Combustion assembly, combustion equipment, combustion system and combustion device

Abstract

The invention relates to a combustion assembly, combustion equipment, a combustion system and a combustion device, the combustion assembly comprises a first combustion module, the first combustion module comprises a plate body and a first combustion structure, a mounting opening is formed in the plate body in a penetrating mode, the first combustion structure is connected into the mounting opening in a matched mode, and a gas guide channel is formed in the first combustion structure. The air inlet end of the air guide channel is used for being communicated with a first air source, and the air outlet end of the air guide channel is used for being communicated with the combustion chamber. The first combustion structure can be conveniently aligned and assembled through the mounting opening formed in the plate body, so that rapid mounting is achieved, the first combustion structure can be limited through the mounting opening, and the assembling stability of the first combustion structure is improved. Meanwhile, the combustion assembly provided by the embodiment of the invention is simple in structure, convenient to produce and manufacture and beneficial to cost saving.

Description

Technical Field

[0001] This application relates to the field of combustion device technology, and in particular to a combustion component, combustion equipment, combustion system and combustion device. Background Technology

[0002] A gas water heater, also known as a gas water boiler, is a combustion device that uses gas as fuel to heat water by transferring heat to cold water flowing through a heat exchanger. Gas water heaters are widely used due to their advantages, such as instant hot water supply without waiting and a small footprint.

[0003] However, among related technologies, fully premixed combustion gas water heaters are more common. Existing gas water heaters of this type have complex structures and are difficult to manufacture and assemble. Summary of the Invention

[0004] Therefore, it is necessary to provide a combustion component, combustion equipment, combustion system, and combustion device to address the issue of how to optimize the structure of the combustion device and reduce the difficulty of manufacturing and assembly.

[0005] A combustion assembly includes a first combustion module, the first combustion module including a plate and a first combustion structure, the plate having a through-hole for mounting, the first combustion structure being fitted into the mounting hole, and the first combustion structure having a gas guide channel.

[0006] The air inlet of the air guide channel is used to connect with the first air source, and the air outlet of the air guide channel is used to connect with the combustion chamber.

[0007] In one embodiment, the number of plates is at least two, and the plates are arranged parallel to each other and spaced apart. Each plate has a through-hole, and the mounting holes on each plate are aligned one by one. The mounting holes aligned along the first direction together form a mounting hole group, and a first combustion structure is correspondingly matched with a mounting hole group.

[0008] In one embodiment, a second combustion module is further included. The second combustion module includes a main body and a second combustion structure disposed on the main body. An air passage is formed in the main body, and a flow passage communicating with the air passage is formed in the second combustion structure.

[0009] The first combustion module is disposed on the side of the second combustion module near the combustion chamber, and the flow passage is connected to the combustion chamber, and the gas passage is connected to the second gas source.

[0010] In one embodiment, at least a portion of the second combustion structure is nested within a corresponding gas guide channel, and a flow gap is formed between the outer wall of the second combustion structure and the inner wall of the gas guide channel, and the gas guide channel is connected to the first gas source through the flow gap.

[0011] In one embodiment, the main body includes a third plate and a cover connected to each other. The third plate has a first surface and a second surface opposite each other. The second combustion structure protrudes from the first surface, and the second surface is recessed toward the first surface to form an air passage groove. The cover covers the opening of the air passage groove and forms the air passage channel.

[0012] In one embodiment, the third plate is provided with a connecting portion, and the cover is provided with a first mating portion that engages with the connecting portion. When the connecting portion engages with the first mating portion, the cover covers the opening of the air passage.

[0013] In one embodiment, the second combustion structure is integrally formed with the third plate.

[0014] In one embodiment, the system further includes an airflow distribution mechanism, which is connected to the second combustion module, with one end of the airflow distribution mechanism connected to the air passage and the other end connected to the second air source.

[0015] In one embodiment, the cover has a vent, and when the cover is placed on the third plate, the vent is connected to the air passage, and the airflow distribution mechanism is fitted onto the cover and connected to the vent.

[0016] In one embodiment, the airflow distribution mechanism has at least one connecting portion protruding from the side of the cover, and an airflow collecting cavity is formed inside the airflow distribution mechanism. Each connecting portion has a distribution channel that communicates with the airflow collecting cavity. Each connecting portion is correspondingly fitted to the cover and communicates with the corresponding air vent.

[0017] In one embodiment, when there is only one plate, the main body is disposed on the side of the plate away from the combustion chamber, and either the main body or the plate has a mounting portion protruding toward the other, while the other has a second mating portion that engages with the mounting portion; or

[0018] When the number of plates is at least two, the plate that is furthest from the combustion chamber is defined as the first plate. The main body is disposed on the side of the first plate away from the combustion chamber. Either the main body or the first plate is provided with a mounting part protruding toward the other, and the other is provided with a second mating part that mates with the mounting part.

[0019] In one embodiment, the number of the first combustion structures corresponds one-to-one with the number of the second combustion structures.

[0020] In one embodiment, all the first combustion structures are arranged in at least one row along the second direction, and / or all the first combustion structures are arranged in at least one column along a third direction intersecting the second direction; and / or

[0021] All of the second combustion structures are arranged along the second direction to form at least one row, and / or all of the second combustion structures are arranged along a third direction intersecting the second direction to form at least one column.

[0022] In one embodiment, all the second combustion structures are arranged along a first direction to form at least one row of second combustion groups, and the number of the gas passages corresponds one-to-one with the number of the at least one row of second combustion groups; or

[0023] All the second combustion structures are arranged along a second direction intersecting the first direction to form at least one row of second combustion groups, and the number of the gas passages corresponds one-to-one with the number of the at least one row of second combustion groups.

[0024] In one embodiment, a cooling unit is further included, the cooling unit comprising cooling elements, each of which has cooling channels formed within it for the flow of cooling fluid. When there is only one plate, the cooling element is disposed on the side of the plate facing away from the combustion chamber and is disposed away from each of the first combustion structures; or

[0025] When the number of plates is at least two, the cooling components are all disposed between any two plates and are positioned away from each of the first combustion structures.

[0026] In one embodiment, all the first combustion structures are arranged along a first direction to form at least one column of first combustion groups, and / or all the first combustion structures are arranged along a second direction intersecting the first direction to form at least one row of first combustion groups;

[0027] The cooling element and the at least one column of the first combustion group are arranged alternately along the second direction, and / or the cooling element and the at least one row of the first combustion group are arranged alternately along the first direction.

[0028] A combustion device includes a combustion component as described in the foregoing embodiments, a combustion chamber, and a main housing with an air duct. The combustion chamber is connected to the main housing and located outside the air duct. The combustion chamber has a combustion cavity communicating with the air guide passage. The combustion device is connected to one end of the main housing and is at least partially located within the air duct.

[0029] In one embodiment, the edges of the main housing, the first combustion module, and the combustion chamber are stacked, and the edges of the main housing and the combustion chamber are fixed by fasteners, so that the combustion assembly is fixed between the main housing and the combustion chamber.

[0030] A combustion system includes the combustion device as described in the foregoing embodiments.

[0031] In one embodiment, the combustion system includes a gas supply device, which includes a first ventilation component, a second ventilation component, and a third ventilation component. The first ventilation component is connected to the second combustion module, and both the second ventilation component and the third ventilation component are connected to the air duct.

[0032] The third ventilation component is used to transport one of the fuel gas and the combustion-supporting gas, and the first ventilation component and the second ventilation component are respectively used to transport the other of the fuel gas and the combustion-supporting gas, and at least one of the first ventilation component and the second ventilation component can be connected.

[0033] A combustion device, characterized in that it includes a combustion system as described in the foregoing embodiments.

[0034] The aforementioned combustion assembly, combustion equipment, combustion system, and combustion device include a first combustion module, which comprises a plate and a first combustion structure. The plate has a through-hole for mounting, and the first combustion structure is fitted into this mounting hole. The first combustion structure also has a gas guide channel. The inlet end of the gas guide channel is connected to a first gas source, and the outlet end is connected to a combustion chamber. This application utilizes the mounting holes on the plate to facilitate the alignment and assembly of the first combustion structure, enabling rapid installation. The mounting holes also limit the movement of the first combustion structure, improving assembly stability. Furthermore, the combustion assembly provided in this application has a simple structure, is easy to manufacture, and helps save costs. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the explosion structure of the combustion device in this application.

[0036] Figure 2 This is a schematic diagram of the combustion device in this application.

[0037] Figure 3 This is a schematic diagram of the assembly of the first combustion module and the cooling unit in this application.

[0038] Figure 4 This is a schematic diagram of the assembly of the second combustion module and the airflow distribution mechanism in this application.

[0039] Figure 5 This is a cross-sectional structural diagram of the first combustion module, cooling unit, second combustion module and airflow distribution mechanism after assembly in this application.

[0040] Figure 6 for Figure 5 A magnified schematic diagram of a portion of area A.

[0041] Figure 7 This is a schematic diagram of the main structure of the subject of this application.

[0042] Figure 8 This is a schematic diagram of the airflow distribution mechanism in this application.

[0043] Figure Labels

[0044] Combustion equipment 100;

[0045] First combustion module 10;

[0046] Plate 101; Mounting port 1011; Second flange 1012; Second mating part 1013; First combustion structure 102; Air guide channel 1021; Flow gap 1022;

[0047] Second combustion module 11;

[0048] Main body 111; air passage 1111; third plate 1112; air groove 1113; cover 1114; vent 1115; connecting part 1116; first mating part 1117; first mounting part 1118;

[0049] Second combustion structure 112; Flow passage 1121;

[0050] Airflow distribution mechanism 12; connecting part 121;

[0051] Cooling unit 13; cooling component 131.

[0052] Combustion chamber 14; third flange 141; main shell 15; first flange 151; air duct 151. Detailed Implementation

[0053] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0054] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0055] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "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 based on the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] It should be noted that if 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. If 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. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0059] This application provides a gas-fired device, which can be a water heater or a wall-hung boiler, including a combustion system, a casing, a heat exchange system, a control system, and a detection system. The combustion system includes a combustion device 100, which can use the heat generated by gas resources to provide hot water to users. The structure of the combustion device 100 in this application will be described below using a gas water heater as an example. This embodiment is only used as an example and does not limit the technical scope of this application. It is understood that in other embodiments, the combustion device 100 can also be applied to heating equipment such as wall-hung boilers, which is not limited here.

[0060] Please see Figures 1 to 6 In this application, the combustion device 100 includes a combustion assembly, which includes a first combustion module 10. The first combustion module 10 includes a plate 101 and a first combustion structure 102. The plate 101 is provided with a through-hole 1011. The first combustion structure 102 is fitted into the through-hole 1011 and a gas guide channel 1021 is provided in the first combustion structure 102.

[0061] The air inlet of the air guide channel 1021 is used to connect with the first air source, and the air outlet of the air guide channel 1021 is used to connect with the combustion chamber 14.

[0062] It should be noted that, in this application, the first gas source contains a combustion-supporting gas and / or a fuel gas. The specific type of the combustion-supporting gas is not limited; for example, it may be oxygen, ozone, chlorine, etc. The specific type of the fuel gas is not limited; for example, it may be natural gas, coal gas, hydrogen, etc.

[0063] It is understandable that the first gas source can introduce fuel gas into the inlet end of the gas guide channel 1021, or introduce a mixture of combustion-supporting gas and fuel gas into the inlet end of the gas guide channel 1021. The gas entering the gas guide channel 1021 will flow out from the outlet end of the gas guide channel 1021 and enter the combustion chamber 14, and then be ignited by the electric spark in the combustion chamber 14, thereby burning in the combustion chamber 14.

[0064] This application facilitates the alignment and assembly of the first combustion structure 102 through the mounting port 1011 on the plate 101, enabling rapid installation. The mounting port 1011 also limits the position of the first combustion structure 102, improving the stability of the assembly. Furthermore, the first combustion module 10 provided in this embodiment has a simple structure, is easy to manufacture, and helps save costs.

[0065] The specific number of plates 101 is not limited. In some embodiments, there are at least two plates 101, which are parallel to each other and spaced apart. Each plate 101 has a through-hole 1011, and the mounting holes 1011 on each plate 101 are aligned one by one. The mounting holes 1011 aligned along the first direction together form a group of mounting holes 1011, and a first combustion structure 102 is correspondingly matched with a group of mounting holes 1011.

[0066] It should be noted that the specific orientation of the first direction is not limited. For ease of understanding, in this application, the first direction can correspond to the thickness direction of the plate 101.

[0067] It is understood that when the first combustion structure 102 is fitted into the mounting port 1011 group, each mounting port 1011 in the mounting port 1011 group can limit the first combustion structure 102, and each mounting port 1011 in the mounting port 1011 group can make the first combustion structure 102 be subjected to uniform force in the first direction, so as to further improve the assembly stability of the first combustion structure 102.

[0068] In other embodiments, please refer to Figure 2 and Figure 6 There are two plates 101, and the two plates 101 are parallel to each other and spaced apart. Each plate 101 has a through-hole 1011, and each mounting hole 1011 on each plate 101 is aligned with the other. The two mounting holes 1011 aligned along the first direction together form a mounting hole 1011 group. A first combustion structure 102 is correspondingly matched with a mounting hole 1011 group.

[0069] It is understandable that when the first combustion structure 102 is fitted into the mounting port 1011 group consisting of two mounting ports 1011, the two mounting ports 1011 work together to limit the position of the first combustion structure 102 and fix the air inlet and outlet of the first combustion structure 102, thereby ensuring the stable assembly of the first combustion structure 102. At the same time, the first combustion module 10 with two plates 101 has a relatively simple structure, is easy to manufacture, and helps to save costs.

[0070] In some embodiments where there are two plates 101, the plate 10 includes a first plate and a second plate, one of the first plate and the second plate has a flange on its edge, and the first plate and the second plate are connected by the flange.

[0071] It is understandable that the specific method by which the first plate and the second plate are connected by the flange is not limited, such as welding, snap-fitting, screwing, etc.

[0072] The specific connection method of the first combustion structure 102 is not limited, such as welding, bonding, etc. For some embodiments, please refer to... Figure 2 and Figure 6 The first combustion structure 102 is welded to the mounting port 1011 group consisting of two mounting ports 1011.

[0073] The specific material of the plate 101 is not limited; please refer to some embodiments. Figure 2 and Figure 6 All panels 101 are sheet metal parts.

[0074] The specific connection method between the various plates 101 is not limited, such as welding, bonding, etc. For some embodiments, please refer to... Figure 2 and Figure 6 Each plate 101 is welded together, which simplifies the manufacturing process and facilitates production.

[0075] In another aspect, this application provides a combustion device 100, including a first combustion module 10 as described in the foregoing embodiments. The first combustion module 10 also includes a second combustion module 11. The second combustion module 11 includes a main body 111 and a second combustion structure 112 disposed on the main body 111. An air passage 1111 is formed in the main body 111, and a flow passage 1121 communicating with the air passage 1111 is formed in the second combustion structure 112.

[0076] The first combustion module 10 is located on the side of the second combustion module 11 near the combustion chamber 14, and the flow passage 1121 is connected to the combustion chamber 14, and the gas passage 1111 is connected to the second gas source.

[0077] It should be noted that, in this application, the second gas source can also contain combustion-supporting gas and / or fuel gas. The second gas source can introduce combustion-supporting gas and / or fuel gas into the gas passage 1111. The gas entering the gas passage 1111 will flow through the flow passage 1121 into the combustion chamber 14, and then be ignited by the electric spark in the combustion chamber 14, thereby burning in the combustion chamber 14.

[0078] In the first scenario, when the first gas source supplies a mixture of combustion-supporting gas and fuel gas into the first combustion module 10, the second gas source does not supply gas into the second combustion module 11. Thus, the mixed gas supplied by the first gas source to the inlet of the gas guide channel 1021 flows out from the outlet of the gas guide channel 1021 and enters the combustion chamber 14, where it is ignited by an electric spark and burns. Because the combustion-supporting gas and fuel gas are thoroughly mixed in the mixed gas, the combustion reaction is relatively vigorous after ignition in the combustion chamber 14. Therefore, the first scenario is defined as the premixed combustion mode of the combustion device 100.

[0079] Correspondingly, in the second case, when the second gas source supplies a mixture of combustion-supporting gas and fuel gas into the second combustion module 11, the first gas source does not supply gas into the first combustion module 10. This second case also corresponds to the premixed combustion mode of the combustion device 100.

[0080] In the third scenario, when the first gas source supplies fuel gas into the first combustion module 10, the second gas source supplies combustion-supporting gas into the second combustion module 11. Thus, the fuel gas flowing from the first combustion module 10 comes into contact with and mixes with the combustion-supporting gas flowing from the second combustion module 11 in the combustion chamber 14, and is ignited by an electric spark within the combustion chamber 14, resulting in a relatively stable combustion reaction within the combustion chamber 14. Therefore, this third scenario is defined as the diffusion combustion mode of the combustion device 100.

[0081] Correspondingly, in the fourth case, when the second gas source introduces fuel gas into the second combustion module 11, the first gas source introduces combustion-supporting gas into the first combustion module 10. The fourth case also corresponds to the diffusion combustion mode of the combustion device 100.

[0082] In the fifth case, when the first gas source introduces a mixture of combustion-supporting gas and fuel gas into the first combustion module 10, the second gas source introduces combustion-supporting gas into the second combustion module 11. When the first combustion module 10 achieves premixed combustion, the second combustion module 11 simultaneously uses the flow channel 1121 of the second combustion module 11 to supplement the first combustion module 10 with combustion-supporting gas, so that the combustion is more complete.

[0083] Correspondingly, in the sixth case, when the second gas source introduces a mixture of combustion-supporting gas and fuel gas into the second combustion module 11, the first gas source introduces combustion-supporting gas into the first combustion module 10. When the first combustion module 10 achieves premixed combustion, the combustion-supporting gas is simultaneously supplemented to the first combustion module 10 through the flow channel 1121 of the second combustion module 11, so that the combustion is more complete.

[0084] In the seventh case, when the first gas source introduces a mixture of combustion-supporting gas and fuel gas into the first combustion module 10, the second gas source introduces a mixture of combustion-supporting gas and fuel gas into the second combustion module 11, and the first combustion module 10 and the second combustion module 11 simultaneously achieve premixed combustion mode.

[0085] Correspondingly, in the eighth case, when the second gas source introduces a mixture of combustion-supporting gas and fuel gas into the second combustion module 11, the first source introduces a mixture of combustion-supporting gas and fuel gas into the first combustion module 10, and the first combustion module 10 and the second combustion module 11 simultaneously achieve premixed combustion mode.

[0086] In the ninth case, when the first gas source introduces a mixture of combustion-supporting gas and fuel gas into the first combustion module 10, the second gas source introduces fuel gas into the second combustion module 11. The flow channel 1121 of the second combustion module 11 can utilize the combustion-supporting gas in the mixture ejected from the flow channel 1121 of the first combustion module 10 to achieve diffusion combustion. The first combustion module 10 achieves premixed combustion mode, and the second combustion module 11 achieves diffusion combustion mode.

[0087] Correspondingly, in the tenth case, when the second gas source introduces a mixture of combustion-supporting gas and fuel gas into the second combustion module 11, the first source introduces fuel gas into the first combustion module 10. The flow channel 1121 of the second combustion module 11 can utilize the combustion-supporting gas in the mixture ejected from the flow channel 1121 of the first combustion module 10 to achieve premixed combustion. The first combustion module 10 achieves diffusion combustion mode, and the second combustion module 11 achieves premixed combustion mode.

[0088] In some embodiments, please refer to Figure 5 and Figure 6 The second combustion structure 112 is at least partially nested within a corresponding gas guide channel 1021, and a flow gap 1022 is formed between the outer wall of the second combustion structure 112 and the inner wall of the gas guide channel 1021, and the gas guide channel 1021 is connected to the first gas source through the flow gap 1022.

[0089] Understandably, when the combustion device is in premixed combustion mode, a mixture of combustion-supporting gas and fuel gas is introduced through the inlet end of the first gas source guide channel 1021. The mixed gas flows from the flow gap 1022 to the outlet end of the guide channel 1021, and finally flows into the combustion chamber 14. Thus, when the premixed combustion mode is activated, the combustion gas is fully combusted, effectively shortening the combustion flame length and increasing efficiency. This can meet the high heat load requirements and effectively reduce exhaust gas generation.

[0090] When the combustion device is in diffusion combustion mode, combustion-supporting gas is introduced into the inlet of the first gas source through the gas guide channel 1021. The combustion-supporting gas flows from the flow gap 1022 to the outlet of the gas guide channel 1021. Simultaneously, fuel gas is introduced into the through-flow channel 1111 through the second gas source. The fuel gas flows through the through-flow channel 1111 and the through-flow channel 1121 to the outlet of the gas guide channel 1021. Thus, the fuel gas and combustion-supporting gas at the outlet of the gas guide channel 1021 come into brief contact and flow together into the combustion chamber 14. In this way, when diffusion combustion mode is activated, it can meet the conditions of low heat load demand, making backfire less likely and ensuring stable combustion.

[0091] When the combustion device simultaneously operates in diffusion combustion mode and premixed combustion mode, a mixture of combustion-supporting gas and fuel gas is introduced into the inlet of the first gas source guide gas passage 1021. The mixture flows from the flow gap 1022 to the outlet of the guide gas passage 1021. Simultaneously, fuel gas is introduced into the through gas passage 1111 through the second gas source. The fuel gas flows through the through gas passage 1111 and the through flow passage 1121 to the outlet of the guide gas passage 1021. Thus, the fuel gas and the mixture at the outlet of the guide gas passage 1021 briefly come into contact and flow together into the combustion chamber 14. In this way, when diffusion combustion mode and premixed combustion mode are simultaneously activated, high-load, high-efficiency combustion can be achieved within the full load adjustment range, and short flame and low waste can be achieved; stable combustion at low load power can be achieved, and backfire is less likely to occur when the minimum load power is reduced.

[0092] In other embodiments, the outlet end of the second combustion structure 112 is flush with the outlet end of the air guide channel 1021. In this way, the gas flowing out through the outlet end of the second combustion structure 112 will flow directly into the combustion chamber 14 and come into contact with the gas flowing into the combustion chamber 14 in the air guide channel 1021.

[0093] In other embodiments, the outlet end of the second combustion structure 112 is higher than the outlet end of the air guide passage 1021.

[0094] The specific style of the main body 111 is not limited. For some embodiments, please refer to... Figure 4 and Figure 5The main body 111 includes a third plate 1112 and a cover 1114 connected to each other. The third plate 1112 has a first surface and a second surface opposite to each other. A second combustion structure 112 protrudes from the first surface, and the second surface is recessed toward the first surface to form an air passage 1113. The cover 1114 covers the opening of the air passage 1113 and forms an air passage 1111.

[0095] Understandably, the third plate 1112 and the cover 1114 are easy to assemble and disassemble, which is beneficial for future maintenance and replacement. Furthermore, the separate manufacturing of the third plate 1112 and the cover 1114 simplifies the process and helps save costs.

[0096] The specific assembly method of the third plate 1112 and the cover 1114 is not limited. In some embodiments, the third plate 1112 is provided with a connecting part 1116, and the cover 1114 is provided with a first mating part 1117 that mates with the connecting part 1116. When the connecting part 1116 mates with the first mating part 1117, the cover 1114 covers the opening of the air passage 1113.

[0097] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 5 The connecting part 1116 is a threaded post with a threaded hole inside. The first mating part 1117 is a semi-circular groove. The threaded post can be pre-positioned with the outer wall of the semi-circular groove so that the cover 1114 and the opening of the air passage 1113 can be assembled. Then, the cover 1114 and the third plate 1112 are fixed with screws or bolts. The connecting part 1116 and the first mating part 1117 can be aligned with each other to achieve the positioning assembly of the cover 1114 and the opening of the air passage 1113. The connecting part 1116 and the first mating part 1117 are fixed by threaded nails.

[0098] In other embodiments, both the connecting part 1116 and the first mating part 1117 are threaded holes. The connecting part 1116 and the first mating part 1117 are pre-positioned through the threaded holes to achieve the positioning and assembly of the cover 1114 and the opening of the air passage 1113. The connecting part 1116 and the first mating part 1117 are fixed together by fasteners.

[0099] In some embodiments, the third plate 1112 and the cover 1114 are positioned and assembled by snap-fitting. For example, the connecting part 1116 is a slot and the first mating part 1117 is a buckle. The connecting part 1116 and the first mating part 1117 are positioned and assembled by the slot and the buckle to achieve the open positioning of the cover 1114 and the air passage 1113.

[0100] The specific connection method between the second combustion structure 112 and the third plate 1112 is not limited. For some embodiments, please refer to... Figure 3 and Figure 6The second combustion structure 112 and the third plate 1112 are integrally formed. In this way, the second combustion structure 112 and the third plate 1112 have good integrity and structural stability, which is conducive to improving the service life of the product.

[0101] In some embodiments, please refer to Figure 1 and Figure 6 The combustion device 100 also includes an airflow distribution mechanism 12, which is connected to the second combustion module 11. One end of the airflow distribution mechanism 12 is connected to the air passage 1111, and the other end is connected to the second gas source. It can be understood that the airflow distribution mechanism 12 can realize the transition between the second gas source and the air passage 1111, thereby optimizing the connection structure between the second combustion module 11 and the second gas source.

[0102] In some embodiments, please refer to Figure 6 A vent 1115 is provided on the cover 1114. When the cover 1114 is placed on the third plate 1112, the vent 1115 is connected to the air passage 1111, and the airflow distribution mechanism 12 is connected to the cover 1114 and is connected to the vent 1115.

[0103] In some embodiments, a vent 1115 is provided on the cover 1114. When the cover 1114 is placed on the third plate 1112, the airflow distribution mechanism 12 is connected to the cover 1114 through the vent 1115.

[0104] The specific design of the airflow distribution mechanism 12 is not limited. For some embodiments, please refer to... Figure 8 The airflow distribution mechanism 12 has at least one connecting part 121 protruding from the side of the cover 1114. An air collection cavity is formed inside the airflow distribution mechanism 12. Each connecting part 121 has a distribution channel that communicates with the air collection cavity. Each cover 1114 has a vent 1115. The number of connecting parts 121 corresponds one-to-one with the number of vents 1115. Each connecting part 121 is connected to a corresponding vent 1115. The air collection cavity of the airflow distribution mechanism 12 is connected to the air passage 1111 through the distribution channels of each connecting part 121.

[0105] The specific connection method between the connecting part 121 and the cover 1114 is not limited, for example, welding, snap-fitting, etc. In some embodiments, each connecting part 121 is inserted into the corresponding vent 1115, and the connecting part 121 and the cover 1114 are fixed by welding. In other embodiments, the size of the connecting part 121 matches the size of the vent, and each connecting part 121 is inserted into the corresponding vent 1115.

[0106] In some embodiments, when there is only one plate 101, the main body 111 is disposed on the side of the plate 101 away from the combustion chamber 14. One of the main body 111 and the plate 101 is provided with a first mounting portion 1118 protruding toward the other, and the other is provided with a second mating portion 1013 that mates with the first mounting portion 1118.

[0107] It is understandable that when the main body 111 and the plate 101 are assembled with the second mating part 1013 through the first mounting part 1118, the protruding first mounting part 1118 can make a gap between the main body 111 and the plate 101, so that the first air source can be connected to the air guide channel 1021 through the gap.

[0108] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 5 When there are multiple plates 101, the plate 101 that is farthest from the combustion chamber 14 is defined as the first plate. The main body 111 is disposed on the side of the first plate away from the combustion chamber 14. Either the main body 111 or the first plate is provided with a first mounting part 1118 protruding toward the other, and the other is provided with a second mating part 1013 that mates with the first mounting part 1118.

[0109] It is understandable that when the main body 111 and the plate 101 are assembled with the second mating part 1013 through the first mounting part 1118, the protruding first mounting part 1118 can make there be a spaced flow channel between the main body 111 and the plate 101, so that the first air source can be connected to the air guide channel 1021 through the spaced flow channel.

[0110] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 5 The first mounting part 1118 is a protruding structure on the main body 111 of the second combustion module 11, and the second mating part 1013 is a flanged hole on the first plate 101. The protruding structure can correspond to the flanged hole to realize the positioning and assembly of the main body 111 and the first plate 101, thereby ensuring that the second combustion structure 112 can be nested in the corresponding first combustion structure 102.

[0111] In some embodiments, please refer to Figure 1 and Figure 5 The number of the first combustion structure 102 corresponds one-to-one with the number of the second combustion structure 112.

[0112] It is understood that each second combustion structure 112 can be nested within a first combustion structure 102. Thus, when the combustion device 100 activates the diffusion combustion mode, the fuel gas flowing out through the flow channel 1121 of the second combustion structure 112 can be briefly mixed with the combustion-supporting gas in the gas guide channel 1021 of the first combustion structure 102 and flow evenly into the combustion chamber 14 to further improve the stability of combustion.

[0113] In some embodiments, please refer to Figure 1 and Figure 3 All the first combustion structures 102 are arranged along the second direction to form at least one row, and / or all the first combustion structures 102 are arranged along a third direction intersecting the second direction to form at least one column.

[0114] It should be noted that, in Figure 1 In this diagram, the first direction is denoted by X, the second direction by Y, and the third direction by Z. Each pair of the first, second, and third directions forms an angle. The angles formed between any two of the three directions can be, but are not limited to, 30°, 60°, 90°, 120°, etc. For ease of explanation, the following examples will use the example of two pairs of the first, second, and third directions being perpendicular.

[0115] Furthermore, the specific shape of the first combustion module 10 and / or the second combustion module 11 is not limited. For example, the first combustion module 10 and / or the second combustion module 11 can be rectangular, circular, elliptical, etc. The embodiments in this application are described with both the first combustion module and the second combustion module being rectangular; the first direction being the thickness direction of the first combustion module (which is also the thickness direction of the second combustion module), the second direction being the length direction of the first combustion module (which is also the length direction of the second combustion module), and the third direction being the width direction of the first combustion module (which is also the width direction of the second combustion module).

[0116] It should be noted that all the first combustion structures 102 are arranged in at least one row along the second direction, which can be understood as: all the first combustion structures 102 are arranged in at least one row along the length direction of the first combustion module 10, with rows spaced apart; and / or, all the first combustion structures 102 are arranged in at least one column along the third direction, which can be understood as: all the first combustion structures 102 are arranged in at least one column along the width direction of the first combustion module 10, with columns spaced apart.

[0117] In some embodiments, please refer to Figure 1 and Figure 3All the second combustion structures 112 are arranged in at least one row along the second direction, and / or all the second combustion structures 112 are arranged in at least one column along a third direction intersecting the second direction.

[0118] It should be noted that all the second combustion structures 112 are arranged in at least one row along the second direction, which can be understood as: all the second combustion structures 112 are arranged in at least one row along the length direction of the first combustion module 10, with rows spaced apart; and / or, all the second combustion structures 112 are arranged in at least one column along the third direction, which can be understood as: all the second combustion structures 112 are arranged in at least one column along the width direction of the first combustion module 10, with columns spaced apart.

[0119] In some embodiments, please refer to Figure 1 and Figure 4 All the second combustion structures 112 are arranged along the second direction to form at least one row of second combustion groups, and the number of gas passages 1111 corresponds one-to-one with the number of second combustion groups.

[0120] It is understandable that each of the second combustion structures 112 in the same row of the second combustion group can simultaneously exhaust the fuel gas in the corresponding gas passage 1111, which helps to ensure the uniform flow of fuel gas and ensure the flow rate of fuel gas, thereby ensuring the stability of combustion in the combustion chamber 14.

[0121] In some embodiments, please refer to Figure 1 and Figure 4 All the second combustion structures 112 are arranged along a third direction intersecting the second direction to form at least one row of second combustion groups, and the number of gas passages 1111 corresponds one-to-one with the number of at least one row of second combustion groups.

[0122] It is understandable that each of the second combustion structures 112 in the same second combustion group can simultaneously exhaust the fuel gas in the corresponding gas passage 1111, which helps to ensure the uniform flow of fuel gas and ensure the flow rate of fuel gas, thereby ensuring the stability of combustion in the combustion chamber 14.

[0123] In some embodiments, please refer to Figure 1 and Figure 3 The combustion device 100 also includes a cooling unit 13, which includes a cooling element 131, and each cooling element 131 has a cooling channel for the flow of cooling fluid.

[0124] Understandably, the internal cooling channels of the cooling component 131 can be circulated with cooling fluids, such as coolant or cooling gas. Thus, when the combustion device is activated, the cooling fluid flowing within the cooling component 131 can quickly reduce the high temperature generated by combustion in the plate 101, thereby improving the safety and stability of the combustion device 100. Furthermore, when the combustion device 100 is in premixed combustion or diffusion combustion mode, the cooling fluid flowing within the cooling component 131 can quickly reduce the temperature of the plate 101, which helps prevent backfire in the first combustion module 10 due to excessive temperature and reduces the generation of nitrogen oxides, contributing to environmental friendliness.

[0125] In some embodiments, when there is only one plate 101, the cooling element 131 is disposed on the side of the plate 101 away from the combustion chamber 14, and is disposed in a way that avoids the arrangement of each first combustion structure 102. It can be understood that the cooling element 131 is disposed in a way that avoids the arrangement of each first combustion structure 102, and that none of the first combustion structures 102 are on the extension path of the cooling element 131.

[0126] In some embodiments, please refer to Figure 1 and Figure 3 When there are multiple plates 101, the cooling element 131 is disposed between any two plates 101 and is disposed in a way that avoids the first combustion structure 102. It can be understood that the cooling element 131 is disposed in a way that avoids the first combustion structure 102, and that the first combustion structure 102 is not on the extension path of the cooling element 131.

[0127] In some embodiments, the surface of the plate 101 facing the cooling element 131 is recessed to form a limiting groove, the limiting groove extends toward the cooling element 131, and the groove wall of the limiting groove is adapted to the outer periphery of the cooling element 131.

[0128] It is understandable that when the cooling component 131 is located on the side of the plate 101 away from the combustion chamber 14, or when the cooling component 131 is located between the two plates 101, the cooling component 131 can be partially embedded in the limiting groove, and the groove wall of the limiting groove is in contact with the outer periphery of the cooling component 131, so as to achieve stable assembly of the cooling component 131.

[0129] In some embodiments, please refer to Figure 3 and Figure 5 All the first combustion structures 102 are arranged along the second direction to form at least one row of first flow channels 1121, and / or all the first combustion structures 102 are arranged along a third direction intersecting the second direction to form at least one column of first flow channels 1121.

[0130] The cooling element 131 and at least one row of first flow channels 1121 are arranged alternately along a third direction, and / or the cooling element 131 and at least one column of first flow channels 1121 are arranged alternately along a second direction.

[0131] In some embodiments, please refer to Figure 1 and Figure 2 The combustion device 100 also includes a combustion component, a combustion chamber 14 and a main housing 15 with an air duct 151. The combustion chamber 14 is connected to the main housing 15 and located outside the air duct 151. The combustion chamber 14 has a combustion cavity that communicates with the air guide passage 1021. The combustion component is connected to one end of the main housing 15 and is at least partially located inside the air duct 151.

[0132] In other embodiments, the combustion assembly includes a first combustion module 10, a combustion chamber 14 connected to the main housing 15 and located outside the air duct 151, the combustion chamber 14 having a combustion cavity communicating with the air guide passage 1021, the first combustion module 10 being connected between the combustion chamber 14 and the main housing 15 and at least partially located within the air duct 151.

[0133] In other embodiments, the combustion assembly includes a first combustion module 10 and a second combustion module 11. The second combustion structure 112 of the second combustion module 11 is nested in the first combustion structure 102. The second combustion module 11 and the first combustion module 10 are connected to form a combustion assembly. The combustion assembly is then connected between the combustion chamber 14 and the main housing 15 through the first combustion module 10, and is at least partially located in the air duct 151.

[0134] In some embodiments, please refer to Figure 1 and Figure 2 The edges of the main housing 15, the first combustion module 10, and the combustion chamber 14 are stacked and interconnected. Thus, the main housing 15, the first combustion module 10, and the combustion chamber 14 form a flange assembly, which is simple to assemble and provides good sealing.

[0135] In some embodiments, please refer to Figure 1 The main housing 15 has a first flange 151 at one end edge forming the outlet end of the air duct 151, which surrounds the main housing 15 circumferentially. The edge of the plate 101 of the first combustion module 10 has a second flange 1012, which is disposed on opposite sides of the plate 101 in a second direction and / or a third direction. Thus, the first combustion module 10 of the combustion assembly is supported on the first flange 151 in the first direction by the second flange 1012, and is fixed to the first flange 151 of the main housing 15 by fasteners via the third flange 141 of the combustion chamber 14.

[0136] In some embodiments, please refer to Figure 1 The combustion chamber 14 has a hollow rectangular frame structure to form a combustion cavity. The combustion chamber 14 has a third flange 141 at its edge, which surrounds the combustion chamber 14 circumferentially. The third flange 141 is supported on the first flange 151 and / or the second flange 1012 and is connected to the main housing 15 by fasteners.

[0137] Understandably, the third flange 141 is supported on the first flange 151 and / or the second flange 1012. That is, the third flange 141, which is provided on both sides of the combustion chamber 14 along the second direction, is partially supported on the first flange 151 and partially supported on the second flange 1012. The third flange 141, which is provided on both sides of the combustion chamber along the third direction, is supported on the first flange 151. Fasteners fix the main housing 15, the combustion assembly, and the combustion chamber 14 together through the mounting holes on the third flange 141 and the first flange 151, so that the combustion assembly is fixedly installed between the main housing 15 and the combustion chamber 14. In this way, the first flange 151 of the main housing 15, the second flange 1012 of the first combustion module 10, and the third flange 141 of the combustion chamber 14 are stacked sequentially in the first direction and connected to each other by fasteners to form a flange fit, thereby achieving good sealing performance.

[0138] In some embodiments, see Figure 1 The main housing 15 has a first flange 151 with a second mounting portion on each of its opposite sides in the second direction. The second mounting portion is recessed in the direction away from the first combustion module 10. The combustion chamber 14 has a third flange 141 with a second first mounting portion 1118 on each of its opposite sides in the second direction. The second first mounting portion 1118 is recessed in the direction away from the first combustion module 10. The second mounting portion and the second first mounting portion 1118 together enclose a storage space for the second flange 1012. The shape of the storage space matches the shape of the second flange 1012 so as to fit the second flange 1012. In addition, the main housing 15, the combustion assembly and the combustion chamber 14 are sealed with glass fiber or high-temperature resistant silicone to ensure the sealing of the connection between the main housing 15, the first combustion module 10 and the combustion chamber 14.

[0139] In some embodiments, the third flange 141 is the portion of the cooling member 131 that extends out of the plate 101 in the second direction. That is, the second mounting portion and the second first mounting portion 1118 together enclose a receiving space for receiving the cooling member 131. The shape of the receiving space matches the shape of the cooling member 131 so as to fit against the outer wall of the cooling member 131. The combustion assembly is fixedly mounted between the main housing 15 and the combustion chamber 14 via the cooling member 131.

[0140] In some embodiments, the combustion system includes a gas supply device, which includes a first ventilation component, a second ventilation component, and a third ventilation component. The first ventilation component is connected to the second combustion module 11, and the second and third ventilation components are both connected to the air duct 151.

[0141] The third venting assembly is used to transport one of the fuel gas and the combustion-supporting gas, while the first venting assembly and the second venting assembly are used to transport the other of the fuel gas and the combustion-supporting gas, and at least one of the first venting assembly and the second venting assembly can be connected.

[0142] Understandably, when the combustion device 100 is in premixed combustion mode, the second ventilation component is controlled to introduce one of the combustion-supporting gas and the fuel gas into the air duct 151, and the third ventilation component is controlled to introduce the other of the combustion-supporting gas and the fuel gas into the air duct 151. During the flow of the combustion-supporting gas and the fuel gas in the air duct 151, they will be fully mixed to form a mixed gas. The mixed gas flows through the spaced flow channel and the flow gap 1022 between the main body 111 and the plate 101 in sequence, and then flows to the outlet end of the air guide channel 1021, so that it finally flows into the combustion chamber 14 and then flows out through the outlet end of the first air guide channel 1021 into the combustion chamber 14. It is then ignited by the electric spark in the combustion chamber 14, thereby realizing premixed combustion in the combustion chamber 14.

[0143] When the combustion device is in diffusion combustion mode, the second ventilation component is controlled to introduce combustion-supporting gas into the air duct 151, which will flow from the flow gap 1022 to the outlet end of the air guide channel 1021. At the same time, the first ventilation component is controlled to introduce fuel gas into the airflow distribution mechanism 12. The fuel gas will pass through the collection chamber of the airflow distribution mechanism 12, the distribution channel of the airflow distribution mechanism 12 connecting part 121, the air passage 1111 and the flow passage 1121 in sequence, and finally flow to the outlet end of the air guide channel 1021. In this way, the fuel gas and combustion-supporting gas located at the outlet end of the air guide channel 1021 will come into brief contact and flow together into the combustion chamber 14, and then be ignited by the electric spark in the combustion chamber 14, thereby realizing diffusion combustion in the combustion chamber 14.

[0144] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0145] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A combustion assembly, characterized in that, The first combustion module includes a plate and a first combustion structure. The plate has a through-hole for mounting. The first combustion structure is fitted into the mounting hole and has the gas guide channel inside the first combustion structure. The air inlet of the air guide channel is used to connect with the first air source, and the air outlet of the air guide channel is used to connect with the combustion chamber.

2. The combustion assembly according to claim 1, characterized in that, The number of plates is at least two, and the plates are parallel to each other and spaced apart. Each plate has a through-hole, and the mounting holes on each plate are aligned one by one. The mounting holes aligned along the first direction together form a mounting hole group, and the first combustion structure is correspondingly matched with a mounting hole group.

3. The combustion assembly according to claim 2, characterized in that, It also includes a second combustion module, which includes a main body and a second combustion structure disposed on the main body. An air passage is formed in the main body, and a flow passage communicating with the air passage is formed in the second combustion structure. The first combustion module is disposed on the side of the second combustion module near the combustion chamber, and the flow passage is connected to the combustion chamber, and the gas passage is connected to the second gas source.

4. The combustion assembly according to claim 3, characterized in that, The second combustion structure is at least partially nested within a corresponding gas guide channel, and a flow gap is formed between the outer wall of the second combustion structure and the inner wall of the gas guide channel, and the gas guide channel is connected to the first gas source through the flow gap.

5. The combustion assembly according to claim 4, characterized in that, The main body includes a third plate and a cover that are connected to each other. The third plate has a first surface and a second surface that are opposite each other. The second combustion structure protrudes from the first surface, and the second surface is recessed toward the first surface to form an air passage groove. The cover is placed over the opening of the air passage groove and forms the air passage channel.

6. The combustion assembly according to claim 5, characterized in that, The third plate is provided with a connecting part, and the cover is provided with a first mating part that mates with the connecting part. When the connecting part mates with the first mating part, the cover covers the opening of the air passage.

7. The combustion assembly according to claim 5, characterized in that, The second combustion structure is integrally formed with the third plate.

8. The combustion assembly according to claim 5, characterized in that, It also includes an airflow distribution mechanism, which is connected to the second combustion module, with one end of the airflow distribution mechanism connected to the air passage and the other end connected to the second air source.

9. The combustion assembly according to claim 8, characterized in that, The cover has a vent. When the cover is placed on the third plate, the vent is connected to the air passage, and the airflow distribution mechanism is connected to the cover and is connected to the vent.

10. The combustion assembly according to claim 9, characterized in that, The airflow distribution mechanism has at least one connecting portion protruding from the side of the cover. An airflow collection cavity is formed inside the airflow distribution mechanism. Each connecting portion has a distribution channel that communicates with the airflow collection cavity. Each connecting portion is correspondingly connected to the cover and communicates with the corresponding air vent.

11. The combustion assembly according to claim 4, characterized in that, When there is only one plate, the main body is located on the side of the plate away from the combustion chamber. Either the main body or the plate has a mounting portion protruding towards the other, and the other has a second mating portion that engages with the mounting portion; or When the number of plates is at least two, the plate that is furthest from the combustion chamber is defined as the first plate. The main body is disposed on the side of the first plate away from the combustion chamber. Either the main body or the first plate is provided with a mounting part protruding toward the other, and the other is provided with a second mating part that mates with the mounting part.

12. The combustion assembly according to claim 4, characterized in that, The number of the first combustion structure corresponds one-to-one with the number of the second combustion structure.

13. The combustion assembly according to claim 4, characterized in that, All of the first combustion structures are arranged in at least one row along the second direction, and / or all of the first combustion structures are arranged in at least one column along a third direction intersecting the second direction; and / or All of the second combustion structures are arranged along the second direction to form at least one row, and / or all of the second combustion structures are arranged along a third direction intersecting the second direction to form at least one column.

14. The combustion assembly according to claim 13, characterized in that, All the second combustion structures are arranged along the second direction to form at least one row of second combustion groups, and the number of the gas passages corresponds one-to-one with the number of the at least one row of second combustion groups; or All the second combustion structures are arranged along a third direction intersecting the second direction to form at least one column of second combustion groups, and the number of the gas passages corresponds one-to-one with the number of the at least one column of second combustion groups.

15. The combustion assembly according to claim 1, characterized in that, It also includes a cooling unit, which includes cooling components, each of which has a cooling channel for the flow of cooling fluid. When there is only one plate, the cooling component is located on the side of the plate away from the combustion chamber and is positioned away from each of the first combustion structures; or When the number of plates is at least two, the cooling components are all disposed between any two plates and are positioned away from each of the first combustion structures.

16. The combustion assembly according to claim 15, characterized in that, All of the first combustion structures are arranged along the second direction to form at least one row of first combustion groups, and / or all of the first combustion structures are arranged along a third direction intersecting the second direction to form at least one column of first combustion groups; The cooling element and the at least one row of the first combustion group are arranged alternately along the third direction, and / or the cooling element and the at least one column of the first combustion group are arranged alternately along the second direction.

17. A combustion device, characterized in that, The device includes a combustion assembly, a combustion chamber, and a main housing with an air duct as described in any one of claims 1-16, wherein the combustion chamber is connected to the main housing and located outside the air duct, the combustion chamber has a combustion chamber communicating with the air guide passage, and the combustion device is connected to one end of the main housing and is at least partially located within the air duct.

18. The combustion device according to claim 17, characterized in that, The edges of the main housing, the first combustion module, and the combustion chamber are stacked, and the edges of the main housing and the combustion chamber are fixed by fasteners, so that the combustion assembly is fixed between the main housing and the combustion chamber.

19. A combustion system, characterized in that, Including the combustion device as described in any one of claims 17 to 18.

20. The combustion system according to claim 19, characterized in that, The combustion system includes a gas supply device, which includes a first ventilation component, a second ventilation component, and a third ventilation component. The first ventilation component is connected to the second combustion module, and both the second ventilation component and the third ventilation component are connected to the air duct. The third ventilation component is used to transport one of the fuel gas and the combustion-supporting gas, and the first ventilation component and the second ventilation component are respectively used to transport the other of the fuel gas and the combustion-supporting gas, and at least one of the first ventilation component and the second ventilation component can be connected.

21. A combustion device, characterized in that, Includes the combustion system as described in any one of claims 19 to 20.

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