Two-phase flow local heat dissipation reinforced liquid cooling plate

Abstract

The utility model discloses a two-phase flow local heat dissipation reinforced liquid cooling plate which comprises a VC bottom cover, a VC upper cover and a top cover, the VC upper cover is installed on the VC bottom cover, a first heat dissipation cavity is formed between the VC bottom cover and the VC upper cover, and heat dissipation shovel teeth are arranged on the upper surface of the VC upper cover; the top cover is installed on the VC upper cover and covers the heat dissipation shovel teeth, a second heat dissipation cavity is formed between the VC upper cover and the top cover, and the top cover is provided with a water cooling connector; when the heat dissipation structure is used, a heat source is installed on the lower surface of the VC bottom cover, heat of the heat source is transmitted into the VC bottom cover, fluid absorbs the heat of the heat source and transmits the heat to the VC upper cover, the fluid in the second heat dissipation cavity drives the heat of the VC upper cover and the heat dissipation shovel teeth of the VC upper cover in the flowing process, and the purpose of rapid heat dissipation is achieved. In addition, the heat dissipation shovel teeth are integrally formed on the VC upper cover and are connected with the water cooling connector and the VC bottom cover, and heat transfer resistance is greatly reduced. The VC bottom cover and the VC upper cover conduct heat efficiently, heat transfer of a high-integration and large-density heat source is facilitated, and the temperature of the heat source is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation devices, and more specifically to a two-phase flow local heat dissipation enhanced liquid cooling plate. Background Art

[0002] Water cooling plates are currently commonly used in the electronics field. In the production process of mobile phones and notebooks, it is necessary to process the heat generated by electronic components in working state. Water cooling plates generally include: heat dissipation shovel base, upper cover and joints. The heat source is installed at the bottom of the heat dissipation shovel base. The heat of the heat source is transferred to the heat dissipation shovel base, and then transferred to the heat dissipation shovel through the heat dissipation shovel base. When the fluid flows through the heat dissipation shovel, it takes away the heat to achieve the purpose of heat dissipation.

[0003] The heat transfer efficiency of the water cooling plate structure in the prior art is limited, and the utilization rate of the heat dissipation shovel-tooth microchannel is relatively low, which cannot meet the needs of high-power and high-density heat dissipation. Utility Model Content

[0004] In view of this, the utility model provides a two-phase flow local heat dissipation enhanced liquid cooling plate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a two-phase flow local heat dissipation enhanced liquid cooling plate, comprising:

[0006] VC bottom cover;

[0007] The VC upper cover is installed on the VC bottom cover, a first heat dissipation cavity is formed between the VC bottom cover and the VC upper cover, a fluid is arranged in the first heat dissipation cavity, and heat dissipation shovel teeth are arranged on the upper surface of the VC upper cover;

[0008] The top cover is installed on the VC upper cover and covers the heat dissipation shovel teeth. A second heat dissipation cavity is formed between the VC upper cover and the top cover. The top cover is provided with a water cooling joint, which is connected to the second heat dissipation cavity. The fluid flows into and out of the second heat dissipation cavity through the water cooling joint.

[0009] When this product is in use, the heat source is installed on the lower surface of the VC bottom cover, the heat of the heat source is transferred to the VC bottom cover, the fluid is stored in the first heat dissipation cavity, the fluid absorbs the heat of the heat source and transfers it to the VC upper cover, and finally transfers it to the heat dissipation shovel teeth. During the flow of the fluid in the second heat dissipation cavity, the heat of the VC upper cover is taken away, thereby achieving the purpose of rapid heat dissipation; in addition, the heat dissipation shovel teeth are integrally formed on the VC upper cover, which greatly reduces the transfer thermal resistance; the VC bottom cover and VC upper cover have efficient heat transfer, which is conducive to the heat transfer of highly integrated and high-density heat sources, and effectively reduces the temperature of the heat source.

[0010] As a preferred solution of the utility model, a copper column is arranged in the first heat dissipation cavity, and the copper column is supported on the upper surface of the VC bottom cover and the lower surface of the VC upper cover; after the copper column is arranged, it can prevent the positions of the VC upper cover and VC bottom cover corresponding to the first heat dissipation cavity from being sunken or bulged, thereby ensuring the use effect of the product.

[0011] As a preferred solution of the utility model, the copper column is integrally formed on the VC bottom cover and protrudes toward the VC upper cover; after the copper column is formed on the VC bottom cover, it can be in contact with and connected to the VC upper cover, or connected by adhesive, or welded, to prevent the VC upper cover from bulging upward.

[0012] As a preferred solution of the utility model, the positions of the first heat dissipation cavity and the second heat dissipation cavity correspond to each other up and down, and the heat dissipation shovel teeth are located in the second heat dissipation cavity and correspond to the top of the first heat dissipation cavity;

[0013] The VC upper cover is provided with a plurality of groups of heat dissipation shovel teeth arranged and distributed, heat dissipation gaps are formed between the fins of the heat dissipation shovel teeth, and the heat dissipation shovel teeth are in contact with the lower surface of the top cover;

[0014] The heat of the heat source is transferred to the heat dissipation shovel teeth through the liquid in the first heat dissipation cavity, and then dissipated through the fluid in the second heat dissipation cavity, so the heat dissipation effect is good.

[0015] As a preferred solution of the utility model, a limiting component is provided in the second heat dissipation cavity, and the flow path of the fluid in the second heat dissipation cavity is limited by the limiting component. The longer the flow path of the fluid in the second heat dissipation cavity is, the better the contact with all the heat dissipation shovel teeth is, the heat of the heat dissipation shovel teeth is absorbed, and the heat dissipation effect is better.

[0016] As a preferred solution of the utility model, the second heat dissipation cavity is divided into a first area and a second area by a limiting component; the water-cooling joint includes: a first water-cooling joint and a second water-cooling joint, the first water-cooling joint is located in the first area, the second water-cooling joint is located in the second area, the first water-cooling joint is an inlet, and the second water-cooling joint is an outlet, the first water-cooling joint and the second water-cooling joint are distributed in different areas, the path and area through which the fluid flows are larger, and the heat dissipation effect is better.

[0017] As a preferred solution of the utility model, a capillary structure is arranged on the upper surface of the VC bottom cover and / or the lower surface of the VC upper cover and / or the surface of the copper column; the capillary structure can be a grooved capillary structure, a porous capillary structure, a mesh capillary structure, a powder sintered capillary structure or a composite capillary structure, which can enhance the heat dissipation effect.

[0018] As a preferred solution of the utility model, the VC bottom cover is provided with a first mounting groove and a second mounting groove, and the edge of the VC upper cover is supported in the first mounting groove; the edge of the top cover is supported in the second mounting groove and pressed against the edge of the VC upper cover; the installation relationship between the VC bottom cover, VC upper cover and top cover is specifically defined here, and can be fixed by welding.

[0019] As a preferred solution of the utility model, the VC bottom cover is provided with a sink groove, the lower surface of the VC upper cover is a plane, and the VC upper cover is installed on the VC bottom cover to cover the sink groove to form the first heat dissipation cavity.

[0020] As a preferred solution of the utility model, the VC bottom cover or VC upper cover is provided with a VC injection tube, which is connected to the first heat dissipation cavity. Liquid is injected into the first heat dissipation cavity through the VC injection tube. After the injection is completed, the VC injection tube can be removed and the injection port can be sealed.

[0021] Other beneficial technical effects of the utility model are embodied in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the two-phase flow local heat dissipation enhanced liquid cooling plate of the utility model;

[0024] Figure 2 It is an exploded view of the two-phase flow local heat dissipation enhanced liquid cooling plate of the utility model;

[0025] Figure 3 This is an exploded view of another angle of the two-phase flow local heat dissipation enhanced liquid cooling plate of the utility model;

[0026] Figure 4 It is a longitudinal cross-sectional schematic diagram of the two-phase flow local heat dissipation enhanced liquid cooling plate of the utility model. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] Two-phase flow local heat dissipation enhanced liquid cooling plate, please refer to Figure 1-4As shown, it includes: a VC bottom cover 100, a VC upper cover 200 and a top cover 300.

[0029] The VC bottom cover 100 can be understood as a temperature averaging plate, which has a better heat transfer coefficient. The VC bottom cover 100 is in contact with a heat source, which is not shown in the figure. The product of the utility model enables the heat of the heat source to be transferred to the VC bottom cover 100 faster and more evenly.

[0030] The VC upper cover 200 is installed above the VC bottom cover 100 , and a first heat dissipation cavity 101 is formed between the VC bottom cover 100 and the VC upper cover 200 . A fluid is arranged in the first heat dissipation cavity 101 , and heat dissipation shovel teeth 210 are arranged on the upper surface of the VC upper cover 200 ;

[0031] The fluid may be liquid such as water or coolant, which can quickly and evenly transfer the heat of the VC bottom cover 100 to the VC top cover 200 in the first heat dissipation cavity 101 , and then transfer the heat from the VC top cover 200 to the heat dissipation shovel teeth 210 .

[0032] The top cover 300 is installed on the VC upper cover 200 and covers the heat dissipation shovel teeth 210, and the heat dissipation shovel teeth 210 are integrally formed on the VC upper cover 200; a second heat dissipation cavity 201 is formed between the VC upper cover 200 and the top cover 300, and the top cover 300 is provided with a water cooling joint 310, which is connected to the second heat dissipation cavity 201, and the fluid flows into and out of the second heat dissipation cavity 201 through the water cooling joint 310;

[0033] Similarly, the fluid here can also be liquid such as water, coolant, etc., which can quickly take away the heat transferred to the VC upper cover 200 and the heat dissipation shovel teeth 210 in the second heat dissipation cavity 201.

[0034] When using, Figure 4 As shown, the heat source is installed on the lower surface of the VC bottom cover 100, and the heat of the heat source is transferred to the lower surface of the VC bottom cover 100, and then transferred to the VC upper cover 200 through the fluid in the first heat dissipation cavity 101. During the flow of the fluid in the second heat dissipation cavity 201, the heat is further taken away to achieve the purpose of heat dissipation.

[0035] The efficient heat transfer of the VC bottom cover 100 and the VC upper cover 200 is beneficial to the heat transfer of highly integrated and high-density heat sources, and better reduces the temperature of the heat sources. Furthermore, the heat dissipation shovel teeth 210 and the VC upper cover 200 are designed as an integrated structure, which greatly reduces the transfer thermal resistance.

[0036] In one embodiment, a copper column 110 is provided in the first heat dissipation cavity 101, and the copper column 110 is supported on the upper surface of the VC bottom cover 100 and the lower surface of the VC upper cover 200; the copper column 110 mainly plays a supporting role to prevent the first heat dissipation cavity 101 from being sunken or bulged, which affects the use of the product.

[0037] There are multiple groups of copper pillars 110 arranged horizontally and vertically in the first heat dissipation cavity 101 to achieve the purpose of comprehensive support and further prevent local depression or bulge;

[0038] Furthermore, the copper pillar 110 is integrally formed on the VC bottom cover 100 and protrudes toward the VC upper cover 200 . When the VC upper cover 200 and the VC bottom cover 100 are combined, the top of the copper pillar 110 is processed and fixed to the VC upper cover 200 .

[0039] In one embodiment, the positions of the first heat dissipation cavity 101 and the second heat dissipation cavity 201 correspond to each other vertically, and the heat dissipation shovel position 210 is located in the second heat dissipation cavity 201 and corresponds to the upper part of the first heat dissipation cavity 101;

[0040] like Figure 4 As shown, the heat dissipation shovel teeth 210 are located above the first heat dissipation cavity 101, which facilitates the heat dissipation shovel teeth 210 to absorb heat. The cross-sectional area of ​​the second heat dissipation cavity 201 can be equal to the cross-sectional area of ​​the first heat dissipation cavity 101, or the cross-sectional area of ​​the second heat dissipation cavity 201 can be larger than the cross-sectional area of ​​the first heat dissipation cavity 101 for better heat dissipation.

[0041] Furthermore, the VC upper cover 200 is provided with a plurality of groups of heat dissipation shovel teeth 210 arranged and distributed, a heat dissipation gap is formed between the fins of the heat dissipation shovel teeth 210, and the heat dissipation shovel teeth 210 are in contact with the lower surface of the top cover 300;

[0042] like Figure 2 As shown, the VC upper cover 200 is provided with eight groups of heat dissipation shovel teeth 210, and the eight groups of heat dissipation shovel teeth 210 are arranged in 2 horizontal and 4 rows, and there are gaps between adjacent heat dissipation shovel teeth 210;

[0043] Of course, the number of the heat dissipation skiving teeth 210 can be changed.

[0044] Furthermore, a limiting member 320 is provided in the second heat dissipation cavity 201, and the flow path of the fluid in the second heat dissipation cavity 201 is limited by the limiting member 320;

[0045] like Figure 2 and Figure 3 As shown, corresponding to the gaps between the heat dissipation scraper teeth 210 in each row, a limiting member 320 is provided on the top cover 300 . After the top cover 310 is installed on the VC upper cover 200 , the limiting member 320 is stuck in the gaps.

[0046] Furthermore, the second heat dissipation cavity 201 is divided into a first area and a second area by a limiting member 320; the water cooling joint 310 includes: a first water cooling joint 311 and a second water cooling joint 312, the first water cooling joint 311 is located in the first area, and the second water cooling joint 312 is located in the second area;

[0047] like Figure 4As shown, along the dotted line, the left side is the first area, and the right side is the second area; Figure 2 As shown, the four heat dissipation shovel teeth 210 at the lower right are the first area, and the remaining four heat dissipation shovel teeth 210 are the second area;

[0048] The blocking effect of the limiting member 320 can effectively limit the fluid path, and the fluid flows in from the first water-cooling joint 311 , flows through each heat-dissipating tooth 210 in the second heat-dissipating cavity 201 , and finally flows out from the second water-cooling joint 312 .

[0049] In one embodiment, if Figure 2 As shown, the VC bottom cover 100 is provided with a first mounting groove 120 and a second mounting groove 130, and the edge of the VC upper cover 200 is supported in the first mounting groove 120; the edge of the top cover 300 is supported in the second mounting groove 130 and pressed against the edge of the VC upper cover 200;

[0050] Specifically, Figure 4 As shown, the VC bottom cover 100 is provided with a sink, and the lower surface of the VC upper cover 200 is a plane. The VC upper cover 200 is installed on the VC bottom cover 100 to cover the sink to form the first heat dissipation cavity 201, and the copper column 110 is supported on the bottom and top surfaces of the first heat dissipation cavity 201, that is, the inner wall of the sink and the lower surface of the VC upper cover 200;

[0051] During installation, the VC bottom cover 100 , the VC upper cover 200 and the top cover 300 may be fixed by welding.

[0052] Furthermore, a capillary structure is provided on the upper surface of the VC bottom cover 100 and / or the lower surface of the VC top cover 200 and / or the surface of the copper pillar 110. The capillary structure may be a grooved capillary structure, a porous capillary structure, a mesh capillary structure, a powder sintered capillary structure or a composite capillary structure, which can enhance the heat dissipation effect.

[0053] Further, the VC bottom cover 100 or the VC upper cover 200 is provided with a VC liquid injection pipe 140, and the VC liquid injection pipe 140 is connected to the first heat dissipation cavity 101, and liquid is injected into the first heat dissipation cavity 101 through the VC liquid injection pipe 140;

[0054] Optionally, after liquid is injected into the first heat dissipation cavity 101 through the VC injection tube 140 , the VC injection tube 140 may be removed and the injection hole may be blocked, and liquid will not leak after blocking.

[0055] Here, the first heat dissipation cavity 101 and the second heat dissipation cavity 201 are both filled with cooling liquid.

[0056] The first heat dissipation cavity 101 can be filled with coolant, and the heat of the heat source is transferred to the coolant in the first heat dissipation cavity 101 through the VC bottom cover 100, and then transferred to the VC upper cover 200 and the heat dissipation shovel teeth 210 through the coolant in the first heat dissipation cavity 101. The coolant is input into the second heat dissipation cavity 201 through the first water cooling joint 311, and the coolant is sent out through the second cooling head 312. When the coolant flows through the second heat dissipation cavity 201 and the heat dissipation shovel teeth 210, the heat is effectively taken away; the heat dissipation efficiency is high and the heat dissipation effect is good.

[0057] or,

[0058] The first heat dissipation cavity 101 may be partially filled with coolant, that is, the first heat dissipation cavity 101 is not fully loaded, and the heat of the heat source is transferred to the coolant in the first heat dissipation cavity 101 through the VC bottom cover 100. Through the action of the capillary structure, the coolant evaporates quickly and contacts the lower surface of the VC upper cover 200. At this time, the VC upper cover 200 is equivalent to the cold end, which absorbs the heat of the evaporated gaseous coolant to liquefy the gaseous coolant again; heat exchange is completed through gas phase change; heat is transferred to the heat dissipation shovel teeth 210, and coolant is input into the second heat dissipation cavity 201 through the first water-cooling joint 311, and the coolant is sent out through the second cooling head 312. When the coolant flows through the second heat dissipation cavity 201 and the heat dissipation shovel teeth 210, the heat is effectively taken away, and the heat dissipation efficiency is high and the heat dissipation effect is good.

[0059] In addition, the first water-cooling joint 311 and the second water-cooling joint 312 may be connected to structures such as a water pump and a circulation box so that the coolant can circulate continuously to dissipate heat.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Two-phase flow local heat dissipation enhanced liquid cooling plate, characterized by: include: VC bottom cover; The VC upper cover is installed on the VC bottom cover, a first heat dissipation cavity is formed between the VC bottom cover and the VC upper cover, a fluid is arranged in the first heat dissipation cavity, and heat dissipation shovel teeth are arranged on the upper surface of the VC upper cover; The top cover is installed on the VC upper cover and covers the heat dissipation shovel teeth. A second heat dissipation cavity is formed between the VC upper cover and the top cover. The top cover is provided with a water cooling joint, which is connected to the second heat dissipation cavity. The fluid flows into and out of the second heat dissipation cavity through the water cooling joint.

2. The two-phase flow local heat dissipation enhanced liquid cooling plate according to claim 1, characterized in that: A copper column is arranged in the first heat dissipation cavity, and the copper column is supported on the upper surface of the VC bottom cover and the lower surface of the VC upper cover.

3. The two-phase flow local heat dissipation enhanced liquid cooling plate according to claim 2, characterized in that: The copper column is integrally formed on the VC bottom cover and protrudes toward the VC top cover.

4. The two-phase flow local heat dissipation enhanced liquid cooling plate according to claim 1, characterized in that: The first heat dissipation cavity and the second heat dissipation cavity are located in a vertically corresponding relationship, and the heat dissipation shovel teeth are located in the second heat dissipation cavity and correspond to the upper part of the first heat dissipation cavity; The VC upper cover is provided with a plurality of groups of heat dissipation shovel teeth arranged and distributed, heat dissipation gaps are formed between the fins of the heat dissipation shovel teeth, and the heat dissipation shovel teeth are in contact with the lower surface of the top cover.

5. The two-phase flow local heat dissipation enhanced liquid cooling plate according to claim 4, characterized in that: A limiting component is arranged in the second heat dissipation cavity, and a flow path of the fluid in the second heat dissipation cavity is limited by the limiting component.

6. The two-phase flow local heat dissipation enhanced liquid cooling plate according to claim 5, characterized in that: The second heat dissipation cavity is divided into a first area and a second area by a limiting component; the water-cooling joint includes: a first water-cooling joint and a second water-cooling joint, the first water-cooling joint is located in the first area, and the second water-cooling joint is located in the second area.

7. The two-phase flow local heat dissipation enhanced liquid cooling plate according to claim 2, characterized in that: A capillary structure is arranged on the upper surface of the VC bottom cover and / or the lower surface of the VC upper cover and / or the surface of the copper column.

8. The two-phase flow local heat dissipation enhanced liquid cooling plate according to any one of claims 1 to 7, characterized in that: The VC bottom cover is provided with a first mounting groove and a second mounting groove, the edge of the VC upper cover is supported in the first mounting groove; the edge of the top cover is supported in the second mounting groove and pressed tightly on the edge of the VC upper cover.

9. The two-phase flow local heat dissipation enhanced liquid cooling plate according to claim 8, characterized in that: The VC bottom cover is provided with a sinking groove, and the lower surface of the VC upper cover is arranged in a plane. The VC upper cover is installed on the VC bottom cover and covers the sinking groove to form the first heat dissipation cavity.

10. The two-phase flow local heat dissipation enhanced liquid cooling plate according to any one of claims 1 to 7, characterized in that: The VC bottom cover or the VC upper cover is provided with a VC liquid injection pipe, and the VC liquid injection pipe is connected to the first heat dissipation cavity.

Images