Heat exchange tube and air conditioner

Abstract

The embodiment of the utility model provides a heat exchange tube and an air conditioner. The heat exchange tube comprises a tube body and a heat exchange tube, the protruding structure is arranged on the inner side face, facing the pipeline, of the pipe body in a protruding mode, the protruding structure comprises a protruding strip structure, the protruding strip structure comprises at least two protruding strips, the two protruding strips and the inner side face, facing the pipeline, of the pipe body jointly define a groove, and the groove extends in the axial direction of the pipe body. The protruding structures are suitable for playing a role in disturbing fluid flowing through the protruding structures so as to enhance the heat transfer performance of the heat exchange tube, the grooves are suitable for rectifying the fluid flowing through the grooves so that the fluid can flow in the axial direction of the tube body, and therefore the flowing resistance of the fluid is reduced. According to the heat exchange tube, the heat transfer performance of the heat exchange tube is improved, so that the heat exchange tube can be applied to scenes with higher heat exchange requirements.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a heat exchange tube and an air conditioner. Background Technology

[0002] In related technologies, heat exchangers are crucial components in air conditioning products, playing a key role in the heat transfer of hot and cold fluids. Currently, the heat exchanger tubes are primarily made of copper. However, due to the continuous rise and unstable trend of copper prices in recent years, the cost of heat exchangers fluctuates with copper prices and is not controlled by the domestic market. Therefore, research on alternative metal materials to copper has been ongoing in the heat exchanger field. Stainless steel has always been one of the potential alternatives to copper. However, due to its thermal conductivity of only about 16 W / (mK) (compared to copper's approximately 384 W / (mK)), significantly lower ductility than copper, and higher hardness leading to increased processing difficulty, the current application of stainless steel in heat exchanger tubes is mainly concentrated in special scenarios where heat exchange requirements are not high or corrosion resistance is required, such as power plant condensers and heat exchangers in the chemical industry. Utility Model Content

[0003] This utility model provides a heat exchange tube and an air conditioner to solve at least one of the above-mentioned technical problems.

[0004] This utility model provides a heat exchange tube for use in an air conditioner, the heat exchange tube comprising:

[0005] Pipe body, wherein a pipe is provided inside the pipe body;

[0006] A protruding structure is provided on the inner side of the tube body facing the pipe. The protruding structure includes a strip structure, with at least two strips. The two strips and the inner side of the tube body facing the pipe together form a groove. The groove extends along the axial direction of the tube body. The protruding structure is adapted to turbulent the fluid flowing through it to enhance the heat transfer performance of the heat exchange tube. The groove is adapted to rectify the fluid flowing through it, causing the fluid to flow along the axial direction of the tube body, thereby reducing the flow resistance of the fluid.

[0007] In the aforementioned heat exchange tube, a protruding structure is provided on the inner surface of the tube body facing the pipe. When fluid flows inside the pipe, the protruding structure can turbulently flow through it, increasing the heat transfer performance of the heat exchange tube and enabling its application in scenarios with higher heat exchange requirements. The grooves extend along the axial direction of the tube body. When fluid flows inside the pipe, the grooves can rectify the fluid flow, ensuring it flows along the axial direction of the tube body, thereby reducing flow resistance and helping to lower the cost of the air conditioner.

[0008] In some embodiments, the protrusions extend along the axial direction of the tube body.

[0009] In some embodiments, the protrusion structure includes three or more protrusions, with the middle protrusion being the longest and the protrusions on both sides decreasing in length sequentially.

[0010] In some embodiments, the protrusion structure includes three protrusions, namely a first protrusion, a second protrusion, and a third protrusion, wherein the second protrusion is located between the first protrusion and the third protrusion, and the length of the second protrusion is greater than the length of the first protrusion and the length of the third protrusion, wherein the length of the first protrusion is equal to the length of the third protrusion.

[0011] In some embodiments, the first protrusion and the third protrusion are symmetrically arranged on both sides of the second protrusion.

[0012] In some embodiments, the protrusion structure includes a plurality of protrusion strip structures, and the plurality of protrusion strip structures are arranged in an ordered or disordered manner.

[0013] In some embodiments, the protrusions include protruding teeth that mimic shark skin teeth.

[0014] In some embodiments, the protrusion structure includes streamlined protrusion teeth, which are spaced apart from or connected to the protrusion structure.

[0015] In some embodiments, the streamlined protruding teeth are provided on the outer sides of both ends of the protrusion.

[0016] In some embodiments, the streamlined protruding teeth form an accommodating space, and the protruding strip structure is disposed in the accommodating space.

[0017] In some embodiments, the tube body and the protruding structure are integrally formed.

[0018] In some embodiments, the heat exchange tube is a welded stainless steel coil tube.

[0019] An air conditioner according to an embodiment of the present invention includes the heat exchange tube of any of the above embodiments.

[0020] In the aforementioned air conditioner, a protruding structure is provided on the inner surface of the pipe body facing the pipe. When fluid flows inside the pipe, the protruding structure can turbulently flow through it. This turbulence can increase the heat transfer performance of the heat exchange tube, allowing it to be used in scenarios with higher heat exchange requirements. The grooves extend along the axial direction of the pipe body. When fluid flows inside the pipe, the grooves can rectify the fluid flow, ensuring it flows along the axial direction of the pipe body, thereby reducing flow resistance and helping to lower the cost of the air conditioner.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the heat exchange tube (when unfolded and laid flat) according to an embodiment of this utility model;

[0024] Figure 2 This is a top view of the heat exchange tube (when unfolded and laid flat) according to an embodiment of this utility model;

[0025] Figure 3 This is a structural diagram of the protrusion structure according to an embodiment of the present invention;

[0026] Figure 4 This is a top view of the protruding strip structure according to an embodiment of the present utility model;

[0027] Figure 5 This is a partial cross-sectional view of the heat exchange tube according to an embodiment of the present invention;

[0028] Figure 6 This is another structural schematic diagram of the heat exchange tube (when unfolded and laid flat) according to an embodiment of this utility model;

[0029] Figure 7 This is another top view of the heat exchange tube (when unfolded and laid flat) according to an embodiment of this utility model;

[0030] Figure 8 This is another structural schematic diagram of the heat exchange tube (when unfolded and laid flat) according to an embodiment of this utility model;

[0031] Figure 9 This is another top view of the heat exchange tube (when unfolded and laid flat) according to an embodiment of this utility model;

[0032] Figures 10 to 16 This is a schematic diagram of the manufacturing process of the heat exchange tube according to an embodiment of the present invention.

[0033] Explanation of key component reference numerals:

[0034] Heat exchange tube 100, tube body 12, protruding structure 14, pipe 16, protruding strip structure 18, protruding strip 20, groove 22, first protruding strip 24, second protruding strip 26, third protruding strip 28, streamlined protruding tooth 30, first end 32, connecting part 34, second end 36, accommodating space 38, stainless steel plate 200. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] This disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] Please see Figures 1 to 4 as well as Figure 16 This utility model provides a heat exchange tube 100 for use in an air conditioner. The heat exchange tube 100 includes a tube body 12 and a protruding structure 14. A pipe 16 is provided inside the tube body 12. The protruding structure 14 protrudes from the inner side of the tube body 12 facing the pipe 16. The protruding structure 14 includes a protruding strip structure 18, which includes at least two protruding strips 20. The two protruding strips 20 and the inner side of the tube body 12 facing the pipe 16 together form a groove 22. The groove 22 extends along the axial direction P of the tube body 12. The protruding structure 14 is adapted to turbulent the fluid flowing through the protruding structure 14 to enhance the heat transfer performance of the heat exchange tube 100. The groove 22 is adapted to rectify the fluid flowing through the groove 22 so that the fluid flows along the axial direction P of the tube body 12, thereby reducing the flow resistance of the fluid.

[0041] In the aforementioned heat exchange tube 100, a protruding structure 14 is provided on the inner side of the tube body 12 facing the pipe 16. When fluid flows inside the pipe 16, the protruding structure 14 can turbulentize the fluid flowing through it. Under this turbulence, the heat transfer performance of the heat exchange tube 100 can be increased, thus enabling the heat exchange tube 100 to be applied in scenarios with higher heat exchange requirements. The groove 22 extends along the axial direction of the tube body 12. When fluid flows inside the pipe 16, the groove 22 can rectify the fluid, causing it to flow along the axial direction P of the tube body 12, thereby reducing the flow resistance and helping to reduce the cost of the air conditioner.

[0042] Specifically, the heat exchange tube 100 is a tube that can exchange heat with air or other components of an air conditioner (such as fins or heat exchange plates). The fluid flowing inside the heat exchange tube 100 includes, but is not limited to, coolant, refrigerant, and gas. The coolant includes, but is not limited to, water, ethylene glycol, and mixtures thereof (such as ethylene glycol-water mixtures).

[0043] The heat exchange tube 100 may be made of materials including, but not limited to, copper and stainless steel. When the heat exchange tube 100 is made of copper, the protruding structure 14 can further improve its heat exchange performance. When the heat exchange tube 100 is made of stainless steel, the protruding structure 14 can enhance its heat transfer performance, allowing stainless steel to be used in applications with high heat exchange requirements instead of copper.

[0044] Turbulence refers to the physical phenomenon of intentionally disrupting the smooth flow of a fluid through structural or design means to alter flow field characteristics, enhance energy exchange, or improve specific functions (such as heat dissipation, mixing, drag reduction, or drag increase). Turbulence typically achieves its goals by introducing turbulence, vortices, or flow separation. When fluid flows through pipe 16, the protruding structures 14 (including the protruding strip structures 18) disrupt the smooth flow of the fluid during its flow, thereby altering the flow field characteristics and enhancing the heat transfer performance of heat exchange tube 100.

[0045] The flow state of the fluid can be altered by adjusting the shape, size, and surface characteristics of the protruding structure 14, thereby creating a turbulent effect on the fluid. The shape, size, and surface characteristics of the protruding structure 14 can be set according to the design, and this utility model does not impose specific limitations.

[0046] In turbulent flow, a complex and chaotic region exists outside the laminar boundary. This region contains flow vortices with uncertain directions. Besides vortices migrating along the flow direction, there are also transverse vortices migrating perpendicular to the flow direction. The migration of these transverse vortices introduces significant flow resistance. The grooves 22 and protrusions can reduce the migration of transverse vortices, thereby reducing flow resistance. In laminar flow, due to the influence of gravity or other volume forces, the fluid is inevitably affected by volume forces to some extent when flowing along the flow direction. This causes the fluid to tend to flow in the direction of the volume forces, resulting in a longer fluid flow path and additional flow resistance. The grooves 22 extending along the axial direction P of the pipe 12 can prevent the fluid from flowing in other directions, ensuring that the fluid flows as far along the flow direction as possible, thereby reducing flow resistance. The flow direction of the fluid within the pipe 12 can be along the axial direction P of the pipe 12.

[0047] The protruding structure 14 includes one or more protruding strip structures 18, and each protruding strip structure 18 may include at least two protrusions 20. The protrusions 20 are structures that protrude from the inner surface of the pipe body 12 facing the pipe 16. All protrusions 20 may have equal or unequal heights, or some protrusions 20 may have equal or unequal heights. This invention does not specifically limit the height of the protrusions 20.

[0048] Optionally, the two ends of the protrusion 20 are sharp, and the top of the protrusion 20 can be arc-shaped or sharp. When the fluid flows towards the protrusion 20, the sharp front end of the protrusion 20 can turbulently flow the fluid, enhancing the heat transfer performance of the heat exchange tube 100. The fluid can flow along the extension direction of the protrusion 20, and converge at the sharp rear end of the protrusion 20. Due to the inertia of the flow, the flowing fluid forms a vortex at this point, enhancing the turbulence, and the fluid flows again to the next protrusion 20.

[0049] Optionally, in one embodiment, the protrusion structure 18 includes two protrusions 20, the heights of which may be equal or unequal. A groove 22 is formed between the two protrusions 20 and the inner surface of the tube body 12 between them. Optionally, in one embodiment, the protrusion structure 18 includes three protrusions 20, with a groove 22 formed between adjacent protrusions 20 and the inner surface of the tube body 12, and two grooves 22 formed by the three protrusions 20 and the inner surface of the tube body 12.

[0050] All protrusions 20 may have the same structure or different structures, or some protrusions 20 may have the same structure while others have different structures. The protrusions 20 are elongated, and their cross-sections perpendicular to their length include, but are not limited to, regular or irregular shapes such as squares, triangles, trapezoids, and other polygons. Optionally, please refer to... Figures 1 to 4 The protrusion 20 is a straight strip. Optionally, the protrusion 20 can be any curved protrusion 20. The length of each protrusion 20 can be equal or unequal, or several protrusions 20 can have equal lengths or several protrusions 20 can have unequal lengths.

[0051] The groove 22 formed by the protrusion 20 and the inner side of the pipe body 12 facing the pipe 16 extends along the axial direction P of the pipe body 12, so that the fluid flowing into the groove 22 is rectified by the groove 22 and also flows along the axial direction P of the pipe body 12, thereby reducing flow resistance. When the fluid flows in the pipe 16, a power device (such as a pump) is required to provide the flow power for the fluid. If the flow resistance of the fluid in the pipe 16 is large, a larger power device is required to make the fluid flow in the pipe 16 at the desired flow rate. In this embodiment, the groove 22 extends along the axial direction P of the pipe body 12, so that the fluid flowing into the groove 22 also flows along the axial direction P of the pipe body 12. While achieving enhanced heat transfer performance of the heat exchange tube 100, the flow resistance of the fluid can be reduced. Therefore, the desired flow rate can be obtained by using a smaller power device to provide power for the fluid, which is beneficial to reducing the cost of the air conditioner.

[0052] In addition, the protruding structure 14 on the inner side of the tube body 12 facing the pipe 16 can also increase the unit surface area inside the heat exchange tube 100, thereby improving the heat transfer performance of the heat exchange tube 100.

[0053] To facilitate the illustration of protrusion structure 14, Figures 1 to 2 as well as Figures 6 to 9 The heat exchange tube 100 in the picture is in its unfolded and laid-out state.

[0054] In some implementations, please refer to Figure 2 and Figure 16 The protrusion 20 extends along the axial direction P of the pipe body 12.

[0055] Thus, the entire groove 22 formed can extend in the axial direction P of the tube body 12.

[0056] Specifically, the protrusions 20 are straight strips extending along the axial direction P of the pipe body 12. This causes the entire groove 22, formed by the two protrusions 20 and the inner side of the pipe body 12 facing the pipe 16, to also extend along the axial direction P of the pipe body 12. The groove 22 is straight and relatively regular in shape. When fluid flows into the groove 22, the fluid at all points within the groove 22 can be rectified to flow along the axial direction P of the pipe body 12, thereby further reducing the flow resistance. Figure 2 In the middle, the axial direction P of the tube body is along the vertical direction.

[0057] In some implementations, please refer to Figures 1 to 4 The protrusion structure 18 includes three or more protrusions 20, with the middle protrusion 20 being the longest and the protrusions 20 on both sides decreasing in length.

[0058] Therefore, by mimicking the pattern of shark skin and teeth, we can further reduce the flow resistance of fluids.

[0059] Specifically, the dermal teeth of a shark swimming rapidly in water are shaped like grooves 22 arranged in an orderly manner along the direction of water flow. Shark dermal teeth are numerous tiny structures on the shark's skin, also known as cutaneous teeth or shield scales. These teeth are arranged along the direction of water flow on the shark's skin. The dermal teeth help reduce water resistance.

[0060] In this embodiment, among the protrusions 20 that form the groove 22, the protrusion 20 in the middle is the longest, and the protrusions 20 on both sides become shorter in sequence. This allows the protrusion structure 18 to form the groove 22 in accordance with the pattern of shark teeth, which can further reduce the flow resistance of the fluid and reduce the cost of the air conditioner.

[0061] In one embodiment, when the number of protrusions 20 in a protrusion structure 18 is an odd number greater than 1, the protrusion 20 in the middle is the longest, and the protrusions 20 on both sides become shorter in sequence. When the number of protrusions 20 in a protrusion structure 18 is an even number greater than 2, the two protrusions 20 in the middle are the longest, and the protrusions 20 on both sides become shorter in sequence.

[0062] In some implementations, please refer to Figures 1 to 4 The protrusion structure 18 includes three protrusions 20, which include a first protrusion 24, a second protrusion 26 and a third protrusion 28. The second protrusion 26 is located between the first protrusion 24 and the third protrusion 28. The length of the second protrusion 26 is greater than the length of the first protrusion 24 and the length of the third protrusion 28. The length of the first protrusion 24 is equal to the length of the third protrusion 28.

[0063] Therefore, a groove 22 can be formed on both sides of the second protrusion 26 in the middle, so that the fluid can flow on both sides of the second protrusion 26, thereby avoiding mutual interference of fluids to a certain extent and further reducing flow resistance.

[0064] Specifically, the second protrusion 26 in the middle is the longest, while the first protrusion 24 and the third protrusion 28 on both sides are shorter. When fluid flows into the groove 22 between the first protrusion 24 and the second protrusion 26, and into the groove 22 between the third protrusion 28 and the second protrusion 26, the fluid flowing on both sides of the second protrusion 26, because the second protrusion 26 is the longest, avoids mutual interference between the fluids flowing on both sides of the second protrusion 26 to a certain extent. This allows the fluid to flow better along the groove 22 in its respective groove, thereby further reducing flow resistance.

[0065] exist Figure 4 In the figure, the length of the first protrusion 24 is equal to the length of the third protrusion 28, both being S2, and the length of the second protrusion 26 is S1, thus satisfying s1>s2. The distance between the first protrusion 24 and the second protrusion 26 and the distance between the second protrusion 26 and the third protrusion 28 are equal, both being d, thus satisfying d>0mm.

[0066] In some implementations, please refer to Figure 3 and Figure 4 The first protrusion 24 and the third protrusion 28 are symmetrically arranged on both sides of the second protrusion 26.

[0067] This allows for the formation of a more regular ribbed structure 18.

[0068] Specifically, among the three protrusions 20, the second protrusion 26 is the longest, while the first protrusion 24 and the third protrusion 28 on both sides are shorter. The first protrusion 24 and the third protrusion 28 are symmetrically arranged on both sides of the second protrusion 26, so that the two grooves 22 formed by the protrusion structure 18 are symmetrically arranged on both sides of the second protrusion 26, forming a more regular protrusion structure 18, which is more in line with the characteristic structure of shark skin teeth, and further reduces the flow resistance of fluid.

[0069] In some implementations, please refer to Figure 1 and Figure 2 as well as Figures 6 to 9 The protruding structure 14 includes multiple protruding strip structures 18, and the multiple protruding strip structures 18 can be arranged in an orderly or disordered manner.

[0070] Therefore, the arrangement of the protruding strip structure 18 is flexible and can reduce costs.

[0071] Specifically, the arrangement of the protruding strip structure 18 can be selected according to actual needs.

[0072] In one embodiment, the protruding strip structures 18 are arranged in an ordered manner, or alternatively, in a uniform manner. Specifically, each protruding strip structure 18 has a minimum circumscribed square, and the distance between the corresponding squares of two adjacent protruding strip structures 18 is equal. The protruding strip structures 18 can be arranged closely together.

[0073] In one implementation, please refer to Figure 1 and Figure 2 as well as Figures 6 to 9 , Figure 1 and Figure 2 as well as Figures 6 to 9The diagram illustrates an ordered arrangement of multiple protruding structures 18. Specifically, the multiple protruding structures 18 can be arranged in rows and columns. In a row, the first distance (greater than zero) between the squares corresponding to two adjacent protruding structures 18 is equal. In the same column, the second distance (greater than zero) between the squares corresponding to two adjacent protruding structures 18 is equal. The first distance and the second distance are equal. In three adjacent rows, the protruding structure 14 in the middle row is located between two adjacent protruding structures 18 in the two adjacent rows on the side in the column direction, or in three adjacent rows, the protruding structures 14 in the two adjacent rows on the side are located between two adjacent protruding structures 18 in the middle row in the column direction, thereby constructing a staggered arrangement of grooves 22. It is understood that in other embodiments, the first distance and the second distance can be equal to zero, that is, in the same row, two adjacent protruding structures 18 are in contact and connected, and in the same column, two adjacent protruding structures 18 are in contact and connected.

[0074] In one embodiment, the arrangement of the multiple protruding structures 18 is a disordered arrangement, which can be understood as an irregular arrangement. Optionally, the arrangement of the multiple protruding structures 18 can be formed by random arrangement.

[0075] In some implementations, please refer to Figure 5 The height of the protrusion 20 is greater than 0.01 mm.

[0076] Therefore, the protruding strip structure 18 can meet the application needs of multiple scenarios.

[0077] Specifically, the protruding structure 18 protrudes from the inner surface of the pipe body 12 facing the pipe 16. The protruding structure 18 includes a protrusion 20, the height h of which satisfies h > 0.01 mm, ensuring that the height of the protrusion 20 is not too small, thus preventing poor fluid rectification. In some examples, h = 0.015 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.1 mm, or other values ​​greater than 0.01 mm. The upper limit of h can be determined based on factors such as the cost of the pipe body 12, the internal space of the pipe 16, the manufacturing process, and the rectification effect.

[0078] In some implementations, please refer to Figure 3 and Figure 4 The ridge 20 includes protruding teeth that mimic the teeth of a shark.

[0079] This can further reduce the flow resistance of the fluid.

[0080] Specifically, protruding teeth resembling shark teeth can be used to form a rib structure 18, thereby ensuring that the fluid flows as far along as possible in the axial direction P of the pipe body 12. The shape of the shark teeth is that of grooves 22 arranged in an orderly manner along the flow direction. In this embodiment, multiple rib structures 18 can be as follows: Figure 2 The arrangement shown is ordered to form ordered grooves 22 and protrusions 18 that mimic the skin teeth of sharks, which can further reduce the flow resistance of fluids.

[0081] In some implementations, please refer to Figures 6 to 9 The protruding structure 14 includes streamlined protruding teeth 30, which are spaced apart from or connected to the protruding strip structure 18.

[0082] Therefore, the turbulence effect of the protruding structure 14 can be enhanced to a certain extent, further improving the heat transfer performance.

[0083] Optionally, in one embodiment, the streamlined protruding tooth 30 may include a first end 32, a connecting portion 34, and a second end 36. The first end 32 is connected to the second end 36 through the connecting portion 34. Both the first end 32 and the second end 36 may be sharp protruding ends, and the connecting portion 34 is streamlined.

[0084] Specifically, the protruding structure 14 can turbulentize the fluid flowing through it, thereby enhancing the heat transfer performance of the heat exchange tube 100. The streamlined protruding tooth 30 can be a tooth profile design used in fluid machinery, aiming to optimize fluid dynamics performance and reduce drag. In one embodiment, the streamlined protruding tooth 30 may include a tooth tip, a tooth surface, and a tooth root, with the transitions between the tooth tip, tooth surface, and tooth root employing continuous curves (such as parabolas, hyperbolas, or splines) to avoid sharp edges and reduce fluid separation and turbulence. The tooth tip may be sharpened or rounded, and the tooth root may be designed with a rounded transition to reduce fluid impact and cavitation.

[0085] Optionally, please combine Figure 6 and Figure 7 In one embodiment, the first end 32 is the end facing the flow of fluid into the streamlined protrusion 30 (i.e., the front end), and the second end 36 is the end facing the flow of fluid out of the streamlined protrusion 30 (i.e., the rear end).

[0086] The first end 32 is a sharp protrusion. The fluid first flows over this sharp protrusion, which acts as a turbulence and enhances the heat transfer of the heat exchange tube 100. The connecting part 34 is a streamlined protrusion tooth, which enhances heat transfer while reducing flow resistance. The second end 36 converges to a point with the streamline of the connecting part 34. Due to the inertia of the flow, the flowing fluid forms a vortex at this point, which enhances the turbulence. The fluid then flows to the next protruding strip structure 18 or streamlined protrusion tooth 30.

[0087] In one embodiment, the streamlined protruding teeth 30 are spaced apart from the protruding strip structure 18. In another embodiment, the streamlined protruding teeth 30 are connected to the protruding strip structure 18.

[0088] Alternatively, in one embodiment, the streamlined protrusions 30 can be made into fish-scale-like streamlined protrusions 30.

[0089] Furthermore, when fluid flows within pipe 16, a power source (such as a pump) is required to provide the flow power. If the flow resistance of the fluid within pipe 16 is high, a higher power source is needed to make the fluid flow at the desired velocity within pipe 16. In this embodiment, the protruding structure 14 includes streamlined protruding teeth 30, which can reduce the flow resistance of the fluid while enhancing the heat transfer performance of the heat exchange tube 100. Therefore, the desired flow velocity can be obtained by using a lower power source, which helps to reduce the cost of the air conditioner.

[0090] In some implementations, please refer to Figure 6 and Figure 7 Both ends of the protrusion 20 are provided with streamlined protruding teeth 30.

[0091] This allows fluid to flow rapidly from the groove 22 to the streamlined protruding teeth 30 and from the streamlined protruding teeth 30 into the groove 22, which is beneficial for improving heat transfer efficiency and enhancing turbulence.

[0092] Specifically, please combine Figure 6 and Figure 7 The protrusions 20 include protruding teeth resembling shark skin teeth. A groove 22 is formed between adjacent protrusions 20 and the inner side of the pipe body 12 facing the pipe 16. Streamlined protruding teeth 30 are provided on the outer sides of both ends of the protrusions 20. Figure 6 and Figure 7 In the middle, streamlined protruding teeth 30 are provided on the outer sides of both the upper and lower ends of the protruding strip 20. The streamlined protruding teeth 30 can be connected to the upper and lower ends of the protruding strip 20, or are arranged at intervals.

[0093] In one implementation, when fluid from Figure 7 When the fluid flows downwards, it can flow along the streamlined protrusions 30 at the upper end of the protrusions 20. The streamlined protrusions 30 turbulent the fluid and enhance the heat transfer performance of the heat exchange tube 100. The fluid flowing out of the streamlined protrusions 30 can flow into the groove 22 along the upper end of the protrusions 20. The groove 22 can rectify the fluid and reduce flow resistance.

[0094] The fluid flowing out of the groove 22 can flow to the streamlined protrusion 30 at the lower end of the protrusion 20. The streamlined protrusion 30 plays a turbulent role in the fluid and enhances the heat transfer performance of the heat exchange tube 100.

[0095] In some implementations, please refer to Figure 8 and Figure 9 The streamlined protruding teeth 30 form an accommodating space 38, and the protruding strip structure 18 is disposed in the accommodating space 38.

[0096] This improves the space utilization of heat exchange tube 100.

[0097] Specifically, the streamlined protruding teeth 30 can form an accommodating space 38, and the protruding strip structure 18 is disposed in the accommodating space 38, so that while enhancing the turbulence effect and improving the heat transfer performance, the protruding structure 14 is set more compactly, which can improve the space utilization of the heat exchange tube 100.

[0098] exist Figure 8 and Figure 9 In the tube body 12, streamlined protruding teeth 30 enclose multiple accommodating spaces 38, which are arranged in rows and columns. Each protruding structure 18 is located in a corresponding accommodating space 38. When fluid flows along the streamlined protruding teeth 30, the streamlined protruding teeth 30 turbulently affect the fluid flow, enhancing heat transfer. A portion of the fluid flows into the accommodating space 38 and then into the groove 22. The groove 22 straightens the fluid, causing it to flow along the axial direction P of the tube body 12 to reduce flow resistance. The fluid flowing out of the groove 22 can flow out of the streamlined protruding teeth 30, cross the streamlined protruding teeth 30, and flow out of the accommodating space 38, flowing into the next streamlined protruding tooth 30.

[0099] It is understandable that the streamlined protruding teeth 30 and the protruding strip structure 18 can be combined and arranged in an orderly or disordered manner to construct a new tooth shape.

[0100] In some implementations, please refer to Figure 1 and Figure 2 as well as Figures 6 to 9 The tube body 12 and the protruding structure 14 are integrally formed.

[0101] This is beneficial to improving the structural strength and manufacturing efficiency of the heat exchange tube 100.

[0102] Specifically, the tube body 12 and the protruding structure 14 are integrally formed, and the tube body 12 and the protruding structure 14 are tightly connected, avoiding gaps, voids, or other disconnections that may occur when the tube body 12 and the protruding structure 14 are connected, thereby improving the structural strength of the heat exchange tube 100. During manufacturing, the heat exchange tube 100 with the tube body 12 and the protruding structure 14 can be manufactured integrally, thus saving the step of reconnecting the tube body 12 and the protruding structure 14 and improving the manufacturing efficiency of the heat exchange tube 100 to a certain extent.

[0103] In some implementations, please refer to Figures 10 to 16 The heat exchange tube 100 is a welded stainless steel coil tube.

[0104] Therefore, stainless steel can be used to manufacture heat exchange tube 100.

[0105] Specifically, the heat exchange tube 100 is a welded stainless steel coiled tube. The material of the heat exchange tube 100 is stainless steel. The "welded" refers to the weld seam. When the stainless steel sheet 200 is rolled up, a weld seam is formed between the two rolled edges. Welding equipment is used to weld the stainless steel at the weld seam to form the heat exchange tube 100. A welded coiled tube can refer to rolling the stainless steel sheet 200 into a tube shape and then using welding equipment to weld at the weld seam to form the heat exchange tube 100.

[0106] Please combine Figures 10 to 16 In this embodiment, the heat exchange tube 100 can be manufactured as a whole using a toothed coil welding process. Specifically, a stainless steel plate 200 of a certain thickness is sequentially uncoiled via a conveyor belt. Figure 10 ), straightening ( Figure 11 ), pressing teeth ( Figure 12 ), rolled tube ( Figure 13 ),welding( Figure 14 ),flaw detection( Figure 15 ) and annealing ( Figure 16 Processes such as these are used to ultimately form a welded stainless steel coil. Tooth forming (forming protruding structure 14) is performed in... Figure 12 The tooth pressing process shown is completed in which a steel belt is conveyed between two circular molds, one of which has a flat surface and the other has a surface that complements and meshes with the formed teeth, thus forming the teeth.

[0107] In this invention, the heat exchange tube 100 can be manufactured as a welded tube using the welded processing technology of seamed steel pipe, which improves the heat transfer performance of the fluid inside the pipe 16 and makes up for the problem of insufficient thermal conductivity of stainless steel, thereby realizing the large-scale application of stainless steel to replace copper in the conventional air conditioning field where heat transfer requirements are high.

[0108] An air conditioner according to an embodiment of the present invention includes the heat exchange tube 100 of any of the above embodiments.

[0109] In the aforementioned air conditioner, a protruding structure 14 is provided on the inner surface of the pipe body 12 facing the pipe 16. When fluid flows inside the pipe 16, the protruding structure 14 can turbulently flow through it, thereby increasing the heat transfer performance of the heat exchange tube 100 and enabling it to be used in scenarios with higher heat exchange requirements. The groove 22 extends along the axial direction of the pipe body 12. When fluid flows inside the pipe 16, the groove 22 can rectify the fluid flow, causing it to flow along the axial direction P of the pipe body 12, thus reducing flow resistance and helping to lower the cost of the air conditioner.

[0110] Specifically, the heat exchange tube 100 can be used to transport fluid. During the flow process, the fluid exchanges heat with the heat exchange tube 100, and the heat exchange tube 100 then exchanges heat with the air or other components of the air conditioner (such as heat exchange plates and fins), thereby completing the heat exchange between the fluid and the air or other components of the air conditioner.

[0111] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0112] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchange tube for an air conditioner, characterized by, The heat exchange tube comprises: a tube body, the tube body being provided with a duct; a protruding structure protruding from an inner side of the tube body facing the duct, the protruding structure comprising a protruding strip structure, the protruding strip structure comprising at least two protruding strips, the two protruding strips and the inner side of the tube body facing the duct jointly forming a groove, the groove extending along an axial direction of the tube body, the protruding structure being adapted to generate a turbulent flow effect on a fluid flowing through the protruding structure to enhance heat transfer performance of the heat exchange tube, and the groove being adapted to straighten the fluid flowing through the groove to make the fluid flow along the axial direction of the tube body, thereby reducing flow resistance of the fluid.

2. The heat exchange tube according to claim 1, wherein The protruding strips extend along the axial direction of the tube body.

3. The heat exchange tube according to claim 1, wherein The protruding strip structure comprises three or more protruding strips, the middle protruding strip being the longest, and the protruding strips on both sides being successively shorter.

4. The heat exchange tube according to claim 3, wherein The protruding strip structure comprises three protruding strips, the three protruding strips comprising a first protruding strip, a second protruding strip and a third protruding strip, the second protruding strip being located between the first protruding strip and the third protruding strip, the length of the second protruding strip being greater than the length of the first protruding strip and the length of the third protruding strip, and the length of the first protruding strip being equal to the length of the third protruding strip.

5. The heat exchange tube according to claim 4, wherein The first protruding strip and the third protruding strip are symmetrically arranged on both sides of the second protruding strip.

6. The heat exchange tube of claim 1, wherein The protruding structure comprises a plurality of protruding strip structures, and the arrangement of the plurality of protruding strip structures comprises ordered arrangement or disordered arrangement.

7. The heat exchange tube according to any one of claims 1 to 6, wherein The protruding strips comprise shark-skin-tooth-like protruding teeth.

8. The heat exchange tube of claim 1, wherein The protruding structure comprises streamlined protruding teeth, and the streamlined protruding teeth are arranged in a spaced manner or connected to the protruding strip structure.

9. The heat exchange tube of claim 8, wherein Both ends of the protruding strips are provided with the streamlined protruding teeth.

10. The heat exchange tube of claim 8, wherein The streamlined protruding teeth form an accommodation space, and the protruding strip structure is arranged in the accommodation space.

11. The heat exchange tube of claim 1, wherein The tube body and the protruding structure are integrally formed.

12. The heat exchange tube of claim 1, wherein The heat exchange tube is a seamed stainless steel spiral welded pipe.

13. An air conditioner characterized by comprising: The heat exchange tube comprises the heat exchange tube according to any one of claims 1-12.

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