FAN MODULE WITH VARIABLE ANGLE BLADES Russian patent published in 2023 - IPC F01D25/16 B64C11/38 F02K3/68 

FIELD: fan module.

SUBSTANCE: object of the invention is a fan module (3) with variable angle blades, wherein said fan module (3) comprises: a fan rotor (20) with fan blades (23) (4, 400a, 400b) mounted with the possibility of rotation, each, around the axis (A) of the installation, the shaft (21) of the fan, located along the longitudinal axis X inside the fan rotor and rotating the fan rotor, the power shaft (11), which drives the fan shaft through the gearbox (50) with an epicyclic gear, at least the first and second bearings (69, 71) guiding rotation of the fan rotor and located in the lubrication chamber (60), and a system (32) for changing the pitch of the fan blades, containing a connecting mechanism (33) connected to the fan blades, and a drive (34) acting on the connecting mechanism (33). According to the invention, the first bearing (69) is located at the inlet of the gearbox (50), and the second bearing (71) is located at the outlet of the gearbox (50), while the fan rotor (20) is connected to the fan shaft (21) through the circular pin (59), located at least on the inlet part of the lubrication chamber (60).

EFFECT: allows simple and effective reduction of the radial and axial clearance in order to optimize the mass of the module and its dynamic situation, while avoiding significant structural changes.

15 cl, 7 dwg