Turbulent flow piece, heat exchange device and gas water heating equipment

Abstract

The utility model belongs to the technical field of heat exchange, and particularly discloses a spoiler, a heat exchange device and gas water heating equipment. The spoiler is used for being matched with a heat exchange tube and comprises a long-strip-shaped spoiler, a plurality of spoiler through holes are formed in the spoiler at intervals in the length direction, each spoiler through hole is provided with a first hole wall and a second hole wall which are opposite in the length direction and arranged at intervals, each first hole wall is connected with a main spoiler, and an included angle is formed between the main spoiler and the spoiler. The free ends of every two adjacent main spoilers are arranged on the two opposite sides of the spoiler respectively, the free end of each main spoiler is provided with a matched side edge, the shape of each matched side edge is matched with the inner wall of a heat exchange tube, and a spoiler notch is formed in each matched side edge. The heat exchange device comprises a heat exchange tube and a spoiler, the spoiler is inserted into the heat exchange tube, and the matched side edge abuts against the inner wall of the heat exchange tube or a preset gap is formed between the matched side edge and the inner wall of the heat exchange tube. The turbulent flow effect of the turbulent flow piece can be improved, and then the heat exchange uniformity is improved.

Description

Technical Field

[0001] This utility model relates to the field of heating technology, and in particular to a flow-disrupting component, a heat exchange device, and a gas-fired hot water equipment. Background Technology

[0002] Gas water heaters heat water through heat exchange between high-temperature flue gas and water at a heat exchanger. The heat exchanger includes multiple heat exchange fins arranged side-by-side and heat exchange tubes running through the fins. Each heat exchange tube is connected to an inlet pipe and an outlet pipe. When the gas water heater is running, the burner located below the heat exchanger generates high-temperature flue gas. As the high-temperature flue gas flows upward through the heat exchange fins, it exchanges heat with the water in the heat exchange tubes, thus heating the water.

[0003] The prior art provides a heat exchanger that uses stainless steel tubes to replace the conventional copper tube structure in order to reduce the cost of the heat exchanger and improve its corrosion resistance. At the same time, the stainless steel tubes are elliptical tubes or racetrack-shaped tubes with a larger cross-sectional area than conventional round tubes to increase the heat exchange area and ensure heat exchange efficiency.

[0004] However, due to the low thermal conductivity of stainless steel tubes, the temperature of the lower part (the side closer to the flue gas flow direction) of the heat exchange tube is higher than that of the upper part, which leads to the formation of scale on the lower part of the heat exchange tube during long-term use, reducing the thermal conductivity of the heat exchange tube. At the same time, when the temperature of the lower inner wall of the heat exchange tube is too high, water vaporization is likely to occur, resulting in vaporization noise, affecting the user experience of the gas water heater, and shortening the service life of the heat exchanger. Utility Model Content

[0005] One of the technical problems solved by this invention is to provide a flow-turbing element that can effectively solve the problem of excessively high temperature on one side of the heat exchange tube during the heat exchange process, which leads to vaporization.

[0006] The second technical problem solved by this utility model is to provide a heat exchange device that can effectively solve the problem of excessively high temperature on one side of the existing heat exchange tube during the heat exchange process, which leads to vaporization.

[0007] The third technical problem solved by this utility model is to provide a gas-fired water heater that can effectively solve the technical problem of gasification noise generated during heat exchange and improve the user experience of the gas-fired water heater.

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A flow-dispersing component for use with a heat exchange tube, the flow-dispersing component comprising an elongated flow-dispersing plate, the flow-dispersing plate having a plurality of flow-dispersing holes spaced apart along its length, each flow-dispersing hole having a first hole wall and a second hole wall that are opposite to and spaced apart along the length, each first hole wall being connected to a main flow-dispersing plate that is angled to the flow-dispersing plate, the free ends of two adjacent main flow-dispersing plates being located on opposite sides of the flow-dispersing plate, each main flow-dispersing plate having a mating side at its free end, the shape of the mating side being adapted to the inner wall of the heat exchange tube, and a flow-dispersing notch being provided at the mating side.

[0010] Compared with the prior art, the turbulence-disrupting component of this utility model has the following advantages: Because multiple turbulence-disrupting holes are provided along the length of the turbulence plate, and each turbulence-disrupting hole's first hole wall is connected to a main turbulence-disrupting plate, with adjacent main turbulence-disrupting plates having opposite inclination directions relative to the turbulence plate, when the turbulence-disrupting component is applied to the heat exchange tube, the fluid enters the turbulence-disrupting hole from one end of the turbulence plate, bypasses the main turbulence-disrupting plate, and then changes direction under the guiding action of another main turbulence-disrupting plate, flowing towards another adjacent turbulence-disrupting hole. This process repeats, causing the fluid to flow in a serpentine bend when passing through the turbulence-disrupting component. This disturbs the fluid on opposite sides of the turbulence plate along its thickness direction, disrupting the laminar flow structure at the inner wall of the heat exchange tube and improving the heat transfer of the fluid inside the heat exchange tube. Uniformity reduces the probability of localized high temperatures and vaporization on the heat exchanger tube wall, improving heat exchange efficiency and enhancing user experience. Furthermore, the mating side of the main baffle at its free end improves installation stability within the heat exchanger tube by adapting to the inner wall. Additionally, the presence of a turbulence notch on the mating side allows some fluid to flow through into the turbulence orifice, increasing turbulence as the fluid passes through the main baffle. This also allows for a larger main baffle size while maintaining sufficient flow rate, further enhancing the turbulence effect on the heat exchanger tube wall and improving overall heat exchange efficiency.

[0011] In one embodiment, at least two of the turbulence notches are provided at intervals along the extension direction of the mating side;

[0012] And / or, the width of the turbulence notch gradually decreases along the direction toward the center of the main turbulence plate.

[0013] In one embodiment, the main spoiler has two side edges that are opposite to and spaced apart in the width direction of the spoiler plate. The side edges are spaced apart from the hole edges on the corresponding side of the spoiler hole to form a spoiler gap. The mating side is connected to the end of the two side edges away from the first hole wall.

[0014] And / or, the main spoiler is provided with side spoiler openings on opposite sides in the width direction.

[0015] In one embodiment, the main spoiler has an overflow hole at one end near the first hole wall.

[0016] In one embodiment, the flow passage extends to the first hole wall or to the baffle plate.

[0017] In one embodiment, the free end of the main spoiler is inclined toward the second hole wall corresponding to the spoiler hole, and the projection of the main spoiler on the spoiler plate is located inside the spoiler hole.

[0018] And / or, each of the second hole walls is connected to an auxiliary spoiler, the auxiliary spoiler being arranged at an angle relative to the spoiler plate.

[0019] In one embodiment, the free end of the auxiliary spoiler and the free end of the main spoiler corresponding to the adjacent spoiler hole are located on the same side of the spoiler.

[0020] In one embodiment, the spoiler has folded edges on both sides along its width direction to form folded edges that extend from one end of the spoiler to the other end.

[0021] In one embodiment, a protrusion is provided on the side of the folded edge that is away from the other folded edge, and the protrusions of the two folded edges are provided correspondingly.

[0022] And / or, at least one end of the folded edge is connected to a guide portion, the guide portions of the two folded edges are correspondingly arranged, and the two guide portions located at the corresponding ends approach each other in a direction away from the folded edge.

[0023] In one embodiment, the spoiler is bent on both sides along the width direction to form folded ears, and each side has a plurality of folded ears spaced apart along the length direction of the spoiler.

[0024] In one embodiment, each of the folded lugs has an abutting side adapted to the heat exchange tube;

[0025] And / or, the free ends of the two folded ears located on the same side and adjacent to each other are located on opposite sides of the spoiler.

[0026] In one embodiment, the flap is provided between two adjacent spoiler holes along the length of the spoiler.

[0027] And / or, the spoiler has a side notch on its side, and the side notch is provided in a one-to-one correspondence with the folded ear portion, and one side edge of the side notch is folded over to form the folded ear portion.

[0028] The second technical problem mentioned above is solved by the following technical solution:

[0029] A heat exchange device includes a heat exchange tube and a flow-deflecting element as described above. The flow-deflecting element is inserted into the heat exchange tube, and the mating side abuts against the inner wall of the heat exchange tube or has a predetermined gap.

[0030] Compared with the prior art, the heat exchange device described in this utility model has the following advantages: by adopting the above-mentioned heat exchange device, the uniformity of fluid heat exchange in the heat exchange tube can be improved, the problem of fluid vaporization caused by high temperature on one side of the heat exchange tube wall can be avoided, the vaporization noise during the heat exchange process of the heat exchange device can be reduced, and the heat exchange effect of the heat exchange device can be improved, while improving the user experience of the heat exchange device.

[0031] The third technical problem mentioned above is solved by the following technical solution:

[0032] A gas-fired hot water device includes a heat exchange device as described above.

[0033] Compared with the prior art, the gas-fired water heater of this utility model has the following advantages: by using the above-mentioned heat exchange device in the heat exchange device, the heat exchange effect can be improved, the vaporization phenomenon caused by local high temperature during heat exchange can be avoided, the probability of vaporization noise can be reduced, and the user experience of the gas-fired water heater can be improved. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the heat exchange device provided in Embodiment 1 of the present invention;

[0035] Figure 2 This is a longitudinal sectional view of the heat exchange device provided in Embodiment 1 of this utility model;

[0036] Figure 3 This is a front view of the heat exchange device provided in Embodiment 1 of this utility model;

[0037] Figure 4 This is a schematic diagram of the structure of the baffle provided in Embodiment 1 of this utility model;

[0038] Figure 5 for Figure 4 A magnified view of a section at point I;

[0039] Figure 6 A schematic diagram of fluid flow through a turbulence-inducing element is provided for Embodiment 1 of this utility model;

[0040] Figure 7This is a simulation diagram of fluid flow in a heat exchange tube provided in Embodiment 1 of the present invention;

[0041] Figure 8 A top view of the aerodynamic component provided in Embodiment 1 of this utility model;

[0042] Figure 9 A top view of the aerodynamic component provided in Embodiment 2 of this utility model;

[0043] Figure 10 for Figure 9 A magnified view of a section at point J;

[0044] Figure 11 A partial structural schematic diagram of a baffle provided in another embodiment of the present invention;

[0045] Figure 12 A partial structural schematic diagram of the baffle provided in another embodiment of the present utility model;

[0046] Figure 13 This is a schematic diagram of the structure of the baffle provided in Embodiment 3 of this utility model;

[0047] Figure 14 This is a magnified view of a portion of point K in section 13;

[0048] Figure 15 This is a front view of the spoiler provided in Embodiment 3 of the present invention;

[0049] Figure 16 This is a schematic diagram of the structure of the baffle provided in Embodiment 4 of this utility model;

[0050] Figure 17 for Figure 16 A magnified view of the area at point L.

[0051] Label Explanation:

[0052] 100. Fluid flow control components; 200. Heat exchange tubes;

[0053] 1. Spoiler; 11. Spoiler flow hole; 111. First hole wall; 112. Second hole wall; 12. Side notch; 2. Main spoiler; 2a. First main spoiler; 2b. Second main spoiler; 21. Spoiler notch; 22. Fitting side; 23. Flow hole; 24. Side spoiler opening; 3. Folded edge; 31. Lug; 4. Protrusion; 5. Guide; 6. Spoiler gap; 7. Folded ear; 71. Abutting side; 8. Auxiliary spoiler. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0056] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0057] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] Example 1

[0059] This embodiment provides a heat exchange device that can enhance the turbulence of fluid flow inside the heat exchange device, prolong the flow path and flow time of the fluid inside the heat exchange device, and improve the heat exchange effect.

[0060] like Figures 1 to 8As shown, the heat exchange device includes a heat exchange tube 200 and a flow-dispersing element 100 inserted inside the heat exchange tube 200. The heat exchange tube 200 has a heat exchange cavity for introducing fluid. The extension direction of the flow-dispersing element 100 is the same as the extension direction of the heat exchange tube 200. The flow-dispersing element 100 includes a flow-dispersing plate 1. The flow-dispersing plate 1 has a plurality of flow-dispersing holes 11 spaced apart along its length. Each flow-dispersing hole 11 has a first hole wall 111 and a second hole wall 112 arranged opposite to each other in the length direction of the flow-dispersing element 100. Each first hole wall 111 is connected to a main flow-dispersing plate 2 arranged at an angle to the flow-dispersing plate 1. The free ends of two adjacent main flow-dispersing plates 2 are located on opposite sides of the flow-dispersing plate 1. Each free end of the main flow-dispersing plate 2 is provided with a mating side 22. The shape of the mating side 22 is adapted to the inner wall of the heat exchange tube 200. A flow-dispersing notch 21 is opened at the mating side 22.

[0061] The turbulence-disrupting element 100 provided in this embodiment has multiple turbulence-disrupting holes 11 arranged along the length of the turbulence-disrupting plate 1, and each turbulence-disrupting hole 11 has a main turbulence-disrupting plate 2 connected to its first hole wall 111. The inclination directions of two adjacent main turbulence-disrupting plates 2 relative to the turbulence-disrupting plate 1 are opposite. When the turbulence-disrupting element 100 is applied to the heat exchange tube 200, the fluid enters the turbulence-disrupting hole 11 from one end of the turbulence-disrupting plate 1, bypasses the main turbulence-disrupting plate 2, and then changes direction under the guiding action of another main turbulence-disrupting plate 2 and flows to another adjacent turbulence-disrupting hole 11. This process is repeated, causing the fluid to flow in a serpentine bend when flowing through the turbulence-disrupting element 100. This can disturb the fluid on both sides of the turbulence-disrupting plate 1 along the thickness direction, disrupt the laminar flow structure at the inner wall of the heat exchange tube 200, improve the heat transfer uniformity of the fluid in the heat exchange tube 200, and reduce the flow rate. The probability of localized high temperatures on the tube wall of heat exchanger tube 200 leading to vaporization is reduced, thus improving the heat exchange efficiency and user experience of the heat exchanger. Furthermore, since the free end of the main baffle 2 is provided with a mating side 22, the mating side 22 can be adapted to the inner wall of the heat exchanger tube 200, improving the installation stability of the baffle 100 within the heat exchanger tube 200. Moreover, by providing a baffle notch 21 at the mating side 22, some fluid can flow through the baffle notch 21 into the baffle orifice 11, increasing the turbulence when the fluid flows through the main baffle 2. At the same time, while ensuring the flow rate of the fluid, the size of the main baffle 2 can be increased to better achieve the baffle effect on the flow at the tube wall of the heat exchanger tube 200, further improving the baffle effect and heat exchange efficiency.

[0062] It is worth noting that when the heat exchange device is a heat exchanger, the fluid flowing into the heat exchange tube 200 is water. The water exchanges heat with the flue gas flowing through the heat exchange tube 200 through the tube wall. The direction of the baffle 1 is preferably perpendicular to the flow direction of the flue gas, that is, the two adjacent main baffles 2 are close to the front and back sides of the heat exchange tube 200, respectively. As a result, when the water flows in the heat exchange tube 200, it flows back and forth between the inner walls of the front and back sides in an S-shape, which breaks the laminar flow of the inner walls of the front and back sides, improves the heat exchange uniformity, avoids the problem of excessively high local temperature on the front side leading to excessively high water temperature and vaporization after heat exchange, and also avoids the generation of local low temperature due to relatively low temperature on the back side, thereby improving the overall heating uniformity of the heat exchange tube 200 and improving the heat exchange performance of the heat exchange device.

[0063] For ease of subsequent description, the multiple main spoilers 2 are divided into a first main spoiler 2a and a second main spoiler 2b. The first main spoiler 2a and the second main spoiler 2b are spaced apart along the length of the spoiler 1. Therefore, the tilt direction and tilt angle of the first main spoiler 2a relative to the spoiler 1 are the same, and the tilt angle and tilt direction of the second main spoiler 2b relative to the spoiler 1 are the same.

[0064] In one embodiment, the free end of the main deflector 2 is inclined toward the second hole wall 112 of the corresponding deflection hole 11, and the projection of the main deflector 2 on the deflector plate 1 is located within the corresponding deflection hole 11, thereby better guiding the fluid into the deflection hole 11. In other embodiments, the main deflector 2 may also be arranged vertically relative to the deflector plate 1, or the free end of the main deflector 2 may be inclined in a direction away from the second hole wall 112 of the corresponding deflection hole 11.

[0065] The tilt angle of the main baffle 2 relative to the baffle plate 1 is A, 30°≤A≤90°, to better guide the fluid to flow in an S-shape. This allows the main baffle 2 to be closer to the wall of the heat exchange tube 200 while reducing its size and lowering costs. A can be, but is not limited to, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, and 90°.

[0066] In one embodiment, the mating side 22 abuts against the inner wall of the heat exchange tube 200, thereby preventing the heat exchanger from shaking within the heat exchange tube 200 and effectively improving the stability and reliability of the turbulence-disrupting element 100 within the heat exchange tube 200. In other embodiments, a preset gap, less than 0.5 mm, exists between the mating side 22 and the inner wall of the heat exchange tube 200.

[0067] In one embodiment, the heat exchange tube 200 is a circular tube, and the matching side 22 is an arc-shaped side. In other embodiments, the heat exchange tube 200 can be an elliptical tube or a racetrack-shaped tube, as long as the shape of the matching side 22 matches the shape of the inner wall of the heat exchange tube 200.

[0068] To further enhance the turbulence heat transfer effect, in one embodiment, at least two turbulence notches 21 are spaced apart along the extension direction of the mating side 22. This increases the length of the mating side 22 while avoiding disruption of the laminar flow at the corresponding pipe wall due to the presence of the mating side 22, thus ensuring the turbulence effect. The number of turbulence notches 21 is preferably 2 to 5, specifically 2, 3, 4, and 5, to better balance the installation stability, turbulence effect, and processing cost of the turbulence component 100.

[0069] In one embodiment, the width of the turbulence notch 21 gradually decreases along the direction towards the center of the main turbulence vane 2. This results in the turbulence notch 21 being wider near the pipe wall and relatively narrower away from the pipe wall. This allows more fluid to pass through the turbulence notch 21 and flush the corresponding pipe wall while maintaining fluid flow, disrupting laminar flow at the pipe wall and ensuring effective fluid flushing and heat exchange. Preferably, the turbulence notch 21 has a flared U-shaped structure, and the bottom of the turbulence notch 21 has an arc-shaped structure to reduce manufacturing difficulty.

[0070] To further improve the heat exchange effect, in one embodiment, the main baffle 2 has two side edges that are opposite to and spaced apart in the width direction of the baffle plate 1. The side edges are spaced apart from the hole edges on the corresponding sides of the baffle orifice 11 to form a baffle gap 6. The side edge 22 is connected to the end of the two side edges away from the first hole wall 111. By setting the baffle gap 6, some fluid can flow through the baffle gap 6 to the tube wall of the heat exchange tube 200 near the two sides of the baffle plate 1 in the width direction, further improving the fluid mixing uniformity in the heat exchange tube 200 and enhancing the flow baffle effect.

[0071] In one embodiment, the ratio of the width of the main spoiler 2 to the width of the spoiler 1 is 0.8 to 0.95. Further, the width of the spoiler gap 6 in the width direction of the spoiler 100 is 0.05 mm to 0.2 mm, specifically 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, and 0.2 mm, etc.

[0072] In one embodiment, the main spoiler 2 and the spoiler plate 1 are integrally formed to reduce the processing difficulty and cost of the spoiler component 100, and to improve the overall structural strength and rigidity of the spoiler component 100. In another embodiment, the main spoiler 2 can be processed separately and welded, riveted, or connected to the spoiler plate 1 in other ways.

[0073] Furthermore, the two side edges are parallel and spaced apart to simplify the processing of the main baffle 2. Side baffle ports 24 are provided at the side edges. The side baffle ports 24 allow some fluid to flow through these process gaps, further enhancing the baffle effect. This improves the ease of punching the main baffle 2, ensures mold strength, and improves the punching effect. Simultaneously, the side baffle ports 24 facilitate the avoidance of folding the main baffle 2, improving the punching and bending convenience of the main baffle 2. Moreover, the side baffle ports 24 prevent interference between the main baffle 2 and the heat exchange tube 200 wall, allowing the side edges of the main baffle 2 to be closer to the inner wall of the heat exchange tube 200, improving the uniformity of fluid turbulence in the circumferential direction of the heat exchange tube 200.

[0074] In one embodiment, the baffle 100 is symmetrically arranged with respect to a symmetrical plane that passes through the centerline of the baffle 1 along its width direction. This improves the uniformity of fluid flow on opposite sides of the baffle 1 along its width direction.

[0075] In one embodiment, the baffle plate 1 has folded edges 3 on both sides along the width direction. This prevents the sharp edges of the baffle plate 1 from scraping the inner wall of the heat exchange tube 200 when the baffle plate 100 is inserted into the heat exchange tube 200, thereby improving the safety of the flow guiding structure. At the same time, the folded edges 3 can also enhance the overall structural strength and rigidity of the baffle plate 100, reduce the probability of deformation of the baffle plate 100, and improve the stability and reliability of the baffle plate 100.

[0076] In one embodiment, the two folded edges 3 respectively form the opposite side walls of the disturbance flow hole 11, thereby increasing the width of the disturbance flow hole 11 while keeping the width of the spoiler plate 1 unchanged. In other embodiments, the opposite side walls of the disturbance flow hole 11 may also be spaced apart from the folded edges 3.

[0077] The folded edge 3 has a protruding part 4, and the protruding parts 4 of the two folded edges 3 are correspondingly arranged. The protruding part 4 is used to abut against the inner wall of the heat exchange tube 200 to avoid the problems of installation inconvenience and easy scratching caused by the folded edge 3 directly abutting against the inner wall of the heat exchange tube 200; at the same time, by using the protruding part 4 to abut against the inner wall of the heat exchange tube 200, the problem of the baffle 100 being unable to be installed into the heat exchange tube 200 due to burrs on the folded edge 3 or processing errors of the baffle 100 or the heat exchange tube 200 can also be effectively avoided.

[0078] In one embodiment, at least both ends of the folded edge 3 are provided with protrusions 4 to ensure that both ends of the turbulence-disrupting element 100 can be stably disposed in the turbulence-disrupting tube, reducing the probability of the turbulence-disrupting element 100 swaying in the heat exchange tube 200 and improving the placement stability and reliability of the turbulence-disrupting element 100. In other embodiments, the folded edge 3 may be provided with a plurality of protrusions 4 at intervals along its length.

[0079] To improve the ease of setting the protrusion 4, a lug 31 is provided on a portion of the folded edge 3 in a direction away from the spoiler 1. The protrusion 4 is provided corresponding to the lug 31. This improves the ease of setting the protrusion 4 while reducing the width of the folded edge 3 in other positions, saving materials and reducing costs. The lug 31 and the protrusion 4 are provided in a one-to-one correspondence.

[0080] To further improve the installation stability of the baffle 100 in the heat exchange tube 200, at least one end of each folded portion 3 is bent to form a guide portion 5. The guide portions 5 of the two folded portions 3 are correspondingly arranged. The guide portions 5 extend obliquely towards the other folded portion 3 in a direction away from the folded portion 3, so that the two guide portions 5 approach each other in a direction away from the folded portion 3. Thus, the guide portions 5 can guide the baffle 100 when it is inserted into the heat exchange tube 200, thereby guiding the baffle 100 into the heat exchange tube 200 and improving the smoothness of the assembly of the baffle 100 in the heat exchange tube 200.

[0081] This embodiment also provides a gas-fired water heater, which includes a condensing heat exchange device having the aforementioned heat exchange device. By employing the aforementioned heat exchange device in the condensing heat exchange device, the gas-fired water heater provided in this embodiment can improve the heat exchange effect, avoid vaporization caused by localized high temperatures during heat exchange, reduce the probability of vaporization noise, and improve the user experience of the gas-fired water heater.

[0082] Example 2

[0083] This embodiment provides a flow-deflecting element 100 and a heat exchange device including the flow-deflecting element 100. The structure of the flow-deflecting element 100 provided in this embodiment is basically the same as that of the flow-deflecting element 100 in the above embodiments, with only some differences in the configuration. This embodiment will not repeat the same structure as in Embodiment 1.

[0084] like Figure 9 and Figure 10As shown, in this embodiment, a flow passage 23 is provided on the side of the main baffle 2 near the first hole wall 111. The setting of the flow passage 11 allows some fluid to enter the flow passage 11 through the gap between the main baffle 2 and the wall of the heat exchange tube 200, and some fluid to enter the flow passage 11 through the flow passage 23. This realizes the continuous diversion and merging of fluid during the flow process, improves the turbulence effect, and also helps to ensure the smoothness of fluid flow, ensure the fluid flow rate of the heat exchange device, and thus ensure the heat exchange effect.

[0085] In this embodiment, the area of ​​one side of the main baffle plate 2 is S0, and the opening area of ​​the flow passage 23 on the main baffle plate 2 is S1, where S1 = 0.1S0 to 0.3S0. This avoids the flow passage 23 being too small, which would result in poor turbulence effect, and also avoids the flow passage 23 being too large, which would result in a significant reduction in the flow rate of fluid flowing to the inner wall of the heat exchange tube 200, thus improving the turbulence effect.

[0086] In one embodiment, the flow passage 23 is disposed in the middle of the main baffle 2 along the width direction, and the shape of the flow passage 23 can be rectangular, semi-elliptical, semi-circular or other shapes. This embodiment does not impose specific limitations on this.

[0087] In another embodiment, such as Figure 13 As shown, there can be two flow holes 23 spaced apart along the baffle plate 1 to reduce the size of a single flow hole 23.

[0088] In one embodiment, the flow passage 23 extends to the first hole wall 111 (e.g., Figure 10 (as shown) or extends to the adjacent spoiler 1 (as shown) Figure 11 As shown), in another embodiment, the flow passage 23 may also be spaced apart from the first hole wall 111 (e.g., Figure 12 (As shown).

[0089] Example 3

[0090] This embodiment provides a flow-dispersing element and a heat exchange device including the flow-dispersing element. The basic structure of the flow-dispersing element provided in this embodiment is the same as that in the above embodiments, with only some differences in the configuration. This embodiment will not repeat the structure that is the same as that in the above embodiments.

[0091] like Figures 13 to 15 As shown, in this embodiment, the baffle plate (1) is bent to form folded ears (7) on both sides along the width direction, and multiple folded ears (7) are provided on each side along the length direction of the baffle plate (1). By providing multiple folded ears 7, it is beneficial to turbulent the flow at the tube wall of the heat exchange tube 200 on both sides of the width direction of the baffle plate 1, thereby enhancing the turbulence effect and improving the installation stability and reliability of the baffle 100 in the heat exchange tube 200.

[0092] The folded part 7 has an abutting side 71 that is adapted to the inner wall of the heat exchange tube 200. This abutting side 71 helps to increase the stability of the fit between the folded part 7 and the heat exchange tube 200, and also helps to disrupt the laminar flow at the tube wall of the heat exchange tube 200, thus ensuring the turbulence effect.

[0093] In this embodiment, the folded portion 7 abuts against the inner wall of the heat exchange tube 200, thereby achieving stable and reliable installation of the baffle 100 in the heat exchange tube 200 and avoiding the problem of inconvenient installation caused by burrs on the edge of the baffle 1. At the same time, multiple folded portions 7 are spaced apart along the length of the baffle 1, which helps to increase the contact points between the baffle 100 and the inner wall of the heat exchange tube 200, further improving stability. In other embodiments, the folded portions 7 can also be spaced apart from the inner wall of the heat exchange tube 200, and the distance between the folded portions 7 and the inner wall of the heat exchange tube 200 is less than or equal to 2 mm.

[0094] Furthermore, the folded ear 7 is set at an angle relative to the extending direction of the baffle 1, which avoids the need for the entire folded ear 7 to be bent to fit against the inner wall of the heat exchange tube 200, thereby reducing the design difficulty of the baffle 100 and reducing the processing cost. In other embodiments, the folded ear 7 may also fit against the inner wall of the heat exchange tube 200 on one side.

[0095] To improve the ease of processing the folded ear portion 7, a side notch 12 is provided on the side of the spoiler 1. The side notch 12 is provided one-to-one with the folded ear portion 7, and one side edge of the side notch 12 is folded to form the folded ear portion 7. The side notch 12 is provided to improve the folding convenience of the folded ear portion 7. The edge position of the side notch 12 can be set to set the angle between the folded ear portion 7 and the extension direction of the spoiler 1, thereby improving the processing convenience of the spoiler 100. At the same time, the side notch 12 also allows some fluid to flow through the side notch 12, which helps to enhance the turbulence effect.

[0096] In this embodiment, a folded ear 7 is provided between two adjacent spoiler holes 11 along the length direction of the spoiler 1. By providing the folded ear 7 between two adjacent spoiler holes 11, the spoiler 1 has sufficient area for opening the side notch 12, thus avoiding the problem of insufficient local structural strength of the spoiler 1 due to the opening of the side notch 12.

[0097] To further improve the stability of the baffle 100, the free ends of the two adjacent folded ears 7 located on the same side are respectively located on opposite sides of the baffle 1. Thus, the mating positions of the two adjacent folded ears 7 and the heat exchange tube 200 are respectively located on opposite sides of the baffle 1, so that the structures on opposite sides of the baffle 1 can stably abut against the inner wall of the heat exchange tube 200.

[0098] Furthermore, the two folded ears 7, which are arranged opposite each other in the width direction of the spoiler 1, have the same folding direction relative to the spoiler 1. In other embodiments, the free ends of the two folded ears 7, which are arranged opposite each other in the width direction of the spoiler 1, may be located on opposite sides of the spoiler 1.

[0099] Example 4

[0100] This embodiment provides a flow-dispersing element and a heat exchange device including the flow-dispersing element. The flow-dispersing element provided in this embodiment has the same basic structure as the flow-dispersing element provided in the above embodiments, with only some differences in the configuration. This embodiment will not describe the same structure as the above embodiments again.

[0101] like Figure 16 and Figure 17 As shown, in this embodiment, each second hole wall 112 is connected to an auxiliary baffle 8, which is set at an angle relative to the baffle 1. By setting the auxiliary baffle 8, the turbulence effect on the fluid flow can be further enhanced, thereby improving the heat exchange uniformity of the heat exchange tube 200.

[0102] In this embodiment, the free end of the auxiliary baffle 8 and the free end of the main baffle 2 corresponding to the same baffle flow hole 11 are located on opposite sides of the baffle plate 1, thereby making the fluid channel between the main baffle 2 and the auxiliary baffle 8 of the same baffle flow hole 11 inclined relative to the baffle plate 1, which is more conducive to guiding the fluid to flow between the baffle flow holes 11. Furthermore, this arrangement allows the auxiliary baffle 8 to be arranged opposite to the adjacent main baffle 2 of the adjacent baffle flow hole 11, so that the fluid flowing to the auxiliary baffle 8 through the baffle gap 21 can act on the auxiliary baffle 8 and flow to the surroundings under the blocking effect of the auxiliary baffle 8, scouring to the surrounding pipe wall of the baffle pipe 200, further improving the baffle effect.

[0103] In this embodiment, for the non-end-to-end turbulence orifices 11, the distance between the free end of the auxiliary turbulence plate 8 and the second orifice wall 112 is smaller than the distance between the free end of the main turbulence plate 2 and the first orifice wall 111. The auxiliary turbulence plate 8 is spaced apart from the inner wall of the heat exchange tube 200, so that some fluid can flow between adjacent auxiliary turbulence plates 8 and main turbulence plates 2 of adjacent turbulence orifices 11, avoiding the problem of local high temperature in the heat exchange tube 200 caused by the absence of fluid in some parts of the heat exchange tube 200.

[0104] Furthermore, in this embodiment, the main spoiler 2 has flow holes 23. In the projection plane perpendicular to the length direction of the spoiler 1, at least a portion of the flow holes 23 is located within the projection range of the auxiliary spoiler 8 directly opposite it. Thus, some fluid can flow through the flow holes 23 to the adjacent spoiler flow holes 11 to reduce flow resistance and ensure fluid flow. The fluid flowing out of the flow holes 23 can at least partially act on the auxiliary spoiler 8 to diffuse and flow in all directions under the blocking effect of the auxiliary spoiler 8, thereby enhancing the turbulence effect.

[0105] The auxiliary spoiler 8 is preferably set at an obtuse angle to the spoiler 1, and the angle can be greater than 90° and less than 150°.

[0106] The edge shape of the auxiliary baffle 8 can be consistent with the tube wall shape of the heat exchange tube 200 so that the distance between the edge of the auxiliary baffle 8 and the tube wall of the heat exchange tube 200 can be approximately consistent everywhere, ensuring uniform flow everywhere.

[0107] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0108] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A flow-deflecting element for use with a heat exchange tube (200), characterized in that, The turbulence-disrupting component includes a long strip-shaped turbulence-disrupting plate (1). The turbulence-disrupting plate (1) is provided with a plurality of turbulence-disrupting holes (11) spaced apart along its length. Each turbulence-disrupting hole (11) has a first hole wall (111) and a second hole wall (112) that are opposite to each other and spaced apart along its length. Each first hole wall (111) is connected to a main turbulence-disrupting plate (2) that is angled to the turbulence-disrupting plate (1). The free ends of two adjacent main turbulence-disrupting plates (2) are respectively located on opposite sides of the turbulence-disrupting plate (1). Each free end of the main turbulence-disrupting plate (2) is provided with a mating side (22). The shape of the mating side (22) is adapted to the inner wall of the heat exchange tube (200). A turbulence-disrupting notch (21) is provided at the mating side (22).

2. The aerodynamic component according to claim 1, characterized in that, The turbulence notch (21) is provided at least two at intervals along the extension direction of the mating side (22); And / or, the width of the turbulence notch (21) gradually decreases along the direction toward the center of the main turbulence plate (2).

3. The aerodynamic component according to claim 1, characterized in that, The main spoiler (2) has two side edges that are opposite to each other and spaced apart in the width direction of the spoiler plate (1). The side edges are spaced apart from the hole edges on the corresponding side of the spoiler hole (11) to form a spoiler gap (6). The mating side (22) is connected to the end of the two side edges away from the first hole wall (111). And / or, the main spoiler (2) is provided with side spoiler openings (24) on opposite sides in the width direction.

4. The aerodynamic component according to claim 1, characterized in that, The main spoiler (2) has an overflow hole (23) at one end near the first hole wall (111).

5. The aerodynamic component according to claim 4, characterized in that, The flow passage (23) extends to the first hole wall (111) or to the baffle plate (1).

6. The aerodynamic element according to any one of claims 1-5, characterized in that, The free end of the main spoiler (2) is inclined toward the second hole wall (112) corresponding to the spoiler hole (11), and the projection of the main spoiler (2) on the spoiler plate (1) is located inside the spoiler hole (11). And / or, each of the second hole walls (112) is connected to an auxiliary spoiler (8), which is set at an angle relative to the spoiler plate (1).

7. The aerodynamic component according to claim 6, characterized in that, The free end of the auxiliary spoiler (8) and the free end of the main spoiler (2) corresponding to the same spoiler hole (11) are located on opposite sides of the spoiler plate (1).

8. The aerodynamic element according to any one of claims 1-5, characterized in that, The spoiler (1) has folded edges (3) on both sides along the width direction, and the folded edges (3) extend from one end of the spoiler (1) to the other end of the spoiler (1).

9. The aerodynamic component according to claim 8, characterized in that, The folded edge (3) has a protruding part (4) on the side opposite to the other folded edge (3), and the protruding parts (4) of the two folded edges (3) are provided correspondingly. And / or, at least one end of the folded edge (3) is connected to a guide (5), the guides (5) of the two folded edges (3) are provided correspondingly, and the two guides (5) located at the corresponding ends approach each other in a direction away from the folded edge (3).

10. The aerodynamic element according to any one of claims 1-5, characterized in that, The spoiler (1) is bent on both sides along the width direction to form folded ears (7), and each side of the folded ears (7) is provided with a plurality of them at intervals along the length direction of the spoiler (1).

11. The aerodynamic element according to claim 10, characterized in that, Each of the said folded portions (7) has an abutting side (71) adapted to the heat exchange tube (200); And / or, the free ends of the two folded ears (7) located on the same side and adjacent to each other are located on opposite sides of the spoiler (1).

12. The aerodynamic element according to claim 10, characterized in that, Along the length of the spoiler (1), the folded ear (7) is provided between each two adjacent spoiler holes (11); And / or, the side of the spoiler (1) is provided with a side notch (12), the side notch (12) is provided in a one-to-one correspondence with the folded ear (7), and one side edge of the side notch (12) is folded to form the folded ear (7).

13. A heat exchange device, comprising heat exchange tubes (200), characterized in that, It also includes a flow-disrupting element as described in any one of claims 1-8, wherein the flow-disrupting element is inserted into the heat exchange tube (200), and the mating side (22) abuts against the inner wall of the heat exchange tube (200) or has a predetermined gap.

14. A gas-fired hot water device, characterized in that, The heat exchange device as described in claim 13.

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