Air duct structure and electronic equipment
By adopting a cycloid-shaped transition surface design in the air duct structure, the problem of high resistance at the bends of the heat dissipation air duct is solved, thereby improving airflow and heat dissipation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-03-31
AI Technical Summary
In existing technologies, the resistance at the bends in the heat dissipation airflow is relatively large, resulting in reduced airflow and affecting the heat dissipation effect.
Design an air duct structure including a first duct, a transition duct, and a second duct. The inner wall of the transition duct adopts a cycloidal transition surface to reduce airflow change resistance and increase air volume.
By optimizing the shape of the inner wall of the transition duct, the airflow change resistance is reduced by about 3.5%, the air volume is increased, and the heat dissipation effect is improved.
Smart Images
Figure CN224068992U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of heat dissipation technology for electronic devices, and more particularly to an air duct structure and electronic equipment. Background Technology
[0002] Currently, with the rapid development of high-performance electronic products, the power of electronic products is getting higher and higher, and the corresponding demand for heat dissipation is also getting higher and higher.
[0003] In related technologies, heat dissipation is achieved by setting up heat dissipation ducts inside electronic products, which are connected to the outside air to create convection between the inside and outside of the electronic product, thus expelling heat through the ducts. However, the resistance at the bends of the heat dissipation ducts is relatively large, which reduces the airflow through the ducts and weakens the heat dissipation effect. Utility Model Content
[0004] This application provides an air duct structure and an electronic device that can solve the technical problem that the large resistance at the bend of the heat dissipation air duct reduces the airflow through the heat dissipation air duct, resulting in a weakened heat dissipation effect.
[0005] In a first aspect, embodiments of this application provide a duct structure, which includes:
[0006] First pipeline;
[0007] The second pipe extends at an angle to the extension direction of the first pipe.
[0008] A transition pipe is located between the first pipe and the second pipe. The two ends of the transition pipe are respectively connected to the first pipe and the second pipe. The inner wall surface of the transition pipe includes a first transition surface and a second transition surface disposed opposite to the first transition surface. The first transition surface is located outside the second transition surface.
[0009] The first transition surface includes a first transition line extending from the first pipe to the second pipe in a curved manner. The first transition line is part of a cycloid. The cycloid satisfies the following in the XY coordinate system: X = r(θ - sinθ) and Y = r(1 - cosθ), where X is the abscissa of the cycloid, Y is the ordinate of the cycloid, r is the radius of the rolling circle forming the cycloid, and θ is the angle at which the rolling circle forms the cycloid, 0 < θ ≤ 2π.
[0010] In some embodiments, the transition duct has a first interface and a second interface at each end. The first interface is connected to the first duct, and the second interface is connected to the second duct. The plane containing the first interface and the plane containing the second interface intersect to form an intersection line. The first transition line intersects the plane containing the first interface at a first point, and the first transition line intersects the plane containing the second interface at a second point. The perpendicular distance between the first point and the intersection line is equal to the perpendicular distance between the second point and the intersection line. This can further increase the airflow through the duct structure.
[0011] In some embodiments, both the first pipe and the second pipe are straight pipes or bends.
[0012] In some embodiments, one of the first pipe and the second pipe is a straight pipe, and the other is a bend.
[0013] In some embodiments, the first conduit, the transition conduit, and the second conduit are integrally formed. This can reduce the risk of leakage in the duct structure.
[0014] In some embodiments, the second transition surface includes a second transition line extending from the first pipe to the second pipe in a curved manner, the second transition line being an arc-shaped line.
[0015] In some embodiments, the second transition line is part of the cycloid, further improving heat dissipation.
[0016] In some embodiments, the second transition line is parallel to the first transition line, allowing airflow to pass more smoothly through the transition duct.
[0017] In some embodiments, the second transition line is a circular arc or an elliptical arc. This reduces the manufacturing difficulty of the transition pipe.
[0018] Secondly, embodiments of this application provide an electronic device, which includes a housing and a duct structure as described in any of the preceding claims, the duct structure being in communication with the interior of the housing.
[0019] Based on the above embodiments, the air duct structure and electronic equipment of this application have at least the following beneficial effects:
[0020] By sequentially connecting the first pipe, the transition pipe, and the second pipe, a heat dissipation airflow duct is defined. The inner wall of the transition pipe includes a first transition surface and a second transition surface opposite to the first transition surface. The first transition surface is located outside the second transition surface and includes a first transition line extending from the first pipe to the second pipe. The first transition line is part of a cycloid, which satisfies the following in the XY coordinate system: X = r(θ - sinθ) and Y = r(1 - cosθ), where X is the abscissa of the cycloid, Y is the ordinate of the cycloid, r is the radius of the rolling circle forming the cycloid, and θ is the angle at which the rolling circle forms the cycloid. Since 0 < θ ≤ 2π, the first transition line is part of a single-arch cycloid. Thus, the first transition surface with the first transition line can extend along the curvature of the cycloid, making the first transition surface smoother than a conventional arc surface. When the airflow passes through the first transition surface, the turning angle of the airflow is smoother, reducing the resistance that the airflow needs to overcome to change direction. This can increase the airflow through the airflow duct structure and thus improve the heat dissipation effect. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the first type of air duct structure provided in the embodiments of this application;
[0023] Figure 2 This is a schematic diagram of the second type of air duct structure provided in the embodiments of this application;
[0024] Figure 3 This is a schematic diagram of the third type of air duct structure provided in the embodiments of this application;
[0025] Figure 4 This is a schematic diagram of the fourth type of air duct structure provided in the embodiments of this application.
[0026] Explanation of reference numerals in the attached figures:
[0027] 100. Duct structure; 10. First duct; 20. Second duct; 30. Transition duct; 31. First transition surface; 311. First transition line; 32. Second transition surface; 321. Second transition line; 33. First interface; 331. First axis line; 34. Second interface; 341. Second axis line. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0029] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0030] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0032] Nowadays, electronic products are becoming increasingly powerful, and the corresponding demand for heat dissipation is also increasing. How to improve heat dissipation efficiency within a limited space is an ongoing research topic in the field of thermal design.
[0033] In related technologies, heat dissipation is achieved by incorporating internal cooling ducts into electronic products. These ducts connect the internal components of the product to the external air, creating convection currents that expel heat. However, the resistance at bends in these cooling ducts is significant, reducing the airflow and thus weakening the cooling effect.
[0034] To address the above issues, this application proposes a duct structure 100, which reduces airflow resistance at bends and increases the airflow through the duct structure 100, thereby improving heat dissipation.
[0035] Please see Figure 1In this embodiment of the application, the air duct structure 100 includes a first pipe 10, a transition pipe 30 and a second pipe 20 connected in sequence. The first pipe 10, the transition pipe 30 and the second pipe 20 define a heat dissipation air duct. The airflow flowing in the heat dissipation air duct can carry away the heat inside the electronic device and dissipate heat from the electronic device.
[0036] Taking the airflow direction from the first pipe 10 to the second pipe 20 as an example, the airflow flowing out of the first pipe 10 will change direction after entering the transition pipe 30 and flow into the second pipe 20, so that the airflow direction flowing out of the first pipe 10 and the airflow flowing into the second pipe 20 form an angle. When the airflow changes direction in the transition pipe 30, it needs to overcome the resistance at the bend. The magnitude of the resistance at the bend of the transition pipe 30 has an important influence on the airflow volume in the duct structure 100.
[0037] The transition pipe 30 is located between the first pipe 10 and the second pipe 20, and the two ends of the transition pipe 30 have a first interface 33 and a second interface 34 respectively. The first interface 33 and the second interface 34 are respectively connected to the first pipe 10 and the second pipe 20, so that the first pipe 10, the transition pipe 30 and the second pipe 20 are connected in sequence. The inner wall surface of the transition pipe 30 includes a first transition surface 31 and a second transition surface 32 disposed opposite to the first transition surface 31. The first transition surface 31 is located outside the second transition surface 32. The first transition surface 31 includes a first transition line 311 that bends and extends from the first pipe 10 to the second pipe 20. The first transition line 311 is part of a cycloid.
[0038] It should be noted that the transition pipe 30 is a bend, and the centerline of the first interface 33 is the first centerline 331, while the centerline of the second interface 34 is the second centerline 341. The first centerline 331 and the second centerline 341 are set at an angle, and the first transition surface 31 is further away from the bend side of the transition pipe 30 than the second transition surface 32. When airflow enters the transition pipe 30 from the first interface 33, the airflow will directly blow towards the first transition surface 31 of the transition pipe 30. The first transition surface 31 is the windward side of the transition pipe 30 and plays a role in guiding the airflow to change direction. Since the degree of curvature of the first transition surface 31 is related to the curvature of the first transition line 311, the resistance that the airflow needs to overcome when changing direction is mainly related to the curvature of the first transition line 311.
[0039] In this embodiment, the intersection of the first axis line 331 and the second axis line 341 can define a first plane. The projection of the first transition surface 31 on the first plane is the first transition line 311. The first transition line 311 can be a part of the cycloid, so that the first transition surface 31 of the transition pipe 30 can extend along the bending direction of the cycloid. It should be noted that the cycloid is also called a cycloid or a rolling circle. In mathematics, the cycloid is defined as the trajectory formed by a certain point on the boundary of a circle when the circle moves along a straight line. This circle is the rolling circle in this application.
[0040] More clearly, a cycloid can be described by parametric equations. In the XY coordinate system, a cycloid satisfies: X = r(θ - sinθ) and Y = r(1 - cosθ), where X is the abscissa of the cycloid, Y is the ordinate of the cycloid, r is the radius of the rolling circle forming the cycloid, and θ is the angle at which the rolling circle forms the cycloid. 0 < θ ≤ 2π, which makes the resulting cycloid a single-arched cycloid. A single-arched cycloid refers to a cycloid with a height of 2r and a width of 2πr.
[0041] The first transition line 311 is part of a single-arch cycloid, making the first transition surface 31 with the first transition line 311 smoother than a conventional arc surface. When the airflow passes through the first transition surface 31, the turning angle of the airflow will be smoother, and the resistance that the airflow needs to overcome to change direction will be smaller. The resistance is reduced by about 3.5%, which can increase the airflow volume through the air duct structure 100. The airflow can carry away more heat, thereby improving the heat dissipation effect.
[0042] Please see Figure 1 In some embodiments, the plane where the first interface 33 is located intersects the plane where the second interface 34 is located to form an intersection line. The first transition line 311 intersects the plane where the first interface 33 is located at a first point, and the first transition line 311 intersects the plane where the second interface 34 is located at a second point. The vertical distance between the first point and the intersection line is equal to the vertical distance between the second point and the intersection line.
[0043] Specifically, the first interface 33 is the interface connecting the transition pipe 30 and the first pipe 10, and the second interface 34 is the interface connecting the transition pipe 30 and the second pipe 20. The plane where the first interface 33 is located intersects the plane where the second interface 34 is located to form an intersection line. The intersection line is perpendicular to the first plane and intersects the first plane at a point, which is defined as the base point. The first transition line 311 intersects the plane where the first interface 33 is located at a first point, and the first transition line 311 intersects the plane where the second interface 34 is located at a second point. The perpendicular distance between the first point and the intersection line and the perpendicular distance between the second point and the intersection line are equal.
[0044] It is understandable that the first transition line 311 and the base point are both located on the first plane. The intersecting line is perpendicular to the first plane and intersects at the base point. Therefore, the line connecting the first point and the base point is perpendicular to the intersecting line, and the distance between the first point and the base point is the perpendicular distance between the first point and the intersecting line. Similarly, the line connecting the second point and the base point is perpendicular to the intersecting line, and the distance between the second point and the base point is the perpendicular distance between the second point and the intersecting line. That is, the distance between the first point and the base point and the distance between the second point and the base point are equal. If a circle is drawn with the base point as the center, both the first point and the second point are on this circle, but the first transition line 311 is located inside this circle. The arc between the first transition line 311 and the first point and the second point will be smoother, so that when the airflow passes through the first transition line 311, it will experience less resistance than the arc between the first point and the second point, which can further increase the airflow volume through the duct structure 100.
[0045] Please see Figure 2 and Figure 3 In some embodiments, both the first pipe 10 and the second pipe 20 are straight pipes or bends.
[0046] Combination Figure 2 For example, the first pipe 10 is a straight pipe, and the second pipe 20 is also a straight pipe. The axis of the first pipe 10 coincides with the first axis 331, and the axis of the second pipe 20 coincides with the second axis 341. The angle formed by the first axis 331 and the second axis 341 can be a right angle or an acute angle, which can smoothly guide the airflow to change the flow direction. The air duct structure 100 can be connected to the inside of the electronic device housing, and the heat inside the housing can be directly discharged through the air duct structure 100. The first pipe 10 and the second pipe 20 are both straight pipes, which can quickly discharge hot air and further improve the heat dissipation efficiency.
[0047] Combination Figure 3 In other embodiments, the first pipe 10 is a bend and the second pipe 20 is also a bend. The first pipe 10 can extend meanderingly along the direction of the first axis 331 to form a flow channel, and the second pipe 20 can extend meanderingly along the direction of the second axis 341 to form a flow channel. The air duct structure 100 can be set inside the housing of the electronic device, and cold air flows into the first pipe 10, the transition pipe 30 and the second pipe 20. The fact that the first pipe 10 and the second pipe 20 are both bends can increase the contact area between the outer wall of the pipe and the hot air inside the housing, increase the heat exchange efficiency, thereby removing more heat and further improving the heat dissipation efficiency.
[0048] Please see Figure 4 In some embodiments, one of the first pipe 10 and the second pipe 20 is a straight pipe and the other is a bent pipe.
[0049] In this embodiment, the first pipe 10 is a straight pipe, and the second pipe 20 is a bent pipe. The second pipe 20 is located inside the housing of the electronic device, while the first pipe 10 is located outside the housing. The second pipe 20 can meander along the direction of the second axis 341 to form a flow channel. Similarly, the fact that the second pipe 20 is bent can increase the contact area between the outer wall of the pipe and the hot air inside the housing, thereby increasing the heat exchange efficiency. The fact that the first pipe 10 is a straight pipe can reduce the length of the pipe outside the housing, enabling the heat inside the housing to be quickly discharged, further improving the heat dissipation efficiency.
[0050] In some other embodiments, the second pipe 20 may be a straight pipe and the first pipe 10 may be a bent pipe. The first pipe 10 may be located inside the housing, while the second pipe 20 may be located outside the housing, which can also improve heat dissipation efficiency.
[0051] In some embodiments, the first conduit 10 is integrally formed with the transition conduit 30 and the second conduit 20.
[0052] Optionally, during the manufacturing process of the duct structure 100, the first pipe 10, the transition pipe 30, and the second pipe 20 can be integrated into a single mold in one go, instead of being assembled by connecting or joining them together. This reduces the number of connection points in the duct structure 100, thereby reducing the risk of leakage and enhancing the overall structural integrity of the duct structure 100. Furthermore, reducing the number of connection points also reduces fluid resistance or eddies that may occur at the joints, and integrally molded pipes typically have higher fluid transmission efficiency.
[0053] Please see Figure 1 In some embodiments, the second transition surface 32 includes a second transition line 321 that extends from the first pipe 10 to the second pipe 20 in a curved manner, and the second transition line 321 is an arc-shaped line.
[0054] Optionally, after the airflow flows into the transition pipe 30, some of the airflow will flow along the second transition surface 32 of the transition pipe 30. The second transition line 321 is an arc-shaped line that bends and extends from the first interface 33 to the second interface 34. Thus, the second transition surface 32 with the second transition line 321 is an arc-shaped surface, so that the second transition surface 32 of the transition pipe 30 can also play the role of guiding the airflow to change its direction.
[0055] To further improve heat dissipation, please refer to [link / reference]. Figure 1 In some embodiments, the second transition line 321 is part of a single-arch cycloid.
[0056] It is understandable that when the curved surface that guides the airflow to change its direction extends along the direction of the cycloid curvature, the curved surface becomes smoother, and the turning angle of the airflow is smoother when it changes direction. This reduces the resistance that the airflow needs to overcome to change direction and increases the airflow volume passing through the curved surface. Therefore, the second transition line 321 is part of a single-arch cycloid, which allows the second transition surface 32 to extend along the direction of the cycloid curvature. This allows the airflow carrying heat to flow more smoothly along the second transition surface 32 of the transition pipe 30 to the second interface 34 and then to the outside, thereby improving the heat dissipation effect.
[0057] To ensure smoother airflow through transition duct 30, please refer to... Figure 1 In some embodiments, the second transition line 321 is parallel to the first transition line 311.
[0058] Specifically, the second transition line 321 is parallel to the first transition line 311, so that the bending direction of the second transition surface 32 is the same as the bending direction of the first transition surface 31. The airflow can flow more evenly in the transition pipe 30, which can further reduce the airflow resistance in the transition pipe 30 and make the airflow pass through the transition pipe 30 more smoothly.
[0059] To reduce the manufacturing difficulty of the transition pipe 30, in some embodiments, the second transition line 321 is a circular arc or an elliptical arc.
[0060] It should be noted that when the airflow flows into the transition pipe 30, it will blow directly onto the first transition surface 31 of the transition pipe 30. The first transition surface 31 mainly plays the role of guiding the airflow to change direction. Therefore, the resistance that the airflow needs to overcome when changing direction is mainly related to the first transition surface 31 of the transition pipe 30. The second transition surface 32 of the transition pipe 30 has a smaller impact on the airflow when changing direction.
[0061] Compared to complex cycloidal curves, circular and elliptical arcs are easier to precisely machine using existing mechanical or CNC machining equipment. Therefore, designing the second transition line 321 as a circular or elliptical arc can reduce the machining difficulty of the second transition surface 32 of the transition pipe 30, reduce manufacturing costs, and have little impact on the airflow resistance within the transition pipe 30.
[0062] On the other hand, this application also proposes an electronic device, which includes a housing and the air duct structure 100 as described above. The air duct structure 100 is connected to the inside of the housing and can directly exhaust the heat inside the housing to the outside, thereby dissipating heat from the electronic device.
[0063] The beneficial effects of the electronic equipment in this application are the same as those of the air duct structure 100 in this application, and will not be described again here.
[0064] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they 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. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An air duct structure characterized by, The wind channel structure comprises: a first pipe; a second pipe, the extending direction of the second pipe being arranged at an angle with the extending direction of the first pipe; a transition pipe, located between the first pipe and the second pipe, the two ends of the transition pipe being in communication with the first pipe and the second pipe respectively, the inner wall surface of the transition pipe comprising a first transition surface and a second transition surface arranged opposite to the first transition surface, the first transition surface being located outside the second transition surface; wherein the first transition surface comprises a first transition line extending in a curved manner from the first pipe to the second pipe, the first transition line being a part of a cycloid, the cycloid satisfying the following equations in an XY coordinate system: X=r(θ-sinθ) and Y=r(1-cosθ), X being the horizontal coordinate of the cycloid, Y being the vertical coordinate of the cycloid, r being the radius of a rolling circle forming the cycloid, θ being the angle at which the rolling circle rolls to form the cycloid, 0<θ≤2π.
2. The air duct structure according to claim 1, wherein The two ends of the transition pipe are respectively provided with a first interface and a second interface, the first interface being in communication with the first pipe, the second interface being in communication with the second pipe, the plane in which the first interface is located intersecting the plane in which the second interface is located to form an intersection line, the first transition line intersecting the plane in which the first interface is located at a first point, the first transition line intersecting the plane in which the second interface is located at a second point, the perpendicular distance between the first point and the intersection line being equal to the perpendicular distance between the second point and the intersection line.
3. The air duct structure according to claim 1, wherein The first pipe and the second pipe are both straight pipes or bent pipes.
4. The air duct structure according to claim 1, wherein One of the first pipe and the second pipe is a straight pipe, and the other is a bent pipe.
5. The air duct structure according to claim 1, wherein The first pipe, the transition pipe and the second pipe are integrally formed.
6. The air duct structure according to claim 1, wherein The second transition surface comprises a second transition line extending in a curved manner from the first pipe to the second pipe, the second transition line being an arc-shaped line.
7. The air duct structure according to claim 6, wherein The second transition line is a part of the cycloid.
8. The air duct structure according to claim 7, wherein The second transition line is parallel to the first transition line.
9. The air duct structure according to claim 6, wherein The second transition line is a circular arc line or an elliptical arc line.
10. An electronic device, comprising: The wind channel structure is in communication with the inside of a shell.