A vacuum cleaner comprises a suction generator to generate an airflow, a dirt separator comprising an opening to permit the airflow to pass into the dirt separator, a filter assembly to separate dirt from the airflow, and a dirt collection chamber to collect dirt separated from the airflow, and an attachment attached to the dirt separator. The attachment comprises a housing comprising a duct to deliver the airflow to the opening of the dirt separator, and a compaction member movable between a first position in which all of the compaction member is upstream of the opening, and a second position in which the compaction member extends through the opening of the dirt separator and into the dirt collection chamber to compact dirt collected in the dirt collection chamber.

There is disclosed a vacuum cleaner station including a housing; a mounting portion disposed in the housing and comprising a coupling surface to which at least predetermined area of a vacuum cleaner is coupled; a dust collection unit accommodated within the housing and disposed below the mounting portion, the dust collection unit configured to collect dust inside a dust bin of the vacuum cleaner; and a dust collection motor accommodated within the housing and disposed below the dust collection unit, the dust collection motor configured to generate a suction force for sucking in dust inside the dust bin, and the dust collection unit may include a dust bag configured to store dust; a bag support portion configured to accommodate the dust bag; and a dust bag sensor disposed in the bag support portion and configured to sense the dust bag, so the dust bag may be discharged to the outside of the vacuum cleaner station by jointing the dust bag through the jointer when the amount of dust stored in the dust bag is a preset reference amount or more.

A surface cleaner includes a motor and fan assembly and an air treatment chamber provided in an air flow path. The air treatment chamber has an inlet end including a first end wall, an outlet end including a second end wall, a chamber air inlet provided at the inlet end, a chamber air outlet provided at the outlet end, a chamber axis extending centrally through the air treatment chamber from the first end wall to the second end wall, and a chamber sidewall extending from the inlet end to the outlet end. The chamber air outlet includes a porous wall portion provided at the outlet end and an air impermeable wall portion provided at the location of the porous wall portion. During operation, air entering the air treatment chamber is directed towards the air impermeable wall portion.

A power tool having a power tool housing, a motor, a tool moved relative to the housing by the motor, a fan rotated by the motor such that a fluid flow with debris generated by tool is moved into the fluid inlet by the fan and through the discharge outlet, and a filter that is removably attached to the power tool housing. The power tool housing includes a fluid inlet and a discharge outlet. The filter includes a filter media for separating the debris from the flow of fluid. The filter media defines a collection container for storing the debris. The filter also includes an opening through which the flow of fluid with the debris enters the collection container, and a valve that is moveable between a closed position, in which the opening is closed, and an open position, in which the opening is open. The valve includes a duckbill check valve.

A robotic cleaner including a dust cup door and door actuator. The door actuator is configured to move the dust cup door to an open position when the robotic cleaner is in a horizontal orientation to allow debris on a surface to be cleaned to be drawn into the dust cup, and to move the dust cup door to a closed position when the robotic cleaner is rotated from the horizontal orientation to a rotated orientation to substantially prevent debris in the dust cup from exiting the robotic cleaner.

A disposable container for collecting dust in a vacuum cleaner, in particular in a construction-grade vacuum cleaner, the disposable container including the following: an inlet opening , which is connectable to a suction hose connection of the vacuum cleaner; a suction opening, which is connectable to a suction device of the vacuum cleaner, the inlet opening and the suction opening being configured to be detachably connected to the vacuum cleaner.