Abstract: A vacuum cleaner includes a drive unit configured to generate a suction air stream, a vacuum attachment, a separator device disposed between the vacuum attachment and the drive unit and a control unit. The control unit is configured to influence an input power to the drive unit as a manipulated variable so as to control the suction power at the vacuum attachment as the controlled variable. The suction power at the vacuum attachment is controllable at a predefined level.

Abstract: A vacuum cleaner includes a drive unit configured to generate a volume flow rate and a negative pressure, when energized, during operation of the vacuum cleaner, a means for determining a measure of the volume flow rate generated during operation, a pressure sensor for determining a measure of the negative pressure generated during operation, and a drive unit controller. The drive unit controller is configured to generate an operand from the measure of the determined volume flow rate and the measure of the determined negative pressure, and to compare the operand with a predefinable threshold as a design limit. The drive unit controller is operable to reduce the electrical power input to the drive unit based on the comparison of the operand to the design limit.

Abstract: A vacuum cleaner includes a drive unit having a maximum input power and a drive unit operating device configured to operate the drive unit below the maximum input power. The drive unit operating device includes a regulating unit configured to regulate an actual input power of the drive unit within a first operating range in which an input power is above a predefinable upper limit. The regulating unit is operable to detect a controlled variable including the actual input power and/or a measure of the actual input power, compare the actual input power to a reference variable including the predefinable upper limit and/or a measure of the predefinable upper limit, and influence the actual input power of the drive unit so as to conform the actual input power of the drive unit to the reference variable.

Abstract: A vacuum cleaner includes a housing, a motor-driven suction fan disposed in the housing, a fan motor and a power supply device configured to provide power supply to the fan motor. The vacuum cleaner also includes both a rechargeable battery and cord reel permanently integrated in the housing such that the vacuum cleaner is configured to be alternately operable in a battery mode and a mains mode.

Abstract: A vacuum cleaner includes a drive unit configured to generate a volume flow rate and a negative pressure, when energized, during operation of the vacuum cleaner, a means for determining a measure of the volume flow rate generated during operation, a pressure sensor for determining a measure of the negative pressure generated during operation, and a drive unit controller. The drive unit controller is configured to generate an operand from the measure of the determined volume flow rate and the measure of the determined negative pressure, and to compare the operand with a predefinable threshold, as a design limit. The drive unit controller is operable to reduce the electrical power input to the drive unit based on the comparison of the operand to the design limit.

Abstract: A vacuum cleaner includes a drive unit configured to generate a suction air stream, a vacuum attachment, a separator device disposed between the vacuum attachment and the drive unit and a control unit. The control unit is configured to influence an input power to the drive unit as a manipulated variable so as to control the suction power at the vacuum attachment as the controlled variable. The suction power at the vacuum attachment is controllable at a predefined level.

Abstract: A vacuum cleaner includes a drive unit having a maximum input power and a drive unit operating device configured to operate the drive unit below the maximum input power. The drive unit operating device includes a regulating unit configured to regulate an actual input power of the drive unit within a first operating range in which an input power is above a predefinable upper limit. The regulating unit is operable to detect a controlled variable including the actual input power and/or a measure of the actual input power, compare the actual input power to a reference variable including the predefinable upper limit and/or a measure of the predefinable upper limit, and influence the actual input power of the drive unit so as to conform the actual input power of the drive unit to the reference variable.

Abstract: A vacuum cleaner fan with an electric drive motor having a stator assembly and a rotor. The stator assembly and rotor are disposed in a bearing pot. An at least single-stage fan unit is driven by the electric motor. The fan unit includes a guide stage, a suction cap, and an impeller that is configured to generate an air stream. The bearing pot includes a receiving pocket which holds an adapter housing. The adapter housing accommodates a printed circuit board. A power semiconductor operable to control rotational speed of the fan unit is included on the printed circuit board. At least a portion of the power semiconductor protrudes from the adapter housing into the vicinity of the air stream generated by the fan unit.

Abstract: A vacuum cleaner includes a housing, a motor-driven suction fan disposed in the housing, a fan motor and a power supply device configured to provide power supply to the fan motor. The vacuum cleaner also includes both a rechargeable battery and cord reel permanently integrated in the housing such that the vacuum cleaner is configured to be alternately operable in a battery mode and a mains mode.