Hand-held torch burner

Abstract

The utility model discloses a handheld torch burner belongs to the technical field of burner. The burner, including the plug valve of connecting on the gas cylinder, the plug valve is connected with the flow divider, and the flow divider other end is connected with the combustion cylinder, is provided with the first stage premixing chamber and the second stage premixing chamber in the combustion cylinder, and the second stage premixing chamber upper end all is provided with the wind -proof tube, and the first stage premixing chamber and the second stage premixing chamber with the combustion cylinder between all exist the cavity, the filter screen is installed to the first stage premixing chamber air inlet and the second stage premixing chamber air inlet all. The utility model discloses the first stage premixing chamber and the second stage premixing chamber all adopt the design that the combustion cylinder air inlet is staggered with the premixing chamber air inlet, and the filter screen is combined, and the rainwater, the sundries directly into the premixing chamber is effectively blocked, and a little moisture is vaporized simultaneously using the combustion heat, ensures the combustion stability, and the wind -proof tube structure optimization flame form at the top of the second stage premixing chamber, reduces the influence of strong wind to the combustion.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and more specifically, to a handheld torch burner. Background Technology

[0002] In large-scale sporting events and celebratory ceremonies, the handheld torch serves as an important symbol of conveying spirit and culture, and the performance of its burner directly affects the torch relay's effectiveness and safety. Currently, most commercially available handheld torch burners employ traditional direct-injection combustion structures, which have significant shortcomings in flame stability. When encountering natural winds or changes in ambient airflow, the flame is prone to flickering or extinguishing, making it difficult to ensure the continuity and visual appeal of the torch relay. Furthermore, with increasingly stringent environmental protection requirements, the disadvantages of traditional burners in terms of fuel utilization and exhaust emissions are becoming increasingly apparent, not only wasting fuel but also producing harmful gases that pollute the environment. Simultaneously, existing handheld torch burners have insufficient windproof design, typically relying on simple wind shields for limited protection and potentially affecting the flame's aesthetics and brightness. Therefore, we propose a new handheld torch burner. Utility Model Content

[0003] The purpose of this invention is to provide a handheld torch burner to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A handheld torch burner includes a stopcock valve connected to a gas cylinder, a distributor connected to the stopcock valve, and a combustion cylinder connected to the other end of the distributor. The combustion cylinder is provided with a primary premixing chamber and a secondary premixing chamber. The upper end of each secondary premixing chamber is provided with a windproof duct. There are cavities between the primary premixing chamber, the secondary premixing chamber and the combustion cylinder.

[0006] The combustion chamber has multiple first air inlets on its wall corresponding to the primary premixing chamber section. At the same time, multiple primary premixing chamber air inlets are also provided on the shell of the primary premixing chamber. The primary premixing chamber air inlets and the first air inlets are staggered.

[0007] The combustion chamber has multiple second air inlets on its wall corresponding to the secondary premixing chamber section. At the same time, multiple secondary premixing chamber air inlets are also provided on the shell of the secondary premixing chamber. The secondary premixing chamber air inlets and the second air inlets are staggered.

[0008] Both the air inlet of the primary premixing chamber and the air inlet of the secondary premixing chamber are equipped with filters.

[0009] Preferably, the two outlet ends of the splitter are connected to the primary premixing chamber and the secondary premixing chamber respectively through the first pipeline and the second pipeline. The outlet end of the first pipeline is connected to the primary premixing chamber through the ejector. The secondary premixing chamber is located on top of the primary premixing chamber, and the two are connected.

[0010] Preferably, the outlet end of the first pipeline is connected to the inlet end of the ejector, the outlet end of the ejector is connected to the primary premixing chamber, and a preheating circuit is connected between the inlet end and the outlet end of the ejector.

[0011] Preferably, a mixing blade is provided at the air inlet of the primary premixing chamber, and an installation shaft is rotatably connected to the middle of the mixing blade. A guide tube is provided at the upper end of the primary premixing chamber, and the two ends of the installation shaft are rotatably connected to the bottom of the combustion chamber and the guide tube, respectively.

[0012] Preferably, the ejector's outlet end is provided with an annular tube, and the annular tube has multiple outlets in the circumferential direction.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] (1) This utility model adopts a design in which the air inlet of the combustion chamber and the air inlet of the premixing chamber are staggered in both the primary and secondary premixing chambers. Combined with a filter screen, it effectively prevents rainwater and debris from directly entering the premixing chamber. At the same time, it uses the heat of combustion to vaporize a small amount of water, ensuring combustion stability. The windproof structure at the top of the secondary premixing chamber optimizes the flame shape and reduces the impact of strong winds on combustion.

[0015] (2) This utility model significantly improves the uniformity of fuel-air mixing by using a series design of a primary premixing chamber and a secondary premixing chamber, combined with the multi-directional injection of mixing blades and annular pipe. The mixing blades are driven to rotate by the airflow, forming turbulence in the premixing chamber and enhancing the mixing effect; the multi-outlet design of the annular pipe allows the fuel to be sprayed out at multiple angles, working synergistically with the air entering from multiple directions to accelerate the mixing process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the combustion chamber of this utility model.

[0018] The following are the labels in the diagram: 1. Plug valve; 2. Combustion cylinder; 201. First air inlet; 202. Second air inlet; 3. First pipeline; 4. Second pipeline; 5. Primary premixing chamber; 501. Primary premixing chamber air inlet; 502. Flow guide tube; 6. Secondary premixing chamber; 601. Secondary premixing chamber air inlet; 602. Windproof tube; 7. Mixing blades; 8. Mounting shaft; 9. Filter screen; 10. Annular tube. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example:

[0021] Please see Figure 1-2 A handheld torch burner includes a stopcock valve 1 connected to a gas cylinder, a distributor connected to the stopcock valve 1, and a combustion chamber 2 connected to the other end of the distributor. The combustion chamber 2 contains a primary premixing chamber 5 and a secondary premixing chamber 6. Each secondary premixing chamber 6 has a windproof duct 602 at its upper end. The windproof duct 602 at the top of the secondary premixing chamber 6 optimizes the flame shape and reduces the impact of strong winds on combustion. There are cavities between the primary premixing chamber 5, the secondary premixing chamber 6, and the combustion chamber 2. The two outlet ends of the distributor are connected to the primary premixing chamber 5 and the secondary premixing chamber 6 respectively via a first pipe 3 and a second pipe 4. The outlet end of the first pipe 3 is connected to the primary premixing chamber 5 via an ejector. The secondary premixing chamber 6 is located on top of the primary premixing chamber 5, and the two are connected. The fuel in the gas cylinder flows out through the stopcock valve 1 and enters the primary premixing chamber 5 and the secondary premixing chamber 6 respectively. Outside air is drawn in through the first air inlet 201. The fuel and air are initially mixed in the primary premixing chamber 5. The other fuel, which passes through the second pipeline 4, directly enters the secondary premixing chamber 6. The primary premixing chamber 5 and the secondary premixing chamber 6 are connected, so that the mixed gas after primary premixing can also enter the secondary premixing chamber 6 and be further mixed with the fuel in the secondary premixing chamber 6.

[0022] The combustion cylinder 2 has multiple first air inlets 201 on its cylinder wall corresponding to the section of the primary premixing chamber 5. At the same time, multiple primary premixing chamber air inlets 501 are also provided on the shell of the primary premixing chamber 5. The primary premixing chamber air inlets 501 and the first air inlets 201 are staggered. Outside air enters the primary premixing chamber 5 through the first air inlets 201 and the primary premixing chamber air inlets 501. The staggered arrangement of the first air inlets 201 and the primary premixing chamber air inlets 501 prevents external debris or water vapor from directly entering the primary premixing chamber 5 during severe weather.

[0023] The combustion chamber 2 has multiple second air inlets 202 on its wall corresponding to the section of the secondary premixing chamber 6. At the same time, multiple secondary premixing chamber air inlets 601 are also provided on the shell of the secondary premixing chamber 6. The secondary premixing chamber air inlets 601 and the second air inlets 202 are staggered. Outside air enters the secondary premixing chamber 6 through the second air inlets 202 and the secondary premixing chamber air inlets 601. The staggered arrangement of the second air inlets 202 and the secondary premixing chamber air inlets 601 prevents external debris or water vapor from directly entering the secondary premixing chamber 6 during severe weather. Even if a small amount of debris or water droplets enter, they will first come into contact with the outer wall of the primary premixing chamber 5 or the secondary premixing chamber 6. Due to the high temperature of the outer wall of the premixing chamber and the combustion cylinder 2 during combustion, the water droplets will quickly vaporize after contacting the high-temperature wall surface and mix into the intake airflow in the form of water vapor. They will then enter the combustion zone with the air, thus avoiding the influence of liquid water on the mixing ratio of fuel and air and the combustion effect. Meanwhile, the debris will slide down the wall surface to the bottom of the burner or be blocked near the air inlet due to gravity and airflow impact, and will not be able to enter the premixing chamber.

[0024] Both the primary premixing chamber air inlet 501 and the secondary premixing chamber air inlet 601 are equipped with filters 9, which can prevent impurities from entering the premixing chamber.

[0025] In this application, the outlet end of the first pipeline 3 is connected to the inlet end of the ejector, and the outlet end of the ejector is connected to the primary premixing chamber 5. A preheating circuit is connected between the inlet end and the outlet end of the ejector. The preheating circuit utilizes the heat generated by combustion to preheat the fuel. The preheated fuel can burn more completely, thereby improving fuel utilization and reducing harmful exhaust emissions caused by incomplete combustion.

[0026] In this application, a mixing blade 7 is installed in the primary premixing chamber 5 at the air inlet 501. An installation shaft 8 is rotatably connected to the middle of the mixing blade 7. A guide tube 502 is installed at the upper end of the primary premixing chamber 5. The two ends of the installation shaft 8 are rotatably connected to the bottom of the combustion chamber 2 and the guide tube 502, respectively. Under the negative pressure ejection action of the ejector, when fuel in the gas cylinder flows into the ejector through the stopcock valve 1 and the first pipeline 3, the fuel is ejected at high speed, forming a local negative pressure area at the ejector inlet. At this time, outside air is drawn in through the side wall of the primary premixing chamber and the first air inlet 501 under atmospheric pressure, and mixes with the fuel ejected from the ejector in the primary premixing chamber 5. This design utilizes fluid dynamics principles to achieve active air intake without the need for an additional power unit. Furthermore, air intake holes at different locations can introduce air from multiple directions. When a mixing blade 7 is installed at the air intake hole 501 of the primary premixing chamber, the air intake will drive the mixing blade 7 to rotate, causing the fuel and air to form turbulent mixing in the premixing chamber, thus improving the uniformity of the initial mixing.

[0027] In this application, the ejector is provided with an annular tube 10 at its outlet end. The annular tube 10 has multiple outlets in the circumferential direction. The multiple outlets allow fuel to be ejected from different directions, which in turn interact with air entering from multiple directions, thus enabling the air and fuel to mix rapidly.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A handheld torch burner, comprising a stopcock valve (1) connected to a gas cylinder, characterized in that: A flow divider is connected to the plug valve (1), and a combustion cylinder (2) is connected to the other end of the flow divider. A primary premixing chamber (5) and a secondary premixing chamber (6) are provided inside the combustion cylinder (2). A windproof duct (602) is provided at the upper end of each secondary premixing chamber (6). There are cavities between the primary premixing chamber (5) and the secondary premixing chamber (6) and the combustion cylinder (2). The combustion cylinder (2) has multiple first air inlets (201) on the cylinder wall corresponding to the section of the primary premixing chamber (5), and multiple primary premixing chamber air inlets (501) are also provided on the shell of the primary premixing chamber (5). The primary premixing chamber air inlets (501) and the first air inlets (201) are staggered. The combustion cylinder (2) has multiple second air inlets (202) on the cylinder wall corresponding to the section of the secondary premixing chamber (6), and multiple secondary premixing chamber air inlets (601) are also provided on the shell of the secondary premixing chamber (6). The secondary premixing chamber air inlets (601) and the second air inlets (202) are staggered. Both the primary premix chamber air inlet (501) and the secondary premix chamber air inlet (601) are equipped with filters (9).

2. The handheld torch burner according to claim 1, characterized in that: The two outlets of the splitter are connected to the primary premixing chamber (5) and the secondary premixing chamber (6) respectively through the first pipe (3) and the second pipe (4). The outlet of the first pipe (3) is connected to the primary premixing chamber (5) through an ejector. The secondary premixing chamber (6) is located on top of the primary premixing chamber (5) and the two are connected.

3. A handheld torch burner according to claim 2, characterized in that: The outlet end of the first pipeline (3) is connected to the inlet end of the ejector, the outlet end of the ejector is connected to the first-stage premixing chamber (5), and a preheating circuit is connected between the inlet end and the outlet end of the ejector.

4. A handheld torch burner according to claim 1, characterized in that: A mixing blade (7) is provided in the primary premixing chamber (5) at the air inlet (501). An installation shaft (8) is rotatably connected to the middle of the mixing blade (7). A guide tube (502) is provided at the upper end of the primary premixing chamber (5). The two ends of the installation shaft (8) are rotatably connected to the bottom of the combustion cylinder (2) and the guide tube (502) respectively.

5. A handheld torch burner according to claim 3, characterized in that: The ejector is provided with an annular tube (10) at its outlet end, and the annular tube (10) has multiple outlets in the circumferential direction.

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