Silencers for air conditioning systems

Abstract

Silencers for air conditioning systems are provided. In an exemplary embodiment, the silencer comprises a cylindrical silencer wall having a flow axis, a first channel disposed within the cylindrical silencer wall, and a second channel disposed within the cylindrical silencer wall. The second channel communicates with the first channel in a branch-off region and a connection region. A flow cross-section of the first channel and second channel changes in a complementary manner along the flow axis.

1 . A silencer comprising:
 a cylindrical silencer wall having a flow axis;   a first channel disposed within the cylindrical silencer wall; and   a second channel disposed within the cylindrical silencer wall, wherein the second channel communicates with the first channel in a branch-off region and a connection region, and wherein a flow cross-section of the first channel and the second channel change in a complementary manner along the flow axis.   
     
     
         2 . The silencer according to  claim 1 , wherein the first and/or the second channel has a divergent section in which the flow cross-section increases along the flow axis. 
     
     
         3 . The silencer according to  claim 2 , wherein the first and/or the second channel has a convergent section in which the flow cross-section decreases along the flow axis. 
     
     
         4 . The silencer according to  claim 3 , wherein, along the flow axis, the convergent section and the divergent section are concentric. 
     
     
         5 . The silencer according to  claim 1 , wherein the first channel and the second channel are concentric. 
     
     
         6 . The silencer according to  claim 1 , further comprising a third channel disposed within the cylindrical silencer wall. 
     
     
         7 . The silencer according to  claim 1 , wherein a channel wall defines the first channel and the second channel and is smooth. 
     
     
         8 . A motor vehicle air conditioning system comprising:
 a line in a region on a low pressure side of the motor vehicle air conditioning system;   a silencer within the line, the silencer comprising:   a cylindrical silencer wall having a flow axis;   a first channel disposed within the cylindrical silencer wall; and   a second channel disposed within the cylindrical silencer wall, wherein the second channel communicates with the first channel in a branch-off region and a connection region, and wherein a flow cross-section of the first channel and the second channel change in a complementary manner along the flow axis.   
     
     
         9 . The silencer according to  claim 8 , wherein the first and/or the second channel has a divergent section in which the flow cross-section increases along the flow axis. 
     
     
         10 . The silencer according to  claim 9 , wherein the first and/or the second channel has a convergent section in which the flow cross-section decreases along the flow axis. 
     
     
         11 . The silencer according to  claim 10 , wherein, along the flow axis, the convergent section and the divergent section are concentric. 
     
     
         12 . The silencer according to  claim 8 , wherein the first channel and the second channel are concentric. 
     
     
         13 . The silencer according to  claim 8 , further comprising a third channel disposed within the cylindrical silencer wall. 
     
     
         14 . The silencer according to  claim 8 , wherein a channel wall defines the first channel and the second channel and is smooth.