A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
A47L 9/16 (2006.01) B04C 5/26 (2006.01) B04C 11/00 (2006.01)
Patent
CA 2209071
The invention provides a shroud (10; 40) for use in apparatus incorporating cyclonic dust separation means for separating dirt and dust from an airflow, the shroud (10; 40) comprising a perforated portion (14; 44) having a multiplicity of perforations (30; 46) for allowing the airflow to pass therethrough. According to invention, the perforated portion (14) has a lower edge (16) and a lip (18) depending therefrom, the lip (18) comprising a parallel-sided portion (34) having an inclined distal end and a step (38) formed radially inwardly of the parallel-sided portion (34) and at the proximal end thereof. The invention improves performance of the dust separation apparatus in conjunction with which the shroud (10; 40) is utilised.
L'invention concerne une enveloppe (10; 40) destinée à un appareil comprenant un moyen de séparation du type cyclone pour séparer les poussières et d'autres impuretés contenues dans un flux d'air, l'enveloppe (10; 40) ayant une portion perforée (14; 44) avec une multitude de perforations (30; 46) pour permettre le passage de l'air. Selon l'invention, la portion perforée (14) a un bord inférieur (16) et une lèvre (18) descendant de celui-ci, la lèvre (18) comprenant une portion (34) à côtés parallèles ayant une extrémité distale en biais et un épaulement (38) formé radialement vers l'intérieur à l'extrémité proximale de la portion (34) à côtés parallèles. L'invention permet d'améliorer l'efficacité du séparateur de poussières utilisé avec l'enveloppe (10; 40).
Marks & Clerk
Notetry Limited
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