JP2006215764A - Information processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the downsizing and safety of an information processing apparatus having a cooling mechanism using liquid. <P>SOLUTION: The information processing apparatus has a liquid cooling system in which a heat receiving jacket thermally connected to a heating element and a heat radiation part installed in a case bottom are connected to circulate coolant therebetween via a liquid drive device. The case bottom of the information processing apparatus is provided with a recess of a volume larger than the total quantity of coolant in the liquid cooling system, and the heat receiving jacket, a heat radiation plate and the liquid drive device are arranged inside the recess in the case bottom. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a liquid drive cooling structure for an information processing apparatus in which a wiring board having a heating element mounted in a case is accommodated.

  Among information processing apparatuses such as notebook personal computers, there is one that cools the heat generated by the heat generating part to the heat radiating part by cooling liquid by increasing the heat generation of the heat generating parts such as the CPU (for example, patents) Reference 1). More specifically, the heat receiving jacket attached to the heating element and the heat radiating plate installed on the case wall circulate between them through the liquid drive device, so that the heat generated by the heating element is used as the heat receiving jacket. The heat is transmitted by driving the liquid from the heat receiving jacket to the heat radiating plate by the liquid driving device, and is radiated to the outside air from the heat radiating plate provided on the back surface of the display unit.

JP 2002-182797 A

  Patent Document 1 discloses a liquid cooling technique in a notebook personal computer, but the structure in which a heat radiating plate is provided inside the apparatus is the same in a desktop PC or the like. There is a problem that the apparatus becomes large because it is arranged inside the apparatus.

  Some information processing apparatuses are provided with irregularities on the bottom surface of the case in order to improve the strength of the case. When the heat radiating plate is disposed on the bottom surface of the information processing device having the unevenness on the bottom surface of the case, both the size of the unevenness on the bottom surface of the case and the size of the heat radiating plate are required, and the information processing device becomes large.

  Further, in an information processing apparatus using a liquid drive device, there is a possibility that the coolant leaks from the heat receiving jacket, the liquid drive device, the heat radiating plate, and the connecting portion thereof. If a coolant tray is provided in a portion where the coolant may leak so as not to leak outside the processing apparatus, the size of the tray is required, and the information processing apparatus becomes large.

  An object of the present invention is to solve the above-described problems and to provide an information processing apparatus in which a heat radiating plate is arranged without increasing the size of the apparatus.

  In order to solve the above-mentioned problem, the heat receiving jacket thermally connected to the heat generating element of the present invention and the heat dissipating part installed on the bottom surface of the case are circulated between them through the liquid driving device. An information processing apparatus having a connected liquid cooling system has a recess having a volume larger than the total amount of cooling liquid in the liquid cooling system on the bottom surface of the case of the information processing apparatus, and the heat receiving jacket, the heat radiating plate, and the liquid drive The device was placed inside the recess on the bottom of the case.

  According to the present invention, since the heat radiating plate, the heat receiving jacket, and the liquid driving device are disposed inside the reinforcing recess on the bottom surface of the case of the information processing device, the size of the information processing device can be reduced.

  In addition, when the coolant leaks from the cooling system, the heat sink plate, the heat receiving jacket, and the liquid drive device are disposed in the recess on the bottom surface of the information processing device, so that the coolant accumulates in the recess on the bottom surface of the information processing device, Since the coolant does not leak into the current-carrying part of the information processing apparatus, there is no danger of short-circuiting, and there is no leakage outside the information processing apparatus.

  Embodiments of the present invention will be described below.

  An embodiment of the present invention is shown in FIG. FIG. 2 is a perspective view of the information processing apparatus of this embodiment. The information processing apparatus includes a video signal board 2, a main board 3, and a power supply board 4, and is housed in the case 1 together with video media drives such as a hard disk drive 5 and an optical disk drive 6, and a fan 7. One or a plurality of tuners 9 are mounted on the video signal board 2, receive the video signals, and the processed signals are recorded as video data on the video media drive by the CPU 8 mounted on the main board 3. The video data read from the video media drive is processed by the CPU 8 and output to the outside via the video signal board 2. In addition, video data may be directly input / output. As these video data are processed, the CPU 8 and other elements mounted on the boards 2, 3, 4 and the video media drives 5, 6 generate heat. These heat generations are cooled by the fan 7.

  A detailed structure for cooling is shown in FIG. 1, FIG. 3, FIG. 4 and FIG. FIG. 1 is a perspective view of the information processing apparatus, in which the main board 3, the hard disk drive 5, and the optical disk drive 6 are cut at the center of the CPU 8. FIG. 3 is a perspective view of the information processing apparatus, in which the video signal board 2, the main board 3, the power board 4, the hard disk drive 5, the optical disk drive 6, and the fan 7 are omitted, and FIG. 4 is a plan view thereof. is there.

  As shown in the enlarged view of FIG. 1, a hole is opened on the lower side of the CPU 8 of the main board 3, and a heat receiving jacket 10 is attached to the CPU 8 having a particularly large calorific value, and both are thermally connected. In addition, a heat radiating plate 12, a heat radiating plate 12, a pump 13, and a tank 14 are installed in a recess 15 provided on the bottom surface of the case 1. The volume of the recess 15 is larger than the total amount of the cooling liquid in the cooling system disposed inside the recess 15 on the bottom surface of the case 1, and no hole is provided inside the recess 15. The concave portion 15 has a shape necessary for improving the strength of the case 1. In order to improve the strength of the case 1 without the concave portion 15, a reinforcing part is added or the material of the case 1 is strong. It is necessary to adopt.

  FIG. 5 shows a case where the cooling system is disposed inside the recess 15 and a case where the cooling system is not disposed. When the cooling system is not arranged inside the recess 15, the height of the recess 15 and the height dimension of the cooling system are in series, so the size of the case increases, but the cooling system is arranged inside the recess 15. In this case, since the height of the recess 15 and the height of the cooling system are parallel, the size of the case can be reduced.

  The heat receiving jacket 10 is formed with a flow path for the liquid to circulate, and constitutes a liquid circulation flow path through the pump 13 and the tank 14 together with the heat radiating pipe 11. The heat receiving jacket 10 is formed, for example, by forming a flow path in a metal block such as aluminum and sealing the pipe or a pipe on a plate. Water or refrigerant liquid such as antifreeze liquid is sealed in the circulation flow path, and the liquid circulates in the order of the tank 14, the heat receiving jacket 10, and the heat radiating pipe 11 by the pump 13.

  In addition, a flexible tube etc. may be used for connection piping of each member in consideration of assembling property. Further, the capacity of the tank is determined in consideration of the evaporation of the liquid from the circulation channel system. The heat generated by the CPU 8 is transmitted to the heat receiving jacket 10, transported to the heat radiating pipe 11 by the circulation of the liquid, and radiated from the heat radiating plate 12. At this time, the heat radiated from the heat radiating plate 12 is radiated by the natural heat radiated to the outside air via the bottom wall of the case 1 and the air flowing through the gap formed between the main board 3.

  There may be holes for various purposes on the bottom of the case. Also in this embodiment, a hole is formed in the bottom surface of the case 1 as shown in FIG. Usually, the case is often made of sheet metal, and in this embodiment, in order to provide a tall protrusion without adding parts to the sheet metal, a U-shaped hole is made in the sheet metal and the inside is bent. Yes. The function of the protrusion is to prevent a load from being applied downward when the connector on the board is fitted and the board is bent and damaged, and the upper surface of the protrusion is brought into contact with the bottom surface of the board. When the coolant leaks from the heat receiving jacket 10, the heat radiating pipe 11, the pump 13, the tank 14, and the connecting portion thereof, the liquid may leak from the hole on the bottom surface of the case to the outside of the information processing apparatus. In the example, since the liquid can be stored in the recess 15, the liquid does not leak outside the information processing apparatus.

  Further, since the heat receiving jacket 10, the heat radiating pipe 11, the pump 13, the tank 14, and the connecting portion thereof are arranged on the bottom surface of the information processing apparatus, even when the liquid leaks, the liquid does not contact the current-carrying portion. Damage to energized parts due to short circuit can be prevented.

It is the perspective view which cut | disconnected the main board | substrate etc. of this invention. It is a perspective view of the present invention. It is a perspective view of a case of the present invention and a cooling system using a liquid. It is a top view of the case of the present invention and a cooling system using a liquid. It is sectional drawing of this invention.

Explanation of symbols

1 ... case, 2 ... video signal board, 3 ... main board, 4 ... power supply board,
5 ... Hard disk drive, 6 ... Optical disk drive, 7 ... Fan, 8 ... CPU,
9 ... tuner, 10 ... heat receiving jacket, 11 ... heat radiating pipe, 12 ... heat radiating plate,
13 ... Pump, 14 ... Tank, 15 ... Recess

Claims (1)

An information processing apparatus having a liquid cooling system in which a heat receiving jacket thermally connected to a heat generating element and a heat radiating portion installed on the bottom surface of the case are connected via a liquid driving device so that a coolant circulates between them. In
A recess having a volume larger than the total amount of cooling liquid in the liquid cooling system is provided on the bottom surface of the information processing apparatus, and the heat receiving jacket, the heat radiating plate, and the liquid driving device are disposed inside the recess on the bottom surface of the case. An information processing apparatus characterized by the above.

Images