Alfred Kärcher SE & Co. KG

A drive device for a high pressure cleaning appliance includes a motor, the motor shaft of which is rotatably mounted on a motor flange and is coupled to a swash plate arrangement by a planetary gearing, wherein the planetary gearing comprises a sun gear, which is connected to the motor shaft in a rotationally-fixed manner and meshes with planetary gears that are rotatably mounted on a planet carrier and are in engagement with an internally toothed ring gear, and wherein the swash plate arrangement is positioned in an oil housing. So that the drive device has a longer service life and enables a greater selection of materials in the production thereof, the motor flange and the oil housing form separate components, wherein the motor flange comprises the ring gear and the oil housing is fixed to the motor flange, wherein the motor flange forms a centering for the oil housing.

The invention relates to a nozzle attachment assembly including a connection element having a coupling point, wherein along an axial direction, a jet preservation element adjoins a jet shaping element, which adjoins the connection element, wherein the jet preservation element includes an outlet opening in fluid-conducting connection with the coupling point, the fluid-conducting connection being configured as an expansion zone delimited in a first plane by cover walls that have a distance and delimited by side walls in a second plane, such that the expansion zone overall replicates a jet geometry of the jet shaping element in such a way that a liquid jet formed thereby is continuously surrounded within the expansion zone by a peripheral gap, and wherein the connection element and/or the jet shaping element and/or the jet preservation element includes at least one gas inlet opening, which opens into the expansion zone.

The invention relates to a floor cleaning system, comprising a user-guided floor cleaning machine for cleaning a floor surface, a sensor device, a control device, and an actuatable display device, wherein the floor cleaning machine comprises an operating device for a user, a chassis for moving the cleaning machine over the floor surface, and at least one cleaning device having a cleaning tool and preferably a drive device for the cleaning tool, wherein, during operation of the floor cleaning machine, a cleaning path along which, proceeding from a starting point, the cleaning machine travels over the floor surface can be determined by the control device on the basis of signals from the sensor device, and wherein the control device actuates the display device in order to display cleaning-related information, depending upon the cleaning path along which the cleaning machine is determined to have traveled.

A flat jet nozzle arrangement is provided, including a liquid nozzle part for dispensing a fan-shaped liquid jet defining a jet plane and a jet guidance part, and wherein the jet guidance part includes a through-channel having a liquid receiving portion, which receives the liquid jet and which is adjoined by a liquid dispensing portion that widens in the jet plane, and wherein the flat jet nozzle arrangement includes at least one air intake opening, which is in flow connection with the liquid receiving portion. In order to further develop the flat jet nozzle arrangement so that the ambient air impairs the liquid jet to a lesser extent, the liquid dispensing portion includes a longitudinal region, which extends at least over a portion of its total length and in which the liquid dispensing portion narrows perpendicularly to the jet plane with increasing distance from the liquid receiving portion.

The invention relates to a nozzle attachment assembly including a connection element having a coupling point arranged on an end face for accommodating a flat jet nozzle, wherein a jet preservation element adjoins the connection element along an axial direction of extent of the nozzle attachment assembly and the jet preservation element includes an outlet opening in fluid-conducting connection with the coupling point by way of the interior of the nozzle attachment assembly, wherein the fluid-conducting connection is configured as an expansion zone that overall replicates a jet geometry of the flat jet nozzle such that a liquid jet formed having this jet geometry is continuously surrounded within the expansion zone by a peripheral gap in a radial direction, and wherein the connection element and/or the jet preservation element includes at least one gas inlet opening, which opens into the expansion zone.

The present invention relates to a connection device for connecting a first cleaning cart to a second cleaning cart along a connecting direction, each configured for receiving cleaning utensils and comprising rollers for moving on a ground surface, wherein the connection device comprises a first connecting part fixed or fixable to the first cleaning cart and a second connecting part fixed or fixable to the second cleaning cart, wherein the respective connecting part comprises a base region and a projection region projecting therefrom in a direction towards the respective other connecting part, wherein a first locking element is arranged at the first projection region of the first connecting part and a second locking element is arranged at the second projection region of the second connecting part, wherein the locking elements are configured to be in engagement with one another when in a locking position and to be out of engagement when in an unlocking position, and wherein the projection regions are arranged transversely and in particular perpendicularly to the connecting direction, in lateral side-by-side relation to one another. The invention further relates to a cleaning system with two or more cleaning carts and a connection device.

The invention relates to a cleaning machine, including a cleaning head, a holding rod device and a joint device by means of which the holding rod device is articulated to pivot on the cleaning head. Arranged on the holding rod device is a connection element that has a first region and a second region, wherein the second region is at a spacing from the first region in a transverse direction and the transverse direction is oriented transversely to a longitudinal axis of the holding rod device, wherein the connection element is connected by way of the second region to a joint of the joint device with which a pivot axis is associated, and wherein the connection element is connected by way of the first region to the holding rod device.

A piston pump for a high pressure cleaning device is provided, having a pump housing, which includes a first housing part and a second housing part. The first housing part forms a suction conduit and a pressure conduit, and the second housing part forms a plurality of pump chambers each in flow connection with the suction conduit by an inlet channel and with the pressure conduit by way of an outlet channel. The first insert part includes an inlet valve seat and a guide member arranged offset from said inlet valve seat. The inlet closing body includes an inlet valve stem that adjoins the inlet valve plate and is displaceably mounted on the guide member. The first insert part includes an annular inlet valve seat body that points toward the pump chamber and forms the inlet valve seat, wherein the guide member is arranged upstream of the inlet valve seat.

A floor cleaning machine is provided, including a floor head, and at least one cleaning roller, which is arranged on the floor head and rotates about an axis of rotation in a cleaning operation, wherein the at least one cleaning roller has a textile covering, wherein arranged on the floor head is at least one pin strip with a plurality of pins for picking up hair, and wherein the pins abut against the textile covering or penetrate into the textile covering.

A surface cleaning machine is provided, including a cleaning head, at least one cleaning roller unit which is rotatably arranged at the cleaning head, a drive for driving a rotational movement of the cleaning roller unit, a hot fluid generating device which generates a hot fluid that is hot water with a temperature of at least 80° C. and/or steam, and at least one application chamber which is associated with the cleaning roller unit and which is operatively connected to the hot fluid generating device for fluid communication therewith, wherein, in operation, an interior space of the application chamber is filled with hot water mist and/or steam, wherein the application chamber has at least one opening, and wherein the cleaning roller unit is immersed in the interior space of the application chamber at the opening and, in operation, undergoes application of hot water mist and/or steam.