A cyclone structure of a self-flowing stove burner

Abstract

This utility model discloses a cyclone structure for a self-flowing stove burner, comprising: a burner shell, with a first gas chamber formed inside the burner shell; a burner liner, located inside the burner shell; an air chamber, installed at the bottom of the burner shell, located inside or outside the bottom of the burner shell, with a second gas chamber formed inside the air chamber; and a cyclone tube, installed in the middle of the air chamber, with a third gas chamber formed inside. Existing fuel injector structures are prone to overheating, leading to changes in fuel properties and causing technical problems such as unstable atomization and flame runaway. Therefore, there is an urgent need for a novel cyclone structure that can effectively reduce the heat load of the fuel injector and prevent fuel thermal expansion while ensuring efficient cyclone atomization, in order to achieve more stable, efficient, and safe combustion performance.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, specifically to a cyclone structure for a self-flowing stove burner. Background Technology

[0002] In existing gravity-flow fuel cooktops, the combustion efficiency and flame stability of the burner primarily depend on the atomization quality of the fuel. To achieve good atomization, most products on the market currently use high-pressure airflow to disperse the fuel into fine mist, thereby promoting complete combustion. Common atomization methods include direct injection and swirl atomization.

[0003] Direct injection systems use airflow to directly impact the fuel at the nozzle outlet. While simple in structure, this design suffers from strong airflow directionality, which can lead to skewed and uneven fuel mist distribution. This can result in incomplete combustion, flame flickering, and even localized backfire, affecting thermal efficiency and operational safety. To improve atomization uniformity, some designs incorporate inclined guide channels around the nozzle. Utilizing the swirling effect created by the tangential entry of airflow, the fuel is forced into a conical film by centrifugal force and torn into a finer, more symmetrical mist, thereby enhancing combustion stability.

[0004] However, this type of cyclone structure has significant technical drawbacks. To accommodate the machining of the guide channels, the overall size of the nozzle is typically large, increasing the contact area between its metal wall and the high-temperature combustion zone, leading to more significant heat absorption and conduction. During continuous operation, the nozzle temperature rises rapidly, causing the fuel flowing inside to expand and its viscosity to decrease, disrupting the original stable fuel supply. This thermal disturbance makes the atomization process unstable, especially during startup or load changes, easily resulting in spray pulsation, dripping, or flame fluctuations, which in turn reduces the accuracy of combustion control and overall machine performance. Furthermore, the large nozzle structure also limits the miniaturization of the burner head and the increase in heat load density.

[0005] In summary, while existing self-flowing stove burners based on slotted cyclone atomization have improved atomization uniformity, the fuel nozzle structure is prone to overheating, leading to changes in fuel properties and causing technical problems such as unstable atomization and uncontrolled flame. Therefore, there is an urgent need for a new type of cyclone structure that can effectively reduce the heat load of the fuel nozzle and prevent fuel from expanding due to heat while ensuring efficient cyclone atomization, so as to achieve more stable, efficient and safe combustion performance. Utility Model Content

[0006] The purpose of this invention is to provide a cyclone structure for a self-flowing stove burner. Existing fuel nozzle structures are prone to overheating, which can lead to changes in fuel properties and cause technical problems such as unstable atomization and uncontrolled flame. Therefore, there is an urgent need for a new type of cyclone structure that can effectively reduce the heat load of the fuel nozzle and prevent the fuel from expanding due to heat while ensuring efficient cyclone atomization, so as to achieve more stable, efficient and safe combustion performance.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cyclone structure for a self-flowing stove burner, comprising:

[0008] The burner head shell has a first gas chamber formed inside it.

[0009] The inner liner of the burner head is located inside the outer shell of the burner head.

[0010] The air chamber is installed at the bottom of the burner shell. The air chamber is located inside or outside the bottom of the burner shell, and a second air chamber is formed inside the air chamber.

[0011] Cyclone tube, installed in the middle of the air chamber, forms a third air chamber inside;

[0012] The grease nozzle is threaded and installed at the bottom of the cyclone tube.

[0013] As a preferred embodiment of the cyclone structure of the self-flowing stove burner of this utility model, an air duct is installed on the surface of the burner shell, the air inlet end of the air duct is connected to an air source, and the air outlet end of the air duct passes through the burner shell and enters the air chamber to introduce high-pressure air into the air chamber.

[0014] As a preferred embodiment of the cyclone structure of the self-flowing stove burner of this utility model, the inner liner of the burner is provided with a combustion chamber, an ignition needle is installed inside the combustion chamber, and air holes for the inner liner of the burner are opened around the inner liner of the burner.

[0015] As a preferred embodiment of the cyclone structure of the self-flowing stove burner of this utility model, the air chamber is provided with air chamber holes around it. The high-pressure air inside the air chamber enters the outer shell of the burner through the air chamber holes, and the high-pressure air inside the air chamber simultaneously enters the cyclone pipe through the oblique holes.

[0016] As a preferred embodiment of the cyclone structure of the self-flowing stove head of this utility model, the cyclone tube is provided with an oblique hole, which guides the air and causes the air to rotate inside the cyclone tube.

[0017] As a preferred embodiment of the cyclone structure of the self-flowing stove burner of this utility model, the cyclone tube is provided with an air-oil mixing atomization hole, and the oil nozzle is provided with a pointed oil outlet, which is fixed in the center of the air-oil mixing atomization hole.

[0018] As a preferred embodiment of the cyclone structure of the self-flowing stove burner of this utility model, the oil inlet end of the oil nozzle is connected to the oil supply pipe.

[0019] As a preferred embodiment of the cyclone structure of the self-flowing stove burner of this utility model, the bottom of the inner liner of the burner is provided with an inner liner bottom hole that communicates with the oil-air mixing and atomizing hole, so that the mixed oil mist enters the inner liner of the burner.

[0020] As a preferred embodiment of the cyclone structure of the self-flowing stove head of this utility model, a fire-pressing plate is installed on the top of the inner liner of the stove head, and a fire outlet hole is opened on the fire-pressing plate.

[0021] As a preferred embodiment of the cyclone structure of the self-flowing stove burner of this utility model, a fire-concentrating ring is installed on the top of the burner shell, and the diameter of the top of the fire-concentrating ring is smaller than the diameter of the bottom.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. This invention, by setting oblique holes on the cyclone tube, guides the airflow tangentially to form a stable internal vortex, avoiding the problems of large nozzle size and easy heat absorption caused by traditional grooved nozzles. The nozzle, serving only as a fuel supply component, is small in size with a small contact area with the high-temperature combustion zone, effectively reducing heat conduction and preventing fuel expansion inside the nozzle, thus ensuring stable fuel supply. Simultaneously, in the air-fuel mixing atomization hole at the top of the cyclone tube, the rotating airflow is aligned with the nozzle's pointed outlet, achieving highly efficient, centrally symmetrical shear atomization to form a fine, uniform conical fuel mist. This design significantly improves atomization quality, making the fuel mist particles finer and more evenly distributed, greatly promoting fuel-air mixing efficiency, achieving complete combustion, improving thermal efficiency, and reducing fuel consumption and harmful emissions.

[0024] 2. This utility model effectively controls the flame shape through the synergistic structure of the fire suppressor and the fire concentrator. The fire suppressor is installed on the top of the inner liner of the burner, and its flame outlet restricts the lateral spread of the flame, allowing the flame to burn fully in the lower part of the inner liner of the burner. This plays a role in stabilizing the flame, reducing noise, and preventing backfire, significantly reducing combustion noise. Subsequently, the flame passes through the fire concentrator, whose conical structure, which is smaller at the top and larger at the bottom, further converges and guides the flame, preventing it from being skewed or scattered when it is ejected. This ensures that the flame is concentrated and straight upward, improving the concentration and uniformity of heating. This design not only improves the utilization rate of thermal energy but also enhances the combustion stability of the stove under various working conditions, improving the user experience. It is especially suitable for cooking scenarios with high requirements for firepower control. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] In the diagram: 1. Burner outer shell; 2. Burner inner liner; 3. Bottom hole of the inner liner; 4. Air-oil mixing and atomizing hole; 5. Air duct; 6. Angled hole; 7. Oil nozzle; 8. Cyclone tube; 9. Air chamber; 10. Air chamber hole; 11. Flame outlet hole; 12. Fire suppression plate; 13. Flame concentrator ring; 14. Air hole of the burner inner liner. Detailed Implementation

[0027] Please see Figure 1A cyclone structure for a self-flowing stove burner includes:

[0028] The burner head outer shell 1 has a first gas chamber formed inside the burner head outer shell 1;

[0029] Burner inner liner 2, which is located inside the burner outer shell 1;

[0030] Air chamber 9 is installed at the bottom of the burner shell 1. The air chamber 9 is located in the inner cavity or outer side of the bottom of the burner shell 1. A second air chamber is formed inside the air chamber 9.

[0031] Cyclone tube 8 is installed in the middle of air chamber 9, forming a third air chamber inside;

[0032] Oil nozzle 7 is threadedly installed at the bottom of cyclone tube 8.

[0033] Furthermore, an air duct 5 is installed on the surface of the burner shell 1. The air inlet end of the air duct 5 is connected to an air source, and the air outlet end of the air duct 5 passes through the burner shell 1 and enters the air chamber 9 to introduce high-pressure air into the air chamber 9. At the same time, the high-pressure air inside the air chamber 9 enters the cyclone pipe 8 through the inclined hole 6.

[0034] Furthermore, the inner liner 2 of the burner head is provided with a combustion chamber, an ignition needle is installed inside the combustion chamber, and air holes 14 of the burner head are opened around the inner liner 2 of the burner head.

[0035] Furthermore, air chamber holes 10 are provided around the air chamber 9, through which the high-pressure air inside the air chamber 9 enters the furnace head shell 1.

[0036] Furthermore, the cyclone tube 8 is provided with an oblique hole 6, which guides the air and causes the air to rotate inside the cyclone tube 8.

[0037] Furthermore, the cyclone tube 8 is provided with an air-oil mixing atomization hole 4, and the oil nozzle 7 is provided with a pointed oil outlet, which is fixed in the center of the air-oil mixing atomization hole 4.

[0038] Furthermore, the oil inlet end of the nozzle 7 is connected to the oil supply pipe.

[0039] Furthermore, the bottom of the burner inner liner 2 is provided with an inner liner bottom hole 3 that communicates with the oil-air mixing atomization hole 4, so that the mixed oil mist enters the burner inner liner 2.

[0040] Furthermore, a fire suppression plate 12 is installed on the top of the inner liner 2 of the burner head, and a fire outlet hole 11 is opened on the fire suppression plate 12.

[0041] Furthermore, a fire-concentrating ring 13 is installed on the top of the burner shell 1, and the diameter of the top of the fire-concentrating ring 13 is smaller than the diameter of the bottom.

[0042] High-pressure air generated by an external air source enters the burner system through air duct 5. The air outlet of air duct 5 leads to the air chamber 9. The air first enters the second air chamber formed by air chamber 9. The air then enters the cyclone pipe 8 from air chamber 9 and is tangentially injected into the third air chamber of cyclone pipe 8 through the inclined holes 6 set on its pipe wall. Due to the angle design of the inclined holes 6, the airflow forms a strong rotating airflow after entering cyclone pipe 8. The rotating airflow rises to the air-oil mixing atomization hole 4 at the top of cyclone pipe 8, where it meets the fuel sprayed from the oil nozzle 7 and completes atomization. At the same time, air chamber holes 10 are opened around air chamber 9. Air enters the first air chamber of burner shell 1 through these holes and enters the combustion chamber from the burner inner liner air holes 14 around the burner inner liner 2 as combustion air to participate in the subsequent combustion process.

[0043] Fuel is connected to the inlet of nozzle 7 via an external fuel supply pipe. Nozzle 7 is threaded to the bottom of cyclone tube 8 to achieve a sealed connection. Fuel flows through nozzle 7 under pressure and exits from the pointed outlet at its top. This outlet is precisely fixed in the center of the air-fuel mixing atomizing hole 4. When fuel flows out from the pointed outlet, it immediately encounters the airflow that is sprayed out at high speed from the top of cyclone tube 8. Under the strong and uniform swirling action, the fuel is strongly sheared and torn, forming a fine and uniform cone-shaped oil mist, which is sprayed out through the air-fuel mixing atomizing hole 4. The atomized oil mist enters the combustion chamber of the burner inner liner 2 through the bottom hole 3 of the inner liner. The burner inner liner 2 is equipped with an ignition needle, which generates an electric spark when started, igniting the mixture of oil mist and air to form an initial flame.

[0044] Combustion air continuously enters from the vents 14 around the inner liner of the burner head 2, ensuring the oxygen required for combustion. During combustion, the flame is suppressed by the pressure plate 12, and the flame outlet 11 on the pressure plate 12 restricts the flame diffusion, concentrating the flame in the lower part of the inner liner of the burner head 2 for full combustion, reducing noise and preventing backfire. The flame is finally ejected upward from the flame outlet 11 and then passes through the flame concentrating ring 13. The flame concentrating ring 13 has a conical structure that is smaller at the top and larger at the bottom, which can effectively converge the flame, prevent the flame from spreading or tilting, and make the flame concentrated and straight upward, improving thermal efficiency and heating uniformity.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cyclone structure for a self-flowing stove burner, characterized in that, include: The burner shell (1) has a first gas chamber inside it; Burner inner liner (2), the burner inner liner (2) is located inside the burner outer shell (1); Air chamber (9) is installed at the bottom of the furnace head shell (1). The air chamber (9) is located in the inner cavity or outer side of the bottom of the furnace head shell (1). A second air chamber is formed inside the air chamber (9). Cyclone tube (8) is installed in the middle of the air chamber (9) and forms a third air chamber inside; Oil nozzle (7) is threadedly installed at the bottom of cyclone pipe (8).

2. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The surface of the furnace head shell (1) is equipped with an air duct (5). The air inlet end of the air duct (5) is connected to an air source, and the air outlet end of the air duct (5) passes through the furnace head shell (1) and enters the air chamber (9) to introduce high-pressure air into the air chamber (9).

3. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The inner liner of the burner (2) is provided with a combustion chamber, and an ignition needle is installed inside the combustion chamber. The inner liner of the burner (2) is provided with air holes (14) around it.

4. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The air chamber (9) is surrounded by air chamber holes (10). The high-pressure air inside the air chamber (9) enters the furnace head shell (1) through the air chamber holes (10). At the same time, the high-pressure air inside the air chamber (9) enters the cyclone pipe (8) through the inclined hole (6).

5. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The cyclone tube (8) is provided with an oblique hole (6), which guides the air and makes the air rotate inside the cyclone tube (8).

6. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The cyclone tube (8) is provided with an oil-air mixing atomization hole (4), and the oil nozzle (7) is provided with a pointed oil outlet, which is fixed in the center of the oil-air mixing atomization hole (4).

7. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The oil inlet end of the nozzle (7) is connected to the oil supply pipe.

8. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The bottom of the burner liner (2) is provided with a bottom hole (3) that communicates with the oil-air mixing atomization hole (4), so that the mixed oil mist enters the burner liner (2).

9. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The inner liner of the furnace head (2) is equipped with a fire suppression plate (12) on top, and the fire suppression plate (12) has a fire outlet hole (11).

10. The cyclone structure of a self-flowing stove burner according to claim 1, characterized in that: The top of the furnace head shell (1) is equipped with a fire-gathering ring (13), the diameter of the top of the fire-gathering ring (13) is smaller than the diameter of the bottom.

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