A cooking stove burner with atomization function

Abstract

The utility model relates to a stove technical field especially, it relates to a stove burner with atomization function, including burner shell and oil nozzle, the burner shell sets up the baffle and divides the cavity into first chamber and second chamber, the baffle sets up the wind oil mixed spray hole and first through -hole, and the first through -hole intercommunication first chamber and second chamber, second chamber sets up the air inlet, and the air inlet is connected to high pressure wind, the oil nozzle is installed on the burner shell, and the front end of oil nozzle forms the oil injection part, and the center of oil injection part is oil injection hole, and oil injection part is close to the wind oil mixed spray hole, and the oil nozzle is connected to fuel oil, high pressure wind enters second chamber from the air inlet, and the high pressure wind of second chamber enters first chamber from the first through -hole, and the high pressure wind of second chamber also sprays from the wind oil mixed spray hole, and oil injection hole sprays fuel oil, and the high pressure wind that the wind oil mixed spray hole sprays carries out the impact atomization of oil injection hole sprays fuel oil, atomization oil gas can quickly ignite and improve the combustion efficiency, and it is favorable to the popularization and use of new energy fuel oil.

Description

Technical Field

[0001] This utility model belongs to the field of stove technology, and in particular relates to a stove burner with atomizing function. Background Technology

[0002] Currently, the development of new energy fuel technology is accelerating. Unlike traditional fuels such as diesel, ethanol, and gasoline, new energy fuel is about 40% more environmentally friendly and energy-efficient than traditional kitchen fuels throughout the entire application process. It is smokeless, odorless, promotes health, and has low emissions. Its environmental protection quality far exceeds that of traditional kitchen gasoline and diesel fuels, which is conducive to the sustainable utilization of liquid waste, reduces energy consumption, and helps protect the environment.

[0003] However, for some new energy fuels that are not flammable by open flame, the existing ignition stoves on the market cannot ignite these new energy fuels quickly and smoothly. Moreover, new energy fuels often cannot burn completely, resulting in low combustion efficiency, which is not conducive to the promotion and use of new energy fuels.

[0004] Therefore, this utility model addresses the aforementioned technical problems by providing a stove burner head with atomization function, which mixes and atomizes fuel and high-pressure air before combustion, enabling rapid ignition of the atomized oil and gas and improving combustion efficiency, thus solving the above-mentioned problems. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a stove burner head with atomizing function, comprising:

[0006] The burner head shell has an internal cavity, and a partition is provided inside the burner head shell to divide the cavity into a first chamber and a second chamber;

[0007] A wind-oil mixing spray hole is provided at the center of the partition, and a number of first through holes are provided on the outside of the wind-oil mixing spray hole. The first through holes connect the first chamber and the second chamber.

[0008] The second chamber has an air inlet on its side wall, which is connected to high-pressure air via a duct.

[0009] The fuel injector is mounted on the burner housing. The front end of the fuel injector is formed into a constricted fuel injection section. The center of the fuel injection section is a fuel injection hole. The fuel injection section is close to the air-fuel mixing injection hole. The rear end of the fuel injector is connected to fuel through an oil pipe.

[0010] Optionally, in some technical solutions, high-pressure air enters the second chamber from the air inlet, the second chamber stabilizes the flow and pressure of the high-pressure air, the high-pressure air in the second chamber enters the first chamber from the first through hole, the high-pressure air in the second chamber is also ejected from the air-fuel mixing injection hole, fuel is ejected from the fuel injection hole, and the high-pressure air ejected from the air-fuel mixing injection hole impacts and atomizes the fuel ejected from the fuel injection hole.

[0011] Optionally, in some technical solutions, a first mounting base is provided on the upper part of the burner shell, and the oil injector is mounted through the first mounting base.

[0012] Optionally, in some technical solutions, the first mounting base is a threaded base, the rear end of the fuel injector is formed with an external thread, and the fuel injector is installed in connection with the first mounting base via a threaded connection.

[0013] Optionally, in some technical solutions, the oil injection hole and the air-oil mixing injection hole are coaxially fitted together.

[0014] Optionally, in some technical solutions, the oil injection hole and the air-oil mixing injection hole are installed perpendicular to each other, with the oil injection hole located below or above the air-oil mixing injection hole.

[0015] Optionally, in some technical solutions, a mixing shroud is provided above the air-oil mixing nozzle. The mixing shroud has a contracting ring structure, and the mixing shroud promotes the mixing and atomization of oil and gas.

[0016] Alternatively, in some technical solutions, the injection port is mounted facing the inside of the mixing shroud.

[0017] Optionally, in some technical solutions, a burner inner liner is also included. The burner inner liner is installed in the first chamber and encapsulates the burner outer shell. The interior of the burner inner liner forms a third chamber. The third chamber is connected to the first chamber through several second through holes. A second mounting seat is provided at the bottom of the burner inner liner. The second mounting seat is connected to the third chamber and covers the air-oil mixing nozzle.

[0018] Optionally, some technical solutions also include a flame suppressor and a flame concentrator, wherein the flame suppressor is installed at the upper end of the inner liner of the burner head and encloses the third chamber, and the flame concentrator is installed at the upper end of the inner liner of the burner head and surrounds the flame suppressor.

[0019] Optionally, in some technical solutions, an ignition needle is also included, which is mounted on the burner housing and extends into the interior of the third chamber, and the ignition needle is connected to an igniter.

[0020] The technical solution of this utility model has the following advantages or beneficial effects:

[0021] This utility model provides a stove burner head with atomizing function, including a burner head shell and an oil spray nozzle. The burner head shell has an internal cavity, and a partition is provided inside the burner head shell, dividing the cavity into a first chamber and a second chamber. A mixed air-oil spray hole is provided at the center of the partition, and several first through holes are provided on the outer side of the mixed air-oil spray hole, connecting the first chamber and the second chamber. An air inlet is provided on the side wall of the second chamber, and the air inlet is connected to high-pressure air through an air duct. The oil spray nozzle is installed on the burner head. On the burner head, the front end of the fuel injector is formed into a constricted injection section, with the injection hole at the center. The injection section is close to the air-fuel mixing injection hole, and the rear end of the fuel injector is connected to the fuel via a fuel pipe. High-pressure air enters the second chamber through the air inlet, where it is stabilized and pressure-controlled. The high-pressure air from the second chamber enters the first chamber through the first through-hole, and is also ejected from the air-fuel mixing injection hole. Fuel is ejected from the injection hole, and the high-pressure air from the air-fuel mixing injection hole atomizes the fuel ejected from the injection hole. The burner head mixes and atomizes the fuel and high-pressure air before combustion. This atomized fuel and gas can be ignited quickly and combustion efficiency can be improved, which is conducive to the promotion and use of new energy fuels. Attached Figure Description

[0022] Embodiments of the present invention will be described more fully with reference to the accompanying drawings. However, the accompanying drawings are for illustration and explanation only and do not constitute a limitation on the scope of the present invention.

[0023] Figure 1 This is a partial cross-sectional schematic diagram of the burner head of the first type of stove with atomizing function;

[0024] Figure 2 This is a partial cross-sectional schematic diagram of the second type of stove burner with atomizing function;

[0025] Figure 3 This is a partial cross-sectional schematic diagram of the third type of stove burner with atomizing function;

[0026] Figure 4 This is a partial cross-sectional schematic diagram of the fourth type of stove burner with atomizing function;

[0027] Figure 5 This is a partial cross-sectional schematic diagram of the fifth type of stove burner with atomizing function;

[0028] Figure 6 This is a schematic cross-sectional view of the burner head of the first type of stove with atomizing function.

[0029] Illustration:

[0030] 1. Burner head outer shell; 2. Oil injector; 3. Baffle plate; 4. Cavity; 5. First chamber; 6. Second chamber; 7. Air-oil mixing spray hole; 8. First through hole; 9. Air inlet; 10. Oil spray section; 11. Oil spray hole; 12. First mounting base; 13. Mixing cover; 14. Burner head inner liner; 15. Third chamber; 16. Second through hole; 17. Second mounting base; 18. Flame suppressor; 19. Flame concentrator ring; 20. Ignition needle. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0032] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] In the description of this utility model, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] In the description of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0035] like Figure 1-6As shown, an embodiment of this utility model provides a stove burner with atomization function, including a burner shell 1 and a fuel injector 2. The inside of the burner shell 1 is a cavity 4, and a partition 3 is provided inside the burner shell 1, which divides the cavity 4 into a first chamber 5 and a second chamber 6. A mixed air-fuel spray hole 7 is provided at the center of the partition 3, and several first through holes 8 are provided on the outside of the mixed air-fuel spray hole 7, which connect the first chamber 5 and the second chamber 6. An air inlet 9 is provided on the side wall of the second chamber 6, and the air inlet 9 is connected to high-pressure air through an air pipe. The fuel injector 2 is installed on the burner shell 1, and the front end of the fuel injector 2 is formed into a constricted spray section 10. The center of the spray section 10 is a spray hole 11, and the spray section 10 is close to the mixed air-fuel spray hole 7. The rear end of the fuel injector 2 is connected to fuel through an oil pipe.

[0036] Furthermore, high-pressure air enters the second chamber 6 through the air inlet 9. The second chamber 6 stabilizes the flow and pressure of the high-pressure air. The high-pressure air from the second chamber 6 enters the first chamber 5 through the first through hole 8. The high-pressure air from the second chamber 6 is also ejected from the air-oil mixing nozzle 7 and fuel injection nozzle 11. The high-pressure air ejected from the air-oil mixing nozzle 7 impacts and atomizes the fuel injected from the fuel injection nozzle 11. The stove burner mixes and atomizes the fuel and high-pressure air before combustion. The atomized oil and gas can be quickly ignited and combustion efficiency can be improved, which is conducive to the promotion and use of new energy fuels.

[0037] Specifically, in this embodiment, such as Figure 1As shown, the burner head shell 1 of the stove has a cylindrical shell structure, with an open top and a closed bottom. The burner head shell 1 is typically made of stainless steel or integrally cast, giving it sufficient strength for durability. Of course, the shape and material of the burner head shell 1 can also be designed according to product requirements. The interior of the burner head shell 1 is hollow, forming a cavity 4. A partition 3 is installed inside the cavity 4. The partition 3 is a plate structure that divides the cavity 4 into a first chamber 5 and a second chamber 6. The first chamber 5 is located at the upper part of the burner head shell 1, and the second chamber 6 is located at the lower part. The first chamber 5 also serves as the installation space for stove components. A fuel-air mixing nozzle 7 is located at the center of the partition 3. This nozzle is used for high-pressure air to atomize fuel, forming atomized oil and gas. Multiple first through holes 8 are provided on the outer side of the air-oil mixing nozzle 7. These first through holes 8 are evenly distributed circumferentially on the partition plate 3. The first through holes 8 connect the first chamber 5 and the second chamber 6, allowing high-pressure air from the second chamber 6 to enter the first chamber 5 through the first through holes 8 and ultimately enter the burner liner 14 to aid combustion and improve combustion efficiency. More specifically, an air inlet 9 is provided on the side wall of the second chamber 6. The air inlet 9 is connected to the high-pressure air via an air pipe, allowing the high-pressure air to enter the second chamber 6 through the air pipe and the air inlet 9. The high-pressure air is provided by a high-pressure blower and is used to atomize the fuel by being sprayed from the air-oil mixing nozzle 7 in the second chamber 6. Additionally, the high-pressure air can also enter the burner liner 14 from the first chamber 5 to aid combustion, thereby achieving fuel atomization for rapid ignition and improved combustion efficiency. After entering the second chamber 6, the high-pressure air undergoes stable flow and pressure regulation within the second chamber 6 to prevent turbulence and pressure drop, improving atomization and maintaining a stable and upright flame.

[0038] Furthermore, in this embodiment, the fuel injector 2 is a cylindrical body with an oil channel formed inside. The front end of the fuel injector 2 is formed into a constricted fuel injection section 10, and the center of the top of the fuel injection section 10 is a fuel injection hole 11. The rear end of the fuel injector 2 is connected to fuel through an oil pipe, and a switch valve or flow valve can be configured on the oil pipe for control as needed. The fuel injector 2 is installed on the burner shell 1, and the fuel injection section 10 is installed close to the air-fuel mixing nozzle 7 so that the fuel sprayed from the fuel injection hole 11 can be rapidly atomized by the impact of the high-pressure air sprayed from the air-fuel mixing nozzle 7. In this embodiment, the high-pressure air enters the second chamber 6 from the air inlet 9. The second chamber 6 stabilizes the flow and pressure of the high-pressure air. The high-pressure air in the second chamber 6 enters the first chamber 5 from the first through hole 8. The high-pressure air in the second chamber 6 is also sprayed out from the air-fuel mixing nozzle 7, and fuel is sprayed out from the fuel injection hole 11. The high-pressure air sprayed from the air-fuel mixing nozzle 7 impacts and atomizes the fuel sprayed from the fuel injection hole 11. The stove burner mixes and atomizes fuel oil and high-pressure air before combustion. The atomized oil and gas can be ignited quickly and improve combustion efficiency, which is conducive to the promotion and use of new energy fuels.

[0039] Furthermore, in this embodiment, a first mounting base 12 is provided on the burner housing 1, and the fuel injector 2 is mounted through the first mounting base 12. The first mounting base 12 is a threaded seat, and the rear end of the fuel injector 2 is formed with an external thread. The fuel injector 2 and the first mounting base 12 are installed by threaded connection. Specifically, in order to realize the installation of the fuel injector 2, the burner housing 1 is provided with a first mounting base 12. The first mounting base 12 can be set in a specific position according to the installation method of the fuel injector 2. The first mounting base 12 is a threaded seat, and the rear end of the fuel injector 2 is formed with an external thread. The fuel injector 2 is fastened to the first mounting base 12 by threaded connection. At the same time, by adjusting the depth of the fuel injector 2 on the first mounting base 12, the atomization effect on the air-oil mixing nozzle 7 can be adjusted.

[0040] Furthermore, in some embodiments, a mixing shroud 13 is provided above the air-oil mixing nozzle 7. The mixing shroud 13 has a contracting ring structure, which promotes the mixing and atomization of oil and gas. The oil spray nozzle 11 is installed facing the inside of the mixing shroud 13. Specifically, in order to improve the oil-gas atomization effect of the burner head on the air-oil mixing nozzle 7, a mixing shroud 13 is installed at the upper end of the air-oil mixing nozzle 7. The mixing shroud 13 has a contracting ring structure, and the conical bottom cover of the mixing shroud 13 is installed at the upper end of the air-oil mixing nozzle 7. The oil spray nozzle 11 is installed facing the inside of the mixing shroud 13 to ensure that the fuel sprayed from the oil spray nozzle 11 falls into the mixing shroud 13, thereby fully atomizing the fuel. The structure of the mixing shroud 13, which is smaller at the top and larger at the bottom, can slow down the atomized oil and gas from leaving the mixing shroud 13, thereby effectively improving the oil-gas atomization effect. The fuel injected from the fuel injection hole 11 mixes with the high-pressure air injected from the air-fuel mixing injection hole 7 inside the mixing shroud 13 and is repeatedly impacted and atomized by the high-pressure air. This effectively improves the fuel-air mixing and atomization effect on the air-fuel mixing injection hole 7, increases combustion efficiency, and results in higher fuel utilization, leading to better economic benefits and environmental performance.

[0041] Furthermore, in this embodiment, the oil injection hole 11 and the air-oil mixing injection hole 7 are coaxially fitted together. Specifically, in order to meet the installation requirements of different burners, such as... Figure 1-2 As shown, the fuel injector 2 and the air-fuel mixing nozzle 7 are arranged coaxially, so that the fuel injector 10 and the air-fuel mixing nozzle 7 are fitted together, making the fuel injector 11 coaxial with the air-fuel mixing nozzle 7 and facing the same direction. There is a certain gap between the installed fuel injector 10 and the air-fuel mixing nozzle 7. The high-pressure air in the second chamber 6 can be sprayed out from the gap to atomize the fuel sprayed out of the fuel injector 11, thus achieving a good fuel atomization effect.

[0042] Furthermore, in some embodiments, the oil injection hole 11 and the air-oil mixing injection hole 7 are installed perpendicular to each other, with the oil injection hole 11 located below or above the air-oil mixing injection hole 7. Specifically, to meet the installation requirements of different burners, such as... Figure 3-5As shown, the fuel injector 2 and the air-fuel mixing nozzle 7 are installed perpendicular to each other. The fuel injector 10 is close to the air-fuel mixing nozzle 7. The fuel injector 11 is located directly above or below the air-fuel mixing nozzle 7. The fuel injector 11 sprays fuel to the position of the air-fuel mixing nozzle 7. High-pressure air is sprayed out from the second chamber 6 of the burner shell 1 through the air-fuel mixing nozzle 7 and impacts the fuel, which can also achieve a good fuel atomization effect.

[0043] Furthermore, in this embodiment, as Figure 6 As shown, the stove burner also includes a burner inner liner 14, which is installed inside the first chamber 5 and encloses the burner outer shell 1. The interior of the burner inner liner 14 forms a third chamber 15, which is connected to the first chamber 5 through several second through holes 16. A second mounting seat 17 is provided at the bottom of the burner inner liner 14, which is connected to the third chamber 15 and covers the air-oil mixing spray hole 7. Specifically, the burner inner liner 14 has a cylindrical hollow structure, with its bottom outer diameter smaller than the inner diameter of the burner outer shell 1 and its top outer diameter larger than the outer diameter of the burner outer shell 1, so that the burner inner liner 14 can be installed on the top of the burner outer shell 1 and enclose the first chamber 5. The hollow interior of the burner inner liner 14 forms the third chamber 15, which serves as a combustion chamber where the mixed atomized oil and gas are burned. More specifically, the bottom of the burner inner liner 14 is a second mounting base 17, which passes through the bottom surface of the burner inner liner 14 and connects to the third chamber 15. Thus, when the burner inner liner 14 is installed in the first chamber 5, the second mounting base 17 engages with the upper end of the air-oil mixing nozzle 7, allowing the atomized oil and gas sprayed from the air-oil mixing nozzle 7 to directly enter the third chamber 15. Preferably, to further improve combustion efficiency, multiple second through holes 16 are provided on the side wall of the burner inner liner 14. The second through holes 16 connect the first chamber 5 and the third chamber 15, allowing high-pressure air to enter the third chamber 15 from the first chamber 5 to aid combustion, resulting in higher combustion efficiency. It should be noted that the number of second through holes 16 can be set according to design requirements, and multiple second through holes 16 are usually irregularly arranged on the side wall of the burner inner liner 14.

[0044] Furthermore, in this embodiment, as Figure 6 As shown, the stove burner also includes a flame suppressor 18 and a flame concentrator 19. The flame suppressor 18 is installed at the upper end of the burner inner liner 14 and encloses the third chamber 15. The flame concentrator 19 is installed at the upper end of the burner inner liner 14 and surrounds the flame suppressor 18. Specifically, the flame suppressor 18 has a plate structure and has flame holes (not shown). The flame generated by combustion in the third chamber 15 can escape through the flame holes for heating. The flame concentrator 19 has a contracting ring structure. The conical bottom cover of the flame concentrator 19 is installed at the upper end of the burner inner liner 14 and surrounds the flame suppressor 18, which plays a role in concentrating the flame and preventing wind, maintaining stable firepower and upright flame, which is conducive to heating.

[0045] Furthermore, in this embodiment, as Figure 6 As shown, the stove burner also includes an ignition needle 20, which is mounted on the burner housing 1 and extends into the third chamber 15. The ignition needle 20 is connected to an igniter. Specifically, there are usually two ignition needles 20. The ignition needles 20 are mounted on the burner housing 1, and the ignition end of the ignition needle 20 extends into the third chamber 15. The electrical end of the ignition needle 20 is connected to the igniter and the power supply. The ignition needle 20 is controlled by the igniter to ignite the atomized oil and gas in the third chamber 15, thereby achieving continuous combustion of atomized oil and gas in the burner.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A stove burner head with atomizing function, characterized in that, include: The burner head shell has an internal cavity, and a partition is provided inside the burner head shell to divide the cavity into a first chamber and a second chamber; A wind-oil mixing spray hole is provided at the center of the partition, and a number of first through holes are provided on the outside of the wind-oil mixing spray hole. The first through holes connect the first chamber and the second chamber. The second chamber is provided with an air inlet, which is connected to high-pressure air via an air duct; The fuel injector is mounted on the burner housing. The front end of the fuel injector is formed into a constricted fuel injection section. The center of the fuel injection section is a fuel injection hole. The fuel injection section is close to the air-fuel mixing injection hole. The rear end of the fuel injector is connected to fuel through an oil pipe.

2. The stove burner with atomizing function as described in claim 1, characterized in that, High-pressure air enters the second chamber through the air inlet. The second chamber stabilizes the flow and pressure of the high-pressure air. The high-pressure air in the second chamber enters the first chamber through the first through hole. The high-pressure air in the second chamber is also ejected from the air-fuel mixing nozzle. Fuel is ejected from the fuel injection hole. The high-pressure air ejected from the air-fuel mixing nozzle impacts and atomizes the fuel ejected from the fuel injection hole.

3. The stove burner with atomizing function as described in claim 2, characterized in that, A first mounting base is provided on the upper part of the burner head shell, and the oil injector is mounted through the first mounting base.

4. The stove burner with atomizing function as described in claim 3, characterized in that, The first mounting base is a threaded base, and the rear end of the fuel injector is formed with an external thread. The fuel injector is installed in connection with the first mounting base via a threaded connection.

5. The stove burner head with atomizing function as described in claim 1, 2, or 3, characterized in that, The oil injection hole and the air-oil mixing injection hole are coaxially fitted together.

6. The stove burner head with atomizing function as described in claim 1, 2, or 3, characterized in that, The oil injection hole is installed perpendicular to the air-oil mixing injection hole, and the oil injection hole is located below or above the air-oil mixing injection hole.

7. The stove burner head with atomizing function as described in claim 6, characterized in that, A mixing cover is provided above the air-oil mixing nozzle. The mixing cover has a contracting ring structure and promotes the mixing and atomization of oil and gas.

8. The stove burner head with atomizing function as described in claim 7, characterized in that, The oil injection hole is mounted facing the inside of the mixing shroud.

9. The stove burner with atomizing function as described in claim 1 or 2, characterized in that, It also includes a burner inner liner, which is installed in the first chamber and encapsulates the burner outer shell. The interior of the burner inner liner forms a third chamber, which is connected to the first chamber through several second through holes. A second mounting seat is provided at the bottom of the burner inner liner, which is connected to the third chamber. The second mounting seat covers the air-oil mixing nozzle.

10. The stove burner with atomizing function as described in claim 9, characterized in that, It also includes a flame suppressor and a flame concentrator. The flame suppressor is installed at the upper end of the inner liner of the burner head and encloses the third chamber. The flame concentrator is installed at the upper end of the inner liner of the burner head and surrounds the flame suppressor.

11. The stove burner with atomizing function as described in claim 10, characterized in that, It also includes an ignition needle, which is mounted on the burner housing and extends into the interior of the third chamber, and the ignition needle is connected to an igniter.

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