A flame gun for the production of spherical powder particles

Abstract

The disclosure provides a flame gun for spherical powder particle preparation, comprising a first shell, a middle part of the first shell is coaxially provided with a discharge hole, which is suitable for outputting a mixture of an oxidizing agent and a raw material powder, a plurality of fuel holes are further arranged in the first shell, the plurality of fuel holes are uniformly and spacedly arranged in the circumferential direction of the discharge hole, the fuel holes are inclined to the axis of the discharge hole, and each fuel hole has the same inclination direction; wherein each fuel hole comprises a first end for inputting fuel and a second end for outputting fuel, in the orthographic projection in the thickness direction of the first shell, the projection of the second end is located between the projection of the first end and the projection of the discharge hole, and the midpoint of the projection of the second end is not collinear with the midpoints of the projections of the first end and the discharge hole.

Description

Technical Field

[0001] This disclosure relates to the field of spherical silicon micropowder preparation technology, and more specifically, to a flame gun for preparing spherical powder particles. Background Technology

[0002] With the development of new materials technology globally, industrial powder materials play an irreplaceable role in modern industry. Among them, silica, due to its abundant reserves and easy accessibility, has become a key industrial raw material. Silica micropowder, as a silica powder processed through complex techniques, possesses high heat resistance, high insulation, good dielectric properties, and a low coefficient of linear expansion, and is widely used in copper-clad laminates, epoxy molding compounds, and electrical insulation materials. In the 5G and semiconductor industries, the application of silica micropowder is shifting from simple fillers to functionalized materials, with increasingly stringent requirements for its particle size, flowability, specific surface area, and other performance indicators. The application of spherical silica powder can significantly enhance these properties.

[0003] The main methods for preparing spherical silica include chemical methods, plasma methods, and flame melting methods. Flame melting is currently the most widely used technology due to its simple process and high output. The principle of this method is to heat the powder to its melting point using a high-temperature flame; after melting, the powder automatically forms spherical shapes due to surface tension. Given the high melting point of silica, during the flame heating process using natural gas as fuel, the flame temperature, length, and interaction time between the powder and the flame must be carefully considered to ensure that the powder can fully absorb heat and achieve efficient energy utilization. Currently, spray guns on the market suffer from low energy utilization, serious energy waste, and unstable product quality due to design flaws.

[0004] Therefore, there is an urgent need for a new type of flame gun for the preparation of spherical powder particles, which can effectively improve energy utilization efficiency and ensure product quality. Summary of the Invention

[0005] In view of this, the present disclosure provides a flame gun for the preparation of spherical powder particles, which uses an inclined fuel hole to guide the injected fuel to form a swirling flow in order to improve combustion efficiency.

[0006] One aspect of this disclosure provides a flame gun for preparing spherical powder particles, comprising a first housing, wherein a discharge port is coaxially disposed in the middle of the first housing for discharging a mixture of oxidant and raw material powder, and a plurality of fuel holes are disposed within the first housing, the plurality of fuel holes being evenly spaced circumferentially from the discharge port, the fuel holes being inclined to the axis of the discharge port, and each fuel hole having the same inclination direction; wherein each fuel hole includes a first end for inputting fuel and a second end for outputting fuel, and in the orthographic projection of the first housing in the thickness direction, the projection of the second end is located between the projection of the first end and the projection of the discharge port, and the midpoint of the projection of the second end is not collinear with the midpoint of the projections of the first end and the discharge port.

[0007] According to an embodiment of this disclosure, a second housing is further included, which is disposed on the first surface of the first housing and is adapted to connect the input end of the discharge port to an external material source; and the second housing is also adapted to connect the first end of the fuel port to an external fuel source.

[0008] According to an embodiment of this disclosure, a feeding interface is provided in the middle of the second housing, and the feeding interface connects the material source and the discharge hole.

[0009] According to an embodiment of this disclosure, the second housing is further provided with a fuel interface, which connects the fuel source and the fuel port.

[0010] According to an embodiment of the present disclosure, the second housing is provided with a plurality of the aforementioned fuel interfaces; the second housing is also provided with a fuel chamber, which is configured in an annular shape to connect the plurality of the aforementioned fuel interfaces and to at least two of the aforementioned fuel holes.

[0011] According to an embodiment of the present disclosure, the first housing is provided with a cold mass inlet and a cold mass outlet communicating with an external cold mass source; the first housing is also provided with a cold mass channel communicating with the cold mass inlet and the cold mass outlet, the cold mass channel being adapted to dissipate heat from the first housing by using the flowing cold mass.

[0012] According to an embodiment of this disclosure, the cold mass inlet and the cold mass outlet are spaced apart on the side wall of the first housing and extend radially in the first housing, respectively.

[0013] According to an embodiment of the present disclosure, the cold mass channel includes an arcuate channel formed on the first surface, the arcuate channel extending around the plurality of fuel holes.

[0014] According to embodiments of this disclosure, a sealing plate is also included, which is configured as an annular shape and installed in a sealing groove formed on the first surface, the sealing plate being adapted to seal the arcuate groove.

[0015] According to an embodiment of the present disclosure, the second housing is provided with a flange extending radially in the circumferential direction, the flange being adapted to connect the first housing and fix the sealing plate in the sealing groove.

[0016] According to embodiments of this disclosure, a discharge hole for discharging a mixture of oxidant and raw material powder is provided at the center of the first shell. Furthermore, multiple fuel holes inclined to the axis of the discharge hole are uniformly spaced around the discharge hole within the first shell. The fuel input and output ends of each fuel hole are not collinear with the projection of the discharge hole in the orthographic projection along the thickness direction of the first shell. The projection of the output end is located inside the projections of both the input end and the discharge hole. This causes the ejected fuel to form a converging vortex, fully mixing with the oxidant ejected from the discharge hole, improving combustion efficiency, and increasing the residence time of the raw material powder in the flame, thereby increasing heat conversion efficiency and helping to reduce energy consumption. Simultaneously, it ensures uniform melting and spheroidization of the raw material powder at high temperatures, thereby improving the preparation quality and production efficiency of spherical powder particles. Attached Figure Description

[0017] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 A perspective view of a first housing according to an embodiment of the present disclosure is schematically shown;

[0019] Figure 2 The diagram schematically illustrates a fuel port and discharge port projected orthogonally in the thickness direction of the first housing according to an embodiment of the present disclosure.

[0020] Figure 3 A first-view perspective perspective view of a flamethrower according to an embodiment of the present disclosure is schematically shown;

[0021] Figure 4 Schematic illustration Figure 3 A second-view perspective perspective of the flamethrower;

[0022] Figure 5 Schematic illustration Figure 3 A cross-sectional view of the flamethrower;

[0023] Figure 6 A perspective view of the second housing according to an embodiment of the present disclosure is schematically shown from a second perspective.

[0024] Figure 7 A perspective view of a sealing plate according to an embodiment of the present disclosure is shown schematically.

[0025] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0026] 1. First shell;

[0027] 11. Discharge hole;

[0028] 12. Fuel port;

[0029] 121. First end;

[0030] 122. The second end;

[0031] 13. Cold intake;

[0032] 14. Cold chain outlet;

[0033] 15. Cold aisle;

[0034] 16. First sealing groove;

[0035] 17. First mounting hole;

[0036] 2. Second shell;

[0037] 21. Feed interface;

[0038] 22. Fuel inlet;

[0039] 23. Fuel chamber;

[0040] 24. Rim;

[0041] 25. Second sealing groove;

[0042] 26. Third sealing groove;

[0043] 27. Second mounting hole;

[0044] 3. Sealing plate;

[0045] 4. First sealing element;

[0046] 5. Second seal; and

[0047] 6. Tighten the bolts. Detailed Implementation

[0048] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0049] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or mechanisms, but do not exclude the presence or addition of one or more other features, steps, operations, or mechanisms.

[0050] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0051] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0052] Figure 1 A perspective view of a first housing according to an embodiment of the present disclosure is schematically shown; Figure 2 The diagram schematically illustrates a fuel port and discharge port projected orthogonally in the thickness direction of the first housing according to an embodiment of the present disclosure.

[0053] The embodiments of this disclosure provide, as Figure 1 and Figure 2As shown, the flame gun includes a first housing 1, with a discharge port 11 coaxially arranged in the middle of the first housing 1, suitable for outputting a mixture of oxidant and raw material powder. The first housing 1 also has a plurality of fuel holes 12, which are evenly spaced around the discharge port 11. The fuel holes 12 are inclined to the axis of the discharge port 11, and each fuel hole 12 has the same inclination direction. Each fuel hole 12 includes a first end 121 for inputting fuel and a second end 122 for outputting fuel. In the orthographic projection of the first housing 1 in the thickness direction, the projection of the second end 122 is located between the projection of the first end 121 and the projection of the discharge port 11, and the midpoint of the projection of the second end 122 is not collinear with the midpoint of the projections of the first end 121 and the discharge port 11.

[0054] According to the above configuration, by coaxially arranging a discharge hole 11 in the middle of the first housing 1, and uniformly arranging multiple fuel holes 12 inclined to the axis of the discharge hole 11 around its circumference, precise mixing of the oxidant and raw material powder mixture with fuel is achieved. By designing the inclination direction of the fuel holes, the input end 121 and output end 122 of the fuel are not collinear with the orthographic projection of the discharge hole 11 in the thickness direction, and the projection of the output end 122 is located between the projections of the input end 121 and the discharge hole 11. This inclination design causes the output fuel to form a converging vortex, which can fully mix with the oxidant, significantly improving combustion efficiency and extending the residence time of the raw material powder in the flame, thereby increasing heat conversion efficiency and reducing energy consumption. Simultaneously, this efficient mixing and heating process ensures uniform melting and spheroidization of the raw material powder at high temperatures, significantly improving the preparation quality and production efficiency of spherical powder particles.

[0055] It should be noted that the first line connecting the midpoints of the projections of the input end 121 and the output end 122 of each fuel hole 12 in the thickness direction is located on the same side of the second line connecting the midpoints of the projections of the input end 121 and the output hole 11 in the thickness direction, and the angle between the first line and the second line is the same, so that each fuel hole 12 has the same tilt direction, forming a torsional structure that gradually converges and is tilted from the side where the input end 121 of the first housing 1 is located to the side where the output end 122 is located, so that the ejected fuel forms a swirling flow.

[0056] Figure 3 A first-view perspective perspective view of a flamethrower according to an embodiment of the present disclosure is schematically shown; Figure 4 Schematic illustration Figure 3 A second-view perspective perspective of the flamethrower; Figure 5 Schematic illustration Figure 3 A cross-sectional view of the flamethrower.

[0057] In one illustrative embodiment, such as Figures 3 to 5As shown, it also includes a second housing 2, which is disposed on the first surface of the first housing 1 and is adapted to connect the input end of the discharge port 11 to an external material source; and the second housing 2 is also adapted to connect the first end 121 of the fuel port 12 to an external fuel source.

[0058] According to the above configuration, the second housing 2 is connected to the external material source and fuel source so that the mixture of oxidant and raw material powder is input into the discharge port 11 and the fuel is input into the fuel port 12.

[0059] In one illustrative embodiment, such as Figures 3 to 5 As shown, the second housing 2 is provided with a feed port 21 in the middle. The feed port 21 connects the material source and the discharge port 11 so as to input the mixture of oxidant and raw material powder into the discharge port 11.

[0060] In detail, the feed inlet 21 is coaxially arranged with the second housing 2, and the second housing 2 is coaxially covered on the first surface of the first housing 1, so that the axes of the feed inlet 21 and the discharge hole 11 are aligned and connected.

[0061] In one illustrative embodiment, such as Figures 3 to 5 As shown, the second housing 2 is also provided with a fuel interface 22, which connects the fuel source and the fuel port 12 to input fuel into the fuel port 12.

[0062] In detail, the oxidant includes air and / or oxygen; the raw material powder includes silica powder; the fuel includes hydrogen, natural gas, kerosene, and diesel, etc. Among them, the high temperature generated by hydrogen combustion can promote the melting and spheroidization of silica powder, and the combustion product is only water vapor, which will not contaminate the silica powder; natural gas is mainly composed of methane (CH4), which can also provide sufficient heat when burned, but its combustion temperature is slightly lower than that of hydrogen; in some processes, kerosene can be used as fuel, providing the required heat through combustion after atomization; diesel is similar to kerosene and can also be used as fuel, especially in applications requiring higher combustion temperatures.

[0063] Figure 6 A perspective view of the second housing according to an embodiment of the present disclosure is schematically shown from a second perspective.

[0064] In one illustrative embodiment, such as Figures 3 to 6 As shown, the second housing 2 is provided with a plurality of fuel ports 22; the second housing 2 is also provided with a fuel chamber 23, which is constructed in an annular shape to connect the plurality of fuel ports 22 and to at least two fuel holes 12.

[0065] According to the above configuration, the annular fuel chamber 23 allows fuel from multiple fuel ports 22 to converge within the fuel chamber 23 and be evenly distributed to each fuel hole 12 for output. This ensures that the fuel pressure is the same in each fuel hole 12 for uniform outflow, improving the stability and efficiency of combustion. It also helps to improve the thermal efficiency of the flame gun in the preparation of spherical powder particles, ensuring the uniform melting and sphericalization of the raw material powder at high temperatures, thereby improving the preparation quality and production efficiency of spherical powder particles.

[0066] In detail, multiple fuel ports 22 are evenly spaced around the feed port 21, and an annular fuel chamber 23 is coaxially arranged with the feed port 21 to ensure communication between the multiple fuel ports 22 and the multiple fuel holes 12.

[0067] In one illustrative embodiment, a second annular sealing groove 25 is provided on the second surface of the second housing 2 facing the first housing 1. The second sealing groove 25 is located between the fuel chamber 23 and the output end of the feed inlet 21, and is suitable for installing the first sealing member 4 to seal the inner side of the fuel chamber 23 and the feed inlet 21.

[0068] In one illustrative embodiment, an annular third sealing groove 26 is also provided on the second surface. The third sealing groove 26 is located on the outside of the fuel chamber 23 and is suitable for installing the second seal 5 to seal the outside of the fuel chamber 23.

[0069] In one illustrative embodiment, the second sealing groove 25 and the third sealing groove 26 are coaxially arranged with the fuel chamber 23.

[0070] In one illustrative embodiment, the first seal 4 and the second seal 5 include a sealing ring or a sealing gasket.

[0071] In one illustrative embodiment, the diameter of the discharge hole 11 and the diameter of the fuel hole 12 are set according to a preset ratio, so that the speed of the oxidant and raw material powder output from the discharge hole 11 is 10 times the speed of the fuel output from the fuel hole 12. This makes the central gas flow velocity much greater than the surrounding gas flow velocity. Due to the fluid pressure, the fuel sprayed from the outside will move towards the center, fully mix with the oxidant and fuel, significantly increase the flame spray temperature, improve heat transfer efficiency, and promote the spheroidization of the raw material powder.

[0072] In detail, in Example 1, natural gas was selected as the fuel, with a flow rate of 20 L / min, 16 fuel orifices, and a fuel output velocity of 4 m / s. Based on the highest temperature reached in the natural gas and air combustion experiment and the required oxidant velocity to spray the raw material powder, the oxidant flow rate was set to 72 L / min, and the oxidant output velocity was approximately 40 m / s. At this point, the diameter of each fuel orifice 12 was calculated to be 2.6 mm, and the diameter of the discharge orifice 11 was 6.2 mm. In this way, the flow rate and velocity took into account the spraying effect of the raw material powder, the temperature of gas combustion, and the promotion of fuel converging towards the center.

[0073] In one illustrative embodiment, such as Figure 1 As shown, the first housing 1 is provided with a cold mass inlet 13 and a cold mass outlet 14 that are connected to an external cold mass source; the first housing 1 is also provided with a cold mass channel 15 that connects the cold mass inlet 13 and the cold mass outlet 14, and the cold mass channel 15 is suitable for dissipating heat from the cold mass flowing through it.

[0074] According to the above configuration, a cold mass inlet 13, a cold mass outlet 14, and a cold mass channel 15 are provided. Cooling medium provided by an external cold mass source flows through the cold mass channel 15, thereby removing the heat generated by the first housing 1 during high-temperature operation. This prevents housing deformation or damage due to high temperatures, improving the durability and reliability of the flamethrower.

[0075] In one illustrative embodiment, such as Figure 1 As shown, the cold mass inlet 13 and the cold mass outlet 14 are spaced apart on the side wall of the first housing 1 and extend radially from the first housing 1, respectively.

[0076] According to the above-described configuration, the cold mass inlet 13 and the cold mass outlet 14 are arranged at intervals on the side wall of the first housing 1. This layout facilitates the installation of the second housing while ensuring that the connected cold mass source and related components are not affected by the high temperatures generated by fuel combustion. The optimized structure reduces complexity and improves the thermal insulation performance of the flamethrower, thereby ensuring stable operation and long-term durability of the flamethrower in high-temperature environments.

[0077] In one illustrative embodiment, the cold mass inlet 13 and the cold mass outlet 14 are threaded to allow connection to a pagoda adapter and a cold mass pipe for the introduction of cooling water.

[0078] In one illustrative embodiment, the cold mass channel 15 is configured to extend reciprocally around the plurality of fuel holes 12.

[0079] In one illustrative embodiment, the cold mass channel 15 is configured in an "S" shape connecting the cold mass inlet 13 and the cold mass outlet 14, and is evenly distributed circumferentially across the plurality of fuel holes 12.

[0080] According to the above configuration, the flow path length of the cold mass in the cold mass channel 15 and the coverage area of ​​the cooling channel 15 are increased, which helps to achieve a more uniform heat dissipation effect, reduces the internal temperature gradient of the flame gun, thereby improving the stability and repeatability of the spherical silicon micropowder preparation process, extending the service life of the flame gun, reducing maintenance costs and downtime, optimizing the temperature distribution around the fuel hole, and helping to improve the quality and yield of spherical silicon micropowder.

[0081] In one illustrative embodiment, such as Figure 1 and Figure 5 As shown, the cold mass channel 15 includes an arcuate channel formed on the first surface, which extends around a plurality of fuel holes 12.

[0082] According to the above configuration, the cooling channel 15 adopts an arc-shaped channel design extending from the first surface, which cleverly promotes direct contact between the internally circulating cooling material and the second housing 2, effectively dissipating heat from the second housing 2 that has risen due to heat conduction from the first housing 1. At the same time, the arc-shaped channel design not only simplifies the structure of the cooling channel 15 and reduces manufacturing costs, but also improves the visibility and ease of maintenance of the cooling channel 15, ensuring the long-term stable operation of the cooling system and the high-efficiency heat dissipation performance of the equipment.

[0083] Figure 7 A perspective view of a sealing plate according to an embodiment of the present disclosure is shown schematically.

[0084] In one illustrative embodiment, such as Figure 1 , Figure 5 and Figure 7 As shown, it also includes a sealing plate 3, which is configured as an annular shape and installed in a sealing groove 16 formed on the first surface. The sealing plate 3 is suitable for sealing the arc-shaped groove.

[0085] According to the above configuration, by installing the annular sealing plate 3 into the sealing groove 16 on the first surface, the arc-shaped channel is effectively sealed, thereby ensuring the integrity of the cold channel 15. This improves the sealing performance of the cooling system, prevents leakage of the cooling medium, and ensures the stability and safety of the equipment in high-temperature operating environments, thereby improving the overall system's operating efficiency and reliability.

[0086] In one illustrative embodiment, such as Figure 1 , Figure 3 and Figure 6 As shown, the second housing 2 is provided with a flange 24 extending radially in the circumferential direction. The flange 24 is suitable for connecting the first housing 1 and fixing the sealing plate 3 in the sealing groove 16.

[0087] According to the above configuration, the flange 24 is used to connect the first housing 1, providing a mechanical interface for fixing the first housing 1 and the second housing 2, ensuring the integrity and stability of the flame gun structure. The flange 24 is also used to fix the sealing plate 3 within the sealing groove 16, which helps to ensure that the sealing plate 3 maintains good sealing performance under high temperature and pressure environments, preventing leakage of cooling medium.

[0088] In detail, the flange 24 is disposed circumferentially on the end face of the second housing 2 facing the first housing 1.

[0089] In one illustrative embodiment, such as Figures 3 to 5 As shown, the flange 24 is connected to the first housing 1 by fastening bolts 6.

[0090] In detail, the flange 24 is provided with a plurality of first mounting holes 17 evenly spaced around the second housing 2, and the first housing is provided with second mounting holes 27 that match the plurality of first mounting holes 17, which are suitable for installing fastening bolts 6 to connect and fix the flange 24 and the first housing 1.

[0091] Those skilled in the art will understand that the features described in the various embodiments of this disclosure can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments of this disclosure can be combined and / or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0092] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A flame gun for preparing spherical powder particles, characterized in that, Includes a first housing (1), with a discharge hole (11) coaxially arranged in the middle of the first housing (1) for discharging a mixture of oxidant and raw material powder. The first housing (1) also has a plurality of fuel holes (12), which are evenly spaced around the discharge hole (11). The fuel holes (12) are inclined to the axis of the discharge hole (11), and each fuel hole (12) has the same inclination direction. Each of the fuel holes (12) includes a first end (121) for inputting fuel and a second end (122) for outputting fuel. In the orthographic projection of the first housing (1) in the thickness direction, the projection of the second end (122) is located between the projection of the first end (121) and the projection of the discharge hole (11), and the midpoint of the projection of the second end (122) is not collinear with the midpoint of the projections of the first end (121) and the discharge hole (11). The first housing (1) is provided with a cold mass inlet (13) and a cold mass outlet (14) that are connected to an external cold mass source. The first housing (1) is also provided with a cold mass channel (15) that connects the cold mass inlet (13) and the cold mass outlet (14). The cold mass channel (15) is suitable for dissipating heat from the first housing (1) by using the flowing cold mass.

2. The flamethrower according to claim 1, characterized in that, It also includes a second housing (2), which is disposed on the first surface of the first housing (1) and is suitable for connecting the input end of the discharge hole (11) to an external material source; Furthermore, the second housing (2) is also adapted to connect the first end (121) of the fuel port (12) to an external fuel source.

3. The flamethrower according to claim 2, characterized in that, The second housing (2) is provided with a feeding port (21) in the middle, which connects the material source and the discharge hole (11).

4. The flamethrower according to claim 3, characterized in that, The second housing (2) is also provided with a fuel interface (22), which connects the fuel source and the fuel hole (12).

5. The flamethrower according to claim 4, characterized in that, The second housing (2) is provided with a plurality of the fuel inlets (22); The second housing (2) is also provided with a fuel chamber (23), which is configured in an annular shape to connect a plurality of the fuel interfaces (22) and to at least two of the fuel holes (12).

6. The flamethrower according to claim 2, characterized in that, The cold inlet (13) and the cold outlet (14) are spaced apart on the side wall of the first housing (1) and extend radially from the first housing (1).

7. The flamethrower according to claim 2, characterized in that, The cold channel (15) includes an arcuate channel formed on the first surface, the arcuate channel extending around the plurality of fuel holes (12).

8. The flamethrower according to claim 7, characterized in that, It also includes a sealing plate (3), which is configured as an annular ring and installed in a sealing groove (16) formed on the first surface, the sealing plate (3) being adapted to seal the arcuate groove.

9. The flamethrower according to claim 8, characterized in that, The second housing (2) is provided with a flange (24) extending radially in the circumferential direction. The flange (24) is adapted to connect the first housing (1) and fix the sealing plate (3) in the sealing groove (16).

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