Novel furnace end

Abstract

The utility model discloses a novel furnace end which comprises a body and a plug, the body is manufactured by adopting a core-pulling mold-splitting process and comprises an inner injection pipe and an outer injection pipe, the inner injection pipe is bent, an inner air inlet is formed in one end of the inner injection pipe, and an inner air outlet is formed in the other end of the inner injection pipe; a bent inner cavity communicating with the inner air inlet and the inner air outlet is formed in the inner injection pipe. The outer injection pipe is provided with an outer air inlet, an outer air outlet and an air guide part, and an air guide cavity for communicating the outer air inlet with the outer air outlet is formed in the air guide part; the plug is made by adopting a mold splitting process and is provided with a first bulge and a second bulge which are rounded, the plug is detachably connected to the body, the first bulge is positioned in the air guide cavity, and the second bulge is positioned at the bent part of the inner injection pipe, so that the bent part of the inner cavity is in rounded corner transition, and the air guide cavity is in circular arc transition. Therefore, the plug and the body have the same manufacturing process and can be designed on a set of forming die, the production and manufacturing cost is reduced, and meanwhile, the production efficiency of the furnace end is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking stoves, and particularly relates to a novel burner head. Background Art

[0002] The burner head of a gas stove is usually made by die-casting aluminum alloy. In order to premix the primary air for combustion, the aluminum alloy burner head needs to be designed in the form of a Venturi tube (a tube with a large inner diameter at both ends and a small inner diameter in the middle). In the prior art, for example, a burner head disclosed in the patent authorization number CN 104456559 A includes a head, an ejector tube part and a sealing door member. The head includes a central gas outlet pipe, an annular gas chamber surrounding the central gas outlet pipe, a central air inlet interface at the bottom of the head, and a mixing chamber communicated with the annular gas chamber; the sealing door member is arranged at the air inlet ends of the inner and outer ejector tubes, and there are nozzle mounting holes on the sealing door member; the head is made by a core-pulling process, and the air inlet ports of the mixing chamber and the air inlet end of the central air inlet interface face the same direction or form a certain angle or radian; the inner and outer ejector tubes are made into one body by a double-sided core-pulling process.

[0003] However, it is found that the following problems still exist in the use process: due to the structural design of the head and the ejector tube part, that is, there are many cavities and complex structures in the head and the ejector tube part, and it is necessary to use a core-pulling process separately for manufacturing. It is impossible to share a set of molds for the head and the ejector tube part, and independent die-casting molds must be designed and manufactured for the head and the ejector tube part respectively, thus increasing the production and manufacturing cost. At the same time, the independent die-casting production in the production process also significantly reduces the production efficiency. In addition, even if an attempt is made to combine the head and the ejector tube part into a set of molds, it will significantly increase the design difficulty of the mold and the complexity of the die-casting process.

[0004] Therefore, it is necessary to improve the burner head. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a novel burner head. The body is made by a core-pulling and mold-splitting process, and the plug is made by a mold-splitting process. The plug and the body have the same manufacturing process and can be designed on a set of molding molds, reducing the production and manufacturing cost and improving the production efficiency of the burner head at the same time.

[0006] The technical solution adopted by the utility model to solve its problems is as follows:

[0007] A novel burner head, comprising:

[0008] A body, which is made by a core-pulling and mold-splitting process and includes an inner ejector tube and an outer ejector tube. The inner ejector tube is bent and has an inner air inlet at one end and an inner air outlet at the other end. An inner cavity body that communicates the inner air inlet and the inner air outlet and is bent is arranged inside the inner ejector tube;

[0009] The external injection tube is provided with an external air inlet, an external air outlet and a gas guiding part, and a gas guiding cavity communicating the external air inlet with the external air outlet is formed in the gas guiding part;

[0010] The plug is made by a split mold process and is provided with a first convex part and a second convex part with rounded corners. The plug is detachably connected to the body. The first convex part is located in the gas guiding cavity, and the second convex part is located at the bent part of the internal injection tube.

[0011] Further, arc-shaped grooves extending along the arc direction are also provided on the rounded corner arc surfaces of the first convex part and the second convex part, so that when the plug is connected to the body, a rounded corner transition is formed between the first convex part and the two side parts in the gas guiding cavity, and a rounded corner transition is formed between the rounded corner arc surface of the second convex part and the two side parts at the bent part of the inner cavity body.

[0012] Further, a slot is also formed in the plug, and the first convex part and the second convex part are both arranged in the slot;

[0013] The gas guiding part is further provided with a first jack communicating with the gas guiding cavity, and a second jack is formed at the bent part of the inner cavity body. The outer side walls of the first jack and the second jack extend outwards and form insertion blocks;

[0014] When the plug is connected to the body, the first convex part is inserted into the first jack, the second convex part is inserted into the second jack, and the insertion block is inserted into the slot and abuts against the bottom wall of the slot to form a seal.

[0015] Further, a first connecting plate and a second connecting plate are also provided on the outer side wall of the first jack. A first mounting hole is formed in the first connecting plate, and a second mounting hole is formed in the second connecting plate;

[0016] A third connecting plate is convexly provided on the plug at the position corresponding to the first connecting plate, and a fourth connecting plate is convexly provided at the position corresponding to the second connecting plate. A first through hole is formed in the third connecting plate, and a second through hole is formed in the fourth connecting plate.

[0017] Further, the plug, the first convex part and the second convex part are integrally formed.

[0018] Further, the external injection tube includes a horizontally arranged external intake pipe and a vertically arranged external exhaust pipe. One end of the external intake pipe forms the external air inlet, the other end of the external intake pipe is connected to one end of the gas guiding part, the bottom end of the external exhaust pipe is connected to the other end of the gas guiding part, and the top end opening of the external exhaust pipe forms the external air outlet;

[0019] The inner injection pipe includes a horizontally arranged inner intake pipe and a vertically arranged inner outlet pipe. One end of the inner intake pipe forms the inner intake port, the other end of the inner intake pipe is connected to the bottom end of the inner outlet pipe, and the top opening of the inner outlet pipe forms the inner outlet port.

[0020] Further, the inner outlet pipe is located inside the outer outlet pipe, and connecting ribs are provided between the outer side wall of the inner outlet pipe and the inner side wall of the outer outlet pipe.

[0021] Further, the diameter of the outer intake pipe is larger than that of the inner intake pipe.

[0022] Further, it further includes a sealing door plate. The inner intake port is connected to the outer intake port and is provided with a card slot. A pin and a screw hole are provided in the card slot. Corresponding to the position of the pin on the sealing door plate, a card hole is provided, and corresponding to the position of the screw hole, a third through hole is provided;

[0023] The sealing door plate is snap - connected in the card slot. The card hole is snap - connected with the pin, and is fixed by passing a fastener through the third through hole and screwing it with the screw hole.

[0024] Further, the plug, the inner injection pipe and the outer injection pipe are all made of aluminum alloy material.

[0025] In summary, the utility model has the following technical effects:

[0026] 1. For the burner head of the utility model, the body is made by the core - pulling die - casting process, and the plug is made by the die - casting process. The plug has the same manufacturing process as the body and can be designed on a set of forming molds, reducing the production and manufacturing costs, and at the same time improving the production efficiency of the burner head.

[0027] 2. For the burner head of the utility model, a slot is opened on the plug. When the first insertion block and the second insertion block on the outer side walls of the first insertion hole and the second insertion hole are inserted into the first insertion hole and the second insertion hole respectively, the insertion block is inserted into the slot and abuts against the bottom wall of the slot, so as to improve the sealing performance at the connection between the plug and the inner injection pipe and the outer injection pipe, avoid air leakage at the connection, and enhance the safety of using the burner head.

[0028] 3. For the burner head of the utility model, a first connecting plate and a second connecting plate are further provided on the outer side wall of the first insertion hole, and a third connecting plate and a fourth connecting plate are provided at corresponding positions on the plug. The plug is connected to the inner injection pipe and the outer injection pipe by screwing through the first through hole and the first installation hole with a screw, and by screwing through the second through hole and the second installation hole with a screw, so as to improve the firmness of the connection between the plug and the inner injection pipe and the outer injection pipe, and at the same time further improve the sealing performance at the connection between the plug and the inner injection pipe and the outer injection pipe. Description of the Drawings

[0029] Figure 1 Structural schematic diagram of the burner head of the present utility model;

[0030] Figure 2 Exploded schematic diagram of the burner head of the present utility model;

[0031] Figure 3 Partial sectional schematic diagram of the burner head of the present utility model;

[0032] Figure 4 is Figure 3 Enlarged schematic diagram of part A in

[0033] Figure 5 Structural schematic diagram of the inner ejector pipe and the outer ejector pipe in the burner head of the present utility model;

[0034] Figure 6 Structural schematic diagram of the inner ejector pipe and the outer ejector pipe in the burner head of the present utility model from another perspective;

[0035] Figure 7 Structural schematic diagram of the plug in the burner head of the present utility model;

[0036] Figure 8 Structural schematic diagram of the plug in the burner head of the present utility model from another perspective;

[0037] Figure 9 Structural schematic diagram of the sealing door plate in the burner head of the present utility model.

[0038] Among them, the meanings of the reference numerals are as follows:

[0039] 1. Inner ejector pipe; 11. Inner intake pipe; 111. Inner intake port; 112. Card slot; 1121. Screw hole; 1122. Pin; 12. Inner outlet pipe; 121. Inner outlet port; 13. Second jack; 2. Outer ejector pipe; 21. Outer intake pipe; 211. Outer intake port; 22. Outer outlet pipe; 221. Outer outlet port; 23. Air guiding part; 231. Air guiding cavity; 2311. First jack; 2312. Plug; 232. First connecting plate; 2321. First mounting hole; 233. Second connecting plate; 2331. Second mounting hole; 24. Connecting rib; 25. Connecting column; 26. Connecting edge; 3. Plug; 31. Slot; 32. First protrusion; 321. First cavity; 33. Second protrusion; 331. Second cavity; 34. Third connecting plate; 341. First through hole; 35. Fourth connecting plate; 351. Second through hole; 4. Sealing door plate; 41. Third through hole; 42. Card hole; 43. Inner intake interface; 44. Outer intake interface; 45. Concave hole; 46. Notch. Specific embodiments

[0040] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0041] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred module or element 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 utility model.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0043] As Figures 1-9 shown, a new type of burner head includes a body and a plug 3. The body is made by a core-pulling and split-mold process and includes an inner ejector tube 1 and an outer ejector tube 2. The inner ejector tube 1 is bent and has an inner air inlet 111 at one end and an inner air outlet 121 at the other end. An inner cavity body that is bent and communicates the inner air inlet 111 and the inner air outlet 121 is provided inside the inner ejector tube 1. The outer ejector tube 2 is provided with an outer air inlet 211, an outer air outlet 221, and a gas guiding portion 23. A gas guiding cavity 231 that communicates the outer air inlet 211 and the outer air outlet 221 is provided inside the gas guiding portion 23. The plug 3 is made by a split-mold process and is provided with a first protrusion 32 and a second protrusion 33 with rounded corners. The plug 3 is detachably connected to the body. The first protrusion 32 is located inside the gas guiding cavity 231, and the second protrusion 33 is located at the bent portion of the inner ejector tube 1, so that the bent portion of the inner cavity body has a rounded corner transition and the gas guiding cavity 231 has an arc transition. Therefore, the plug 3 and the body have the same manufacturing process and can be designed on a set of molding dies, reducing the production and manufacturing costs and improving the production efficiency of the burner head at the same time.

[0044] Based on the above structure, the body is manufactured by the core-pulling and mold-splitting process, that is, the inner injection tube 1 and the outer injection tube 2 are manufactured by the core-pulling and mold-splitting process. Specifically, the inner injection tube 1 and the outer injection tube 2 are molded and demolded through the combination and separation of the moving mold and the fixed mold, and core-pulling is achieved during the mold-splitting process to integrally form the inner cavity of the inner injection tube 1 and the air guide cavity 231 of the outer injection tube 2; the plug 3 is manufactured by the mold-splitting process. Thus, the plug 3, the inner injection tube 1, and the outer injection tube 2 can be designed on a set of molding molds, and only the inner injection tube 1 and the outer injection tube 2 use the core-pulling process, which not only reduces the manufacturing difficulty of the burner head, but also improves the production efficiency of the burner head because the inner injection tube 1, the outer injection tube 2, and the plug 3 can be produced by the same set of molds.

[0045] Furthermore, arc-shaped grooves extending along the arc direction are also provided on the rounded arc surfaces of the first protrusion 32 and the second protrusion 33, so that when the plug 3 is connected to the body, a rounded transition is formed between the first protrusion 32 and the two side parts in the air guide cavity 231, and a rounded transition is formed between the rounded arc surface of the second protrusion 33 and the two side parts at the bending part of the inner cavity, thereby improving the air intake efficiency of the inner injection tube 1 and the outer injection tube 2, avoiding the pneumatic resistance generated by right angles, affecting the gas intake efficiency, and causing the problem of poor combustion efficiency.

[0046] Refer to Figures 5-8 , a slot 31 is also provided on the plug 3, and the first protrusion 32 and the second protrusion 33 are both arranged in the slot 31; the air guide part 23 is also provided with a first jack 2311 communicating with the air guide cavity 231, and a second jack 13 is provided at the bending part of the inner cavity. The outer side walls of the first jack 2311 and the second jack 13 are connected and extended outward with inserting blocks 2312; when the plug 3 is connected to the body, the first protrusion 32 is inserted into the first jack 2311, the second protrusion 33 is inserted into the second jack 13, and the inserting blocks 2312 are inserted into the slot 31 and abutted against the bottom wall of the slot 31 to form a seal (refer to Figure 4 ).

[0047] It should be noted that sealant can also be applied in the slot 31 to improve the sealing performance of the first protrusion 32 inserted into the first jack 2311 and the second protrusion 33 inserted into the second jack 13, and avoid air leakage at the joints of the first protrusion 32 inserted into the first jack 2311 and the second protrusion 33 inserted into the second jack 13, causing potential safety hazards.

[0048] Furthermore, a first connecting plate 232 and a second connecting plate 233 are also provided on the outer side wall of the first jack 2311. A first mounting hole 2321 is formed in the first connecting plate 232, and a second mounting hole 2331 is formed in the second connecting plate 233. At a position corresponding to the first connecting plate 232 on the plug 3, a third connecting plate 34 protrudes, and at a position corresponding to the second connecting plate 233, a fourth connecting plate 35 protrudes. A first through hole 341 is formed in the third connecting plate 34, and a second through hole 351 is formed in the fourth connecting plate 35.

[0049] Specifically, when the plug 3 is connected to the inner ejector tube 1 and the outer ejector tube 2, the plug 3 can be fixedly connected to the first mounting hole 2321 by passing a screw through the first through hole 341, and fixedly connected to the second mounting hole 2331 by passing a screw through the second through hole 351, so as to improve the firmness of the connection between the plug 3 and the inner ejector tube 1 and the outer ejector tube 2, and at the same time further improve the sealing effect at the connection between the plug 3 and the inner ejector tube 1 and the outer ejector tube 2.

[0050] It should be noted that in this embodiment, the first mounting hole 2321 and the second mounting hole 2331 can be screw holes. Of course, the first mounting hole 2321 and the second mounting hole 2331 can also be through holes. After the screw is connected to the first mounting hole 2321 and the second mounting hole 2331, the plug 3 can be fixed by tightening with a nut.

[0051] Furthermore, in this embodiment, the plug 3, the first protrusion 32, and the second protrusion 33 are formed by an integral die-casting process.

[0052] It should be noted that a first concave cavity 321 is further provided at the bottom of the first protrusion 32, and a second concave cavity 331 is further provided at the bottom of the second protrusion 33. The first concave cavity 321 and the second concave cavity 331 are used for reducing the material of the plug 3, reducing the overall gravity of the plug 3 and the production cost. Of course, the first concave cavity 321 and the second concave cavity 331 will not affect the structural strength of the first protrusion 32 and the second protrusion 33.

[0053] Refer to again Figure 5, the external ejector tube 2 includes a horizontally arranged external intake pipe 21 and a vertically arranged external exhaust pipe 22. One end of the external intake pipe 21 forms an external air inlet 211, the other end of the external intake pipe 21 is connected to one end of the air guiding part 23, the bottom end of the external exhaust pipe 22 is connected to the other end of the air guiding part 23, and the top end opening of the external exhaust pipe 22 forms the external air outlet 221, which is used to communicate with the outer ring channel of the burner; the internal ejector tube 1 includes a horizontally arranged internal intake pipe 11 and a vertically arranged internal exhaust pipe 12. One end of the internal intake pipe 11 forms an internal air inlet 111, the other end of the internal intake pipe 11 is connected to the bottom end of the internal exhaust pipe 12, and the top end opening of the internal exhaust pipe 12 forms an internal air outlet 121, which is used to communicate with the inner ring channel of the burner.

[0054] It should be noted that several connecting columns 25 for connecting and fixing with the burner are also provided on the outer side wall of the external exhaust pipe 22, and connecting edges 26 for connecting and fixing are also provided at the bottom of the external ejector tube 2 and the bottom of the internal ejector tube 1, so that the internal ejector tube 1 and the external ejector tube 2 are fixedly connected to the base of the cooking stove.

[0055] Specifically, the internal exhaust pipe 12 is located inside the external exhaust pipe 22, and connecting ribs 24 are provided between the outer side wall of the internal exhaust pipe 12 and the inner side wall of the external exhaust pipe 22. Among them, the diameter of the external intake pipe 21 is larger than that of the internal intake pipe 11.

[0056] Refer to Figure 9 , the burner head of the present utility model further includes a sealing door plate 4. The internal air inlet 111 is connected to the external air inlet 211 and is provided with a card slot 112. A pin 1122 and a threaded hole 1121 are provided in the card slot 112. Corresponding to the position of the pin 1122 on the sealing door plate 4, a card hole 42 is provided, and corresponding to the position of the threaded hole 1121, a third through hole 41 is provided; the sealing door plate 4 is snap-fitted into the card slot 112, the card hole 42 is snap-fitted with the pin 1122, and is fixed by screwing a fastener through the third through hole 41 and screwing it with the threaded hole 1121.

[0057] Specifically, the sealing door plate 4 is further provided with an internal air inlet interface 43 and an external air inlet interface 44 for connecting the gas pipeline, and the sealing door plate 4 is further provided with concave holes 45 and notches 46 for air to enter the internal air inlet 111 and the external air inlet 211, and two of each of the concave holes 45 and notches 46 are provided.

[0058] It should be noted that in this embodiment, the sealing door plate 4 can also be manufactured by the same die splitting process as the plug. Therefore, the sealing door plate 4, the internal ejector tube 1, the external ejector tube 2 and the plug 3 can be commonly designed on a set of molds for manufacturing, thereby improving the production efficiency of the burner head.

[0059] Furthermore, in this embodiment, the plug 3, the internal ejector tube 1 and the external ejector tube 2 are all made of aluminum alloy material.

[0060] It should be noted that in this embodiment, the mold splitting process is the process of closing or splitting the moving mold and the fixed mold.

[0061] In summary, for the burner head of the present utility model, the body is made by the core-pulling mold splitting process, and the plug 3 is made by the mold splitting process. The plug 3 has the same manufacturing process as the body and can be designed on a set of molding molds, reducing the production and manufacturing costs and improving the production efficiency of the burner head at the same time.

[0062] For the burner head of the present utility model, a slot 31 is formed on the plug 3. When the first insertion hole 2311 and the outer side wall of the second insertion hole 13 form an insertion block 2312, and the first protrusion 32 is inserted into the first insertion hole 2311 and the second protrusion 33 is inserted into the second insertion hole 13, the insertion block 2312 is inserted into the slot 31 and abuts against the bottom wall of the slot 31 to improve the sealing performance at the connection between the plug 3 and the inner injection pipe 1 and the outer injection pipe 2, avoid air leakage at the connection, and enhance the safety of using the burner head.

[0063] For the burner head of the present utility model, a first connecting plate 232 and a second connecting plate 233 are further provided on the outer side wall of the first insertion hole 2311. Corresponding positions on the plug 3 are provided with a third connecting plate 34 and a fourth connecting plate 35. The plug 3 is connected to the inner injection pipe 1 and the outer injection pipe 2 by screwing through the first through hole 341 and connecting with the first mounting hole 2321, and by screwing through the second through hole 351 and connecting with the second mounting hole 2331, so as to improve the firmness of the connection between the plug 3 and the inner injection pipe 1 and the outer injection pipe 2, and further improve the sealing performance at the connection between the plug 3 and the inner injection pipe 1 and the outer injection pipe 2.

[0064] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0065] It should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred module or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0066] In addition, in the description of the present utility model, the meanings of "a plurality of" and "several" are two or more, unless otherwise clearly and specifically defined.

[0067] The technical means disclosed by the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions formed by any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A new type of burner head, characterized in that: include: The main body is made by a core-pulling split mold process and includes an inner ejection tube and an outer ejection tube, wherein the inner ejection tube is bent and has an inner air inlet at one end and an inner air outlet at the other end, and an inner cavity communicating with the inner air inlet and the inner air outlet and having a bent shape is provided inside the inner ejection tube; The external ejector tube is provided with an external air inlet, an external air outlet and an air guide portion, and the air guide portion is provided with an air guide cavity connecting the external air inlet with the external air outlet; The plug is made by a split-mold process and is provided with a first protrusion and a second protrusion with rounded corners. The plug is detachably connected to the main body, the first protrusion is located in the air guide cavity, and the second protrusion is located at the bend of the inner ejection tube.

2. The novel burner head according to claim 1 is characterized in that: The rounded arc surfaces of the first protrusion and the second protrusion are also provided with arc-shaped grooves extending along the arc direction thereof, so that when the plug is connected to the main body, there is a rounded transition between the first protrusion and the two side parts in the air guide cavity, and there is a rounded transition between the rounded arc surfaces of the two protrusions and the two side parts of the bending part of the inner cavity.

3. The new furnace head according to claim 2 is characterized in that: The plug is also provided with a slot, and the first protrusion and the second protrusion are both arranged in the slot; The air guide portion is further provided with a first plug hole connected to the air guide cavity, and the inner cavity is provided with a second plug hole at the bend, and the outer side walls of the first plug hole and the second plug hole are connected and extend outward to form an insert block; When the plug is connected to the body, the first protrusion is inserted into the first insertion hole, the second protrusion is inserted into the second insertion hole, and the plug is inserted into the slot and abuts against the bottom wall of the slot to form a seal.

4. The new furnace head according to claim 3 is characterized in that: A first connecting plate and a second connecting plate are also provided on the outer side wall of the first plug hole, the first connecting plate is provided with a first mounting hole, and the second connecting plate is provided with a second mounting hole; A third connecting plate is protruded from the plug at a position corresponding to the first connecting plate, and a fourth connecting plate is protruded from the plug at a position corresponding to the second connecting plate. A first through hole is formed on the third connecting plate, and a second through hole is formed on the fourth connecting plate.

5. The novel burner head according to any one of claims 1 to 4, characterized in that: The plug is integrally formed with the first protrusion and the second protrusion.

6. The novel burner head according to any one of claims 1 to 4, characterized in that: The external ejection pipe includes a horizontal external air inlet pipe and a vertically arranged external air outlet pipe, one end of the external air inlet pipe forms the external air inlet port, the other end of the external air inlet pipe is connected to one end of the air guide portion, the bottom end of the external air outlet pipe is connected to the other end of the air guide portion, and the top end of the external air outlet pipe opens to form the external air outlet; The inner ejector pipe includes a horizontally arranged inner air inlet pipe and a vertically arranged inner air outlet pipe, one end of the inner air inlet pipe forms the inner air inlet port, the other end of the inner air inlet pipe is connected to the bottom end of the inner air outlet pipe, and the top end opening of the inner air outlet pipe forms the inner air outlet port.

7. The novel burner head according to claim 6 is characterized in that: The inner air outlet pipe is located inside the outer air outlet pipe, and a connecting rib is provided between the outer side wall of the inner air outlet pipe and the inner side wall of the outer air outlet pipe.

8. The novel burner head according to claim 6 is characterized in that: The diameter of the outer air intake pipe is greater than the diameter of the inner air intake pipe.

9. The novel burner head according to any one of claims 1 to 4, characterized in that: It also includes a door sealing plate, the inner air inlet is connected to the outer air inlet and is provided with a slot, a pin and a screw hole are provided in the slot, and a slot is provided at a position corresponding to the pin on the door sealing plate and a third through hole is provided at a position corresponding to the screw hole; The door sealing plate is clamped in the clamping groove, the clamping hole is clamped with the pin, and a fastener passes through the third through hole and is screwed with the screw hole to achieve fixation.

10. The novel burner head according to any one of claims 1 to 4, characterized in that: The plug, the inner ejection tube and the outer ejection tube are all made of aluminum alloy material.

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