Internal thread aluminum pipe, heat exchanger and air conditioner
By using internal threaded aluminum pipes in the heat exchanger and using the optimized threaded tooth structure, the problem of difficult to take into account the cost and effect of the heat exchanger and air conditioner in the prior art is solved, and cost reduction and heat exchange efficiency improvement are achieved.
Patent Information
- Application Number
- CN202311120370.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-31
- Publication Date
- 2025-03-07
AI Technical Summary
In the prior art, the cost and heat exchange effect of heat exchangers and air conditioners are difficult to take into account. The rising price of copper pipe materials leads to an increase in costs, while switching to other materials may affect the heat exchange effect.
The internal threaded aluminum pipe is used. The pipe body is made of aluminum alloy, and the threaded teeth are installed on the inner side wall of the pipe body. By optimizing the parameters such as the helical angle, tooth height, and number of teeth of the threaded teeth, the internal surface area of the heat exchange is increased, and the turbulent strength of the refrigerant is improved, thereby improving the heat exchange efficiency.
It realizes the reduction of the cost of heat exchangers and air conditioners, while maintaining or improving the heat exchange effect, solving the problem of difficulty in taking into account both costs and effects.
Smart Images
Figure CN119573445A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of air conditioning, and in particular to an internally threaded aluminum tube, a heat exchanger and an air conditioner. Background Art
[0002] With the development of society, consumers' spending power is getting higher and higher, which also makes consumers' demand for quality of life higher and higher; in order to improve the comfort of living and working environment, most consumers choose to install air conditioners in their living and working environments.
[0003] Air conditioners can provide air conditioning for living and working environments to improve the comfort of living and working environments. Among them, heat exchangers are important components for air conditioning. The heat exchanger has pipes for the flow of refrigerant. Generally, copper pipes are used for the pipes in the heat exchanger. The price of copper materials continues to rise, which leads to higher and higher overall costs for heat exchangers and air conditioners. However, arbitrarily changing the material of the heat exchanger pipes will easily affect the heat exchange effect of the heat exchanger. Therefore, it is difficult to balance the cost and heat exchange effect of the heat exchanger pipes in the prior art. Summary of the invention
[0004] The problem solved by the present invention is how to improve the technical problem that it is difficult to balance the cost and heat exchange effect of a heat exchanger and an air conditioner.
[0005] In order to solve the above problems, the present invention provides an internally threaded aluminum tube, comprising:
[0006] Tube body, made of aluminum alloy;
[0007] Thread teeth are provided on the inner wall of the tube body;
[0008] The outer diameter of the tube body ranges from 4.95 mm to 5.05 mm, and the helix angle of the thread teeth ranges from 15° to 25°.
[0009] Optionally, the outer diameter of the tube body is 5 mm.
[0010] Optionally, the helix angle is 20°.
[0011] Optionally, the tooth height of the thread teeth ranges from 0.1 mm to 0.22 mm.
[0012] Optionally, the tooth top angle of the thread teeth ranges from 25° to 35°.
[0013] Optionally, the wall thickness of the tube body ranges from 0.37 mm to 0.43 mm.
[0014] Optionally, the number of thread teeth ranges from 40 to 50.
[0015] Optionally, the m / m value of the internally threaded aluminum tube ranges from 15 g / m to 25 g / m.
[0016] A heat exchanger comprises the internally threaded aluminum tube mentioned above.
[0017] An air conditioner comprises the above-mentioned heat exchanger.
[0018] The internally threaded aluminum tube, heat exchanger and air conditioner provided by the present invention have the following beneficial effects compared with the prior art:
[0019] The material of the internally threaded aluminum tube is aluminum alloy, which is lighter and has lower cost than the copper tube in the prior art, and can achieve the purpose of reducing the cost of the heat exchanger and the air conditioner. Furthermore, by optimizing various parameters such as the thread angle of the thread teeth, and optimizing various parameters such as the outer diameter of the tube body, the heat exchange internal surface area inside the internally threaded aluminum tube is made larger, and at the same time, the refrigerant in the internally threaded aluminum tube produces a secondary flow different from the radial direction, and the turbulence intensity is enhanced, so that the internally threaded aluminum tube has a higher heat exchange efficiency while being lightweight. Based on this, the internally threaded aluminum tube provided by the present invention and the heat exchanger and air conditioner using the internally threaded aluminum tube can improve the technical problem that the cost and heat exchange effect of the heat exchanger and air conditioner in the prior art are difficult to take into account. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A cross-sectional view of an internally threaded aluminum tube provided in an embodiment of the present application;
[0021] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;
[0022] Figure 3 A partial cross-sectional view of an internally threaded aluminum tube provided in an embodiment of the present application;
[0023] Figure 4 This is a table for recording simulation test parameters provided in this application.
[0024] Description of reference numerals:
[0025] 10-inner thread aluminum tube; 11-tube body; 12-thread teeth. DETAILED DESCRIPTION
[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0027] First embodiment
[0028] In this embodiment, an internally threaded aluminum tube 10 is provided, and the internally threaded aluminum tube 10 is applied to a heat exchanger, and the heat exchanger can be applied to air conditioning equipment such as an air conditioner or a humidifier. It is worth noting that the internally threaded aluminum tube 10 can improve the technical problem of the heat exchanger and the air conditioner in the prior art that the cost and heat exchange effect are difficult to balance.
[0029] In the present embodiment, the internally threaded aluminum tube 10 includes a tube body 11 and thread teeth 12. The tube body 11 is made of aluminum alloy, and the tube body 11 is a hollow tubular structure. The thread teeth 12 are arranged on the inner side wall of the tube body 11; wherein, there are multiple thread teeth 12, and multiple thread teeth 12 are arranged on the inner side wall of the tube body 11 at intervals, and each thread tooth 12 is extended along a spiral path; that is, multiple thread teeth 12 together form a structure similar to a thread shape. Optionally, the thread teeth 12 and the tube body 11 are an integral structure, in other words, the thread teeth 12 are cast by integral molding or machined on the inner side wall of the tube body 11 by machining. Moreover, in the present embodiment, the outer diameter of the tube body 11 ranges from 4.95 mm to 5.05 mm, and the helix angle of the thread teeth 12 ranges from 15° to 25°.
[0030] As described above, the material of the internally threaded aluminum tube 10 is aluminum alloy, which is lighter and has lower cost than the copper tube in the prior art, and can achieve the purpose of reducing the cost of the heat exchanger and the air conditioner. Further, by optimizing various parameters such as the thread angle of the thread teeth 12, and optimizing various parameters such as the outer diameter of the tube body 11, the heat exchange internal surface area inside the internally threaded aluminum tube 10 is larger, and at the same time, the refrigerant in the internally threaded aluminum tube 10 produces a secondary flow different from the radial direction, and the turbulence intensity is enhanced, so that the internally threaded aluminum tube 10 has a higher heat exchange efficiency while being lightweight. Based on this, the internally threaded aluminum tube 10 provided by the present invention and the heat exchanger and air conditioner using the internally threaded aluminum tube 10 can improve the technical problem that the cost and heat exchange effect of the heat exchanger and air conditioner in the prior art are difficult to take into account.
[0031] Optionally, in this embodiment, the outer diameter of the tube body 11 is 5 mm; Figure 1 In the perspective shown, the reference numeral D in the figure indicates the outer diameter of the tube body 11. Of course, in other embodiments of the present application, the outer diameter of the tube body 11 may also be 4.95 mm, 4.96 mm, 4.97 mm, 4.98 mm, 4.99 mm, 5.01 mm, 5.02 mm, 5.03 mm, 5.04 mm or 5.05 mm, etc. In other words, during the manufacturing process of the tube body 11, there may be a certain error in the outer diameter thereof, and the error is within the range of ±0.05 mm, and the tube body 11 can be regarded as normal.
[0032] In addition, in this embodiment, the value of the helix angle is preferably 20°; Figure 3 In the perspective shown, the symbol β in the figure indicates the helix angle. It should be noted that, since the thread teeth 12 are arranged on the inner wall of the tube body 11 in a spiral extension manner, the refrigerant will be guided by the thread teeth 12 during the flow of the refrigerant in the tube body 11, so that the refrigerant is guided by the spiral direction, and then the refrigerant has a tendency to flow along the spiral path during the flow along the axial direction of the pipeline, so that the refrigerant can fully contact the inner wall of the tube body 11, thereby increasing the heat exchange area and improving the heat exchange efficiency.
[0033] It should be understood that in other embodiments of the present application, the helix angle may also be 15°, 16°, 17°, 18°, 19°, 21°, 22°, 23°, 24° or 25°, etc.
[0034] Further, in this embodiment, the tooth height of the thread teeth 12 ranges from 0.1 mm to 0.22 mm; Figure 2 In the perspective shown, the reference numeral h in the figure indicates the tooth height of the thread teeth 12. Setting the tooth height of the thread teeth 12 within the above range can ensure that the thread teeth 12 provide an effective guiding effect on the refrigerant, and can also avoid the thread teeth 12 being too high, which leads to an increase in the manufacturing cost of the thread teeth 12, and can also prevent the thread teeth 12 from having a low strength. It should be understood that the tooth height of the thread teeth 12 can be 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, 0.21mm, 0.22mm, etc., wherein the tooth height is preferably 0.2mm.
[0035] In addition, the tooth top angle of the thread teeth 12 ranges from 25° to 35°; Figure 2 In the perspective shown, the reference alpha in the figure indicates the tooth top angle. In other words, the tooth top angle of the thread tooth 12 can be 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34° or 35°, etc., wherein the tooth top angle is preferably 30°.
[0036] In this embodiment, the wall thickness of the tube body 11 ranges from 0.37 mm to 0.43 mm; Figure 2 In the perspective shown, the reference d in the figure indicates the tube wall thickness. In other words, the tube wall thickness of the tube body 11 can be 0.37 mm, 0.38 mm, 0.39 mm, 0.4 mm, 0.41 mm, 0.42 mm, 0.43 mm, etc., wherein the tube wall thickness of the tube body 11 is preferably 0.4 mm.
[0037] It is worth noting that the tube wall thickness refers to the distance from the root of the thread teeth 12 to the outer wall of the tube body 11 . Therefore, the tube wall thickness can also be regarded as the bottom wall thickness of the thread teeth 12 .
[0038] In this embodiment, the number of teeth of the thread teeth 12 ranges from 40 to 50. In other words, the number of teeth of the thread teeth 12 can be 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 or 50, etc., wherein the number of teeth is preferably 45.
[0039] In this embodiment, the weight per gram of the internally threaded aluminum tube 10 ranges from 15 g / m to 25 g / m. In other words, the weight per gram of the internally threaded aluminum tube 10 can be 15 g / m, 16 g / m, 17 g / m, 18 g / m, 19 g / m, 20 g / m, 21 g / m, 22 g / m, 23 g / m, 24 g / m or 25 g / m, etc., wherein the weight per gram of the internally threaded aluminum tube 10 is preferably 18.5 g / m.
[0040] Based on the internally threaded aluminum tube 10 provided above, the applicant compared the heat exchange effect between the heat exchanger made of the internally threaded aluminum tube 10 provided in this application and the heat exchanger made of a copper tube with an outer diameter of 5 mm in the prior art.
[0041] like Figure 4 It can be seen from the table shown that in the test of simulated evaporation, the wind speed factor and flow factor of the heat exchanger made of the internally threaded aluminum tube 10 and the heat exchanger made of the copper tube are controlled to be equal, wherein the heat exchange rate of the heat exchanger made of the internally threaded aluminum tube 10 provided in the present application is significantly higher than that of the heat exchanger made of the copper tube, and the superheat of the heat exchanger made of the internally threaded aluminum tube 10 is significantly higher than that of the heat exchanger made of the copper tube. Therefore, it means that the heat exchange effect of the heat exchanger made of the internally threaded aluminum tube 10 provided in the embodiment of the present application in the evaporation process can achieve the heat exchange effect of the heat exchanger made of the copper tube in the evaporation process.
[0042] Similarly, in the simulated condensation test, the wind speed factor and flow factor of the heat exchanger made of the internal threaded aluminum tube 10 and the heat exchanger made of the copper tube are also controlled to be equal. Among them, the heat exchange rate of the heat exchanger made of the internal threaded aluminum tube 10 provided in the present application is slightly different from that of the heat exchanger made of the copper tube, and the supercooling of the heat exchanger made of the internal threaded aluminum tube 10 is significantly lower than that of the heat exchanger made of the copper tube. Therefore, it is indicated that the heat exchange effect of the heat exchanger made of the internal threaded aluminum tube 10 provided in the embodiment of the present application during the condensation process is equivalent to the heat exchange effect of the heat exchanger made of the copper tube in the prior art during the condensation process.
[0043] It is worth noting that during the evaporation simulation test and the condensation simulation test, parameters such as pressure and temperature can also be set to the same values.
[0044] It should be noted that Figure 4 The "D5 copper heat exchanger" refers to a heat exchanger made of copper tubes with an outer diameter of 5mm; Figure 4 The "D5 aluminum heat exchanger" refers to a heat exchanger made of the internally threaded aluminum tube 10 provided in this embodiment.
[0045] Therefore, it can be seen that the use of the internally threaded aluminum tube 10 of the present application can not only meet the existing heat exchange effect requirements, but also achieve the purpose of reducing the manufacturing cost, and can improve the technical problem of the cost and heat exchange effect of the heat exchanger and air conditioner in the prior art that it is difficult to take into account both.
[0046] In summary, the material of the internally threaded aluminum tube 10 is aluminum alloy, which is lighter and has lower cost than the copper tube in the prior art, and can achieve the purpose of reducing the cost of the heat exchanger and the air conditioner. Further, by optimizing the parameters such as the thread angle, tooth height and number of teeth of the thread teeth 12, and optimizing the parameters such as the outer diameter and wall thickness of the tube body 11, the meter weight parameter of the internally threaded aluminum tube 10 is also optimized, so that the heat exchange internal surface area inside the internally threaded aluminum tube 10 is larger, and at the same time, the refrigerant in the internally threaded aluminum tube 10 produces a secondary flow different from the radial direction, and the turbulence intensity is enhanced, so that the internally threaded aluminum tube 10 has a higher heat exchange efficiency while being lightweight. Based on this, the internally threaded aluminum tube 10 provided by the present invention and the heat exchanger and air conditioner using the internally threaded aluminum tube 10 can improve the technical problem that the cost and heat exchange effect of the heat exchanger and air conditioner in the prior art are difficult to take into account.
[0047] Second embodiment
[0048] This embodiment provides a heat exchanger, which uses the internally threaded aluminum tube 10 provided in the first embodiment. Therefore, the heat exchanger provided in this embodiment can improve the technical problem of the prior art that it is difficult to balance the cost and heat exchange effect of the heat exchanger and air conditioner.
[0049] The heat exchanger further comprises a plurality of fins, the plurality of fins are arranged in parallel, and the internally threaded aluminum tube 10 is passed through the plurality of fins. In addition, the heat exchanger may further comprise structures such as a heat exchanger side plate.
[0050] In addition, in this embodiment, the internally threaded aluminum tube 10 and the fins or the internally threaded aluminum tube 10 and the side plate of the heat exchanger can be interference fit by a tube expander or other equipment, so that sufficient heat exchange can be performed.
[0051] Third embodiment
[0052] This embodiment provides an air conditioner, which uses the heat exchanger provided in the second embodiment. Of course, it can also be regarded as an air conditioner that uses the internally threaded aluminum tube 10 provided in the first embodiment. Therefore, the air conditioner can improve the technical problem of the prior art that the cost and heat exchange effect of the heat exchanger and air conditioner are difficult to balance.
[0053] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.
Claims
1. An internally threaded aluminum tube, characterized in that: include: A tube body (11) made of aluminum alloy; Thread teeth (12) are provided on the inner wall of the tube body (11); The outer diameter of the tube body (11) is in the range of 4.95 mm to 5.05 mm, and the helix angle of the thread teeth (12) is in the range of 15° to 25°.
2. The internally threaded aluminum tube according to claim 1, characterized in that: The outer diameter of the tube body (11) is 5 mm.
3. The internally threaded aluminum tube according to claim 1, characterized in that: The value of the helix angle is 20°.
4. The internally threaded aluminum tube according to claim 1, characterized in that: The tooth height of the thread teeth (12) ranges from 0.1 mm to 0.22 mm.
5. The internally threaded aluminum tube according to claim 1, characterized in that: The tooth top angle of the thread teeth (12) ranges from 25° to 35°.
6. The internally threaded aluminum tube according to claim 1, characterized in that: The wall thickness of the tube body (11) ranges from 0.37 mm to 0.43 mm.
7. The internally threaded aluminum tube according to claim 1, characterized in that: The number of teeth of the thread teeth (12) ranges from 40 to 50.
8. The internally threaded aluminum tube according to claim 1, characterized in that: The meter weight of the internally threaded aluminum tube (10) ranges from 15 g / m2 to 25 g / m2.
9. A heat exchanger, characterized in that: It comprises the internally threaded aluminum tube (10) as described in any one of claims 1 to 8.
10. An air conditioner, characterized in that: Comprising the heat exchanger as claimed in claim 9.