Abstract: A cleaning head for a wet vacuum cleaner has first and second rotary brushes, each extending across a width of a housing. The housing includes a first projection extending inwardly into a space between the brushes and having a first guide channel creating an air cavity over a floor, and a second projection extending inwardly the space. The second projection has a second guide channel creating another cavity over the floor. These cavities promote lateral air flow into the space between the brushes and thereby reduce pooling of water.

Abstract: A brush, rotatably arranged in a cleaning device for cleaning surfaces, is described. The brush includes a core element and brush elements arranged on the core element. The brush elements are arranged in a bristle field extending in a direction of a longitudinal axis of the brush and in a peripheral direction about the longitudinal axis. Further, the brush elements include fiber hairs. Furthermore, a linear mass density of at least tip portions of the brush elements is lower than 15 g per 10 km. In addition, an average of a packing density of the brush elements in the bristle field is lower than 15,000 brush elements per 1 cm2 so as to ensure that for the purpose of moving the brush during a cleaning action, only a relatively small amount of energy is needed.

Abstract: A cleaning device comprises a surface interaction layer (ML), a cleaning fluid supply (CFF) provided with a cleaning fluid channel (CFC) at the surface interaction layer (ML) for supplying a cleaning fluid to a surface (F) through the surface interaction layer (ML) being in contact with the surface (F), and a dirty fluid drain (DFD) having a dirty fluid channel (DFC) at the surface interaction layer (ML) for draining, by means of underpressure, dirty water from the surface (F) through the surface interaction layer (ML) being in contact with the surface (F).

Abstract: A cleaning device designed to clean a surface includes a cleaner nozzle to face the surface to be cleaned and to perform a cleaning action on the surface, where the cleaner nozzle accommodates at least one rotatably arranged brush including flexible brush elements having tip portions which are intended to contact the surface. The cleaning device includes a force-actuable mechanism that is responsive to a change of a user force on the cleaning device acting to press the cleaner nozzle against the surface when the cleaner nozzle is in an operational position on the surface, and that is functional to cause a change of a value of at least one parameter of operation of the cleaning device, thereby enabling more intuitive handling of the cleaning device by a user.

Abstract: A cleaning device for cleaning a surface is described. The cleaning device includes at least one cleaning element and a wetting system to supply a cleaning liquid to the at least one cleaning element. The wetting system is operable in one of at least one normal operation mode and a boost operation mode involving an increased supply rate of the cleaning liquid with respect to the at least one normal operation mode. During start-up of the cleaning device in a wet cleaning mode thereof, a start-up operation mode of the wetting system is determined to be one of the normal operation mode or the boost operation mode on the basis of assessment of an actual value of at least one parameter that is indicative of whether or not the at least one cleaning element is in a wet cleaning condition.

Abstract: The present invention relates to a body care system (100a-j) including a cooling device (10a-j) for a body care system (100a-j) comprising a brush unit (12) including a plurality of airflow generating structures, a connecting unit (16) for connecting the brush unit (12) to a driving unit (14), the driving unit (14) being configured to drive the brush unit (12) to rotate about a rotational axis (18) to generate an airflow by the rotation of the airflow generating structures, wherein the rotational axis (18) is substantially parallel to the surface of the body part, and a supplying unit arranged inside the brush unit (12) for supplying a cooling medium to the plurality of airflow generating structures of the brush unit (12) to evaporate the cooling medium by the generated airflow.

Abstract: The present invention relates to a body care system (100a-j) including a cooling device (10a-j) for a body care system (100a-j) comprising a brush unit (12) including a plurality of airflow generating structures, a connecting unit (16) for connecting the brush unit (12) to a driving unit (14), the driving unit (14) being configured to drive the brush unit (12) to rotate about a rotational axis (18) to generate an airflow by the rotation of the airflow generating structures, wherein the rotational axis (18) is substantially parallel to the surface of the body part, and a supplying unit arranged inside the brush unit (12) for supplying a cooling medium to the plurality of airflow generating structures of the brush unit (12) to evaporate the cooling medium by the generated airflow.

Abstract: A cleaning device comprises a surface interaction layer (ML), a cleaning fluid supply (CFF) provided with a cleaning fluid channel (CFC) at the surface interaction layer (ML) for supplying a cleaning fluid to a surface (F) through the surface interaction layer (ML) being in contact with the surface (F), and a dirty fluid drain (DFD) having a dirty fluid channel (DFC) at the surface interaction layer (ML) for draining, by means of underpressure, dirty water from the surface (F) through the surface interaction layer (ML) being in contact with the surface (F).

Abstract: A cleaning device comprises a surface interaction layer (ML), a cleaning fluid supply (CFF) provided with a cleaning fluid channel (CFC) at the surface interaction layer (ML) for supplying a cleaning fluid to a surface (F) through the surface interaction layer (ML) being in contact with the surface (F), and a dirty fluid drain (DFD) having a dirty fluid channel (DFC) at the surface interaction layer (ML) for draining, by means of underpressure, dirty water from the surface (F) through the surface interaction layer (ML) being in contact with the surface (F).

Abstract: In a vacuum cleaner nozzle (N) comprising one or more rear wheels (RW), a hinge (H3) is arranged to lift all one or more rear wheels (RW) from a floor (F) when a suction tube (ST) connected to the nozzle (N) is rotated around a longitudinal axis of the suction tube (ST), e.g. after the nozzle (N) has been rotated by more than 45° by means of a further hinge (H2) in order to position a relatively short side of the nozzle at the front of the nozzle in the nozzle's motion direction so that the nozzle is able to clean relatively small spaces that could not be entered if a relatively long side of the nozzle is at the front of the nozzle in the nozzle's motion direction. If the one or more rear wheels (RW) comprise at least two rear wheels, the hinge (H3) is arranged for simultaneously lifting the rear wheels (RW) from the floor (F).

Abstract: A vacuum cleaner utensil comprises a plurality of elements (Lx) flexibly mounted to a central area (C) to provide a suction opening at a side of the central area (C) corresponding to a current movement direction (MD) of the vacuum cleaner utensil out of a plurality of possible movement directions, while reducing a possibility for air to enter the central area (C) from a plurality of other directions. The central area (C) may rotate around its 5 center. The elements (Lx) may rotate with reference to respective axes (A) provided on the central area (C). The elements may be mounted to a single axis (Ac), and have a flexible first part having a first thickness, followed by a second part having a second thickness exceeding the first thickness, wherein—when pushed together as a result of movement—the second parts of neighboring elements (Lx) reduce a possibility for air to enter the central area (C) from 10 between the neighboring elements (Lx).

Abstract: A surface cleaning device comprises a brush (B) that is curved at least partially around a center part (CP) of the surface cleaning device, a deformability of the brush (B) determining a deformability of an outer circumference of the surface cleaning device. The brush (B) has a rotation axis (A), which is curved at least partially around the center part (CP) of the surface cleaning device. The rotation axis (A) is parallel to the surface. The brush (B) may be a donut-shaped brush (B) fully around the center part (CP) of the surface cleaning device. The surface cleaning device may have an electrical motor (M) for driving the brush (B). The center part (CP) may comprise a container (DC) for collecting dirt swept from the surface by the brush (B). The center part (CP) may have an edge (E) for bending the brush (B), dirt being released from the brush (B) at an end of the edge (E) where the brush (B) is relaxed. The center part (CP) may have an upper rim (R) for keeping the brush (B) at its position.

Abstract: The present application relates to a vacuum cleaner head (10). The vacuum cleaner head (10) includes a housing (40) having a vacuum extraction zone (49), and first and second rollers (20, 30) configured to locate against a surface to be cleaned (60). Each of the first and second rollers (20, 30) is able to pick-up detritus from the surface to be cleaned (60) when they rotate and move over the surface (60) and to carry detritus to the vacuum extraction area (49) in the housing (40). In accordance with the present invention, the first roller (20) is rotatable when moved along the surface to be cleaned (60) in a first direction and restricted from rotating when moved in an opposing second direction. The second roller (30) is rotatable when moved along the surface to be cleaned (60) in the second direction and restricted from rotating when moved in the first direction. The present application also relates to a vacuum cleaner comprising the vacuum cleaner head (10).

Abstract: In a vacuum cleaner nozzle (N) comprising one or more rear wheels (RW), a hinge (H3) is arranged to lift all one or more rear wheels (RW) from a floor (F) when a suction tube (ST) connected to the nozzle (N) is rotated around a longitudinal axis of the suction tube (ST), e.g. after the nozzle (N) has been rotated by more than 45° by means of a further hinge (H2) in order to position a relatively short side of the nozzle at the front of the nozzle in the nozzle's motion direction so that the nozzle is able to clean relatively small spaces that could not be entered if a relatively long side of the nozzle is at the front of the nozzle in the nozzle's motion direction. If the one or more rear wheels (RW) comprise at least two rear wheels, the hinge (H3) is arranged for simultaneously lifting the rear wheels (RW) from the floor (F).

Abstract: A surface cleaning device comprises a brush (B) that is curved at least partially around a center part (CP) of the surface cleaning device, a deformability of the brush (B) determining a deformability of an outer circumference of the surface cleaning device. The brush (B) has a rotation axis (A), which is curved at least partially around the center part (CP) of the surface cleaning device. The rotation axis (A) is parallel to the surface. The brush (B) may be a donut-shaped brush (B) fully around the center part (CP) of the surface cleaning device. The surface cleaning device may have an electrical motor (M) for driving the brush (B). The center part (CP) may comprise a container (DC) for collecting dirt swept from the surface by the brush (B). The center part (CP) may have an edge (E) for bending the brush (B), dirt being released from the brush (B) at an end of the edge (E) where the brush (B) is relaxed. The center part (CP) may have an upper rim (R) for keeping the brush (B) at its position.

Abstract: A cleaning device comprises a surface interaction layer (ML), a cleaning fluid supply (CFF) provided with a cleaning fluid channel (CFC) at the surface interaction layer (ML) for supplying a cleaning fluid to a surface (F) through the surface interaction layer (ML) being in contact with the surface (F), and a dirty fluid drain (DFD) having a dirty fluid channel (DFC) at the surface interaction layer (ML) for draining, by means of underpressure, dirty water from the surface (F) through the surface interaction layer (ML) being in contact with the surface (F).

Abstract: A device for cleaning a surface (11) comprises at least one rotatable brush (3,4) which is provided with flexible brush elements (18) for contacting the surface (11) and picking up dirt particles (10) and liquid which are present on the surface (11) during a dirt pick-up period of each revolution of the brush (3, 4), and means for driving the brush (3, 4). A linear mass density of the flexible brush elements (18) is chosen such as to be lower than 50 g per 10 km, at least at tip portions, and an acceleration at tips of the brush elements (18) is set such as to be at least 3,000 m/sec2, at least at some time during another period of each revolution of the brush (3, 4) than the dirt pick-up period, namely a period in which the brush elements (18) are free from contact to the surface (11).

Abstract: The present application relates to a vacuum cleaner head (10). The vacuum cleaner head (10) includes a housing (40) having a vacuum extraction zone (49), and first and second rollers (20, 30) configured to locate against a surface to be cleaned (60). Each of the first and second rollers (20, 30) is able to pick-up detritus from the surface to be cleaned (60) when they rotate and move over the surface (60) and to carry detritus to the vacuum extraction area (49) in the housing (40). In accordance with the present invention, the first roller (20) is rotatable when moved along the surface to be cleaned (60) in a first direction and restricted from rotating when moved in an opposing second direction. The second roller (30) is rotatable when moved along the surface to be cleaned (60) in the second direction and restricted from rotating when moved in the first direction. The present application also relates to a vacuum cleaner comprising the vacuum cleaner head (10).

Abstract: In a method of monitoring pollution of an air filter (Filt1) in a device in which an air flow (A) generated by a fan (F) engaged by a motor (M) passes the air filter (Filt1), the pollution is determined using data representative of a pressure difference (D2) over the fan (F), a pressure difference (D1) over the air filter, and a motor current (I) to the motor (M). The method comprises the steps of: estimating a flow through the air filter from data representative of the pressure difference (D2) over the fan (F), and the motor current (I) to the motor (M), estimating a filter resistance of the air filter from data representative of the flow through the air filter, and the pressure difference (D1) over the air filter, and estimating the pollution of the air filter from data representative of the filter resistance of the air filter.

Abstract: A vacuum cleaner head has a base and a suction opening in the base. An array of flexible flaps protrudes from the base. The flexible flaps are configured to act on a surface to be cleaned. The flexible flaps are spaced from each other to allow the passage of detritus therebetween in a predefined arrangement. The predefined arrangement of the flexible flaps is configured to promote a non-linear flow path through the array of flexible flaps between an end of the base and the suction opening. A gap between first and second rows of flaps is substantially equal to or greater than a space between adjacent flexible flaps in each of the first and second rows.