Abstract: A heat conductive fluid is interposed between an electronic component and a heat sink. The heat conductive fluid serves to enhance the contact between the surface of the electronic component and the opposed surface of the heat sink. The heat conductive fluid also exhibits the property of adsorption between a pair of surfaces based on the fluidity of the heat conductive fluid itself. Although the adsorption allows the slippage of the heat sink along the surface of the electronic component, the adsorption reliably restrains the heat sink from moving in the perpendicular direction perpendicular to the surface of the electronic component. The atmospheric pressure solely acts on the heat sink so as to urge the heat sink against the surface of the electronic component. No excessive urging force is applied to the electronic component.

Abstract: In an electronic device that contains a cooling system in which the refrigerant circulates through both the base and the heat-radiator and the heat-radiator is installed away from and to the side of the heat-generator, the heat-generator is positioned on top of the base. This means that the height of the base in the electronic device becomes relatively low, and so the height of the heat-radiator—which must be installed above the height of the base—can be increased, meaning that the required heat-radiating region can be secured and high-performance cooling becomes possible.

Abstract: An electronic apparatus including a motherboard, a plurality of multi-chip modules mounted to the motherboard and cooling members for cooling the multi-chip modules. A refrigeration unit is arranged to deliver cooling water to the cooling members. A connection structure is provided for each multi-chip module for thermally and mechanically releasably coupling each multi-chip module to the refrigeration unit.

Abstract: An electronic apparatus including a motherboard, a plurality of multi-chip modules mounted to the motherboard and cooling members for cooling the multi-chip modules. A refrigeration unit is arranged to deliver cooling water to the cooling members. A connection structure is provided for each multi-chip module for thermally and mechanically releasably coupling each multi-chip module to the refrigeration unit.

Abstract: A refrigeration system allows the refrigerant to circulate through a closed circulation channel. A dry evaporator is incorporated in the circulation channel. The dry evaporator is designed to keep a quality smaller than 1.0 in evaporating the refrigerant. The quantity of heat transfer per unit area, namely, a heat transfer coefficient depends on the quality. The heat transfer coefficient remarkably drops when the quality of the refrigerant exceeds a predetermined threshold level before the quality actually reaches 1.0. The quality of the refrigerant kept below the predetermined threshold level during vaporization of the refrigerant in the dry evaporator allows a reliable establishment of a higher performance of cooling. On the other hand, if a refrigerant completely evaporates in a dry evaporator in a conventional manner, the heat transfer coefficient of the refrigerant remarkably drops after the quality of the refrigerant exceeds the predetermined threshold level.

Abstract: An electronic apparatus includes a circuit board, a connector provided on the circuit board, an integrated circuit module attached to the connector, and a heat sink attached to the integrated circuit module. A heat transfer device is disposed at a position separate from the heat sink and arranged in a cooling air passageway. A heat conduction path thermally connects the heat sink with the heat transfer device. Since the heat transfer device can be arranged outside the frame of the apparatus, the heat transfer device can be constructed to have a sufficient cooling capacity, while the integrated circuit module and the heat sink can be constructed in a relatively compact design.

Abstract: A cooling device for a mounting module in which heat generated from a predetermined number of circuit elements mounted on the mounting module is dissipated by a cooling arrangement. The cooling device is comprised of at least one conduction element which thermally connects the circuit element with the cooling arrangement, the conduction element includes a predetermined number of first conductive members which is placed in a respective hole formed in the conduction arrangement and is movably supported by a first conductive material filled between the side surface of the first conductive member and the surface of the conduction element so as to complete a thermal flow from the circuit element to the cooling arrangement.

Abstract: A semiconductor element cooling apparatus adapted to cool at least one semiconductor element mounted on a circuit substrate. The semiconductor element cooling apparatus includes a first mechanism for generating a coolant flow by flowing a coolant over a top surface of the semiconductor element, and a second mechanism for obliquely obstructing the coolant flowing over the semiconductor element from an upstream side towards a downstream side of the coolant flow.

Abstract: In a cooling structure for cooling circuit element modules that are mounted on a circuit board and has heat sinks, there are provided a main duct to which the circuit element modules are connected, and a coolant supplying device which is connected to the main duct and supplies a coolant to the main duct.