Flat tube, heat exchanger and vehicle

Abstract

The utility model relates to the technical field of air conditioners, in particular to a flat pipe, a heat exchanger and a vehicle. The flat pipe comprises a first plate body, and the first plate body is provided with a first turbulence body; the second plate body is provided with a second turbulent flow body; the first plate body and the second plate body are arranged at intervals in the Y direction to form a cavity, and the first turbulent flow body and the second turbulent flow body are oppositely arranged in the cavity in the Y direction and are arranged in a staggered mode in at least one of the X direction and the Z direction to form a fluid channel. By means of the technical scheme, the heat exchange area of liquid in the flat pipe in the flowing heat exchange process is increased, sensible heat of the liquid is fully utilized, the heat exchange coefficient is remarkably increased, and meanwhile the temperature uniformity is improved.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning technology, specifically to a flat tube, a heat exchanger, and a vehicle. Background Technology

[0002] Air conditioning is a key component in air conditioning systems, primarily responsible for heat exchange. In fresh air systems, the heat exchange core plays a dual role in heat recovery and humidity control, which is crucial for fresh air quality and energy conservation. Existing core heat exchangers, with their external structure design and simple U-shaped internal flow channels, suffer from poor heat exchange efficiency. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the first objective of the present invention is to provide a flat tube that allows for full utilization of the sensible heat of the liquid, thereby improving heat dissipation efficiency.

[0004] In some embodiments, a flat tube includes a first plate having a first turbulent fluid; a second plate having a second turbulent fluid; the first plate and the second plate are spaced apart along the Y direction to form a cavity, and the first turbulent fluid and the second turbulent fluid are arranged opposite each other along the Y direction in the cavity and staggered in at least one direction of the X and Z directions to form a fluid channel.

[0005] In some embodiments, there are multiple first and second disturbance fluids; the multiple first disturbance fluids are arranged along the X direction, and the multiple second disturbance fluids are arranged along the X direction.

[0006] In some embodiments, a plurality of first turbulent fluids are arranged along the X and Z directions, and a plurality of second turbulent fluids are arranged along the X and Z directions.

[0007] In some embodiments, the first and second turbulent fluids are offset in any direction, where any direction does not include the X and Z directions.

[0008] In some embodiments, both the first turbulent fluid and the second turbulent fluid are protrusions.

[0009] In some embodiments, the protrusion has a first plane along the Z direction, the first plane is rhomboid, and the side length of the first plane is D1.

[0010] In some embodiments, the first plane has a first diagonal and a second diagonal, the length of the first diagonal being less than the length of the second diagonal, and the first diagonal being along the Z direction.

[0011] In some embodiments, the length of the first diagonal is D2, and the ratio of D1 / D2 ranges from 0.8 to 1.2.

[0012] In some embodiments, the distance between the second diagonals of two adjacent first planes along the Z direction is D3, and the ratio of D2 / D3 ranges from 2 to 4.

[0013] In some embodiments, the distance between the first diagonals of two adjacent first planes along the X direction is D4, and the ratio of D2 / D4 ranges from 0.4 to 1.

[0014] In some embodiments, the length of the flat tube along the Z direction is W, the height of the flat tube along the Y direction is H, and the ratio of W to H ranges from 1:10 to 1:15.

[0015] In some embodiments, the first turbulent fluid and the second turbulent fluid are bent plates.

[0016] In some embodiments, a plurality of first turbulent fluids and a plurality of second turbulent fluids are arranged along the Z direction.

[0017] In some embodiments, the distance between two adjacent bent plates along the Z direction is W, the height of the flat tube along the Y direction is H, and the ratio of W to H ranges from 0.5 to 2.

[0018] In some embodiments, the bending plate includes multiple sets of bending portions, each bending portion including a first bending plate and a second bending plate, the first bending plate and the second bending plate being connected, the distance between the first bending plate and the second bending plate along the X direction being L, and the ratio of W to L ranging from 0.05 to 0.2.

[0019] In some embodiments, the thickness of the bent plate along the Z direction is F, and the ratio of F to W ranges from 0.05 to 0.3.

[0020] In some embodiments, the angle between the first bending plate and the X direction is θ, and the range of θ is 5-30°.

[0021] The second objective of this invention is to provide a radiator comprising the aforementioned flat tube.

[0022] In some embodiments, the device further includes a plurality of flat tubes arranged along the Y direction; a plurality of fins disposed between two adjacent flat tubes; and a manifold disposed at both ends of the flat tubes, with the flat tubes and the manifold connected.

[0023] The third objective of this invention is to provide a vehicle comprising a plurality of the aforementioned flat tubes and the aforementioned heat exchanger.

[0024] The present invention forms a flow channel inside a flat tube, and the flow channel is provided with multiple staggered protrusions or bends. The protrusions or bends increase the heat exchange area during the liquid flow heat exchange process, so that the sensible heat of the liquid is fully utilized, the heat transfer coefficient is significantly improved, and the heat exchange efficiency is enhanced.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof.

[0027] Figure 1 This is a schematic cross-sectional view of the flat tube in the Y direction according to the first embodiment of this disclosure;

[0028] Figure 2 This is a schematic cross-sectional view of the flat tube in the Z direction according to the first embodiment of this disclosure;

[0029] Figure 3 This is a partial cross-sectional view of the flat tube in the Z direction according to the first embodiment of this disclosure;

[0030] Figure 4 This is a partial top view of the flat tube in the Z direction according to the first embodiment of this disclosure;

[0031] Figure 5 This is a schematic diagram of the first and second plates in the Z direction of the flat tube according to the second embodiment of this disclosure;

[0032] Figure 6 This is a schematic diagram of the heat exchanger disclosed in this publication;

[0033] in,

[0034] Flat tube: 1; First plate: 11; Second plate: 12; First turbulent fluid: 13; Second turbulent fluid: 14;

[0035] First plane: 15; Side length of the first plane: D1; Length of the first diagonal: D2; Distance between the first diagonals: D4; Distance between the second diagonals: D3; First diagonal: 16; Second diagonal: 17.

[0036] Manifold: 2;

[0037] Fins: 3. Detailed Implementation

[0038] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0039] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the inner and outer contours of the corresponding parts themselves, and "far" and "near" refer to the outer and near dimensions relative to the comparative reference object. Furthermore, terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not have sequential or material significance. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0040] See Figure 1 This utility model discloses the first embodiment of a flat tube.

[0041] See Figure 1 The flat tube 1 includes a first plate 11, which is provided with a first turbulent fluid 13; and a second plate 12, which is provided with a second turbulent fluid 14. The first plate 11 and the second plate 12 are spaced apart along the Y direction to form a cavity. The first turbulent fluid 13 and the second turbulent fluid 14 are arranged opposite each other in the Y direction in the cavity and are staggered in at least one direction of the X and Z directions to form a fluid channel.

[0042] In this embodiment, the first plate 11 is provided with a first turbulent fluid 13; the second plate 12 is provided with a second turbulent fluid 14. It should be noted that the first turbulent fluid 13 and the second turbulent fluid 14 can be the same or different. Furthermore, they are staggered in at least one direction, the X and Z directions, to form a fluid channel. It should also be noted that the staggered arrangement of the first turbulent fluid 13 and the second turbulent fluid 14 can be completely staggered or partially staggered, depending on the actual application.

[0043] In this embodiment, the first turbulent fluid 13 and the second turbulent fluid 14 are staggered inside the flat tube 1, which increases the contact area with the liquid flow heat exchange process, making full use of the sensible heat of the liquid, significantly improving the heat transfer coefficient, and improving the heat dissipation efficiency.

[0044] See Figure 1 and Figure 2 There are multiple first disturbance fluids 13 and multiple second disturbance fluids 14; the multiple first disturbance fluids 13 are arranged along the X direction, and the multiple second disturbance fluids 14 are arranged along the X direction.

[0045] In this embodiment, a plurality of first disturbance fluids 13 are arranged along the X direction, and a plurality of second disturbance fluids 14 are arranged along the X direction. It should be noted that the plurality of first disturbance fluids 13 and the plurality of second disturbance fluids 14 can be arranged uniformly or non-uniformly along the X direction.

[0046] In this embodiment, compared to parallel arrangement, the staggered arrangement of multiple first turbulent fluids 13 and multiple second turbulent fluids 14 along the X direction can effectively turbulent the fluid and enhance the heat exchange effect.

[0047] See Figure 2 A plurality of first disturbance fluids 13 are arranged along the X direction and the Z direction, and a plurality of second disturbance fluids 14 are arranged along the X direction and the Z direction.

[0048] In this embodiment, the liquid flow channel inside the flat tube 1 is redesigned by arranging multiple first turbulent fluids 13 and multiple second turbulent fluids 14 along the X and Z directions, thereby enhancing its heat exchange capacity without significantly increasing pressure drop loss.

[0049] See Figure 4 The first turbulent fluid 13 and the second turbulent fluid 14 are staggered in any direction, wherein the any direction does not include the X direction and the Z direction.

[0050] In this embodiment, the first disruptive fluid 13 and the second disruptive fluid 14 are offset in any direction. It should be explained in detail that, unlike the previous description where the first disruptive fluid 13 and the second disruptive fluid 14 are offset in the X direction, Z direction, or both, this embodiment emphasizes that the direction in which the first disruptive fluid 13 and the second disruptive fluid 14 are offset is any direction other than the X direction, Z direction, or both. Figure 4 As shown, the projection of the second turbulent fluid 14 on the first plate 11 is in the same direction as the arrangement of the first turbulent fluid 13.

[0051] This embodiment demonstrates multiple possibilities for the misaligned orientation of the first turbulent fluid 13 and the second turbulent fluid 14, which can increase fluid turbulence, make fluid mixing more uniform, and improve the fluid's heat dissipation efficiency.

[0052] See Figure 1 and Figure 2 Both the first turbulent fluid 13 and the second turbulent fluid 14 are protrusions.

[0053] In this embodiment, both the first turbulent fluid 13 and the second turbulent fluid 14 are protrusions. It should be noted in detail that the protrusion 11 can be, but is not limited to, a triangular rib, an elliptical rib, or a teardrop-shaped rib.

[0054] See Figure 3 The protrusion has a first plane 15 along the Z direction. The first plane 15 is rhomboid and the side length of the first plane 15 is D1.

[0055] In this embodiment, the first plane 15 is rhomboid. It should be noted in detail that the side lengths of the rhomboid are equal.

[0056] In this embodiment, based on the heat transfer characteristics of liquid flow on a solid surface, the boundary layer development section near the inlet is relatively thin due to the thinner boundary layer between the wall temperature and the mainstream liquid temperature. According to Fourier's law of thermal conductivity, the heat flux density here is higher than that of the stabilized boundary layer. Therefore, by adding solid thermal conductive ribs, the boundary layer can continue to develop as the liquid flows and impacts the solid surface, resulting in a higher local heat flux density. This enhances the heat transfer process between the liquid and the solid, fully utilizes the sensible heat of the liquid, and improves the heat transfer coefficient. Simultaneously, due to the increased heat transfer coefficient, the solid temperature can approach the upward trend of the liquid temperature. Since the liquid itself has a high specific heat capacity, the temperature uniformity of the solid surface is improved, and the uniformity of the air outlet temperature on the air side of the heat exchanger is also improved.

[0057] See Figure 3 The first plane 15 has a first diagonal 16 and a second diagonal 17, the length of the first diagonal 16 is less than the length of the second diagonal 17, and the first diagonal 16 is along the Z direction.

[0058] In this embodiment, the length of the first diagonal 16 is less than the length of the second diagonal 17, and the diamond-shaped tip is aligned with the inlet and outlet. This helps to reduce the pressure drop loss caused by the increased heat exchange area, ensuring that the pressure drop loss in the internal flow channel of the cold core is not significantly higher than that in a smooth flow channel. During liquid convection heat transfer, increasing the contact area between the liquid and solid and enhancing turbulence leads to an increase in pressure drop loss. To suppress this defect, this invention designs the protrusion to have a width less than its length, and aligns the diamond-shaped tip with the inlet and outlet, ensuring that the pressure drop loss in the internal flow channel with the protrusion is not significantly higher than that in a smooth flow channel.

[0059] See Figure 3 The length of the first diagonal is D2, and the ratio of D1 / D2 ranges from 0.8 to 1.2.

[0060] See Figure 3 The distance between the second diagonals 17 of two adjacent first planes 15 along the Z direction is D3, and the ratio of D2 / D3 is in the range of 2-4.

[0061] See Figure 3 The distance between the first diagonals 16 of two adjacent first planes 15 along the X direction is D4, and the ratio of D2 / D4 is in the range of 0.4-1.

[0062] See Figure 1 and Figure 3 The length of the flat tube 1 along the Z direction is W, and the height of the flat tube along the Y direction is H. The ratio of W to H is in the range of 1:10 to 1:15.

[0063] See Figure 5 The first turbulent fluid 13 and the second turbulent fluid 14 are bent plates.

[0064] In this embodiment, a high-intensity longitudinal vortex is generated in the fluid by the induction of the bending plate. Since the rotation direction of the vortex is parallel to the tube axis, the mixing degree between the near-wall region and the core flow region inside the tube is improved, the development of the boundary layer is disrupted, the heat flux density of the tube wall is increased, and thus the heat transfer rate is improved.

[0065] See Figure 5 The plurality of first turbulent fluids and the plurality of second turbulent fluids are arranged along the Z direction.

[0066] See Figure 5 The distance between two adjacent bending plates along the Z direction is W, the height of the flat tube along the Y direction is H, and the ratio of W to H is in the range of 0.5-2.

[0067] See Figure 5 The bending plate includes multiple sets of bending portions, each bending portion including a first bending plate and a second bending plate. The first bending plate and the second bending plate are connected. The distance between the first bending plate and the second bending plate along the X direction is L. The ratio of W to L ranges from 0.05 to 0.2.

[0068] See Figure 5 The thickness of the bent plate along the Z direction is F, and the ratio of F to W is in the range of 0.05-0.3.

[0069] See Figure 5 The angle between the first bending plate and the X direction is θ, and the range of θ is 5-30°.

[0070] This utility model embodiment also provides a heat exchanger, including the flat tube 1 described in any of the above embodiments, which facilitates improving the heat transfer coefficient and increasing the heat transfer efficiency.

[0071] See Figure 6 The heat exchanger includes: a plurality of flat tubes, the plurality of flat tubes being arranged along the Y direction;

[0072] Multiple fins 3 are disposed between two adjacent flat tubes, and a manifold is disposed at both ends of the flat tubes, and the flat tubes and the manifold are connected.

[0073] In this embodiment, the heat exchanger includes a plurality of fins 3. It should be noted that the shape of the fins 3 is not limited here.

[0074] In this embodiment, the fins increase the total heat exchange area of ​​the heat exchanger, thereby improving the heat exchange efficiency; they have high thermal conductivity, which helps to transfer heat from one fluid to another more quickly; they can also disrupt the laminar flow of the fluid and increase turbulence, which helps to improve the efficiency of heat exchange.

[0075] This utility model embodiment also provides a vehicle, including the flat tube and heat exchanger described in any of the above embodiments, which facilitates improving the heat transfer coefficient and increasing the heat transfer efficiency.

[0076] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0077] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0078] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A flat tube, characterized in that, include: A first plate, wherein a first turbulent fluid is provided on the first plate; The second plate is provided with a second turbulent fluid. The first plate and the second plate are spaced apart along the Y direction to form a cavity. The first fluid disturbance and the second fluid disturbance are arranged opposite each other in the Y direction within the cavity and are staggered in at least one direction of the X and Z directions to form a fluid channel.

2. The flat tube according to claim 1, characterized in that: There are multiple first and second disturbance fluids; A plurality of the first disturbance fluids are arranged along the X direction, and a plurality of the second disturbance fluids are arranged along the X direction.

3. The flat tube according to claim 1, characterized in that: A plurality of first disturbance fluids are arranged along the X direction and the Z direction, and a plurality of second disturbance fluids are arranged along the X direction and the Z direction.

4. The flat tube according to claim 1, characterized in that: The first and second turbulent fluids are offset in any direction, where the "any direction" does not include the X and Z directions.

5. The flat tube according to claim 1, characterized in that: Both the first and second turbulent fluids are protrusions.

6. The flat tube according to claim 5, characterized in that, include: The protrusion has a first plane along the Z direction. The first plane is rhomboid and has a side length of D1.

7. The flat tube according to claim 6, characterized in that, include: The first plane has a first diagonal and a second diagonal, the length of the first diagonal is less than the length of the second diagonal, and the first diagonal is along the Z direction.

8. The flat tube according to claim 7, characterized in that, include: The length of the first diagonal is D2, and the ratio of D1 / D2 ranges from 0.8 to 1.

2.

9. The flat tube according to claim 8, characterized in that, include: The distance between the second diagonals of two adjacent first planes along the Z direction is D3, and the ratio of D2 / D3 is in the range of 2-4.

10. The flat tube according to claim 8, characterized in that, include: The distance between the first diagonals of two adjacent first planes along the X direction is D4, and the ratio of D2 / D4 ranges from 0.4 to 1.

11. The flat tube according to claim 1, characterized in that, include: The length of the flat tube along the Z direction is W, the height of the flat tube along the Y direction is H, and the ratio of W to H is in the range of 1:10 to 1:

15.

12. The flat tube according to claim 1, characterized in that: The first and second turbulent fluids are bent plates.

13. The flat tube according to claim 1, characterized in that: The plurality of first turbulent fluids and the plurality of second turbulent fluids are arranged along the Z direction.

14. The flat tube according to claim 12, characterized in that: The distance between two adjacent bending plates along the Z direction is W, the height of the flat tube along the Y direction is H, and the ratio of W to H is in the range of 0.5-2.

15. The flat tube according to claim 12, characterized in that: The bending plate includes multiple sets of bending sections, each bending section including a first bending plate and a second bending plate. The first bending plate and the second bending plate are connected. The distance between the first bending plate and the second bending plate along the X direction is L. The ratio of W to L ranges from 0.05 to 0.

2.

16. The flat tube according to claim 12, characterized in that: The thickness of the bent plate along the Z direction is F, and the ratio of F to W is in the range of 0.05-0.

3.

17. The flat tube according to claim 15, characterized in that: The angle between the first bending plate and the X direction is θ, and the range of θ is 5-30°.

18. A heat exchanger comprising the flat tube as described in any one of claims 1-17.

19. The heat exchanger according to claim 18, characterized in that, Also includes: A plurality of the flat tubes, the plurality of the flat tubes being arranged along the Y direction; Multiple fins, wherein the fins are disposed between two adjacent flat tubes; A manifold is provided at both ends of the flat tube, and the flat tube and the manifold are connected.

20. A vehicle, characterized in that: It includes the flat tube as described in any one of claims 1-17 and the heat exchanger as described in any one of claims 18-19.

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