Corrugated plate-fin heat exchanger with dimples

Abstract

The utility model discloses a corrugated plate-fin heat exchanger with dimples, which belongs to the technical field of heat exchangers and is characterized by comprising a partition plate, heat exchange mechanisms are fixedly connected to the top and the bottom of the partition plate, and a quick release mechanism is fixedly connected to a chamfer of the top of the partition plate. The heat exchange mechanism and the partition plate are stably connected and conveniently detached through the quick detaching mechanism, when the interior of the heat exchanger needs to be maintained or parts need to be replaced, the heat exchange mechanism and the partition plate can be conveniently separated by pulling the push rod to enable the balls to be separated from the clamping grooves, operation is easy and quick, maintenance cost is reduced, maintenance time is shortened, and maintenance efficiency is improved. The dimples in the heat exchange mechanism are stamped on the inner walls of the corrugated fins, when fluid flows through the dimples, disturbance of the fluid can be intensified, a heat transfer boundary layer is damaged, the heat transfer efficiency is greatly improved, the fluid can be guided to flow through the baffles, side leakage of the fluid is avoided, and the heat exchange effect is further optimized. The quick release mechanism comprises a clamping pipe, a ball clamping groove, a ball, a connecting pipe, a push rod, a reset spring, a clamping column and a clamping groove.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a corrugated plate-fin heat exchanger with a fin. Background Technology

[0002] In the context of today's energy-efficient utilization and industrial compact development, heat exchangers, as key equipment for heat transfer, are widely used in many fields such as refrigeration, air conditioning, chemical industry, power, and aerospace. Plate-fin heat exchangers, with their significant advantages such as compact structure, large heat transfer area per unit volume, high heat transfer efficiency, and strong adaptability, have become a popular heat exchange equipment in modern industry. They are mainly composed of components such as baffles, fins, and seals. The fins increase the heat transfer area and enhance the turbulence of the fluid, thereby improving the heat transfer effect.

[0003] Existing methods for enhancing heat transfer in tube-fin heat exchangers mainly involve changing the fin shape and adding vortex generators to the fin surface. However, from a mechanical and manufacturing perspective, using slotted fins or installing longitudinal vortex generators weakens the overall structural strength of the tube-fin heat exchanger. Moreover, since the slots are usually perpendicular to the inflowing fluid, while enhancing heat transfer, the pressure drop increases significantly, leading to increased flow resistance and consequently reducing the overall heat transfer effect.

[0004] The existing patent (publication number: CN219736097U) discloses a tube-fin heat exchanger with fins, including fins, fins, and a circular tube. The circular tube encloses the fins. Fins are stamped on one side of the fins. The fins are arranged parallel to each other at a fixed interval outside the circular tube. The circular tube is arranged in a staggered equilateral triangle pattern on the fins. The fins are symmetrically distributed around the circular tube, and the leading end of the fins is located on the transverse center line of the circular tube. When the fluid flows through the fins, turbulence is generated, forming vortices on the back of the fins, which intensifies the turbulence intensity of the fluid around the fins, thereby weakening or destroying the heat transfer boundary layer. This utility model improves the heat transfer performance of the tube-fin heat exchanger by changing the heat exchanger structure, thereby intensifying the momentum and energy transfer between the heat transfer wall and the low-temperature fluid in the mainstream region, and ultimately achieving enhanced heat transfer.

[0005] While existing patents offer solutions to the aforementioned problems, existing plate-fin heat exchangers still fall short in terms of improving heat exchange efficiency and ease of structural maintenance. After prolonged use, some heat exchangers experience loosening of internal component connections, which affects heat exchange performance and makes maintenance difficult.

[0006] To address this, a corrugated plate-fin heat exchanger with a finned plate is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a corrugated plate-fin heat exchanger with a finned tube, which can solve the problems that existing plate-fin heat exchangers still have shortcomings in terms of heat exchange efficiency improvement and structural maintenance convenience. Some heat exchangers, after long-term use, have loose internal component connections, which affects the heat exchange effect and makes maintenance difficult.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a corrugated plate-fin heat exchanger with a fin, comprising a partition plate, wherein a heat exchange mechanism is fixedly connected to the top and bottom of the partition plate, and a quick-release mechanism is fixedly connected to the chamfer at the top of the partition plate.

[0009] The quick-release mechanism includes a retaining tube, a ball groove, a ball, a connecting tube, a push rod, a return spring, a retaining post, and a retaining groove. The retaining tube is fixedly connected to the chamfer at the top of the partition. The ball groove is located at the bottom of the inner wall of the retaining tube. The ball is movably connected to the inside of the ball groove. The connecting tube is clamped to the inside of the ball groove. The push rod is movably connected to the inside of the connecting tube. The return spring is sleeved on the surface of the push rod. The surface of the push rod contacts the ball. The retaining post is fixedly connected to the chamfer at the bottom of the heat exchange mechanism. The retaining groove is located on the bottom surface of the retaining post.

[0010] Preferably, the heat exchange mechanism includes several corrugated fins, a slab, a connecting block, a threaded hole, and a fixing screw, wherein the corrugated fins are fixedly connected to the top and bottom of the partition plate respectively.

[0011] Preferably, the die is stamped on the inner wall of the corrugated fin, and the connecting block is welded to both sides of the top of the corrugated fin.

[0012] Preferably, the threaded holes are respectively opened on the inner side of the connecting block and the inner side of the partition, and the fixing screw is threaded to the inner side of the threaded holes.

[0013] Preferably, the inner wall of the slot is fitted with an elastic rubber pad, and the surface of the elastic rubber pad is engraved with anti-slip texture.

[0014] Preferably, the corrugated fins are made of aluminum alloy, and the surface of the corrugated fins is coated with a thermally conductive coating.

[0015] Preferably, the partition is made of stainless steel and the surface of the partition is coated with an anti-corrosion coating.

[0016] Preferably, baffles are fixedly connected to the top and bottom of the corrugated fins, and the surface of the baffles is coated with an anti-corrosion coating.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The quick-release mechanism of this application makes the connection between the heat exchange mechanism and the baffle plate stable and easy to disassemble. When it is necessary to repair or replace the internal parts of the heat exchanger, the heat exchange mechanism and the baffle plate can be easily separated by pulling the push rod to disengage the ball from the slot. The operation is simple and quick, reducing maintenance costs and time.

[0019] 2. In the heat exchange mechanism of this application, the cells are pressed against the inner wall of the corrugated fins. When the fluid flows through, the cells can aggravate the turbulence of the fluid, destroy the heat transfer boundary layer, and greatly improve the heat transfer efficiency. The baffle can guide the fluid flow and prevent fluid leakage, further optimizing the heat exchange effect. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the corrugated plate-fin heat exchanger with fins according to the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the snap-fit ​​post of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the heat exchange mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the baffle of this utility model.

[0025] In the diagram, 1. partition plate; 2. heat exchange mechanism; 21. corrugated fins; 22. septum; 23. connecting block; 24. threaded hole; 25. fixing screw; 3. quick release mechanism; 31. snap-fit ​​pipe; 32. ball groove; 33. ball; 34. connecting pipe; 35. push rod; 36. return spring; 37. snap-fit ​​post; 38. snap-fit ​​groove; 4. elastic rubber pad; 5. baffle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A corrugated plate-fin heat exchanger with a fin includes a partition 1, a heat exchange mechanism 2 is fixedly connected to the top and bottom of the partition 1, and a quick-release mechanism 3 is fixedly connected to the chamfer at the top of the partition 1.

[0029] The quick-release mechanism 3 includes a retaining tube 31, a ball groove 32, a ball 33, a connecting tube 34, a push rod 35, a return spring 36, a retaining post 37, and a retaining groove 38. The retaining tube 31 is fixedly connected to the chamfer at the top of the partition 1. The ball groove 32 is opened at the bottom of the inner wall of the retaining tube 31. The ball 33 is movably connected to the inner side of the ball groove 32. The connecting tube 34 is snapped into the inner side of the ball groove 32. The push rod 35 is movably connected to the inner side of the connecting tube 34. The return spring 36 is sleeved on the surface of the push rod 35. The surface of the push rod 35 contacts the ball 33. The retaining post 37 is fixedly connected to the chamfer at the bottom of the heat exchange mechanism 2. The retaining groove 38 is opened on the bottom surface of the retaining post 37.

[0030] In this embodiment: A partition 1 provides a support structure for the entire heat exchanger, ensuring the relative stability of each component. The snap-fit ​​pipe 31 cooperates with the snap-fit ​​post 37 to provide a basic structure for quick-release connections. The ball groove 32 accommodates the balls 33, providing them with space to move smoothly during connection and disassembly. During installation, the balls 33 move inwards into the ball groove 32 under the pressure of the snap-fit ​​post 37. When the groove 38 is in place, the balls pop out and snap into the inside of the groove 38 under the action of the return spring 36, completing the connection. During disassembly, the balls disengage from the groove 38 under the pull of the push rod 35, achieving separation. The connecting pipe 34 provides a track for the push rod 35. To ensure the stability of the push rod 35 during operation, the push rod 35 is used to control the movement of the ball 33. By pulling the push rod 35 to move the ball 33, a quick disassembly function is achieved. The operation is simple and convenient, making it easy for maintenance personnel to operate. During installation, the return spring 36 provides the return force to the ball 33, enabling it to automatically snap into the slot 38, ensuring a firm connection. After disassembly, the push rod 35 and the ball 33 return to their initial positions, preparing for the next connection. The snap-fit ​​post 37 cooperates with the snap-fit ​​tube 31 to ensure a stable connection between the heat exchange mechanism 2 and the partition 1 during operation. The slot 38 cooperates with the ball 33 to achieve the snap-fit ​​of the quick disassembly mechanism 3.

[0031] Specifically, such as Figure 4 As shown, the heat exchange mechanism 2 includes several corrugated fins 21, tubes 22, connecting blocks 23, threaded holes 24 and fixing screws 25. The corrugated fins 21 are fixedly connected to the top and bottom of the partition plate 1 respectively.

[0032] Specifically, such as Figure 4 As shown, the die 22 is stamped on the inner wall of the corrugated fin 21, and the connecting block 23 is welded to both sides of the top of the corrugated fin 21.

[0033] Specifically, such as Figure 4As shown, threaded holes 24 are respectively opened on the inner side of the connecting block 23 and the inner side of the partition 1, and the fixing screw 25 is threadedly connected to the inner side of the threaded holes 24.

[0034] In this embodiment: by setting corrugated fins 21 to increase the heat transfer area, heat exchange between hot and cold fluids is promoted. The cells 22 are pressed into the inner wall of the corrugated fins 21, effectively enhancing fluid turbulence. When the fluid flows through the cells 22, vortices are formed around them, destroying the heat transfer boundary layer, increasing the degree of fluid mixing, strengthening the heat transfer process, and significantly improving the heat exchange efficiency of the heat exchanger. The connecting block 23 firmly connects the corrugated fins 21 to the partition plate 1 through the fixing screw 25, enhancing the stability of the overall structure of the heat exchange mechanism 2, ensuring that the connection between the corrugated fins 21 and the partition plate 1 will not loosen under fluid flow and vibration conditions. The threaded hole 24 cooperates with the fixing screw 25 to realize the detachable connection between the corrugated fins 21 and the partition plate 1, which facilitates assembly and disassembly operations during production, installation and maintenance. The fixing screw 25 is threaded into the threaded hole 24, tightly connecting the connecting block 23 and the partition plate 1 together, so that the corrugated fins 21 and the partition plate 1 form a stable whole, ensuring the reliability of the heat exchange mechanism 2 during operation.

[0035] Specifically, such as Figure 3 As shown, the inner wall of the slot 38 is fitted with an elastic rubber pad 4, and the surface of the elastic rubber pad 4 is engraved with anti-slip texture.

[0036] Specifically, such as Figure 4 As shown, the corrugated fin 21 is made of aluminum alloy, and the surface of the corrugated fin 21 is coated with a thermally conductive coating.

[0037] In this embodiment: by setting an elastic rubber pad 4, which is elastic, it can buffer the ball 33 when it engages with the slot 38, reduce hard collisions, and prevent wear of the slot 38 and ball 33 due to long-term use. By setting anti-slip texture, the friction between the slot 38 and ball 33 is increased. By setting the corrugated fin 21 to be made of aluminum alloy, which has good thermal conductivity, it can quickly conduct heat, providing a basis for efficient heat exchange. By setting thermally conductive coating, its thermal conductivity is further enhanced, which can make heat transfer more quickly from the hot fluid to the corrugated fin 21, and then to the cold fluid, greatly improving the heat transfer efficiency of the heat exchanger.

[0038] Specifically, such as Figure 1 As shown, the partition 1 is made of stainless steel and its surface is coated with an anti-corrosion coating.

[0039] Specifically, such as Figure 1 As shown, baffles 5 are fixedly connected to the top and bottom of the corrugated fins 21, and the surface of the baffles 5 is coated with anti-corrosion paint.

[0040] In this embodiment: the baffle 1 is made of stainless steel, which has high strength and good corrosion resistance. As a supporting structure of the heat exchanger, it can withstand a certain pressure. The anti-corrosion coating further enhances the anti-corrosion performance of the baffle 1, effectively resisting the erosion of various corrosive media, preventing corrosion perforation and other problems, and extending the service life of the heat exchanger. The baffle 5 prevents the fluid from bypassing during the heat exchange process, allowing the hot and cold fluids to flow more orderly and fully between the corrugated fins 21, increasing the contact area and contact time between the fluid and the corrugated fins 21. The anti-corrosion coating prevents the baffle 5 from being eroded by corrosive components in the fluid, avoiding premature damage to the baffle 5, ensuring that its function of guiding the fluid is always normal, and guaranteeing the long-term efficient operation of the heat exchanger.

[0041] Working principle: When hot and cold fluids enter the heat exchange channels on both sides of the heat exchanger, the heat of the hot fluid is transferred to the corrugated fins 21 through the baffle 1. Due to the presence of the baffle 22, the hot fluid experiences increased turbulence as it flows through the corrugated fins 21, the boundary layer is disrupted, and the heat is transferred to the corrugated fins 21 more quickly. At the same time, the cold fluid flows in the channel on the other side and absorbs heat through the corrugated fins 21, thus achieving heat exchange. Throughout the heat exchange process, the baffle 5 ensures that the fluid flows within the effective area, improving heat exchange efficiency. If the heat exchanger needs maintenance or repair, the heat exchange mechanism 2 can be easily removed from the baffle 1 by pulling the push rod 35 in the quick-release mechanism 3 to disengage the ball bearing 33 from the slot 38. The internal components can then be inspected, repaired, or replaced. After the repair is completed, the heat exchanger can be reassembled according to the installation steps to restore it to normal working condition.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrugated plate-fin heat exchanger with baffles, comprising baffles (1), characterized in that: The top and bottom of the partition (1) are fixedly connected to a heat exchange mechanism (2), and the chamfer at the top of the partition (1) is fixedly connected to a quick-release mechanism (3). The quick-release mechanism (3) includes a retaining tube (31), a ball groove (32), a ball (33), a connecting tube (34), a push rod (35), a return spring (36), a retaining post (37), and a retaining groove (38). The retaining tube (31) is fixedly connected to the chamfer at the top of the partition (1). The ball groove (32) is opened at the bottom of the inner wall of the retaining tube (31). The ball (33) is movably connected to the inner side of the ball groove (32). The connecting tube (34) is clamped to the inner side of the ball groove (32). The push rod (35) is movably connected to the inner side of the connecting tube (34). The return spring (36) is sleeved on the surface of the push rod (35). The surface of the push rod (35) is in contact with the ball (33). The retaining post (37) is fixedly connected to the chamfer at the bottom of the heat exchange mechanism (2). The retaining groove (38) is opened on the bottom surface of the retaining post (37).

2. The corrugated plate-fin heat exchanger with a finned plate according to claim 1, characterized in that: The heat exchange mechanism (2) includes several corrugated fins (21), a slab (22), a connecting block (23), a threaded hole (24), and a fixing screw (25). The corrugated fins (21) are fixedly connected to the top and bottom of the partition plate (1).

3. A corrugated plate-fin heat exchanger with a finned plate according to claim 2, characterized in that: The die (22) is stamped on the inner wall of the corrugated fin (21), and the connecting block (23) is welded to both sides of the top of the corrugated fin (21).

4. A corrugated plate-fin heat exchanger with a finned plate according to claim 2, characterized in that: The threaded holes (24) are respectively opened on the inner side of the connecting block (23) and the inner side of the partition (1), and the fixing screw (25) is threadedly connected to the inner side of the threaded holes (24).

5. A corrugated plate-fin heat exchanger with a finned plate according to claim 1, characterized in that: The inner wall of the slot (38) is fitted with an elastic rubber pad (4), and the surface of the elastic rubber pad (4) is engraved with anti-slip texture.

6. A corrugated plate-fin heat exchanger with a finned plate according to claim 2, characterized in that: The corrugated fins (21) are made of aluminum alloy and the surface of the corrugated fins (21) is coated with a thermally conductive coating.

7. A corrugated plate-fin heat exchanger with a finned plate according to claim 1, characterized in that: The partition (1) is made of stainless steel and the surface of the partition (1) is coated with an anti-corrosion coating.

8. A corrugated plate-fin heat exchanger with a finned plate according to claim 2, characterized in that: The top and bottom of the corrugated fin (21) are fixedly connected to baffles (5), and the surface of the baffles (5) is coated with anti-corrosion paint.

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