B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/17
B01D 53/04 (2006.01) B01D 46/10 (2006.01) B01D 53/30 (2006.01) B01D 53/34 (2006.01)
Patent
CA 2019114
An apparatus for removing contaminants generated in a volume of air contained within a work structure includes a housing, an inlet aperture disposed in the housing for receiving the contaminated air generated in the structure, an outlet aperture for passing of filtered air disposed in another portion of the housing removed from the inlet aperture and a plurality of removable interchangeable filter units disposed in the housing in spaced relationship between the inlet and outlet apertures thereby forming a plurality of chambers each defined by adjacent filter units and the housing. A detector device is engaged with at least the first chamber adjacent the inlet aperture for detecting the level of concentration of contaminants in the air passing through the chamber. The apparatus also includes a fan device to direct the contaminated air from within the work structure through the inlet aperture of the housing whereby the contaminated air passes through each filter unit and intermediate detection chambers for removal of at least a portion of the contaminants, and then to direct the filtered air through the outlet aperture. In a preferred embodiment the fan device is positioned adjacent the inlet aperture for the purpose of increasing the pressure of air passing through the filter units to thereby optimize the filter capacity of the filter units.
Hauville Francois P.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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