Heat exchanger radiator pipe and heat exchanger

Abstract

The present invention relates to the technical field of heat exchange devices, and specifically discloses a heat exchanger heat dissipation pipe and a heat exchanger. The heat exchanger heat dissipation pipe comprises: a pipe body and a pit portion arranged on the outer wall of the pipe body; the pit portion comprises at least one pit extending in a strip shape; the extension direction of the pit is arranged at an acute angle or an obtuse angle with the extension direction of the pipe body. If the extension direction of the pit is arranged at an acute angle or an obtuse angle with the extension direction of the pipe body, it is avoided that the pit is arranged perpendicular to the extension direction of the pipe body, which can reduce the flow resistance of the medium, thereby avoiding the high pressure loss causing the generation of bubbles to damage the pump, and avoiding the high pressure loss causing the system working pressure to increase and affecting the reliability of the system. Moreover, if the pit is arranged obliquely along the strip extension relative to the extension direction of the pipe body, it is easier to form a vortex, which is more conducive to the formation of turbulence of the medium in the pipe body, thereby improving the heat exchange performance.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange devices, a heat exchanger radiating pipe and a heat exchanger. Background Art

[0002] The heat exchanger cools the engine oil through cooling water. Its working principle is that the coolant flows through the water side channel of the cooler to cool the right side channel, and uses the heat exchange principle to cool the high-temperature engine oil in the core plate to reach the ideal temperature range. The heat exchanger includes a core, which includes a plurality of heat dissipation pipes that are superimposed and fixed on each other, and each heat dissipation pipe includes a plurality of pipes for medium circulation.

[0003] At present, in order to increase the heat dissipation, the cross-sectional area of ​​the pipeline is usually increased to increase the flow rate of the medium in the pipeline. However, there is a problem that when the medium is in a low flow rate state, laminar flow is easily generated, resulting in poor heat exchange performance.

[0004] In order to solve the above problems, some people in the prior art have adopted a method of setting a pit structure on the pipeline. The pit structure is set perpendicular to the extension direction of the pipeline body. The problem is that the flow resistance of the heat exchange medium in the pipe is relatively large. Summary of the invention

[0005] The object of the present invention is to provide a heat exchanger heat dissipation tube, a heat exchanger core and a heat exchanger, so as to solve the technical problem of large flow resistance of heat exchange medium in the tube in the prior art.

[0006] The present invention provides a device comprising: a pipe body and a concave portion arranged on the outer wall of the pipe body;

[0007] The pit portion includes a plurality of pits extending in strips; the extending direction of the pits is arranged at an acute angle or an obtuse angle with the extending direction of the pipe body;

[0008] The plurality of pits are arranged at intervals along a predetermined direction, and the predetermined direction intersects with an extension direction of the pipe body.

[0009] Further, at least one of the plurality of pits is a first pit, and at least another one is a second pit, and an angle β is formed between an extension direction of the first pit and an extension direction of the second pit.

[0010] Furthermore, the pipe body comprises an upper wall and a lower wall which are arranged opposite to each other, and the upper wall and the lower wall are both provided with a plurality of the recessed portions which are arranged at intervals along the extending direction of the pipe body.

[0011] Furthermore, further, the pipe body is arranged in a flat structure, and in the length direction and the width direction of the pipe body, one of any two adjacently arranged pits is arranged on the upper wall, and the other is arranged on the lower wall.

[0012] Furthermore, along the length direction of the pipe body and the width direction of the pipe body, the adjacent pits of the upper wall and the pits of the lower wall are both the first pits or the second pits.

[0013] Furthermore, the angle β ranges from 20° to 160°.

[0014] Furthermore, an extension direction of the first pit forms an angle γ with an extension direction of the pipe body, and the angle γ is in the range of 10°-50°.

[0015] Further, there are a plurality of the first pits and / or the second pits, and the first pits and the second pits are arranged alternately.

[0016] Furthermore, the distance between the center of the first pit and the center of the second pit is 1.5 mm to 6 mm.

[0017] Furthermore, there are a plurality of the concave portions, and the plurality of the concave portions are arranged in parallel and at intervals along the extending direction of the pipe body, and the interval distance between two adjacent concave portions is 1.5 mm-20 mm.

[0018] Furthermore, along the extension direction of the pipe body, the distance between the outermost recessed portion among the plurality of recessed portions and the end portion of the pipe body is in the range of 2.5 mm to 10 mm.

[0019] Furthermore, there are a plurality of the pits, and the plurality of the pits are arranged at intervals along a predetermined direction, and the predetermined direction forms an angle ɑ with the extension direction of the pipe body, and the range of the angle ɑ is 10°-50°.

[0020] Furthermore, the depth Hd of the pit ranges from 0.15 mm to 0.6 mm.

[0021] Furthermore, a protrusion and / or a groove is provided on the inner wall of the pit.

[0022] The present invention provides a heat exchanger, comprising the heat exchanger heat dissipation pipe.

[0023] The present invention provides a heat exchanger heat dissipation pipe, comprising: a pipe body and a pit portion arranged on the outer wall of the pipe body; the pit portion comprises a plurality of pits extending in strips; the extending direction of the pits is arranged at an acute angle or an obtuse angle with the extending direction of the pipe body; the plurality of pits are arranged in an interval arrangement along a predetermined direction, and the predetermined direction is arranged to intersect with the extending direction of the pipe body.

[0024] Among them, the extension direction of the pit is set at an acute angle or an obtuse angle with the extension direction of the pipeline body, and the pit is not set perpendicular to the extension direction of the pipeline body, which can reduce the flow resistance of the medium, thereby avoiding the high pressure loss causing bubbles to damage the pump, and avoiding the high pressure loss causing the system working pressure to increase and affecting the reliability of the system. In addition, the pit is set along the strip extension relative to the extension direction of the pipeline body, which makes it easier to form a vortex, which is more conducive to the formation of turbulence of the medium in the pipeline body, thereby improving the heat exchange performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 is a schematic structural diagram of a heat exchanger heat dissipation pipe according to a first embodiment of the present invention;

[0027] Figure 2 is a structural schematic diagram of a heat exchanger heat dissipation pipe according to a second embodiment of the present invention;

[0028] Figure 3 yes Figure 4 A top view of a heat exchanger heat dissipation tube is shown;

[0029] Figure 4 is a schematic structural diagram of a heat exchanger heat dissipation tube according to a third embodiment of the present invention;

[0030] Figure 5 yes Figure 4 A schematic diagram of the expansion of the heat exchanger heat dissipation pipe shown;

[0031] Figure 6 yes Figure 4 A cross-sectional view of a heat exchanger heat dissipation tube is shown;

[0032] Figure 7 is a graph showing the heat exchange performance and the hot side resistance of the heat exchanger heat dissipation pipe according to an embodiment of the present invention relative to the distance H1 between the concave portions;

[0033] Figure 8 is a graph showing the heat exchange performance and hot side resistance of a heat exchanger heat dissipation pipe according to an embodiment of the present invention relative to the distance H2 between the first pit and the second pit;

[0034] Fig. 9 is a graph showing the heat exchange performance and hot side resistance of the heat exchanger heat dissipation pipe according to an embodiment of the present invention relative to the angle γ between the first pit and the medium conveying direction;

[0035] Fig.10It is a structural schematic diagram of a heat dissipation pipe in the related art;

[0036] Fig.11 Is adopted Fig.10 The simulation result diagram of the heat exchanger with the heat pipe shown;

[0037] Fig.12 It is a simulation result diagram of the heat exchanger provided by the present invention.

[0038] In the figure: 10 - pipe body; 20 - pit portion; 11 - upper wall; 12 - lower wall; 21 - first pit; 22 - second pit; 1 - upper pit portion; 2 - lower pit portion; 3 - first pit row; 4 - second pit row. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] It should be noted that the terms "extension direction of the pipe body" and "length direction of the pipe body" in the present application are the same direction, that is, "extension direction of the pipe body" is the "length direction of the pipe body".

[0041] Embodiment 1:

[0042] like Figure 1 As shown, the heat exchanger heat dissipation tube provided in the first embodiment of the present invention includes a pipe body 10 and a pit portion 20 arranged on the outer wall of the pipe body 10; the pit portion 20 includes a plurality of pits extending in strips; the extension direction of the pits is set at an acute angle or an obtuse angle with the extension direction of the pipe body 10, and the plurality of pits are arranged at intervals along a predetermined direction, and the predetermined direction is intersected with the extension direction of the pipe body.

[0043] In this embodiment, in order to ensure a good turbulent effect, a plurality of concave portions 20 are generally provided on the outer wall of the pipe body 10, and the concave portions in the concave portions 20 extend to the inner wall of the pipe body 10, so that a bulge is formed on the inner wall of the pipe body 10. During the flow of the medium in the pipe body 10, the medium needs to flow around the bulge while ensuring the general conveying direction, so that the medium is easy to generate vortices, form turbulence, and avoid forming laminar flow, thereby improving the heat exchange performance. Moreover, the concave portions 20 can increase the contact area between the medium and the pipe body 10, further improving the heat exchange performance.

[0044] The extension direction of the pit is set at an acute angle or an obtuse angle with the extension direction of the pipeline body 10, and the pit is not set perpendicular to the extension direction of the pipeline body 10, so that the flow resistance of the medium can be reduced, thereby avoiding the high pressure loss causing bubbles to damage the pump, and avoiding the high pressure loss causing the system working pressure to increase and affecting the reliability of the system. Moreover, the pit is set along the strip extension relative to the extension direction of the pipeline body 10, which makes it easier to form a vortex, which is more conducive to the medium forming turbulence in the pipeline body 10, thereby improving the heat exchange performance.

[0045] It should be noted that the concave portion includes a plurality of concave pits, which means that the number of the concave pits is two, three or four, etc. However, due to the limitation of the overall length of the heat dissipation pipe, it is possible that the concave portion located at the end of the heat dissipation pipe includes one concave pit, while other concave pits cannot be provided due to lack of space.

[0046] The pit structure may be in various forms, such as waist-shaped, rectangular or strip-shaped (irregular shapes, such as curved or serrated edges of the pit), etc.

[0047] The depth Hd of the pit can be set according to specific needs. As an optional solution, the depth Hd of the pit is 0.15mm-0.6mm, such as 0.15mm, 0.20mm, 0.35mm, 0.4mm or 0.6mm. The depth Hd of the pit ranges from 0.15mm to 0.6mm, which can ensure good heat dissipation, while the surface medium circulation resistance is too large.

[0048] When the pit portion 20 includes a plurality of pits, the plurality of pits are arranged at intervals along a predetermined direction, the predetermined direction intersects with the extension direction of the pipe body 10 , and the predetermined direction may be perpendicular to the extension direction of the pipe body 10 .

[0049] As an optional solution, the predetermined direction forms an angle ɑ with the extension direction of the pipe body 10, and the angle ɑ is in the range of 10°-50°, such as 10°, 20.5°, 30.5°, 40° or 50°. Through simulation and experiment, it can be obtained that the predetermined direction, that is, the extension direction of the pit portion 20 and the extension direction of the pipe body 10, has an angle ɑ in the range of 10°-50°, which is more conducive to the formation of turbulence in the medium in the pipe body 10 and more conducive to improving the heat exchange performance.

[0050] like Figure 1 As shown, based on the above embodiment, further, a plurality of recessed portions 20 are arranged in parallel and at intervals along the extending direction of the pipe body 10, and the interval distance between two adjacent recessed portions 20 is 1.5 mm-20 mm.

[0051] In this embodiment, the plurality of dimples 20 are arranged in parallel and at intervals along the direction in which the pipe body 10 extends, so that the outermost dimples of the plurality of dimples are arranged flush, and the plurality of dimples 20 are arranged opposite to each other, which is more conducive to forming turbulence. The plurality of dimples 20 are evenly arranged, so that the flow of the medium is uniform, and the flow velocity at each position is uniform, thereby further making the heat exchange uniform.

[0052] The spacing distance between two adjacent concave portions 20 is 1.5 mm to 20 mm, such as 1.5 mm, 5.0 mm, 10.5 mm, 15 mm, 17.5 mm, or 20 mm. Figure 7 As shown, through simulation and experiment, it can be obtained that a distance of 1.5 mm to 20 mm between two adjacent dimples 20 is more conducive to the formation of turbulence of the medium in the pipe body 10 and is more conducive to improving the heat exchange performance.

[0053] Based on the above embodiment, further, along the extension direction of the pipe body, the distance between the outermost recessed portion among the plurality of recessed portions and the end of the pipe body is in the range of 2.5 mm to 10 mm, such as any value in the range of 2.5 mm, 5.5 mm, 8 mm or 10 mm.

[0054] On the basis of the above embodiment, further, the inner wall of the pit is provided with a protrusion, or the inner wall of the pit is provided with a groove, or the inner wall of the pit is provided with both a protrusion and a groove.

[0055] In this embodiment, a protrusion or a groove is provided on the inner wall of the pit, which can increase the flow area of ​​the medium in the pit, thereby further increasing the flow area of ​​the medium in the heat dissipation pipe, thereby improving the heat exchange performance; moreover, the protrusion or the groove provided in the pit can further disrupt the flow of the medium, which is conducive to the formation of turbulence, thereby further improving the heat exchange performance.

[0056] The protrusions may have various structural forms, such as circular protrusions, rectangular protrusions or triangular protrusions.

[0057] The groove may have various structural forms, such as a circular groove, a rectangular groove or a waist-shaped groove.

[0058] Embodiment 2:

[0059] like Figure 2 and Figure 3As shown, the heat exchanger heat dissipation pipe provided in the second embodiment of the present invention comprises a pipe body 10 and a concave portion 20 arranged on the outer wall of the pipe body 10; the concave portion 20 comprises a plurality of concave portions extending in strips; the extending direction of the concave portions is arranged at an acute angle or an obtuse angle with the extending direction of the pipe body 10. At least one of the plurality of concave portions is a first concave portion 21, and at least another one is a second concave portion 22, and an angle β is formed between the extending direction of the first concave portion 21 and the extending direction of the second concave portion 22.

[0060] In this embodiment, in order to ensure a good turbulent effect, a plurality of concave portions 20 are generally provided on the outer wall of the pipe body 10, and the concave portions in the concave portions 20 extend to the inner wall of the pipe body 10, so that a bulge is formed on the inner wall of the pipe body 10. During the flow of the medium in the pipe body 10, the medium needs to flow around the bulge while ensuring the general conveying direction, so that the medium is easy to generate vortices, form turbulence, avoid forming laminar flow, and thus improve the heat exchange performance. Moreover, the concave portions 20 can increase the contact area between the medium and the pipe body 10, further improving the heat exchange performance.

[0061] The extension direction of the pit is set at an acute angle or an obtuse angle with the extension direction of the pipeline body 10, and the pit is not set perpendicular to the extension direction of the pipeline body 10, so that the flow resistance of the medium can be reduced, thereby avoiding the high pressure loss causing bubbles to damage the pump, and avoiding the high pressure loss causing the system working pressure to increase and affecting the reliability of the system. Moreover, the pit is set along the strip extension relative to the extension direction of the pipeline body 10, which makes it easier to form a vortex, which is more conducive to the medium forming turbulence in the pipeline body 10, thereby improving the heat exchange performance.

[0062] Moreover, an angle β is formed between the extension direction of the first pit 21 and the extension direction of the second pit 22, that is, the extension direction of the first pit 21 and the extension direction of the second pit 22 are arranged to intersect. The two types of pits can make the flow direction of the medium more scattered, and can more smoothly realize the medium turbulence. Even when the flow rate of the heat exchange medium is unfavorable, turbulence can be generated earlier, so the heat exchange performance can be improved and the heat exchange performance can be optimized under all flow rate conditions.

[0063] Of course, the multiple pits may also include a third pit, a fourth pit or a fifth pit, etc., and the angles formed by the third pit, the fourth pit or the fifth pit and the extension direction of the pipe body 10 are different, and are also different from the angles formed by the first pit 21, the second pit 22 and the extension direction of the pipe body 10.

[0064] The depth Hd of the pit can be set according to specific needs. As an optional solution, the depth Hd of the pit is 0.15mm-0.6mm, such as 0.15mm, 0.20mm, 0.35mm, 0.4mm or 0.6mm. The depth Hd of the pit ranges from 0.15mm to 0.6mm, which can ensure good heat dissipation, while the surface medium circulation resistance is too large.

[0065] When the pit portion 20 includes a plurality of pits, the plurality of pits are arranged at intervals along a predetermined direction, the predetermined direction intersects with the extension direction of the pipe body 10 , and the predetermined direction may be perpendicular to the extension direction of the pipe body 10 .

[0066] As an optional solution, the predetermined direction forms an angle ɑ with the extension direction of the pipe body 10, and the angle ɑ is in the range of 10°-50°, such as 10°, 20.5°, 30.5°, 40° or 50°. Through simulation and experiment, it can be obtained that the predetermined direction, that is, the extension direction of the pit portion 20 and the extension direction of the pipe body 10, has an angle ɑ in the range of 10°-50°, which is more conducive to the formation of turbulence in the medium in the pipe body 10 and more conducive to improving the heat exchange performance.

[0067] On the basis of the above embodiment, further, a plurality of recessed portions 20 are arranged in parallel and at intervals along the extending direction of the pipe body 10, and the interval distance between two adjacent recessed portions 20 is 1.5 mm-20 mm.

[0068] In this embodiment, the plurality of dimples 20 are arranged in parallel and at intervals along the direction in which the pipe body 10 extends, so that the outermost dimples of the plurality of dimples are arranged flush, and the plurality of dimples 20 are arranged opposite to each other, which is more conducive to forming turbulence. The plurality of dimples 20 are evenly arranged, so that the flow of the medium is uniform, and the flow velocity at each position is uniform, thereby further making the heat exchange uniform.

[0069] The spacing distance between two adjacent concave portions 20 is 1.5 mm to 20 mm, such as 1.5 mm, 5.0 mm, 10.5 mm, 15 mm, 17.5 mm, or 20 mm. Figure 8 As shown, through simulation and experiment, it can be obtained that a distance of 1.5 mm to 20 mm between two adjacent dimples 20 is more conducive to the formation of turbulence of the medium in the pipe body 10 and is more conducive to improving the heat exchange performance.

[0070] It should be noted that, since the recessed portion 20 is arranged obliquely relative to the extension direction of the pipe body 10, only partial recesses can be arranged at both ends of the pipe body 10 due to limited space in the pipe body 10, which is still within the protection scope of the present invention.

[0071] The first pit 21 is arranged at an acute angle or an obtuse angle with the extension direction of the pipe body 10. Preferably, the angle γ between the extension direction of the first pit 21 and the extension direction of the pipe body 10 is in the range of 10°-50°, such as 10°, 20.5°, 30.5°, 40.5° or 50°. Figure 8 As shown, the angle between the first pit 21 and the extension direction of the pipe body 10 is in the range of 10°-50°, which can ensure that the heat dissipation pipe has a good heat dissipation capacity and avoid excessive resistance on the hot side of the heat dissipation pipe, thereby ensuring a good heat exchange effect.

[0072] The angle β between the extension direction of the first pit 21 and the extension direction of the second pit 22 is in the range of 20°-160°, such as 20°, 40°, 60°, 90°, 120°, 140° or 160°, and the angle β between the extension direction of the first pit 21 and the extension direction of the second pit 22 is in the range of 20°-90°, which can ensure that the heat pipe has a better heat dissipation, and at the same time avoid excessive resistance on the hot side of the heat pipe, thereby further ensuring a better heat exchange effect.

[0073] The distance H2 between the center of the first pit 21 and the center of the second pit 22 is 1.5 mm to 6 mm, such as 1.5 mm, 3.0 mm, 4.5 mm or 6 mm, or any value in the range. Fig. 9 As shown, the distance between the center of the first pit 21 and the center of the second pit 22 is 1.5 mm-6 mm, which can ensure that the heat dissipation of the heat pipe is good, while avoiding excessive resistance on the hot side of the heat pipe, thereby further ensuring a good heat exchange effect.

[0074] The distance from the edge of the pit portion 20 to the edge of the pipe body 10 is 2.5mm-10mm, such as any value in the range of 2.5mm, 3.5mm, 5mm, 6.5mm, 7mm, 9mm or 10mm. The reasonable structural design of the pit portion 20 is conducive to improving the heat exchange performance.

[0075] On the basis of the above embodiment, further, there are multiple first pits 21 and / or second pits 22, and the first pits 21 and the second pits 22 are arranged alternately.

[0076] In this embodiment, the first dimples 21 and the second dimples 22 are arranged alternately, that is, a first dimple 21 and a second dimple 22 are arranged adjacent to each other. The adjacent first dimples 21 and second dimples 22 can generally form a T-shaped structure. The dimple portion 20 of this structure can more smoothly realize medium turbulence, and can generate turbulence earlier even when the flow rate of the heat exchange medium is unfavorable, so that the heat exchange performance can be improved and optimized under all flow rate conditions.

[0077] There may be one first pit 21 and two second pits 22 , and one first pit 21 is set between the two pits; there may be two first pits 21 and one second pit 22 , and one second pit 22 is set between the two first pits 21 .

[0078] Optionally, the number of the first dimples 21 is multiple, such as two, three or four, etc., and the number of the second dimples 22 is multiple, such as two, three or four, etc. The dimple portion 20 includes multiple substantially T-shaped dimple pairs, which is more conducive to medium turbulence and improved heat exchange performance.

[0079] Based on the above embodiment, further, along the extension direction of the pipe body, the distance between the outermost recessed portion among the plurality of recessed portions and the end of the pipe body is in the range of 2.5 mm to 10 mm, such as any value in the range of 2.5 mm, 5.5 mm, 8 mm or 10 mm.

[0080] On the basis of the above embodiment, further, the inner wall of the pit is provided with a protrusion, or the inner wall of the pit is provided with a groove, or the inner wall of the pit is provided with both a protrusion and a groove.

[0081] In this embodiment, a protrusion or a groove is provided on the inner wall of the pit, which can increase the flow area of ​​the medium in the pit, thereby further increasing the flow area of ​​the medium in the heat dissipation pipe, thereby improving the heat exchange performance; moreover, the protrusion or the groove provided in the pit can further disrupt the flow of the medium, which is conducive to the formation of turbulence, thereby further improving the heat exchange performance.

[0082] The protrusions may have various structural forms, such as circular protrusions, rectangular protrusions or triangular protrusions.

[0083] The groove may have various structural forms, such as a circular groove, a rectangular groove or a waist-shaped groove.

[0084] Compared with the heat dissipation pipes in the related art, the heat exchanger heat dissipation pipe provided by the second embodiment of the present invention can have better heat exchange performance under the premise of the same hot side resistance; under the premise of the same heat exchange performance, the hot side resistance is small. The heat exchanger heat dissipation pipe provided by the second embodiment of the present invention has good comprehensive performance.

[0085] Embodiment three:

[0086] The main structure of the third embodiment is the same as that of the second embodiment, except that the third embodiment involves the specific structure of the pipe body 10 and the specific arrangement of the concave portion 20 on the pipe body 10. Specifically, Figures 4 to 6As shown, the concave portion 20 is arranged at an acute angle or an obtuse angle with the direction of medium transportation; the pipe body 10 includes an upper wall 11 and a lower wall 12 arranged opposite to each other, and the upper wall 11 and the lower wall 12 are both provided with a plurality of concave portions 20 arranged at intervals along the extension direction of the pipe body 10. In this embodiment, the concave portions are arranged on both the upper wall and the lower wall of the pipe body, which can make the medium flow more turbulent and improve the heat exchange performance.

[0087] Among them, the pit portion on the upper wall is the upper pit portion 1, and the pit portion on the lower wall is the lower pit portion 2. The upper pit portion 1 and the lower pit portion 2 can be completely opposite to each other or partially opposite to each other.

[0088] As an optional solution, the upper concave part 1 and the lower concave part are completely staggered, that is, a plurality of upper concave parts 1 and a plurality of lower concave parts 2 are staggered, there is one lower concave part 2 between two upper concave parts 1, and there is one upper concave part 1 between two lower concave parts 2. In this embodiment, the pipe body is arranged in a flat structure, and in the length direction and the width direction of the pipe body 10, one of any two adjacent concave parts is arranged on the upper wall, and the other is arranged on the lower wall.

[0089] In this embodiment, in other words, no matter along the length direction or the width direction of the pipe body, the adjacent pits of any pit are arranged on the wall opposite to the wall where the pit is located. This structure can prevent the cross section of the heat dissipation pipe where the pit is arranged from being too small for the medium to pass through, while the cross section of other parts is too large.

[0090] In this embodiment, the pit portion 20 on the upper wall 11 is an upper pit portion 1, and the pit portion 20 on the lower wall 12 is a lower pit portion 2. When the lower pit portion 2 is projected onto the upper wall 11, a lower pit portion 2 is arranged between the two upper pit portions 1, that is, a lower pit portion 2 is alternately arranged with an upper pit portion 1, and the upper pit portion 1 and the lower pit portion 2 do not overlap, so that the flow direction of the medium in the pipe body 10 can be made more chaotic, it is easier to cause vortices, and it is easier to form turbulence, thereby improving the heat exchange performance.

[0091] Optionally, the number of the upper recessed portions 1 is the same as the number of the lower recessed portions 2 .

[0092] like Figure 4 As shown, based on the above embodiment, further, along the length direction of the pipe body 10 and the width direction of the pipe body, the adjacent pits of the upper wall 11 and the pits of the lower wall 12 are both first pits or second pits.

[0093] In this way, the pits on the upper wall and the pits on the lower wall can form multiple rows (rows along the length direction of the pipe body) of pits, the pits include first pits and second pits, and the corresponding multiple rows of pits are divided into first pit rows 3 and second pit rows 4. Multiple first pit rows 3 and multiple second pit rows are arranged alternately, the first pit row includes the first pit 21 of the upper pit part 1 and the first pit 21 in the lower pit part 2, and the second pit row includes the second pit 22 in the upper pit part 1 and the second pit 22 in the lower pit part 2. The first pit in the upper pit part of the first pit row and the second pit in the lower pit part adjacent thereto in the second pit row are arranged to intersect and are generally arranged in a T shape; or the first pit in the lower pit part of the first pit row and the second pit in the upper pit part adjacent thereto in the second pit row are arranged to intersect and are generally arranged in a T shape. This pit structure is more conducive to the formation of turbulence and can form turbulence earlier.

[0094] It should be noted that the heat exchanger heat dissipation pipe in the first to third embodiments may include a plurality of medium circulation pipes, and the plurality of medium circulation pipes are sequentially arranged along a direction perpendicular to the medium conveying direction. The plurality of medium circulation pipes may be independently arranged and then connected to each other, or the heat dissipation pipe may be arranged as a whole, and a plurality of partitions may be arranged in the inner cavity of the heat dissipation pipe to divide the pipes into a plurality of pipes.

[0095] Embodiment 4:

[0096] Embodiment 4 of the present invention provides a heat exchanger, comprising the heat exchange heat dissipation pipes provided in embodiments 1 to 3. It also comprises a water inlet box and a water outlet box, the inlet box and the water outlet box are respectively connected to the two ends of the heat dissipation pipe, the heat exchange medium is introduced into the water inlet box and then distributed to a plurality of pipe bodies 10, and the medium is discharged from the water outlet box after flowing through the pipes.

[0097] The medium inside the heat exchanger provided by this embodiment can form turbulence and reduce the resistance on the hot side, thereby ensuring good heat exchange performance and avoiding excessive resistance on the hot side that affects system stability. Therefore, the heat exchanger provided by this embodiment has good heat exchange performance and good system stability.

[0098] like Fig.10 As shown in the figure, the heat dissipation pipe in the related art has its pits arranged horizontally and vertically. Fig.10 The heat exchanger of the heat pipe shown in the figure is simulated to obtain the following Fig.11 The simulation results are shown in the table below. Figure 4 The heat exchanger provided by the present invention of the heat pipe shown in the figure is simulated to obtain Fig.12 The simulation results table shown in the figure is as follows. It should be noted that the working condition refers to the flow rate of the medium. Fig.11 and Fig.12 The simulation is carried out under different medium flow conditions.

[0099] Depend on Fig.11 and Fig.12 It can be seen that under the same medium flow rate, the water side resistance of the heat exchanger provided by the present invention is smaller than the hot side resistance of the heat exchanger in the related art, and the total heat exchange capacity of the heat exchanger provided by the present invention is greater than the total heat exchange capacity of the heat exchanger in the related art.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0101] In addition, those skilled in the art will appreciate that, although some of the above-described embodiments include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the above claims, any one of the claimed embodiments may be used in any combination. In addition, the information disclosed in this background technology section is intended only to deepen the understanding of the overall background technology of the present application, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A heat exchanger radiating tube, characterized in that: include: A pipe body and a recessed portion disposed on an outer wall of the pipe body; The pit portion includes a plurality of pits extending in strips; the extending direction of the pits is arranged at an acute angle or an obtuse angle with the extending direction of the pipe body; The plurality of pits are arranged in an interval manner along a predetermined direction, and the predetermined direction intersects with the extension direction of the pipe body; At least one of the plurality of pits is a first pit, and at least another one is a second pit, and an angle β is formed between an extension direction of the first pit and an extension direction of the second pit; the pipe body comprises an upper wall and a lower wall arranged opposite to each other, and the upper wall and the lower wall are both provided with a plurality of pit portions arranged at intervals along the extension direction of the pipe body; the pipe body is arranged in a flat structure, and in the length direction and the width direction of the pipe body, one of any two adjacently arranged pits is arranged on the upper wall, and the other is arranged on the lower wall, the pit portion on the upper wall is an upper pit portion, and the pit portion on the lower wall is a lower pit portion, and the upper pit portion and the lower pit portion are arranged completely in a staggered manner; The pits on the upper wall and the pits on the lower wall can form multiple rows of the pits, and the corresponding multiple rows of the pits are divided into a first pit row and a second pit row, and multiple first pit rows and multiple second pit rows are alternately arranged with each other, the first pit row includes the first pits in the upper pit part and the first pits in the lower pit part, and the second pit row includes the second pits in the upper pit part and the second pits in the lower pit part.

2. The heat exchanger radiating tube according to claim 1, characterized in that: The angle β ranges from 20° to 160°.

3. The heat exchanger radiating tube according to claim 1, characterized in that: An extending direction of the first pit forms an angle γ with an extending direction of the pipe body, and the angle γ is in the range of 10°-50°.

4. The heat exchanger radiating tube according to any one of claims 1 to 3, characterized in that: There are a plurality of the first pits and / or the second pits, and the first pits and the second pits are arranged alternately.

5. The heat exchanger radiating tube according to any one of claims 1 to 3, characterized in that: The distance between the center of the first pit and the center of the second pit is 1.5 mm-6 mm.

6. The heat exchanger radiating tube according to any one of claims 1 to 3, characterized in that: There are a plurality of the concave portions, and the plurality of the concave portions are arranged in parallel and at intervals along the extending direction of the pipe body, and the interval distance between two adjacent concave portions is 1.5 mm-20 mm.

7. The heat exchanger radiating tube according to any one of claims 1 to 3, characterized in that: Along the extension direction of the pipe body, the distance between the outermost recessed portion among the plurality of recessed portions and the end portion of the pipe body is in the range of 2.5 mm to 10 mm.

8. The heat exchanger radiating tube according to claim 1, characterized in that: The predetermined direction forms an angle ɑ with the extension direction of the pipe body, and the range of the angle ɑ is 10°-50°.

9. The heat exchanger radiating tube according to claim 1, characterized in that: The depth Hd of the pit is in the range of 0.15mm-0.6mm.

10. The heat exchanger radiating tube according to any one of claims 1 to 3, characterized in that: The inner wall of the pit is provided with protrusions and / or grooves.

11. A heat exchanger, characterized in that: It comprises a heat exchanger heat dissipation tube as described in any one of claims 1 to 10.

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