A refrigeration appliance comprising: - at least one compartment for receiving food items; - a refrigeration system for cooling down air and a fan system configured to draw air from an evaporator of the refrigeration system for conveying the cooled air to said least one compartment; wherein said fan system comprises a fan comprising a rotor rotating in a direction of rotation around a rotation axis, at least a first duct (40a-40g) and at least a second duct (40a-40g) arranged around said fan for the conveyance of the air expelled by said fan towards said at least one compartment, said first duct (40a-40g) and said second duct (40a-40g) being joined at a partition wall (40.1-40.5); wherein, by considering a reference plane that is orthogonal to said rotation axis of the rotor and by considering an orthogonal coordinate system wherein: - the origin is the closest point of the partition wall (40.1-40.5) to said rotation axis; - Y-axis is the line laying in said reference plane and drawn from said rotation axis towards said origin; - X-axis is the line laying in said reference plane and drawn from said origin and perpendicular to said Y-axis; at least a portion of the cross-section of said partition wall (40.1-40.5) in said reference plane shows a concave upward curve (44b-44f) while moving from the origin towards positive values of said X-axis following said direction of rotation of the rotor, wherein said rotor comprises at least one blade having a leading edge (Le), a trailing edge (Te) and a chord line, characterized in that the distance (d1-d5) between said origin and the circumference determined by said trailing edge (Te) during rotation of said rotor has a value higher than 0,5 times the length of said chord line. - at least one compartment for receiving food items; - a refrigeration system for cooling down air and a fan system configured to draw air from an evaporator of the refrigeration system for conveying the cooled air to said least one compartment; wherein said fan system comprises a fan comprising a rotor rotating in a direction of rotation around a rotation axis, at least a first duct (40a-40g) and at least a second duct (40a-40g) arranged around said fan for the conveyance of the air expelled by said fan towards said at least one compartment, said first duct (40a-40g) and said second duct (40a-40g) being joined at a partition wall (40.1-40.5); wherein, by considering a reference plane that is orthogonal to said rotation axis of the rotor and by considering an orthogonal coordinate system wherein: - the origin is the closest point of the partition wall (40.1-40.5) to said rotation axis; - Y-axis is the line laying in said reference plane and drawn from said rotation axis towards said origin; - X-axis is the line laying in said reference plane and drawn from said origin and perpendicular to said Y-axis; - the origin is the closest point of the partition wall (40.1-40.5) to said rotation axis; - Y-axis is the line laying in said reference plane and drawn from said rotation axis towards said origin; - X-axis is the line laying in said reference plane and drawn from said origin and perpendicular to said Y-axis; at least a portion of the cross-section of said partition wall (40.1-40.5) in said reference plane shows a concave upward curve (44b-44f) while moving from the origin towards positive values of said X-axis following said direction of rotation of the rotor, wherein said rotor comprises at least one blade having a leading edge (Le), a trailing edge (Te) and a chord line, characterized in that the distance (d1-d5) between said origin and the circumference determined by said trailing edge (Te) during rotation of said rotor has a value higher than 0,5 times the length of said chord line.