A heat exchange mechanism under a low-pressure environment

Abstract

The present invention relates to a heat exchange mechanism in a low-pressure environment, belonging to the technical field of heat exchangers. A heat exchange mechanism in a low-pressure environment includes a first fixing plate and a second fixing plate. A plurality of heat exchange tubes are rotatably arranged between the first fixing plate and the second fixing plate. A plurality of rotating tubes are rotatably arranged at the centers inside the heat exchange tubes between the first fixing plate and the second fixing plate. A plurality of driving components are rotatably sleeved on the plurality of rotating tubes inside the heat exchange tubes. A plurality of scraping components are arranged on the outer sides of the driving components. A plurality of water spraying components for spraying water to one side of the driving components are fixedly communicated with the outer sides of the plurality of rotating tubes. Connection components connected to the heat exchange tubes are arranged at both ends of the plurality of rotating tubes. In the present invention, the driving components and the scraping components are driven to rotate by the water spraying components. On the one hand, the scale on the inner wall of the heat exchange tubes can be scraped off, and on the other hand, the water can be stirred to improve the heat transfer efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchangers, and particularly relates to a heat exchange mechanism under a low-pressure environment. Background Art

[0002] A relatively large storage battery is required inside an aircraft for power supply. The storage battery generates heat during use. With the expansion of the use range of the storage battery, and since the low pressure formed during the flight of the aircraft is not conducive to heat dissipation, higher requirements are put forward for the heat dissipation performance of the storage battery. Conventionally, the storage battery is mainly cooled by a heat exchanger.

[0003] For example, in a Chinese utility model patent with the publication number CN204128420U and the name of a heat exchanger assembly, it specifically includes a fluid transfer layer and a first outer layer. The fluid transfer layer is made of an elastomeric material, and the first outer layer includes flexible graphite. The fluid transfer layer includes at least one channel and is configured to form a passage for receiving a heat transfer fluid between the channel and a part of the first outer layer. Although the above prior art can receive the heat transfer fluid through the passage, the storage battery of a large aircraft is relatively large, and the aircraft is in a low-pressure environment with relatively high heat generation, which easily heats the fluid. Since water is generally used for heat transfer in the fluid and there are impurities in the water, scale generated during long-term heating is easily adhered to the inner wall of the channel. If not cleaned, it is easy to cause heat transfer obstruction. Therefore, a heat exchange mechanism under a low-pressure environment is now needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat exchange mechanism under a low-pressure environment with a simple structure and reasonable design to solve the above problems.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] A heat exchange mechanism under a low-pressure environment includes a first fixing plate and a second fixing plate. A plurality of heat exchange tubes are rotatably arranged between the first fixing plate and the second fixing plate. A plurality of rotating tubes are rotatably arranged at the centers inside the heat exchange tubes between the first fixing plate and the second fixing plate. A transmission assembly is rotatably sleeved on each of the plurality of rotating tubes inside the heat exchange tubes. A plurality of scraping assemblies are arranged on the outer side of the transmission assembly. A plurality of water spraying assemblies for spraying water to one side of the transmission assembly are fixedly communicated with the outer sides of the plurality of rotating tubes. Connection assemblies connected to the heat exchange tubes are arranged at both ends of the plurality of rotating tubes.

[0007] As a further optimized solution of the present invention, the transmission assembly includes a rotating ring rotatably sleeved on the outer side of the rotating tube. A plurality of arc-shaped plates are fixedly arranged at equal intervals on the outer circumference of the rotating ring. A rotating plate fixedly connected to the plurality of arc-shaped plates is fixedly arranged at the edge of the rotating ring.

[0008] As a further optimized solution of the present invention, the scraping assembly includes a fixed rod fixedly arranged on the outer side of the rotating plate. One end of the fixed rod is fixedly provided with a laterally arranged scraper, and one side of several of the scrapers is attached to the inner side wall of the heat exchange tube.

[0009] As a further optimized solution of the present invention, the water spraying assembly includes several first water spray pipes fixedly and equidistantly arranged in a circumferential manner on the outer side of the rotating tube. One end of several of the first water spray pipes is fixedly communicated with several second water spray pipes that spray water obliquely towards the arc-shaped plate.

[0010] As a further optimized solution of the present invention, the connecting assembly includes fixed rings fixedly sleeved on both ends of the rotating tube. The outer side of the fixed ring is fixedly provided with several connecting rods fixedly connected to the inner side wall of the heat exchange tube.

[0011] As a further optimized solution of the present invention, both ends of several of the heat exchange tubes are respectively hermetically connected with sealing bearings that are hermetically and rotatably connected to the first fixed plate and the second fixed plate.

[0012] As a further optimized solution of the present invention, several second flow conversion holes communicating with the inner side of one end of the heat exchange tube are penetrated and provided on one side of the first fixed plate, and several first flow conversion holes communicating with the inner side of the other end of the heat exchange tube are penetrated and provided on one side of the second fixed plate.

[0013] As a further optimized solution of the present invention, a first semi-circular tube connecting adjacent heat exchange tubes and the rotating tube is fixedly arranged on one side of the second fixed plate, and a second semi-circular tube connecting adjacent heat exchange tubes and the rotating tube is fixedly arranged on one side of the first fixed plate.

[0014] As a further optimized solution of the present invention, a rotating joint rotatably communicating with the end rotating tube is fixedly arranged on one side of the first fixed plate, and a water inlet pipe is fixedly communicated with one end of the rotating joint.

[0015] As a further optimized solution of the present invention, several heat dissipation fins are fixedly sleeved on the outer sides of several of the heat exchange tubes, and several heat dissipation fins on adjacent two heat exchange tubes are distributed in a staggered manner.

[0016] The beneficial effects of the present invention are as follows:

[0017] In the present invention, by pumping water into the inlet pipe through a water pump, water can enter the interior of the rotating pipe through the adapter, and finally be ejected through a plurality of second spray pipes on the outer side of the rotating pipe. Since the spraying angles of the plurality of second spray pipes are inclined, the high-pressure water from the plurality of second spray pipes is sprayed obliquely onto one side of the arc-shaped plate, pushing the plurality of arc-shaped plates to rotate, thereby driving the rotating ring and the rotating plate to rotate on the outer side of the rotating pipe, driving the plurality of fixing rods on the outer side of the rotating plate to rotate, and further driving the scraper to rotate and scrape on the inner wall of the heat exchange pipe, so that the scale adhering to the inner wall of the heat exchange pipe can be scraped off, preventing the scale from adhering to the inner wall of the heat exchange pipe during the long-term heat transfer process and avoiding affecting the heat transfer efficiency.

[0018] In the present invention, by the inclined water spraying of the plurality of second spray pipes, since the water ejection will generate a reverse thrust on the second spray pipes, the rotating pipe will be reversely pushed to rotate, making the rotation direction of the rotating pipe opposite to the rotation directions of the arc-shaped plate, the rotating ring and the rotating plate, driving the fixing rings and the connecting rods at both ends of the rotating pipe to rotate, and thus driving the heat exchange pipe to rotate together with the rotating pipe, making the rotation direction of the heat exchange pipe the same as that of the rotating pipe, and making the rotation direction of the heat exchange pipe opposite to that of the scraper. On the one hand, it enables the scraper to better scrape off the scale, and on the other hand, since the water ejected from the second spray pipes will flow into the interior of the heat exchange pipe, the reversely rotating scraper can stir the water inside the heat exchange pipe, improving the heat transfer effect on the outer side of the heat exchange pipe. Also, through the rotation of the heat exchange pipe, the plurality of heat dissipation fins on the outer side of the heat exchange pipe can be driven to rotate, improving the heat transfer efficiency from the heat dissipation fins to the inner side of the heat exchange pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the schematic diagram of the first internal overall structure of the heat exchange pipe of the present invention;

[0020] Figure 2 is the schematic diagram of the second internal overall structure of the heat exchange pipe of the present invention;

[0021] Figure 3 is the schematic diagram of the third internal overall structure of the heat exchange pipe of the present invention;

[0022] Figure 4 is the schematic diagram of the overall structure of the present invention;

[0023] Figure 5 is the present invention Figure 1 enlarged view at A in;

[0024] Figure 6 is the present invention Figure 1 enlarged view at B in;

[0025] Figure 7 is the present invention Figure 1 enlarged view at C in;

[0026] Figure 8 is the enlarged view of part D in the present invention Figure 2 ;

[0027] Figure 9 is the enlarged view of part E in the present invention Figure 3 ;

[0028] In the figure: 1. First fixed plate; 2. Heat exchange tube; 3. Rotating tube; 4. Transmission assembly; 401. Rotating ring; 402. Arc plate; 403. Rotating plate; 5. Water spraying assembly; 501. First water spraying pipe; 502. Second water spraying pipe; 6. Scraping assembly; 601. Fixed rod; 602. Scraper; 7. Second fixed plate; 8. First flow conversion hole; 9. Second flow conversion hole; 10. Connection assembly; 1001. Fixed ring; 1002. Connecting rod; 11. Sealing bearing; 12. Heat dissipation fin; 13. First semi-circular tube; 14. Second semi-circular tube; 15. Adapter; 16. Water inlet pipe. Specific embodiments

[0029] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Embodiment: As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , a heat exchange mechanism under a low-pressure environment includes a first fixed plate 1 and a second fixed plate 7. The first fixed plate 1 and the second fixed plate 7 are arranged parallel to each other. A plurality of heat exchange tubes 2 are rotatably arranged between the first fixed plate 1 and the second fixed plate 7. In this embodiment, only four heat exchange tubes 2 are shown, and the specific number can be flexibly adjusted according to the volume of the battery and the heat dissipation requirements. A plurality of heat dissipation fins 12 are fixedly sleeved on the outer sides of the four heat exchange tubes 2. The plurality of heat dissipation fins 12 on adjacent two heat exchange tubes 2 are staggered. By the staggered plurality of heat dissipation fins 12, the heat contact area with the air can be increased, and the heat transfer efficiency can be improved. The two ends of the four heat exchange tubes 2 are respectively hermetically connected with sealing bearings 11 that are hermetically connected to the first fixed plate 1 and the second fixed plate 7. Through the sealing bearings 11, the four heat exchange tubes 2 can rotate between the first fixed plate 1 and the second fixed plate 7 and will not leak liquid.

[0031] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown in the figure, four rotating pipes 3 are rotatably arranged between the first fixed plate 1 and the second fixed plate 7, and are respectively located at the inner center of the heat exchange pipes 2. One end of the first rotating pipe 3 at the end penetrates through the first fixed plate 1 rotatably, and the other end of the first rotating pipe 3 at the end is rotatably sealed on one side of the second fixed plate 7. One end of the second rotating pipe 3 at the end is rotatably sealed on one side of the first fixed plate 1, and the other end of the second rotating pipe 3 at the end penetrates through the second fixed plate 7 rotatably, and so on. That is, the connection relationships between adjacent rotating pipes 3 and the first fixed plate 1 and the second fixed plate 7 are opposite. A number of second flow conversion holes 9 communicating with the inner side of one end of the heat exchange pipes 2 are penetrated and opened on one side of the first fixed plate 1, and a number of second flow conversion holes 9 are arranged at equal circumferential distances between the rotating pipes 3 and the heat exchange pipes 2. A number of first flow conversion holes 8 communicating with the inner side of the other end of the heat exchange pipes 2 are penetrated and opened on one side of the second fixed plate 7, and a number of first flow conversion holes 8 are arranged at equal circumferential distances between the rotating pipes 3 and the heat exchange pipes 2. A first semi-circular pipe 13 for connecting adjacent heat exchange pipes 2 and rotating pipes 3 is fixedly arranged on one side of the second fixed plate 7. Through the first semi-circular pipe 13, one end of the rotating pipe 3 can be communicated with a number of first flow conversion holes 8. A second semi-circular pipe 14 for connecting adjacent heat exchange pipes 2 and rotating pipes 3 is fixedly arranged on one side of the first fixed plate 1. Through the second semi-circular pipe 14, one end of the rotating pipe 3 can be communicated with a number of second flow conversion holes 9. A rotary joint 15 rotatably communicating with the rotating pipe 3 at the end is fixedly arranged on one side of the first fixed plate 1. One end of the rotary joint 15 is fixedly communicated with a water inlet pipe 16. A number of water spraying assemblies 5 for spraying water towards one side of the transmission assembly 4 are fixedly communicated with the outer sides of a number of rotating pipes 3. One end of the water inlet pipe 16 is fixedly communicated with a water pump (not shown in the figure), and one end of the water pump is connected to a water tank (not shown in the figure). Through the water pump, the water inside the water tank can be pumped into the water inlet pipe 16, and then the water can flow into the inside of the rotating pipe 3 through the rotary joint 15. Finally, the water is sprayed between the rotating pipe 3 and the heat exchange pipes 2 through the water spraying assemblies 5 on the outer side of the rotating pipe 3, and then flows into a plurality of rotating pipes 3 and heat exchange pipes 2 in sequence through the first semi-circular pipe 13, the first flow conversion holes 8, the second flow conversion holes 9 and the second semi-circular pipe 14, so that heat transfer occurs for the heat on the outer side of the heat exchange pipes 2.

[0032] As Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 , Figure 9As shown in the figure, a driving assembly 4 is rotatably sleeved on each of several rotary pipes 3 and is located inside the heat exchange pipe 2. In this embodiment, two driving assemblies 4 are arranged on one rotary pipe 3, and the specific number can be flexibly adjusted. The driving assembly 4 includes a rotary ring 401 rotatably sleeved on the outer side of the rotary pipe 3. A number of arc-shaped plates 402 are equidistantly and fixedly arranged on the outer circumference of the rotary ring 401. The number of arc-shaped plates 402 adopts an arc structure. Through the arc structure, the contact area between the arc-shaped plates 402 and water can be increased, and the rotation of a number of arc-shaped plates 402 can be better driven by the water flow. A rotary plate 403 fixedly connected to a number of arc-shaped plates 402 at the same time is fixedly arranged at the edge of the rotary ring 401. The diameter of the rotary plate 403 is smaller than the inner cavity diameter of the heat exchange pipe 2. A number of scraping assemblies 6 are arranged outside the driving assembly 4. The scraping assembly 6 includes a fixed rod 601 fixedly arranged on the outer side of the rotary plate 403. A laterally arranged scraping plate 602 is fixedly arranged at one end of the fixed rod 601. A rubber strip (not shown in the figure) is arranged on one side of the scraping plate 602. Through the rubber strip, damage to the inner wall of the heat exchange pipe 2 can be prevented during the process of scraping scale. One side of a number of scraping plates 602 is attached to the inner wall of the heat exchange pipe 2. The water spraying assembly 5 includes a number of first water spraying pipes 501 fixedly and communicatively arranged on the outer side of the rotary pipe 3 at equal circumferential intervals. A number of first water spraying pipes 501 are inclined outward along the rotary pipe 3. One end of a number of first water spraying pipes 501 is fixedly communicated with a number of second water spraying pipes 502 that spray water obliquely towards the arc-shaped plates 402. The water outlet end of the second water spraying pipe 502 is inclined towards one side of the concave arc surface of the arc-shaped plate 402. Connection assemblies 10 are arranged at both ends of each rotary pipe 3 and are connected to the heat exchange pipe 2. The connection assembly 10 includes fixing rings 1001 fixedly sleeved on both ends of the rotary pipe 3. A number of connecting rods 1002 fixedly connected to the inner wall of the heat exchange pipe 2 are fixedly arranged on the outer side of the fixing rings 1001. Through the fixing rings 1001 and the connecting rods 1002, when the rotary pipe 3 rotates, the heat exchange pipe 2 can be driven to rotate in the same direction. During use, the water pump pumps the cooling water in the water tank into the interior of the water inlet pipe 16, and then through the adapter 15, the cooling water is introduced into the inner side of the rotary pipe 3, and then can enter the inner sides of a number of first water spraying pipes 501 outside the rotary pipe 3, and finally is obliquely sprayed out through a number of second water spraying pipes 502. Since the water spraying will generate a reverse thrust on the second water spraying pipe 502, the first water spraying pipe 501 and the rotary pipe 3 will be reversely pushed to rotate, so that the rotation direction of the rotary pipe 3 is opposite to the rotation directions of the arc-shaped plates 402, the rotary ring 401 and the rotary plate 403. The fixing rings 1001 and the connecting rods 1002 at both ends of the rotary pipe 3 are driven to rotate, and then the heat exchange pipe 2 can be driven to rotate together with the rotary pipe 3, so that the rotation direction of the heat exchange pipe 2 is consistent with the rotation direction of the rotary pipe 3, and the rotation direction of the heat exchange pipe 2 can be opposite to the rotation direction of the scraping plate 602. On the one hand, the scraping plate 602 can better scrape the scale, improving the heat transfer efficiency of the heat exchange pipe 2. On the other hand, since the water sprayed out by the second water spraying pipe 502 will flow into the interior of the heat exchange pipe 2, the water inside the heat exchange pipe 2 can be stirred by the reversely rotating scraping plate 602.To improve the heat transfer effect on the outer side of the heat exchange tube 2, the rotation of the heat exchange tube 2 can also be used to drive the rotation of multiple heat dissipation fins 12 on the outer side of the heat exchange tube 2, improve the heat transfer efficiency from the heat dissipation fins 12 to the inner side of the heat exchange tube 2, and enable the aircraft to dissipate heat quickly in a low-pressure environment.

[0033] It should be noted that for this heat exchange mechanism in a low-pressure environment, during use, first, the cooling water in the water tank is pumped into the interior of the water inlet pipe 16 by a water pump, and then through the adapter 15, the cooling water enters the inner side of the rotating pipe 3, and then enters the inner sides of multiple first spray pipes 501 on the outer side of the rotating pipe 3. Finally, it is sprayed obliquely through multiple second spray pipes 502. Since the water spray will generate a reverse thrust on the second spray pipes 502, it will reversely push the first spray pipes 501 and the rotating pipe 3 to rotate, making the rotation direction of the rotating pipe 3 opposite to the rotation directions of the arc-shaped plate 402, the rotating ring 401, and the rotating plate 403. This drives the fixed rings 1001 and the connecting rods 1002 at both ends of the rotating pipe 3 to rotate, and then drives the heat exchange tube 2 to rotate together with the rotating pipe 3, making the rotation direction of the heat exchange tube 2 the same as that of the rotating pipe 3. Since the second spray pipes 502 are sprayed obliquely onto the concave arc surface of the arc-shaped plate 402, it pushes multiple arc-shaped plates 402 to rotate, and then drives the rotating ring 401 and the rotating plate 403 to rotate on the outer side of the rotating pipe 3, driving the rotation of multiple fixing rods 601 on the outer side of the rotating plate 403, and then driving the scraper 602 to rotate and scrape on the inner wall of the heat exchange tube 2. This can scrape off the scale adhered to the inner wall of the heat exchange tube 2, and can also stir the water inside the heat exchange tube 2, improve the heat transfer effect on the outer side of the heat exchange tube 2. At the same time, through the rotation of the heat exchange tube 2, it drives the rotation of multiple heat dissipation fins 12 on the outer side of the heat exchange tube 2, increases the contact area and effect of the heat dissipation fins 12 with the heat in the air, and improves the heat transfer efficiency from the heat dissipation fins 12 to the inner side of the heat exchange tube 2.

[0034] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A heat exchange mechanism in a low pressure environment, comprising a first fixing plate (1) and a second fixing plate (7), characterized in that: A plurality of heat exchange tubes (2) are rotatably arranged between the first fixed plate (1) and the second fixed plate (7); a plurality of rotating tubes (3) are rotatably arranged between the first fixed plate (1) and the second fixed plate (7) and are respectively located at the inner center of the heat exchange tube (2); a transmission assembly (4) located at the inner side of the heat exchange tube (2) is rotatably sleeved on the plurality of rotating tubes (3); a plurality of scraping assemblies (6) are arranged on the outer side of the transmission assembly (4); a plurality of water spraying assemblies (5) for spraying water toward one side of the transmission assembly (4) are fixedly connected to the outer side of the plurality of rotating tubes (3); and connection assemblies (10) connected to the heat exchange tube (2) are arranged at both ends of the plurality of rotating tubes (3); The transmission assembly (4) comprises a rotating ring (401) rotatably sleeved on the outside of the rotating tube (3), a plurality of arc-shaped plates (402) being fixedly arranged at equal intervals on the outer circumference of the rotating ring (401), and a rotating plate (403) fixedly connected to the plurality of arc-shaped plates (402) being fixedly arranged on the edge of the rotating ring (401); The water spray assembly (5) comprises a plurality of first water spray pipes (501) which are circumferentially equidistantly fixedly connected and arranged outside the rotating pipe (3); one end of the plurality of first water spray pipes (501) is fixedly connected to a plurality of second water spray pipes (502) which spray water obliquely toward the arc plate (402).

2. The heat exchange mechanism in a low pressure environment according to claim 1, characterized in that: The scraping assembly (6) comprises a fixed rod (601) fixedly arranged on the outside of the rotating plate (403), one end of the fixed rod (601) being fixedly provided with a transversely arranged scraper (602), one side of a plurality of the scrapers (602) being in contact with the inner wall of the heat exchange tube (2).

3. The heat exchange mechanism in a low pressure environment according to claim 1, characterized in that: The connection assembly (10) comprises a fixing ring (1001) fixedly sleeved on both ends of the rotating tube (3), and a plurality of connecting rods (1002) fixedly connected to the inner wall of the heat exchange tube (2) are fixedly arranged on the outer side of the fixing ring (1001).

4. The heat exchange mechanism in a low pressure environment according to claim 3, characterized in that: Both ends of the plurality of heat exchange tubes (2) are respectively sealed with sealed bearings (11) which are sealed with the first fixed plate (1) and the second fixed plate (7).

5. The heat exchange mechanism in a low pressure environment according to claim 4, characterized in that: A plurality of second flow exchange holes (9) communicating with the inner side of one end of the heat exchange tube (2) are formed through one side of the first fixing plate (1), and a plurality of first flow exchange holes (8) communicating with the inner side of the other end of the heat exchange tube (2) are formed through one side of the second fixing plate (7).

6. The heat exchange mechanism in a low pressure environment according to claim 5, characterized in that: A first semicircular tube (13) for connecting adjacent heat exchange tubes (2) with the rotating tube (3) is fixedly provided on one side of the second fixed plate (7), and a second semicircular tube (14) for connecting adjacent heat exchange tubes (2) with the rotating tube (3) is fixedly provided on one side of the first fixed plate (1).

7. The heat exchange mechanism in a low pressure environment according to claim 6, characterized in that: A conversion joint (15) is fixedly provided on one side of the first fixed plate (1) and is rotatably connected to the end rotation pipe (3); one end of the conversion joint (15) is fixedly connected to a water inlet pipe (16).

8. A heat exchange mechanism in a low pressure environment according to any one of claims 1 to 7, characterized in that: A plurality of heat exchange fins (12) are fixedly sleeved on the outer sides of the plurality of heat exchange tubes (2), and the plurality of heat exchange fins (12) on two adjacent heat exchange tubes (2) are staggeredly distributed.

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