Device for removal of deleterious impurities from room atmospher

Details Device for removal of deleterious impurities from room atmospher Device for removal of deleterious impurities from room atmospher

1997-02-18

1998-02-10

Joyce, Harold

Ventilation

Workstation ventilator

Having inlet airway

454189, B08B 1502

Patent

active

057162689

ABSTRACT:
A device for removal of deleterious impurities from room atmosphere comprises an exhaust hood, a means for delivery of inflow air into the emission zone of deleterious impurities and incorporates slotted nozzles arranged around the perimeter of the hood and oriented towards the source of deleterious impurities, and an apparatus for distributing air from the delivery air duct to the slotted nozzles. The air-distributing apparatus has the form of a distributing chamber disposed in the central part of the hood, communicating with the delivery air duct and provided with pressure branch pipes, one per slotted nozzle, connected, each,;with the corresponding nozzle at the point equidistant from the ends of said nozzle. In a preferable embodiment the nozzles are provided with cellular attachments and the slot width "b" of each nozzle complies with the following ratio: ##EQU1## where b--nozzle width, m;

REFERENCES:
patent: 2565933 (1951-08-01), Schneible
patent: 4450756 (1984-05-01), Kling
patent: 4856419 (1989-08-01), Imai
patent: 5312296 (1994-05-01), Aalto et al.

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