| CPC A01G 20/47 (2018.02) [F04D 19/002 (2013.01); F04D 25/06 (2013.01); F04D 29/522 (2013.01); F04D 29/5813 (2013.01); F04D 29/582 (2013.01); H02K 5/207 (2021.01); H02K 9/06 (2013.01); H02K 11/33 (2016.01); H02K 2211/03 (2013.01)] | 9 Claims |
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1. A blower, comprising:
an inlet;
an outlet;
an airflow pipe disposed between the inlet and the outlet, wherein the inlet and the outlet are coaxial with each other;
a fan disposed in the airflow pipe;
an electric motor disposed in the airflow pipe and configured to drive the fan so that air flows in a direction along an air flow path extending from the inlet to the outlet in an axial direction of the airflow pipe;
a motor housing that is disposed in the airflow pipe and houses the electric motor; and
a control unit configured to control the electric motor,
wherein the control unit comprises:
a control board configured to control the electric motor; and
a casing that houses the control board, wherein the casing includes a lower surface that has a shape extending along a front-rear direction and a left-right direction of the casing,
the airflow pipe comprises an exposure hole connecting an inside of the airflow pipe to an outside of the airflow pipe such that the inside and the outside are in communication in a radial direction,
the lower surface of the casing is longer than the exposure hole in both the front-rear direction and the left-right direction, and
the casing is attached to a mounting part of the airflow pipe such that at least a part of the casing covers an entirety of the exposure hole from the outside in the radial direction, so that, when the fan is driven, the part of the casing is exposed to the air that flows along the air flow path.
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