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1. 发明申请

US20220034325A1 AXIAL FAN 有权
公开(公告)号：US20220034325A1
公开(公告)日：2022-02-03
申请号：US17388102
申请日：2021-07-29
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Yuta YAMASAKI , Hidefumi KAWAKAMI , Hidenobu TAKESHITA
IPC分类号： F04D13/12 , F04D3/00
摘要： An axial fan includes a housing, an upper motor, and a lower motor. The housing includes an upper housing and a lower housing. A lower peripheral wall of the lower housing includes first engaging portions and lower protruding pieces. The lower protruding pieces oppose the first engaging portions in an axial direction and protrude axially upward from an axially upper surface. An upper peripheral wall of the upper housing includes upper engaging claws and upper notch grooves. The upper engaging claws extend axially downward from an axially lower surface, and include a second engaging portion that engages with the first engaging portion in a lower end portion. The upper notch grooves are notched axially upward from the axially lower surface radially inward of the upper engaging claw. At least a portion of the lower protruding pieces is located in the upper notch grooves.

2. 发明申请

US20190195230A1 CENTRIFUGAL FAN 审中-公开
公开(公告)号：US20190195230A1
公开(公告)日：2019-06-27
申请号：US16190449
申请日：2018-11-14
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Junya MATSUYAMA
IPC分类号： F04D17/02 , F04D17/16 , F04D25/08 , F04D29/22 , F04D29/58 , H02K7/14 , H02K1/27
CPC分类号： F04D17/025 , F04D17/16 , F04D25/082 , F04D29/2261 , F04D29/5806 , H02K1/27 , H02K7/14
摘要： A centrifugal fan that sends out in a radial direction a fluid sucked from an axial direction, includes an impeller rotatable about a center axis extending in a top-bottom direction, and a motor that rotates the impeller. The motor includes a rotor rotatable about the center axis, and a stator that faces at least a portion of the rotor in the radial direction. The impeller includes an impeller hub fixed to the rotor, centrifugal vanes disposed in a circumferential direction on a radial-direction outer side of the impeller hub, and axial flow vanes disposed in the circumferential direction on a radial-direction inner side of the impeller hub. The axial flow vanes are disposed on an axial-direction upper side of the stator.

3. 发明申请

US20190093669A1 AXIAL FAN 审中-公开
公开(公告)号：US20190093669A1
公开(公告)日：2019-03-28
申请号：US15937975
申请日：2018-03-28
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Junya MATSUYAMA
IPC分类号： F04D29/38 , F04D19/00 , F04D29/32 , F04D29/54 , F04D25/08
CPC分类号： F04D29/384 , F04D19/002 , F04D25/06 , F04D25/0613 , F04D25/08 , F04D29/263 , F04D29/329 , F04D29/545
摘要： An axial fan includes a motor, an impeller capable of rotating about a central axis, and a housing including a tubular air channel wall portion arranged radially outside of the impeller. The impeller includes a tubular impeller hub, and a plurality of blades arranged in a circumferential direction on an outer surface of the impeller hub. Each blade includes a first portion where all of an inner circumferential developed blade, an outer circumferential developed blade, and an intermediate circumferential developed blade superimposed on each other overlap when viewed in a radial direction. The inner circumferential developed blade is a circumferential development of a junction of the blade with the outer surface of the impeller hub. The outer circumferential developed blade is a circumferential development of a radially outermost portion of the blade. The intermediate circumferential developed blade is a circumferential development of a radially intermediate portion of the blade between the junction and the radially outermost portion of the blade. The radially outermost portion is at the shortest radial distance from an inner surface of the air channel wall portion in at least a portion of the first portion.

4. 发明申请

US20230085818A1 AXIAL FAN 有权
公开(公告)号：US20230085818A1
公开(公告)日：2023-03-23
申请号：US18072762
申请日：2022-12-01
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Yuta YAMASAKI , Hidefumi KAWAKAMI , Hidenobu TAKESHITA
IPC分类号： F04D13/12 , F04D3/00 , F04D19/00
摘要： An axial fan includes a housing, an upper motor, and a lower motor. The housing includes an upper housing and a lower housing. A lower peripheral wall of the lower housing includes first engaging portions and lower protruding pieces. The lower protruding pieces oppose the first engaging portions in an axial direction and protrude axially upward from an axially upper surface. An upper peripheral wall of the upper housing includes upper engaging claws and upper notch grooves. The upper engaging claws extend axially downward from an axially lower surface, and include a second engaging portion that engages with the first engaging portion in a lower end portion. The upper notch grooves are notched axially upward from the axially lower surface radially inward of the upper engaging claw. At least a portion of the lower protruding pieces is located in the upper notch grooves.

5. 发明申请

US20190093667A1 AXIAL FAN 审中-公开
公开(公告)号：US20190093667A1
公开(公告)日：2019-03-28
申请号：US15937978
申请日：2018-03-28
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Tatsuya TATARA , Junya MATSUYAMA
IPC分类号： F04D29/32 , F04D29/053
CPC分类号： F04D29/329 , F04D25/0613 , F04D29/053 , F04D29/263
摘要： An axial fan includes a rotor portion, a stator portion arranged radially opposite to the rotor portion, and an impeller hub fixed to the rotor portion, and arranged to be capable of rotating integrally with the rotor portion. The impeller hub includes a hub top plate portion; a hub tubular portion being tubular, and arranged to extend axially downward from an outer edge of the hub top plate portion; a plurality of blades arranged in a circumferential direction; a plurality of wall portions arranged in the circumferential direction radially inside of the hub tubular portion; and a joining portion arranged to join a corresponding one of the wall portions to the hub tubular portion. A radially outer surface of the rotor tubular portion is arranged to be in contact with an inner surface of at least one of the wall portions.

6. 发明申请

US20190093662A1 AXIAL FAN 审中-公开
公开(公告)号：US20190093662A1
公开(公告)日：2019-03-28
申请号：US15937982
申请日：2018-03-28
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Tatsuya TATARA , Junya MATSUYAMA
IPC分类号： F04D25/06 , F04D25/08 , F04D29/26 , F04D29/52 , F04D29/64
摘要： An axial fan includes a rotor portion including a shaft arranged to extend along a central axis extending in a vertical direction; a stator portion arranged radially opposite to the rotor portion; and an impeller hub fixed to the rotor portion, and arranged to be capable of rotating integrally with the rotor portion. The impeller hub is an injection molded article, and includes a hub top plate portion arranged to extend perpendicularly to an axial direction; a hub tubular portion being tubular, and arranged to extend axially downward from an outer edge of the hub top plate portion; a plurality of blades arranged in a circumferential direction on an outer surface of the hub tubular portion; and an inner fixing portion arranged radially inward of the hub tubular portion. The rotor portion includes a rotor tubular portion being tubular and arranged to extend in the axial direction. The inner fixing portion includes a first region arranged radially opposite to an outer surface of the rotor tubular portion with a gap therebetween, and having a weld defined in a radially inner surface thereof; and a second region arranged to be in contact with at least a portion of the outer surface of the rotor tubular portion.

7. 发明申请

US20220128064A1 IMPELLER AND AXIAL FAN 有权
公开(公告)号：US20220128064A1
公开(公告)日：2022-04-28
申请号：US17571618
申请日：2022-01-10
申请人： Nidec Corporation
发明人： Hideyuki TAKEMOTO , Kazuhiro INOUCHI
IPC分类号： F04D29/38 , F04D29/66
摘要： An impeller includes Z blades, where Z is an integer equal to 5 or more, arranged in a circumferential direction of the impeller and extending radially, and pitch angles between adjacent blades are all different. In terms of an arbitrary pitch angle θ, when a pitch angle α1 adjacent to the pitch angle θ, and a pitch angle α2 adjacent to the pitch angle θ, different from the pitch angle α1, satisfy a relation, α1

8. 发明申请

US20210108651A1 IMPELLER AND AXIAL FAN 有权
公开(公告)号：US20210108651A1
公开(公告)日：2021-04-15
申请号：US17065574
申请日：2020-10-08
申请人： Nidec Corporation
发明人： Hideyuki TAKEMOTO , Kazuhiro INOUCHI
IPC分类号： F04D29/38 , F04D29/66
摘要： An impeller includes Z blades, where Z is an integer equal to 5 or more, arranged in a circumferential direction of the impeller and extending radially, pitch angles between adjacent blades being all different. In terms of an arbitrary pitch angle θ, when a pitch angle α1 adjacent to the pitch angle θ, and a pitch angle α2 adjacent to the pitch angle θ, different from the pitch angle α1, satisfy a relation, α1

9. 发明申请

US20190390677A1 AXIAL FAN 审中-公开
公开(公告)号：US20190390677A1
公开(公告)日：2019-12-26
申请号：US16402462
申请日：2019-05-03
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Junya MATSUYAMA
IPC分类号： F04D19/00 , F04D29/52 , F04D25/06
摘要： An axial fan includes an upper impeller disposed in an axially upper portion of a housing, and an upper circuit board disposed axially below the upper impeller. An upper impeller cup of the upper impeller includes an upper cylindrical portion and an upper lid. The axial fan includes a lower impeller disposed in an axially lower portion of the housing, and a lower circuit board disposed axially above the lower impeller. A lower impeller cup of the lower impeller includes a lower cylindrical portion and a lower lid. An axial upper end outer diameter of the upper cylindrical portion is smaller than an axial lower end outer diameter of the upper cylindrical portion. An axial lower end outer diameter of the lower cylindrical portion is smaller than an axial upper end outer diameter of the lower cylindrical portion.

10. 发明申请

US20190093668A1 AXIAL FAN 审中-公开
公开(公告)号：US20190093668A1
公开(公告)日：2019-03-28
申请号：US15937981
申请日：2018-03-28
申请人： Nidec Corporation
发明人： Kazuhiro INOUCHI , Tatsuya TATARA , Junya MATSUYAMA
IPC分类号： F04D29/32 , F04D25/06 , F04D19/00
摘要： An axial fan includes a rotor portion including a shaft arranged to extend along a central axis extending in a vertical direction, a stator portion arranged radially opposite to the rotor portion, and an impeller hub fixed to the rotor portion, and arranged to be capable of rotating integrally with the rotor portion. The impeller hub includes a hub top plate portion arranged to extend perpendicularly to an axial direction; a hub tubular portion being tubular, and arranged to extend axially downward from an outer edge of the hub top plate portion; a plurality of blades arranged in a circumferential direction on an outer surface of the hub tubular portion; a plurality of wall portions arranged in the circumferential direction radially inside of the hub tubular portion, with a gap between every adjacent ones of the wall portions; and joining portions each of which is arranged to join a corresponding one of the wall portions to the hub tubular portion. The rotor portion includes a rotor tubular portion being tubular and arranged to extend in the axial direction. An outer surface of the rotor tubular portion is arranged to be in contact with an inner surface of at least one of the wall portions. Each of the at least one wall portion arranged to be in contact with the outer surface of the rotor tubular portion is joined to the hub tubular portion through two or more of the joining portions arranged in the circumferential direction.

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