TWI747037B - Improved structure of liquid-cooling heat dissipation head - Google Patents

Abstract

An improved structure of liquid-cooling heat dissipation head includes a base plate, a cover body. A heat exchanging surface forming on one side of the base plate and disposed on a plurality of heat dissipating fins. The heat dissipating fin recessing a first recess and a second recess. The cover body having a first side and a second side. The first side correspondingly the heat exchanging surface to define a heat exchange chamber for a cooling liquid to flow. A first protrusion and a second protrusion are respectively protruded from the first and the second recesses correspondingly the first side. The first and second protrusions are in combination with the first and second recesses, and the first and second protrusions defining a guiding passageway. A water inlet and a water outlet being respectively disposed on the cover body. The water inlet communicating with the guiding passageway. The water outlet communicating with the heat exchange chamber. Accordingly, the heat exchange efficiency can be greatly improved.

Description

Improved structure of liquid-cooled radiating head

This creation is about an improved structure of a liquid-cooled radiator, especially an improved structure of a liquid-cooled radiator that can greatly increase the heat exchange efficiency.

With the advancement of semiconductor processing technology, the computing speed of semiconductor wafers has also doubled compared to the past, but the increase in computing efficiency has also been accompanied by the generation of doubled heat energy. For the heat generated by semiconductor wafers today, the traditional air forced cooling mechanism is no longer sufficient. Therefore, liquid cooling mechanisms such as water cooling systems are bound to be the driving force in the future.

A water-cooled head is a component used in a water-cooling system to contact a heat source (such as a semiconductor chip). Its general working method is to exchange heat with the heat source by heat conduction to remove the heat generated during the work of the heat source, and then by The cooling liquid (for example, water) flows into the water block and exchanges heat with the heat dissipation fins or the heat dissipation column or the heat dissipation part of the water block by heat convection to transfer the heat energy to the cooling liquid, and takes away the water cooling as the cooling liquid flows out head. Therefore, the flow channel design in the water-cooled head is closely related to its thermal convection performance. Generally, a plurality of heat dissipation columns or fins are arranged in the water-cooled head to form a flow channel for the cooling liquid to flow through the heat dissipation column or heat dissipation fin or heat dissipation part. Heat exchange, because the traditional water block system directly makes the cooling liquid flow from an inlet to the flow channel of the radiating fins, because the cooling liquid flows inside the water block, there is no similar restriction or restriction structure to guide The direction of the water flow, as a result, will cause the cooling liquid to flow in a non-directional turbulent flow, only at the cooling liquid inlet and the heat dissipation pillars or heat dissipation fins or heat dissipation parts near the inlet In addition to a small amount of complete heat exchange, the heat exchange rate is poor or even no heat exchange rate for the heat dissipation pillars or heat dissipation fins located in the middle or far away from the entrance, resulting in the traditional water block heat exchange efficiency not being obvious.

Therefore, in order to effectively solve the above-mentioned problems, the main purpose of this creation is to provide an improved structure of a liquid-cooled heat sink that can greatly increase the heat exchange efficiency.

The secondary purpose of this creation is to provide an improved structure for a liquid-cooled radiating head that can make the flow of the cooling liquid smoother.

In order to achieve the above objective, the present invention provides an improved structure of a liquid-cooled heat sink, which includes a substrate and a cover. One side of the substrate forms a heat exchange surface, and a plurality of heat dissipation fins are arranged on the heat exchange surface. The heat dissipation fins are recessed with a first groove and a second groove, and a flow path is formed between the two adjacent heat dissipation fins. The cover has a first side and a second side. The first side corresponds to the heat exchange surface of the substrate to cover and jointly define a heat exchange chamber for a cooling liquid to flow, and the first side corresponds to the first and second grooves respectively to protrude a first convex Part and a second convex part, the first and second convex parts jointly define a guide channel, a water inlet and a water outlet are separately provided on the cover, the water inlet communicates with the guide channel, and the water outlet Connect the heat exchange chamber.

Through the design of this structure, the first and second grooves of the substrate and the first and second protrusions formed on the first side of the cover body are embedded and assembled with each other, so that the cooling liquid is When the water inlet flows into the cover body, it passes through the guide channel formed by the first and second protrusions on the cover body. In this way, the cooling liquid can flow from the center of the heat dissipation fins to the The function of the discharge on both sides can greatly improve the heat exchange efficiency between the cooling liquid and the radiating fins.

2: Improved structure of liquid cooling head

20: substrate

201: Heat conduction surface

202: Heat Exchange Surface

203: cooling fins

2031: first notch

2032: second notch

204: The first groove

205: second groove

206: Runner

21: Lid

211: first side

2110: contact surface

2111: first convex part

2112: second convex

2113: Guidance Road

2114: Heat Exchange Chamber

2115: gear

212: second side

22: water inlet

23: water outlet

3: Cooling liquid

Figure 1 is a three-dimensional exploded view of the first embodiment of the improved structure of the creative liquid-cooled heat sink; Figure 2 is a three-dimensional assembly view of the first embodiment of the improved structure of the creative liquid-cooled heat sink; third The figure is a top view of the first embodiment of the improved structure of the creative liquid-cooled heat sink; Fig. 4 is a partial perspective sectional view of the first embodiment of the improved structure of the creative liquid-cooled heat sink; Fig. 5 is a perspective exploded view of the second embodiment of the improved structure of the creative liquid-cooled heat sink.

The above-mentioned purpose of this creation and its structural and functional characteristics will be described based on the preferred embodiments of the accompanying drawings.

Please refer to Figures 1 and 2, which are the three-dimensional exploded view and three-dimensional assembly view of the first embodiment of the creative liquid-cooled radiator head improved structure. As shown in the figure, a liquid-cooled radiator head improved structure 2 includes A substrate 20 and a cover 21. The substrate 20 has a heat conduction surface 201 and a heat exchange surface 202. The heat conduction surface 201 is in contact with a heat source (not shown). The heat exchange surface 202 is provided with A plurality of heat dissipation fins 203 arranged at intervals. The heat dissipation fins 203 have a fixed end connected to the heat exchange surface 202 and a free end away from the fixed end. A fin height is defined between the free end and the fixed end, A first notch 2031 and a second notch 2032 are defined on each heat dissipation fin 203, and the first notches 2031 on each heat dissipation fin 203 are arranged at corresponding intervals to form a first groove 204. A groove 204 is recessed from the free end of the heat dissipation fins 203 to the fixed end to a depth and the depth is smaller than the height of the fin, and the second notches 2032 on each heat dissipation fin 203 are arranged at corresponding intervals A second groove 205 is formed. The second groove 205 is recessed from the free end of the heat dissipation fins 203 to the fixed end with a depth and the depth is less than the height of the fin. In addition, two adjacent heat dissipation A flow channel 206 is formed between the fins 203; a water inlet 22 and a water outlet 23 are separately provided on the aforementioned cover body 21, and the cover body 21 has a first side 211 and a second side on both sides respectively 212. The first side 211 further forms a contact surface 2110. The first side 211 of the cover body 21 covers the heat exchange surface 202 of the substrate 20 so that the contact surface 2110 is correspondingly attached to the heat dissipation fin On the free end of the sheet 203, the first side 211 of the cover 21 and the heat exchange surface 202 jointly define a heat exchange chamber 2114 for a cooling liquid 3 to flow (please also (Refer to Figure 4), the heat exchange chamber 2114 communicates with the flow channel 206 of the aforementioned heat dissipation fin 203 and the water outlet 23, and the first side 211 corresponds to the aforementioned first and second grooves 204, 205 A first convex portion 2111 and a second convex portion 2112 are respectively protruded. The first and second convex portions 2111 and 2112 jointly define a guide channel 2113, and the guide channel 2113 communicates with the water inlet 22, Wherein, the first and second protrusions 2111, 2112 are used to restrict each flow of the cooling liquid 3 that can only pass through the guide channel 2113 and flow between the heat dissipation fins 203 when the cooling liquid 3 flows in from the water inlet 22 In the channel 206, the cooling liquid 3 has a smooth flow direction; wherein, the first and second protrusions 2111, 2112 on the cover 21 and the cover 21 are integrally formed, and in this embodiment, The first and second protrusions 2111, 2112 are formed on the cover body 21 in a continuous manner, but not limited to them. The first and second protrusions 2111, 2112 can also be formed as discontinuous shapes. The aspect (not shown in the figure), of course, the heat dissipation efficiency achieved by the first and second protrusions 2111, 2112 in a continuous state is better than that of the first and second protrusions 2111, 2112 in a discontinuous state. In addition, In this embodiment, the cross-sectional shapes of the first and second protrusions 2111, 2112 are rectangular for illustration, and the cross-sectional shapes of the corresponding first and second grooves 204, 205 are relative to those of the first and second grooves 204, 205. The cross-sectional shapes of the two protrusions 2111 and 2112 are mutually matched structural shapes, but the shapes are not limited to rectangles. In actual implementation, they can be triangular, semi-circular or other geometric shapes, and the same effect can be achieved.

Please also refer to Figures 3 and 4, which are a top view and a partial three-dimensional cross-sectional schematic diagram of the cooling liquid 3 flowing in the improved structure 2 of the liquid-cooled heat sink. Through the structural design of this creation, The first side 211 of the cover body 21 has the first and second protrusions 2111 and 2112 to form the guide channel 2113 structure design, and through the contact surface 2110 is correspondingly attached to the heat dissipation fin 203 to form The top surface of the free end is such that the first and second protrusions 2111, 2112 are inserted (inserted) in the first and second grooves 204, 205, when the cooling liquid 3 passes through the cover through the water inlet 22 After the body 21 reaches the guide channel 2113, then the cooling liquid 3 will flow into the flow channel 206 of the heat dissipation fins 203, and the cooling The liquid 3 will respectively flow out to the heat exchange chamber 2114 toward the two ends of the heat dissipation fins 203, and finally flow out through the water outlet 23 to complete the cooling liquid 3 in the liquid-cooled heat sink improved structure 2 The internal circulation, in other words, the guide channel 2113 formed by the first and second protrusions 2111, 2112 is directly molded on the cover 21. In this way, the flow direction of the cooling liquid can be controlled by The center of the heat dissipation fin 203 enters and discharges to both sides, so as to greatly increase the heat exchange efficiency between the cooling liquid 3 and the heat dissipation fin 203.

Please refer to Figure 5 and Figure 4 together. This is a three-dimensional exploded view of the second embodiment of the improved structure of the liquid-cooled heat sink. The corresponding relationship is the same as the above-mentioned improved structure of the liquid-cooled heat sink, so it will not be repeated here. However, the main difference between the improved structure of the liquid-cooled heat sink and the foregoing is that the first side 211 of the cover 21 A stop 2115 is formed corresponding to one end of the first and second protrusions 2111, 2112, and the stop 2115 is connected with the first and second protrusions 2111, 2112 and jointly defines the guide path 2113, With the structural design of the stop 2115, the cooling liquid 3 can be restricted from only passing through the guide channel 2113 and the non-directional turbulent flow of the cooling liquid 3 can be prevented, so as to achieve a rectification effect and greatly increase the heat exchange efficiency. Effect.

As mentioned above, this creation has the following advantages compared with the prior art: 1. It greatly increases the heat exchange efficiency; 2. It can make the flow of the cooling liquid smoother.

This creation has been described in detail above, but what is described above is only a preferred embodiment of this creation, and should not limit the scope of implementation of this creation. That is to say, all equal changes and modifications made in accordance with the scope of the application for this creation shall still fall within the scope of the patent for this creation.

201: Heat conduction surface

202: Heat Exchange Surface

203: cooling fins

2031: first notch

2032: second notch

204: The first groove

205: second groove

206: Runner

211: first side

2110: contact surface

2111: first convex part

2112: second convex

2113: Guidance Road

212: second side

22: water inlet

23: water outlet

Claims (8)

An improved structure of a liquid-cooled radiating head, comprising: a substrate, a heat exchange surface is formed on one side, a plurality of heat dissipation fins are arranged on the heat exchange surface, and the heat dissipation fins have a fixed end connected to the heat exchange surface And a free end away from the fixed end, a fin height is defined between the free end and the fixed end, a first groove and a second groove respectively extend from the free end of the heat dissipation fins to the fixed end A recess is provided with a depth smaller than the height of the fin, and a flow path is formed between the two adjacent heat dissipation fins; and a cover body having a first side and a second side, and the first side corresponds to the The heat exchange surfaces of the substrate cover and jointly define a heat exchange chamber for a cooling liquid to flow, and the first side corresponds to the first and second grooves to respectively protrude a first protrusion and a second protrusion, the The first and second convex parts are correspondingly embedded and combined with the first and second grooves, and the first and second convex parts jointly define a guide path, and a water inlet and a water outlet are separately provided on the cover body , The water inlet is connected to the guide channel, and the water outlet is connected to the heat exchange chamber. The improved structure of the liquid-cooled heat sink according to claim 1, wherein the first and second protrusions and the cover system are integrally formed. The improved structure of the liquid-cooled heat sink according to claim 1, wherein the first and second protrusions may be continuous or discontinuous. According to claim 1, the improved structure of the liquid-cooled heat sink, wherein the first side of the cover body corresponds to one end of the first and second protrusions to form a stop, and the stop is connected to the first , The two convex parts are connected and jointly define the guide path. The improved structure of the liquid-cooled heat sink according to claim 1, wherein the other side of the substrate opposite to the heat exchange surface further forms a heat conduction surface, and the heat conduction surface is in contact with a heat source. The improved structure of the liquid-cooled heat sink according to claim 1, wherein each of the heat dissipation fins defines a first notch and is arranged at corresponding intervals to form the first grooves, and each heat dissipation fin defines a first recess. Two notches are arranged at corresponding intervals to form the second groove. The improved structure of the liquid-cooled heat sink according to claim 1, wherein the first side further forms a contact surface, and the contact surface is correspondingly attached to the top surface of the free end of the heat dissipation fin so that the The cooling liquid flows into the flow channel after passing through the guide channel. The improved structure of the liquid-cooled heat sink according to claim 1, wherein the cross-sectional shape of the first and second protrusions is rectangular, triangular, semicircular or other geometric shapes, and the first and second grooves are The cross-sectional shape corresponds to the cross-sectional shape of the first and second recesses.

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