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    Vacuum pumps
    121.
    发明申请
    Vacuum pumps 有权
    真空泵

    公开(公告)号：US20010024620A1

    公开(公告)日：2001-09-27

    申请号：US09740085

    申请日：2000-12-19

    Inventor： Michael Henry North

    IPC: F04C018/16

    CPC classification number: F04C18/084 ,  F04C18/16 ,  F04C2220/12 ,  F04C2250/201

    Abstract: A vacuum pump having a screw mechanism and comprising two externally threaded rotors mounted on respective shafts in a pump body and adapted for counter-rotation therein with intermeshing of the rotor threads with close tolerances between the threads and internal surfaces of the pump body in order that gas may be pumped from a pump inlet to a pump outlet by action of the rotor threads, the root diameter of each rotor increases and the thread diameter of each rotor decreases in a direction from the pump inlet to the pump outlet, and wherein the pitch of the rotor threads decreases in a direction from the pump inlet to the pump outlet.

    Abstract translation: 一种真空泵，其具有螺旋机构并且包括两个外螺纹转子，其安装在泵体中的相应轴上并且适于在其中反向旋转，其中转子螺纹与螺纹和泵体的内表面之间的紧公差相互啮合，以便 气体可以通过转子螺纹的作用从泵入口泵送到泵出口，每个转子的根直径增加，并且每个转子的螺纹直径在从泵入口到泵出口的方向上减小，并且其中间距 的转子螺纹在从泵入口到泵出口的方向上减小。

    Vacuum pumps
    122.
    发明授权
    Vacuum pumps 有权
    真空泵

    公开(公告)号：US06200116B1

    公开(公告)日：2001-03-13

    申请号：US09334236

    申请日：1999-06-16

    Applicant: Nigel Paul Schofield ,  Michael Henry North

    Inventor： Nigel Paul Schofield ,  Michael Henry North

    IPC: F01C124

    CPC classification number: F01C21/02 ,  F04C18/084 ,  F04C18/16 ,  F04C29/0078 ,  F04C2240/50 ,  F04C2250/201

    Abstract: A vacuum pump incorporating a screw mechanism section and comprising two externally threaded rotors mounted on respective shafts in a pump body. The externally threaded rotors are adapted for counter-rotation in a first chamber within the pump body with intermeshing of the rotor threads in order to pump gas from a pump inlet by action of the rotors. The root diameter of each rotor increases and the thread diameter of each rotor decreases in a direction from pump inlet and in which the gas is pumped. The two externally threaded rotors are positioned in the pump body by means of shaft bearings located inside cavities in the rotors. The cavities are sealed at the ends closest to the pump inlet.

    Abstract translation: 一种包括螺旋机构部分的真空泵，包括安装在泵体内的相应轴上的两个外螺纹转子。 外螺纹转子适于在泵主体内的第一室中进行反向转动，其中转子螺纹相互啮合，以便通过转子的作用从泵入口泵送气体。 每个转子的根直径增加，并且每个转子的螺纹直径在从泵入口的方向上减小，并且其中泵送气体。 两个外螺纹转子通过位于转子内腔内的轴承座定位在泵体内。 空腔在最靠近泵入口的端部密封。

    Fluid rotary apparatus having tapered rotors
    123.
    发明授权
    Fluid rotary apparatus having tapered rotors 失效
    具有锥形转子的流体旋转装置

    公开(公告)号：US5533887A

    公开(公告)日：1996-07-09

    申请号：US233273

    申请日：1994-04-26

    Applicant: Teruo Maruyama ,  Yoshikazu Abe

    Inventor： Teruo Maruyama ,  Yoshikazu Abe

    IPC: F04C18/08 ,  F04C18/16 ,  F04C25/02 ,  F04C27/00 ,  F04C29/00 ,  F04C29/06 ,  H01L21/302 ,  H01L21/3065 ,  F01C1/16

    CPC classification number: F04C18/086 ,  F04C18/084 ,  F04C18/16 ,  F04C27/004 ,  F04C2250/201

    Abstract: A fluid rotary apparatus includes a casing, a plurality of screw rotors, and a driving device. The casing has a suction hole, a discharging hole, and an inner tapered surface. The rotors have thread grooves and are rotatably supported within the casing to be rotated synchronously in mesh with each other. An outer peripheral surface of each rotor has a flat surface approaching or sliding in contact with the inner tapered surface of the casing. The driving device rotates the rotors. Fluid is drawn through the suction hole, compressed, and discharged through the discharging hole by utilization of a change of a volume of a space defined by the plurality of screw rotors and the casing. A band-like chip seal is provided at the flat surface of each rotor. The chip seal has dynamic pressure notches at it surface to produce dynamic pressure from viscous fluid.

    Abstract translation: 流体旋转装置包括壳体，多个螺杆转子和驱动装置。 壳体具有抽吸孔，排出孔和内锥形表面。 转子具有螺纹槽并且可旋转地支撑在壳体内以彼此啮合同步地旋转。 每个转子的外周表面具有与壳体的内锥形表面接近或滑动接触的平坦表面。 驱动装置旋转转子。 流体通过抽吸孔被抽吸，通过利用由多个螺杆转子和壳体限定的空间的体积的变化而通过排出孔被压缩和排出。 在每个转子的平坦表面上设置带状的密封件。 芯片密封件在其表面具有动态压力缺口，以产生来自粘性流体的动态压力。

    EXZENTERSCHNECKENPUMPE
    129.
    发明公开
    EXZENTERSCHNECKENPUMPE 审中-公开
    螺杆泵

    公开(公告)号：EP2404061A2

    公开(公告)日：2012-01-11

    申请号：EP10711641.0

    申请日：2010-03-02

    Applicant: Daunheimer, Ralf

    Inventor： Daunheimer, Ralf

    IPC: F04C2/107

    CPC classification number: F04C2/1071 ,  F04C2230/91 ,  F04C2240/10 ,  F04C2240/20 ,  F04C2250/201

    Abstract: The invention relates to an eccentric screw pump (100), in particular for conveying viscous, highly viscous and abrasive media, having a longitudinal direction L, having a conical, helically wound, at least single-start rotor (1) having a gradient h, having at least one eccentricity (e
    1 , e
    2 , e
    3 ,…e
    n ) and at least one cross-section d that is rotatably arranged in a single or multi-start conical stator (2) wherein a plurality of chambers (3, 4, 5…n) each having a volume (V
    3 , V
    4 , V
    5 …V
    n ) is formed between the rotor (1) and stator (2) that serve to convey the medium and wherein the chambers (3, 4, 5…n) between the stator and the rotor are limited by a sealing line D. The volumes (V
    3 , V
    4 , V
    5 …V
    n ) of each individual chamber (3, 4, 5…n) between the stator (2) and the rotor (1) are equal.

    GEROTOR TYPE MACHINE
    130.
    发明授权
    GEROTOR TYPE MACHINE 有权
    摆线机

    公开(公告)号：EP1503034B1

    公开(公告)日：2011-08-31

    申请号：EP03725936.3

    申请日：2003-04-22

    Applicant: Davydov, Vladimir Vsevolodovich

    Inventor： Davydov, Vladimir Vsevolodovich

    IPC: F01C1/07

    CPC classification number: F04C2/107 ,  F01C21/102 ,  F04C2250/201

    Abstract: The invention relates to hydro and pneumatic engineering and can be used as a pump, a compressor or a motor. The inventive gerotor type machine for displacing liquids and gases along the longitudinal axis thereof comprises a stator, a screw rotor and a shell. The rotor is arranged in the shell in such a way that working chambers are formed between the mating surfaces thereof. The shell is disposed inside the stator in such a way that it is rotatable and that working chambers are formed between the mating surfaces thereof. The passage area between the rotor and shell and between the shell and stator is embodied in such a way that it is variable along the longitudinal axis of the machine. Said rotor and shell are embodied in such a way that they are displaceable by an axial force for tightening the rotor, shell and stator to each other, thereby automatically taking up clearances when they are formed. The inventive gerotor type machine makes it possible to automatically compensate the clearances formed between the rotor and shell and between the shell and stator.

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