公开(公告)号：US5316441A

公开(公告)日：1994-05-31

申请号：US13053

申请日：1993-02-03

Applicant: Colin Osborne

Inventor： Colin Osborne

IPC: F04D17/10 ,  F04D29/44 ,  F04D29/30

CPC classification number: F04D29/448 ,  F04D29/444 ,  F05D2250/52

Abstract: A multi-row rib diffuser is provided which comprises a first row of low ribs with relatively small height extending into regions of very low flow angle and a row of high ribs located behind the leading edge of the first row of ribs. The high ribs extend further into the region of the low flow angle and accept the connected flow from the low ribs as well as additional low angle flow not corrected by the low ribs.

Abstract translation: 提供了一种多排肋扩散器，其包括第一排低肋，具有相对较小的高度延伸到非常低的流动角度的区域中，以及一排位于第一排肋的前缘后面的一排高肋。 高肋进一步延伸到低流动角度的区域中，并接受来自低肋的连接流以及未被低肋校正的附加低角度流。

公开(公告)号：US5190440A

公开(公告)日：1993-03-02

申请号：US667768

申请日：1991-03-11

Applicant: Martin D. Maier ,  Colin Osborne

Inventor： Martin D. Maier ,  Colin Osborne

IPC: F01D11/02 ,  F04D29/16 ,  F04D29/66 ,  F16J15/16

CPC classification number: F04D29/162 ,  F01D11/02 ,  F04D29/667 ,  F16J15/164 ,  F05D2210/42

Abstract: A labyrinth seal which reduces the inlet swirl and circumferential flow of fluid within the sealing cavity of a rotating shaft system in order to eliminate the destabilizing influence of the labyrinth seal, has a plurality of primary flow bypass passageways which extend from the high pressure face of the seal to the space between a first set and a second set of labyrinth teeth. The plurality of primary flow bypass passageways are equally spaced around the circumference of the seal and are preferably inclined such that the fluid is introduced into the seal cavity at a desired orientation. Each of the primary flow bypass passageways can be a passageway which is inclined at an acute angle to the shaft axis or a combination of an axial passageway and a radial passageway. The primary flow bypass passageways can be in the form of a plurality of generally radial passageways which intersect a common annular opening in the high pressure face of the seal. Also, multiple sets of secondary flow bypass passageways can be positioned at predetermined locations downstream from the first set of passages to function in a similar manner. Annular grooves can be provided in the outer surface of the seal to connect each adjacent set of secondary flow bypass passageways which straddle a set of labyrinth teeth.

Abstract translation: 为了消除迷宫式密封件的不稳定影响，减少旋转轴系的密封空腔内的流体入口涡流和周向流动的迷宫式密封件具有多个主流动旁路通道，其从高压面 密封到第一组和第二组迷宫齿之间的空间。 多个主要流动旁路通道围绕密封件的圆周等间隔开，并且优选地是倾斜的，使得流体以期望的取向被引入到密封腔中。 每个主流动旁路通路可以是与轴线成锐角倾斜的通道或轴向通道和径向通道的组合。 主要流动旁路通道可以是与密封件的高压面中的公共环形开口相交的多个大致径向通道的形式。 而且，多组二次流旁路通道可以位于第一组通道下游的预定位置处，以类似的方式起作用。 环形槽可以设置在密封件的外表面中，以连接跨越一组迷宫齿的每组相邻的二次流旁路通道。

公开(公告)号：US5161943A

公开(公告)日：1992-11-10

申请号：US798513

申请日：1991-11-26

Applicant: Martin D. Maier ,  Colin Osborne

Inventor： Martin D. Maier ,  Colin Osborne

IPC: F01D11/02 ,  F04D29/16 ,  F04D29/66 ,  F16J15/16

CPC classification number: F04D29/667 ,  F01D11/02 ,  F04D29/162 ,  F16J15/164 ,  F05D2210/42

Abstract: A labyrinth seal is disclosed which reduces the inlet swirl and circumferential flow of fluid within the sealing cavity of a rotating shaft system. The primary purpose is to eliminate the destabilizing influence of the labyrinth seal which can induce rotor instability. This is accomplished by the addition of flow bypass passageways which extend from the high pressure face of the seal to the space between the first and second set of labyrinth teeth. The flow bypass passageways are equally spaced around the circumference of the seal and are inclined such that the fluid is introduced into the seal cavity at a desired orientation. Multiple sets of flow bypass passageways are also positioned at predetermined locations downstream from the first set of passages and function in a similar manner. Annular grooves are provided in the outer surface of the seal to connect each adjacent set of flow bypass passageways which straddle each set of labyrinth teeth.

Abstract translation: 公开了一种迷宫式密封件，其减小了旋转轴系统的密封腔内的流体的入口涡流和周向流动。 主要目的是消除迷宫密封的不稳定影响，从而引起转子的不稳定性。 这是通过添加从密封件的高压面延伸到第一和第二组迷宫齿之间的空间的流动旁路通道来实现的。 流动旁路通道围绕密封件的圆周等间隔开，并且倾斜使得流体以期望的取向被引入到密封腔中。 多组流动旁路通道也位于第一组通道下游的预定位置处并以类似的方式起作用。 环形槽设置在密封件的外表面中，以连接每一组相邻的一组流动旁路通道，跨过每组迷宫齿。

公开(公告)号：US4902200A

公开(公告)日：1990-02-20

申请号：US186001

申请日：1988-04-25

Applicant: Phiroze Bandukwalla ,  Colin Osborne

Inventor： Phiroze Bandukwalla ,  Colin Osborne

IPC: F01D17/14

CPC classification number: F04D29/464 ,  F01D17/143 ,  F04D29/462 ,  F05D2250/181 ,  F05D2250/52 ,  Y10S415/914

Abstract: An improved diffuser is provided for centrifugal compressors and the like. The diffuser has a movable wall to which is attached a plurality of ribbed vanes.

Abstract translation: 为离心压缩机等提供改进的扩散器。 扩散器具有可移动的壁，多个肋状叶片附接到活动壁。

公开(公告)号：US4626168A

公开(公告)日：1986-12-02

申请号：US734571

申请日：1985-05-15

Applicant: Colin Osborne ,  Peter N. Chow

Inventor： Colin Osborne ,  Peter N. Chow

IPC: F04D29/44 ,  F04D29/30

CPC classification number: F04D29/444

Abstract: The improved diffuser includes pinching a portion of a diffuser flow passageway that has ribs therein extending partially across the diffuser passageway and that have their leading edges located away from the inlet of the diffuser passageway. The diffuser passageway is pinched from the diffuser inlet to the leading edge of the ribs to provide improved flow angle alignment and the leading edges of the ribs been moved away from the impeller to avoid buffeting and noise as the compressed gas leaves the impeller and enters the annular diffuser passageway.

Abstract translation: 改进的扩散器包括夹持扩散器流动通道的一部分，其具有部分横跨扩散器通道延伸的肋，并且其前缘位于远离扩散器通道的入口的位置。 扩散器通道从扩散器入口被挤压到肋的前缘，以提供改进的流角对准，并且肋的前缘已经远离叶轮移动，以避免当压缩气体离开叶轮并进入 环形扩散器通道。

公开(公告)号：US5452986A

公开(公告)日：1995-09-26

申请号：US180447

申请日：1994-01-12

Applicant: Colin Osborne ,  Martin D. Maier

Inventor： Colin Osborne ,  Martin D. Maier

IPC: F03B3/18 ,  F04D29/46 ,  F04D27/00

CPC classification number: F04D29/466 ,  F04D29/462 ,  F05D2250/52

Abstract: A vaned diffuser is provided. The diffuser comprises a housing having a first and second flow wall defining a flow path for the exit flow from an impeller. Twisted vanes are mounted on a movable structure capable of travel inside a chamber adjacent the first flow wall. The twisted vanes extend through rotatable structures rotatably retained in the flow walls such that the twisted vanes are slidably disposed across the flow path. Lateral movement of the movable structure moves the twisted vanes through the exit flow thus varying the stagger angle of the vane depending on which section of the twisted vane is in the exit flow. The rotatable structures have twisted openings that match the vane cross-section and twist so that the rotatable structures readily rotate as the twisted vanes are moved through them.

Abstract translation: 提供一个叶片式扩散器。 扩散器包括具有第一和第二流动壁的壳体，该第一和第二流动壁限定用于来自叶轮的出口流动的流动路径。 扭转叶片安装在能够在邻近第一流动壁的室内行进的可移动结构上。 扭转的叶片延伸通过可旋转地保持在流动壁中的可旋转结构，使得扭转叶片可滑动地设置在横跨流动路径上。 可移动结构的横向移动使扭转的叶片通过出口流动，从而根据扭转叶片的哪个部分在出口流中而改变叶片的交错角度。 可旋转结构具有与叶片横截面和扭曲相匹配的扭曲开口，使得当扭转叶片移动通过它们时，可旋转结构容易旋转。