。

    Refrigerant cooled oil system for a rotary screw compressor
    10.
    发明授权
    Refrigerant cooled oil system for a rotary screw compressor 失效
    用于旋转螺杆压缩机的制冷冷却油系统

    公开(公告)号：US3710590A

    公开(公告)日：1973-01-16

    申请号：US3710590D

    申请日：1971-07-19

    申请人： VILTER MANUFACTURING CORP

    发明人： KOCHER E

    IPC分类号： F25B1/047 ,  F25B31/00 ,  F25B43/02

    CPC分类号： F25B1/047 ,  F25B31/002

    摘要： A refrigeration system including a positive displacement rotary screw compressor, a condenser, an evaporator, an oil cooler and an oil separator including a sump connected in the compressor discharge line. A pump for circulating oil from the sump through the oil cooler to the compressor and a liquid refrigerant bypass circuit including a pump for supplying liquid refrigerant under pressure in heat exchange relation with the lubricating oil in the oil cooler. The refrigerant discharged from the oil cooler is directed through a desuperheating coil in the oil separator.

    摘要翻译： 一种制冷系统，包括容积式旋转螺杆式压缩机，冷凝器，蒸发器，油冷却器和油分离器，该油分离器包括连接在压缩机排出管线中的贮槽。 一种用于使油从油底壳通过油冷却器循环到压缩机的泵和液体制冷剂旁路回路，包括用于在与油冷却器中的润滑油热交换的压力下供应液体制冷剂的泵。 从油冷却器排出的制冷剂被引导通过油分离器中的过热线圈。