An outdoor alcohol burner

Abstract

The utility model provides an outdoor alcohol stove, including the outer tube, still include the inner tube of setting in the outer tube, the inner tube is filled with alcohol fuel, the side of outer tube is annular array and is provided with a plurality of air inlet hole, the inboard of outer tube is provided with the support cylinder for fixing the inner tube, and the inner tube sets up in the support cylinder, the top side array of outer tube is provided with a plurality of bracket for supporting the pot, and the common setting of a plurality of bracket has the net frame, and the combustion net is set up on the net frame and is interwoven, and the flame of alcohol fuel passes through the combustion net and heats to the bottom of the pot. The utility model provides an outdoor alcohol stove, through the setting of combustion net, avoid the problem of black smoke because of the insufficient combustion, improve the thermal efficiency, through the annular gap of inner tube, the flow guide groove, the annular groove and the setting of combustion hole, make the alcohol of liquid state convert into stable steam, and spray upward through a plurality of combustion holes, and the air intake design is more reasonable, and the combustion supporting effect is better.

Description

Technical Field

[0001] This utility model relates to the field of outdoor products technology, specifically to an outdoor alcohol stove. Background Technology

[0002] Alcohol stoves have become a popular cooking appliance for outdoor activities due to their readily available fuel, portability, and clean combustion. Traditional outdoor alcohol stoves typically have a simple structure, generally consisting of an open combustion cup for holding alcohol. While simple and lightweight, this design has several significant drawbacks. Traditional alcohol stoves often lack dedicated airflow design, resulting in insufficient mixing of alcohol vapor and air, lower flame temperatures, and the production of yellow flames and black smoke due to incomplete combustion, polluting cookware and the environment, and exhibiting low combustion efficiency. Therefore, some improved alcohol stove designs have emerged in the current technology. For example, some designs incorporate wind shields with added air intakes to improve combustion efficiency.

[0003] However, existing outdoor alcohol stoves still suffer from insufficient mixing of alcohol vapor and air, resulting in relatively low combustion efficiency. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an outdoor alcohol stove. Through the design of the combustion mesh, the heated mesh further and more fully combusts the alcohol vapor, improving the combustion state of the alcohol and thus avoiding the black smoke problem caused by incomplete combustion. Simultaneously, it concentrates heat on the bottom of the cookware, improving thermal efficiency. The annular gap, guide groove, annular groove, and combustion holes in the inner cylinder allow the liquid alcohol to be converted into stable vapor, which is then sprayed upwards through multiple combustion holes. The air intake design is more rational, resulting in better combustion assistance.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an outdoor alcohol stove, including an outer cylinder and an inner cylinder disposed inside the outer cylinder, wherein the inner cylinder contains alcohol fuel, and the side of the outer cylinder is provided with a plurality of air inlets arranged in a circular array, and the inner side of the outer cylinder is provided with a support cylinder for fixing the inner cylinder, wherein the inner cylinder is disposed inside the support cylinder;

[0006] The top side of the outer cylinder is provided with several brackets for supporting the pot. A mesh frame is provided between the brackets. A combustion mesh is interwoven on the mesh frame. The flame of the alcohol fuel passes through the combustion mesh and heats the bottom of the pot.

[0007] The top inner edge of the outer cylinder is provided with several hinge seats, the bracket is hinged on the hinge seats, the edge of the mesh frame is provided with several snap-fit ​​grooves, the combustion mesh is arranged around the bottom of the snap-fit ​​grooves, and one side of the bracket is snapped into the side of the snap-fit ​​groove in a separable manner.

[0008] A support platform is provided on the bottom side of the outer cylinder, and the support cylinder is placed on the support platform. The outer diameter of the support cylinder tapers from the bottom to the top. A flow gap is formed between the outer top of the support cylinder and the inner side of the outer cylinder. The air inlet passes through the flow gap and is connected to the opening side of the inner cylinder.

[0009] The inner cylinder includes a sleeve and an inner wall disposed within the sleeve. The alcohol fuel is disposed at the bottom of the sleeve. The top of the inner wall is connected to the top of the sleeve. An annular gap is formed between the inner wall and the sleeve. The annular gap passes through the bottom of the inner wall and communicates with the alcohol fuel.

[0010] An annular groove is provided on the upper side of the inner wall, and a plurality of combustion holes are arrayed on the annular groove, with the plurality of combustion holes facing the combustion mesh.

[0011] The inner wall is vertically provided with several flow guide grooves. One end of each flow guide groove is connected to the annular groove, and the other end of each flow guide groove is connected to the alcohol fuel inside the sleeve.

[0012] The bracket is provided with at least 3, one side of the bracket is provided with a corrugated part that contacts the pot, and the other side of the bracket is detachably abutted against the edge of the outer cylinder.

[0013] The combustion mesh has an alcohol injection hole at its center.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) By setting up the combustion net, the heated combustion net will further burn the alcohol vapor more fully, improve the combustion state of the alcohol, and thus avoid the black smoke problem caused by incomplete combustion. At the same time, the heat is concentrated on the bottom of the pot, which improves the thermal efficiency. Through the setting of the annular gap, guide groove, annular groove and combustion hole of the inner cylinder, the liquid alcohol is converted into stable vapor and sprayed upward through multiple combustion holes. The air intake design is more reasonable and the combustion effect is better.

[0016] (2) The bracket adopts a hinged design, which can be folded and stored. The snap-fit ​​fixing with the wire mesh frame is more stable and reliable. When folded, it is more compact, making it easy to store and carry outdoors. The corrugated part design can effectively prevent the cookware from sliding, enhance the safety of use, and improve the safety and reliability of the product.

[0017] (3) After the external cold air enters through the air inlet, it rises along the flow gap between the support cylinder and the outer cylinder, and is preheated into hot air during this process. After the preheated air reaches the top of the furnace body, it can participate in the combustion reaction more effectively, providing a sufficient and efficient oxygen supply for the alcohol vapor, thereby ensuring strong and continuous firepower and improving the overall combustion performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the space frame of this utility model;

[0021] Figure 4 This is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 5 This is a schematic diagram of the flow gap structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the inner cylinder of this utility model.

[0024] In the figure: 1. Outer cylinder; 11. Air inlet; 12. Hinge seat; 13. Support platform; 2. Inner cylinder; 21. Sleeve; 22. Inner wall; 221. Annular groove; 222. Combustion hole; 223. Flow guide groove; 23. Annular gap; 3. Support cylinder; 4. Bracket; 41. Corrugated part; 5. Grid frame; 51. Snap-fit ​​groove; 6. Combustion grid; 7. Flow gap. Detailed Implementation

[0025] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0026] See Figures 1-6 An outdoor alcohol stove includes an outer cylinder 1 and an inner cylinder 2 disposed inside the outer cylinder 1. The inner cylinder 2 contains alcohol fuel. The outer cylinder 1 has a plurality of air inlets 11 arranged in a ring array on its side. The inner side of the outer cylinder 1 is provided with a support cylinder 3 for fixing the inner cylinder 2. The inner cylinder 2 is disposed inside the support cylinder 3.

[0027] The top side of the outer cylinder 1 is provided with several brackets 4 for supporting the cookware. A mesh frame 5 is provided between the brackets 4. A combustion mesh 6 is interwoven on the mesh frame 5. The flame of the alcohol fuel passes through the combustion mesh 6 and heats the bottom of the cookware. That is, the flame of the alcohol fuel is sprayed upward through the combustion mesh 6 and heats the bottom of the cookware.

[0028] The top inner edge of the outer cylinder 1 is provided with several hinge seats 12, and the bracket 4 is hinged on the hinge seats 12. The edge of the mesh frame 5 is provided with several snap-fit ​​grooves 51. The combustion mesh 6 is arranged around the bottom of the snap-fit ​​groove 51. One side of the bracket 4 is snapped detachably with the side of the snap-fit ​​groove 51. More specifically, the combustion mesh 6 is made of nickel-chromium wire wrapped in the snap-fit ​​groove 51 of the mesh frame 5.

[0029] A support platform 13 is provided on the bottom side of the outer cylinder 1, and the support cylinder 3 is provided on the support platform 13. The outer diameter of the support cylinder 3 shrinks from the bottom to the top. A flow gap 7 is formed between the outer top of the support cylinder 3 and the inner side of the outer cylinder 1. The air inlet 11 is connected to the opening side of the inner cylinder 2 through the flow gap 7. Specifically, the air inlet 11 is connected to the opening side of the inner cylinder 2 through the flow gap 7.

[0030] The inner cylinder 2 includes a sleeve 21 and an inner wall 22 disposed inside the sleeve 21. Alcohol fuel is disposed at the bottom of the sleeve 21. The top of the inner wall 22 is connected to the top of the sleeve 21. Specifically, the top of the inner wall 22 is integrally formed with the top of the sleeve 21. An annular gap 23 is formed between the inner wall 22 and the sleeve 21. The annular gap 23 passes through the bottom of the inner wall 22 and communicates with the alcohol fuel.

[0031] An annular groove 221 is provided on the upper side of the inner wall 22, and a number of combustion holes 222 are arrayed on the annular groove 221, with the combustion holes 222 facing the combustion mesh 6.

[0032] The inner wall 22 is vertically provided with several guide grooves 223. One end of the guide groove 223 is connected to the annular groove 221, and the other end of the guide groove 223 is connected to the alcohol fuel in the sleeve 21.

[0033] At least three brackets 4 are provided. One side of the bracket 4 is provided with a corrugated part 41 that contacts the pot, and the other side of the bracket 4 is detachably abutted against the edge of the outer cylinder 1.

[0034] The center of the combustion mesh 6 is provided with an injection hole 61 for adding alcohol.

[0035] The specific working process of this utility model:

[0036] In use, first unfold the bracket 4 along the outer cylinder 1, then place the inner cylinder 2 inside the support cylinder 3 of the outer cylinder 1, then place the mesh frame 5 on the top side of the bracket 4 and fix it by snapping it into the top side of the bracket 4 through the snap-fit ​​groove 51 of the mesh frame 5. Use an alcohol fuel bottle to add alcohol into the inner cylinder 2 through the filling hole 6, then use an igniter to insert into the inner cylinder 2 to ignite the alcohol. Then place the pot above the combustion mesh 6 of the bracket 4, and the flame of the alcohol passes through the combustion mesh 6 to heat the pot.

[0037] The heat generated during preheating is transferred to the inner wall 22 of the inner cylinder 2 and the bottom of the sleeve 21. The liquid alcohol at the bottom of the sleeve 21 absorbs the heat and begins to vaporize, forming alcohol vapor. The liquid alcohol enters the annular gap 23 through the opening at the bottom of the inner wall 22, and rises and diffuses upwards with the help of the capillary action of the vertical guide groove 223 on the inner wall 22. During the rising process, the alcohol is also heated and vaporized, and finally collects in the annular groove 221 on the upper side of the inner wall 22.

[0038] High-pressure alcohol vapor collected in the annular groove 221 is ejected outward through several combustion holes 222 in the annular array. The ejected alcohol vapor mixes with air at the mesh frame 5 and is ignited by the continuous flame on the combustion mesh 6, forming multiple concentrated and stable vertical flames. The combustion mesh 6 itself is heated to a high temperature, which can ignite the passing alcohol vapor, ensuring the continuity and stability of combustion, effectively preventing flameout problems caused by fuel supply fluctuations, and also avoiding the problem of incomplete alcohol combustion producing black smoke.

[0039] The combustion process requires a continuous supply of oxygen. Under the influence of heat, external air enters the furnace body through the air inlet 11 of the annular array on the lower side wall of the outer cylinder 1. The air flows through the flow gap 7 between the support cylinder 3 and the inner side of the outer cylinder 1, where it is preheated. Then it rises to the top of the furnace body, providing sufficient oxygen for the combustion of alcohol vapor, which greatly improves combustion efficiency and thermal energy utilization.

[0040] The flame heats the upper wire mesh frame 5, which evenly distributes and transfers heat to the bottom of the pot placed on the bracket 4, achieving efficient heating of the food inside the pot. When the pot is not placed, the heat radiation generated by the flame heating the wire mesh frame 5 also has the effect of providing warmth outdoors.

[0041] After use, simply cover the flame with the dedicated flameout cap (not shown in the picture, but a standard technique in the field) to extinguish the flame and isolate it from the air. All components of the furnace are designed with heat dissipation and safety clearances in mind to ensure safe storage after use.

[0042] By setting up the combustion mesh 6, the heated combustion mesh 6 further and fully combusts the alcohol vapor, improving the combustion state of the alcohol and thus avoiding the black smoke problem caused by incomplete combustion. At the same time, it concentrates the heat on the bottom of the pot, improving thermal efficiency. Through the setting of the annular gap 23, the guide groove 223, the annular groove 221 and the combustion hole 222 in the inner cylinder 2, the liquid alcohol is converted into stable vapor and sprayed upward through multiple combustion holes 222. The air intake design is more reasonable and the combustion-supporting effect is better.

[0043] The bracket 4 features a hinged design, allowing for folding and storage. Its snap-fit ​​connection with the mesh frame 5 ensures greater stability and reliability. When folded, it is more compact, making it easy to store and carry outdoors. The corrugated part 41 effectively prevents the cookware from sliding, enhancing safety during use and improving the safety and reliability of the product.

[0044] After entering through the air inlet 11, the external cold air rises along the flow gap 7 between the support cylinder 3 and the outer cylinder 1, and is preheated into hot air during this process. The preheated air can participate in the combustion reaction more effectively after reaching the top of the furnace body, providing a sufficient and efficient oxygen supply for the alcohol vapor, thereby ensuring strong and continuous firepower and improving the overall combustion performance.

[0045] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

Claims

1. An outdoor alcohol stove, comprising an outer cylinder (1), characterized in that, It also includes an inner cylinder (2) disposed inside the outer cylinder (1), the inner cylinder (2) contains alcohol fuel, the outer cylinder (1) has a plurality of air inlets (11) arranged in a ring array on its side, and a support cylinder (3) for fixing the inner cylinder (2) is disposed inside the outer cylinder (1), the inner cylinder (2) is disposed inside the support cylinder (3). The top side of the outer cylinder (1) is provided with a plurality of brackets (4) for supporting the pot. A mesh frame (5) is provided between the plurality of brackets (4). A combustion mesh (6) is interwoven on the mesh frame (5). The flame of the alcohol fuel passes through the combustion mesh (6) and heats the bottom of the pot.

2. The outdoor alcohol stove according to claim 1, characterized in that, The top inner edge of the outer cylinder (1) is provided with several hinge seats (12), the bracket (4) is hinged on the hinge seats (12), the edge of the mesh frame (5) is provided with several snap-fit ​​grooves (51), the combustion mesh (6) is provided around the bottom of the snap-fit ​​groove (51), and one side of the bracket (4) is snap-fitted to the side of the snap-fit ​​groove (51).

3. The outdoor alcohol stove according to claim 2, characterized in that, A support platform (13) is provided on the bottom side of the outer cylinder (1), and the support cylinder (3) is provided on the support platform (13). The outer diameter of the support cylinder (3) shrinks from the bottom to the top. A flow gap (7) is formed between the outer top of the support cylinder (3) and the inner side of the outer cylinder (1). The air inlet (11) passes through the flow gap (7) and is connected to the opening side of the inner cylinder (2).

4. The outdoor alcohol stove according to claim 2, characterized in that, The inner cylinder (2) includes a sleeve (21) and an inner wall (22) disposed inside the sleeve (21). The alcohol fuel is disposed at the bottom of the sleeve (21). The top of the inner wall (22) is connected to the top of the sleeve (21). An annular gap (23) is formed between the inner wall (22) and the sleeve (21). The annular gap (23) passes through the bottom of the inner wall (22) and communicates with the alcohol fuel. An annular groove (221) is provided on the upper side of the inner wall (22), and a plurality of combustion holes (222) are arrayed on the annular groove (221), with the plurality of combustion holes (222) facing the combustion mesh (6).

5. The outdoor alcohol stove according to claim 4, characterized in that, The inner wall (22) is vertically provided with a number of guide grooves (223). One end of the guide groove (223) is connected to the annular groove (221), and the other end of the guide groove (223) is connected to the alcohol fuel in the sleeve (21).

6. The outdoor alcohol stove according to claim 2, characterized in that, At least three brackets (4) are provided. One side of the bracket (4) is provided with a corrugated part (41) that contacts the pot. The other side of the bracket (4) is detachably abutted against the edge of the outer cylinder (1).

7. The outdoor alcohol stove according to claim 2, characterized in that, The combustion mesh (6) has an injection hole (61) for adding alcohol at its center.

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