Compressor And Turbocharger

Abstract

A radial compressor with a compressor rotor having moving blades and a compressor housing receiving a diffuser. The diffuser (13) delimits at least in sections a flow passage leading away from the moving blades of the compressor rotor and exclusively has support blades.

What is claimed is: 
     
         1 . A radial compressor, comprising:
 a compressor rotor having moving blades;   a diffuser that exclusively comprises a plurality of support blades and which delimits at least in sections a flow passage leading away from the moving blades of the compressor rotor; and   a compressor housing configured to receive the diffuser, wherein the diffuser.   
     
     
         2 . The radial compressor according to  claim 1 , wherein the diffuser comprises three to ten support blades distributed over its circumference. 
     
     
         3 . The radial compressor according to  claim 1 , wherein the diffuser comprises three to seven support blades distributed over its circumference. 
     
     
         4 . The radial compressor according to  claim 1 , wherein radially inner edges of each of the plurality of support blades lie on a circular contour with a diameter d3. 
     
     
         5 . The radial compressor according to  claim 4 , wherein the diameter d3, on which the radially inner edges of each of the plurality of support blades lie satisfies:
   1.2* d 2≤ d 3≤1.35* d 2,
   wherein:   d2 is an outer diameter of a compressor rotor of the radial compressor.   
     
     
         6 . The radial compressor according to  claims 1  to  5 , wherein radially outer edges of each of the plurality of support blades lie on a circular contour with a diameter d4. 
     
     
         7 . The radial compressor according to  claim 4 , wherein the diameter, on which the radially outer edges of each of the plurality of support blades lie satisfies:
   1.4* d 2≤ d 4≤1.55* d 2,
   wherein:   d2 is an outer diameter of a compressor rotor of the radial compressor.   
     
     
         8 . The radial compressor according to  claim 4 , wherein a length L of each of the plurality of support blades defined by a distance between radially inner edges and radially outer edges satisfies the following:
   0.1* d 2≤ L≤ 0.3* d 2,
   wherein:   d2 is an outer diameter of a compressor rotor of the radial compressor.   
     
     
         9 . A turbocharger, comprising:
 a turbine for expanding a first medium; and   a radial compressor for compressing a second medium utilising energy extracted in the turbine during expansion of the first medium, comprising:   a compressor rotor having moving blades;   a diffuser that exclusively comprises a plurality of support blades and which delimits at least in sections a flow passage leading away from the moving blades of the compressor rotor; and   a compressor housing configured to receive the diffuser, wherein the diffuser.