Air pipe with cooling function

Abstract

The utility model relates to an air pipe with a cooling function, which comprises a front end plate and a rear end plate, the front end plate and the rear end plate are fixedly connected with each other through a plurality of connecting rods, a shell is fixedly connected outside the connecting rods, an inner cylinder and an outer cylinder are connected between the front end plate and the rear end plate, the outer cylinder and the inner cylinder are coaxially arranged, a plurality of heat exchange pipes are arranged in a space between the outer cylinder and the inner cylinder, and the heat exchange pipes are fixedly connected with the shell. The two ends of each heat exchange pipe are fixedly connected with the front end plate and the rear end plate respectively, the heat exchange pipes are arranged around the inner cylinder, the side wall of the outer cylinder is connected with an air inlet pipe connector and an air outlet pipe connector, and the air inlet pipe connector and the air outlet pipe connector both penetrate out of the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to an air duct with a cooling function. Background Art

[0002] There are connecting angle irons at both ends of the air duct, and the air duct sections are connected by connecting angle irons to form a ventilation duct. The air duct is easy to produce, manufacture and install. It is the main structure for building exhaust gas and can be used for smoke exhaust and exhaust gas discharge.

[0003] The gases emitted by some factories or buildings are high-temperature exhaust gases. If the high-temperature gases are directly discharged through the air ducts, the entire air duct will be continuously heated and accelerate the aging of the air duct. If there are residents living near the exhaust point, the direct discharge of hot gas will affect the nearby residents. Utility Model Content

[0004] The utility model aims to provide an air duct with a cooling function, which can reduce the temperature of hot air flowing through the air duct, thereby protecting the air duct and preventing the air duct from aging, and at the same time can prevent the hot air from being directly discharged and affecting nearby residents.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A duct with cooling function comprises a front end plate and a rear end plate, the front end plate and the rear end plate are fixedly connected to each other through a plurality of connecting rods, a shell is fixedly connected to the outside of the connecting rods, an inner tube and an outer tube are connected between the front end plate and the rear end plate, the outer tube and the inner tube are coaxially arranged, a plurality of heat exchange tubes are arranged in the space between the outer tube and the inner tube, two ends of the plurality of heat exchange tubes are respectively fixedly connected to the front end plate and the rear end plate, the plurality of heat exchange tubes are arranged around the inner tube, an air inlet pipe joint and an air outlet pipe joint are connected to the side wall of the outer tube, the air inlet pipe joint and the air outlet pipe joint are both passed through the shell, and the outer ends of the air inlet pipe joint and the air outlet pipe joint are Both ends are provided with connecting flanges, an air guide oblique plate is connected between the outer tube and the inner tube, the upper edge of the air guide oblique plate is fixedly connected to the inner wall of the outer tube, the upper edge of the air guide oblique plate is fixedly connected to the outer wall of the inner tube, the upper edge of the air guide oblique plate is close to the opening edge of the air inlet pipe joint, the air guide oblique plate is parallel to the central axis of the inner tube, the angle between the air guide oblique plate and the central axis of the air inlet pipe joint is 25°-35°, the width of the air guide oblique plate along the axial direction is 1.8-2.3 of the ratio of the inner diameter of the air inlet pipe joint, and a plate end gap is left between the air guide oblique plate and the end plate on the side where the air inlet pipe joint is located.

[0007] Specifically, the space between the outer tube and the inner tube is provided with three rows of heat exchange tubes from the inside to the outside, and each row of heat exchange tubes is distributed in a circular shape.

[0008] Specifically, two adjacent rows of heat exchange tubes are staggered with each other in the circumferential direction.

[0009] Specifically, the ratio of the distance between the outer walls of adjacent heat exchange tubes to the inner diameter of the heat exchange tubes is 1.5-2.5.

[0010] Specifically, the front end plate and the rear end plate are connected by six connecting rods, four of which are distributed in a quadrilateral array, two of which are respectively located on the inner sides of the two connecting rods on the bottom side, and the two connecting rods located on the bottom edge are fixedly connected to the connecting rods close thereto through connecting plates.

[0011] Specifically, a gap is left between the outermost row of heat exchange tubes and the inner wall of the outer tube.

[0012] Specifically, a gap is left between the innermost row of heat exchange tubes and the outer wall of the inner tube.

[0013] Specifically, the cross section of the shell is rectangular, and connecting angle irons are fixedly connected to the side walls at both ends of the shell, and four connecting angle irons at the same end form a ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model is connected to a conventional air duct for discharging hot air, that is, the four connecting angle irons at the edge of the front plate are connected to the rear end of the front conventional air duct, and the four connecting angle irons at the edge of the rear plate are connected to the front end of the rear conventional air duct. The hot air entering the conventional air duct will enter from the through hole provided in the front plate, pass through the inner tube, and be discharged from the through hole provided in the rear plate to the rear conventional air duct.

[0016] The air inlet pipe joint and the air outlet pipe joint are connected to the pipes of the cooling system. When the hot air needs to be cooled, cold air is introduced into the air inlet pipe joint. The cold air enters the outer cylinder through the air inlet pipe joint, and is blocked by the wind guide inclined plate to change the flow direction, so that it flows around the inner cylinder, so that the cold air flows through multiple heat exchange tubes in sequence, fully exchanges heat with the heat exchange tubes, and takes away the heat absorbed by the heat exchange tubes, thereby reducing the temperature of the gas discharged from the through hole set in the rear end plate, and realizing hot air cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional view of the utility model;

[0019] Figure 2 It is a partial view of the utility model;

[0020] Figure 3 It is a partial view of the utility model;

[0021] Figure 4 It is a partial view of the utility model.

[0022] In the figure:

[0023] 11. front end plate; 12. rear end plate; 13. connecting rod; 14. shell; 15. inner tube; 16. outer tube; 17. air inlet pipe joint; 18. air outlet pipe joint; 19. connecting piece;

[0024] 2. Heat exchange tube; 3. Wind guide inclined plate; 4. Connecting angle iron. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See Figures 1 to 4 A duct with cooling function includes a front end plate 11 and a rear end plate 12, and the front end plate 11 and the rear end plate 12 are fixedly connected to each other through a plurality of connecting rods 13. A shell 14 is fixedly connected to the outside of the connecting rod 13. An inner tube 15 and an outer tube 16 are connected between the front end plate 11 and the rear end plate 12, and the outer tube 16 is coaxially arranged with the inner tube 15. A plurality of heat exchange tubes 2 are arranged in the space between the outer tube 16 and the inner tube 15, and the two ends of the plurality of heat exchange tubes 2 are respectively fixedly connected to the front end plate 11 and the rear end plate 12, and the plurality of heat exchange tubes 2 are arranged around the inner tube 15.

[0027] The side wall of the outer tube 16 is connected with an air inlet pipe joint 17 and an air outlet pipe joint 18, both of which are passed through the shell 14, and the outer ends of the air inlet pipe joint 17 and the air outlet pipe joint 18 are provided with connecting flanges. An air guide inclined plate 3 is connected between the outer tube 16 and the inner tube 15, and the upper edge of the air guide inclined plate 3 is fixedly connected to the inner wall of the outer tube 16, and the upper edge of the air guide inclined plate 3 is fixedly connected to the outer wall of the inner tube 15. The upper edge of the air guide inclined plate 3 is close to the opening edge of the air inlet pipe joint 17, and the air guide inclined plate 3 is parallel to the central axis of the inner tube 15, and the angle between the air guide inclined plate 3 and the central axis of the air inlet pipe joint 17 is 25°-35°. The axial width of the air guide inclined plate 3 is 1.8-2.3 of the ratio of the inner diameter of the air inlet pipe joint 17. A plate end gap ( Figure 3 (A in the middle).

[0028] Specifically, the space between the outer tube 16 and the inner tube 15 is provided with three rows of heat exchange tubes 2 from the inside to the outside, and each row of heat exchange tubes 2 is distributed in a circular shape.

[0029] Specifically, two adjacent rows of heat exchange tubes 2 are staggered with each other along the circumferential direction.

[0030] Specifically, the ratio of the distance between the outer walls of adjacent heat exchange tubes 2 to the inner diameter of the heat exchange tubes 2 is 1.5-2.5.

[0031] Specifically, the front end plate 11 and the rear end plate 12 are connected by six connecting rods 13, four of which are distributed in a quadrilateral array, two of which are respectively located on the inner sides of the two connecting rods 13 on the bottom side, and the two connecting rods 13 located on the bottom edge are fixedly connected to the connecting rods 13 close thereto through connecting plates 19.

[0032] Specifically, a gap is left between the outermost row of heat exchange tubes 2 and the inner wall of the outer tube 16 .

[0033] Specifically, a gap is left between the innermost row of heat exchange tubes 2 and the outer wall of the inner tube 15 .

[0034] Specifically, the cross section of the shell 14 is rectangular, and the side walls at both ends of the shell 14 are fixedly connected with connecting angle irons 4, and the four connecting angle irons 4 at the same end form a ring shape.

[0035] The working principle of the air duct with cooling function of the utility model is as follows:

[0036] The utility model is connected to a conventional air duct for discharging hot air, that is, the four connecting angle irons 4 at the edge of the front plate 11 are connected to the rear end of the front conventional air duct, and the four connecting angle irons 4 at the edge of the rear plate 12 are connected to the front end of the rear conventional air duct. The hot air entering the conventional air duct will enter from the through hole provided in the front plate 11, pass through the inner tube 15, and then be discharged from the through hole provided in the rear plate 12 to the rear conventional air duct.

[0037] The air inlet pipe joint 17 and the air outlet pipe joint 18 are connected to the pipeline of the cooling system. When the hot air needs to be cooled, cold air is introduced into the air inlet pipe joint 17. The cold air enters the outer tube 16 through the air inlet pipe joint 17, and is blocked by the wind guide inclined plate 3 to change the flow direction, thereby flowing around the inner tube 15, so that the cold air flows through the multiple heat exchange tubes 2 in sequence, fully exchanges heat with the heat exchange tubes 2, and takes away the heat absorbed by the heat exchange tubes 2, thereby reducing the temperature of the gas discharged from the through hole set in the rear end plate 12, and realizing the cooling of the hot air.

[0038] The angle between the wind guide inclined plate 3 and the central axis of the air inlet pipe joint 17 is 25°-35°, the axial width of the wind guide inclined plate 3 is 1.8-2.3 of the ratio of the inner diameter of the air inlet pipe joint 17, and a plate end gap ( Figure 3 The above arrangement enables the cold air entering the outer tube 16 through the air inlet pipe joint 17 to flow around the inner tube 15, thereby flowing through as many heat exchange tubes 2 as possible, thereby fully contacting and exchanging heat with the heat exchange tubes 2.

[0039] The ratio of the distance between the outer walls of adjacent heat exchange tubes 2 to the inner diameter of the heat exchange tubes 2 is 1.5-2.5, and the heat exchange tubes 2 in two adjacent rows are staggered along the circumferential direction. The above arrangement makes the wind resistance of the heat exchange tubes 2 to the cold air as small as possible, ensuring that the cold air flows smoothly in the outer tube 16.

[0040] The space between the outer tube 16 and the inner tube 15 is provided with three rows of heat exchange tubes 2 from the inside to the outside, a gap is left between the outermost row of heat exchange tubes 2 and the inner wall of the outer tube 16, and a gap is left between the innermost row of heat exchange tubes 2 and the outer wall of the inner tube 15. The above arrangement makes the heat exchange area of ​​the heat exchange tubes 2 as large as possible, thereby improving the heat exchange efficiency.

[0041] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An air duct with cooling function, characterized in that: The heat exchange tube comprises a front end plate and a rear end plate, the front end plate and the rear end plate are fixedly connected to each other through a plurality of connecting rods, a shell is fixedly connected to the outside of the connecting rods, an inner tube and an outer tube are connected between the front end plate and the rear end plate, the outer tube and the inner tube are coaxially arranged, a plurality of heat exchange tubes are arranged in the space between the outer tube and the inner tube, the two ends of the plurality of heat exchange tubes are respectively fixedly connected to the front end plate and the rear end plate, the plurality of heat exchange tubes are arranged around the inner tube, the side wall of the outer tube is connected to an air inlet pipe joint and an air outlet pipe joint, the air inlet pipe joint and the air outlet pipe joint are both passed through the shell, and the outer ends of the air inlet pipe joint and the air outlet pipe joint are both provided with connecting Flange, an air guide oblique plate is connected between the outer cylinder and the inner cylinder, the upper edge of the air guide oblique plate is fixedly connected to the inner wall of the outer cylinder, the upper edge of the air guide oblique plate is fixedly connected to the outer wall of the inner cylinder, the upper edge of the air guide oblique plate is close to the opening edge of the air inlet pipe joint, the air guide oblique plate is parallel to the central axis of the inner cylinder, the angle between the air guide oblique plate and the central axis of the air inlet pipe joint is 25°-35°, the axial width of the air guide oblique plate is 1.8-2.3 of the ratio of the inner diameter of the air inlet pipe joint, and a plate end gap is left between the air guide oblique plate and the end plate on the side where the air inlet pipe joint is located.

2. The air duct with cooling function according to claim 1, characterized in that: The space between the outer tube and the inner tube is provided with three rows of heat exchange tubes from the inside to the outside, and each row of heat exchange tubes is distributed in a circular shape.

3. The air duct with cooling function according to claim 2 is characterized in that: The heat exchange tubes in two adjacent rows are staggered with each other in the circumferential direction.

4. The air duct with cooling function according to claim 1, characterized in that: The ratio of the distance between the outer walls of adjacent heat exchange tubes to the inner diameter of the heat exchange tubes is 1.5-2.

5.

5. The air duct with cooling function according to claim 1, characterized in that: The front end plate and the rear end plate are connected by six connecting rods, four of which are distributed in a quadrilateral array, two of which are located on the inner sides of the two connecting rods on the bottom side, and the two connecting rods on the bottom edge are fixedly connected to the connecting rods close thereto through connecting plates.

6. The air duct with cooling function according to claim 2, characterized in that: There is a gap between the outermost row of heat exchange tubes and the inner wall of the outer tube.

7. The air duct with cooling function according to claim 2, characterized in that: There is a gap between the innermost row of heat exchange tubes and the outer wall of the inner tube.

8. The air duct with cooling function according to claim 1, characterized in that: The cross section of the shell is rectangular, and the side walls at both ends of the shell are fixedly connected with connecting angle irons, and the four connecting angle irons at the same end form a ring shape.

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