Cooler with high cost performance

Abstract

The invention discloses a cooler with high cost performance, which is specifically divided into two types, one type adopts a combination of a flat pipe and a traditional short seal, and the other type adopts a combination of a flat pipe and a machining short seal. The flat pipe comprises an arch-shaped partition plate, two side edges in the length direction of the arch-shaped partition plate are each provided with a folded edge, each folded edge comprises an assembling plane and a transition section, a certain vertical distance is formed between the assembling plane and the surface of the arch-shaped partition plate, the transition sections are connected with the assembling planes and the side edges of the arch-shaped partition plate, and at least one section of folded edge is arranged on the edge, away from the transition sections, of each assembling plane. The two arch-shaped partition plates are attached through the four assembling planes, the flanges are aligned and assembled to form a flat pipe with an inner cavity, two ends of the flat pipe in the length direction are open, and the flat pipe is closed in the width direction. Drainage grooves are formed in the positions, corresponding to the assembling planes, of the two ends of the positions where the flanges are aligned, and located on the outer surface of the flat pipe. According to the plate-fin cooler, a long sealing strip on a traditional plate-fin cooler is omitted, material consumption, energy consumption in the welding process and product cost are reduced, and production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a cooler with high production efficiency and low cost, which is used for heat exchange between two media and belongs to the technical field of heat exchangers, in particular to two heat exchange core structures of the cooler. Background Art

[0002] With the progress of society, on the one hand, the heating power of equipment in various industries is getting bigger and bigger, and the demand for heat exchange of coolers is getting bigger and bigger, which leads to the larger and larger size of coolers. On the other hand, with the continuous increase of various raw materials, the cost of coolers is also getting higher and higher. Based on the above reasons, it is particularly important to design a cooler that is easy to produce efficiently and at low cost.

[0003] like Figure 1 As shown, it is a traditional plate-fin cooler, whose flat tube is composed of a partition 14, a long seal 12 and an inner fin 2. A traditional short seal 32 and an outer fin 4 are placed between the two flat tubes. A side plate 5 is placed outside the two outermost outer fins 4. The partition 14, the long seal 12, the inner fin 2, the traditional short seal 32, the outer fin 4, the side plate 5 and other parts are welded together to form a core assembly 6. The core assembly 6 and the slot plate assembly 7 are then welded together to form a cooler. The traditional plate-fin cooler has the following characteristics:

[0004] (1) During the assembly process of the conventional plate-fin cooler core assembly 6, the partition 14, the long seal 12, and the inner fin 2 are separated from each other, and their assembly time accounts for more than 50% of the entire core assembly 6.

[0005] (2) In a conventional plate-fin cooler, the weight of the long seal 12 accounts for more than 20-30% of the entire core assembly 6 .

[0006] (3) In the brazing process of the conventional plate-fin cooler core assembly 6, the brazing time of the core assembly 6 is very long due to the large weight of the long seal 12, which consumes a large amount of energy.

[0007] The above reasons lead to large material consumption, low production efficiency and high product cost of traditional plate-fin coolers. Summary of the invention

[0008] The present invention aims to provide a cooler with high cost performance, eliminate the traditional long seal strip, improve the processing efficiency of the cooler, shorten the assembly cycle, and reduce the production cost of the cooler.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] Cost-effective cooler with arched bulkhead and conventional short seals, including:

[0011] The overall outer contour of the arched partition is rectangular, and there is a folded edge on each of the two side edges along the length direction of the arched partition, the folded edge includes a mounting plane with a vertical distance from the surface of the arched partition, and a transition section connecting the mounting plane and the side of the arched partition, the mounting planes of the two folded edges are located on the same side of the arched partition, and the vertical distances to the surface of the arched partition are equal, and at least one flange is arranged on the edge of the mounting plane away from the transition section, and the direction of the flange is from the mounting plane to the arched partition;

[0012] The assembly plane has a fold or curled edge at each open position at both ends of the flat tube, which is close to the arched partition, so that the thickness of the assembly plane at this position increases, and one surface of the fold or curled edge is flush with the surface of the arched partition;

[0013] The two arched partitions are assembled by fitting together through four assembly planes and aligning the flanges to form a flat tube with an internal cavity, open at both ends in the length direction and closed in the width direction, and drainage grooves are formed on the outer surface of the flat tube at the two ends of the flange alignment corresponding to the assembly planes;

[0014] A plurality of the flat tubes are arranged in parallel and spaced apart in the same direction, and external fins are installed between two adjacent flat tubes;

[0015] The upper surface and lower surface of the traditional short seal are a pair of parallel planes. The traditional short seal is installed between two adjacent flat tubes and corresponds to the open position of the flat tubes. The upper surface of the traditional short seal is simultaneously in contact with the arched partition surface of the flat tube and the folded or curled surface of the assembly plane. The lower surface of the traditional short seal is simultaneously in contact with the arched partition surface of the flat tube and the folded or curled surface of the assembly plane.

[0016] The following is the second design:

[0017] Cost-effective cooler with arched bulkhead and machined short seals, including:

[0018] The overall outer contour of the arched partition is rectangular, and there is a folded edge on each of the two side edges along the length direction of the arched partition, the folded edge includes a mounting plane with a vertical distance from the surface of the arched partition, and a transition section connecting the mounting plane and the side of the arched partition, the mounting planes of the two folded edges are located on the same side of the arched partition, and the vertical distances to the surface of the arched partition are equal, and at least one flange is arranged on the edge of the mounting plane away from the transition section, and the direction of the flange is from the mounting plane to the arched partition;

[0019] The two arched partitions are assembled by fitting together through four assembly planes and aligning the flanges to form a flat tube with an internal cavity, open at both ends in the length direction and closed in the width direction, and drainage grooves are formed on the outer surface of the flat tube at the two ends of the flange alignment corresponding to the assembly planes;

[0020] A plurality of the flat tubes are arranged in parallel and spaced apart in the same direction, and external fins are installed between two adjacent flat tubes;

[0021] The upper surface and the lower surface of the machine-added short seal are a pair of parallel planes, and each of the upper surface and the lower surface is provided with a groove. The machine-added short seal is installed between two adjacent flat tubes and corresponds to the open position of the flat tube. The bottom surface of the groove on the upper surface of the machine-added short seal fits with the surface of the arched partition of the flat tube, the side surface of the groove on the upper surface of the machine-added short seal fits with the surface of the transition section of the flat tube, the upper surface of the machine-added short seal fits with the assembly plane, the bottom surface of the groove on the lower surface of the machine-added short seal fits with the surface of the arched partition of the flat tube, the side surface of the groove on the lower surface of the machine-added short seal fits with the surface of the transition section of the flat tube, and the lower surface of the machine-added short seal fits with the assembly plane.

[0022] As an option, a plurality of protrusions are provided on the surface of the arched partition, and the direction of the protrusions is from the surface of the arched partition toward the assembly plane.

[0023] As an option, the cavity of the flat tube is filled with internal fins.

[0024] As an option, the cost-effective cooler further includes a side plate, which is a flat plate, two side plates are placed in parallel and spaced apart, and the space between the two side plates forms an installation space for the flat tubes and the external fins.

[0025] The cost-effective cooler also includes a slot plate assembly, the inner cavity of which serves as a confluence cavity, a nozzle interface is provided on the slot plate assembly, two slot plate assemblies are respectively located at both ends of the length direction of the flat tube, and the inner cavity of the slot plate assembly is connected to the cavity of the flat tube.

[0026] Compared with the traditional plate-fin cooler, the present invention uses a flat tube with a new structure, removes the traditional long seal strip, and adjusts the core assembly method, thereby achieving the purpose of reducing material consumption, reducing the core assembly time, and reducing the core assembly brazing time. Finally, the efficient production and low-cost processing of the cooler are achieved.

[0027] The solution of the present invention has the following characteristics:

[0028] (1) The present invention uses a flat tube structure to obtain four structures to realize a high-efficiency, low-cost cooler. Compared with the traditional plate-fin cooler, the method of removing the long seal reduces material consumption, core assembly time and core assembly brazing time, achieving the purpose of high-efficiency production and low-cost processing of the cooler.

[0029] (2) The flat tube in the present invention is formed by stacking two arched partitions, and the arched partitions are provided with two parallel folded edge structures, which extend along the length direction of the arched partition to the two ends of the arched partition. The assembly planes of the two folded edge structures form a stacking plane. The two folded edge structures make the two stacked arched partitions form a closed cavity with open ends.

[0030] (3) The flat tubes of the present invention are provided with drainage groove structures, which can facilitate the flow of fluids such as water and air into and out of the outer surface of the flat tubes.

[0031] (4) As needed, supports and heat exchange structures such as inner fins can be placed in the flat tubes to support the flat tubes and enhance the heat exchange between the first medium and the second medium.

[0032] (5) According to the needs, in the present invention, through the reasonable design of the folded edge structure on the arched partition, a flat tube with open ends and circumferentially closed is formed. The protrusion structure in the flat tube plays a supporting role for the flat tube. At the same time, by using the protrusion structure on the arched partition, the flow state of the medium in the flat tube is changed, and the heat transfer structure such as the inner fin in the flat tube can be further removed without reducing the performance of the cooler, thereby further achieving the purpose of reducing the high-efficiency production and low cost of the cooler.

[0033] (6) As needed, when assembling the core assembly, the arched partition (including the support filled in the flat tube) can be used independently, or two arched partitions (including the support filled in the flat tube) can be processed into a flat tube assembly, thereby further achieving the purpose of reducing the production efficiency and cost of the cooler.

[0034] (7) A core assembly including the flat tubes of the present invention and a slot plate assembly are combined into a cooler, one medium passes through the slot plate assembly, the flat tubes of the core assembly and another slot plate assembly in sequence, and another medium passes between the external fins, thereby achieving efficient heat exchange between the two media. In space, the flow directions of the first medium and the second medium are perpendicular to each other, but the first medium and the second medium do not merge together.

[0035] The cooler of the present invention eliminates the long seal strip on the traditional plate-fin cooler, reduces material consumption, energy consumption in the welding process and product cost, and improves production efficiency in cooler manufacturing. Therefore, a more efficient processing method is obtained than the cooler processed by the traditional method, and a cooler with lower product cost is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of an existing plate-fin cooler;

[0037] Figure 2It is a schematic diagram of the structure of a cooler using an inner fin support and a machined short seal in the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of a cooler in the present invention that does not use inner fins but uses machine-added short seals;

[0039] Figure 4 It is a schematic diagram of the structure of a cooler using an inner fin support and a traditional short seal in the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of a cooler in the present invention that does not use inner fins but uses traditional short seals;

[0041] Figure 6 It is a schematic diagram of a flat tube structure with a support and no protruding structure on the surface of the arched partition in the present invention, and there is no folding structure at the four corners of the arched partition. The flat tube is used in conjunction with a machine-added short seal strip;

[0042] Figure 7 It is a schematic diagram of a flat tube structure composed of an arched partition with only a convex structure and no support in the present invention, and there is no folding structure at the four corners of the arched partition. The flat tube is used in conjunction with a machine-added short seal strip;

[0043] Figure 8 It is a schematic diagram of a flat tube structure with a support and no protruding structure on the surface of the arched partition in the present invention, and there are folding structures at the four corners of the arched partition. The flat tube is used in conjunction with a traditional short seal;

[0044] Fig. 9 It is a schematic diagram of a flat tube structure composed of an arched partition with only a convex structure and no support in the present invention, and there are folding structures at the four corners of the arched partition. The flat tube is used in conjunction with a traditional short seal;

[0045] Fig.10 It is a schematic diagram of the details of the folding structure on the four corners of the arched partition in the present invention;

[0046] Fig.11 It is a schematic diagram of protrusion structures of different shapes and distributions on the arched partition in the present invention;

[0047] Fig.12 It is a schematic diagram of a core assembly using inner fins + machined short seals in the present invention;

[0048] Fig.13 It is a schematic diagram of a core assembly without inner fins and machine-added short seals in the present invention;

[0049] Fig.14 It is a schematic diagram of a core assembly using inner fins + traditional short seals in the present invention;

[0050] Fig.15It is a schematic diagram of the core component adopting the non-inner fin + traditional short seal in the present invention;

[0051] In the figure: 1 - arched partition, 2 - inner fin, 31 - machined short seal, 32 - traditional short seal, 4 - outer fin, 5 - side plate, 6 - core component, 7 - channel plate component, 12 - long seal, 14 - partition. Specific embodiments

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above technical idea of the present invention, all modifications, substitutions, and changes made according to ordinary technical knowledge and customary means in the art are included in the scope of the present invention.

[0053] As Figure 2 to Figure 5 shown, in this embodiment, the cost-effective coolers are divided into two types according to whether the traditional short seal 32 or the machined short seal 31 is adopted. On this basis, four different main structures of coolers are designed according to whether the inside of the flat tube is filled with a support.

[0054] Figure 6 shows Figure 2 the arched partition 1 used in the cooler shown in, the flat tube formed by two arched partitions 1, and the drainage groove outside the flat tube. Inner fins 2 are filled between the two arched partitions 1. The basic cross-sectional shape of the arched partition 1 is similar to a "Ji" character.

[0055] Figure 7 shows Figure 3 the arched partition 1 used in the cooler shown in, the flat tube formed by two arched partitions 1, and the drainage groove outside the flat tube. Both of the two arched partitions 1 are provided with protrusions. When the two arched partitions 1 are superposed, the end faces of the protrusions are in contact or not in contact, forming internal support of the flat tube and constituting an internal flow channel at the same time.

[0056] Figure 8 shows Figure 4 the arched partition 1 used in the cooler shown in, the flat tube formed by two arched partitions 1, and the drainage groove outside the flat tube. Inner fins 2 are filled between the two arched partitions 1. At both ends in the length direction of the two arched partitions 1, there is a pair of folds or curls respectively.

[0057] Fig. 9 shows Figure 5 the arched partition 1 used in the cooler shown in, the flat tube formed by two arched partitions 1, and the drainage groove outside the flat tube. Both of the two arched partitions 1 are provided with protrusions. When the two arched partitions 1 are superposed, the end faces of the protrusions are in contact or not in contact, forming internal support of the flat tube and constituting an internal flow channel at the same time. At both ends in the length direction of the two arched partitions 1, there is a pair of folds or curls respectively.

[0058] Fig.10 The folded or curled edge structures at the ends of an arched partition 1 without protrusions and an arched partition 1 with protrusions, as well as the flange and the assembly plane are shown in FIG.

[0059] A flat tube is formed by two identical arched partitions 1 stacked facing each other, the overall outer contour of the arched partition 1 is rectangular, and there is a folded edge on each of the two side edges along the length direction of the arched partition 1. The folded edge includes an assembly plane that is at a vertical distance from the surface of the arched partition, and a transition section connecting the assembly plane and the side of the arched partition. The assembly planes of the two folded edges are located on the same side of the arched partition and are at an equal vertical distance to the surface of the arched partition. A plurality of flanges are arranged at intervals on the edge of the assembly plane away from the transition section, and the direction of the flange is from the assembly plane to the arched partition; the two arched partitions 1 are assembled by fitting together through four assembly planes and aligning the flanges to form a flat tube with an internal cavity, which is open at both ends in the length direction and closed in the width direction. Drainage grooves are formed on the outer surface of the flat tube at the two ends of the assembly plane corresponding to the aligned flange positions. These drainage groove structures can facilitate the flow of fluids such as water and air into and out of the outer surface of the flat tube.

[0060] like Fig.10 and Fig.11 The cross-sectional shape of the arched partition 1 is not limited to the trapezoidal shape in the present embodiment (the top edge of the trapezoid corresponds to the surface of the arched partition 1, the waist of the trapezoid corresponds to the transition section of the folded edge, the bottom edge of the trapezoid is disconnected and extends to both sides, corresponding to the assembly plane), and may also be other polygonal cross-sections. The principle is that when the folded edges of the two arched partitions 1 are fitted along the length direction of the arched partition 1, a circumferentially closed cavity with openings at both ends is formed.

[0061] The core assembly 6 is composed of at least one flat tube and one outer fin 4, one medium flows in the flat tube, and another medium flows at the outer fin 4. In space, the flow directions of the first medium and the second medium are perpendicular to each other, but the first medium and the second medium will not merge together, and the two media form a cross flow heat exchange.

[0062] like Figure 2 to Figure 5 As shown, when there are multiple flat tubes arranged from top to bottom, machine-added short seals 31 or conventional short seals 32 and outer fins 4 are placed between adjacent flat tubes, and the machine-added short seals 31 or conventional short seals 32 are arranged at both ends of the length direction of the outer fins 4. Figure 2 and Figure 5Side plates 5 are placed above and below the flat tubes. The above-mentioned flat tubes (including the flat tubes and the inner fins 2 as supports inside the flat tubes), machined short seals 31 or traditional short seals 32, outer fins 4 and side plates 5 are assembled together to form a core assembly 6. The core assembly 6 is brazed as a whole to form an assembly. The slot plate assembly 7 and the core assembly 6 are then welded together to form a cooler. The first medium flows through the slot plate assembly 7 and the core assembly 6 in sequence along the length direction of the flat tube to another slot plate assembly 7. The first medium flows inside the flat tube to form a plurality of parallel flow channels and flow planes. The second medium passes through the outer fins 4, and its flow direction is perpendicular to the length direction of the flat tube, and its flow plane is parallel to the medium flow plane inside the flat tube. Heat exchange occurs on the surface where the flat tube contacts the outer fins 4, thereby achieving efficient heat exchange between the two media.

[0063] As a solution, a support such as an inner fin 2 can be inserted into the flat tube, and the length of the inner fin 2 is the same as the length of the arched partition 1, for example Figure 2 and Figure 4 . Figure 2 and Figure 4 In the core assembly 6, the arched partition 1 has no protruding structure, and the inner fins 2 are filled as supports, and the upper and lower ends of the inner fins 2 are closely attached to the arched partition 1. Two outer fins 4 are respectively placed on the upper and lower surfaces of the flat tube, and the end of the outer fin 4 close to the slot plate assembly 7 is sealed with a machined short seal 31.

[0064] As another solution, a convex structure can be designed on the surface of the arched partition 1. On the one hand, these convex structures form internal support for the flat tubes, and on the other hand, these convex structures also play a heat exchange role similar to fins. The convex structures on the two arched partitions 1 can be in contact or not. For example Figure 3 and Figure 6 In the embodiment, there is no inner fin 2 or other supporting objects between the two arched partitions 1. Two outer fins 4 are respectively placed on the upper and lower surfaces of the flat tube, and the end of the outer fin 4 close to the slot plate assembly 7 is sealed with a conventional short seal 32.

[0065] In all the above implementation processes, the folding or curling structures of the four corners of the arched partition 1 are as follows: Fig.10 shown.

[0066] In all the above implementation processes, the core assembly 6 and the slot plate assembly 7 can be directly welded together. The structural schematic diagram of the core assembly 6 is shown in FIG. Figure 12 to Figure 15 shown.

[0067] In the design of the flat tube, the convex structure can be reasonably designed on the arched partition 1, and the distribution form of these convex structures can be used to change the flow state of the medium in the flat tube. Without reducing the performance of the cooler, the heat transfer structure such as the inner fin 2 in the flat tube can be further removed, thereby further achieving the purpose of reducing the efficient production and low cost of the cooler. Some common convex structure design forms are as follows: Fig.11 .

[0068] According to the needs, the arched partition 1 and the inner fin 2 and other supports can be preferentially combined into a flat tube assembly through a suitable processing scheme, which is convenient for the assembly and correction process of the core assembly 6 and reduces the product processing time. Of course, the arched partition 1 and the inner fin 2 or other supports can also be used separately as in the traditional plate-fin cooler production method. In this case, the folded edge on the arched partition 1 plays a positioning role for the supports, which also improves the convenience during assembly.

[0069] The above description is only a preferred embodiment of the present invention. The present invention includes but is not limited to this example, and this example may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Cost-effective cooler, characterized by: Includes arched bulkheads and traditional short seals, including: The overall outer contour of the arched partition is rectangular, and there is a folded edge on each of the two side edges along the length direction of the arched partition, the folded edge includes a mounting plane with a vertical distance from the surface of the arched partition, and a transition section connecting the mounting plane and the side of the arched partition, the mounting planes of the two folded edges are located on the same side of the arched partition, and the vertical distances to the surface of the arched partition are equal, and at least one flange is arranged on the edge of the mounting plane away from the transition section, and the direction of the flange is from the mounting plane to the arched partition; The assembly plane has a fold or curled edge at each open position at both ends of the flat tube, which is close to the arched partition, so that the thickness of the assembly plane at this position increases, and one surface of the fold or curled edge is flush with the surface of the arched partition; The two arched partitions are assembled by fitting together through four assembly planes and aligning the flanges to form a flat tube with an internal cavity, open at both ends in the length direction and closed in the width direction, and drainage grooves are formed on the outer surface of the flat tube at the two ends of the flange alignment corresponding to the assembly planes; A plurality of the flat tubes are arranged in parallel and spaced apart in the same direction, and external fins are installed between two adjacent flat tubes; The upper surface and lower surface of the traditional short seal are a pair of parallel planes. The traditional short seal is installed between two adjacent flat tubes and corresponds to the open position of the flat tubes. The upper surface of the traditional short seal is simultaneously in contact with the arched partition surface of the flat tube and the folded or curled surface of the assembly plane. The lower surface of the traditional short seal is simultaneously in contact with the arched partition surface of the flat tube and the folded or curled surface of the assembly plane.

2. Cost-effective cooler, characterized by: It consists of an arched partition and a machine-applied short seal, of which: The overall outer contour of the arched partition is rectangular, and there is a folded edge on each of the two side edges along the length direction of the arched partition, the folded edge includes a mounting plane with a vertical distance from the surface of the arched partition, and a transition section connecting the mounting plane and the side of the arched partition, the mounting planes of the two folded edges are located on the same side of the arched partition, and the vertical distances to the surface of the arched partition are equal, and at least one flange is arranged on the edge of the mounting plane away from the transition section, and the direction of the flange is from the mounting plane to the arched partition; The two arched partitions are assembled by fitting together through four assembly planes and aligning the flanges to form a flat tube with an internal cavity, open at both ends in the length direction and closed in the width direction, and drainage grooves are formed on the outer surface of the flat tube at the two ends of the flange alignment corresponding to the assembly planes; A plurality of the flat tubes are arranged in parallel and spaced apart in the same direction, and external fins are installed between two adjacent flat tubes; The upper surface and the lower surface of the machine-added short seal are a pair of parallel planes, and each of the upper surface and the lower surface is provided with a groove. The machine-added short seal is installed between two adjacent flat tubes and corresponds to the open position of the flat tube. The bottom surface of the groove on the upper surface of the machine-added short seal fits with the surface of the arched partition of the flat tube, the side surface of the groove on the upper surface of the machine-added short seal fits with the surface of the transition section of the flat tube, the upper surface of the machine-added short seal fits with the assembly plane, the bottom surface of the groove on the lower surface of the machine-added short seal fits with the surface of the arched partition of the flat tube, the side surface of the groove on the lower surface of the machine-added short seal fits with the surface of the transition section of the flat tube, and the lower surface of the machine-added short seal fits with the assembly plane.

3. The cost-effective cooler according to claim 1 or 2, characterized in that: A plurality of protrusions are arranged on the surface of the arched partition, and the direction of the protrusions is from the surface of the arched partition to the assembly plane.

4. The cost-effective cooler according to claim 1 or 2, characterized in that: The cavity of the flat tube is filled with inner fins.

5. The cost-effective cooler according to claim 1 or 2, characterized in that: It also includes a slot plate assembly, the inner cavity of the slot plate assembly serves as a confluence cavity, a nozzle interface is opened on the slot plate assembly, two slot plate assemblies are respectively located at both ends of the length direction of the flat tube, and the inner cavity of the slot plate assembly is connected to the cavity of the flat tube.

6. The cost-effective cooler according to claim 1 or 2, characterized in that: It also includes side plates, which are flat plates. Two side plates are placed in parallel and spaced apart, and the space between the two side plates forms an installation space for the flat tubes and the external fins.

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