Combustor, combustion system and gas equipment
By designing a combustion module with the first and second combustion channels, the problem that the existing burners cannot adapt to the multi-working thermal load requirements is solved, and the flame stability and combustion efficiency are improved, while reducing the generation of exhaust gas.
Patent Information
- Application Number
- CN202311822379.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-06-27
AI Technical Summary
In the existing fully premixed gas water heater, after the power of the burner is adjusted, the combustion flame is unstable, the mixing ratio of air and gas cannot meet the usage needs well, and it cannot adapt to the thermal load needs of multiple operating conditions.
A burner is designed, including a combustion module having a first combustion channel and a second combustion channel, and the second combustion channel is arranged around the outer periphery of the first combustion channel and coaxially therewith. The combustion module has a first combustion state and a second combustion state, and in different states, the output of different fuel gases and combustion-assisted gases is ensured to ensure sufficient combustion at each aperture.
Through this design, different combustion needs can be met at the same time and the scope of application of combustion modules can be improved. When the heat load demand is small, backfire is avoided and the combustion efficiency is high; when the heat load demand is large, waste gas generation can be effectively reduced.
Smart Images
Figure CN120212489A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of combustion equipment, and particularly to a burner, a combustion system, and a gas equipment. Background Art
[0002] The full-premix combustion technology has been widely applied to gas heating furnaces and gas burners. However, in existing full-premix gas water heaters, after the power of the burner is adjusted, the combustion flame is unstable, and the mixing ratio of air and gas cannot well meet the usage requirements, and cannot adapt to the heat load requirements of multiple working conditions. Summary of the Invention
[0003] Based on this, in view of the problem that the existing burner cannot adapt to the heat load requirements of multiple working conditions, it is necessary to provide a burner, a combustion system, and a gas equipment.
[0004] A burner includes a combustion module. The burner has a first combustion duct and a second combustion duct. The second combustion duct is disposed around the outer periphery of the first combustion duct and is coaxially arranged with the first combustion duct. Wherein, the combustion module has a first combustion state and / or a second combustion state. In the first combustion state, one of fuel gas and combustion-supporting gas is output from the first combustion duct, and the other of fuel gas and combustion-supporting gas is output from the second combustion duct. In the second combustion state, a mixture of fuel gas and combustion-supporting gas is output from the first combustion duct or the second combustion duct.
[0005] For the above burner, the second combustion duct is disposed around the outer periphery of the first combustion duct and is coaxially arranged with the first combustion duct. The gas ejected from the first combustion duct can be surrounded by the gas ejected from the second combustion duct, ensuring that sufficient combustion can occur at each duct. The same combustion module can simultaneously meet different combustion requirements, improving the applicable range of the combustion module. When the heat load demand is small, the first combustion state is turned on, and the gas can be evenly distributed around the first combustion duct, not easily causing flashback and having high combustion efficiency. When the heat load demand is large, the second combustion state is turned on, which can effectively reduce the generation of waste gas.
[0006] In one embodiment, the burner further includes a first gas delivery channel and a second gas delivery channel. The first gas delivery channel is communicated with the first combustion duct, and the second gas delivery channel is communicated with the second combustion duct. In the first combustion state, one of fuel gas and combustion-supporting gas is input from the first gas delivery channel, and the other of fuel gas and combustion-supporting gas is input from the second gas delivery channel. In the second combustion state, a mixture of fuel gas and combustion-supporting gas is input from the second gas delivery channel.
[0007] In one embodiment, the burner further includes a distribution module, which is disposed upstream of the combustion module and is used to divert the gas in the first gas transmission channel to the first combustion channel.
[0008] In one embodiment, the combustion module includes a first main body and a second main body. An avoidance channel is provided in the second main body. One part of the first main body is inserted into the avoidance channel and the other part is inserted into one end of the flow dividing member. The gap between the outer wall of the first main body and the inner wall of the avoidance channel forms the second combustion channel, and the first combustion channel is formed inside the first main body.
[0009] In one embodiment, the first main body and the second main body are of an integral structure.
[0010] In one embodiment, the first main body includes a first section and a second section connected to each other. The first section is inserted into the avoidance channel, and at least part of the second section is inserted into one end of the distribution module.
[0011] In one embodiment, the distribution module includes a first distribution member and a second distribution member. At least part of the second section is inserted into one end of the second distribution member. The other end of the second distribution member is communicated with the first gas transmission channel, and the first gas transmission channel is formed inside the first distribution member.
[0012] In one embodiment, a total channel and a flow dividing channel are formed inside the second distribution member. One end of the flow dividing channel is communicated with the first combustion channel, and the other end of the flow dividing channel and the first gas transmission channel are communicated by the total channel.
[0013] In one embodiment, the second distribution member includes a connecting member and a flow dividing member provided on the connecting member. The total channel is formed inside the connecting member, the flow dividing channel is formed inside the flow dividing member, and at least part of the first combustion channel is inserted into one end of the flow dividing member.
[0014] In one embodiment, a guiding groove is provided at one end of the flow dividing member, and the guiding groove is in plug-in fit with the second section.
[0015] In one embodiment, a positioning portion is provided at one end of the flow dividing member, a positioning groove is provided at one end of the second section facing the flow dividing member, and the positioning portion is in plug-in fit with the positioning groove.
[0016] In one embodiment, the connecting member and the second main body are spaced apart to form the second gas transmission channel.
[0017] In one embodiment, the number of the first combustion channels is at least two, and each of the first combustion channels is arranged in the same direction to form a row combustion zone, and the number of the connecting members corresponds to the number of the row combustion zones one by one.
[0018] In one embodiment, at least two of the shunt members are provided on each of the connecting members, and the number of the shunt members corresponds to the number of the first combustion channels one by one.
[0019] In one embodiment, the burner further includes a premixing channel and a gas supply channel. The first gas transmission channel is communicated with the gas supply channel, and the second gas transmission channel is also communicated with the gas supply channel. Wherein, the premixing channel is used for inputting a mixture of fuel gas and combustion-supporting gas; or, the premixing channel is used for inputting one of the fuel gas and the combustion-supporting gas, and the gas supply channel is used for inputting the other of the fuel gas and the combustion-supporting gas.
[0020] A combustion system includes the above-mentioned burner.
[0021] The above-mentioned combustion system can simultaneously meet different combustion requirements and improve the applicable range of the combustion system; when the heat load demand is small, the first combustion state is turned on, and flashback is not likely to occur; when the heat load demand is large, the second combustion state is turned on, and the generation of waste gas can be effectively reduced.
[0022] A gas equipment includes the above-mentioned combustion system.
[0023] For the above-mentioned gas equipment, the combustion system can simultaneously meet different combustion requirements and improve the applicable range of the combustion system; when the heat load demand is small, the first combustion state is turned on, and flashback is not likely to occur; when the heat load demand is large, the second combustion state is turned on, and the generation of waste gas can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of a burner in one embodiment.
[0025] Figure 2 It is Figure 1 An exploded view of a combustion module and a distribution module in the shown burner.
[0026] Figure 3 It is Figure 2 A top view of the shown combustion module.
[0027] Figure 4 It is Figure 3 A sectional view of the A-A plane of the shown combustion module.
[0028] Figure 5 It is Figure 2 A top view of the shown distribution module.
[0029] Figure 6 As shown in Figure 5 the sectional view of the B - B surface of the distribution module.
[0030] Figure 7 As shown in Figure 2 the combined sectional view of the combustion module and the distribution module.
[0031] Reference numerals:
[0032] 100, burner; 101, first combustion channel; 102, second combustion channel; 103, first gas transmission channel; 104, second gas transmission channel; 110, combustion module; 111, first main body; 111a, first section; 111b, second section; 111c, positioning groove; 112, second main body; 120, distribution module; 121, first distribution part; 122, second distribution part; 122a, main channel; 122b, shunt channel; 123, connecting piece; 124, shunt part; 124a, guiding groove; 124b, positioning part. Detailed implementation manners
[0033] To make the above - mentioned objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.
[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0036] In this application, unless otherwise clearly defined and limited, terms such as "initial", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0037] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.
[0038] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.
[0039] Please refer to Figure 1 and Figure 2 , the burner 100 in an embodiment includes a combustion module 110, the combustion module 110 has a first combustion duct 101 and a second combustion duct 102, and the second combustion duct 102 surrounds the outer periphery of the first combustion duct 101 and is coaxially arranged with the first combustion duct 101.
[0040] Among them, the burner 100 has a first combustion state and / or a second combustion state. In the first combustion state, one of the fuel gas and the combustion-supporting gas is output from the first combustion duct 101, and the other of the fuel gas and the combustion-supporting gas is output from the second combustion duct 102; in the second combustion state, a mixture of the fuel gas and the combustion-supporting gas is output from the first combustion duct 101 or the second combustion duct 102.
[0041] For example, in the first combustion state of the burner 100, one of the fuel gas and the combustion-supporting gas is ejected from the first combustion duct 101, and the other of the fuel gas and the combustion-supporting gas is ejected from the second combustion duct 102. At this time, it is diffusion combustion, which can ensure stable flame during diffusion combustion; in the second combustion state of the burner 100, one of the first combustion duct 101 and the second combustion duct 102 does not eject gas, and the mixture of the fuel gas and the combustion-supporting gas is ejected from the other of the first combustion duct 101 and the second combustion duct 102. At this time, it is premixed combustion, which can shorten the flame length during premixed combustion and achieve stable combustion.
[0042] In addition, when the heat load demand is small, the first combustion state (i.e., diffusion combustion) is turned on, and flashback is not likely to occur and the combustion efficiency is high; when the heat load demand is large, the second combustion state (i.e., premixed combustion) is turned on, which can effectively reduce the generation of waste gas. Or, the first combustion state and the second combustion state can be turned on, and at this time, there is both diffusion combustion and premixed combustion.
[0043] Optionally, the fuel gas is a combustible gas such as natural gas or coal gas, and the combustion-supporting gas is a gas such as air or oxygen that can participate in combustion and act as an oxidant.
[0044] For the above-mentioned combustion module 110, the second combustion duct 102 surrounds the outer periphery of the first combustion duct 101 and is coaxially arranged with the first combustion duct 101. The gas ejected from the first combustion duct 101 can be surrounded by the gas ejected from the second combustion duct 102, ensuring that sufficient combustion can occur at each duct. The same combustion module 110 can simultaneously meet different combustion requirements, improving the applicable range of the combustion module 110; when the heat load demand is small, the first combustion state is turned on, and the gas can be evenly distributed around the first combustion duct 101, and flashback is not likely to occur and the combustion efficiency is high; when the heat load demand is large, the second combustion state is turned on, which can effectively reduce the generation of waste gas.
[0045] Please refer to Figures 5 to 7 , the burner 100 further includes a first gas transmission channel 103 and a second gas transmission channel 104. The first gas transmission channel 103 is communicated with the first combustion duct 101, and the second gas transmission channel 104 is communicated with the second combustion duct 102. In the first combustion state, one of the fuel gas and the combustion-supporting gas is input through the first gas transmission channel 103, and the other of the fuel gas and the combustion-supporting gas is input through the second gas transmission channel 104; in the second combustion state, the mixture of the fuel gas and the combustion-supporting gas is input through the second gas transmission channel 104.
[0046] It should be noted that the first gas transmission channel 103 and the second gas transmission channel 104 are respectively used to convey gas to the first combustion channel 101 and the second combustion channel 102. That is to say, the first gas transmission channel 103 and the second gas transmission channel 104 are respectively connected to different gas sources, and the two are not connected to each other and independently conduct gas transmission.
[0047] Among them, the first gas transmission channel 103 and the first combustion channel 101 form a first combustion system, and the second gas transmission channel 104 and the second combustion channel 102 form a second combustion system. Users can selectively turn on the first combustion system and the second combustion system according to the heat load demand to achieve different combustion states (such as premixed combustion or diffusion combustion, etc.), so as to perform different types of combustion using different combustion systems.
[0048] For example, when the heat load is small, turn on the first combustion state, and at the same time turn on the first combustion system and the second combustion system. One of the fuel gas and the combustion-supporting gas is ejected from the first combustion channel 101, and the other of the fuel gas and the combustion-supporting gas is ejected from the second combustion channel 102. After the fuel gas and the combustion-supporting gas are mixed in the combustion module 110, they are ignited by the ignition needle and burned, and stable flame combustion can be achieved;
[0049] When the heat load is large, turn on the second combustion state, and only turn on the second combustion system. The fuel gas and the combustion-supporting gas are premixed and ejected from the first combustion channel 101 or the second combustion channel 102, and the mixture is ignited by the ignition needle and burned, so as to achieve full combustion, high combustion efficiency, and less waste gas generated.
[0050] Please refer to Figures 5 to 7 , the burner 100 further includes a distribution module 120, and the distribution module 120 is arranged upstream of the combustion module 110 and is used to split the gas in the first gas transmission channel 103 to the first combustion channel 101. In this way, the gas input from the first gas transmission channel 103 can be input into the distribution module 120 and split to the first combustion channel 101 through the distribution module 120.
[0051] It can be understood that the distribution module 120 is arranged upstream of the combustion module 110, which means that: along the gas flow direction, after the gas flows to the distribution module 120, it then flows through the combustion module 110.
[0052] Please refer to Figure 4 and Figure 3 , the combustion module 110 includes a first main body 111 and a second main body 112. An avoidance channel is arranged inside the second main body 112. A part of the first main body 111 is inserted into the avoidance channel and the other part is inserted into one end of the flow splitting member 124. The gap between the outer wall of the first main body 111 and the inner wall of the avoidance channel forms the second combustion channel 102, and the first combustion channel 101 is formed inside the first main body 111.
[0053] It should be noted that the inner diameter of the avoidance channel should at least meet the requirement that after the first main body 111 is inserted into the avoidance channel, there is enough clearance between the outer wall of the first main body 111 and the inner wall of the avoidance channel, so as to reserve enough space for the second combustion channel 102.
[0054] In this embodiment, the avoidance channel is coaxially arranged with the first combustion channel 101, and the first combustion channel 101 penetrates through the middle of the first main body 111 along the thickness direction of the first main body 111, so as to facilitate the coaxial arrangement of the first combustion channel 101 and the second combustion channel 102.
[0055] Specifically in this embodiment, please refer to Figure 1 , the first main body 111 and the second main body 112 are of an integral structure. In this way, the coaxiality of the first combustion channel 101 and the second combustion channel 102 can be better guaranteed.
[0056] Please refer to Figure 4 and Figure 7 , the first main body 111 includes a connected first section 111a and a second section 111b. The first section 111a is inserted into the avoidance channel, and the second section 111b is at least partially inserted into one end of the distribution module 120.
[0057] Specifically, the first section 111a and the second section 111b are connected in sequence along the axis direction of the first main body 111. The first section 111a is inserted into the avoidance channel, and there is a clearance between the outer wall of the first section 111a and the inner wall of the avoidance channel. The second section 111b is exposed outside the avoidance channel, and the second section 111b is at least partially inserted into one end of the distribution module 120.
[0058] Please refer to Figure 7 , the distribution module 120 includes a first distribution member 121 and a second distribution member 122. The second section 111b is at least partially inserted into one end of the second distribution member 122. The other end of the second distribution member 122 is communicated with the first gas transmission channel 103. The first gas transmission channel 103 is formed in the first distribution member 121. The first gas transmission channel 103 is formed in the first distribution member 121.
[0059] Specifically, please refer to Figure 7 , a main channel 122a and a shunt channel 122b are formed in the second distribution member 122. One end of the shunt channel 122b is communicated with the first combustion channel 101, and the other end of the shunt channel 122b is communicated with the first gas transmission channel 103 through the main channel 122a.
[0060] In this embodiment, the first distributor 121 and the second distributor 122 are of a split structure and can be fixed by means such as welding and riveting. In other embodiments, the first distributor 121 and the second distributor 122 can also be of an integral structure, which has good integrity and is convenient for rapid assembly.
[0061] More specifically, please refer to Figure 5 and Figure 6 , the second distributor 122 includes a connecting member 123 and a flow dividing member 124 provided on the connecting member 123. A main channel 122a is formed in the connecting member 123, and a flow dividing channel 122b is formed in the flow dividing member 124. At least a part of the first combustion hole 101 is inserted into one end of the flow dividing member 124.
[0062] It can be understood that the gas in the first gas transmission channel 103 can be input into the main channel 122a in the connecting member 123 and output to the first combustion hole 101 through the flow dividing channel 122b in the flow dividing member 124. At least a part of the first combustion hole 101 is inserted into one end of the flow dividing member 124, which can make the first combustion hole 101 communicate with the flow dividing channel 122b and ensure the seal at the channel connection.
[0063] In this embodiment, the connecting member 123 and the flow dividing member 124 are of a split structure and can be fixed by means such as welding and riveting. In other embodiments, the connecting member 123 and the flow dividing member 124 can also be of an integral structure, which has good integrity and is convenient for rapid assembly.
[0064] Furthermore, please refer to Figure 7 , a guiding groove 124a is provided at one end of the flow dividing member 124, and the guiding groove 124a is in plug-in fit with the second section 111b.
[0065] It can be understood that by providing the guiding groove 124a at one end of the flow dividing member 124, it is possible to easily assemble the flow dividing member 124 of the distribution module 120 with the first main body 111 of the combustion module 110, and at the same time ensure that after the flow dividing member 124 and the first main body 111 are nested, the flow dividing channel 122b and the first combustion hole 101 are coaxial.
[0066] In this embodiment, the guiding groove 124a can be in a U shape, a C shape or other shapes. Here, the specific shape of the guiding groove 124a is not limited.
[0067] Even further, please refer to Figure 7 , a positioning portion 124b is provided at one end of the flow dividing member 124, and a positioning groove 111c is provided at one end of the second section 111b facing the flow dividing member 124. The positioning portion 124b is in plug-in fit with the positioning groove 111c.
[0068] It can be understood that by providing a positioning portion 124b at one end of the flow dividing member 124, the groove wall of the positioning groove 111c can sleeve the outer periphery of the flow dividing channel 122b, ensuring that there is no air leakage at the connection between the flow dividing channel 122b and the first combustion channel 101.
[0069] In this embodiment, the positioning portion 124b protrudes from the bottom wall of the guiding groove 124a. In other embodiments, the positioning portion 124b can also be provided at other positions of the guiding groove 124a.
[0070] In this embodiment, the positioning groove 111c can be U-shaped, C-shaped or other shapes. Here, the specific shape of the guiding groove 124a is not limited.
[0071] In this embodiment, please refer to Figure 7 , the connecting member 123 and the second main body 112 are spaced apart to form a second gas transmission channel 104.
[0072] In this embodiment, the connecting member 123 and the second main body 112 are spaced apart, which can be arranged at intervals along the Figure 7 Z direction shown in Figure 7 or arranged at intervals along the
[0073] Y direction shown in Figure 2 . The number of the first combustion channels 101 is at least two, and the first combustion channels 101 are arranged in the same direction to form a row combustion area, and the number of the connecting members 123 corresponds one-to-one to the number of the row combustion areas.
[0074] It should be noted that the first combustion channels 101 are arranged in the same direction, which can be understood as: the first combustion channels 101 are arranged along the length direction and / or the width direction of the combustion module 110, and can be arranged at equal intervals or unequal intervals. Among them, the length direction of the combustion module 110 is the Figure 2 X direction shown in Figure 2 , and the width direction of the combustion module 110 is the
[0075] Y direction shown in
[0076] In this embodiment, the number of the second combustion channels 102 is also at least two, and the second combustion channels 102 are arranged in one-to-one correspondence with the first combustion channels 101. Figure 2 Please refer to
[0077] Each connecting member 123 is provided with at least two flow dividing members 124, and the number of the flow dividing members 124 corresponds one-to-one to the number of the first combustion channels 101. In this way, it is beneficial to evenly divide the gas in the total channel 122a of the connecting member 123. Figure 2The burner 100 further includes a premixing channel and a gas supply channel. The first gas transmission channel 103 is connected to the gas supply channel, and the second gas transmission channel 104 is connected to the premixing channel. Among them, the premixing channel is used to input a mixture of fuel gas and combustion-supporting gas; or, the premixing channel is used to input one of the fuel gas and the combustion-supporting gas, and the gas supply channel is used to input the other of the fuel gas and the combustion-supporting gas.
[0078] It should be noted that the premixing channel and the gas supply channel are respectively used to supply gas to the first combustion orifice 101 and the second combustion orifice 102. That is to say, the premixing channel and the gas supply channel are respectively connected to different gas sources, and the two are not connected to each other and independently supply gas.
[0079] For example, in the first combustion state, the gas supply channel inputs one of the fuel gas and the combustion-supporting gas, and the premixing channel inputs the other of the fuel gas and the combustion-supporting gas; in the second combustion state, the premixing channel inputs a mixture of the fuel gas and the combustion-supporting gas.
[0080] Please refer to Figure 1 and Figure 2 A combustion system in an embodiment includes the above-mentioned burner 100.
[0081] Specifically, in addition to including the above-mentioned burner 100, the combustion system further includes other components such as a mixer, a gas supply component, and a control valve.
[0082] The above-mentioned combustion system can simultaneously meet different combustion requirements and improve the application range of the combustion system; when the heat load demand is small, the first combustion state is turned on, and flashback is not likely to occur; when the heat load demand is large, the second combustion state is turned on, and the generation of waste gas can be effectively reduced.
[0083] Please refer to Figure 1 and Figure 2 A gas equipment in an embodiment includes the above-mentioned combustion system.
[0084] Specifically, the gas equipment is a water heater or a wall-mounted boiler. In addition to including the above-mentioned combustion system, the gas equipment further includes other components such as a housing, a heat exchange system, a control system, and a detection system.
[0085] For the above-mentioned gas equipment, the combustion system can simultaneously meet different combustion requirements and improve the application range of the combustion system; when the heat load demand is small, the first combustion state is turned on, and flashback is not likely to occur; when the heat load demand is large, the second combustion state is turned on, and the generation of waste gas can be effectively reduced.
[0086] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0087] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.
Claims
1. A burner (100), characterized in that, Comprising: A combustion module (110) having a first combustion channel (101) and a second combustion channel (102), wherein the second combustion channel (102) is disposed around the outer periphery of the first combustion channel (101) and is coaxially arranged with the first combustion channel (101); Wherein, the burner (100) has a first combustion state and / or a second combustion state. In the first combustion state, one of the fuel gas and the combustion-supporting gas is output from the first combustion channel (101), and the other of the fuel gas and the combustion-supporting gas is output from the second combustion channel (102); in the second combustion state, a mixture of the fuel gas and the combustion-supporting gas is output from the first combustion channel (101) or the second combustion channel (102).
2. The burner (100) according to claim 1, characterized in that, The burner (100) further includes a first gas transmission channel (103) and a second gas transmission channel (104), the first gas transmission channel (103) is communicated with the first combustion channel (101), and the second gas transmission channel (104) is communicated with the second combustion channel (102); In the first combustion state, one of the fuel gas and the combustion-supporting gas is input from the first gas transmission channel (103), and the other of the fuel gas and the combustion-supporting gas is input from the second gas transmission channel (104); in the second combustion state, a mixture of the fuel gas and the combustion-supporting gas is input from the second gas transmission channel (104).
3. The burner (100) according to claim 2, characterized in that, The burner (100) further includes a distribution module (120), the distribution module (120) is disposed upstream of the combustion module (110) and is used for diverting the gas in the first gas transmission channel (103) to the first combustion channel (101).
4. The burner (100) according to claim 3, characterized in that, The combustion module (110) includes a first main body (111) and a second main body (112), the second main body (112) is provided with an avoidance channel, a part of the first main body (111) is inserted into the avoidance channel and another part is inserted into one end of the distribution module (120), and a gap between the outer wall of the first main body (111) and the inner wall of the avoidance channel forms the second combustion channel (102), and the first combustion channel (101) is formed inside the first main body (111).
5. The burner (100) according to claim 4, characterized in that, The first main body (111) and the second main body (112) are of an integral structure.
6. The burner (100) according to claim 4, characterized in that, The first main body (111) includes a first section (111a) and a second section (111b) connected to each other, the first section (111a) is inserted into the avoidance channel, and the second section (111b) is at least partially inserted into one end of the distribution module (120).
7. The burner (100) according to claim 6, characterized in that, The distribution module (120) includes a first distribution member (121) and a second distribution member (122), the second section (111b) is at least partially inserted into one end of the second distribution member (122), the other end of the second distribution member (122) is communicated with the first gas transmission channel (103), and the first gas transmission channel (103) is formed inside the first distribution member (121).
8. The burner (100) according to claim 7, characterized in that, A main channel (122a) and a shunt channel (122b) are formed in the second distributor (122). One end of the shunt channel (122b) communicates with the first combustion channel (101), and the other end of the shunt channel (122b) communicates with the first gas supply channel (103) through the main channel (122a).
9. The burner (100) according to claim 8, characterized in that, The second distributor (122) includes a connecting member (123) and a shunt member (124) provided on the connecting member (123). The main channel (122a) is formed in the connecting member (123), and the shunt channel (122b) is formed in the shunt member (124). At least a part of the first combustion channel (101) is inserted into one end of the shunt member (124).
10. The burner (100) according to claim 9, characterized in that, A guiding groove (124a) is provided at one end of the shunt member (124), and the guiding groove (124a) is in plug-in fit with the second section (111b).
11. The burner (100) according to claim 9, characterized in that, A positioning portion (124b) is provided at one end of the shunt member (124), and a positioning groove (111c) is provided at one end of the second section (111b) facing the shunt member (124). The positioning portion (124b) is in plug-in fit with the positioning groove (111c).
12. The burner (100) according to claim 9, characterized in that, The connecting member (123) and the second main body (112) are spaced apart to form the second gas supply channel (104).
13. The burner (100) according to claim 9, characterized in that, The number of the first combustion channels (101) is at least two. Each of the first combustion channels (101) is arranged in the same direction to form a row combustion zone, and the number of the connecting members (123) corresponds to the number of the row combustion zones one by one.
14. The burner (100) according to claim 9, characterized in that, At least two shunt members (124) are provided on each connecting member (123), and the number of the shunt members (124) corresponds to the number of the first combustion channels (101) one by one.
15. The burner (100) according to any one of claims 2-14, characterized in that, The burner (100) further includes a premixing channel and a gas supply channel. The first gas supply channel (103) communicates with the gas supply channel, and the second gas supply channel (104) communicates with the premixing channel; wherein, the premixing channel is used for inputting a mixture of fuel gas and combustion-supporting gas; or, the premixing channel is used for inputting one of fuel gas and combustion-supporting gas, and the gas supply channel is used for inputting the other of fuel gas and combustion-supporting gas.
16. A combustion system, characterized in that, Comprising the burner (100) according to any one of claims 1-15.
17. A gas device, characterized in that, Comprising the combustion system according to claim 16.