A Method for cleaning air in a room (1) with a ceiling (3) and a floor (5), comprising moving an ionization unit (13) above the floor (5) along a support structure provided at a distance to the floor (5); and electrically charging particles in the air by the ionization unit (13).

A handheld air purifier may include a suction body provided with a fan to suction air and a filter to filter foreign matter from the sucked air, a handle extending from the suction body, and an agitator provided in the suction body to loosen or scatter dust from a garment. The handheld air purifier may be configured to be attached to and detached from a main air purifier, and the main air purifier may suction dust off the handheld air purifier and sterilize the handheld air purifier when the handheld air purifier is mounted on the main air purifier. The agitator of the handheld air purifier may have a striking member exposed through a lower surface of the suction body, and may move out of and into the suction body to strike the garment so that the dust may be loosened and suctioned into the suction body and filtered by the filter.

A control method of a dishwasher that includes at least two flow paths having different flow rates, a chamber having communication holes that each communicate with a respective flow path, a water supply pump configured to supply washing water to the chamber through an impeller rotated by a motor, and a flow path switching unit located within the chamber and configured to sequentially open the communication holes is described. The control method includes the actions of measuring an amount of current supplied to the motor while the motor rotates the impeller to supply washing water to the chamber, and determining a position of the flow path switching unit by comparing the amount of current supplied to the motor with reference current amounts that are each designated as an amount of current supplied to the motor when the motor rotates the impeller to supply washing water to the respective flow path.

An autonomous cleaning robot includes a drive system to move the autonomous cleaning robot about a floor surface in a space, a cleaning system to clean a floor surface in the space as the drive system moves the autonomous cleaning robot about the floor surface, and a controller configured to execute instructions to perform one or more operations. The one or more operations include initiating a cleaning mission to clean the floor surface in the space, and transmitting a signal to control an operation of an air purifier remote from the autonomous cleaning robot as the autonomous cleaning robot performs the cleaning mission

An autonomous cleaning robot includes a drive system to move the autonomous cleaning robot about a floor surface in a space, a cleaning system to clean a floor surface in the space as the drive system moves the autonomous cleaning robot about the floor surface, and a controller configured to execute instructions to perform one or more operations. The one or more operations include initiating a cleaning mission to clean the floor surface in the space, and transmitting a signal to control an operation of an air purifier remote from the autonomous cleaning robot as the autonomous cleaning robot performs the cleaning mission

Described is related to a dual function robotic cleaning device for removing harmful chemical pollutants, viruses, unpleasant odors as well as particulates from indoor air in addition to cleaning dust and debris from the ground or floors. The device has a floor cleaning unit and an indoor air purification unit integrated in the same body which can operate automatically according to indoor air pollution levels as well as by a user's instructions. The air purification unit consists of a virus zapping filter for eliminating airborne viruses, a chemical and odor filter for removing toxic chemical pollutants and unpleasant odors, a particulate filter for trapping PM2.5, and a chemical sensor for detecting chemical pollutant levels in indoor air, which feeds pollution values to the control unit of the device to trigger the air cleaning operation.

An autonomous cleaning robot includes a drive operable to move the autonomous cleaning robot across a floor surface; a cleaning assembly configured to clean the floor surface; a receiver configured to receive an indication of cat activity in a cat box; and a controller configured to navigate the autonomous cleaning robot to the cat box to execute a cleaning mission in response to the received indication of cat activity.

An autonomous cleaning robot includes a drive operable to move the autonomous cleaning robot across a floor surface; a cleaning assembly configured to clean the floor surface; a receiver configured to receive an indication of cat activity in a cat box; and a controller configured to navigate the autonomous cleaning robot to the cat box to execute a cleaning mission in response to the received indication of cat activity.

An autonomous cleaning robot includes a drive operable to move the autonomous cleaning robot across a floor surface; a cleaning assembly configured to clean the floor surface; a receiver configured to receive an indication of cat activity in a cat box; and a controller configured to navigate the autonomous cleaning robot to the cat box to execute a cleaning mission in response to the received indication of cat activity.

An autonomous cleaning robot includes a drive operable to move the autonomous cleaning robot across a floor surface; a cleaning assembly configured to clean the floor surface; a receiver configured to receive an indication of cat activity in a cat box; and a controller configured to navigate the autonomous cleaning robot to the cat box to execute a cleaning mission in response to the received indication of cat activity.