Heat exchanger with spoiler structure

Abstract

The application discloses a heat exchanger with a spoiler structure, which comprises a plurality of heat exchange pipes, characterized in that a central shaft is arranged in the heat exchange pipe, a booster inlet is arranged at one end of the heat exchange pipe, the booster inlet is a conical cylinder with an outer diameter larger than an inner diameter, a plurality of wind wheels are arranged on the central shaft and are rotationally connected with the central shaft; the wind wheel comprises two fixed rings arranged at two sides, fins are uniformly and spacedly arranged between the two fixed rings; an axle ring is arranged in the middle of the fixed ring, the fixed ring is connected with the axle ring through a fixed arm, and the axle ring is sleeved on the central shaft. The heat exchanger has the advantages that the wind wheels and the booster inlets are appropriately arranged at the inlet and the middle part of the pipe, the wind walking mode in the pipe is changed through the wind wheels, the wind rotates at high speed through the heat exchange pipe, the wind speed is increased, the pipe wall can be effectively cleaned, and the high efficiency of the heat exchanger is maintained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchangers, in particular to a heat exchanger with a turbulence structure, a turbulence structure is additionally arranged in a tube heat exchanger. BACKGROUND

[0002] There are various heat exchange tubes for manufacturing various heat exchangers today, in order to improve the heat exchange efficiency of the heat exchange tube, people have continuously improved the structure of the heat exchange tube, at present, the better heat exchange tube is to insert a turbulence piece in the tube, most of such turbulence pieces are flat strip-shaped turbulence pieces, and a part of them are spiral-shaped turbulence pieces and brush wire-shaped turbulence pieces. After the flat strip-shaped turbulence pieces and the spiral-shaped turbulence pieces in the existing structure are inserted into the heat exchange tube, the heat exchange area in the tube cannot be greatly strengthened, the fluid in the tube cannot be communicated on both sides of the turbulence piece, and the fluid cannot be well disturbed, and the temperature of the fluid medium is not uniform. Although the brush wire-shaped turbulence piece can make the fluid in the tube communicate, it is easy to block and corrode and fall off, and the turbulence effect is not good.

[0003] In addition, when heat exchange of gas is carried out, dust and impurities in the gas are easy to deposit in the pipe wall or the turbulence assembly, especially when the turbulence assembly is fixed, there must be a part with poor flowability, which is particularly easy to get dust. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a heat exchanger with a turbulence structure, so that the flow of fluid is in irregular shape and is not easy to get dust.

[0005] The technical scheme adopted by the present application is: a heat exchanger with a turbulence structure, comprising a plurality of heat exchange tubes, characterized in that: a central shaft is arranged in the heat exchange tube, a booster port is arranged at one end of the heat exchange tube, the booster port is a conical cylinder with a large outer diameter and a small inner diameter, a plurality of wind wheels are arranged on the central shaft, and the wind wheels are rotationally connected with the central shaft.

[0006] The wind wheel comprises two fixed rings located on both sides, and fins are uniformly and spacedly arranged between the two fixed rings; an axle ring is arranged in the middle of the fixed ring, the fixed ring and the axle ring are connected through a fixed arm, and the axle ring is sleeved on the central shaft.

[0007] Further, the cross section of the fin along the axial direction of the heat exchange tube is arc-shaped; the cross section of the fin along the radial direction of the heat exchange tube is involute-shaped, and the center is wide and the two sides are narrow.

[0008] Further, the central shaft is fixedly connected with the inner wall of the heat exchange tube through a shaft support arm.

[0009] Further, the axle ring is axially positioned with the central shaft through a snap spring.

[0010] Further, the number of the wind wheels is 3-20.

[0011] Further: the fin both ends are provided with flanging, flanging and fixed ring welding connection.

[0012] The beneficial effects of the present application are:

[0013] The existing tube heat exchanger uses spoiler, which has limited acceleration of air flow and is bound to be covered with dust, which needs to be cleaned regularly. The present scheme appropriately adds wind wheel and booster port at the inlet and middle part of the tube, changes the running mode of the air in the tube through the wind wheel, makes it rotate at high speed through the heat exchange tube, increases the air speed, and can effectively clean the tube wall and maintain the high efficiency of the heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the internal structure of the heat exchange tube of the present application;

[0015] Figure 2 is a schematic diagram of the side view structure of the present application;

[0016] Figure 3 is Figure 2 A sectional view in the direction of A in figure.

[0017] The serial number in the figure is: 1 is the heat exchange tube, 2 is the center shaft, 3 is the booster port, 4 is the wind wheel, 5 is the fixed ring, 6 is the fin, 7 is the fixed arm, 8 is the shaft ring, 9 is the wind block, 10 is the shaft support arm. DETAILED DESCRIPTION

[0018] As Figures 1-3 shown is a heat exchanger with spoiler structure according to the present application, which comprises a plurality of heat exchange tubes 1, and other structures are prior art. The heat exchanger exchanges heat between internal and external media through the heat exchange tube. A center shaft 2 is fixedly arranged in the heat exchange tube. A booster port 3 is arranged at one end of the air inlet (or liquid inlet, according to the different media, here the air inlet is used for convenience) of the heat exchange tube. The booster port is a tapered cylinder with large outer diameter and small inner diameter. A plurality of wind wheels 4 are arranged on the center shaft. The wind wheel is rotatably connected with the center shaft and has a "lantern" shape, which can rotate along the center shaft under the action of fluid. The wind wheel comprises two fixed rings 5 arranged at both sides. Fins 6 are arranged between the two fixed rings. The fins are uniformly distributed in the circumferential direction of the fixed ring, and there is a gap between the two fins for fluid to pass through. An axle ring 8 is arranged in the middle of the fixed ring. The fixed ring and the axle ring are connected by a fixed arm 7. The axle ring is sleeved on the center shaft.

[0019] Preferably: the cross section of the fin along the axial direction of the heat exchange tube is arc-shaped; as Figure 2As shown, the cross section of the heat exchange pipe in the radial direction is a slanted line (not perpendicular to the diameter of the section), which can also be an arc line or an involute line (specifically a part of the involute line), so that the entire fin is arranged in an inclined manner, which makes it easier to rotate and reduces resistance, and the center of the radial width of the fin is the widest, gradually narrowing to both sides.

[0020] Preferably, the central shaft is fixedly connected to the inner wall of the heat exchange pipe through shaft support arms 10, and there are at least two groups of shaft support arms to ensure effective fixation of the central shaft.

[0021] Preferably, at least one collar of the wind wheel is axially positioned by a snap spring and the central shaft, so that the position of the wind wheel is fixed and will not be displaced on the central shaft due to wind force. If only one collar is axially fixed, the entire wind wheel will be stretched or shortened due to the elasticity of the fin when the wind force changes, so that the change of wind direction is more significant, and the heat exchange and dust removal effects are better. If two collars are axially fixed, the position of the wind wheel is more stable.

[0022] Preferably, the number of wind wheels is 3-20.

[0023] Preferably, the fin is provided with a flange at both ends, and the flange is welded or riveted to the fixing ring.

[0024] Preferably, a wind block 9 is arranged on the side of the wind wheel away from the air inlet, the wind block is connected to the inner wall of the fixing ring, and the wind block is provided with a through hole matched with the central shaft. The wind block makes the wind blow out from the side, and the turning effect is better.

[0025] The working process of the structure is as follows:

[0026] When heat exchange is performed, the wind (or fluid, etc.) enters from the air inlet, and when passing through the conical booster, the diameter becomes smaller, so that the wind force increases, and the high-speed wind enters the heat exchange pipe from the center of the fixing ring and blows on the fin. Under the reaction force of the fin, the wind direction changes and blows out from the gap between the fins. In this process, the wind wheel is pushed to rotate, and at the same time, the position of the fin changes, and the action force of the incoming wind always exists but changes in direction, so that the wind blows to the inner wall of the heat exchange pipe in a rotating manner, and there is no dead angle for blowing and sweeping the inner wall and the fin, etc., which greatly reduces the possibility of dust sticking to the wall and improves the heat exchange efficiency. After the wind contacts the inner wall, the wind direction gradually changes to the axial direction, at this time, the rotation of the second wind wheel changes again. The above changes are repeated until the wind is discharged from the outlet.

[0027] The scheme effectively changes the running mode of the wind by increasing the rotatable wind wheel and cooperating with the booster port. The wind rotates at high speed through the heat exchanger tube in the form of rotation. While effectively improving the heat exchange efficiency, the dust on the tube wall can also be effectively removed. The wind wheel has a "lantern" structure, and the side of the wind wheel blows out air and rotates in the tube. The blades with different angles and different gaps can adjust the wind speed to change the rotation speed of the wind. Cooperate with the conical booster port at the front end of the wind wheel. With sufficient rotation speed, the efficiency of the heat exchanger can be improved, and the dust in the tube can also be effectively removed.

Claims

1. A heat exchanger with a spoiler structure, comprising a plurality of heat exchange tubes, characterized in that: A center shaft is arranged in the heat exchange pipe, a booster port is arranged at the air inlet end of the heat exchange pipe, the booster port is a tapered cylinder with a large outer diameter and a small inner diameter, a plurality of wind wheels are arranged on the center shaft, and the wind wheels are rotationally connected with the center shaft; The wind wheel comprises two fixed rings arranged at two sides, and fins are uniformly and spacedly arranged between the two fixed rings; an axle ring is arranged at the middle of the fixed ring, the fixed ring and the axle ring are connected through a fixed arm, and the axle ring is sleeved on the center shaft.

2. The heat exchanger with spoiler structure according to claim 1, characterized in that: The cross section of the fin along the axial direction of the heat exchange pipe is arc-shaped; the cross section of the fin along the radial direction of the heat exchange pipe is involute-shaped, and the center is wide and the two sides are narrow.

3. The heat exchanger with spoiler structure according to claim 1, characterized in that: The center shaft is fixedly connected with the inner wall of the heat exchange pipe through a shaft supporting arm.

4. The heat exchanger with spoiler structure according to claim 1, characterized in that: The axle ring is axially positioned with the center shaft through a clasp spring.

5. The heat exchanger with spoiler structure according to claim 1, characterized in that: The number of the wind wheels in a single heat exchange pipe is 3-20.

6. The heat exchanger with spoiler structure according to claim 1, characterized in that: Turned edges are arranged at two ends of the fin, and the turned edges are welded with the fixed ring.

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