Surface cleaning apparatus

摘要

A hand carriable surface cleaning apparatus, such as a cyclonic hand vacuum cleaner, is provided wherein air travels in a first direction from the cyclone chamber to an upstream side of the pre-motor filter, and air travels in an opposite direction to the first direction in a portion of an air flow path extending from the pre-motor filter to the suction motor.

主权项

1. A hand carriable surface cleaning apparatus comprising:
(a) a dirty fluid inlet; (b) an air treatment member downstream of the dirty fluid inlet, the air treatment member comprising a bottom, an upper end spaced longitudinally from the bottom along an air treatment axis, an air inlet and an air outlet, the air outlet is located at the upper end; (c) a pre-motor filter positioned downstream of and longitudinally above the air treatment member and comprising at least one porous physical filter media, at least a portion of the porous physical filter media overlies the air treatment member, the porous physical filter media having an upstream side through which air enters the porous physical filter media and an opposing downstream side through which air exits the porous physical filter media; (d) a suction motor positioned downstream of the pre-motor filter and comprising a motor axis, wherein a projection of the motor axis intersects a projection of the air treatment axis; (e) an air flow path extending from a position downstream of the porous physical filter media to the suction motor wherein the air flow path has a first portion that comprises an air conduit having front and rear walls that are uninterrupted by a suction motor inlet port, the air conduit being disposed exterior to and rearwardly of the air treatment member and that extends from an upstream end to a downstream end that is located at a position that is below the upstream end and between and laterally spaced from the bottom and the upper end of the air treatment member and the suction motor inlet is in flow communication with the downstream end; and, (f) a clean air outlet downstream of the suction motor.