A portable low power outdoor liquid fuel burner

Abstract

The utility model discloses a portable low -power outdoor liquid fuel combustion stove, including furnace head, furnace tray support, air pipe and control box, the furnace head is in the cylinder and outer tube composition, the hollow closed cavity structure between the inner tube and outer tube, the inner tube's center is equipped with the oil nozzle with cavity structure inside intercommunication, the control box is through the air pipe with the cavity structure inside intercommunication of furnace head, be equipped with oil pump and fan in the control box, the oil pump is through the oil pipe with the cavity structure inside intercommunication of furnace head, the air outlet of fan is opposite the air inlet of air pipe. Compared with the prior art, the utility model simple structure, low cost, convenient to use, with liquid fuel as raw material, good safety, low cost, is fit for outdoor use, also can carry on the business stall use, through the structural design of air pipe can separate furnace head and control box, facilitate the switch control of combustion stove when furnace head high temperature combustion, convenient to use after taking.

Description

Technical Field

[0001] This utility model relates to the field of outdoor stoves, and in particular to a portable, low-power outdoor liquid fuel combustion stove. Background Technology

[0002] The main types of outdoor stoves currently available are gasoline stoves, mini gas stoves, portable gas stoves, and electric stoves.

[0003] The advantages of mini gas stoves are their small size and portability. They only require a burner and a gas canister. The gas canister provides fuel to the stove for combustion. The disadvantages are that, due to the small size of the gas canister, the fuel storage is limited, the heat output is low, and large pots cannot be used for stir-frying. They are suitable for single-person use for brewing tea and heating food, but not for commercial use.

[0004] A portable butane gas stove, also known as a cartridge stove, refers to a non-fixed cooking appliance that primarily uses butane gas, but can also use other gases such as natural gas or liquefied petroleum gas (LPG) as fuel, and is heated directly by an open flame. Its disadvantages include the safety risks associated with using butane gas as the primary fuel, and the high cost of using natural gas or LPG. A single meal may require one gas cylinder, making it unsuitable for commercial use. In high-altitude areas like Xinjiang and Tibet, safety inspections of gas cylinders are very strict, and they often fail to pass security checks.

[0005] Gasoline stoves use gasoline as fuel, offering powerful firepower and an economical price, making them suitable for long-term use. However, gasoline is flammable and explosive, posing a safety risk and making it unsuitable for commercial use.

[0006] Electric stoves require outdoor portable power supplies, which are bulky, expensive, and difficult to carry.

[0007] Outdoor street vending is for commercial use, requiring a large fuel supply that is portable, inexpensive, and safe. While the aforementioned stoves each have their advantages, they are only suitable for temporary use and not for commercial purposes. Therefore, traditionally, liquefied natural gas (LNG) cylinders are still used for street vending.

[0008] Traditional liquefied petroleum gas (LPG) suffers from problems such as low calorific value, high cost, low flash point, flammability, explosiveness, and significant safety hazards. Due to the substantial safety risks associated with LPG, national monitoring is becoming increasingly stringent. This has led to a shift in commercial stove fuels towards safer fuels with higher flash points—liquid fuels (coal-based liquid fuels). With further development, liquid fuels will gradually replace gaseous fuels in commercial applications. Utility Model Content

[0009] The purpose of this invention is to provide a portable, low-power outdoor liquid fuel burner that solves the above-mentioned problems.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a portable low-power outdoor liquid fuel combustion stove, comprising a burner head, a burner plate support, an air duct, and a control box. The burner head is a concave cylindrical shape, composed of an inner cylinder and an outer cylinder. The space between the inner and outer cylinders is a hollow, closed cavity structure. An oil nozzle communicating with the interior of the cavity structure is provided at the center of the inner cylinder. The front and rear ends of the air duct are fixedly connected to the burner head and the control box, respectively. The control box is connected to the interior of the cavity structure of the burner head through the air duct. The control box contains an oil pump and a fan. The oil pump is connected to the interior of the cavity structure of the burner head through an oil delivery pipe. The air outlet of the fan is directly opposite the air inlet of the air duct.

[0011] Preferably, the control box is equipped with a controller, and a switch is provided on the end face of the control box. The controller is electrically connected to the switch, the fan and the oil pump respectively.

[0012] Preferably, the front end of the duct has a tapered shape.

[0013] Preferably, the air outlet of the air duct is provided with a tapered constriction structure, which is fixed inside the air duct, and the air inlet end of the constriction structure is the same as the inner diameter of the air duct.

[0014] Preferably, there is a gap between the bottom of the inner cylinder and the bottom of the outer cylinder of the burner head, and the height of the tapering structure is not higher than the bottom of the inner cylinder.

[0015] Preferably, the duct is a rectangular tube.

[0016] Preferably, the inner and outer cylinders of the burner head are connected by a rounded transition at the upper ends.

[0017] Preferably, the bottom of the control box has an open structure.

[0018] Preferably, the burner head is fixed to the burner plate support.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] This utility model has a simple structure, low cost, and is easy to use. It uses liquid fuel as raw material, has good safety, low cost, and is suitable for outdoor use. It can also be used for commercial stalls. The structure design of the air duct can separate the burner head and the control box, which makes it easy to control the stove when the burner head is burning at high temperature, and also makes it easy to take it away after use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 4 This is a physical image of the present invention.

[0025] In the diagram: 1. Burner head; 11. Inner cylinder; 12. Outer cylinder; 2. Burner plate support; 3. Oil injector; 4. Air duct; 5. Control box; 6. Oil supply pipe; 7. Switch; 8. Fan; 9. Oil pump; 10. Controller; 13. Closure structure. Detailed Implementation

[0026] The present invention will be further described below, as follows: See Figures 1 to 4 A portable, low-power outdoor liquid fuel burner includes a burner head 1, a burner plate support 2, an air duct 4, and a control box 5. The burner head 1 is fixed on the burner plate support 2 and is a concave cylindrical shape, consisting of an inner cylinder 11 and an outer cylinder 12. The inner cylinder 11 and the outer cylinder 12 form a hollow, closed cavity structure. An oil nozzle 3 communicating with the interior of the cavity structure is provided at the center of the inner cylinder 11. The front and rear ends of the air duct 4 are fixedly connected to the burner head 1 and the control box 5, respectively. The control box 5 is connected to the interior of the cavity structure of the burner head 1 through the air duct 4. The control box 5 contains an oil pump 9 and a fan 8. The oil pump 9 is connected to the interior of the cavity structure of the burner head 1 through an oil supply pipe 6. The air outlet of the fan 8 is directly opposite the air inlet of the air duct 4. This utility model has a simple structure, low cost, and is easy to use. It uses liquid fuel as raw material, has good safety, low cost, and is suitable for outdoor use. It can also be used for commercial stalls. The structural design of the air duct 4 can separate the burner head 1 and the control box 5, which makes it easy to control the stove switch 7 when the burner head 1 is burning at high temperature. At the same time, the air duct 4 serves as the connection between the burner head 1 and the control box 5, making it very convenient to take out the stove. There is no need to worry about the burner head 1 being too hot to take out after use.

[0027] In use, place igniter in the groove of burner head 1 and ignite it to generate high temperature inside burner head 1, which will ignite the vaporized liquid fuel. The heat generated by the combustion of the liquid fuel continuously heats the liquid fuel in the closed cavity, so that it is vaporized and discharged through the fuel injector 3 for combustion and heating. The liquid fuel burns with an open flame, generating a large amount of heat and providing continuous heating. After the burner is lit, place the pot on the burner plate support 2. When using multiple burners for a stall, connect each burner to the liquid fuel tank through the fuel supply pipe. The liquid fuel does not burn at room temperature and is not prone to explosion, making it extremely safe for commercial use.

[0028] The control box 5 is equipped with a controller 10. A switch 7 is provided on the end face of the control box 5. The controller 10 is electrically connected to the switch 7, the fan 8 and the oil pump 9 respectively. The controller 10 is connected to an external power supply. The controller 10 can control the oil pump 9 and the fan 8 by switching the switch 7. When in use, the oil supply pipeline is connected to the oil pump 9.

[0029] To accelerate the airflow into the burner head 1, the front end of the air duct 4 can be designed as a tapered constriction structure 13. However, since the connection surface of the constriction structure 13 is small, it is not conducive to the connection stability between the air duct 4 and the burner head 1. As a preferred solution, a constriction structure 13 is designed inside the air duct 4. The air outlet of the air duct 4 is provided with a tapered constriction structure 13. The constriction structure 13 is fixed inside the air duct 4, and the air inlet end of the constriction structure 13 is the same as the inner diameter of the air duct 4. When the airflow passes through the constriction structure 13, the flow area is reduced, and the airflow accelerates into the cavity structure of the burner head 1, which is more conducive to the vaporization of liquid fuel and carries the vaporized liquid fuel out from the fuel injector 3.

[0030] To facilitate better airflow within the cavity structure of the burner head 1, a gap is maintained between the bottom of the inner cylinder 11 and the bottom of the outer cylinder 12. The height of the constriction structure 13 is no higher than the bottom of the inner cylinder 11. This allows the airflow to enter along the bottom of the outer cylinder 12, blowing up the liquid fuel at the bottom. After hitting the side wall of the outer cylinder 12, the airflow rises upwards and then returns along the side wall of the inner cylinder 11, converging at the bottom of the inner cylinder 11 before being ejected from the oil nozzle. This path allows for better vaporization and dispersion of the liquid fuel, which is then ejected from the oil nozzle with the airflow. The upper ends of the inner cylinder 11 and the outer cylinder 12 of the burner head 1 are connected by a rounded arc, which further facilitates the reverse flow of airflow along the side wall of the inner cylinder 11.

[0031] The duct 4 can be of various structures, such as a round tube. As a preferred option, the duct 4 in this embodiment is a rectangular tube. The rectangular structure is more conducive to the design of the connection surface, making it easier to fix with screws, and also facilitates the design of the tapering structure 13. The bottom of the control box 5 is an open structure, which facilitates bottom air intake.

[0032] The above provides a detailed description of a portable, low-power outdoor liquid fuel combustion stove provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation and application scope. Changes and improvements to this utility model are possible without exceeding the concept and scope specified in the appended claims. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A portable, low-power outdoor liquid fuel combustion stove, characterized in that: The device includes a burner head, a burner plate support, an air duct, and a control box. The burner head is a concave cylindrical shape, consisting of an inner cylinder and an outer cylinder. The space between the inner and outer cylinders is a hollow, closed cavity structure. An oil nozzle communicating with the interior of the cavity structure is located at the center of the inner cylinder. The front and rear ends of the air duct are fixedly connected to the burner head and the control box, respectively. The control box is connected to the interior of the burner head cavity structure through the air duct. The control box contains an oil pump and a fan. The oil pump is connected to the interior of the burner head cavity structure through an oil delivery pipe. The air outlet of the fan is directly opposite the air inlet of the air duct.

2. A portable low-power outdoor liquid fuel combustion stove according to claim 1, characterized in that: The control box contains a controller, and a switch is provided on the end face of the control box. The controller is electrically connected to the switch, the fan, and the oil pump.

3. A portable low-power outdoor liquid fuel combustion stove according to claim 1, characterized in that: The front end of the duct has a tapered, constricted structure.

4. A portable low-power outdoor liquid fuel combustion stove according to claim 1, characterized in that: The air outlet of the air duct is provided with a tapered constriction structure, which is fixed inside the air duct, and the air inlet end of the constriction structure is the same as the inner diameter of the air duct.

5. A portable low-power outdoor liquid fuel combustion stove according to claim 3 or 4, characterized in that: There is a gap between the bottom of the inner cylinder and the bottom of the outer cylinder of the burner head, and the height of the tapering structure is not higher than the bottom of the inner cylinder.

6. A portable low-power outdoor liquid fuel combustion stove according to claim 1, characterized in that: The air duct is a rectangular tube.

7. A portable low-power outdoor liquid fuel combustion stove according to claim 1, characterized in that: The inner and outer cylinders of the furnace head are connected by a rounded transition at the top.

8. A portable low-power outdoor liquid fuel combustion stove according to claim 1, characterized in that: The bottom of the control box is open.

9. A portable low-power outdoor liquid fuel combustion stove according to claim 1, characterized in that: The burner head is fixed on the burner plate support.

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