公开(公告)号：US20220057124A1

公开(公告)日：2022-02-24

申请号：US17358071

申请日：2021-06-25

Applicant: Nidec Corporation

Inventor： Yoshihisa KITAMURA ,  Takaya OKUNO ,  Toshihiko TOKESHI ,  Takehito TAMAOKA ,  Akihiko MAKITA

IPC: F25B41/40

Abstract: A liquid feeder switches a flow path of a liquid having flowed in from an inflow port to one of a flow path communicating with a first base communication port and a bypass outflow path. When a pump is attached to a base, the bypass outflow path is closed to allow the liquid having flowed in from the inflow port to flow to the pump. When the pump is removed from the base, the bypass outflow path is opened to allow the liquid having flowed in from the inflow port to flow from the bypass outflow path to the outflow port. The liquid feeder is able to prevent liquid leakage when a pump of a liquid feeder is replaced or repaired.

公开(公告)号：US20220057123A1

公开(公告)日：2022-02-24

申请号：US17358066

申请日：2021-06-25

Applicant: Nidec Corporation

Inventor： Toshihiko TOKESHI ,  Takahiro IMANISHI ,  Yoshihisa KITAMURA ,  Takehito TAMAOKA

IPC: F25B41/40

Abstract: A liquid feeder includes a pump which is prevented from idling, and a replenisher including a cylinder that is a bottomed tube including an opening on a side adjacent to a communication flow path, the opening being connected to the communication flow path, and that is capable of accommodating a liquid in at least a portion of the cylinder, a seal that is housed in the cylinder in a movable manner along the cylinder, and seals the liquid in the cylinder, and a pressurizer to pressurize the seal toward a pump chamber.

公开(公告)号：US20220026137A1

公开(公告)日：2022-01-27

申请号：US17348867

申请日：2021-06-16

Applicant: Nidec Corporation

Inventor： Takaya OKUNO ,  Toshihiko TOKESHI ,  Takehito TAMAOKA

IPC: F25D17/02 ,  F25D11/02 ,  F25D23/06

Abstract: A cooler includes a cold plate to absorb heat from a heat source into coolant, a housing filled with the coolant and located on an upper side of the cold plate in a first direction X, and a partition located on a lower side in the housing. An inflow port and an outflow port are provided on one side in a second direction Y perpendicular or substantially perpendicular to the first direction X. The cold plate includes a first plate chamber and a second plate chamber in which the coolant flows between the cold plate and the partition. The partition includes a first through-hole communicating with the first plate chamber. The first plate chamber is farthest from the inflow port to the other side in the second direction Y. The housing includes a communication flow path allowing the inflow port to communicate with the first through-hole.

公开(公告)号：US20210282298A1

公开(公告)日：2021-09-09

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

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：US20210136958A1

公开(公告)日：2021-05-06

申请号：US17147502

申请日：2021-01-13

Applicant: Nidec Corporation

Inventor： Toshihiko TOKESHI ,  Nobuya NAKAE ,  Takehito TAMAOKA

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

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：US20200309140A1

公开(公告)日：2020-10-01

申请号：US16787276

申请日：2020-02-11

Applicant: Nidec Corporation

Inventor： Kazuhiko FUKUSHIMA ,  Takehito TAMAOKA

IPC: F04D25/06 ,  F16C32/06

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：US20190390678A1

公开(公告)日：2019-12-26

申请号：US16413723

申请日：2019-05-16

Applicant: Nidec Corporation

Inventor： Takehito TAMAOKA ,  Masashi HIRAYAMA

IPC: F04D25/06 ,  F04D29/42 ,  F04D29/62

Abstract: A centrifugal fan includes a motor, an impeller that rotates together with a rotating portion of the motor, and a housing that houses the motor and the impeller. The housing includes a cover extending perpendicularly to the center axis on the upper side of the impeller, a base extending perpendicularly to the center axis on the lower side of the impeller, a side wall connecting the cover and the base in the axial direction on the radially outer side of the impeller and defining an air blowing port together with the cover and the base in a portion of the circumferential direction, and an air inlet penetrating in the axial direction on the radially inner side of a radially outer end portion of the impeller. At least one of the base and the cover includes at least one hole penetrating in the axial direction on the radially outer side of the radially outer end portion of the impeller, and a seal that seals the hole. The specific gravity of the seal is smaller than the specific gravity of either the base or the cover, which has the hole.

公开(公告)号：US20190195231A1

公开(公告)日：2019-06-27

申请号：US16203701

申请日：2018-11-29

Applicant: Nidec Corporation

Inventor： Kiyoto IDA ,  Masashi HIRAYAMA ,  Takehito TAMAOKA

IPC: F04D17/16 ,  F04D29/26 ,  F04D29/28 ,  F04D25/06

CPC classification number: F04D17/16 ,  F04D25/0606 ,  F04D29/263 ,  F04D29/281 ,  F05B2240/301 ,  F05B2260/302

Abstract: A centrifugal fan includes a motor, an impeller, and a housing. The motor includes a rotary portion that rotates about a vertical center axis. The impeller is fixed to and rotates together with the rotary portion. The housing accommodates the motor and impeller. The rotary portion includes a rotor holder with a magnet. The impeller includes circumferentially disposed blades and a blade support. The blade support supports the blades on an outer side. The housing includes an inlet port axially penetrating an upper surface and an outlet port radially penetrating a side surface. At least a portion of an inner surface of the blade support radially faces an outer surface of the rotor holder with a gap therebetween containing adhesive at least partially. At least one of the outer surface of the rotor holder and the inner surface of the blade support includes a radially recessed portion containing adhesive.

公开(公告)号：US20240200891A1

公开(公告)日：2024-06-20

申请号：US18537976

申请日：2023-12-13

Applicant: Nidec Corporation

Inventor： Yoshihisa KITAMURA ,  Toshihiko TOKESHI ,  Takehito TAMAOKA

IPC: F28F9/26

CPC classification number: F28F9/262

Abstract: A cooling device includes a pump assembly to circulate a refrigerant, a tank to accommodate the refrigerant, and a heat exchanger to cool the refrigerant circulating in the tank and the pump assembly. The pump assembly and the tank are connected via a first flow path having a tubular shape. An end portion positioned on a vertically upper side of the tank is above an end portion on a vertically upper side of the pump assembly. One end portion of the first flow path is connected to a surface facing a vertically lower portion of the tank.

公开(公告)号：US20230389226A1

公开(公告)日：2023-11-30

申请号：US18202321

申请日：2023-05-26

Applicant: Nidec Corporation

Inventor： Keisuke KAWATA ,  Toshihiko TOKESHI ,  Takehito TAMAOKA

IPC: H05K7/20

CPC classification number: H05K7/20254

Abstract: A cold plate includes an opposing portion, a cover portion, and a heat exchange chamber. The opposing portion opposes a heat generating component on one side in a first direction. The cover portion is arranged on another side of the opposing portion in the first direction. The heat exchange chamber includes at least the opposing portion and the cover portion to conduct heat from the heat generating component to a refrigerant through the opposing portion. The opposing portion includes a first cooling surface and a second cooling surface. The first cooling surface is provided on the one side in the first direction. The second cooling surface is provided on the one side in the first direction. The second cooling surface is spaced away from the first cooling surface in the first direction.