A backpack oven

Abstract

The utility model discloses a knapsack stove relates to outdoor stove technical field. In high altitude area, by low air pressure and low temperature environment's double influence, oxygen content is reduced significantly, makes fuel gasification process is hindered, molecular movement slows down, and the contact efficiency of oxygen falls, thereby leads to the situation that fuel is difficult to be ignited. The utility model discloses a knapsack stove main part and air intake mechanism, and air intake mechanism sets up at one end of knapsack stove main part. The utility model discloses a knapsack stove main part, air intake mechanism, gas pipe and fan main body are provided, utilize the work of fan main body, can suck the air of outside into the inside of gas pipe, after air enters gas pipe, when passing through inside oxygen -enriched membrane, the selective permeation characteristic of oxygen -enriched membrane to oxygen and nitrogen makes the oxygen of air inside more quickly through oxygen -enriched membrane and enter knapsack stove main body inside, to improve the oxygen content in the air -intaking, can improve the combustion effect of fuel in knapsack stove main body inside.

Description

Technical Field

[0001] This utility model relates to the field of outdoor stove technology, specifically a backpack stove. Background Technology

[0002] A backpack stove, also known as an outdoor stove, is a device that allows cooking outdoors. People can cook in the wild while engaging in outdoor activities, and it also provides warmth or heating. Outdoor stoves can use firewood, charcoal, and other fuels, making them very convenient to use.

[0003] Regarding the aforementioned technologies, the applicant believes that a backpack stove, when in operation, involves the user loading solid fuels such as wood or charcoal into the combustion chamber. After ignition using an ignition accessory, the fuel burns and releases heat, enabling cooking and heating functions, thus providing convenience for outdoor living. However, in high-altitude areas, the combined effects of low air pressure and low temperature result in significantly reduced oxygen content and thin air. This unique environment hinders the fuel vaporization process, slows molecular movement, and decreases the efficiency of contact with oxygen, making it difficult to ignite the fuel. Even if ignition is successful, insufficient oxygen supply prevents complete oxidation, leading to incomplete combustion and a significant reduction in efficiency. This not only wastes fuel but also fails to meet cooking needs, producing limited heat and even generating harmful gases such as carbon monoxide due to incomplete combustion, severely impacting the backpack stove's performance and user safety. Utility Model Content

[0004] The purpose of this invention is to provide a backpack stove to solve the problem mentioned in the background art, where in high-altitude areas, the oxygen content is significantly reduced due to the combined effects of low air pressure and low temperature, which hinders the fuel gasification process, slows down molecular motion, and reduces the efficiency of contact with oxygen, thus making the fuel difficult to ignite.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a backpack stove, comprising a backpack stove body and an air intake mechanism, wherein the air intake mechanism is disposed at one end of the backpack stove body, the air intake mechanism includes an air inlet that penetrates and is disposed at one end inside the backpack stove body, an air supply pipe is disposed outside the air inlet, a fixing frame is disposed through the air supply pipe, an oxygen enrichment membrane is disposed inside the fixing frame, and a fan body is disposed at the end of the air supply pipe away from the backpack stove body.

[0006] By adopting the above technical solution, the operation of the blower body can draw external air into the interior of the gas transmission pipe. After the air enters the gas transmission pipe, when it passes through the internal oxygen-enriched membrane, the selective permeation characteristics of the oxygen-enriched membrane for oxygen and nitrogen allow the oxygen inside the air to pass through the oxygen-enriched membrane more quickly into the interior of the backpack furnace body, thereby increasing the oxygen content in the intake air and improving the combustion effect of the fuel inside the backpack furnace body.

[0007] Preferably, the bottom of the backpack stove body is evenly provided with support legs, and the two ends of the backpack stove body are evenly provided with ventilation holes.

[0008] By adopting the above technical solution, external air enters the interior of the backpack stove body through the vent, promoting the complete combustion of fuel inside the backpack stove body.

[0009] Preferably, the support legs are provided in three sets, which are symmetrically distributed about the main body of the backpack stove.

[0010] By adopting the above technical solution, the main body of the backpack stove can be easily supported, thereby improving the stability of the backpack stove during operation.

[0011] Preferably, a protective net, made of metal mesh, is provided inside the gas pipeline at one end near the main body of the fan.

[0012] By adopting the above technical solutions, the main body of the wind turbine can be easily protected, and its service life can be extended.

[0013] Preferably, a fixing block is provided at the top of the fixing frame, and the fixing block is connected to the gas pipeline by fixing bolts.

[0014] By adopting the above technical solution, the fixing block can be easily removed from the gas pipeline by removing the fixing bolts, and the oxygen enrichment membrane can be easily removed from the inside of the gas pipeline for replacement, thus improving the practicality of the device.

[0015] Preferably, the oxygen-enriched membrane is made of a polyethersulfone modified material.

[0016] By adopting the above technical solution, the selective permeation characteristics of oxygen-enriched membranes for oxygen and nitrogen are utilized. Oxygen molecules have a stronger diffusion ability and can quickly dissolve on the membrane surface and penetrate the membrane, while gas molecules such as nitrogen diffuse at a relatively slower rate, thereby achieving efficient separation and enrichment of oxygen.

[0017] Preferably, a handle is provided at the top of the fixing block.

[0018] By adopting the above technical solution, users can easily move the fixed block.

[0019] Preferably, the air inlet is provided with an external thread, and the air delivery pipe is provided with a threaded groove that matches the external thread.

[0020] By adopting the above technical solution, the internal threaded groove of the air supply pipe can be separated from the external thread on the air inlet by rotating the air supply pipe. The device can be separated into two parts, which can be conveniently placed inside the backpack, thus facilitating the movement of the device.

[0021] Compared with the prior art, the beneficial effects of this utility model are: By incorporating a backpack stove body, an air intake mechanism, an air supply pipe, and a blower body, the blower body draws in external air into the air supply pipe. After entering the air supply pipe, the air passes through the internal oxygen-enriched membrane. The selective permeability of the oxygen-enriched membrane to oxygen and nitrogen allows oxygen from the air to pass through the membrane more quickly into the backpack stove body, thereby increasing the oxygen content in the intake air and improving the combustion efficiency of the fuel inside the backpack stove body. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall front view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the gas transmission pipe of this utility model; Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 5 This utility model Figure 2 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Ventilation hole; 2. Backpack stove body; 3. Support leg; 4. Air intake mechanism; 401. Gas pipe; 402. Protective net; 403. Fixing frame; 404. Oxygen-enriching membrane; 405. Fan body; 406. Fixing block; 407. Handle; 408. Air inlet; 409. External thread. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1 to 5This embodiment provides a technical solution: a backpack stove, including a backpack stove body 2 and an air intake mechanism 4. The air intake mechanism 4 is located at one end of the backpack stove body 2 and includes an air inlet 408 that penetrates one end of the backpack stove body 2, allowing external air to easily enter the interior of the backpack stove body 2. An air supply pipe 401 is provided outside the air inlet 408 to facilitate air transport. A fixing frame 403 is installed inside the air supply pipe 401, and an oxygen-enriching membrane 404 is installed inside the fixing frame 403. The oxygen-enriching membrane 404 is made of polyethersulfone modified material. Polyethersulfone itself has excellent heat resistance, chemical stability, and mechanical properties. After chemical modification, its oxygen-enriching performance is significantly improved. In high-altitude areas, the burning of fuel in the backpack stove produces a certain amount of heat and corrosive gases. The oxygen-enriching membrane 404 can adapt well to this environment, resist the erosion of heat and gases, and extend its service life, making it suitable for the backpack stove body 2, which has high requirements for durability and environmental adaptability.

[0026] A fan body 405 is located at the end of the gas supply pipe 401 furthest from the main body 2 of the backpack furnace. The fan body 405 utilizes fluid mechanics and electromagnetic drive principles to deliver air. Its core component, the motor, when energized, uses the rotating magnetic field generated by electromagnetic induction to drive the impeller at high speed. During impeller rotation, the blades push air axially or radially, creating a negative pressure zone inside the fan body 405. Under the influence of atmospheric pressure difference, external air continuously flows in to replenish the air supply, and is directionally delivered to the target location through the gas supply pipe 401. This process precisely controls airflow and pressure through motor speed adjustment and impeller structure design, providing stable intake power to the main body 2 of the backpack furnace, meeting the gas flow requirements of the oxygen enrichment membrane 404, ensuring oxygen enrichment and efficient combustion. When selecting components, appropriate models should be chosen based on actual needs. All components required within the fan body 405 are existing technologies and will not be described further below.

[0027] A protective net 402 is provided inside the gas supply pipe 401 near the fan body 405. The protective net 402 is made of metal mesh and can easily protect the fan body 405, extending its service life. A fixing block 406 is provided at the top of the fixing frame 403. The fixing block 406 is connected to the gas supply pipe 401 by fixing bolts. By removing the fixing bolts, the fixing block 406 can be easily removed from the gas supply pipe 401, and the oxygen enrichment membrane 404 can be easily removed from the inside of the gas supply pipe 401 for replacement, improving the practicality of the device. A handle 407 is provided at the top of the fixing block 406 to facilitate the user's movement of the fixing block 406.

[0028] The overall effect of Embodiment 1 is as follows: When the external power supply is activated by a control switch, it drives the fan body 405 to operate, continuously drawing external air into the air supply pipe 401. As the air flows through the oxygen-enriched membrane 404 within the air supply pipe 401, the selective permeation characteristics of the membrane for oxygen and nitrogen allow oxygen molecules, due to their stronger diffusion ability, to quickly dissolve on the membrane surface and penetrate the membrane, while nitrogen and other gas molecules diffuse relatively slowly, thus achieving efficient separation and enrichment of oxygen. The enriched high-concentration oxygen is then transported to the interior of the backpack stove body 2 through the air inlet 408, increasing the oxygen content of the incoming air, promoting complete fuel combustion, and effectively improving the combustion efficiency and performance of the backpack stove body 2 in oxygen-deficient environments such as high altitudes.

[0029] Example 2: Support legs 3 are evenly arranged at the bottom of the backpack stove body 2. Ventilation holes 1 are evenly opened at both ends of the backpack stove body 2 to facilitate the entry of air into the interior of the backpack stove body 2 and promote the complete combustion of fuel inside the backpack stove body 2. Three sets of support legs 3 are arranged symmetrically about the backpack stove body 2, which can facilitate the support of the backpack stove body 2 and improve the stability of the backpack stove body 2 during operation.

[0030] The effect achieved by the entire embodiment 2 is as follows: when the backpack stove body 2 is working, external air enters the interior of the backpack stove body 2 through the vent 1, promoting the full combustion of fuel inside the backpack stove body 2.

[0031] Example 3: The air inlet 408 is provided with an external thread 409, and the air delivery pipe 401 is provided with a threaded groove that matches the external thread 409.

[0032] The effect achieved by the entire embodiment 3 is that by rotating the air supply pipe 401, the internal thread groove of the air supply pipe 401 can be separated from the external thread 409 on the air inlet 408, and the device can be separated into two parts, which makes it easy to place the device inside the backpack, thereby facilitating the movement of the device.

[0033] Working Principle: The user loads solid fuels such as wood or charcoal into the main body 2 of the backpack stove. After ignition with the help of the ignition accessories, the fuel burns and releases heat energy. Then, the user activates the external power supply using the control switch. The external power supply drives the fan body 405 to operate, continuously drawing external air into the air supply pipe 401. When the air flows through the oxygen-enriched membrane 404 in the air supply pipe 401, the selective permeation characteristics of the oxygen-enriched membrane 404 for oxygen and nitrogen allow oxygen molecules to diffuse more quickly, dissolving rapidly on the membrane surface and penetrating the membrane, while nitrogen and other gas molecules diffuse relatively slowly, thus achieving efficient separation and enrichment of oxygen. The enriched high-concentration oxygen is then transported into the main body 2 of the backpack stove through the air inlet 408, increasing the oxygen content of the incoming air, promoting complete fuel combustion, and effectively improving the combustion efficiency and performance of the main body 2 of the backpack stove in oxygen-deficient environments such as high altitudes. Finally, after the device is used, by rotating the air supply pipe 401, the internal threaded groove of the air supply pipe 401 can be separated from the external thread 409 on the air inlet 408, and the device can be separated into two parts, which can be conveniently placed inside the backpack, thus making it easy to move the device.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A backpack stove, characterized in that: include: Backpack stove body (2); An air intake mechanism (4) is provided at one end of the backpack stove body (2). The air intake mechanism (4) includes an air inlet (408) that penetrates one end of the backpack stove body (2). An air supply pipe (401) is provided outside the air inlet (408). A fixing frame (403) is provided inside the air supply pipe (401). An oxygen enrichment membrane (404) is provided inside the fixing frame (403). A fan body (405) is provided at the end of the air supply pipe (401) away from the backpack stove body (2).

2. A backpack stove according to claim 1, characterized in that: The bottom end of the backpack stove body (2) is uniformly provided with support legs (3), and the two ends of the backpack stove body (2) are uniformly provided with ventilation holes (1).

3. A backpack stove according to claim 2, characterized in that: The support legs (3) are provided in three sets, and the support legs (3) are symmetrically distributed about the backpack stove body (2).

4. A backpack stove according to claim 1, characterized in that: The gas pipeline (401) has a protective net (402) at one end near the blower body (405), and the protective net (402) is made of metal mesh.

5. A backpack stove according to claim 1, characterized in that: The top of the fixed frame (403) is provided with a fixed block (406), which is connected to the gas pipe (401) by a fixing bolt.

6. A backpack stove according to claim 1, characterized in that: The oxygen-enriched membrane (404) is made of polyethersulfone modified material.

7. A backpack stove according to claim 5, characterized in that: A handle (407) is provided at the top of the fixing block (406).

8. A backpack stove according to claim 1, characterized in that: The air inlet (408) is provided with an external thread (409) on the outside, and the air delivery pipe (401) is provided with a threaded groove that matches the external thread (409) inside.

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