Air filter assembly for filtering air with particulate matter

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 46/02 (2006.01) B01D 46/04 (2006.01) B01D 46/24 (2006.01)

Patent

CA 2187674

An air filter assembly for filtering air with partic- ulate matter therein is pro- vided. The air filter assembly includes a housing having an air inlet and an air outlet, and a spacer wall separating the housing into a filtering cham- ber and a clear air chamber. The spacer wall includes a first air flow aperture therein. The assembly includes a fil- ter element positioned in air flow communication with the first air flow aperture. The as- sembly also includes a Ven- turi element (70) mounted in the spacer wall first air flow aperture. The Venturi ele- ment includes a bell-mouth- shaped end portion (74) which projects into an inner clean air chamber of the first filter element. The assembly includes a pulse jet cleaning apparatus having a nozzle oriented to direct a pulse of air into the first Venturi element in a direction toward the first filter element.

Ensemble filtre à air destiné à filtrer de l'air chargé de matières particulaires, qui comprend un boîtier doté d'un orifice d'entrée d'air et d'un orifice de sortie d'air, et une paroi d'écartement séparant le boîtier en une chambre de filtrage et une chambre d'air propre. La paroi d'écartement comporte une première ouverture d'écoulement d'air. Ledit ensemble comprend un élément filtre placé dans le passage d'écoulement d'air communiquant avec la première ouverture d'écoulement d'air. Ledit ensemble comprend également un élément venturi (70) monté dans la première ouverture d'écoulement d'air de la paroi d'écartement. L'élément venturi comporte une partie (74) terminale en forme de tulipe qui fait saillie dans une chambre interne d'air propre du premier élément filtre. Ledit ensemble comprend un appareil de nettoyage à jet pulsé doté d'une buse orientée de manière à diriger une impulsion d'air dans le premier élément venturi en direction du premier élément de filtre.

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