A vacuum cleaner including a dirty air inlet, a fluid flow path extending from the dirty air inlet to a clean air outlet, a fluid flow motor positioned in the fluid flow path, and a filter assembly positioned in the fluid flow path. The filter assembly including a first cylindrical filter and a second cylindrical filter nested within and removable from the first cylindrical filter. An inner diameter of the first cylindrical filter is smaller than an outer diameter of the second cylindrical filter such that the second cylindrical filter is compressed in order to be nested within the first cylindrical filter.

A cleaner includes: a suction unit; a suction motor that generates suction force for sucking air through the suction unit and includes an impeller; a dust separation unit that includes one or more cyclone units generating cyclonic flow to separate dust from air flowing inside through the suction unit; a dust container that stores dust separated by the dust separation unit and is disposed under the suction motor; a battery disposed behind the dust container to supply power to the suction motor; and a handle disposed behind the suction motor, wherein a rotational axis of the impeller and an axis of the cyclonic flow vertically extend and an extension line from the rotational axis of the impeller passes through the one or more cyclone units.

A hand vacuum cleaner has a cyclonic stage which comprises a stationary portion and an openable portion. The openable portion is rotatably mounted by a rotatable mount between a closed position in which a cyclone chamber is closed and an open position in which the cyclone chamber is open. The stationary portion comprises an upper portion of the first cyclonic stage and the openable portion comprises a lower portion of the first cyclonic stage. The rotatable mount is located at a rearward end of the openable portion.

Provided is a dust collector of a vacuum cleaner, the dust collector including a dust collecting casing including an air inlet, an air outlet, and a foreign substance discharge port, a cyclone module configured to separate foreign substances by inducing a swirling flow of air drawn in via the air inlet, and a discharge door switchable between an open position in which the foreign substance discharge port is opened and a closed position in which the foreign substance discharge port is closed, wherein the cyclone module includes a fixed part and a rotating part having a rotating state in which it is allowed to rotate with respect to the fixed part when the discharge door is in the open position and a locked state in which it is prevented from rotating with respect to the fixed part when the discharge door is in the closed position.

A vacuum cleaner has a portable cleaning unit that is removably mounted to the surface cleaning head. The vacuum cleaner is operable in a floor cleaning configuration in which the portable cleaning unit is mounted to the surface cleaning head and is part of the air flow path through the vacuum cleaner. The portable cleaning unit is also useable in a portable cleaning configuration in which the portable cleaning unit is removed from the surface cleaning head and the suction motor is powered by an energy storage member.

A surface cleaning apparatus has an air flow path from a dirty air inlet to a clean air outlet. The air flow path comprising an air inlet conduit which extends downstream from the dirty air inlet. The Surface cleaning apparatus has a first stage cyclone and a second stage cyclone downstream from the first stage cyclone, the second stage cyclone having a plurality of air inlets. The cyclone axis of rotation of the first stage cyclone extends through the air outlet of the second stage cyclone. the first stage cyclone, the second stage cyclone having a plurality of air inlets, an air outlet and a cyclone axis of rotation. A plane that is transverse to the axis of rotation of the second stage cyclone extends through the inlet conduit and the air outlet of the second stage cyclone.

A surface cleaning apparatus having an air flow path; a suction motor positioned in the air flow path; an air treatment chamber provided in the air flow path; and a porous filter provided in the air treatment chamber and including an outlet passage from the air treatment chamber. An air impermeable impact wall in the air treatment chamber is opposed to an inlet into the air treatment chamber. At least a portion of the impact wall or a deflecting portion of a wall defining part of the front end of the air treatment chamber imparts a circular flow to air entering the air treatment chamber.

A surface cleaning apparatus has first and second cleaning stages, a pre-motor filter and a suction motor. The second cleaning stage comprises at least one cyclone. The components are laterally and vertically spaced with respect to other components.

A vacuum cleaner is described. The vacuum cleaner has a dirt inlet and a motor and fan for delivering suction to the dirt inlet. A cyclone unit separates particles from a suction flow. The cyclone unit has a vortex finder extending along a cyclone axis of rotation and an annular chamber formed around outside of the vortex finder. Air is delivered to the cyclone unit in a forward direction (i.e. in a direction from the dirt inlet to the cyclone unit). The cyclone axis of rotation is substantially parallel to the forward direction. An outlet from the vortex finder is at a backward end thereof such that the outlet is in an opposite direction to a forward component. A space beyond the vortex finder is a part of a dirt collection area, thus enabling a more effective collection of hairs and other debris.

A robot cleaner comprising: a cleaner body including a wheel unit and a controller controlling driving of the wheel unit; a dust container accommodation part having a shape recessed toward the front from the rear thereof to be opened to the rear; a dust container detachably coupled to the dust container accommodation part, the dust container have a portion protruding rearward of a rear end of the cleaner body in a state in which the dust container is accommodated in the dust container accommodation part; and a dust container cover rotatably coupled to the cleaner body to cover the dust container, wherein the dust container cover is accommodated in the dust container accommodation part in a state in which the dust container cover is disposed to cover the dust container, and a portion of the dust container cover protrudes rearward of the rear end of the cleaner body.