Gas separation – With gas flow effecting means – Impeller upstream of separating media
Patent
1988-05-10
1989-05-23
Nozick, Bernard
Gas separation
With gas flow effecting means
Impeller upstream of separating media
553852, 55DIG29, 55DIG18, 981153, B01D 4600
Patent
active
048327174
ABSTRACT:
A clean air cabinet is disclosed including a cabinet shell defining a cabinet interior. Internal walls including a ceiling, back wall and floor are disposed within the interior and define a work area. A first plenum connects a blower outlet with air passages formed through the ceiling. A first high efficiency particulate air (HEPA) filter is disposed within the first plenum. A second air plenum connects air passages formed in the floor with a blower inlet. A third plenum connects air passages formed in the work area back wall with an exhaust opening formed through the cabinet shell. A second HEPA filter is disposed within the third plenum.
REFERENCES:
patent: 3229611 (1966-01-01), Berger
patent: 3944405 (1976-03-01), Calsteren et al.
patent: 4548627 (1985-10-01), Landy
Standard Number 49 Class II (Laminar Flow) Biohazard Cabinetry of the National Sanitation Foundation brochure (5/83).
Nozick Bernard
Nu Aire, Inc.
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