Blower
AssigneeShinano Kenshi Co., Ltd.
InventorShin-ichiro GODO
Life of this patent
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Abstract
There is provided a blower capable of suppressing fluctuation of a flow path and suppressing occurrence of surging in a use rotation range of the blower by changing a shape without increasing the number of parts. A flow path is formed by a first housing-side shroud 3e connecting to an intake port 3a and an impeller-side shroud 2c connecting outer peripheral sides of blades 2b being adjacent to each other in a radial direction in a blowing passage 8a connecting the intake port 3a and a discharge port 8b, and a narrow part 16 where a cross-sectional area of the flow path becomes the minimum is provided on an outer side of outer peripheral end portions of the blades 2b in the radial direction.
Claims4
A blower in which an impeller and a rotor are respectively assembled to a rotor shaft rotatably and pivotally supported inside a housing having a first housing that houses the impeller and a second housing that houses a motor, and outside air is sucked from an intake port provided at a central part in an axial direction inside the first housing by rotation of the impeller and discharged from a discharge port provided on an outer side in a radial direction,
- wherein a flow path is formed by a first housing-side shroud connecting to the intake port and an impeller-side shroud connecting outer peripheral sides of blades being adjacent to each other in the radial direction in a blowing passage connecting the intake port and the discharge port, and
- a narrow part where a cross-sectional area of the flow path becomes the minimum is provided on an outer side of outer peripheral end portions of the blades in the radial direction.
Dependencies are inferred from the claim text.