公开(公告)号：US11470743B2

公开(公告)日：2022-10-11

申请号：US17327819

申请日：2021-05-24

Applicant: Nidec Corporation

Inventor： Toshihiko Tokeshi ,  Nobuya Nakae ,  Takahiro Imanishi ,  Akihiko Makita ,  Takehito Tamaoka

IPC: H05K7/20 ,  H01L23/473

Abstract: A cooling device includes at least two cooling units, each cooling unit including a plate-shaped cold plate extending in a horizontal direction, a radiator extending in a first direction perpendicular to the horizontal direction and having a plurality of plate-shaped fins which, on the cold plate, is disposed parallel to a second direction perpendicular to the first direction, and a pump which supplies a refrigerant liquid to the cold plate and the radiator, in which the pump is adjacent to the radiator and is disposed in the second direction of the radiator, and the pump of one first cooling unit of the two cooling units faces the other second cooling unit of the two cooling units in the second direction or in a third direction orthogonal to the first direction and the second direction.

公开(公告)号：US11252837B2

公开(公告)日：2022-02-15

申请号：US16297770

申请日：2019-03-11

Applicant: Nidec Corporation

Inventor： Nobuya Nakae ,  Akihiko Makita ,  Hidenobu Takeshita ,  Tomotsugu Sugiyama ,  Toshihiko Tokeshi ,  Takehito Tamaoka

IPC: H05K7/20 ,  F28D1/053 ,  F28F1/02

Abstract: A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling and pipes each defining a second coolant passage in communication with the first coolant passage, a pump to circulate the coolant, a first tank joined to one end of each of the pipes, and a second tank to join another end of each of the pipes to the pump. The radiator is provided on the cold plate, and the pump is adjacent to the second tank.

公开(公告)号：US11136988B2

公开(公告)日：2021-10-05

申请号：US16787276

申请日：2020-02-11

Applicant: Nidec Corporation

Inventor： Kazuhiko Fukushima ,  Takehito Tamaoka

IPC: F16C32/06 ,  F04D25/06 ,  F04D29/05 ,  F04D19/00 ,  F04D29/056

Abstract: A gas dynamic bearing includes a shaft extending along a central axis extending vertically, and a sleeve with a hole opening at least at one end of the sleeve in an axial direction, at least a portion of the shaft housed inside the hole. The sleeve includes dynamic pressure grooves in an inner peripheral surface of the hole. The shaft includes a core portion, and a protective portion that is disposed on an outer peripheral surface of the core portion and that includes at least a portion facing the inner peripheral surface of the hole in a radial direction. The protective portion includes a first protective portion and a second protective portion. The first protective portion is at least above or below the second protective portion in the axial direction, and includes at least a portion with a thickness in the radial direction more than a thickness of the second protective portion in the radial direction.

公开(公告)号：US10917995B2

公开(公告)日：2021-02-09

申请号：US16689177

申请日：2019-11-20

Applicant: Nidec Corporation

Inventor： Toshihiko Tokeshi ,  Nobuya Nakae ,  Takehito Tamaoka

IPC: F28D15/00 ,  H05K7/20 ,  H01L23/473 ,  B23P15/26 ,  H01L23/367

Abstract: A cooling device includes: a cold plate; a radiator; a pump; a first tank; and a second tank. The cold plate has a first cooling medium flow passage. The radiator has fins and pipes forming a second cooling medium flow passage. The pump circulates a cooling medium. The first tank is coupled to one ends of the pipes. The second tank couples the other ends of the pipes to the pump. The radiator is disposed on the cold plate. The cold plate has a bottom wall portion, a top wall portion, a side wall portion, an internal space, an inlet port, and an outlet port. The bottom wall portion has blades, and an inner peripheral wall of the side wall portion has a first bent portion.

公开(公告)号：US20190040871A1

公开(公告)日：2019-02-07

申请号：US16154911

申请日：2018-10-09

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka

IPC: F04D29/32 ,  F04D29/38 ,  F04D25/08 ,  F04D29/28 ,  F04D29/30 ,  G06F1/20 ,  F04D25/06 ,  F04D29/42 ,  F04D29/58 ,  F04D29/056 ,  H05K7/20

Abstract: A fan includes an impeller and a metallic base portion. The base portion is arranged to be in thermal contact with a heat source. The impeller includes a resin portion including a plurality of blades, and a metal plate. In addition, the metal plate includes a flat plate portion arranged below the blades. A lower surface of the flat plate portion and an upper surface of the base portion are arranged axially opposite to each other with a gap intervening therebetween. An axial dimension of the gap is arranged to be 200 □m or less at least at a portion of the gap. Heat of the heat source is transferred to the metal plate through radiation from the base portion. Then, an air current produced by the impeller absorbs the heat from the metal plate. The heat generated from the heat source is thus efficiently discharged to an outside.

公开(公告)号：US10125786B2

公开(公告)日：2018-11-13

申请号：US14816768

申请日：2015-08-03

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka

IPC: F04D29/32 ,  F04D29/28 ,  F04D25/08 ,  F04D29/38 ,  F04D29/30 ,  F04D25/06 ,  G06F1/20 ,  F04D29/58 ,  F04D29/056 ,  F04D29/42 ,  H05K7/20

Abstract: A fan includes an impeller and a metallic base portion. The base portion is arranged to be in thermal contact with a heat source. The impeller includes a resin portion including a plurality of blades, and a metal plate. In addition, the metal plate includes a flat plate portion arranged below the blades. A lower surface of the flat plate portion and an upper surface of the base portion are arranged axially opposite to each other with a gap intervening therebetween. An axial dimension of the gap is arranged to be 200 μm or less at least at a portion of the gap. Heat of the heat source is transferred to the metal plate through radiation from the base portion. Then, an air current produced by the impeller absorbs the heat from the metal plate. The heat generated from the heat source is thus efficiently discharged to an outside.

公开(公告)号：US20180238338A1

公开(公告)日：2018-08-23

申请号：US15900129

申请日：2018-02-20

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka ,  Masashi Hirayama ,  Naruyuki Horaitani ,  Shun Hirano ,  Takayuki Ito

IPC: F04D29/28 ,  F04D25/06 ,  F04D29/30 ,  F04D29/42 ,  F04D29/66

CPC classification number: F04D29/283 ,  F04D25/06 ,  F04D25/0606 ,  F04D29/282 ,  F04D29/30 ,  F04D29/4226 ,  F04D29/666 ,  G06F1/203 ,  H05K7/20136

Abstract: A blower apparatus includes an impeller arranged to be capable of rotating about a central axis extending in a vertical direction, and a motor arranged to drive the impeller. The impeller includes a plurality of blade portions arranged in a circumferential direction, and a flange portion arranged to have the blade portions arranged on an outer peripheral portion thereof on a radially outer side. At least one of the blade portions includes a shoulder portion at an end portion thereof on a radially inner side and on one axial side. The shoulder portion includes a first end surface arranged to face to the one axial side, a second end surface arranged to face to the one axial side and arranged on another axial side of the first end surface, and a third end surface arranged to join an inner end portion of the first end surface on the radially inner side and an outer end portion of the second end surface on the radially outer side to each other.

公开(公告)号：US20170023019A1

公开(公告)日：2017-01-26

申请号：US15283807

申请日：2016-10-03

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka ,  Kazuhiko Fukushima

IPC: F04D29/58 ,  G06F1/20 ,  F04D29/28 ,  F04D25/06 ,  F04D29/42

CPC classification number: F04D29/5853 ,  F04D17/16 ,  F04D25/0613 ,  F04D25/062 ,  F04D29/281 ,  F04D29/422 ,  F04D29/4226 ,  G06F1/203

Abstract: A blower fan includes a lower plate portion made of a material having a thermal conductivity of 1.0 W/(m·K) or more, and a side wall portion made of a material having a thermal conductivity of 1.0 W/(m·K) or more. An upper plate portion arranged to cover an upper side of the impeller includes an air inlet. The upper plate portion, the side wall portion, and the lower plate portion are arranged to together define an air outlet on the lateral side of the impeller. The blower fan further includes a heat source contact portion with which a heat source is to be in contact, the heat source contact portion being arranged in a surface of the blower fan which faces away from the impeller. The heat source contact portion and the tongue portion are arranged to at least partially overlap with each other in the plan view.

Abstract translation: 鼓风扇包括由热导率为1.0W /（m·K）以上的材料制成的下板部和由导热率为1.0W /（m·K）的材料制成的侧壁部， 或者更多。 布置成覆盖叶轮的上侧的上板部分包括空气入口。 上板部分，侧壁部分和下板部分布置成一起限定了在叶轮的侧面上的空气出口。 鼓风机还包括热源接触部分，热源接触部分，热源接触部分布置在鼓风机的远离叶轮的表面。 在平面图中，热源接触部分和舌部被布置成至少部分地彼此重叠。

公开(公告)号：US20160037683A1

公开(公告)日：2016-02-04

申请号：US14709803

申请日：2015-05-12

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka ,  Koji Hatanaka ,  Kiyoto Ida

IPC: H05K7/20

CPC classification number: H01L23/467 ,  H01L23/367 ,  H01L23/3672 ,  H01L23/42 ,  H01L23/427 ,  H01L2924/0002 ,  H05K7/20336 ,  H01L2924/00

Abstract: A heat module includes a fan, a heat sink, a heat transfer member, and a plurality of connection portions. The heat transfer member includes a lower surface capable of being in thermal contact with a heat source, and an upper surface thermally connected to the heat sink, and is arranged to overlap with at least a portion of the fan in a plan view. The plurality of connection portions are arranged between the heat transfer member and the housing to define an axial gap between an upper surface of the heat transfer member and a lower surface of the lower plate portion. The heat transfer member includes a heat source contact portion arranged on a side, closer to the fan, of an end portion of the fan at which the air outlet is defined.

Abstract translation: 热模块包括风扇，散热器，传热构件和多个连接部分。 传热构件包括能够与热源热接触的下表面和与散热器热连接的上表面，并且布置成在俯视图中与风扇的至少一部分重叠。 多个连接部分布置在传热构件和壳体之间以限定传热构件的上表面和下板部分的下表面之间的轴向间隙。 传热构件包括布置在风扇的靠近风扇的一侧的热源接触部，风扇的端部限定在该端部处。

公开(公告)号：US20140178186A1

公开(公告)日：2014-06-26

申请号：US14030633

申请日：2013-09-18

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka ,  Kazuhiko Fukushima ,  Kyoko Horise ,  Shinya Ishigami ,  Takahiro Nagai

IPC: F04D29/40

CPC classification number: F04D29/422 ,  F04D17/16 ,  F04D25/0613

Abstract: In a blower fan according to a preferred embodiment of the present invention, a side wall portion includes a tongue portion arranged to project between an air outlet and an impeller. A side surface of the tongue portion includes a tongue portion tip arranged to touch a first imaginary plane including a central axis; a first tongue portion side surface arranged to extend from the tongue portion tip along an outer envelope of the impeller; and a second tongue portion side surface arranged to extend from the tongue portion tip toward a side edge, the side edge being a line of intersection of the air outlet and the side wall portion. The second tongue portion side surface is arranged to cross a second imaginary plane including the central axis and touching the side edge.

Abstract translation: 在根据本发明的优选实施例的鼓风机中，侧壁部分包括设置成在空气出口和叶轮之间突出的舌部。 舌部的侧表面包括设置成接触包括中心轴线的第一假想平面的舌部末端; 第一舌部侧面，其布置成沿着叶片的外封套从舌部延伸; 以及第二舌部侧面，其设置成从舌部朝向侧缘延伸，所述侧缘是所述排气口与所述侧壁部的交线。 第二舌部侧表面布置成穿过包括中心轴线并且接触侧边缘的第二假想平面。