Burner and roaster

Abstract

The utility model belongs to the technical field of combustion devices and discloses a burner and a roaster, the burner comprises a main body extending in the first direction, one end of the main body in the first direction is a gas outlet end, a first channel, a second channel and a third channel which are separated are arranged in the main body, the first channel extends in the first direction and is used for conveying high-pressure oxygen, and the second channel extends in the second direction and is used for conveying high-pressure oxygen. The first channel is provided with a first air inlet and a first air outlet located in the air outlet end. The second channel extends in the first direction and is used for conveying the first gas, the second channel is provided with a second gas inlet and a second gas outlet located in the gas outlet end, and the second channel is arranged between the first channel and the third channel; the third channel is used for conveying second gas, the third channel is provided with a third gas inlet and a third gas outlet located in the gas outlet end, at least part of the channel wall of the third channel intersects with the first direction, and the third channel is used for guiding the second gas to the first gas and the high-pressure oxygen; the technical problem that the risk of explosion is high after oxygen and fuel gas are mixed in the burner can be solved.

Description

Technical Field

[0001] This application belongs to the field of combustion device technology, specifically relating to a burner and a baking device. Background Technology

[0002] Oxy-fuel combustion is a combustion technology that uses a high concentration of oxygen instead of air as the oxidant, typically with an oxygen concentration of 90% or higher. Compared to using air as the oxidant, oxy-fuel combustion can reduce the emission of pollutants such as sulfur oxides. Oxy-fuel combustion usually involves introducing combustion-supporting oxygen and fuel gas into the burner, where the oxygen and fuel gas are ignited outside the burner. Some burners have internal mixing channels for oxygen and fuel gas to ensure thorough mixing, but the risk of explosion is higher when oxygen and fuel gas mix inside the burner. Utility Model Content

[0003] The purpose of this application is to provide a burner and a baking device to solve the technical problem in the prior art where the risk of explosion is high after oxygen and gas mix inside the burner.

[0004] To achieve the above objectives, an embodiment of the first aspect of this application provides a burner, including a main body extending along a first direction, one end of the main body along the first direction being an outlet end, and the main body having a first channel, a second channel, and a third channel separated from each other. The first channel extends along the first direction and is used to transport high-pressure oxygen, and the first channel has a first inlet and a first outlet located at the outlet end; the second channel extends along the first direction and is used to transport a first gas, and the second channel has a second inlet and a second outlet located at the outlet end, and the second channel is disposed between the first channel and the third channel; the third channel is used to transport a second gas, and the third channel has a third inlet and a third outlet located at the outlet end, at least a portion of the channel wall of the third channel intersects the first direction and is used to guide the second gas to the first gas and high-pressure oxygen; one of the first gas and the second gas is combustion-supporting oxygen, and the other is fuel gas.

[0005] In some embodiments, the main body includes a first pipe, a second pipe, and a third pipe. At least a portion of the first pipe forms a first channel. At least a portion of the second pipe is disposed on the outer periphery of the first pipe and forms a second channel with the first pipe. The third pipe includes a guide section disposed on the outer periphery of the second pipe and forms at least a portion of a third channel including a third air outlet with the second pipe. The inner diameter of the guide section gradually decreases from the end away from the third air outlet to the end near the third air outlet.

[0006] In some embodiments, the guide section has an inner conical surface coaxial with the second conduit.

[0007] In some embodiments, the second air inlet is located at one end of the second pipe away from the air outlet, and in the length direction of the second pipe, the first pipe extends from the side of the second air inlet away from the second air outlet to the outside of the second pipe; the body also includes an annular first closure member, which is used to close the gap between the first pipe and the second pipe, and in the length direction of the second pipe, the first closure member is located on the side of the second air inlet away from the second air outlet.

[0008] In some embodiments, the third air inlet is located at one end of the third pipe away from the air outlet, and the second pipe extends from the side of the third air inlet away from the third air outlet to the outside of the third pipe along the length direction of the third pipe; the body also includes an annular second closure member for sealing the gap between the second pipe and the third pipe, and the second closure member is located on the side of the third air inlet away from the third air outlet along the length direction of the third pipe.

[0009] In some embodiments, the portion of the first pipe located within the second pipe is coaxial with the second pipe; and / or, the portion of the second pipe located within the third pipe is coaxial with the third pipe.

[0010] In some embodiments, the burner further includes an ignition gun connected to the body, which is used to ignite the gas.

[0011] In some embodiments, the ignition gun extends along a first direction and includes an ignition switch located at the end of the ignition gun away from the outlet end along the first direction.

[0012] An embodiment of the second aspect of this application also provides a baking apparatus, including the burner of any one of the embodiments of the first aspect.

[0013] In some embodiments, the oven further includes a first oxygen supply device, a second oxygen supply device, and a gas supply device, wherein the first oxygen supply device is connected to a first air inlet, the second oxygen supply device is connected to a third air inlet, and the gas supply device is connected to a second air inlet.

[0014] The beneficial effects of the burner and baking device provided in this application are as follows: the first channel, the second channel, and the third channel are separated from each other, which can prevent oxygen and gas from mixing inside the main body and prevent oxygen and gas from exploding; at least part of the channel wall of the third channel intersects with the first direction, which can guide the second gas to approach the first gas and the second gas along the direction intersecting with the first direction after flowing out of the main body, so that the first gas and the second gas can mix outside the main body and the first gas and the second gas can burn completely; moreover, the high-pressure oxygen can push the flame to move a longer distance along the first direction, so that the flame can heat other objects at close range and improve heating efficiency; this application can solve the technical problem of the high risk of explosion after oxygen and gas mix inside the burner. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a burner provided for some embodiments of this application;

[0017] Figure 2 for Figure 1 A schematic diagram showing the connection between the first and second pipes of the burner.

[0018] Figure 3 This is a schematic diagram of the connection between the second and third pipes provided in some embodiments of this application.

[0019] The following are the labeling elements in the figure:

[0020] 100. Burning nozzle;

[0021] 10. Main body; 11. First pipe; 111. First channel; 1111. First air inlet; 1112. First air outlet; 12. Second pipe; 121. Second channel; 1211. Second air inlet; 1212. Second air outlet; 13. Third pipe; 131. Third channel; 1311. Third air inlet; 1312. Third air outlet; 132. Guide section; 1321. Inner conical surface; 133. Main body section; 14. First sealing element; 15. Second sealing element; 16. Air outlet end;

[0022] 20. Ignition gun; 21. Ignition switch. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] The first aspect of this application provides a burner for generating a high-temperature flame. The burner can heat materials in industries such as steel production, glass production, cement production, and power generation. The burner can also be used for waste incineration. In this application, the burner in a baking oven is used as an example. It can be understood that the burner can also be used in other equipment such as gasifiers or heating furnaces.

[0028] An embodiment of the first aspect of this application provides a burner 100, please refer to... Figure 1 and Figure 2 The burner 100 includes a main body 10 extending along a first direction Z. One end of the main body 10 along the first direction Z is an outlet end 16. The main body 10 has a first channel 111, a second channel 121, and a third channel 131 that are separated from each other. The first channel 111 extends along the first direction Z and is used to transport high-pressure oxygen. The first channel 111 has a first inlet 1111 and a first outlet 1112 located at the outlet end 16. The second channel 121 extends along the first direction Z and is used to transport a first gas. The second channel 121 has a second... The system includes an air inlet 1211 and a second air outlet 1212 located at the air outlet end 16. A second channel 121 is disposed between the first channel 111 and the third channel 131. The third channel 131 is used to transport a second gas. The third channel 131 has a third air inlet 1311 and a third air outlet 1312 located at the air outlet end 16. At least a portion of the channel wall of the third channel 131 intersects with the first direction Z and is used to guide the second gas to the first gas and high-pressure oxygen. One of the first gas and the second gas is combustion-supporting oxygen and the other is fuel gas.

[0029] Any two of the first channel 111, the second channel 121, and the third channel 131 are separated from each other, and a separating structure is provided between any two channels. Optionally, the first channel 111, the second channel 121, and the third channel 131 can be arranged sequentially along a direction perpendicular to the first direction Z. Optionally, the second channel 121 can also be located on the outer periphery of the first channel 111, and the third channel 131 can also be located on the outer periphery of the second channel 121.

[0030] The first air inlet 1111 can receive high-pressure oxygen, and the first channel 111 can guide the high-pressure oxygen to the first air outlet 1112 and guide the high-pressure oxygen to flow along the first direction Z. One end of the first channel 111 along the first direction Z is the first air outlet 1112, which is an opening formed at the air outlet 16. The first channel 111 can guide the high-pressure oxygen from the first air outlet 1112 to be ejected from the first air outlet 1112 along the first direction Z to the outside of the main body 10. The high-pressure oxygen can continue to move a long distance along the first direction Z outside the main body 10.

[0031] The second air inlet 1211 receives the first gas, and the second channel 121 guides the first gas to the second air outlet 1212 and guides the first gas to flow along the first direction Z. One end of the second channel 121 along the first direction Z is the second air outlet 1212, which is an opening formed at the air outlet 16. The second channel 121 guides the first gas from the second air outlet 1212 along the first direction Z to the outside of the main body 10, where the first gas can continue to move a certain distance. The pressure of the first gas is less than the pressure of high-pressure oxygen.

[0032] The third inlet 1311 receives the second gas, and the third channel 131 guides the second gas to the third outlet 1312 and guides the second gas to flow along the extension direction of its own channel wall. One end of the third channel 131 along its own length is the third outlet 1312, which is an opening formed at the outlet end 16. The pressure of the second gas is less than the pressure of high-pressure oxygen.

[0033] At least a portion of the channel wall of the third channel 131 intersects the first direction Z and is used to guide the second gas to the first gas and high-pressure oxygen. That is, from the end furthest from the third outlet 1312 to the end closest to the third outlet 1312, the distance between the at least portion of the channel wall surrounding the third outlet 1312 and the first channel 111 and the second channel 121 gradually decreases. This portion of the channel wall can guide the second gas to flow from the third outlet 1312 to the outside of the main body 10 in a direction intersecting the first direction Z, and allow the second gas to flow closer to the first gas and high-pressure oxygen, thereby mixing the first and second gases outside the main body 10, and the second gas can push the first gas to the position of the high-pressure oxygen. Optionally, the third channel 131 can also extend in a direction intersecting the first direction Z, meaning that all the channel walls of the third channel 131 intersect the first direction Z. Optionally, the third channel 131 can also extend entirely in the first direction Z, with the portion of the channel wall near the outlet end 16 extending in a direction intersecting the first direction Z. Optionally, in the direction of the interval between the third channel 131 and the first channel 111, the portion of the channel wall of the third channel 131 that intersects with the first direction Z is located on the side of the third channel 131 away from the first channel 111.

[0034] One of the first gas and the second gas is oxygen, which supports combustion, and the other is fuel gas. That is, when oxygen is supplied in the first channel 111, fuel gas is supplied in the second channel 121; and when fuel gas is supplied in the first channel 111, oxygen is supplied in the second channel 121. The mixture of oxygen and fuel gas can be ignited. After the oxygen and fuel gas are ignited to form a flame, the high-pressure oxygen can propel the flame a considerable distance along the first direction Z.

[0035] In use, high-pressure oxygen is introduced into the first channel 111 through the first air inlet 1111, the first gas is introduced into the second channel 121 through the second air inlet 1211, and the second gas is introduced into the third channel 131 through the third air inlet 1311. The channel wall of the third channel 131 guides the second gas to flow towards the first gas and high-pressure oxygen as it flows out from the third air outlet 1312. The second gas first flows to the first gas and mixes with it, and then the second gas pushes the first gas to flow to the high-pressure oxygen. After the high-pressure oxygen, the first gas and the second gas are introduced, the first gas and the second gas are ignited from the outlet 16. The high-pressure oxygen pushes the flame to move a longer distance along the first direction Z, so that the flame heats other objects at close range.

[0036] The beneficial effects of this application embodiment are as follows: the first channel 111, the second channel 121 and the third channel 131 are separated from each other, which can prevent oxygen and gas from mixing inside the main body 10 and prevent oxygen and gas from exploding; at least part of the channel wall of the third channel 131 intersects the first direction Z, which can guide the second gas to approach the first gas and the second gas along the direction intersecting the first direction Z after flowing out of the main body 10, so that the first gas and the second gas can mix outside the main body 10 and the first gas and the second gas can burn completely; moreover, high-pressure oxygen can push the flame to move a longer distance along the first direction Z, so that the flame can heat other objects at close range and improve heating efficiency; this application embodiment can solve the technical problem of high risk of explosion after oxygen and gas mix inside the burner 100.

[0037] In some embodiments, please refer to Figures 1 to 3 The main body 10 includes a first pipe 11, a second pipe 12 and a third pipe 13. At least a portion of the first pipe 11 forms a first channel 111. At least a portion of the second pipe 12 is located on the outer periphery of the first pipe 11 and forms a second channel 121 with the first pipe 11. The third pipe 13 includes a guide section 132, which is located on the outer periphery of the second pipe 12 and forms at least a third channel 131 with the second pipe 12. The inner diameter of the guide section 132 gradually decreases from the end away from the third air outlet 1312 to the end near the third air outlet 1312.

[0038] At least a portion of the first pipe 11 forms the first channel 111, meaning that at least a portion of the first pipe 11 extends from one end of the opening of the first pipe 11 along the first direction Z, and this portion of the first pipe 11 forms the first channel 111, with the opening at one end of the first pipe 11 along the first direction Z being the first air outlet 1112.

[0039] Optionally, the portion of the first pipe 11 other than the portion forming the first channel 111 may intersect with the first direction Z. Optionally, the first air inlet 1111 may be located within the first pipe 11, and the first air inlet 1111 communicates with the outside of the main body 10 through the portion of the first pipe 11 other than the first channel 111. Optionally, the first pipe 11 may extend along the first direction Z, and the entire first pipe 11 may be used to form the first channel 111. Optionally, the first air inlet 1111 may be located at the end of the first pipe 11 away from the first air outlet 1112 along its own length direction, and the first air inlet 1111 may communicate directly with the outside of the main body 10.

[0040] At least a portion of the second pipe 12 is disposed around the outer periphery of the first pipe 11, that is, at least a portion of the first pipe 11 is disposed within the second pipe 12. At least a portion of the second pipe 12 and the first pipe 11 form a second channel 121, that is, the first pipe 11 and the second pipe 12 are spaced apart within the second pipe 12, and the space between the outer surface of the first pipe 11 and the inner surface of the second pipe 12 is the second channel 121. The portion of the second pipe 12 that forms the second channel 121 extends along the first direction Z, and one end of the second pipe 12 that opens along the first direction Z forms a second air outlet 1212 with the first pipe 11.

[0041] Optionally, the portion of the second pipe 12 outside the second channel 121 may intersect with the first direction Z. Optionally, the second air inlet 1211 may be located within the second pipe 12, and the second air inlet 1211 communicates with the outside of the main body 10 through the portion of the second pipe 12 outside the second channel 121. Optionally, the second pipe 12 may extend along the first direction Z. Optionally, the second air inlet 1211 may be located at the end of the second pipe 12 away from the second air outlet 1212 along its own length direction, and the second air inlet 1211 communicates directly with the outside of the main body 10.

[0042] The guide section 132 is located on the outer periphery of the second pipe 12, meaning that at least a portion of the second pipe 12 is located within the guide section 132. The guide section 132 and the second pipe 12 form at least a portion of the third channel 131, including the third air outlet 1312. In other words, the second pipe 12 located within the guide section 132 is spaced apart from the guide section 132, and the space between the inner surface of the guide section 132 and the outer surface of the second pipe 12 is part or all of the third channel 131. The guide section 132 includes one end with an opening in the third pipe 13, and the end of the guide section 132 with an opening along the first direction Z forms the third air outlet 1312 with the second pipe 12.

[0043] The inner diameter of the guide section 132 gradually decreases from the end furthest from the third outlet 1312 to the end closest to the third outlet 1312. That is, from the end furthest from the third outlet 1312 to the end closest to the third outlet 1312, the inner surface of the guide section 132 slopes towards the second pipe 12. This inner surface guides the second gas to flow towards the second pipe 12. After the second gas exits from the third outlet 1312, the third gas can flow towards the first gas and the high-pressure oxygen. Optionally, the guide section 132 and the second pipe 12 can form a third channel 131, with the third inlet 1311 located at the end of the guide section 132 furthest from the third outlet 1312 along the first direction Z. Optionally, the guide section 132 and the second pipe 12 can partially form the third channel 131, with the third inlet 1311 located at other positions on the third pipe 13.

[0044] The beneficial effects of this embodiment are as follows: The second pipe 12 is disposed within the guide section 132, with the third channel 131 surrounding the second channel 121. The inner diameter of the guide section 132 gradually decreases from the end furthest from the third outlet 1312 to the end closest to the third outlet 1312. The guide section 132 can guide the second gas to approach the first gas from multiple directions, ensuring thorough mixing and improving combustion efficiency. The first pipe 11 is disposed within the second pipe 12, with the second channel 121 surrounding the first channel 111. The third channel 131 is located on the outer periphery of the second channel 121. The first gas flowing out from the third channel 131 is located on the outer periphery of the high-pressure oxygen. The mixed first and second gases can approach the high-pressure oxygen from multiple directions. After ignition, flames are generated around the high-pressure oxygen. The high-pressure oxygen can drive the surrounding flames to move along the first direction Z, improving the utilization rate of the high-pressure oxygen.

[0045] In some embodiments, please refer to Figure 3 The third conduit 13 also includes a main body section 133 extending along the first direction Z. The main body section 133 is located at the end of the guide section 132 away from the outlet end 16 along the first direction Z. The length of the guide section 132 is less than the length of the main body section 133. The main body section 133 is located on the outer periphery of the second conduit 12 and forms a portion of the third channel 131 with the second conduit 12. The third air inlet 1311 is located on the guide section 132. The main body section 133 is used to guide the second gas from the third air inlet 1311 to the guide section 132.

[0046] In some embodiments, please refer to Figures 1 to 3 The guide section 132 has an inner conical surface 1321 coaxial with the second pipe 12. That is, the inner wall surface of the guide section 132 is a conical surface. On a cross section passing through the guide section 132 and perpendicular to the first direction Z, the shortest distance between each position of the inner conical surface 1321 and the outer surface of the second pipe 12 is equal. Therefore, the second gas in the third channel 131 is evenly distributed around the second channel 121. After the second gas flows out of the third outlet 1312, it mixes more thoroughly with the first gas.

[0047] In some embodiments, please refer to Figure 1 and Figure 2The second air inlet 1211 is located at the end of the second pipe 12 away from the air outlet 16. In the length direction of the second pipe 12, the first pipe 11 extends from the side of the second air inlet 1211 away from the second air outlet 1212 to the outside of the second pipe 12. The main body 10 also includes an annular first sealing member 14, which is used to seal the gap between the first pipe 11 and the second pipe 12. In the length direction of the second pipe 12, the first sealing member 14 is located on the side of the second air inlet 1211 away from the second air outlet 1212.

[0048] The second air inlet 1211 is located at the end of the second pipe 12 away from the air outlet 16, meaning that the second air inlet 1211 is located near the end face of the second pipe 12 away from the air outlet 16 along the length of the second pipe 12.

[0049] For ease of description, the first pipe 11 is defined as extending from a first outlet position on the second pipe 12 to the outside of the second pipe 12. Along the length of the second pipe 12, the first pipe 11 extends from the side of the second air inlet 1211 away from the second air outlet 1212 to the outside of the second pipe 12; that is, the second air inlet 1211 is located between the second air outlet 1212 and the first outlet position. Optionally, the first outlet position can be located on the end face of the second pipe 12 away from the outlet end 16 along its own length direction, and the first pipe 11 does not affect the delivery of the first gas by the second channel 121. Optionally, the first outlet position can also be located between the two ends of the second pipe 12 along its own length direction. The first pipe 11 intersects the second pipe 12 at the first outlet position. The first pipe 11 can block the gas flow in the second channel 121. If the second air inlet 1211 is set between the first outlet position and the second air outlet 1212, the flow of the first gas between the second air inlet 1211 and the second air outlet 1212 will not be affected, so that the second channel 121 can stably transport the first gas.

[0050] The first sealing member 14 is used to seal the gap between the first pipe 11 and the second pipe 12. Specifically, the inner annular surface of the first sealing member 14 is sealed to the outer surface of the first pipe 11, and the outer annular surface of the first sealing member 14 is sealed to the inner surface of the second pipe 12. The first sealing member 14 seals the end of the second channel 121 away from the second outlet 1212. Along the length of the second pipe 12, the first sealing member 14 is located on the side of the second inlet 1211 away from the second outlet 1212, meaning that the first sealing member 14 does not obstruct the flow of the first gas from the second inlet 1211 to the second outlet 1212.

[0051] The beneficial effects of this application embodiment are as follows: the first pipe 11 extends from the side of the second air inlet 1211 away from the second air outlet 1212 to the outside of the second pipe 12, which can prevent the first pipe 11 from obstructing the flow of the first gas from the second air inlet 1211 to the second air outlet 1212. The first sealing member 14 can close the second channel 121, preventing the first gas from flowing out of the main body 10 from a position other than the second air outlet 1212, so that the first gas can flow stably from the second air inlet 1211 to the second air outlet 1212.

[0052] In some embodiments, please refer to Figure 1 and Figure 3 The third air inlet 1311 is located at the end of the third pipe 13 away from the air outlet 16. Along the length of the third pipe 13, the second pipe 12 extends from the side of the third air inlet 1311 away from the third air outlet 1312 to the outside of the third pipe 13. The main body 10 also includes an annular second closure member 15, which is used to close the gap between the second pipe 12 and the third pipe 13. Along the length of the third pipe 13, the second closure member 15 is located on the side of the third air inlet 1311 away from the third air outlet 1312.

[0053] The third air inlet 1311 is located at the end of the third pipe 13 away from the air outlet 16, which means that the third air inlet 1311 is set close to the end face of the third pipe 13 away from the air outlet 16 along the length of the third pipe 13.

[0054] For ease of description, the second pipe 12 is defined as extending from the second outlet position on the third pipe 13 to the outside of the second pipe 12. Along the length of the third pipe 13, the second pipe 12 extends from the side of the third air inlet 1311 away from the third air outlet 1312 to the outside of the third pipe 13; that is, the third air inlet 1311 is located between the third air outlet 1312 and the second outlet position. Optionally, the second outlet position can be located on the end face of the third pipe 13 away from the outlet end 16 along its own length direction, and the second pipe 12 does not affect the delivery of the second gas in the third channel 131. Optionally, the second outlet position can also be located between the two ends of the third pipe 13 along its own length direction. The second pipe 12 intersects the third pipe 13 at the second outlet position. The second pipe 12 can block the gas flow in the second channel 121. If the third air inlet 1311 is set between the second outlet position and the third air outlet 1312, the flow of the second gas between the third air inlet 1311 and the third air outlet 1312 will not be affected, so that the third channel 131 can stably transport the second gas.

[0055] The second sealing element 15 is used to seal the gap between the second pipe 12 and the third pipe 13. Specifically, the inner annular surface of the second sealing element 15 is sealed to the outer surface of the second pipe 12, and the outer annular surface of the second sealing element 15 is sealed to the inner surface of the third pipe 13. The second sealing element 15 seals the end of the third channel 131 away from the third outlet 1312. Along the length of the third pipe 13, the second sealing element 15 is located on the side of the third inlet 1311 away from the third outlet 1312, meaning that the second sealing element 15 does not obstruct the flow of the second gas from the third inlet 1311 to the third outlet 1312.

[0056] The beneficial effects of this application embodiment are as follows: the second pipe 12 extends from the side of the third air inlet 1311 away from the third air outlet 1312 to the outside of the third pipe 13, which can prevent the second pipe 12 from obstructing the flow of the second gas from the third air inlet 1311 to the third air outlet 1312. The second sealing member 15 can close the third channel 131, preventing the second gas from flowing out of the main body 10 from a position other than the third air outlet 1312, so that the second gas can flow stably from the third air inlet 1311 to the third air outlet 1312.

[0057] In some embodiments, please refer to Figure 1 and Figure 2 The portion of the first pipe 11 located inside the second pipe 12 is coaxial with the second pipe 12. The portion of the first pipe 11 located inside the second pipe 12 forms a second channel 121 with the second pipe 12. That is, on a cross section passing through the second channel 121 and perpendicular to the first direction Z, the shortest distance between each position on the inner surface of the second pipe 12 and the outer surface of the first pipe 11 is equal. Therefore, the first gas in the second channel 121 is evenly distributed around the first channel 111, and the first gas can be more fully mixed with the surrounding first gas after flowing out of the second outlet 1212.

[0058] In some embodiments, please refer to Figure 1 and Figure 3 The portion of the second pipe 12 located inside the third pipe 13 is coaxial with the third pipe 13. The portion of the second pipe 12 located inside the third pipe 13 forms a third channel 131 with the third pipe 13. That is to say, on a cross section passing through the third channel 131 and perpendicular to the first direction Z, the shortest distance between each position on the inner surface of the third pipe 13 and the outer surface of the second pipe 12 is equal. Therefore, when the second gas in the third channel 131 flows to the guide section 132, it is more evenly distributed, and the second gas can be more fully mixed with the surrounding second gas after flowing out of the third outlet 1312.

[0059] In some embodiments, please refer to Figure 1The burner 100 also includes an ignition gun 20 connected to the main body 10, which is used to ignite the gas.

[0060] The ignition gun 20 has its outlet located near the second gas outlet 1212 and the third gas outlet 1312. After a flame is generated at the outlet, it ignites the mixture of gas and oxygen flowing out from the second gas outlet 1212 and the third gas outlet 1312. The ignition gun 20 is connected to the main body 10 for convenient and rapid ignition.

[0061] In some embodiments, please refer to Figure 1 The ignition gun 20 extends along the first direction Z and includes an ignition switch 21, which is located at the end of the ignition gun 20 away from the gas outlet 16 along the first direction Z.

[0062] The ignition gun 20 extends in the same direction as the main body 10, which reduces the space occupied by the burner 100 in the direction perpendicular to the first direction Z. The ignition switch 21 controls the flame generated at the outlet of the ignition gun 20. The ignition switch 21 is located at the end of the ignition gun 20 away from the gas outlet 16 along the first direction Z. That is, the ignition switch 21 is located away from the gas outlet 16. When the gas is ignited, the flame generated by the gas extends away from the ignition switch 21, making it safer for the operator to turn on the ignition switch 21.

[0063] In some embodiments, please refer to Figures 1 to 3 The burner 100 includes a main body 10 extending along a first direction Z. One end of the main body 10 along the first direction Z is an air outlet 16. The main body 10 includes a first pipe 11, a second pipe 12, and a third pipe 13. The first pipe 11 forms a first channel 111. The second pipe 12 is located on the outer periphery of the first pipe 11 and forms a second channel 121 with the first pipe 11. The third pipe 13 is located on the outer periphery of the second pipe 12 and forms a third channel 131 with the second pipe 12. The third pipe 13 includes a guide section 132. The inner diameter of the guide section 132 gradually decreases from the end away from the third air outlet 1312 to the end near the third air outlet 1312.

[0064] The first channel 111 extends along the first direction Z and is used to transport high-pressure oxygen. The first channel 111 has a first inlet 1111 and a first outlet 1112 located at the outlet end 16. The second channel 121 extends along the first direction Z and is used to transport a first gas. The second channel 121 has a second inlet 1211 and a second outlet 1212 located at the outlet end 16. The second channel 121 is located between the first channel 111 and the third channel 131. The third channel 131 is used to transport a second gas. The third channel 131 has a third inlet 1311 and a third outlet 1312 located at the outlet end 16. At least a portion of the channel wall of the third channel 131 intersects the first direction Z and is used to guide the second gas to the first gas and the high-pressure oxygen. One of the first gas and the second gas is combustion-supporting oxygen, and the other is fuel gas.

[0065] The main body 10 also includes an annular first sealing member 14 and an annular second sealing member 15. The first sealing member 14 is used to seal the gap between the first pipe 11 and the second pipe 12. In the length direction of the second pipe 12, the first sealing member 14 is located on the side of the second air inlet 1211 away from the second air outlet 1212. The second sealing member 15 is used to seal the gap between the second pipe 12 and the third pipe 13. In the length direction of the third pipe 13, the second sealing member 15 is located on the side of the third air inlet 1311 away from the third air outlet 1312.

[0066] An embodiment of the second aspect of this application also provides a baking apparatus, which includes a burner 100 according to any one of the embodiments of the first aspect.

[0067] The beneficial effects of the embodiments of this application are as follows: the baking device of the embodiments of this application includes the burner 100 in the first aspect embodiment, which enables the first gas and the second gas to mix outside the burner 100, reducing the risk of explosion, and possessing all the advantages of the burner 100 in the first aspect embodiment.

[0068] In some embodiments, the oven further includes a first oxygen supply device, a second oxygen supply device, and a gas supply device, wherein the first oxygen supply device is connected to a first air inlet 1111, the second oxygen supply device is connected to a third air inlet 1311, and the gas supply device is connected to a second air inlet 1211.

[0069] The first oxygen supply device supplies high-pressure oxygen to the first air inlet 1111. The second oxygen supply device is connected to the third air inlet 1311, meaning it supplies combustion-supporting oxygen to the third air inlet 1311, and the third channel 131 is used to supply combustion-supporting oxygen. The gas supply device is connected to the second air inlet 1211, meaning it supplies gas to the second air inlet 1211, and the second channel 121 is used to supply gas. The output pressure of the gas supply device and the output pressure of the second oxygen supply device are both lower than the output pressure of the first oxygen supply device. The second channel 121 is located between the first channel 111 and the third channel 131, so the gas output from the second channel 121 is located between the combustion-supporting oxygen and the high-pressure oxygen. During combustion, there is more oxygen around the gas, allowing the gas and oxygen to react fully and improving combustion efficiency.

[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A burner characterized by, The burner comprises a main body extending along a first direction, one end of the main body along the first direction being an air outlet end, the main body being provided with a first channel, a second channel and a third channel which are separated from each other, the first channel extending along the first direction and being used for conveying high-pressure oxygen, the first channel being provided with a first air inlet and a first air outlet located at the air outlet end; the second channel extending along the first direction and being used for conveying a first gas, the second channel being provided with a second air inlet and a second air outlet located at the air outlet end, the second channel being arranged between the first channel and the third channel; the third channel being used for conveying a second gas, the third channel being provided with a third air inlet and a third air outlet located at the air outlet end, at least part of the channel wall of the third channel intersecting the first direction and being used for guiding the second gas towards the first gas and the high-pressure oxygen; one of the first gas and the second gas being combustion-supporting oxygen, and the other being fuel gas.

2. The burner of claim 1, wherein The main body comprises a first pipe, a second pipe and a third pipe, at least part of the first pipe surrounding the first channel; at least part of the second pipe is arranged on the outer periphery of the first pipe and surrounds the second channel together with the first pipe; the third pipe comprises a guide section, the guide section being arranged on the outer periphery of the second pipe and surrounding at least part of the third channel including the third air outlet together with the second pipe, the inner diameter of the guide section gradually decreasing from one end away from the third air outlet to one end close to the third air outlet.

3. The burner of claim 2, wherein The guide section has an inner conical surface coaxial with the second pipe.

4. The burner of claim 2, wherein The second air inlet is located at one end of the second pipe away from the air outlet end, in the length direction of the second pipe, the first pipe extends to the outside of the second pipe from the side of the second air inlet away from the second air outlet; the main body further comprises an annular first closure member, the first closure member being used for closing the gap between the first pipe and the second pipe, in the length direction of the second pipe, the first closure member is located on the side of the second air inlet away from the second air outlet.

5. The burner of claim 2 wherein, The third air inlet is located at one end of the third pipe away from the air outlet end, in the length direction of the third pipe, the second pipe extends to the outside of the third pipe from the side of the third air inlet away from the third air outlet; the main body further comprises an annular second closure member, the second closure member being used for closing the gap between the second pipe and the third pipe, in the length direction of the third pipe, the second closure member is located on the side of the third air inlet away from the third air outlet.

6. Burner according to any one of claims 2-5, characterized in that The part of the first pipe located in the second pipe is coaxial with the second pipe; and / or, The part of the second pipe located in the third pipe is coaxial with the third pipe.

7. The burner of any one of claims 1-5, wherein, The burner further comprises an ignition lance connected to the main body, the ignition lance being used for igniting the fuel gas.

8. The burner of claim 7, wherein The ignition lance extends along the first direction, the ignition lance comprising an ignition switch, the ignition switch being arranged at one end of the ignition lance away from the air outlet end along the first direction.

9. A toaster characterized by A burner comprising the burner tip as claimed in any one of claims 1-8.

10. The toaster of claim 9, wherein, The roaster further comprises a first oxygen supply device connected to the first gas inlet, a second oxygen supply device connected to the third gas inlet, and a fuel gas supply device connected to the second gas inlet.

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