Air blower
AssigneeNidec Corporation
InventorShingo Yoshino
Life of this patent
Estimating the term…
Abstract
An air blower includes an impeller rotatable about a central axis extending vertically, a motor to rotate the impeller, and a holder to hold the motor. The holder includes a base on which the motor is provided, attachments on a radial directional-outer side of the impeller, arms connecting the base and the attachments, and a wall surface on a side where the impeller is disposed, between the base and each attachment, and facing a radial-directional inner side. The wall surface includes a first surface extending outwardly in the radial direction and directed towards the front in the rotational direction of the impeller.
Claims14
An air blower, comprising:
- an impeller rotatable about a central axis extending vertically;
- a motor to rotate the impeller;
- and
- a holder to hold the motor;
- wherein
- the air blower is a centrifugal air blower which generates a radial airflow perpendicular to the central axis;
- the holder includes:
- a base on which the motor is provided;
- a plurality of attachments disposed on a radial directional-outer side of the impeller;
- a plurality of arms connecting the base and each of the attachments;
- and
- a wall surface located at a side where the impeller is disposed, between the base and each attachment, and facing a radial-directional inner side;
- wherein
- the wall surface includes a first surface extending outwardly in the radial direction with an increasing distance from the central axis at a changing circumferential position and directed towards a front in the rotational direction of the impeller.
Dependencies are inferred from the claim text.