Gas expansion silencer
AssigneeBertin Technologies
InventorClaude Friou
Life of this patent
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Abstract
A gas expansion silencer comprising an endpiece for being connected to a source of gas under pressure, and a low-pressure stage comprising two cylindrical portions respectively of smaller diameter and of larger diameter, the smaller-diameter portion being connected to the endpiece and the larger-diameter portion having gas outlet orifices, the low-pressure stage being entirely filled with a porous metal packing.
Claims10
A gas expansion silencer comprising a tubular endpiece for connection to a supply of gas under pressure flowing subsonically, and a low-pressure stage having one end communicating with the endpiece via a series of inlet holes for gas flow at sonic speed and having an opposite end with orifices for gas outlet at subsonic speed, the low-pressure stage being filled entirely with porous metal packing, the low-pressure stage comprising at least two cylindrical portions of different diameters connected axially end to end and communicating with one another, the smaller-diameter portion being connected to the above-mentioned endpiece and the larger-diameter portion including the gas outlet orifices, said cylindrical portions being of axial lengths that are determined so that the end of the smaller-diameter portion which is connected to the end of the larger-diameter portion constitutes a screen between the inlet holes and the outlet orifices.
Dependencies are inferred from the claim text.