Improved dust separation apparatus

B - Operations – Transporting – 04 – C

Patent

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Details

B04C 5/185 (2006.01) A47L 9/16 (2006.01)

Patent

CA 2221498

The invention provides apparatus for separating dirt and dust from an airflow comprising a frustoconical cyclone having a tangential air inlet located at or adjacent the end of the cyclone having the larger diameter and a cone opening located at the end of the cyclone having a smaller diameter. A collector is arranged so as to surround the cone opening and has a base surface facing towards the cone opening. According to the invention, at least a portion of the base surface is conical or frustoconical in shape and dust- retaining means are provided spaced from the centre of the base surface. This allows the apparatus to be reduced in size without substantially affecting the separation efficiency.

La présente invention concerne un appareil (10) permettant de séparer d'un flux d'air la saleté ou la poussière. Cet appareil est constitué d'un cyclone tronconique (12) pourvu, d'une part d'une admission d'air (16) tangentielle située au niveau de ou à proximité de l'extrémité de grand diamètre du cyclone (12), et d'autre part d'un orifice de cône (18) situé à l'extrémité de petit diamètre du cyclone (12). Un collecteur (20) disposé de façon à entourer l'ouverture (18) du cône présente une surface de base (24) orientée vers l'ouverture (18) du cône. Selon la présente invention, au moins une partie (24a) de la surface de base (24') est de forme conique ou tronconique, et des organes (30) de retenue de la poussière sont disposés à l'écart du centre de la surface de base. Cet agencement permet de réduire la taille de l'appareil (10) sans que cela n'affecte sensiblement son pouvoir de séparation.

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