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US 8,137,064 B2Granted
Fan apparatus
AssigneeNidec Corporation
InventorsShinji Takemoto, Hideaki Konishi
Life of this patent
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Abstract
A fan apparatus includes an impeller, a motor rotating the impeller, a plurality of stator blades arranged opposite to the impeller in an axial direction. The stator blades each include a curved portion at which the stator blades each are curved with respect to the direction in which the stator blades extend.
Claims17
A fan apparatus comprising:
- an impeller;
- a motor arranged to rotate with respect to a central axis in a concentric manner with the impeller;
- a plurality of stator blades arranged in a substantially radial direction opposite from the impeller in an axial direction;
- and
- a support portion connected to the stator blades;
- wherein
- each of the stator blades includes a curved portion extending in the radial direction;
- a direction in which each stator blade extends changes at the curved portion thereof along a hypothetical surface that is substantially perpendicular to the axial direction such that a first portion of each stator blade arranged adjacent to the support portion extends in a different circumferential direction than that of a second portion of each stator blade arranged adjacent to the curved portion;
- and
- the first portion of each stator blade veers towards a direction that is opposite to a rotational direction of the impeller with respect to the central axis.
7 more elements
A fan apparatus comprising:
- an impeller arranged to take in, when the impeller rotates, air from one end of an axial direction and discharge the air from the other axial end;
- a motor arranged to rotate in a concentric manner with the impeller with respect to a central axis;
- a housing including an outer frame portion surrounding the impeller, and a support portion arranged at said axial end to support the motor;
- and
- a plurality of stator blades arranged in substantially a radial direction opposite from the said axial end;
- wherein
- each of the stator blades is arranged to connect the support portion and the outer frame portion, and each of the stator blades includes a curved portion extending in the radial direction;
- a portion at which the stator blade and the support portion are connected to one another is inclined toward a direction of the rotation of the impeller;
- a direction in which each stator blade extends changes at the curved portion thereof along a hypothetical surface that is substantially perpendicular to the axial direction such that a first portion of each stator blade arranged adjacent to the support portion extends in a different circumferential direction than a second portion of each stator blade arranged adjacent to the curved portion;
- and
- the first portion of each stator blade veers towards a direction that is opposite to a rotational direction of the impeller with respect to the central axis.
8 more elements
Dependencies are inferred from the claim text.