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公开(公告)号：EP3271587A1
公开(公告)日：2018-01-24
申请号：EP16768970.2
申请日：2016-03-18
申请人： Ebara Corporation
发明人： GROPPO, Renato , BALBO, Fabio , MATTEAZZI, Mariano , OBUCHI, Masashi , SAKIHAMA, Dai , KUROIWA, So
CPC分类号： F04D29/2266 , F04D1/06 , F04D17/08 , F04D29/30
摘要： An impeller for centrifugal pumps has a first disk element, functionally arranged toward the inlet, which is coaxial to and faces a second disk element, which is functionally arranged toward the delivery and is connected rigidly to the first disk element by virtue of a series of angularly spaced vanes and is provided centrally with a means for fixing to a transmission shaft. The particularity of the present invention resides in that the impeller includes a series of openings formed in the substantially peripheral region of the second disk element, between pairs of adjacent vanes, substantially at the areas subjected to the greatest axial thrust.
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4.发明公开PUMP BLADE FOR SUBMERGED PUMP AND SUBMERGED PUMP HAVING SAME 审中-公开PUMPENKLINGEFÜREINE UNTERWASSERPUMPE UND TAUCHPUMPE DAMIT
公开(公告)号：EP2930367A1
公开(公告)日：2015-10-14
申请号：EP14819908.6
申请日：2014-04-15
申请人： Ebara Corporation
CPC分类号： F04D29/225 , F04D7/04 , F04D13/02 , F04D29/2255 , F04D29/426 , F04D29/669
摘要： A pump impeller for a submerged pump capable of removing or reducing the radial load is provided. A non-clogging submerged pump is provided, which includes a substantially cylindrical body, an intake port provided in a center of a lower end surface of the body, a discharge port that is open in a side surface of the body, and a flow channel passing from the intake port to the discharge port within the body. The flow channel includes a plurality of flow channels, and the flow channels have their size, shape, and position defined such that fluid unbalance is reduced with respect to an axis of rotation.
摘要翻译： 提供了能够去除或减小径向载荷的用于潜水泵的泵叶轮。 本发明提供一种非堵塞的潜水泵，其包括基本上为圆柱形的主体，设置在主体的下端表面的中心的进气口，在主体的侧表面中敞开的排出口， 从进气口流到体内的排放口。 流动通道包括多个流动通道，并且流动通道具有其尺寸，形状和位置，使得流体不平衡相对于旋转轴线减小。
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公开(公告)号：EP3276178B1
公开(公告)日：2020-11-18
申请号：EP16772548.0
申请日：2016-03-24
申请人： Ebara Corporation
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公开(公告)号：EP3276177A1
公开(公告)日：2018-01-31
申请号：EP16772547.2
申请日：2016-03-24
申请人： Ebara Corporation
发明人： KAWAI, Masahito , SAKACHO, Hiromi , OBUCHI, Masashi , UCHIDA, Hiroshi , ISONO, Miho , TOKAIRIN, Kenta
CPC分类号： F04D29/242 , F04D7/04 , F04D7/045 , F04D29/2288 , F04D29/4273 , F04D29/428 , F04D29/708
摘要： The present invention relates to a volute pump for delivering a liquid containing fibrous substances. The volute pump includes an impeller (1) having a vane (2), and an impeller casing (5) which houses the impeller (1) therein. The impeller casing (5) includes a volute chamber (7), a suction port (3) and a discharge port (4) which communicate with the volute chamber (7), and a tongue portion (10) which forms a starting portion of the volute chamber (7). A groove (18), extending from the suction port (3) to the volute chamber (7), is formed in an inner surface of the impeller casing (5). An intersection point (B), where a terminal end of the vane (2) passes across the groove (18) as viewed from an axial direction of the impeller (1), is located at an opposite side from the tongue portion (10) with respect to a central point of the impeller (1).
摘要翻译： 本发明涉及用于输送含有纤维物质的液体的蜗壳泵。 该蜗壳泵包括具有叶片（2）的叶轮（1）以及容纳叶轮（1）的叶轮壳体（5）。 叶轮壳体5包括与蜗壳室7连通的涡旋室7，吸入口3和排出口4以及构成涡轮室7的开始部分的舌部10， 涡室（7）。 在叶轮壳体（5）的内表面上形成有从吸入口（3）延伸到蜗室（7）的槽（18）。 从叶轮（1）的轴向观察，叶片（2）的终端通过槽（18）的交点（B）位于舌部（10）的相反侧， 相对于叶轮（1）的中心点。
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公开(公告)号：EP2947323A1
公开(公告)日：2015-11-25
申请号：EP14740740.7
申请日：2014-01-14
申请人： Ebara Corporation
摘要： The present invention relates to a volute pump and particularly provides a volute pump for delivering a liquid containing fibrous substances and solid substances, while preventing these substances from obstructing the pump. The volute pump includes a pump casing (10) having a protrusion (14) projecting into a flow passage (11) and separating a starting end of a volute from a terminal end of a volute. The protrusion (14) faces a liquid outlet (23) of an impeller (20). A radius of curvature (Rb) of a cross section of a distal edge of the protrusion (14) at its one side end (14b) is larger than a radius of curvature (Ra) of the cross section of the distal edge of the protrusion (14) at other side end (14a). The other side end (14a) faces a main plate (20a), while the one side end (14b) is located opposite to the main plate (20a).
摘要翻译： 蜗壳泵技术领域本发明涉及一种蜗壳泵，特别是提供一种用于输送含有纤维状物质和固体物质的液体的蜗壳泵，同时防止这些物质阻塞泵。 蜗壳泵包括具有突出到流动通道（11）中并使蜗壳的起始端与蜗壳的终端分离的突起（14）的泵壳体（10）。 突起（14）面向叶轮（20）的液体出口（23）。 突起（14）的一个侧端（14b）的远端边缘的横截面的曲率半径（Rb）大于突起的远端边缘的横截面的曲率半径（Ra） （14）在另一侧端（14a）。 另一侧端14a与主板20a相对，而一侧端14b与主板20a相对。
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公开(公告)号：EP4239197A1
公开(公告)日：2023-09-06
申请号：EP23154594.8
申请日：2023-02-02
申请人： EBARA CORPORATION
IPC分类号： F04C18/12
摘要： A vacuum pump that can discharge particles contained in gas from a rotor chamber well is disclosed. The vacuum pump 1 includes: a pump casing 6 having a rotor chamber 5 therein; a pair of Roots rotors 8 disposed in the rotor chamber 5; and a pair of rotation shafts 9 supporting the pair of Roots rotors 8. The pump casing 6 has a gas inlet 12 and a gas outlet 13 communicating with the rotor chamber 5. A connection 25 between an inner wall 22 forming the rotor chamber 5 and an inner wall 23 forming the gas outlet 13 is located on or located more outwardly than a rotor center line CL extending through a center of rotation RC and a bottom dead center LP of each Roots rotor 8.
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公开(公告)号：EP3276178A1
公开(公告)日：2018-01-31
申请号：EP16772548.0
申请日：2016-03-24
申请人： Ebara Corporation
发明人： KAWAI, Masahito , SAKACHO, Hiromi , OBUCHI, Masashi , UCHIDA, Hiroshi , ISONO, Miho , TOKAIRIN, Kenta
CPC分类号： F04D29/708 , F04D7/04 , F04D7/045 , F04D29/2288 , F04D29/245 , F04D29/4273 , F05D2240/303 , F05D2250/71
摘要： The present invention relates to a volute pump for delivering a liquid containing fibrous substances. The volute pump according to the present invention includes an impeller (1) rotatable together with a rotational shaft (11), and an impeller casing (5) having a suction port (3) and a volute chamber (7). A groove (18), extending from the suction port (3) to the volute chamber (7), is formed in an inner surface of the impeller casing (5). The impeller (1) includes a hub (13) to which the rotational shaft (11) is fixed, and a sweep-back vane (2) extending helically from the hub (13). The sweep-back vane (2) includes a leading edge portion (2a) extending helically from the hub (13), and a trailing edge portion (2b) extending helically from the leading edge portion (2a). The leading edge portion (2a) has a front-side curved surface (2e) extending from an inner end (2c) to an outer end (2d) of the leading edge portion (2a).
摘要翻译： 本发明涉及用于输送含有纤维物质的液体的蜗壳泵。 根据本发明的蜗壳泵包括可与旋转轴（11）一起旋转的叶轮（1）和具有吸入口（3）和蜗壳室（7）的叶轮外壳（5）。 在叶轮壳体（5）的内表面上形成有从吸入口（3）延伸到蜗室（7）的槽（18）。 叶轮（1）具有固定旋转轴（11）的轮毂（13）和从轮毂（13）呈螺旋状延伸的后掠叶片（2）。 反扫叶片（2）包括从轮毂（13）螺旋地延伸的前缘部分（2a）和从前缘部分（2a）螺旋地延伸的后缘部分（2b）。 前缘部分（2a）具有从前缘部分（2a）的内端（2c）延伸到外端（2d）的前侧弯曲表面（2e）。
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公开(公告)号：EP3207260A1
公开(公告)日：2017-08-23
申请号：EP15850633.7
申请日：2015-10-08
申请人： Ebara Corporation
发明人： OBUCHI, Masashi , KUROIWA, So , SAKIHAMA, Dai , GROPPO, Renato , BALBO, Fabio , MATTEAZZI, Mariano , CARDILLO, Lucio , CORSINI, Alessandro , DELIBRA, Giovanni , RISPOLI, Franco
摘要： An impeller assembly for centrifugal pumps has two disk members that have different diameters, are arranged coaxially to a rotation axis and face each other so as to form an interspace; blades are radially arranged in the interspace; the two disk members are also centrally provided with a fastening means for fastening to a transmission shaft, which rotates about the rotation axis. The particularity of the present invention resides in having contoured vanes that protrude radially from the peripheral region of the disk member that has the smallest diameter and are arranged substantially at the blades.
摘要翻译： 一种用于离心泵的叶轮组件具有两个具有不同直径的圆盘构件，它们被布置成与旋转轴线同轴并且彼此面对以形成空隙; 叶片径向地布置在间隙中; 两个盘构件也居中地设置有紧固装置，用于紧固到围绕旋转轴线旋转的传动轴。 本发明的特殊之处在于具有从盘构件的周边区域径向突出且具有最小直径并基本布置在叶片处的波状叶片。
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