Cyclone such as for use in a surface cleaning apparatus

摘要

A cyclone comprises a cyclone chamber having an air inlet, a vortex finder, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, the vortex finder has a wall that meets one of the first and second end walls at a second juncture, wherein the second juncture extends at an angle to both the wall of the vortex finder and the end wall on which the vortex finder is provided.

主权项

1. A cyclone comprising a cyclone chamber having an air inlet, a vortex finder, a first end wall, a second end wall spaced from and facing the first end wall and a sidewall, wherein a distance from an inner surface of the first end wall to an inner surface of the second end wall is constant around the inner surface of the first end wall, the air inlet comprises a curved passage provided inside the cyclone chamber, the passage has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture surface of the sidewall and the first end wall and is located on the first end wall, the vortex finder has a wall that meets the first end wall at a second juncture surface, wherein the second juncture surface extends at an angle to both the wall of the vortex finder and the first end wall and wherein the air inlet comprises an enclosed passage in the cyclone chamber that is spaced from the vortex finder such that a portion of the inner surface of the first end wall extends around all of the vortex finder such that the portion of the inner surface of the first end wall is also positioned between the air inlet and the vortex finder.