A surface cleaning apparatus, such as a portable surface cleaning apparatus is powered by one or more ultracapacitors and a charging unit for same is provided.

A system of robotic cleaning devices and a method of a master robotic cleaning device of controlling at least one slave robotic cleaning device. The method performed by a master robotic cleaning device of controlling at least one slave robotic cleaning device includes detecting obstacles, deriving positional data from the detection of obstacles, positioning the master robotic cleaning device with respect to the detected obstacles from the derived positional data, controlling movement of the master robotic cleaning device based on the positional data, and submitting commands to the at least one slave robotic cleaning device to control a cleaning operation of said at least one slave robotic cleaning device, the commands being based on the derived positional data, wherein the cleaning operation of the slave robotic cleaning device is controlled as indicated by the submitted commands.

Provided is a robot cleaner including a main body including a suction portion disposed therein, a main wheel for moving the main body, wherein a vertical level of the main wheel varies in a vertical direction with respect to the main body, an auxiliary wheel disposed at a front portion or a rear portion of the main body, wherein a vertical level of the auxiliary wheel is fixed with respect to the main body, and a driving member assembly disposed in the main body, wherein the driving member assembly varies a vertical level of the main body from a floor face while rotating in forward and rearward directions of the main body, wherein the driving member assembly has different hitting radii when rotating forward and rearward.

An allergen reduction device may include a body, a dust cup removably coupled to the body, a plurality of agitators rotatably coupled to the body and disposed within respective agitator cavities defined in the body, a suction motor disposed within the body and configured to cause air to flow along corresponding cleaning airflow paths from the agitator cavities into the dust cup, a hot air outlet fluidly coupled to the suction motor, the suction motor being configured to urge the air through the hot air outlet along a heated exhaust airflow path, and a heater positioned within the heated exhaust airflow path between the suction motor and the hot air outlet, the heater being configured to heat the air that is urged from the hot air outlet.

A motor assembly has a motor having a rotor and a stator. An impeller is connected to a rotary shaft of the rotor and a housing is disposed between the impeller and the motor and surrounding an upper side of the motor. A diffuser discharges air, which is suctioned by the impeller, along an outer surface of the housing. A heat dissipation cover covers an outer surface of the motor. The heat dissipation cover includes an inner cover spaced apart from the outer surface of the motor and forming an inside-cover flow channel that air flows through and an outer cover having a diameter greater than that of the inner cover and forming an outside-cover flow channel through which air flows along the outer surface thereof.

A surface cleaning apparatus having an upright assembly, a power source, and a coiled electrical cable. The upright assembly including a frame and a telescoping handle at last partially extending from the frame and movable between an extended position and a contracted position. The coiled electrical cable being provided within a portion of the telescoping handle and configured to uncoil or coil when the telescoping handle is moved between the extended position and the contracted position.

A self-moving cleaning device includes: a base; a mobile module adjacent to the base and configured to contact a surface when the self-moving cleaning device moves on the surface; a vacuum module arranged over the base; a dust box arranged over the base and connected to the vacuum module, the dust box including a first opening and a second opening; a first suction port arranged on the base and including a first suction inlet connected to the first opening; a second suction port arranged on the base and including a second suction inlet connected to the second opening, the first suction port disposed between a front side of the base and the second suction port; a roller brush device arranged on the base and within the second suction port; and an air duct, wherein the first suction port is connected to the dust box through the air duct to thereby connect the first suction inlet to the first opening.

An obstacle avoidance method for a self-moving robot includes: obtaining and recording, by the self-moving robot, information about an obstacle encountered during traveling, wherein the information about the obstacle includes type information and location information of the obstacle; and receiving, by the self-moving robot, an operation instruction for a specified obstacle, wherein the operation instruction is configured for instructing the self-moving robot, when detecting an obstacle of a same type as the specified obstacle in a region range labeled with the specified obstacle, not to perform an obstacle avoidance operation on the obstacle of the same type.

Provided are a robot cleaner including: a drive part configured to apply a driving force required to drive the robot cleaner; a sensor configured to obtain at least one of information about a travel state of the robot cleaner and information about surroundings of the robot cleaner; and a controller configured to determine at least one reference trajectory on a coordinate system of a cleaning area, and to compensate for a degree to which the robot cleaner is spaced apart from the reference trajectories based on at least one of a position and an direction of the robot cleaner, which are determined based on the at least one information obtained by the sensor, and a method for controlling a travel of the robot cleaner.

A surface cleaning apparatus includes a cleaning head adapted to move over a surface to be cleaned, a housing coupled with the cleaning head, a first user interface on the housing, and a second user interface on the cleaning head. The first user interface includes at least one user input control. The second user interface includes a plurality of status indicia.