Patent ID: 6382931
Filing Date: 2002-05-07
Classification: F02M,F04C

Abstract:
An oxygen concentrator system comprising:a compressor having an inlet adapted to receive a flow of gas from an ambient environment and an outlet; a molecular sieve assembly operatively coupled to the outlet of the compressor, wherein the molecular sieve assembly separates the flow of gas from the compressor into components including a concentrated gas, and wherein the molecular sieve assembly has an outlet that provides a flow of the concentrated gas to a user; and a muffler assembly having an intake port and an outlet port, wherein the outlet port is operatively coupled to the inlet of the compressor, and wherein the intake port is adapted to receive the flow of gas from the ambient environment for subsequent compression by the compressor, the muffler assembly comprising: an intake conduit having a hollow interior adapted to receive a flow of gas from an ambient environment, and a baffle disposed in the hollow interior of the intake conduit for restricting the flow of gas through the intake conduit, wherein the baffle defines at least a portion of a first plurality of fluid portals that separate the first flow of gas into a plurality of flows of gas as such gas passes from a first side of the baffle to a second side of the baffle, thereby disturbing the first flow of gas for attenuating noise.