Heat exchanger fin structure and gas water heater

Abstract

The utility model relates to a heat exchanger fin structure and a gas water heater. Relates to the technical field of water heaters. The heat exchange fin specifically comprises a fin body, a plurality of heat exchange holes formed in the fin body and at least two flow guide turned-over edges arranged on the fin body, the heat exchange holes are located between the flow guide turned-over edges, and the flow guide turned-over edges are arranged in the direction facing the heat exchange holes. The heat exchange holes are used for allowing the heat exchange pipes to penetrate through and limiting the heat exchange pipes, and the at least two flow guide flanges are used for conducting flow guide on the high-temperature flue gas so that the high-temperature flue gas can be collected in the direction of the multiple heat exchange holes. Under the guidance of the at least two flow guide turnups, high-temperature flue gas flows towards the direction close to the heat exchange holes, namely the high-temperature flue gas flows towards the heat exchange pipes, so that the high-temperature flue gas exchanges heat with cold water in the heat exchange pipes better, the heat loss of the high-temperature flue gas is reduced, the heat exchange capacity of the fin structure is improved, and the heat exchange efficiency of the fin structure is improved. The heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a heat exchanger fin structure and a gas water heater. Background Art

[0002] Water heaters are an indispensable device for home life. In terms of the energy used, they can be roughly divided into gas water heaters, electric water heaters and solar water heaters, among which gas water heaters are widely used by the general public. Existing gas water heaters are equipped with a fan, a burner and a heat exchanger inside the body. The heat exchanger is connected to a cold water pipeline and a hot water pipeline. The cold water pipeline and the hot water pipeline can form a water passage. One end of the cold water pipeline has a cold water inlet, which can be connected to an appropriate water source for inputting cold water to be heated. One end of the hot water pipeline has a hot water outlet, and cold water to be heated can be input from the cold water inlet and the cold water pipeline, so that the cold water is transported to the heat exchanger, and the cold water enters the heat exchanger for heat exchange, and then the hot water is output from the hot water pipeline and the hot water outlet for use.

[0003] The heat exchanger of a gas water heater is a heat exchange device for high-temperature flue gas and water. The device is usually equipped with certain fins for heat absorption and heat exchange, and the shape of the fins affects the efficiency of heat exchange. The fins of existing heat exchangers are usually flat and straight-surface structures, so the high-temperature flue gas below is easy to rise straight up and flow outward, resulting in poor heat absorption effect of the fins, thereby reducing the heat exchange efficiency of the heat exchanger, and then reducing the heating efficiency of the gas water heater. Utility Model Content

[0004] The purpose of the utility model is to provide a heat exchanger fin structure and a gas water heater to address the deficiencies of the above-mentioned prior art, which can improve the heat exchange capacity of the fin structure and thus improve the heat exchange efficiency of the heat exchanger.

[0005] The utility model proposes a heat exchanger fin structure, comprising a fin body, a plurality of heat exchange holes arranged on the fin body, and at least two guide flanges arranged on the fin body, the plurality of heat exchange holes are located between the at least two guide flanges, and the at least two guide flanges are arranged in the direction of the plurality of heat exchange holes; the heat exchange holes are used for heat exchange tubes to pass through and to limit the heat exchange tubes, and the at least two guide flanges guide high-temperature flue gas to make the high-temperature flue gas converge in the direction of the plurality of heat exchange holes.

[0006] Furthermore, the heat exchange hole has a heat exchange tube flange extending outwardly, and when the heat exchange tube passes through the heat exchange hole, the heat exchange tube flange is sleeved on the outside of the heat exchange tube to fix the heat exchange tube.

[0007] Furthermore, a flue gas turbulence angle is provided on the outer periphery of the flange of the heat exchange tube, and the flue gas turbulence angle is used to turbulent the high-temperature flue gas.

[0008] Furthermore, the flue gas turbulence angles are multiple and are distributed at equal distances along the outer circumference of the flange of the heat exchange tube.

[0009] Furthermore, a guide boss is provided on the fin body, and the guide boss is provided between the plurality of heat exchange holes to allow the high-temperature flue gas to flow close to the heat exchange tube.

[0010] Furthermore, the flow guide boss includes a first flow boss disposed between two adjacent heat exchange holes, and a first flow channel for high-temperature flue gas to flow is disposed in the first flow boss.

[0011] Furthermore, the flow-guiding boss also includes flow-blocking bosses arranged on both sides, and the flow-blocking bosses guide the flow of the high-temperature flue gas. Along the flow direction of the high-temperature flue gas, the flow-blocking bosses are located downstream of the first flow-through boss.

[0012] Furthermore, the guide boss also includes a second flow boss arranged in the middle, and the second flow boss is provided with a second flow channel for high-temperature flue gas to flow. Along the flow direction of the high-temperature flue gas, the second flow boss is located downstream of the first flow boss.

[0013] Furthermore, along the flow direction of the high-temperature flue gas, the multiple heat exchange holes include multiple front-row heat exchange holes and multiple rear-row heat exchange holes, the first flow boss is arranged between the multiple front-row heat exchange holes and the multiple rear-row heat exchange holes, and the second flow boss is arranged in the middle area of ​​the multiple rear-row heat exchange holes.

[0014] Furthermore, a cross-sectional range of the second flow passage is larger than a cross-sectional range of the first flow passage.

[0015] The utility model also provides a gas water heater, comprising the above-mentioned heat exchanger fin structure.

[0016] The utility model provides a heat exchanger fin structure and a gas water heater having the following gain effects:

[0017] (1) At least two guide flanges are arranged on the fin body of the fin structure, and at least two guide flanges are arranged in the direction of the heat exchange holes. Under the guidance of the at least two guide flanges, the high-temperature flue gas flows in the direction close to the multiple heat exchange holes, that is, the high-temperature flue gas flows in the direction of the multiple heat exchange tubes, so that the high-temperature flue gas can better exchange heat with the cold water in the heat exchange tubes, reduce the heat loss of the high-temperature flue gas, and thus improve the heat exchange capacity of the fin structure and the heat exchange efficiency of the heat exchanger;

[0018] (2) A heat exchange tube flange extends outward from the heat exchange hole of the fin structure. When the heat exchange tube passes through the heat exchange hole, the heat exchange tube flange is sleeved on the outside of the heat exchange tube. The heat exchange tube flange increases the contact area between the heat exchange hole and the heat exchange tube, which not only makes the fixation of the heat exchange tube in the heat exchange hole more stable, but also increases the heat exchange area between the fin body and the heat exchange tube, thereby improving the heat exchange capacity of the fin structure;

[0019] (3) The outer periphery of the flange of the heat exchange tube of the fin structure is provided with a flue gas turbulence angle, which turbules the high-temperature flue gas, so that the high-temperature flue gas is evenly distributed around the outer periphery of the adjacent heat exchange tubes, thereby making the high-temperature flue gas evenly distributed around the outer peripheries of the multiple heat exchange tubes on the fin body, and further making the high-temperature flue gas evenly heat the cold water in the multiple heat exchange tubes fixed on the fin body, thereby ensuring the heat exchange effect of the heat exchanger;

[0020] (4) The flow guide boss of the fin structure includes a first flow boss, which is arranged between two adjacent heat exchange holes. A first flow channel is arranged in the first flow boss. The high-temperature flue gas flows closely to the outer periphery of two adjacent heat exchange tubes through the guidance of the first flow channel, so that the high-temperature flue gas is fully in contact with the heat exchange tubes, thereby improving the heat exchange capacity of the fin structure and the heat exchange efficiency of the heat exchanger;

[0021] (5) The flow-guiding boss of the fin structure also includes a flow-blocking boss, which is arranged on both sides of the plurality of heat exchange holes. Along the flow direction of the high-temperature flue gas, the flow-blocking boss is arranged downstream of the first flow-through boss. The high-temperature flue gas is further guided by the flow-blocking boss so that the high-temperature flue gas continues to flow toward the heat exchange tube in the middle of the fin body, thereby making the high-temperature flue gas fully contact with the heat exchange tube, improving the heat exchange capacity of the fin structure, and thus improving the heat exchange efficiency of the heat exchanger;

[0022] (6) The flow guide boss of the fin structure also includes a second flow boss arranged in the middle, and a second flow channel is arranged in the second flow boss. Along the flow direction of the high-temperature flue gas, the second flow boss is located downstream of the first flow boss, and the high-temperature flue gas flows out from the second flow channel, thereby realizing the outflow of the high-temperature flue gas on the fin body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, are used to explain the principle of the utility model. In the accompanying drawings, like reference numerals are used to represent like elements.

[0024] Figure 1 This is a schematic structural diagram of a heat exchanger fin structure according to an embodiment of the utility model;

[0025] Figure 2 A smoke distribution diagram of a heat exchanger fin structure according to an embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the installation of a heat exchanger fin structure in a heat exchanger according to an embodiment of the utility model.

[0027] In the figure: 1. fin body; 2. heat exchange hole; 3. flow guide flange; 4. heat exchange tube flange; 5. flue gas turbulence angle; 6. first flow boss; 7. flow blocking boss; 8. second flow boss; 9. heat exchange tube. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] See also Figure 1 to Figure 3 A heat exchanger fin structure according to an embodiment of the utility model comprises a fin body 1, a plurality of heat exchange holes 2 arranged on the fin body 1, and at least two guide flanges 3 arranged on the fin body 1, the plurality of heat exchange holes 2 are located between the at least two guide flanges 3, and the at least two guide flanges 3 are arranged facing the direction of the plurality of heat exchange holes 2; the heat exchange holes 2 are used for allowing the heat exchange tubes 9 to pass through and for limiting the heat exchange tubes 9, and the at least two guide flanges 3 guide the high-temperature flue gas to converge in the direction of the plurality of heat exchange holes 2.

[0030] In the present application, the heat exchanger fin structure includes a fin body 1, on which a plurality of heat exchange holes 2 are arranged. The heat exchange holes 2 are through holes arranged on the fin body 1. The heat exchange tubes 9 pass through the heat exchange holes 2, so that the heat exchange holes 2 limit the position of the heat exchange tubes 9 on the fin body 1, so that when the high-temperature flue gas flows through the fin body 1, heat exchange is carried out with the heat exchange tubes 9 to achieve the heating of the cold water in the heat exchange tubes 9.

[0031] In the present application, at least two flow-guiding flanges 3 are also provided on the fin body 1. When the high-temperature flue gas flows through the fin body 1, the at least two flow-guiding flanges 3 guide the high-temperature flue gas. Since on the fin body 1, a plurality of heat exchange holes 2 are located between the at least two flow-guiding flanges 3, and at least two flow-guiding flanges 3 are arranged facing the direction of the heat exchange holes 2, when the high-temperature flue gas flows into the fin body 1, under the guidance of the at least two flow-guiding flanges 3, the high-temperature flue gas flows in the direction close to the plurality of heat exchange holes 2, that is, the high-temperature flue gas flows in the direction of the plurality of heat exchange tubes 9, so that the high-temperature flue gas can better exchange heat with the cold water in the heat exchange tubes 9, reduce the heat loss of the high-temperature flue gas, and then improve the heat exchange capacity of the fin structure, and improve the heat exchange efficiency of the heat exchanger.

[0032] In this embodiment, the heat exchange hole 2 has a heat exchange tube flange 4 extending outward, and when the heat exchange tube 9 passes through the heat exchange hole 2, the heat exchange tube flange 4 is sleeved on the outside of the heat exchange tube 9 to fix the heat exchange tube 9. In this application, the heat exchange tube flange 4 extends outward from the heat exchange hole 2, and when the heat exchange tube 9 passes through the heat exchange hole 2, the heat exchange tube flange 4 is sleeved on the outside of the heat exchange tube 9. On the one hand, the heat exchange tube flange 4 is equivalent to extending the inner wall thickness of the heat exchange hole 2, thereby increasing the contact area between the heat exchange hole 2 and the heat exchange tube 9, making the fixation of the heat exchange tube 9 in the heat exchange hole 2 more stable.

[0033] On the other hand, the heat exchange tube flange 4 can absorb the heat of the high-temperature flue gas. The heat exchange tube flange 4 and the fin body 1 are an integrated structure. By sleeved on the outside of the heat exchange tube 9, the contact area between the fin body 1 and the heat exchange tube 9 can be increased, so that the heat absorbed by the fin body 1 can be better exchanged with the cold water in the heat exchange tube 9, thereby improving the heat exchange capacity of the fin structure and improving the heat exchange efficiency of the heat exchanger.

[0034] In this embodiment, a flue gas turbulence angle 5 is provided on the outer periphery of the heat exchange tube flange 4, and the flue gas turbulence angle 5 is used to turbulent the high-temperature flue gas. Since a plurality of heat exchange holes 2 are provided on the fin body 1, and the heat exchange holes 2 are used for the heat exchange tube 9 to pass through, so as to fix the heat exchange tube 9 on the fin body 1, the plurality of heat exchange holes 2 are distributed at intervals on the fin body 1, thereby realizing the distribution of the plurality of heat exchange tubes 9 at intervals on the fin body 1.

[0035] Furthermore, since the plurality of heat exchange holes 2 are located between at least two guide flanges 3, when the high-temperature flue gas flows toward the heat exchange tube 9 under the guidance of the at least two guide flanges 3, the heat exchange tube 9 located on the outside and close to the two guide flanges 3 has more high-temperature flue gas distributed on its periphery, while the heat exchange holes 2 located on the inside and away from the two guide flanges 3 have less high-temperature flue gas distributed on its periphery, resulting in uneven heating of the cold water in the plurality of heat exchange tubes 9 fixed on the fin body 1, affecting the heat exchange effect of the heat exchanger.

[0036] Therefore, in the present application, a flue gas turbulence angle 5 is provided on the periphery of the heat exchange tube flange 4. When the high-temperature flue gas flows toward the direction close to the heat exchange tube 9 under the guidance of at least two guide flanges 3, the flue gas turbulence angle 5 located on the periphery of the heat exchange tube flange 4 turbules the high-temperature flue gas, so that the high-temperature flue gas is evenly distributed on the periphery of the adjacent heat exchange tubes 9, thereby making the high-temperature flue gas evenly distributed on the periphery of the multiple heat exchange tubes 9 on the fin body 1, and then making the high-temperature flue gas evenly heat the cold water in the multiple heat exchange tubes 9 fixed on the fin body 1, thereby ensuring the heat exchange effect of the heat exchanger.

[0037] In this embodiment, the flue gas turbulence angles 5 are multiple and are distributed at equal distances along the periphery of the heat exchange tube flange 4. In this application, multiple flue gas turbulence angles 5 are arranged along the periphery of the heat exchange tube flange 4, and the multiple flue gas turbulence angles 5 are distributed at equal distances. When the high-temperature flue gas flows toward the direction close to the heat exchange tube 9 under the guidance of at least two guide flanges 3, the multiple flue gas turbulence angles 5 located at the periphery of the heat exchange tube flange 4 simultaneously turbulent the high-temperature flue gas, so that the high-temperature flue gas continues to flow toward the adjacent heat exchange tube 9, thereby making the high-temperature flue gas around the multiple heat exchange tubes 9 distributed at intervals on the fin body 1 evenly distributed, and then making the high-temperature flue gas heat the cold water in the multiple heat exchange tubes 9 fixed on the fin body 1 evenly, thereby ensuring the heat exchange effect of the heat exchanger.

[0038] In this embodiment, a flow guide boss is provided on the fin body 1, and the flow guide boss is provided between the plurality of heat exchange holes 2, so as to make the high-temperature flue gas flow close to the heat exchange tube 9. In the above embodiment, it is mentioned that the plurality of heat exchange holes 2 are distributed at intervals on the fin body 1, so that the plurality of heat exchange tubes 9 respectively limited by the plurality of heat exchange holes 2 are distributed at intervals on the fin body 1, so that when at least two flow guide flanges 3 guide the high-temperature flue gas, the high-temperature flue gas is distributed between the plurality of heat exchange tubes 9.

[0039] Furthermore, in the present application, a guide boss is also provided on the fin body 1, and the guide boss is located between the multiple heat exchange holes 2, which guides the high-temperature flue gas distributed between the multiple heat exchange tubes 9, so that the high-temperature flue gas flows closely to the periphery of the heat exchange tubes 9, thereby further making the high-temperature flue gas contact with the heat exchange tubes 9, better exchanging heat with the cold water in the heat exchange tubes 9, heating it, thereby improving the heat exchange capacity of the fin structure and improving the heat exchange efficiency of the heat exchanger.

[0040] In this embodiment, the flow guide boss includes a first flow boss 6 disposed between two adjacent heat exchange holes 2, and a first flow channel for high-temperature flue gas to circulate is provided in the first flow boss 6. In the present application, the flow guide boss includes a first flow boss 6, and the first flow boss 6 is disposed between two adjacent heat exchange holes 2. A first flow channel is provided in the first flow boss 6, and the high-temperature flue gas distributed between two adjacent heat exchange holes 2 can flow in the first flow channel. Through the guidance of the first flow channel, the high-temperature flue gas flows closely to the periphery of two adjacent heat exchange tubes 9, so that the high-temperature flue gas is fully in contact with the heat exchange tube 9, and better heat exchanges with the cold water in the heat exchange tube 9, heating it, thereby improving the heat exchange capacity of the fin structure and the heat exchange efficiency of the heat exchanger.

[0041] In this embodiment, the flow guide boss also includes flow blocking bosses 7 arranged on both sides, and the flow blocking bosses 7 guide the flow of the high-temperature flue gas. Along the flow direction of the high-temperature flue gas, the flow blocking bosses 7 are located downstream of the first flow-through boss 6. In the present application, the flow guide boss also includes flow blocking bosses 7, and the flow blocking bosses 7 are arranged on both sides of the plurality of heat exchange holes 2 to guide the high-temperature flue gas to flow out.

[0042] In actual applications, the general flow direction of the high-temperature flue gas is: flowing into the fin body 1 from one side, and when the high-temperature flue gas flows into the fin body 1, it is completely distributed along the length direction of the side of the fin body 1. Therefore, the present application needs to set a guide flange 3 to guide the high-temperature flue gas flowing in near the edge of the fin body 1 so that it flows toward the heat exchange tube 9 in the middle of the fin body 1; although the fin body 1 is provided with a guide flange 3, a flue gas turbulence angle 5 and a guide boss to change the flow direction of the high-temperature flue gas, the high-temperature flue gas will eventually flow out from the other side opposite to the fin body 1.

[0043] Therefore, in the present application, a baffle boss 7 is also provided on the fin body 1. On the one hand, after the guide flange 3 guides the high-temperature flue gas flowing in near the edge of the fin body 1, the baffle boss 7 guides the high-temperature flue gas flowing in near the edge of the fin body 1, so that the high-temperature flue gas continues to flow toward the heat exchange tube 9 in the middle of the fin body 1, so that the high-temperature flue gas is fully in contact with the heat exchange tube 9, thereby improving the heat exchange capacity of the fin structure, and then improving the heat exchange efficiency of the heat exchanger.

[0044] On the other hand, since the high-temperature flue gas will eventually flow out from the other side opposite to the fin body 1, even if the high-temperature flue gas is distributed between multiple heat exchange tubes 9, it will diffuse outward in the process of flowing out to the other side opposite to the fin body 1, resulting in the heat exchange tube 9 located downstream of the high-temperature flue gas flowing downstream being able to contact less high-temperature flue gas.

[0045] Therefore, in the present application, along the flow direction of the high-temperature flue gas, the flow-blocking boss 7 is arranged downstream of the first flow-through boss 6. The first flow-through boss 6 allows the high-temperature flue gas distributed between the multiple heat exchange tubes 9 to flow close to the outer periphery of the heat exchange tubes 9. Downstream of the flow direction of the high-temperature flue gas, the flow-blocking boss 7 guides the high-temperature flue gas diffusing outward, so that the high-temperature flue gas flows outward toward the other side opposite to the fin body 1 as much as possible from the middle area of ​​the fin body 1, so that the heat exchange tube 9 located downstream of the flow direction of the high-temperature flue gas can also be exposed to more high-temperature flue gas, thereby improving the heat exchange capacity of the fin structure and improving the heat exchange efficiency of the heat exchanger.

[0046] In this embodiment, the flow guide boss also includes a second flow boss 8 arranged in the middle, and a second flow channel for high-temperature flue gas to circulate is provided in the second flow boss 8. Along the flow direction of the high-temperature flue gas, the second flow boss 8 is located downstream of the first flow boss 6. In the present application, the flow guide boss also includes a second flow boss 8, and the second flow boss 8 is arranged in the middle area of ​​the fin body 1, and a second flow channel is provided in the second flow boss 8. Along the flow direction of the high-temperature flue gas, the second flow boss 8 is located downstream of the first flow boss 6, and the first flow boss 6 allows the high-temperature flue gas distributed between the multiple heat exchange tubes 9 to flow closely to the outer periphery of the heat exchange tubes 9. Downstream of the high-temperature flue gas flow direction, the high-temperature flue gas in the middle area of ​​the fin body 1 flows out from the second flow channel, and then flows out on the other side opposite to the fin body 1.

[0047] As mentioned above, in the downstream of the high-temperature flue gas flow direction, the high-temperature flue gas diffused outward is guided by the flow-blocking boss 7, so that the high-temperature flue gas flows outward toward the other side opposite to the fin body 1 as much as possible from the middle area of ​​the fin body 1. Therefore, in the process of the high-temperature flue gas flowing outward from the other side opposite to the fin body 1, the high-temperature flue gas diffused outward is gathered toward the middle area of ​​the fin body 1 under the guidance of the flow-blocking boss 7, contacts the heat exchange tube 9 located downstream of the high-temperature flue gas flow direction, and finally flows out from the second flow channel of the second flow-through boss 8, thereby realizing the outflow of the high-temperature flue gas on the fin body 1.

[0048] In this embodiment, the plurality of heat exchange holes 2 include a plurality of front row heat exchange holes and a plurality of rear row heat exchange holes, and along the flow direction of the high-temperature flue gas on the fin body 1, the plurality of rear row heat exchange holes are located downstream of the plurality of front row heat exchange holes. The first flow boss 6 is arranged between the front row heat exchange holes and the rear row heat exchange holes, so that in the process of the high-temperature flue gas flowing from the front row heat exchange holes to the rear row heat exchange holes, the high-temperature flue gas is guided by the first flow channel to flow close to the periphery of the rear row heat exchange holes, so that the high-temperature flue gas is fully in contact with the heat exchange tube 9, and better heat exchanges with the cold water in the heat exchange tube 9, heating it, thereby improving the heat exchange capacity of the fin structure and improving the heat exchange efficiency of the heat exchanger.

[0049] The second flow boss 8 is arranged in the middle area of ​​multiple rear-row heat exchange holes. Under the guidance of the flow-blocking boss 7, the high-temperature flue gas converges toward the middle area of ​​the fin body 1, contacts the heat exchange tubes 9 located in the rear-row heat exchange holes, and finally flows out from the second flow channel of the second flow boss 8, thereby realizing the outflow of high-temperature flue gas on the fin body 1.

[0050] In this embodiment, the cross-sectional range of the second flow channel is larger than the cross-sectional range of the first flow channel. According to the above description, the first flow boss 6 is arranged between two adjacent heat exchange tubes 9, so that the high-temperature flue gas distributed between the two adjacent heat exchange tubes 9 flows close to the heat exchange tubes 9 under the guidance of the first flow channel; and the second flow boss 8 is arranged on the side of the high-temperature flue gas outflow of the fin body 1, which is used for the high-temperature flue gas distributed in the middle area of ​​the fin body 1 to flow out. Therefore, in this application, the cross-sectional range of the second flow channel is set to be larger than the cross-sectional range of the first flow channel in order to speed up the outflow of the high-temperature flue gas after heat exchange, thereby further improving the heat exchange capacity of the fin structure.

[0051] This embodiment also provides a gas water heater, including the above-mentioned heat exchanger fin structure.

[0052] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present utility model.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A heat exchanger fin structure, characterized in that: The invention comprises a fin body (1), a plurality of heat exchange holes (2) arranged on the fin body (1), and at least two flow-guiding flanges (3) arranged on the fin body (1), wherein the plurality of heat exchange holes (2) are located between the at least two flow-guiding flanges (3), and the at least two flow-guiding flanges (3) are arranged facing the direction of the plurality of heat exchange holes (2); the heat exchange holes (2) are used for allowing heat exchange tubes (9) to pass through and for limiting the position of the heat exchange tubes (9), and the at least two flow-guiding flanges (3) are used for guiding high-temperature flue gas so as to make the high-temperature flue gas converge in the direction of the plurality of heat exchange holes (2).

2. A heat exchanger fin structure as claimed in claim 1, characterized in that: The heat exchange hole (2) has a heat exchange tube flange (4) extending outwardly. When the heat exchange tube (9) passes through the heat exchange hole (2), the heat exchange tube flange (4) is sleeved on the outside of the heat exchange tube (9) to fix the heat exchange tube (9).

3. A heat exchanger fin structure as claimed in claim 2, characterized in that: A flue gas turbulence angle (5) is provided on the outer periphery of the heat exchange tube flange (4), and the flue gas turbulence angle (5) is used to turbulent the high-temperature flue gas.

4. A heat exchanger fin structure as claimed in claim 3, characterized in that: The flue gas turbulence angles (5) are multiple and are distributed at equal distances along the outer circumference of the heat exchange tube flange (4).

5. A heat exchanger fin structure as claimed in claim 1, characterized in that: The fin body (1) is provided with a flow guide boss, which is arranged between the plurality of heat exchange holes (2) to allow high-temperature flue gas to flow close to the heat exchange tube (9).

6. A heat exchanger fin structure as claimed in claim 5, characterized in that: The flow guide boss comprises a first flow boss (6) arranged between two adjacent heat exchange holes (2), and a first flow channel for high-temperature flue gas to flow is arranged in the first flow boss (6).

7. A heat exchanger fin structure as claimed in claim 6, characterized in that: The flow-guiding boss also includes flow-blocking bosses (7) arranged on both sides, and the flow-blocking bosses (7) guide the flow of the high-temperature flue gas. Along the flow direction of the high-temperature flue gas, the flow-blocking bosses (7) are located downstream of the first flow-through boss (6).

8. A heat exchanger fin structure as claimed in claim 6, characterized in that: The flow guide boss also includes a second flow boss (8) arranged in the middle, and a second flow channel for high-temperature flue gas to flow is arranged in the second flow boss (8). Along the flow direction of the high-temperature flue gas, the second flow boss (8) is located downstream of the first flow boss (6).

9. A heat exchanger fin structure as claimed in claim 8, characterized in that: Along the flow direction of the high-temperature flue gas, the plurality of heat exchange holes (2) include a plurality of front-row heat exchange holes and a plurality of rear-row heat exchange holes, the first flow boss (6) is arranged between the plurality of front-row heat exchange holes and the plurality of rear-row heat exchange holes, and the second flow boss (8) is arranged in the middle area of ​​the plurality of rear-row heat exchange holes.

10. A heat exchanger fin structure as claimed in claim 8, characterized in that: The cross-sectional range of the second flow passage is larger than the cross-sectional range of the first flow passage.

11. A gas water heater, characterized in that: The invention comprises a heat exchanger fin structure as claimed in any one of claims 1 to 10.

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