Paul S Huber

US Patent:

8444397, May 21, 2013

Filed:

Sep 7, 2011

Appl. No.:

13/640748

Inventors:

Paul Nemit, Jr. - Waynesboro PA, US
Paul A. Huber - Marion PA, US

Assignee:

Johnson Controls Technology Company - Holland MI

International Classification:

F04B 39/00
F01N 13/00

US Classification:

417312, 417543, 181241

Abstract:

An attenuating apparatus for use with a positive displacement compressor. The device includes a bore formed in a housing of the compressor, the bore being positioned at an angle to a discharge chamber of the compressor and in fluid communication with the compressor discharge chamber. A plug is positioned within the bore, the plug movable within the bore to a preselected position. The plug has a first end in contact with a gas from the compressor discharge chamber and a second, opposite end being accessible from an exterior of the housing. A seal is positioned between the plug and the bore to seal an interface between the plug and the bore to prevent leakage of a gas from the compressor discharge chamber along the interface. The plug is lockable within the bore at the preselected position. The preselected position of the plug within the bore determines a bore length in fluid communication with the compressor discharge chamber, which attenuates sound from gas pulsations resulting from discharge of compressed gas from the operation of the compressor.