Copper heat dissipation pipe with composite groove

Abstract

The utility model relates to heat dissipation copper pipe technical field especially, relates to a heat dissipation copper pipe with composite groove. Its technical scheme includes: copper pipe base pipe and composite groove structure, the copper pipe base pipe inner wall is equipped with the composite groove structure formed by two different tooth shape combinations along the axial direction, the composite groove structure includes the front section main tooth shape area and rear section auxiliary tooth shape area, the front section main tooth shape area is deep straight groove, the rear section auxiliary tooth shape area is shallow straight groove, the front section main tooth shape area with the rear section auxiliary tooth shape area is connected through transition cone surface. The utility model heat dissipation copper pipe sets up deep straight groove in evaporation section to increase capillary pumping force and storage capacity, strengthens phase change heat transfer, sets up shallow straight groove in condensation section to reduce flow resistance and even liquid film thickness, and is connected smoothly two section flow channel through transition cone surface, to be efficient evaporation and efficient condensation in the same pipe body in consideration of, realizes overall circulation resistance reduction and heat transfer performance promotion.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation copper pipe technology, and in particular to a heat dissipation copper pipe with composite grooves. Background Technology

[0002] Copper heat pipes, as high-efficiency heat transfer components, are widely used in heat pipes, phase change radiators, heat exchangers, and refrigeration systems. To improve capillary drive capability and heat transfer performance, existing technologies generally process grooves on the inner wall of the copper pipe to form a capillary structure and enhance fluid turbulence. Common groove forms include straight grooves, spiral grooves, and serrated grooves. These single tooth-shaped structures can improve heat transfer efficiency to a certain extent, but they still have the following shortcomings:

[0003] Single-tooth profiles are prone to insufficient capillary head under high heat loads, especially under vertical or inclined installation conditions, where the working fluid reflux capacity is limited and drying out is likely to occur. While deep-groove tooth profiles have higher capillary pressure, the fluid resistance is also correspondingly increased. Shallow-groove tooth profiles have lower resistance, but they are difficult to provide sufficient reflux driving force.

[0004] To address this issue, we propose a heat dissipation copper pipe with composite grooves. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a heat dissipation copper pipe with composite grooves.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation copper pipe with composite grooves, comprising a copper pipe base and a composite groove structure. The inner wall of the copper pipe base is provided with a composite groove structure formed by a combination of two different tooth shapes along the axial direction. The composite groove structure includes a front main tooth shape area and a rear auxiliary tooth shape area. The front main tooth shape area is a deep straight groove, and the rear auxiliary tooth shape area is a shallow straight groove. The front main tooth shape area and the rear auxiliary tooth shape area are connected by a transition conical surface.

[0007] Preferably, the groove cross-section of the front main tooth region and the rear auxiliary tooth region is trapezoidal, and the tooth root of the front main tooth region and the rear auxiliary tooth region are both provided with a rounded transition.

[0008] Preferably, the groove spacing of the front main tooth profile area and the rear auxiliary tooth profile area are different, the groove spacing of the front main tooth profile area is smaller than the groove spacing of the rear auxiliary tooth profile area, and the tooth depth of the front main tooth profile area is greater than the tooth depth of the rear auxiliary tooth profile area.

[0009] Preferably, the wall thickness of the copper tube base is greater in the front main tooth section than in the rear auxiliary tooth section.

[0010] Preferably, the length of the front main tooth profile area accounts for half of the total length of the composite groove structure, and the sum of the lengths of the rear auxiliary tooth profile area and the transition cone surface accounts for the other half of the total length of the composite groove structure.

[0011] Preferably, the outer surface of the copper tube base is provided with a layered protective structure, which includes an anti-corrosion layer, a thermally conductive enhancement layer and a wear-resistant protective layer arranged sequentially from the inside to the outside.

[0012] Preferably, the anti-corrosion layer is a nickel plating layer, the thermal conductivity enhancement layer is a high thermal conductivity graphite coating, and the wear-resistant protective layer is a polytetrafluoroethylene coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model features a heat dissipation copper tube with composite grooves. Along the axial direction, the inner wall is sequentially provided with a front main toothed area (deep straight groove) and a rear auxiliary toothed area (shallow straight groove). The front main toothed area employs a deep straight groove structure, resulting in a large cross-sectional area and strong capillary suction capacity. This allows for rapid recirculation of the working fluid in the main heat source area, providing significant capillary pressure. The deep groove has a large volume, storing more liquid working fluid and ensuring stable liquid supply to the evaporation section under high heat flux density conditions. Simultaneously, the deep straight groove has a large internal surface area, enhancing the phase change evaporation process and improving evaporative heat exchange efficiency.

[0015] The auxiliary toothed zone in the rear section adopts a shallow straight groove structure, which reduces the amount of liquid retained in this area and significantly reduces the flow resistance, which is conducive to the rapid return of the working fluid to the evaporation section. The shallow groove allows the liquid film thickness to be controlled and evenly distributed, reducing the liquid film heat transfer thermal resistance and improving the condensation heat exchange performance.

[0016] The front main tooth region and the rear auxiliary tooth region are connected by a transition cone surface, which effectively avoids the sudden change in cross-section caused by the abrupt change in tooth depth, reduces eddy currents and local resistance during liquid reflux, and improves the matching of the vapor-liquid two-phase flow channel, reducing two-phase flow disturbance loss.

[0017] By constructing functional zones with different tooth shapes on the inner wall of the same copper tube, the groove shapes of the evaporation section and the condensation section are optimized. The evaporation section achieves high liquid absorption and high heat transfer performance, while the condensation section achieves low-resistance reflux and efficient condensation of thin liquid film. The two sections are smoothly connected by a transition cone surface, thereby reducing circulation resistance and improving heat transfer capacity as a whole. This is especially suitable for heat dissipation devices that are installed vertically or at an angle. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 For the present utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0020] Figure 3 This is a schematic cross-sectional view of the composite trench structure of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the composite trench structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the layered outer protective structure of the copper tube base pipe of this utility model.

[0023] Figure label:

[0024] 1. Copper tube base; 101. Anti-corrosion layer; 102. Thermally conductive reinforcement layer; 103. Wear-resistant protective layer; 2. Composite groove structure; 201. Front main tooth profile area; 202. Transition cone surface; 203. Rear auxiliary tooth profile area. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figures 1-5 As shown, the present invention proposes a heat dissipation copper pipe with composite grooves, including a copper pipe base 1 and a composite groove structure 2. The inner wall of the copper pipe base 1 is provided with a composite groove structure 2 formed by a combination of two different tooth shapes along the axial direction. The composite groove structure 2 includes a front main tooth shape area 201 and a rear auxiliary tooth shape area 203. The front main tooth shape area 201 is a deep straight groove structure, and the rear auxiliary tooth shape area 203 is a shallow straight groove structure. The front main tooth shape area 201 and the rear auxiliary tooth shape area 203 are connected by a transition cone surface 202.

[0028] The groove cross-sections of the front main tooth region 201 and the rear auxiliary tooth region 203 are trapezoidal, and the tooth bottoms are provided with arc transitions to reduce flow resistance and improve fluid reflux characteristics. The groove spacing of the front main tooth region 201 is smaller than that of the rear auxiliary tooth region 203, and the tooth depth is greater than that of the rear auxiliary tooth region 203, thereby enhancing the capillary liquid absorption capacity and liquid storage capacity of the evaporation section.

[0029] The wall thickness of the copper tube base tube 1 in the front main toothed region 201 is greater than that in the rear auxiliary toothed region 203, so as to provide better structural strength and thermal conductivity in the high heat flux density region. The length of the front main toothed region 201 accounts for half of the total length of the composite groove structure 2, and the sum of the lengths of the rear auxiliary toothed region 203 and the transition cone surface 202 accounts for the other half of the total length of the composite groove structure 2, realizing the functional zoning of the evaporation section and the condensation section.

[0030] Example 2

[0031] like Figures 1-5 As shown, the heat dissipation copper pipe with composite grooves proposed in this utility model, compared with Embodiment 1, further includes: the outer surface of the copper pipe base 1 is provided with a layered protective structure, the layered protective structure includes an anti-corrosion layer 101, a thermally conductive enhancement layer 102 and a wear-resistant protective layer 103 arranged sequentially from the inside to the outside. The anti-corrosion layer 101 is a nickel plating layer, used to prevent corrosion of the copper pipe during long-term operation. The thermally conductive enhancement layer 102 is a high thermal conductivity graphite coating, used to improve the thermal conductivity of the pipe wall. The wear-resistant protective layer 103 is a polytetrafluoroethylene coating, used to prevent wear of the copper pipe during assembly and use.

[0032] During use, the front main toothed area 201 is located in the evaporation section. The deep straight groove structure provides a large groove cross-sectional area and volume, strong capillary suction capability, and can quickly return the liquid to the evaporation zone. At the same time, it stores more liquid working fluid, ensuring stable liquid supply under high heat flux density. In addition, its large internal surface area can enhance the phase change evaporation process and improve the evaporation heat exchange efficiency.

[0033] The auxiliary toothed section 203 is located in the condensation section. The shallow straight groove structure reduces liquid retention and flow resistance, which is conducive to rapid liquid reflux. The shallow groove can also control the liquid film thickness and make it uniformly distributed, reduce the liquid film heat transfer resistance, and improve condensation performance. The transition cone surface 202 connects the two toothed sections, effectively avoiding abrupt changes in the cross-section of the deep and shallow toothed sections, reducing eddies and local resistance in the reflux liquid, improving the matching of the vapor-liquid two-phase flow channels, and reducing two-phase flow disturbance losses.

[0034] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heat dissipation copper pipe with composite grooves, comprising a copper pipe base (1) and a composite groove structure (2), characterized in that: The inner wall of the copper tube base (1) is provided with a composite groove structure (2) formed by two different tooth shapes along the axial direction. The composite groove structure (2) includes a front main tooth shape area (201) and a rear auxiliary tooth shape area (203). The front main tooth shape area (201) is a deep straight groove, and the rear auxiliary tooth shape area (203) is a shallow straight groove. The front main tooth shape area (201) and the rear auxiliary tooth shape area (203) are connected by a transition cone surface (202).

2. The heat dissipation copper pipe with composite grooves according to claim 1, characterized in that: The groove cross-section of the front main tooth profile area (201) and the rear auxiliary tooth profile area (203) is trapezoidal, and the tooth root of the front main tooth profile area (201) and the rear auxiliary tooth profile area (203) are both provided with arc transition.

3. A heat dissipation copper pipe with composite grooves according to claim 1, characterized in that: The slot pitches of the front main tooth profile area (201) and the rear auxiliary tooth profile area (203) are different. The slot pitch of the front main tooth profile area (201) is smaller than that of the rear auxiliary tooth profile area (203), and the tooth depth of the front main tooth profile area (201) is greater than that of the rear auxiliary tooth profile area (203).

4. A heat dissipation copper pipe with composite grooves according to claim 1, characterized in that: The wall thickness of the copper tube base (1) in the front main toothed area (201) is greater than the wall thickness of the rear auxiliary toothed area (203).

5. A heat dissipation copper pipe with composite grooves according to claim 1, characterized in that: The length of the front main tooth region (201) accounts for half of the total length of the composite groove structure (2), and the sum of the lengths of the rear auxiliary tooth region (203) and the transition cone surface (202) accounts for the other half of the total length of the composite groove structure (2).

6. A heat dissipation copper pipe with composite grooves according to claim 1, characterized in that: The outer surface of the copper tube base tube (1) is provided with a layered protective structure, which includes an anti-corrosion layer (101), a thermally conductive enhancement layer (102), and a wear-resistant protective layer (103) arranged sequentially from the inside to the outside.

7. A heat dissipation copper pipe with composite grooves according to claim 6, characterized in that: The anti-corrosion layer (101) is a nickel plating layer, the thermal conductivity enhancement layer (102) is a high thermal conductivity graphite coating, and the wear-resistant protective layer (103) is a polytetrafluoroethylene coating.

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