Vacuum cleaner

A vacuum cleaner comprising:

• a container delimiting an inner collection volume;
• a suction unit provided with a motor and an impeller coupled with the motor, the suction unit having at least one inlet port, at an impeller inlet side, and at least one outlet port, at an impeller outlet side;
• and
• an air channeling unit, operative between the container and the suction unit, having an intake side facing the inner collection volume, wherein
• the vacuum cleaner further comprises an exhaust unit including:
• a collection chamber defining a substantially annular airflow volume concentric with said suction unit and positioned around one or more outlet ports of the suction unit to collect air coming from the impeller and convey collected air to an outlet port of the collection chamber, and
• two opposed exhaust channels, each of the two channels surrounding a respective portion of the collection chamber and having an intake end, in correspondence of the outlet port of said collection chamber, and a respective outlet end, opposed to the intake end to discharge air drawn in by the suction unit, wherein the two exhaust channels are symmetrically opposed and substantially identical the one to the other, and wherein the outlet end of each exhaust channel comprises a diverging portion which is divergent in shape proceeding away from the intake end and a constant cross section portion consecutive to the diverging portion and the constant cross section portion has a flow passage cross section sensibly larger than that of the intake end and terminates at the outlet filters conferring to air flow a direction perpendicular to a front surface of each one of said outlet filters.