Noise reducing silencer with spiral chambers for a compressor

Abstract

A noise reducing silencer for a compressor, the silencer including a housing, a spirally shaped silencer core provided in the housing and having an inlet and an outlet, a connecting element connected to the silencer core to connect the outlet of the silencer core to an inlet of a compressor. The silencer core is provided to reduce noise during operation of the compressor, where the silencer core can include two spiral chambers stacked on each other. The spiral chambers can also include hollow walls that form the spiral chambers and that are filled with sound absorbing material.

1 . A noise reducing silencer for a compressor, said silencer comprising:
 a housing; and   a spirally shaped silencer core provided in the housing and having a core inlet and a core outlet, wherein the silencer core comprises two spiral chambers that are stacked on each other.   
     
     
         2 . The silencer according to  claim 1 , further comprising end seals, wherein the housing comprises a base and a cover enclosing the housing and the end seals are provided to seal the spiral chambers from the base and the cover, respectively; and said silencer further comprising a connecting element configured to connect the outlet of the silencer core to an air inlet of the compressor. 
     
     
         3 . The silencer according to  claim 2 , further comprising a filter element and a filter screen configured in a way to support the filter element, wherein said filter element and filter screen are provided circumferentially around an outer side of at least one of the spiral chambers within the housing. 
     
     
         4 . The silencer according to  claim 1 , wherein the spiral chambers are coated with a sound absorbing material. 
     
     
         5 . The silencer according to  claim 1 , wherein the spiral chambers comprise at least two windings. 
     
     
         6 . The silencer according to  claim 1 , wherein the spiral chambers comprise hollow walls forming the spiral chambers which are filled with sound absorbing material. 
     
     
         7 . The silencer according to  claim 1 , further comprising a filter element and a filter support configured in a way to support the filter element, wherein said filter element and filter support are provided at an out flow side of the core outlet. 
     
     
         8 . The silencer according to  claim 1 , wherein the spirally shaped silencer core comprises composite material. 
     
     
         9 . The silencer according to  claim 1 , wherein the housing comprises a base and a cover for enclosing the housing, and wherein said housing comprises at least one opening for an inlet airflow. 
     
     
         10 . The silencer according to  claim 1 , wherein the inlet of the silencer core is provided centrally in a first spiral chamber of the spiral chambers and wherein the outlet of the silencer core is provided centrally in a second spiral chamber of the spiral chambers. 
     
     
         11 . The silencer according to  claim 10 , wherein an outlet of the first spiral chamber is provided as a lateral outlet along an outer surface of the first spiral chamber and an inlet of the second spiral chamber is provided as a lateral inlet along an outer surface of the second spiral chamber. 
     
     
         12 . A compressor installation comprising:
 a motor;   a compressor element;   and a noise reducing silencer connected to an air inlet of the compressor element, said silencer comprising a housing, a spirally shaped silencer core provided in the housing, and a connecting element that connects the outlet of the silencer core to the air inlet of the compressor element, said silencer core comprising spiral chambers that are stacked on each other, each having an inlet and an outlet,   wherein the silencer core is configured in a way to reduce noise generated from a gas entering into the compressor during operation.   
     
     
         13 . The compressor installation according to  claim 12 , wherein the compressor is a reciprocating compressor, and the gas is air. 
     
     
         14 . The compressor according to  claim 12 , wherein the spiral chambers comprise hollow walls filled with sound absorbing material. 
     
     
         15 . A noise reducer for a compressor, said noise reducer comprising:
 a housing;   a noise reducer core provided in the housing, said reducer core comprising a first spiral chamber configured to guide an air flow from the interior of the first spiral chamber to the exterior of the first spiral chamber.   
     
     
         16 . The noise reducer according to  claim 15 , wherein said reducer core further comprises a second spiral chamber configured to guide an air flow from the exterior of the second spiral chamber to the interior of the second spiral chamber. 
     
     
         17 . The noise reducer according to  claim 16 , further comprising a filtering element and said reducer configured to guide an air flow through said filtering element. 
     
     
         18 . The noise reducer according to  claim 17 , further comprising a support that abuts said first spiral chamber, said second spiral chamber, and said filtering element within said housing. 
     
     
         19 . The silencer according to  claim 1 , wherein the spirally shaped silencer core is configured to reduce noise generated at the core inlet and reduce the air flow restriction to the compressor during operation. 
     
     
         20 . The noise reducer according to  claim 15 , wherein the reducer core is configured to reduce noise generated at an inlet of the reducer core and reduce the air flow restriction to the compressor during operation.