Vertical laminar flow filter module

Details Vertical laminar flow filter module Vertical laminar flow filter module

1982-01-19

1984-01-24

Lacey, David L.

Gas separation

With ground support means

55385A, 55470, 55472, 55483, 55484, 55DIG18, 55DIG29, 98 40N, 98 41AV, 98115LH, B01D 4610, F23J 1100

Patent

active

044274270

ABSTRACT:
A module for providing a work area in which one or several people can perform tasks requiring ultra-high efficiency air filtration. The work area is bounded above by a filter module through which a vertical laminar flow of air occurs from one or more HEPA filters. From the perimeter of the module flows a curtain of air in an enclosing and substantially parallel relationship to the laminar flow air to extend the laminar air zone to the floor. The air curtain also passes through a HEPA filter prior to discharge. The angular direction of the air curtain is adjustably controlled by a unique nozzle structure so that when the air curtain contacts the floor turbulence is substantially eliminated and a sweeping action away from the work area is effected. Separate blower systems supply air for the laminar flow air and the enclosing air curtain at differential velocities.

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