Heat exchange assembly and gas water heater

Abstract

This application provides a heat exchange component and a gas water heater. The heat exchange component includes a frame and an insulation structure. The frame has a combustion chamber. The insulation structure is installed inside the combustion chamber and includes insulation elements. At least one insulation element includes an outer insulation layer and an inner insulation layer. The outer insulation layer is connected to the inner wall of the frame. The inner insulation layer is closer to the center of the combustion chamber than the outer insulation layer, and an air insulation layer is formed between the inner and outer insulation layers. The thermal conductivity of the inner and outer insulation layers is different from that of the air insulation layer. This combination of different thermal conductivityes results in better insulation performance of the insulation structure.

Description

Technical Field

[0001] This application relates to the field of water heater technology, and more particularly to a heat exchange component and a gas water heater. Background Technology

[0002] A gas water heater is a device that uses gas as an energy source to heat water through combustion. A gas water heater typically includes a heat exchanger and a burner. When a user needs hot water, water flows through the water heater, triggering the gas supply and ignition system. The gas mixes with air and ignites on the burner, generating heat. This heat is transferred to the flowing cold water through the heat exchanger, rapidly heating the water. The heated hot water then flows out through the outlet for the user's use.

[0003] In related technologies, the frame is used to enclose the combustion chamber. During combustion, the frame accumulates a significant amount of heat, which is conducted to the heat exchanger due to the direct contact between the frame and the heat exchanger. Users may turn off the water heater mid-shower, leaving the frame still at a high temperature. When the water heater is turned back on, the residual heat from the frame continues to heat the water inside the heat exchanger, resulting in excessively high outlet water temperature. Utility Model Content

[0004] This application provides a heat exchange component and a gas water heater, which aims to improve the problem that when the water heater is turned on again, the residual heat of the frame continues to heat the water in the heat exchanger, resulting in excessively high outlet water temperature.

[0005] In a first aspect, embodiments of this application provide a heat exchange component, including: The frame has a combustion chamber; and, A heat insulation structure, installed within the combustion chamber, includes heat insulation components, at least one of which includes: An external thermal insulation layer is attached to the inner wall of the frame; and, The inner heat insulation layer is closer to the center of the combustion chamber than the outer heat insulation layer, and an air heat insulation layer is formed between the inner heat insulation layer and the outer heat insulation layer; The thermal conductivity of the inner insulation layer and the outer insulation layer is different from that of the air insulation layer.

[0006] In some embodiments, the thermal conductivity of both the inner and outer insulation layers is less than that of the air insulation layer.

[0007] In some embodiments, the thermal conductivity of both the inner and outer insulation layers is less than that of the frame.

[0008] In some embodiments, the thermal conductivity of the inner insulation layer may be the same as or different from that of the outer insulation layer.

[0009] In some embodiments, the inner insulation layer and the outer insulation layer are either an integral component or separate components.

[0010] In some embodiments, the materials of the inner and outer insulation layers include one of the following: aluminosilicate cotton, aluminosilicate board, ceramic fiber, glass fiber, silicate fiber, and silica fiber; and / or The frame is made of either galvanized steel or stainless steel.

[0011] In some embodiments, the thermal insulation structure is screwed, plugged in, snapped in, glued, or positioned in conjunction with the frame.

[0012] In some embodiments, the top and bottom ends of the inner insulation layer are fixedly connected to the frame; and / or, The top and bottom ends of the outer insulation layer are fixedly connected to the frame.

[0013] In some embodiments, the frame includes a left side shell, a front side shell, a right side shell, and a rear side shell connected in sequence. The left side shell and the right side shell are arranged opposite each other in the left-right direction, and the front side shell and the rear side shell are arranged opposite each other in the front-back direction. The left side shell, the right side shell, the front side shell, and the rear side shell enclose and define the combustion chamber. The heat insulation component includes a left heat insulation component, a right heat insulation component, a front heat insulation component, and a rear heat insulation component. The left heat insulation component is disposed on the inner wall of the left side shell, the right heat insulation component is disposed on the inner wall of the right side shell, the front heat insulation component is disposed on the inner wall of the front side shell, and the rear heat insulation component is disposed on the inner wall of the rear side shell.

[0014] In some embodiments, the left insulation member includes a left insulation body having the air insulation layer, and the left side shell includes: The left main body is connected to the front shell and the rear shell; A left flange, connected to the top of the left main body and angled with it, is bent toward the combustion chamber; and... A left limiting plate is connected to the inner wall of the left main body. The left limiting plate is used to support and limit the bottom of the left heat insulation body. The left main body, the left flange, and the left limiting plate define a left accommodating space, and the left heat insulation body is located within the left accommodating space.

[0015] In some embodiments, the left limiting plate includes: A support portion, connected to the inner wall of the left main body, is used to support the bottom of the left heat insulation body; and A limiting part is connected to the side of the support part facing the combustion chamber. The limiting part is set at an angle to the support part. The limiting part is used to cooperate with the left main body to clamp the bottom of the left heat insulation body.

[0016] In some embodiments, the left side shell further includes a left protrusion disposed on the inner wall of the left main body and protruding into the combustion chamber, the end face of the left protrusion abutting against the left heat insulation body, so that a gap exists between the left main body and the left heat insulation body; or... The inner wall of the left main body is attached to the left heat insulation body so that the left main body and the left heat insulation body fit together without gap.

[0017] In some embodiments, the left mainboard has heat dissipation holes.

[0018] Secondly, a gas water heater according to an embodiment of this application includes: The heat exchange assembly as described in any of the above embodiments; and A burner, located inside the combustion chamber, is used to burn fuel gas and heat the heat exchanger.

[0019] In some embodiments, the bottom of the heat insulation element is lower than the burner.

[0020] In this embodiment, the inner insulation layer serves as the first line of defense, directly facing the high-temperature flue gas inside the combustion chamber. This helps to block some of the heat from being directly transferred to the frame, thus protecting the frame from direct heat radiation. The outer insulation layer is connected to the inner wall of the frame, and it works in conjunction with the inner insulation layer to enhance the insulation effect.

[0021] Furthermore, an air insulation layer is constructed between the inner and outer insulation layers. Air can circulate within the air insulation layer, and the flowing air can carry away some of the heat. Air can act as an insulation medium, and because air has a low insulation efficiency, it can effectively slow down the transfer of heat from the inner insulation layer to the outer insulation layer.

[0022] The thermal conductivity of the inner and outer insulation layers differs from that of the air insulation layer. The inner and outer insulation layers can be made of materials with low thermal conductivity, effectively blocking heat transfer. Furthermore, the low thermal conductivity of the air within the air insulation layer further slows down heat transfer. This combination of different thermal conductivity results in a more effective insulation structure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a heat exchange component provided in one embodiment of this application; Figure 2 This is an exploded view of a heat exchange component provided in an embodiment of this application; Figure 3 A schematic diagram of the structure of a heat exchange component provided in an embodiment of this application (the exhaust hood is omitted). Figure 4 An exploded view of a heat exchange component provided in an embodiment of this application (the exhaust hood is omitted). Figure 5 Another exploded view of a heat exchange component provided in an embodiment of this application (the exhaust hood is omitted). Figure 6 Another exploded view of the left heat insulation element and heat exchanger provided in an embodiment of this application; Figure 7 Another exploded view of the left thermal insulation member and part of the frame provided in an embodiment of this application; Figure 8 A schematic diagram of the structure of the left side shell, right side shell, and front side shell provided in an embodiment of this application; Figure 9 This is a schematic diagram of the front shell provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures: Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] This application provides a gas water heater, a common household appliance whose main function is to heat water by burning gas to provide hot water for the family. The gas water heater includes a burner and a heat exchange assembly 1000. The burner burns gas and heats the heat exchange assembly 1000. The burner ignites the gas using an ignition device to produce a flame. It adjusts the gas supply according to the user's desired hot water temperature, thereby controlling the combustion intensity. The heat generated by the burner is rapidly transferred to the water through the heat exchange assembly 1000, causing the cold water to heat up quickly. The heat exchange assembly 1000 isolates the water to be heated from the flame during combustion, ensuring safety during use.

[0028] like Figure 1 As shown, the heat exchange assembly 1000 includes a heat exchanger 100 located above the burner. The burner is used to burn fuel gas, generating high-temperature flue gas that heats the heat exchanger 100. The bottom of the heat exchanger 100 can absorb the heat generated by the burner and then transfer this heat to the water flowing through it, raising the water temperature.

[0029] Understandably, a portion of the frame 200 can be arranged around the circumference of the heat exchanger 100, forming an annular gap 200b between the frame 200 and the heat exchanger 100. This helps to isolate the combustion chamber 200a from the heat exchanger 100, preventing the heat accumulated in the frame 200 during combustion from being directly conducted to the heat exchanger 100, thus reducing direct heat conduction and minimizing the impact of the high temperature of the frame 200 on the water temperature inside the heat exchanger 100.

[0030] As shown in Figure 2, the heat exchanger 100 also includes two end plates 110. The two end plates 110 are a left end plate 111 and a right end plate 112, which are arranged at intervals of AA in the left-right direction. The left end plate 111 and the right end plate 112 are respectively arranged at both ends of a plurality of heat exchange fins 120, and the plurality of heat exchange fins 120 are sandwiched between the left end plate 111 and the right end plate 112. Fixing holes are also provided on the left end plate 111 and the right end plate 112, and the aforementioned heat exchange water pipe 130 is inserted through the fixing holes to fix the heat exchange water pipe 130, so that the heat exchange water pipe 130 remains stable under high temperature and pressure changes, and prevents it from shifting or vibrating.

[0031] Please continue reading. Figure 2In one embodiment, the heat exchanger 100 includes multiple heat exchange fins 120 and hot water pipes 130. The hot water pipes 130 pass through the multiple heat exchange fins 120, which are spaced apart in the left-right direction AA. The heat exchange fins 120 increase the surface area of ​​the heat exchanger 100, improving the contact area with high-temperature flue gas and thus enhancing the efficiency of heat exchange, facilitating the transfer of heat from the flue gas to the hot water pipes 130. Water flows inside the hot water pipes 130, which are responsible for transferring the heat generated by the burner to the water flowing inside. The water in the hot water pipes 130 absorbs heat from the pipe walls, increasing its temperature to provide hot water. Understandably, the hot water pipes 130 are S-shaped and bend through the multiple heat exchange fins 120 in the front-back direction BB. Within a limited space, the S-shaped bend design allows for more efficient use of space, increases the flow path of the water, and provides more contact time between the water and the high-temperature flue gas, thereby improving the utilization rate of thermal energy.

[0032] like Figure 6 As shown, the heat exchanger pipe 130 includes a straight pipe section 131 and a curved pipe section 132. The straight pipe section 131 has multiple segments, which pass through multiple heat exchange fins 120 in a left-right direction AA. This allows the water in the straight pipe section 131 to exchange heat with the heat exchange fins 120, increasing the contact area between the water and the fins. The curved pipe section 132 connects to two adjacent straight pipe sections 131 at both ends and is connected to the left end plate 111 and the right end plate 112, enhancing the overall structural stability of the heat exchanger pipe 130. This ensures it can be firmly mounted above the burner, guaranteeing heat exchange between the straight pipe section 131 and the high-temperature flue gas. Understandably, the heat exchanger 100 also includes an inlet pipe section 140 and an outlet pipe section 150. The inlet pipe section 140 connects to the first segment of the multiple straight pipe sections 131, and the outlet pipe section 150 connects to the last segment of the multiple straight pipe sections 131.

[0033] like Figure 1 and Figure 4 As shown, the heat exchange assembly 1000 includes a frame 200 and an insulation structure 300. The frame 200 has a combustion chamber 200a, within which the burner is disposed. The frame 200 provides a stable combustion environment for the burner and isolates the combustion zone to a certain extent, protecting other components from high temperatures. The insulation structure 300 is installed within the combustion chamber 200a, with at least a portion disposed between the frame 200 and the heat exchanger 100. The insulation structure 300 effectively blocks heat transfer from the frame 200 to the heat exchanger 100, forming a thermal barrier. Even if the user turns off the water heater and then turns it back on, the residual heat in the frame 200 prevents the water in the heat exchanger 100 from heating too quickly, thus avoiding the risk of excessively high outlet water temperature.

[0034] For example, the material of the frame 200 includes either galvanized sheet or stainless steel. Both galvanized sheet and stainless steel have good corrosion resistance and high temperature resistance, and can maintain their performance even in environments where the burner produces high-temperature flue gas, thereby extending the service life of the heat exchange component 1000.

[0035] In one embodiment, the thermal insulation structure 300 is screwed, plugged, snapped, glued, or limited to the frame 200. This stable connection helps prevent potential safety hazards caused by displacement or detachment of the thermal insulation structure 300, thus improving the safety of use.

[0036] like Figure 3 and Figure 4 As shown, the heat insulation structure 300 includes a heat insulation element 310. The heat insulation element 310 helps to isolate the combustion chamber 200a from the heat exchanger 100, so that the heat accumulated in the frame 200 during the combustion process will not be directly conducted to the heat exchanger 100, reducing direct heat conduction and reducing the impact of the high temperature of the frame 200 on the water temperature inside the heat exchanger 100.

[0037] Please continue reading. Figure 4 Specifically, at least one heat insulation element 310 includes an outer heat insulation layer 311a and an inner heat insulation layer 311b. The inner heat insulation layer 311b is closer to the center of the combustion chamber 200a than the outer heat insulation layer 311a. As the first line of defense, the inner heat insulation layer 311b directly faces the high-temperature flue gas inside the combustion chamber 200a, which helps to block some of the heat from being directly transferred to the frame 200, thereby protecting the frame 200 from direct heat radiation. The outer heat insulation layer 311a is connected to the inner wall of the frame 200. The outer heat insulation layer 311a can work in conjunction with the inner heat insulation layer 311b to enhance the heat insulation effect.

[0038] Furthermore, an air insulation layer 300a is formed between the inner insulation layer 311b and the outer insulation layer 311a. Air can circulate within the air insulation layer 300a, and the flowing air can carry away some of the heat. Air can act as an insulation medium, and because air has a low insulation efficiency, it can effectively slow down the transfer of heat from the inner insulation layer 311b to the outer insulation layer 311a.

[0039] Please continue reading. Figure 4 The inner insulation layer 311b and the outer insulation layer 311a have different thermal conductivity than the air insulation layer 300a. The inner insulation layer 311b and the outer insulation layer 311a can be made of materials with low thermal conductivity, which can effectively block heat transfer. Since the air in the air insulation layer 300a has low thermal conductivity, it can further slow down heat transfer. This combination of different thermal conductivity makes the insulation structure 300 have a better insulation effect.

[0040] Since high temperatures accelerate material aging, by setting the thermal conductivity of the inner insulation layer 311b and the outer insulation layer 311a to be different from that of the air insulation layer 300a, the temperature fluctuation of the frame 200 during the combustion process of the burner can be reduced, so that the frame 200 maintains a relatively stable temperature, reducing material fatigue caused by temperature fluctuations, reducing the impact of thermal expansion, thereby extending the service life of the frame 200 and reducing the frequency of maintenance and replacement.

[0041] In one embodiment, the inner insulation layer 311b and the outer insulation layer 311a can be either elastic or inelastic insulation layers. When inelastic, they have a fixed shape and size, providing higher structural stability and consistency, ensuring stable insulation performance under different temperatures and operating conditions. When elastic, the thickness can be uniform or inconsistent. When compressed by the frame 200, the elastic insulation layer can undergo elastic deformation, achieving a tighter fit to the heat exchanger 100. Furthermore, when subjected to thermal expansion, the elastic insulation layer can provide a buffering effect, reducing potential damage to the heat exchanger 100.

[0042] In one embodiment, the thermal conductivity of both the inner insulation layer 311b and the outer insulation layer 311a is lower than that of the air insulation layer 300a. Since heat transfer mainly occurs through thermal conduction, the low thermal conductivity of the inner insulation layer 311b and the outer insulation layer 311a effectively slows down the rate of heat transfer. The lower thermal conductivity of the inner insulation layer 311b and the outer insulation layer 311a also more effectively prevents heat from being transferred from the combustion chamber to the enclosure 200, thereby reducing the temperature of the enclosure 200 and decreasing the temperature transfer from the enclosure 200 to the heat exchanger 100, thus preventing excessively high outlet water temperatures when the gas water heater is restarted after being shut down. Furthermore, because the inner insulation layer 311b absorbs less heat, more heat is used to heat the water instead of being transferred to the enclosure 200, thereby improving the thermal efficiency of the gas water heater.

[0043] In one embodiment, the thermal conductivity of both the inner insulation layer 311b and the outer insulation layer 311a is lower than that of the frame 200, making it more difficult for heat to transfer from the inner insulation layer 311b and the outer insulation layer 311a to the frame 200, thereby improving the thermal insulation effect of the insulation component 310. This keeps the frame 200 within a stable temperature range, reduces aging or deformation caused by high temperatures, maintains the overall shape of the frame 200, and improves the structural stability of the frame 200.

[0044] In one configuration, the thermal conductivity of the inner insulation layer 311b is the same as that of the outer insulation layer 311a. This simplifies the material selection for both the inner and outer insulation layers 311b and 311a, allowing the same material to be used to manufacture both layers. This makes the manufacturing process more standardized, contributing to uniform insulation of the insulation component 310 and ensuring the consistency and predictability of heat transfer.

[0045] In another configuration, the thermal conductivity of the inner insulation layer 311b differs from that of the outer insulation layer 311a. For example, the inner insulation layer 311b may be made of a material with lower thermal conductivity to ensure that the area near the combustion chamber 200a absorbs less heat, thereby providing a stronger insulation effect. The outer insulation layer 311a may be made of a material with higher thermal conductivity than the inner insulation layer 311b but lower cost, in order to reduce the overall cost of the insulation component 310.

[0046] In one configuration, the inner insulation layer 311b and the outer insulation layer 311a are integrated components. This integrated component reduces assembly steps, eliminating the need to assemble the inner insulation layer 311b and the outer insulation layer 311a separately, thus reducing manufacturing costs and time. Furthermore, the integrated structure of the inner insulation layer 311b and the outer insulation layer 311a makes the insulation component 310 more structurally stable, reducing the risk of decreased insulation performance due to improper connection between the inner insulation layer 311b and the outer insulation layer 311a.

[0047] In another configuration, the inner insulation layer 311b and the outer insulation layer 311a are separate components. This separate configuration allows for the replacement of either the inner insulation layer 311b or the outer insulation layer 311a without replacing the entire insulation component 310, improving maintenance flexibility. Furthermore, the separate inner insulation layer 311b and the outer insulation layer 311a can be customized for specific heat transfer characteristics; that is, the inner insulation layer 311b and the outer insulation layer 311a can be designed independently to adapt to different heat loads.

[0048] In one embodiment, the materials of the inner heat insulation layer 311b and the outer heat insulation layer 311a include one of aluminum silicate cotton, aluminum silicate board, ceramic fiber, glass fiber, silicate fiber and silicon dioxide fiber. The materials of the inner heat insulation layer 311b and the outer heat insulation layer 311a have better heat insulation performance, which can effectively block the heat transfer in the combustion chamber 200a, help reduce the heat transfer to the frame 200, and protect the frame 200 from high temperature.

[0049] In one embodiment, the top and bottom ends of the inner insulation layer 311b are fixedly connected to the frame 200. This fixed connection helps ensure that the outer insulation layer 311a remains in the proper position under high-temperature conditions, reducing the failure of the inner insulation layer 311b due to displacement. It also helps maintain the stability of the inner insulation layer 311b under temperature changes, reducing deformation caused by temperature variations.

[0050] In one embodiment, the top and bottom ends of the outer insulation layer 311a are fixedly connected to the frame 200. The fixed connection provides additional support, enhances the structural stability between the outer insulation layer 311a and the frame 200, and reduces displacement caused by thermal expansion or mechanical vibration.

[0051] like Figure 5 As shown, in one embodiment, the frame 200 includes a left side shell 210, a front side shell 230, a right side shell 220, and a rear side shell 240 connected in sequence. The left side shell 210 and the right side shell 220 are arranged opposite each other in the left-right direction, and the front side shell 230 and the rear side shell 240 are arranged opposite each other in the front-back direction. The surface areas of the left side shell 210 and the right side shell 220 are smaller than the surface areas of the front side shell 230 and the rear side shell 240. The split shell design makes the assembly, maintenance, and repair of the gas water heater more convenient. The left side shell 210, the right side shell 220, the front side shell 230, and the rear side shell 240 enclose and define the combustion chamber 200a, which helps the burner concentrate the heat generated by combustion inside the combustion chamber 200a, reducing heat loss and thus improving thermal efficiency and energy utilization.

[0052] Please continue reading. Figure 5 Furthermore, the heat insulation component 310 includes a left heat insulation component 311, a right heat insulation component 312, a front heat insulation component 313, and a rear heat insulation component 314. Understandably, the left heat insulation component 311, the right heat insulation component 312, the front heat insulation component 313, and the rear heat insulation component 314 all include an outer heat insulation layer (311a, 312a, 313a, 314a) and an inner heat insulation layer (311b, 312b, 313b, 314b). The left heat insulation component 311 is disposed on the inner wall of the left side shell 210, and the right heat insulation component 312 is disposed on the inner wall of the right side shell 220, to prevent the left side shell 210 and the right side shell 220 from directly contacting the heat exchanger 100 and reduce the transfer of heat to the heat exchanger 100 through the left side shell 210 and the right side shell 220. The front heat insulation element 313 is disposed on the inner wall of the front shell 230, and the rear heat insulation element 314 is disposed on the inner wall of the rear shell 240. The front heat insulation element 313 and the rear heat insulation element 314 are also in contact with the heat exchanger 100, limiting the heat of the front shell 230 and the rear shell 240 to be indirectly transferred to the hot water pipe 130.

[0053] like Figure 6 and Figure 7As shown, in one embodiment, the left heat insulation member 311 includes a left heat insulation body 3111 with an air heat insulation layer 300a, and the left side shell 210 includes a left main body 211, a left flange 212, and a left limiting plate 214. The left main body 211 is connected to the front shell and the rear shell 240. The left flange 212 is connected to the top of the left main body 211 and is set at an angle to the left main body 211. The left flange 212 is bent toward the combustion chamber 200a. The left limiting plate 214 is connected to the inner wall of the left main body 211 and is used to support and limit the bottom of the left heat insulation body 3111. The left main body 211, the left flange 212, and the left limiting plate 214 define a left accommodating space, and the left heat insulation body 3111 is limited within the left accommodating space. By restricting the movement of the left insulation body 3111, displacement of the left insulation component 311 during use can be prevented, avoiding a decrease in insulation performance due to displacement. Furthermore, the presence of the left accommodating space simplifies the assembly process, clearly defining the position of the left insulation component 311 and reducing uncertainties during assembly.

[0054] Understandably, the left main body 211 and the left flange 212 are an integral structure. The left flange 212 can be bent to the left main body 211 by stamping. The integral structure can reduce the connection points between the left main body 211 and the left flange 212, making the overall structure of the left side shell 210 more robust and stable, and reducing deformation problems caused by thermal expansion.

[0055] Please continue reading. Figure 7 Furthermore, to facilitate bending of the left flange 212, a bending hole 212a is provided on the left flange 212. The bending hole 212a is located at the connection between the left flange 212 and the left main body 211. The bending hole 212a extends in the front-back direction, and / or, multiple bending holes 212a are provided in the front-back direction, arranged at intervals. On the one hand, the design of the bending hole 212a makes the left flange 212 easier to bend and also allows the left flange 212 to maintain its bending effect after bending; on the other hand, the bending hole 212a allows the left flange 212 to reduce the amount of material used while maintaining its structural strength, thus reducing the overall weight of the left side shell 210.

[0056] The left main body 211 has a support ear 211b, which is provided with a first insertion hole. The front shell 230 and the rear shell 240 are both provided with second insertion holes. The heat exchange assembly 1000 also includes a second connector 600, which is inserted into the first insertion hole and the second insertion hole, so that the front shell 230 and the rear shell 240 are respectively fixedly connected to the left shell 210, thereby enhancing the stability of the overall structure of the frame 200 and enabling it to better withstand internal pressure and external impact.

[0057] In one embodiment, the left limiting plate 214 includes a support portion 214a and a limiting portion 214b. The support portion 214a is connected to the inner wall of the left main plate 211 and extends toward the combustion chamber 200a. The support portion 214a supports the bottom of the left heat insulation body 3111, providing a stable support point for the left heat insulation component 311. The limiting portion 214b is connected to the side of the support portion 214a facing the combustion chamber 200a. The limiting portion 214b is set at an angle to the support portion 214a. The limiting portion 214b cooperates with the left main plate 211 to clamp the bottom of the left heat insulation body 3111, restricting the displacement of the left heat insulation component 311 in the left-right direction. This reduces the possibility of the left heat insulation component 311 moving due to accidental impact or temperature changes, thereby reducing the need for maintenance.

[0058] In one configuration, the left side shell 210 also includes a left protrusion 215. The left protrusion 215 is disposed on the inner wall of the left main body 211 and protrudes into the combustion chamber 200a. The end face of the left protrusion 215 abuts against the left heat insulation body 3111, so that there is a gap between the left main body 211 and the left heat insulation body 3111, reducing the direct contact between the left main body 211 and the left heat insulation body 3111, and forming a certain air layer between the left main body 211 and the left heat insulation body 3111. The air layer can act as an additional heat insulation medium, thereby reducing the rate at which heat is transferred from the combustion chamber 200a to the left main body 211. When the user turns off and on the gas water heater again, the heat transfer from the left side shell 210 to the hot water exchange pipe 130 is reduced, which helps to maintain the stability of the water temperature in the hot water exchange pipe 130 and avoids the initial outlet water temperature being too high.

[0059] Understandably, multiple left protrusions 215 are provided, and the multiple left protrusions 215 are evenly spaced along the vertical direction CC and the front-back direction, which helps to distribute and transfer heat more evenly, so that the left motherboard body 211 can achieve a more consistent heat dissipation effect.

[0060] Furthermore, the left protrusion 215 has a vent 215a, which can effectively disperse and release the heat on the left protrusion 215, reduce the overall temperature of the left side shell 210, reduce heat transfer to the left end plate 111, and reduce deformation or damage caused by thermal expansion, thus extending the service life of the left side shell 210.

[0061] In another configuration, the inner wall of the left main plate 211 is attached to the left heat insulation body 3111, allowing for a gapless fit between them. This tight fit helps to form a more stable connection, ensuring relative stability of the left main plate 211 and the left heat insulation body 3111 under high temperature and mechanical vibration. Furthermore, the gapless fit optimizes the use of space between the left main plate 211 and the left heat insulation body 3111, reducing the overall volume of the heat exchange assembly 1000 and improving space utilization.

[0062] In one embodiment, the left main body 211 has heat dissipation holes 211a. The heat dissipation holes 211a can effectively disperse and release the heat on the left main body 211. The heat dissipated through the heat dissipation holes 211a can reduce the thermal stress caused by heat accumulation on the left main body 211, thereby improving the stability of the left side shell 210.

[0063] Specifically, the heat dissipation hole 211a may include a first heat dissipation through hole and a second heat dissipation through hole, which are arranged in the vertical direction CC. The first heat dissipation through hole and the second heat dissipation through hole are spaced apart on both sides of the left protrusion 215, which helps to dissipate heat evenly, prevents local overheating of the left protrusion 215, and ensures that the left side shell 210 maintains a stable temperature.

[0064] like Figure 6 and Figure 7 As shown, in order to connect the left side shell 210 with the left heat insulation component 311 and the left end plate 111, the left heat insulation component 311 includes a left heat insulation body 3111 and a left heat insulation part 3112. The surface area of ​​the left heat insulation body 3111 in contact with the left side shell 210 is larger than the surface area of ​​the left heat insulation part 3112 in contact with the left side shell 210. The left heat insulation part 3112 is sandwiched between the left side shell 210 and the left end plate 111. Due to the presence of the left heat insulation part 3112, the residual heat on the left side shell 210 can be reduced to further heat the water in the heat exchanger 100, thereby preventing the water temperature from being too high when the user restarts the gas water heater.

[0065] The left heat insulation part 3112 is disposed on a portion of the top surface of the left heat insulation body 3111 to form a left step structure 3113 with the left heat insulation body 3111. The left side shell 210 also abuts against the step surface of the left step structure 3113, which enhances the stability of the left heat insulation part 311 and ensures the correct position of the left heat insulation part 3112 when it abuts against the left end plate 111, thereby maintaining the best heat insulation effect.

[0066] The left side shell 210 also includes a connecting ear 213, which is connected to the end of the left flange 212 near the combustion chamber 200a and is set at an angle to the left flange 212. The connecting ear 213 extends in the vertical direction CC and can fit onto the left heat insulation part 3112. The left heat insulation part 3112 fits onto the end face of the left end plate 111, which helps to align the multiple structures. The connecting ear 213 has a first through hole 213a, the left heat insulation part 3112 has a second through hole 3112a, and the left end plate 111 has a third through hole 111a. The heat exchange assembly 1000 also includes a first connector 400, which passes through the first through hole 213a, the second through hole 3112a, and the third through hole 111a to fix the connecting ear 213, the left heat insulation part 311, and the left end plate 111 together, ensuring the stability of the connection between the connecting ear 213, the left heat insulation part 311, and the left end plate 111, and making the left heat insulation part 311 firmly clamped between the connecting ear 213 and the left end plate 111, which helps to maintain the heat insulation effect of the left heat insulation part 311.

[0067] Continue reading Figure 7 In one embodiment, the left insulation section 3112 is further provided with multiple clearance grooves 3112b. The hot water exchange pipe 130 passes through the clearance grooves 3112b. Specifically, the section connecting the straight pipe section 131 and the curved pipe section 132 passes through the clearance groove 3112b. When the temperature changes, the hot water exchange pipe 130 may undergo thermal expansion. The design of the clearance grooves 3112b can provide a certain expansion space for the hot water exchange pipe 130, avoid stress concentration caused by thermal expansion, reduce the deformation of the left insulation component 311, and ensure that the left insulation component 311 maintains its designed performance over a long period of time.

[0068] like Figure 1 and Figure 2 As shown, in one embodiment, the heat exchange assembly 1000 further includes a smoke hood 500, which is disposed above the heat exchanger 100. The function of the smoke hood 500 is to collect and guide the exhaust gas generated by combustion, and to guide the flue gas and hot gas to flow upward, thereby improving the exhaust efficiency and ensuring that the exhaust gas can be discharged safely and effectively.

[0069] Please continue reading. Figure 2Furthermore, the fume hood 500 includes a left lug 510, which is located on the side of the connecting lug 213 opposite to the left heat insulation part 3112. The left lug 510 has a fourth through hole 510a, in which the first connector 400 passes through the fourth through hole 510a to fix the connecting lug 213, the left heat insulation part 311 and the left lug 510 together, so that the fume hood 500 can be stably installed above the heat exchanger 100. The first connector 400 passing through the fourth through hole 510a provides a unified fixing method for the connecting lug 213, the left heat insulation part 311 and the left lug 510, which simplifies the assembly process and facilitates subsequent maintenance and replacement.

[0070] Understandably, the smoke hood 500 also includes a right lug 0, the structure of which is the same as that of the left lug 510, and will not be described again here.

[0071] In one embodiment, the first connector 400 is an insulating screw. Due to the properties of its material, the insulating screw can minimize heat conduction through it, thereby reducing the risk of excessively high initial outlet water temperature when the gas water heater is turned on again after being turned off due to heat transfer through the first connector 400. Furthermore, the insulating screw's high-temperature resistance and heat insulation properties extend its own service life as well as the service life of the connected structure. Additionally, the insulating screw has a low coefficient of thermal expansion, meaning that its dimensional changes are minimal under temperature variations, reducing structural deformation caused by thermal expansion.

[0072] Understandably, the design of the right shell 220 is the same as or similar to that of the left shell 210 described above, and will not be repeated here.

[0073] like Figure 8 and Figure 9 As shown, in one embodiment, the front shell 230 includes a front main body 231 and a bent structure 232 disposed at the top of the front main body 231. The front shell 230 includes an upper limit structure 233 and a lower limit structure 234, which are arranged CC-spaced in the vertical direction. The upper limit structure 233 is connected to the bent structure 232, and the lower limit structure 234 is connected to the inner wall of the front main body 231. The lower limit structure 234 is used to support and limit the bottom of the front heat insulation member 313. The upper limit structure 233, the lower limit structure 234 and the front main body 231 define a front accommodating space. The front heat insulation member 313 is confined within the front accommodating space to ensure that the front heat insulation member 313 maintains the correct position during installation and use.

[0074] Understandably, multiple upper limit structures 233 and multiple lower limit structures 234 are provided. Multiple upper limit structures 233 are arranged at intervals along the left and right directions of the bending structure 232, and multiple lower limit structures 234 are arranged at intervals along the left and right directions of the front main body 231. This reduces the load on a single upper limit structure 233 and a single lower limit structure 234, improves the overall load-bearing capacity of the front shell 230, enhances the stability of the front heat insulation component 313, and reduces the displacement of the front heat insulation component 313 caused by thermal shock or external vibration.

[0075] like Figure 9 As shown, in one embodiment, the bending structure 232 includes a bending portion 232a and a connecting portion 232b. The bending portion 232a is connected to the front main body 231 and extends toward the combustion chamber 200a. The connecting portion 232b is connected to the end of the bending portion 232a away from the front main body 231. The upper limit structure 233 is connected to the free end of the connecting portion 232b. The connecting portion 232b is set at an angle to the bending portion, and there is a rounded transition between the bending portion 232a and the connecting portion 232b, which reduces stress concentration at the junction of the bending portion 232a and the connecting portion 232b. The rounded transition, as a smooth connection, can avoid wear caused by sharp corners to the front heat insulation component 313.

[0076] Please continue reading. Figure 9 The front side shell 230 also includes a front protrusion 235, which is disposed on the inner wall of the front main body 231 and protrudes into the combustion chamber 200a. The end face of the front protrusion 235 abuts against the front heat insulation member 313, so that there is a gap between the front main body 231 and the front heat insulation member 313, which helps to reduce the direct heat transfer between the front heat insulation member 313 and the front main body, and the gap helps the air to circulate and reduce the heat of the front side shell 230.

[0077] The end face of the connecting part 232b facing the combustion chamber 200a is flush with the end face of the front protrusion 235 facing the combustion chamber 200a, so that the side of the front heat insulation member 313 facing the connecting part 232b is closely connected to the connecting part 232b, reducing the loosening of the front heat insulation member 313 caused by the gap between the front heat insulation member 313 and the connecting part 232b due to the setting of the front protrusion 235.

[0078] Understandably, the rear shell 240 is the same as or similar in design to the aforementioned front shell 230, and will not be described in detail here.

[0079] In one embodiment, the bottom end of the heat insulation member 310 is lower than the burner. By ensuring that the bottom end of the heat insulation member 310 is lower than the burner, high-temperature flue gas can be effectively prevented from entering the air insulation layer 300a of the heat insulation member 310 from the burner, thereby avoiding damage to the frame 200 caused by the high-temperature flue gas. Since the flue gas will not enter the air insulation layer 300a, heat loss is reduced, which helps to maintain the high temperature of the burner, while reducing the thermal impact of high-temperature flue gas on the heat exchanger 100.

[0080] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating 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 application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0083] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0084] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heat exchange component, characterized in that, include: The frame includes a combustion chamber; as well as, A heat insulation structure, installed within the combustion chamber, includes heat insulation components, at least one of which includes: An external thermal insulation layer is attached to the inner wall of the frame; and, The inner heat insulation layer is closer to the center of the combustion chamber than the outer heat insulation layer, and an air heat insulation layer is formed between the inner heat insulation layer and the outer heat insulation layer; The thermal conductivity of the inner insulation layer and the outer insulation layer is different from that of the air insulation layer.

2. The heat exchange assembly according to claim 1, characterized in that, The thermal conductivity of both the inner and outer insulation layers is less than that of the air insulation layer.

3. The heat exchange assembly according to claim 1, characterized in that, The thermal conductivity of both the inner and outer insulation layers is less than that of the frame.

4. The heat exchange assembly according to claim 1, characterized in that, The thermal conductivity of the inner insulation layer may be the same as or different from that of the outer insulation layer.

5. The heat exchange assembly according to claim 1, characterized in that, The inner insulation layer and the outer insulation layer are either an integral component or separate components.

6. The heat exchange assembly according to claim 1, characterized in that, The materials of the inner and outer insulation layers include one of the following: aluminum silicate cotton, aluminum silicate board, ceramic fiber, glass fiber, silicate fiber, and silica fiber; and / or The frame is made of either galvanized steel or stainless steel.

7. The heat exchange assembly according to claim 1, characterized in that, The thermal insulation structure is screwed, plugged, snapped, glued, or limited to the frame.

8. The heat exchange assembly according to claim 1, characterized in that, The top and bottom ends of the inner insulation layer are fixedly connected to the surrounding frame; and / or The top and bottom ends of the outer insulation layer are fixedly connected to the frame.

9. The heat exchange assembly according to claim 1, characterized in that, The frame includes a left side shell, a front side shell, a right side shell, and a rear side shell connected in sequence. The left side shell and the right side shell are arranged opposite each other in the left-right direction, and the front side shell and the rear side shell are arranged opposite each other in the front-back direction. The left side shell, the right side shell, the front side shell, and the rear side shell enclose and define the combustion chamber. The heat insulation component includes a left heat insulation component, a right heat insulation component, a front heat insulation component, and a rear heat insulation component. The left heat insulation component is disposed on the inner wall of the left side shell, the right heat insulation component is disposed on the inner wall of the right side shell, the front heat insulation component is disposed on the inner wall of the front side shell, and the rear heat insulation component is disposed on the inner wall of the rear side shell.

10. The heat exchange assembly according to claim 9, characterized in that, The left insulation component includes a left insulation body having the air insulation layer, and the left side shell includes: The left main body is connected to the front shell and the rear shell; A left flange, connected to the top of the left main body and angled with it, is bent toward the combustion chamber; and... A left limiting plate is connected to the inner wall of the left main body. The left limiting plate is used to support and limit the bottom of the left heat insulation body. The left main body, the left flange, and the left limiting plate define a left accommodating space, and the left heat insulation body is located within the left accommodating space.

11. The heat exchange assembly according to claim 10, characterized in that, The left limiting plate includes: A support portion, connected to the inner wall of the left main body, is used to support the bottom of the left heat insulation body; and A limiting part is connected to the side of the support part facing the combustion chamber. The limiting part is set at an angle to the support part. The limiting part is used to cooperate with the left main body to clamp the bottom of the left heat insulation body.

12. The heat exchange assembly according to claim 10, characterized in that, The left side shell also includes a left protrusion, which is disposed on the inner wall of the left main body and protrudes into the combustion chamber. The end face of the left protrusion abuts against the left heat insulation body, so that there is a gap between the left main body and the left heat insulation body; or... The inner wall of the left main body is attached to the left heat insulation body so that the left main body and the left heat insulation body fit together without gap.

13. The heat exchange assembly according to claim 12, characterized in that, The left main board has heat dissipation holes.

14. A gas water heater, characterized in that, include: The heat exchange assembly as described in any one of claims 1-13; as well as A burner, located inside the combustion chamber, is used to burn fuel gas and heat the heat exchanger.

15. The gas water heater according to claim 14, characterized in that, The bottom of the heat insulation element is lower than the burner.

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