Nozzle arrangement of a cleaning device for cleaning a surface

Abstract

The present invention relates to a nozzle arrangement () of a cleaning device () for cleaning a surface (), comprising: —a nozzle housing (); —a rotating brush () that is rotatable about a brush axis () and comprises a substantially cylindrical core element () with flexible brush elements () that are arranged on a circumferential surface () of the core element (), wherein said brush elements () are configured to contact the surface to be cleaned () and pick up dirt and liquid particles () from the surface to be cleaned () during a rotation of the rotating brush (); —a drive for driving the rotating brush (); —a liquid supplying arrangement () for supplying a cleansing liquid () to the rotating brush (); —a wiping element () for wiping dirt and liquid particles () across or off the surface to be cleaned (), wherein said wiping element () extends along a longitudinal direction (), which is arranged substantially parallel to the brush axis (), and wherein said wiping element () is arranged on a first longitudinal side () of the rotating brush () where the brush elements () enter the nozzle housing () during the rotation of the rotating brush (); and—at least one side sealing element () for sealing a lateral side () of the nozzle housing (), wherein the at least one side sealing element () is spaced apart from a transverse side () of the core element () that is transverse to the circumferential surface () of the core element (), such that a gap () is defined between said transverse side () of the core element () and the at least one side sealing element (); wherein the liquid supplying arrangement () is configured to also supply cleaning liquid () to said gap ().