Nidec Corporation

Akihiko Makita

Tomoyuki Tsukamoto

Seung-Sin Yoo

Yuko Hino

Takehito Tamaoka

Toshihiko Tokeshi

Nobuya Nakae

Hidenobu Takeshita

Tomotsugu Sugiyama

Takahiro Imanishi

Yoshihisa Kitamura

Takaya Okuno

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.

Liquid feeder

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.

Cooling device

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.

Cooling apparatus

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 a second coolant passage in which the coolant flows, and a pump connected to each of the first coolant passage and the second coolant passage to circulate the coolant. The radiator is provided on the cold plate. The pump is adjacent to the radiator.

Radiative cooling device with liquid pump

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; a clamper portion fixed to the motor portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. The air blowing portion is held by the motor portion and the clamper portion from upper and lower sides in the axial direction. Once the air blowing portion starts rotating, an air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force.

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates; a motor portion; and a housing. The housing includes an air inlet and an air outlet. At least one of the flat plates includes an inner annular portion, an outer annular portion arranged radially outside of the inner annular portion, ribs each of which is arranged to join the inner and outer annular portions to each other, and air holes each of which is surrounded by the inner and outer annular portions and circumferentially adjacent ones of the ribs. With the inner annular portion and the outer annular portion being joined to each other through the ribs, an increase in the opening area of each air hole, which is defined between the inner and outer annular portions, can be achieved. This leads to improved air intake efficiency, resulting in improved air blowing efficiency.

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. At least one of the flat plates includes, in at least one of an upper surface and a lower surface thereof, a plurality of guide portions each of which is a protruding portion or recessed portion arranged to extend in a radial direction. An air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force. Since the air flow is generated between the flat plates, the air flow does not easily leak upwardly or downwardly.

This blower apparatus includes an air blowing portion, a motor portion, and a housing. The housing includes an air inlet and an air outlet. The air blowing portion includes a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; and a spacer arranged between the flat plates. A rotating portion of the motor portion includes a hub including a flat plate holding portion arranged to hold at least one of the flat plates. An air flow is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force. With the spacer being arranged between the flat plates, the axial gap can be adjusted. Since at least one of the flat plates is held by the flat plate holding portion, the air blowing portion is able to stably rotate.

This blower apparatus includes an air blowing portion, a motor portion, and a housing. The housing includes an air inlet and an air outlet. At least one of the flat plates includes an air hole. Once the air blowing portion starts rotating, an air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force. Since the air flow is generated between the flat plates, the air flow does not easily leak upwardly or downwardly, and thus, an improvement in air blowing efficiency is achieved. Since the air hole is defined in the flat plate(s), gas can be easily supplied to the axial gap, resulting in improved air blowing efficiency. In addition, with each spacer being arranged between the flat plates, the axial gap can be adjusted to have a desired axial dimension.

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Kyoto, Japan

Akihiko Makita