公开(公告)号：US08408873B2

公开(公告)日：2013-04-02

申请号：US12018527

申请日：2008-01-23

申请人： Masaaki Iwasa ,  Takeshi Tsukamoto ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Ryujiro Udo

发明人： Masaaki Iwasa ,  Takeshi Tsukamoto ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Ryujiro Udo

IPC分类号： F01D5/20 ,  F04D29/30

CPC分类号： B23K26/24 ,  B23K26/206 ,  B23K33/00 ,  B23K2101/001 ,  F01D5/3061 ,  F04D29/026 ,  F04D29/2222 ,  F05D2230/234 ,  F05D2230/237 ,  F05D2230/64 ,  F05D2300/43 ,  F05D2300/603 ,  Y10T29/49336 ,  Y10T29/49968

摘要： Blades are connected to the surface of a disk and slots are formed in the surface of a shroud, which is opposite from the other surface of the shroud where the blades are to be welded. The blades are arranged on the opposite surface from the slots and a laser beam is applied from the surface in which the slots are formed, to weld the shroud and the blades. Components are installed on the surfaces of the slots on the opposite side from the blades after the blades and the shroud in which the slots are formed are welded. Alternatively, the slots are filled with a material different from that of the shroud, such as a resin. With this configuration, distortion caused by welding heat can be reduced without degrading the fluid performance.

摘要翻译： 叶片连接到盘的表面，并且槽形成在护罩的表面中，护罩的表面与待焊接的刀片的护罩的另一个表面相对。 刀片设置在与槽相反的表面上，并且从其中形成槽的表面施加激光束以焊接护罩和刀片。 组件安装在与叶片相对侧的槽的表面上，在叶片和形成有槽的护罩之间被焊接。 或者，槽被填充有与护罩不同的材料，例如树脂。 利用这种结构，可以降低焊接热引起的变形，而不降低流体性能。

公开(公告)号：US20080237195A1

公开(公告)日：2008-10-02

申请号：US12018527

申请日：2008-01-23

申请人： Masaaki Iwasa ,  Takeshi Tsukamoto ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Ryujiro Udo

发明人： Masaaki Iwasa ,  Takeshi Tsukamoto ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Ryujiro Udo

IPC分类号： F01D5/20 ,  B23K31/02

CPC分类号： B23K26/24 ,  B23K26/206 ,  B23K33/00 ,  B23K2101/001 ,  F01D5/3061 ,  F04D29/026 ,  F04D29/2222 ,  F05D2230/234 ,  F05D2230/237 ,  F05D2230/64 ,  F05D2300/43 ,  F05D2300/603 ,  Y10T29/49336 ,  Y10T29/49968

摘要： Blades are connected to the surface of a disk and slots are formed in the surface of a shroud, which is opposite from the other surface of the shroud where the blades are to be welded. The blades are arranged on the opposite surface from the slots and a laser beam is applied from the surface in which the slots are formed, to weld the shroud and the blades. If powder is melted and put in the slots formed for welding in the shroud to fill the slots, thermal distortion occurs. On the other hand, if the slots are left empty, a problem of degrading the fluid performance arises. To solve these problems, components are installed on the surfaces of the slots on the opposite side from the blades after the blades and the shroud in which the slots are formed are welded. Alternatively, the slots are filled with a material different from that of the shroud, such as a resin. With this configuration, distortion caused by welding heat can be reduced without degrading the fluid performance. This method can be applied to the case where the blades are formed on the surface of the shroud, not on the surface of the disk, and to the slots formed in the disk after the blades and the disk are laser-welded.

摘要翻译： 叶片连接到盘的表面，并且槽形成在护罩的表面中，护罩的表面与待焊接的刀片的护罩的另一个表面相对。 刀片设置在与槽相反的表面上，并且从其中形成槽的表面施加激光束以焊接护罩和刀片。 如果粉末熔化并放入形成为用于在护罩中焊接的槽以填充槽，则发生热变形。 另一方面，如果槽是空的，则出现降低流体性能的问题。 为了解决这些问题，在叶片和其中形成有狭槽的护罩焊接之后，将部件安装在与叶片相对侧上的槽的表面上。 或者，槽被填充有与护罩不同的材料，例如树脂。 利用这种结构，可以降低焊接热引起的变形，而不降低流体性能。 该方法可以应用于在叶片和盘被激光焊接之后叶片形成在护罩的表面上而不是在盘的表面上的情况下以及形成在盘中的槽。

公开(公告)号：US08426766B2

公开(公告)日：2013-04-23

申请号：US12248271

申请日：2008-10-09

申请人： Takeshi Tsukamoto ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Ryujiro Udo ,  Masaaki Iwasa

发明人： Takeshi Tsukamoto ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Ryujiro Udo ,  Masaaki Iwasa

IPC分类号： B23K26/00

CPC分类号： F04D29/284 ,  B23K26/144 ,  B23K26/244 ,  B23K26/28 ,  B23K33/004 ,  B23K2101/001 ,  F01D5/048 ,  F01D5/3061 ,  F04D29/023 ,  F05D2230/234 ,  Y02T50/673 ,  Y10T29/49316

摘要： A welding method for an impeller having a plurality of blades, a disc and an exterior body including a shroud welded to the plurality of blades, comprising the steps of: a first step for forming a groove having a prescribed depth and a prescribed width toward one of the blades on a surface of the disc or the exterior body, which is opposite to a surface against the blade abuts, emitting laser light toward the bottom of the groove, and performing melt-through bead welding to bond the bottom of the groove to an end of the blade in such a way that a bead formed on the back of the disc or the shroud is curved with an inward depression; and a second step for performing overlaying welding after completion of the first step by supplying a filler metal to a molten zone while the bottom of the groove is scanned with the laser light.

摘要翻译： 一种用于叶轮的焊接方法，所述叶轮具有多个叶片，盘和外部主体，所述叶片和外部主体包括焊接到所述多个叶片的罩体，包括以下步骤：第一步骤，用于形成具有规定深度和规定宽度的槽朝向一个 在与盘片相对的表面上的刀片表面上的刀片邻接，朝向凹槽的底部发射激光，并且进行熔透珠焊接以将槽的底部结合到 叶片的端部以这样的方式使得形成在盘或罩的背面上的胎圈以向内的凹陷弯曲; 以及第二步骤，通过在用激光扫描槽的底部的同时向熔融区域供应填充金属来完成第一步骤之后的覆盖焊接。

公开(公告)号：US08313290B2

公开(公告)日：2012-11-20

申请号：US12488910

申请日：2009-06-22

申请人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

发明人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

IPC分类号： F04D29/44

CPC分类号： F04D29/441

摘要： In a high pressure centrifugal compressor, the occurrence of rotating stall noticeable in a comparatively-low specific speed wheel stage is prevented, thereby high efficient fluid performance is obtained and reliability is improved. The centrifugal compressor has a first vaneless diffuser with a constant flow channel height on the downstream side of an impeller, and a second vaneless diffuser in which the flow channel height decreases in a flow direction from an inlet to an outlet on the downstream side of the first vaneless diffuser. These diffusers are combined with an impeller using thick blades.

摘要翻译： 在高压离心式压缩机中，防止了在比较低的特定速度车轮台处显示的转动失速的发生，从而获得了高效率的流体性能，并提高了可靠性。 离心压缩机具有在叶轮的下游侧具有恒定的流动通道高度的第一无叶漫射器和第二无叶漫射器，其中流动通道高度在流动方向上从入口到下游侧的出口减小 第一个无叶漫射器。 这些扩散器与使用厚叶片的叶轮组合。

公开(公告)号：US08267644B2

公开(公告)日：2012-09-18

申请号：US12511743

申请日：2009-07-29

申请人： Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano ,  Toshio Itou ,  Takanori Shibata ,  Manabu Yagi

发明人： Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano ,  Toshio Itou ,  Takanori Shibata ,  Manabu Yagi

IPC分类号： F04D29/44

CPC分类号： F04D17/122 ,  F04D29/441 ,  F04D29/444

摘要： In a multistage centrifugal compressor, a plurality of impellers is attached to the same rotary shaft. Vaned Diffusers and vaneless diffusers are used, as diffusers, for respective compressor stages configuring the compressor. The vaned diffusers are continuously used from the first compressor stage to the middle compressor stage, and the vaneless diffusers are used for the last compressor stage and the previous stage. While high efficiency is maintained at the compressor stages having the vaned diffusers, an operating flow range is secured at the compressor stages having the vaneless diffusers.

摘要翻译： 在多级离心式压缩机中，多个叶轮连接在同一个旋转轴上。 对于构成压缩机的各个压缩机级，使用Vaned扩散器和无叶扩散器作为扩散器。 从第一压缩机阶段到中间压缩机阶段连续使用有叶扩散器，无级扩散器用于最后一个压缩机级和前一级。 在具有带叶片的扩散器的压缩机级保持高效率的情况下，在具有无叶漫射器的压缩机级确保工作流量范围。

公开(公告)号：US20090317248A1

公开(公告)日：2009-12-24

申请号：US12488910

申请日：2009-06-22

申请人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

发明人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

IPC分类号： F04D29/44

CPC分类号： F04D29/441

摘要： In a high pressure centrifugal compressor, the occurrence of rotating stall noticeable in a comparatively-low specific speed wheel stage is prevented, thereby high efficient fluid performance is obtained and reliability is improved. The centrifugal compressor has a first vaneless diffuser with a constant flow channel height on the downstream side of an impeller, and a second vaneless diffuser in which the flow channel height decreases in a flow direction from an inlet to an outlet on the downstream side of the first vaneless diffuser. These diffusers are combined with an impeller using thick blades.

摘要翻译： 在高压离心式压缩机中，防止了在比较低的特定速度车轮台处显示的转动失速的发生，从而获得了高效率的流体性能，并提高了可靠性。 离心压缩机具有在叶轮的下游侧具有恒定的流动通道高度的第一无叶漫射器和第二无叶漫射器，其中流动通道高度在流动方向上从入口到下游侧的出口减小 第一个无叶漫射器。 这些扩散器与使用厚叶片的叶轮组合。

公开(公告)号：US08287236B2

公开(公告)日：2012-10-16

申请号：US12117288

申请日：2008-05-08

申请人： Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tadaharu Kishibe ,  Manabu Yagi ,  Tetsuya Kuwano

发明人： Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tadaharu Kishibe ,  Manabu Yagi ,  Tetsuya Kuwano

IPC分类号： F04D1/10

CPC分类号： F04D29/444 ,  F04D17/122 ,  F04D29/4213

摘要： A multistage centrifugal compressor includes a rotary shaft, and multistage impellers attached to the rotary shaft. Each of the impellers includes a hub, a shroud and blades therebetween in a radial cascade arrangement. An annular suction passage for guiding the fluid flow from the inward radial direction to a blade inlet is disposed upstream of the centrifugal impeller. A diffuser is disposed downstream of the centrifugal impeller. A bend portion is disposed downstream of the diffuser, and a return channel with a guide blade portion is disposed downstream of the bend portion. The annular suction passage at a hub side includes an axial parallel portion.

摘要翻译： 多级离心压缩机包括旋转轴和连接到旋转轴的多级叶轮。 每个叶轮在径向级联布置中包括轮毂，护罩和叶片。 用于将流体流动从内向径向引导到叶片入口的环形抽吸通道设置在离心式叶轮的上游。 扩散器设置在离心式叶轮的下游。 弯曲部设置在扩散器的下游，并且具有引导叶片部分的返回通道设置在弯曲部分的下游。 在轮毂侧的环形吸入通道包括轴向平行部分。

公开(公告)号：US20100129224A1

公开(公告)日：2010-05-27

申请号：US12623089

申请日：2009-11-20

申请人： Takanori SHIBATA ,  Manabu Yagi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano

发明人： Takanori SHIBATA ,  Manabu Yagi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano

IPC分类号： F04D29/28 ,  B23P15/04

CPC分类号： F04D29/284 ,  F04D29/30 ,  Y10T29/49329

摘要： A centrifugal compressor provided with an impeller which is configured to have a plurality of blades arranged at a predetermined interval in a circumferential direction of a hub rotating together with a rotation shaft, in which a blade angle on a shroud side of the blade distributes to have a minimum value at a position between a leading edge of the blade and a midpoint of a camber line on the shroud side, and a maximum value at a position between the midpoint of the camber line on the shroud side and a trailing edge of the blade, and a blade angle of the blade on a hub side distributes so as to have a maximum value at a position between a leading edge and a midpoint of a camber line on the hub side.

摘要翻译： 一种设置有叶轮的离心式压缩机，其被构造成具有在与旋转轴一起旋转的轮毂的圆周方向上以预定间隔布置的多个叶片，叶片的护罩侧的叶片角度分布在其中， 在叶片的前缘和护罩侧的外倾线的中点之间的位置处的最小值以及护罩侧的外倾线的中点与叶片的后缘之间的位置处的最大值 并且轮毂侧上的叶片的叶片角度分布成在轮毂侧的倾斜线的前缘和中点之间的位置处具有最大值。

公开(公告)号：US08308420B2

公开(公告)日：2012-11-13

申请号：US12183443

申请日：2008-07-31

申请人： Manabu Yagi ,  Tadaharu Kishibe ,  Takanori Shibata ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano

发明人： Manabu Yagi ,  Tadaharu Kishibe ,  Takanori Shibata ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano

IPC分类号： F04D27/00

CPC分类号： F04D29/284 ,  F04D29/30

摘要： A centrifugal compressor is equipped with an impeller having a blade angle distribution that makes it possible to achieve a relatively wide operating range. The blade angle of a shroud side facing a circular plate of a blade is termed a first angle and a blade angle of a hub side disposed at the circular plate is a second. The shroud side is formed in a curved shape having an angle distribution from a front area in a shaft direction toward a centrifugal direction in which the first angle is the local maximum point before a substantially middle portion and the local minimum point after the substantially middle point. The hub side is formed in a curved shape having an angle distribution from the front area in the shaft direction toward the centrifugal direction in which the second angle is the maximum local point before the substantially middle portion.

摘要翻译： 离心压缩机配备有具有叶片角度分布的叶轮，其能够实现相对宽的操作范围。 面向叶片圆板的护罩侧的叶片角度称为第一角度，并且设置在圆板处的轮毂侧的叶片角度为第二角度。 护罩侧形成为具有从轴方向的前方区域朝向离心方向的角度分布的弯曲形状，其中第一角度在大致中间部分之前的局部最大点和大体上中点之后的局部最小点 。 毂侧形成为具有从轴方向的前方区域朝向离心方向的角度分布的弯曲形状，其中第二角度是大致中间部分之前的最大局部点。

公开(公告)号：US20090035122A1

公开(公告)日：2009-02-05

申请号：US12183443

申请日：2008-07-31

申请人： Manabu YAGI ,  Tadaharu Kishibe ,  Takanori Shibata ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano

发明人： Manabu YAGI ,  Tadaharu Kishibe ,  Takanori Shibata ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano

IPC分类号： F04D27/00 ,  F01D5/04 ,  F01D5/14

CPC分类号： F04D29/284 ,  F04D29/30

摘要： A centrifugal compressor is equipped with an impeller having a blade angle distribution that makes it possible to achieve a relatively wide operating range. The blade angle of a shroud side facing a circular plate of a blade is termed a first angle and a blade angle of a hub side disposed at the circular plate is a second angle. The shroud side is formed in a curved shape having an angle distribution from a front area in a shaft direction toward a centrifugal direction in which the first angle is the local maximum point before a substantially middle portion and the local minimum point after the substantially middle point. The hub side is formed in a curved shape having an angle distribution from the front area in the shaft direction toward the centrifugal direction in which the second angle is the maximum local point before the substantially middle portion.

摘要翻译： 离心压缩机配备有具有叶片角度分布的叶轮，其能够实现相对宽的操作范围。 面向叶片圆形板的护罩侧的叶片角被称为第一角度，并且设置在圆板处的轮毂侧的叶片角度为第二角度。 护罩侧形成为具有从轴方向的前方区域朝向离心方向的角度分布的弯曲形状，其中第一角度在大致中间部分之前的局部最大点和大体上中点之后的局部最小点 。 毂侧形成为具有从轴方向的前方区域朝向离心方向的角度分布的弯曲形状，其中第二角度是大致中间部分之前的最大局部点。