Nozzle arrangement configured to face a surface to be cleaned

A nozzle arrangement configured to face a surface to be cleaned, comprising:

• a first suction body and a second suction body located at a distance relative to each other, wherein both the first suction body and the second suction body are configured to be operated to suck dust and dirt from the surface to be cleaned, and wherein both the first suction body and the second suction body are connectable to a vacuum mechanism configured to create underpressure at a position of the first suction body and the second suction body;
• a level setting mechanism configured to put the first suction body and the second suction body at different overall levels relative to the surface to be cleaned in a normal, operational orientation of the nozzle arrangement on the surface;
• and
• a suction enhancing mechanism configured to partially close one of the first suction body and the second suction body to one of the surface to be cleaned and an internal air conduit of the nozzle arrangement during a forward movement or a backward movement of the nozzle arrangement, respectively, and wherein the suction enhancing mechanism is configured to at least partially close the second suction body while leaving the first suction body open when the nozzle arrangement is subjected to a force related to a movement of the nozzle arrangement with the first suction body at a leading position and the second suction body at a trailing position.