Combustor, combustion system and gas equipment

Abstract

The invention relates to a combustor, a combustion system and gas equipment, the combustor comprises a combustion module, the combustion module is provided with a first combustion hole channel, a second combustion hole channel and a cooling flow channel, the second combustion hole channel is arranged on the periphery of the first combustion hole channel in a surrounding mode, and the cooling flow channel, the first combustion hole channel and the second combustion hole channel are arranged in a staggered mode; wherein the combustor 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 through the first combustion pore channel, and the other of the fuel gas and the combustion-supporting gas is output through the second combustion pore channel; and in the second combustion state, mixed gas of the fuel gas and the combustion-supporting gas is output through the second combustion hole channel. The combustion system comprises the combustor. The gas equipment comprises the combustion system. According to the combustor, the combustion system and the fuel gas equipment, water enters the cooling flow channel and can exchange heat with the combustion module, the temperature of the combustor is reduced, and generation of N0x in smoke is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of combustion equipment, and in particular to a burner, a combustion system and a gas equipment. Background Art

[0002] Fully premixed combustion technology has been widely used in gas heating furnaces and gas burners. However, in existing fully premixed gas water heaters, after the power of the burner is adjusted, the combustion flame is unstable, the mixing ratio of air and gas cannot meet the use requirements well, it cannot adapt to the heat load requirements of multiple working conditions, and more NOx emissions are emitted in the flue gas. Summary of the invention

[0003] Based on this, it is necessary to provide a burner, a combustion system and a gas equipment to address the problem that the existing burners cannot adapt to the heat load requirements of multiple working conditions and have a large amount of NOx emissions in the flue gas.

[0004] A burner includes a combustion module, the combustion module has a first combustion channel, a second combustion channel and a cooling channel, the second combustion channel is arranged around the outer periphery of the first combustion channel, and the cooling channel is staggered with the first combustion channel and the second combustion channel; wherein the burner 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 channel, and the other of fuel gas and combustion-supporting gas is output from the second combustion channel; in the second combustion state, a mixture of a first combustible gas and a second combustible gas is output from the first combustion channel or the second combustion channel.

[0005] In the above-mentioned burner, the combustion module has a cooling flow channel, and cold water entering the cooling flow channel can exchange heat with the combustion module, reduce the temperature of the burner, and is beneficial to reduce the generation of NOx in the flue gas and improve the utilization rate of heat; the second combustion channel is arranged around the first combustion channel, and the gas ejected from the first combustion channel can be surrounded by the gas ejected from the second combustion channel, ensuring that each channel can be fully burned. The same combustion module can meet different combustion requirements at the same time, thereby improving the applicability 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 channel, which is not easy to produce backfire and has high combustion efficiency; when the heat load demand is large, the second combustion state is turned on, which can effectively reduce the generation of exhaust gas.

[0006] In one of the embodiments, the burner further includes a water connection pipe, which is connected to the combustion module and is used to connect the cooling channel with the cooling pipeline.

[0007] In one embodiment, the waterway connecting pipe includes a waterway joint, a main waterway pipe, and a waterway branch pipe. The waterway joint is used to connect the cooling pipeline to the main waterway pipe. One end of the main waterway pipe is connected to one end of the waterway branch pipe, and the other end of the waterway branch pipe is connected to the cooling flow channel.

[0008] In one embodiment, the number of the waterway connecting pipes is at least two. The cooling flow channel has a cooling inlet and a cooling outlet. The cooling inlet is connected to the waterway branch pipe of one of the waterway connecting pipes, and the cooling outlet is connected to the waterway branch pipe of another waterway connecting pipe.

[0009] In one embodiment, the number of the cooling flow channels is at least two. Each of the cooling flow channels is arranged at intervals in the same direction. The number of the waterway branch pipes of each of the waterway connecting pipes corresponds to the number of the cooling flow channels one by one.

[0010] In one embodiment, the waterway connecting pipe and the combustion module are of an integral structure.

[0011] In one embodiment, the number of the first combustion orifices is at least two. Each of the first combustion orifices is arranged in the same direction and forms at least two row combustion zones. At least one of the cooling flow channels is provided between two adjacent row combustion zones.

[0012] In one embodiment, the second combustion orifice is coaxially arranged with the first combustion orifice.

[0013] In one embodiment, the burner further includes a first gas transmission channel and a second gas transmission channel. The first gas transmission channel is connected to the first combustion orifice, and the second gas transmission channel is connected to the second combustion orifice. In the first combustion state, one of the fuel gas and the combustion-supporting gas is input through the first gas transmission channel, and the other of the fuel gas and the combustion-supporting gas is input through the second gas transmission channel. In the second combustion state, the mixture of the fuel gas and the combustion-supporting gas is input through the second gas transmission channel.

[0014] In one embodiment, the burner further includes a distribution module. The distribution module is arranged upstream of the combustion module and is used to split the gas in the first gas transmission channel to the first combustion orifices.

[0015] In one embodiment, the combustion module includes a first main body and a second main body. An avoidance channel and the cooling flow channel are arranged in the second main body. A part of the first main body is inserted into the avoidance channel and another part is inserted into one end of the distribution module. The gap between the outer wall of the first main body and the inner wall of the avoidance channel forms the second combustion orifice, and the first combustion orifice is formed in the first main body.

[0016] In one embodiment, the first body and the second body are of an integral structure.

[0017] In one embodiment, the distribution module includes a first distribution member and a second distribution member. At least a part of the first body 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 in the first distribution member.

[0018] In one embodiment, a main channel and a diversion channel are formed in the second distribution member. One end of the diversion channel is communicated with the first combustion hole channel, and the other end of the diversion channel is communicated with the first gas transmission channel through the main channel.

[0019] In one embodiment, the second distribution member includes a connecting member and a diversion member provided on the connecting member. The main channel is formed in the connecting member, the diversion channel is formed in the diversion member, and at least a part of the first combustion hole channel is inserted into one end of the diversion member.

[0020] In one embodiment, the connecting member and the second body are arranged at intervals to form the second gas transmission channel.

[0021] In one embodiment, the number of the first combustion hole channels is at least two, and each of the first combustion hole 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.

[0022] In one embodiment, at least two of the diversion members are provided on each of the connecting members, and the number of the diversion members corresponds to the number of the first combustion hole channels one by one.

[0023] 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 communicated 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.

[0024] A combustion system includes the above-mentioned burner. For the above-mentioned combustion system, the combustion module has a cooling flow channel. When cold water enters the cooling flow channel, it can exchange heat with the combustion module, reduce the temperature of the burner, which is beneficial to reducing the generation of NOx in the flue gas and improving the utilization rate of heat; the same combustion module can simultaneously meet different combustion requirements and improve the application range of the combustion module.

[0025] A gas equipment includes the above combustion system. In the above gas equipment, cold water enters the cooling flow path and can exchange heat with the combustion module, reducing the temperature of the burner, which is beneficial to reducing the generation of NOx in the flue gas and improving the heat utilization rate; the same combustion module can simultaneously meet different combustion requirements, expanding the applicable range of the combustion module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a burner in an embodiment.

[0027] Figure 2 For Figure 1 an explosion view of the shown burner.

[0028] Figure 3 For Figure 1 a sectional view of the shown burner.

[0029] Figure 4 For Figure 1 a schematic diagram of the waterway connecting pipe in the shown burner.

[0030] Figure 5 For Figure 1 a top view of the combustion module in the shown burner.

[0031] Figure 6 For Figure 5 a sectional view taken along the line A-A of the shown combustion module.

[0032] Figure 7 For Figure 1 a top view of the distribution module in the shown burner.

[0033] Figure 8 For Figure 5 a sectional view taken along the line B-B of the shown distribution module.

[0034] REFERENCE MARKS:

[0035] 100, combustion module; 101, first combustion channel; 102, second combustion channel; 103, cooling flow path; 104, first gas transmission channel; 105, second gas transmission channel; 110, first main body; 120, second main body; 121, avoidance channel; 200, waterway connecting pipe; 210, waterway joint; 220, waterway main pipe; 230, waterway branch pipe; 300, distribution module; 310, first distribution member; 320, second distribution member; 320a, main channel; 320b, shunt channel; 321, connecting member; 322, shunt member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To make the above objects, features, and advantages of the present application more obvious and understandable, the following provides a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of 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 spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0037] 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. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, 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 and clearly defined.

[0039] In the present application, unless otherwise clearly specified and limited, terms such as "initial", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0042] Please refer to Figures 1 to 3 The burner in one embodiment includes a combustion module 100, and the combustion module 100 has a first combustion channel 101, a second combustion channel 102 and a cooling channel 103. The second combustion channel 102 is arranged around the outer periphery of the first combustion channel 101, and the cooling channel 103 is staggered with the first combustion channel 101 and the second combustion channel 102.

[0043] In which, the burner 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 outputted from the first combustion channel 101, and the other of the fuel gas and the combustion-supporting gas is outputted from the second combustion channel 102; in the second combustion state, a mixture of the fuel gas and the combustion-supporting gas is outputted from the first combustion channel 101 or the second combustion channel 102.

[0044] It should be noted that the burner is applied to the combustion system, and the combustion system also includes a heat exchanger, and the heat exchanger is connected to the burner through a pipeline. When the burner is in the first combustion state and / or the second combustion state, cold water will enter the cooling channel 103, and the cold water in the cooling channel 103 will heat up after the first heat exchange with the combustion module 100, and the heated water will flow from the cooling channel 103 to the heat exchanger, and will heat up to the required temperature after the second heat exchange in the heat exchanger for use by the user.

[0045] In addition, when the burner is in the first combustion state, 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. This is diffusion combustion, which can ensure flame stability during diffusion combustion; when the burner is in the second combustion state, one of the first combustion channel 101 and the second combustion channel 102 does not spray gas, and the mixture of fuel gas and combustion-supporting gas is ejected from the other of the first combustion channel 101 and the second combustion channel 102. This is premixed combustion, which can shorten the flame length during premixed combustion and achieve stable combustion.

[0046] In addition, when the heat load demand is small, the first combustion state (i.e., diffusion combustion) is turned on, which is not easy to cause flashback and has high combustion efficiency; 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. Alternatively, the first combustion state and the second combustion state can be turned on, in which case there is both diffusion combustion and premixed combustion.

[0047] 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.

[0048] For the above burner, the combustion module 100 has a cooling channel 103. Cold water entering the cooling channel 103 can exchange heat with the combustion module 100, reducing the temperature of the burner, facilitating the reduction of NOx generation in the flue gas, and improving the utilization rate of heat. The second combustion orifice 102 surrounds the outer periphery of the first combustion orifice 101, and the gas ejected from the first combustion orifice 101 can be surrounded by the gas ejected from the second combustion orifice 102, ensuring that sufficient combustion can occur at each orifice. The same combustion module 100 can simultaneously meet different combustion requirements, expanding the applicable range of the combustion module 100. 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 orifice 101, 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.

[0049] Specifically, please refer to Figure 2 The burner further includes a water connection pipe 200, which is connected to the combustion module 100 and is used to connect the cooling channel 103 with the cooling pipeline.

[0050] It can be understood that the water connection pipe 200 is used to connect the cooling channel 103 with the cooling pipeline. The cooling pipeline includes a first pipeline connected to an external water supply mechanism and a second pipeline connected to a heat exchanger. The external water supply mechanism is used to supply cold water, and the heat exchanger is used to communicate with the burner. In this way, the cold water supplied by the external water supply mechanism can flow into the cooling channel 103 through the first pipeline, and after being output from the cooling channel 103 to the second pipeline, it flows to the heat exchanger.

[0051] More specifically, please refer to Figure 4 and Figure 2 The water connection pipe 200 includes a water joint 210, a water main pipe 220, and a water branch pipe 230. The water joint 210 is used to connect the cooling pipeline with the water main pipe 220. One end of the water main pipe 220 is connected to one end of the water branch pipe 230, and the other end of the water branch pipe 230 is connected to the cooling channel 103.

[0052] It should be noted that the waterway joint 210 connects the cooling pipeline with the main waterway 220. That is, the water in the cooling pipeline can first flow into the main waterway 220 through the waterway joint 210, then be branched from the main waterway 220 into the waterway branch 230, and then flow from the waterway branch 230 to the cooling channel 103.

[0053] In this embodiment, the waterway joint 210, the main waterway 220 and the waterway branch 230 are of an integral structure, with good integrity and high mechanical strength. In other embodiments, the waterway joint 210, the main waterway 220 and the waterway branch 230 can also be of a split structure.

[0054] Please refer to Figure 2 , the number of the waterway connecting pipes 200 is at least two. The cooling channel 103 has a cooling inlet and a cooling outlet. The cooling inlet is connected to the waterway branch 230 of one waterway connecting pipe 200, and the cooling outlet is connected to the waterway branch 230 of another waterway connecting pipe 200.

[0055] For example, the cooling inlet is connected to the waterway branch 230 of one waterway connecting pipe 200, and the cooling outlet is connected to the waterway branch 230 of another waterway connecting pipe 200. That is, the water in the cooling pipeline can first flow into the main waterway 220 through the waterway joint 210, then be branched from the main waterway 220 into the waterway branch 230 of one waterway connecting pipe 200, and then flow into the cooling channel 103 for heat exchange through the cooling inlet. The water after heat exchange flows from the cooling outlet to the waterway branch 230 of another waterway connecting pipe 200. In this way, it can prevent the water before and after heat exchange from interfering with each other after the cold water flows into the cooling channel 103 for heat exchange through one waterway connecting pipe 200 and then is output through another waterway connecting pipe 200.

[0056] In this embodiment, the sizes and shapes of all the waterway connecting pipes 200 are exactly the same. In other embodiments, the sizes and shapes of all the waterway connecting pipes 200 can also be different.

[0057] Please refer to Figure 2 , the number of the cooling channels 103 is at least two. The cooling channels 103 are arranged at intervals in the same direction. The number of the waterway branches 230 of each waterway connecting pipe 200 corresponds to the number of the cooling channels 103 one by one. In this way, the heat exchange efficiency can be improved.

[0058] In this embodiment, please refer to Figure 2 , the waterway connecting pipe 200 and the combustion module 100 are of an integral structure. In this way, the integrity of the waterway connecting pipe 200 and the combustion module 100 is good, and it is beneficial to reduce the risk of water leakage.

[0059] Specifically, please refer to Figure 5 and Figure 6, 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 and forms at least two row combustion zones. At least one cooling channel 103 is provided between two adjacent row combustion zones. In this way, the space utilization rate of the combustion module 100 can be improved.

[0060] It should be noted that each of the first combustion channels 101 is arranged in the same direction, which can be understood as: each of the first combustion channels 101 is arranged along the length direction and / or the width direction of the combustion module 100, and can be arranged at equal intervals or unequal intervals. Among them, the length direction of the combustion module 100 is Figures 5 to 6 the X direction shown, and the width direction of the combustion module 100 is Figures 5 to 6 the Y direction shown.

[0061] 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.

[0062] Please refer to Figure 2 and Figure 3 , the second combustion channels 102 are coaxially arranged with the first combustion channels 101.

[0063] It can be understood that the second combustion channels 102 surround the outer periphery of the first combustion channels 101. The gas ejected from the first combustion channels 101 can be surrounded by the gas ejected from the second combustion channels 102. By arranging the second combustion channels 102 coaxially with the first combustion channels 101, the gas ejected from the second combustion channels 102 can be more evenly surrounded by the outer periphery of the gas ejected from the first combustion channels 101, ensuring that sufficient combustion can occur at each channel.

[0064] Please refer to Figure 3 , the burner further includes a first gas supply channel 104 and a second gas supply channel 105. The first gas supply channel 104 is communicated with the first combustion channels 101, and the second gas supply channel 105 is communicated with the second combustion channels 102. In the first combustion state, one of the fuel gas and the combustion-supporting gas is input through the first gas supply channel 104, and the other of the fuel gas and the combustion-supporting gas is input through the second gas supply channel 105; in the second combustion state, the mixture of the fuel gas and the combustion-supporting gas is input through the second gas supply channel 105.

[0065] It should be noted that the first gas supply channel 104 and the second gas supply channel 105 are respectively used for supplying gas to the first combustion channels 101 and the second combustion channels 102. That is to say, the first gas supply channel 104 and the second gas supply channel 105 are respectively communicated with different gas sources, and the two are not communicated with each other and independently supply gas.

[0066] Among them, the first gas transmission channel 104 and the first combustion channel 101 form a first combustion system, and the second gas transmission channel 105 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.

[0067] 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 100, they are ignited by the ignition needle and burned, and stable flame combustion can be achieved.

[0068] 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.

[0069] Please refer to Figure 7 and Figure 8 , the burner further includes a distribution module 300. The distribution module 300 is arranged upstream of the combustion module 100 and is used to split the gas in the first gas transmission channel 104 to the first combustion channel 101. In this way, the gas input from the first gas transmission channel 104 can be input into the distribution module 300 and split to the first combustion channel 101 through the distribution module 300.

[0070] It can be understood that the distribution module 300 is arranged upstream of the combustion module 100, which means that: along the gas flow direction, after the gas flows to the distribution module 300, it then flows through the combustion module 100.

[0071] Please refer to Figure 6 and Figure 5 , the combustion module 100 includes a first main body 110 and a second main body 120. The second main body 120 is provided with an avoidance channel 121 and a cooling flow channel 103. A part of the first main body 110 is inserted into the avoidance channel 121 and another part is inserted into one end of the distribution module 300. The gap between the outer wall of the first main body 110 and the inner wall of the avoidance channel 121 forms the second combustion channel 102, and the first combustion channel 101 is formed inside the first main body 110.

[0072] It should be noted that the inner diameter of the avoidance channel 121 should be at least such that after the first body 110 is inserted into the avoidance channel 121, there is sufficient clearance between the outer wall of the first body 110 and the inner wall of the avoidance channel 121, so as to reserve sufficient space for the second combustion channel 102.

[0073] In this embodiment, the second combustion channel 102 is coaxially arranged with the first combustion channel 101. Both the first combustion channel 102 and the second combustion channel 102 extend along the first direction, and the first direction is the thickness direction of the combustion module 100, that is Figure 6 and Figure 5 the Z direction shown. The cooling channel 103 extends along the second direction, and the second direction is the length direction of the combustion module 100, that is Figure 6 and Figure 5 the X direction shown.

[0074] In this embodiment, please refer to Figure 6 and Figure 5 , the first body 110 and the second body 120 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.

[0075] Please refer to Figure 7 and Figure 8 , the distribution module 300 includes a first distributor 310 and a second distributor 320. At least part of the first body 110 is inserted into one end of the second distributor 320. The other end of the second distributor 320 is communicated with the first gas transmission channel 104, and a first gas transmission channel 104 is formed in the first distributor 310.

[0076] Specifically, please refer to Figure 7 and Figure 8 , a main channel 320a and a shunt channel 320b are formed in the second distributor 320. One end of the shunt channel 320b is communicated with the first combustion channel 101, and the other end of the shunt channel 320b and the first gas transmission channel 104 are communicated by the main channel 320a.

[0077] In this embodiment, the first distributor 310 and the second distributor 320 are of a split structure and can be fixed by means of welding, riveting, etc. In other embodiments, the first distributor 310 and the second distributor 320 can also be of an integral structure, which has good integrity and is convenient for rapid assembly.

[0078] More specifically, please refer to Figure 7 and Figure 8, the second distributor 320 includes a connecting member 321 and a flow dividing member 322 provided on the connecting member 321. A main channel 320a is formed inside the connecting member 321, and a flow dividing channel 320b is formed inside the flow dividing member 322. At least a part of the first combustion orifice 101 is inserted into one end of the flow dividing member 322.

[0079] It can be understood that the gas in the first gas transmission channel 104 can be input into the main channel 320a inside the connecting member 321 and output to the first combustion orifice 101 through the flow dividing channel 320b inside the flow dividing member 322. At least a part of the first combustion orifice 101 is embedded in one end of the flow dividing member 322, which can make the first combustion orifice 101 communicate with the flow dividing channel 320b and ensure the seal at the channel connection.

[0080] In this embodiment, the connecting member 321 and the flow dividing member 322 are of a split structure and can be fixed by means such as welding and riveting. In other embodiments, the connecting member 321 and the flow dividing member 322 can also be of an integral structure, which has good integrity and is convenient for rapid assembly.

[0081] Please refer to Figure 3 , the connecting member 321 is spaced from the second main body 120 to form a second gas transmission channel 105.

[0082] It should be noted that the connecting member 321 is spaced from the second main body 120, which can be either arranged at intervals along the Figure 3 Z direction shown or arranged at intervals along the Figure 3 Y direction shown.

[0083] In this embodiment, at least two flow dividing members 322 are provided on each connecting member 321, and the number of flow dividing members 322 corresponds one-to-one to the number of the first combustion orifices 101. In this way, it is beneficial to evenly divide the gas in the main channel 320a of the connecting member 321.

[0084] Please refer to Figure 2 , the number of the first combustion orifices 101 is at least two, and each first combustion orifice 101 is arranged in the same direction to form a row combustion zone, and the number of connecting members 321 corresponds one-to-one to the number of row combustion zones.

[0085] It should be noted that each first combustion orifice 101 is arranged in the same direction, which can be understood as: each first combustion orifice 101 is arranged along the length direction and / or 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, and the width direction of the combustion module 110 is the Figure 2 Y direction shown.

[0086] 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.

[0087] Please refer to Figure 2 , at least two flow splitters 322 are provided on each connecting member 321, and the number of the flow splitters 322 is in one-to-one correspondence with the number of the first combustion channels 101. In this way, it is beneficial to evenly split the gas in the total channel 320a of the connecting member 321.

[0088] Please refer to Figure 3 , the burner further includes a premixing channel and a gas supply channel. The first gas transmission channel 104 is communicated with the gas supply channel, and the second gas transmission channel 105 is communicated 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 the fuel gas and the combustion-supporting gas, and the gas supply channel is used for the other of the fuel gas and the combustion-supporting gas.

[0089] It should be noted that the premixing channel and the gas supply channel are respectively used for delivering gas to the first combustion channels 101 and the second combustion channels 102. That is to say, the premixing channel and the gas supply channel are respectively communicated with different gas sources, and the two are not communicated with each other and independently perform gas delivery.

[0090] 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.

[0091] Please refer to Figure 1 , a combustion system in an embodiment includes the above-mentioned burner.

[0092] Specifically, in addition to including the above-mentioned burner, the combustion system further includes other components such as a mixer, a gas supply member, and a control valve.

[0093] 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.

[0094] Please refer to Figure 1 , a gas equipment in an embodiment includes the above-mentioned combustion system.

[0095] 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.

[0096] The above-mentioned gas equipment has a combustion system that can simultaneously meet different combustion requirements, improving 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, which can effectively reduce the generation of waste gas.

[0097] 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 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 falling within the scope described in this specification.

[0098] The above-described embodiments merely represent several implementation manners of the present application. The description 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, characterized in that, include: A combustion module (100) comprising a first combustion channel (101), a second combustion channel (102) and a cooling channel (103), wherein the second combustion channel (102) is arranged around the periphery of the first combustion channel (101), and the cooling channel (103) is arranged staggered with the first combustion channel (101) and the second combustion channel (102); The burner 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 outputted from the first combustion channel (101), and the other of the fuel gas and the combustion-supporting gas is outputted from the second combustion channel (102); in the second combustion state, a mixture of the fuel gas and the combustion-supporting gas is outputted from the first combustion channel (101) or the second combustion channel (102).

2. The burner according to claim 1, wherein The burner further comprises a water channel connecting pipe (200), wherein the water channel connecting pipe (200) is connected to the combustion module (100) and is used to connect the cooling flow channel (103) with a cooling pipeline.

3. The burner according to claim 2, characterized in that, The water channel connecting pipe (200) comprises a water channel joint (210), a water channel main pipe (220) and a water channel branch pipe (230); the water channel joint (210) is used to connect the cooling pipeline with the water channel main pipe (220); the water channel main pipe (220) is connected to one end of the water channel branch pipe (230); and the other end of the water channel branch pipe (230) is connected to the cooling flow channel (103).

4. The burner according to claim 2, characterized in that, The number of the water channel connecting pipes (200) is at least two, and the cooling flow channel (103) has a cooling inlet and a cooling outlet, the cooling inlet is connected to the water channel branch pipe (230) of one of the water channel connecting pipes (200), and the cooling outlet is connected to the water channel branch pipe (230) of another of the water channel connecting pipes (200).

5. The burner according to claim 3, characterized in that, The number of the cooling channels (103) is at least two, and the cooling channels (103) are arranged at intervals in the same direction, and the number of the water channel branches (230) of each water channel connecting pipe (200) corresponds one-to-one to the number of the cooling channels (103).

6. The burner according to claim 2, characterized in that, The water channel connecting pipe (200) and the combustion module (100) are an integrated structure.

7. The burner according to claim 1, characterized in that, 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 at least two row combustion zones, and at least one cooling channel (103) is provided between two adjacent row combustion zones.

8. The burner according to claim 1, characterized in that, The second combustion hole (102) is coaxially arranged with the first combustion hole (101).

9. The burner according to claim 1, characterized in that, The burner further comprises a first gas supply channel (104) and a second gas supply channel (105), wherein the first gas supply channel (104) is in communication with the first combustion hole (101), and the second gas supply channel (105) is in communication with the second combustion hole (102); In the first combustion state, one of fuel gas and combustion-supporting gas is input through the first gas transmission channel (104), and the other of fuel gas and combustion-supporting gas is input through the second gas transmission channel (105); in the second combustion state, a mixture of fuel gas and combustion-supporting gas is input through the second gas transmission channel (105).

10. The burner according to claim 9, characterized in that, The burner further includes a distribution module (300), which is arranged upstream of the combustion module (100) and is used to divert the gas in the first gas transmission channel (104) to the first combustion holes (101).

11. The burner according to claim 10, characterized in that, The combustion module (110) includes a first main body (110) and a second main body (120). An avoidance channel (121) and the cooling channel (103) are arranged in the second main body (120). A part of the first main body (110) is inserted into the avoidance channel, and another part is inserted into one end of the distribution module (300). A gap between the outer wall of the first main body (110) and the inner wall of the avoidance channel (121) forms the second combustion holes (102), and the first combustion holes (101) are formed in the first main body (110).

12. The burner according to claim 11, characterized in that, The first main body (110) and the second main body (120) are of an integral structure.

13. The burner according to claim 11, characterized in that, The distribution module (300) includes a first distribution member (310) and a second distribution member (320). At least a part of the first main body (110) is inserted into one end of the second distribution member (320). The other end of the second distribution member (320) is communicated with the first gas transmission channel (104), and the first gas transmission channel (104) is formed in the first distribution member (310).

14. The burner according to claim 13, characterized in that, A main channel (320a) and a diversion channel (320b) are formed in the second distribution member (320). One end of the diversion channel (320b) is communicated with the first combustion holes (101), and the other end of the diversion channel (320b) is communicated with the first gas transmission channel (104) through the main channel (320a).

15. The burner according to claim 14, characterized in that, The second distribution member (320) includes a connecting member (321) and a diversion member (322) arranged on the connecting member (321). The main channel (320a) is formed in the connecting member (321), the diversion channel (320b) is formed in the diversion member (322), and at least a part of the first combustion holes (101) is inserted into one end of the diversion member (322).

16. The burner according to claim 15, characterized in that, The connecting member (321) and the second main body (120) are arranged at intervals to form the second gas transmission channel (105).

17. The burner according to claim 15, characterized in that, The number of the first combustion holes (101) is at least two. Each of the first combustion holes (101) is arranged in the same direction to form a row combustion area, and the number of the connecting members (321) corresponds to the number of the row combustion areas one by one.

18. The burner according to claim 15, characterized in that, At least two of the diversion members (322) are arranged on each of the connecting members (321), and the number of the diversion members (322) corresponds to the number of the first combustion holes (101) one by one.

19. The burner according to claim 9, characterized in that, The burner further includes a premixing passage and a gas supply passage. The first gas transmission passage (104) communicates with the gas supply passage, and the second gas transmission passage (105) communicates with the premixing passage; Wherein, the premixing passage is used for inputting a mixture of fuel gas and combustion-supporting gas; or, the premixing passage is used for inputting one of the fuel gas and the combustion-supporting gas, and the gas supply passage is used for inputting the other of the fuel gas and the combustion-supporting gas.

20. A combustion system, characterized in that, It includes the burner according to any one of claims 1-19.

21. A gas device, characterized in that, It includes the combustion system according to claim 20.

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