Fan device
AssigneeMINEBEA MITSUMI Inc.
InventorsYuma OHNO, Yuji OMURA
Life of this patent
Estimating the term…
Abstract
A fan device 1 includes a second housing 12 and a hub 27. The hub 27 includes a hub body part 272 and a hub outer peripheral wall part 271. The hub body part 272 is a surface extending in the radial direction orthogonal to the direction of the axis x, and the hub body part 272 covers the motor 20 from the upper side “a” in the direction of an axis c. The hub outer peripheral wall part 271 extends from the end portion of the hub body part 272 toward the lower side “b” from the upper side “a” in the direction of the axis x. Assuming that the outer diameter of the outer peripheral surface of the hub outer peripheral wall part 271 is “a1”, and the outer diameter of the outer peripheral surface of the base outer peripheral wall part 124 is “b1”, 1.05<b1/a1<1.13 is established.
Claims5
A fan device comprising:
- an impeller including a hub and a plurality of blades provided on the hub;
- a motor configured to rotate the impeller;
- and
- a housing configured to accommodate the impeller, wherein
- the housing includes a motor base part which is formed into a cylindrical shape, and which covers the motor from a lower side in a direction of an axis,
- the motor base part includes a base body part and a base outer peripheral wall part, the base body part being a surface which extends in a radial direction orthogonal to the direction of the axis, and covering the motor from the lower side in the direction of the axis, and the base outer peripheral wall part extending from an end portion of the base body part toward an upper side from the lower side in the direction of the axis,
- the hub includes a hub body part and a hub outer peripheral wall part, the hub body part being a surface which extends in the radial direction orthogonal to the direction of the axis, and covering the motor from the upper side in the direction of the axis, and the hub outer peripheral wall part extending from an end portion of the hub body part toward the lower side from the upper side in the direction of the axis, and
- assuming that a diameter of an outer peripheral surface of the hub outer peripheral wall part is “a1”, and a diameter of an outer peripheral surface of the base outer peripheral wall part is “b1”,
- 1.05<b1/a1<1.13 is established.
Dependencies are inferred from the claim text.