公开(公告)号：US5108257A

公开(公告)日：1992-04-28

申请号：US749481

申请日：1991-08-15

申请人： Tetsuo Fukazawa ,  Makoto Toyohara

发明人： Tetsuo Fukazawa ,  Makoto Toyohara

IPC分类号： B63H11/08 ,  F04D29/18 ,  F04D29/22 ,  F04D29/24 ,  F04D29/44

CPC分类号： F04D29/242 ,  B63H11/08 ,  F04D29/183 ,  F04D29/4273 ,  F04D29/448

摘要： A turbo pump is provided with an impeller having a volute casing for a diffuser type casing. The configuration of a meridian section of the impeller shroud at the side of a boss is made as a concave arch-like surface of revolution. The shroud at the side of the blade inlet is cylindrical and substantially parallel to the shaft about which the impeller turns. Each of the blades of the impeller is so shaped that the edge of the blade inlet projects toward the impeller eye and is smoothly connected to the surface of the shroud. The inlet angle of the blade is as small as possible.

公开(公告)号：US5242268A

公开(公告)日：1993-09-07

申请号：US862322

申请日：1992-04-02

申请人： Tetsuo Fukazawa ,  Kenkichi Kamata ,  Shiro Ikuta

发明人： Tetsuo Fukazawa ,  Kenkichi Kamata ,  Shiro Ikuta

IPC分类号： F01P5/10 ,  F04D29/22 ,  F04D29/24

CPC分类号： F04D29/2222 ,  F04D29/242

摘要： An impeller in a water pump for circulation of cooling medium in a cooling system of an engine has a shroud with a shroud end to which the edges of the blade inlets are attached and which is formed in the cylindrical configuration substantially parallel to the rotary shaft. Each of the edges of the blade inlets is shaped so that it is continuously smooth from a shroud end surface at the inlet side thereof and extends upstream in the axial direction, while each of the edges of the blade inlets at the side of a casing extends substantially perpendicularly to the rotary shaft. The edge of the blade inlet attached to the cylindrical shroud end and the edge of the blade inlet at the casing side being connected therebetween by a smooth arc-like curve projecting convexly upstream. The inlet angle of the blade is set to substantially 0.degree. at the inlet edge at the shroud end and to an angle calculated substantially on the basis of the conventional design at the inlet edge at the casing side. The impeller has the blades each formed by connecting the blade inlet to a blade outlet by a smooth curved surface.

公开(公告)号：US5558502A

公开(公告)日：1996-09-24

申请号：US359907

申请日：1994-12-20

申请人： Tetsuo Fukazawa ,  Chugen Chin

发明人： Tetsuo Fukazawa ,  Chugen Chin

IPC分类号： F03B3/12 ,  F04D13/04 ,  F04D15/02 ,  F04D29/24 ,  F04D29/66 ,  F04D31/00 ,  F04D29/22 ,  F04B9/10 ,  F04B49/00

CPC分类号： F04D15/0218 ,  F03B3/125 ,  F04D13/04 ,  F04D29/242 ,  F04D29/669 ,  F04D31/00 ,  Y02E10/223

摘要： In a turbo, pump according to the present invention, blades 3e and a shroud 3f are continuously formed with a boss 3c of a turbine wheel 3, a meridian plane configuration of the shroud 3f is formed as an concave arcing rotatable surface. A boss shroud 3f.sub.1 is formed substantially parallel to the axis of rotation O. A portion 3e.sub.2 of a blade outlet edge 3e.sub.1 is smoothly continuous to the boss shroud 3f.sub.1 and largely projects downstream. A portion 3e.sub.3 of the blade outlet edge 3e.sub.1 is formed substantially perpendicular to the axis of rotation O. The blade outlet edge 3e.sub.1 is formed with a smooth arc-like curve projecting convexly downstream between the portion 3e.sub.3 and the portion 3e.sub.2. An angle of the blade outlet edge 3e.sub.1 is set to an angle of substantially 0.degree. at the portion 3e.sub.2 of the blade outlet edge 3e.sub.1 and to substantially the conventional degree of angle at the portion 3e.sub.3 of the blade outlet edge 3e.sub.1. Further, the blade inlet 3a and the blade outlet 3b are connected there between by a curve.

摘要翻译： 在根据本发明的涡轮泵中，叶片3e和护罩3f连续形成有涡轮机叶轮3的凸台3c，护罩3f的子午面构造形成为凹弧形旋转表面。 凸起罩3f1基本上平行于旋转轴线O形成。叶片出口边缘3e1的部分3e2平滑地连续到凸台罩3f1并且大部分向下游突出。 叶片出口边缘3e1的部分3e3基本上垂直于旋转轴线O形成。叶片出口边缘3e1形成有在部分3e3和部分3e2之间凸出下游的平滑的弧形曲线。 叶片出口边缘3e1的角度在叶片出口边缘3e1的部分3e2处被设定为基本上为0°的角度，并且在叶片出口边缘3e1的部分3e3处被设定为基本上常规的角度。 此外，叶片入口3a和叶片出口3b之间通过曲线连接。

公开(公告)号：US4708585A

公开(公告)日：1987-11-24

申请号：US839772

申请日：1986-03-14

申请人： Tetsuo Fukazawa ,  Shigeyoshi Yokoyama

发明人： Tetsuo Fukazawa ,  Shigeyoshi Yokoyama

IPC分类号： F04D1/00 ,  F04D1/04 ,  F04D29/22 ,  F04D17/06

CPC分类号： F04D29/225

摘要： A centrifugal pump including a stationary guide vane secured to a casing, and a centrifugal impeller arranged for rotation in the casing in a position adjacent the stationary guide vane. The centrifugal impeller has at least one blade wound in convolutions on a peripheral surface of a hub and having a blade inlet surface substantially perpendicular to the axis of rotation of the impeller and a fluid flow entrance surface substantially parallel to the blade inlet surface. The blade is wound in a suitable number of convolutions extending from an inlet to an outlet on the hub and is forwardly inclined toward the axis of rotation of the impeller at an increasingly greater angle in going from the inlet toward the outlet, so as to produce centrifugal forces at the outlet. The centrifugal impeller has a high head which has been beyond the power of axial impellers to achieve.

摘要翻译： 一种离心泵，其包括固定在壳体上的固定导向叶片和离心式叶轮，所述离心式叶轮布置成在与固定导向叶片相邻的位置在壳体内旋转。 离心式叶轮具有至少一个叶片，卷绕在轮毂的圆周表面上并且具有基本上垂直于叶轮的旋转轴线的叶片入口表面和基本上平行于叶片入口表面的流体流入口表面。 刀片以适当数量的从入口延伸到轮毂上的出口卷绕，并且在从入口朝向出口处以越来越大的角度朝向叶轮的旋转轴线向前倾斜，以便产生 出口处的离心力。 离心式叶轮具有高度的头部，其已经超出了轴向叶轮的功率。

公开(公告)号：US4676714A

公开(公告)日：1987-06-30

申请号：US815365

申请日：1985-12-31

申请人： Tetsuo Fukazawa ,  Shigeyoshi Yokoyama

发明人： Tetsuo Fukazawa ,  Shigeyoshi Yokoyama

IPC分类号： F04D1/00 ,  F04D3/02 ,  F04D29/42 ,  F04D29/50 ,  F04D17/02

CPC分类号： F04D29/426 ,  F04D3/02

摘要： A centrifugal pump capable of rotating in a normal direction while enabling a fluid to flow in a normal direction and rotating in a reverse direction while enabling the fluid to flow in the reverse direction without having its pumping efficiency dropping to a lower level in a reverse rotation mode than in a normal rotation mode. The pump includes two pump casings each having an inlet and outlet portion extending tangentially of each pump casing and connected together through an intermediate casing to provide a unitary structure in which the two pump casings are located concentrically in face-to-face relation, and an impeller having a helical blade extending axially from one zone in one pump casing into another zone in the other pump casing for rotation along the center axis of the pump. The impeller has a minimum outer diameter at the center of its center axis and includes portions each flaring in one of axial opposite directions in the form of a cone. The impeller has an outer periphery cooperating with an inner periphery of the intermediate casing to define a small clearance therebetween. The inlet and outlet portions of the two pump casings are arranged such that when the two pump casings alternately act as a suction casing at the time of normal rotation and reverse rotation, the influx direction of the fluid through the inlet and outlet portion of the pump casing acting as a suction casing is opposed to the direction of rotation of the impeller means.

摘要翻译： 一种离心泵，其能够沿正向旋转，同时使流体能够沿正向流动并且沿相反方向旋转，同时使流体能够在相反方向上流动，而不会使其泵送效率在反向旋转中下降到较低水平 模式比正常旋转模式。 泵包括两个泵壳体，每个泵壳体具有沿每个泵壳体切向延伸的入口和出口部分，并通过中间壳体连接在一起，以提供一体式结构，其中两个泵壳体以面对面的关系同心地定位， 叶轮具有从一个泵壳体中的一个区域轴向延伸到另一个泵壳体中的另一个区域的螺旋叶片，用于沿泵的中心轴线旋转。 叶轮在其中心轴线的中心处具有最小外径，并且包括以圆锥形式的轴向相反方向中的一个方向上的部分。 叶轮具有与中间壳体的内周配合的外周，以在其间形成小的间隙。 两个泵壳的入口和出口部分布置成使得当两个泵壳在正常旋转和反向旋转时交替地作为吸入壳体时，流体通过泵的入口和出口部分的流入方向 作为吸入壳体的壳体与叶轮装置的旋转方向相对。