公开(公告)号：US07326027B1

公开(公告)日：2008-02-05

申请号：US10856361

申请日：2004-05-25

申请人： Gary J. Skoch ,  Mark A. Stevens ,  Thomas A. Jett

发明人： Gary J. Skoch ,  Mark A. Stevens ,  Thomas A. Jett

IPC分类号： F01D17/08

CPC分类号： F04D27/0207 ,  F04D27/0238 ,  F04D27/0246 ,  F04D27/0253 ,  F04D29/444 ,  F04D29/684 ,  F05D2250/52

摘要： Centrifugal compressor flow stabilizing devices and methods of operation thereof are disclosed that act upon the flow field discharging from the impeller of a centrifugal compressor and modify the flow field ahead of the diffuser vanes such that flow conditions contributing to rotating stall and surge are reduced or even eliminated. In some embodiments, shaped rods and methods of operation thereof are disclosed, whereas in other embodiments reverse-tangent air injection devices and methods are disclosed.

摘要翻译： 公开了离心压缩机流量稳定装置及其操作方法，其作用于从离心式压缩机的叶轮排出的流场，并改变扩散器叶片之前的流场，使得有助于旋转失速和喘振的流动条件减少甚至 消除了 在一些实施例中，公开了成形杆及其操作方法，而在其它实施例中，公开了倒角切向空气喷射装置和方法。

公开(公告)号：US06200094B1

公开(公告)日：2001-03-13

申请号：US09350207

申请日：1999-06-18

申请人： Gary J. Skoch ,  Daniel E. Paxson

发明人： Gary J. Skoch ,  Daniel E. Paxson

IPC分类号： F04D2944

CPC分类号： F04D29/444 ,  Y10S415/914

摘要： A wave augmented diffuser for a centrifugal compressor surrounds the outlet of an impeller that rotates on a drive shaft having an axis of rotation. The impeller brings flow in in an axial direction and imparts kinetic energy to the flow discharging it in radial and tangential directions. The flow is discharged into a plurality of circumferentially disposed wave chambers. The wave chambers are periodically opened and closed by a rotary valve such that the flow through the diffuser is unsteady. The valve includes a plurality of valve openings that are periodically brought into and out of fluid communication with the wave chambers. When the wave chambers are closed, a reflected compression wave moves upstream towards the diffuser bringing the flow into the wave chamber to rest. This action recovers the kinetic energy from the flow and limits any boundary layer growth. The flow is then discharged in an axial direction through an opening in the valve plate when the valve plate is rotated to an open position. The diffuser thus efficiently raises the static pressure of the fluid and discharges an axially directed flow at a radius that is predominantly below the maximum radius of the diffuser.

摘要翻译： 用于离心压缩机的波浪扩散器围绕在具有旋转轴线的驱动轴上旋转的叶轮的出口。 叶轮在轴向方向流入，并向沿着径向和切向方向排放的流体赋予动能。 流动被排放到多个周向设置的波浪室中。 波形室由旋转阀定期打开和关闭，使得通过扩散器的流动是不稳定的。 阀包括周期性地进入和离开与波浪室流体连通的多个阀开口。 当波浪室关闭时，反射的压缩波向上游朝向扩散器移动，使流动进入波浪室以停止。 该动作从流动中恢复动能并限制任何边界层生长。 然后，当阀板旋转到打开位置时，流体在轴向通过阀板中的开口排出。 因此扩散器有效地提高了流体的静压力，并以一个主要低于扩散器最大半径的半径排出轴向流动。