Multi-flame igniter and vaporizer thereof

Abstract

A vaporizer of a multi-flame igniter comprises an air-mixing tube (1), a first connecting seat (2) and a plurality of injection heads (4), wherein a mounting recess with an opening at the upper end is formed on the first connecting seat (2); the air-mixing tube (1) is fixed to the first connecting seat (2); a vent hole (21) communicating the air-mixing tube (1) with the mounting recess is provided in the bottom of the mounting recess; a main air outlet (41) and a plurality of auxiliary air outlets (42) are provided in each of the injection heads (4); the plurality of injection heads (4) are directly or indirectly mounted in the mounting recess of the first connecting seat (2); and after the injection heads (4) are mounted in place, an air passage gap, which communicates the vent hole (21) with the main air outlets (41) and the auxiliary air outlets (42) of the plurality of injection heads (4), is formed between the bottoms of the injection heads (4) and the bottom of the mounting recess.

Description

Multi-flame igniter and gasification furnace thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of igniter equipment, in particular to a multi-flame igniter and a gasification furnace thereof. BACKGROUND

[0002] The straight-through igniter in the prior art generally has single-fire straight-through, double-fire straight-through, triple-fire straight-through, quadruple-fire straight-through, and quintuple-fire straight-through according to the number of flame jets. For a multi-flame straight-through igniter with more than one flame (single-fire), each straight-through is separately provided in the prior art, and each straight-through is separately communicated with a gas storage part.

[0003] A multi-head flame mixing igniter in a lighter is disclosed in Chinese Utility Model Patent Publication No. CN218269152U, which includes a support and a gas outlet separator installed in the support. A combustion ceramic cup is installed on the upper end of the support, and at least one pagoda column is installed on the combustion ceramic cup. The lower end of the pagoda column is inserted into the gas outlet separator. According to the embodiments, for a triple-fire straight-through scheme, three pagoda columns are used in cooperation with the gas outlet separator. It can be seen that each straight-through (straight-through pagoda) is separately provided in this scheme.

[0004] The multi-flame straight-through igniter device with multiple straight-throughs provided separately in the prior art has the following disadvantages:

[0005] (1) The cost of multiple straight-through pagodas is high, and the production cost of the entire multi-flame igniter is high.

[0006] (2) Each straight-through pagoda needs to be separately threadedly fastened to the support, and the installation process is relatively complex. During the actual assembly, the space inside the ceramic cup is small, and it is not easy to operate when threadedly connecting the single straight-through pagoda, as the adjacent straight-through pagoda head is easily touched.

[0007] (3) A silver sheet (booster sheet) is provided in each pagoda column of each straight-through pagoda to achieve pressure boosting. However, due to the manufacturing process limitations in the prior art, there are slight differences between the silver sheets, which leads to unevenness in the height and strength of the multiple flames in the multi-flame igniter, even though the air amount entering each straight-through pagoda through the gas outlet separator is the same. SUMMARY

[0008] To solve the above problems, the purpose of the present application is to provide a multi-flame igniter and a gasification furnace thereof, which connects multiple jet heads through a same straight-through air mixing pipe, so that the flames of the jet heads are uniform, and the production cost can be reduced and the assembly process can be simplified.

[0009] The gasification furnace of the multi-flame igniter comprises an air mixing pipe, a first connecting base and a plurality of spray heads; the first connecting base is provided with an installation groove with an open upper end, the air mixing pipe is fixed on the first connecting base, the bottom of the installation groove is provided with a ventilation hole communicating with the air mixing pipe and the installation groove; the spray head is provided with a main air outlet hole and a plurality of auxiliary air outlet holes, the plurality of spray heads are directly or indirectly installed in the installation groove of the first connecting base, and the bottom of the spray head and the bottom of the installation groove form a ventilation gap communicating with the ventilation hole and the main air outlet hole and the auxiliary air outlet hole of the plurality of spray heads after the spray head is installed in place.

[0010] Preferably, the ventilation gap comprises an air storage chamber, the bottom of the first connecting base forms the air storage chamber, and the air storage chamber communicates with the ventilation hole and the main air outlet hole and the auxiliary air outlet hole of the plurality of spray heads in the installation groove.

[0011] Preferably, the bottom of the second installation base near the bottom surface of one side of the installation groove is provided with a gas guide channel respectively communicating with the main air outlet hole of each spray head.

[0012] Preferably, the plurality of gas guide channels are communicated with each other and the communication point is located directly above the ventilation hole.

[0013] Preferably, the bottom of the installation groove is concave downward to form a two-layer cavity, specifically, the bottom of the installation groove is concave downward to form an upper layer cavity, the bottom of the upper layer cavity is further concave downward to form a lower layer cavity, and the lower layer cavity is communicated with the ventilation hole; the projection of the main air outlet hole of the spray head on the second installation base on the bottom of the installation groove coincides with the lower layer cavity, and the projection of the auxiliary air outlet hole on the second installation base on the bottom of the installation groove coincides with the upper layer cavity and most of them are located outside the lower layer cavity.

[0014] Preferably, the second connecting base is included, the plurality of spray heads are fixed on the same second connecting base, and the ventilation gap is defined by the cooperation of the second connecting base and the bottom of the installation groove.

[0015] Preferably, the plurality of spray heads are integrally formed with the second connecting base.

[0016] Preferably, a lifting step is formed in the installation groove, the bottom of the second connecting base is limited and matched with the lifting step, and a gap between the second connecting base and the bottom of the installation groove serves as an air storage chamber or a ventilation gap.

[0017] Preferably, the outer diameter of the second connecting base matches the inner diameter of the installation groove, the second connecting base is clamped into the installation groove, and a sealing strip is arranged between the outer side wall of the second connecting base and the inner side wall of the installation groove of the first connecting base.

[0018] Preferably, the first connecting base and the air mixing pipe are integrally formed as a whole; or the first connecting base and the air mixing pipe are independent components and are connected with each other.

[0019] Preferably, the device includes a ceramic cup and a metal cup, with the ceramic cup located inside the metal cup. The lower end of the air mixing tube passes through the ceramic cup and the metal cup sequentially, and the air mixing tube is threadedly connected to the ceramic cup and / or the metal cup.

[0020] Preferably, the device includes a ceramic cup and a metal cup. The bottom of the ceramic cup has a first through hole for the air mixing tube to pass downwards. The outer diameter of the bottom of the first connecting seat is larger than the outer diameter of the first through hole. The bottom surface of the first connecting seat is in a limiting fit with the upper end surface of the bottom surface of the ceramic cup. The ceramic cup is located inside the metal cup. The metal cup has a second positioning step arranged radially inside. The lower end surface of the bottom surface of the ceramic cup is in a positioning fit with the second step. The second positioning step has a second through hole arranged coaxially with the first through hole. The lower part of the air mixing tube passes through the first through hole and the second through hole in sequence. A locking member is locked onto the outer wall of the air mixing tube. The outer diameter of the locking member is larger than the diameter of the second through hole. The locking member is in a positioning fit with the lower end surface of the second step.

[0021] Preferably, a limiting step is formed on the outer wall of the air mixing pipe, and the engaging member is disposed on the limiting step.

[0022] The purpose of this application is also to provide a multi-flame igniter, including the gasifier as described in any of the preceding claims.

[0023] This application has the following advantages due to the adoption of the above-mentioned scheme:

[0024] The aforementioned gasifier connects multiple injectors through only one and only air mixing pipe. The mixed gas enters multiple injectors through the same air mixing pipe, resulting in uniform and highly consistent flames across all injectors. Furthermore, compared to existing technologies that use multiple independent direct-flow towers, the reduction in the number of air mixing pipes and their internal filtration and pressurization structures significantly lowers production costs. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the structure of the dual-flame gasifier involved in Embodiment 1;

[0026] Figure 2 is a structural schematic diagram of Figure 1 from another angle;

[0027] Figure 3 is a cross-sectional view along line AA of Figure 1;

[0028] Figure 4 is a structural schematic diagram of the spray head and second connecting seat assembly in Embodiment 1;

[0029] Figure 5 is a structural schematic diagram of Figure 4 from another angle;

[0030] Figure 6 is a structural schematic diagram of the first connector and air mixing pipe assembly in Embodiment 1;

[0031] Figure 7 is a cross-sectional view of the dual-flame gasifier involved in Example 2 (the connecting parts are not shown).

[0032] Figure 8 is a schematic diagram of the bottom structure of the nozzle and second connecting seat assembly in Embodiment 2.

[0033] Figure 9 is a structural schematic diagram of the first connector and air mixing pipe assembly in Embodiment 2.

[0034] Figure label:

[0035] Air mixing pipe 1, limiting step 11, first connecting seat 2, vent 21, lifting step 22, second connecting seat 3, slot 31, injection head 4, main air outlet 41, auxiliary air outlet 42, ceramic cup 5, metal cup 6, locking piece 7, sealing strip 8, air storage chamber 91, upper chamber 911, lower chamber 912, air guide channel 92. Detailed Implementation

[0036] The embodiments of the present invention are described in detail below. Example 1:

[0037] This embodiment provides a gasifier with a multi-flame igniter, including an air mixing pipe 1, a first connecting seat 2, and multiple injection heads 4; the first connecting seat 2 has an upper open mounting groove, the air mixing pipe 1 is fixed on the first connecting seat 2, and the bottom of the mounting groove is provided with a vent hole 21 connecting the air mixing pipe 1 and the mounting groove; the injection head 4 is provided with a main air outlet 41 and multiple auxiliary air outlets 42, and the multiple injection heads 4 are directly or indirectly installed in the mounting groove of the first connecting seat 2. After the injection head 4 is installed in place, a ventilation gap is formed between the bottom of the injection head 4 and the bottom of the mounting groove, connecting the through hole and the main air outlet 41 and auxiliary air outlets 42 of the multiple injection heads 4.

[0038] The air mixing pipe 1, also known as a pagoda column or air outlet pipe in the prior art, has a structure consisting of silver sheets and mesh panels arranged from top to bottom inside its lower end. The specific configuration and working principle of the air mixing pipe 1 and its internal structure are standard in the art and will not be described in detail here. The upper part of the air mixing pipe 1 is fixed to the first connecting seat 2. Multiple injection heads 4 are installed in the same mounting groove of the first connecting seat 2, thereby enabling one air mixing pipe 1 to connect multiple injection heads 4 and achieve multi-flame ignition. In one embodiment, the first connecting seat 2 and the air mixing pipe 1 are integrally formed structures, and the first connecting seat 2 and the air mixing pipe 1 cannot be separated during the overall processing. For example, in a specific embodiment, the first connecting seat 2 and the air mixing pipe 1 are made of zinc alloy or other metal materials. In this solution, the first connecting seat 2 and the air mixing pipe 1 can be obtained as a single component through casting. This configuration simplifies the assembly and processing steps, eliminating the need to process the connection structure between the first connecting seat 2 and the air mixing pipe 1. In other embodiments, the first connecting seat 2 and the air mixing pipe 1 are independent components that are connected to each other and can be processed independently. For example, in a specific embodiment, the air mixing pipe 1 and the first connecting seat 2 can be plugged in or threaded together for fixation.

[0039] Multiple nozzles 4 are directly or indirectly installed in the mounting groove of the first connecting seat 2. Each nozzle 4 has a main air outlet 41 located on the centerline and multiple auxiliary air outlets 42 located around the main air outlet 41. The diameter of the main air outlet 41 is larger than that of the auxiliary air outlets 42. Most of the mixed gas entering from the air mixing pipe 1 enters the main air outlet 41, and a small portion enters the auxiliary air outlets 42. A gas storage chamber 91 is formed at the bottom of the first connecting seat 2. The gas storage chamber 91 is connected to the vent 21. The mixed gas entering from above the air mixing pipe 1 enters the gas storage chamber 91. The main air outlet 41 and auxiliary air outlets 42 of each nozzle 4 installed in the mounting groove are connected to the gas storage chamber 91. The mixed air in the gas storage chamber 91 enters the main air outlet 41 and auxiliary air outlets 42 of each nozzle 4 in the mounting groove. Therefore, in this scheme, the gas storage chamber 91 is connected to the air mixing pipe 1 and multiple nozzles 4 on the one hand, and on the other hand, the gas entering the gas storage chamber 91 is quickly and evenly separated into the multiple nozzles 4 connected to it, so that the flames of each nozzle 4 are consistent in the end.

[0040] In a preferred embodiment, a second connecting seat 3 can be provided on the upper part of the air storage chamber 91. The second connecting seat 3 cooperates with the bottom of the mounting groove to define the ventilation gap or the air storage chamber 91, and multiple injection heads 4 are fixed on the second connecting seat 3. In an optional embodiment, the second connecting seat 3 is integrally formed with the mounting groove and is part of the mounting groove. The second connecting seat 3 is non-removably disposed in the mounting groove.

[0041] In other alternative embodiments, the second connecting seat 3 can be a structure independent of the mounting slot. Here, "independent of the mounting slot" means that it is independent during production and detachably connected to the mounting slot during installation. With this configuration, during assembly, the nozzle 4 and the second connecting seat 3 can be installed first, and then the second connecting seat 3 and the nozzle 4 can be installed as a whole onto the first connecting seat 2. In a specific embodiment, the second connecting seat 3 and the mounting slot can be a snap-fit ​​connection. This snap-fit ​​connection is suitable for mounting slots of various shapes, offering strong adaptability and simple assembly. Preferably, to ensure the airtightness of the gas storage chamber 91, when using a snap-fit ​​connection, a sealing strip 8 is provided at the connection between the second connecting seat 3 and the mounting slot. Furthermore, to facilitate the installation of the sealing strip 8, a groove 31 is provided along the outer circumference of the second connecting seat 3, and the sealing strip 8 is disposed in this groove 31 to prevent displacement of the sealing strip 8 during the assembly of the second connecting seat 3 into the groove 31. The sealing strip 8 is made of rubber. After being installed into the slot 31 of the second connecting seat 3, a portion of the sealing strip 8 protrudes from the slot 31. Thus, after the second connecting seat 3 is in place, the sealing strip 8 is pressed between the second connecting seat 3 and the side wall of the mounting groove, achieving a sealing effect. Those skilled in the art will understand that the sealing strip 8 can also be made of other materials that can achieve the same effect. In other alternative embodiments, the second connecting seat 3 and the mounting groove can also use common connection structures such as threaded connections.

[0042] Preferably, a lifting step 22 is formed within the mounting groove, and the second connecting seat 3 is positioned on the step, thereby creating a gap between the second connecting seat 3 and the bottom. This gap serves as the air storage chamber 91 or the ventilation gap. By setting the step, the depth of the air storage chamber 91 can be easily determined, and the second connecting seat 3 can be easily positioned, preventing it from shifting during use.

[0043] In one optional embodiment, a connecting structure for connecting each spray head 4 is provided on the second connecting seat 3, and multiple independent spray heads 4 are respectively installed on the second connecting seat 3. As another variant, the second connecting seat 3 and multiple spray heads 4 are integrally formed. Since the spray heads 4 are made of metal materials such as zinc alloy, they are cast during production, so it is technically feasible to cast multiple spray heads 4 and the second connecting seat 3 as one piece during production. This arrangement simplifies the production and installation process, eliminating the need to process the connecting structure between the second connecting seat 3 and the spray heads 4, and allowing the integral structure to be directly assembled into the mounting groove of the first connecting seat 2 during installation.

[0044] Preferably, the ventilation gap also includes a gas guiding channel 92, through which most of the gas in the gas storage chamber 91 is guided into the main exhaust port 41 of the injector 4, ensuring the flame intensity output by each injector 4. Specifically, the gas guiding channel 92 is a channel structure that guides the gas in the gas storage chamber 91 into the main exhaust port 41. This embodiment is illustrated using a dual-flame igniter. As shown in Figures 1 and 2, an optional configuration is provided. In this embodiment, multiple injectors 4 are fixed on the second connecting seat 3. The bottom of the second mounting seat is provided with gas guiding channels 92 that connect to the main exhaust ports 41 of each injector 4. The multiple gas guiding channels 92 are interconnected, and the connection point is located directly above the ventilation port 21. Thus, most of the mixed gas entering the gas storage chamber 91 from the air mixing pipe 1 can enter the main exhaust port 41 of each injector 4 through the gas guiding channel 92, while the remaining gas enters the auxiliary exhaust port 42.

[0045] In this embodiment, the ignition device of the multi-flame igniter includes a ceramic cup 5 and a metal cup 6. The structure of the ceramic cup 5 and the metal cup 6 in this embodiment is as shown in the utility model patent application number 2023230324983 filed by the applicant. The bottom of the ceramic cup 5 is provided with a first through hole for the air mixing tube 1 to pass downward. The outer diameter of the bottom of the first connecting seat 2 is larger than the outer diameter of the first through hole. The bottom surface of the first connecting seat 2 is limited and matched with the upper end surface of the bottom surface of the ceramic cup 5. The ceramic cup 5 is located inside the metal cup 6. The metal cup 6 is provided with a second positioning step arranged radially inside. The lower end surface of the bottom surface of the ceramic cup 5 is positioned and matched with the second step. The second positioning step is provided with a second through hole arranged coaxially with the first through hole. The lower part of the air mixing tube 1 passes through the first through hole and the second through hole in sequence. The engaging member 7 is engaged on the outer wall of the air mixing tube 1. The outer diameter of the engaging member 7 is larger than the diameter of the second through hole. The engaging member 7 is positioned and matched with the lower end surface of the second step. During assembly, the first step is to assemble the spray head 4 with the first mounting base and the air mixing pipe 1 to form an assembly of the spray head 4 and the air mixing pipe 1. Then, this assembly is inserted from top to bottom into the first through hole at the bottom of the ceramic cup 5 until the bottom surface of the first mounting base abuts against the bottom surface of the ceramic cup 5. Next, the assembled assembly of the spray head 4, the first mounting base, the air mixing pipe 1, and the ceramic cup 5 is inserted through the upper opening of the metal cup 6, so that the lower part of the air mixing pipe 1 extends downward from the second through hole and abuts against the second positioning step of the metal cup 6. Then, the locking member 7 is inserted until it abuts against the second positioning step from below to lock the position. This structure achieves axial locking of the air mixing pipe 1 relative to the ceramic cup 5 and the metal cup 6 by locking the position from the bottom of the first mounting base and from below by locking the position of the locking member 7. This structure eliminates the need for threaded machining on small components, reducing machining difficulty. All components are directly locked together by a single locking member 7, simplifying the connection structure. Furthermore, the assembly method of the locking component 7 is relatively simple. Therefore, the above features combined can improve the assembly efficiency of the gasifier. More preferably, a limiting step 11 is formed on the outer wall of the air mixing pipe 1, and the locking component 7 is disposed on the limiting step 11. This facilitates the positioning of the locking component 7 during installation. In a specific embodiment, the locking component 7 can be a retaining spring.

[0046] As will be known to those skilled in the art, in other alternative embodiments, the assembly of the injection head 4, the first mounting base, and the air mixing pipe 1 can also be connected to the ceramic cup 5 and / or the metal cup 6 by threads. Furthermore, the connection between the injection head 4, the first mounting base, and the air mixing pipe 1 can employ any of the connection structures described in the preceding embodiments. Implementation: 2:

[0047] The difference between this embodiment and Embodiment 1 is that the gas storage chamber 91 formed by the downward indentation of the bottom of the mounting groove is a two-layer chamber. Specifically, the bottom of the mounting groove is indented to form an upper chamber 911, and the bottom of the upper chamber 911 is further indented to form a lower chamber 912. The lower chamber 912 is connected to the vent 21. The projection of the main air outlet 41 of the injection head 4 on the bottom of the second mounting base coincides with the lower chamber 912, and the projection of the auxiliary air outlet 42 on the bottom of the mounting groove coincides with the upper chamber 911, and most of them are located outside the lower chamber 912. It should be further explained that most of these are relative concepts. The number of auxiliary air outlets 42 projected onto the bottom of the mounting groove and located inside the lower chamber 912 is 'a', and the number of auxiliary air outlets 42 projected onto the bottom of the mounting groove and located outside the lower chamber 912 is 'b', where a > b. Among these, the overlap between the projections of the main air outlet 41 / auxiliary air outlet 42 onto the bottom of the mounting groove and the upper chamber 911 / lower chamber 912 refers to the overlap between the projections when the projection directions of the main air outlet 41 / auxiliary air outlet 42 and the upper / lower chamber are consistent.

[0048] This embodiment incorporates an ignition device with a dual-flame igniter to further illustrate the beneficial effects of arranging the gas storage chamber 91 as described above. As shown in Figure 2, the two injection heads 4 in this embodiment are fixed in a straight line. The lower mounting groove is also in a straight line, and its front and rear width is the same as or slightly larger than the diameter of the main air outlet 41. This arrangement allows more mixed gas to be aligned with the main air outlet 41, and the overflowing gas diffuses into the auxiliary air outlet 42 in the upper chamber 911. Thus, it is not necessary to set a gas guide channel 92 at the bottom of the second mounting base to achieve the effect of more mixed gas entering the main air outlet 41.

[0049] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gasification furnace with a multi-flame igniter, characterized in that, It includes an air mixing pipe, a first connecting seat, and multiple spray heads; the first connecting seat has a mounting groove with an open top, the air mixing pipe is fixed on the first connecting seat, and the bottom of the mounting groove has a vent hole connecting the air mixing pipe and the mounting groove; the spray head has a main air outlet and multiple auxiliary air outlets, and the multiple spray heads are directly or indirectly installed in the mounting groove of the first connecting seat. After the spray head is installed in place, a ventilation gap is formed between the bottom of the spray head and the bottom of the mounting groove, connecting the vent hole and the main air outlet and auxiliary air outlet of the multiple spray heads.

2. A gasifier with a multi-flame igniter according to claim 1, characterized in that, The ventilation gap includes an air storage chamber. An air storage chamber is formed at the bottom of the first connecting seat. The air storage chamber is connected to the ventilation hole and the main air outlet and auxiliary air outlet of a plurality of nozzles located in the mounting groove.

3. A gasifier with a multi-flame igniter according to claim 2, characterized in that, The bottom surface of the second mounting base, near the mounting groove, is provided with an air guide channel that connects to the main air outlet of each of the nozzles on it.

4. A gasifier with a multi-flame igniter according to claim 3, characterized in that, Multiple air channels are interconnected, and the connection point is located directly above the air vent.

5. A gasifier with a multi-flame igniter according to claim 2, characterized in that, The gas storage chamber formed by the downward indentation at the bottom of the mounting groove is a two-layer chamber. Specifically, the bottom of the mounting groove is indented to form an upper chamber, and the bottom of the upper chamber is further indented to form a lower chamber. The lower chamber is connected to the vent. The projection of the main air outlet of the nozzle on the second mounting seat onto the bottom of the mounting groove coincides with the lower chamber, and the projection of the auxiliary air outlet onto the bottom of the mounting groove coincides with the upper chamber and is mostly located outside the lower chamber.

6. The gasifier according to claim 1, characterized in that, It includes a second connecting seat, and multiple spray heads are fixed on the same second connecting seat. The ventilation gap is defined by the cooperation between the second connecting seat and the bottom of the mounting groove.

7. A gasifier with a multi-flame igniter according to claim 6, characterized in that, Multiple spray heads are integrally formed with the second connecting seat.

8. A gasifier with a multi-flame igniter according to claim 6 or 7, characterized in that, A lifting step is formed in the mounting groove, and the bottom of the second connecting seat is limited to the lifting step. A gap is formed between the second connecting seat and the bottom of the mounting groove as an air storage chamber or ventilation gap.

9. A gasifier with a multi-flame igniter according to claim 8, characterized in that, The outer diameter of the second connector matches the inner diameter of the mounting groove. The second connector is snapped into the mounting groove, and a sealing strip is provided between the outer side wall of the second connector and the inner side wall of the mounting groove of the first connector.

10. A gasifier with a multi-flame igniter according to claim 1, characterized in that, The first connecting seat and the air mixing pipe are integrally formed; or the first connecting seat and the air mixing pipe are independent components, which are connected to each other.

11. A gasifier with a multi-flame igniter according to claim 1, characterized in that, It includes a ceramic cup and a metal cup, with the ceramic cup located inside the metal cup. The lower end of the air mixing tube passes through the ceramic cup and the metal cup sequentially, and the air mixing tube is threadedly connected to the ceramic cup and / or the metal cup.

12. A gasification furnace with a multi-flame igniter as described in claim 1, characterized in that, The device includes a ceramic cup and a metal cup. The bottom of the ceramic cup has a first through hole for an air mixing tube to pass through downwards. The outer diameter of the bottom of the first connecting seat is larger than the outer diameter of the first through hole. The bottom surface of the first connecting seat is in a limiting fit with the upper end surface of the bottom surface of the ceramic cup. The ceramic cup is located inside the metal cup. The metal cup has a second positioning step arranged radially inside. The lower end surface of the bottom surface of the ceramic cup is in a positioning fit with the second step. The second positioning step has a second through hole arranged coaxially with the first through hole. The lower part of the air mixing tube passes through the first through hole and the second through hole in sequence. A locking member is locked onto the outer wall of the air mixing tube. The outer diameter of the locking member is larger than the diameter of the second through hole. The locking member is in a positioning fit with the lower end surface of the second step.

13. A gasifier with a multi-flame igniter according to claim 12, characterized in that, A limiting step is formed on the outer wall of the air mixing pipe, and the engaging component is disposed on the limiting step.

14. A multi-flame igniter, characterized in that, Including the gasifier as described in any one of claims 1-13.

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