Gas separation – With separated gas outflow control – Baffle or flow guide
Patent
1980-04-28
1982-03-16
Nozick, Bernard
Gas separation
With separated gas outflow control
Baffle or flow guide
55473, 55DIG29, 98 33R, 98 36, 98115LH, 415219C, B01D 4600
Patent
active
043198996
ABSTRACT:
A laminar flow clean air enclosure has at least two spaced apart side walls and a planar filter extending between the side walls to define a work area. A transition duct couples air between the outlet of a blower and an entrance region near one end of the filter inlet to expand air leaving the blower outlet without introducing turbulence. A plenum chamber in communication with the entrance region and substantially the entire cross-sectional area of the filter inlet is formed so as to provide air at constant velocity to substantially the entire cross section of the filter inlet. As a result, the velocity of the air leaving the blower outlet is gradually reduced without turbulence to the desired exit velocity for the air leaving the filter. A perforated screen having a planar central region and an angled peripheral region covers the filter outlet. The peripheral region presents a higher density perforations than the central region and thereby forms between the side walls an air curtain that partially defines the work region.
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Nozick Bernard
Pure Air Corporation
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