Heat exchange tube, heat exchanger and air conditioner
By setting protruding structures, such as internal thread teeth, on the inner surface of the heat exchange tube, the problem of poor heat exchange performance of heat exchange tubes with an outer diameter of less than 4mm is solved, achieving higher heat exchange efficiency and lower wind resistance.
Patent Information
- Application Number
- CN202421163597.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-05-24
AI Technical Summary
In the existing technology, heat exchange tubes with an outer diameter of 4 mm or less have poor heat exchange performance, resulting in poor heat exchange performance of the heat exchanger.
Design a heat exchange tube with an outer diameter of no more than 4 mm and a protruding structure, such as internal thread teeth, on the inner surface of the tube to increase the inner surface area and improve heat exchange performance.
The heat transfer coefficient of the heat exchange tubes was increased, the air resistance was reduced, and the heat exchange performance of the heat exchanger was improved. Specifically, the heat exchange capacity was increased by more than 5%, and the air resistance was reduced by more than 2%.
Smart Images
Figure CN223623457U_ABST
Abstract
Description
Technical Field
[0001] This application relates to, but is not limited to, the field of air conditioning technology, specifically referring to a heat exchange tube, a heat exchanger, and an air conditioner. Background Technology
[0002] In the refrigeration and air conditioning industry, heat exchangers typically use heat exchange tubes with an outer diameter of 5mm or 7mm. Because heat exchange tubes with an outer diameter of 4mm or less have a low heat transfer coefficient, heat exchangers using heat exchange tubes with an outer diameter of 4mm or less have poor heat transfer performance. Utility Model Content
[0003] This application provides a heat exchange tube, including a tube body and a protruding structure disposed on the inner surface of the tube body. The outer diameter of the tube body is not greater than 4 mm, and the protruding structure is configured to increase the area of the inner surface of the heat exchange tube.
[0004] In some exemplary embodiments, the protruding structure is an internal thread tooth.
[0005] In some exemplary embodiments, the tooth tip angle of the internal thread teeth is 10° to 25°.
[0006] In some exemplary embodiments, the tooth height of the internal thread teeth is 0.10 mm to 0.14 mm.
[0007] In some exemplary embodiments, the helix angle of the internal thread teeth is 8° to 16°.
[0008] In some exemplary embodiments, the number of teeth on the rack of the internal thread is 28 to 48.
[0009] In some exemplary embodiments, the wall thickness of the tube is 0.18 mm to 0.22 mm.
[0010] In some exemplary embodiments, the tube body is made of copper, aluminum, or a copper alloy.
[0011] In some exemplary embodiments, the outer diameter of the tube is 3.57 mm to 3.63 mm.
[0012] This application also provides a heat exchanger, including the heat exchange tube described in any of the above embodiments.
[0013] This application also provides an air conditioner that includes the heat exchanger described in any of the above embodiments.
[0014] The heat exchange tube provided in this embodiment has an outer diameter of no more than 4 mm and a protruding structure on the inner surface of the tube. The protruding structure is used to increase the area of the inner surface of the heat exchange tube, which can increase the heat transfer coefficient of the heat exchange tube. Moreover, since the outer diameter of the heat exchange tube is small and the wind resistance is small, the heat exchange tube is used in a heat exchanger, and the heat exchange performance of the heat exchanger is better. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the heat exchange tube in some embodiments of this application;
[0016] Figure 2 for Figure 1 A schematic diagram of the heat exchanger tube shown from the left.
[0017] Figure 3 for Figure 2 A magnified structural diagram of part A in the diagram;
[0018] Figure 4 for Figure 1 The diagram shows a front view of the heat exchanger tube in cross-section.
[0019] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part B in the diagram;
[0020] Figure 6 This is a comparison chart of the capacity and air resistance of heat exchanger M using the heat exchange tubes of this application and heat exchanger N using conventional heat exchange tubes with an outer diameter of 5 mm.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 100mm tube body, 200mm internal thread teeth. Detailed Implementation
[0023] The principles and features of this application are described below with reference to the accompanying drawings. The examples given are only for explaining this application and are not intended to limit the scope of this application.
[0024] The heat exchange tubes provided in the embodiments of this application, such as Figures 1 to 5 As shown, it includes a tube body 100 and a protruding structure protruding from the inner surface of the tube body 100. The outer diameter of the tube body 100 is no more than 4 mm, and the protruding structure is configured to increase the area of the inner surface of the heat exchange tube.
[0025] The heat exchange tube has an outer diameter of no more than 4 mm. The inner surface of the tube body 100 is provided with a protruding structure, which is used to increase the area of the inner surface of the heat exchange tube. This can increase the heat transfer coefficient of the heat exchange tube. Moreover, since the outer diameter of the heat exchange tube is small and the air resistance is small, the heat exchange tube is used in the heat exchanger, and the heat exchange performance of the heat exchanger is better.
[0026] In some examples, such as Figure 1 , Figure 2 and Figure 4 As shown, the protruding structure is configured as an internal thread tooth 200. The number of teeth in the internal thread tooth 200 can be one; or the number of teeth in the internal thread tooth 200 can be multiple. This configuration results in a larger inner surface area and better heat exchange performance for the heat exchange tube. Multiple teeth can be configured to be 28 to 48, such as 28, 38, or 48 teeth in the internal thread tooth 200. All of the above can achieve the purpose of this application, and their intent does not depart from the design concept of this utility model. Therefore, they will not be elaborated further and should all fall within the protection scope of this application.
[0027] In some embodiments, such as Figure 3 As shown, the tooth tip angle α of the internal thread tooth 200 is set to 10° to 25°, thus increasing the surface area of the internal thread tooth 200, i.e., increasing the inner surface area of the heat exchange tube. The tooth tip angle α of the internal thread tooth 200 can be set to 10°; or it can be set to 17.5°; or it can be set to 25°, etc.; the tooth tip surface of the internal thread tooth 200 can be set to a plane or a curved surface, etc. All of the above can achieve the purpose of this application, and their intent does not depart from the design concept of this utility model. Therefore, they will not be elaborated further here, and all should fall within the protection scope of this application.
[0028] In some embodiments, such as Figure 3 As shown, the tooth height c of the internal thread tooth 200 is set to 0.10mm to 0.14mm, so that the flow of refrigerant inside the tube 100 is basically unaffected, which can better ensure the heat exchange performance of the heat exchange tube. The tooth height c of the internal thread tooth 200 can be set to 0.10mm; or it can be set to 0.12mm; or it can be set to 0.14mm, etc.; all of the above can achieve the purpose of this application, and their intent does not depart from the design concept of this utility model, and will not be elaborated further here, all of which should fall within the protection scope of this application.
[0029] In some embodiments, such as Figure 5 As shown, the helix angle d of the internal thread teeth 200 is set to 8° to 16°. This facilitates the forward delivery of refrigerant along the intervals between adjacent internal thread teeth 200, ensuring better flow of refrigerant within the pipe body 100. The helix angle d of the internal thread teeth 200 can be set to 8°; or it can be set to 12°; or it can be set to 16°, etc. All of these can achieve the purpose of this application, and their intent does not depart from the design concept of this utility model. Therefore, they will not be elaborated further and should all fall within the protection scope of this application.
[0030] In some embodiments, such as Figure 3 As shown, the wall thickness b of the tube 100 is set to 0.18mm to 0.22mm. This results in higher strength of the tube 100, making it less prone to bending and deformation, and also lowering the manufacturing cost of the heat exchange tube. The wall thickness b of the tube 100 can be set to 0.18mm; or it can be set to 0.20mm; or it can be set to 0.22mm, etc. All of these can achieve the purpose of this application, and their intent does not depart from the design concept of this utility model. Therefore, they will not be elaborated further and should all fall within the protection scope of this application.
[0031] In some embodiments, such as Figure 1 As shown, the tube body 100 is made of copper, aluminum, or copper alloy, all of which have good heat exchange performance.
[0032] In some embodiments, the outer diameter of the tube 100 is set to 3.57 mm to 3.63 mm, which results in a smaller outer diameter of the heat exchange tube, lower air resistance, and better heat exchange performance. The outer diameter of the tube 100 can be set to 3.57 mm; or it can be set to 3.60 mm; or it can be set to 3.63 mm, etc.; all of these can achieve the purpose of this application, and their intent does not depart from the design concept of this utility model, and will not be elaborated further here, all of which should fall within the protection scope of this application.
[0033] The heat exchanger provided in this application embodiment (not shown in the figure) includes the heat exchange tube described in any of the above embodiments.
[0034] This heat exchanger possesses all the advantages of the heat exchange tubes provided in any of the above embodiments, which will not be elaborated further here.
[0035] like Figure 6 As shown, under the same heat exchanger volume and number of heat exchanger tubes, the heat exchanger M using the heat exchanger tubes of this application has a heat exchange capacity P that is increased by more than 5% and a wind resistance Q that is reduced by more than 2% compared to the heat exchanger N using conventional heat exchanger tubes with an outer diameter of 5mm.
[0036] The air conditioner provided in this application embodiment (not shown in the figure) includes the heat exchanger described in any of the above embodiments.
[0037] This air conditioner possesses all the advantages of the heat exchanger provided in any of the above embodiments, which will not be elaborated further here.
[0038] In summary, the heat exchange tube provided in this application embodiment has an outer diameter of no more than 4mm and a protruding structure on the inner surface of the tube. The protruding structure is used to increase the area of the inner surface of the heat exchange tube, which can increase the heat transfer coefficient of the heat exchange tube. Moreover, since the outer diameter of the heat exchange tube is small and the wind resistance is small, the heat exchange tube is better when applied to a heat exchanger, resulting in better heat exchange performance of the heat exchanger.
[0039] In the description of this application, 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", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and 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 application.
[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0044] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A heat exchange tube, characterized in that, It includes a tube body and a protruding structure on the inner surface of the tube body. The outer diameter of the tube body is no more than 4 mm, and the protruding structure is configured to increase the area of the inner surface of the heat exchange tube. The wall thickness of the tube is 0.18 mm to 0.22 mm, the material of the tube is copper or copper alloy, and the outer diameter of the tube is 3.57 mm to 3.63 mm.
2. The heat exchange tube according to claim 1, characterized in that, The protruding structure is an internal thread tooth.
3. The heat exchange tube according to claim 2, characterized in that, The tooth tip angle of the internal thread is 10° to 25°.
4. The heat exchange tube according to claim 2, characterized in that, The tooth height of the internal thread is 0.10 mm to 0.14 mm.
5. The heat exchange tube according to claim 2, characterized in that, The helix angle of the internal thread teeth is 8° to 16°.
6. The heat exchange tube according to claim 2, characterized in that, The number of teeth on the internal thread is between 28 and 48.
7. A heat exchanger, characterized in that, Includes the heat exchange tube as described in any one of claims 1 to 6.
8. An air conditioner, characterized in that, Includes the heat exchanger as described in claim 7.