FIELD: fans.
SUBSTANCE: invention relates to a fan impeller. Proposed is a fan impeller (1) with a hub (4) secured centrally relative to the drive (8) and configured to rotate coaxially thereto between the stops relative to the hub, and with fan blades extending radially from the hub along the circumference thereof and secured in the hub (4) so as to be able to rotate in the range defined by the stops of the hub (4) relative to the drive (8). The fan blades are configured to rotate relative to the blade axes (5) in order to adjust the angle of the fan blades (2), wherein the support of rotation between the limits of the hub (4) stops for the drive (8), support of rotation between the hub (4) and the drive (8) with an unlimited angle of rotation are made to be combined. The drive connection with unlimited rotation is formed by means of a planetary drive (18), the planetary gear drive carrier (19) whereof is attached to the adjustment ring (10) and the epicyclic gear wheel (23) whereof with internal engagement is adjacent to the hub (4) of the fan impeller (1) on a side thereof when the gear wheel structure surrounds the solar gear wheel (22).
EFFECT: ensured reversal of the direction of the fan impeller blades to ensure the reversal of one position of the flow direction for more beneficial operating conditions, leading to the time of changing the flow direction becoming shorter and the voltage in the components of the transmission-supporting structure reducing.
5 cl, 4 dwg
