Motor-fan unit with axial air inlet and outlet with low noise levels.

Abstract

Title of the invention: Motor-fan unit with axial air inlet and low noise air outlet. The present invention relates to a motor-fan unit (2) comprising at least one guide element and a propeller (6) comprising a plurality of blades (22), the propeller (6) being configured to be driven in rotation about an axis of rotation (A) and to force an axial inlet, along the axis of rotation (A), of an airflow into the housing (4), characterized in that the guide element is formed of at least a plurality of blades (21) arranged circumferentially around the axis of rotation between the propeller (6, 7) and the air outlet (12), said blades being configured to direct axially, along the axis of rotation, the airflow towards the air outlet (12), and characterized in that the blades (22, 23) of the propeller (6, 7) are distributed irregularly around the axis of rotation (A) of the propeller (22, 23). (Figure 8)