公开(公告)号：US20070065276A1

公开(公告)日：2007-03-22

申请号：US11533222

申请日：2006-09-19

申请人： Michael Muller ,  Jay Robb ,  Filippo Mariani ,  Russell Houston

发明人： Michael Muller ,  Jay Robb ,  Filippo Mariani ,  Russell Houston

IPC分类号： F04D29/08

CPC分类号： F16J15/447 ,  F01D11/02 ,  F04D29/083 ,  F04D29/284 ,  F16J15/406

摘要： An impeller for a centrifugal gas compressor includes a stationary seal member that includes a plurality of seal tips. The impeller is operable to produce a flow of fluid. The impeller includes a hub having a front face and a back face. A plurality of blades extends from the front face. Each of the blades has an inducer portion and an exducer portion and cooperates with an adjacent blade and the front face to at least partially define one of a plurality of impeller channels. A portion of the flow of fluid passes through one of the impeller channels such that the flow of fluid defines a first pressure adjacent the inducer portion and a second pressure that is higher than the first pressure adjacent the exducer portion. A seal portion extends from the back face and includes a plurality of stepped surfaces. Each of the seal tips is disposed adjacent one of the stepped surfaces to define a plurality of seal points.

摘要翻译： 用于离心式气体压缩机的叶轮包括固定密封件，其包括多个密封尖端。 叶轮可操作以产生流体流。 叶轮包括具有正面和背面的轮毂。 多个叶片从前表面延伸。 每个叶片具有导流部分和传播部分，并且与邻近的叶片和前表面配合以至少部分地限定多个叶轮通道中的一个。 流体流的一部分通过叶轮通道中的一个，使得流体流动限定了邻近诱导部分的第一压力，并且第二压力高于邻近传播部分的第一压力。 密封部分从后表面延伸并且包括多个台阶表面。 每个密封尖端邻近一个台阶表面设置以限定多个密封点。