Cleaning device for cleaning a surface

Abstract

The present invention relates to a nozzle arrangement () for a cleaning device () for cleaning a surface, the nozzle arrangement comprising: —a brush () rotatable about a brush axis (), the brush being provided with flexible brush elements () having tip portions () for contacting the surface to be cleaned () and picking up dirt and/or liquid particles () from the surface () during the rotation of the brush (), wherein the brush () is at least partly surrounded by a nozzle housing () and protrudes at least partly from a bottom side () of the nozzle housing (), —a squeegee element () which is spaced apart from the brush () and attached to the bottom side () of the nozzle housing () on a first side () of the brush () where the brush elements () enter the nozzle housing () during the rotation of the brush (), wherein the squeegee element () is configured for wiping dirt and/or liquid particles () across or off the surface to be cleaned () during a movement of the cleaning device () —a deflector () for contacting the brush () and deflecting the brush elements () during the rotation of the brush (), and —a restriction element () for at least partly restricting air from getting sucked into the nozzle housing () at a second side () of the brush () where the brush elements () leave the nozzle housing (), wherein the restriction element () is, seen in a rotation direction () of the brush (), arranged behind the deflector (), such that the brush elements (), during the rotation of the brush (), contact the deflector () before passing the restriction element () and then leaving the nozzle housing () at the bottom side (), and the restriction element () comprises a mechanically flexible element that is, due to its flexibility, configured to follow an outer surface of the brush () and to contact the tip portions () during the rotation of the brush ().