Combustion chamber and gas water heater

Abstract

The application belongs to the technical field of water heaters, and specifically discloses a combustion cavity and a gas water heater. The combustion cavity comprises an outer shell and an inner shell. The inner shell is arranged on the inner side of the outer shell. The inner shell comprises a plurality of inner plates connected in a head-to-tail manner along the circumference of the combustion cavity. The inner plate comprises a plate main body and a surrounding edge plate arranged on the periphery of the plate main body. The surrounding edge plate is in abutment with the inner side of the outer shell. A heat dissipation space is formed between the plate main body, the surrounding edge plate and the outer shell. The heat dissipation space is provided with an air inlet hole and an air outlet hole. The surrounding edge plate comprises two surrounding edge side plates arranged opposite to each other along the width direction of the inner plate. Each surrounding edge side plate is outwardly provided with a plurality of surrounding edge convexes spaced apart along the height direction of the inner plate. The surrounding edge convexes of one of the two adjacent surrounding edge side plates are alternately connected with the surrounding edge convexes of the other surrounding edge side plate in a mortise-and-tenon connection mode. The combustion cavity provided by the application is convenient to assemble, and the contact area between the outer shell and the inner shell is small.

Description

Technical Field

[0001] This invention relates to the field of water heater technology, and more particularly to a combustion chamber and a gas water heater. Background Technology

[0002] A gas water heater is a gas-fired device that uses gas as fuel and heats water by transferring heat to cold water flowing through a heat exchanger.

[0003] Currently, combustion chambers typically include an outer shell and an inner shell located inside the outer shell. A heat dissipation space is provided between the outer shell and the inner shell, and air circulates within the heat dissipation space, which can reduce the transfer of high-temperature heat generated by combustion of gas in the inner shell to the outer shell.

[0004] In related technologies, the inner shell typically includes multiple inner panels, and there is a large contact area between the inner panels and the outer shell to allow for fasteners to pass through, thereby securing the inner panels to the outer shell. This results in low assembly efficiency. Furthermore, the large contact area between the inner panels and the outer shell reduces the volume of heat dissipation space, which may lead to excessively high local temperatures on the outer shell, damaging external components and reducing the lifespan of the gas water heater. Summary of the Invention

[0005] The first technical problem solved by the present invention is to provide a combustion chamber that can effectively reduce the contact area between the outer shell and the inner shell and is easy to assemble.

[0006] The second technical problem solved by this invention is to provide a gas water heater that can effectively reduce the temperature outside the combustion chamber and extend its service life.

[0007] The first technical problem mentioned above is solved by the following technical solution: A combustion chamber, comprising: shell; An inner shell is located inside the outer shell. The inner shell includes a plurality of inner plates connected end to end along the circumference of the combustion chamber. Each inner plate includes a plate body and a surrounding plate located around the periphery of the plate body. The surrounding plate abuts against the inner side of the outer shell, and a heat dissipation space is formed between the plate body, the surrounding plate, and the outer shell. The heat dissipation space has an air inlet and an air outlet. The edging panel includes two edging side panels arranged opposite each other along the width direction of the inner panel; each edging side panel has multiple edging protrusions that are spaced apart along the height direction of the inner panel, and the edging protrusions of one of two adjacent edging side panels are alternately mortised and tenoned with the edging protrusions of the other.

[0008] The combustion chamber described in this invention has the following advantages compared to the prior art: The two adjacent side panels are connected alternately with tenon joints, one side panel protruding and the other side panel protruding. These side panels abut against the inner side of the outer shell, securing the inner shell securely to the inside of the outer shell for easy assembly. Furthermore, the small contact area between the side panels and the inner side of the outer shell, along with the protruding edges on the side panels, increases the heat dissipation volume of the heat dissipation space. This allows air entering the heat dissipation space through the air inlet and exiting through the air outlet to carry away more heat, thus reducing the temperature of the outer shell and mitigating the risk of localized overheating.

[0009] In one embodiment, the plate body is provided with P first protrusions arranged along the height direction of the inner plate, and the P first protrusions divide the heat dissipation space into Q air-cooling channels arranged along the height direction of the inner plate, where P and Q are both positive integers, and Q = P + 1. Each of the aforementioned air-cooling channels has an air inlet and an air outlet that are connected to it, and the air inlet of the same air-cooling channel is located below the air outlet.

[0010] In one embodiment, the first convex bulge includes a base plate portion and an inclined plate portion disposed at an angle, the inclined plate portion being located above the base plate portion and the inclined plate portion being inclined from bottom to top in a direction away from the outer shell; The air outlet includes a row of first air outlets provided on the bottom plate, and the first air outlets are connected to the air-cooling channel adjacent below. In the height direction of the inner plate, the air discharged from a row of first air outlets on the bottom plate of the lower one of the two adjacent first protrusions can flow to the inclined plate of the upper one and form an air wall. The air wall can prevent the high-temperature flue gas in the inner shell from contacting the inclined plate.

[0011] In one embodiment, the air outlet includes a second air outlet, and the uppermost air-cooling channel is connected to the second air outlet; A second vent is formed between the edge panel and the main body of the panel, and / or, at least one of the main body of the panel and the edge panel is provided with the second vent.

[0012] In one embodiment, at least one of the inner plates has a second protrusion protruding inward from the plate body, the second protrusion being located above the uppermost first protrusion, and the second protrusion having a second vent hole.

[0013] In one embodiment, the outer shell includes a plurality of outer plates connected end to end along the circumference of the combustion chamber, and the outer plates are arranged in a one-to-one correspondence with the inner plates; The outer panel is provided with Q rows of air inlets along the height direction. The Q rows of air inlets and Q air-cooling channels are arranged in a one-to-one correspondence. The air inlets are connected to the corresponding air-cooling channels.

[0014] In one embodiment, both of the two side panels on the same inner plate form an additional channel with the first convex bulge, and the additional channel is connected to the air-cooling channel.

[0015] In one embodiment, the main body of the plate is provided with a plurality of third protrusions in both of the additional channels. The third protrusions on the same inner plate are provided in a one-to-one correspondence with the edge protrusions. The projection of the third protrusion along the width direction of the inner plate is located in the corresponding edge protrusion.

[0016] In one embodiment, the third convex bulge is provided with an additional vent hole, which is located at one end facing downward within the corresponding additional channel.

[0017] In one embodiment, the first convex bulge includes a base plate portion and an inclined plate portion arranged at an angle, and an intermediate plate portion connecting the base plate portion and the inclined plate portion. The inclined plate portion is located above the base plate portion and is inclined from bottom to top in a direction away from the outer shell. The intermediate plate abuts against the outer shell, or an air gap is formed between the intermediate plate and the outer shell.

[0018] The second technical problem mentioned above is solved by the following technical solution: A gas water heater includes a heat exchanger, a burner, and a combustion chamber as described in any one of the above, wherein the heat exchanger is disposed at the top of the combustion chamber and the burner is disposed at the bottom of the combustion chamber.

[0019] The gas water heater of the present invention has the following advantages compared with the prior art: The combustion chamber features a raised edge that abuts against the inner side of the outer shell, facilitating assembly and allowing for a larger heat dissipation volume. This helps reduce the temperature outside the combustion chamber and the risk of excessively high local temperatures, thus extending the lifespan of the gas water heater. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the inner shell provided in this embodiment; Figure 2 This is a structural schematic diagram of the front inner panel provided in this embodiment; Figure 3 This is a structural schematic diagram of the inner side panel provided in this embodiment; Figure 4This is a schematic diagram of the combustion chamber provided in this embodiment; Figure 5 This is an exploded view of the outer casing provided in this embodiment; Figure 6 This is a partial structural cross-sectional view of the combustion chamber at the side outer plate provided in this embodiment; Figure 7 This is a partial structural cross-sectional view of the combustion chamber at the front outer plate provided in this embodiment; Figure 8 This is a partial structural diagram showing a ventilation gap formed between the first convex bulge and the outer plate in this embodiment. Figure 9 This is a side sectional view of the gas water heater provided in this embodiment; Figure 10 This is a schematic diagram of the internal structure of the gas water heater provided in this embodiment.

[0021] Label Explanation: 10. Combustion chamber; 11. Outer shell; 12. Inner shell; 20. Heat exchanger; 30. Burner; 40. Exhaust system; 100. Outer panel; 101. Side outer panel; 102. Front outer panel; 103. Rear outer panel; 110. Positioning folded edge; 111. Through hole; 112. Positioning hole; 120. Positioning perimeter; 131. First limiting folded edge; 132. Second limiting folded edge; 141. First mounting strip; 142. Second mounting strip; 200. Inner panel; 201. Side inner panel; 202. Front inner panel; 203. Rear inner panel; 210. Main panel; 220. Edge panel; 221. Edge side panel; 222. Edge top panel; 223. Edge bottom panel; 230. Edge protrusion; 240. First protrusion; 241. Bottom panel; 242. Inclined panel; 243. Middle panel; 250. Second protrusion; 260. Third protrusion; 300. Heat dissipation space; 301. Air cooling channel; 302. Ventilation gap; 303. Additional channel; 310. Air inlet; 320. Air outlet; 321. First air outlet; 322. Second air outlet; 330. Additional air outlet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 invention 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, they should not be construed as limitations on this invention.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Reference Figures 1 to 5 As shown, this embodiment provides a combustion chamber 10, which includes an outer shell 11 and an inner shell 12.

[0027] Specifically, the inner shell 12 is located inside the outer shell 11. The inner shell 12 includes a plurality of inner plates 200 connected end to end along the circumference of the combustion chamber 10. Each inner plate 200 includes a plate body 210 and a perimeter plate 220 disposed around the plate body 210. The perimeter plate 220 abuts against the inner side of the outer shell 11, and a heat dissipation space 300 is formed between the plate body 210, the perimeter plate 220, and the outer shell 11 (see reference). Figure 6 The heat dissipation space 300 has an air inlet 310 and an air outlet 320. The edge panel 220 includes two edge side panels 221 arranged opposite each other along the width direction of the inner panel 200; each edge side panel 221 has a plurality of edge protrusions 230 spaced apart along the height direction of the inner panel 200, and the edge protrusions 230 of one of two adjacent edge side panels 221 are alternately tenoned and tenoned with each other.

[0028] It is understandable that the mortise 230 of one of the two adjacent side panels 221 is alternately mortised and tenoned with the mortise 230 of the other to achieve mortise and tenon joint. With the side panel 220 abutting against the inner side of the outer shell 11, the inner shell 12 can be stably fixed to the inner side of the outer shell 11, which is convenient for assembly and helps to improve production efficiency.

[0029] In this embodiment, the side panel 220 abuts against the inner side of the outer shell 11 with a small contact area, and the side panel 221 with a side panel protrusion 230 can increase the heat dissipation volume of the heat dissipation space 300. This allows more heat to be carried away after the air enters the heat dissipation space 300 through the air inlet 310 and is discharged through the air outlet 320. This helps to reduce the temperature of the outer shell 11 and reduce the risk of excessive local temperature of the outer shell 11.

[0030] For example, the number of circumferential protrusions 230 on the two circumferential side plates 221 on the same inner plate 200 may be equal or unequal.

[0031] For example, the circumferential protrusions 230 on the two circumferential side plates 221 on the same inner plate 200 can be arranged symmetrically or asymmetrically.

[0032] Understandably, multiple independent heat dissipation spaces 300 are formed between the outer shell 11 and the inner shell 12, which helps to improve the accuracy of temperature control of the outer shell 11. The temperature of the outer shell 11 can be controlled by adjusting the air intake vent 310.

[0033] For example, the edging plate 220 also includes an edging top plate 222 and an edging bottom plate 223 disposed opposite to each other along the height direction of the inner plate 200, which, together with the two edging side plates 221, form an independent heat dissipation space 300 between the inner plate 200 and the outer shell 11.

[0034] For example, the shape of the circumferential protrusions 230 is trapezoidal, wherein the short side of the trapezoid of the circumferential protrusion 230 is located on the outermost side of the inner panel 200 along the width direction of the inner panel 200, which facilitates the tenon joint between two adjacent inner panels 200. With the constraint and limitation of the inner panel 200 by the outer shell 11, the trapezoidal hypotenuses corresponding to the two adjacent circumferential protrusions 230 can be stably and reliably abutted, thereby making the tenon joint between the two adjacent inner panels 200 stable and reliable.

[0035] In one feasible implementation, the ventilation area of ​​the vent 320 is larger than that of the vent 310. This allows for a higher airflow velocity entering the heat dissipation space 300 and a lower airflow velocity exiting the heat dissipation space 300, resulting in more stable heat removal and improved accuracy in controlling the temperature of the outer casing 11. It is understood that when the temperature of the outer casing 11 is high, the air intake of the vent 310 can be increased.

[0036] For example, the vent 320 can be configured as an elongated vent.

[0037] In some embodiments, refer to Figure 1 As shown, multiple inner panels 200 are arranged to form an inner cavity, in which gas can be burned. It can be understood that the outer side of the inner panel 200 refers to the side of the inner panel 200 away from the inner cavity, and the inner side of the inner panel 200 refers to the side of the inner panel 200 located inside the inner cavity.

[0038] In one possible implementation, the inner shell 12 includes four inner plates 200, namely two oppositely arranged side inner plates 201, and a front inner plate 202 and a rear inner plate 203 disposed between the two side inner plates 201.

[0039] For example, the inner panel 200 can be made of a high-temperature resistant material.

[0040] It is understood that the number of inner plates 200 in the combustion chamber 10 can also be other, and this embodiment does not limit them.

[0041] In some embodiments, refer to Figure 4 and Figure 5 As shown, the outer shell 11 includes multiple outer plates 100 connected end-to-end along the circumference of the combustion chamber 10, with each outer plate 100 corresponding to an inner plate 200. It is understood that a heat dissipation space 300 is formed between the corresponding outer plates 100 and inner plates 200. It is understood that an outer cavity is formed between the multiple outer plates 100, and the inner shell 12 is disposed within the outer cavity. It is understood that the outer side of an outer plate 100 refers to the side of the outer plate 100 away from the outer cavity, and the inner side of an outer plate 100 refers to the side of the outer plate 100 located within the outer cavity.

[0042] In one feasible embodiment, the outer casing 11 includes four outer panels 100, namely two opposing side outer panels 101, and a front outer panel 102 and a rear outer panel 103 disposed between the two side outer panels 101. In this embodiment, the two side outer panels 101 and the two side inner panels 201 are arranged in a one-to-one correspondence, the front outer panel 102 and the front inner panel 202 correspond to each other, and the rear outer panel 103 and the rear inner panel 203 correspond to each other.

[0043] It is understood that the outer plate 100 in the combustion chamber 10 can be of other quantities, and this embodiment does not limit it.

[0044] For example, at least a portion of the side outer panel 101, the front outer panel 102, and the rear outer panel 103 are integrally formed, for example, the two side outer panels 101 and the rear outer panel 103 are integrally formed, and the front outer panel 102 is detachably disposed from the two side outer panels 101, for example, fastened together by fasteners.

[0045] For example, the side outer panel 101 is bent outward on the side away from the rear outer panel 103 to form a positioning flange 110, and the positioning flange 110 is provided with a through hole 111 for fasteners to pass through (see reference). Figure 6 The positioning fold 110 abuts against the front outer panel 102. For example, the periphery of the front outer panel 102 is bent to form a positioning rim 120, and the positioning fold 110 is located on the inner side of the positioning rim 120 for convenient positioning and assembly.

[0046] For example, the positioning flange 110 is provided with a positioning hole 112 (see reference). Figure 6 The front outer plate 102 is provided with positioning ribs (not shown), which are inserted into positioning holes 112 for easy positioning and assembly. It is understood that the positioning holes 112 are elongated holes.

[0047] In some embodiments, refer to Figure 6 and Figure 7 As shown, the top of the outer panel 100 is bent to form a first limiting flange 131, which abuts against the top of the inner panel 200 (e.g., the surrounding top plate 222); and / or, the bottom of the outer panel 100 is bent to form a second limiting flange 132, which abuts against the bottom of the inner panel 200 (e.g., the surrounding bottom plate 223). With the tenon joint between the inner panels 200, assembly is more convenient and production efficiency is improved.

[0048] For example, taking the two side outer panels 101 and the rear outer panel 103 as integrally formed, the second limiting fold 132 of the front outer panel 102 is bent inward and abuts against the second limiting fold 132 of the two side outer panels 101 to achieve positioning and assembly between the front outer panel 102 and the two side outer panels 101; the first limiting fold 131 of the front outer panel 102 is bent inward and abuts against the top edge plate 222 of the front inner panel 202, and the second limiting fold 132 of the front outer panel 102... 2 is located below the second limiting folded edge 132 of the two side outer panels 101, and the perimeter bottom plate 223 of the front inner panel 202 can overlap the second limiting folded edge 132 of the two side outer panels 101; the first limiting folded edge 131 and the second limiting folded edge 132 of the rear outer panel 103 are both bent inward and clamp and limit the rear inner panel 203, and the second limiting folded edge 132 of the two side outer panels 101 are both bent inward and abut against the perimeter bottom plate 223 of the corresponding side inner panel 201.

[0049] In some embodiments, refer to Figure 2 , Figure 3 , Figures 6 to 8As shown, the main body 210 has P first protrusions 240 arranged along the height direction of the inner plate 200. These P first protrusions 240 divide the heat dissipation space 300 into Q air-cooling channels 301 arranged along the height direction of the inner plate 200, where P and Q are both positive integers, and Q = P + 1. In this embodiment, the arrangement of the P first protrusions 240 enhances the structural stability of the inner plate 200 and improves the stability of the tenon joint between two adjacent inner plates 200. Furthermore, the arrangement of the P first protrusions 240 improves the airflow direction of the heat dissipation space 300, which helps to reduce the temperature of the outer casing 11.

[0050] For example, the number of first protrusions 240 on different plate bodies 210 may be the same or different.

[0051] For example, the dimensions of the first protrusions 240 on different plate bodies 210 may be the same or different.

[0052] For example, the dimensions of the first protrusion 240 on the same plate body 210 can be the same or different.

[0053] In one feasible implementation, the dimension L1 of the first protrusion 240 along the height direction of the inner plate 200 is greater than the dimension L2 of the first protrusion 240 protruding from the plate body 210, so that the hollow plate structure composed of the outer plate 100 and the inner plate 200 has a thinner thickness, which is beneficial to improving the structural compactness of the combustion chamber 10.

[0054] For example, the length direction of the first convex bulge 240 extends along the width direction of the inner plate 200.

[0055] In one feasible implementation, each air-cooling channel 301 has an air inlet 310 and an air outlet 320 connected to it, with the air inlet 310 of the same air-cooling channel 301 located below the air outlet 320. It is understood that each air-cooling channel 301 can intake air through its corresponding air inlet 310 and exhaust air through its own air outlet 320. The air travels a shorter distance within the air-cooling channel 301, and the air stays within the air-cooling channel 301 for a shorter time, which helps to reduce the temperature difference between the air entering and exiting the heat dissipation space 300. That is, the air carries away more heat at a lower temperature, reducing the temperature of the outer casing 11.

[0056] In some embodiments, refer to Figures 6 to 8As shown, the vent 320 includes a first vent 321, which is located at the bottom of the first bulge 240 and is connected to the adjacent air-cooling channel 301 below. Taking a first bulge 240 and two adjacent air-cooling channels 301 formed by it as an example, after the air in the lower air-cooling channel 301 is discharged through the corresponding first vent 321, it will flow to the inner surface of the first bulge 240 and carry away the heat of the inner surface of the first bulge 240, reducing the burning of the inner shell 12 by the flame, and realizing the cooling of the inner plate 200 on both the inside and outside of the first bulge 240. This helps to reduce the temperature of the inner shell 12, thereby reducing the temperature of the outer shell 11, and can also supplement oxygen to ensure complete combustion of the fuel gas.

[0057] For example, the length direction of the first vent 321 extends along the thickness direction of the plate body 210.

[0058] For example, the first convex bulge 240 is provided with at least one first vent 321.

[0059] In one feasible implementation, the first convex bulge 240 includes a base plate portion 241 and an inclined plate portion 242 arranged at an angle. The inclined plate portion 242 is located above the base plate portion 241 and is inclined from bottom to top in a direction away from the outer casing 11. This can guide the flow of gas in the heat dissipation space 300, which is beneficial to reducing the temperature of the outer casing 11.

[0060] For example, a row of first air outlets 321 is provided on the bottom plate portion 241. Along the height direction of the inner plate 200, the air discharged from the row of first air outlets 321 on the bottom plate portion 241 of the two adjacent first protrusions 240 located below can flow to the inclined plate portion 242 of the upper one and form an air wall. The air wall can prevent the high-temperature flue gas in the inner shell 12 from contacting the inclined plate portion 242, that is, prevent the high-temperature flue gas in the inner shell 12 from contacting the first protrusion 240 located above, realize the cooling of the first protrusion 240 on both the inside and outside, which is beneficial to reduce the temperature of the inner shell 12, and thus beneficial to reduce the temperature of the outer shell 11, and also beneficial to reduce the airflow interference on the inside of the inner shell 12.

[0061] For example, all the first vents 321 in the same row are arranged along the width direction of the inner plate 200.

[0062] For example, the number of first air outlets 321 in each row can be the same or different.

[0063] For example, if L1 > L2, the inclined plate portion 242 can have a smaller tilt angle, which is beneficial to improve the flow guiding effect of the inclined plate portion 242 and reduce the temperature of the outer shell 11 and the inner shell 12.

[0064] In some embodiments, refer to Figures 6 to 8 As shown, the first convex bulge 240 includes not only a bottom plate portion 241 and an inclined plate portion 242 arranged at an angle, but also an intermediate plate portion 243 connected between the bottom plate portion 241 and the inclined plate portion 242.

[0065] For example, the shape of the intermediate plate portion 243 includes, but is not limited to, an arc shape or a planar shape.

[0066] In one feasible implementation, such as Figure 6 and Figure 7 As shown, the intermediate plate 243 abuts against the outer shell 11, which helps to improve the connection stability between the inner shell 12 and the outer shell 11. Combined with the first air-cooling channel 301 having an air inlet 310 and an air outlet 320, the airflow within the heat dissipation space 300 can be made more stable.

[0067] In another feasible implementation, such as Figure 8 As shown, a ventilation gap 302 is formed between the intermediate plate portion 243 and the outer shell 11, that is, the ventilation gap 302 connects two adjacent air-cooling channels 301. It can be understood that, taking the two adjacent air-cooling channels 301 separated by a first bulge 240 as an example, the air in the lower air-cooling channel 301 is not only diverted to the corresponding air outlet 320, but also diverted to the upper air-cooling channel 301 through the ventilation gap 302, which improves the airflow and uniformity in the heat dissipation space 300, smooths the airflow in the heat dissipation space 300, and helps to reduce the temperature of the outer shell 11 and the inner shell 12.

[0068] For example, the first bulge 240 protrudes from the main body 210 by a dimension L2 that is larger than the spacing L3 of the ventilation gap 302, to create a good air diversion effect. Combined with the air-cooling channel 301 having an air inlet 310 and an air outlet 320, the amount of air diverted to the corresponding air outlet 320 and the adjacent upper air-cooling channel 301 is moderate, which is beneficial to improving the dual-sided cooling effect of the inner panel 200. It is understood that the ventilation gap 302 can be adjusted proportionally during experimental design according to the air demand entering the air inlet. In some embodiments, L2 can be less than or equal to L3.

[0069] In some embodiments, refer to Figure 4 , Figure 6 and Figure 7 As shown, the vent 320 includes a second vent 322. The uppermost air-cooling channel 301 is connected to the second vent 322, which can reduce the temperature of the upper region within the heat dissipation space 300. This helps to reduce the risk of excessively high temperatures in the upper region of the casing 11, and also helps to improve airflow within the heat dissipation space 300, thereby increasing the amount of air discharged from the heat dissipation space 300 and further reducing the temperature of the casing 11.

[0070] For example, the second vent 322 is provided in the length direction along the width direction of the inner plate 200.

[0071] For example, a second vent 322 is formed between the edge panel 220 and the main body 210, and / or, at least one of the main body 210 and the edge panel 220 is provided with a second vent 322 to facilitate the formation of the second vent 322.

[0072] For example, taking the edge panel 220 including the edge top panel 222 as an example, at least one second vent 322 is formed between the edge top panel 222 and the panel body 210, for example, a plurality of second vents 322 arranged along the width direction of the inner panel 200.

[0073] For example, taking the edge panel 220 including the edge top panel 222 as an example, the edge top panel 222 is provided with at least one second vent 322, such as multiple second vents 322 arranged along the width direction of the inner panel 200.

[0074] For example, at least one inner panel 200 has a second protrusion 250 protruding inward from its main body 210. The second protrusion 250 is located above the uppermost first protrusion 240, and the second protrusion 250 has a second vent 322 to facilitate the forming of the second vent 322. Figure 9 As shown, the second convex bulge 250 can form a limiting constraint on the heat exchanger 20, which facilitates the positioning and assembly between the heat exchanger 20 and the combustion chamber 10.

[0075] For example, taking the inner shell 12 as having four inner plates 200, the front inner plate 202 and the rear inner plate 203 are provided with second protrusions 250, and the two second protrusions 250 can clamp and limit the heat exchanger 20. The heat exchanger 20 may be provided with grooves (not shown) that correspond one-to-one with the second protrusions 250, and the second protrusions 250 abut against the corresponding grooves, so that the connection is stable and reliable.

[0076] Understandably, the tops of the front inner panel 202 and the rear inner panel 203 are higher than the side inner panels 201. The heat exchanger 20 can be positioned between the front inner panel 202 and the rear inner panel 203 and abut against the first limiting flanges 131 of the two side outer panels 101 that bend outwards, which is beneficial for the positioning and assembly of the heat exchanger 20 and the combustion chamber 10. Understandably, the first limiting flanges 131 of the two side outer panels 101 that bend outwards do not abut against the top edge plate 222 of the corresponding side inner panel 201.

[0077] For example, the second convex hull 250 may be cuboid in shape.

[0078] In some embodiments, refer to Figure 4As shown, the outer panel 100 has Q rows of air inlets 310 along its height. Each of the Q rows of air inlets 310 corresponds to one of the Q air-cooling channels 301, and the air inlets 310 are connected to their respective air-cooling channels 301, facilitating the formation of the air inlets 310. Furthermore, the row arrangement of the air inlets 310 helps improve the temperature uniformity within the heat dissipation space 300, reducing the risk of excessively high local temperatures in the outer casing 11. It can be understood that all the air inlets 310 in the same row are arranged along the width direction of the outer panel 100.

[0079] For example, except for the bottom row of air inlets 310, the remaining P rows of air inlets 310 are correspondingly arranged one-to-one with the first protrusion 240, and the projection of the air inlets 310 along the center line direction can be located on the inclined plate portion 242 of the corresponding first protrusion 240. The inclined plate portion 242 guides the air entering through the air inlets 310, which facilitates upward airflow within the air-cooling channel 301, resulting in good airflow stability. This improves the temperature uniformity within the heat dissipation space 300 and reduces the risk of localized overheating of the outer casing 11.

[0080] For example, the number of air inlets 310 in each row can be the same or different.

[0081] For example, the air inlet 310 can be a circular hole. The diameter of the air inlet 310 can be 1.5mm-3mm.

[0082] In some embodiments, refer to Figure 2 and Figure 3 As shown, both side panels 221 on the same inner plate 200 form additional channels 303 between themselves and the first protrusion 240. These additional channels 303 are connected to the air-cooling channel 301, giving the heat dissipation space 300 a larger heat dissipation volume, which helps reduce the temperature of the outer casing 11. It is understood that the additional channels 303 can divert airflow from the air-cooling channel 301, improving temperature uniformity within the heat dissipation space 300 and reducing the risk of localized overheating of the outer casing 11. It is also understood that the air-cooling channel 301, through the diversion of airflow by the additional channels 303 and the ventilation gap 302, further reduces the risk of localized overheating of the outer casing 11.

[0083] In one feasible implementation, the main body 210 is provided with a plurality of third protrusions 260 protruding into both additional channels 303. The third protrusions 260 on the same inner plate 200 correspond one-to-one with the edge protrusions 230, and the projection of the third protrusion 260 along the width direction of the inner plate 200 lies within the corresponding edge protrusion 230. It is understood that the plurality of third protrusions 260 within the same additional channel 303 are spaced apart along the height direction of the inner plate 200. It is also understood that the third protrusions 260 can divert air within the corresponding additional channel 303, allowing more air to flow through the edge protrusions 230, thereby reducing the risk of excessively high local temperatures on the outer casing 11 at the edge protrusions 230.

[0084] For example, at least a portion of the projection of the third bulge 260 along the height direction of the inner plate 200 is located outside the corresponding perimeter bulge 230, which helps to improve airflow at the perimeter bulge 230 and can reduce the risk of excessive local temperature of the outer shell 11 at the perimeter bulge 230.

[0085] In one feasible implementation, the third convex bulge 260 is provided with an additional vent 330, with one end of the additional vent 330 located downwards within the corresponding additional channel 303. It is understood that the continuous discharge of air from the additional vent 330 into the additional channel 303 can improve airflow and exchange within the additional channel 303, resulting in a more uniform temperature within the additional channel 303. Furthermore, the air discharged from the additional vent 330 can further remove heat from the inner side of the plate body 210, reducing the burning effect of the flame on the inner shell 12, thus lowering the temperature of the inner shell 12 and consequently the outer shell 11. It can also replenish oxygen to ensure complete combustion of the fuel gas.

[0086] For example, the third convex bulge 260 is arc-shaped and inclined from bottom to top away from the outer casing 11. The additional vent 330 is formed by the arc-shaped periphery of the third convex bulge 260.

[0087] Reference Figures 1 to 10 As shown, this embodiment also provides a gas water heater, which includes a heat exchanger 20, a burner 30, and the aforementioned combustion chamber 10. The heat exchanger 20 is located at the top of the combustion chamber 10, and the burner 30 is located at the bottom of the combustion chamber 10. In this embodiment, the combustion chamber 10, through the setting of the surrounding protrusion 230, cooperates with the surrounding plate 220 to abut against the inner side of the outer shell 11, which facilitates assembly and allows the heat dissipation space 300 to have a large heat dissipation volume. This helps to reduce the temperature outside the combustion chamber 10 and the risk of excessively high local temperatures, thus extending the service life of the gas water heater.

[0088] In one feasible embodiment, the gas water heater further includes a flue gas exhaust device 40 located at the top of the heat exchanger 20. Taking the heat dissipation space 300 corresponding to the front inner panel 202 and the rear inner panel 203 as an example, the second air outlet 322 is located above the heat exchanger 20. A portion of the air in the heat dissipation space 300 enters the inner cavity through the first air outlet 321, participates in the heat exchange of the heat exchanger 20, and is then discharged to the outside of the gas water heater via the flue gas exhaust device 40. Another portion of the air in the heat dissipation space 300 reaches the top of the heat exchanger 20 through the second air outlet 322 and is then discharged to the outside of the gas water heater via the flue gas exhaust device 40. Taking the heat dissipation space 300 corresponding to the side inner panel 201 as an example, the second air outlet 322 is located below the heat exchanger 20. All the air in the heat dissipation space 300 can enter the inner cavity and participate in the heat exchange of the heat exchanger 20 before being discharged to the outside of the gas water heater via the flue gas exhaust device 40.

[0089] For example, the first limiting flanges 131 of the front outer panel 102 and the rear outer panel 103 are both bent and extended to form a first mounting strip 141, and the smoke exhaust device 40 can be fastened to the first mounting strip 141 by fasteners.

[0090] For example, the second limiting flanges 132 of the front outer panel 102 and the rear outer panel 103 are both bent and extended to form a second mounting strip 142, and the burner 30 can be fastened to the second mounting strip 142 by fasteners.

[0091] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0092] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A combustion chamber, characterized in that, include: Outer shell (11); The inner shell (12) is located inside the outer shell (11). The inner shell (12) includes a plurality of inner plates (200) connected end to end along the circumference of the combustion chamber. The inner plate (200) includes a plate body (210) and a perimeter plate (220) located around the plate body (210). The perimeter plate (220) abuts against the inner side of the outer shell (11). A heat dissipation space (300) is formed between the plate body (210), the perimeter plate (220) and the outer shell (11). The heat dissipation space (300) has an air inlet (310) and an air outlet (320). The edging panel (220) includes two edging side panels (221) arranged opposite to each other along the width direction of the inner panel (200); each edging side panel (221) is provided with a plurality of edging protrusions (230) spaced apart along the height direction of the inner panel (200), and the edging protrusions (230) of one of two adjacent edging side panels (221) are alternately tenoned and tenoned together with the edging protrusions (230) of the other. The main body of the plate (210) is provided with P first protrusions (240) arranged along the height direction of the inner plate (200). The P first protrusions (240) divide the heat dissipation space (300) into Q air-cooling channels (301) arranged along the height direction of the inner plate (200), where P and Q are both positive integers, and Q = P + 1. Each of the air-cooling channels (301) has an air inlet (310) and an air outlet (320) that are connected to it, and the air inlet (310) of the same air-cooling channel (301) is located below the air outlet (320); The two side panels (221) on the same inner plate (200) each form an additional channel (303) between themselves and the first protrusion (240), and the additional channel (303) is connected to the air-cooling channel (301); The main body of the plate (210) is provided with a plurality of third protrusions (260) protruding into the two additional channels (303). The third protrusions (260) on the same inner plate (200) are provided in a one-to-one correspondence with the edge protrusions (230). The projection of the third protrusion (260) along the width direction of the inner plate (200) is located inside the corresponding edge protrusion (230), and at least part of the projection of the third protrusion (260) along the height direction of the inner plate (200) is located outside the corresponding edge protrusion (230).

2. The combustion chamber according to claim 1, characterized in that, The first convex bulge (240) includes a bottom plate portion (241) and an inclined plate portion (242) arranged at an angle. The inclined plate portion (242) is located above the bottom plate portion (241) and is inclined from bottom to top in a direction away from the outer shell (11). The air outlet (320) includes a row of first air outlets (321) provided on the bottom plate (241), and the first air outlets (321) are connected to the air-cooling channel (301) adjacent below; In the height direction of the inner plate (200), the air discharged from a row of first air outlets (321) on the bottom plate portion (241) of the lower one of the two adjacent first protrusions (240) can flow to the inclined plate portion (242) of the upper one and form an air wall. The air wall can prevent the high temperature flue gas in the inner shell (12) from contacting the inclined plate portion (242).

3. The combustion chamber according to claim 1, characterized in that, The air outlet (320) includes a second air outlet (322), and the uppermost air-cooling channel (301) is connected to the second air outlet (322); A second vent (322) is formed between the edging plate (220) and the plate body (210), and / or, at least one of the plate body (210) and the edging plate (220) is provided with the second vent (322).

4. The combustion chamber according to claim 3, characterized in that, At least one of the inner plates (200) has a second protrusion (250) protruding inward from the plate body (210). The second protrusion (250) is located above the uppermost first protrusion (240), and the second protrusion (250) has a second air outlet (322).

5. The combustion chamber according to claim 1, characterized in that, The outer shell (11) includes a plurality of outer plates (100) connected end to end along the circumference of the combustion chamber, and the outer plates (100) are arranged in a one-to-one correspondence with the inner plates (200); The outer panel (100) is provided with Q rows of air inlets (310) along the height direction. The Q rows of air inlets (310) and Q air-cooling channels (301) are provided in a one-to-one correspondence. The air inlets (310) are connected to the corresponding air-cooling channels (301).

6. The combustion chamber according to claim 1, characterized in that, The third convex bulge (260) is provided with an additional vent (330), which is located in the corresponding additional channel (303) with one end facing downward.

7. The combustion chamber according to claim 1, characterized in that, The first convex bulge (240) includes a bottom plate portion (241) and an inclined plate portion (242) arranged at an angle, and an intermediate plate portion (243) connecting the bottom plate portion (241) and the inclined plate portion (242). The inclined plate portion (242) is located above the bottom plate portion (241), and the inclined plate portion (242) is inclined from bottom to top in a direction away from the outer shell (11). The intermediate plate (243) abuts against the outer shell (11), or a ventilation gap (302) is formed between the intermediate plate (243) and the outer shell (11).

8. A gas water heater, characterized in that, It includes a heat exchanger (20), a burner (30), and a combustion chamber (10) as described in any one of claims 1-7, wherein the heat exchanger (20) is disposed at the top of the combustion chamber (10) and the burner (30) is disposed at the bottom of the combustion chamber (10).

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