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    ZAHNRADMASCHINE MIT KLEINEM DURCHMESSER-LÄNGENVERHÄLTNIS
    42.
    发明公开
    ZAHNRADMASCHINE MIT KLEINEM DURCHMESSER-LÄNGENVERHÄLTNIS 有权
    小直径的大小关系齿机

    公开(公告)号：EP2655802A2

    公开(公告)日：2013-10-30

    申请号：EP11773012.7

    申请日：2011-10-24

    Applicant: Robert Bosch GmbH

    Inventor： KUNATH, Sando ,  LAFORSCH, Oliver ,  AMESOEDER, Dieter ,  NOWITZKY, Ingo ,  KACMAR, Marian ,  SKRYNSKI, Evgenij

    IPC: F01C3/08

    CPC classification number: F01C3/08 ,  F01C11/002 ,  F04C2250/201

    Abstract: The invention relates to a rotary piston machine which operates as a pump, a compressor, or a motor and which has a rotor (2) and a counter rotor (4), said counter rotor (4) being disposed opposite the rotor (2). The rotor (2) has a first end surface (6) with a first toothing system (8). The counter rotor (4) has a second end surface (16) with a second toothing system (18). The first toothing system (8) is made of at least one first tooth (10) and a first tooth space (12). The second toothing system (18) is made of at least one second tooth (20) and a second tooth space (22) with a second tooth base (24). The toothing systems (8, 18) are in engagement with each other such that first working chambers (28) are formed by means of the meshing of the first teeth (10) of the first toothing system (8) and the second teeth (20) of the second toothing system (18), wherein volumes that are formed by the first working chambers (28) are changed by means of the meshing of the teeth (10, 20). The rotor (2) has a first rotational axis (I), and the counter rotor (4) has a second rotational axis (II). The first rotational axis (I) and the second rotational axis (II) enclose a first angle (f) that is not equal to 0°. A second extension (26) of a second surface line of the second tooth base (24), the first rotational axis (I), and the second rotational axis (II) intersect at a common central point (M). According to the invention, a second angle (ß) that is enclosed between the second extension (26) and the second rotational axis (II) is smaller than 45°.

    Vacuum pump
    43.
    发明公开
    Vacuum pump 有权
    真空泵

    公开(公告)号：EP0965758A3

    公开(公告)日：2001-01-31

    申请号：EP99304669.7

    申请日：1999-06-15

    Applicant: The BOC Group plc

    Inventor： Schofield, Nigel Paul ,  North, Michael Henry

    IPC: F04C23/00 ,  F04C18/16 ,  F04C18/12 ,  F04C25/02

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

    Abstract: A compound vacuum pump incorporating a screw mechanism section and comprising two externally threaded rotors mounted on respective shafts in a pump body and adapted for counter-rotation in a first chamber within the pump body with intermeshing of the rotor threads and with close tolerances between the threads and first internal chamber surfaces in order to pump gas from a pump inlet to a pump outlet by action of the rotors, wherein the root diameter of each rotor increases and the thread diameter of each rotor decreases in a direction from pump inlet to pump outlet, and wherein the pump additionally includes a Roots mechanism section comprising two Roots-type profile rotors also mounted on the respective shafts and adapted for counter-rotation in a second chamber within the pump body situated at the inlet end of the pump.

    ROTARY POSITIVE DISPLACEMENT MACHINE FOR A COMPRESSIBLE WORKING FLUID
    44.
    发明公开
    ROTARY POSITIVE DISPLACEMENT MACHINE FOR A COMPRESSIBLE WORKING FLUID 失效
    用于可压缩工作流体的旋转正位移机

    公开(公告)号：EP0302877A1

    公开(公告)日：1989-02-15

    申请号：EP87902836.0

    申请日：1987-04-21

    Applicant: SVENSKA ROTOR MASKINER AB

    Inventor： OLOFSSON, Hans

    IPC: F04C ,  F04C18 ,  F01C1

    CPC classification number: F01C1/107 ,  F04C2250/201

    Abstract: Machine à déplacement positif rotatif pour un fluide de travail compressible, comportant deux éléments coniques (26, 28) qui s'engrènent intérieurement, et qui sont dotés d'axes excentriques (48, 50). Les éléments (26, 28) sont munis de rainures en spirale (34, 38) et de parties intermédiaires pleines (36, 40) qui coopèrent pour créer des chambres fermées (66) de volume variable, tout en se déplaçant axialement d'une extrémité à l'autre. L'élément intérieur (28) possède un mouvement hypocyclique par rapport à l'élément extérieur (26). La profondeur radiale des rainures (34, 38) varie axialement le long des éléments (26, 28) et dans chaque plan transversal est égale à deux fois l'excentricité des axes (48, 50) des éléments (26, 28), et l'angle du pas de la spirale au niveau du cône de pas varie en continu dans le sens axial.

    Abstract translation: 用于可压缩工作流体的旋转容积式机器，具有两个内部相互啮合并且设有偏心轴（48,50）的锥形元件（26,28）。 元件（26,28）设置有螺旋槽（34,38）和实心中间部分（36,40），所述实心中间部分（36,40）协同工作以产生可变容积的封闭室（66），同时沿轴向 结束到另一个。 内部构件（28）相对于外部构件（26）具有轻微的运动。 凹槽（34,38）的径向深度沿着元件（26,28）轴向地变化并且在每个横向平面中是元件（26,28）的轴线（48,50）的偏心率的两倍，并且 螺距在锥体处的螺旋角在轴向方向上连续变化。

    COMPLEX SCREW ROTORS
    46.
    发明公开
    COMPLEX SCREW ROTORS 审中-公开

    公开(公告)号：EP3368771A1

    公开(公告)日：2018-09-05

    申请号：EP16794865.2

    申请日：2016-10-29

    Applicant: Gardner Denver Inc.

    Inventor： GRAY, Luke ,  STRATMAN, Taylor ,  CONLEY, Bernard ,  RANSDELL, Brent ,  PEANA, Daniel

    IPC: F04C18/08 ,  B23F15/08 ,  F04C18/16

    CPC classification number: F04C18/084 ,  F04C18/088 ,  F04C18/16 ,  F04C18/20 ,  F04C2240/20 ,  F04C2250/201

    Abstract: A compressor design includes a male rotor (10) having one or more helical lobes (12) and a female rotor (14) having one or more helical grooves (16). The male rotor is mounted on a first shaft and the female rotor is mounted on a second shaft. The male rotor is positioned in a first section of a chamber and the female rotor is positioned in a second section of the chamber. Fluid enters the chamber at an inlet, and when the rotors are driven, the lobes of the male rotor fit into the grooves of the female rotor, causing compression and movement of the fluid towards an outlet or discharge end where the compressed fluid is discharged. The configuration of the lobe and groove helix, the lobe and groove profile, and the outer diameter of the rotors can be varied in different combinations to form different rotors.

    PUMP WITH A RESILIENT SEAL
    47.
    发明公开
    PUMP WITH A RESILIENT SEAL 审中-公开
    PUMPE MIT NACHGIEBIGER DICHTUNG

    公开(公告)号：EP2422048A2

    公开(公告)日：2012-02-29

    申请号：EP10719766.7

    申请日：2010-04-21

    Applicant: PDD Innovations Limited

    Inventor： HAYES-PANKHURST, Richard, Paul ,  ROSS, Peter, William

    IPC: F01C5/04 ,  F01C19/00 ,  F04C15/00 ,  F04C5/00

    CPC classification number: F04C15/00 ,  F01C5/04 ,  F01C19/005 ,  F04C2/22 ,  F04C5/00 ,  F04C15/0015 ,  F04C2240/30 ,  F04C2250/201

    Abstract: A pump comprises a housing (10, 210, 300, 410), the housing having an interior defining a rotor path (10, 210, 300, 410), an inlet (111, 211) formed in the housing (10, 210, 300, 410) at a first position on said rotor path, an outlet (12, 212) formed in the housing (10, 210, 300, 410) at a second position on said rotor path spaced from said first position. A rotor (15, 315, 350, 415) is rotatable in the housing. At least one first surface is formed on the rotor (15, 315, 350, 415) and seals against said rotor path of the housing (10, 210, 300, 410). At least one second surface is formed on said rotor (15, 315, 350, 415) circumferentially spaced from said first surface and forms a chamber with the rotor path that travels around said rotor path on rotation of the rotor (15, 315 350, 415) to convey fluid around the housing (10, 210, 300, 410) from the inlet (111, 211) to the outlet (12, 212). A resilient seal (114, 214) is formed in one piece with the housing (10, 210, 300, 410), located on said rotor path and so extends between the outlet (12, 212) and the inlet (111, 211) in the direction of rotation of said rotor (15, 315, 350, 415) that the first rotor surface seals with, and resiliently deforms, the seal (114, 214), as the rotor (15, 315, 350, 415) rotates around the rotor path within the housing to prevent fluid flow from said outlet (12, 212) to said inlet (111, 211) past the seal. A passage (101, 201) may be provided to supply fluid to an under surface of the seal (114, 214) at a pressure that acts to urge the seal (114, 214) against the rotor (15, 315, 350, 415). The rotor path may be frustoconical with the first surface of the rotor (15, 315, 350, 415) also being frustoconical and being a mating fit with the rotor path.

    Abstract translation: 泵包括壳体，其具有限定转子路径的内部，在所述壳体中在所述转子路径上的第一位置处形成的入口，在所述转子路径上与所述第一位置间隔开的第二位置处形成在所述壳体中的出口。 转子可在壳体中旋转，其中第一表面与壳体密封。 第二表面形成在所述转子上周向间隔开所述第一表面并且形成围绕所述转子路径行进的腔室，以将流体从入口传送到出口。 与壳体形成的弹性密封件位于转子路径上，以防止流体从所述出口流到所述入口经过密封件。 可以提供通道以将流体以用于将密封件推靠在转子上的压力提供给密封件的下表面。

    GEROTOR TYPE MACHINE
    48.
    发明公开
    GEROTOR TYPE MACHINE 有权
    摆线机

    公开(公告)号：EP1503034A4

    公开(公告)日：2008-03-19

    申请号：EP03725936

    申请日：2003-04-22

    Applicant: DAVYDOV VLADIMIR VSEVOLODOVICH

    Inventor： DAVYDOV VLADIMIR VSEVOLODOVICH

    IPC: F01C1/107 ,  F01C21/10 ,  F04C2/10 ,  F04C2/107 ,  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.

    Screw vacuum pump
    50.
    发明公开
    Screw vacuum pump 审中-公开
    Schraubenkolben-Vakuumpumpe

    公开(公告)号：EP1111243A2

    公开(公告)日：2001-06-27

    申请号：EP00311163.0

    申请日：2000-12-14

    Applicant: The BOC Group plc

    Inventor： North, Michael Henry

    IPC: F04C18/16

    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。

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