Heat exchanger and water heater

Abstract

The utility model discloses a heat exchange device and water heater relates to water heater technical field, wherein, heat exchange device includes box, heat exchange subassembly and heat insulating part, and the box is equipped with combustion chamber, and the inner wall surface of box is equipped with limiting piece, heat exchange subassembly is located at one side of combustion chamber, heat insulating part is located at the inner wall surface of box, and heat insulating part is equipped with installation slot, and limiting piece passes through installation slot, and abuts at the side of heat insulating part away from the inner wall surface of box, the technical scheme provided by the utility model can solve the fixed structure of simplifying heat insulating part, and the assembly reliability of reducing spare part is improved.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a heat exchange device and a water heater. Background Technology

[0002] The existing water heater housings used for assembling heat exchange components lack effective insulation fixing structures. Usually, additional pressure plates and multiple fasteners are required to tighten the insulation cotton, which not only results in a large number of parts and complicated assembly, but also poses a risk of the insulation cotton loosening or falling off during use, affecting the insulation effect and the overall reliability of the machine. Utility Model Content

[0003] The main purpose of this utility model is to propose a heat exchange device and a water heater, which aims to simplify the fixing structure of the heat insulation component, reduce the number of parts, and improve assembly reliability.

[0004] To achieve the above objectives, the heat exchange device proposed in this utility model includes: The housing includes a combustion chamber, and the inner wall of the housing is provided with a limiting component. A heat exchange assembly is located on one side of the combustion chamber; A heat insulation component is provided on the inner wall surface of the housing. The heat insulation component has a mounting groove. The limiting component passes through the mounting groove and abuts against the side of the heat insulation component away from the inner wall surface of the housing.

[0005] In one embodiment, the limiting member includes a first plate segment disposed on the inner wall of the box and a second plate segment bent and connected to the first plate segment. The first plate segment passes through the mounting groove, and the second plate segment abuts against the side of the heat insulation member opposite to the inner wall of the box.

[0006] In one embodiment, the second plate segment is inclined from the first plate segment toward the heat insulation member.

[0007] In one embodiment, the limiting member is configured as a limiting folding plate stamped from the outer wall of the housing toward the combustion chamber, and a through opening is formed on the edge of the housing near the limiting folding plate.

[0008] In one embodiment, the limiting member is configured as a limiting folding plate stamped from the outer wall of the housing toward the combustion chamber, and a through opening is formed on the edge of the housing near the limiting folding plate.

[0009] In one embodiment, the housing is further provided with a snap-fit ​​component, which engages with the edge of the heat insulation component. And / or, the housing has a protrusion on the side facing the combustion chamber, the protrusion abutting against the heat insulation member to create an airflow gap between the heat insulation member and the housing.

[0010] In one embodiment, the housing includes a bottom frame and a cover plate. The bottom frame has an opening, and the cover plate covers the opening and encloses the bottom frame to form the combustion chamber. The heat insulation component includes a first heat insulation component and a second heat insulation component. The first heat insulation component covers at least a portion of the inner wall surface of the bottom frame, and the second heat insulation component covers at least a portion of the inner wall surface of the cover plate. The limiting component includes a first limiting component and a second limiting component. The bottom frame is provided with the first limiting component to limit and cooperate with the first heat insulation component, and the cover plate is provided with the second limiting component to limit and cooperate with the second heat insulation component.

[0011] In one embodiment, at least two first limiting members are provided, and the at least two first limiting members are arranged in multiple rows at intervals along a first direction, and the multiple rows of first limiting members are staggered along a second direction. And / or, at least two second limiting members are provided, and at least two second limiting members are arranged in multiple rows at intervals along the first direction, and the multiple rows of second limiting members are staggered along the second direction; The first direction and the second direction are intersecting.

[0012] In one embodiment, at least two first limiting members are provided, and the at least two first limiting members are arranged in multiple rows at intervals along a first direction, and the multiple rows of first limiting members are staggered along a second direction. And / or, at least two second limiting members are provided, and at least two second limiting members are arranged in multiple rows at intervals along the first direction, and the multiple rows of second limiting members are staggered along the second direction; The first direction and the second direction are intersecting.

[0013] This utility model also proposes a water heater, including the heat exchange device described above.

[0014] This invention provides a limiting component on the inner wall of the housing and an installation groove on the insulation component. The limiting component passes through the groove and abuts against the side of the insulation component facing away from the inner wall, thus directly fixing the insulation component to the inner wall. Compared to existing technologies that rely on pressure plates to compress the insulation, resulting in a large number of parts, a relatively cumbersome assembly process, and potential loosening or detachment during use, this solution uses a limiting component integrated into the housing itself to replace the traditional pressure plate and fasteners used to compress the insulation, achieving reliable positioning and fixation of the insulation component. This eliminates the need for additional pressure plates and connecting screws, washers, and other components, and also eliminates the need for additional clip structures on the insulation. This simplifies the assembly process, reduces material costs and manufacturing complexity, improves the overall stability of the insulation component, reduces the risk of insulation failure due to unreliable fixation, and enhances the insulation effect and overall reliability of the machine. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of an embodiment of the water heater provided by this utility model; Figure 2 A schematic diagram of the structure of an embodiment of the heat exchange device provided by this utility model; Figure 3 A schematic diagram of another embodiment of the heat exchange device provided by this utility model; Figure 4 A schematic diagram of another embodiment of the heat exchange device provided by this utility model; Figure 5 A schematic diagram of another embodiment of the heat exchange device provided by this utility model.

[0017] Explanation of icon numbers: 1000. Water heater; 100. Heat exchanger; 10. Housing; 101. Combustion chamber; 102. Through opening; 103. Opening; 104. Flue; 11. Limiting component; 1101. First limiting component; 1102. Second limiting component; 111. First plate segment; 112. Second plate segment; 113. Reinforcing rib; 12. Protrusion; 13. Base frame; 1301. First fixing groove; 14. Cover plate; 1401. Second fixing groove; 15. Snap-fit ​​component ; 16. First mounting plate; 17. Second mounting plate; 20. Heat exchange assembly; 21. End plate; 22. Heat exchange body; 221. Heat exchange tube; 222. Heat exchange fins; 30. Insulation component; 301. Mounting groove; 31. First insulation component; 311. First insulation section; 32. Second insulation component; 321. Second insulation section; 40. Burner; 50. Fan assembly; 51. Smoke hood; 52. Fan; 200. Housing; 2001. Smoke outlet.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] The existing water heater housings used for assembling heat exchange components lack effective insulation fixing structures. Usually, additional pressure plates and multiple fasteners are required to tighten the insulation cotton, which not only results in a large number of parts and complicated assembly, but also poses a risk of the insulation cotton loosening or falling off during use, affecting the insulation effect and the overall reliability of the machine.

[0021] Therefore, this utility model proposes a heat exchange device 100, which aims to simplify the fixing structure of the heat insulation component 30, reduce the number of parts, and improve assembly reliability.

[0022] Please see Figures 1 to 3 In one embodiment of the present invention, the heat exchange device 100 includes a housing 10, a heat exchange component 20, and a heat insulation component 30; the housing 10 is provided with a combustion chamber 101, and a limiting component 11 is provided on the inner wall surface of the housing 10; the heat exchange component 20 is provided on one side of the combustion chamber 101; the heat insulation component 30 is provided on the inner wall surface of the housing 10, and the heat insulation component 30 is provided with a mounting groove 301, the limiting component 11 passes through the mounting groove 301 and abuts against the side of the heat insulation component 30 away from the inner wall surface of the housing 10.

[0023] The heat exchange device 100 is applied to a condensing gas water heater 1000, which includes a casing 200 and the heat exchange device 100. The casing 200 has a main air inlet and a flue gas outlet 2001, and its internal structure includes an air duct communicating with the main air inlet to guide external air in. The heat exchange device 100 includes a housing 10, a burner 40, a heat exchange assembly 20, and a fan assembly 50. The housing 10 has a flue 104 for flue gas circulation. Due to the different types of condensing gas water heaters 1000, the arrangement of the burner 40, the heat exchange assembly 20, and the fan assembly 50 may differ, and the position of the first interface in the housing 10 may also vary. This solution is applicable to forced draft or forced blast type gas water heaters 1000. Taking a forced-draft gas water heater 1000 as an example, the burner 40, heat exchange component 20, and fan component 50 are arranged sequentially from bottom to top along the height direction of the casing 200: the burner 40 is located inside the housing 10 away from the first interface and is connected to the smoke inlet end of the flue 104; the heat exchange component 20 is located on one side of the combustion chamber 101 in the height direction of the casing 200, specifically at the top of the housing 10, including two end plates 21 arranged opposite each other along the length direction of the casing 200 and a heat exchange body 22 located between the two end plates 21. The heat exchange body 22 includes a heat exchange tube 221 that extends at least partially into the flue 104, and heat exchange fins 222 sleeved on the heat exchange tube 221 for absorbing the heat of the high-temperature flue gas to heat the water flowing through the heat exchange tube 221; the top of the housing 10 has a first interface, and the smoke outlet end of the flue 104 is connected to the first interface. The fan assembly 50 includes a smoke hood 51 and a fan 52 disposed on the smoke hood 51. The smoke hood 51 has a second interface that is opposite to and connected to the first interface. Its smoke outlet is connected to the air inlet of the fan 52, and the air outlet of the fan 52 is connected to the smoke exhaust port 2001 of the housing 200. The space inside the housing 10 between the burner 40 and the heat exchange assembly 20 forms a combustion chamber 101. The combustion chamber 101 is connected to the first interface, allowing air introduced from the main air inlet through the air duct to enter the bottom of the burner 40 as combustion air. Inside the combustion chamber 101, the air mixes with the combustion gas and burns. The resulting high-temperature flue gas flows upward through the flue 104, thoroughly flushing the heat exchange tubes 221 and heat exchange fins 222 in the heat exchange assembly 20, completing the first stage of heat exchange. Subsequently, the flue gas continues to rise, entering the first interface at the top of the housing 10 through the flue duct 104's exhaust end, and is then drawn by the fan 52 through the second interface of the smoke hood 51, finally being discharged from the fan 52's exhaust port 2001. During this process, because the heat exchange assembly 20 is positioned above the combustion chamber 101 and close to the flue gas outlet path, it helps to efficiently recover waste heat from the flue gas. Especially under condensation conditions, water vapor in the flue gas can condense on the low-temperature heat exchange surface and release latent heat, further improving the overall thermal efficiency of the unit.Meanwhile, this layout ensures that the combustion, heat exchange, and exhaust processes are connected in an orderly manner in the vertical direction. The overall structure is relatively compact, and the airflow path is relatively reasonable, which is conducive to maintaining combustion stability and promoting the improvement of heat exchange efficiency.

[0024] Based on the above, it can be understood that, considering that the heat exchange fins 222 are used to absorb the heat of high-temperature flue gas to heat the water flowing through the heat exchange tubes 221, in order to prevent the heat of the high-temperature flue gas from dissipating from the housing 10 and affecting the heat exchange effect of the heat exchange components 20, as mentioned earlier, the existing technology generally installs insulation cotton on the inner wall of the housing 10. However, the housing 10 of the existing water heater 1000 usually lacks a structure for fixing the insulation cotton, often requiring the addition of pressure plates and multiple fasteners to press and fix the insulation cotton. This not only increases the number of parts and complicates the assembly process, but may also cause the pressure plates to loosen or even the insulation cotton to fall off due to long-term heating or vibration, thereby weakening the heat insulation performance and affecting the overall thermal efficiency and reliability of the machine.

[0025] To address the aforementioned challenges, in this embodiment, the inner wall of the housing 10 is provided with a limiting member 11 and a heat insulation member 30. The heat insulation member 30 can be made of flexible heat insulation cotton, which has good thermal insulation properties and a certain degree of deformation adaptability, making it easy to conform to the contour of the inner wall of the housing 10. The heat insulation member 30 is provided with a mounting groove 301, the shape of which can be circular, rectangular, or other irregular shapes, specifically adapted to the shape of the limiting member 11 to facilitate the smooth passage of the limiting member 11. During actual assembly, the limiting member 11 passes through the mounting groove 301 and abuts against the side of the heat insulation member 30 away from the inner wall of the housing 10. This effectively limits and fixes the heat insulation member 30, helping to prevent it from shifting or falling off due to vibration or thermal expansion and contraction during use. It is worth noting that the number of limiting members 11 and heat insulation members 30 can be set to one or more according to actual needs; for example, multiple limiting members 11 can be set in conjunction with a single heat insulation member 30, which can at least partially cover the inner wall surface of the box 10—it can be partial coverage or complete coverage, and the specific form is not limited here. Accordingly, multiple limiting members 11 can be arranged in multiple rows along the circumference of the box 10 and staggered in the length direction of the box 10 to improve the uniformity of fixing; at the same time, the heat insulation member 30 is provided with a corresponding number of matching mounting slots 301, so that each limiting member 11 can pass through the corresponding mounting slot 301 one by one and abut against the outside of the heat insulation member 30, thereby simplifying the structure while enhancing the stability of the fixing of the heat insulation member 30 and the convenience of assembly.

[0026] Therefore, compared to existing technologies that rely on pressure plates to compress the insulation cotton, resulting in a large number of parts, a relatively cumbersome assembly process, and potential loosening or detachment during use, this solution utilizes the integrated limiting component 11 within the housing 10 to replace the traditional pressure plate and matching fasteners used to compress the insulation cotton, achieving reliable positioning and fixation of the insulation component 30. This eliminates the need for additional pressure plates and their connecting screws, washers, and other components, and also eliminates the need for additional clip structures on the insulation cotton. While simplifying the assembly process, reducing material costs and manufacturing complexity, it also helps improve the overall stability of the insulation component 30, reduces the risk of insulation failure due to unreliable fixation, and enhances the insulation effect and overall reliability of the machine.

[0027] like Figure 3 and Figure 4 As shown, in one embodiment, the limiting member 11 includes a first plate segment 111 disposed on the inner wall surface of the housing 10, and a second plate segment 112 bent and connected to the first plate segment 111. The first plate segment 111 passes through the mounting groove 301, and the second plate segment 112 abuts against the side of the heat insulation member 30 away from the inner wall surface of the housing 10.

[0028] In this embodiment, the limiting member 11 is integrally formed or fixedly connected to the housing 10 via a first plate segment 111, and a second plate segment 112 for pressing the heat insulation member 30 is formed by means of a bending structure. This allows the heat insulation member 30 to be inserted into the first plate segment 111 by aligning the mounting groove 301 with the first plate segment 111 during assembly, and the second plate segment 112 will naturally abut against its outer surface, thereby limiting and fixing the heat insulation member 30. This structure eliminates the need for additional pressure plates or fasteners, which helps simplify the assembly process, reduce the number of parts, and improve the stability of the heat insulation member 30 during long-term use, reducing the risk of heat insulation performance degradation due to loosening of the heat insulation member 30.

[0029] like Figure 3 and Figure 4 As shown, in one embodiment, the second plate segment 112 is inclined from the first plate segment 111 toward the heat insulation member 30.

[0030] In this embodiment, the second plate segment 112 is inclined towards the heat insulation component 30 from the first plate segment 111, allowing the second plate segment 112 to fit more tightly against the side of the heat insulation component 30 away from the inner wall of the housing 10, thus enhancing the pressing effect of the limiting member 11 on the heat insulation component 30. This design helps improve the stability of the heat insulation component 30 installation and further reduces the risk of displacement of the heat insulation component 30 due to vibration or thermal expansion and contraction, thereby ensuring long-term stability and reliability. In addition, this design simplifies the assembly process, eliminating the need for additional complex fixing devices, which helps reduce overall costs and improve production efficiency.

[0031] like Figure 3and Figure 4 As shown, in one embodiment, the limiting member 11 is configured as a limiting folding plate stamped from the outer wall of the housing 10 toward the combustion chamber 101, and a through opening 102 is formed on the edge of the housing 10 near the limiting folding plate.

[0032] In this embodiment, the limiting folding plate is integrally formed onto the housing 10 through a stamping process, eliminating the need for additional welding or assembly of independent components. This simplifies the manufacturing process and enhances structural strength. The through-hole 102 facilitates material flow and forming during the stamping process, while providing sufficient deformation space for the limiting folding plate to extend stably towards the combustion chamber 101. The limiting folding plate thus formed constitutes the aforementioned first plate segment 111 and second plate segment 112, which pass through the mounting groove 301 of the heat insulation component 30 and abut against the side facing away from the inner wall of the housing 10, effectively fixing the heat insulation component 30. This structure not only reduces the number of parts and assembly steps but also helps improve the positioning reliability of the heat insulation component 30 under high temperature and vibration conditions, thereby enhancing the overall thermal efficiency and long-term stability of the machine.

[0033] like Figure 3 and Figure 4 As shown, in one embodiment, the limiting folding plate is provided with a reinforcing rib 113 at the edge of the through opening 102, and the reinforcing rib 113 connects the limiting folding plate and the inner wall of the box 10.

[0034] In this embodiment, the reinforcing rib 113 connects the limiting folding plate to the inner wall of the housing 10, which helps to improve the structural stability of the limiting folding plate under stress. This design enhances the limiting folding plate's resistance to deformation and reduces stress concentration caused by assembly or use. At the same time, the presence of the reinforcing rib 113 also helps to improve the material distribution during stamping, thereby improving forming accuracy and consistency.

[0035] like Figure 3 and Figure 4 As shown, in one embodiment, the housing 10 is further provided with a snap-fit ​​member 15, which engages with the edge of the heat insulation member 30.

[0036] In this embodiment, the snap-fit ​​component 15 can be implemented using an elastic protrusion structure formed by stamping or bending from the edge of the housing 10 towards the combustion chamber 101. Its shape can be hook-shaped, L-shaped, U-shaped, or other structural forms adapted to the edge contour of the heat insulation component 30. The snap-fit ​​component 15 can form a limiting fit with the edge of the heat insulation component 30, assisting the limiting baffle in fixing the heat insulation component 30 at multiple points. Through the synergistic effect of the snap-fit ​​component 15 and the limiting baffle, the overall stability of the heat insulation component 30 installation is improved, reducing the risk of warping or partial detachment under high temperature or vibration environments. Simultaneously, this design eliminates the need for additional fasteners, simplifying the assembly process and reducing the number of parts.

[0037] like Figure 3 and Figure 4 As shown, in one embodiment, the housing 10 is provided with a protrusion 12 on the side facing the combustion chamber 101, and the protrusion 12 abuts against the heat insulation member 30 to create an airflow gap between the heat insulation member 30 and the housing 10.

[0038] In this embodiment, the design of the protrusion 12 helps ensure that the insulation component 30 maintains a certain distance from the housing 10 after installation, thereby forming an airflow gap. This not only facilitates air circulation and reduces the possibility of heat being directly conducted to the housing 10, but also reduces the risk of deformation or damage to the housing 10 due to high temperatures. Furthermore, by setting the protrusion 12 to maintain the airflow gap between the insulation component 30 and the housing 10, the insulation effect can be improved without adding additional complex structures, further enhancing the overall thermal efficiency of the equipment. This design also simplifies the manufacturing process and provides additional support for the insulation component 30, preventing displacement or collapse during use, thereby improving the safety and stability of equipment operation.

[0039] like Figure 4 and Figure 5 As shown, in one embodiment, the housing 10 includes a bottom frame 13 and a cover plate 14. The bottom frame 13 has an opening 103, and the cover plate 14 covers the opening 103 and encloses the bottom frame 13 to form a combustion chamber 101. The heat insulation member 30 includes a first heat insulation member 31 and a second heat insulation member 32. The first heat insulation member 31 covers at least a portion of the inner wall surface of the bottom frame 13, and the second heat insulation member 32 covers at least a portion of the inner wall surface of the cover plate 14. The limiting member 11 includes a first limiting member 1101 and a second limiting member 1102. The bottom frame 13 is provided with the first limiting member 1101 to limit and cooperate with the first heat insulation member 31, and the cover plate 14 is provided with the second limiting member 1102 to limit and cooperate with the second heat insulation member 32.

[0040] In this embodiment, by providing a first limiting member 1101 and a second limiting member 1102 on the bottom frame 13 and the cover plate 14 respectively to fix the corresponding first heat insulation member 31 and second heat insulation member 32, it can be ensured that the first heat insulation member 31 and the second heat insulation member 32 can be accurately and firmly installed on the bottom frame 13 and the cover plate 14 during assembly. In this way, not only can the flexibility and adaptability of the installation of the first heat insulation member 31 and the second heat insulation member 32 be improved, but effective heat insulation protection of the inner wall of the combustion chamber 101 can also be achieved without increasing complexity. In addition, dividing the heat insulation member 30 into two parts, the first heat insulation member 31 and the second heat insulation member 32, and fixing them separately, helps to simplify the manufacturing and assembly process, and also facilitates maintenance and replacement.

[0041] like Figure 4 and Figure 5As shown, in one embodiment, at least two first limiting members 1101 are provided, and at least two first limiting members 1101 are arranged in multiple rows at intervals along a first direction, and the multiple rows of first limiting members 1101 are staggered along a second direction; wherein, the first direction and the second direction are intersected.

[0042] In this embodiment, by arranging multiple first limiting members 1101 in multiple rows along the first direction and staggering them in the second direction, it helps to form a more evenly distributed fixing point on the inner wall of the bottom frame 13. This staggered arrangement can improve the overall constraint effect on the first heat insulation member 31 and reduce the possibility of local stress concentration or warping deformation. At the same time, the intersecting first and second directions make the layout of the limiting members 11 more spatially adaptable, and can better match the first heat insulation members 31 of different sizes or shapes. This structure enhances the stability and fit of the first heat insulation member 31 installation without adding extra parts, and also helps to improve the consistency and reliability of the overall heat insulation performance. In addition, this arrangement strategy also helps to optimize the positioning accuracy during the assembly process, ensuring that the first heat insulation member 31 can be accurately and firmly installed on the bottom frame 13, thereby further improving the thermal efficiency and long-term operational stability of the equipment. like Figure 4 and Figure 5 As shown, in one embodiment, at least two second limiting members 1102 are provided, and at least two second limiting members 1102 are arranged in multiple rows at intervals along the first direction, and the multiple rows of second limiting members 1102 are staggered along the second direction; wherein, the first direction and the second direction are intersected.

[0043] In this embodiment, by arranging multiple second limiting members 1102 in multiple rows along the first direction and staggering them in the second direction, it helps to form a more evenly distributed fixing point on the inner wall surface of the cover plate 14. This staggered arrangement can improve the overall constraint effect on the second heat insulation member 32 and reduce the possibility of local stress concentration or warping deformation. At the same time, the intersecting first and second directions make the layout of the limiting members 11 more spatially adaptable, which can better match the second heat insulation members 32 of different sizes or shapes. This structure enhances the stability and fit of the second heat insulation member 32 installation without adding extra parts, and also helps to improve the consistency and reliability of the overall heat insulation performance. In addition, this arrangement strategy also helps to optimize the positioning accuracy during the assembly process, ensuring that the second heat insulation member 32 can be accurately and firmly installed on the cover plate 14, thereby further improving the thermal efficiency and long-term operational stability of the equipment.

[0044] like Figure 4 and Figure 5As shown, in one embodiment, the housing 10 further includes a first mounting plate 16 and a second mounting plate 17 located on one side of the combustion chamber 101. The first mounting plate 16 extends from the bottom frame 13 in a direction away from the combustion chamber 101, and the second mounting plate 17 extends from the cover plate 14 in a direction away from the combustion chamber 101. The heat exchange assembly 20 is installed between the first mounting plate 16 and the second mounting plate 17. The first heat insulation member 31 at least partially covers the side of the first mounting plate 16 facing the heat exchange assembly 20, and the second heat insulation member 32 at least partially covers the side of the second mounting plate 17 facing the heat exchange assembly 20.

[0045] In this embodiment, by extending the first mounting plate 16 and the second mounting plate 17 from the bottom frame 13 and the cover plate 14 respectively in a direction away from the combustion chamber 101, and by providing the first heat insulation element 31 and the second heat insulation element 32 on the first mounting plate 16 and the second mounting plate 17 respectively, unnecessary heat loss from the combustion chamber 101 to the heat exchange assembly 20 can be effectively reduced. This design not only helps to improve heat exchange efficiency but also protects the heat exchange assembly 20 from high-temperature damage. Furthermore, the covering of the first mounting plate 16 and the second mounting plate 17 by the first heat insulation element 31 and the second heat insulation element 32 can provide effective heat insulation protection without adding additional complex structures, ensuring the safety and stability of equipment operation.

[0046] like Figure 4 and Figure 5 As shown, in one embodiment, the bottom frame 13 is provided with a first fixing groove 1301, and the first heat insulation member 31 includes two first heat insulation sections 311 that are bent and connected. One of the first heat insulation sections 311 is located in the first fixing groove 1301, and the other first heat insulation section 311 covers the first mounting plate 16. A first step is formed between the two second heat insulation sections 321.

[0047] In this embodiment, by designing the first heat insulation member 31 to include two bent and connected first heat insulation sections 311, and using the first fixing groove 1301 on the bottom frame 13 to fix one of the first heat insulation sections 311, it can be ensured that the first heat insulation member 31 is stably installed on the bottom frame 13 and the first mounting plate 16. This design not only helps to improve the heat insulation effect, but also prevents the first heat insulation member 31 from shifting or deforming during use. In addition, the first step formed between the two first heat insulation sections 311 can better adapt to the internal spatial layout of the housing 10, providing a tighter fit, thereby further enhancing the heat insulation performance. At the same time, this design can simplify the assembly process of the first heat insulation member 31, eliminating the need for additional fixing devices, which helps to reduce the number of parts and improve assembly efficiency.

[0048] like Figure 4 and Figure 5As shown, in one embodiment, the cover plate 14 is provided with a second fixing groove 1401, and the second heat insulation member 32 includes two second heat insulation sections 321 that are bent and connected. One of the second heat insulation sections 321 is provided in the second fixing groove 1401, and the other second heat insulation section 321 covers the second mounting plate 17. A second step is formed between the two second heat insulation sections 321.

[0049] In this embodiment, by designing the second heat insulation member 32 to include two bent and connected second heat insulation sections 321, and using the second fixing groove 1401 on the cover plate 14 to fix one of the second heat insulation sections 321, it can be ensured that the second heat insulation member 32 is stably installed on the cover plate 14 and the second mounting plate 17. This design not only helps to improve the heat insulation effect, but also prevents the second heat insulation member 32 from shifting or deforming during use. In addition, the second step formed between the two second heat insulation sections 321 can better adapt to the internal spatial layout of the housing 10, providing a tighter fit, thereby further enhancing the heat insulation performance. At the same time, this design can simplify the assembly process of the second heat insulation member 32, eliminating the need for additional fixing devices, which helps to reduce the number of parts and improve assembly efficiency.

[0050] This utility model also proposes a water heater 1000, such as Figure 1 As shown, the water heater 1000 includes a heat exchange device 100. The specific structure of the heat exchange device 100 is as described in the above embodiments. Since the water heater 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0051] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A heat exchange device, characterized in that, include: The housing includes a combustion chamber, and the inner wall of the housing is provided with a limiting component. A heat exchange assembly is located on one side of the combustion chamber; A heat insulation component is provided on the inner wall surface of the housing. The heat insulation component has a mounting groove. The limiting component passes through the mounting groove and abuts against the side of the heat insulation component away from the inner wall surface of the housing.

2. The heat exchange device as described in claim 1, characterized in that, The limiting member includes a first plate segment disposed on the inner wall of the box, and a second plate segment bent and connected to the first plate segment. The first plate segment passes through the mounting groove, and the second plate segment abuts against the side of the heat insulation member away from the inner wall of the box.

3. The heat exchange device as described in claim 2, characterized in that, The second plate segment is inclined from the first plate segment toward the heat insulation component.

4. The heat exchange device as described in claim 1, characterized in that, The limiting member is configured as a limiting folding plate stamped from the outer wall of the housing toward the combustion chamber, and a through opening is formed on the edge of the housing near the limiting folding plate.

5. The heat exchange device as described in claim 4, characterized in that, The limiting folding plate is provided with a reinforcing rib corresponding to the edge of the through opening, and the reinforcing rib connects the limiting folding plate and the inner wall of the box.

6. The heat exchange device as described in claim 1, characterized in that, The housing is also provided with a snap-fit ​​component, which engages with the edge of the heat insulation component. And / or, the housing has a protrusion on the side facing the combustion chamber, the protrusion abutting against the heat insulation member to create an airflow gap between the heat insulation member and the housing.

7. The heat exchange device according to any one of claims 1 to 6, characterized in that, The housing includes a bottom frame and a cover plate. The bottom frame has an opening, and the cover plate covers the opening and encloses the bottom frame to form the combustion chamber. The heat insulation includes a first heat insulation and a second heat insulation. The first heat insulation covers at least a portion of the inner wall surface of the bottom frame, and the second heat insulation covers at least a portion of the inner wall surface of the cover plate. The limiting member includes a first limiting member and a second limiting member. The bottom frame is provided with the first limiting member to limit and cooperate with the first heat insulation, and the cover plate is provided with the second limiting member to limit and cooperate with the second heat insulation.

8. The heat exchange device as described in claim 7, characterized in that, The first limiting member is provided in at least two, and the at least two first limiting members are arranged in multiple rows at intervals along the first direction, and the multiple rows of first limiting members are staggered along the second direction; And / or, at least two second limiting members are provided, and at least two second limiting members are arranged in multiple rows at intervals along the first direction, and the multiple rows of second limiting members are staggered along the second direction; The first direction and the second direction are intersecting.

9. The heat exchange device as described in claim 8, characterized in that, The housing also includes a first mounting plate and a second mounting plate located on one side of the combustion chamber. The first mounting plate extends from the bottom frame in a direction away from the combustion chamber, and the second mounting plate extends from the cover plate in a direction away from the combustion chamber. The heat exchange assembly is installed between the first mounting plate and the second mounting plate. The first heat insulation member at least partially covers the side of the first mounting plate facing the heat exchange assembly, and the second heat insulation member at least partially covers the side of the second mounting plate facing the heat exchange assembly.

10. A water heater, characterized in that, It includes the heat exchange device as described in any one of claims 1 to 9.

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