摘要:
[Object] A cooling device for a thin electronic equipment having a larger heat radiation area and preventing leakage of refrigerant. [Means for Solving Problems] A cooling device includes first and second cooling panels (1, 2) wherein a passage (11, 21) is formed by bonding together a top heat radiation panel and a bottom heat radiation panel each having a groove therein, and a circulation pump (3) for circulating refrigerant within the passage (11, 21). In the top heat radiation panel of the second cooling panel (2) are formed an outlet port through which the refrigerant flows out from the passage (21) to the circulation pump (3) and an inlet port through which the refrigerant flows in from the circulation pump (3) to the passage (21). The circulation pump (3) is fixed onto the top heat radiation plate of the cooling panel (2) so that the suction port and discharge port are aligned with the outlet port and inlet port, respectively.
摘要:
A cooling device includes a cooling panel wherein a passage is formed by bonding together a bottom heat radiation plate having a groove formed therein and a top heat radiation plate, and a circulation pump circulating refrigerant within the passage. The top heat radiation plate is provided with an outlet port through which the refrigerant flows out from the passage to the circulation pump and an inlet port through which the refrigerant flows in from the circulation pump to the passage. The circulation pump is fixed onto the top heat radiation plate of the cooling panel so that the suction port and discharge port are aligned with the outlet port and inlet port, respectively.
摘要:
A cooling device includes a cooling panel wherein a passage is formed by bonding together a bottom heat radiation plate having a groove formed therein and a top heat radiation plate, and a circulation pump circulating refrigerant within the passage. The top heat radiation plate is provided with an outlet port through which the refrigerant flows out from the passage to the circulation pump and an inlet port through which the refrigerant flows in from the circulation pump to the passage. The circulation pump is fixed onto the top heat radiation plate of the cooling panel so that the suction port and discharge port are aligned with the outlet port and inlet port, respectively.
摘要:
The present invention provides a cooling apparatus which is easy to build and to fix it to electronic devices, superior in thermal conduction and heat dissipation, and possible to make thin the total configuration of the apparatus. The liquid cooling unit 9 and the air cooling unit 12 are formed in a unit. A heat absorption surface 19 of the liquid cooling unit 9 is contacted or bonded to the heat generation component such as the CPU and the heat generator, which have the largest power consumption and also locally generate heat within a small area in the box 2. In the liquid cooling unit 9, a liquid cooling pump 14 composed of an electromagnetic pump is arranged for circulating the coolant in the flow path 10. The heat generated by the heat generation components such as CPU 6, heat generator 7, and the like is thermally diffused with heat conduction into the whole liquid cooling unit 9 by circulating the coolant with the liquid cooling pump 14.
摘要:
The present invention provides a cooling apparatus which is easy to build and to fix it to electronic devices, superior in thermal conduction and heat dissipation, and possible to make thin the total configuration of the apparatus. The liquid cooling unit 9 and the air cooling unit 12 are formed in a unit. A heat absorption surface 19 of the liquid cooling unit 9 is contacted or bonded to the heat generation component such as the CPU and the heat generator, which have the largest power consumption and also locally generate heat within a small area in the box 2. In the liquid cooling unit 9, a liquid cooling pump 14 composed of an electromagnetic pump is arranged for circulating the coolant in the flow path 10. The heat generated by the heat generation components such as CPU 6, heat generator 7, and the like is thermally diffused with heat conduction into the whole liquid cooling unit 9 by circulating the coolant with the liquid cooling pump 14.
摘要:
A diaphragm pump enabling an increase in pump efficiency by reducing the pressure loss of liquid and reduction in thickness. The flow passage in piezoelectric pump (1) includes a pressure chamber (50) formed into a flat shape in cross section and a suction side flow passage (70a) and discharge side flow passage (70b). The suction side flow passage (70a) and the discharge side flow passage (70b) are disposed at both ends of the pressure chamber (50) so that the axes thereof are aligned with each other. The check valves (20a, 20b) are respectively disposed on the suction side flow passage (70a) and the discharge side flow passage (70b), and are tilted relative to the flow direction of the liquid.
摘要:
A semiconductor package comprising an LSI chip, a chip bump, an interposer, and a BGA bump is mounted at a predetermined position of a printed wiring board having a core layer. A heat sink for dissipating heat generated from the LSI chip is installed within the core layer. Further, heat radiating vias for conveying heat generated from the LSI chip to the heat sink are provided within the printed wiring board so that the BGA bump in the LSI chip is thermally liked with the heat sink. The heat generated from the LSI chip is mainly dissipated through a route of chip bump→interposer→BGA bump→heat radiating via→heat sink. By virtue of the above construction, the semiconductor device packaging structure can reduce the packaging volume of the heat sink while providing satisfactory cooling capacity and, at the same time, can minimize the length of signal wiring between LSI chips.
摘要:
A semiconductor device includes two or more semiconductor modules which are stacked up into three-dimensional structure. Each semiconductor module includes a wiring board, one or more IC chips which are mounted on the wiring board, and one or more heat sinks which are attached to the IC chips via a thermal-conductive adhesive and are forcedly cooled by a coolant flowing through channels which are formed therein. The wiring board of each semiconductor module is provided with sockets having I/O pins and concavities. Electrical connection between adjacent semiconductor modules of the semiconductor device is established by inserting the I/O pins of the sockets of one semiconductor module into the concavities of the sockets of the other semiconductor module. The channels in the heat sink are implemented by a plurality of channel grooves which are generated between a plurality of fins which are formed in a cavity inside the heat sink at predetermined intervals. The coolant is supplied to the channel grooves from outside and the IC chips are forcedly cooled by the coolant. Therefore, enough cooling capacity is ensured by use of low-profile heat sinks, thereby both high processing speed (due to high packing density and short signal lines between IC chips) and sufficient cooling capacity are attained.
摘要:
The thermal resistance of an entire semiconductor package with a semiconductor chip and radiation fins is calculated based on thermal resistance of resin between the semiconductor chip and case, thermal resistance of the radiation fins, and thermal resistance of three heat radiation paths in the semiconductor package. One of said three heat radiation paths is passing through the bottom surface of the case. The other of said three radiation paths is passing through the leadframe. The other of three radiation paths is passing through sides of the case other than the leadframe.
摘要:
Behavior of a vapor bubble that emerges should be controlled to improve operational stability and reliability of a phase shift heat exchanger having a microchannel. The heat exchanger has a dual layer structure and includes a material that is elastically deformed according to pressure difference between the layers. The layers are connected, and at the connection interface a resistance unit that exerts a predetermined resistance against a coolant flowing from the coolant supplying layer toward the microchannel layer is provided, to maintain internal pressure of the coolant supplying layer higher than that of the microchannel, under a normal operation. Once a vapor bubble emerges, the relationship in strength of the internal pressure is turned over, and the elastic material is lifted so that the vapor bubble is dividedly distributed over a plurality of microchannels. Alternatively, the internal pressure of the coolant supplying layer may be maintained lower than that of the microchannel, so that once a vapor bubble emerges the vapor bubble is drawn to the lower pressure side.