Noise-Reducing Baffle Arrangement for Machine Cabinet
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
A cabinet for an office machine houses noisy electromechanical components in a lower chamber and stationary electrical components in an upper chamber. Both chambers must be cooled by forced airflow through the cabinet from the surrounding atmosphere. To reduce noise reaching the surroundings of the machine, a louvered outlet grille for the exit air is screened from the interior by a spaced baffle plate. Greater noise reduction is achieved by segregating the airflow from the two chambers to flow around upper and lower portions of the baffle, respectively. As shown in the drawing, the cabinet is divided into upper and lower chambers by a shelf 8 and foam seal 9. The machine cover 10 has an exit grille 11 which is louvered at about 15Œ.