Abstract: The invention relates to an apparatus for producing CO2 pellets from CO2 snow, in particular, for a cleaning device for spraying surfaces to be treated with a mixed stream of a pressurized gas and CO2 pellets, includes a compressor device for compressing CO2 snow to form CO2 pellets. The compressor device includes a gear compressor. The gear compressor includes at least one compressor wheel which is mounted rotatable about a first rotation axis and has a plurality of compressing elements, and includes at least one intake wheel which has a plurality of snow intakes for accepting CO2 snow. The snow intakes are configured corresponding to the compressing elements. The intake wheel is mounted rotatable about a second rotation axis and cooperates with the at least one compressor wheel. The intake wheel includes an intake wheel sleeve with an intake wheel sleeve wall.

Abstract: Cyclone separator apparatus for a cleaning device, including a swirl chamber having a shell wall which delimits a separator space; a dip tube extending into the separator space of the swirl chamber; a negative pressure application connection which is arranged at the dip tube or is operatively connected for fluid communication therewith and is connectable or connected to a suction unit; at least one intake opening which is arranged at the swirl chamber; and at least one discharge opening which is arranged at the swirl chamber, wherein the at least one discharge opening is configured in the form of a slot in the shell wall.

Abstract: The invention relates to an apparatus for producing CO2 pellets from CO2 snow, in particular, for a cleaning device for spraying surfaces to be treated with a mixed stream of a pressurized gas and CO2 pellets, includes a compressor device for compressing CO2 snow to form CO2 pellets. The compressor device includes a gear compressor. The gear compressor includes at least one compressor wheel which is mounted rotatable about a first rotation axis and has a plurality of compressing elements, and includes at least one intake wheel which has a plurality of snow intakes for accepting CO2 snow. The snow intakes are configured corresponding to the compressing elements. The intake wheel is mounted rotatable about a second rotation axis and cooperates with the at least one compressor wheel. The intake wheel includes an intake wheel sleeve with an intake wheel sleeve wall.

Abstract: A cyclone separator for a suction cleaning appliance is provided, including a separating container for separating cleaning liquid drawn in by suction, with an inlet through which suction air and cleaning liquid can be drawn by suction into an interior of the separating container, thereby forming a cyclone, a suction extraction line extending into the interior and connectable to a suction unit, with an outlet through which suction air can be drawn out of the interior, and a partition wall shielding the outlet from cleaning liquid, a space being provided between an inner wall of the separating container and the partition wall. The cyclone separator can include at least one transfer element arranged between the partition wall and the inner wall for transferring cleaning liquid from the partition wall to the inner wall, the transfer element bridging the space except for a maximum remaining space of 2 millimeters.

Abstract: A washing element for a washing system is provided, in particular an automatic motor vehicle washing system, wherein the washing element is formed by a foam material. To provide a washing element of this kind wherein the risk of damage to the article to be washed can be reduced, the washing element is a foam sheet which has at least on one side a skin, wherein the skin is provided, at least in certain sections, with a surface texturing.

Abstract: A washing element for a washing system is provided, in particular an automatic motor vehicle washing system, wherein the washing element is formed by a foam material. To provide a washing element of this kind wherein the risk of damage to the article to be washed can be reduced, the washing element is a foam sheet which has at least on one side a skin, wherein the skin is provided, at least in certain sections, with a surface texturing.

Abstract: A cyclone separator for a suction cleaning appliance is provided, including a separating container for separating cleaning liquid drawn in by suction, with an inlet through which suction air and cleaning liquid can be drawn by suction into an interior of the separating container, thereby forming a cyclone, a suction extraction line extending into the interior and connectable to a suction unit, with an outlet through which suction air can be drawn out of the interior, and a partition wall shielding the outlet from cleaning liquid, a space being provided between an inner wall of the separating container and the partition wall. The cyclone separator can include at least one transfer element arranged between the partition wall and the inner wall for transferring cleaning liquid from the partition wall to the inner wall, the transfer element bridging the space except for a maximum remaining space of 2 millimeters.

Abstract: The invention relates to a method for controlling the operating mode of a cleaner, in particular, a high-pressure cleaner, wherein a pump delivers cleaning fluid via a pressure line to a closable spray nozzle, a signal transducer which provides control signals as a function of the pressure in the pressure line being coupled with the pressure line. To further develop the method so that the cleaner can be reliably controlled in a constructionally simple manner from the spray nozzle, it is proposed, in accordance with the invention, that a first control signal be provided by the signal transducer by closing the spray nozzle, and a second control signal be provided by the signal transducer by subsequently opening the spray nozzle again, and that the operating mode of the cleaner be controlled as a function of the duration of the time interval between the two control signals. A cleaner, in particular, a high-pressure cleaner, for performing the method is also proposed.

Abstract: The invention relates to a device for extracting liquid from a wiping covering of a surface wiping device which has a wiping head held on a handle and having two supporting arms, on which the wiping covering is held and which can be pivoted back and forth between a position aligned at right angles to the handle and a position aligned at an angle or parallel to the handle, wherein the device comprises a container, in which a rotatably drivable wiping head holder is arranged, the holder having a receiving area, into which the wiping head can be inserted with the wiping covering.

Abstract: The invention relates to a device for expelling liquid from a wiping element which is held on a wiping head of a surface cleaning device so as to form a wiping surface, comprising a container, in which a wiping element holding device accommodating the wiping element as well as a driving device are arranged, wherein the wiping element holding device can be driven by means of the driving device so as to rotate about an axis of rotation. In order to further develop the device in such a manner that it has a lower consumption of energy it is suggested in accordance with the invention that the wiping element holding device form a receiving means, into which the wiping element can be inserted with a surface normal of the wiping surface aligned at an angle to the axis of rotation.

Abstract: The invention relates to a device for extracting liquid from a wiping covering of a surface wiping device which has a wiping head held on a handle and having two supporting arms, on which the wiping covering is held and which can be pivoted back and forth between a position aligned at right angles to the handle and a position aligned at an angle or parallel to the handle, wherein the device comprises a container, in which a rotatably drivable wiping head holder is arranged, the holder having a receiving area, into which the wiping head can be inserted with the wiping covering.

Abstract: The invention relates to a device for rinsing out and spin drying a wiping body, which is mounted on a wiping head of a surface cleaning device, comprising a container which has a rinsing region and a spin dryer region, a wiping head mount being mounted rotatably in the spin dryer region, into which wiping head mount the wiping head can be inserted together with the wiping body and which wiping head mount can be driven rotationally by means of a drive device in order to remove moisture from the wiping body, the rinsing region accommodating a cleaning fluid, and it being possible for the wiping head together with the wiping body to be inserted into the rinsing region.

Abstract: The invention relates to a device for spinning liquid out of a wiping body, which is mounted on a wiping head of a surface cleaning device, comprising a container, in which a wiping head mount is mounted rotatably, into which mount the wiping head can be inserted together with the wiping body and which can be driven rotationally about an axis of rotation by means of a drive device in order to remove moisture from the wiping body. In order to further develop the device in such a manner that its power consumption can be kept to a low level, it is proposed according to the invention that the device comprises a measuring element for determining a degree of drying or a spin drying time of the wiping body, there being associated with the measuring element an indicating unit for indicating when a specific degree of drying has been reached or a specific spin drying time has elapsed.

Abstract: The invention relates to a device for expelling liquid from a wiping element which is held on a wiping head of a surface cleaning device so as to form a wiping surface, comprising a container, in which a wiping element holding device accommodating the wiping element as well as a driving device are arranged, wherein the wiping element holding device can be driven by means of the driving device so as to rotate about an axis of rotation. In order to further develop the device in such a manner that it has a lower consumption of energy it is suggested in accordance with the invention that the wiping element holding device form a receiving means, into which the wiping element can be inserted with a surface normal of the wiping surface aligned at an angle to the axis of rotation.