Fujitsu Corporation

Keita Hirai

Tsuyoshi So

Naofumi Kosugi

Hideo Kubo

Nobumitsu Aoki

Atsushi Endo

Takashi Urai

Osamu Aizawa

Kenji Sasabe

Shinnosuke Fujiwara

Masahide Kodama

Koji Nakagawa

Kento Ohga

Masayuki Watanabe

Yoshinori Uzuka

Yuki Kanai

Yoshimi Maekawa

Yukihiro Hirano

Shinobu Harada

Youichi Yokota

A liquid cooling module includes a heat-receiver, an inlet-passage in which a flow-path through which the liquid-refrigerant flowed from an inlet flows is formed, a first flow-passage in which the flow-path continues from the inlet-passage, and that is formed as spreading in a fan-like shape as viewed in a normal-direction of a heat-receiving-surface, a second flow-passage in which the flow-path continues from the first flow-passage, and that is formed toward the heat-receiver in the normal-direction, a diffuser in which grooves that continue from the second flow-passage in the heat-receiver and diffuses the liquid-refrigerant along a surface on an opposite side of the heat-receiving-surface is formed, a third flow-passage in which the flow-path continues from the grooves, and that is formed in the normal-direction and a direction in which the flow-path is separating from the heat-receiver, and an outlet-passage in which the flow-path continues from the third flow-passage to an outlet.

Liquid cooling module

A cooling device includes: a container in which a refrigerant is sealed; an evaporating part that evaporates the refrigerant in a liquid phase by heat reception inside the container; a condensing part that condenses the refrigerant in a gas phase by heat dissipation inside the container; and a plate-shaped or block-shaped flow path member in which a plurality of flow paths configured to transport the refrigerant in a liquid phase from the condensing part to the evaporating part by surface tension inside the container is formed in parallel.

Cooling device

A liquid immersion tank includes a housing configured to house a heat generator, a gutter provided over the housing, and configured to form a flow path through which a coolant flows, a flow rate adjuster provided at an outflow port through which the coolant flows out from the flow path, and configured to adjust an outflow amount of the coolant, a slope provided over the housing, and configured to include a down-flow surface through which the coolant branched from the flow path flows down toward the housing, the coolant flowing through the flow rate adjuster, and a tank configured to accommodate the housing.

Liquid immersion tank

A cooling device includes: an inner tank configured to store a first coolant which is a liquid; a separation wall that is provided in the inner tank, that faces a side wall portion of the inner tank, that forms an accommodating portion in which an electronic device to be immersed in the first coolant is accommodated, and that forms, at at least part of a periphery of the accommodating portion, a coolant channel through which the first coolant is to flow toward a lower side of the inner tank; an outer tank which is disposed outside the inner tank and through which a second coolant flows; and a heat transfer unit that is provided between the inner tank and the outer tank and that is configured to transfer heat from the first coolant to the second coolant.

Cooling device, cooling system, and method of cooling

A liquid immersion cooling apparatus includes a first receptacle in which a refrigerant liquid is accommodated, configured to include a first tank having a first sidewall, a first lid configured to cover the first tank, and a first space provided between the refrigerant liquid and the first lid, a second receptacle in which a sealing material is accommodated, configured to include a second tank having a second sidewall facing the first sidewall, a second lid configured to cover the second tank, a second space provided between the sealing material and the second lid, and configured to communicate with the first space, and a third space provided between the sealing material and the second lid, partitioned from the second space, and configured to communicate with an outside, and a heat insulator provided between the first sidewall and the second sidewall.

Liquid immersion cooling apparatus

A cooling apparatus includes an immersion-tank configured to store a refrigerant, a refrigerant suction port formed at a lower portion of the immersion-tank, the refrigerant suction port being configured to suck the refrigerant from an outside of the immersion-tank into an inside of the immersion-tank, an electronic device immersed in the refrigerant, the electronic device including, a first heat-generation portion, a second heat-generation portion having a heat-generation amount smaller than a heat-generation amount of the first heat-generation portion, and a refrigerant inlet positioned below the first heat-generation portion and the second heat-generation portion and being open downward, and a block positioned below the first heat-generation portion and the second heat-generation portion, the block including a through-hole through which a region positioned below the first heat-generation portion in the refrigerant inlet is open, and a closing portion that closes a region positioned below the second heat-generation portion in the refrigerant inlet.

Cooling apparatus

A manifold includes: a branch pipe including an inflow port and a plurality of outflow ports; and a partition wall that partitions an inside of the branch pipe into a side of the inflow port and a side of the plurality of outflow ports and includes: a plurality of through-holes that have a total opening area greater than an opening area of the inflow port; and a plurality of first facing portions that face the respective outflow ports.

Manifold and information processing apparatus

An information processing apparatus includes a plurality of electronic apparatus stacked over a plurality of hierarchies in the information processing apparatus, a heat exchanger that cools refrigerant liquid for cooling the plurality of electronic apparatus, a first distributor that distributes the refrigerant liquid from the heat exchanger to the plurality of hierarchies, a plurality of second distributor that stores the refrigerant liquid temporarily, and a plurality of pipes that branched from the distribution pipes to the plurality of the electronic apparatus, wherein the number of the second distributor increases toward a hierarchy on downstream side, the pipes of the last hierarchy are coupled to the electronic apparatus.

Information processing apparatus

An information processing apparatus includes a power supply, a fan that causes air to flow into the power supply, and a power distributor that is disposed in front of or in back of the power supply in a direction of flow of the air due to the fan and that is electrically coupled to the power supply, wherein a vent through which the air passes is formed in a surface of the power distributor that faces the power supply.

Air cooling arrangment for a power distributor

A rack mount-type information processing apparatus includes: a plurality of slots, into each of which an electronic device is inserted, a liquid-cooled element provided in a cooling target included in the electronic device, a liquid to cool the cooling target being circulated in the liquid-cooled element; a manifold pipe extending in a direction where the slots are arranged; and a plurality of connection pipes configured to interconnect the liquid-cooled element and the manifold pipe, and coupled in parallel to the manifold pipe at a portion of the manifold pipe which corresponds to at least one slot among the plurality of slots.

Rack mount-type information processing apparatus and rack mount-type information processing system

A cooling system includes an immersion tank that includes a liquid coolant sealed therein, a housing that includes through-holes formed in a top portion and a bottom portion thereof, respectively, and disposed within the immersion tank, an electronic device disposed in the housing in a state of being immersed in the coolant, a coolant flow path formed between an inner surface of the immersion tank and an outer surface of the housing to couplet he through-hole in the top portion of the housing to the through-hole in the bottom portion of the housing so that the coolant flows therethrough, and a heat transfer member that transports heat of the coolant in the coolant flow path to an outside of the immersion tank.

Cooling system and method of cooling electronic device

A liquid immersion bath includes: a liquid immersion bath main body in which liquid coolant and an electronic device to be immersed in the coolant are placed; a coolant inlet and a coolant outlet provided to the liquid immersion bath main body; a coolant discharge port which floats on a liquid surface of the liquid coolant in the liquid immersion bath main body; and a hose which couples the coolant outlet and the coolant discharge port and bends in accordance with a movement of the coolant discharge port due to variation in a height of the liquid surface.

Liquid immersion bath and liquid immersion cooling apparatus

An immersion cooling apparatus includes: a refrigerant tank configured to store a non-boiling fluorine-based insulating refrigerant in which an electronic device is to be immersed; a circulation passage of the fluorine-based insulating refrigerant that is located between the refrigerant tank and a refrigerant cooling device; and a sealed pump that is arranged in the circulation passage, is configured to seal a rotor shaft with an impeller and a bearing portion for the rotor shaft in a sealed case while the rotor shaft and the bearing portion are immersed in the fluorine-based insulating refrigerant, and is configured to circulate the fluorine-based insulating refrigerant between the refrigerant tank and the refrigerant cooling device.

Immersion cooling apparatus

An information processing device includes: one or more information processing device main bodies; a first heat exchanger configured to cool air to be introduced into the one or more information processing device main bodies; an air blower configured to introduce the air into the one or more information processing device main bodies; an evaporator through which discharged air discharged from the one or more information processing device main bodies passes; a receiving pan configured to receive water generated by dew condensation in the first heat exchanger; and a water supply member configured to supply the water in the receiving pan to the evaporator.

Growing community of inventors

Kawasaki, Japan

Keita Hirai