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US 12,560,370 B2Granted
Ventilation device
AssigneeLG Electronics Inc.
InventorsYounggyu Jung, Hakkyu Choi
Life of this patent
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Abstract
A ventilation device includes a fan including a hub coupled to a rotating shaft, a plurality of blades disposed at the hub and disposed radially with respect to the rotating shaft, and a shroud connecting the plurality of blades. The ventilation device further includes a scroll guide configured to guide a cold air discharged from the fan in both directions, and first and second ducts extending from the scroll guide and extending along a rotation direction of the fan. In the first and second ducts, a length of a hub-side surface is greater than a length of a shroud-side surface.
Claims17
A ventilation device comprising:
- a fan comprising:
- a hub coupled to a rotating shaft,
- a plurality of blades disposed at the hub and radially spaced apart from the rotating shaft, and
- a shroud that is spaced apart from the hub in an axial direction of the rotating shaft and connects the plurality of blades;
- a scroll guide configured to guide air discharged from the fan in a plurality of directions;
- a first duct that extends from a first portion of the scroll guide along a rotation direction of the fan;
- and
- a second duct that extends from a second portion of the scroll guide along the rotation direction of the fan, the second duct comprising a second hub-side surface and a second shroud-side surface,
- wherein the first duct comprises:
- a first hub-side surface,
- a first shroud-side surface,
- a first surface that connects the first hub-side surface to the first shroud-side surface, and
- a second surface that connects the first hub-side surface to the first shroud-side surface and that is disposed at a position forward relative to the first surface in the rotation direction of the fan, the second surface having a shroud-side cutoff point and a hub-side cutoff point,
- wherein the first surface and the second surface define a predetermined angle,
- wherein an angle between (i) a straight line extending from a center of the fan to the shroud-side cutoff point of the second surface and (ii) a straight line extending from the center of the fan to the hub-side cutoff point of the second surface is 15° to 35°,
- wherein a length of the first hub-side surface is greater than a length of the first shroud-side surface, and
- wherein a length of the second hub-side surface is greater than a length of the second shroud-side surface.
14 more elements
A ventilation device comprising:
- a fan comprising:
- a hub coupled to a rotating shaft,
- a plurality of blades disposed at the hub and radially spaced apart from the rotating shaft, and
- a shroud that is spaced apart from the hub in an axial direction of the rotating shaft and connects the plurality of blades;
- a scroll guide configured to guide air discharged from the fan in a plurality of directions;
- a first duct that extends from a first portion of the scroll guide along a rotation direction of the fan, wherein a cross-sectional area of the first duct increases as the first duct extends away from the fan;
- and
- a second duct that extends from a second portion of the scroll guide along the rotation direction of the fan, wherein a cross-sectional area of the second duct increases as the second duct extends away from the fan,
- wherein the first duct comprises:
- a first hub-side surface,
- a first shroud-side surface,
- a first surface that connects the first hub-side surface to the first shroud-side surface, and
- a second surface that connects the first hub-side surface to the first shroud-side surface and that is disposed at a position forward relative to the first surface in the rotation direction of the fan, the second surface having a shroud-side cutoff point and a hub-side cutoff point,
- wherein the first surface and the second surface define a first predetermined angle, and
- wherein an angle between (i) a straight line extending from a center of the fan to the shroud-side cutoff point of the second surface and (ii) a straight line extending from the center of the fan to the hub-side cutoff point of the second surface is 15° to 35°.
12 more elements
Dependencies are inferred from the claim text.