Heat exchange assembly and gas water heater

Abstract

This application discloses a heat exchange component and a gas water heater. The heat exchange component works in conjunction with a burner. The heat exchange component includes a frame, a heat exchanger, and an insulation structure. The frame has a combustion chamber, and the heat exchanger is located in the combustion chamber and above the burner. The heat exchanger includes a hot water pipe and two end plates facing each other in the left-right direction. The hot water pipe is connected to the end plates, and each end plate has an inlet and an outlet. The insulation structure includes a left insulation component and a right insulation component, respectively disposed between the two end plates and the two facing surfaces of the frame in the left-right direction. The technical solution of this application effectively blocks heat exchange between the frame and the heat exchanger by placing the left and right insulation components between the two end plates and the two facing surfaces of the frame in the left-right direction, thereby effectively overcoming the problem of temperature rise during water outages.

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] Gas water heaters use gas as fuel and heat water through combustion. The heat is then exchanged with cold water in a heat exchanger to provide hot water. During this process, the heat generated by combustion also exchanges heat with the surrounding frame, thus giving the frame a certain amount of heat.

[0003] However, in the relevant technology, the heat exchanger is in contact with the frame. When the gas water heater is shut off, the water in the heat exchanger stops flowing, and the heat from the frame will exchange heat with the heat exchanger, causing the water in the heat exchanger to continue to heat up, resulting in a temperature rise phenomenon when the water is shut off, which may cause scalding to users. Utility Model Content

[0004] This application provides a heat exchange chamber and a gas water heater, aiming to solve the problem of temperature rise during water outages.

[0005] To address the aforementioned technical problems, embodiments of this application provide a heat exchange component, including: The frame is equipped with a combustion chamber; A heat exchanger is disposed in the combustion chamber and located above the burner. The heat exchanger includes a hot water pipe and two end plates opposite each other in the left-right direction. The hot water pipe is connected to the two end plates, wherein the hot water pipe has an inlet end and an outlet end on the end plates. The thermal insulation structure includes a left thermal insulation member and a right thermal insulation member, which are respectively disposed between the two end plates and the two surfaces of the frame facing each other in the left-right direction.

[0006] In some embodiments, the two opposing surfaces of the left thermal insulation member in the left-right direction abut against the corresponding end plate and the frame, respectively.

[0007] In some embodiments, the left heat insulation member has a left heat insulation portion and a left heat insulation body connected to each other, the left heat insulation portion being located between two opposing surfaces of the corresponding end plate and the frame in the left-right direction, and the left heat insulation body extending downward.

[0008] In some embodiments, the left insulation body extends downward to the lower end face of the frame.

[0009] In some embodiments, the left heat insulation portion extends upward to the upper end face of the end plate.

[0010] 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 left heat insulation portion is disposed between the two surfaces of the left side shell and the adjacent end plate facing each other in the left-right direction.

[0011] 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 a left stepped structure.

[0012] 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.

[0013] In some embodiments, the two end plates are divided into a left end plate and a right end plate in the left-right direction, and 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 end plate adjacent to the left side shell 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.

[0014] In some embodiments, the hot water exchange pipe includes: Multiple straight pipe sections extend along the left-right direction, and each end of the straight pipe section in the left-right direction is connected to one of the two end plates; and, At least one curved pipe section is provided for connecting the straight pipe sections; wherein... The two straight pipe sections are respectively formed with the water inlet end and the water outlet end on the end plate. The left heat insulation member is provided with a plurality of clearance grooves in the left-right direction. The clearance grooves are provided one-to-one with the straight pipe sections. The two ends of the curved pipe section pass through two adjacent clearance grooves and are connected to two adjacent straight pipe sections.

[0015] This application also provides a gas water heater, including: The aforementioned heat exchange components; and A burner, located inside the combustion chamber, is used to burn fuel gas and heat the heat exchanger.

[0016] The technical solution of this application sets the left and right heat insulation components between the two end plates and the two facing surfaces of the frame in the left and right directions, thereby effectively blocking the heat exchange between the frame and the heat exchanger and thus effectively overcoming the problem of temperature rise during water outage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the heat exchange component provided in the embodiments of this application; Figure 2 This is a cross-sectional view of the heat exchange component in an embodiment of this application; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is an exploded view of a heat exchange component provided in an embodiment of this application; Figure 5 A schematic diagram of the structure of a heat exchange component provided in an embodiment of this application (the exhaust hood is omitted). Figure 6 An exploded view of a heat exchange component provided in an embodiment of this application (the exhaust hood is omitted). Figure 7 Another exploded view of a heat exchange component provided in an embodiment of this application (the exhaust hood is omitted). Figure 8 Another exploded view of the left heat insulation element and heat exchanger provided in an embodiment of this application; Figure 9 Another exploded view of the left thermal insulation member and part of the frame provided in an embodiment of this application; Figure 10 This is 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.

[0019] 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; 113, Water inlet; 114, Water outlet; 120, Heat exchange fins; 130, Hot water pipe; 131, Straight pipe section; 132, Bent pipe section; 140, Water inlet pipe section; 150, Water 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; 21 5. Left protrusion; 215a. 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. Lug; 510a. Fourth through hole; 600. Second connecting component. Detailed Implementation

[0020] 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.

[0021] Gas water heaters use gas as fuel and heat water through combustion. The heat is then exchanged with cold water in a heat exchange component to provide hot water. During this process, the heat generated by combustion also exchanges heat with the surrounding frame, thus giving the frame a certain amount of heat.

[0022] However, in the relevant technology, the heat exchanger is in contact with the frame. When the gas water heater is shut off, the water in the heat exchanger stops flowing, and the heat from the frame will exchange heat with the heat exchanger, causing the water in the heat exchanger to continue to heat up, resulting in a temperature rise phenomenon when the water is shut off, which may cause scalding to users.

[0023] To resolve the above issues, please refer to [link / reference]. Figures 1 to 4 as well as Figure 8This application provides a heat exchange component 1000 and a gas water heater. The heat exchange component 1000 includes a frame 200, a heat exchanger 100, and a heat insulation structure 300. The frame 200 is provided with a combustion chamber 200a. The heat exchanger 100 is disposed in the combustion chamber 200a and located above the burner. The heat exchanger 100 includes a hot water pipe 130 and two end plates 110 facing each other in the left-right direction AA. The hot water pipe 130 is connected to the two end plates 110. The hot water pipe 130 has an inlet end 113 and an outlet end 114 on the end plates 110. The heat insulation structure 300 includes a left heat insulation member 310 and a right heat insulation member 320, which are respectively disposed between the two surfaces of the two end plates 110 and the frame 200 facing each other in the left-right direction AA.

[0024] The frame 200 can be made of various materials, including high-temperature resistant metal, high-temperature resistant plastic, and other high-temperature resistant materials. No specific limitations are made here. The frame 200 can also have various shapes, including cylindrical, square, and other irregular shapes. No specific limitations are made here.

[0025] There are many ways to detachably connect the frame 200 and the smoke hood 500. The frame 200 and the smoke hood 500 can be connected by screws, by fasteners, or by other methods; no specific limitations are made here. The frame 200 and the smoke hood 500 can be made of the same material, or they can be made of different materials; no specific limitations are made here.

[0026] The combustion chamber 200a can have many shapes. It can be cylindrical, square, or other irregular shapes; no specific limitation is made here. Preferably, the shape of the burner is the same as the shape of the frame 200, so that the thickness of the frame 200 is the same throughout, making the overall structure more stable.

[0027] The heat exchanger 100 also includes multiple heat exchange fins 120, and hot water pipes 130 pass through the multiple heat exchange fins 120. The multiple heat exchange fins 120 are arranged at intervals AA in the left and right direction. The heat exchange fins 120 can increase the surface area of ​​the heat exchanger 100, improve the contact area with high-temperature flue gas, thereby enhancing the efficiency of heat exchange and helping heat to be transferred from the flue gas to the hot water pipes 130.

[0028] Water flows through the hot water exchange pipe 130, which is responsible for transferring the heat generated by the burner to the water flowing inside. The water in the hot water exchange pipe 130 absorbs heat from the pipe wall and its temperature rises, thus providing hot water. Understandably, along the front-to-back direction BB, the hot water exchange pipe 130 is bent in an "S" shape and passes through multiple heat exchange fins 120. In a limited space, the "S" shaped bend design can make more efficient use of space, increase the flow path of the water, and allow the water to have more contact time with the high-temperature flue gas, thereby improving the utilization rate of thermal energy.

[0029] There are many ways to connect the end plate 110 and the hot water pipe 130. The end plate 110 and the hot water pipe 130 are integrally formed. The end plate 110 can be detached and installed on the outer peripheral wall of the hot water pipe 130. No specific limitation is made here.

[0030] The end plate 110 can have many shapes. It can be circular, square, or other shapes. No specific limitations are made here.

[0031] The end plate 110 is made of a high-temperature resistant material with good thermal conductivity. It can exchange heat with the flue gas generated by the burner through the end plate 110, thereby better heating the water in the hot water pipe 130 and improving the heat exchange efficiency of the heat exchange component 1000.

[0032] It is understood that the two end plates 110 are divided into a left end plate 111 and a right end plate 112 in the left-right direction AA. The water inlet end 113 and the water outlet end 114 can be provided on either the left end plate 111 or the right end plate 112 at the same time, or the water inlet end 113 and the water outlet end 114 can be provided on the left end plate 111 and the right end plate 112 respectively. No specific limitation is made here. The left heat insulation member 310 is located between the left end plate 111 and the left side wall of the combustion chamber 200a, and the right heat insulation member 320 is located between the right end plate 110 and the right side wall of the burner.

[0033] Two external pipes are sealed to the inlet 113 and the outlet 114 respectively. The external pipe connected to the inlet 113 delivers water to the heat exchanger 100. After the water exchanges heat with the heat exchanger 100, it becomes hot water. The hot water is delivered from the outlet 114 to the external pipe connected to the outlet section for user use.

[0034] There are many types of materials used for the thermal insulation structure 300. The thermal insulation structure 300 can be made of silica aerogel felt, polyurethane rigid foam, or other high-temperature resistant and heat-insulating materials. These will not be listed here.

[0035] The left heat insulation member 310 can cover the left end plate 111. This means that the projection of the left end plate 111 in the left-right direction AA will be blocked by the left heat insulation member 310, thus preventing it from reaching the wall of the combustion chamber 200a. Alternatively, the left heat insulation member 310 can partially extend between the left end plate 111 and the left side wall of the combustion chamber 200a. This means that the projection of the end plate 110 in the left-right direction AA will be partially projected onto the left side wall of the combustion chamber 200a; no specific limitation is made here. The right heat insulation member 320 can cover the right end plate 112. This means that the projection of the right end plate 112 in the right-right direction will be blocked by the right heat insulation member 320, thus preventing it from reaching the wall of the combustion chamber 200a. Alternatively, the right heat insulation member 320 can partially extend between the right end plate 112 and the right side wall of the combustion chamber 200a. This means that the projection of the end plate 110 in the right-right direction will be partially projected onto the right side wall of the combustion chamber 200a; no specific limitation is made here.

[0036] The technical solution of this application sets the left heat insulation component 310 and the right heat insulation component 320 between the two facing surfaces of the end plates 110 and the frame 200 in the left-right direction AA, thereby effectively blocking the heat exchange between the frame 200 and the heat exchanger 100, and thus effectively overcoming the problem of water outage and temperature rise.

[0037] Please see Figure 2 In some embodiments of this application, the two opposing surfaces of the left heat insulation member 310 in the left-right direction AA abut against the corresponding end plate 110 and the frame 200, respectively. This can be understood as the left side wall of the combustion chamber 200a abutting against one side of the left heat insulation member 310, and the left end plate 111 abutting against the other side of the left heat insulation member 310, so that the left heat insulation member 310 is clamped by the left side wall of the combustion chamber 200a and the left end plate 111. This arrangement isolates the left end plate 111 and the frame 200 by the left heat insulation member 310. Simultaneously, the abutment between the left heat insulation member 310 and the frame 200 partially obstructs the wall of the combustion chamber 200a, thereby reducing the contact area between the flue gas generated by the burner and the frame, and thus reducing the heat exchange efficiency between the flue gas generated by the burner and the frame. This allows the flue gas generated by the burner to better exchange heat with the hot water pipe 130, improving the heat exchange efficiency of the heat exchange assembly 1000.

[0038] Understandably, the two opposing surfaces of the right heat insulation component 320 in the left-right direction AA abut against the right end plate 112 and the right cavity wall of the combustion chamber 200a, respectively, which will not be elaborated here.

[0039] Please refer to the following: Figures 2 to 3In some embodiments of this application, the left heat insulation member 310 has a left heat insulation portion 312 and a left heat insulation body 311 connected to each other. The left heat insulation portion 312 is located between the two facing surfaces of the corresponding end plate 110 and the frame 200 in the left-right direction AA, and the left heat insulation body 311 extends downward. It can be understood that the left heat insulation portion 312 is located between the left end plate 111 and the left side wall of the combustion chamber 200a. With this arrangement, the left heat insulation member 310 isolates the frame 200 from the end plate 110 through the left heat insulation portion 312 for heat exchange, and at the same time, the left heat insulation body 311 can also keep the heat of the flue gas generated by the burner warm, so that the flue gas generated by the burner can better exchange heat with the heat exchanger 100, thereby improving the heating efficiency of the gas water heater.

[0040] Preferably, please refer to Figure 2 The left heat insulation body 311 extends to the lower end face of the frame 200. This arrangement ensures that the flue gas generated in the combustion chamber 200a passes through the left heat insulation body 311, allowing the left heat insulation body 311 to fully insulate the flue gas, thereby enabling the flue gas generated by the burner to better exchange heat with the heat exchanger 100, and thus improving the heating efficiency of the gas water heater.

[0041] Please see Figure 3 In some embodiments of this application, the left heat insulation portion 312 extends upward to the upper end face of the end plate 110. It can be understood that the projection of the end plate 110 in the left-right direction AA will be blocked by the end plate 110, thus preventing it from being projected onto the cavity wall of the combustion chamber 200a. With this configuration, the area directly opposite the end plate 110 and the frame 200 is reduced by the blocking effect of the left heat insulation portion 312, thereby reducing the heat exchange efficiency between the heat exchanger 100 and the frame 200, which effectively solves the problem of heating up during water outages.

[0042] Furthermore, please refer to the following: Figures 4 to 5The hot water pipe 130 includes multiple straight pipe sections 131 and at least one curved pipe section 132. The multiple straight pipe sections 131 extend in the left-right direction AA. The two ends of the straight pipe sections 131 in the left-right direction AA are respectively connected to the end plates 110. The curved pipe section 132 is used to connect the straight pipe sections 131. The two straight pipe sections 131 have an inlet end 113 and an outlet end 114 respectively formed on the end plate 110. The left heat insulation member 310 is provided with multiple clearance grooves 312b. The clearance grooves 312b are provided one-to-one with the straight pipe sections 131. The two ends of the curved pipe section 132 pass through two adjacent clearance grooves 312b and are connected to two adjacent straight pipe sections 131. This configuration increases the contact area between the heat exchanger 100 and the flue gas generated by the burner through multiple straight pipe sections 131, thereby improving the heat exchange efficiency between the heat exchanger 100 and the burner. At the same time, only the clearance groove 312b is provided for the extension of the bent pipe section 132, and a left heat insulation part 312 is formed between the two clearance grooves 312b. The shielding of the left heat insulation part 312 reduces the area directly opposite the end plate 110 and the frame 200, thereby reducing the heat exchange efficiency between the heat exchanger 100 and the frame 200. This effectively solves the problem of heating up during water outages.

[0043] This can be understood as follows: one end of each of the two straight pipe sections 131 is connected to the inlet end 113 and the outlet end 114, and the other end of each of the two straight pipe sections 131 is connected through the bent pipe section 132. The remaining straight pipe sections 131 are connected to both ends of the outlet end 113 through the bent pipe section 132, so that all the straight pipe sections 131 are connected.

[0044] Specifically, when there are two straight pipe sections 131, one end of each section 131 is connected to the inlet 113 and the outlet 114, and the other end of each section 131 is connected via a bend 132. When there are three straight pipe sections 131, one end of each of two sections 131 is connected to the inlet 113 and the outlet 114, and the other straight pipe section 131 is connected to the other ends of the two sections 131 via two bends 132. These configurations will not be listed individually here.

[0045] Preferably, the number of straight pipe sections 131 is even, so that the inlet end 113 and the outlet end 114 are located on the same end plate 110. This facilitates the connection between the heat exchanger 100 and the external pipeline, and also facilitates the arrangement of the external pipeline, thereby reducing the overall size of the gas water heater.

[0046] 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 left heat insulation part 312 is disposed between the two facing surfaces of the left side shell 210 and the left end plate 111 in the left-right direction AA. This configuration, with its 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.

[0047] Please refer to the following: Figures 6 to 7 The surface areas of the left shell 210 and the right shell 220 are both smaller than the surface areas of the front shell 230 and the rear shell 240. The heat insulation structure 300 also includes a front heat insulation element 330 and a rear heat insulation element 340. Specifically, 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, limiting the indirect transfer of heat from the front shell 230 and the rear shell 240 to the hot water pipe 130.

[0048] Please refer to the following: Figure 2 as well as Figure 9 In one embodiment, 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 combustion chamber 200a from transferring heat to the left side shell 210, thereby reducing the heat radiation and conduction of the combustion chamber 200a to the surrounding components. This helps to control the temperature of the left side shell 210, and 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.

[0049] The left heat insulation part 312 is disposed on 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.

[0050] Please see Figure 9 Specifically, the left side surface of the left heat insulation part 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 part 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.

[0051] Please refer to the following: Figure 7 as well as Figure 9 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. 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 and limit the displacement of the left heat insulation member 310.

[0052] 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.

[0053] Further, please refer to Figure 7To 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.

[0054] 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 a second insertion hole. The heat exchange assembly 1000 also includes screws, which are 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.

[0055] Please see Figure 10 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 during the assembly of the left side shell 210 and the left heat insulation component 310.

[0056] Furthermore, 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.

[0057] Multiple limiting plates 214 can be provided, and the multiple limiting plates 214 are arranged at intervals along the front-rear direction BB. The multiple interval-arranged 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.

[0058] 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.

[0059] Qin Canyue Figure 10 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 main 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.

[0060] Please refer to the following: Figure 2 as well as Figure 5 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 helps to form a more stable connection, allowing the left main plate 211 and the left heat insulation body 311 to maintain relative stability 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 311, reducing the overall volume of the heat exchange assembly 1000 and improving space utilization.

[0061] Please refer to the following: Figures 9 to 10 In 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.

[0062] 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.

[0063] Further, please refer to Figure 10 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.

[0064] Please see Figure 10 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.

[0065] 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.

[0066] Please see Figure 9 To achieve the connection between the left side shell 210, 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.

[0067] Please refer to the following: Figure 2 as well as Figure 4 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.

[0068] It should be noted that the burner, heat exchanger 100 and exhaust passage are arranged vertically in sequence. The flue gas generated by the combustion of the gas in the burner passes through the heat exchanger 100 and is then discharged from the exhaust passage. The flue gas comes into contact with the heat exchanger 100 to exchange heat, thereby heating the water inside the heat exchanger 100.

[0069] 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.

[0070] Furthermore, please refer to the following: Figures 3 to 4 The exhaust hood 500 includes a lug 510, which is located on the side of the connecting lug 213 away from the left heat insulation part 312. The lug 510 has a fourth through hole 510a, in which a first connector 400 passes through the fourth through hole 510a to fix the connecting lug 213, the left heat insulation part 310 and the lug 510 together. This allows the exhaust 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 lug 510, which simplifies the assembly process and facilitates subsequent maintenance and replacement.

[0071] Please see Figure 3 In one embodiment, the heat exchange assembly 1000 further includes a second connector 600, which is used to connect the fume hood 500, the left heat insulation member 310, and the left end plate 111, so as to fix the fume hood 500, the left heat insulation member 310, and the left end plate 111 to ensure the stability of the connection between the fume hood 500, the left heat insulation member 310, and the left end plate 111, and to make the left heat insulation member 310 firmly clamped between the fume hood 500 and the left end plate 111, which helps to maintain the heat insulation effect of the left heat insulation member 310.

[0072] Please see Figure 9In one embodiment, the front side 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 side 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.

[0073] 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.

[0074] Please see Figure 9 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] In some embodiments of this application, the frame 200 is made of stainless steel or galvanized sheet. This design makes stainless steel or galvanized sheet easy to process and inexpensive, thereby reducing the cost of the frame 200 and consequently reducing the cost of the heat exchange assembly 1000.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 assembly, used in conjunction with a burner, characterized in that, include: The frame is equipped with a combustion chamber; A heat exchanger is disposed in the combustion chamber and located above the burner. The heat exchanger includes a hot water pipe and two end plates opposite each other in the left-right direction. The hot water pipe is connected to the two end plates, wherein the hot water pipe has an inlet end and an outlet end on the end plates. The thermal insulation structure includes a left thermal insulation member and a right thermal insulation member, which are respectively disposed between the two end plates and the two surfaces of the frame facing each other in the left-right direction.

2. The heat exchange assembly as described in claim 1, characterized in that, The two opposing surfaces of the left heat insulation member in the left-right direction respectively abut against the corresponding end plate and the frame.

3. The heat exchange component as described in claim 1, characterized in that, The left heat insulation component has a left heat insulation part and a left heat insulation body connected to each other. The left heat insulation part is located between the corresponding end plate and the frame on two surfaces facing each other in the left-right direction, and the left heat insulation body extends downward.

4. The heat exchange component as described in claim 3, characterized in that, The left heat insulation body extends downward to the lower end face of the frame.

5. The heat exchange component as described in claim 3, characterized in that, The left heat insulation portion extends upward to the upper end face of the end plate.

6. The heat exchange assembly as described in claim 3, 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 left heat insulation portion is disposed between the two surfaces of the left side shell and the adjacent end plate facing each other in the left-right direction.

7. The heat exchange assembly according to claim 6, 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 a left stepped structure.

8. The heat exchange assembly according to claim 7, characterized in that, 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.

9. The heat exchange assembly according to claim 8, characterized in that, The two end plates are divided into a left end plate and a right end plate in the left-right direction, and 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 end plate adjacent to the left side shell 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.

10. The heat exchange assembly according to any one of claims 1 to 9, characterized in that, The hot water exchange pipe includes: Multiple straight pipe sections extend along the left-right direction, and each end of the straight pipe section in the left-right direction is connected to one of the two end plates; and, At least one curved pipe section is provided for connecting the straight pipe sections; wherein... The two straight pipe sections are respectively formed with the water inlet end and the water outlet end on the end plate. The left heat insulation member is provided with a plurality of clearance grooves in the left-right direction. The clearance grooves are provided one-to-one with the straight pipe sections. The two ends of the curved pipe section pass through two adjacent clearance grooves and are connected to two adjacent straight pipe sections.

11. A gas-fired water heater, characterized in that, include: The heat exchange assembly as described in any one of claims 1 to 10; 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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