Patent ID: 6508622
Filing Date: 2003-01-21
Classification: F04D

Abstract:
Axial fan with reversible flow direction comprising a rotor (11), driven by a variable speed-controlled driving motor (14) and provided with adjustable rotor blades (13) fitted around a rotational axis, characterized in that the rotor (11) is preceded by an inlet stator (15) and followed by a downstream stator (16), which are both provided with guide vanes (17, 18), that the guide vanes (17, 18) of the inlet stator (15) and the downstream stator (16) are designed so as to be mirror-symmetrical to the radial center plane of the rotor (11), and that the guide vanes (17, 18) may be adjusted at an angle to the direction of flow in such a way thatâ€”when the direction of flow is reversedâ€”the inlet stator (15) takes on the function of a downstream stator and the downstream stator (16) takes on the function of an inlet stator.