Radial Compressor

Abstract

A radial compressor for a turbo charger has a housing with an inflow passage and a spiral passage. A compressor wheel is supported rotatably in the housing. The housing has at least two housing parts between which a cavity is formed. At least one opening is provided in the inflow passage, wherein the at least one opening fluidically connects the cavity with the inflow passage.

1 . A radial compressor for a turbo charger, comprising:
 a housing comprising an inflow passage and a spiral passage;   a compressor wheel supported rotatably in said housing;   wherein said housing is comprised of at least two housing parts between which an acoustic dampening cavity is formed;   at least one opening provided in said inflow passage, wherein said at least one opening fluidically connects said cavity with said inflow passage.   
     
     
         2 . The radial compressor according to  claim 1 , wherein said at least two housing parts include a central housing part and wherein said inflow passage is substantially formed by an axial section of said central housing part. 
     
     
         3 . The radial compressor according to  claim 2 , wherein said axial section of said central housing part, said at least one opening is a plurality of openings. 
     
     
         4 . The radial compressor according to  claim 3 , wherein said plurality of openings are slotted holes. 
     
     
         5 . The radial compressor according to  claim 4 , wherein said slotted holes extend parallel to one another in an axial direction of said inflow passage. 
     
     
         6 . The radial compressor according to  claim 5 , wherein said plurality of openings are circular or polygonal. 
     
     
         7 . The radial compressor according to  claim 2 , wherein said cavity is annular and surrounds said axial section of said central housing part. 
     
     
         8 . The radial compressor according to  claim 7 , comprising an annular radial partition that divides said cavity into an upper subcavity and a lower subcavity each having a separate individual volume. 
     
     
         9 . The radial compressor according to  claim 2 , comprising three axial partitions that divide said cavity into three ring segment shaped subcavities that surround said axial section of said central housing part. 
     
     
         10 . The radial compressor according to  claim 1 , wherein said at least two housing parts include a central housing part and a top housing part, wherein said inflow passage is substantially formed by an axial section of said top housing part and an axial section of said central housing part. 
     
     
         11 . The radial compressor according to  claim 10 , wherein said at least one opening in said inflow passage is formed by a spacing between said axial section of said top housing part and said axial section of said central housing part. 
     
     
         12 . The radial compressor according to  claim 11 , wherein said spacing forms a slot extending in a circumferential direction of said inflow passage. 
     
     
         13 . The radial compressor according to  claim 10 , wherein said cavity is annular and surrounds said axial section of said top housing part and said axial section of said central housing part. 
     
     
         14 . The radial compressor according to  claim 13 , comprising an annular radial partition that divides said cavity into an upper subcavity and a lower subcavity each having a separate individual volume. 
     
     
         15 . The radial compressor according to  claim 9 , comprising three axial partitions that divide said cavity into three ring segment shaped subcavities that surround said axial section of said top housing part and said axial section of said central housing part. 
     
     
         16 . The radial compressor according to  claim 1 , comprising a partition that divides said cavity into two or more subcavities. 
     
     
         17 . The radial compressor according to  claim 1 , comprising at least two axial partitions that divide said cavity into several subcavities. 
     
     
         18 . The radial compressor according to  claim 1 , wherein said at least two housing parts are comprised of thermoplastic synthetic material.