US 12,281,658 B2
Blower
Akira Ojima, Anjo (JP); and Fumitoshi Numata, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Mar. 4, 2024, as Appl. No. 18/594,214.
Application 18/594,214 is a division of application No. 17/374,689, filed on Jul. 13, 2021, granted, now 11,946,484.
Application 17/374,689 is a continuation in part of application No. PCT/JP2020/003786, filed on Jan. 31, 2020.
Claims priority of application No. 2019-023953 (JP), filed on Feb. 13, 2019; and application No. 2019-023956 (JP), filed on Feb. 13, 2019.
Prior Publication US 2024/0200568 A1, Jun. 20, 2024
Int. Cl. F04D 29/28 (2006.01); F04D 25/06 (2006.01); F04D 25/08 (2006.01); F04D 29/30 (2006.01); F04D 29/42 (2006.01)
CPC F04D 29/30 (2013.01) [F04D 25/0606 (2013.01); F04D 25/0673 (2013.01); F04D 25/086 (2013.01); F04D 29/281 (2013.01); F04D 29/4226 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A blower, comprising:
a brushless motor;
a plurality of fans coaxially arranged in multiple stages and configured to compress and blow air by rotating around a specified rotational axis when the brushless motor is driven;
a housing that houses the brushless motor and the fans, the housing having an inlet opening through which the air is sucked into the housing and a discharge opening through which the air compressed and blown by the fans is discharged; and
a battery mounting part to which a battery for supplying power to the brushless motor is removably mountable,
wherein:
a rotational speed of the brushless motor is within a range of 50,000 rpm to 120,000 rpm,
a diameter of each of the fans is within a range of 30 mm to 50 mm,
an area of the discharge opening is within a range of not less than an area of a circle having a diameter of 2.5 mm and not more than an area of a circle having a diameter of 10 mm, and
a blowing force of the air discharged through the discharge opening is within a range of 1 N to 3 N.