Heat exchange assembly and gas water heater

Abstract

The embodiment of the present application discloses a heat exchange assembly and a gas water heater. The heat exchange assembly is used in cooperation with a burner. The heat exchange assembly comprises a surrounding frame, a heat exchanger, a heat insulation structure and a first connecting piece. The surrounding frame is provided with a combustion chamber. The heat exchanger is located above the burner and is arranged in the combustion chamber. The heat insulation structure is in abutment with the wall of the burner and is located between the heat exchanger and the cavity wall of the combustion chamber. The heat insulation structure, the heat exchanger and the surrounding frame are connected through the first connecting piece. The technical scheme of the present application can separate the cavity wall of the combustion chamber and the heat exchanger through the heat insulation structure, thereby effectively blocking the heat exchange between the surrounding frame and the heat exchanger, effectively overcoming the problem of water stop heating, reducing the cost of the heat exchange assembly, and simultaneously connecting the heat insulation structure, the heat exchanger and the surrounding frame through the first connecting piece, thereby simplifying the structure of the heat exchange assembly.

Description

Technical Field

[0001] This application relates to the field of 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. This 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, giving it a certain level of warmth. When the water supply is interrupted, the water in the heat exchanger stops flowing. However, the heat from the frame continues to exchange heat with the heat exchanger, causing the water in the frame to continue heating. This can lead to a temperature rise during a water outage, potentially causing scalding to the user.

[0003] In related technologies, the frame is cooled by having water channels coiled around its outer perimeter. This method requires relatively long water channels, resulting in high costs for the heat exchange components. Utility Model Content

[0004] This application provides a heat exchange component and a gas water heater, aiming to reduce the cost of the heat exchange component.

[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 located above the burner and is disposed within the combustion chamber; A heat-insulating structure abuts against the cavity wall of the combustion chamber and is located between the heat exchanger and the cavity wall of the combustion chamber; and, First connector; The heat insulation structure, the heat exchanger, and the enclosure are connected by the first connector.

[0006] In some of these embodiments, it also includes: A smoke hood is located above the frame and has a smoke exhaust channel communicating with the combustion chamber; The heat insulation structure, the heat exchanger, the fume hood, and the enclosure are connected by the first connector.

[0007] In some embodiments, the smoke hood is fitted onto the outer peripheral wall of the enclosure.

[0008] In some embodiments, the frame extends upward and is provided with a connecting lug, the fume hood extends downward and is provided with a protruding lug, the protruding lug abuts against the outer peripheral wall of the connecting lug, and the protruding lug, the connecting lug, the heat insulation structure and the heat exchanger are connected by the first connecting member.

[0009] In some of these embodiments, the heat exchanger has an inlet and an outlet. The number of lugs is two, and the two lugs are respectively located near the water inlet end and the water outlet end; The number of the first connectors is two, and the two first connectors are correspondingly arranged with the two lugs.

[0010] In some embodiments, the heat exchange assembly further includes: Second connector; The smoke hood, the heat insulation structure, and the heat exchanger are connected by a second connector.

[0011] In some embodiments, the heat exchanger includes: Replace the hot water pipes; and, Two end plates are spaced apart along the left-right direction and connected to the hot water exchange pipe; The heat insulation structure includes a left heat insulation body and a left heat insulation portion located on the upper end face of the left heat insulation body, wherein the left heat insulation portion extends upward to the upper end face of the end plate. The smoke hood, the enclosure frame, the left heat insulation section, and the end plate are connected by the first connector.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] In some embodiments, the thermal insulation structure extends downward to the lower end face of the frame.

[0016] In some of the embodiments, the frame is made of stainless steel or galvanized sheet material.

[0017] This application also provides a gas water heater, which includes: The aforementioned heat exchange components; and A burner, located inside the combustion chamber, is used to burn fuel gas and heat the heat exchanger.

[0018] In this embodiment, there is no need to set up a water channel around the outer perimeter of the frame. By simply adding a heat insulation structure inside the heat exchange assembly, which is set between the cavity wall of the combustion chamber and the heat exchanger, heat exchange between the frame and the heat exchanger is effectively blocked, thereby effectively overcoming the problem of water interruption and temperature rise, and reducing the cost of the heat exchange assembly. At the same time, by connecting the heat insulation structure, heat exchanger, exhaust hood and frame through the first connector, the structure of separately connecting the exhaust hood and frame can be reduced, as well as the structure of separately connecting the frame to the heat insulation structure and the heat exchanger, thereby simplifying the structure of the heat exchange assembly. Attached Figure Description

[0019] 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.

[0020] 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 9Another 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.

[0021] 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; 215, 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; 520, Smoke exhaust channel; 600, Second connecting component. Detailed Implementation

[0022] 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.

[0023] Gas water heaters use gas as fuel and heat water through combustion. This 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, giving it a certain level of warmth. When the water supply is interrupted, the water in the heat exchanger stops flowing. However, the heat from the frame continues to exchange heat with the heat exchanger, causing the water in the frame to continue heating. This can lead to a temperature rise during a water outage, potentially causing scalding to the user.

[0024] In related technologies, the frame is cooled by having water channels coiled around its outer perimeter. This method requires relatively long water channels, resulting in high costs for the heat exchange components.

[0025] To resolve the above issues, please refer to the following: Figures 1 to 3 This application provides a heat exchange component 1000 and a gas water heater. The gas water heater includes a heat exchange component 1000 and a burner. The burner is used to heat the heat exchanger 100 in the heat exchange component 1000 so that the water in the heat exchanger 100 is heated.

[0026] The heat exchange assembly 1000 includes a frame 200, a heat exchanger 100, a heat insulation structure 300, and a first connector 400. The frame 200 is provided with a combustion chamber 200a. The heat exchanger 100 is located above the burner and is disposed inside the combustion chamber 200a. The heat insulation structure 300 abuts against the cavity wall of the combustion chamber 200a and is located between the heat exchanger 100 and the cavity wall of the combustion chamber 200a. The heat insulation structure 300, the heat exchanger 100, and the frame 200 are connected by the first connector 400. The burner is located on the side of the combustion chamber 200a away from the exhaust duct 520.

[0027] It can be understood that the burner, heat exchanger 100 and flue gas passage 520 are arranged vertically in sequence. The flue gas generated by the combustion of the gas in the burner will pass through the heat exchanger 100 and then be discharged from the flue gas passage 520. The flue gas comes into contact with the heat exchanger 100 to exchange heat, thereby heating the water in the heat exchanger 100.

[0028] 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.

[0029] The combustion chamber 200a can have various shapes; it can be cylindrical, square, or other irregular shapes, without specific limitations. Preferably, the shape of the burner is the same as that of the frame 200, ensuring uniform thickness throughout the frame 200 and a more stable overall structure. The flue gas generated by the burner exchanges heat with the heat exchanger 100, thereby heating the water inside the heat exchanger 100.

[0030] The thermal insulation structure 300 can be made of various materials, including silica aerogel felt, rigid polyurethane foam, and other high-temperature resistant and insulating materials. These will not be listed here. The thermal insulation structure 300 can also have various shapes, including square, cylindrical, and other shapes. No specific limitations are made here.

[0031] In this embodiment, there is no need to set up a water channel around the outer perimeter of the frame 200. It is only necessary to add a heat insulation structure 300 inside the heat exchange assembly 1000. The heat insulation structure 300 is set between the cavity wall of the combustion chamber 200a and the heat exchanger 100, thereby effectively blocking the heat exchange between the frame 200 and the heat exchanger 100, thus effectively overcoming the problem of water interruption and heating, and reducing the cost of the heat exchange assembly 1000. At the same time, by connecting the heat insulation structure 300, the heat exchanger 100 and the frame 200 through the first connector 400, the structural setup of individual connections between the frame 200, the heat insulation structure 300 and the heat exchanger 100 can be reduced, thereby simplifying the structure of the heat exchange assembly 1000.

[0032] Please refer to the following: Figure 4 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 plate 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 end plates 110 and the two surfaces of the frame 200 facing each other in the left-right direction AA.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The end plate 110 can have many shapes. It can be circular, square, or other shapes. No specific limitations are made here.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The left heat insulation component 310 has a left heat insulation part 312 and a left heat insulation body 311 connected to each other. The left heat insulation part 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 part 312 is located between the left end plate 111 and the left side wall of the combustion chamber 200a. With this configuration, the left heat insulation component 310 isolates the frame 200 from the end plate 110 through the left heat insulation part 312 for heat exchange. 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.

[0041] Please see Figures 1 to 5The 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 surfaces of the left side shell 210 and the left end plate 111 facing each other 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.

[0042] The surface areas of the left shell 210 and the right shell 220 are smaller than those 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.

[0043] In one implementation, please refer to the following: Figures 6 to 7 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 located in the combustion chamber to block the transfer of heat from the combustion chamber 200a to the left side shell 210, reducing the heat radiation and conduction from the combustion chamber 200a to the surrounding components, thereby helping 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.

[0044] The left heat insulation part 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, so that it cannot be projected onto the cavity wall of the combustion chamber 200a. With this setting, the area directly opposite the end plate 110 and the frame 200 is reduced by the blocking of the left heat insulation part 312, thereby reducing the heat exchange efficiency between the heat exchanger 100 and the frame 200, thus effectively solving the problem of heating up when the water is interrupted.

[0045] Please refer to the following: Figures 7 to 8 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.

[0046] Please refer to the following: Figures 7 to 8 In one embodiment, 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.

[0047] Please refer to the following: Figures 9 to 10 In one embodiment, the left side shell 210 includes a left main body plate 211 and a left flange 212. The left main body plate 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 plate 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 plate 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.

[0048] Understandably, the left main body plate 211 and the left flange 212 are an integral structure. The left flange 212 can be bent to the left main body plate 211 by stamping. The integral structure can reduce the connection points between the left main body plate 211 and the left flange 212, making the overall structure of the left shell 210 more robust and stable, and reducing deformation problems caused by thermal expansion.

[0049] Furthermore, please refer to the following: Figures 9 to 10To 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 plate 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.

[0050] Please refer to the following: Figures 9 to 10 The left main plate 211 has a support ear 211b, on which a first insertion hole is provided. 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.

[0051] Please refer to the following: Figures 9 to 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 plate 211. The limiting plate 214 is used to support and limit the bottom of the left heat insulation main body 311. The limiting plate 214 provides a stable support surface for the left heat insulation component 310, ensuring that the left heat insulation main 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.

[0052] Furthermore, please refer to the following: Figures 9 to 10 The left main body plate 211, the left flange 212, and the limiting plate 214 define the left accommodating space. The left heat insulation main body 311 is confined within the left accommodating space. By restricting the movement of the left heat insulation main body 311, displacement of the left heat insulation component 310 during use can be prevented, avoiding a decrease in heat insulation performance due to displacement. Furthermore, the existence of the left accommodating space simplifies the assembly process, clearly defining the position of the left heat insulation component 310 and reducing uncertainties during assembly.

[0053] 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.

[0054] Specifically, the limiting plate 214 and the left main plate 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 plate 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.

[0055] Please refer to the following: Figures 9 to 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 plate 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 member 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 plate 211 to clamp the bottom of the left heat insulation body, restricting the displacement of the left heat insulation member 310 in the left-right direction AA, reducing the possibility of the left heat insulation member 310 moving due to accidental impact or temperature change, thereby reducing the maintenance requirements. In other words, the left heat insulation body 311 extends to the lower end face of the frame 200. This configuration 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.

[0056] Please see Figure 9 In one configuration, the inner wall of the left main body 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 body 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 body plate 211 and the left heat insulation body 311, reducing the overall volume of the heat exchange assembly 1000 and improving space utilization.

[0057] Please refer to the following: Figures 9 to 10In 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 plate 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 plate 211 and the left heat insulation body 311, reducing the direct contact between the left main body plate 211 and the left heat insulation body 311, so that a certain air layer is formed between the left main body plate 211 and the left heat insulation body 311. The air layer can serve 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 plate 211. When the user turns off and on the gas water heater again, the heat transfer from the left side shell 210 to the hot water exchange pipe 130 is reduced, which helps to maintain the stability of the water temperature in the hot water exchange pipe 130 and avoids the initial outlet water temperature being too high.

[0058] Understandably, multiple left protrusions 215 are provided, and the multiple left protrusions 215 are evenly spaced along the vertical direction CC and the front-back direction BB, which helps to distribute and transfer heat more evenly, so that the left main plate 211 can achieve a more consistent heat dissipation effect.

[0059] 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.

[0060] Please see Figure 10 In one embodiment, the left main body plate 211 has heat dissipation holes 211a. The heat dissipation holes 211a can effectively disperse and release the heat on the left main body plate 211. The heat dissipated through the heat dissipation holes 211a can reduce the thermal stress caused by heat accumulation on the left main body plate 211, thereby improving the stability of the left side shell 210.

[0061] 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.

[0062] Please see Figure 4The heat exchange assembly 1000 also includes a fume hood 500, which is positioned above the heat exchanger 100. The function of the fume hood 500 is to collect and guide the exhaust gas generated during combustion, guiding the flue gas and hot gas to flow upwards, thereby improving exhaust efficiency and ensuring that the exhaust gas can be safely and effectively discharged. The insulation structure 300, heat exchanger 100, fume hood 500, and enclosure 200 are connected by a first connector 400. This arrangement, connecting the insulation structure 300, heat exchanger 100, fume hood 500, and enclosure 200 via the first connector 400, reduces the need for separate connections between the fume hood 500 and the enclosure 200, as well as between the enclosure 200 and the insulation structure 300 and the heat exchanger 100, thus simplifying the structure of the heat exchange assembly 1000.

[0063] 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.

[0064] There are many possible extension paths for the exhaust duct 520. The exhaust duct 520 can be curved, straight, or other shapes; no specific limitations are made here. Preferably, the exhaust duct 520 extends vertically to facilitate the discharge of flue gas generated by the burner.

[0065] The exhaust hood 500 can be made of various materials, including high-temperature resistant metals, high-temperature resistant plastics, and other high-temperature resistant materials; no specific limitations are made here. The exhaust hood 500 can also have various shapes, including frustum-shaped, cylindrical, and other shapes; no specific limitations are made here. The exhaust hood 500 is located above the combustion chamber 200a. The relationship between the exhaust hood 500 and the frame 200 can be either that the exhaust hood 500 is fitted onto the outer peripheral wall of the frame 200, or that the frame 200 is fitted onto the outer peripheral wall of the exhaust hood 500; no specific limitations are made here.

[0066] Please see Figure 3There are many possible sequences in which the first connector 400 connects the insulation structure 300, the heat exchanger 100, the fume hood 500, and the enclosure 200. The first connector 400 can pass through the enclosure 200, the insulation module, and the fume hood 500 in sequence to connect with the heat exchanger 100. Alternatively, the first connector 400 can pass through the fume hood 500, the enclosure 200, and the insulation module in sequence to connect with the heat exchanger 100. The first connector 400 can also pass through the enclosure 200, the fume hood 500, and the insulation module in sequence to connect with the heat exchanger 100. These are just a few examples.

[0067] Please see Figure 3 In some embodiments of this application, the exhaust hood 500 is fitted onto the outer peripheral wall of the frame 200. This can be understood as the first connector 400 passing sequentially through the exhaust hood 500, the frame 200, and the insulation structure 300 to connect with the heat exchanger 100. With this arrangement, the flue gas generated by the burner will exchange heat with the exhaust hood 500, giving the exhaust hood 500 a certain amount of heat. After the water heater is shut off, the heat on the exhaust hood 500 and the heat on the frame 200 will be isolated by the insulation structure 300, thereby effectively solving the problem of heating up during water outages.

[0068] It should be noted that the smoke hood 500 may partially abut against the outer peripheral wall of the frame 200, and the inner wall of the smoke hood 500 may completely cover the outer peripheral wall of the frame 200; no specific limitation is made here.

[0069] Please refer to the following: Figure 3 as well as 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.

[0070] Specifically, please refer to the following: Figure 3 , Figure 4 as well as Figure 9 The frame 200 extends upwards and is provided with connecting ears 213, while the fume hood 500 extends downwards and is provided with protruding ears 510. The protruding ears 510 abut against the outer peripheral wall of the connecting ears 213. The protruding ears 510, connecting ears 213, heat insulation structure 300, and heat exchanger 100 are connected by a first connecting member 400. This arrangement, by having the protruding ears 510 abut against the connecting ears 213, reduces the contact area between the fume hood 500 and the frame 200, thereby reducing the heat exchange efficiency between the fume hood 500 and the frame 200, and consequently reducing the heat received by the frame 200. This effectively solves the problem of heating up during water outages.

[0071] There are two lugs 510, which are respectively located near the water inlet 113 and the water outlet 114. There are also two first connectors 400, which are corresponding to the two lugs 510. With this arrangement, the two first connectors 400 are close to the water inlet 113 and the water outlet 114 of the heat exchanger 100, which can better position the water inlet 113 and the water outlet 114 of the heat exchanger 100, thereby making the heat exchanger 100 better connected to the external pipeline. At the same time, the two connectors can improve the stability of the heat exchanger 100 in the combustion chamber 200a.

[0072] It should be noted that the inlet end 113 and the outlet end 114 can be located on the same surface of the heat exchanger 100 on its periphery. In this case, the two lugs 510 are connected to the same surface of the heat exchanger 100. Alternatively, the inlet end 113 and the outlet end 114 can be located on two adjacent surfaces of the heat exchanger 100 on its periphery. In this case, the two lugs 510 are connected to the two surfaces of the heat exchanger 100 where the inlet end 113 and the outlet end 114 are located. Furthermore, the inlet end 113 and the outlet end 114 can be located on two opposing surfaces of the heat exchanger 100 on its periphery. In this case, the two lugs 510 are connected to the two surfaces of the heat exchanger 100 where the inlet end 113 and the outlet end 114 are located. No specific limitation is made here regarding the position of the inlet end 113 and the outlet end 114 on the heat exchanger 100.

[0073] When the inlet end 113 and the outlet end 114 are located on the same side of the heat exchanger 100, the positional relationship between the two lugs 510 and the inlet end 113 and the outlet end 114 is as follows: the two lugs 510 are located on the side of the inlet end 113 and the outlet end 114 that are far apart from each other. The two lugs 510 can also be located between the inlet end 113 and the outlet end 114. Alternatively, one lug 510 can be located between the inlet end 113 and the outlet end 114, and the other lug 510 can be located on the side of the inlet end 113 and the outlet end 114 that are far apart from each other. These are not listed one by one here.

[0074] 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 114 for use by the user.

[0075] Further, please refer to Figure 5 The 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

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

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

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

Claims

1. A heat exchange assembly, used in conjunction with a burner, characterized in that, include: The frame is equipped with a combustion chamber; A heat exchanger is located above the burner and is disposed within the combustion chamber; A heat-insulating structure abuts against the cavity wall of the combustion chamber and is located between the heat exchanger and the cavity wall of the combustion chamber; and, First connector; The heat insulation structure, the heat exchanger, and the enclosure are connected by the first connector.

2. The heat exchange assembly as described in claim 1, characterized in that, Also includes: A smoke hood is located above the frame and has a smoke exhaust channel communicating with the combustion chamber; The heat insulation structure, the heat exchanger, the fume hood, and the enclosure are connected by the first connector.

3. The heat exchange component as described in claim 2, characterized in that, The smoke hood is fitted onto the outer perimeter wall of the enclosure.

4. The heat exchange component as described in claim 3, characterized in that, The frame extends upward and is provided with a connecting lug, and the fume hood extends downward and is provided with a protruding lug. The protruding lug abuts against the outer peripheral wall of the connecting lug. The protruding lug, the connecting lug, the heat insulation structure, and the heat exchanger are connected by the first connecting member.

5. The heat exchange assembly as described in claim 4, characterized in that, The heat exchanger has an inlet end and an outlet end; The number of lugs is two, and the two lugs are respectively located near the water inlet end and the water outlet end; The number of the first connectors is two, and the two first connectors are correspondingly arranged with the two lugs.

6. The heat exchange assembly as described in any one of claims 2 to 5, characterized in that, Also includes: Second connector; The smoke hood, the heat insulation structure, and the heat exchanger are connected by a second connector.

7. The heat exchange assembly as described in any one of claims 2 to 5, characterized in that, The heat exchanger includes: Replace the hot water pipes; and, Two end plates are spaced apart along the left-right direction and connected to the hot water exchange pipe; The heat insulation structure includes a left heat insulation body and a left heat insulation part located on the upper end face of the left heat insulation body, the left heat insulation part extending upward to the upper end face of the end plate; The smoke hood, the enclosure frame, the left heat insulation section, and the end plate are connected by the first connector.

8. The heat exchange assembly as described in claim 7, 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.

9. The heat exchange assembly according to claim 8, 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.

10. The heat exchange assembly according to claim 9, 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.

11. The heat exchange assembly according to any one of claims 1 to 5, characterized in that, The thermal insulation structure extends downward to the lower end face of the frame.

12. The heat exchange assembly according to any one of claims 1 to 5, characterized in that, The frame is made of stainless steel or galvanized sheet.

13. A gas-fired water heater, characterized in that, include: The heat exchange assembly as described in any one of claims 1 to 12; 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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