Inlet silencer/filter for an oxygen concentrator
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United States of America Patent
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Mar 9, 2004
Grant Date -
Nov 20, 2003
app pub date -
May 17, 2002
filing date -
May 17, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved inlet silencer/filter for an oxygen concentrator includes a HEPA filter and an adjoining chamber for receiving air flow from the HEPA filter. The chamber is surrounded on one face by the HEPA filter, and by sound absorbing padding on at least 4 other faces. Air is forced from the HEPA filter, through the open chamber and then through the sound absorbing padding by a flow restrictor plate. Air flows from here through air channels and into an open chamber leading to an outlet from the air silencer/filter.
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