公开(公告)号：US06551074B2

公开(公告)日：2003-04-22

申请号：US09934172

申请日：2001-08-21

申请人： Naruhiko Kudo ,  Kesatsugu Watanabe

发明人： Naruhiko Kudo ,  Kesatsugu Watanabe

IPC分类号： F04B3504

CPC分类号： F04D29/083 ,  F04D25/0613

摘要： A centrifugal fan capable of exhibiting enhanced waterproof performance without using a resin mold while being simplified in structure. Air is sucked from one axial side of a revolving shaft of an electric motor and discharged in a radial direction of the revolving shaft. A second side wall of a casing and a wall of a blade support of an impeller have opposite surface portions arranged opposite to each other in an axial direction of the revolving shaft, respectively. The opposite surface portions are formed into a configuration which permits the opposite surface portions to cooperate with each other to provide a labyrinth structure for preventing water from intruding into a space defined between a cup-like member and the second wall from an outside in the radial direction of the revolving shaft. A first side wall and the second side wall are formed with drainage through-holes.

公开(公告)号：US08556593B2

公开(公告)日：2013-10-15

申请号：US12740581

申请日：2008-10-28

申请人： Honami Osawa ,  Naruhiko Kudo ,  Yoshihiko Aizawa

发明人： Honami Osawa ,  Naruhiko Kudo ,  Yoshihiko Aizawa

IPC分类号： F04B41/06

CPC分类号： F04D19/007 ,  F04D19/024 ,  F04D27/004 ,  F04D27/0269

摘要： A counter-rotating axial-flow fan may be controlled to improve both cooling efficiency and operating efficiency. A first motor and a second motor are started in a given starting mode. Then, if the temperature of an object to be cooled is higher than a given reference temperature, the rotational speed of the first motor and the rotational speed of the second motor are controlled in a predetermined cooling efficiency mode that gives priority to cooling the object to be cooled over the operating efficiency of the counter-rotating axial-flow fan. If the temperature of the object to be cooled is equal to or lower than the given reference temperature, the rotational speeds of the first and second motors are controlled in a predetermined operating efficiency mode that maintains the object to be cooled at a temperature equal to or lower than the given reference temperature and reduces the power consumption of the counter-rotating axial-flow fan.

摘要翻译： 可以控制反向旋转轴流风扇以提高冷却效率和运行效率。 在给定的启动模式下启动第一马达和第二马达。 然后，如果要冷却的物体的温度高于给定的参考温度，则将第一电动机的转速和第二电动机的转速控制在预定的冷却效率模式中，该模式优先将对象冷却 冷却反转轴流风扇的运行效率。 如果要冷却的物体的温度等于或低于给定的参考温度，则第一和第二电动机的转速被控制在预定的操作效率模式，其将待冷却的物体保持在等于或等于 低于给定的参考温度，并降低反向旋转轴流风扇的功耗。

公开(公告)号：US20100260616A1

公开(公告)日：2010-10-14

申请号：US12740581

申请日：2008-10-28

申请人： Honami Osawa ,  Naruhiko Kudo ,  Yoshihiko Aizawa

发明人： Honami Osawa ,  Naruhiko Kudo ,  Yoshihiko Aizawa

IPC分类号： F04B49/00

CPC分类号： F04D19/007 ,  F04D19/024 ,  F04D27/004 ,  F04D27/0269

摘要： A counter-rotating axial-flow fan may be controlled to improve both cooling efficiency and operating efficiency. A first motor and a second motor are started in a given starting mode. Then, if the temperature of an object to be cooled is higher than a given reference temperature, the rotational speed of the first motor and the rotational speed of the second motor are controlled in a predetermined cooling efficiency mode that gives priority to cooling the object to be cooled over the operating efficiency of the counter-rotating axial-flow fan. If the temperature of the object to be cooled is equal to or lower than the given reference temperature, the rotational speeds of the first and second motors are controlled in a predetermined operating efficiency mode that maintains the object to be cooled at a temperature equal to or lower than the given reference temperature and reduces the power consumption of the counter-rotating axial-flow fan.

摘要翻译： 可以控制反向旋转轴流风扇以提高冷却效率和运行效率。 在给定的启动模式下启动第一马达和第二马达。 然后，如果要冷却的物体的温度高于给定的参考温度，则将第一电动机的转速和第二电动机的转速控制在预定的冷却效率模式中，该模式优先将对象冷却 冷却反转轴流风扇的运行效率。 如果要冷却的物体的温度等于或低于给定的参考温度，则第一和第二电动机的转速被控制在预定的操作效率模式，其将待冷却的物体保持在等于或等于 低于给定的参考温度，并降低反向旋转轴流风扇的功耗。

公开(公告)号：US20110194955A1

公开(公告)日：2011-08-11

申请号：US13021128

申请日：2011-02-04

申请人： Naruhiko Kudo ,  Tomoaki Ikeda ,  Haruhisa Maruyama

发明人： Naruhiko Kudo ,  Tomoaki Ikeda ,  Haruhisa Maruyama

IPC分类号： F04B35/04

CPC分类号： F04D25/0646 ,  F04D17/16 ,  F04D25/0613 ,  F04D29/059 ,  F04D29/083 ,  H02K5/10 ,  H02K21/22

摘要： An electric fan is provided, including a labyrinth structure with increased performance of preventing entry of a liquid into a receiving space to receive a stator and a rotor. A clearance is defined between an opposed wall portion of a base and an opposed wall portion of an impeller body, which are opposed to each other in an axial direction of a rotary shaft, to form a labyrinth structure. The opposed wall portion of the base and the opposed wall portions of the impeller body are shaped to form a volume expanding portion within the clearance. The volume expanding portion is constituted from a groove portion for expanding the clearance, having a volume larger than other portions within the clearance.

摘要翻译： 提供一种电风扇，包括迷宫式结构，其具有防止液体进入容纳空间以接收定子和转子的性能。 在基座的相对的壁部分和叶轮体的相对的壁部分之间限定了间隙，它们在旋转轴的轴向方向上彼此相对，以形成迷宫式结构。 基座的相对的壁部分和叶轮本体的相对的壁部分成形为在间隙内形成体积扩大部分。 体积扩大部分由用于扩大间隙的槽部构成，其体积大于间隙内的其它部分。

公开(公告)号：US06828706B2

公开(公告)日：2004-12-07

申请号：US10759588

申请日：2004-01-16

申请人： Naruhiko Kudo ,  Kakuhiko Hata

发明人： Naruhiko Kudo ,  Kakuhiko Hata

IPC分类号： H02K502

CPC分类号： H02K5/12 ,  F04D25/0633 ,  F04D25/064 ,  F04D25/0646 ,  F04D29/023 ,  F05D2230/31 ,  F05D2300/43 ,  F05D2300/437 ,  F05D2300/507 ,  F05D2300/611 ,  H02K5/08 ,  H02K2211/03

摘要： A molded part is formed of an insulating resin such that a stator, electronic components, and a circuit substrate are included inside the molded part. A protective layer for preventing breakage of electrical connection that might occur due to expansion or shrinkage of the molded part is provided at least between the electronic components and the molded part. The protective layer is formed of an insulating material having shear adhesion strength smaller than that of an insulating resin of the molded part that has been cured. The shear adhesion strength and the thickness of the protective layer are defined so that, when the expansion or shrinkage which might cause the breakage of the electrical connection has taken place in the insulating resin of the molded part, separation between the electronic components and the protective layer can be caused.

摘要翻译： 模制部件由绝缘树脂形成，使得在模制部件内部包括定子，电子部件和电路基板。 至少在电子部件和模制部件之间提供用于防止由于模制部件的膨胀或收缩而可能发生的电连接断裂的保护层。 保护层由具有比已经固化的模制部件的绝缘树脂的剪切粘合强度小的绝缘材料形成。 限定剪切粘合强度和保护层的厚度，使得当在模制部件的绝缘树脂中发生可能导致电连接断裂的膨胀或收缩时，电子部件与保护层之间的分离 可能会导致层。

公开(公告)号：US06809497B2

公开(公告)日：2004-10-26

申请号：US09966007

申请日：2001-09-28

申请人： Naruhiko Kudo ,  Masato Murata

发明人： Naruhiko Kudo ,  Masato Murata

IPC分类号： H02P124

CPC分类号： H02P6/08

摘要： A drive unit for a brushless fan motor capable of easily controlling the rational speed of the motor without using PWM control. A power control circuit is provided for controlling the rational speed of the rotor by controlling the on/off operation of power feed semiconductor switch. The actual rotational speed of the rotor is compared with the target rotational speed. Based on the compared values, the turn-off time of the power feed semiconductor switch is controlled so that the rotational speed of the rotor may reach the target rotational speed fast and smoothly.

摘要翻译： 一种无刷风扇电机的驱动单元，能够在不使用PWM控制的情况下轻松控制电机的合理速度。 提供功率控制电路，用于通过控制馈电半导体开关的接通/断开操作来控制转子的合理速度。 将转子的实际转速与目标转速进行比较。 基于比较值，控制供电半导体开关的关断时间，使得转子的转速可以快速平稳地达到目标转速。

公开(公告)号：US07227286B2

公开(公告)日：2007-06-05

申请号：US10920805

申请日：2004-08-18

申请人： Naruhiko Kudo ,  Hiromitsu Kuribayashi ,  Toshiya Nishizawa

发明人： Naruhiko Kudo ,  Hiromitsu Kuribayashi ,  Toshiya Nishizawa

IPC分类号： H02K9/06 ,  H02K9/04 ,  H02K7/14 ,  F04D25/02 ,  F04D25/08

CPC分类号： H02K7/14 ,  F04D25/082 ,  H02K1/2786 ,  H02K9/06

摘要： There is provided a fan motor in which an increase in the temperature of windings thereof is surpressed, thereby achieving a long life and high performance. Vent holes 33 for introducing air into a cup-like member 9 are formed in a bottom wall section 9b of a rotor 6. Air flowing direction adjusting ribs 37, which are arranged at intervals in a peripheral direction and each of which extends in a radial direction, are integrally provided on the inner surface of the bottom wall section 9 so that air flown out of exits 33b of the vent holes 33 is directed toward windings 3. In addition to the air flowing direction adjusting ribs 37, a plurality of air stirring ribs 39 for stirring the air inside the cup-like member 9 is arranged on the inner surface of the bottom wall section 9.

摘要翻译： 提供了一种风扇电机，其中其绕组的温度升高得以抑制，从而实现了长寿命和高性能。 用于将空气引入杯状构件9的排气孔33形成在转子6的底壁部分9b中。 沿圆周方向间隔排列并且沿径向方向延伸的空气流动方向调节肋37一体地设置在底壁部分9的内表面上，使得空气从出口33b流出 通气孔33被引向绕组3。 除了空气流动方向调节肋37之外，在底壁部分9的内表面上设置有用于搅拌杯状部件9内的空气的多个空气搅拌肋39。

公开(公告)号：US20050046284A1

公开(公告)日：2005-03-03

申请号：US10920805

申请日：2004-08-18

申请人： Naruhiko Kudo ,  Hiromitsu Kuribayashi ,  Toshiya Nishizawa

发明人： Naruhiko Kudo ,  Hiromitsu Kuribayashi ,  Toshiya Nishizawa

IPC分类号： H02K29/00 ,  F04D25/08 ,  H02K1/27 ,  H02K7/14 ,  H02K9/02 ,  H02K9/06 ,  H02K9/00 ,  F04B35/04 ,  H02K7/00

CPC分类号： H02K7/14 ,  F04D25/082 ,  H02K1/2786 ,  H02K9/06

摘要： There is provided a fan motor in which an increase in the temperature of windings thereof is surpressed, thereby achieving a long life and high performance. Vent holes 33 for introducing air into a cup-like member 9 are formed in a bottom wall section 9b of a rotor 6. Air flowing direction adjusting ribs 37, which are arranged at intervals in a peripheral direction and each of which extends in a radial direction, are integrally provided on the inner surface of the bottom wall section 9 so that air flown out of exits 33b of the vent holes 33 is directed toward windings 3. In addition to the air flowing direction adjusting ribs 37, a plurality of air stirring ribs 39 for stirring the air inside the cup-like member 9 is arranged on the inner surface of the bottom wall section 9.

摘要翻译： 提供了一种风扇电机，其中其绕组的温度升高得以抑制，从而实现了长寿命和高性能。 用于将空气引入杯形构件9的排气孔33形成在转子6的底壁部分9b中。空气流动方向调节肋37，其沿圆周方向间隔设置，并且每个沿径向延伸 方向一体地设置在底壁部9的内表面上，使得从通气孔33的出口33b流出的空气被引向绕组3.除了空气流动方向调节肋37之外，多个空气搅拌 用于搅拌杯状构件9内的空气的肋39布置在底壁部9的内表面上。

公开(公告)号：US06683434B2

公开(公告)日：2004-01-27

申请号：US09965917

申请日：2001-09-28

申请人： Masato Murata ,  Naruhiko Kudo

发明人： Masato Murata ,  Naruhiko Kudo

IPC分类号： H02P124

CPC分类号： H02P6/22

摘要： A drive unit for a brushless motor capable of permitting a rotor to be reliably rotated in a normal or positive direction during starting of the motor. A power control circuit is so constructed that a power feed semiconductor switch may have turn-on time set to a level required or sufficient to permit the rotor to get out of a negative torque region during starting of the brushless motor and turn-off time set to a level sufficient to permit the rotor to race after lapse of the turn-on time. Starting operation by repeat of the turn-on time and turn-off time is carried out at the number of times required to rotate the rotor in a normal or positive direction.

摘要翻译： 一种用于无刷电动机的驱动单元，其能够允许转子在马达启动期间沿正向或正向可靠地旋转。 功率控制电路被构造成使得馈电半导体开关可以将导通时间设置为要求或足够的水平，以允许转子在无刷电动机启动期间脱离负转矩区域并设置关闭时间 达到足以允许转子在经过接通时间之后进行比赛的水平。 通过重复开启时间和关断时间的启动操作是以正常或正向旋转转子所需的次数进行的。