公开(公告)号：US12178008B2

公开(公告)日：2024-12-24

申请号：US17857200

申请日：2022-07-05

Applicant: Nidec Corporation

Inventor： Takehito Tamaoka ,  Takahiro Imanishi

IPC: H05K7/00 ,  H02K5/22 ,  H02K11/33 ,  H05K7/20

Abstract: A cooling apparatus includes a cold plate made of a metal, a casing, a pump, a ground wire, and a conductive component. The pump includes a motor to drive an impeller, and a circuit board to control the motor. The circuit board is connected to the ground wire. The conductive component electrically connects the cold plate to the ground wire.

公开(公告)号：US11994332B2

公开(公告)日：2024-05-28

申请号：US17381253

申请日：2021-07-21

Applicant: Nidec Corporation

Inventor： Takaya Okuno ,  Toshihiko Tokeshi ,  Takehito Tamaoka

IPC: F28F3/02 ,  F25D11/02 ,  F25D17/02 ,  F25D23/06 ,  F28F3/12 ,  H05K7/20

CPC classification number: F25D17/02 ,  F25D11/02 ,  F25D23/069 ,  F28F3/02 ,  F28F3/12 ,  H05K7/20254 ,  H05K7/20272

Abstract: A cooling assembly includes a cold plate in contact with a heat generating component, a housing on one side of the cooling assembly in a first direction with respect to the cold plate, a first wall located between the housing and the cold plate, and a second wall separating a plate chamber defined by the housing and the first wall into a first plate chamber and a second plate chamber adjacent to each other in a second direction orthogonal to the first direction. The first wall includes a first through hole opposing the cold plate in the first plate chamber and a second through hole opposing the cold plate in the second plate chamber.

公开(公告)号：US11841183B2

公开(公告)日：2023-12-12

申请号：US17846134

申请日：2022-06-22

Applicant: Nidec Corporation

Inventor： Toshihiko Tokeshi ,  Takehito Tamaoka ,  Nobuya Nakae

IPC: F25D17/02 ,  F25D31/00

CPC classification number: F25D17/02 ,  F25D31/00

Abstract: A cooling unit includes a cold plate extending in a horizontal direction, a tank defining a tank chamber that stores a refrigerant, the tank including an outer tank surface and an inner tank surface, and a pump defining a pump chamber, the pump including an outer pump surface and an inner pump surface. The pump chamber is spaced away from and outside of the tank chamber. A portion of the outer tank surface and a portion of the outer pump surface are directly adjacent to one another in the horizontal direction. The pump chamber accommodates a rotating body that transfers the refrigerant. An upper end of the tank chamber in a first direction perpendicular to the horizontal direction is positioned higher than an upper end of the pump chamber in the first direction.

公开(公告)号：US11523540B2

公开(公告)日：2022-12-06

申请号：US17147502

申请日：2021-01-13

Applicant: Nidec Corporation

Inventor： Toshihiko Tokeshi ,  Nobuya Nakae ,  Takehito Tamaoka

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

Abstract: A cooling device includes a cooling plate with a bottom wall portion with a lower surface which contacts a heat-generating component, a top wall portion which covers an upper surface of the bottom wall portion, a side wall portion which couples the bottom wall portion and the top wall portion, and an internal space which is surrounded by the bottom wall portion, the top wall portion, and the side wall portion to define a first cooling medium flow passage. The bottom wall portion includes blades on the upper surface. An inlet port or an outlet port is on one end side of the first cooling medium flow passage. An inner peripheral wall of the side wall portion includes a first bent portion which is bent convex inward between ends of the blades and the at least one of the inlet port and the outlet port.

公开(公告)号：US11497148B2

公开(公告)日：2022-11-08

申请号：US17198759

申请日：2021-03-11

Applicant: Nidec Corporation

Inventor： Toshihiko Tokeshi ,  Takehito Tamaoka ,  Nobuya Nakae

IPC: H05K7/20

Abstract: A cooling device includes a cooling assembly which includes a cold plate extending in a first direction, a pump and a tank on one side of the cold plate in a second direction perpendicular to the first direction, and a partition extending in the first direction and covering the cold plate on one side in the second direction. The cold plate and the partition define a first refrigerant flow path through which a refrigerant flows. The pump includes a pump chamber in which an impeller is housed, the impeller moving the refrigerant. The tank includes a tank chamber in which the refrigerant flows. The pump chamber and the tank chamber communicate with each other through a first tank hole portion. The partition includes a first hole portion through which the first refrigerant flow path and the tank chamber communicate. The first tank hole portion is provided on one side in the first direction with respect to the first hole portion.

公开(公告)号：US10859093B2

公开(公告)日：2020-12-08

申请号：US15875081

申请日：2018-01-19

Applicant: NIDEC CORPORATION

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

IPC: F04D29/30 ,  F04D29/28 ,  F04D29/42 ,  F04D25/06 ,  F04D25/02 ,  F04D17/16

Abstract: A blower includes an impeller rotatable about a central axis, a motor that drives the impeller, and a housing that accommodates the impeller and the motor. The impeller includes a plurality of vanes arrayed in a circumferential direction and a flange in which the plurality of vanes are provided at an outer circumferential edge on a radially outer side. The housing includes a first housing that faces a vane lower end surface located on an axial-direction lower side of the vane with a gap interposed therebetween. The vane lower end surface includes a first vane end surface in which a shortest distance to the first housing in an axial direction increases toward the radially outer side.

公开(公告)号：US10677258B2

公开(公告)日：2020-06-09

申请号：US15875134

申请日：2018-01-19

Applicant: NIDEC CORPORATION

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

IPC: F04D29/28 ,  F04D25/08 ,  F04D29/42 ,  F04D29/30 ,  F04D17/16 ,  F04D29/66 ,  G06F1/20 ,  H05K7/20 ,  H01L23/467 ,  F04D25/06

Abstract: The blowing device includes an impeller that is rotatable about a center axis and a motor that drives the impeller. The impeller includes a plurality of vanes arranged in a circumferential direction, a flange in which the plurality of vanes are provided at the outer circumferential edge in a radial-direction outside, and a plate-shaped first shielding unit located between the vanes adjacent to each other in the circumferential direction. The first shielding unit is connected to a rear edge surface on an opposite side to the rotation direction of the vane and an outside surface located on the radial-direction outside of the flange.

公开(公告)号：US10161405B2

公开(公告)日：2018-12-25

申请号：US14483843

申请日：2014-09-11

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka ,  Kazuhiko Fukushima

IPC: F04D25/06 ,  F04D25/08 ,  F04D17/16 ,  F04D29/057

Abstract: A cooling apparatus includes an impeller, a motor, a base portion, and a motor circuit board. The impeller includes a plurality of blades and a blade support portion. Of the plurality of blades, at least one pair of circumferentially adjacent blades are arranged to have a channel defined therebetween, the channel extending from axially upper edges to axially lower edges of the blades, and being arranged to be open toward the upper surface of the base portion. The base portion includes a heat source contact portion with which a heat source is to be in contact. At least one of the blades includes a blade edge opposed portion having an axially lower edge arranged opposite to the upper surface of the base portion. An outermost edge portion of the motor circuit board is arranged radially inward of a radially inner end portion of the blade edge opposed portion.

公开(公告)号：US10068833B2

公开(公告)日：2018-09-04

申请号：US14709803

申请日：2015-05-12

Applicant: Nidec Corporation

Inventor： Takehito Tamaoka ,  Koji Hatanaka ,  Kiyoto Ida

IPC: H05K7/20 ,  H01L23/467 ,  H01L23/427 ,  H01L23/42 ,  H01L23/367

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.

公开(公告)号：US20180238340A1

公开(公告)日：2018-08-23

申请号：US15897621

申请日：2018-02-15

Applicant: NIDEC CORPORATION

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

IPC: F04D29/30 ,  F04D25/06 ,  F04D25/08 ,  F04D29/66 ,  F04D29/28 ,  F04D29/42 ,  G06F1/20

CPC classification number: F04D29/30 ,  F04D25/06 ,  F04D25/0606 ,  F04D25/08 ,  F04D29/282 ,  F04D29/4226 ,  F04D29/666 ,  G06F1/203

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 plurality of blade portions arranged on an outer peripheral portion thereof on a radially outer side. Each blade portion includes a trailing edge surface arranged on a rearward side of the blade portion with respect to a rotation direction of the impeller in the circumferential direction, and a leading edge surface arranged on a forward side of the blade portion with respect to the rotation direction in the circumferential direction. The trailing edge surface includes at least one recessed portion recessed forward with respect to the rotation direction.