Refrigeration system with load balancing control for at least three
centrifugal compressors
    1.
    发明授权
    Refrigeration system with load balancing control for at least three centrifugal compressors 失效
    至少有三台离心压缩机的负载平衡控制制冷系统

    公开(公告)号:US4248054A

    公开(公告)日:1981-02-03

    申请号:US11987

    申请日:1979-02-14

    摘要: An improved load balancing control circuit for at least three electric motor-driven centrifugal refrigerant compressors comprises a current transformer secondary 90', 91', 92' and a respective load resistor 93', 95', 97' in series to form the legs of a circuit in which the legs are connected in a delta, each leg having a shorting switch 110', 111', 112' connected across it, and a balancing resistance network including balancing resistors 94', 96', 98' are connected in a wye circuit with the delta circuit.

    摘要翻译: 用于至少三个电动机驱动的离心制冷剂压缩机的改进的负载平衡控制电路包括串联的电流互感器次级90',91',92'和相应的负载电阻器93',95',97',以形成 其中腿部以三角形连接的电路,每个腿部具有连接在其上的短路开关110',111',112'以及包括平衡电阻器94',96',98'的平衡电阻网络连接在 带三角形电路的电路。

    Reciprocating serial transparent elastic band ligator
    3.
    发明授权
    Reciprocating serial transparent elastic band ligator 失效
    往复式串联透明弹性带结扎器

    公开(公告)号:US5681328A

    公开(公告)日:1997-10-28

    申请号:US700424

    申请日:1996-11-20

    IPC分类号: A61B17/00 A61B17/12

    摘要: A ligating band dispenser for dispensing a plurality of ligating bands having located at the distal end of an elongated introducer responds to manipulation of an operating structure at the proximal end of the introducer. It has a spring loaded reciprocating inner cylinder movable within a spring loaded, radially expandable cone having inner teeth for engaging a plurality of ligating bands. When the dispenser is actuated, the inner cylinder us drawn proximally with respect to the cone, and the distal end surface of the cone forces the distal-most ring off the reciprocating cylinder and onto the internal tissue has been drawn or place by the inside cylinder.

    摘要翻译: PCT No.PCT / US94 / 14796 Sec。 371日期1996年11月20日 102(e)日期1996年11月20日PCT 1994年12月20日PCT公布。 公开号WO96 / 19145 日期1996年6月27日用于分配位于细长导引器的远端处的多个结扎带的结扎带分配器响应导引器近端处的操作结构的操作。 它具有可弹簧加载的可径向扩张的锥体的弹簧加载的往复运动的内圆柱,其具有用于接合多个结扎带的内齿。 当分配器被致动时,内筒我们相对于锥体向近侧拉伸,并且锥体的远端表面迫使最远端的环离开往复缸,并且在内部组织上已被内筒抽出或放置 。

    HIGH CAPACITY CHILLER COMPRESSOR
    4.
    发明申请
    HIGH CAPACITY CHILLER COMPRESSOR 有权
    高容量冷冻机压缩机

    公开(公告)号:US20090229280A1

    公开(公告)日:2009-09-17

    申请号:US12404040

    申请日:2009-03-13

    IPC分类号: F25B1/00 F25B31/00 F25B41/00

    摘要: A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. A cooling system provides direct, two-phase cooling of the rotor by combining gas refrigerant from the evaporator section with liquid refrigerant from the condenser section to affect a liquid/vapor refrigerant mixture. Cooling of the stator with liquid refrigerant may be provided by a similar technique. A noise suppression system is provided by injecting liquid refrigerant spray at points between the impeller and the condenser section. The liquid refrigerant may be sourced from high pressure liquid refrigerant from the condenser section.

    摘要翻译: 用于大型冷却装置的高效率,低维护性单级或多级离心式压缩机组件。 冷却系统通过将来自蒸发器部分的气体制冷剂与来自冷凝器部分的液体制冷剂组合来影响液体/蒸气制冷剂混合物,从而提供转子的直接两相冷却。 可以通过类似的技术来提供具有液体制冷剂的定子的冷却。 通过在叶轮和冷凝器部分之间的点喷射液体制冷剂喷雾来提供噪声抑制系统。 液体制冷剂可以来自冷凝器部分的高压液体制冷剂。

    Impeller and shaft assembly for high speed gas compressor
    7.
    发明授权
    Impeller and shaft assembly for high speed gas compressor 失效
    用于高速气体压缩机的叶轮和轴组件

    公开(公告)号:US4257744A

    公开(公告)日:1981-03-24

    申请号:US22403

    申请日:1979-03-21

    申请人: Thomas E. Watson

    发明人: Thomas E. Watson

    摘要: An impeller and shaft assembly includes an outwardly tapered socket 38 in the rear face of the impeller 12 and into which a frusto-conically shaped extremity 20 seats, the extremity circumferential wall having a plurality of axially extending grooves 42 alternating with intervening lands 44, the socket and extremity being dimensioned and configured so that in the finally seated relation of the parts the land plastically deforms the socket material which has a lower compressive yield strength than the extremity.

    摘要翻译: 叶轮和轴组件包括在叶轮12的后表面中的向外锥形的插座38,并且截头圆锥形末端20位于该锥形插座38中,所述末端圆周壁具有与中间平台44交替的多个轴向延伸的凹槽42, 插座和末端的尺寸和构造使得在零件的最终安置关系中,地面使具有比末端更低的压缩屈服强度的插座材料塑性变形。

    Method and apparatus for surge detection and control in centrifugal gas
compressors
    8.
    发明授权
    Method and apparatus for surge detection and control in centrifugal gas compressors 失效
    离心式气体压缩机中浪涌检测和控制的方法和装置

    公开(公告)号:US4363596A

    公开(公告)日:1982-12-14

    申请号:US150844

    申请日:1980-05-19

    IPC分类号: F01D17/14 F04D27/02

    CPC分类号: F04D27/0246 F01D17/143

    摘要: A centrifugal gas compressor having a shrouded rotatable impeller 14 in an impeller chamber 40, and provided with capacity control vanes 30 and a diffuser passage 18 throttle plate 38, is provided with surge control means including a thermistor 50 which senses a temperature rise beyond a predetermined value in the impeller chamber and exterior of the gas flow path through the impeller, and through relay means such as 52, 58 electrically connected to the thermistor 50 operates to change the compressor operation to a nonsurging condition.

    摘要翻译: 一种离心式气体压缩机,其具有在叶轮室40中的带盖的可旋转叶轮14,并且设有容量控制叶片30和扩散器通道18节流板38,其具有浪涌控制装置,其包括热敏电阻50,该热敏电阻50感测温度升高超过预定值 通过叶轮的气体流路的叶轮室和外部的值以及通过电连接到热敏电阻50的继电装置例如52,58来操作,以将压缩机的运行改变为非降温状态。

    Method and apparatus for surge detection and control in centrifugal gas
compressors
    9.
    发明授权
    Method and apparatus for surge detection and control in centrifugal gas compressors 失效
    离心式气体压缩机中浪涌检测和控制的方法和装置

    公开(公告)号:US4265589A

    公开(公告)日:1981-05-05

    申请号:US49686

    申请日:1979-06-18

    IPC分类号: F01D17/14 F04D27/02 F01D21/12

    CPC分类号: F04D27/0246 F01D17/143

    摘要: A centrifugal gas compressor having a shrouded rotatable impeller 14 in an impeller chamber 40, and provided with capacity control vanes 30 and a diffuser passage 18 throttle plate 38, is provided with surge control means including a thermistor 50 which senses a temperature rise beyond a predetermined value in the impeller chamber and exterior of the gas flow path through the impeller, and through relay means such as 52, 58 electrically connected to the thermistor 50 operates to change the compressor operation to a nonsurging condition.

    摘要翻译: 一种离心式气体压缩机,其具有在叶轮室40中的带盖的可旋转叶轮14,并且设有容量控制叶片30和扩散器通道18节流板38,其具有浪涌控制装置,其包括热敏电阻50,该热敏电阻50感测温度升高超过预定值 通过叶轮的气体流路的叶轮室和外部的值以及通过电连接到热敏电阻50的继电装置例如52,58来操作,以将压缩机的运行改变为非降温状态。

    Oil separation and return system for centrifugal refrigerant compressors
    10.
    发明授权
    Oil separation and return system for centrifugal refrigerant compressors 失效
    离心制冷压缩机分油回油系统

    公开(公告)号:US4213307A

    公开(公告)日:1980-07-22

    申请号:US960362

    申请日:1978-11-13

    申请人: Thomas E. Watson

    发明人: Thomas E. Watson

    CPC分类号: F04D29/063 F25B31/004

    摘要: A refrigerant system with a high speed centrifugal compressor has an arrangement for promoting the continuous return of oil to gear and bearing housing 12 including a coalescing type filter 62 from which separated oil is passed to a jet pump 74, a thermostatically controlled expansion valve 50 operating at a low superheat value, and inwardly pumping shaft seals 26.

    摘要翻译: 具有高速离心式压缩机的制冷剂系统具有用于促进油连续返回到齿轮和轴承壳体12的装置,所述齿轮和轴承壳体12包括聚结型过滤器62,分离的油从该聚结型过滤器62通过喷射泵74,恒温控制膨胀阀50操作 在低过热值下,并且向内泵送轴密封件26。