Vacuum pump for a motor vehicle

Abstract

The invention relates to a vacuum pump ( 1 ) for a motor vehicle, comprising a pump housing surface ( 8 ), on which a noise reduction hood ( 30 ) delimiting a sound damping volume is mounted. The invention is characterized in that the noise reduction hood ( 30 ), on at least one inner surface facing the pump housing surface ( 8 ), has a three-dimensional sound dissipation structure ( 60 ).

1 - 15 . (canceled) 
     
     
         16 . A vacuum pump for a motor vehicle having a pump housing face to which an acoustic enclosure is attached and which delimits a sound damping volume, wherein the acoustic enclosure has a three-dimensional sound dissipation structure on at least one inner face which faces the pump housing face. 
     
     
         17 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein the sound dissipation structure comprises a honeycomb structure. 
     
     
         18 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein the sound dissipation structure has a multiplicity of depressions. 
     
     
         19 . The vacuum pump for a motor vehicle as claimed in  claim 18 , wherein the depressions have a polygonal, in particular a hexagonal, outline. 
     
     
         20 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein at least one damping body made from a sound damping material and which does not extend into or extends only partially into the sound dissipation structure is arranged in the sound damping volume. 
     
     
         21 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein the acoustic enclosure is configured in a pot-like manner with a circular cylindrical shell-like main body and an outwardly domed bottom. 
     
     
         22 . The vacuum pump for a motor vehicle as claimed in  claim 21 , wherein the sound dissipation structure is configured on the inside of the outwardly domed bottom of the acoustic enclosure. 
     
     
         23 . The vacuum pump for a motor vehicle as claimed in  claim 21 , wherein the sound dissipation structural elements are configured on the inside of the circular cylindrical shell-like main body of the acoustic enclosure. 
     
     
         24 . The vacuum pump for a motor vehicle as claimed in  claim 21 , wherein the circular cylindrical shell-like main body of the acoustic enclosure has reinforcing ribs on the outside. 
     
     
         25 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein the acoustic enclosure has an outlet opening. 
     
     
         26 . The vacuum pump for a motor vehicle as claimed in  claim 25 , wherein the acoustic enclosure has a supporting structure on the outside, and wherein the supporting structure surrounds the outlet opening. 
     
     
         27 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein the acoustic enclosure has a circumferential edge which is angled away in a flange-like manner. 
     
     
         28 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein the acoustic enclosure is formed in one piece from a plastic material. 
     
     
         29 . The vacuum pump for a motor vehicle as claimed in  claim 16 , wherein the acoustic enclosure is formed from a fiber-reinforced polyamide material. 
     
     
         30 . An acoustic enclosure for a vacuum pump for a motor vehicle including a three-dimensional sound dissipation structure having on at least one inner face which faces a pump housing face of the vacuum pump.