Heat exchanger structure
By using a carbon steel inner tube and a composite outer tube structure, along with external fins and a combined vortex design, the problems of heat dissipation and durability in existing heat exchangers have been solved, achieving efficient thermal management and improved heat exchange performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-03-06
AI Technical Summary
Existing heat exchangers are inadequate in terms of heat dissipation and durability, especially in terms of thermal conductivity and fluid flow optimization, which need to be improved.
It adopts a carbon steel inner tube and a composite outer tube structure. The outer tube is equipped with fins and a combined vortex pit. The surface of the vortex pit is rounded. Through multi-layer material composite design and the use of medium material, a vortex field is formed to enhance heat transfer performance.
It improves the heat transfer performance and mechanical strength of the heat exchanger, enhances heat exchange efficiency, prevents worker injuries, and saves energy.
Smart Images
Figure CN223976507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger structure. Background Technology
[0002] The choice of materials for the inner and outer tubes of a heat exchanger depends on factors such as the heat exchanger's operating environment, fluid type, temperature, pressure, and corrosion resistance. The materials of the inner and outer tubes have a significant impact on heat exchange efficiency, durability, and cost. For heat exchangers, improving heat dissipation is key to increasing thermal conductivity, expanding contact area, and optimizing fluid flow. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a heat exchanger structure.
[0004] This utility model is achieved by the following technical solution: a heat exchanger structure, including a shell, a flue gas inlet on one side of the shell and a flue gas outlet on the other side, a plurality of heat exchange tubes inside the shell, a water inlet and a water outlet on the shell, the heat exchange tubes including an inner tube, an outer tube fixedly connected to the outside of the inner tube, the inner tubes of the plurality of heat exchange tubes being interconnected to form a connecting channel, one end of the connecting channel being connected to the water inlet and the other end being connected to the water outlet, and a medium cavity being opened between the outer tube and the inner tube.
[0005] Furthermore, several fins are uniformly provided on the outside of the outer tube.
[0006] Furthermore, a combined vortex pit is provided on the outside of the outer tube.
[0007] Furthermore, the outer tube is a composite outer tube, which includes a metal inner tube, a non-metallic intermediate connecting layer, and a metal outer tube.
[0008] Furthermore, the surface of the combined vortex pit is provided with a rounded corner one, and the inner wall of the combined vortex pit is provided with a rounded corner two.
[0009] Furthermore, three combined vortex pits are provided, and the three combined vortex pits are evenly distributed with the center of the outer tube as the center.
[0010] Furthermore, several fillets are provided, and these fillets are evenly distributed on the outer surface of the combined vortex pit.
[0011] Furthermore, several rounded corners are provided, and these rounded corners are evenly distributed on the inner surface of the combined vortex pit.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] The heat exchange tube in this invention can have several structural forms. One is a carbon steel inner tube, outer tube, and fins; the fins provide good heat dissipation. Another is a carbon steel inner tube and a composite outer tube (metal inner tube, non-metallic intermediate connecting layer, and metal outer tube). The composite outer tube design provides highly efficient thermal management during use. The multi-layered composite design improves thermal conductivity and mechanical strength. A medium material is placed inside the medium cavity between the composite heat pipe outer tube and the carbon steel inner tube, allowing heat exchange between the medium material and the liquid flowing inside the carbon steel inner tube. The carbon steel inner tube has high strength, good machinability, high temperature resistance, thermal conductivity, and pressure resistance. The outer metal of the composite outer tube is selected from suitable corrosion-resistant metal materials depending on the operating conditions. A third... It consists of a carbon steel inner tube, an outer tube, and a combination of vortex pits on the outside of the outer tube. By setting up the combination of vortex pits, heat and gas form a unique vortex field when passing through them. A large number of vortex pits can create a large amount of intense vortex disturbance at the contact surface between the medium and the heat exchange tube, which greatly enhances the heat exchange performance of the heat exchange tube surface and saves energy loss. The rounded corners of the combination of vortex pits provide a smooth feel during handling and use, preventing injury to personnel due to the rough surface of the combination of vortex pits. At the same time, it can facilitate the collection of airflow passing over the surface of the composite heat pipe and facilitate the formation of a vortex field. The rounded corners on the inner surface of the combination of vortex pits can increase the contact area and contact strength between the composite heat pipe outer tube and the composite material inside the medium cavity, thereby improving the heat exchange efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model;
[0015] Figure 2 This is a top-view exploded view of the present invention;
[0016] Figure 3 This is a side view of the heat exchange tube connection in this utility model;
[0017] Figure 4 This is a schematic diagram of the water inlet of this utility model.
[0018] Figure 5 This is a schematic diagram of the wastewater outlet of this utility model;
[0019] Figure 6 This is a schematic diagram of the composite outer tube in this utility model;
[0020] Figure 7 This is a schematic diagram of the combined vortex pit configuration in this utility model;
[0021] Figure 8 This is a schematic diagram showing the arrangement of fillet one and fillet two in this utility model. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example 1
[0023] Please combine Figure 1-5 A heat exchanger structure includes a housing 1, a flue gas inlet 2 on one side of the housing 1 and a flue gas outlet 3 on the other side, a plurality of heat exchange tubes inside the housing 1, a water inlet 4 and a water outlet 5 on the housing 1, each heat exchange tube including an inner tube 6, an outer tube 7 fixedly connected to the outside of the inner tube 6, the inner tubes 6 of the plurality of heat exchange tubes being interconnected to form a connecting channel, one end of the connecting channel being connected to the water inlet 4 and the other end being connected to the water outlet 5, and a medium cavity being formed between the outer tube 7 and the inner tube 6.
[0024] Several fins are evenly distributed on the outside of the outer tube 7. Example 2
[0025] Please combine Figure 1 , Figure 4 , Figure 5 , Figure 6 A heat exchanger structure includes a housing 1, a flue gas inlet 2 on one side of the housing 1 and a flue gas outlet 3 on the other side, a plurality of heat exchange tubes inside the housing 1, a water inlet 4 and a water outlet 5 on the housing 1, each heat exchange tube including an inner tube 6, an outer tube 7 fixedly connected to the outside of the inner tube 6, the inner tubes 6 of the plurality of heat exchange tubes being interconnected to form a connecting channel, one end of the connecting channel being connected to the water inlet 4 and the other end being connected to the water outlet 5, and a medium cavity being formed between the outer tube 7 and the inner tube 6.
[0026] The outer tube 7 is a composite outer tube, which includes a metal inner tube 7.1, a non-metallic intermediate connecting layer 7.2, and a metal outer tube 7.3. Example 3
[0027] Please combine Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8 A heat exchanger structure is characterized by comprising a housing 1, a flue gas inlet 2 on one side of the housing 1 and a flue gas outlet 3 on the other side, a plurality of heat exchange tubes inside the housing 1, a water inlet 4 and a water outlet 5 on the housing 1, each heat exchange tube comprising an inner tube 6, an outer tube 7 fixedly connected to the outside of the inner tube 6, the inner tubes 6 of the plurality of heat exchange tubes being interconnected to form a connecting channel, one end of the connecting channel being connected to the water inlet 4 and the other end being connected to the water outlet 5, and a medium cavity being formed between the outer tube 7 and the inner tube 6.
[0028] Three combined vortex pits are provided on the outside of the outer tube 7, and the three combined vortex pits are evenly distributed with the center of the outer tube 7 as the center.
[0029] The surface of the combined vortex pit is provided with a fillet 8, and the inner wall of the combined vortex pit is provided with a fillet 9.
[0030] Several fillet 8s are provided, and several fillet 8s are evenly distributed on the outer surface of the combined vortex pit.
[0031] Several fillet 2 9 are provided, and several fillet 2 9 are evenly arranged on the inner surface of the combined vortex pit.
[0032] The heat exchange tube in this invention can have several structural forms. One is a carbon steel inner tube, outer tube, and fins; the fins provide good heat dissipation. Another is a carbon steel inner tube and a composite outer tube (metal inner tube, non-metallic intermediate connecting layer, and metal outer tube). The composite outer tube design provides highly efficient thermal management during use. The multi-layered composite design improves thermal conductivity and mechanical strength. A medium material is placed inside the medium cavity between the composite heat pipe outer tube and the carbon steel inner tube, allowing heat exchange between the medium material and the liquid flowing inside the carbon steel inner tube. The carbon steel inner tube has high strength, good machinability, high temperature resistance, thermal conductivity, and pressure resistance. The outer metal of the composite outer tube is selected from suitable corrosion-resistant metal materials depending on the operating conditions. A third... It consists of a carbon steel inner tube, an outer tube, and a combination of vortex pits on the outside of the outer tube. By setting up the combination of vortex pits, heat and gas form a unique vortex field when passing through them. A large number of vortex pits can create a large amount of intense vortex disturbance at the contact surface between the medium and the heat exchange tube, which greatly enhances the heat exchange performance of the heat exchange tube surface and saves energy loss. The rounded corners of the combination of vortex pits provide a smooth feel during handling and use, preventing injury to personnel due to the rough surface of the combination of vortex pits. At the same time, it can facilitate the collection of airflow passing over the surface of the composite heat pipe and facilitate the formation of a vortex field. The rounded corners on the inner surface of the combination of vortex pits can increase the contact area and contact strength between the composite heat pipe outer tube and the composite material inside the medium cavity, thereby improving the heat exchange efficiency.
[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A heat exchanger structure, characterized by, The utility model relates to a heat exchange device, including shell (1), be equipped with flue gas import (2) on one side of shell (1), be equipped with flue gas export (3) on the other side, be equipped with a plurality of heat exchange pipes in shell (1), be equipped with water import (4) and water export (5) on shell (1), the heat exchange pipe includes inner tube (6), the outer fixedly connected with outer tube (7) of inner tube (6) outside, the inner tube (6) of a plurality of heat exchange pipes intercommunication and constitute the communication channel, this communication channel one end is linked with water import (4), the other end is linked with water export (5), medium cavity is set up between outer tube (7) and inner tube (6).
2. A heat exchanger structure as claimed in claim 1, characterised in that: Uniformly be equipped with a plurality of fins outside outer tube (7).
3. A heat exchanger structure as claimed in claim 1, wherein: The outer tube (7) is provided with a combined vortex pit outside.
4. A heat exchanger structure as claimed in claim 1, wherein: The outer tube (7) adopts composite outer tube, which comprises a metal inner tube (7.1), a non-metal intermediate connecting layer (7.2) and a metal outer tube (7.3).
5. A heat exchanger structure as claimed in claim 3, wherein: The combined vortex pit is provided with a round corner one (8) on the surface, and a round corner two (9) is arranged on the inner wall of the combined vortex pit.
6. A heat exchanger structure as claimed in claim 5, characterised in that: The combined vortex pit is provided with three, and the centers of the outer tubes (7) of the three combined vortex pits are uniformly arranged.
7. A heat exchanger structure as claimed in claim 5, wherein: The round corner one (8) is provided with a plurality of round corners, and the plurality of round corners are uniformly arranged on the outer surface of the combined vortex pit.
8. A heat exchanger structure as claimed in claim 5, wherein: The round corner two (9) is provided with a plurality of round corners, and the plurality of round corners are uniformly arranged on the inner surface of the combined vortex pit.