Novel shell and tube heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, and discloses a novel shell and tube heat exchanger which comprises a shell, a refrigerant inlet is formed in the shell, a pair of partition plates are fixedly installed in the shell, a plurality of through pipes used for refrigerant circulation are fixedly installed on the partition plates, a refrigerant outlet is formed in the shell, and the refrigerant inlet is communicated with the refrigerant outlet. An air inlet is formed in the shell; according to the partition mechanism arranged on the shell, airflow enters the shell along the air inlet, a refrigerant circulates in the through pipe, heat exchange is conducted when the air makes contact with the surface of the through pipe, and when part of the air subjected to heat exchange flows to the partition frame, the air flows into the partition shell along the partition frame and flows out along the second air outlet; the air flow not reaching the final temperature can be conveyed to the area with the low temperature requirement through the second air outlet, secondary utilization of heat is achieved, the temperature sensor can be matched with the driving piece according to the air temperature to control the position of the distinguishing frame, and therefore air with the adaptive temperature can enter the distinguishing shell.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and more specifically, to a novel shell-and-tube heat exchanger. Background Art

[0002] A shell-and-tube heat exchanger, also known as a tubular heat exchanger, is a type of wall-type heat exchange device with the tube wall surface in a closed shell as the heat transfer surface. Specifically, one fluid flows inside the tube and the other flows outside the tube, and heat is transferred through the tube wall.

[0003] The existing Chinese patent with the publication number CN119353949A discloses a shell-and-tube heat exchanger, including: a shell, a first end cover, a second end cover, several heat exchange tubes, and a fluid guide tube; the shell is in a cylindrical structure, and the side walls at both ends are respectively provided with a cold fluid inlet and a cold fluid outlet. The first end cover and the second end cover are arranged at both ends of the shell. There are tube sheets between the first end cover and the shell and between the second end cover and the shell. The first end cover is provided with a hot fluid inlet, and the second end cover is provided with a hot fluid outlet; several heat exchange tubes are arranged inside the shell, and both ends thereof are connected to the tube sheets to communicate the first end cover and the second end cover. A plurality of annular fins in a ring structure are arranged at intervals 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 along its axial direction until it abuts against the inner wall of the first end cover. A plurality of through holes are arranged on the side wall of the fluid guide tube close to the heat exchange tubes. With such a setting, the heat exchange efficiency of the heat exchanger can be improved.

[0004] Regarding the above and related existing technologies, the inventor believes that there are often the following defects: in the field of shell-and-tube heat exchangers, it is usually necessary to perform heat exchange on the air flow. The existing technology has deficiencies in heat utilization. The air flow can only be conveyed out of the equipment after reaching the preset temperature, and it is difficult to simultaneously convey to different regions with different temperature requirements synchronously to realize the secondary utilization of heat. At the same time, during long-term use, impurities in the air will adhere to the through tubes, affecting the heat exchange efficiency, and there are no effective impurity cleaning and collection measures. In addition, during the air flow heat exchange process, the heat exchange efficiency needs to be improved, and the existing structure is difficult to make the air flow fully contact the through tubes for heat exchange. Summary of the Invention

[0005] The present invention provides a novel shell-and-tube heat exchanger to solve the technical problems in the existing shell-and-tube heat exchanger technology, such as only being able to heat the air flow to a single preset temperature, being unable to realize multi-temperature zone diversion transportation and secondary utilization of heat, and having a low heat exchange utilization rate.

[0006] The present invention provides a novel shell-and-tube heat exchanger, including a shell, a refrigerant inlet is arranged on the shell, a pair of partition plates are fixedly installed inside the shell, several through tubes for refrigerant circulation are fixedly installed on the partition plates, a refrigerant outlet is arranged on the shell, an air inlet is arranged on the shell, and a first air outlet is arranged on the shell; A partition mechanism arranged on the housing. The partition mechanism includes a partition housing fixedly installed on the housing. A second air outlet is provided on the partition housing. A pair of installation cavities are formed on the housing. A partition frame is connected in the installation cavity through a connecting member. A temperature sensor is arranged in the partition frame. A pair of driving members for adjusting the position of the partition frame are fixedly installed on the partition housing. The connecting member divides the cavity in the housing from the partition housing and is communicated through the partition frame, and the air flow that has not reached the end temperature can be conveyed to the area with lower temperature requirements through the second air outlet, realizing the secondary utilization of heat.

[0007] As a further optimized solution of the present invention, the driving member is an electric telescopic rod, and the electric telescopic rod is electrically connected to the temperature sensor.

[0008] As a further optimized solution of the present invention, the connecting member includes a movable plate slidably connected to the installation cavity. An extension plate is slidably installed in the movable plate. A first spring is arranged between the extension plate and the movable plate.

[0009] As a further optimized solution of the present invention, a flow disturbance component is arranged in the housing. The flow disturbance component includes a spiral baffle fixedly installed on the partition frame. The spiral baffle is slidably connected to the through pipe, and the spiral baffle can clean the surface of the through pipe when moving along with the partition frame.

[0010] As a further optimized solution of the present invention, a plurality of installation openings are formed on the spiral baffle. A first rotating shaft is rotatably installed in the installation openings. A flow disturbance blade is fixedly installed on the first rotating shaft.

[0011] As a further optimized solution of the present invention, a filter screen for preventing impurities in the air from entering the partition frame along with the air flow is fixedly installed in the partition frame.

[0012] As a further optimized solution of the present invention, an auxiliary component is arranged on the spiral baffle. The auxiliary component includes a second rotating shaft rotatably installed on the spiral baffle. A fan blade is fixedly installed on the second rotating shaft. A plurality of rubber strips are fixedly installed on the second rotating shaft.

[0013] As a further optimized solution of the present invention, a collection component for collecting impurities in the housing is arranged on the housing.

[0014] As a further optimized solution of the present invention, the collection component includes a collection frame fixedly installed on the housing. A chute is formed in the housing. A sealing plate is slidably installed in the chute. 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 chute. A force receiving ring cooperating with the air flow is fixedly installed on the sealing plate.

[0015] As a further optimized solution of the present invention, an extrusion plate adapted to the size of the collection frame is fixedly installed on the sealing plate.

[0016] The beneficial effects of the present invention are as follows: 1. By setting the partition mechanism, the present invention can transport the air flow that has not reached the end temperature to the area with lower temperature requirements through the second air outlet, realizing the secondary utilization of heat. The temperature sensor and the driving member cooperate to control the position of the partition frame, so that the air with the appropriate temperature enters the partition housing.

[0017] 2. A flow disturbance component is arranged in the housing of the present invention, including a spiral baffle plate and flow disturbance vanes. When the air flows through the spiral baffle plate, it moves in a spiral motion, fully contacting and exchanging heat with the through pipe; the air flow drives the flow disturbance vanes to rotate, strengthening the air flow turbulence and further improving the heat exchange efficiency. The fan blades and rubber strips in the auxiliary component can also improve the air flow turbulence and help clean the through pipe, strengthening the heat exchange.

[0018] 3. The present invention is provided with a collection component, which uses the air flow to push the sealing plate to open the collection frame to collect impurities. After the air flow stops, the sealing plate resets. The extrusion plate on the sealing plate can compress the impurities in the collection frame, which is convenient for cleaning and can collect more impurities. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the cooperation between the partition plate and the through pipe in the present invention; Figure 3 is a schematic diagram of the structure of the partition mechanism in the present invention; Figure 4 is a schematic diagram of the structure of the connecting member in the present invention; Figure 5 is a schematic diagram of the structure of the flow disturbance component in the present invention; Figure 6 is a schematic diagram of the structure of the auxiliary component in the present invention; Figure 7 is a schematic diagram of the cooperation between the first rotating shaft and the flow disturbance vanes in the present invention; Figure 8 is a schematic diagram of the structure of the collection component in the present invention; Figure 9 is a schematic diagram of the cooperation between the sealing plate and the force receiving ring in the present invention.

[0020] In the figure: 10. Housing; 11. Refrigerant inlet; 12. Refrigerant outlet; 13. Partition plate; 14. Through pipe; 15. Air inlet; 16. First air outlet; 20. Partition mechanism; 21. Partition shell; 22. Installation cavity; 23. Connecting piece; 24. Partition frame; 25. Driving piece; 26. Filter screen; 27. Second air outlet; 231. Movable plate; 232. Extension plate; 233. First spring; 30. Turbulence component; 31. Spiral baffle; 32. Installation opening; 33. First rotating shaft; 34. Turbulence blade; 40. Auxiliary component; 41. Second rotating shaft; 42. Fan blade; 43. Rubber strip; 50. Collection component; 51. Collection frame; 52. Chute; 53. Sealing plate; 54. Second spring; 55. Force-bearing ring; 56. Extrusion plate. Detailed implementation manners

[0021] Now, the subject matter described herein will be discussed with reference to exemplary implementation manners. It should be understood that discussing these implementation manners is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0022] As Figures 1 to 4 shown, the novel shell-and-tube heat exchanger according to an embodiment of the present invention includes a housing 10, a refrigerant inlet 11 is provided on the housing 10, a pair of partition plates 13 are fixedly installed inside the housing 10, a plurality of through pipes 14 for refrigerant circulation are fixedly installed on the partition plates 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 partition mechanism 20 provided on the housing 10, the partition mechanism 20 includes a partition shell 21 fixedly installed on the housing 10, a second air outlet 27 is provided on the partition shell 21, a pair of installation cavities 22 are opened on the housing 10, a partition frame 24 is connected in the installation cavity 22 through a connecting piece 23, a temperature sensor is provided inside the partition frame 24, a pair of driving pieces 25 for adjusting the position of the partition frame 24 are fixedly installed on the partition shell 21, the connecting piece 23 divides the cavity inside the partition shell 21 and the housing 10 and is communicated through the partition frame 24, and the airflow that has not reached the end temperature can be conveyed to the area with a lower temperature requirement through the second air outlet 27, realizing the secondary utilization of heat.

[0023] During the operation of the present invention, the air flow enters the housing 10 along the air inlet 15, and the refrigerant flows in the through pipe 14. When the air contacts the surface of the through pipe 14, heat exchange occurs. When a part of the air that has undergone heat exchange flows to the partition frame 24, it will flow into the partition housing 21 along the partition frame 24 and flow out along the second air outlet 27. The air flow that has not reached the end 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 temperature sensor can cooperate with the driving member 25 to control the position of the partition frame 24 according to the temperature of the air, so as to allow the air with the appropriate temperature to enter the partition housing 21.

[0024] As Figure 4 shown, the driving member 25 is an electric telescopic rod, and the electric telescopic rod is electrically connected to the temperature sensor; the temperature sensor can cooperate with the electric telescopic rod to control the position of the partition frame 24 in the partition housing 21 according to the temperature of the air, so as to allow the air with the appropriate temperature to enter the partition housing 21.

[0025] As Figure 4 shown, the connecting member 23 includes a movable plate 231 slidably connected to the installation cavity 22. An extension plate 232 is slidably installed in the movable plate 231, and a first spring 233 is arranged between the extension plate 232 and the movable plate 231; During the process of the driving member 25 driving the partition frame 24 to move, the first spring 233 enables the movable plate 231 and the extension plate 232 to always seal and separate the area inside the partition housing 21 and the area inside the housing 10. The area inside the housing 10 can only enter the partition housing 21 through the partition frame 24, ensuring the temperature accuracy of the air entering the partition housing 21.

[0026] As Figure 5 shown, a flow disturbing component 30 is arranged inside the housing 10. The flow disturbing 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, and the spiral baffle 31 can clean the surface of the through pipe 14 when moving along with the partition frame; When the air flows through the spiral baffle 31, the air will move spirally inside the housing 10, fully contact the through pipe 14 for heat exchange, and improve the heat exchange efficiency. At the same time, after the air enters the housing 10 for a long time, impurities in the air will adhere to the through pipe 14. When the driving member 25 drives the partition housing 21 to reciprocate, the spiral baffle 31 will scrape off the impurities on the surface of the through pipe 14, preventing the impurities from adhering to the through pipe 14 and affecting the heat exchange efficiency.

[0027] As Figures 5 to 7 shown, a plurality of installation openings 32 are formed in the spiral baffle 31, and a first rotating shaft 33 is rotatably installed in the installation openings 32. A flow disturbing blade 34 is fixedly installed on the first rotating shaft 33.

[0028] As shown Figure 5 In the figure, a filter screen 26 for preventing impurities in the air from entering the separation shell 21 along with the air flow is fixedly installed inside the separation frame 24; the filter screen 26 can prevent the impurities scraped off the through pipe 14 from entering the separation shell 21 along with the air flow.

[0029] As shown Figure 6 In the figure, an auxiliary component 40 is arranged on the spiral baffle 31. The auxiliary component 40 includes a second rotating shaft 41 rotatably installed on the spiral baffle 31. A fan blade 42 is fixedly installed on the second rotating shaft 41, and a plurality of rubber strips 43 are fixedly installed on the second rotating shaft 41; When the air flow flows inside the shell 10, it will drive the fan blade 42 and the second rotating shaft 41 to rotate, further improving the turbulence of the air flow and strengthening heat exchange. At the same time, when the second rotating shaft 41 rotates, it will drive the rubber strip 43 to knock on the through pipe 14, causing the through pipe 14 to vibrate slightly, which is conducive to the spiral baffle 31 sliding and cleaning on the through pipe 14, making it easier for impurities to fall off and preventing them from adhering to the through pipe 14 again.

[0030] As shown Figures 8 to 9 In the figure, a collection component 50 for collecting impurities inside the shell 10 is arranged on the shell 10. The collection component 50 includes a collection frame 51 fixedly installed on the shell 10. A chute 52 is opened inside the shell 10. A sealing plate 53 is slidably installed in the chute 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 chute 52. A force-receiving ring 55 cooperating with the air flow is fixedly installed on the sealing plate 53; When the air enters the shell 10 along the first air inlet 15 and flows towards the first air outlet 16, the contact between the air and the force-receiving ring 55 will drive the sealing plate 53 to move into the chute 52 and compress the second spring 54. When the sealing plate 53 moves, the collection frame 51 will be in an open state. When the heavier scraped-off impurities move to below the first air outlet 16, they will fall into the collection frame 51 to complete collection. After the air flow no longer enters the shell 10, the second spring 54 will drive the sealing plate 53 and the force-receiving ring 55 to reset. At this time, opening the collection frame 51 can clean the impurities in the collection frame 51.

[0031] An extrusion plate 56 adapted to the size of the collection frame 51 is fixedly installed on the sealing plate 53; The extrusion 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 extrude the impurities in the collection frame 51, compressing the impurities, which is convenient for cleaning and can also facilitate collecting more impurities during use.

[0032] Working principle: During operation, the air flow enters the housing 10 along the air inlet 15, and the refrigerant flows through the through pipe 14. When the air contacts the surface of the through pipe 14, heat exchange occurs. When part of the air that has undergone heat exchange flows to the partition frame 24, it will flow into the partition housing 21 along the partition frame 24 and flow out along the second air outlet 27. The air flow that has not reached the end temperature can be transported to the area with lower temperature requirements through the second air outlet 27 to achieve secondary utilization of heat. The temperature sensor can cooperate with the driving member 25 according to the air temperature to control the position of the partition frame 24 to allow the air with the appropriate temperature to enter the partition housing 21; the temperature sensor can cooperate with the electric telescopic rod to expand and contract to control the position of the partition frame 24 in the partition housing 21 according to the air temperature to allow the air with the appropriate temperature to enter the partition housing 21; during the process of the driving member 25 driving the partition frame 24 to move, the first spring 233 enables the movable plate 231 and the extension plate 232 to always be able to seal and separate the area inside the partition housing 21 and the area inside the housing 10. The area inside the housing 10 can only enter the partition housing 21 through the partition frame 24 to ensure the accuracy of the air temperature entering the partition housing 21; when the air flow passes through the spiral baffle 31, the air will move spirally inside the housing 10 and fully contact the through pipe 14 for heat exchange, improving the heat exchange efficiency. At the same time, after the air enters the housing 10 for a long time, the impurities in the air will adhere to the through pipe 14. When the driving member 25 drives the partition housing 21 to move back and forth, the spiral baffle 31 will scrape off the impurities on the surface of the through pipe 14 to prevent the impurities from adhering to the through pipe 14 and affecting the heat exchange efficiency; when the air flow passes through the spiral baffle 31, it will contact the spoiler blades 34 and drive the spoiler blades 34 and the first rotating shaft 33 to rotate, which can strengthen the turbulence of the air flow inside the housing 10 and make it contact the through pipe 14 more fully for heat exchange, further improving the heat exchange efficiency; the filter screen 26 can prevent the impurities scraped off from the through pipe 14 from entering the partition housing 21 along with the air flow; when the air flow flows inside the housing 10, it will drive the fan blades 42 and the second rotating shaft 41 to rotate, further improving the turbulence of the air flow and strengthening the heat exchange. At the same time, when the second rotating shaft 41 rotates, it will drive the rubber strip 43 to knock on the through pipe 14, causing the through pipe 14 to vibrate slightly, which is conducive to the spiral baffle 31 sliding and cleaning on the through pipe 14, making the impurities easier to fall off and avoiding secondary adhesion to the through pipe 14; when the air enters the housing 10 along the first air inlet 15 and flows towards the first air outlet 16, the air contacts the force receiving ring 55 and drives the sealing plate 53 to move into the chute 52 and compress the second spring 54. When the sealing plate 53 moves, the collection frame 51 will be in an open state. When the heavier impurities scraped off move to below the first air outlet 16, they will fall into the collection frame 51 to complete the collection. After the air flow no longer enters the housing 10, the second spring 54 will drive the sealing plate 53 and the force receiving ring 55 to reset. At this time, opening the collection frame 51 can clean the impurities in the collection frame 51;The extrusion 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 extrude the impurities in the collection frame 51, compress the impurities, which is convenient for cleaning and can also facilitate the collection of more impurities during use.

[0033] The embodiments of the present invention have been described above. However, these embodiments are not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A novel shell and tube heat exchanger, comprising a shell (10), characterized in that: The shell (10) is provided with a refrigerant inlet (11), a pair of partitions (13) are fixedly mounted in the shell (10), a plurality of through pipes (14) for circulating the refrigerant are fixedly mounted on the partitions (13), a refrigerant outlet (12) is provided on the shell (10), an air inlet (15) is provided on the shell (10), and a first air outlet (16) is provided on the shell (10); A partition mechanism (20) is arranged on a shell (10), the partition mechanism (20) comprising a partition shell (21) fixedly mounted on the shell (10), the partition shell (21) being provided with a second air outlet (27), the shell (10) being provided with a pair of mounting cavities (22), the mounting cavities (22) being connected to a partition frame (24) via a connecting piece (23), the partition frame (24) being provided with a temperature sensor, the partition shell (21) being fixedly mounted with a pair of driving pieces (25) for adjusting the position of the partition frame (24), the connecting piece (23) dividing the partition shell (21) and the cavity in the shell (10) and communicating them via the partition frame (24), so that airflow that has not reached the end temperature can be transported to an area with a lower temperature requirement via the second air outlet (27), thereby realizing secondary utilization of heat.

2. The novel shell and tube heat exchanger according to claim 1 is characterized in that: The driving member (25) is an electric telescopic rod, and the electric telescopic rod is electrically connected to the temperature sensor.

3. The novel shell and tube heat exchanger according to claim 2 is characterized in that: The connecting member (23) comprises a movable plate (231) slidably connected to the mounting cavity (22), an extension plate (232) is slidably mounted in the movable plate (231), and a first spring (233) is provided between the extension plate (232) and the movable plate (231).

4. The novel shell and tube heat exchanger according to claim 3 is characterized in that: A spoiler assembly (30) is arranged in the housing (10), and the spoiler assembly (30) comprises a spiral baffle (31) fixedly mounted on the partition frame, the spiral baffle (31) being slidably connected to the through pipe (14), and the spiral baffle (31) can clean the surface of the through pipe (14) when moving with the partition frame.

5. The novel shell and tube heat exchanger according to claim 4 is characterized in that: The spiral baffle (31) is provided with a plurality of mounting openings (32), a first rotating shaft (33) is rotatably mounted in the mounting opening (32), and a spoiler blade (34) is fixedly mounted on the first rotating shaft (33).

6. The novel shell and tube heat exchanger according to claim 5 is characterized in that: A filter (26) is fixedly installed in the differentiation frame (24) to prevent impurities in the air from following the airflow into the differentiation shell (21).

7. The novel shell and tube heat exchanger according to claim 6 is characterized in that: An auxiliary component (40) is provided on the spiral baffle (31), and the auxiliary component (40) comprises a second rotating shaft (41) rotatably mounted on the spiral baffle (31), a fan blade (42) being fixedly mounted on the second rotating shaft (41), and a plurality of rubber strips (43) being fixedly mounted on the second rotating shaft (41).

8. The novel shell and tube heat exchanger according to claim 7 is characterized in that: The housing (10) is provided with a collecting component (50) for collecting impurities in the housing (10).

9. The novel shell and tube heat exchanger according to claim 8 is characterized in that: The collecting assembly (50) comprises a collecting frame (51) fixedly mounted on a housing (10); a slide groove (52) is provided in the housing (10); a sealing plate (53) is slidably mounted in the slide groove (52); a second spring (54) is fixedly mounted on the sealing plate (53); an end of the second spring (54) away from the sealing plate (53) is fixedly connected to an inner wall of the slide groove (52); and a force ring (55) cooperating with the airflow is fixedly mounted on the sealing plate (53).

10. The novel shell and tube heat exchanger according to claim 9 is characterized in that: A squeezing plate (56) having a size matching that of the collecting frame (51) is fixedly mounted on the sealing plate (53).

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