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US 8,297,945 B2Granted
Axial fan
AssigneeSpal Automotive S.R.L.
InventorAlessandro Spaggiari
Life of this patent
Estimating the term…
Abstract
In an axial fan (1), equipped with a frame (13), a motor (2) and an impeller (3) whose hub (15) is rotationally driven by the motor (2) and where the hub (15) is cup-shaped, with an end wall (16) and an annular side wall (17) to partially contain the motor (2), the motor (2) protrudes from the hub (15) with its longitudinal end (23) which is supported and laterally surrounded by a crown (12) of the frame (13) and the crown (12) has an annular end strip (21) facing the hub (15) and laterally surrounding an annular end strip (22) of the hub (15) which faces the crown (12).
Claims13
An axial fan comprising;
- a motor having an axially extending side wall;
- and
- an impeller having:
- a hub that is rotationally driven by the motor;
- and
- a plurality of blades extending from the hub;
- the hub having;
- a circular end wall that is coaxial with a shaft of the motor;
- and
- an annular side wall extending axially from a periphery of the circular end wall such that the hub is open in a direction away from the end wall, the hub side wall having a plurality of sectors, each sector supporting one of the plurality of blades of the impeller and covering a portion of the side wall of the motor, the hub side wall further having a plurality of open areas alternating with the plurality of sectors, each open area exposing a portion of the side wall of the motor.
7 more elements
Dependencies are inferred from the claim text.