Module wing

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to a module fin. The module fins comprise outer walls and fins; a plurality of fins arranged at intervals are arranged in the outer wall, and the fins are fixedly connected with the outer wall. Compared with the prior art, due to the improvement of the structure, a new production process can be adopted for production, the productivity and the product quality can be greatly improved, the energy consumption is reduced, raw materials are saved, the management link is simplified, and the working efficiency is improved; and the working environment and the natural environment of workers are greatly improved because the working procedures with serious pollution are reduced. Compared with the prior art, the heat transfer mode and form of the sleeve flat fin and the coil pipe can be changed, so that the heat exchange efficiency of the heat exchanger can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a module wing. Background Art

[0002] Air conditioning casing flat fin heat exchanger as a heat exchange equipment is widely used in various industries. my country's air conditioning casing flat fin heat exchanger has developed rapidly in recent years, but the manufacturing process and heat transfer efficiency are still far behind those of advanced countries.

[0003] The main heat exchange parts commonly used in air conditioning heat exchangers - sleeve flat fins (such as Figure 1 As shown in the figure, it is made by punching with a progressive punching die. The investment in punching machines and molds is large, the training time for operators of punching equipment and debugging dies is long, and the maintenance cost during use is high. The punching process of punching sleeve flat fins has serious noise pollution, and the volatile oil used in processing sleeve flat fins seriously pollutes the air and affects the health of workers.

[0004] The storage and turnover of the sleeve flat fins take up a lot of space, and the oil on the sleeve flat fins that has not completely evaporated will pollute the environment and is difficult to remove, causing irreversible damage to the environment. The oil film formed by the residual volatile oil also affects the efficiency of the heat exchanger. The work of threading the sleeve flat fins is a very intensive physical work, which is cumbersome and has low production efficiency.

[0005] Large heat exchangers made of sleeve flat fins use many sheet metal parts, so the heat exchanger has poor rigidity. In order to ensure product safety, a large number of one-time auxiliary reinforcement parts are often required during the hoisting and transportation process, which greatly increases the manufacturing cost of the product. At the same time, the heat exchanger is prone to vibration and noise during operation, which affects the service life of the heat exchanger and pollutes the environment. There are many riveting processes in the assembly process of the heat exchanger, and most parts are riveted and assembled, which makes after-sales service, disassembly, repair and maintenance difficult.

[0006] Due to the deformation of the tube and the flange hole during tube penetration, the concentricity accuracy of the tube and the flange hole is low, making tube penetration difficult. At the same time, the interference fit between the coil and the flange hole of the sleeve flat fin is unstable after tube expansion, which greatly affects the heat transfer efficiency of the sleeve flat fin.

[0007] In summary, the main problems in the current production and manufacturing of shell and tube flat fin shell and tube heat exchangers are long process flow, high equipment investment, and large floor space. The processing equipment and molds are complex and have high manufacturing precision, but they are difficult to use and have high maintenance costs. The noise of the punch press during the processing seriously pollutes the environment, the leakage of the lubricating oil used will cause irreversible damage to the environment, and the volatile oil used will affect the health of the staff. The stacking of the shell and tube flat fins occupies an area of ​​​​, the thin aluminum foil used is extremely inconvenient to transport and operate, and the appearance is easily damaged. The tube threading, expansion and assembly processes of the shell and tube flat fins are physically intensive processes, the labor intensity of the production workers is high, and the production efficiency is low. Utility Model Content

[0008] The purpose of the utility model is to provide a module wing, which can solve the problems existing in the prior art.

[0009] The utility model provides a module fin, which comprises an outer wall and fins;

[0010] A plurality of fins arranged at intervals are arranged inside the outer wall, and the fins are fixedly connected to the outer wall.

[0011] Preferably, the module wing is divided into a closed module wing and an open module wing;

[0012] The outer wall of the closed module fin is a cylindrical structure;

[0013] The open module fin outer wall comprises a left wall, a right wall, a top wall and a bottom wall;

[0014] The left side wall and the right side wall are arranged opposite to each other, a plurality of fins are arranged between the left side wall and the right side wall, and adjacent fins are connected by a top wall or a bottom wall;

[0015] The fin close to the left side wall is connected to the left side wall through the top wall or the bottom wall;

[0016] The fin close to the right side wall is connected to the right side wall through the top wall or the bottom wall;

[0017] Drain holes are provided on the top wall and the bottom wall, and open grooves are formed between adjacent fins.

[0018] Preferably, the fin is provided with some flow-interfering protrusions.

[0019] Preferably, the module fin further comprises a heat spreader, and the heat spreader crosses through the plurality of fins.

[0020] Preferably, the module wing comprises a coil hole penetrating through both sides of the outer wall, and the cross-section of the coil hole is circular, elliptical or polygonal.

[0021] Preferably, the module wing is an integrated structure.

[0022] Preferably, the module wing is a split structure, and the split module wing is divided into two parts, an upper part and a lower part.

[0023] Preferably, the upper and lower parts of the module wing are connected by welding or mechanical fasteners.

[0024] Preferably, a coil is provided on the module wing, and the coil is arranged perpendicular to the side of the outer wall.

[0025] Preferably, the module wing is provided with an air duct in the middle of the module wing; the module wing is provided with a coil, and the coil is arranged at the end of the air duct.

[0026] Beneficial effects:

[0027] Compared with the existing technology, the utility model can adopt a new production process for production due to the structural improvement, which can greatly improve the productivity and product quality, reduce energy consumption, save raw materials, simplify the management links and improve work efficiency. Due to the reduction of seriously polluting processes, the working environment of workers and the natural environment are greatly improved.

[0028] Compared with the prior art, the utility model can change the heat transfer mode and form of the sleeve flat fins and the coil, thereby improving the heat exchange efficiency of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of a sleeve-and-tube flat fin commonly used in air-conditioning heat exchangers in the prior art;

[0031] Figure 2 The structural intention of the integral modular wing provided for the specific implementation mode of the utility model;

[0032] Figure 3 The structural intention of the split module wing provided for the specific implementation of the utility model;

[0033] Figure 4 The structural intention of the open integral modular wing provided for the specific implementation of the utility model;

[0034] Figure 5 The structural intention of the open split modular wing provided for the specific implementation of the utility model (without coil holes);

[0035] Figure 6 The structural intention of the parallel flow module fin provided for the specific implementation mode of the utility model;

[0036] Figure 7 The structural intention of the open split module wing provided for the specific implementation mode of the utility model (coil holes are provided).

[0037] Description of reference numerals:

[0038] 1': aluminum foil; 2': flange; 3': ' : Coil hole;

[0039] 1: outer wall, 2: fin, 3: spoiler convex, 4: heat sink, 5: reinforcing rib plate, 6: coil hole, 7: process hole, 8: process groove, 9: drainage hole; 10: side fin;

[0040] 11: open slot; 12: left side wall; 13: right side wall; 14: top wall; 15: bottom wall. DETAILED DESCRIPTION

[0041] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] like Figures 2 to 7 As shown, this embodiment provides a module fin, which includes an outer wall 1 and fins 2.

[0045] A plurality of fins 2 arranged at intervals are arranged inside the outer wall 1 , and the fins 2 are fixedly connected to the outer wall 1 .

[0046] Compared with the existing technology, the utility model can adopt a new production process for production due to the structural improvement, which can greatly improve the productivity and product quality, reduce energy consumption, save raw materials, simplify the management links and improve work efficiency. Due to the reduction of seriously polluting processes, the working environment of workers and the natural environment are greatly improved.

[0047] Compared with the prior art, the utility model can change the heat transfer mode and form of the sleeve flat fins and the coil, thereby improving the heat exchange efficiency of the heat exchanger.

[0048] The overall structure of ordinary sleeve flat fins and module fins is compared. The sleeve flat fins commonly used in current sleeve heat exchangers are shown in Figure 1. The outer shape of the sleeve flat fins is that a flange 2' is punched out on an ordinary aluminum foil 1', and the flange 2' surrounds the coil hole 3 for passing the coil. ' The module fin is a three-dimensional part formed by extruding or machining the material into a wind tube and making several layers of module fins 2 with intervals inside.

[0049] For sleeve flat fins, its production process can only process one piece at a time. A single sleeve flat fin is a sheet structure. In the later use process, multiple sleeve flat fins need to be combined into a three-dimensional structure. Compared with sleeve flat fins, modular fins can process several interconnected flat fins at a time, and the appearance is a three-dimensional shape. Specifically, sleeve flat fins are sheet-shaped, and modular fins are long blocks or long columns.

[0050] Due to the different application process environments of module wings, module wings are divided into closed module wings and open module wings, among which the open module wings are used to discharge condensed water.

[0051] like Figure 2 , Figure 3 As shown, the outer wall of the closed module wing is a cylindrical structure.

[0052] like Figure 4 , Figure 5 , Figure 7 As shown, the open module fin outer wall includes a left side wall 12 , a right side wall 13 , a top wall 14 and a bottom wall 15 .

[0053] The left side wall 12 and the right side wall 13 are arranged opposite to each other. A plurality of fins 2 are arranged between the left side wall 12 and the right side wall 14 and are spaced apart from each other. Adjacent fins 2 are connected via a top wall 14 or a bottom wall 15 .

[0054] The fin 2 close to the left side wall 12 is connected to the left side wall 12 via the top wall 14 or the bottom wall 15 .

[0055] The fin 2 close to the right side wall 13 is connected to the right side wall 13 via the top wall 14 or the bottom wall 15 .

[0056] Drain holes 9 are provided on the top wall 14 and the bottom wall 15 , and open grooves 11 are formed between adjacent fins 2 .

[0057] In order to further describe the above-mentioned open modular wing, the present embodiment also provides its specific structure. The open modular wing includes a plurality of repeated U-shaped structural units, each U-shaped structural unit is composed of two fins 2, the bottoms of the two fins are connected by a bottom wall 15, and adjacent fins 2 of adjacent U-shaped structural units are connected by a top wall 14.

[0058] It should be noted that the above division of the open module wing outer wall into left, right, top and bottom of the left side wall 12, right side wall 13, top wall 14 and bottom wall 15 is not a specific limitation, and its main purpose is to better illustrate the structure of the open module wing.

[0059] The heat exchanger made of closed module fins can form an air duct in the closed module fin shell, so the closed module fins do not need a shell, of course, a shell can be set for aesthetics. The open module fins need to be matched with a shell to form an air duct, so the heat exchanger made of open module fins needs to be set with a shell.

[0060] The closed module wing and the open module wing form air ducts in different ways. Each closed module wing can form an air duct independently. That is, the outer wall of the closed module wing in a cylindrical structure independently forms an air duct.

[0061] The open module fin forms an air duct in the process of combining the open module fin and the shell into a heat exchanger.

[0062] Compared with the functions of ordinary sleeve flat fins and modular fins, modular fins exchange heat between the medium in the duct and the coil. Independent sleeve flat fins cannot form an air duct, while independent modular fins or combined with a shell can form an air duct. Sleeve flat fins have no anti-bending function, while modular fins have a modular structure consisting of an outer wall and fins, and have a strong anti-bending function. The movement composed of flat sleeve flat fins requires a shell, while the movement composed of modular fins does not require a shell. From the perspective of aesthetics, a shell can be added, or an open modular fin requires a shell.

[0063] The specific structure of the module wing is shown below:

[0064] The module wing has an independent air duct, and the cross section of the air duct is circular, elliptical or rectangular. The fins in the air duct divide the air duct of the module wing into a plurality of independent small flow ventilation channels.

[0065] The fin 2 is provided with several flow-destroying protrusions 3. It should be noted that the flow-destroying protrusions 3 can be selectively used or abandoned for different heat exchangers.

[0066] Depending on the application conditions, a heat spreader may be added inside the module fins. The heat spreader crosses through multiple fins 2 to balance the heat. Of course, the heat spreader may not be provided.

[0067] In order to improve the stability and strength of the fins, reinforcing ribs may be added at appropriate positions according to the requirements of structural strength. Of course, reinforcing ribs 5 may not be provided, for example, transverse reinforcing ribs 5 may be provided inside the air duct.

[0068] The module fin includes a coil hole 6 penetrating through both sides of the outer wall 1, and the cross section of the coil hole 6 is circular, elliptical or polygonal.

[0069] The module wing is an integrated structure (such as Figure 2 , Figure 4 As shown), or split structure (as shown in 3, Figure 5 , Figure 7 shown).

[0070] When the module wing is a split structure, the split module wing is divided into two parts, the upper and lower parts. The upper and lower parts of the module wing are connected by welding or mechanical fasteners. Specifically, the split module wing (cross flow) is two independent parts and then welded or mechanically fastened into an independent part. The upper and lower parts can also be formed at one time without welding or mechanical fastening.

[0071] A process hole 7 is also provided on the module wing, and the process hole 7 can be opened at any position on the outer surface of the module wing as required.

[0072] The processing material of the module fin is ordinary metal material.

[0073] When the module wing adopts a split structure, the outer surface where the upper module wing and the lower module wing contact each other has a welding process groove 8 .

[0074] It should be noted that when the module wing adopts a split structure, the upper module wing and the lower module wing may not be provided with a hole structure such as the coil hole 6. Figure 5 As shown, a hole structure such as a coil hole 6 can also be provided, such as Figure 7 shown.

[0075] There are two configurations of coils and module fins:

[0076] One of them is:

[0077] The coil is arranged perpendicularly to the side of the outer wall 1. The flow direction of the medium in the coil intersects with the flow direction of the medium in the module fin (cross flow).

[0078] Another one is:

[0079] The coil is arranged at the end of the air duct. The flow direction of the medium in the coil is parallel to the flow direction of the medium in the module fin (parallel flow).

[0080] like Figure 6 As shown, the parallel flow closed module wing manufacturing method has an integral method and a split method. Specifically, a coil hole is provided at the end of the air duct, the coil is provided in the coil hole, and a side fin 10 is provided on the outside of the coil. The coil hole is parallel to the air duct, and the coil and the module wing are molded once or twice. A molded module wing has the same structure as the integral module wing structure described above except for the coil hole. A secondary molded module wing has the same structure as the split module wing structure described above except for the coil hole.

[0081] The manufacturing method of parallel flow open modular wing also has integral and split methods. Specifically, a coil hole is provided at the end of the air duct, the coil is provided in the coil hole, and a side fin 10 is provided on the outside of the coil. The coil hole is parallel to the air duct, and the coil and the modular wing are formed once or twice. A molded modular wing has the same structure as the above-mentioned open integral modular wing except the coil hole. The secondary molded modular wing has the same structure as the above-mentioned open split modular wing except the coil hole.

[0082] The process flow of ordinary sleeve flat fins to realize the heat exchanger core is: aluminum ingot - pressed into aluminum foil - aluminum foil stamped into sleeve flat fins - cleaning the oil stains of sleeve flat fins - coils through sleeve flat fins - through base plate - coil expansion - heat exchanger core. The processing is carried out through eight steps.

[0083] The process flow of modular fins to realize the heat exchanger core is: aluminum ingot extrusion - modular fins - coils through modular fins - heat exchanger core. The process is carried out in four steps. (The integral modular fins need to add a tube expansion process, while the split type does not need it)

[0084] In addition, the module wing in this embodiment can also be processed by other existing methods:

[0085] Method 1: Design and draw the engineering drawing of the module wing, customize the extrusion molding die according to the size specifications of the engineering drawing, use the metal material that meets the technical requirements, and the module wing can be mass-produced by the extruder. This process is a common metal extrusion molding method.

[0086] Method 2: Use CNC center to machine the module wing according to the specification size and technical requirements of the module engineering drawing using metal materials that meet the requirements. This method is relatively expensive.

[0087] Method three: extrusion or other mechanical processing methods.

[0088] The module fins provided in this embodiment have the following advantages:

[0089] 1. Simplify the manufacturing process, reduce equipment investment, reduce floor space, reduce labor intensity, and improve productivity

[0090] 2. The module wing adopts the extrusion process, eliminating the stamping process, eliminating the noise, noise pollution and environmental pollution caused by process oils.

[0091] 3. The use of rectangular cross-section module fin structure can improve the standardization of new component modules of heat exchanger core, improve design efficiency, production efficiency and management efficiency, improve the utilization rate of site space stacking, simplify and facilitate heat exchanger assembly, improve assembly processability, and thus improve product quality.

[0092] 4. By utilizing the mechanical properties of the truss structure of the module wing, the heat exchanger has a simple force system, flexible structural arrangement, improved structural stiffness, enhanced vibration resistance, and better operating stability. With the same stiffness, the heat exchanger is lighter, uses less material, and achieves a larger structural span.

[0093] 5. The three-dimensional structure of the module wing has higher strength than the ordinary sheet metal structure, so it can greatly reduce the materials used in the heat exchanger base plate, shell, structure, etc., and the assembly of sheet metal uses less materials, and the number of rivet holes will also be reduced, which not only reduces material costs and labor costs, but also reduces punching and avoids surface damage, reduces oxidation and rust, and increases product life. The reduction of riveting fixation and the increase of threaded fixation provide great convenience for after-sales service, repair and maintenance.

[0094] 6. The structural characteristics of the module fins expand the application range of the coil section and heat exchange structure. According to the different application conditions of the heat exchanger, the heat exchange coils with different cross sections are selected, which greatly improves and enhances the heat exchange efficiency of the heat exchange process of the heat exchanger.

[0095] The disadvantages of modular fins are that the structure of integral modular fins is more complex than that of sleeve flat fins, and it is difficult to process the coil holes. There may be some local difficulties that will increase the manufacturing cost. In terms of the entire processing process, the cost is still much lower than the manufacturing cost of sleeve flat fins. From the current extrusion process level, the internal fin processing capacity limit of modular fins needs to be further improved. The wider the thickness range, the wider the application field of modular fins, and the better the economy.

[0096] In summary, the high fin coefficient and large heat transfer area of ​​the shell and tube heat exchanger are the most prominent advantages. Most of the shell and tube flat fin materials of the heat exchanger are made of aluminum foil, so the weight of the heat exchanger is relatively light.

[0097] Modular fins are a breakthrough innovation based on sleeve flat fins. While retaining the advantages of sleeve flat fins, they overcome the shortcomings of flat sleeve flat fins in many aspects to the greatest extent.

[0098] The outstanding advantages of the utility model are that the production process is short, the process is simple, and the processability is good. The processing equipment is simple, the investment in manufacturing equipment is greatly reduced, and the maintenance cost of equipment molds is low. The processing process is chipless processing and lubricating oil and volatile oil are not applicable. Not only does it not pollute the environment, but it also does not require degreasing and cleaning of the sleeve flat fins. Therefore, it greatly improves productivity, saves unnecessary costs and greatly reduces the production cost of the heat exchanger. In particular, the process of assembling the heat exchanger with split modular wings is simpler, unnecessary process links are reduced, and assembly processability is better, which can significantly reduce labor intensity and improve productivity. The anti-bending structural characteristics of the modular wings improve the rigidity of the heat exchanger, and a large amount of outer shells and auxiliary materials are reduced, which significantly reduces the manufacturing cost of the heat exchanger.

[0099] The structural characteristics of the modular fins not only make assembly simple, but also make subsequent maintenance very convenient. I believe that heat exchangers made with modular fins are a major breakthrough in tube-in-tube flat fin heat exchangers, and will have a profound impact on the development of the tube-in-tube flat fin heat exchanger manufacturing industry in the future.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A modular wing, characterized in that: including the outer wall and fins; A plurality of fins arranged at intervals are arranged inside the outer wall, and the fins are fixedly connected to the outer wall; The modular fin is a three-dimensional part formed by extruding or machining the material into a wind tube and making several layers of modular fins with intervals inside; The module fin has an independent air duct. The function of the module fin is to contact the coil and exchange heat with the medium in the coil through the contacting coil.

2. The module wing according to claim 1, characterized in that: The module wing is divided into a closed module wing and an open module wing; The outer wall of the closed module fin is a cylindrical structure; The open module fin outer wall comprises a left wall, a right wall, a top wall and a bottom wall; The left side wall and the right side wall are arranged opposite to each other, a plurality of fins are arranged between the left side wall and the right side wall, and adjacent fins are connected by a top wall or a bottom wall; The fin close to the left side wall is connected to the left side wall through the top wall or the bottom wall; The fin close to the right side wall is connected to the right side wall through the top wall or the bottom wall; Drain holes are provided on the top wall and the bottom wall, and open grooves are formed between adjacent fins.

3. The module wing according to claim 1, characterized in that: The fins are provided with some flow-interfering protrusions.

4. The module wing according to claim 1, characterized in that: The module fin further includes a heat spreader, which crosses through the plurality of fins.

5. The module wing according to claim 1, characterized in that: The module fin comprises a coil hole penetrating through both sides of the outer wall, and the cross section of the coil hole is circular, elliptical or polygonal.

6. The module wing according to claim 2, characterized in that: The module wing is an integrated structure.

7. The module wing according to claim 1 or 5, characterized in that: The module wing is a split structure, and the split module wing is divided into two parts, an upper part and a lower part.

8. The module wing according to claim 7, characterized in that: The upper and lower parts of the module wing are connected by welding or mechanical fasteners.

9. The module wing according to claim 1, characterized in that: The module wing is provided with a coil, and the coil is arranged perpendicularly to the side of the outer wall.

10. The module wing according to claim 1, characterized in that: Located in the middle of the module wing, the module wing is provided with an air duct; The module wing is provided with a coil, and the coil is arranged at the end of the air duct.

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