Fin and heat exchanger

Abstract

A fin (10) and a heat exchanger (100). The fin (10) comprises a first fin body (11) and a second fin body (12), wherein the first fin body (11) is provided with a first mounting groove (111), the second fin body (12) is provided with a second mounting groove (121), the first mounting groove (111) and the second mounting groove (121) are oppositely fitted to form a mounting hole (101), and the first mounting groove (111) and the second mounting groove (121) are connected to each other; and the first fin body (11) is provided with a first drainage structure (112), and the second fin body (12) is provided with a second drainage structure (122). In a first direction, the first drainage structure (112) and the second drainage structure (122) are located on two sides of the mounting hole (101) and are both spaced apart from the mounting hole (101), and both the first drainage structure (112) and the second drainage structure (122) extend in a second direction.

Description

Fins and heat exchangers

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 202420628231.6, filed on March 28, 2024, entitled “Fins and Heat Exchangers,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of heat exchange technology, and in particular to a fin and a heat exchanger. Background Art

[0004] Heat exchangers use fins to increase the heat transfer area and improve heat transfer efficiency. When the fin surface temperature is lower than the dew point of the surrounding air, some water in the air will condense on the fin surface, forming condensed water. If the condensed water is not discharged in time and the fin temperature is lower than 0°C, the condensed water will condense and form frost on the fin, thereby affecting the heat transfer effect between the fin and the air and affecting the heat transfer efficiency. Summary of the Invention

[0005] According to various embodiments of the present application, a fin and a heat exchanger are provided.

[0006] A fin comprises a first sheet and a second sheet, the first sheet being configured with a first mounting groove, the second sheet being configured with a second mounting groove, the first mounting groove and the second mounting groove being matched to form a mounting hole, the mounting hole being used to mount a heat exchange flat tube; the end surfaces of the first mounting groove and the second mounting groove being arranged opposite to each other are connected to each other; the first sheet being configured with a first drainage structure, the second sheet being configured with a second drainage structure, along a first direction, the first drainage structure and the second drainage structure being located on both sides of the mounting hole, and both being spaced apart from the mounting hole, the first drainage structure and the second drainage structure being recessed and / or protruding toward the thickness direction of the first sheet and the second sheet respectively, and the first drainage structure and the second drainage structure both being extended along the second direction.

[0007] In one embodiment, the fin structure includes a first bending section and a second bending section, the first bending section is connected to the second bending section and is arranged at an angle to each other, and the first bending section and the second bending section form the first drainage structure or the second drainage structure.

[0008] In one embodiment, along the first direction, the first bending section is arranged close to the mounting hole, and the angle β between the first bending section and the thickness direction of the fin is not less than the angle θ between the second bending section and the thickness direction of the fin.

[0009] In one embodiment, the angle between the first bending section and the second bending section is α, 120°≤α≤160°.

[0010] In one embodiment, along the thickness direction of the fin, the dimension h of the first drainage structure and / or the second drainage structure is between 0.05 mm and 1.5 mm; and / or the width dimension b of the first drainage structure and / or the second drainage structure is between 0.5 mm and 5 mm.

[0011] In one embodiment, the first sheet and / or the second sheet is constructed with a plurality of spaced windows, each of which is arranged through the fin along the thickness direction of the fin; the fin is constructed with a spoiler structure at each window, the spoiler structure is protruding from the surface of the fin and connected to a portion of the edge of the window, and there is a gap between the side of the spoiler structure facing the window and the surface of the fin, and the gap is connected to the window.

[0012] In one embodiment, along the thickness direction of the fin, a dimension h of the first drainage structure and / or the second drainage structure is smaller than a dimension H of the gap.

[0013] In one embodiment, the fin is constructed with a connecting protrusion, which extends outward from the edge of the mounting hole along the thickness direction of the fin; along the thickness direction of the fin, the size of the connecting protrusion is 50% to 300% of the thickness size of the fin.

[0014] In one embodiment, a plurality of the mounting holes are provided, and the plurality of mounting holes are spaced apart in the second direction, and at least two of the mounting holes have different cross-sectional areas.

[0015] In one embodiment, along the second direction, the cross-sectional areas of the plurality of mounting holes gradually increase from top to bottom.

[0016] A heat exchanger comprises the above-mentioned fins and heat exchange flat tubes, wherein the heat exchange flat tubes are passed through the mounting holes and connected to the fins.

[0017] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to better describe and illustrate the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the accompanying drawings should not be considered to limit the scope of the disclosed inventions, the presently described embodiments and / or examples, and any of the best modes currently understood for these inventions.

[0019] FIG1 is a schematic structural diagram of the heat exchanger provided in this application.

[0020] FIG2 is a schematic structural diagram of the second sheet body in the fin provided in this application.

[0021] FIG3 is a top view of the fin provided in this application.

[0022] FIG4 is a front view of an embodiment of the fin provided in this application.

[0023] FIG5 is a front view of another embodiment of the fin provided in this application.

[0024] FIG6 is a top view of a fin in an embodiment provided in the present application.

[0025] Figure numerals: 100, heat exchanger; 10, fin; 101, mounting hole; 1011, first mounting hole; 1012, second mounting hole; 102, first bending section; 103, second bending section; 104, window; 105, spoiler structure; 106, connecting protrusion; 11, first sheet; 111, first mounting groove; 112, first drainage structure; 12, second sheet; 121, second mounting groove; 122, second drainage structure; 20, heat exchange flat tube. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0027] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0029] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0031] Please refer to Figures 1 to 5. The present application provides a fin 10, which includes a first plate 11 and a second plate 12. The first plate 11 is configured with a first mounting groove 111, and the second plate 12 is configured with a second mounting groove 121. The first mounting groove 111 and the second mounting groove 121 cooperate with each other to form a mounting hole 101, and the mounting hole 101 is used to mount the heat exchange flat tube 20; the end surfaces of the first mounting groove 111 and the second mounting groove 121 that are oppositely arranged are connected to each other; the first plate 11 is configured with a first drainage structure 112, and the second plate 12 is configured with a second drainage structure 122. Along the first direction, the first drainage structure 112 and the second drainage structure 122 are located on both sides of the mounting hole 101, and are both spaced apart from the mounting hole 101. The first drainage structure 112 and the second drainage structure 122 are recessed and / or protruded toward the thickness direction of the first plate 11 and the second plate 12, respectively, and the first drainage structure 112 and the second drainage structure 122 both extend along the second direction.

[0032] For ease of explanation, the projection of the fin 10 along its thickness direction is defined as a rectangle, the length direction of the fin 10 is defined as the second direction, and the width direction of the fin 10 is defined as the first direction. The first direction, the second direction, and the thickness direction of the fin 10 are perpendicular or substantially perpendicular. The first direction is defined as the x-axis, the second direction is defined as the z-axis, and the thickness direction of the fin 10 is defined as the y-axis.

[0033] In this manner, the fins 10 are arranged in separate pieces. One of the first and second pieces 11, 12 is first engaged with the heat exchange flat tubes 20, and then the other piece is used to complete the connection, forming a single unit consisting of the fins 10 and heat exchange flat tubes 20. This simplifies operation. Especially when the heat exchange flat tubes 20 are long, the heat exchange flat tubes 20 do not need to be sequentially inserted through the mounting holes 101 of multiple fins 10. This separate arrangement reduces interference during the assembly of the heat exchange flat tubes 20, improves assembly efficiency, and reduces damage to the fins 10 or heat exchange flat tubes 20.

[0034] Furthermore, the first sheet 11 is provided with a first drainage structure 112. When the airflow flows from the second sheet 12 toward the first sheet 11 along the first direction, the condensed water on the fin 10 is blown toward the side of the first sheet 11 away from the second mounting groove 121 along the first direction, that is, the side where the first drainage structure 112 is located. The first drainage structure 112 forms a drainage space that is narrower than the fin surface, which is conducive to the convergence of the condensed water and can accelerate the outflow of the condensed water. Similarly, the second sheet 12 is provided with a second drainage structure 122. When the airflow flows from the first sheet 11 toward the second sheet 12 along the first direction, the condensed water on the fin 10 is blown toward the side of the second sheet 12 away from the first mounting groove 111 along the first direction, that is, the side where the second drainage structure 122 is located. The second drainage structure 122 forms a space that is narrower than the fin surface, which is conducive to the convergence of the condensed water and can accelerate the outflow of the condensed water. In summary, by providing the first drainage structure 112 and the second drainage structure 122, a larger drainage space is provided, the drainage rate is increased, and the heat exchange efficiency is improved. At the same time, the provision of the first drainage structure 112 and the second drainage structure 122 further enhances the structural strength of the fin 10.

[0035] As shown in Figures 1, 2, 3 and 6, in a specific embodiment, the fin 10 is constructed with a first bending section 102 and a second bending section 103. The first bending section 102 is connected to the second bending section 103 and is arranged at an angle to each other. The first bending section 102 and the second bending section 103 form a first drainage structure 112 or a second drainage structure 122. In this way, the first drainage structure 112 and the second drainage structure 122 can form a gradually expanding drainage groove structure. Taking the first drainage structure 112 as an example, the groove of the first drainage structure 112 is wider, which facilitates the inflow of condensed water. As the depth of the first drainage structure 112 increases, the space of the first drainage structure 112 gradually decreases, which is conducive to accelerating the discharge of condensed water. In a more specific embodiment, the first drainage structure 112 or the second drainage structure 122 can be formed by stamping. In other embodiments, the fin 10 can also be concave or convex along its own thickness to form the first drainage structure 112 and / or the second drainage structure 122.

[0036] In one embodiment, along the thickness direction of the fin 10 , the fin 10 is recessed to form a first drainage structure 112 , and the fin 10 is recessed to form a second drainage structure.

[0037] In one embodiment, along the thickness direction of the fin 10 , the fin 10 is concave to form a first drainage structure 112 , and the fin 10 is convex to form a second drainage structure 122 .

[0038] In one embodiment, along the thickness direction of the fin 10 , the fin 10 protrudes to form a first drainage structure 112 , and the fin 10 protrudes to form a second drainage structure 122 .

[0039] It can be understood that when the formation directions of the first drainage structure 112 and the second drainage structure 122 are the same, it is convenient for processing the fin 10; when the formation directions of the first drainage structure 112 and the second drainage structure 122 are opposite, it is convenient for drainage on both sides of the fin 10 and increase the disturbance of the gas, thereby improving the heat exchange efficiency.

[0040] As shown in Figures 3 and 6, in a further embodiment, along the first direction, the first bent section 102 is positioned near the mounting hole 101, and the angle β between the first bent section 102 and the thickness direction of the fin 10 is no less than the angle θ between the second bent section 103 and the thickness direction of the fin 10. With this arrangement, the first bent section 102 and the second bent section 103 can each form an inclined surface for drainage, and the angle between the first bent section 102 and the first direction is relatively small, forming a gentle slope. Condensed water on the surface of the fin 10 can flow along the surface of the first bent section 102 into the first drainage structure 112 or the second drainage structure 122 under the influence of airflow, achieving a good drainage effect.

[0041] As shown in Figures 3 and 6, in a further embodiment, along the first direction, the angle α between the first bend section 102 and the second bend section 103 is 120°≤α≤160°. This allows the first bend section 102 and the second bend section 103 to enclose sufficient space to facilitate the collection and drainage of condensed water. This also ensures that the first bend section 102 and the second bend section 103 form a sufficient slope to direct the condensed water into the first drainage structure 112 or the second drainage structure 122. For example, α = 120°, 140°, or 160°.

[0042] As shown in Figures 3 and 6, in a specific embodiment, the dimension h of the first drain structure 112 and / or the second drain structure 122 along the thickness direction of the fin 10 is between 0.05 mm and 1.5 mm. This arrangement prevents the first and second bent sections 102 and 103 from being too large along the thickness direction of the fin 10 while forming the first and second drain structures 112, 122, thereby preventing interference with the installation of adjacent fins 10. Exemplarily, the depth dimension h of the first and / or second drain structures 112, 122 is 0.05 mm, 1 mm, or 1.5 mm.

[0043] As shown in Figures 3 and 6, in a specific embodiment, the width dimension b of the first drainage structure 112 and / or the second drainage structure 122 is between 0.5 mm and 5 mm to ensure that condensed water can flow smoothly into the first drainage structure 112 and / or the second drainage structure 122, and to ensure that the first drainage structure 112 and the second drainage structure 122 have a certain amount of space along the first direction to accommodate the condensed water, while also preventing the width from being too large and affecting the structural strength of the fin 10. Exemplarily, the width dimension b of the first drainage structure 112 and / or the second drainage structure 122 is 0.5 mm, 2.5 mm, or 5 mm.

[0044] As shown in Figures 1 and 2, in a further embodiment, the first sheet 11 and / or the second sheet 12 are configured with a plurality of spaced windows 104, each of which is disposed throughout the fin 10 along the thickness direction of the fin 10. In this manner, the windows 104 can connect the airflow on both sides of the fin 10 in the thickness direction. When the airflow flows through the windows 104, the airflow on both sides of the fin 10 in the thickness direction is disturbed, thereby improving the heat exchange efficiency between the airflow and the fin 10. The airflow on both sides of the fin 10 in the thickness direction can exchange heat, thereby promoting uniform heat exchange.

[0045] As shown in Figures 1 and 2, in a further embodiment, the fin 10 is constructed with a spoiler structure 105 at each window 104. The spoiler structure 105 is protruding from the surface of the fin 10 and connected to a portion of the edge of the window 104. There is a gap between the side of the spoiler structure 105 facing the window 104 and the surface of the fin 10. The gap is connected to the window 104 to facilitate the flow of fluid on both sides of the fin 10 along its own thickness direction. At the same time, the spoiler structure 105 can hinder the airflow, causing the flow rate and flow direction of the airflow to change, thereby enhancing the disturbance effect of the airflow, promoting sufficient heat exchange between the airflow and the fin 10, and improving the heat exchange effect.

[0046] As shown in FIG3 and FIG6 , in some embodiments, along the thickness direction of the fin 10 , the dimension h of the first drainage structure 112 is smaller than the dimension H of the gap. The dimension h of the second drainage structure 122 is smaller than the dimension H of the gap.

[0047] It can be understood that setting the size h of the first drainage structure 112 and / or the second drainage structure 122 to be smaller than the size H of the gap along the thickness direction of the fin 10 is conducive to disturbing the airflow flowing to the drainage structure, thereby improving the heat exchange efficiency.

[0048] In a further embodiment, the fin 10 is configured with a connecting protrusion 106 that extends outward from the edge of the mounting hole 101 along the thickness direction of the fin 10. This arrangement allows the heat exchange flat tubes 20 to be assembled in the mounting hole 101, with the outer circumferential walls of the heat exchange flat tubes 20 conforming to the walls of the mounting hole 101 and the connecting protrusions 106. This increases the heat exchange area, promotes heat transfer, and also enhances the positional restraint of the heat exchange flat tubes 20, improving the stability of their assembly.

[0049] In a specific embodiment, the dimension of the connecting protrusion 106 along the thickness direction of the fin 10 is 50% to 300% of the thickness dimension of the fin 10. The connecting protrusion 106 includes a first connecting protrusion and a plurality of second connecting protrusions. The first connecting protrusion is arranged circumferentially around the mounting hole 101 and protrudes from the edge of the mounting hole 101 along the thickness direction of the fin 10. The plurality of second connecting protrusions are spaced apart along the circumference of the mounting hole 101, with one end of each second connecting protrusion connected to the end of the first connecting protrusion away from the mounting hole 101. Each second connecting protrusion has a support portion extending in the second direction away from the first connecting protrusion, and abutting against one side of an adjacent fin 10. This arrangement increases the contact area with the heat exchange flat tubes 20 and enhances the overall structural stability of the heat exchanger 100. It also prevents the connecting protrusion 106 from being too large, which would result in a large assembly spacing between the front and rear fins 10 and affect the number of fins 10 installed. Exemplarily, along the thickness direction of the fin 10 , the size of the connecting protrusion 106 is 50%, 80%, 120%, 180%, 240% or 300% of the thickness of the fin 10 .

[0050] Multiple mounting holes 101 are provided, spaced apart in the second direction, with at least two mounting holes 101 having different cross-sectional dimensions. As shown in FIG4 , in an optional embodiment, the mounting holes 101 include a first mounting hole 1011 and a second mounting hole 1012. The first mounting hole 1011 and the second mounting hole 1012 are spaced apart in the second direction, and have different cross-sectional dimensions. Heat exchange flat tubes 20 of corresponding dimensions are installed in the first mounting hole 1011 and the second mounting hole 1012, respectively. This arrangement ensures heat exchange efficiency while promoting drainage. For example, if the cross-sectional area of ​​the first mounting hole 1011 is larger than that of the second mounting hole 1012, the wall of the first mounting hole 1011 has a larger contact area with the heat exchange flat tube 20, facilitating heat exchange. The wall of the second mounting hole 1012 has a relatively smaller contact area with the heat exchange flat tube 20, reducing obstruction to the flow of condensed water in the second direction and promoting the flow and drainage of condensed water.

[0051] As shown in FIG5 , in a further embodiment, the cross-sectional areas of the plurality of mounting holes 101 gradually increase from top to bottom along the second direction. Alternatively, the widths of the plurality of mounting holes 101 may be equal, and the thicknesses of the plurality of mounting holes 101 may gradually increase from top to bottom. Alternatively, both the widths and thicknesses of the plurality of mounting holes 101 may gradually increase from top to bottom. Since condensed water flows from top to bottom along the second direction on the fin 10, this arrangement facilitates the downward flow of condensed water from the upper layer, reduces obstruction, and promotes the accumulation and discharge of condensed water in the lower layer.

[0052] The present application also provides a heat exchanger 100, which includes the above-mentioned fins 10 and heat exchange flat tubes 20. The heat exchange flat tubes 20 are inserted into the mounting holes 101 and connected to the fins 10. The heat exchange medium in the heat exchange flat tubes 20 can transfer heat to the fins 10, and the fins 10 exchange heat with the external airflow. By providing the above-mentioned fins 10, the airflow blows in from either side along the first direction, and the fins 10 can have corresponding first drainage structures 112 or second drainage structures 122 to receive, gather and drain condensed water, promote the discharge of condensed water, and improve the overall heat exchange efficiency of the heat exchanger 100. When assembling the heat exchanger, there is no need to distinguish between the windward side and the leeward side of the fins 10, thereby improving the installation efficiency.

[0053] In a specific embodiment, the heat exchange flat tubes 20 may be microchannel flat tubes to limit the flow of the heat exchange medium, promote the full dissipation of heat in the heat exchange medium, and thus improve the heat exchange efficiency.

[0054] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A fin, characterized in that: The fin includes a first plate and a second plate, the first plate is configured with a first mounting groove, the second plate is configured with a second mounting groove, the first mounting groove and the second mounting groove cooperate with each other to form a mounting hole, and the mounting hole is used to install the heat exchange flat tube; The first sheet is constructed with a first drainage structure, and the second sheet is constructed with a second drainage structure. Along the first direction, the first drainage structure and the second drainage structure are located on both sides of the mounting hole, and are both spaced apart from the mounting hole. The first drainage structure is recessed or protruded along the thickness direction of the first sheet, and the second drainage structure is recessed or protruded along the thickness direction of the second sheet. Both the first drainage structure and the second drainage structure extend along the second direction.

2. The fin according to claim 1, wherein The fin structure includes a first bending section and a second bending section, the first bending section is connected to the second bending section and is arranged at an angle to each other, and the first bending section and the second bending section form the first drainage structure or the second drainage structure.

3. The fin according to claim 2, wherein: Along the first direction, the first bending section is arranged close to the mounting hole, and an angle β between the first bending section and the thickness direction of the fin is not less than an angle θ between the second bending section and the thickness direction of the fin.

4. The fin according to claim 2, wherein: Along the first direction, the angle between the first bending section and the second bending section is α, and 120°≤α≤160°.

5. The fin according to claim 1, wherein Along the thickness direction of the fin, a dimension h of the first drainage structure and / or the second drainage structure is between 0.05 mm and 1.5 mm; and / or a width dimension b of the first drainage structure and / or the second drainage structure is between 0.5 mm and 5 mm. The fin according to claim 1 , wherein: The first sheet and / or the second sheet is configured with a plurality of spaced windows, each of which is arranged through the fin along the thickness direction of the fin; The fin is constructed with a spoiler structure at each of the windows. The spoiler structure is protruding from the surface of the fin and connected to a portion of the edge of the window. There is a gap between the side of the spoiler structure facing the window and the fin surface, and the gap is connected to the window.

7. The fin according to claim 6, wherein: Along the thickness direction of the fin, a size h of the first drainage structure and / or the second drainage structure is smaller than a size H of the gap.

8. The fin according to claim 1, wherein The fin is configured with a connecting protrusion, which extends outward from the edge of the mounting hole along the thickness direction of the fin; Along the thickness direction of the fin, the size of the connecting protrusion is 50% to 300% of the thickness of the fin.

9. The fin according to any one of claims 1 to 8, wherein: There are multiple mounting holes, which are spaced apart in the second direction, and at least two mounting holes have different cross-sectional dimensions.

10. The fin according to claim 9, wherein Along the second direction, the cross-sectional areas of the plurality of mounting holes gradually increase from top to bottom.

11. A heat exchanger, characterized in that: include: The fin according to any one of claims 1 to 10; The heat exchange flat tubes are passed through the mounting holes and connected to the fins.

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