초록 ▼

In an axial blower, a plurality of blades are disposed around a hub and each blade is supported on a respective strut which is rotatable in a pair of radially separated bearings. An axially displaceable disk in the hub is connected with the blades for rotating them. The drive shaft for the rotor is

In an axial blower, a plurality of blades are disposed around a hub and each blade is supported on a respective strut which is rotatable in a pair of radially separated bearings. An axially displaceable disk in the hub is connected with the blades for rotating them. The drive shaft for the rotor is hollow and delivers oil to the disk which in turn delivers it to the rotation levers of the struts. The oil moves successively to the bearings radially outward of the disk and accumulated oil is collected by a scoop at the radially outer bearing. The collected oil is delivered to a collection chamber and is recirculated by a pump back to the hollow shaft. An additional cooling circuit may be provided.

대표청구항 ▼

An axial blower comprising a rotor and a rotor hub attached to and rotatable with the rotor; a plurality of rotor blades projecting radially out of the hub, a respective strut being provided for each blade and the blades being supported on their respective struts which extend from the blades radiall

An axial blower comprising a rotor and a rotor hub attached to and rotatable with the rotor; a plurality of rotor blades projecting radially out of the hub, a respective strut being provided for each blade and the blades being supported on their respective struts which extend from the blades radially into the hub; the blades and their struts being rotatable in their orientations with respect to the hub, a respective swing lever being provided for each strut for swinging the orientation of the blade with respect to the hub; an axially displaceable disk in the hub, the disk having receiving means for receiving the swing levers of the struts, such that axial displacement of the disk swings the swing levers for rotating the struts and the blades; a hollow drive shaft for the rotor for rotating the rotor, the drive shaft communicating with the disk and being hollow for delivering oil to the disk; the disk, in turn, communicating through the receiving means with the swing levers for delivering oil to the swing levers where the swing levers meet the receiving means of the disks; a respective bearing inside the hub for each strut for supporting the strut, the bearing supporting the strut at a location that is spaced radially outward from the disk, and the bearing being for enabling rotation of the strut and the blade with respect to the hub; the drive shaft delivering oil to the disk sufficiently for the disk to permit that oil to also move from the receiving means to the bearing; oil removal means at the bearing for removing oil from the hub as the oil gathers in the vicinity of the bearing; said oil removal means comprising a scoop member which includes a tube which is fixed against rotation with respect to the rotating hub, the tube having an inlet aperture at its radially outward end for removing said oil from adjacent said bearing; and recirculation means communicating with the radially inward end of the tube of the oil removal means for recirculating removed oil back to the hollow drive shaft.