A ventilator (210) for generating a flux of respiratory pressurised gas, comprising a rotor (211) capable of revolving about an axis of rotation (2110) for generating a flux of respiratory gas, the rotor being driving by a motor (M), an air inlet (212), a first part (2131) configured for collecting the flux of pressurized gas generated by the rotor according to an oblique direction relative to the axis of rotation, and a second part (2132) arranged downstream of the first part and configured for rectifying the flux of pressurized gas collected by the first part in a direction substantially parallel to the axis of rotation.
