Axial-radial turbomachine

Abstract

Axial-radial flow machine having an axial portion with at least one axial stage, a radial portion with at least one radial stage, a housing having an interior space with a dividing wall extending in a radial direction dividing the housing in an axial direction into a first partial space in which the axial portion is received and a second partial space in which the radial portion is received, and a shaft that extends in axial direction through the interior space and through the dividing wall and on which impellers of the axial portion and of the radial portion are received. A radial gap is formed between the dividing wall and a fluid guiding element of the radial portion. The fluid guiding element is axially fixed to the housing so as to be adjacent to the dividing wall. A plurality of fixing units which are distributed in circumferential direction are arranged in the radial gap, each of which fixing units axially fixes the dividing wall to the fluid guiding element.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This is a U.S. national stage of application No. PCT / DE2010 / 050030, filed on 25 May 2010. Priority is claimed on German, Application No. 10 2009 029 647.6, filed 21 Sep. 2009, the content of which is incorporated here by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention is directed to an axial-radial flow machine having an axial portion including at least one axial stage and a radial portion including at least one radial stage.[0004]2. Detailed Description of Prior Art[0005]An axial-radial flow machine I as that shown in FIG. 1 has an axial portion 10 including a plurality of axial stages 11, a radial portion 20 including a plurality of radial stages 21, a housing 30 having an interior space which, by a dividing wall 40 extending in a radial direction RR of the housing 30, is divided in an axial direction AR of the housing 30 into a first partial space 31 in which the axial portion 10 is received and a...

AI Technical Summary

Benefits of technology

The patent is about an improved design for an axial-radial flow machine that reduces the weight and makes the machine more compact. This is achieved by using a thinner dividing wall that can withstand higher pressures without deformation. The wall is fixed to the fluid guiding element using multiple fixing units, which ensures the wall is protected against excessive deformations. The reduced weight and axial spacing of the rotary bearings allows for a more compact machine. The invention also provides a simple method of fixing the dividing wall to the fluid guiding element, which ensures reliable absorption of forces acting on the wall.

Problems solved by technology

It can easily be seen that a wall thickness increased in this way considerably increases material costs and the weight of the axial-radial flow machine 1.

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