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Radial compressor impeller and associated radial compressor

a radial compressor and impeller technology, applied in the direction of radial flow pumps, non-positive displacement fluid engines, pump components, etc., can solve the problems of inability to meet the requirements of radial compressor impeller pressur

Inactive Publication Date: 2017-10-05
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a new design of a radial compressor impeller that reduces interactions between the impeller flow and the flow at the sides of the impeller, resulting in increased efficiency of the stage. This is achieved by a design where the blades of the impeller are "shortened" and have a reduced thickness only in the region of the end portions. The end portions also have a rounded edge to minimize pressure losses and wake depressions. This new design has been shown to reduce mixture losses and increase the efficiency of the radial compressor.

Problems solved by technology

Pressure losses occur in the wake depression in the region of the rotating trailing edge of an impeller blade and this causes displacement and constriction effects in the flow at the impeller outlet as a result of gas flowing from the sides of the impeller into the impeller flow.
The pressure increase of the radial compressor impeller is thereby undesirably reduced.

Method used

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  • Radial compressor impeller and associated radial compressor
  • Radial compressor impeller and associated radial compressor
  • Radial compressor impeller and associated radial compressor

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Embodiment Construction

[0028]The view in section in FIG. 1 shows part of a radial compressor impeller 1 which comprises a wheel disk 2 which is fastened on a shaft (not shown). The radial compressor impeller 1 additionally comprises a cover disk 3 spaced apart from the wheel disk 2. Blades 4, arranged distributed around the circumference, are arranged in the space between the wheel disk 2 and the cover disk 3. The radial compressor impeller 1 is surrounded externally by a housing 5 which is shown only partially in FIG. 1. When the radial compressor impeller 1, fastened on a shaft, is set in rotation, a gas which flows in axially in the direction shown by an arrow 6 can be accelerated and hence compressed radially and circumferentially. The gas passes over the radial compressor impeller 1 and flows into a flow duct 7 formed in the housing 5.

[0029]FIG. 2 is a view in section of the radial compressor impeller 1 in FIG. 1 along the line II-II. In FIG. 2, only the section through the blade 4 and a part of the ...

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PUM

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Abstract

A radial compressor impeller having a wheel disc, a cover disc arranged at a distance from the wheel disc, and blades arranged therebetween and connecting the wheel disc and the cover disc. The blades have an end portion, which is arranged at a distance from the radial outer end of the wheel disc and the cover disc towards the inside and has a reduced thickness with respect to an adjoining section.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is the US National Stage of International Application No. PCT / EP2015 / 071174 filed Sep. 16, 2015, and claims the benefit thereof. The International Application claims the benefit of German Application No. DE 102014219058.4 filed Sep 22, 2014. All of the applications are incorporated by reference herein in their entirety.FIELD OF INVENTION[0002]The invention relates to a radial compressor impeller with a wheel disk, a cover disk spaced apart from said wheel disk, and blades arranged therebetween and connecting the wheel disk and the cover disk.BACKGROUND OF INVENTION[0003]Impellers of this type are used, for example, in compressors or ventilators.[0004]The wheel disk of such a radial compressor impeller has blades which are, for example, milled from solid material, and a cover disk is then fastened onto the blades, thereby forming the radial compressor impeller.[0005]A conventional radial compressor impeller is arranged on ...

Claims

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Application Information

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IPC IPC(8): F04D29/30F04D17/10F04D29/28
CPCF04D29/30F04D17/10F04D29/284F05D2240/304
Inventor JONEN, WERNER
Owner SIEMENS AG