CN111818780A - Liquid-gas split cooling module - Google Patents

Abstract

The invention belongs to the field of heat dissipation modules, and relates to a liquid-gas split type heat dissipation module, comprising a heat dissipation plate, a condensation area on the heat dissipation plate, and a heat dissipation pipe in the condensation area. When the inflation process is completed, the hollow pipe spaces arranged on the surface of the heat dissipation plate are respectively set as condensation areas, the condensation area has built-in refrigerant, the condensation area is provided with at least one steam channel and at least one liquid return channel, and the bottom surface of the heat dissipation plate is fitted with heat dissipation pipes, The radiating pipe and the steam channel and between the radiating pipe and the liquid return channel are respectively connected by connecting components to form a complete cycle. The product of the invention has a reasonable and ingenious structure. By arranging a heat dissipation pipe on the bottom surface of the heat dissipation plate, the heat dissipation pipe is connected with the condensation area of the heat dissipation plate through the tee and the pipe. This structure effectively avoids the problem of blocking the pipe when the heat dissipation plate is bent. . Compared with the prior art solution, the performance of the product of the present invention is greatly improved, and at the same time, the weight of the product is lighter, and the manufacturing cost of the product is lower.

Description

Liquid-gas split cooling module

technical field

The invention belongs to the technical field of heat dissipation of electronic products, and relates to a liquid-gas split type heat dissipation module.

Background technique

At present, the TV side light heat dissipation structure on the market is formed of 2.5-3mm aluminum material, and the product weight is relatively large. As the TV power gradually increases, the performance of the aluminum substrate gradually cannot meet the needs of customers. In view of the above problems, an improved solution is proposed to set pipes on the bottom surface of the heat dissipation plate, the pipes and the condensation area inside the heat dissipation plate form a circulation structure, and the bottom of the heat dissipation plate is connected to the pipes after being bent. When the cooling plate is bent, it can block the pipes. At present, the bending of the two-phase flow cooling solution needs to increase the R angle at the bending point to ensure the smoothness of the air channel and the liquid channel, thereby ensuring the performance of the product.

Current customer demands: 1. Product weight reduction, 2. Performance improvement, 3. Cost must be within a controllable range.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a liquid-gas split type heat dissipation module. The heat dissipation module does not need to set an R angle at the bend, which can ensure the smoothness of the liquid-vapor channel and can effectively improve the heat conduction efficiency.

According to the technical solution of the present invention: a liquid-gas split type heat dissipation module, which is characterized by comprising a heat dissipation plate, a hollow condensation area is arranged on the surface of the heat dissipation plate, a refrigerant is built in the condensation area, and the condensation area is provided with at least one steam channel and There is at least one liquid return channel, and the bottom surface of the heat dissipation plate is fitted with a heat dissipation pipe. The heat dissipation pipe and the steam channel and between the heat dissipation pipe and the liquid return channel are respectively connected by connecting components to form a complete cycle.

As a further improvement of the present invention, the connecting assembly includes a tee and a conduit, one end of the conduit is connected to the interface of the tee, and the other end of the conduit is connected to the steam channel or the liquid return channel;

The tee is arranged on the bottom surface of the heat dissipation plate, and the outer end of the tee at the end of the bottom surface of the heat dissipation plate is blocked by a plug.

As a further improvement of the present invention, each of the tee is connected to two conduits respectively, the conduit corresponding to the tee at the end of the radiating plate is communicated with the steam channel, and the conduit corresponding to the tee in the middle of the radiating plate is communicated with the liquid return channel .

As a further improvement of the present invention, the tee includes a body seat, the body seat is provided with a through hole along the length direction, the top surface of the body seat is provided with a branch hole that communicates with the through hole, a limit boss is arranged in the branch hole, and the conduit It communicates with the branch hole and is positioned by the limit boss.

As a further improvement of the present invention, the branch holes and the through holes are both waist-shaped holes.

As a further improvement of the present invention, the bottom of the heat dissipation plate is provided with a vertical bending portion, and the heat dissipation pipe is attached to the bottom surface of the bending portion.

As a further improvement of the present invention, a condensation channel is provided in the condensation area, and the width of the condensation channel is the same.

As a further improvement of the present invention, a plurality of regular hexagons are arranged in the condensation area, and a condensation channel is formed between two adjacent regular hexagons.

As a further improvement of the present invention, the upper part of the condensation zone is a condensation gas storage zone, the lower part of the condensation zone is a condensation liquid storage zone, and the condensation gas storage zone is communicated with the condensation liquid storage zone;

The vapor passage communicates with the upper portion of the condensed gaseous storage area, and the upper end of the liquid return passage communicates with the bottom of the condensed liquid storage area.

As a further improvement of the present invention, the radiating pipe adopts a harmonica pipe.

The technical effect of the present invention is that: the product structure of the present invention is reasonable and ingenious. By arranging the heat dissipation pipe on the bottom surface of the heat dissipation plate, the heat dissipation pipe is connected with the condensation area of the heat dissipation plate through the tee and the pipe, and this structure effectively avoids the bending of the heat dissipation plate. There is a problem with blocked pipes. Compared with the prior art solutions, the performance of the product of the present invention is greatly improved, and at the same time, the weight of the product is lighter, and the manufacturing cost of the product is lower.

Description of drawings

FIG. 1 is a front view of the present invention.

Figure 2 is a rear view of the present invention.

FIG. 3 is a perspective view of the present invention.

FIG. 4 is a schematic structural diagram of a heat pipe and a connecting assembly.

FIG. 5 is a partial enlarged view of A in FIG. 4 .

FIG. 6 is a schematic view of the end surface of the heat pipe.

Figure 7 is a schematic diagram of the connection between the conduit and the tee.

Detailed ways

The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

In FIGS. 1 to 7 , it includes a heat dissipation plate 10 , a condensation area 11 , a vapor passage 12 , a liquid return passage 13 , a heat dissipation pipe 20 , a tee 30 , a conduit 40 , a plug 50 , and the like.

As shown in FIGS. 1 to 3 , the present invention is a liquid-gas split type heat dissipation module, comprising a heat dissipation plate 10, a hollow condensation area 11 is arranged on the surface of the heat dissipation plate 10, and a cooling medium is arranged in the condensation area 11, and the cooling medium can be It is a substance such as freon, water, etc., which can be adaptively selected according to the specific situation.

The condensation area 11 is provided with at least one steam channel 12 and at least one liquid return channel 13 , and the bottom surface of the heat dissipation plate 10 is fitted with a heat dissipation pipe 20 , between the heat dissipation pipe 20 and the steam passage 12 and between the heat dissipation pipe 20 and the liquid return passage 13 They are connected through connecting components to form a complete cycle.

As shown in FIGS. 5 to 7 , the connection assembly includes a tee 30 and a conduit 40 , one end of the conduit 40 is connected to the interface of the tee 30 , and the other end of the conduit 40 is connected to the steam channel 12 or the liquid return channel 13 .

Each of the tee 30 is connected to two conduits 40 respectively, the conduit 40 corresponding to the tee 30 at the end of the heat dissipation plate 10 communicates with the steam channel 12 , and the conduit corresponding to the tee 30 in the middle of the heat dissipation plate 10 is connected to the liquid return channel 13 connected.

The tee 30 is arranged on the bottom surface of the heat dissipation plate 10 , and the outer end of the tee 30 at the end of the bottom surface of the heat dissipation plate 10 is blocked by a plug 50 . The radiating pipe 20 , the tee 30 , the conduit 40 and the condensing area 11 together with the refrigerant inside the condensing area 11 constitute a complete circulation structure.

In order to effectively reciprocate the working process during operation, it can be understood that the upper part of the condensation zone 11 is a condensation gas storage zone, the lower part of the condensation zone 11 is a condensation liquid storage zone, and the condensation gas storage zone is communicated with the condensation liquid storage zone;

The vapor passage 12 is communicated with the upper part of the condensed gaseous storage area, and the upper end of the liquid return passage 13 is communicated with the bottom of the condensed liquid storage area

As shown in FIG. 2 , both ends of the condensation zone 11 are respectively provided with steam passages 12 , the steam passages 12 are drawn from the high point of the end of the condensation zone 11 , and the lower ends of the steam passages 12 are communicated with the conduits 40 on the corresponding tee 30 . , the conduit 40 is communicated with the heat pipe 20 via the tee 30; the bottom surface of the middle of the condensation zone 11 is communicated with the liquid return passage 13, and the lower end of the liquid return passage 13 is communicated with the conduit 40 on the corresponding tee 30, the corresponding conduit 40 communicates with the heat dissipation pipe 20 via the corresponding tee 30 .

The duct 40 in the product of the present invention is an aluminum tube, and the tee 30, the duct 40 and the heat sink 10 are connected by welding, which can save bending space;

As shown in FIG. 7 , the tee 30 includes a main body seat 31. The main body seat 31 is provided with a through hole 32 along the length direction. The top surface of the main body seat 31 is provided with a branch hole 33 that communicates with the through hole 32. The branch hole 33 is provided with a limiter. The positioning boss 34 and the conduit 40 communicate with the branch hole 33 and are positioned by the limiting boss 34 . The branch hole 33 and the through hole 32 are both waist-shaped holes. The installation process of the conduit 40 is as follows: the lower end of the conduit 40 is inserted into the matching branch hole 33 until the lower end of the conduit 40 abuts against the limiting boss 34 , and then the limiting boss 34 and the conduit 40 are welded and fixed.

The bottom of the heat dissipation plate 10 is provided with a vertical bending part, and the heat dissipation pipe 20 is attached to the bottom surface of the bending part.

The condensation area 11 is provided with condensation channels, and the widths of the condensation channels are the same. There are various design schemes for the arrangement of the condensation channel. The scheme adopted in the product of the present invention is as follows: a plurality of regular hexagons are arranged in the condensation area 11, and a condensation channel is formed between two adjacent regular hexagons. The condensation channel formed by the regular hexagon can achieve better circulation effect when working. In addition to the preferred solution in the present invention, the condensation channel can also be formed by the outer side of a circular, quadrangular, triangular or other shaped structure.

For the formation method of the condensation area 11, at least the following two methods can be used in the specific production; first, the shape structure of the condensation area 11 is punched out on the cooling plate 10 as the base plate, and then an aluminum plate used as a cover plate is brazed on the On the heat dissipation plate 10, a condensation area 11 is formed.

Another way to form the condensation zone 11 is to use the inflation process. First, rough one side of two aluminum plates of different thicknesses that are cut and formed, blow it clean, and cool it to room temperature; and then use the graphite printing method on the rough surface of the thicker aluminum plate. A graphite channel is formed on the surface of the aluminum plate; one side of the thicker aluminum plate with the graphite circuit channel is attached to the roughened surface of the thinner aluminum plate, the three sides are aligned, and the edges are riveted; it is heated to a certain temperature in a continuous heating furnace and maintained for a certain period of time, The double-layer aluminum plate taken out from the continuous furnace is hot-rolled to form a composite aluminum plate; the composite aluminum plate is softened and annealed, and after cooling to room temperature, a process hole is drilled to the graphite layer at the position of the graphite circuit channel of the aluminum plate, and the air inlet pipe is pryed high; The composite aluminum plate is placed on the bulging template of the large-tonnage hydraulic press, the process hole is aligned with the air inlet, the upper template is attached to the surface of the aluminum plate, and the pipeline is filled with high-pressure fluid until the pipeline expands, forming one side is completely flat, and the other side of the channel is bulging. The clad aluminum plate forms the condensation zone 11 .

The radiating pipe 20 adopts an extruded harmonica pipe, and a plurality of bars arranged in the harmonica pipe divide the inner cavity of the radiating pipe 20 into a plurality of passages that pass through the length direction.

It can be understood that, the heat dissipation plate 10 is provided with a wire hole for wiring when used.

The working principle of the present invention is as follows: after the product of the present invention is installed, during operation, the heat source transfers heat to the evaporation area, that is, the heat dissipation pipe 20 of the present invention, and the cooling medium (usually water is selected) becomes water vapor, and the water vapor flows along the The vapor passage 12 flows into the condensation zone 11. After the water vapor is condensed in the condensation zone 11, it becomes a liquid and is stored in the lower part of the condensation zone 11. As the refrigerant level in the condensation zone 11 rises, the liquid water flows into the evaporation zone along the liquid return passage 13 ( Heat pipe 20), push the water vapor bubbles in the heat pipe 20 to flow to the steam channel 12, and then flow into the condensation area 11, the water vapor condenses into liquid water in the condensation area 11, and then repeat the above steps to form a complete cycle process.

The product of the invention can effectively improve the performance in use, and at the same time greatly reduce the weight, and the size is controllable.

Claims (10)

1. A liquid-gas split type heat dissipation module, characterized in that it comprises a heat dissipation plate (10), and a hollow condensation area (11) is arranged on the surface of the heat dissipation plate (10), the condensation area (11) has a built-in refrigerant, and the condensation area (11) At least one steam channel (12) and at least one liquid return channel (13) are provided, and the bottom surface of the heat dissipation plate (10) is fitted with a heat dissipation pipe (20), between the heat dissipation pipe (20) and the steam passage (12) And, the radiating pipe (20) and the liquid return channel (13) are respectively communicated with each other through connecting components to form a complete cycle. 2 . The liquid-gas split type heat dissipation module according to claim 1 , wherein the connecting assembly comprises a tee (30), a conduit (40), and an interface between one end of the conduit (40) and the tee (30). 3 . connected, the other end of the conduit (40) is connected with the steam channel (12) or the liquid return channel (13); The tee (30) is arranged on the bottom surface of the heat dissipation plate (10), and the outer end of the tee (30) at the end of the bottom surface of the heat dissipation plate (10) is blocked by a plug (50). 3. The liquid-gas split type heat dissipation module according to claim 2, characterized in that: each of the tee (30) is connected to two conduits (40) respectively, and the tee ( 30) The corresponding conduit (40) is communicated with the steam passage (12), and the conduit corresponding to the tee (30) in the middle of the heat dissipation plate (10) is communicated with the liquid return passage (13). 4. The liquid-gas split type heat dissipation module according to claim 2 or 3, wherein the tee (30) comprises a body seat (31), and the body seat (31) is provided with a through hole (31) along the length direction. 32), the top surface of the body seat (31) is provided with a branch hole (33) that communicates with the through hole (32), a limit boss (34) is arranged in the branch hole (33), the conduit (40) and the branch hole ( 33) Connected and positioned by the limit boss (34). 5 . The liquid-gas split type heat dissipation module according to claim 2 or 3 , wherein the branch holes ( 33 ) and the through holes ( 32 ) are both waist-shaped holes. 6 . 6 . The liquid-gas split type heat dissipation module according to claim 1 , wherein the bottom of the heat dissipation plate ( 10 ) is provided with a vertical bending portion, and the heat dissipation pipe ( 20 ) is attached to the bottom surface of the bending portion. 7 . 7 . The liquid-gas split type heat dissipation module according to claim 1 , wherein the condensation area ( 11 ) is provided with a condensation channel, and the width of the condensation channel is the same. 8 . 8 . The liquid-gas split type heat dissipation module according to claim 7 , wherein the condensation area ( 11 ) is provided with a plurality of regular hexagons, and a condensation channel is formed between two adjacent regular hexagons. 9 . 9. The liquid-gas split type heat dissipation module according to claim 1, characterized in that: the upper part of the condensation zone (11) is a condensation gas storage zone, the lower part of the condensation zone (11) is a condensation liquid storage zone, and the condensation gas storage zone The storage area is communicated with the condensed liquid storage area; The vapor passage (12) is communicated with the upper part of the condensed gaseous storage area, and the upper end of the liquid return passage (13) is communicated with the bottom of the condensed liquid storage area. 10 . The liquid-gas split type heat dissipation module according to claim 1 , wherein the heat dissipation pipe ( 20 ) adopts a harmonica pipe. 11 .

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