Fin unit, heat exchange fin and heat exchanger

Abstract

The invention provides a fin unit, a heat exchange fin and a heat exchanger, and relates to the technical field of heat exchangers. Each fin unit comprises a first bottom plate, a second bottom plate, a first spoiler, a second spoiler, a third spoiler and a fourth spoiler; the first bottom plate, the first spoiler, the second spoiler and the second bottom plate are sequentially connected, the second bottom plate, the third spoiler, the fourth spoiler and the second bottom plate are sequentially connected, and projections of the second spoiler and the third spoiler on a first plane are arranged in a crossed mode. The inclination angle of at least one of the first spoiler, the second spoiler, the third spoiler and the fourth spoiler is smaller than that of the other spoilers, so that fluid can strongly flow on the spoilers with smaller inclination angles in the flowing process of the fluid in the heat exchange fins; therefore, the fluid can impact the tops and the bottoms of the fin units more strongly, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of heat exchange technology, and in particular to a fin unit, a heat exchange fin and a heat exchanger. Background Art

[0002] Due to its compact structure and high heat exchange efficiency, heat exchangers have been widely used in air separation equipment, petrochemical industry, refrigeration and cryogenic fields, automobile and aviation industries, etc. The core component of heat exchangers is fins, such as staggered fins. However, the single unit structure of existing staggered fins is unreasonable, and the adjacent two teeth are exactly the same. When the fluid flows in this fin, the fluid will be subject to greater flow resistance, thereby reducing the heat exchange performance of the heat exchanger. Summary of the invention

[0003] The present invention provides a fin unit, a heat exchange fin and a heat exchanger, which can enable a fluid to flow more strongly on a spoiler with a smaller inclination angle, thereby enabling the fluid to impact the top and bottom of the fin unit more strongly, thereby improving the heat exchange efficiency.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a fin unit, comprising a first bottom plate, a second bottom plate, a first spoiler, a second spoiler, a third spoiler and a fourth spoiler;

[0006] The first bottom plate, the first spoiler, the second spoiler and the second bottom plate are connected in sequence, and the first spoiler and the second spoiler are arranged at an angle;

[0007] The first bottom plate, the third spoiler plate, the fourth spoiler plate and the second bottom plate are connected in sequence, and the third spoiler plate and the fourth spoiler plate are arranged at an angle;

[0008] A first plane and a second plane are defined, the first bottom plate and the second bottom plate are located on the second plane, the first plane and the second plane are perpendicular, and the projections of the second spoiler and the third spoiler on the first plane are arranged to intersect;

[0009] The angle between the first spoiler and the second plane is a first angle, the angle between the second spoiler and the second plane is a second angle, the angle between the third spoiler and the second plane is a third angle, and the angle between the fourth spoiler and the second plane is a fourth angle;

[0010] Wherein, the first angle is greater than or less than the second angle; and / or, the third angle is greater than or less than the fourth angle.

[0011] In an optional embodiment, the first angle is greater than or less than the fourth angle.

[0012] In an optional embodiment, the second angle is greater than or less than the third angle.

[0013] In an optional embodiment, the width of the first spoiler is a first width, the width of the fourth spoiler is a second width, and the first width is greater than or less than the second width;

[0014] And / or, the width of the second spoiler is the third width, the width of the third spoiler is the fourth width, and the third width is greater than or less than the fourth width.

[0015] In an optional embodiment, the fin unit also includes a fifth spoiler and a sixth spoiler, wherein two ends of the fifth spoiler are respectively connected to an end of the first spoiler away from the first bottom plate and an end of the second spoiler away from the second bottom plate, and two ends of the sixth spoiler are respectively connected to an end of the third spoiler away from the first bottom plate and an end of the fourth spoiler away from the second bottom plate.

[0016] In an optional embodiment, the fifth spoiler and the sixth spoiler are located in a third plane parallel to the second plane, the distance between the third plane and the second plane is set to Fh, the maximum distance between the first bottom plate and the second bottom plate is set to Fp, the first angle is set to θ1, and the second angle is set to θ2, then the following formula is satisfied:

[0017] arctan(Fh / Fp)<θ2<θ1<90°.

[0018] In a second aspect, the present invention provides a heat exchange fin, comprising a fin unit as described in any one of the aforementioned embodiments, wherein a plurality of the fin units are connected via the first bottom plate or the second bottom plate.

[0019] In an optional embodiment, a first direction and a second direction are defined, the first direction and the second direction are perpendicular, the second direction is the main flow direction of the parallel fluid, the number of the fin units is multiple, and the multiple fin units are distributed in an array along the first direction and the second direction;

[0020] And along the first direction, the first bottom plate of any one of the fin units is connected to the second bottom plate of another adjacent fin unit;

[0021] Along the second direction, the first bottom plate of any one of the fin units is connected to the first bottom plate of another adjacent fin unit, and the second bottom plate of any one of the fin units is connected to the second bottom plate of another adjacent fin unit.

[0022] In an optional embodiment, the heat exchange fin further comprises a plurality of connection units, and the number of the fin units is multiple;

[0023] Along the first direction, the connecting unit is arranged between two adjacent fin units, and the two adjacent fin units are inverted with each other;

[0024] Along the second direction, the first bottom plate of any one of the fin units is connected to the first bottom plate of another adjacent fin unit, and the second bottom plate of any one of the fin units is connected to the second bottom plate of another adjacent fin unit;

[0025] A first direction and a second direction are defined, the first direction and the second direction are perpendicular, the second direction is the main flow direction of the parallel fluid, and the plurality of fin units and the plurality of connecting units are distributed in an array along the first direction and the second direction.

[0026] In an optional embodiment, the connection unit includes a first connection plate, a second connection plate, a third connection plate and a fourth connection plate;

[0027] The first connecting plate and the fourth connecting plate are arranged in parallel, the two ends of the second connecting plate are respectively connected to the first connecting plate and the fourth connecting plate, the two ends of the third connecting plate are respectively connected to the first connecting plate and the fourth connecting plate, the first connecting plate is connected to the first bottom plate of the adjacent fin unit, and the fourth connecting plate is connected to the second bottom plate of another adjacent fin unit.

[0028] In a second aspect, the present invention provides a heat exchanger, comprising the heat exchange fins as described in any one of the aforementioned embodiments, the heat exchanger also comprising a plurality of heat exchange plates, the plurality of heat exchange plates are stacked, and the heat exchange fins are arranged between at least one group of adjacent heat exchange plates.

[0029] The beneficial effects of the fin unit, heat exchange fin and heat exchanger provided by the embodiments of the present invention include: by making the first angle not equal to the second angle, or making the third angle not equal to the fourth angle, or making the first angle not equal to the second angle and the third angle not equal to the fourth angle at the same time, at least one of the first spoiler, the second spoiler, the third spoiler and the fourth spoiler has a smaller inclination angle relative to the other spoilers, so that during the flow of the fluid through the heat exchange fin, the fluid can have a stronger flow on the spoiler with a smaller inclination angle, so that the fluid can more strongly impact the top and bottom of the fin unit, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic structural diagram of a first embodiment of a heat exchange fin provided in an embodiment of the present invention;

[0032] Figure 2 One of the structural schematic diagrams of the first embodiment of the fin unit provided in the embodiment of the present invention;

[0033] Figure 3 The second structural schematic diagram of the first embodiment of the fin unit provided by the embodiment of the present invention;

[0034] Figure 4 A schematic diagram of a conventional fin operating condition provided by an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of the working condition of the heat exchange fin provided in an embodiment of the present invention;

[0036] Figure 6 A schematic diagram of operating data of a conventional fin and a heat exchange fin provided in an embodiment of the present invention;

[0037] Figure 7 One of the structural schematic diagrams of the second embodiment of the fin unit provided in the embodiment of the present invention;

[0038] Figure 8 A second structural schematic diagram of a second embodiment of a fin unit provided in an embodiment of the present invention;

[0039] Fig. 9 A schematic structural diagram of a third embodiment of a fin unit provided in an embodiment of the present invention;

[0040] Fig.10 One of the structural schematic diagrams of the second embodiment of the heat exchange fin provided by the embodiment of the present invention;

[0041] Fig.11 The second structural schematic diagram of the second embodiment of the heat exchange fin provided in the embodiment of the present invention.

[0042] Icon: 10-heat exchange fin; 100-fin unit; 110-first bottom plate; 120-second bottom plate; 130-first spoiler; 140-second spoiler; 150-third spoiler; 160-fourth spoiler; 170-fifth spoiler; 180-sixth spoiler; 200-connecting unit; 210-first connecting plate; 220-second connecting plate; 230-third connecting plate; 240-fourth connecting plate. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0048] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0049] Plate-fin heat exchangers have been widely used in air separation equipment, petrochemical industry, refrigeration and cryogenic fields, automobile and aviation industries due to their compact structure and high heat exchange efficiency. Usually in plate-fin heat exchangers, fins are the core components of heat exchange, including staggered fins, straight fins, corrugated fins and louvered fins. When the fluid flows in the fluid channel formed between the two plates, it will be hindered by the fins and the boundary layer will be continuously destroyed, so that the heat transfer capacity is enhanced, but there is also the problem of large fluid flow resistance.

[0050] The staggered tooth structure is the most common form of fins in plate heat exchangers. Conventional staggered tooth fins are arranged in the fluid channel to increase the contact area with the fluid, improve the turbulence intensity of the fluid, and thus improve the heat exchange capacity.

[0051] Although the fins currently enhance heat transfer by reducing fin height, increasing peak distance, reducing pitch and even adding turbulent structures such as opening holes on the fin surface to improve heat transfer capacity, the resistance of the staggered fins is also greatly increased while increasing heat transfer.

[0052] Based on the problems existing in the prior art, please refer to Figures 1 to 3 The embodiment of the present invention provides a heat exchange fin 10 with a staggered tooth structure, which is applied to a heat exchange device, which can be used in air separation equipment, petrochemical industry, refrigeration and cryogenic fields, automobile and aviation industries and other fields.

[0053] It should be noted that in the heat exchange device, there are multiple heat exchange fins 10, and the multiple heat exchange fins 10 are overlapped to form a flow channel between two heat exchange fins 10. Each heat exchange fin 10 is provided with multiple fin units 100. By reasonably designing the structure of the fin unit 100, the heat exchange performance can be improved while reducing the resistance of the fin unit 100 to the fluid.

[0054] In detail, the fin unit 100 includes a first bottom plate 110 , a second bottom plate 120 , a first spoiler 130 , a second spoiler 140 , a third spoiler 150 , and a fourth spoiler 160 .

[0055] The first bottom plate 110, the first spoiler 130, the second spoiler 140 and the second bottom plate 120 are connected in sequence, the first spoiler 130 and the second spoiler 140 are arranged at an angle, and the first spoiler 130 and the second spoiler 140 form a first tooth;

[0056] The first bottom plate 110 , the third spoiler 150 , the fourth spoiler 160 and the second bottom plate 120 are connected in sequence, the third spoiler 150 and the fourth spoiler 160 are arranged at an angle, and the third spoiler 150 and the fourth spoiler 160 form a second tooth.

[0057] First, it should be noted that the structures of the first bottom plate 110 and the second bottom plate 120 are completely the same, and the first bottom plate 110 and the second bottom plate 120 are centrally symmetrically arranged.

[0058] The first teeth and the second teeth are sequentially disposed along the length direction of the first bottom plate 110 and the second bottom plate 120 .

[0059] First, define a first plane and a second plane. The first bottom plate 110 and the second bottom plate 120 are located in the second plane, the first plane and the second plane are perpendicular to each other, the second spoiler 140 and the third spoiler 150 are perpendicular to the first plane, and the projections of the second spoiler 140 and the third spoiler 150 on the first plane are cross-arranged, that is, the first teeth and the second teeth are staggered tooth structures that are staggered.

[0060] The first bottom plate 110 and the second bottom plate 120 are located in the same plane, i.e., the second plane. The angle between the first spoiler 130 and the second plane is the first angle, i.e., the angle between the second spoiler 140 and the second plane is the second angle, the angle between the third spoiler 150 and the second plane is the third angle, and the angle between the fourth spoiler 160 and the second plane is the fourth angle.

[0061] Among them, the first angle is greater than or less than the second angle. Of course, in addition to this, in other embodiments of the present invention, the third angle can also be greater than or less than the fourth angle; or in some other embodiments of the present invention, the first angle can also be greater than or less than the second angle, and the third angle can also be greater than or less than the fourth angle at the same time.

[0062] In other words, the first angle is not equal to the second angle, and the third angle is not equal to the fourth angle. The third angle is not equal to the fourth angle while the first angle is not equal to the second angle.

[0063] In this embodiment, by making the first angle not equal to the second angle, or making the third angle not equal to the fourth angle, or making the first angle not equal to the second angle and the third angle not equal to the fourth angle at the same time, at least one of the first spoiler 130, the second spoiler 140, the third spoiler 150 and the fourth spoiler 160 has a smaller inclination angle relative to the other spoilers, so that during the flow of the fluid in the heat exchange fin 10, the fluid can have a stronger flow on the spoiler with a smaller inclination angle, so that the fluid can more strongly impact the top and bottom of the fin unit 100, thereby improving the heat exchange efficiency; not only that, through the above structure, the fluid can also stably flow up and down when flowing between two adjacent teeth, further strengthening the turbulence of the fin unit 100, thereby improving the heat exchange capacity.

[0064] Furthermore, the fin unit 100 further includes a fifth spoiler 170 and a sixth spoiler 180 , wherein both ends of the fifth spoiler 170 are respectively connected to the first spoiler 130 and the second spoiler 140 , and both ends of the sixth spoiler 180 are respectively connected to the third spoiler 150 and the fourth spoiler 160 .

[0065] In this embodiment, the fifth spoiler 170 and the sixth spoiler 180 are both arranged parallel to the first bottom plate 110 and the second bottom plate 120. Therefore, when the fluid flows through the heat exchange fin 10, the fluid has a stronger flow on the spoiler with a smaller inclination angle, so that the fluid can more directly impact the fifth spoiler 170 and the sixth spoiler 180 located at the top of the fin unit 100, and the first bottom plate 110 and the second bottom plate 120 located at the bottom of the fin unit 100, thereby improving the heat exchange capacity of the fin unit 100.

[0066] like Figure 4 and Figure 5 As shown, the fin unit 100 provided by the present invention is compared with the conventional staggered tooth fin through CFD (Computational Fluid Dynamics). It can be clearly seen that when the fluid passes through the fin unit 100 provided by the present application, the fluid has a stronger flow in the height direction, and the fin has a stronger ability to enhance the turbulence.

[0067] like Figure 6 As shown, from the CFD data results, under the same space and working conditions, the heat exchange fin 10 provided by the present application has a 4.26% higher heat exchange rate and a 5.46% lower pressure drop than the traditional staggered fin.

[0068] Further, the fifth spoiler 170 and the sixth spoiler 180 are located in a third plane parallel to the second plane, the distance between the third plane and the second plane is set to Fh, the maximum distance between the first bottom plate 110 and the second bottom plate 120 is set to Fp, the first angle is set to θ1, and the second angle is set to θ2, then the following formula is satisfied:

[0069] arctan(Fh / Fp)<θ2<θ1<90°.

[0070] In this embodiment, by making multiple parameters of the fin unit 100 satisfy the above formula, the structural design of the fin unit 100 is reasonable, thereby ensuring that the fluid has a stronger movement in the height direction of the fin unit 100 when passing through the fin unit 100, thereby effectively improving the turbulence ability of the fin unit 100 and thus improving the heat exchange capacity.

[0071] Further, in some embodiments of the present invention, Figure 7 and Figure 8As shown, the first angle can also be made greater than or less than the fourth angle. Of course, in other embodiments of the present invention, the second angle can also be made greater than or less than the third angle, or in some other embodiments of the present invention, the first angle can also be made greater than or less than the fourth angle, and the second angle can also be made greater than or less than the third angle at the same time.

[0072] In other words, the first angle may be unequal to the fourth angle, the second angle may be greater than or less than the third angle, or the first angle may be unequal to the fourth angle while the second angle may be greater than or less than the third angle.

[0073] In this embodiment, by making the inclination angles of the first spoiler 130 and the fourth spoiler 160 of two adjacent teeth different, or making the inclination angles of the second spoiler 140 and the third spoiler 150 of two adjacent teeth different, or making the inclination angles of the first spoiler 130 and the fourth spoiler 160 different, and the inclination angles of the second spoiler 140 and the third spoiler 150 different, that is, satisfying at least one of θ1≠θ4 and θ2≠θ3, the spoiling capacity of the fin unit 100 is further improved, thereby further improving the heat exchange capacity of the heat exchange fin 10.

[0074] Further, in some embodiments of the present invention, Fig. 9 As shown, the width of the first spoiler 130 may be a first width, the width of the fourth spoiler 160 may be a second width, and the first width may be greater than or less than the second width.

[0075] In this embodiment, by making the window widths of two adjacent teeth inconsistent, that is, making LP1≠LP2, the flow disturbance capability of the fin unit 100 is further improved, thereby further improving the heat exchange capability of the heat exchange fin 10.

[0076] It should also be noted that the width of the second spoiler is the third width, the width of the third spoiler is the fourth width, and the third width is greater than or less than the fourth width.

[0077] In this embodiment, it is sufficient as long as at least one of “the first width is greater than or less than the second width” and “the third width is greater than or less than the fourth width” is satisfied.

[0078] It is also worth mentioning that the first spoiler 130 and the second spoiler 140 have the same width, and the third spoiler 150 and the fourth spoiler 160 have the same width.

[0079] Furthermore, there are multiple fin units 100 , which are distributed in an array, and two adjacent fin units 100 are connected via the first bottom plate 110 or the second bottom plate 120 .

[0080] In detail, along a first direction (X direction as shown in the figure) from the first bottom plate 110 toward the second bottom plate 120, the first bottom plate 110 of any fin unit 100 is connected to the second bottom plate 120 of another adjacent fin unit 100;

[0081] Along the length direction of the first bottom plate 110 or the second bottom plate 120, that is, along the second direction perpendicular to the first direction (the Y direction as shown in the figure), the first bottom plate 110 of any fin unit 100 is connected to the first bottom plate 110 of another adjacent fin unit 100, and the second bottom plate 120 of any fin unit 100 is connected to the second bottom plate 120 of another adjacent fin unit 100.

[0082] It can be seen that in this embodiment, multiple fin units 100 are connected only by the first base plate 110 and the second base plate 120, so that the heat exchange fin 10 can be made of a single sheet material using an integrated molding process such as stamping. The process is simple and low-cost, and the manufactured fin unit 100 and even the heat exchange fin 10 have high structural strength.

[0083] Furthermore, in other embodiments of the present invention, the fin unit 100 can also be combined with a conventional staggered fin, such as Fig.10 and Fig.11 As shown, the heat exchange fin 10 further includes a plurality of connection units 200 , and the number of the fin units 100 is multiple.

[0084] Along the first direction, the connecting unit 200 is arranged between two adjacent fin units 100, and the two adjacent fin units 100 are inverted with each other, that is, a plurality of fin units 100 and a plurality of connecting units 200 are connected in sequence in a distribution manner of fin unit 100, connecting unit 200, fin unit 100, connecting unit 200..., and among the two adjacent fin units 100, the bottom plate of one fin unit 100 is located at the bottom, and the bottom plate of the other fin unit 100 is located at the top, so as to be inverted with each other.

[0085] It should be noted that, since two adjacent fin units 100 are inverted with each other, two adjacent connection units 200 are symmetrically arranged.

[0086] In other embodiments, a portion of the plurality of fin units 100 may be provided with a connection unit 200; moreover, in some other embodiments of the present invention, two adjacent fin units 100 may also be provided in the same direction, that is, they do not need to be provided as mutually inverted structures.

[0087] In detail, along the second direction perpendicular to the first direction, the first bottom plate 110 of any fin unit 100 is connected to the first bottom plate 110 of another adjacent fin unit 100 , and the second bottom plate 120 of any fin unit 100 is connected to the second bottom plate 120 of another adjacent fin unit 100 .

[0088] In this embodiment, the heat exchange fins 10 formed in this way still have a strong turbulence ability for the fluid, thereby improving the heat exchange capacity of the heat exchange fins 10; in addition, by combining the heat exchange fins 10 with the traditional connecting unit 200, the adaptability of the heat exchange fins 10 is also improved, so as to facilitate the application of the heat exchange fins 10 in different usage scenarios.

[0089] In detail, the connection unit 200 includes a first connection plate 210 , a second connection plate 220 , a third connection plate 230 , and a fourth connection plate 240 .

[0090] Among them, the first connecting plate 210 and the fourth connecting plate 240 are arranged in parallel, the two ends of the second connecting plate 220 are respectively connected to the first connecting plate 210 and the fourth connecting plate 240, the two ends of the third connecting plate 230 are respectively connected to the first connecting plate 210 and the fourth connecting plate 240, the first connecting plate 210 is connected to the first bottom plate 110 of the adjacent fin unit 100, the fourth connecting plate 240 is connected to the second bottom plate 120 of another adjacent fin unit 100, and the second connecting plate 220 and the third connecting plate 230 are arranged in parallel.

[0091] In this embodiment, by setting a connecting unit 200 in multiple fin units 100, the first connecting plate 210 and the fourth connecting plate 240 of the connecting unit 200 are respectively connected to the first bottom plate 110 and the second bottom plate 120 of the fin unit 100, which can prevent the heat exchange fins 10 from deforming, thereby improving the overall structural stability and structural strength of the heat exchange fins 10.

[0092] Furthermore, an embodiment of the present invention also provides a heat exchanger, including the heat exchange fins in the above embodiment, the heat exchanger also includes a plurality of heat exchange plates, the plurality of heat exchange plates are stacked, and a heat exchange fin 10 is arranged between at least one group of adjacent heat exchange plates.

[0093] It should be noted that the heat exchanger provided by the present invention can be widely used in other fields such as water cooling plates and controllers, and is not specifically limited here.

[0094] In summary, the embodiment of the present invention provides a fin unit 100 and a heat exchange fin 10, by making the first angle not equal to the second angle, or making the third angle not equal to the fourth angle, or making the first angle not equal to the second angle and the third angle not equal to the fourth angle at the same time, so that at least one spoiler among the first spoiler 130, the second spoiler 140, the third spoiler 150 and the fourth spoiler 160 has a smaller inclination angle relative to other spoilers, so that during the flow of the fluid in the heat exchange fin 10, the fluid can have a stronger flow on the spoiler with a smaller inclination angle, so that the fluid can more strongly impact the top and bottom of the fin unit 100, thereby improving the heat exchange efficiency; not only that, through the above structure, the fluid can also stably flow up and down when flowing between two adjacent teeth, further strengthening the turbulence of the fin unit 100, thereby improving the heat exchange capacity.

[0095] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fin unit (100), characterized in that: The fin unit (100) comprises a first bottom plate (110), a second bottom plate (120), a first spoiler (130), a second spoiler (140), a third spoiler (150) and a fourth spoiler (160); The first bottom plate (110), the first spoiler (130), the second spoiler (140) and the second bottom plate (120) are connected in sequence, and the first spoiler (130) and the second spoiler (140) are arranged at an angle; The first bottom plate (110), the third spoiler plate (150), the fourth spoiler plate (160) and the second bottom plate (120) are connected in sequence, and the third spoiler plate (150) and the fourth spoiler plate (160) are arranged at an angle; A first plane and a second plane are defined, the first bottom plate (110) and the second bottom plate (120) are located on the second plane, the first plane and the second plane are perpendicular, and the projections of the second spoiler (140) and the third spoiler (150) on the first plane are arranged to intersect; wherein the angle between the first spoiler (130) and the second plane is a first angle, the angle between the second spoiler (140) and the second plane is a second angle, the angle between the third spoiler (150) and the second plane is a third angle, and the angle between the fourth spoiler (160) and the second plane is a fourth angle; Wherein, the first angle is greater than or less than the second angle; and / or, the third angle is greater than or less than the fourth angle.

2. The fin unit (100) according to claim 1, characterized in that: The first angle is greater than or less than the fourth angle.

3. The fin unit (100) according to claim 1 or 2, characterized in that: The second angle is greater than or less than the third angle.

4. The fin unit (100) according to claim 1, characterized in that: The first spoiler (130) has a first width, the fourth spoiler (160) has a second width, and the first width is greater than or less than the second width; and / or, The width of the second spoiler (140) is a third width, the width of the third spoiler (150) is a fourth width, and the third width is greater than or less than the fourth width.

5. The fin unit (100) according to claim 1, characterized in that: The fin unit (100) further comprises a fifth spoiler (170) and a sixth spoiler (180), wherein two ends of the fifth spoiler (170) are respectively connected to one end of the first spoiler (130) away from the first bottom plate (110) and one end of the second spoiler (140) away from the second bottom plate (120), and two ends of the sixth spoiler (180) are respectively connected to one end of the third spoiler (150) away from the first bottom plate (110) and one end of the fourth spoiler (160) away from the second bottom plate (120).

6. The fin unit (100) according to claim 5, characterized in that: The fifth spoiler (170) and the sixth spoiler (180) are located in a third plane parallel to the second plane, the distance between the third plane and the second plane is set to Fh, the maximum distance between the first bottom plate (110) and the second bottom plate (120) is set to Fp, the first angle is set to θ1, and the second angle is set to θ2, then the following formula is satisfied: arctan(Fh / Fp)<θ2<θ1<90°.

7. A heat exchange fin (10), characterized in that: It comprises a plurality of fin units (100) according to any one of claims 1 to 6, wherein the plurality of fin units (100) are connected via the first bottom plate (110) or the second bottom plate (120).

8. The heat exchange fin (10) according to claim 7, characterized in that: A first direction and a second direction are defined, the first direction and the second direction are perpendicular, the second direction is the main flow direction of the parallel fluid, the number of the fin units (100) is multiple, and the multiple fin units (100) are distributed in an array along the first direction and the second direction; And along the first direction, the first bottom plate (110) of any one of the fin units (100) is connected to the second bottom plate (120) of another adjacent fin unit (100); Along the second direction, the first bottom plate (110) of any one of the fin units (100) is connected to the first bottom plate (110) of another adjacent fin unit (100), and the second bottom plate (120) of any one of the fin units (100) is connected to the second bottom plate (120) of another adjacent fin unit (100).

9. The heat exchange fin (10) according to claim 7, characterized in that: The heat exchange fin (10) further comprises a plurality of connection units (200), and the number of the fin units (100) is plural; Along the first direction, the connection unit (200) is arranged between two adjacent fin units (100), and the two adjacent fin units (100) are inverted with each other; Along the second direction, the first bottom plate (110) of any one of the fin units (100) is connected to the first bottom plate (110) of another adjacent fin unit (100), and the second bottom plate (120) of any one of the fin units (100) is connected to the second bottom plate (120) of another adjacent fin unit (100); A first direction and a second direction are defined, the first direction and the second direction are perpendicular, the second direction is the main flow direction of the parallel fluid, and the plurality of fin units (100) and the plurality of connecting units (200) are distributed in an array along the first direction and the second direction.

10. The heat exchange fin (10) according to claim 9, characterized in that: The connection unit (200) comprises a first connection plate (210), a second connection plate (220), a third connection plate (230) and a fourth connection plate (240); The first connecting plate (210) and the fourth connecting plate (240) are arranged in parallel, the two ends of the second connecting plate (220) are respectively connected to the first connecting plate (210) and the fourth connecting plate (240), the two ends of the third connecting plate (230) are respectively connected to the first connecting plate (210) and the fourth connecting plate (240), the first connecting plate (210) is connected to the first bottom plate (110) of the adjacent fin unit (100), and the fourth connecting plate (240) is connected to the second bottom plate (120) of another adjacent fin unit (100).

11. A heat exchanger, characterized in that: The heat exchanger comprises the heat exchange fin (10) as claimed in any one of claims 7 to 10, wherein the heat exchanger further comprises a plurality of heat exchange plates, the plurality of heat exchange plates are stacked, and the heat exchange fin (10) is arranged between at least one group of adjacent heat exchange plates.

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