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公开(公告)号：US20210340991A1
公开(公告)日：2021-11-04
申请号：US17374689
申请日：2021-07-13
Applicant: MAKITA CORPORATION
Inventor： Akira OJIMA , Fumitoshi NUMATA
Abstract: A blower includes a motor, a plurality of fans coaxially arranged in multiple stages, a housing having an inlet opening and a discharge opening, and a battery mounting part to which a battery is removably mountable. A rotational speed of the 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 70 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. A blowing force of air discharged through the discharge opening is within a range of 1 N to 3 N.
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公开(公告)号：US20240200568A1
公开(公告)日：2024-06-20
申请号：US18594214
申请日：2024-03-04
Applicant: Makita Corporation
Inventor： Akira OJIMA , Fumitoshi NUMATA
CPC classification number: F04D29/30 , F04D25/0606 , F04D25/0673 , F04D25/086 , F04D29/281 , F04D29/4226
Abstract: A blower includes a motor, a plurality of fans coaxially arranged in multiple stages, a housing having an inlet opening and a discharge opening, and a battery mounting part to which a battery is removably mountable. A rotational speed of the 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 70 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. A blowing force of air discharged through the discharge opening is within a range of 1 N to 3 N.
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公开(公告)号：US20220288762A1
公开(公告)日：2022-09-15
申请号：US17684859
申请日：2022-03-02
Applicant: Makita Corporation
Inventor： Ryosuke ITO , Norihiro USHIO , Akira OJIMA , Yoshiaki KASHINO
Abstract: A working machine may include: a fan configured to generate an air flow inside a first space; a control unit disposed inside the first space; a partition wall separating the first space from a second space; a first aperture communicating the first space with the second space; and a rib extending from the partition wall and forming an air passage in which the air flow passes, wherein the air passage is positioned between the control unit and the rib. The control unit may include a case housing a circuit board. The control unit may include a first surface facing the rib. In a first direction perpendicular to the first surface, the rib and the first surface may at least partially overlap with each other. A distance between the rib and the first surface may be smaller than a thickness of the case in the first direction.
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公开(公告)号：US20160169249A1
公开(公告)日：2016-06-16
申请号：US14950405
申请日：2015-11-24
Applicant: MAKITA CORPORATION
Inventor： Makoto TAKAHASHI , Akira OJIMA
CPC classification number: F04D29/325 , A01G20/47 , F04D19/002 , F04D25/0673 , F04D29/667
Abstract: A blower apparatus of the type which comprises a body housing with air inlet and outlet ends, a cylindrical motor casing assembled within the body housing in such a manner as to permit therethrough airflow introduced into the air inlet end of the body housing and exhausted outwardly from the air outlet end of the body housing, an electric motor mounted within the motor housing, an axial-flow fan having a plurality of fan blades attached on a rotary drive shaft driven by the electric motor, wherein the number Z of fan blades of the axial-flow fan and the rated rotation speed n (r/s) of the rotary drive shaft under maximum power in normal operation of the blower apparatus are determined to satisfy the following correlation Z·n≦2000 (provided, n>160).
Abstract translation: 一种鼓风机装置，其包括具有空气入口和出口端的主体壳体，圆柱形电动机壳体，其组装在主体壳体内，以允许通过气流引入到主体壳体的空气入口端并从外部排出 主体壳体的出风端，安装在电动机壳体内的电动机，具有安装在由电动机驱动的旋转驱动轴上的多个风扇叶片的轴流风扇，其中风扇叶片的数量Z为 轴流风扇和鼓风机装置的正常运行时的最大功率下的旋转驱动轴的额定转速n（r / s）被确定为满足以下相关性Z·n＆nlE; 2000（提供，n> 160）。
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