Air blower
AssigneeNidec Corporation
InventorsTomoyuki TSUKAMOTO, Takehito TAMAOKA, Kazuhiko FUKUSHIMA, Koji HATANAKA
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Abstract
In an air blower, an exhaust extends in a first direction that is a radial component of an impeller, and includes fins. Assuming that a distance from a line segment extending from a central axis in the first direction to an array of the fins upstream of an airflow caused by rotation of the impeller is a first predetermined distance, at least a portion of the fins are disposed in a first region upstream from the first predetermined distance and in a second region downstream from the first predetermined distance. The distance between the fins in the first region is shorter than the distance between the fins in the second region.
Claims13
An air blower comprising:
- an impeller centered on a central axis extending in a vertical direction;
- a motor to rotate the impeller about the central axis;
- and
- a housing to house the impeller;
- wherein
- the housing includes:
- a lower plate covering a lower side of the impeller and fixed to the motor;
- a side wall covering a side of the impeller;
- and
- an upper plate covering an upper side of the impeller;
- at least one of the upper plate and the lower plate includes an air intake portion;
- an exhaust is disposed in a first direction that is a radial component of the impeller and includes a plurality of fins;
- assuming that a distance from a line segment extending from the central axis in the first direction to an array of the fins upstream of an airflow caused by rotation of the impeller is a first predetermined distance, at least a portion of the plurality of fins are disposed in a first region located upstream from the first predetermined distance and in a second region located downstream from the first predetermined distance, and
- a distance between the plurality of fins disposed in the first region is shorter than a distance between the plurality of fins disposed in the second region.
Dependencies are inferred from the claim text.