KR20120053285A - Heat radiation effect improved water-cooled radiation pin - Google Patents

Abstract

PURPOSE: A cooling pin of a water-cooling type having improved thermal performance is provided to form pressure difference to the flow of a refrigerant by installing an orifice in a circulation flow path. CONSTITUTION: Circulation flow paths(11,21) are formed to circulate a refrigerant on both sides which a front body(10) and a back body(20) face. The circulation flow path has a large cross section in an evaporation section. The circulation flow path has a narrow cross section in a condensation section of the refrigerant. The front body and back body are formed by press processing. A cooling fin is formed on the circulation flow path of the front body and the back body. Slot plates(12,22) are formed on the front body and the back body. The circulation flow path includes an orifice formed in the condensation section.

Description

HEAT RADIATION EFFECT IMPROVED WATER-COOLED RADIATION PIN}

The present invention relates to a water-cooled cooling fin with improved heat dissipation effect, and more particularly, to form a wide cross section of an evaporation section in which a refrigerant evaporates in a circulation passage through which a refrigerant is circulated, and to narrow a cross-sectional shape of a condensation section in which a refrigerant is condensed. The present invention relates to a water-cooled cooling fin that can generate a pressure difference between refrigerants while passing through a circulation passage, thereby increasing heat transfer speeds and improving heat dissipation effects.

In general, electronic components, such as a CPU, which are frequently used in a computer or at home, are provided with a heat conduction panel (heat sink) to exhaust heat generated by a computing process to the outside of the device. In particular, the heat conduction panel is used a lot of cooling fins to increase the heat dissipation effect by forming the heat dissipation area as wide as possible.

Initially, the cooling fins were manufactured and used integrally with the heat conduction panel to increase the heat dissipation effect. However, in recent years, the cooling fins are often used to circulate a refrigerant such as water or alcohol to further increase the heat dissipation and cooling effect.

Such a water-cooled cooling fin is disclosed in the water-cooled heat sink of Patent Document 1 described below. The water-cooled cooling fins configured in the conventional water-cooled heat sink form a circulation passage so that the refrigerant can circulate therein, and the refrigerant is circulated therein.

Existing cooling fins are hollow inside the cooling fins and are filled with refrigerant, so that heat dissipation efficiency is improved by heat exchange due to a change in state of the refrigerant, but the following problems occur.

1) Since the cross-sectional area of the circulation channel is constant, there is a limit in improving the heat exchange rate with the refrigerant due to the constant flow of the refrigerant in the circulation path during evaporation and condensation of the refrigerant. Due to the limitation of the heat exchange rate, the heat dissipation efficiency was reduced by that much.

2) Since the internal pressure is not generated in the circulation passage, there is a limit in the heat exchange between the refrigerant and the outside air, which causes a problem of low heat exchange efficiency.

3) Since the refrigerant condensed in the condensation section naturally falls, the residence time of the refrigerant is short, resulting in a hollow state.

Korean Patent Publication No. 10-2007-0021769

The present invention has been devised in view of this point, and in forming the circulation passage, the diameter is gradually narrowed from the evaporation section of the refrigerant to the condensation section, thereby increasing the heat transfer rate due to the pressure difference between the evaporation section and the condensation section. It is an object of the present invention to provide a water-cooled cooling fin to improve the effect.

In particular, the present invention is to produce a symmetrical form by pressing the body constituting the cooling fins and then to be used in combination by a method such as fusion, and to easily control the diameter in the evaporation section and condensation section. Accordingly, another object of the present invention is to provide a water-cooled cooling fin having an improved heat dissipation effect, which enables to easily produce a large amount of cooling fins suitable for the type of refrigerant.

In addition, the present invention by configuring two circulation paths in one cooling fin, it is possible to fold the cooling fins facing each other or to fold vertically can be used in a variety of ways depending on the type of heat radiation member or installation location. Another object is to provide a water-cooled cooling fin with improved heat dissipation.

Water-cooled cooling fins with improved heat dissipation effect according to the present invention for achieving this object, in the water-cooled cooling fins mounted on the heat conduction panel for releasing heat generated from the electronic components, the refrigerant is circulated on both sides facing each other Circulation flow path is formed so that the front body and the rear body are fused and fixed to each other, and the circulation flow path has a wide cross-sectional area of evaporation section where the refrigerant evaporates, and a cross-sectional area of the response section where the refrigerant condenses is narrower than the evaporation section. It features.

In particular, the front body and the rear body is characterized in that formed by press working. And, the front body and the rear body is characterized in that the heat sink is further formed inside the space formed by the circulation passage. In addition, the front body and the rear body is characterized in that the slot plate is further formed to be removable to the heat conduction panel.

In addition, the front body and the rear body is characterized in that a pair of circulation passages are formed, respectively. The circulation passage at this time is characterized in that the orifice is further formed in the response section.

According to the water-cooled cooling fin improved heat radiation effect of the present invention has the following effects.

1) Due to the wide cross-sectional area of the evaporation section where the refrigerant expands and the narrow cross-sectional area of the condensation section where the refrigerant contracts, pressure differences are generated according to the change of area. Due to such a pressure difference, it is possible to improve the heat transfer rate of the refrigerant and consequently to increase the heat dissipation effect.

2) Since the orifice is provided in the circulation passage, the pressure difference with respect to the flow of the refrigerant can be made larger, so that the heat dissipation effect can be further increased.

3) Cooling fin can be manufactured by changing evaporation section and condensation section diameter to form evaporation temperature of refrigerant as desired. Therefore, mass production is possible according to the desired refrigerant and its evaporation temperature. In particular, since the cooling fins are manufactured by press working, it is more advantageous in mass production with cost reduction effect.

4) By forming two circulating flow paths in succession, these circulating flow paths can be folded to face each other or folded vertically so that they can be used in various ways regardless of the shape or shape of the heat sink.

1 is an exploded perspective view showing a separated state to explain the configuration of a water-cooled cooling fin according to a first embodiment of the present invention.
Figure 2 is a plan view showing a combined state of the water-cooled cooling fins according to the first embodiment of the present invention.
Figure 3 is a perspective view for showing a state of use of the water-cooled cooling fins according to the first embodiment of the present invention.
4 is a plan view schematically illustrating the configuration of a water-cooled cooling fin according to a second embodiment of the present invention.
5 is a perspective view schematically showing the configuration of a water-cooled cooling fin according to a third embodiment of the present invention.
6 is a perspective view schematically showing the configuration of a water-cooled cooling fin according to a fourth embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

( First embodiment )

1 is an exploded perspective view showing a separated state to explain the configuration of a water-cooled cooling fin according to the first embodiment of the present invention, Figure 2 is a combined state of the water-cooled cooling fin according to the first embodiment of the present invention It is a top view showing. 3 is a perspective view showing a state of use of the water-cooled cooling fin according to the first embodiment of the present invention. Here, the arrows indicated by solid lines indicate the flow of the refrigerant in the evaporation section, and the arrows indicated by hidden lines indicate the condensation section. Shows the flow of the refrigerant, respectively. 3, reference numeral "R" denotes a thermal conductive panel, and "S" denotes a slot formed in the thermal conductive panel, respectively.

The water-cooled cooling fin 100a according to the first embodiment of the present invention includes a front body 10 and a rear body 20 in which circulation passages 11 and 21 are formed to circulate refrigerant on both sides facing each other. It is composed. In particular, the circulation passages 11 and 21 form a wide cross-sectional area of the diameter of the evaporation section A in which the refrigerant turns to steam by heat exchange, and a narrow cross-sectional area of the diameter of the condensation section B where the refrigerant is condensed. To generate a pressure difference between the evaporation section (A) and the condensation section (B) is to improve the heat exchange efficiency. Here, the evaporation section (A) and the condensation section (B) is partitioned by a center line drawn in diagonal lines as shown in FIG.

Hereinafter, these components will be described in more detail.

The front body 10 and the rear body 20 are integrally manufactured by a method such as fusion fusion and the like to form the circulation flow paths 11 and 21 through press working so as to facilitate manufacturing and mass production.

These front body 10 and the rear body 20 is formed with circulation passages (11, 21) on the surface facing each other. The circulation passages 11 and 21 are formed in a closed curve so that the refrigerant supplied to the water-cooled cooling fins 100a of the present invention can undergo heat exchange through phase change. Unlike the conventional water-cooled cooling fins, the closed curve minimizes the resistance to the flow of the refrigerant by forming a round at the corner portion.

In addition, the circulation passages 11 and 21 are further provided with inlets 11a and 21a and outlets 11b and 21b to receive the refrigerant from the outside and discharge them back to the outside.

In particular, the circulation passages 11 and 21 produce different phase cross-sectional areas of the evaporation section A and the condensation section B, which exist when the refrigerant is in phase change, that is, when the refrigerant is vapor and in the liquid state. That is, the diameter of the evaporation section (A) where the refrigerant evaporates by heat exchange due to direct contact with the heat conduction panel forms a large cross-sectional area, and conversely, the diameter of the condensation section (B) where heat exchange with the outside is smaller than the evaporation section (A). To form.

This causes a pressure difference between the evaporation section (A) and the condensation section (B) due to the size change of the cross-sectional area, the heat transfer speed is increased by that pressure difference. This heat transfer rate is to improve the heat dissipation effect.

Finally, slot plates 12 and 22 are further formed on the front body 10 and the rear body 20 to be fitted to the heat conduction panel at the bottom. In general, a plurality of slots S are formed side by side in the thermal conductive panel R, and water-cooled cooling fins 100a are inserted into the slots S, respectively. Thus, the slot plates 12 and 22 are manufactured in a form corresponding to the slot S so that the water-cooled cooling fins 100a can be easily inserted. Of course, the bottom of the water-cooled cooling fin (100a) can be inserted into the slot (S) without making a separate.

In the water-cooled cooling fin 100a according to the first embodiment of the present invention, the refrigerant supplied through the inlets 11a and 21a exchanges heat with the heat conduction panel, causing a phase change. At this time, the refrigerant phase-changed by the steam is transferred from the evaporation section (A) having a wide diameter to the condensation section (B) having a narrow diameter, thereby generating a pressure difference due to the cross-sectional difference. In addition, such a pressure difference increases the heat transfer rate between the refrigerant and the outside air, thereby increasing the heat radiation effect.

( Second embodiment )

4 is a plan view schematically illustrating the configuration of a water-cooled cooling fin according to a second embodiment of the present invention. Here, about the same structure as the structure of 1st Embodiment, the same code | symbol is used as it is and detailed description is abbreviate | omitted.

The water-cooled cooling fin 100b according to the second embodiment of the present invention is formed by further configuring the orifice 13 on the circulation passages 11 and 21 of the first embodiment.

At this time, the orifice 13 is preferably formed in the condensation section (B) so that the refrigerant to be condensed does not fall naturally. In particular, the orifice 13 is formed on the outlet side of the condensation section (B), thereby preventing the refrigerant from escaping rapidly from the condensation section (B) and the blowing speed so that the phase change to the gas phase can be easily made It is desirable to be able to raise.

On the other hand, since the conventional cooling fin applies a natural dropping method, there is a problem that the performance is greatly reduced when the angle is changed, that is, the installation direction, but the present invention can adjust the refrigerant circulation amount according to the position change of the orifice (13) It has the advantage of smooth use at various angles.

( Third Embodiment )

5 is a perspective view schematically illustrating the configuration of a water-cooled cooling fin according to a third embodiment of the present invention. Here, about the same structure as the structure of 1st Embodiment, the same code | symbol is used as it is and detailed description is abbreviate | omitted.

The water-cooled cooling fin 100c according to the third embodiment of the present invention further includes a heat sink P on the front body 10 and the rear body 20 to further increase the heat radiation efficiency. The heat sink P at this time is formed in the space portion formed by the circulation passages 11 and 21.

That is, in processing the front body 10 and the rear body 20 through a press process, the front body 10 and the rear body 20 are centered like the closed curve of the circulation passages 11 and 21. It is punched out to blank the parts together.

However, the water-cooled cooling fin 100c according to the third embodiment of the present invention maintains the inside of the closed curve formed by the circulation passages 11 and 21 without blanking, and uses it for the same purpose as the heat sink P. Done. Further, it is more preferable that the heat dissipation plate P further forms heat dissipation holes so that the outside air passes through the heat dissipation holes to further increase the heat exchange efficiency.

Thus, the water-cooled cooling fins 100c according to the third embodiment of the present invention can further improve the heat dissipation effect because the heat dissipation area becomes wider.

( Fourth embodiment )

6 is a perspective view schematically showing the configuration of a water-cooled cooling fin according to a fourth embodiment of the present invention. Here, about the same structure as the structure of 3rd embodiment, the same code | symbol is used as it is and detailed description is abbreviate | omitted.

The water-cooled cooling fin 100d according to the fourth embodiment of the present invention forms a pair of circulation passages 11 ', 11 ", 21', 21" on the front body 10 and the rear body 20, respectively. Configure.

Accordingly, the water-cooled cooling fins 100d according to the fourth embodiment of the present invention may be folded and used based on the circulation passages 11 ', 11 ", 21', and 21". In other words, the pair of circulation passages 11 ', 11 ", 21', 21" may be folded to face each other, or they may be folded vertically.

Therefore, the water-cooled cooling fin 100d according to the fourth embodiment of the present invention may be modified in various forms according to the shape of the thermal conductive panel R or the mounting position thereof.

Here, each of the above-described embodiments is illustrative, and it is also possible to configure the new embodiment by applying each of these embodiments to other embodiments.

As described above, the present invention is fusion-bonded to the body of the glass processing to form a larger diameter cross-sectional area of the evaporation section than the diameter of the condensation section, thereby generating a pressure difference between the evaporation section and condensation section, thereby increasing the heat transfer rate. Increase the heat dissipation effect.

10: front body 11, 21: circulation flow path
11a, 21a: inlet 11b, 21b: outlet
13: orifice 20: rear body

Claims (6)

In the water-cooled cooling fins mounted on the heat conduction panel for dissipating heat generated from the electronic components,
On both sides facing each other, the circulation passages 11 and 21 are formed to circulate the refrigerant so that the front body 10 and the rear body 20 are fused and fixed to each other.
The circulation passages 11 and 21 have a wide cross-sectional area of the evaporation section A in which the refrigerant is evaporated, and a cross section of the response section B in which the refrigerant is condensed is narrower than the evaporation section. Water-cooled cooling fins.
The method of claim 1,
The front body 10 and the rear body 20 is water-cooled cooling fins improved heat radiation effect, characterized in that formed by pressing.
The method according to claim 1 or 2,
The water-cooled cooling fins, the heat dissipation effect is improved, characterized in that the front body 10 and the rear body 20 is further formed with a heat sink (P) in the space formed by the circulation passages (11, 21). The method of claim 3, wherein
The front body (10) and the rear body (20) is a water-cooled cooling fins improved heat dissipation effect, characterized in that the slot plate (12, 22) is further formed to be removable to the heat conduction panel.
The method of claim 4, wherein
The front body 10 and the rear body 20 has a pair of circulation flow paths (11 ', 11 ", 21', 21") of the water-cooled cooling fins, characterized in that the heat radiation effect is improved.
The method of claim 3, wherein
The circulation passages (11, 21) is a water-cooled cooling fins improved heat dissipation effect, characterized in that the orifice (13) in the response section (B).

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