CN115046418A

CN115046418A - Press tube type water cooling plate structure

Info

Publication number: CN115046418A
Application number: CN202210632807.1A
Authority: CN
Inventors: 陈旦军; 李国辉; 黄传文
Original assignee: Asia Vital Components Co Ltd
Current assignee: Asia Vital Components Co Ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-09-13

Abstract

The invention relates to a pressure pipe type water cooling plate structure, which comprises: a plate body is provided with a channel, a water-cooling pipe is pressed and embedded into the channel, the water-cooling pipe is provided with a water-cooling pipe channel for a working medium to circulate, and the surface of the inner wall of the channel of the water-cooling pipe is annularly provided with a plurality of staggered convex bodies and channels, so that the contact area with the working medium is greatly increased and/or the working medium circulates in the water-cooling pipe channel in a turbulent state, and the heat exchange capacity of the water-cooling plate is further increased.

Description

Press tube type water cooling plate structure

Technical Field

The invention relates to the field of water cooling plates, in particular to a pressure pipe type water cooling plate structure.

Background

The pressed Tube type water cooling plate (extruded Tube cold plate) is formed by machining a channel with a corresponding shape on a substrate (such as a copper plate or an aluminum plate) by adopting CNC (computerized numerical control), embedding (embedding) a bent copper Tube, and filling high-thermal-conductivity epoxy resin between the copper Tube and the channel of the substrate or adopting solder paste welding for reinforcement and auxiliary heat transfer. The copper pipe is flattened while being embedded (embedded), and then the surface of the copper pipe is milled to ensure that one exposed surface of the copper pipe and one surface of the substrate are in the same plane, so that the heating component is in direct contact with the copper pipe, and the heat is directly conducted away. The pipeline of the seamless copper pipe forms a water channel for the circulation of working media, so that the risk of liquid leakage is avoided, and heating components can be installed on two sides.

Referring to fig. 1A to 1C, a conventional pressing tube type water-cooling plate is schematically illustrated, which includes a water-cooling base plate 11 and a copper tube 12, wherein a groove 13 is formed on the water-cooling base plate 11 by CNC groove milling, the copper tube 12 is press-fitted into the groove 13, and an exposed surface of the copper tube 12 is pressed or milled flat by surface profile processing, such as pressing or milling, so that the exposed surface of the copper tube 12 and the water-cooling base plate 11 are in the same plane, thereby contacting the heat generating component. The copper tube 12 has a pipe 121 extending through both ends of the copper tube 12, and a working medium 14 such as water or cold coal or ethanol flows through the pipe 121.

However, the contact area between the conventional copper tube 12 (as shown in fig. 1A) and the heat generating component is small, so that the heat of the heat generating component cannot be sufficiently removed. Particularly, the copper tube 12 is bent into a spiral winding type (as shown in fig. 1B) or an S winding type on the water-cooled substrate 11 in an attempt to increase the contact area between the copper tube 12 and the heat generating component and to extend the flowing time of the working medium 14 through the length of the winding tube to improve the heat exchange effect.

However, the inner wall of the pipe 121 of the copper pipe 12 of the above-mentioned prior art is smooth without any features, the working medium flows in the pipe 121 of the copper pipe 12 in a laminar state in which the working medium is layered and parallel to each other without mixing, the flow rate of the working medium 14 located at the substantial center of the pipe 121 is fast, and the flow rate of the working medium near the inner wall of the pipe 121 is slow (see fig. 1C). Only the working medium 14 close to the inner wall of the tube 121 generates heat exchange effect, and the working medium 14 in the center of the tube 121 rapidly flows through the tube 121 and cannot achieve effective heat exchange, so that the total heat exchange amount is small, and the heat exchange capability is poor.

Disclosure of Invention

Therefore, how to solve the above problems and disadvantages is a direction in which the present inventors and related manufacturers in the industry desire to research and improve.

To achieve the above object, the present invention provides a pressing pipe type water-cooling plate structure, comprising:

a plate body provided with a channel;

the water-cooling pipe is arranged in the channel and is provided with a first end, a second end and a water-cooling pipe channel, the water-cooling pipe channel is communicated from the first end to the second end, a plurality of convex bodies arranged at intervals are annularly arranged on the inner wall of the pipeline of the water-cooling pipe channel, and a channel is formed between every two convex bodies.

The pressure tube type water-cooling plate structure, wherein: the plurality of protrusions and the channel are horizontally disposed in the water-cooled tube channel.

The pressure tube type water-cooling plate structure, wherein: the protrusion and the plurality of channels are disposed in the water tube channel at a twist angle.

The pressure tube type water-cooling plate structure, wherein: the convex body protrudes from the inner wall of the pipeline to the center of the water-cooling pipeline passage and is provided with a fixed end and a free end, the fixed end is combined with the inner wall of the pipeline, and the free end protrudes towards the center of the pipeline.

The pressure tube type water-cooling plate structure, wherein: the boss extends from the first end to the second end.

The pressure tube type water-cooling plate structure, wherein: the plate body is provided with an upper surface and a lower surface, and the channel is positioned on the upper surface or the lower surface.

The pressure tube type water-cooling plate structure, wherein: the channel is provided with a channel opening side, the water-cooling pipe is provided with an exposed surface, and the exposed surface of the water-cooling pipe is exposed from the channel opening side and is in the same plane with the upper surface or the lower surface of the plate body.

The pressure tube type water-cooling plate structure, wherein: the plate body is provided with an upper surface and a lower surface, and the channel is positioned between the upper surface and the lower surface.

The invention has the advantage of providing the pressure pipe type water cooling plate structure which increases the contact area between the water cooling pipeline of the water cooling plate and a working medium so as to improve the heat exchange quantity of the water cooling plate.

Another advantage of the present invention is to provide a pressing tube type water-cooling plate structure that the working medium in the water-cooling pipe of the water-cooling plate flows in a turbulent state to increase the surface heat exchange coefficient in the water-cooling pipe, thereby increasing the heat exchange capacity of the water-cooling plate.

Still another advantage of the present invention is to provide a pressing tube type water cooling plate structure, wherein the protrusion protrudes from the inner wall of the pipe to the center of the water cooling tube channel, so that the wall thickness of the water cooling tube is not thinned, and the pressing tube type water cooling plate structure is not easily broken and damaged and maintains the structural strength.

Drawings

FIGS. 1A-1C are prior art schematic diagrams;

FIGS. 2A and 2B are exploded and assembled views of the present invention;

FIGS. 3A-3C are schematic views of the channels of the present invention in various positions on the plate body;

FIGS. 4A and 4B are a perspective view and a side view showing a straight arrangement of a projection and a channel in a water-cooling pipe passage according to the present invention;

FIG. 4C is a cross-sectional view of a section of FIG. 4A illustrating the flow of working medium therein;

FIGS. 5A and 5B are a perspective view and a side view of a protrusion and a channel in a channel of a water-cooling pipe of the present invention at a twisted angle;

fig. 5C and 5D are cross-sectional views of a cut-off section and a front view of the cut-off section of fig. 5A to show the flow state of the working medium therein.

The reference numbers indicate: a water-cooled substrate 11; a copper pipe 12; a pipe 121; a groove 13; a working medium 14; a water-cooling plate 20; a plate body 21; an upper surface 211; a lower surface 212; a channel 213; channel open side 2131; the upper plate portion 216 a; a lower plate portion 217 a; a water-cooled tube 22; a first end 221; a second end 222; a water cooled tube passage 223; the inner wall 2231 of the conduit; an exposed surface 224; a convex body 225; a fixed end 2251; a free end 2252; a channel 226; the torsion angle Φ; a working medium 30; a heat generating component 40; center X0; the heat exchange surface area A; the surface heat exchange coefficient h; the heat exchange amount Q.

Detailed Description

The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.

Please refer to fig. 2A and fig. 2B, which are schematic exploded and assembled views of the present invention. As shown in the figure, a water cooling plate 20 includes a plate body 21 and a water cooling tube 22, the plate body 21 is made of a metal material with high thermal conductivity, such as copper or aluminum or stainless steel or titanium or alloy, and the water cooling tube 22 is made of copper or copper alloy or aluminum alloy. The plate 21 has an upper surface 211 and a lower surface 212, and any one of the upper surface 211 and the lower surface 212 is optionally provided with a channel 213, in this figure, the channel 213 is shown on the upper surface 211 and has a channel open side 2131 aligned with the upper surface 211. In one embodiment, a groove milling technique is used to machine the groove 213 along a predetermined shape on the top surface 211 using a machine tool such as a CNC machine. The water-cooled tube 22 is fitted to the shape of the channel 213 and is inserted into the channel 213 by insert-press fitting, and has an exposed surface 224 exposed from the open side 2131 of the channel, and the exposed surface 224 is flush with the upper surface 211 of the plate body 21 by surface-shaping (e.g., pressing or milling).

The shape of the channel 213 and the shape of the water-cooling tube 22 are not limited, and both are shown as U-shaped in the present figure, but they are not limited thereto, and may be spiral-shaped, S-shaped, or serpentine.

Please refer to fig. 3A-3C, which are schematic views of the channels at different positions of the plate body according to the present invention. Referring to fig. 2A and 2B together, although the channel 213 and the water-cooled tube 22 are shown on the upper surface 211 of the plate 21, the exposed surface 224 is coplanar with the upper surface 211 and contacts a heat generating component 40 (fig. 3A). However, without limitation, in other alternative embodiments, the channel 213 and the water cooling tubes 22 are located on the lower surface 212 of the plate body 21, and the exposed surface 224 is coplanar with the lower surface 212 and contacts the heat generating component 40 (as shown in fig. 3B).

In yet another alternative implementation, the channel 213 and the water-cooled tubes 22 are located between the upper surface 211 and the lower surface 212 of the plate body 21. Thus, the plate 21 includes a top plate 216a and a bottom plate 217a that are abutted against each other. The water cooling tube 22 is sandwiched between the upper plate portion 216a and the lower plate portion 217a, the upper surface 211 is located on the top side of the upper plate portion 216a, the lower surface 212 is located on the bottom side of the lower plate portion 217a, and one or two heating elements 40 are in contact with the upper surface 211 and/or the lower surface 212 (as shown in fig. 3C).

Referring to fig. 2A and 2B, the water-cooling tube 22 has a first end 221 and a second end 222, and a water-cooling tube channel 223, the first end 221 and the second end 222 in the present embodiment show a side (for example, they may be on the same side or on different sides) protruding from the plate body 21, but not limited thereto, and they may also be cut off the same side of the plate body 21. The water cooling tube passage 223 extends from the first end 221 to the second end 222, and has a tube inner wall 2231 with a plurality of protrusions 225 disposed at intervals extending from the first end 221 to the second end 222, and a working medium 30 (as shown in fig. 4B, 5B and 5D), such as water or cold coal or ethanol, enters from either end of the first end 221 and the second end 222, and then flows out from the other end through the water cooling tube passage 223.

With continued reference to the drawings, FIGS. 4A and 4B are schematic views illustrating the straight arrangement of the protrusions and channels in the water-cooling tube channel according to the present invention; FIGS. 5A and 5B are schematic views showing the arrangement of the protrusions and the grooves in the channel of the water-cooling pipe with a twist angle according to the present invention. As shown in fig. 4A and 4B, with reference to fig. 2A and 2B, the protrusions (e.g., ribs or fins) 225 protrude from the inner wall 2231 of the pipe toward a center X0 of the water-cooling pipe 223, and a channel 226 is formed between each two protrusions 225. Each projection 225 has a fixed end 2251 and a free end 2252, the fixed end 2251 being coupled to the inner conduit wall 2231, the free end 2252 projecting from the inner conduit wall 2231 toward the center X0 of the water-cooling conduit channel 223. The water cooling tube 22 and the convex body 225 can be formed integrally or non-integrally. If integrally formed, the water-cooled tube 22 can be drawn by a mold, and if not integrally formed, the water-cooled tube 22 and the boss 225 are joined together by a joining means (e.g., welding, bonding, or clamping). The bosses 225 and the channels 226 are horizontally disposed in the water-cooled tube passage 223, i.e., each boss 225 and channel 226 extends parallel to the second end 222 from the first end 221 of the water-cooled tube 22 without inclination or skewing.

Furthermore, as shown in fig. 5A and 5B, referring to fig. 2A and 2B, in another alternative implementation, the first end 221 and the second end 222 of the water-cooling pipe 22 may be twisted in different directions (i.e., clockwise direction and counterclockwise direction), or one of the first end 221 and the second end 222 is fixed, and the other end is twisted in a direction, so that the protrusions 225 and the channels 226 originally straight arranged in the water-cooling pipe channel 223 are arranged at a twist angle Φ. Thus, each of the projections 225 and the channels 226 extends from the first end 221 of the water-cooled tube 22 to the second end 222 with a twist slope. The twisted water cooled tubes 22 are then press fit into the channels 23 in a curved manner to match the shape of the channels 213.

Without limitation, in implementations where the first end 221 and the second end 222 of the water-cooled tube 22 are not twisted, the bosses 225 and the channels 226 can be integrally formed (e.g., die-drawn) or non-integrally formed (e.g., welded or bonded or snapped) within the water-cooled tube passage 223 along the twist angle Φ.

In the present embodiment, the protrusions 225 and the channels 226 are disposed at a twist angle Φ to change the laminar flow state of the fluid stratification in the prior art, so that the working medium 30 in the water-cooling tube channel 223 of the present embodiment is better mixed, and further becomes a turbulent flow (or called turbulent flow, turbulent flow or turbulent flow) state flow mixed with each other, thereby improving the heat exchange efficiency.

Furthermore, the protrusions 225 are protruded from the inner wall 2231 of the tube into the water-cooling tube channel 223, so that the channel 226 is formed between the protrusions 225, rather than the channel 226 is recessed into the inner wall 2231 of the tube, and thus the wall thickness of the water-cooling tube 22 is not thinned or easily broken, and the structural strength of the water-cooling tube 22 is maintained.

Please refer to fig. 4C, which is a schematic sectional view of a section of fig. 4A illustrating the flow of the working medium therein; fig. 5C and 5D are cross-sectional views of a cut-off section and a front view of the cut-off section of fig. 5A to show the flow state of the working medium therein. As shown, referring to fig. 2A and 2B together, the overall effect of convection is described as Q ═ hr gamma Δ t according to Newton's law of cooling.

Wherein Q is the heat exchange amount (or called heat transfer rate), h is the surface heat exchange coefficient (or called convection heat transfer coefficient), a is the heat exchange surface area (or called contact area), and Δ T is the fluid temperature difference (T-T').

Regarding the same external form specification (including the plate body size and the bent shape of the water cooling pipe) of the water cooling plate 20 and the flow rate of the working medium and the working medium, there are two ways to improve the heat exchange capability of the water cooling plate 20, one of which is to increase the heat exchange area a in the water cooling pipe 22 of the water cooling plate 20, and the other is to improve the surface heat exchange coefficient h of the water cooling plate 20.

As shown in fig. 4C, referring to fig. 2A and 2B and fig. 4A and 4B, it can be seen from the above-mentioned newton's law of cooling that the heat exchange amount is increased by increasing the heat exchange surface area a. Therefore, when the working medium 30 flows through the water-cooled tube 22, the contact area between the water-cooled tube passage 223 and the working medium 30 is increased by the convex-concave structure of the protrusions 225 and the grooves 226 horizontally arranged in the water-cooled tube passage 223. Thus, compared with the prior art in which the inner wall of the tube 121 of the copper tube 12 is not provided with a smooth surface with any features, the present invention increases the contact area between the inside of the water cooling tube channel 223 and the working medium 30 by the convex-concave structures of the protrusions 225 and the grooves 226, thereby increasing the heat exchange surface area a of the water cooling plate 20 and also increasing the heat exchange capacity of the water cooling plate 20.

As shown in fig. 5C and 5D, referring to fig. 2A and 2B and fig. 5A and 5B, it can be seen from the newton's law that the surface heat exchange coefficient h increases and the heat exchange amount increases. Therefore, when the working medium 30 flows through the water cooling tube 22, the working medium 30 near the inner wall 2231 of the pipe is disturbed by the twisted protrusions 225 and the grooves 226 during the flow process to flow in a spiral divergent Vortex (Vortex) along the twisting direction, and further develops into a mutually mixed turbulent flow (or turbulent flow). Compared with the laminar flow state in the prior art, the working medium 30 in the turbulent flow state can greatly increase the surface heat exchange coefficient h of the inner wall 2231 of the pipe in contact with the working medium, so as to increase the surface heat exchange coefficient h in the water cooling pipe channel 223. Furthermore, the convex-concave structure of the protrusions 225 and the grooves 226 can increase the contact area between the water cooling tube channel 223 and the working medium 30, thereby increasing the heat exchange surface area a of the water cooling plate 20. The heat exchange amount of the water cooling plate 20 is greatly increased under the condition that the surface heat exchange coefficient h and the heat exchange surface area A are both increased.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a pressure tube formula water-cooling plate structure which characterized in that contains:

a plate body provided with a channel;

2. The pressure tube type water-cooled plate structure of claim 1, wherein: the plurality of protrusions and the channel are horizontally disposed in the water-cooled tube channel.

3. The pressure tube type water-cooled plate structure of claim 1, wherein: the boss and the plurality of channels are disposed in the water-cooled tube passage at a twist angle.

4. The pressure tube type water-cooled plate structure of claim 1, wherein: the convex body protrudes from the inner wall of the pipeline to the center of the water-cooling pipeline passage and is provided with a fixed end and a free end, the fixed end is combined with the inner wall of the pipeline, and the free end protrudes towards the center of the pipeline.

5. The pressure tube type water-cooled plate structure of claim 1, wherein: the boss extends from the first end to the second end.

6. The pressure tube type water-cooled plate structure of claim 1, wherein: the plate body is provided with an upper surface and a lower surface, and the channel is positioned on the upper surface or the lower surface.

7. The pressure tube type water-cooled plate structure of claim 6, wherein: the channel is provided with a channel opening side, the water-cooling pipe is provided with an exposed surface, and the exposed surface of the water-cooling pipe is exposed from the channel opening side and is in the same plane with the upper surface or the lower surface of the plate body.

8. The pressure tube type water-cooled plate structure of claim 1, wherein: the plate body is provided with an upper surface and a lower surface, and the channel is positioned between the upper surface and the lower surface.