Heat exchange tube and air conditioner

Abstract

The utility model discloses a heat exchange tube and an air conditioner. The heat exchange tube is used for the air conditioner and comprises a tube body, a heat exchanger, a heat exchanger and a heat exchanger, the protruding structures are arranged on the inner side face, facing the pipeline, of the pipe body in a protruding mode, and the protruding structures are configured to play a role in turbulent flow of fluid flowing through the protruding structures, so that the heat transfer performance of the heat exchange pipe is enhanced. According to the heat exchange pipe, the protruding structures are arranged on the inner side face, facing the pipeline, of the pipe body, when fluid flows in the pipeline, the protruding structures can play a role in turbulent flow of the fluid flowing through the protruding structures, under the turbulent flow effect, the heat transfer performance of the heat exchange pipe can be improved, and therefore the heat exchange pipe can be applied to the scene with the higher heat exchange requirement.

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 is configured to turbulent the fluid flowing through it, thereby enhancing the heat transfer performance of the heat exchange tube.

[0007] The aforementioned heat exchange tube has a protruding structure on the inner side of the tube body facing the pipe. When the fluid flows in the pipe, the protruding structure can turbulent the fluid flowing through it. Under the turbulence effect, the heat transfer performance of the heat exchange tube can be increased, thus enabling the heat exchange tube to be applied to scenarios with higher heat exchange requirements.

[0008] In some embodiments, the protrusion structure includes streamlined teeth, each of which includes a first end, a connecting portion, and a second end. The first end is connected to the second end via the connecting portion. Both the first end and the second end are sharp protrusions, and the connecting portion is streamlined.

[0009] In some embodiments, the streamlined tooth includes a first streamlined tooth and a second streamlined tooth, a first end of the first streamlined tooth being connected to a first end of the second streamlined tooth, and a second end of the first streamlined tooth being connected to a second end of the second streamlined tooth to form a diamond-shaped graphic structure.

[0010] In some embodiments, the length direction of the rhomboid-shaped graphic structure is parallel to the axial direction of the tube body.

[0011] In some embodiments, the aspect ratio L / W of the rhomboid-shaped graphic structure satisfies 0.01≤L / W≤100.

[0012] In some embodiments, the streamlined tooth has a tooth height h that satisfies h > 0.0 mm, a bottom wall thickness H that satisfies H > 0.1 mm, and a tooth root thickness d that satisfies d > 0.05 mm.

[0013] In some embodiments, the streamlined tooth has a triangular cross-section, with the apex angle γ satisfying 0° < γ < 180°.

[0014] In some embodiments, the heat exchange tube includes a plurality of rhomboid-shaped graphic structures, and the plurality of rhomboid-shaped graphic structures are arranged in a uniform or random manner.

[0015] In some embodiments, the tube body and the protruding structure are integrally formed.

[0016] In some embodiments, the heat exchange tube is a welded stainless steel coil tube.

[0017] An air conditioner according to an embodiment of the present invention includes the heat exchange tube of any of the above embodiments.

[0018] The aforementioned heat exchange tube has a protruding structure on the inner side of the tube body facing the pipe. When the fluid flows in the pipe, the protruding structure can turbulent the fluid flowing through it. Under the turbulence effect, the heat transfer performance of the heat exchange tube can be increased, thus enabling the heat exchange tube to be applied to scenarios with higher heat exchange requirements.

[0019] 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

[0020] 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:

[0021] 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;

[0022] Figure 2 yes Figure 1 A schematic diagram of the cross-section of the heat exchange tube along line AA;

[0023] Figure 3 yes Figure 2 An enlarged schematic diagram of section B of the heat exchange tube;

[0024] Figures 4 to 5 This is a schematic diagram showing the dimensions and structure of a rhombus-shaped graphic structure according to an embodiment of this utility model.

[0025] Figures 6 to 9 This is a schematic diagram of the arrangement of the protruding structure according to an embodiment of the present utility model;

[0026] 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.

[0027] Explanation of key component reference numerals:

[0028] Heat exchange tube 100, tube body 12, protruding structure 14, pipe 16, streamlined teeth 18, first end 20, connecting part 22, second end 24, first streamlined teeth 26, second streamlined teeth 28, stainless steel plate 200. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Please see Figures 1 to 3 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 is configured to turbulent the fluid flowing through the protruding structure 14, thereby enhancing the heat transfer performance of the heat exchange tube 100.

[0035] The heat exchange tube 100 has a protruding structure 14 on the inner side of the tube body 12 facing the pipe 16. When the fluid flows in the pipe 16, the protruding structure 14 can turbulent the fluid flowing through the protruding structure 14. Under the turbulence effect, the heat transfer performance of the heat exchange tube can be increased, so that the heat exchange tube 100 can be applied to scenarios with higher heat exchange requirements.

[0036] Specifically, the heat exchange tube 100 is a tube that can exchange heat with other components of the 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).

[0037] 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.

[0038] 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 structure 14 disrupts the smooth flow of the fluid during its flow process, thereby altering the flow field characteristics and enhancing the heat transfer performance of heat exchange tube 100.

[0039] 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.

[0040] Optionally, in one embodiment, the inner surface of the pipe body 12 facing the pipe 16 is provided with a plurality of protruding structures 14. The plurality of protruding structures 14 have the same structure, and the plurality of protruding structures 14 can be arranged in a uniform manner or in a random manner. Optionally, in one embodiment, all the protruding structures 14 have different structures. In one embodiment, some protruding structures 14 have the same structure, and some protruding structures 14 have different structures.

[0041] 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.

[0042] In some implementations, please refer to Figures 1 to 6The protruding structure 14 includes a streamlined tooth 18, which includes a first end 20, a connecting portion 22, and a second end 24. The first end 20 is connected to the second end 24 through the connecting portion 22. Both the first end 20 and the second end 24 are sharp protruding ends, and the connecting portion 22 is streamlined.

[0043] Therefore, while achieving the turbulence effect, the streamlined teeth 18 can reduce resistance, which is beneficial to reducing the cost of the air conditioner.

[0044] 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 tooth 18 can be a tooth profile design used in fluid machinery, aiming to optimize fluid dynamics performance and reduce drag. In one embodiment, the streamlined tooth 18 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.

[0045] 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 is designed as a streamlined toothed structure 18, 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 smaller power source, which helps to reduce the cost of the air conditioner.

[0046] Optionally, please combine Figure 1 and Figure 6 In one embodiment, the first end 20 is the end facing the fluid inflow into the protrusion structure 14 (i.e., the front end), and the second end 24 is the end from which the fluid flows out of the protrusion structure 14 (i.e., the rear end).

[0047] Please combine Figure 4 and Figure 6 The first end 20 is a sharp protrusion. The fluid first flows over this sharp protrusion, which plays a turbulent role and enhances the heat transfer of the heat exchange tube 100. The connecting part 22 is a streamlined protruding tooth, which enhances heat transfer while reducing flow resistance. The protruding teeth of the second end 24 converge into a point with the streamline of the connecting part 22. The flowing fluid forms a vortex here due to the flow inertia, which enhances the turbulence. The fluid then flows to the next complete streamlined tooth 18.

[0048] Alternatively, in one embodiment, the streamlined teeth 18 can be made into a fish-scale-like streamlined shape.

[0049] In some implementations, please refer to Figure 1 and Figure 6 The streamlined tooth 18 includes a first streamlined tooth 26 and a second streamlined tooth 28. The first end 20 of the first streamlined tooth 26 is connected to the first end 20 of the second streamlined tooth 28, and the second end 24 of the first streamlined tooth 26 is connected to the second end 24 of the second streamlined tooth 28 to form a diamond-shaped graphic structure.

[0050] Therefore, the rhomboid-shaped graphic structure formed by the first streamlined tooth 26 and the second streamlined tooth 28 can be used as a repeating unit to set multiple rhomboid-shaped graphic structures on the inner side of the tube body 12 facing the pipe 16, thereby conveniently causing turbulence to the fluid in the pipe 16.

[0051] Specifically, the rhombus-shaped graphic structure can be understood as having four vertices and four sides, similar to the shape of a rhombus. For example, the connection between the first end 20 of the first streamlined tooth 26 and the first end 20 of the second streamlined tooth 28 forms a first point (left point); the connection between the second end 24 of the first streamlined tooth 26 and the second end 24 of the second streamlined tooth 28 forms a second point (right point); the corner of the connecting part 22 of the first streamlined tooth 26 forms a third point (upper point); and the corner of the connecting part 22 of the second streamlined tooth 28 forms a fourth point (lower point). A side is formed between the first and third points, between the third and second points, between the first and fourth points, and between the fourth and second points. The middle part of the rhombus-shaped graphic structure is the space enclosed by the first streamlined tooth 26 and the second streamlined tooth 28, and the bottom surface of this space is a portion of the inner surface of the tube body 12 facing the pipe 16.

[0052] Optionally, please combine Figure 4 and Figure 5 A rhombus-shaped graphic structure is a symmetrical graphic structure. For example, a rhombus-shaped graphic structure is an axisymmetric graphic structure about the line connecting the first and second points, and also an axisymmetric graphic structure about the line connecting the third and fourth points.

[0053] The arrangement of multiple rhomboid-shaped graphic structures includes, but is not limited to, uniform arrangement and random arrangement.

[0054] In some implementations, please refer to Figure 4 , Figure 5 and Figure 16 The length direction of the rhomboid-shaped graphic structure is parallel to the axial direction P of the tube body 12.

[0055] This can enhance the turbulence effect of the protruding structure 14.

[0056] Specifically, the rhomboid-shaped graphic structure has length and width. In one embodiment, the length direction is along the line connecting the first and second points, and the width direction is along the line connecting the third and fourth points. When fluid enters the pipe 16, the overall flow direction of the fluid is along the axial direction P of the pipe body 12. The length direction of the rhomboid-shaped graphic structure is parallel to the axial direction P of the pipe body 12, so that when the fluid flows through the rhomboid-shaped graphic structure, it first flows into the sharp first ends 20 of the two streamlined teeth 18 in a direction parallel to the length direction of the rhomboid-shaped graphic structure. The first ends 20 can play a better role in turbulence in this direction, further enhancing heat transfer. The connecting part 22 is located in the middle of the streamlined teeth 18, which enhances heat transfer while reducing flow resistance. The sharp second ends 24 of the two streamlined teeth 18 converge into a point with the streamlines. Due to the flow inertia, the flowing fluid forms a vortex here, enhancing turbulence. The fluid then flows to the next complete streamlined tooth 18.

[0057] Optionally, please combine Figure 4 In one embodiment, the rhombus-shaped graphic structure can exhibit an elongated feature, meaning its length is significantly greater than its width, for example, the length is 1.5 times the width. Optionally, please refer to... Figure 5 In one embodiment, the rhombus-shaped graphic structure can exhibit a short and stout characteristic, that is, the difference between the length and the width is small, for example, the length is 1.1 times or 1 times the width.

[0058] To facilitate the illustration of protrusion structure 14, Figures 1 to 3 as well as Figures 6 to 9 The heat exchange tube 100 in the picture is in its unfolded and laid-out state.

[0059] In some implementations, please refer to Figure 4 and Figure 5 The aspect ratio L / W of the rhomboid-shaped graphic structure satisfies 0.01≤L / W≤100.

[0060] Therefore, the protrusion structure 14 has a wide range of shape options and a large range of application scenarios.

[0061] Specifically, the length of the rhombus-shaped graphic structure is L, and the width of the rhombus-shaped graphic structure is W. The aspect ratio is L / W. In some examples, L / W = 0.01, 0.05, 0.08, 0.1, 0.3, 0.5, 1, 5, 10, 15, 20, 30, 40, 50, 60, 70, 80, 85, 90, 92, 95, 98, 100, or other values ​​between 0.01 and 100.

[0062] In some implementations, please refer to Figure 2 and Figure 3The tooth height h of the streamlined tooth 18 satisfies h > 0.0 mm, the bottom wall thickness H satisfies H > 0.1 mm, and the tooth root thickness d satisfies d > 0.05 mm.

[0063] Therefore, the streamlined tooth 18 can meet the application needs of multiple scenarios.

[0064] Specifically, the protruding structure 14 protrudes from the inner surface of the pipe body 12 facing the pipe 16. In one embodiment, the protruding structure 14 includes streamlined teeth 18, the tooth height h of which satisfies h > 0.0 mm, allowing the streamlined teeth 18 to protrude from the inner surface of the pipe body 12 facing the pipe 16, thereby turbulenting the fluid and reducing flow resistance. In some examples, h = 0.01 mm, 0.05 mm, 0.08 mm, 0.1 mm, 0.15 mm, or other values ​​greater than 0 mm. The upper limit of h can be determined based on factors such as the internal space of the pipe 16 and the manufacturing process.

[0065] The bottom wall can refer to the wall of the pipe body 12, and the bottom wall thickness can refer to the thickness of the pipe body 12 wall. The streamlined teeth 18 can protrude from the surface of the bottom wall, which is the inner surface of the pipe body 12 facing the pipe 16. The bottom wall thickness H satisfies H > 0.1 mm, ensuring that the pipe body 12 wall is not too thin, thus preventing insufficient strength and processing difficulties. In some examples, H = 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, or other values ​​greater than 0.1 mm. The upper limit of H can be determined based on factors such as the cost of the pipe body 12, strength requirements, and manufacturing process.

[0066] The tooth root thickness d is a factor that determines the area occupied by the streamlined tooth 18 on the inner side of the tube body 12 facing the pipe 16. d > 0.05 mm can, to a certain extent, avoid the situation where the streamlined tooth 18 occupies too small an area on the inner side of the tube body 12 facing the pipe 16, which would cause processing difficulties.

[0067] In some examples, d = 0.06mm, 0.07mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, or other values ​​greater than 0.05mm. The upper limit of d can be determined based on factors such as the cost of the tube body 12, processing accuracy, and manufacturing process.

[0068] The cross-sectional shape of the streamlined tooth 18 includes, but is not limited to, regular or irregular shapes such as triangles, quadrilaterals, and sectors.

[0069] In some implementations, please refer to Figure 2 and Figure 3 The streamlined tooth 18 has a triangular cross-section, and the apex angle γ satisfies 0°<γ<180°.

[0070] Therefore, the streamlined tooth 18 with a triangular cross-section has a wide range of shape options and a large range of application scenarios.

[0071] Specifically, in Figure 3 In the embodiment shown, γ is an acute angle. In other embodiments, γ may be a right angle or an obtuse angle.

[0072] In some examples, γ = 1°, 5°, 10°, 15°, 20°, 25°, 40°, 55°, 60°, 70°, 80°, 90°, 120°, 150°, 170°, or other values ​​of 0° < γ < 180°.

[0073] In some implementations, please refer to Figures 6 to 9 The heat exchange tube 100 includes multiple rhomboid-shaped graphic structures, and the multiple rhomboid-shaped graphic structures can be arranged uniformly or randomly.

[0074] Therefore, the arrangement of the protruding structure 14 is flexible and can reduce costs.

[0075] Specifically, a rhombus-shaped graphic structure can be arranged according to actual needs.

[0076] In one embodiment, the arrangement of multiple rhombus-shaped graphic structures is uniform. Uniform arrangement can be understood as follows: each rhombus-shaped graphic structure has a minimum circumscribed square, and the first, second, third, and fourth points of each rhombus-shaped graphic structure are located on the left, right, top, and bottom sides of the square, respectively. The distance between the squares corresponding to two adjacent rhombus-shaped graphic structures is equal.

[0077] In one embodiment, the uniform arrangement includes, but is not limited to, independent uniform staggered arrangement, interconnected uniform staggered arrangement, and independent uniform horizontal arrangement.

[0078] Please combine Figure 6 Multiple rhombus-shaped graphic structures can be arranged in an independent, uniform, staggered pattern. Specifically, these structures are arranged in rows and columns. In the same row, the first distance (greater than zero) between the squares corresponding to two adjacent rhombus-shaped graphic structures is equal. In the same column, the second distance (greater than zero) between the squares corresponding to two adjacent rhombus-shaped graphic structures is equal. The first and second distances can be equal or unequal. In three adjacent rows, the projection of the rhombus-shaped graphic structure in the middle row onto the row direction partially overlaps with the rhombus-shaped graphic structures in the two adjacent rows.

[0079] Please combine Figure 7Multiple rhombus-shaped graphic structures can be arranged in a uniformly staggered, interconnected manner. Specifically, these structures are arranged in rows and columns. In the same row, the first distance (greater than zero) between the squares corresponding to two adjacent rhombus-shaped graphic structures is equal. In the same column, the second distance between the squares of two adjacent rhombus-shaped graphic structures is zero, meaning that adjacent rhombus-shaped graphic structures are in contact. In three adjacent rows, the projection of the rhombus-shaped graphic structures in the middle row along the row direction partially overlaps with the rhombus-shaped graphic structures in the two adjacent rows.

[0080] Please combine Figure 8 Multiple rhombus-shaped graphic structures can be arranged in an independent and uniform horizontal arrangement. Specifically, these structures are arranged in rows and columns. In the same row, the first distance (greater than zero) between the squares corresponding to two adjacent rhombus-shaped graphic structures is equal. In the same column, the second distance (greater than zero) between the squares corresponding to two adjacent rhombus-shaped graphic structures is equal. The first and second distances can be equal or unequal. In three adjacent rows, the projection of the rhombus-shaped graphic structure in the middle row onto the row direction does not overlap with the rhombus-shaped graphic structures in the two adjacent rows.

[0081] It is understandable that the uniform arrangement method is not limited to the three arrangements mentioned above.

[0082] In one implementation, the arrangement of multiple rhombus-shaped graphic structures is random; that is, the arrangement of the rhombus-shaped graphic structures can be determined randomly. Random arrangement may include, but is not limited to, interconnected and staggered arrangements. Please refer to... Figure 9 Multiple rhombus-shaped graphic structures can be arranged in an interconnected and staggered manner. In the column direction, a part of the middle rhombus-shaped graphic structure is located between the two side rhombus-shaped graphic structures, and the middle rhombus-shaped graphic structure is in contact with the two side rhombus-shaped graphic structures.

[0083] In some implementations, please refer to Figure 1 The tube body 12 and the protruding structure 14 are integrally formed.

[0084] This is beneficial to improving the structural strength and manufacturing efficiency of the heat exchange tube 100.

[0085] 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.

[0086] In some implementations, please refer to Figure 16 The heat exchange tube 100 is a welded stainless steel coil tube.

[0087] Therefore, stainless steel can be used to manufacture heat exchange tube 100.

[0088] 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.

[0089] 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 conveyed by a conveyor belt and sequentially uncoiled. 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.

[0090] 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.

[0091] An air conditioner according to an embodiment of the present invention includes the heat exchange tube 100 of any of the above embodiments.

[0092] The air conditioner described above has a protruding structure 14 on the inner side of the pipe body 12 facing the pipe 16. When the fluid flows in the pipe 16, the protruding structure 14 can turbulent the fluid flowing through the protruding structure 14. Under the turbulence effect, the heat transfer performance of the heat exchange tube can be increased, so that the heat exchange tube 100 can be applied to scenarios with higher heat exchange requirements.

[0093] 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 other components of the air conditioner (such as heat exchange plates and fins), thereby completing the heat exchange between the fluid and other components of the air conditioner.

[0094] 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.

[0095] 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 comprising: The heat exchange tube includes: Pipe body, wherein a pipe is provided inside the pipe body; A protruding structure is provided on the inner side of the tube body facing the pipe. The protruding structure is configured to turbulent the fluid flowing through it, thereby enhancing the heat transfer performance of the heat exchange tube. The protruding structure includes streamlined teeth, each of which includes a first end, a connecting portion, and a second end. The first end is connected to the second end through the connecting portion. Both the first end and the second end are sharp protruding ends, and the connecting portion is streamlined.

2. The heat exchange tube according to claim 1, wherein The streamlined teeth include a first streamlined tooth and a second streamlined tooth. The first end of the first streamlined tooth is connected to the first end of the second streamlined tooth, and the second end of the first streamlined tooth is connected to the second end of the second streamlined tooth to form a diamond-shaped graphic structure.

3. The heat exchange tube according to claim 2, wherein The length direction of the rhomboid-shaped graphic structure is parallel to the axial direction of the tube body.

4. The heat exchange tube of claim 2, wherein The aspect ratio L / W of the rhomboid-shaped graphic structure satisfies 0.01≤L / W≤100.

5. The heat exchange tube according to claim 2, characterized in that, The streamlined tooth has a tooth height h that satisfies h > 0.0 mm, a bottom wall thickness H that satisfies H > 0.1 mm, and a tooth root thickness d that satisfies d > 0.05 mm.

6. The heat exchange tube according to claim 5, wherein The streamlined tooth has a triangular cross-section, and the apex angle γ satisfies 0°<γ<180°.

7. The heat exchange tube of claim 2, wherein The heat exchange tube includes multiple rhomboid-shaped graphic structures, and the multiple rhomboid-shaped graphic structures are arranged either uniformly or randomly.

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

9. The heat exchange tube of claim 1, wherein The heat exchange tube is a welded stainless steel coil tube.

10. An air conditioner characterized by comprising: Includes the heat exchange tube as described in any one of claims 1-9.

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