A cleaning system comprising a vacuum source, a current sensor, a recovery tank having a shutoff float configured to float on a surface of fluid within the recovery tank, and a controller. The vacuum source is in fluid communication with a suction inlet via first and second air paths within the recovery tank. The shutoff float is further configured to block the first air path upon the fluid within the recovery tank reaching a desired level. The controller is configured to receive, from the current sensor, a signal indicative of the current drawn by the vacuum source. The controller is further configured to determine, based on the current drawn by the vacuum source crossing a threshold, the fluid within the recovery tank has reached the desired level and control an operating element of the cleaning system upon determining the fluid within the recovery tank has reached the desired level.

Vacuum cleaner consisting of a dust container (1) and filters (2) within this, and above these a control space (3) for air and in the control space control housings (3a, 3b, 3c, 3d) and above these the central housing (4) and the underpressure space, and above this the suction unit (5) and the suction unit engine (6), all the units (1, 3, 4, 5) being in mutual communication. The control space (3) contains control valves (7, 8) for the air flow, by means of which, in normal use, the air flow is directed through the suction opening (9) in the dust container (1) to the exhaust air opening (10) in the suction unit (5) (arrows 9a, 9b, 9c) and the control valves comprise closing means, which, by opening the valve (7a) to the outside air and by closing the valve (8a) directs the air flow in the dust container in the filter under underpressure partly from the normal flow direction (9a, 9b, 9c) to the opposite flow direction (11).

A vacuum cleaner that includes a suction source configured to generate a suction airflow, a dirt collector in fluid communication with the suction source and configured to separate debris from the suction airflow and the dirt collector is configured to store the debris separated from the suction airflow. The vacuum further includes an infrared sensor operable to output a signal corresponding to a distance to an amount of debris stored in the dirt collector, a controller that receives the signal, and the controller is operable to determine a fill level stored in the dirt collector based on the signal. A visual display displays the fill level stored in the dirt collector.

A combination of a floor cleaner and a cleaning tray. At least a portion of a base of the floor cleaner is received by a reservoir of the cleaning tray. The floor cleaner further including an upright portion movable between an inclined use position and an upright storage position. The brushroll is powered by a brushroll motor. The brushroll motor includes a control circuit that controls the brushroll. The control circuit has a first switch that is open when the floor cleaner is in the upright position and closed when the floor cleaner is in the inclined use position. The second switch is in parallel with the first switch. The second switch is opened in response to the portion of the base being removed from the cleaning tray and the second switch is closed when the portion of the base is in the cleaning tray.

Provided is a method, performed by a cordless vacuum cleaner, of automatically adjusting the strength of a suction power of a suction motor. More specifically, the method may include obtaining data about a flow path pressure measured by a pressure sensor, obtaining data related to a load of the brush apparatus through a load detection sensor, identifying a current usage environment state of the brush apparatus by applying the data related to the flow path pressure and the data related to the load of the brush apparatus to an AI model stored in a memory of the cordless vacuum cleaner, and adjusting the strength of the suction power of the suction motor, based on the identified current usage environment state of the brush apparatus.

An evacuation station for collecting debris from a cleaning robot includes a controller configured to execute instructions to perform one or more operations. The one or more operations includes initiating an evacuation operation such that an air mover draws air containing debris from the cleaning robot, through an intake of the evacuation station, and through a canister of the evacuation station and such that a receptacle received by the evacuation station receives at least a portion of the debris drawn from the cleaning robot. The one or more operations includes ceasing the evacuation operation in response to a pressure value being within a range. The pressure value is determined based at least in part on data indicative of an air pressure, and the range is set based at least in part on a number of evacuation operations initiated before the evacuation operation.

A mobile robot includes a body configured to traverse a surface and to receive debris from the surface, and a debris bin within the body. The debris bin includes a chamber to hold the debris received by the mobile robot, an exhaust port through which the debris exits the debris bin; and a door unit over the exhaust port. The door unit includes a flap configured to move, in response to air pressure at the exhaust port, between a closed position to cover the exhaust port and an open position to open a path between the chamber and the exhaust port. The door unit, including the flap in the open position and in the closed position, is within an exterior surface of the mobile robot.

A backpack dust collector includes a housing and a filter. The housing includes a suction port, a dust collecting chamber connected to the suction port and accommodating a dust collecting bag, a motor chamber connected to the dust collecting chamber and accommodating a fan and a motor, and an exhaust port through which air from the motor chamber is discharged. The filter is disposed on a side of the dust collecting chamber so as to face the dust collecting chamber.

A bag-based filtering device for collecting debris from a cleaning robot via a debris evacuation station includes a filter bag configured to separate at least the portion of the evacuated debris from a flow of air generated by the evacuation station. The filtering device includes a conduit extending inward from an opening of the filter bag into the receptacle. The conduit is configured to pneumatically connect a receptacle of the filtering device with an inlet of the filtering device to direct the flow of air generated by the evacuation station through the filter bag to separate at least the portion of the evacuated debris from the flow of air.

A vacuum cleaner including a main body; a suction head including a suction port through which debris is sucked up; a brush configured to rotate in the suction head; a brush motor configured to rotate the brush; a suction motor configured to generate suction force so that debris is sucked up through the suction port; a pressure sensor configured to measure atmospheric pressure and pressure at the suction port; and at least one processor configured to determine suction pressure based on the measured atmospheric pressure and the measured pressure at the suction port, and determine cleaner state information, including at least one of operation state information and information of a type of surface to be cleaned, based on the determined suction pressure and a load of the brush motor.