Abstract: A manually guided floor cleaning machine is provided, including a chassis with a front end and a rear end in relation to a straight ahead forward travel direction, a wheel arrangement, which is arranged on the chassis in the region of the rear end, and a cleaning head, which is pivotably arranged on the chassis in the region of the front end, at least one brush being arranged on the cleaning head and a drive device being arranged for the driven rotation of the at least one brush, a rotational axis of the at least one brush being parallel to a wheel axis of the wheel arrangement in the straight ahead forward travel direction.

Abstract: A method for washing a vehicle is provided, wherein the body of the vehicle is sprayed with pressurized washing liquid via an outlet nozzle of a washing tool and the rims of the vehicle are sprayed with a rim cleaning agent. The washing tool is selectively supplied with at least one of pressurized washing liquid by a high-pressure pump and alkaline rim cleaning agent by a cleaning agent supplying device. A vehicle washing apparatus for performing the method is also provided.

Abstract: The invention relates to a piston pump for a high-pressure cleaning appliance, including a plurality of pistons that are movable back and forth and each of which enters a pump chamber and is displaceably held at a piston guiding part. The piston guiding part has a supporting wall on which a plurality of guiding elements, each of which guides a piston, are disposed. In order to be able to produce the piston pump in a more cost-effective manner, it is proposed according to the invention that the supporting wall is curved.

Abstract: A wheel washing apparatus is provided, including at least two washing brushes, each of which is capable of being driven in rotation about a brush axis, wherein the brush axes of the at least two washing brushes are different from one another. In order to provide a wheel washing apparatus which allows a better cleaning result to be achieved, it is proposed that the at least two washing brushes be capable of being driven in rotation about a common central axis which is different from the brush axes.

Abstract: A floor cleaning apparatus is provided, including a dirt collection device for picking up dirty liquid from a floor surface to be cleaned as well as a dirty liquid tank, into which the dirty liquid can be transferred. In order to provide a floor cleaning apparatus of this type, which can be handled in a more user-friendly manner, it is proposed that the floor cleaning apparatus has a tank rinsing mechanism with at least one rinsing line, which includes at least one inlet opening for rinsing liquid, which can be provided for the tank rinsing mechanism, as well as at least one outlet opening for delivering rinsing liquid into an interior of the dirty liquid tank.

Abstract: A motor-pump unit includes an electric motor and a pump. The electric motor has a motor housing, on the outside of which a cooling channel is arranged. The pump has a suction inlet and a pressure outlet. Liquid to be pressurized can be fed by way of the cooling channel to the suction inlet. In order that the motor-pump unit can be produced and assembled more cost-effectively, the motor housing includes a first housing part and a second housing part, which are connectable to each other in a liquid-tight manner and between them form the cooling channel.

Abstract: A device for supporting a side washing brush of a vehicle washing system is provided, which brush is rotatable about a rotational axis, the device including a bearing apparatus for rotatably supporting a drive shaft, and a holding apparatus which is fixedly connected to the bearing apparatus and which is held on a frame by means of elastic cushioning elements arranged above and below the holding apparatus. To improve the device in such a way that the risk of damage to the cushioning elements is reduced, it is proposed that the holding apparatus can be acted on by the cushioning elements only by compressive forces aligned in the direction of the holding apparatus. A vehicle washing system is also proposed which has at least one device of this type, on which a side washing brush is mounted.

Abstract: A vehicle washing installation having two stands on which a nozzle beam with a plurality of high-pressure nozzles is held so as be adjustable in height is provided. The nozzle beam is surrounded by a protective body extending along the nozzle beam and having at least one outlet opening for cleaning liquid, the protective body being adjustable in height together with the nozzle beam and being movable relative to the nozzle beam upon striking an obstacle, the movement of the protective body relative to the nozzle beam being detectable by a sensor assembly in order to provide a control signal.

Abstract: A sweeping machine includes a sweeping brush capable of being driven in rotation, a debris container, a suction fan and at least one filter arranged in the flow path between the sweeping brush and the suction fan, in flow communication with the suction fan via a suction conduit, in flow communication with a pressure vessel via an external air conduit and at least one external air valve and, for filter cleaning, is capable of having external air stored in the pressure vessel applied thereto. In order for the filter to be capable of being cleaned effectively with as little external air as possible and with the external air being at as low a positive pressure as possible, the external air conduit includes a hood which covers the filter on a clean side thereof and forms a first section of the suction conduit which adjoins the clean side of the filter.

Abstract: A self-driven floor cleaning device is provided, including a chassis with a center plane oriented parallel to a forward direction of travel and on which a front end of the floor cleaning device is arranged, wherein the front end is the furthest forward projecting end; and an optical sensor mechanism arranged on the chassis, which includes a first transceiver unit arranged to the left of the center plane and having a first detection field crossing the center plane in front of the front end and directed to the front right; a second transceiver unit arranged to the right of the center plane and having a second detection field crossing the center plane in front of the front end and directed to the front left; and a crossing region spaced between 0.8 and 6 cm from the front end, at which the first and/or second detection field cross the center plane.

Abstract: A sweeping vehicle is provided including a disc brush and a holding device for the disc brush, the holding device having a holding part and a holding arm pivotably connected to the holding part, the holding device held on the vehicle by the holding part, and the disc brush held on the holding arm. The vehicle includes an adjusting device having an adjustment member of variable length engaging the holding arm, the holding arm being pivotable relative to the holding part upon change in length of the adjustment member. The holding device includes a brush carrier pivotably mounted on the holding arm and a coupling device coupling the brush carrier to the adjusting device, the brush carrier being pivotable relative to the holding arm upon change in length of the adjustment member for pivoting the disc brush about a pivot axis aligned at a slant to the axis of rotation.

Abstract: A surface cleaning head for cleaning a surface is provided that includes a housing that has a cleaning chamber surrounded by a peripheral wall and open at the bottom, and in which a cleaning nozzle is mounted on a spray arm and is freely rotatable about a rotational axis, and a jet pump for suctioning off cleaning fluid applied to a surface, the jet pump having a pump inlet channel connected to a combining channel via a mixing chamber, and a motive nozzle upstream from the combining channel. To improve the surface cleaning head, the pump inlet channel is oriented radially with respect to the spray arm and connected to the peripheral wall of the cleaning chamber, the diameter of the combining channel is 14 to 18 mm, and the distance between the motive nozzle and the combining channel is at least 10 mm.

Abstract: Provided is a self-propelled surface cleaning machine including a front wheel device, a steering device associated therewith, a steering angle sensor device capable of detecting a steering angle at the front wheel device, a rear wheel device having a left rear wheel and a right rear wheel, an electromotive drive device associated with each of the left rear wheel and the right rear wheel, a cleaning liquid application device by which cleaning liquid is applicable to a floor/ground in an application area arranged between the front wheel device and the rear wheel device, and a control device operatively connected for signal communication with the steering angle sensor device and the electromotive drive devices, wherein each electromotive drive device is controllable individually depending on signals from the steering angle sensor device.

Abstract: A heat exchanger for heating a liquid is provided, in particular, for high-pressure cleaners, including an inner and an outer heating coil which each have a plurality of turns, and including spacers which are arranged between the inner heating coil and the outer heating coil and are distributed over the circumference of the inner heating coil. To develop the heat exchanger in such a way that it can be manufactured more cost-effectively and is highly efficient, at least one turn of the outer heating coil includes between two spacers immediately adjacent to each other a first turn section in which the radial spacing from the inner heating coil is smaller or larger than in the region of the spacers. Two methods for manufacturing such a heat exchanger are also provided.

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 mobile floor cleaning machine is provided having an integrated floor cleaning tool. In order to provide a floor cleaning machine of this kind with improved handling capability, the floor cleaning machine can include an accessory retainer for cleaning accessories, which has at least one accommodating part, which is fastened to the floor cleaning machine, and at least one retaining part, which can be connected to the accommodating part, for retaining the cleaning accessories.

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 mobile high-pressure cleaning device is provided with an underframe, on the upper side of which a storage section is arranged which forms a motor receptacle, into which a motor for driving a pump is inserted, wherein a holding section fixing the motor in the motor receptacle is placed onto the storage section and has a storage compartment for electric parts on its upper side. The holding section can be designed as a hollow body with a base member and a cover mounted on the base member, wherein the base member forms the storage compartment with a base wall engaging over the motor and side walls projecting upwards from it and wherein the cover is movable back and forth between a closed position and an open position and has at least one actuating member for an electric control element on its outer side.

Abstract: A high-pressure cleaning appliance is provided, including a heatable heat exchanger for heating a fluid that can be dispensed by the high-pressure cleaning appliance, a motor having a drive shaft that defines a drive axis, a pump unit, a fan for generating a combustion air stream and having a fan housing, and a fuel pump. The high-pressure cleaning appliance includes a first securing device having at least one securing element and a securing element receptacle integrally formed on the fan housing and associated with the at least one securing element, and the first securing device can be transferred from an unsecured position, in which the fuel pump can be coupled to the drive shaft and released from it, to a secured position by inserting the at least one securing element into the securing element receptacle to prevent the fuel pump from being released from the drive shaft.

Abstract: A heatable high-pressure cleaning device (10) is provided with a fuel-operated heat exchanger (19) and a fuel tank (34) which has a tank upper section (38) with a closable filling opening (34) and a tank lower section (36) forming the base (48) of the fuel tank (34). In order to develop the heatable high-pressure cleaning device (10) further in such a manner that it can be produced more inexpensively and have a longer service life, the tank upper section (38) can be connected to the tank lower section (36) in a materially joined manner via a join area (60) and the fuel tank (34) can be fillable with liquid fuel only up to beneath the join area (60) in a horizontal position of use of the high-pressure cleaning device (10).