Browse Prior Art Database

Increasing the Life of a Pneumatic Filter

IP.com Disclosure Number: IPCOM000111572D
Original Publication Date: 1994-Mar-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

De Lessio, A: AUTHOR

Abstract

Rotary vane compressors consist of a motor, hub, and a shaft or rotor. In the rotary vane compressor the rotor acts as a housing for a minimum of four or more graphite composite vanes. The rotor is offset from the hub which creates a void where the incoming air is trapped by the rotary vane. As the vane continues its rotation, the volume of the void is decreased and the trapped air is compressed and expelled from the compressor at a pressure which is greater than atmosphere.

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Increasing the Life of a Pneumatic Filter

      Rotary vane compressors consist of a motor, hub, and a shaft or
rotor.  In the rotary vane compressor the rotor acts as a housing for
a minimum of four or more graphite composite vanes.  The rotor is
offset from the hub which creates a void where the incoming air is
trapped by the rotary vane.  As the vane continues its rotation, the
volume of the void is decreased and the trapped air is compressed and
expelled from the compressor at a pressure which is greater than
atmosphere.

      As the vane of a rotary vane compressor wears, the graphite
particles from the vanes are deposited on the final filter.  In a
tape drive the final filter protects the read/write components from
contamination.  As the particles accumulate, the final filter life
decreases.

      My invention calls for a flat piece of filter media to be
placed directly under the discharge tube (outlet) of the compressor.

      The discharge air encounters the flat filter media first and as
a result of the air path turning itself up to go through the final
filter, any heavy particles are deposited on the flat filter media
and are not carried up through the final filter.  This change of air
path and the addition of the flat filter media increases the life of
the filter without making any changes to the media area or size of
the final filter.   To help prove the point, I ran an experiment
which consisted of the following:

1.  Plug the top of ...