公开(公告)号：US11248620B2

公开(公告)日：2022-02-15

申请号：US16574664

申请日：2019-09-18

Applicant: TECHTRONIC CORDLESS GP

Inventor： Koon For Chung

IPC: F04D29/32 ,  A01G20/47 ,  F04D25/06 ,  F04D29/26

Abstract: An electric blower (10) is disclosed as including a brushless motor (16), and an axial fan (18, 18C) driven by the motor, the motor being operable at a first speed of rotation of 15,000 revolutions per minute (rpm) and a second speed of rotation of 18,000 rpm, the axial fan including a hub (34C) and a plurality of fan blades (36C) engaged with the hub, the hub having a hub diameter (ϕH), the axial fan having an outer diameter (ϕT), and ϕ H ϕ T being between substantially 0.6 and substantially 0.65.

公开(公告)号：US20200096001A1

公开(公告)日：2020-03-26

申请号：US16574664

申请日：2019-09-18

Applicant: TECHTRONIC CORDLESS GP

Inventor： Koon For Chung

IPC: F04D25/06 ,  F04D29/26 ,  A01G20/47

Abstract: An electric blower (10) is disclosed as including a brushless motor (16), and an axial fan (18, 18C) driven by the motor, the motor being operable at a first speed of rotation of 15,000 revolutions per minute (rpm) and a second speed of rotation of 18,000 rpm, the axial fan including a hub (34C) and a plurality of fan blades (36C) engaged with the hub, the hub having a hub diameter (ϕH), the axial fan having an outer diameter (ϕT), and φ H φ T being between substantially 0.6 and substantially 0.65.