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    PNEUMATICALLY ACTUATED VACUUM PUMP HAVING MULTIPLE VENTURI GAPS AND CHECK VALVES
    1.
    发明公开
    PNEUMATICALLY ACTUATED VACUUM PUMP HAVING MULTIPLE VENTURI GAPS AND CHECK VALVES 审中-公开
    气动真空泵，具有多个排气口和止回阀

    公开(公告)号：EP3177390A1

    公开(公告)日：2017-06-14

    申请号：EP15830300.8

    申请日：2015-08-06

    申请人： Dayco IP Holdings, LLC

    发明人： FLETCHER, David E. ,  GRAICHEN, Brian M. ,  HAMPTON, Keith

    IPC分类号： B01F5/04 ,  B60T13/62 ,  F16K3/32 ,  F16K3/24 ,  F16K15/18 ,  F02M19/08

    CPC分类号： F04F5/20 ,  F02B37/04 ,  F02B37/164 ,  F02M35/02 ,  F02M35/10118 ,  F02M35/10229 ,  F02M35/10255 ,  F02M35/104 ,  F04F5/22 ,  F04F5/44 ,  F04F5/467 ,  Y02T10/144

    摘要： A pneumatically actuated vacuum pump is disclosed, and includes a body defining a converging motive section, a diverging discharge section, at least one suction port, and a Venturi gap. The Venturi gap is located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. The pneumatically actuated vacuum pump also includes a first check valve fluidly connected to the Venturi gap and the suction port. The pneumatically actuated vacuum pump further includes at least one second gap located in the diverging discharge section of the body downstream of the Venturi gap. A second check valve is fluidly connected to the second gap.

    摘要翻译： 公开了一种气动致动真空泵，其包括限定会聚动力部分，分支排出部分，至少一个吸入端口和文丘里间隙的主体。 文氏管间隙位于会聚运动部分的出口端和分叉排出部分的入口端之间。 气动致动真空泵还包括流体地连接到文丘里间隙和抽吸端口的第一止回阀。 气动致动真空泵还包括至少一个第二间隙，其位于文丘里间隙下游的主体的分流排出部分中。 第二止回阀流体连接到第二间隙。

    Vacuum generating device
    4.
    发明公开
    Vacuum generating device 审中-公开
    真空发生装置

    公开(公告)号：EP1302671A1

    公开(公告)日：2003-04-16

    申请号：EP02257134.3

    申请日：2002-10-15

    申请人： Korea Pneumatic System Co., Ltd

    发明人： Cho, Ho-Young

    IPC分类号： F04F5/22 ,  F04F5/00 ,  F04F5/44

    CPC分类号： F04F5/44 ,  F04F5/22 ,  F04F5/466 ,  F04F5/467

    摘要： A vacuum generating device designed to generate negative pressure in an absorption means, such as an absorption pad, of a vacuum system, is disclosed. The vacuum generating device accomplishes the recent trend of compactness and smallness of such devices, effectively protects its ejector unit from damage, and does not have an increased production cost in comparison with conventional vacuum generating devices. The vacuum generating device includes a block body having an air inlet port, a vacuum port, and an air outlet port, an ejector unit functioning to generate negative pressure in response to an action of compressed air flowing thereto via the air inlet port, and a control valve mechanism functioning to open or close air supply paths branching from a main flow path to an air inlet chamber of the ejector unit and the vacuum port. The block body has a recess, formed by depressing a surface of the block body to a predetermined depth. The ejector unit is formed in the recess by depressing predetermined portions of the recess. A cover is set in the recess of the block body to seal the ejector unit from the outside.

    摘要翻译： 公开了一种真空发生装置，其被设计为在真空系统的吸收装置例如吸收垫中产生负压。 真空发生装置实现了近来的这种装置的紧凑性和小型化的趋势，有效地保护了其顶出装置免受损坏，并且与传统的真空发生装置相比没有增加生产成本。 该真空发生装置包括：具有吸气口，真空口和排气口的块体;起作用以响应经由吸气口流入的压缩空气的作用产生负压的喷射器单元;以及 控制阀机构，用于打开或关闭从主流路分支到喷射器单元和真空口的空气入口室的空气供应路径。 块体具有通过将块体的表面下压至预定深度而形成的凹部。 通过压下凹槽的预定部分，顶出器单元形成在凹槽中。 盖体设置在块体的凹槽中以从外部密封顶出单元。

    ÜBERSCHALLVORRICHTUNG
    5.
    发明授权
    ÜBERSCHALLVORRICHTUNG 失效
    超音速DEVICE

    公开(公告)号：EP0793780B1

    公开(公告)日：1999-10-20

    申请号：EP95929721.9

    申请日：1995-08-18

    申请人： MANNESMANN Aktiengesellschaft

    发明人： BEYLICH, Alfred, E.

    IPC分类号： F04F5/22

    CPC分类号： F04F5/22

    摘要： The invention concerne a supersonic jet-nozzle device with an elongated tubular mixer/diffuser housing in which are disposed lontitudinally a first jet nozzle and, in series with it, a second jet nozzle fitted with a displacement body. In order, with a simple design, to improve significantly the performance in relation to the propellant used, the invention proposes that both jet nozzles (11, 12) are located in a cylindrical section (21, 22) of the mixer/diffuser housing (20), that the section (21) of the housing enclosing the first jet nozzle (11) is adjacent to a conically tapering section (23) of the housing enclosing a first mixing zone, and that the displacement body (14) attached to the second jet nozzle projects into this conical section (23).

    MEHRSTUFIGE EJEKTORPUMPE
    7.
    发明公开
    MEHRSTUFIGE EJEKTORPUMPE 失效
    多级喷射器。

    公开(公告)号：EP0654125A1

    公开(公告)日：1995-05-24

    申请号：EP93917751.0

    申请日：1993-08-05

    申请人： Volkmann, Thilo

    发明人： Volkmann, Thilo

    IPC分类号： F04F5

    CPC分类号： F04F5/22 ,  F04F5/16

    摘要： A multistage ejector pump has a ring-shaped flow channel (22) designed for an outwardly directed throughflow in the radial direction. In at least one of the two opposite approximately disk-shaped or annular disk-shaped wall parts mutually spaced apart by an axial gap are provided mutually concentric passageways (22D) for the fluid substance which communicate with a suction chamber (15 to 18). The concentric parts of the wall located between the passageways form an ejector disk (1), as well as ejector rings (2 to 5), whose cross-sectional shapes and surface profiles are adaptable to obtain favorable flow conditions in the flow channel for each pumping operation. Additional flow guiding profiles (37 to 40) inserted into the flow channel (22) and consisting of one or several adjacent and/or successive profiles reduce on the one hand the turbulence resulting from the mixture of the substance to be conveyed with the pump fluid and consequent damages to subsequent pump stages, and on the other hand reduce the residual energy of the pump fluid.