Other

Hitachi, Ltd.

Shigemi Ota

Takashi Moriyama

Shinji Matsushita

A rack-mount server system of a liquid cooling system, in which a heat-generating component such as a CPU is cooled by a coolant has a plurality of server modules with heat-generating components which are cooled by the circulating coolant. The server modules are connected in parallel to a circulation coolant path through which the coolant to cool the server modules is circulated. In the middle of the coolant circulation path is a cooling unit that cools the coolant by radiating its heat to the outside air. Furthermore, a bypass route parallel to the server modules and going around the server modules is provided in the coolant circulation path, and the circulation quantity of the coolant is controlled in the bypass route. Alternatively, the flow quantity of the coolant is controlled in each of the server modules.

Liquid cooling system for a rack-mount server system

A cooling apparatus is constructed wherein, a fan box is provided with a plurality of suction openings and exhaust openings formed on a suction main surface and an exhaust main surface opposite to each other, a plurality of fan units each comprising a multi-blade fan and a suction duct disposed in different positions in a inserting direction are alternately arranged in an axial direction of the multi-blade fan so as to be able to insert and drawn out, and the fan unit is configured so that a suction duct thereof operates as a suction passage for the multi-blade fans of the next fan unit by communicating a fan suction opening with the suction opening through the suction duct and communicating a fan exhaust opening with the exhaust opening.

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Fujisawa, Japan

Shigemi Ota