In a vacuum cleaner electric blower is driven by power supplied by a secondary battery. A dust-collector is configured to catch and collect dust and dirt sucked by driving the electric blower. A detector is configured to detect a remaining amount of the secondary battery. A controller is configured to control suction force of the electric blower. In the case cleaning is finished when the remaining amount of the secondary battery detected by the detector is equal to or less than a predetermined value, the controller sets the parameter to reduce the suction force of the electric blower for the next cleaning. In the case cleaning is finished when the remaining amount of the secondary battery detected by the detector is not equal to or less than the predetermined value, the controller sets the parameter to increase the suction force of the electric blower for the next cleaning.

The present disclosure provides a control method capable of, by using a current value of a nozzle, determining whether a nozzle is separated from a vacuum cleaner and whether the nozzle is reconnected to the vacuum cleaner after separation. To this end, a vacuum cleaner may comprise a nozzle connectable to a suction unit for suctioning dusts. The nozzle may comprise a rotary cleaning unit for applying pressure to a cleaning target surface so as to separate a foreign substance therefrom, and a nozzle motor for driving the rotary cleaning unit. In order to drive the nozzle, a voltage having been controlled by a pulse width modulation (PWM) method is applied, and a measurement unit included in the vacuum cleaner may measure a current value of the nozzle, the current value depending on the applied voltage.

A suction hose for a vacuum cleaner including a hose portion, which has a flexible dust removal hose body and a flexible jacket hose body, in which the dust removal hose body is arranged, wherein a suction flow channel for conducting a suction flow to the vacuum cleaner extends between longitudinal ends of the hose portion, which suction flow channel is bounded by a hose jacket of the dust removal hose body, a connection piece for connecting to the hand-held power tool or to the vacuum cleaner is arranged at at least one longitudinal end of the hose portion, and the jacket hose body and the dust removal hose body extend into an interior of a hose receptacle of the connection piece such that the dust removal hose body is sheathed by the jacket hose body into the hose receptacle.

A suction device (10) with a suction device housing (20), in which a suction turbine (11) for generating a suction flow (S) is arranged, the suction turbine (11) having a suction turbine inflow opening (11A), through which the suction flow (S) can flow into the suction turbine (11) and at least one suction turbine outflow opening (11B), through which the suction flow (S) can flow out of the suction turbine (11), wherein the suction device housing (20) has a suction inlet (12) for letting in the suction flow (S) and a dust collecting chamber (21) for collecting dust contained in the suction flow (S), wherein a filter element (13) for retaining dust in the dust collecting chamber (21) is arranged between the dust collecting chamber (21) and a suction turbine inflow opening (11A) of the suction turbine (11), wherein the suction device (10) has a closure element (60) with a closure body (61) for closing the suction inlet (12), which closes the suction inlet (12) in a closure position (V) and is removed from the suction inlet (12) in a release position (FS). The suction device (10) has a supply receptacle (68) for receiving the closure body (61), when the closure body (61) reaches the release position (FS).

An electric work machine according to one aspect of the present disclosure includes a motor, a first connector, a second connector, an energizing circuit, a manual switch, and a controller. The controller outputs a first control signal to the energizing circuit to electrically connect the first connector to the motor, increases an actual rotational speed of the motor at a first rate, outputs the first control signal to the energizing circuit to electrically connect the second connector to the motor, and increases the actual rotational speed at a second rate. The second rate is less than the first rate.

A vacuum cleaner to suction dust generated by a machine tool, wherein the vacuum cleaner is actuatable by an electric device in the shape of the machine tool or an energy storage module for the electric power supply of the machine tool, which has a drive motor to drive a tool holder on which a tool provided to process a workpiece is arranged or is arrangeable, wherein the vacuum cleaner has a vacuum housing with a dirt collection chamber to receive dirt separated from a suction flow and a suction unit to generate the suction flow, wherein a suction inlet is present on the vacuum housing to connect a suction hose to establish a current connection for the suction flow with the machine tool, wherein the vacuum cleaner has an external communication apparatus for a wireless control connection to a wireless communication interface of the electric device and to receive at least one control command to control, the vacuum cleaner via the control connection.

A motor cover includes a lattice structure defining a plurality of vent openings that provide ventilation of the motor cover. Each vent opening of the plurality of vent openings is defined by a first cross member, a second cross member, a first side member, and a second side member of the lattice structure. The second cross member is spaced vertically below the first cross member and the first side member is spaced horizontally forward from the second side member. Each of the first and second side members extend from the first cross member to the second cross member. The second cross member extends further outward from a central vertical axis of the motor cover than the first cross member, and the first side member extends further outward from the central longitudinal axis than the second side member.

The present invention is directed to a vacuum including a dust extraction system. The system includes a filter assembly, an airflow generation assembly, and valve assembly. The airflow generation assembly is configured to draw contaminated air toward the filter assembly and exhaust filtered air as a discharge stream. The filter assembly is configured to remove contaminants from the contaminated airflow by capturing particulate material suspended within the airflow. The valve assembly is configured to selectively direct filtered airflow into the filter assembly such that the filtered air stream cleans the filter.

A surface treatment apparatus may include an air flow path extending from a dirty air inlet to a clean air outlet and a main body. A suction motor may be provided in the air flow path. A cyclone bin assembly may be provided in the air flow path and may be removably mountable to the main body. A pre-motor filter chamber may be provided and may have a rear wall, a sidewall extending and an openable front wall opposite the rear wall and sealingly enclosing the pre-motor filter chamber. The pre-motor filter chamber may be disposed longitudinally between the cyclone bin assembly and the suction motor and the cyclone bin assembly may be positioned in front of at least a portion of the openable front wall of the pre-motor filter chamber. The front wall may be accessible when the cyclone bin assembly is removed from the main body.

Provided is an autonomous mobile cleaner including a main body, a suction unit having a handle and configured to suck up surrounding foreign material, an air pipe configured to connect the main body and the suction unit and guide the foreign material into the main body, at least one driving wheel installed below the main body, a driving unit configured to drive the driving wheel by operating a driving motor, a wheel sensor configured to sense rotation of the driving wheel, and a controller configured to control the movement of the main body through the driving unit on the basis of the rotation of the driving wheel sensed by the wheel sensor.