Heat exchange assembly and gas water heater

Abstract

The application provides a heat exchange assembly and a gas water heater. The heat exchange assembly comprises a heat exchanger, a surrounding frame and a heat insulation structure. The surrounding frame has a combustion chamber. Part of the surrounding frame is arranged around the outer periphery of the heat exchanger to form an annular gap around the outer periphery of the heat exchanger between the heat exchanger and the surrounding frame. The heat insulation structure is installed at least in the annular gap to block the heat transfer from the surrounding frame to the heat exchanger in the left-right direction and the front-back direction of the heat exchange assembly. The heat transfer from the surrounding frame to the heat exchanger is effectively blocked, and a heat insulation barrier is formed. Even if the user turns on the water heater again after turning off the water heater halfway, the residual heat of the surrounding frame can not heat the water in the heat exchanger too quickly, so that the risk of the water temperature being too high is avoided.

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: Heat exchanger; A frame having a combustion chamber, a portion of the frame surrounding the outer periphery of the heat exchanger to form an annular gap around the outer periphery of the heat exchanger; and, A heat insulation structure is installed at least within the annular gap to prevent the frame from transferring heat to the heat exchanger in the left-right and front-back directions of the heat exchange assembly.

[0006] In some embodiments, the heat exchanger includes a left end plate and a right end plate spaced apart in a left-right direction; 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 along the left-right direction, and the front side shell and the rear side shell are arranged opposite each other along 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 structure includes a left heat insulation member, a right heat insulation member, a front heat insulation member, and a rear heat insulation member. The left heat insulation member is at least partially disposed between the left side shell and the left end plate. The right heat insulation member is at least partially disposed between the right side shell and the right end plate. The front heat insulation member is at least partially disposed between the front side shell and the heat exchanger. The rear heat insulation member is at least partially disposed between the front side shell and the heat exchanger.

[0007] In some embodiments, the left thermal insulation element includes: A left heat insulation body is disposed within the combustion chamber to prevent heat transfer from the combustion chamber to the left side shell; and The left heat insulation part is sandwiched between the left side shell and the left end plate. The left heat insulation part is disposed in a part of the top surface of the left heat insulation body to form a left step structure with the left heat insulation body. The left side shell also abuts against the step surface of the left step structure.

[0008] In some embodiments, the left side surface of the left heat insulation portion is closer to the combustion chamber than the left side surface of the left heat insulation body, so that the left side surface of the left heat insulation body, the top surface of the left heat insulation body, and the left side surface of the left heat insulation portion form the left stepped structure.

[0009] In some embodiments, the left side shell includes: Left mainboard body; and The left flange is connected to the top of the left main body and is set at an angle to the left main body. The left flange is bent toward the combustion chamber and is pressed against the step surface of the left step structure.

[0010] In some embodiments, the left side shell includes: A connecting ear is attached to the end of the left flange near the combustion chamber and is set at an angle to the left flange; The connecting lug has a first through hole, the left heat insulation part has a second through hole, and the left end plate has a third through hole; the heat exchange assembly also includes a first connector, which passes through the first through hole, the second through hole, and the third through hole to fix the connecting lug, the left heat insulation part, and the left end plate together.

[0011] In some of these embodiments, it also includes: A fume hood is installed above the heat exchanger. The fume hood includes a left lug, which is located on the side of the connecting lug away from the left heat insulation part in the left-right direction, and the left lug has a fourth through hole. The first connector is also inserted into the fourth through hole to fix the connecting lug, the left heat insulation part, the left end plate and the left protruding lug together.

[0012] In some of these embodiments, the first connector is an insulated screw.

[0013] In some embodiments, the left side shell further includes: A limiting plate is connected to the inner wall of the left main body, and the 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 limiting plate define a left accommodating space, and the left heat insulation body is located within the left accommodating space.

[0014] In some embodiments, the 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.

[0015] 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.

[0016] In some embodiments, the left mainboard has heat dissipation holes.

[0017] In some embodiments, the heat exchanger includes: Multiple heat exchange fins are spaced apart along the left-right direction; and A hot water pipe is inserted through multiple heat exchange fins and fixed to the left end plate and the right end plate; The left heat insulation section is provided with multiple clearance grooves, and the hot water exchange pipe is also inserted through the clearance grooves.

[0018] In some embodiments, the material of the thermal insulation structure includes 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.

[0019] In some embodiments, the thermal insulation structure is screwed, plugged in, snapped in, glued, or positioned in conjunction with the frame.

[0020] Secondly, embodiments of this application provide a gas water heater, including: The heat exchange assembly as described in any of the above embodiments; and A burner, located in the combustion chamber, is used to burn fuel gas and heat the heat exchanger.

[0021] In this embodiment, the frame is partially enclosed around the outer periphery of the heat exchanger, forming an annular gap. This helps to isolate the combustion chamber from the heat exchanger, preventing the heat accumulated in the frame during combustion from being directly conducted to the heat exchanger. This reduces direct heat conduction and minimizes the impact of the high temperature of the frame on the water temperature inside the heat exchanger.

[0022] Furthermore, the insulation structure is installed at least within the annular gap, effectively blocking heat transfer from the frame to the heat exchanger and forming a heat insulation barrier. Even if the user turns the water heater off and then on again, it can prevent the residual heat of the frame from heating the water in the heat exchanger too quickly, thus avoiding the risk of excessively high outlet water temperature. 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 8A 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: 1000, Heat exchange assembly; 100, Heat exchanger; 110, End plate; 111, Left end plate; 111a, Third through hole; 112, Right end plate; 120, Heat exchange fins; 130, Hot water pipe; 131, Straight pipe section; 132, Bent pipe section; 140, Inlet pipe section; 150, Outlet pipe section; 200, Enclosure; 200a, Combustion chamber; 200b, Annular gap; 210, Left side shell; 211, Left main body; 211a, Heat dissipation hole; 211b, Support lug; 212, Left flange; 212a, Bending hole; 213, Connecting lug; 213a, First through hole; 214, Limiting plate; 214a, Support part; 214b, Limiting part; 215, Left protrusion; 2 15a. Vent hole; 220. Right side shell; 230. Front side shell; 231. Front main body; 232. Bending structure; 232a. Bending part; 232b. Connecting part; 233. Upper limit structure; 234. Lower limit structure; 235. Front protrusion; 240. Rear side shell; 300. Heat insulation structure; 310. Left heat insulation component; 311. Left heat insulation main body; 312. Left heat insulation part; 312a. Second through hole; 312b. Clearance groove; 313. Left step structure; 320. Right heat insulation component; 330. Front heat insulation component; 340. Rear heat insulation component; 400. First connecting component; 500. Smoke hood; 510. Left lug; 510a. Fourth through hole; 600. Second connecting component. 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 component 1000. The burner ignites the gas through an ignition device to produce a flame, and 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 component 1000, causing the cold water to heat up quickly. The heat exchange component 1000 isolates the water to be heated from the flame during combustion, ensuring safety during use.

[0028] like Figure 1and Figure 4 As shown, the heat exchange assembly 1000 includes a frame 200 and a heat exchanger 100. The frame 200 can be square, which facilitates standardization and mass production, helping to reduce production costs. Part of the frame 200 surrounds the outer periphery of the heat exchanger 100 and has a combustion chamber 200a. The burner is disposed within the combustion chamber 200a. 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 heat exchanger 100 is located above the burner. The burner burns the fuel gas, generating high-temperature flue gas that heats the heat exchanger 100. The bottom of the heat exchanger 100 absorbs the heat generated by the burner and then transfers this heat to the water flowing through it, raising the water temperature.

[0029] 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.

[0030] Please continue reading. Figure 4 An annular gap 200b is formed between the frame 200 and the heat exchanger 100, which helps to isolate the combustion chamber 200a from the heat exchanger 100. This prevents the heat accumulated in the frame 200 during combustion from being directly conducted to the heat exchanger 100, 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.

[0031] The heat exchange assembly 1000 also includes a heat insulation structure 300, which is installed at least within the annular gap 200b to block the frame 200 from transferring heat to the heat exchanger 100 in the left-right direction AA and the front-back direction BB. In this embodiment, the left-right direction AA can be the length direction of the square frame 200, and the front-back direction BB is the width direction of the square frame 200. The heat insulation structure 300 can effectively block the heat transfer from the frame 200 to the heat exchanger 100, forming a heat insulation barrier. Even if the user turns off the water heater and then turns it on again, it can prevent the residual heat of the frame 200 from heating the water in the heat exchanger 100 too quickly, thereby avoiding the risk of excessively high outlet water temperature.

[0032] For example, the material of the heat insulation structure 300 includes one of aluminum silicate cotton, aluminum silicate board, ceramic fiber, glass fiber, silicate fiber and silica fiber. The material of the heat insulation structure 300 has 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.

[0033] For example, the thermal insulation structure 300 can be an elastic thermal insulation structure or a non-elastic thermal insulation structure. When it is a non-elastic thermal insulation structure, it has a fixed shape and size, which provides higher structural stability and consistency, ensuring that the thermal insulation performance remains stable under different temperatures and operating conditions. When it is an elastic thermal insulation structure, the thickness of the elastic thermal insulation structure can be uniform or inconsistent. When the elastic thermal insulation structure is compressed by the frame 200, it can undergo elastic deformation, thereby achieving a tighter fit to the heat exchanger 100. Furthermore, when subjected to thermal expansion, the elastic thermal insulation structure can provide a certain buffering effect, reducing potential damage to the heat exchanger 100.

[0034] 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.

[0035] like Figure 2 and Figure 3 As shown, in 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.

[0036] Please continue reading. Figure 2 Furthermore, the heat exchanger 100 also includes two end plates 110, namely a left end plate 111 and a right end plate 112 arranged at intervals AA along the left and right directions. The left end plate 111 and the right end plate 112 are respectively disposed 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.

[0037] Understandably, both the left end plate 111 and the right end plate 112 are connected to the frame 200, forming a robust structure that provides additional strength and stability to the heat exchanger 100.

[0038] like Figure 2 and Figure 3 As shown, specifically, the hot water exchange pipe 130 includes a straight pipe section 131 and a curved pipe section 132. The straight pipe section 131 is provided with multiple segments, which are inserted into multiple heat exchange fins 120 in the left-right direction AA, so that the water in the straight pipe section 131 can exchange heat with the heat exchange fins 120, increasing the contact area between the water and the heat exchange fins 120. The two ends of the curved pipe section 132 are respectively connected to two adjacent straight pipe sections 131. The curved pipe section 132 is connected to the left end plate 111 and the right end plate 112, which enhances the overall structural stability of the hot water exchange pipe 130, and can be firmly mounted above the burner to ensure 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, with the inlet pipe section 140 connected to the first section of the multiple straight pipe sections 131 and the outlet pipe section 150 connected to the last section of the multiple straight pipe sections 131.

[0039] like Figure 4 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 AA, and the front side shell 230 and the rear side shell 240 are arranged opposite each other in the front-back direction BB. 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.

[0040] Please continue reading. Figure 4The heat insulation structure 300 includes a left heat insulation member 310, a right heat insulation member 320, a front heat insulation member 330, and a rear heat insulation member 340. The left heat insulation member 310 is at least partially disposed between the left side shell 210 and the left end plate 111, and the right heat insulation member 320 is at least partially disposed between the right side shell 220 and the right end plate 112, so as to prevent the left side shell 210 and the right side shell 220 from directly contacting the left end plate 111 and the right end plate 112, and reduce the heat transfer to the left end plate 111 and the right end plate 112 through the left side shell 210 and the right side shell 220. The front heat insulation element 330 is at least partially disposed between the front shell 230 and the heat exchanger 100, and the rear heat insulation element 340 is at least partially disposed between the front shell 230 and the heat exchanger 100. The front heat insulation element 330 and the rear heat insulation element 340 mainly contact a number of heat exchange fins 120, a portion of the left end plate 111 and a portion of the right end plate 112, thereby limiting the indirect transfer of heat from the front shell 230 and the rear shell 240 to the hot water pipe 130.

[0041] like Figure 5 As shown, in one embodiment, the left heat insulation member 310 includes a left heat insulation body 311 and a left heat insulation part 312. The surface area of ​​the left heat insulation body 311 in contact with the left side shell 210 is larger than the surface area of ​​the left heat insulation part 312 in contact with the left side shell 210. The left heat insulation body 311 is disposed in the combustion chamber to block the transfer of heat from the combustion chamber 200a to the left side shell 210, thereby reducing the heat radiation and conduction from the combustion chamber 200a to the surrounding components, which helps to control the temperature of the left side shell 210. Lowering the temperature of the left side shell 210 can greatly reduce the heat transferred to the left end plate 111. The left heat insulation part 312 is sandwiched between the left side shell 210 and the left end plate 111. Due to the presence of the left heat insulation part 312, the residual heat on the left side shell 210 can reduce the further heating of the water in the heat exchanger 100, thereby preventing the water temperature from being too high when the user restarts the gas water heater.

[0042] Understandably, the left heat insulation body 311 and the left heat insulation part 312 can be either an integral component or separate components. An integral component reduces connection points and simplifies the manufacturing process, eliminating the need to manufacture and assemble multiple parts separately, thus improving production efficiency. A separate component design allows for the replacement of only one part when the left heat insulation body 311 or the left heat insulation part 312 is damaged, without having to replace the entire left heat insulation component 310.

[0043] like Figure 6 As shown, the left heat insulation part 312 is disposed in a portion of the top surface of the left heat insulation body 311 to form a left step structure 313 with the left heat insulation body 311. The left side shell 210 also abuts against the step surface of the left step structure 313, which enhances the stability of the left heat insulation part 310 and ensures the correct position of the left heat insulation part 312 when it abuts against the left end plate 111, thereby maintaining the best heat insulation effect.

[0044] In one embodiment, the left side surface of the left heat insulation portion 312 is closer to the combustion chamber 200a than the left side surface of the left heat insulation body 311, so that the left side surface of the left heat insulation body 311, the top surface of the left heat insulation body 311, and the left side surface of the left heat insulation portion 312 form a left step structure 313. Understandably, the left step structure 313 is located on the side away from the combustion chamber 200a, and part of the left shell 210 is positioned on the left step structure 313. In order to enable the front heat insulation member 330 to be positioned by the left shell 210 at the same time as the left heat insulation member 310, a first front step structure is provided on the side of the front heat insulation member 330 facing the left shell 210. The step surface of the first front step structure is flush with the step surface of the left step structure 313, so that the left shell 210 abuts against the step surface of the first front step structure at the same time, so that the heat insulation structure 300 near the left shell 210 can be limited and fixed by the left shell 210.

[0045] Understandably, the rear heat insulation element 340 is the same as or similar in design to the aforementioned front heat insulation element 330, and will not be described in detail here.

[0046] Continue reading Figure 6 In one embodiment, the left insulation section 312 is further provided with multiple clearance grooves 312b. The hot water exchange pipe 130 passes through the clearance grooves 312b. Specifically, a section connecting the straight pipe section 131 and the curved pipe section 132 passes through the clearance groove 312b. When the temperature changes, the hot water exchange pipe 130 may undergo thermal expansion. The design of the clearance grooves 312b 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 310, and ensure that the left insulation component 310 maintains its designed performance over a long period of time.

[0047] Understandably, the right heat insulation element 320 is designed the same as or similar to the left heat insulation element 310 described above, and will not be described again here.

[0048] like Figure 7 As shown, in one embodiment, the left side shell 210 includes a left main body 211 and a left flange 212. The left main body 211 is the main body of the left side shell 210 and provides stable support for the left flange 212. The two sides of the left main body 211 are connected to the front side shell 230 and the rear side 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 towards the combustion chamber 200a and pressed against the stepped surface of the left stepped structure 313, ensuring a tight fit between the left heat insulation member 310 and the left side shell 210. During assembly, it is easy to press the left side shell 210 against the left heat insulation member 310, limiting the displacement of the left heat insulation member 310.

[0049] 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.

[0050] 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 along the front-rear direction BB, and / or, along the front-rear direction BB, multiple bending holes 212a are provided, and the multiple bending holes 212a are 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, thereby reducing the overall weight of the left side shell 210.

[0051] 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.

[0052] like Figure 7 and Figure 8 As shown, in order to limit the left heat insulation component 310, the left side shell 210 also includes a limiting plate 214. The limiting plate 214 is connected to the inner wall of the left main body 211. The limiting plate 214 is used to support and limit the bottom of the left heat insulation body 311. The limiting plate 214 provides a stable support surface for the left heat insulation component 310, ensuring that the left heat insulation body 311 is correctly positioned inside the left side shell 210, thereby improving the accuracy and consistency in the assembly process of the left side shell 210 and the left heat insulation component 310.

[0053] Please continue reading. Figure 7 and Figure 8Furthermore, the left main body 211, the left flange 212, and the limiting plate 214 define a left accommodating space. The left heat insulation body 311 is confined within this space. By restricting the movement of the left heat insulation body 311, displacement of the left heat insulation component 310 during use can be prevented, thus avoiding a decrease in heat insulation performance due to displacement. The presence of the left accommodating space also simplifies the assembly process, clearly defining the position of the left heat insulation component 310 and reducing uncertainty during assembly.

[0054] The limiting part 214b can be provided in multiple ways. The multiple limiting parts 214b are arranged at intervals along the front-rear direction BB. The multiple intervals of the limiting parts 214b can more evenly support the bottom end of the left heat insulation member 310, improve the load-bearing capacity of the left side shell 210, and thus improve the stability of the left heat insulation member 310.

[0055] Specifically, the limiting plate 214 and the left main body 211 are an integral structure. The limiting plate 214 can be formed by cutting the same plate and bending part of the plate inside the cut towards the combustion chamber 200a, while the unbent plate forms the left main body 211. This reduces the types and quantities of raw materials, thereby reducing production costs. Moreover, the integral structure is more robust than the assembled structure, reducing potential connection weaknesses.

[0056] like Figure 8 As shown, in one embodiment, the 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 body 211 and extends toward the combustion chamber 200a. The support portion 214a is used to abut against the bottom of the left heat insulation body 311, providing a stable support point for the left heat insulation component 310. 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 is used to cooperate with the left main body 211 to clamp the bottom of the left heat insulation body, restricting the displacement of the left heat insulation component 310 in the left-right direction AA, reducing the possibility of the left heat insulation component 310 moving due to accidental impact or temperature changes, thereby reducing the maintenance requirements.

[0057] In one configuration, the inner wall of the left main plate 211 is attached to the left heat insulation body 311, ensuring a gapless fit between them. This tight fit contributes to a more stable connection, allowing the left main plate 211 and the left heat insulation body 311 to maintain relative stability under high temperatures and mechanical vibrations. Furthermore, the gapless fit optimizes the use of space between the left main plate 211 and the left heat insulation body 311, reducing the overall volume of the heat exchange assembly 1000 and improving space utilization.

[0058] Please continue reading. Figure 8In another 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 towards the combustion chamber 200a. The end face of the left protrusion 215 abuts against the left heat insulation body 311, so that there is a gap between the left main body 211 and the left heat insulation body 311, reducing the direct contact between the left main body 211 and the left heat insulation body 311, so that a certain air layer is formed between the left main body 211 and the left heat insulation body 311. 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 avoid the initial outlet water temperature being too high.

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

[0060] like Figure 7 As shown, the left protrusion 215 further 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] Please continue reading. Figure 7 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.

[0062] 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.

[0063] like Figure 6 and Figure 7As shown, in order to connect the left side shell 210 with the left heat insulation 310 and the left end plate 111, the left side shell 210 also includes a connecting ear 213. The connecting ear 213 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 against the left heat insulation 312. The left heat insulation 312 fits against 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 312 has a second through hole 312a, 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 312a, and the third through hole 111a to fix the connecting ear 213, the left heat insulation part 310, and the left end plate 111, ensuring the stability of the connection between the connecting ear 213, the left heat insulation part 310, and the left end plate 111, and making the left heat insulation part 310 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 310.

[0064] like 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.

[0065] Furthermore, 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 312. 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 310 and the left lug 510 together. This allows the fume hood 500 to be securely mounted on top of 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 310 and the left lug 510, which simplifies the assembly process and facilitates subsequent maintenance and replacement.

[0066] Understandably, the smoke hood 500 also includes a right lug, the structure of which is the same as that of the left lug 510, and will not be described in detail here.

[0067] 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.

[0068] 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.

[0069] 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 component 330. 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 component 330 is confined within the front accommodating space to ensure that the front heat insulation component 330 maintains the correct position during installation and use.

[0070] Understandably, multiple upper limit structures 233 and multiple lower limit structures 234 are provided. Multiple upper limit structures 233 are arranged at intervals AA along the left and right directions of the bending structure 232, and multiple lower limit structures 234 are arranged at intervals AA 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 330, and reduces the displacement of the front heat insulation component 330 caused by thermal shock or external vibration.

[0071] like Figure 9As 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 330.

[0072] 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 330, so that there is a gap between the front main body 231 and the front heat insulation member 330, which helps to reduce the direct heat transfer between the front heat insulation member 330 and the front main body, and the gap helps the air to circulate and reduce the heat of the front side shell 230.

[0073] 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 330 facing the connecting part 232b is closely connected to the connecting part 232b, reducing the loosening of the front heat insulation member 330 caused by the gap between the front heat insulation member 330 and the connecting part 232b due to the setting of the front protrusion 235.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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: Heat exchanger; A frame having a combustion chamber, a portion of the frame surrounding the outer periphery of the heat exchanger to form an annular gap around the outer periphery of the heat exchanger; and, A heat insulation structure is installed at least within the annular gap to prevent the frame from transferring heat to the heat exchanger in the left-right and front-back directions of the heat exchange assembly.

2. The heat exchange assembly according to claim 1, characterized in that, The heat exchanger includes a left end plate and a right end plate spaced apart along the left-right direction; 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 along the left-right direction, and the front side shell and the rear side shell are arranged opposite each other along 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 structure includes a left heat insulation member, a right heat insulation member, a front heat insulation member, and a rear heat insulation member. The left heat insulation member is at least partially disposed between the left side shell and the left end plate. The right heat insulation member is at least partially disposed between the right side shell and the right end plate. The front heat insulation member is at least partially disposed between the front side shell and the heat exchanger. The rear heat insulation member is at least partially disposed between the front side shell and the heat exchanger.

3. The heat exchange assembly according to claim 2, characterized in that, The left heat insulation component includes: A left heat insulation body is disposed within the combustion chamber to prevent heat transfer from the combustion chamber to the left side shell; and The left heat insulation part is sandwiched between the left side shell and the left end plate. The left heat insulation part is disposed in a part of the top surface of the left heat insulation body to form a left step structure with the left heat insulation body. The left side shell also abuts against the step surface of the left step structure.

4. The heat exchange assembly according to claim 3, characterized in that, The left side surface of the left heat insulation part is closer to the combustion chamber than the left side surface of the left heat insulation body, so that the left side surface of the left heat insulation body, the top surface of the left heat insulation body, and the left side surface of the left heat insulation part form the left step structure.

5. The heat exchange assembly according to claim 4, characterized in that, The left side shell includes: The left main body is connected to the front shell and the rear shell; and The left flange is connected to the top of the left main body and is set at an angle to the left main body. The left flange is bent toward the combustion chamber and is pressed against the step surface of the left step structure.

6. The heat exchange assembly according to claim 5, characterized in that, The left side shell includes: A connecting ear is attached to the end of the left flange near the combustion chamber and is set at an angle to the left flange; The connecting lug has a first through hole, the left heat insulation part has a second through hole, and the left end plate has a third through hole; the heat exchange assembly also includes a first connector, which passes through the first through hole, the second through hole, and the third through hole to fix the connecting lug, the left heat insulation part, and the left end plate together.

7. The heat exchange assembly according to claim 6, characterized in that, Also includes: A fume hood is installed above the heat exchanger. The fume hood includes a left lug, which is located on the side of the connecting lug away from the left heat insulation part in the left-right direction, and the left lug has a fourth through hole. The first connector is also inserted into the fourth through hole to fix the connecting lug, the left heat insulation part, the left end plate and the left protruding lug together.

8. The heat exchange assembly according to claim 6, characterized in that, The first connector is an insulated screw.

9. The heat exchange assembly according to claim 5, characterized in that, The left side shell also includes: A limiting plate is connected to the inner wall of the left main body, and the 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 limiting plate define a left accommodating space, and the left heat insulation body is located within the left accommodating space.

10. The heat exchange assembly according to claim 9, characterized in that, The 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.

11. The heat exchange assembly according to claim 5, 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.

12. The heat exchange assembly according to claim 5, characterized in that, The left main board has heat dissipation holes.

13. The heat exchange assembly according to claim 3, characterized in that, The heat exchanger includes: Multiple heat exchange fins are spaced apart along the left-right direction; and A hot water pipe is inserted through multiple heat exchange fins and fixed to the left end plate and the right end plate; The left heat insulation section is provided with multiple clearance grooves, and the hot water exchange pipe is also inserted through the clearance grooves.

14. The heat exchange assembly according to claim 1, characterized in that, The material of the thermal insulation structure includes 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.

15. 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.

16. A gas-fired water heater, characterized in that, include: The heat exchange assembly as described in any one of claims 1-15; as well as A burner, located inside the combustion chamber, is used to burn fuel gas and heat the heat exchanger.

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