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 a plurality of flow guide turned-over edges arranged on the fin body, the two sides of each heat exchange hole are each provided with one flow guide turned-over edge, and the two flow guide turned-over edges on the two sides of the same heat exchange hole are arranged in the direction of 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 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. The two sides of each heat exchange hole are respectively provided with one flow guide turnup, the flow guide turnup faces the direction of the heat exchange hole, and high-temperature smoke flows towards the direction close to the heat exchange hole under the guidance of the flow guide turnups, so that the high-temperature smoke exchanges heat with cold water in a heat exchange pipe better, 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 current household 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. 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 a plurality of guide flanges arranged on the fin body, wherein each of the heat exchange holes is provided with a guide flange on both sides, and the two guide flanges on both sides of the same heat exchange hole are arranged in the direction of the heat exchange hole; the heat exchange hole is used for allowing a heat exchange tube to pass through and to limit the heat exchange tube, and the guide flange guides the high-temperature flue gas to converge in the direction of the plurality of heat exchange holes.

[0006] Furthermore, the fin body is provided with a smoke transfer hole, which penetrates the fin body and is used for transferring smoke between the front and back sides of the fin body.

[0007] Furthermore, the smoke transmission holes are multiple and are arranged on the fin body and penetrate the fin body. The multiple smoke transmission holes are respectively arranged on one side of the multiple flow guide flanges close to the heat exchange hole.

[0008] Furthermore, the guide flange and the fin body are an integrated structure, and the guide flange is folded upward on the fin body to form the smoke transmission hole.

[0009] 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.

[0010] Furthermore, a smoke turbulence angle is provided at the top of the heat exchange tube flange, and the smoke turbulence angles are multiple and equidistantly distributed along the outer circumference of the heat exchange tube flange, and the smoke turbulence angles are used to turbulent the high-temperature smoke.

[0011] Furthermore, a guide boss is provided on the fin body, and the guide boss is provided between two adjacent heat exchange holes to allow the high-temperature flue gas to flow closely along the periphery of two adjacent heat exchange tubes.

[0012] Furthermore, a guide slope for guiding the high-temperature flue gas is provided on the outer periphery of the guide boss, and the guide slope is used to guide the high-temperature flue gas to the outer peripheries of two adjacent heat exchange tubes.

[0013] Furthermore, a flow boss is provided on the fin body, and a flow channel is provided in the flow boss. Along the flow direction of the high-temperature flue gas, the flow boss is located downstream of the guide boss, and the high-temperature flue gas flows out of the fin body from the flow channel.

[0014] 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 guide boss is arranged between the multiple front-row heat exchange holes and the multiple rear-row heat exchange holes, and the flow-through boss is arranged in the middle area of ​​the multiple rear-row heat exchange holes.

[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) Each heat exchange hole of the fin structure is provided with a guide flange on both sides, and the guide flanges on both sides of the same heat exchange hole are arranged in the direction of the heat exchange hole. Therefore, when the high-temperature flue gas flows into the fin body, under the guidance of the guide flange, the high-temperature flue gas flows in the direction close to each heat exchange hole on the fin body, that is, the high-temperature flue gas flows in the direction of multiple heat exchange tubes at the same time, so that the high-temperature flue gas can better exchange heat with the cold water in the heat exchange tube, 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) The fin body of the fin structure is also provided with a smoke transmission hole, which penetrates the fin body and connects the front and back sides of the fin body, so that when the high-temperature flue gas flows through the fin body, heat exchange can be performed with different positions of the heat exchange tube at the front and back sides of the fin body at the same time, heating the cold water in the heat exchange tube, thereby improving the heat exchange capacity of the fin structure and the heat exchange efficiency of the heat exchanger;

[0019] (3) The smoke transfer hole of the fin structure is arranged on the side of the guide flange close to the heat exchange hole. The high-temperature smoke is guided by the guide flange to accelerate the speed of the high-temperature smoke flowing through the smoke transfer hole, thereby accelerating the speed of the high-temperature smoke flowing to the back of the fin body, thereby improving the heat exchange capacity of the fin structure and the heat exchange efficiency of the heat exchanger;

[0020] (4) The fin body of the fin structure is also provided with a guide boss, and the guide boss is arranged between two adjacent heat exchange holes, so that the high-temperature flue gas flows along the outer periphery of the rear heat exchange tube when flowing from the front heat exchange tube to the rear heat exchange tube, so that the high-temperature flue gas is fully in contact with the heat exchange tube, thereby improving the heat exchange capacity of the fin structure and thus improving the heat exchange efficiency of the heat exchanger;

[0021] (5) A guide slope is provided on the outer periphery of the guide boss of the fin structure near the inflow direction of the high-temperature flue gas, so that when the high-temperature flue gas flows through the guide boss, it flows toward the heat exchange tubes on both sides under the guidance of the guide slope, so that the high-temperature flue gas flows from the front row of heat exchange tubes to the rear row of heat exchange tubes, and flows close to the outer periphery of the rear row of heat exchange tubes, 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;

[0022] (6) The fin body of the fin structure is also provided with a flow boss, and along the flow direction of the high-temperature flue gas, the flow boss is located downstream of the guide boss, and a flow channel is provided in the flow boss. When the high-temperature flue gas flows through the rear row of heat exchange tubes, the flue gas after heat exchange can flow out of the fin body through the flow channel in the flow boss, thereby accelerating the outflow of the flue gas after heat exchange. 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 A schematic diagram of the structure of a heat exchanger fin structure and a smoke distribution diagram of an embodiment of the utility model;

[0025] Figure 2 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.

[0026] In the figure: 1. fin body; 2. heat exchange hole; 3. flow guide flange; 4. smoke transfer hole; 5. heat exchange tube flange; 6. smoke turbulence angle; 7. flow guide boss; 71. flow guide slope; 8. flow boss; 9. heat exchange tube. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1 and Figure 2 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 a plurality of guide flanges 3 arranged on the fin body 1, each heat exchange hole 2 is provided with a guide flange 3 on both sides, and the two guide flanges 3 on both sides of the same heat exchange hole 2 are arranged facing the direction of the heat exchange hole 2; the heat exchange hole 2 is used for the heat exchange tube 9 to pass through and to limit the heat exchange tube 9, and the guide flange 3 guides the high-temperature flue gas to make the high-temperature flue gas converge in the direction of the plurality of heat exchange holes 2.

[0029] 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, and the heat exchange holes 2 are through holes arranged on the fin body 1. A heat exchange tube 9 passes through a heat exchange hole 2, so that the heat exchange hole 2 limits the position of the heat exchange tube 9 on the fin body 1, so that the plurality of heat exchange tubes 9 are limited by the plurality of heat exchange holes 2 respectively, and the plurality of heat exchange tubes 9 can be fixed on the fin body 1 at the same time, so that when the high-temperature flue gas flows through the fin body 1, heat exchange is carried out with the plurality of heat exchange tubes 9 at the same time, so that the heating of the cold water in the plurality of heat exchange tubes 9 is realized.

[0030] Since in the present application, each heat exchange hole 2 on the fin body 1 is provided with a guide flange 3 on both sides, and the guide flanges 3 on both sides of the same heat exchange hole 2 are arranged in the direction of the heat exchange hole 2, when the high-temperature flue gas flows into the fin body 1, under the guidance of the guide flange 3, the high-temperature flue gas flows in the direction close to each heat exchange hole 2 on the fin body 1, that is, the high-temperature flue gas flows in the direction of multiple heat exchange tubes 9 at the same time, 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.

[0031] In this embodiment, the fin body 1 is further provided with a smoke transfer hole 4, which penetrates the fin body 1 to transfer smoke between the front and back sides of the fin body 1. In practical applications, high-temperature smoke usually flows in from one side of the fin body 1, and when flowing through the front side of the fin body 1, it exchanges heat with the heat exchange tube 9 fixed on the fin body 1, heats the cold water in the heat exchange tube 9, and then flows out from the other side opposite to the fin body 1.

[0032] Since in the present application, the heat exchange tube 9 passes through the heat exchange hole 2 on the fin body 1, that is, the heat exchange tube 9 extends from the front side to the back side of the fin body 1, the fin body 1 of the present application is also provided with a smoke transmission hole 4, which passes through the fin body 1 and connects the front side and the back side of the fin body 1.

[0033] When the high-temperature flue gas flows in from one side of the fin body 1 and flows through the front side of the fin body 1, part of the high-temperature flue gas can flow to the back side of the fin body 1 through the smoke transfer hole 4, that is, after the high-temperature flue gas flows through the front and back sides of the fin body 1, it flows out from the other side opposite to the fin body 1. As a result, when the high-temperature flue gas flows through the fin body 1, it can simultaneously exchange heat with different positions of the heat exchange tube 9 on the front and back sides of the fin body 1, heat the cold water in the heat exchange tube 9, and thereby improve the heat exchange capacity of the fin structure and the heat exchange efficiency of the heat exchanger.

[0034] In this embodiment, the smoke transmission holes 4 are multiple and are arranged on the fin body 1 and penetrate the fin body 1. The multiple smoke transmission holes 4 are respectively arranged on one side of the multiple flow guide flanges 3 close to the heat exchange hole 2. In this application, the fin body 1 is provided with multiple smoke transmission holes 4, and the multiple smoke transmission holes 4 all penetrate the fin body 1, connecting the front and back sides of the fin body 1.

[0035] In the above embodiment, it is mentioned that: a guide flange 3 is provided on both sides of each heat exchange hole 2, and the guide flanges 3 on both sides of the same heat exchange hole 2 are provided in the direction of the heat exchange hole 2. In the present application, a plurality of smoke transfer holes 4 can be respectively provided on the side of a plurality of guide flanges 3 close to the heat exchange hole 2, so that when the high-temperature flue gas flows through the front of the fin body 1, the high-temperature flue gas is first guided by the guide flange 3 to flow in the direction of the heat exchange hole 2. In this process, part of the high-temperature flue gas flows to the back of the fin body 1 through the smoke transfer hole 4. Because the speed of the high-temperature flue gas flowing through the smoke transfer hole 4 is accelerated under the guidance of the guide flange 3, the speed of the high-temperature flue gas flowing toward the back of the fin body 1 can be accelerated, thereby improving the heat exchange capacity of the fin structure and improving the heat exchange efficiency of the heat exchanger.

[0036] In the present embodiment, the guide flange 3 and the fin body 1 are an integrated structure, and the guide flange 3 is folded upward on the fin body 1 to form a smoke transmission hole 4. In the present application, the guide flange 3 and the fin body 1 are an integrated structure made of the same plate. Specifically: the fin body 1 can be cut on both sides of the heat exchange hole 2 of the fin body 1, and the cut part is not completely separated from the fin body 1, and then the cut part is flipped and folded upward, so that the cut part forms a guide flange 3 set toward the heat exchange hole 2. At the same time, since the cut part is folded on the fin body 1, a through hole penetrating the fin body 1 is formed on the fin body 1 at the position of the original cut part, and the through hole is the smoke transmission hole 4.

[0037] By manufacturing the guide flange 3 and the smoke transmission hole 4 in this way, only the cutting and folding processes need to be performed on the fin body 1, and the manufacture of the guide flange 3 and the smoke transmission hole 4 can be completed at the same time, thereby not only making the production of the heat exchanger fin structure simple and convenient, easy to implement, enhancing the practicality of the heat exchanger fin structure, but also making the heat exchanger fin structure more stable.

[0038] In this embodiment, the heat exchange hole 2 has a heat exchange tube flange 5 extending outward, and when the heat exchange tube 9 passes through the heat exchange hole 2, the heat exchange tube flange 5 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 5 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 5 is sleeved on the outside of the heat exchange tube 9. On the one hand, the heat exchange tube flange 5 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.

[0039] On the other hand, the heat exchange tube flange 5 can absorb the heat of the high-temperature flue gas. The heat exchange tube flange 5 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.

[0040] In this embodiment, a flue gas turbulence angle 6 is provided at the top of the heat exchange tube flange 5. The flue gas turbulence angles 6 are distributed at equal distances along the outer periphery of the heat exchange tube flange 5. The flue gas turbulence angles 6 are used to turbulent the high-temperature flue gas. In this application, a guide flange 3 is provided on both sides of each heat exchange hole 2, and the guide flanges 3 on both sides of the heat exchange hole 2 are arranged facing the direction of the heat exchange hole 2. Therefore, the high-temperature flue gas is guided by the guide flange 3, so that the high-temperature flue gas can flow in the direction of the heat exchange hole 2, that is, in the direction of the heat exchange tube 9.

[0041] However, since the guide flanges 3 located on both sides of the heat exchange hole 2 are only set facing the direction of the heat exchange hole 2, but are not completely distributed along the periphery of the heat exchange hole 2, the high-temperature flue gas guided by the guide flanges 3 on both sides is unevenly distributed around the periphery of the heat exchange hole 2, which will cause the positions around the heat exchange hole 2 close to the guide flanges 3 to contact more high-temperature flue gas, while the positions far from the guide flanges 3 will contact less high-temperature flue gas, resulting in uneven contact between the high-temperature flue gas and the heat exchange tube 9, thereby affecting the heat exchange effect of the heat exchanger.

[0042] Therefore, in the present application, a plurality of flue gas turbulence angles 6 are arranged on the top of the heat exchange tube flange 5, and the plurality of flue gas turbulence angles 6 are distributed at equal distances along the outer periphery of the heat exchange tube flange 5. When the high-temperature flue gas flows toward the direction close to the heat exchange tube 9 under the guidance of the two guide flanges 3, the plurality of flue gas turbulence angles 6 located on the outer periphery of the heat exchange tube flange 5 turbulently flow the high-temperature flue gas, so that the high-temperature flue gas is evenly distributed around the outer periphery of the heat exchange tube 9, thereby evenly distributing the high-temperature flue gas around the outer periphery of the plurality of heat exchange tubes 9 on the fin body 1, and further making the high-temperature flue gas heat the cold water in the plurality of heat exchange tubes 9 fixed on the fin body 1 uniformly, thereby ensuring the heat exchange effect of the heat exchanger.

[0043] In this embodiment, the fin body 1 is further provided with a guide boss 7, which is provided between two adjacent heat exchange holes 2 to allow the high-temperature flue gas to flow closely around the outer periphery of two adjacent heat exchange tubes 9. In this application, the fin body 1 is provided with a plurality of heat exchange holes 2 for a plurality of heat exchange tubes 9 to pass through, thereby achieving the fixing of the plurality of heat exchange tubes 9 on the fin body 1. Therefore, in order to save space on the fin body 1, the plurality of heat exchange holes 2 are distributed in an array on the fin body 1, that is, the plurality of heat exchange tubes 9 fixed on the fin body 1 are distributed in an array.

[0044] As mentioned above, the high-temperature flue gas flows in from one side of the fin body 1 and flows out from the other side opposite to the fin body 1. The side of the fin body 1 where the high-temperature flue gas flows in is the front side, and the side where the high-temperature flue gas flows out is the rear side. The "front" and "rear" that appear below are based on this. When the high-temperature flue gas flows in from the front side of the fin body 1, it is completely distributed along the length direction of the fin body 1. Therefore, the high-temperature flue gas entering the fin body 1 first contacts the heat exchange tubes 9 in the front row, then flows to the heat exchange tubes 9 in the rear row, and finally flows out from the rear side of the fin body 1.

[0045] Since the flow guide flanges 3 located on both sides of the heat exchange tube 9 only guide the high-temperature flue gas to the heat exchange tube 9, but cannot guide the high-temperature flue gas flowing from the front heat exchange tube 9 to the rear heat exchange tube 9. Therefore, in the present application, a flow guide boss 7 is also provided on the fin body 1, and the flow guide boss 7 is provided between two adjacent heat exchange holes 2, so that the high-temperature flue gas flows along the outer periphery of the rear heat exchange tube 9 during the process of flowing from the front heat exchange tube 9 to the rear heat exchange tube 9, 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 further improving the heat exchange efficiency of the heat exchanger.

[0046] In this embodiment, a guide slope 71 for guiding the high-temperature flue gas is provided on the periphery of the guide boss 7, and the guide slope 71 is used to guide the high-temperature flue gas to the peripheries of two adjacent heat exchange tubes 9. In this application, since the guide boss 7 is arranged between two adjacent heat exchange tubes 9, in order to make the high-temperature flue gas flow through the guide boss 7, close to the peripheries of the heat exchange tubes 9 on both sides, the guide boss 7 needs to guide the high-temperature flue gas to both sides.

[0047] Therefore, in the present application, a guide slope 71 is provided on the outer periphery of one side of the guide boss 7 close to the inflow direction of the high-temperature flue gas, so that when the high-temperature flue gas flows through the guide boss 7, it flows toward the heat exchange tubes 9 on both sides under the guidance of the guide slope 71, so that the high-temperature flue gas flows from the front row of heat exchange tubes 9 to the rear row of heat exchange tubes 9, and flows closely to the outer periphery of the rear row of heat exchange tubes 9, so that the high-temperature flue gas is in full contact with the heat exchange tubes 9, thereby improving the heat exchange capacity of the fin structure and improving the heat exchange efficiency of the heat exchanger.

[0048] In this embodiment, a flow boss 8 is further provided on the fin body 1, and a flow channel is provided in the flow boss 8. Along the flow direction of the high-temperature flue gas, the flow boss 8 is located downstream of the guide boss 7, and the high-temperature flue gas flows out of the fin body 1 from the flow channel. In the above embodiment, it is mentioned that the high-temperature flue gas flows in from one side of the fin body 1 and flows out from the other side opposite to the fin body 1. A flow boss 8 is further provided on the fin body 1, and along the flow direction of the high-temperature flue gas, the flow boss 8 is located downstream of the guide boss 7.

[0049] When the high-temperature flue gas flows from the front row of heat exchange tubes 9 to the rear row of heat exchange tubes 9, the guide boss 7 located between two adjacent heat exchange tubes 9 in the rear row guides the high-temperature flue gas so that the high-temperature flue gas flows closely around the outer periphery of the rear row of heat exchange tubes 9; an overflow channel is provided in the overflow boss 8, and when the high-temperature flue gas flows through the rear row of heat exchange tubes 9, the flue gas after heat exchange can flow out of the fin body 1 through the overflow channel in the overflow boss 8, thereby accelerating the outflow of the flue gas after heat exchange.

[0050] 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 flow guide boss 7 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 flow guide boss 7 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 the heat exchange efficiency of the heat exchanger.

[0051] The flow boss 8 is arranged in the middle area of ​​multiple rear-row heat exchange holes. After flowing through the rear-row heat exchange holes, the high-temperature flue gas converges toward the middle area of ​​the fin body 1, and finally flows out from the flow channel of the flow boss 8, thereby realizing the outflow of high-temperature flue gas on the fin body 1.

[0052] This embodiment also provides a gas water heater, including the above-mentioned heat exchanger fin structure.

[0053] 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.

[0054] 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.

[0055] 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 a plurality of flow guiding flanges (3) arranged on the fin body (1), wherein each of the heat exchange holes (2) is provided with a flow guiding flange (3) on both sides, and the two flow guiding flanges (3) on both sides of the same heat exchange hole (2) are arranged facing the direction of the heat exchange hole (2); the heat exchange hole (2) is used for allowing a heat exchange tube (9) to pass through and for limiting the position of the heat exchange tube (9); the flow guiding flange (3) guides 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 fin body (1) is also provided with a smoke transmission hole (4), which penetrates the fin body (1) and is used for transmitting smoke between the front and back sides of the fin body (1).

3. A heat exchanger fin structure as claimed in claim 2, characterized in that: The smoke transmission holes (4) are multiple and are arranged on the fin body (1) and penetrate the fin body (1). The multiple smoke transmission holes (4) are respectively arranged on one side of the multiple flow guide flanges (3) close to the heat exchange hole (2).

4. A heat exchanger fin structure as claimed in claim 2, characterized in that: The flow-guiding flange (3) and the fin body (1) are an integrated structure, and the flow-guiding flange (3) is folded upward on the fin body (1) to form the smoke transmission hole (4).

5. A heat exchanger fin structure as claimed in claim 1, characterized in that: The heat exchange hole (2) has a heat exchange tube flange (5) extending outwardly. When the heat exchange tube (9) passes through the heat exchange hole (2), the heat exchange tube flange (5) is sleeved on the outside of the heat exchange tube (9) to fix the heat exchange tube (9).

6. A heat exchanger fin structure as claimed in claim 5, characterized in that: A flue gas turbulence angle (6) is provided at the top of the heat exchange tube flange (5). The flue gas turbulence angle (6) is a plurality of flue gas turbulence angles (6) distributed at equal distances along the outer periphery of the heat exchange tube flange (5). The flue gas turbulence angles (6) are used to turbulent the high-temperature flue gas.

7. A heat exchanger fin structure as claimed in claim 1, characterized in that: The fin body (1) is also provided with a flow guide boss (7), which is arranged between two adjacent heat exchange holes (2) to allow high-temperature flue gas to flow closely around the peripheries of two adjacent heat exchange tubes (9).

8. A heat exchanger fin structure as claimed in claim 7, characterized in that: The outer periphery of the flow-guiding boss (7) is provided with a flow-guiding inclined surface (71) for guiding the high-temperature flue gas, and the flow-guiding inclined surface (71) is used to guide the high-temperature flue gas to the outer peripheries of two adjacent heat exchange tubes (9).

9. A heat exchanger fin structure as claimed in claim 7, characterized in that: The fin body (1) is also provided with a flow boss (8), and a flow channel is provided inside the flow boss (8). Along the flow direction of the high-temperature flue gas, the flow boss (8) is located downstream of the guide boss (7), and the high-temperature flue gas flows out of the fin body (1) through the flow channel.

10. A heat exchanger fin structure as claimed in claim 9, 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 flow guide boss (7) is arranged between the plurality of front-row heat exchange holes and the plurality of rear-row heat exchange holes, and the flow-through boss (8) is arranged in the middle area of ​​the plurality of rear-row heat exchange holes.

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

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