Efficient heat exchange tube

Abstract

The utility model relates to the technical field of heat exchange tubes, and discloses an efficient heat exchange tube which comprises an outer tube, an inner cylinder matched with the outer tube is arranged in the middle of the interior of the outer tube, four arc-shaped strips are fixedly connected to the outer wall of the inner cylinder at equal intervals, and the four arc-shaped strips are distributed in a spiral line mode along the outer wall of the inner cylinder. And a plurality of sets of connecting assemblies are arranged between the inner wall of the outer pipe and the outer wall of the inner cylinder, and the connecting assemblies are used for connecting the inner cylinder and the outer pipe. The inner cylinder is arranged in the outer pipe, an annular channel is formed in the outer pipe, compared with a circular channel, the contact area of refrigerants with the same volume and the inner wall of the outer pipe is increased, the utilization rate of the refrigerants is increased, the spiral line-shaped channel is formed by the four arc-shaped strips, the refrigerants rotate in the flowing process, and therefore the refrigerant flow rate is increased. Therefore, refrigerants at all parts can be in contact with the inner wall of the outer pipe, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange tubes, and specifically relates to an efficient heat exchange tube. Background Technique

[0002] The heat exchange tube is one of the components of the heat exchanger, which is placed inside the cylinder body and used for heat exchange between two media; the commonly used sizes (outer diameter x wall thickness) of the heat exchange tubes are mainly seamless steel tubes of 19mm x 2mm, 25mm x 2.5mm and 38mm x 2.5mm, as well as stainless steel tubes of 5mm x 2mm and 38mm x 2.5mm. The standard tube lengths are 1.5, 2.0, 3.0, 4.5, 6.0, 9.0m, etc. The use of small-diameter heat exchange tubes can increase the heat transfer area per unit volume, make the structure compact, reduce the metal consumption, and improve the heat transfer coefficient.

[0003] In the patent document with the published publication number CN217083451U, a high-compressive spliced heat exchange tube is disclosed. In this published patent document, the support of several groups of compression plates prevents the inner heat exchange tube and the outer heat exchange tube from being deformed by external force impact, improving the service life of the pipeline body. The connection between the clamping ring and the groove can better realize the connection between multiple heat exchange tubes, effectively improving the tightness between the inner heat exchange tubes; however, in the above-mentioned published patent document, the refrigerant flowing in the pipeline only flows along the pipeline, and the refrigerant does not rotate during the flow process, so that the refrigerant at the center of the same cross-section cannot contact the pipeline, resulting in a reduction in heat exchange efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an efficient heat exchange tube to solve the problems raised in the background technique.

[0005] The embodiment of the present application provides an efficient heat exchange tube, including an outer tube. An inner cylinder is arranged in the middle of the inner part of the outer tube. Four arc-shaped strips are fixedly connected to the outer wall of the inner cylinder at equal intervals. The four arc-shaped strips are all distributed in a spiral shape along the outer wall of the inner cylinder, and the four arc-shaped strips form a spiral-shaped channel. A plurality of groups of connection components are arranged between the inner wall of the outer tube and the outer wall of the inner cylinder, and the connection components are used for connecting the inner cylinder and the outer tube.

[0006] By adopting the above technical solution, the inner cylinder is arranged inside the outer tube to form an annular channel inside the outer tube, which increases the contact area between the refrigerant and the inner wall of the outer tube under the same volume compared with the circular channel. And the four arc-shaped strips form a spiral-shaped channel to make the refrigerant rotate during the flow process, so that the refrigerant in each part can contact the inner wall of the outer tube, increasing the heat exchange efficiency.

[0007] Optionally, a number of heat transfer rings are fixedly connected to the outer wall of the outer tube at equal intervals, and a number of heat transfer shafts penetrate between the heat transfer rings, and the heat transfer shafts are connected to the heat transfer rings by interference fit.

[0008] By adopting the above technical solution, the heat transfer rings can exchange heat between the refrigerant and the outside air, and the heat transfer shafts can enable heat exchange between the heat transfer rings, preventing the problem that some heat transfer rings cannot be used when the heat exchange air is uneven.

[0009] Optionally, each set of the connecting components includes an outer arc member and an inner arc member. A connecting member is arranged between the inner wall of the outer arc member and the outer wall of the inner arc member. The outer arc member, the inner arc member and the connecting member are integrally formed by casting. The outer wall of the outer arc member is welded to the inner wall of the outer tube, and the outer arc member is adapted to the outer tube. The inner wall of the inner arc member is welded to the outer wall of the inner cylinder, and the inner arc member is adapted to the inner cylinder.

[0010] By adopting the above technical solution, the connecting components can connect the inner cylinder and the outer tube.

[0011] Optionally, every four of the connecting components are distributed in a circular array with the axial direction of the inner cylinder as the center, and the transverse connecting components are arranged at equal intervals.

[0012] By adopting the above technical solution, a plurality of connecting components distributed in a circular array and arranged at equal intervals ensure the stability of each connection between the inner cylinder and the outer tube.

[0013] Optionally, the outer wall of the inner cylinder is coated with heat insulation paint.

[0014] By adopting the above technical solution, heat exchange between the inner cylinder and the refrigerant is prevented, reducing waste.

[0015] Optionally, the wall thickness of the outer tube is 2 mm.

[0016] By adopting the above technical solution, the heat transfer effect between the outer tube and the heat transfer rings is ensured.

[0017] Optionally, both the heat transfer rings and the heat transfer shafts are made of copper.

[0018] By adopting the above technical solution, the heat exchange effect between the heat transfer shafts and the heat transfer rings is ensured.

[0019] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0020] 1. By setting an inner cylinder inside the outer tube, an annular channel is formed inside the outer tube, which increases the contact area between the refrigerant and the inner wall of the outer tube under the same volume compared to a circular channel, improves the utilization rate of the refrigerant, and forms a spiral channel composed of four arc-shaped strips, causing the refrigerant to rotate during the flow process, so that the refrigerant in each part can contact the inner wall of the outer tube, increasing the heat exchange efficiency.

[0021] 2. The heat transfer ring can be used to exchange heat between the refrigerant and the outside air, and the heat transfer shaft can enable heat exchange between each heat transfer ring, preventing the problem that some heat transfer rings cannot be used when the heat exchange air is uneven. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects, and advantages of the present utility model will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 It is a schematic structural diagram of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of the inner cylinder of the present utility model;

[0025] Figure 3 It is a sectional view of the side view of the inner cylinder of the present utility model;

[0026] Figure 4 It is a schematic structural diagram of the outer tube of the present utility model.

[0027] In the figure: 1. Outer tube; 2. Inner cylinder; 3. Heat transfer ring; 4. Arc-shaped strip; 5. Connection assembly; 51. Outer arc member; 52. Inner arc member; 53. Connector; 6. Heat transfer shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] Please refer to Figures 1-3 , the present utility model provides a technical solution: including an outer tube 1, an inner cylinder 2 that matches is arranged in the middle of the inside of the outer tube 1, four arc-shaped strips 4 are fixedly connected to the outer wall of the inner cylinder 2 at equal intervals, the four arc-shaped strips 4 are all distributed in a spiral shape along the outer wall of the inner cylinder 2, and the four arc-shaped strips 4 form a spiral channel, and a plurality of groups of connection assemblies 5 are arranged between the inner wall of the outer tube 1 and the outer wall of the inner cylinder 2, and the connection assembly 5 is used for connecting the inner cylinder 2 and the outer tube 1;

[0030] In this technical solution, by arranging the inner cylinder 2 inside the outer tube 1, an annular channel is formed inside the outer tube 1, which increases the contact area between the refrigerant and the inner wall of the outer tube 1 under the same volume compared with a circular channel, improves the utilization rate of the refrigerant, and forms a spiral linear channel through four arc-shaped strips 4, causing the refrigerant to rotate during the flow process, so that the refrigerant in each part can contact the inner wall of the outer tube 1, increasing the heat exchange efficiency.

[0031] In some technical solutions, such as Figure 1 and Figure 4 shown, a plurality of heat transfer rings 3 are fixedly connected to the outer wall of the outer tube 1 at equal intervals, and a number of heat transfer shafts 6 penetrate between the plurality of heat transfer rings 3, and the heat transfer shafts 6 are connected to the heat transfer rings 3 by interference fit.

[0032] During use, the refrigerant can be heat-exchanged with the outside air through the heat transfer rings 3, and heat exchange can be carried out between the respective heat transfer rings 3 through the heat transfer shafts 6, preventing the problem that some heat transfer rings 3 cannot be used due to uneven heat exchange air.

[0033] In some technical solutions, such as Figures 1-3 shown, each set of connection components 5 includes an outer arc member 51 and an inner arc member 52. A connecting member 53 is arranged between the inner wall of the outer arc member 51 and the outer wall of the inner arc member 52. The outer arc member 51, the inner arc member 52 and the connecting member 53 are integrally formed by casting. The outer wall of the outer arc member 51 is welded to the inner wall of the outer tube 1, and the outer arc member 51 is adapted to the outer tube 1. The inner wall of the inner arc member 52 is welded to the outer wall of the inner cylinder 2, and the inner arc member 52 is adapted to the inner cylinder 2.

[0034] During use, the connection component 5 composed of the outer arc member 51, the inner arc member 52 and the connecting member 53 can connect the inner cylinder 2 and the outer tube 1.

[0035] In some technical solutions, such as Figure 2 shown, every four connection components 5 are annularly arranged around the axial direction of the inner cylinder 2 as the center, and the transverse connection components 5 are arranged at equal intervals.

[0036] During use, through the multiple connection components 5 arranged in an annular array and at equal intervals, the stability of each connection part between the inner cylinder 2 and the outer tube 1 is ensured.

[0037] In some technical solutions, such as Figure 3 shown, a heat insulation coating is applied to the outer wall of the inner cylinder 2.

[0038] During use, through the heat insulation coating on the outer wall of the inner cylinder 2, heat exchange between the inner cylinder 2 and the refrigerant is prevented, reducing waste.

[0039] In some technical solutions, such asFigure 1 and Figure 4 As shown in Figure 4 , the wall thickness of the outer tube 1 is 2 mm.

[0040] During use, the heat transfer effect between the outer tube 1 and the heat transfer ring 3 is ensured.

[0041] In some technical solutions, such as Figure 1 and Figure 4 As shown in Figure 4 , both the heat transfer ring 3 and the heat transfer shaft 6 are components made of copper.

[0042] During use, the heat exchange effect between the heat transfer shaft 6 and each heat transfer ring 3 is ensured.

[0043] Working principle: During use, since the inner cylinder 2 provided inside the outer tube 1 forms an annular channel inside the outer tube 1, compared with a circular channel, the contact area between the refrigerant and the inner wall of the outer tube 1 is increased under the same volume, the utilization rate of the refrigerant is increased, and a spiral-shaped channel is formed by four arc-shaped strips 4, so that the refrigerant rotates during the flow process, so that the refrigerant in each part can contact the inner wall of the outer tube 1, increasing the heat exchange efficiency. When the heat exchange air passes through the gaps between the heat transfer rings 3, the refrigerant can be heat-exchanged with the outside air through the heat transfer ring 3, and the heat transfer shaft 6 can enable heat exchange between the heat transfer rings 3, preventing the problem that some heat transfer rings 3 cannot be used when the heat exchange air is uneven.

[0044] The above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-efficiency heat exchange tube, comprising an outer tube (1), characterized in that: A matching inner cylinder (2) is arranged in the middle of the inner part of the outer tube (1); four arc strips (4) are fixedly connected to the outer wall of the inner cylinder (2) at equal intervals; the four arc strips (4) are distributed in a spiral line along the outer wall of the inner cylinder (2); and the four arc strips (4) form a spiral line path; a plurality of groups of connection components (5) are arranged between the inner wall of the outer tube (1) and the outer wall of the inner cylinder (2); the connection components (5) are used for connecting the inner cylinder (2) and the outer tube (1).

2. A high-efficiency heat exchange tube according to claim 1, characterized in that: The outer wall of the outer tube (1) is fixedly connected with a plurality of heat transfer rings (3) at equal intervals, a plurality of heat transfer shafts (6) are passed through the plurality of heat transfer rings (3), and the heat transfer shafts (6) are connected to the heat transfer rings (3) by interference fit.

3. The high-efficiency heat exchange tube according to claim 1, characterized in that: Each group of the connecting components (5) comprises an outer arc component (51) and an inner arc component (52); a connecting component (53) is provided between the inner wall of the outer arc component (51) and the outer wall of the inner arc component (52); the outer arc component (51), the inner arc component (52) and the connecting component (53) are integrally formed by casting; the outer wall of the outer arc component (51) is welded to the inner wall of the outer tube (1), and the outer arc component (51) and the outer tube (1) are matched; the inner wall of the inner arc component (52) is welded to the outer wall of the inner cylinder (2), and the inner arc component (52) and the inner cylinder (2) are matched.

4. The high-efficiency heat exchange tube according to claim 3, characterized in that: Every four of the connection components (5) are distributed in a circular array with the axial direction of the inner cylinder (2) as the center, and the connection components (5) are arranged equidistantly in the transverse direction.

5. The high-efficiency heat exchange tube according to claim 1, characterized in that: The outer wall of the inner cylinder (2) is coated with heat-insulating paint.

6. The high-efficiency heat exchange tube according to claim 1, characterized in that: The wall thickness of the outer tube (1) is 2 mm.

7. The high-efficiency heat exchange tube according to claim 2, characterized in that: The heat transfer ring (3) and the heat transfer shaft (6) are both components made of copper.

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