公开(公告)号：US3860360A

公开(公告)日：1975-01-14

申请号：US39435673

申请日：1973-09-04

Applicant: GEN MOTORS CORP

Inventor： YU MASON K

IPC: F04D29/44 ,  F01D1/02 ,  F01D1/06 ,  F01D9/04

CPC classification number: F04D29/441

Abstract: A diffuser for a centrifugal compressor has a body defining diffusing passages extending tangentially and radially from an annular space around the circumference of the compressor impeller. These passages diverge in the direction of flow and trend smoothly in cross-section from rectangular at the inlet to circular at the outlet in the preferred case. The cross-section of the passage follows the relation X/A S + Y/b s 1, WHERE X AND Y ARE COORDINATES, A AND B ARE WIDTH AND DEPTH PARAMETERS, AND S IS A SHAPE FACTOR WHICH VARIES PROGRESSIVELY ALONG THE DIFFUSING PASSAGE FROM NEAR INFINITY AT THE INLET TO PREFERABLY 2 AT THE OUTLET.

Abstract translation: 用于离心式压缩机的扩散器具有限定从围绕压缩机叶轮的圆周的环形空间切向和径向延伸的扩散通道的主体。 这些通道在流动方向上发散，并且在优选情况下在出口处从入口处的矩形到出口处的横截面趋于平滑。 通道的横截面遵循关系| X / A|S + | Y / b|s = 1，其中X和Y为坐标，A和B为宽度和深度参数，S为各种形状因子 在入口处从入口附近进入扩展通道，优先于出口2。

公开(公告)号：US3625003A

公开(公告)日：1971-12-07

申请号：US3625003D

申请日：1970-09-08

Applicant: GEN MOTORS CORP

Inventor： LIDDLE SIDNEY G ,  YU MASON K

IPC: F02C7/057 ,  F02C9/54 ,  F04D29/46 ,  F02C9/14 ,  F02G3/00

CPC classification number: F02C9/54 ,  F02C7/057 ,  F04D29/464

Abstract: A GAS TURBINE ENGINE HAS A DOBULE-ENTRY CENTRIFUGAL COMPRESSOR, COMBUSTION APPARATUS SUPPLIED BY THE COMPRESSOR, AND A TURBINE HAVING VARIABLE NOZZLE AREA SUPPLIED FROM THE COMBUSTION APPARATUS AND DRIVING THE COMPRESSOR. THE TURBINE MAY DRIVE THE LOAD OR A SECOND POWER TURBINE IN SERIES WITH THE COMPRESSOR DRIVING TURBINE MAY BE PROVIDED. A REGENATOR TO EXCHANGE HEAT BETWEEN TURBINE EXHAUST AND COMPRESSED AIR IS PREFERABLY PROVIDED. ONE SIDE OF THE DOUBLE-ENTRY COMPRESSOR IS PROVIDED WITH A SHUT OFF VALVE WHICH CLOSES THE ENTRANCE TO THIS SIDE FOR OPERATION AT IDLING AND UNDER LIGHT LOADS. THE VALVE IS OPENED COMPLETELY FOR HIGHER POWER OUTPUT OF THE ENGINE.