Cooling fin structure of heat exchanger

Abstract

The utility model provides a heat exchanger radiating fin structure which comprises two sets of cover plates and a plurality of sets of radiating fin bodies, a plurality of sets of connecting rods and a plurality of sets of heat exchange tubes are arranged between the cover plates, the plurality of sets of radiating fin bodies are all located between the two sets of cover plates, and a plurality of sets of mounting holes and connecting holes are formed in the radiating fin bodies. The cooling fin body is arranged on the connecting rod and the heat exchange tube in a sleeving manner through the mounting holes and the connecting holes; the cover plate and the multiple sets of cooling fin bodies are each provided with a smoke channel, flow dividing protrusions are arranged on the two sides of each cooling fin body, and flow dividing blocks are arranged on the flow dividing protrusions. According to the cooling fin structure, the flow dividing protrusions and the flow dividing blocks are arranged on the two sides of the cooling fin body, high-temperature flue gas can be divided, the high-temperature flue gas can make uniform contact with the cooling fin body, and the contact time is prolonged. Multiple groups of turbulent flow holes are formed in the cooling fin body, so that the heat flow heat exchange opportunity is increased, and the heat exchange efficiency is improved; and the high-temperature-resistant coating is arranged, thermal stress damage can be reduced, dust accumulation is prevented from affecting the heat dissipation effect, the service life is prolonged, and the use experience of the gas water heater is improved.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and more specifically, it relates to a heat exchanger fin structure. Background Technology

[0002] A heat exchanger is a key component in a gas water heater that converts cold water into hot water. Through the heat exchanger, the high-temperature heat generated by gas combustion is effectively transferred to the flowing cold water, thus heating it. The heat exchanger comes into contact with the high-temperature flue gas through a finned structure, which acts as a heat receiving and conversion device, enabling the heat exchanger to transfer heat to other media. However, traditional finned structures are relatively simple. When high-temperature flue gas passes through the fins, some of it passes for a short time, resulting in insufficient heat transfer to the fins and connected heat exchange pipes. This leads to inadequate heat transfer, reduced heat exchange efficiency, and energy loss. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a heat exchanger fin structure. This solves the problem in the prior art where traditional heat exchanger fin structures have short contact times with high-temperature flue gas, resulting in insufficient heat transfer, reduced heat exchange efficiency, and energy loss.

[0004] The purpose and effect of this utility model's heat exchanger fin structure are achieved by the following specific technical means:

[0005] A heat exchanger fin structure includes two sets of cover plates and multiple sets of fin bodies. Multiple sets of connecting rods and multiple sets of heat exchange tubes are arranged between the cover plates. The multiple sets of fin bodies are all located between the two sets of cover plates. Multiple sets of mounting holes and connecting holes are provided on the fin bodies. The fin bodies are sleeved on the connecting rods and heat exchange tubes through the mounting holes and connecting holes. The cover plates and the multiple sets of fin bodies are provided with flue gas channels. Multiple diversion protrusions are provided on the fin bodies, and diversion blocks are provided on the diversion protrusions.

[0006] According to a preferred embodiment, the heat sink body has turbulence holes arranged in a circular array along the axial direction of the connecting rod.

[0007] According to a preferred embodiment, the heat sink body is made of titanium alloy.

[0008] According to a preferred embodiment, a high-temperature resistant coating is applied to the heat sink body.

[0009] According to a preferred embodiment, multiple sets of heat exchange tubes are arranged around the circumference of the heat sink body, and one end of two adjacent sets of heat exchange tubes is connected by a bend, wherein one end of each set of heat exchange tubes is provided with a water inlet and a water outlet.

[0010] According to a preferred embodiment, both the inlet and outlet ends are threaded.

[0011] According to a preferred embodiment, the heat sink body is an irregular ring shape, the shunt protrusion is arc-shaped, and the shunt block is triangular.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The heat sink body has cover plates on both sides and flue gas channels. The heat sink body has multiple diversion protrusions and diversion blocks on the diversion protrusions. Through the diversion protrusions and diversion blocks, the high-temperature flue gas can be diverted, so that the flue gas can contact the heat sink body more evenly and prolong the contact time between some of the high-temperature flue gas and the heat sink body. At the same time, the heat sink body also has turbulence holes, which can disrupt the heat flow and increase the heat exchange opportunity between the heat flow and the heat sink body, thereby improving the heat exchange efficiency and reducing energy loss.

[0014] 2. The heat sink body is made of titanium alloy, which has high temperature resistance and good mechanical properties. A high-temperature resistant coating is applied to the surface of the heat sink body. When heat is transferred on the heat sink body, it can effectively disperse the heat, avoid excessive heat concentration in one place, reduce the probability of thermal stress damage caused by heat concentration, and effectively extend the service life of the heat sink body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembled structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the heat sink body structure;

[0018] Figure 4 This is a schematic diagram of the high-temperature flue gas flow on the heat sink body;

[0019] Figure 5 yes Figure 3 A magnified view of a portion of region a.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 11. Cover plate; 12. Heat sink body; 13. Mounting hole; 14. Connection hole; 15. Baffle hole; 21. Connecting rod; 22. Heat exchange tube; 23. Bend; 24. Water inlet; 25. Water outlet; 31. Flue gas passage; 32. Diverter protrusion; 33. Diverter block. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0023] Example:

[0024] like Figures 1 to 5 As shown, this utility model provides a heat exchanger fin structure, including two sets of cover plates 11 and multiple sets of fin bodies 12. Multiple sets of connecting rods 21 and multiple sets of heat exchange tubes 22 are arranged between the two sets of cover plates 11. The multiple sets of fin bodies 12 are installed between the two sets of cover plates 11. The fin bodies 12 have multiple sets of mounting holes 13 and connecting holes 14. Through the mounting holes 13 and connecting holes 14, the fin bodies 12 can be fitted onto the connecting rods 21 and the heat exchange tubes 22. The heat exchange tubes 22 pass through the mounting holes 13, and the connecting rods 21 pass through the connecting holes 14, allowing the components to be combined to form a stable overall structure. The cover plates 11 and the multiple sets of fin bodies 12 have flue gas channels 31. When high-temperature flue gas enters this system, the flue gas channels 31 provide a flow path. Diverting protrusions 32 are provided on both sides of the fin bodies 12, which divert the high-temperature flue gas. Furthermore, a diversion block 33 is provided on the diversion protrusion 32 to further optimize the diversion effect. Through this diversion protrusion 32 and diversion block 33, the high-temperature flue gas can be made to contact the heat sink body 12 more evenly. The even contact not only prolongs the contact time between some of the high-temperature flue gas and the heat sink body 12, but also effectively avoids local overheating or insufficient heat transfer.

[0025] like Figure 2 , Figure 3As shown, the heat sink body 12 has turbulence holes 15 arranged in a circular array, which can uniformly disturb the heat flow as it passes through the heat sink body 12. Furthermore, the turbulence holes 15 are arranged along the axial direction of the connecting rod 21, disrupting the flow state of the heat flow as it passes through the heat sink body 12 and increasing the heat exchange opportunity between the heat flow and the heat sink body 12. The heat sink body 12 is made of titanium alloy, which has high-temperature resistance and good mechanical properties. When the temperature rises sharply, ordinary materials may soften, deform, or even be damaged due to the intense heat. However, titanium alloy maintains its stability. It can reliably cope with continuous high-temperature impacts and stress changes caused by thermal expansion and contraction. The stability of the heat sink body 12 is crucial because in harsh heat exchange environments, there may be drastic temperature fluctuations and complex heat transfer processes. The titanium alloy ensures that the heat sink body 12 will not easily deform, enabling it to operate reliably and continuously and efficiently perform heat exchange. Meanwhile, a high-temperature resistant coating is also applied to the heat sink body 12, which can effectively reduce the occurrence of thermal stress damage caused by heat concentration, thereby extending the service life of the heat sink body 12. The high-temperature resistant coating can be a silicon nitride coating or a chromium aluminum yttrium coating.

[0026] Multiple sets of heat exchange tubes 22 are arranged circumferentially along the heat sink body 12. This circumferential arrangement ensures full contact between the heat exchange tubes 22 and the heat sink body 12, maximizing heat exchange. One end of each pair of adjacent sets of heat exchange tubes 22 is connected by a bend 23, ensuring smooth circulation of the heat exchange medium throughout the system. Two sets of heat exchange tubes 22 are equipped with an inlet 24 and an outlet 25 at one end; these two ports are crucial channels for the heat exchange medium to enter and exit. Both the inlet 24 and outlet 25 are threaded, facilitating connection to external piping and allowing the heat exchanger to integrate seamlessly into the overall heat exchange system.

[0027] like Figure 4 , Figure 5 As shown, the heat sink body 12 is an irregular ring shape, allowing it to adapt to different installation spaces and heat exchange environments. The diversion protrusion 32 is arc-shaped, which allows high-temperature flue gas to flow more smoothly through it, reducing airflow resistance. The diversion block 33 is triangular, which can more effectively divert high-temperature flue gas, making the flue gas more evenly distributed on the heat sink body 12, further improving heat exchange efficiency.

[0028] The specific usage and function of this embodiment are as follows:

[0029] In use, multiple sets of heat sink bodies 12 are fitted onto the connecting rod 21 and heat exchange tube 22 between two sets of cover plates 11 through mounting holes 13 and connecting holes 14, forming a stable overall structure. Next, high-temperature flue gas is introduced into the system, flowing through the flue gas channels 31 opened between the cover plates 11 and the multiple sets of heat sink bodies 12. During the flow of high-temperature flue gas, the arc-shaped diversion protrusions 32 on both sides of the heat sink body 12 and the triangular diversion blocks 33 on them divert the high-temperature flue gas, making the high-temperature flue gas contact the heat sink body 12 more evenly, extending the contact time between some of the high-temperature flue gas and the heat sink body 12, and avoiding local overheating or insufficient heat transfer. Simultaneously, the circular array of turbulence holes 15 on the heat sink body 12, arranged axially along the connecting rod 21, interferes with the heat flow, disrupting the flow pattern and increasing the heat exchange opportunities between the heat flow and the heat sink body 12.

[0030] During the heat exchange process, multiple sets of heat exchange tubes 22 arranged around the circumference of the heat sink body 12 come into full contact with the heat sink body 12 to exchange heat. The heat exchange medium enters from the inlet end 24 with a threaded port, circulates through the channel formed by the bends 23 connecting one end of adjacent heat exchange tubes 22, and finally flows out from the outlet end 25 with a threaded port. In this process, the titanium alloy heat sink body 12 remains stable in high-temperature environments due to its high temperature resistance and excellent mechanical properties, and is not easily deformed or damaged. Moreover, the high-temperature resistant coating on the heat sink body 12 can reduce thermal stress damage caused by heat concentration, prevent dust accumulation from adversely affecting the heat dissipation effect, and enable the heat sink body 12 to operate efficiently for a long time.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A heat exchanger fin structure, comprising two sets of cover plates (11) and multiple sets of fin bodies (12), characterized in that: Multiple sets of connecting rods (21) and multiple sets of heat exchange tubes (22) are arranged between the cover plates (11). Multiple sets of heat sink bodies (12) are located between two sets of cover plates (11). Multiple sets of mounting holes (13) and connecting holes (14) are opened on the heat sink bodies (12). The heat sink bodies (12) are sleeved on the connecting rods (21) and the heat exchange tubes (22) through the mounting holes (13) and the connecting holes (14). Both the cover plates (11) and the multiple sets of heat sink bodies (12) are provided with flue gas channels (31). Multiple sets of diversion protrusions (32) are provided on the heat sink bodies (12), and diversion blocks (33) are provided on the diversion protrusions (32).

2. The heat exchanger fin structure according to claim 1, characterized in that: The heat sink body (12) has turbulence holes (15) arranged in a circular array and along the axial direction of the connecting rod (21).

3. The heat exchanger fin structure according to claim 2, characterized in that: The heat sink body (12) is made of titanium alloy.

4. The heat exchanger fin structure according to claim 3, characterized in that: The heat sink body (12) is coated with a high-temperature resistant coating.

5. The heat exchanger fin structure according to claim 1, characterized in that: Multiple sets of heat exchange tubes (22) are arranged around the circumference of the heat sink body (12). One end of two adjacent sets of heat exchange tubes (22) is connected by a bend (23). One end of each set of heat exchange tubes (22) is provided with a water inlet (24) and a water outlet (25).

6. The heat exchanger fin structure according to claim 5, characterized in that: Both the inlet end (24) and the outlet end (25) are threaded.

7. The heat exchanger fin structure according to claim 1, characterized in that: The heat sink body (12) is an irregular ring shape, the shunt protrusion (32) is arc-shaped, and the shunt block (33) is triangular.

Images