Heat exchange fins, heat exchangers and water heaters

Abstract

The utility model provides a kind of heat exchange fin, heat exchanger and water heater.The heat exchange fin includes substrate, substrate includes the upstream region and downstream region being connected along vertical direction, heat exchange fin further includes multiple tube holes, tube hole includes multiple upstream tube holes being spaced apart in upstream region along horizontal direction and multiple downstream tube holes being arranged in downstream region, multiple upstream tube holes and multiple downstream tube holes are parallelly arranged;The number of upstream tube hole is s, the number of downstream tube hole is s-2, s is integer greater than or equal to 3, and except for the outermost upstream tube hole in horizontal direction in upstream tube hole, the rest upstream tube hole is aligned along vertical direction with downstream tube hole one by one.The specific structure of setting optimizes heat exchanger internal structure, improves heat exchange efficiency, and does not affect water heater performance and the appearance size of heat exchanger, so that the movement and box of heat exchanger can be universal, ensure the consistency and universality of platform.

Description

Technical Field

[0001] This utility model relates to a heat exchange fin, a heat exchanger, and a water heater. Background Technology

[0002] Gas water heaters heat water by producing high-temperature flue gas from combustion. The heat exchanger is the heat transfer medium between the two, while the fins are the core components that affect heat exchange efficiency, productivity, and other performance characteristics.

[0003] The core structure of existing heat exchangers consists of *s* heat exchange tubes in the downstream region and *s* heat exchange tubes in the upstream region, with fins nested within the 2*s* heat exchange tubes. This results in an excessive number of tubes, reducing heat exchange efficiency. Here, *s* is an integer greater than or equal to 2.

[0004] The arrangement of s-1 heat exchange tubes in both the upstream and downstream areas results in a smaller heat exchanger size compared to a heat exchanger with 2s heat exchange tubes. This leads to a smaller combustion chamber connected to it, which in turn reduces the maximum combustion load and results in insufficient hot water production. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned defects of the prior art and provide a heat exchange fin, a heat exchanger, and a water heater.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A heat exchange fin, characterized in that the heat exchange fin includes a substrate, the substrate includes an upstream region and a downstream region connected in a vertical direction, the heat exchange fin also includes a plurality of tube holes, the tube holes include a plurality of upstream tube holes spaced apart in the upstream region in a horizontal direction, and a plurality of downstream tube holes spaced apart in the downstream region, the plurality of upstream tube holes and the plurality of downstream tube holes are arranged in parallel.

[0008] The number of upstream pipe holes is s, and the number of downstream pipe holes is s-2, where s is an integer greater than or equal to 3. Except for the upstream pipe hole located on the outermost side along the horizontal direction, the remaining upstream pipe holes are aligned with the downstream pipe holes one by one along the vertical direction.

[0009] In this technical solution, by setting the number of upstream pipe holes on the heat exchange fins to 's', the number of downstream pipe holes to 's-2', and the arrangement of the upstream and downstream pipe holes, the heat exchange efficiency can be improved while reducing the number of heat exchange tubes, without affecting the performance of the water heater. Furthermore, by optimizing the internal structure of the heat exchanger through specific fin design, this technical solution does not affect the external dimensions of the heat exchanger, allowing for the interchangeability of the heat exchanger's core and housing, ensuring platform consistency and versatility.

[0010] Preferably, the substrate includes two sides disposed opposite to each other along the horizontal direction, the sides including an upstream side corresponding to the upstream region and a downstream side corresponding to the downstream region that are connected to each other;

[0011] The upstream side includes a vertical part, a horizontal part, and a connecting part connected to each other. The vertical part is arranged along the vertical direction and is arranged along the horizontal direction outside the outermost upstream pipe hole. The horizontal part is arranged along the horizontal direction and is located downstream of the upstream pipe hole along the vertical direction. The connecting part connects the vertical part and the horizontal part.

[0012] The downstream side is arranged along the vertical direction, and along the horizontal direction, the downstream side is recessed relative to the vertical portion towards the downstream pipe hole.

[0013] In this technical solution, by setting specific structures on the sides, an effective heat exchange area can be formed on the substrate, thereby increasing the proportion of effective heat exchange area.

[0014] Preferably, the side is provided with a first flange, a second flange and a third flange, the first flange is provided on the upstream side, the second flange is provided at the connection between the upstream side and the downstream side, and the third flange is provided on the downstream side. One end of the second flange is connected to the first flange, and a first notch is formed between the other end of the second flange and the third flange.

[0015] In this technical solution, by sequentially providing a first flange, a second flange, and a third flange on two horizontally opposite sides of the substrate, the overall flow channel of the flue gas can be effectively constrained. A first notch is formed between the second flange and the third flange to reduce the flow resistance on the outermost sides of the two heat exchange tubes.

[0016] Preferably, the substrate includes a downstream edge extending in a horizontal direction. Along the flow direction, the downstream edge is located downstream of the downstream orifice. The downstream edge has a recessed portion located between two adjacent downstream orifices and recessed towards the upstream orifice. The recessed portion has a fourth flange.

[0017] In this technical solution, by providing the recessed portion recessed toward the direction close to the upstream tube hole, the travel path of the flue gas can be increased, thereby increasing the heat exchange area. By providing the fourth flanging on the recessed portion, the flue gas can be made to flow around the heat exchange tube located in the downstream tube hole as much as possible, instead of directly flowing away between two adjacent downstream tube holes to lose heat.

[0018] Preferably, on the downstream edge, a second notch is formed between the third flanging and the fourth flanging; and / or,

[0019] A third notch is provided between two adjacent said fourth flangings.

[0020] In this technical solution, by providing the second notch and the third notch, the flue gas can flow out through the second notch and the third notch on the downstream edge.

[0021] Preferably, the length of the first notch is m, and the length of the second notch is n, where 0<m<n / 2, and the unit of both m and n is mm; and / or,

[0022] The length of the second notch is the same as the length of the third notch.

[0023] In this technical solution, by setting the proportional relationship between the length m of the first notch and the length n of the second notch, on the one hand, it is prevented that if the length m of the first notch is too small, the resistance of the outermost flow passage will be too large, resulting in a reduction in the high-temperature flue gas flowing through the flow passage, and the heat absorption capacity of the two outermost heat exchange tubes will be reduced, which in turn leads to a decrease in heat exchange efficiency; on the other hand, if the length m of the first notch is too large, the high-temperature flue gas will escape, increasing heat loss and reducing the hot water yield. By setting the length of the second notch to be equal to the length of the third notch, the flue gas can flow out uniformly through the second notch and the third notch on the downstream edge.

[0024] Preferably, the base plate is provided with a hollow region penetrating in the thickness direction of the base plate, and the hollow region is located between adjacent said tube holes.

[0025] In this technical solution, by providing the hollow region, the weight of the heat exchange fin can be effectively reduced, materials can be saved, and thus the heat exchange efficiency can be improved.

[0026] Preferably, the edge of each of the upstream tube holes is provided with an upstream tube hole flanging; and / or, the edge of the downstream tube hole is provided with a downstream tube hole flanging.

[0027] In this technical solution, by providing the upstream tube hole flanging on the edge of the upstream tube hole and the downstream tube hole flanging on the edge of the downstream tube hole, the heat exchange area can be effectively increased, thereby effectively increasing the heat exchange amount.

[0028] A heat exchanger is characterized in that it includes heat exchange tubes and a plurality of heat exchange fins as described above, wherein the heat exchange tubes are connected in series in the downstream or upstream tube holes of the plurality of heat exchange fins.

[0029] A water heater characterized in that it includes a heat exchanger as described above.

[0030] The positive and progressive effects of this utility model are as follows:

[0031] This invention improves heat exchange efficiency without affecting water heater performance by setting the number of upstream pipe holes to 's' and the number of downstream pipe holes to 's-2' on the heat exchange fins, and by specifying the arrangement of the upstream and downstream pipe holes. Furthermore, by optimizing the internal structure of the heat exchanger through specific fin design, this invention does not affect the external dimensions of the heat exchanger, allowing for the interchangeability of the heat exchanger's core and housing, thus ensuring platform consistency and versatility. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the heat exchange fins of a preferred embodiment of the present invention.

[0033] Figure 2 This is a front view structural diagram of the heat exchange fins of a preferred embodiment of the present invention.

[0034] Figure 3 for Figure 2 A magnified schematic diagram of part A in the middle.

[0035] Figure 4 This is a schematic diagram of the flue gas flow direction of the heat exchange fins in a preferred embodiment of the present invention.

[0036] Figure 5 This is a partial three-dimensional structural diagram of a heat exchanger according to a preferred embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures

[0038] Heat exchanger 100

[0039] Heat exchange fin 1

[0040] Substrate 10

[0041] Side 11

[0042] Upstream side 12

[0043] Vertical part 121

[0044] Horizontal section 122

[0045] Connecting part 123

[0046] Downstream side 13

[0047] First flip 141

[0048] Second flip 142

[0049] Third flip 143

[0050] First gap 151

[0051] Second gap 152

[0052] The third gap 153

[0053] Downstream edge 16

[0054] Recess 161

[0055] Fourth flip 162

[0056] Hollowed-out area 17

[0057] First hollowed-out area 171

[0058] Second hollowed-out area 172

[0059] Third hollow area 173

[0060] Fifth flip 174

[0061] Pipe hole 20

[0062] Upstream pipe hole 21

[0063] Upstream pipe flange 211

[0064] Downstream pipe hole 22

[0065] Downstream pipe flange 221

[0066] Heat exchanger tube 2

[0067] Vertical direction H

[0068] Flow direction F

[0069] Horizontal direction L Detailed Implementation

[0070] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0071] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

[0072] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0074] like Figures 1 to 4 As shown, this embodiment provides a heat exchange fin 1. The heat exchange fin 1 includes a substrate 10, which includes an upstream region and a downstream region connected along the vertical direction H. The heat exchange fin 1 also includes a plurality of tube holes 20, which include a plurality of upstream tube holes 21 spaced apart along the horizontal direction L in the upstream region and a plurality of downstream tube holes 22 spaced apart in the downstream region. The plurality of upstream tube holes 21 and the plurality of downstream tube holes 22 are arranged in parallel.

[0075] The number of upstream pipe holes 21 is s, and the number of downstream pipe holes 22 is s-2, where s is an integer greater than or equal to 3. Except for the outermost upstream pipe hole 21 located along the horizontal direction L, the other upstream pipe holes 21 are aligned one-to-one with the downstream pipe holes 22 along the vertical direction H.

[0076] In this way, by setting the number of upstream pipe holes 21 on the heat exchange fins 1 to 's', the number of downstream pipe holes 22 to 's-2', and the arrangement of the upstream and downstream pipe holes 21 and 22, the heat exchange efficiency can be improved while reducing the number of heat exchange tubes, without affecting the performance of the water heater. Furthermore, this technical solution optimizes the internal structure of the heat exchanger 100 by setting the specific structure of the heat exchange fins 1, without affecting the external dimensions of the heat exchanger 100, allowing the core and housing of the heat exchanger 100 to be interchangeable, ensuring platform consistency and versatility.

[0077] It should be noted that the heat exchange fins 1 in this embodiment adopt a double-layer heat exchange structure (please refer to...). Figure 1 and Figure 2 The upper layer is the upstream region, and the lower layer is the downstream region. The upstream region has *s* heat exchange tubes, each corresponding to one of the upstream tube holes 21; the downstream region has *s-2* heat exchange tubes, each corresponding to one of the downstream tube holes 22. In summary, the heat exchange fins 1 are nested within the *s-2* heat exchange tubes. High-temperature flue gas flows from the lower layer to the upper layer, meaning the flow direction F is from the upstream region to the downstream region. The high-temperature flue gas first passes over the heat exchange tubes and fins in the upstream region, and then passes through the heat exchange tubes and fins in the downstream region. During the flow, the flow state of the flue gas is affected by the fin structure, which effectively improves the heat exchange energy in the downstream region, thereby improving the overall heat exchange efficiency.

[0078] The substrate 10 includes two sides 11 disposed opposite each other along the horizontal direction L. Each side 11 includes an upstream side 12 corresponding to an upstream region and a downstream side 13 corresponding to a downstream region, which are connected to each other. The upstream side 12 includes a vertical portion 121, a horizontal portion 122, and a connecting portion 123, which are connected to each other. The vertical portion 121 is disposed along the vertical direction H and is disposed along the horizontal direction L outside the outermost upstream pipe hole 21. The horizontal portion 122 is disposed along the horizontal direction L and is located downstream of the upstream pipe hole 21 along the vertical direction H. The connecting portion 123 connects the vertical portion 121 and the horizontal portion 122. That is, the connected vertical portion 121, horizontal portion 122, and connecting portion 123 are disposed along the outer contour of the outermost upstream pipe hole 21, thereby effectively concentrating the flue gas. The downstream side 13 is disposed along the vertical direction H and is recessed along the horizontal direction L towards the downstream pipe hole 22 relative to the vertical portion 121. In this way, by setting the specific structure of the side 11, an effective heat exchange area of ​​the substrate 10 can be formed, thereby increasing the proportion of the effective heat exchange area.

[0079] Further, the side edge 11 is provided with a first flanging 141, a second flanging 142 and a third flanging 143. The first flanging 141 is arranged on the upstream side edge 12, the second flanging 142 is arranged at the connection between the upstream side edge 12 and the downstream side edge 13, the third flanging 143 is arranged on the downstream side edge 13, one end of the second flanging 142 is connected to the first flanging 141, and a first notch 151 is formed between the other end of the second flanging 142 and the third flanging 143. In this way, by sequentially arranging the first flanging 141, the second flanging 142 and the third flanging 143 on the two opposite side edges 11 of the base plate 10 disposed opposite to each other along the horizontal direction L, the overall flow channel of the flue gas can be effectively constrained. By forming the first notch 151 between the second flanging 142 and the third flanging 143, the flow resistance at the outermost sides of the two heat exchange tubes is reduced.

[0080] The base plate 10 includes a downstream edge 16 extending along the horizontal direction L. Along the flow direction F, the downstream edge 16 is located downstream of the downstream tube holes 22. The downstream edge 16 is provided with a recessed portion 161, which is located between two adjacent downstream tube holes 22 and recessed toward the direction close to the upstream tube holes 21. The recessed portion 161 is provided with a fourth flanging 162. In this way, by providing the recessed portion 161 recessed toward the direction close to the upstream tube holes 21, the travel path of the flue gas can be increased, thereby increasing the heat exchange area. By arranging the fourth flanging 162 on the recessed portion 161, the flue gas can be guided to flow around the heat exchange tubes in the downstream tube holes 22 as much as possible, instead of directly flowing away between two adjacent downstream tube holes 22 to cause heat loss.

[0081] On the downstream edge 16, a second notch 152 is formed between the third flanging 143 and the fourth flanging 162; a third notch 153 is provided between two adjacent fourth flangings 162. In this way, by providing the second notch 152 and the third notch 153, the flue gas can flow out through the second notch 152 and the third notch 153 on the downstream edge 16.

[0082] Preferably, the length of the first notch 151 is m, and the length of the second notch 152 is n, where 0 < m < n / 2, and the units of m and n are both mm. In this way, by setting the proportional relationship between the length m of the first notch 151 and the length n of the second notch 152, on the one hand, it is prevented that an excessively small length m of the first notch 151 leads to an excessively high flow resistance at the outermost flow channel, which reduces the amount of high-temperature flue gas flowing through this flow channel, reduces the heat absorption capacity of the two outermost heat exchange tubes, and further lowers the heat exchange efficiency; on the other hand, an excessively large length m of the first notch 151 will cause the loss of high-temperature flue gas, increase heat loss, and reduce the hot water yield.

[0083] The length of the second notch 152 is the same as the length of the third notch 153, so that the flue gas flows out uniformly through the second notch 152 and the third notch 153 on the downstream edge 16.

[0084] In this embodiment, a hollow region 17 is formed on the substrate 10, extending through the thickness direction of the substrate 10, and the hollow region 17 is located between adjacent tube holes 20. In this way, by setting the hollow region 17, the weight of the heat exchange fins 1 can be effectively reduced, saving materials and thus improving heat exchange efficiency.

[0085] Specifically, the cutout area 17 includes: a first cutout area 171 located between two adjacent upstream pipe holes 21 and two adjacent downstream pipe holes 22, a second cutout area 172 located only between adjacent upstream pipe holes 21 and downstream pipe holes 22, and a third cutout area 173 located only between two adjacent upstream pipe holes 21.

[0086] Preferably, the edges of the upstream pipe holes 21 are provided with upstream pipe hole flanges 211; the edges of the downstream pipe holes 22 are provided with downstream pipe hole flanges 221. In this way, by providing upstream pipe hole flanges 211 at the edges of the upstream pipe holes 21 and downstream pipe hole flanges 221 at the edges of the downstream pipe holes 22, the heat exchange area can be effectively increased, thereby effectively increasing the heat exchange capacity.

[0087] In summary, flanges of different sizes are installed at different positions on the heat exchange fins 1 to adjust the flue gas flow. This ensures that the high-temperature flue gas flows as close as possible to the heat exchange tubes, improving heat exchange efficiency. Furthermore, it makes the flue gas flow smoother and the heat exchange more uniform, avoiding excessive local resistance that could hinder exhaust. The flow direction F of the flue gas on the heat exchange fins 1 is as follows: Figure 4 As shown by the small arrow in the image.

[0088] like Figure 5 As shown, this embodiment also provides a heat exchanger, which includes heat exchange tubes 2 and a plurality of heat exchange fins 1 as described above. The heat exchange tubes 2 are connected in series in the downstream or upstream pipe holes of the plurality of heat exchange fins 1.

[0089] This embodiment also provides a water heater, which includes the heat exchanger described above.

[0090] This water heater can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the water heater to perform corresponding operations, thereby realizing intelligent control of the water heater and improving the user experience.

[0091] This embodiment improves heat exchange efficiency while reducing the number of heat exchange tubes by setting the number of upstream tube holes to 's', the number of downstream tube holes to 's-2', and the arrangement of the upstream and downstream tube holes, without affecting the performance of the water heater. Furthermore, by optimizing the internal structure of the heat exchanger through specific heat exchange fin design, this embodiment does not affect the external dimensions of the heat exchanger, allowing for the interchangeability of the heat exchanger's core and housing, thus ensuring platform consistency and versatility.

[0092] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A heat exchange fin, characterized in that, The heat exchange fin comprises a base plate, the base plate comprises an upstream region and a downstream region connected to each other along a vertical direction, the heat exchange fin further comprises a plurality of tube holes, the tube holes comprise a plurality of upstream tube holes arranged in the upstream region at intervals along a horizontal direction, and a plurality of downstream tube holes arranged in the downstream region, and the plurality of upstream tube holes and the plurality of downstream tube holes are arranged in parallel respectively; The number of the upstream tube holes is s, the number of the downstream tube holes is s-2, s is an integer greater than or equal to 3, and among the upstream tube holes, except for the upstream tube holes located at the outermost sides along the horizontal direction, the rest of the upstream tube holes are aligned with the downstream tube holes in a one-to-one correspondence along the vertical direction.

2. The heat exchange fin according to claim 1, characterized in that, The base plate comprises two side edges arranged oppositely along the horizontal direction, and the side edges comprise an upstream side edge connected to each other and corresponding to the upstream region, and a downstream side edge corresponding to the downstream region; The upstream side edge comprises a vertical portion, a horizontal portion and a connecting portion connected to each other, the vertical portion is arranged along the vertical direction and is located on the outer side of the outermost upstream tube hole along the horizontal direction; the horizontal portion is arranged along the horizontal direction and is located downstream of the upstream tube holes along the vertical direction, and the connecting portion connects the vertical portion and the horizontal portion; The downstream side edge is arranged along the vertical direction, and along the horizontal direction, the downstream side edge is recessed toward the direction close to the downstream tube holes relative to the vertical portion.

3. The heat exchange fins as described in claim 2, characterized in that, The side edge is provided with a first flanged edge, a second flanged edge and a third flanged edge, the first flanged edge is arranged on the upstream side edge, the second flanged edge is arranged at the joint of the upstream side edge and the downstream side edge, the third flanged edge is arranged on the downstream side edge, one end of the second flanged edge is connected with the first flanged edge, and a first notch is formed between the other end of the second flanged edge and the third flanged edge.

4. The heat exchange fins as described in claim 3, characterized in that, The base plate comprises a downstream edge extending along the horizontal direction, the downstream edge is located downstream of the downstream tube holes along the flow direction, the downstream edge is provided with a recessed portion, the recessed portion is located between two adjacent downstream tube holes and is recessed toward the direction close to the upstream tube holes, and the recessed portion is provided with a fourth flanged edge.

5. The heat exchange fins as described in claim 4, characterized in that, On the downstream edge, a second notch is formed between the third flanged edge and the fourth flanged edge; and / or, A third notch is arranged between two adjacent fourth flanged edges.

6. The heat exchange fins as described in claim 5, characterized in that, The length of the first notch is m, the length of the second notch is n, where 0<m<n / 2, and the units of m and n are both mm; and / or, The length of the second notch is the same as the length of the third notch.

7. The heat exchange fins as described in claim 1, characterized in that, The base plate is provided with a hollowed-out region penetrating through the base plate in the thickness direction of the base plate, and the hollowed-out region is located between adjacent tube holes.

8. The heat exchange fins as described in any one of claims 1-7, characterized in that, The edges of the upstream tube holes are all provided with upstream tube hole flanged edges; and / or, the edges of the downstream tube holes are provided with downstream tube hole flanged edges.

9. A heat exchanger, characterized in that, The heat exchanger comprises heat exchange tubes and a plurality of the heat exchange fins according to any one of claims 1 to 8, wherein the heat exchange tubes are arranged in series in the downstream tube holes or the upstream tube holes of the plurality of heat exchange fins.

10. A water heater, characterized in that, The water heater includes the heat exchanger as described in claim 9.

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