New type of shell and tube heat exchanger

Abstract

This invention relates to the field of heat exchanger technology and discloses a novel shell-and-tube heat exchanger, comprising a shell with a refrigerant inlet, a pair of baffles fixedly installed inside the shell, a plurality of pipes for refrigerant flow fixedly installed on the baffles, a refrigerant outlet on the shell, and an air inlet on the shell; a partitioning mechanism is provided on the shell, airflow enters the shell along the air inlet, refrigerant flows in the pipes, heat exchange occurs when air contacts the surface of the pipes, and when part of the heat-exchanged air flows to the partitioning frame, it flows along the partitioning frame into the partitioning shell and out along the second air outlet, the airflow that has not reached the endpoint temperature can be transported through the second air outlet to the area with lower temperature requirements, realizing the secondary utilization of heat, and a temperature sensor can control the position of the partitioning frame according to the air temperature and the drive component to allow air of suitable temperature to enter the partitioning shell.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically, to a novel shell-and-tube heat exchanger. Background Technology

[0002] A shell-and-tube heat exchanger, also known as a tubular heat exchanger, is a type of indirect heat exchange device that uses the wall surface of a bundle of tubes inside a closed shell as the heat transfer surface. Specifically, one fluid flows inside the tubes, while another flows outside the tubes, and heat is transferred through the tube walls.

[0003] Chinese Patent CN119353949A discloses a shell-and-tube heat exchanger, comprising: a shell, a first end cover, a second end cover, several heat exchange tubes, and a fluid guide tube. The shell has a cylindrical structure, with a cold fluid inlet and a cold fluid outlet on its side walls at both ends. A first end cover and a second end cover are provided at both ends of the shell. Tube sheets are provided between the first end cover and the shell, and between the second end cover and the shell. A hot fluid inlet is provided on the first end cover, and a hot fluid outlet is provided on the second end cover. Several heat exchange tubes are disposed inside the shell, and their ends are connected to the tube sheets to connect the first end cover and the second end cover. Multiple annular fins with a ring structure are spaced apart along the axial direction on the outer circumference of the heat exchange tubes. The fluid guide tube is inserted into the hot fluid inlet and extends axially until it abuts the inner wall of the first end cover. Several through holes are provided on the side wall of the fluid guide tube near the heat exchange tubes. This configuration can improve the heat exchange efficiency of the heat exchanger.

[0004] Regarding the aforementioned and existing related technologies, the inventors believe that the following shortcomings often exist: In the field of shell-and-tube heat exchangers, heat exchange treatment of the airflow is usually required. Existing technologies are insufficient in terms of heat utilization; the airflow can only be transported out of the equipment after reaching the preset temperature, making it difficult to simultaneously transport to areas with different temperature requirements and achieve secondary heat utilization. Furthermore, during long-term use, impurities in the air will adhere to the tubes, affecting heat exchange efficiency, and there is a lack of effective measures for cleaning and collecting these impurities. In addition, during the airflow heat exchange process, the heat exchange efficiency needs to be improved; existing structures make it difficult to ensure sufficient contact between the airflow and the tubes for heat exchange. Summary of the Invention

[0005] This invention provides a novel shell-and-tube heat exchanger that solves the technical problems of existing shell-and-tube heat exchangers, which can only heat the airflow to a single preset temperature, cannot achieve multi-temperature zone flow and secondary heat utilization, and have low heat exchange utilization rate.

[0006] This invention provides a novel shell-and-tube heat exchanger, comprising a shell, a refrigerant inlet on the shell, a pair of baffles fixedly installed inside the shell, a plurality of pipes for refrigerant flow fixedly installed on the baffles, a refrigerant outlet on the shell, an air inlet on the shell, and a first air outlet on the shell.

[0007] A partitioning mechanism is provided on the housing. The partitioning mechanism includes a partition shell fixedly installed on the housing, a second air outlet on the partition shell, a pair of mounting cavities on the housing, a partition frame connected to the mounting cavity by a connector, a temperature sensor installed in the partition frame, and a pair of driving components for adjusting the position of the partition frame fixedly installed on the partition shell. The connector separates the partition shell from the cavity inside the housing and connects them through the partition frame. Airflow that has not reached the final temperature can be transported through the second air outlet to the area with a lower temperature requirement, realizing the secondary utilization of heat.

[0008] As a further optimization of the present invention, the driving component is an electric telescopic rod, which is electrically connected to the temperature sensor.

[0009] As a further optimization of the present invention, the connecting member includes a movable plate that is slidably connected to the mounting cavity, an extension plate that is slidably installed inside the movable plate, and a first spring that is provided between the extension plate and the movable plate.

[0010] As a further optimization of the present invention, a flow-disrupting component is provided inside the housing. The flow-disrupting component includes a spiral baffle plate fixedly installed on the partition frame. The spiral baffle plate is slidably connected to the through pipe. The spiral baffle plate can clean the surface of the through pipe when it moves with the partition frame.

[0011] As a further optimization of the present invention, the spiral baffle plate is provided with a plurality of mounting ports, a first rotating shaft is rotatably mounted in the mounting ports, and a turbulence blade is fixedly mounted on the first rotating shaft.

[0012] As a further optimization of the present invention, a filter screen is fixedly installed inside the separating frame to prevent impurities in the air from entering the separating frame with the airflow.

[0013] As a further optimization of the present invention, the spiral baffle is provided with an auxiliary component, the auxiliary component including a second rotating shaft rotatably mounted on the spiral baffle, a fan blade fixedly mounted on the second rotating shaft, and a plurality of rubber strips fixedly mounted on the second rotating shaft.

[0014] As a further optimization of the present invention, the housing is provided with a collection component for collecting impurities inside the housing.

[0015] As a further optimization of the present invention, the collection assembly includes a collection frame fixedly installed on the housing, a groove is provided inside the housing, a sealing plate is slidably installed in the groove, a second spring is fixedly installed on the sealing plate, one end of the second spring away from the sealing plate is fixedly connected to the inner wall of the groove, and a force-receiving ring that cooperates with the airflow is fixedly installed on the sealing plate.

[0016] As a further optimization of the present invention, a compression plate adapted to the size of the collection frame is fixedly installed on the sealing plate.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. By setting up a partitioning mechanism, the present invention can transport airflow that has not reached the endpoint temperature to an area with a lower temperature requirement through a second air outlet, thereby realizing the secondary utilization of heat. The temperature sensor and the driving component work together to control the position of the partitioning frame, so that air with the appropriate temperature enters the partitioning shell.

[0019] 2. The present invention has a turbulence component inside the housing, including a spiral baffle and turbulence blades. When the air flows through the spiral baffle, it moves in a spiral motion and fully contacts the through pipe for heat exchange. The airflow drives the turbulence blades to rotate, which enhances the airflow turbulence and further improves the heat exchange efficiency. The fan blades and rubber strips in the auxiliary component can also enhance the airflow turbulence and help clean the through pipe, thereby enhancing the heat exchange.

[0020] 3. The present invention is equipped with a collection component that uses airflow to push the sealing plate, causing the collection frame to open and collect impurities. After the airflow stops, the sealing plate returns to its original position. The squeezing plate on the sealing plate can compress the impurities in the collection frame, making it easier to clean and allowing more impurities to be collected. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the cooperation between the partition and the through pipe in this invention;

[0023] Figure 3 This is a schematic diagram of the partitioning mechanism in this invention;

[0024] Figure 4 This is a schematic diagram of the connector structure in this invention;

[0025] Figure 5 This is a schematic diagram of the structure of the turbulence-disrupting component of the present invention;

[0026] Figure 6 This is a schematic diagram of the auxiliary component in this invention;

[0027] Figure 7 This is a schematic diagram of the cooperation between the first rotating shaft and the deflector blade in this invention;

[0028] Figure 8 This is a schematic diagram of the structure of the collecting components in this invention;

[0029] Figure 9 This is a schematic diagram of the fit between the sealing plate and the force-bearing ring of the present invention.

[0030] In the picture:

[0031] 10. Shell; 11. Refrigerant inlet; 12. Refrigerant outlet; 13. Partition; 14. Pipe; 15. Air inlet; 16. First air outlet;

[0032] 20. Partitioning mechanism; 21. Partition shell; 22. Mounting cavity; 23. Connector; 24. Partition frame; 25. Drive component; 26. Filter screen; 27. Second air outlet;

[0033] 231. Movable plate; 232. Extension plate; 233. First spring;

[0034] 30. Baffle assembly; 31. Spiral baffle; 32. Mounting port; 33. First rotating shaft; 34. Baffle blades;

[0035] 40. Auxiliary components; 41. Second rotating shaft; 42. Fan blades; 43. Rubber strips;

[0036] 50. Collection component; 51. Collection frame; 52. Slide groove; 53. Sealing plate; 54. Second spring; 55. Force ring; 56. Squeezing plate. Detailed Implementation

[0037] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0038] like Figures 1 to 4 As shown in the figure, the novel shell-and-tube heat exchanger of the present invention includes a shell 10, a refrigerant inlet 11 provided on the shell 10, a pair of partitions 13 fixedly installed inside the shell 10, a plurality of through pipes 14 for refrigerant flow fixedly installed on the partitions 13, a refrigerant outlet 12 provided on the shell 10, an air inlet 15 provided on the shell 10, and a first air outlet 16 provided on the shell 10;

[0039] A partitioning mechanism 20 is provided on the housing 10. The partitioning mechanism 20 includes a partition shell 21 fixedly installed on the housing 10. The partition shell 21 is provided with a second air outlet 27. The housing 10 has a pair of mounting cavities 22. A partition frame 24 is connected to the mounting cavity 22 through a connector 23. A temperature sensor is provided in the partition frame 24. A pair of driving components 25 for adjusting the position of the partition frame 24 are fixedly installed on the partition shell 21. The connector 23 separates the partition shell 21 from the cavity inside the housing 10 and connects it through the partition frame 24. Airflow that has not reached the final temperature can be transported to the area with a lower temperature requirement through the second air outlet 27 to realize the secondary utilization of heat.

[0040] When the present invention is in operation, the airflow enters the housing 10 along the air inlet 15, and the refrigerant flows in the pipe 14. When the air comes into contact with the surface of the pipe 14, heat exchange occurs. When part of the air that has undergone heat exchange flows to the dividing frame 24, it will flow into the dividing shell 21 along the dividing frame 24 and flow out along the second air outlet 27. The airflow that has not reached the endpoint temperature can be delivered to the area with a lower temperature requirement through the second air outlet 27 to realize the secondary utilization of heat. The temperature sensor can control the position of the dividing frame 24 in conjunction with the driving component 25 according to the air temperature, so as to allow the air with the appropriate temperature to enter the dividing shell 21.

[0041] like Figure 4 As shown, the driving component 25 is an electric telescopic rod, which is electrically connected to a temperature sensor. The temperature sensor can control the position of the separating frame 24 within the separating shell 21 by adjusting the position of the electric telescopic rod in conjunction with the air temperature, so as to allow air of the appropriate temperature to enter the separating shell 21.

[0042] like Figure 4 As shown, the connector 23 includes a movable plate 231 that is slidably connected to the mounting cavity 22, an extension plate 232 that is slidably installed in the movable plate 231, and a first spring 233 is provided between the extension plate 232 and the movable plate 231.

[0043] During the process of the driving component 25 moving the dividing frame 24, the first spring 233 ensures that the movable plate 231 and the extension plate 232 can always seal and separate the area inside the dividing shell 21 from the area inside the shell 10. The area inside the shell 10 can only enter the dividing shell 21 through the dividing frame 24, ensuring the accuracy of the air temperature entering the dividing shell 21.

[0044] like Figure 5 As shown, a flow-disrupting component 30 is provided inside the housing 10. The flow-disrupting component 30 includes a spiral baffle 31 fixedly installed on the partition frame. The spiral baffle 31 is slidably connected to the through pipe 14. The spiral baffle 31 can clean the surface of the through pipe 14 when it moves with the partition frame.

[0045] When air flows through the spiral baffle 31, the air will spiral within the shell 10, fully contacting the through pipe 14 for heat exchange, thus improving heat exchange efficiency. At the same time, after the air has been inside the shell 10 for a long time, impurities in the air will adhere to the through pipe 14. When the driving component 25 drives the shell 21 to move back and forth, the spiral baffle 31 will remove the impurities from the surface of the through pipe 14, preventing impurities from adhering to the through pipe 14 and affecting the heat exchange efficiency.

[0046] like Figures 5 to 7 As shown, the spiral baffle 31 has several mounting ports 32, and a first rotating shaft 33 is rotatably mounted in the mounting port 32. A turbulence blade 34 is fixedly mounted on the first rotating shaft 33.

[0047] like Figure 5 As shown, a filter screen 26 is fixedly installed inside the separating frame 24 to prevent impurities in the air from entering the separating shell 21 with the airflow; the filter screen 26 can prevent impurities scraped off the pipe 14 from entering the separating shell 21 with the airflow.

[0048] like Figure 6 As shown, the spiral baffle 31 is provided with an auxiliary component 40. The auxiliary component 40 includes a second rotating shaft 41 rotatably mounted on the spiral baffle 31, a fan blade 42 fixedly mounted on the second rotating shaft 41, and a plurality of rubber strips 43 fixedly mounted on the second rotating shaft 41.

[0049] When the airflow flows within the casing 10, it will drive the fan blades 42 and the second rotating shaft 41 to rotate, further increasing the turbulence of the airflow and enhancing heat exchange. At the same time, when the second rotating shaft 41 rotates, it will drive the rubber strip 43 to strike the through pipe 14, causing the through pipe 14 to vibrate slightly, making it easier for the spiral baffle 31 to slide and clean on the through pipe 14, making it easier for impurities to fall off and avoid secondary adhesion to the through pipe 14.

[0050] like Figures 8 to 9 As shown, the housing 10 is provided with a collection assembly 50 for collecting impurities inside the housing 10. The collection assembly 50 includes a collection frame 51 fixedly installed on the housing 10. A groove 52 is opened inside the housing 10. A sealing plate 53 is slidably installed in the groove 52. A second spring 54 is fixedly installed on the sealing plate 53. The end of the second spring 54 away from the sealing plate 53 is fixedly connected to the inner wall of the groove 52. A force-receiving ring 55 that cooperates with the airflow is fixedly installed on the sealing plate 53.

[0051] When air enters the housing 10 through the first air inlet 15 and flows toward the first air outlet 16, the air comes into contact with the force ring 55, which drives the sealing plate 53 to move into the slide groove 52 and squeezes the second spring 54. When the sealing plate 53 moves, the collection frame 51 will be in an open state. The heavier impurities that are scraped off will fall into the collection frame 51 and be collected when they move to below the first air outlet 16. After the airflow no longer enters the housing 10, the second spring 54 will drive the sealing plate 53 and the force ring 55 to reset. At this time, the collection frame 51 can be opened to clean the impurities in the collection frame 51.

[0052] An extrusion plate 56, which is adapted to the size of the collection frame 51, is fixedly installed on the sealing plate 53;

[0053] The squeezing plate 56 moves together with the sealing plate 53. When the second spring 54 drives the sealing plate 53 to reset, the sealing plate 53 will squeeze the impurities in the collection frame 51, compressing the impurities, which makes it easier to clean and also makes it easier to collect more impurities during use.

[0054] Working principle: During operation, airflow enters the housing 10 through the air inlet 15. Refrigerant flows through the pipe 14. Heat exchange occurs when air contacts the surface of the pipe 14. When some of the heat-exchanged air flows to the separating frame 24, it flows into the separating shell 21 along the separating frame 24 and exits through the second air outlet 27. Airflow that has not reached its final temperature can be transported through the second air outlet 27 to areas requiring lower temperatures, achieving secondary heat utilization. The temperature sensor, in conjunction with the drive unit 25, controls the position of the separating frame 24 based on the air temperature, allowing air of the appropriate temperature to enter the separating shell 21. The temperature sensor, in conjunction with the electric telescopic rod, controls the extension and retraction of the separating frame 24 within the separating shell 21 based on the air temperature. The position of the partition frame 24 is adjusted to allow air of the appropriate temperature to enter the partition shell 21. During the movement of the partition frame 24 driven by the drive component 25, the first spring 233 ensures that the movable plate 231 and the extension plate 232 always seal and separate the area inside the partition shell 21 from the area inside the shell 10. Air from the area inside the shell 10 can only enter the partition shell 21 through the partition frame 24, ensuring the accuracy of the air temperature entering the partition shell 21. When the air flows through the spiral baffle 31, the air will spiral within the shell 10, fully contacting the through pipe 14 for heat exchange, improving heat exchange efficiency. Simultaneously, after the air has been inside the shell 10 for a long time, impurities in the air will adhere to the through pipe 14. When the drive component 25 moves the partition shell 21 back and forth... During operation, the spiral baffle 31 will remove impurities from the surface of the through pipe 14, preventing them from adhering to the through pipe 14 and affecting heat exchange efficiency. When the airflow passes through the spiral baffle 31, it will contact the turbulence blades 34, causing the turbulence blades 34 and the first rotating shaft 33 to rotate. This can enhance the turbulence of the airflow within the shell 10, allowing for more thorough contact with the through pipe 14 for heat exchange, further improving heat exchange efficiency. The filter screen 26 can prevent impurities scraped off the through pipe 14 from entering the separating shell 21 with the airflow. When the airflow flows within the shell 10, it will drive the fan blades 42 and the second rotating shaft 41 to rotate, further enhancing the turbulence of the airflow and strengthening heat exchange. At the same time, when the second rotating shaft 41 rotates, it will cause the rubber strip 43 to strike the through pipe 14, causing the through pipe 14 to... Slight vibrations facilitate the sliding and cleaning of the spiral baffle 31 on the through pipe 14, making it easier for impurities to fall off and preventing secondary adhesion to the through pipe 14. When air enters the housing 10 along the first air inlet 15 and flows toward the first air outlet 16, the air contacts the force ring 55, which will drive the sealing plate 53 to move into the slide groove 52 and squeeze the second spring 54. When the sealing plate 53 moves, the collection frame 51 will be in an open state. The heavier impurities that are scraped off will fall into the collection frame 51 and be collected when they move to below the first air outlet 16. After the airflow no longer enters the housing 10, the second spring 54 will drive the sealing plate 53 and the force ring 55 to reset. At this time, the collection frame 51 can be opened to clean the impurities in the collection frame 51.The squeezing plate 56 moves together with the sealing plate 53. When the second spring 54 drives the sealing plate 53 to reset, the sealing plate 53 will squeeze the impurities in the collection frame 51, compressing the impurities to facilitate cleaning and also making it easier to collect more impurities during use.

[0055] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A novel shell-and-tube heat exchanger, comprising a shell (10), characterized in that: The housing (10) is provided with a refrigerant inlet (11), a pair of partitions (13) are fixedly installed inside the housing (10), a plurality of pipes (14) for refrigerant flow are fixedly installed on the partitions (13), a refrigerant outlet (12) is provided on the housing (10), an air inlet (15) is provided on the housing (10), and a first air outlet (16) is provided on the housing (10). A partitioning mechanism (20) is provided on the housing (10). The partitioning mechanism (20) includes a partition shell (21) fixedly installed on the housing (10). The partition shell (21) is provided with a second air outlet (27). The housing (10) has a pair of mounting cavities (22). A partition frame (24) is connected to the mounting cavity (22) through a connector (23). A temperature sensor is provided in the partition frame (24). A pair of driving components (25) for adjusting the position of the partition frame (24) are fixedly installed on the partition shell (21). The connector (23) separates the partition shell (21) from the cavity inside the housing (10) and connects them through the partition frame (24). Airflow that has not reached the final temperature can be transported to the area with a lower temperature requirement through the second air outlet (27) to realize the secondary utilization of heat. The driving component (25) is an electric telescopic rod, which is electrically connected to the temperature sensor; The connector (23) includes a movable plate (231) that is slidably connected to the mounting cavity (22), an extension plate (232) is slidably installed in the movable plate (231), and a first spring (233) is provided between the extension plate (232) and the movable plate (231). The housing (10) is provided with a collection component (50) for collecting impurities inside the housing (10). The collection assembly (50) includes a collection frame (51) fixedly installed on the housing (10). A groove (52) is provided inside the housing (10). A sealing plate (53) is slidably installed in the groove (52). A second spring (54) is fixedly installed on the sealing plate (53). One end of the second spring (54) away from the sealing plate (53) is fixedly connected to the inner wall of the groove (52). A force-receiving ring (55) that cooperates with the airflow is fixedly installed on the sealing plate (53). An extrusion plate (56) that is adapted to the size of the collection frame (51) is fixedly installed on the sealing plate (53).

2. The novel shell-and-tube heat exchanger according to claim 1, characterized in that: The housing (10) is provided with a flow-dispersing component (30), which includes a spiral baffle (31) fixedly installed on the partition frame. The spiral baffle (31) is slidably connected to the through pipe (14). The spiral baffle (31) can clean the surface of the through pipe (14) when it moves with the partition frame.

3. The novel shell-and-tube heat exchanger according to claim 2, characterized in that: The spiral baffle (31) has several mounting ports (32), and a first rotating shaft (33) is rotatably mounted in the mounting port (32). A turbulence blade (34) is fixedly mounted on the first rotating shaft (33).

4. The novel shell-and-tube heat exchanger according to claim 3, characterized in that: The separator (24) is fixedly equipped with a filter (26) to prevent impurities in the air from entering the separator shell (21) with the airflow.

5. The novel shell-and-tube heat exchanger according to claim 4, characterized in that: An auxiliary component (40) is provided on the spiral baffle (31). The auxiliary component (40) includes a second rotating shaft (41) rotatably mounted on the spiral baffle (31). A fan blade (42) is fixedly mounted on the second rotating shaft (41). Several rubber strips (43) are fixedly mounted on the second rotating shaft (41).

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