A central vacuum system with several suction hoses provided with a suction nozzle which, after having vacuumed with the suction hose concerned, must be placed in a suction nozzle holder and which, before vacuuming with the suction hose concerned, must be taken out of the suction nozzle holder. The central vacuum system includes a detection system for detecting whether a suction nozzle is either or not placed in its corresponding suction nozzle holder, as well as a control unit which is connected to the detection system. The control unit controls the suction force of the central pump installation as a function of the number of suction hoses being used.

Disclosed is a robot cleaner including a main body forming an appearance, at least one driving wheel installed on a lower portion of the main body, a driving unit configured to drive the driving wheel according to an operation of a driving motor, a first obstacle sensor positioned on the lower portion of the main body and configured to sense an obstacle on the floor, and a control unit configured to, when the sensed obstacle on the floor has a preset pattern, limit driving of the at least one driving wheel such that the at least one driving wheel is not hindered by the preset pattern when the main body rotates on the preset pattern according to driving of the at least one driving wheel.

A portable surface cleaning apparatus for a floor surface includes a main housing assembly adapted to be hand carried by a user, the main housing assembly carrying a fluid delivery system adapted for storing cleaning fluid and delivering the cleaning fluid to the surface to be cleaned, and a fluid recovery system adapted for removing the cleaning fluid and debris from the surface to be cleaned and storing the cleaning fluid and debris that was recovered, the main housing assembly comprising a base housing, a supply tank received on the main housing assembly, a recovery tank received on the main housing assembly separately from the supply tank.

A floor cleaner can include a housing adapted for movement over a surface to be cleaned and at least one edge cleaning brush provided on the housing. The edge cleaning brush includes multiple cleaning implements which rotate on different axes. A gear system, such as a planetary gear system, can drive one cleaning implement at a lower speed than another cleaning implement.

A device for covering a plurality of different sized robotic systems. The device can include a cover sized to at least partially fit over the robotic system; one or more sidewalls extended from the cover, wherein the one or more sidewalls is configured to removably engage with each of the plurality of different sized robotic systems; and one or more apertures in the cover and/or the one or more sidewalls. The one or more apertures are selectively positioned and sized so as to prevent obstructing the one or more onboard sensors of the respective robotic system when the device is in an assembled state with the respective robotic system.

A device for covering a plurality of different sized robotic systems. The device can include a cover sized to at least partially fit over the robotic system; one or more sidewalls extended from the cover, wherein the one or more sidewalls is configured to removably engage with each of the plurality of different sized robotic systems; and one or more apertures in the cover and/or the one or more sidewalls. The one or more apertures are selectively positioned and sized so as to prevent obstructing the one or more onboard sensors of the respective robotic system when the device is in an assembled state with the respective robotic system.

The present disclosure relates to a cleaner system including: a cleaner; a cleaner station; and an imaginary plane including an imaginary suction flow path through line penetrating a suction flow path in a longitudinal direction and an imaginary suction motor axis defined by extending a rotation axis of a suction motor, in which when the cleaner is coupled to the cleaner station, the plane penetrates at least a part of the cleaner station, such that a center of gravity of the cleaner is disposed to pass through a space for maintaining balance of the station, and as a result, it is possible to stably support the cleaner and the station while preventing the cleaner and the station from falling down.

The suction unit comprises: a cover having an air inlet; a noise reduction part provided in the cover, arranged outside the air inlet and spaced therefrom; an impeller for flowing the air which has passed through the noise reduction part and then the air inlet; a motor having a rotating shaft connected to the impeller; a guide apparatus for guiding the flow of the air which has flown from the exit of the impeller; and a shaft coupling part coupled to the rotating shaft connected to the impeller.

Disclosed are a dirt suction guide device and a cleaner comprising the same. The disclosed cleaner comprises: a cleaner body for generating a suction force; a flexible hose connected to the cleaner body; an extension tube connected to the flexible hose; and a dirt suction guide device separately coupled to the extension tube, wherein the dirt suction guide device comprises a body, a movable portion, which is connected to one side of the body, and which is coupled to be able to slide with regard to the body, and a connecting portion, which is connected to the other side of the body, and which connects the body to the extension tube, and the body is hinge-coupled such that the same can selectively maintain and change an angle with regard to the extension tube.

A hose clip for coupling at least a portion of a suction hose to a support structure of a vacuum cleaning apparatus may include a protrusion and a coupler. The coupler may include a coupler housing having an opening for receiving at least a portion of the protrusion. The opening may transition from an outer surface of the coupler housing into a coupler cavity defined by the coupler housing. The coupler cavity may include a plurality of jaws for engaging at least a portion of the protrusion.