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：US08481885B2

公开(公告)日：2013-07-09

申请号：US12825549

申请日：2010-06-29

申请人： Takeshi Tsukamoto ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

发明人： Takeshi Tsukamoto ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

IPC分类号： B23K26/00

CPC分类号： B23K26/24

摘要： A welding apparatus and a welding method are employed for laser narrow groove welding which performs welding scanning a laser beam in the welding direction while feeding a solid filler metal into a narrow groove. The welding apparatus includes a laser beam irradiation head having a mechanism periodically oscillating an irradiation point of the laser beam with a predetermined amplitude in the bottom of the groove, and a filler metal control device having a solid filler metal feeder feeding the solid filler metal to the molten pool formed in the bottom of the groove by the laser beam and adjusting the feeding position independent of a motion of the laser beam irradiation head so that the tip position of the solid filler metal detected is constantly positioned in the center of the groove.

摘要翻译： 激光窄槽焊接采用焊接装置和焊接方法，在将固体填充金属输送到窄槽中的同时，在焊接方向进行激光束的焊接扫描。 该焊接装置具备激光束照射头，该激光束照射头具有在槽的底部周期性地使激光束的照射点以规定的振幅振荡的机构，以及填充金属控制装置，其具有将固体填充剂金属加入的固体填充金属给料体 熔池通过激光束形成在槽的底部，并且独立于激光束照射头的运动调节进给位置，使得检测到的固体填充金属的尖端位置始终位于槽的中心。

公开(公告)号：US20100326969A1

公开(公告)日：2010-12-30

申请号：US12825549

申请日：2010-06-29

申请人： Takeshi TSUKAMOTO ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

发明人： Takeshi TSUKAMOTO ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

IPC分类号： B23K26/00

CPC分类号： B23K26/24

摘要： A welding apparatus and a welding method are employed for laser narrow groove welding which performs welding scanning a laser beam in the welding direction while feeding a solid filler metal into a narrow groove. The welding apparatus includes a laser beam irradiation head having a mechanism periodically oscillating an irradiation point of the laser beam with a predetermined amplitude in the bottom of the groove, and a filler metal control device having a solid filler metal feeder feeding the solid filler metal to the molten pool formed in the bottom of the groove by the laser beam and adjusting the feeding position independent of a motion of the laser beam irradiation head so that the tip position of the solid filler metal detected is constantly positioned in the center of the groove.

摘要翻译： 激光窄槽焊接采用焊接装置和焊接方法，在将固体填充金属输送到窄槽中的同时，在焊接方向进行激光束的焊接扫描。 该焊接装置具备激光束照射头，该激光束照射头具有在槽的底部周期性地使激光束的照射点以规定的振幅振荡的机构，以及填充金属控制装置，其具有将固体填充剂金属加入的固体填充金属给料体 熔池通过激光束形成在槽的底部，并且独立于激光束照射头的运动调节进给位置，使得检测到的固体填充金属的尖端位置始终位于槽的中心。

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：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。