Low-temperature enhanced multi-flow plate-fin heat exchanger

Abstract

The invention belongs to the technical field of heat exchangers, and discloses a low-temperature enhanced multi-flow plate-fin heat exchanger which comprises a shell and a plurality of fins, the fins are arranged in the shell, a wear-resistant seat is arranged at the bottom of the shell, two wear-resistant plates are arranged at the top of the wear-resistant seat, and a plurality of first through holes are formed in the two sides of the shell. Flow plates are arranged on the two sides of the shell, a plurality of second through holes are formed in one side of each flow plate, the flow plates, the pipelines, the sealing covers, the L-shaped plates, the positioning strips and the positioning holes are matched, the four L-shaped plates are attached to the corresponding supporting frames correspondingly, one ends of the positioning strips are embedded into the positioning holes, the positioning strips and the positioning holes are in threaded connection, and the flow plates are connected through the second through holes. The fins are made of stainless steel materials and have heat conductivity, the plurality of pipelines are responsible for dividing media into a plurality of areas and guiding the media into the fins, and the design of the plurality of pipelines helps the media to make more uniform contact with the fins.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchangers, and specifically relates to a low-temperature enhanced multi-stream plate-fin heat exchanger. Background Art

[0002] A plate-fin heat exchanger is a heat exchange device that increases the heat exchange surface area through fins and is widely used in occasions that require heat dissipation and heat absorption, such as air conditioners, cooling systems, and heat exchange equipment. Its basic principle is that through the design of the fin structure, when the fluid flows inside the heat exchanger, a larger contact area can be generated with the fin surface, thereby improving the heat exchange efficiency. The working principle of the plate-fin heat exchanger is to utilize the heat exchange between the fluid and the fins. The fluid flows through the pipes and channels of the heat exchanger, and the fins increase the surface area of heat exchange, promoting the transfer of heat. The fins can change the flow direction of the fluid and increase the degree of flow turbulence, thereby enhancing the heat exchange efficiency.

[0003] However, the existing plate-fin heat exchangers are not perfect and there are still certain defects:

[0004] The fins include flat fins, and the outer shell of the heat exchanger is relatively weak. During operation, if it is subjected to vibration, the outer shell is prone to fatigue cracks and deformation, which will also cause damage to the fins and shorten the service life of the heat exchanger. The medium is often transported to the fin position through a separate pipe for heat exchange, and this process will take a long time. Therefore, a low-temperature enhanced multi-stream plate-fin heat exchanger is designed. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-temperature enhanced multi-stream plate-fin heat exchanger to solve the problem that the outer shell of the heat exchanger is relatively weak as mentioned in the above background art. During operation, if it is subjected to vibration, the outer shell is prone to fatigue cracks and deformation, which will also cause damage to the fins.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A low-temperature enhanced multi-stream plate-fin heat exchanger, including an outer shell and a plurality of fins. The plurality of fins are respectively arranged inside the outer shell. A wear-resistant seat is arranged at the bottom of the outer shell. Two wear-resistant plates are arranged on the top of the wear-resistant seat. A plurality of first through holes are opened on both sides of the outer shell. Flow plates are arranged on both sides of the outer shell. A plurality of second through holes are opened on one side of each of the two flow plates. Pipes are arranged inside the plurality of second through holes. A sealing cover is arranged on the top of the outer shell. Two L-shaped plates are arranged on both sides of the sealing cover. Two support frames are arranged on the top of each of the two wear-resistant plates.

[0007] Preferably, one side of each of the two wear-resistant plates is fixedly connected to both sides of the housing. Positioning strips are provided on both sides of the four support frames. Positioning holes are formed on both sides of the four L-shaped plates. One ends of the eight positioning strips are respectively threadedly connected to the interiors of the eight positioning holes.

[0008] Preferably, two triangular plates are fixedly installed on the top of each of the two wear-resistant plates. One side of each of the four triangular plates is fixedly connected to both sides of the housing. Two reinforcing blocks are fixedly installed on the top of each of the two flow plates.

[0009] Preferably, four limiting holes are formed in the top end of the housing. Limiting strips are provided on the top of the four reinforcing blocks. One ends of the four limiting strips are respectively threadedly connected to the interiors of the four limiting holes.

[0010] Preferably, vertical plates are fixedly installed on the top of the four L-shaped plates. Fitting plates are fixedly installed on one side of each adjacent pair of the vertical plates. Two embedding holes are formed in the top end of each of the two fitting plates. One side of each of the four vertical plates is fixedly connected to both sides of the sealing cover.

[0011] Preferably, embedding strips are snap-fitted and installed in the interiors of the four embedding holes. One end of each of the four embedding strips is provided with a compression-resistant cover. Side plates are provided on both sides of the compression-resistant cover.

[0012] Preferably, anti-slip rings are fixedly sleeved on one end of each of the four embedding strips. The two side plates are respectively threadedly connected to both sides of the compression-resistant cover through two auxiliary strips. The diameters of the four anti-slip rings are all larger than the diameters of the four embedding holes. The positions of the two side plates correspond to each other.

[0013] Preferably, one ends of the multiple pipes are respectively inserted and movably arranged in the interiors of the multiple first through holes. The positions of the multiple pipes are arranged at equal intervals. The positions of the two flow plates correspond to each other. The outer walls of the two flow plates are respectively in contact with the inner surface of the housing.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. Through the cooperation of the flow plate, pipeline, sealing cover, L-shaped plate, support frame, positioning strip and positioning hole provided by the present invention, the four L-shaped plates are respectively fitted with the corresponding support frames, and one end of the positioning strip is embedded into the positioning hole, and the two are threadedly connected, so as to limit and fix the support frame and the L-shaped plate, and then the sealing cover is installed on the top of the housing. Through this structure, it is convenient to disassemble and replace the damaged sealing cover. The materials of the sealing cover and the housing are both copper alloy, which maintain toughness at low temperature and have thermal conductivity at the same time. The flow plate is used to store the pipeline, and the fins are made of stainless steel material and have thermal conductivity. Multiple pipelines are responsible for dividing the medium into multiple regions and guiding it into the fins. The design of multiple pipelines helps the medium to contact the fins more evenly and improves the heat exchange efficiency.

[0016] 2. Through the cooperation of the wear-resistant seat, wear-resistant plate, triangular plate, fitting plate, embedding hole, pressure-resistant cover and side plate provided by the present invention, the materials of the wear-resistant seat and the wear-resistant plate are both aluminum alloy materials, which have compressive performance and can improve the anti-external force strength at the bottom and both sides of the housing. The triangular plate is triangular in shape, and the triangle has stability and is arranged between the housing and the wear-resistant plate, which enhances the firmness of the housing. The pressure-resistant cover is installed on the top of the sealing cover by relying on four embedding strips, so as to cover the top of the sealing cover. And because the material of the pressure-resistant cover is copper alloy, it can improve the compressive strength of the sealing cover. The pressure-resistant cover can replace the sealing cover to resist external forces, reduce the damage degree of the sealing cover, and extend the service life of the heat exchanger.

[0017] 3. Through the cooperation of the embedding strip, anti-slip ring, reinforcement block, limiting strip, limiting hole, second through hole and auxiliary strip provided by the present invention, one end of the embedding strip is sequentially embedded into the corresponding embedding hole, and the two are mutually engaged. And because the diameter of the anti-slip ring is larger than the diameter of the embedding hole, it avoids the embedding strip from continuing to slide down inside the embedding hole and keeps the embedding strip at a specific height. The flow plate moves on both sides of the housing, the bottom of the reinforcement block is fitted with the top of the housing, and then one end of the limiting strip is embedded into the limiting hole, and the two are threadedly connected, so as to limit and fix the housing and the flow plate. Through this structure, it is convenient to disassemble multiple pipelines from one side of the housing and facilitate the cleaning of the pipelines separately. The pressure-resistant cover and the side plate are threadedly connected through two auxiliary strips. After the auxiliary strips are rotated in the reverse direction, the pressure-resistant cover and the side plate can be disassembled from each other. The combined use of the pressure-resistant cover and the side plate increases the area of the pressure-resistant cover covering the top of the sealing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view structural schematic diagram of the present invention;

[0019] Figure 2 is the partial exploded view of the present invention;

[0020] Figure 3 The enlarged view of part A in Figure 2 the present invention;

[0021] Figure 4 The partial front view structural schematic diagram of the present invention;

[0022] Figure 5 The partial bottom view structural schematic diagram of the present invention;

[0023] Figure 6 The enlarged view of part B in Figure 5 the present invention.

[0024] In the figure: 1. Outer shell; 2. Fins; 3. Wear-resistant seat; 4. Wear-resistant plate; 5. Flow plate; 6. First through hole; 7. Pipeline; 8. Reinforcement block; 9. Limit strip; 10. Limit hole; 11. Triangular plate; 12. Support frame; 13. Positioning strip; 14. Sealing cover; 15. L-shaped plate; 16. Positioning hole; 17. Vertical plate; 18. Fitting plate; 19. Embedding hole; 20. Embedding strip; 21. Anti-disengagement ring; 22. Compression-resistant cover; 23. Side plate; 24. Second through hole; 25. Auxiliary strip. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] As Figures 1 to 6 shown, the embodiments of the present invention provide the technical solutions of a low-temperature enhanced multi-stream plate fin heat exchanger:

[0027] Embodiment 1:

[0028] As Figures 1 - 2As shown in the figure, a low-temperature enhanced multi-stream plate-fin heat exchanger includes a housing 1 and a plurality of fins 2. The plurality of fins 2 are respectively arranged inside the housing 1. A wear-resistant seat 3 is arranged at the bottom of the housing 1. Two wear-resistant plates 4 are arranged at the top of the wear-resistant seat 3. A plurality of first through holes 6 are formed on both sides of the housing 1. Flow plates 5 are arranged on both sides of the housing 1. A plurality of second through holes 24 are formed on one side of each of the two flow plates 5. Pipes 7 are arranged inside the plurality of second through holes 24. A sealing cover 14 is arranged at the top of the housing 1. Two L-shaped plates 15 are arranged on both sides of the sealing cover 14. Two support frames 12 are arranged at the top of each of the two wear-resistant plates 4. One side of each of the two wear-resistant plates 4 is fixedly connected to both sides of the housing 1. Positioning bars 13 are arranged on both sides of the four support frames 12. Positioning holes 16 are formed on both sides of the four L-shaped plates 15. One end of each of the eight positioning bars 13 is threadedly connected to the inside of each of the eight positioning holes 16. By inserting one end of the positioning bar 13 into the positioning hole 16 and threading them together, the support frame 12 and the L-shaped plate 15 can be limited and fixed, so as to install the sealing cover 14 on the top of the housing 1. Through this structure, it is convenient to disassemble and replace the damaged sealing cover 14. The materials of the sealing cover 14 and the housing 1 are both copper alloy, which maintain toughness at low temperature and have thermal conductivity at the same time. The flow plate 5 is used to accommodate the pipe 7. The fin 2 is made of stainless steel material and has thermal conductivity. The plurality of pipes 7 are responsible for dividing the medium into multiple regions and guiding it into the fin 2. The design of the plurality of pipes 7 helps the medium to contact the fin 2 more evenly, improving the heat exchange efficiency.

[0029] Embodiment 2:

[0030] Based on Embodiment 1, as Figures 2 - 4As shown in the figure, two triangular plates 11 are fixedly installed at the top of each of the two wear-resistant plates 4. One side of the four triangular plates 11 is fixedly connected to both sides of the housing 1 respectively. Two reinforcing blocks 8 are fixedly installed at the top of each of the two flow plates 5. Four limiting holes 10 are opened at the top end of the housing 1. Limiting strips 9 are arranged at the top of the four reinforcing blocks 8. One end of each of the four limiting strips 9 is threadedly connected to the inside of each of the four limiting holes 10. Through the cooperation of the wear-resistant seat 3, the wear-resistant plate 4, the triangular plate 11, the fitting plate 18, the embedding hole 19, the pressure-resistant cover 22 and the side plate 23, the materials of the wear-resistant seat 3 and the wear-resistant plate 4 are both aluminum alloy materials, which have compressive properties and can improve the external force resistance of the bottom and both sides of the housing 1. The shape of the triangular plate 11 is triangular, and the triangle has stability. And it is arranged between the housing 1 and the wear-resistant plate 4, which also enhances the firmness of the housing 1. The pressure-resistant cover 22 is installed on the top of the sealing cover 14 by relying on the four embedding strips 20, so as to cover the top of the sealing cover 14. And because the material of the pressure-resistant cover 22 is copper alloy, it can improve the compressive strength of the sealing cover 14. The pressure-resistant cover 22 can replace the sealing cover 14 to resist external forces, reduce the damage degree of the sealing cover 14, and thus extend the service life of the heat exchanger.

[0031] Embodiment Three:

[0032] On the basis of Embodiment One and Embodiment Two, as Figure 1 、 Figure 5 and Figure 6As shown in the figure, vertical plates 17 are fixedly installed at the tops of the four L-shaped plates 15. Fitting plates 18 are fixedly installed on one side of two adjacent vertical plates 17. Two embedding holes 19 are opened at the tops of the two fitting plates 18. One side of the four vertical plates 17 is fixedly connected to both sides of the sealing cover 14 respectively. Anti-slip rings 21 are fixedly sleeved at one end of the four embedding strips 20. The two side plates 23 are respectively threadedly connected to both sides of the compression-resistant cover 22 through two auxiliary strips 25. The diameters of the four anti-slip rings 21 are all larger than the diameters of the four embedding holes 19. The positions of the two side plates 23 correspond to each other. One ends of the multiple pipes 7 are respectively inserted and movably arranged inside the multiple first through holes 6. The positions of the multiple pipes 7 are arranged at equal intervals. The positions of the two flow plates 5 correspond to each other. The outer walls of the two flow plates 5 are respectively in contact with the inner surface of the housing 1. Through the cooperation of the embedding strips 20, anti-slip rings 21, reinforcement blocks 8, limiting strips 9, limiting holes 10, second through holes 24 and auxiliary strips 25, one end of the embedding strip 20 is sequentially embedded into the corresponding embedding hole 19, and the two are engaged with each other. And because the diameter of the anti-slip ring 21 is larger than the diameter of the embedding hole 19, it also avoids the embedding strip 20 from continuing to slide downward inside the embedding hole 19, so that the embedding strip 20 is kept at a specific height. The flow plate 5 moves on both sides of the housing 1. The bottom of the reinforcement block 8 is fitted with the top of the housing 1. Then one end of the limiting strip 9 is embedded into the limiting hole 10, and the two are threadedly connected, so as to limit and fix the housing 1 and the flow plate 5. Through this structure, it is convenient to disassemble the multiple pipes 7 from one side of the housing 1, which is convenient for cleaning the pipes 7 separately. The compression-resistant cover 22 and the side plate 23 are threadedly connected through two auxiliary strips 25. After the auxiliary strip 25 is rotated reversely, the compression-resistant cover 22 and the side plate 23 can be disassembled from each other. The combined use of the compression-resistant cover 22 and the side plate 23 increases the area of the compression-resistant cover 22 covering the top of the sealing cover 14.

[0033] Working principle and usage process of the present invention: The finned heat exchanger is a heat exchange device that increases the heat exchange surface area through fins and is widely used in occasions that require heat dissipation and heat absorption, such as air conditioners, cooling systems, and heat exchange equipment. Its basic principle is through the design of the fin structure, so that when the fluid flows inside the heat exchanger, it can generate a larger contact area with the fin surface, thereby improving the heat exchange efficiency. The working principle of the finned heat exchanger is to utilize the heat exchange between the fluid and the fins. The fluid flows through the pipes and channels of the heat exchanger, and the fins increase the surface area of heat exchange and promote the transfer of heat. The fins can change the flow direction of the fluid and increase the degree of turbulence of the flow, thereby enhancing the heat exchange efficiency. The fins include flat fins. The outer shell of the heat exchanger is relatively weak. During operation, if it is subjected to vibration, the outer shell is prone to fatigue cracks and deformation, which will also cause damage to the fins and shorten the service life of the heat exchanger. The medium is often transported to the fin position through a separate pipe for heat exchange, and this process will take a long time. Therefore, a low-temperature enhanced multi-stream plate fin heat exchanger is designed. Four L-shaped plates 15 are respectively attached to the corresponding support frames 12. One end of the positioning strip 13 is inserted into the positioning hole 16, and the two are threadedly connected, so as to limit and fix the support frame 12 and the L-shaped plate 15, and then the sealing cover 14 is installed on the top of the outer shell 1. Through this structure, it is convenient to disassemble and replace the damaged sealing cover 14. The materials of the sealing cover 14 and the outer shell 1 are both copper alloy, which remain tough at low temperatures and have thermal conductivity at the same time. The flow plate 5 is used to accommodate the pipes 7. The fins 2 are made of stainless steel material and have thermal conductivity. Multiple pipes 7 are responsible for dividing the medium into multiple areas and guiding it into the fins 2. The design of multiple pipes 7 helps the medium to contact the fins 2 more evenly and improves the heat exchange efficiency. The materials of the wear-resistant seats 3 and the wear-resistant plates 4 are both aluminum alloy materials, which have compressive properties and can improve the anti-external force strength at the bottom and both sides of the outer shell 1. The triangular plate 11 is triangular in shape. The triangle has stability and is arranged between the outer shell 1 and the wear-resistant plate 4, which enhances the firmness of the outer shell 1. The pressure-resistant cover 22 is installed on the top of the sealing cover 14 by relying on four embedding strips 20, so as to cover the top of the sealing cover 14. And because the material of the pressure-resistant cover 22 is copper alloy, it can improve the compressive strength of the sealing cover 14. The pressure-resistant cover 22 can replace the sealing cover 14 to resist external forces, reduce the damage degree of the sealing cover 14, and thus extend the service life of the heat exchanger. One end of the embedding strip 20 is sequentially inserted into the corresponding embedding hole 19, and the two are engaged with each other. And because the diameter of the anti-detachment ring 21 is larger than the diameter of the embedding hole 19, it avoids the embedding strip 20 from continuing to slide down inside the embedding hole 19 and keeps the embedding strip 20 at a specific height. The flow plate 5 moves on both sides of the outer shell 1. The bottom of the reinforcement block 8 is attached to the top of the outer shell 1. Then one end of the limiting strip 9 is inserted into the limiting hole 10, and the two are threadedly connected, so as to limit and fix the outer shell 1 and the flow plate 5.Through this structure, it is convenient to disassemble multiple pipes 7 from one side of the housing 1, facilitating the cleaning of the pipes 7 individually. The pressure-resistant cover 22 and the side plate 23 are threadedly connected through two auxiliary bars 25. After rotating the auxiliary bars 25 in the reverse direction, the pressure-resistant cover 22 and the side plate 23 can be disassembled from each other. The combined use of the pressure-resistant cover 22 and the side plate 23 increases the area of the top of the sealing cover 14 covered by the pressure-resistant cover 22.,

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low temperature enhanced multi-stream plate-fin heat exchanger, comprising a shell (1) and a plurality of fins (2), wherein the plurality of fins (2) are respectively arranged inside the shell (1), and characterized in that: A wear-resistant seat (3) is arranged at the bottom of the shell (1), two wear-resistant plates (4) are arranged at the top of the wear-resistant seat (3), a plurality of first through holes (6) are provided on both sides of the shell (1), flow plates (5) are arranged on both sides of the shell (1), a plurality of second through holes (24) are provided on one side of the two flow plates (5), pipes (7) are arranged inside the plurality of second through holes (24), a sealing cover (14) is arranged at the top of the shell (1), two L-shaped plates (15) are arranged on both sides of the sealing cover (14), and two support frames (12) are arranged on the top of the two wear-resistant plates (4).

2. The low temperature enhanced multi-stream plate-fin heat exchanger according to claim 1, characterized in that: One side of the two wear-resistant plates (4) is fixedly connected to the two sides of the outer shell (1), and positioning strips (13) are provided on both sides of the four support frames (12). Positioning holes (16) are provided on both sides of the four L-shaped plates (15), and one end of the eight positioning strips (13) is respectively connected to the internal threads of the eight positioning holes (16).

3. The low temperature enhanced multi-stream plate-fin heat exchanger according to claim 1, characterized in that: Two triangular plates (11) are fixedly mounted on the tops of the two wear-resistant plates (4), one side of the four triangular plates (11) is fixedly connected to the two sides of the outer shell (1) respectively, and two reinforcing blocks (8) are fixedly mounted on the tops of the two flow plates (5).

4. The low temperature enhanced multi-stream plate-fin heat exchanger according to claim 3, characterized in that: Four limiting holes (10) are provided at the top of the shell (1), and limiting strips (9) are provided at the tops of the four reinforcement blocks (8), and one end of the four limiting strips (9) is respectively connected to the internal threads of the four limiting holes (10).

5. The low temperature enhanced multi-stream plate-fin heat exchanger according to claim 1, characterized in that: A vertical plate (17) is fixedly installed on the top of the four L-shaped plates (15), a bonding plate (18) is fixedly installed on one side of two adjacent vertical plates (17), two embedding holes (19) are provided on the top of the two bonding plates (18), and one side of the four vertical plates (17) is fixedly connected to the two sides of the sealing cover (14) respectively.

6. The low temperature enhanced multi-stream plate-fin heat exchanger according to claim 5, characterized in that: An embedding strip (20) is mounted inside each of the four embedding holes (19), a pressure-resistant cover (22) is provided at one end of each of the four embedding strips (20), and side plates (23) are provided on both sides of the pressure-resistant cover (22).

7. The low temperature enhanced multi-stream plate-fin heat exchanger according to claim 6, characterized in that: One end of each of the four embedding strips (20) is fixedly sleeved with an anti-slip ring (21); the two side plates (23) are respectively threadedly connected to the two sides of the pressure-resistant cover (22) via two auxiliary strips (25); the diameters of the four anti-slip rings (21) are larger than the diameters of the four embedding holes (19); and the two side plates (23) are arranged at corresponding positions.

8. The low temperature enhanced multi-stream plate-fin heat exchanger according to claim 1, characterized in that: One ends of the plurality of pipes (7) are respectively inserted and moved inside the plurality of first through holes (6), the plurality of pipes (7) are arranged at equal intervals, the two flow plates (5) are arranged at corresponding positions, and the outer walls of the two flow plates (5) are respectively in contact with the inner surface of the outer shell (1).

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