Multi-channel extrusion flat tube and automobile
By designing a multi-channel extruded flat tube and using reinforcing ribs to divide it into multiple channels, the problem of low heat exchange efficiency in traditional flat tubes is solved, achieving more efficient heat exchange and improving the performance of automotive air conditioning and battery thermal management systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-03-10
AI Technical Summary
The single-hole folded flat tube used in traditional automotive air conditioning systems has low heat exchange efficiency and limited contact area between the coolant and the hole wall, resulting in insufficient heat exchange and affecting overall performance.
A multi-channel extruded flat tube is designed, comprising an integrally formed flat part and an arc-shaped part. Multiple reinforcing ribs divide the accommodating chamber into multiple channels, increasing the contact area between the coolant and the wall surface, and optimizing the channel ratio and shape to improve heat exchange efficiency.
It improves heat exchange efficiency, increases the contact area between the coolant and the wall, and enhances the overall performance of the automotive air conditioning system and the heat exchange capacity of the battery thermal management system.
Smart Images
Figure CN223985631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat exchange technical field especially relates to a kind of multi-channel extruded flat tube and automobile. BACKGROUND
[0002] In automobile air conditioning system, parallel flow heat exchanger with cooling liquid as heat exchange medium has wide application.In traditional technology, the flat tube used in this kind of heat exchanger is mostly single-hole folded flat tube.This kind of flat tube has obvious shortcomings, the most prominent of which is that the heat exchange efficiency is low, cannot efficiently realize heat exchange, and further affect the overall performance of automobile air conditioner.
[0003] In addition, the hole width of the flat tube in traditional technology is greater than the hole height, and this structure leads to limited contact area between cooling liquid and hole wall when cooling liquid flows in the flat tube, and the heat exchange is insufficient, which further reduces the heat exchange efficiency.
[0004] Therefore, it is urgent to design a kind of multi-channel extruded flat tube and automobile to solve the above technical problems. INVENTION CONTENTS
[0005] The first purpose of the utility model is to provide a kind of multi-channel extruded flat tube, to improve heat exchange efficiency.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] The utility model provides a kind of multi-channel extruded flat tube, comprising:
[0008] Body, the body includes integrally formed plane piece and cambered surface piece, first accommodating chamber is formed in the plane piece, second accommodating chamber is formed in the cambered surface piece;
[0009] Multiple first reinforcing ribs, multiple first reinforcing ribs separate the first accommodating chamber into multiple first channels for cooling liquid to flow;
[0010] Multiple second reinforcing ribs, multiple second reinforcing ribs separate the second accommodating chamber into multiple second channels for cooling liquid to flow, the cross-sectional area of the first channel is greater than the cross-sectional area of the second channel;
[0011] Along first direction, the width of the first channel is C;Along second direction, the height of the first channel is D, C / D is set in the range of 0.25-0.35, the first direction and the second direction are perpendicular to each other.
[0012] As an optional technical scheme of a kind of multi-channel extruded flat tube, multiple first reinforcing ribs are all parallel and equally spaced along first direction, and multiple second reinforcing ribs are all parallel and equally spaced along first direction.
[0013] As an alternative technical solution for multi-channel extruded flat tubes, the length of the second reinforcing rib is less than the length of the first reinforcing rib along the second direction.
[0014] As an optional technical solution for multi-channel extruded flat tubes, the body is formed by extruding aluminum profiles to form a planar part having multiple first channels and an arc-shaped part having multiple second channels.
[0015] As an optional technical solution for multi-channel extruded flat tubes, the thickness T1 of the first reinforcing rib and the thickness T2 of the second reinforcing rib are equal, and the thickness T1 of the first reinforcing rib and the thickness T2 of the second reinforcing rib are both set in the range of 0.18mm-0.25mm.
[0016] As an optional technical solution for multi-channel extruded flat tubes, the thickness T3 of the planar component and the thickness T4 of the arc-shaped component are equal, and both the thickness T3 of the planar component and the thickness T4 of the arc-shaped component are set within the range of 0.18mm-0.35mm.
[0017] As an optional technical solution for multi-channel extruded flat tubes, the first channel has a rectangular cross-section, and the second channel has a triangular or trapezoidal cross-section.
[0018] As an optional technical solution for multi-channel extruded flat tubes, the arc-shaped components are configured as two, with the two arc-shaped components located on both sides of the planar component along a first direction, and the two arc-shaped components are symmetrically arranged about the axis of the planar component.
[0019] As an alternative technical solution for multi-channel extruded flat tubes, the first channel and / or the second channel are provided with turbulence protrusions, which are configured to enhance the turbulence effect of the coolant.
[0020] The second objective of this invention is to provide a car in which the battery thermal management system has a high heat exchange efficiency.
[0021] To achieve this objective, the present invention adopts the following technical solution:
[0022] This utility model provides a car, which includes a heat exchange device and a battery thermal management system. The heat exchange device is provided with a multi-channel extruded flat tube as described in any of the above optional technical solutions.
[0023] The beneficial effects of this utility model include at least the following:
[0024] This invention provides a multi-channel extruded flat tube, comprising a body, multiple first reinforcing ribs, and multiple second reinforcing ribs. The body includes an integrally formed flat component and an arc-shaped component. A first receiving chamber is formed within the flat component, and a second receiving chamber is formed within the arc-shaped component. The multiple first reinforcing ribs divide the first receiving chamber into multiple first channels for coolant flow; the multiple second reinforcing ribs divide the second receiving chamber into multiple second channels for coolant flow. The arrangement of multiple first and second channels increases the contact area between the body and the coolant, thereby improving heat exchange efficiency.
[0025] Meanwhile, the width of the first channel is C along the first direction; the height of the first channel is D along the second direction, and the ratio of C / D is set within the range of 0.25-0.35. The first direction and the second direction are perpendicular to each other. This allows for the arrangement of as many first channels as possible within the limited size of the first accommodating cavity, thereby increasing the contact area between the coolant and the first reinforcing rib (the wall of the first channel), resulting in more thorough heat exchange and thus improving heat exchange efficiency.
[0026] This invention also provides a car in which the battery thermal management system has a high heat exchange efficiency. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0028] Fig. 1 This is a schematic diagram of the structure of the multi-channel extruded flat tube provided in this embodiment of the utility model;
[0029] Fig. 2 This is a cross-sectional view of the multi-channel extruded flat tube provided in this embodiment of the utility model.
[0030] Figure Labels
[0031] 10. Body; 11. Flat component; 12. Curved component; 13. First channel; 14. Second channel; 20. First reinforcing rib; 30. Second reinforcing rib. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0037] 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.
[0038] 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.
[0039] This embodiment provides a multi-channel extruded flat tube to improve heat exchange efficiency.
[0040] like Figs. 1-2 As shown, the multi-channel extruded flat tube mainly includes a body 10, multiple first reinforcing ribs 20, and multiple second reinforcing ribs 30. The body 10 includes an integrally formed flat part 11 and an arc-shaped part 12. A first receiving chamber is formed within the flat part 11, and a second receiving chamber is formed within the arc-shaped part 12. The multiple first reinforcing ribs 20 divide the first receiving chamber into multiple first channels 13 for coolant flow; the multiple second reinforcing ribs 30 divide the second receiving chamber into multiple second channels 14 for coolant flow. The arrangement of multiple first channels 13 and multiple second channels 14 increases the contact area between the body 10 and the coolant, thereby improving heat exchange efficiency.
[0041] In this embodiment, the width of the first channel 13 along the first direction is C; the height of the first channel 13 along the second direction is D, where C / D = 0.25-0.35. In other words, the value of C / D is set within the range of 0.25-0.35. The first and second directions are perpendicular to each other. This allows for the arrangement of as many first channels 13 as possible within the limited-size first accommodating cavity, thereby increasing the contact area between the coolant and the first reinforcing rib 20 (the wall surface of the first channel 13), resulting in more thorough heat exchange and improved heat exchange efficiency. The first direction is... Fig. 2 The X-axis direction in the diagram, the second direction is... Fig. 2 The Y-axis direction in the diagram.
[0042] Optionally, the C / D value in this embodiment can be set to 0.25, 0.30, 0.35, etc.
[0043] When C / D is less than 0.25, the first channel 13 is too tall and too narrow, which significantly increases the flow resistance of the coolant, requiring a more powerful pump to drive the coolant circulation and thus increasing energy consumption. Simultaneously, the narrow first channel 13 is more prone to blockage by impurities, especially when the coolant contains particulate matter, increasing the failure rate. Furthermore, the tall and narrow first channel 13 places extremely high demands on mold precision. During the extrusion process of the body 10, uneven filling of the metal material is likely to occur, leading to increased roughness of the inner wall of the first channel 13 (such as burrs and dents), thereby reducing the yield.
[0044] When C / D is greater than 0.35, the width of the first channel 13 is too large, reducing the number of first channels 13 within the limited first accommodating space. This reduces the contact area between the coolant and the wall (first reinforcing rib 20) of the first channel 13, thereby decreasing turbulence and heat transfer capacity. Furthermore, a wide and flat first channel 13 means a reduced number of first reinforcing ribs 20, making it more prone to deformation or even breakage under high pressure or vibration conditions, thus shortening the service life of the multi-channel extruded flat tube.
[0045] Therefore, setting the C / D ratio between 0.25 and 0.35 can not only increase the heat exchange area, improve heat exchange efficiency, and extend service life, but also save energy and improve product yield.
[0046] Optionally, in this embodiment, two arc-shaped components 12 are provided. Along the first direction, the two arc-shaped components 12 are located on both sides of the planar component 11, and the two arc-shaped components 12 are symmetrically arranged about the axis of the planar component 11. In this embodiment, the cross-sectional area of the first channel 13 is larger than that of the second channel 14, which allows more coolant to flow into the planar component 11, improving the heat exchange efficiency between the planar component 11 and the external air. At the same time, the larger cross-sectional area of the first channel 13 reduces the flow resistance in the mainstream area of the coolant, while the smaller cross-sectional area of the second channel 14 on both sides of the body 10 enhances the heat exchange efficiency by locally accelerating the formation of turbulence in the coolant.
[0047] Optionally, in this embodiment, the body 10 is formed by extruding an aluminum profile into a flat part 11 having multiple first channels 13 and an arc-shaped part 12 having multiple second channels 14. Furthermore, the body 10 in this embodiment is composed of two arc-shaped parts 12 and a flat part 11 located between the two arc-shaped parts 12. During the extrusion process, when the metal material flows within the mold, the rounded edge of the arc-shaped part 12 can reduce the resistance to the flow of the metal material, avoiding localized stress concentration and material accumulation problems caused by right angles or sharp angles. Compared with the prior art, the folded flat tube in the prior art is prone to poor quality at the necking section due to right-angle deformation during stamping, while the rounded edge design of the arc-shaped part 12 in this embodiment can improve the uniformity of material filling the mold, reduce molding defects, and improve product yield.
[0048] Furthermore, the streamlined structure of the curved component 12 reduces resistance to coolant flow and improves heat exchange efficiency. Additionally, the arc-shaped structure of the curved component 12 avoids localized wear caused by fluid impact at right angles.
[0049] The multi-channel extruded flat tube in this embodiment is manufactured using extruded aluminum profiles. Compared to the traditional method of folding flat tubes, this significantly reduces the mold cost of folded flat tubes, facilitating product market promotion and widespread adoption. It should be noted that the extrusion process and steps in this embodiment are existing technologies; therefore, their process parameters will not be elaborated here.
[0050] like Figs. 1-2 As shown, in this embodiment, multiple first reinforcing ribs 20 are arranged parallel to each other and at equal intervals along the first direction, and multiple second reinforcing ribs 30 are arranged parallel to each other and at equal intervals along the first direction. This ensures that the spacing between the multiple first channels 13 and the spacing between the multiple second channels 14 are equal, improving the uniformity of coolant flow and preventing coolant accumulation or insufficient coolant in local areas of the body 10.
[0051] Furthermore, along the second direction, the length of the second reinforcing rib 30 is less than the length of the first reinforcing rib 20, thereby making the cross-sectional area of the formed second channel 14 smaller than the cross-sectional area of the first channel 13.
[0052] In this embodiment, the arrangement of the first reinforcing rib 20 and the second reinforcing rib 30 not only forms the corresponding first channel 13 and second channel 14, but also improves the mechanical strength of the multi-channel extruded flat tube, prevents the body 10 from denting, and extends the service life.
[0053] like Fig. 2As shown, in this embodiment, the thickness T1 of the first reinforcing rib 20 and the thickness T2 of the second reinforcing rib 30 are equal, which facilitates extrusion molding and improves processing efficiency. Furthermore, the thickness T1 of the first reinforcing rib 20 and the thickness T2 of the second reinforcing rib 30 are both set within the range of 0.18mm-0.25mm. For example, they can be set to values such as 0.18mm, 0.20mm, and 0.25mm.
[0054] like Fig. 2 As shown, in this embodiment, the thickness T3 of the planar part 11 and the thickness T4 of the curved part 12 are equal, which facilitates extrusion molding and improves processing efficiency. Furthermore, the thickness T3 of the planar part 11 and the thickness T4 of the curved part 12 are both set within the range of 0.18mm-0.35mm, for example, they can be set to values such as 0.18mm, 0.20mm, and 0.35mm.
[0055] Optionally, in this embodiment, the first channel 13 has a rectangular cross-section, and the second channel 14 has a triangular or trapezoidal cross-section. Of course, operators can flexibly set the shapes of the first channel 13 and the second channel 14 according to actual needs.
[0056] Optionally, in this embodiment, the first channel 13 and / or the second channel 14 are provided with turbulence protrusions (not shown in the figure), which are configured to enhance the turbulence effect of the coolant. Specifically, the turbulence protrusions interfere with the laminar flow state of the coolant, increasing the contact frequency and angle between the coolant and the walls of the first channel 13 and / or the second channel 14, thereby disrupting the laminar boundary layer with high thermal resistance and improving the heat transfer effect. At the same time, the turbulence protrusions also increase the actual surface area of the walls of the first channel 13 and the second channel 14, indirectly increasing the effective heat transfer area.
[0057] Optionally, multiple turbulence protrusions can be configured, and these protrusions can be set at equal or unequal intervals. The turbulence protrusions can be configured as convex hull structures.
[0058] The heat exchange process of the multi-channel extruded flat tube in this embodiment is as follows: a coolant with a lower temperature flows in the first channel 13 and the second channel 14. During the flow, the coolant transfers the cooling capacity to the wall of the body 10, and then the wall of the body 10 transfers it to the surrounding air, thereby achieving the cooling of the surrounding air and achieving the purpose of refrigeration.
[0059] like Fig. 2As shown, by way of example, the specifications of the multi-channel extruded flat tube in this embodiment can be set with a width A of 17.75 mm and a thickness B of 2.65 mm; the thickness T1 of the first reinforcing rib 20 and the thickness T2 of the second reinforcing rib 30 are both 0.18 mm, the thickness T3 of the flat part 11 is 0.22 mm or 0.23 mm and the thickness T4 of the curved part 12 is 0.3 mm or 0.35 mm, and the width C of the first channel 13 is 0.64 mm.
[0060] This embodiment also provides a vehicle, which includes a heat exchange device and a battery thermal management system. The heat exchange device is integrated into the battery thermal management system. The heat exchange device is provided with the aforementioned multi-channel extruded flat tube. For example, the heat exchange device can be an evaporator or a condenser, etc.
[0061] Because the vehicle has the aforementioned multi-channel extruded flat tube, the battery thermal management system in the vehicle has a high heat exchange efficiency.
[0062] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
[0063] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that 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.
Claims
1. Multi-channel extruded flat tube, characterized in that include: The body (10) includes an integrally formed planar part (11) and an arc-shaped part (12), wherein a first receiving chamber is formed in the planar part (11) and a second receiving chamber is formed in the arc-shaped part (12); Multiple first reinforcing ribs (20) divide the first accommodating chamber into multiple first channels (13) for coolant flow; Multiple second reinforcing ribs (30) divide the second accommodating chamber into multiple second channels (14) for coolant flow, wherein the cross-sectional area of the first channel (13) is larger than the cross-sectional area of the second channel (14); Along the first direction, the width of the first channel (13) is C; along the second direction, the height of the first channel (13) is D, and C / D is set in the range of 0.25-0.
35. The first direction is perpendicular to the second direction.
2. The multi-pass extruded tube of claim 1 wherein, The plurality of first reinforcing ribs (20) are arranged parallel to each other and at equal intervals along the first direction, and the plurality of second reinforcing ribs (30) are arranged parallel to each other and at equal intervals along the first direction.
3. The multi-pass extruded tube of claim 2, wherein, Along the second direction, the length of the second reinforcing rib (30) is less than the length of the first reinforcing rib (20).
4. The multi-pass extruded tube of claim 1 wherein, The body (10) is formed by extruding aluminum profiles to form the planar part (11) having a plurality of first channels (13) and the arcuate part (12) having a plurality of second channels (14).
5. The multi-pass extruded tube of claim 1 wherein, The thickness T1 of the first reinforcing rib (20) and the thickness T2 of the second reinforcing rib (30) are equal, and the thickness T1 of the first reinforcing rib (20) and the thickness T2 of the second reinforcing rib (30) are both set in the range of 0.18mm-0.25mm.
6. The multi-pass extruded tube of claim 1 wherein, The thickness T3 of the planar component (11) and the thickness T4 of the arc-shaped component (12) are equal, and the thickness T3 of the planar component (11) and the thickness T4 of the arc-shaped component (12) are both set in the range of 0.18mm-0.35mm.
7. The multi-pass extruded tube of claim 1 wherein, The first channel (13) has a rectangular cross-section, and the second channel (14) has a triangular or trapezoidal cross-section.
8. The multi-pass extruded tube of claim 1 wherein, The two arc-shaped components (12) are arranged in a first direction, with the two arc-shaped components (12) located on both sides of the planar component (11), and the two arc-shaped components (12) are symmetrical about the axis of the planar component (11).
9. The multi-pass extruded tube of claim 1 wherein, Turbulence protrusions are provided in the first channel (13) and / or the second channel (14), and the turbulence protrusions are configured to enhance the turbulence effect of the coolant.
10. An automobile characterized by The vehicle includes a heat exchange device and a battery thermal management system, wherein the heat exchange device is integrated into the battery thermal management system, and the heat exchange device is provided with a multi-channel extruded flat tube as described in any one of claims 1-9.