JP2005005361A - Heat sink - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat sink in which a liquid path is provided by meandering the path in a zigzag state in an inexpensive constitution that can prevent the fall of heat conduction efficiency. <P>SOLUTION: In this heat sink, turn blocks 3a and 3b are respectively attached to both ends of a plate-shaped main-body block 1 having a plurality of through holes 2 between its facing ends, and communicating means which communicate the through holes 2 with each other are provided between the end of the main-body block 1 and the turn blocks 3a and 3b. In addition, a liquid introducing port 5 and a liquid discharging port 6 are provided in the turn block 3b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a heat sink having a liquid cooling structure that absorbs and dissipates heat of a Peltier element of a panel cooler that cools the inside of panels such as a distribution board, a distribution board, and a communication board.
[0002]
[Prior art]
A heat sink with a liquid cooling structure is provided with meandering liquid paths meanderingly in order to increase heat absorption and heat dissipation efficiency. However, since such a liquid path has a curved portion, as shown in FIG. A groove 102 having a U-shaped cross section is cut on the surface side of the heat sink body 101 made of an alloy or an aluminum alloy, and the upper opening of the groove 102 is blocked by a panel 103 which is made of the same material as that of the heat sink body 101, and the liquid path 104 was formed. (For example, Patent Document 1)
[0003]
Japanese Patent Laid-Open No. 2001-313357 (FIGS. 5 and 7)
[0004]
[Problems to be solved by the invention]
However, in order to close the upper opening of the groove 102 with the panel 103, the panel 103 is brazed to the heat sink main body 101. However, the panel 103 and the heat sink main body 101 cannot be integrated completely, and the heat conduction is not achieved. It was the cause that ability declined. Further, the groove 102 is cut on the surface of the heat sink main body 101 and closed by the panel 103, and manufacturing by brazing is very laborious and costly.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a heat sink is formed by attaching a turn block to both ends of a plate-like main body block provided with a plurality of through holes extending between opposing end portions, The invention according to claim 1, characterized in that a communication means for communicating the plurality of through holes with the block is provided and a liquid inlet and a liquid outlet are provided in the turn block. In the invention according to claim 2, the communication means is a communication recess provided in the turn block. In the invention according to claim 1, the communication means is provided in the end face of the main body block. The invention according to claim 3 is further provided, and in these inventions, the main body block and the turn block are attached with bolts.
[0006]
In the heat sink of the present invention, the plurality of through holes provided between the opposing end portions of the plate-like main body block are communicated by the communicating means provided between the turn blocks attached to both end portions of the main body block. Since the liquid path meandering in a distorted manner is formed, the liquid introduced from the liquid inlet is circulated, and the heat sink is radiated or absorbed by this liquid and discharged from the liquid outlet.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described with reference to the drawings.
First, the first embodiment shown in FIGS. 1 to 5 will be described. Reference numeral 1 denotes a plate-like main body block made of copper, a copper alloy, or an aluminum alloy. The main body block 1 is provided with a plurality of through-holes 2 between the opposing end portions, that is, four. Reference numerals 3a and 3b denote turn blocks attached to both ends of the main body block 1. Communication means for communicating the plurality of through holes 2 (2a, 2b, 2c, 2d) is provided between the turn blocks 3a, 3b and the main body block 1.
[0008]
In this embodiment, the communication means is composed of a communication recess 4 provided in the turn blocks 3a and 3b, and one turn block 3a has two through holes from the outside of the four through holes 2. 2 a and 2 b are paired, and two through holes 2 c and 2 d are paired to communicate one end of each through hole with two communicating recesses 4 a, and the other turn block 3 b has four through holes 2. The two through-holes 2b and 2c are provided as a pair, and one communication recess 4b is provided for communicating the other ends of the through-holes. The other turn block 3b is provided with a liquid inlet 5 and a liquid outlet 6 communicating with the other ends of the outer through holes 2a, 2d.
[0009]
Further, the means for attaching both turn blocks 3a, 3b to the main body block 1 is formed with a female screw portion 7 at the end of the main body block 1, and a bolt with a bolt head fitting step portion 8a formed on the turn blocks 3a, 3b. In order to screw with the bolt 9 from the insertion hole 8, a packing material is interposed between the main body blocks 1 of the turn blocks 3a and 3b. Also, a large number of bolt insertion holes 10 are provided across the front and back surfaces of the main body block 1, and a plurality of heat sinks are stacked for heat absorption and heat dissipation as shown in FIG. As a convenience in case.
[0010]
In this configuration, the through-hole 2 provided between the opposing end portions of the main body block 1 is connected to the turn blocks 3a and 3b attached to both end portions of the main body block 1. That is, the end of the through hole 2 that is communicated by the coupling recesses 4a and 4b and does not face the coupling recesses 4a and 4b communicates with the liquid inlet 5 and the liquid outlet 6 formed in the turn block 3b. Since a liquid path meandering in a twisted manner is formed, the liquid introduced from the liquid inlet 5 is circulated, and the heat from the main body block 1 is cooled or heated by the heat conduction or heat radiation of the Peltier element. It receives heat and is sent from the liquid discharge port 6 to a cooling radiator or a radiator for heat dissipation.
[0011]
The feature of the present invention is that the above-described plate-like main body block 1 having a plurality of through-holes 2 extending between opposing ends is formed, and the main body block is formed in a meandering manner. 1 is provided with connecting means for attaching the plurality of through holes 2 between the end portions of the main body block 1 and the turn blocks 3a, 3b. By providing the through-hole 2 in the plate-like main body block 1 in this way, the heat conduction efficiency is not lowered as if a liquid path was formed by combining different parts as in the prior art.
[0012]
The manufacturing method for providing the plurality of through holes 2 in the main body block 1 may be formed as an extruded material, or can be easily performed by drilling a hole in the block. Since the connecting recesses 4a and 4b provided in the turn blocks 3a and 3b can be easily manufactured by cutting, and the turn blocks 3a and 3b can be easily attached to the main body block 1 by bolts. It can be manufactured at low cost.
[0013]
Next, a second embodiment shown in FIGS. 6 to 8 will be described. This embodiment is different from the first embodiment in the communication means provided between the turn blocks 3a, 3b and the main body block 1, and will be described with reference thereto. That is, in this embodiment, the communication means is composed of a communication recess 11 provided on the end surface of the main body block 1, and one end surface 1 a of the main body block 1 has two through-holes 2 from the outside. Two through-holes 2a and 2b, two through-holes 2c and 2d as a pair, two communication recesses 11a for communicating one end of the through-holes, and four through-holes on the other end surface 1b The two through holes 2b and 2c on the side of 2 are paired, and one communication recess 11b is provided for communicating the other ends of the through holes.
[0014]
Then, it is assumed that the opening surfaces of these communication recesses 11a and 11b are closed by turn blocks 3a and 3b attached to both ends of the main body block 1 so that all the through holes 2 communicate with each other. A liquid inlet 5 and a liquid outlet 6 communicating with the other end are provided.
[0015]
Next, the third embodiment shown in FIG. 9 will be described. This embodiment is different from the first embodiment in the communication means provided between the turn blocks 3a, 3b and the main body block 1, and will be described with reference thereto. That is, in this embodiment, the communication means is formed by forming the communication recess 11 provided on the end face of the main body block 1 and the communication recess 4 provided in the turn blocks 3a and 3b in a shallow groove shape so as to communicate with both the communication recesses 11. It is assumed that the common recess 4 is matched and communicated.
[0016]
In addition, since the said embodiment makes the through-hole 2 the even number of four, the liquid inlet 5 and the liquid outlet 6 are formed in the other turn block 3b which is the same edge part side. In the case of an odd number such as a book, it goes without saying that the liquid inlet 5 and the liquid outlet 6 are formed differently on one turn block 3a and the other turn block 3b which are different ends.
[0017]
As the communication means, in addition to the illustrated embodiment, one end surface side of the main body block 1 is constituted by a communication recess 4 provided in the turn block 3 similar to the first embodiment, and the other end surface side is formed. The communication recesses 11 provided on the end face of the main body block 1 similar to those of the second embodiment, or the communication recesses 4 provided on the turn block 3 and the end faces of the main body block 1 are provided on the same end face side. A combination with the recess 11 may be used.
[0018]
【The invention's effect】
As described above, the heat sink according to the present invention has a turn block attached to both ends of a plate-like main body block provided with a plurality of through-holes extending between opposing end portions, and the end of the main body block. Since the communication means for communicating the plurality of through holes with the turn block is provided, it is easy to form a meandering liquid path, and the heat conduction efficiency is reduced. Does not occur.
Therefore, the present invention eliminates the problems of the conventional heat sink and is a significant benefit for the industry.
[Brief description of the drawings]
FIGS. 1A and 1B are views showing a first embodiment, in which FIG. 1A is a plan view and FIG. 1B is a side view.
FIG. 2 is an exploded perspective view showing the first embodiment.
FIG. 3 is an exploded view of the first embodiment, where (A) is a plan view and (B) is a side view.
FIG. 4 is a perspective view showing the first embodiment.
FIG. 5 is a perspective view showing a state in which heat sinks are stacked and used.
6A and 6B are diagrams showing a second embodiment, in which FIG. 6A is a plan view and FIG. 6B is a side view.
FIG. 7 is an exploded perspective view of a second embodiment.
FIG. 8 is an exploded view of the second embodiment, where (A) is a plan view and (B) is a side view.
FIG. 9 is a plan view showing a third embodiment.
FIG. 10 is a partially cutaway plan view showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body block 2 Through-hole 3a Turn block 3b Turn block 4 Connection recessed part 5 Liquid introduction port 6 Liquid discharge port 11 Connection recessed part

Claims (4)

A turn block is attached to both ends of a plate-like main body block provided with a plurality of through holes between opposing end portions, and the plurality of through holes are communicated between the end of the main body block and the turn block. A heat sink comprising a communication means and a liquid inlet and a liquid outlet in the turn block. The heat sink according to claim 1, wherein the communication means is a communication recess provided in the turn block. The heat sink according to claim 1, wherein the communication means is a communication recess provided on an end face of the main body block. The heat sink according to claim 1, wherein the main body block and the turn block are attached with bolts.

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