Portable alcohol burner

Abstract

The utility model relates to the technical field of stove, disclose a kind of portable alcohol stove, including liquid storage tank, gasification pipe, furnace core subassembly, valve core, cover and support frame, support frame includes multiple stand, support plate and multiple sub-support, each stand one end is installed on liquid storage tank, other end is connected with support plate, each sub-support is evenly distributed along the circumferential direction of cover, each sub-support is evenly included integrally formed support body and adjusting assembly, support body is slidably installed on support plate by adjusting assembly, to adjust the position of sub-support in the radial direction of cover, and then adjust the distance between each sub-support and gasification pipe. The utility model is provided with multiple sub-supports on support frame, which can adjust the distance from the center gasification pipe in the radial direction, allowing users to flexibly adjust the support points according to the size of the pot bottom diameter, greatly improving the compatibility of the stove for different sizes and shapes of pots.

Description

Technical Field

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

[0002] Currently, portable alcohol stoves on the market typically include a liquid storage tank, a vaporization tube, a burner core assembly, and a support frame for supporting cookware. Among these, the support frame, as a key component for supporting cookware, directly affects the alcohol stove's adaptability to cookware of different sizes.

[0003] However, most existing portable alcohol stoves have fixed support frames, meaning the distance between each support point and the center of the stove core assembly is constant. This fixed support frame has significant limitations in practical use: when using smaller diameter pots or kettles, the large spacing between support points makes it difficult to place the pots stably, leading to wobbling or even tipping over, affecting heating efficiency and posing safety hazards; conversely, when using larger diameter cooking pots, the small spacing between support points prevents the pots from resting stably on the support, leaving parts of the pot suspended in the air. This results in uneven heating and could potentially cause accidents due to uneven stress.

[0004] The prior art, Chinese Patent Publication No. CN223090715U, discloses a pressurized, windproof, high-fire alcohol stove, which solves the problem of the aforementioned fixed support frame. The support base plate in this patent is provided with an openable and closable extendable support; when the extendable support is in the retracted state, the support base plate is used to support the appliance; when the extendable support is in the extended state, the extendable support is used to occupy part of the space of the clearance hole to support the appliance.

[0005] The aforementioned existing technology still has the following drawbacks: the adjustment method of the support frame relies on rotation to open and close. When the extension support is under stress, this rotating connection structure is prone to shaking due to the instability of the stress point, resulting in unstable placement of the pot and affecting the safety of the heating process; when the pot bottom is too large, the stress point of the pot will be far away from the first end of the extension support and the support base plate, so that the second end of the extension support needs to bear a large torque. Under long-term or repeated use, the second end of the sub-support is prone to deformation or even breakage due to the concentrated force, which seriously reduces the service life and reliability of the alcohol stove. Utility Model Content

[0006] The present invention aims to provide a portable alcohol stove to improve the stove's compatibility with cookware of different sizes and shapes, and to enhance the stove's support for cookware.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A portable alcohol stove includes a storage tank, a vaporization pipe and a furnace core assembly connected to each other above the storage tank, a flow control valve on the furnace core assembly, and a cover around the outer periphery of the furnace core assembly. A support frame is mounted on the outer periphery of the cover, and the support frame includes multiple columns, a support plate and multiple sub-supports. One end of each column is mounted on the storage tank and the other end is connected to the support plate. Each sub-support is evenly distributed along the circumferential direction of the cover. Each sub-support includes an integrally formed support body and an adjustment component. The support body is slidably mounted on the support plate through the adjustment component to adjust the position of the sub-support in the radial direction of the cover, thereby adjusting the distance between each sub-support and the vaporization pipe.

[0009] Beneficial effects:

[0010] 1. By setting multiple sub-supports on the support frame that can be radially adjusted in distance from the central vaporization tube, users can flexibly adjust the support point, i.e. the position of the end of the sub-support, according to the size of the bottom diameter of the pot. Whether it is a small water cup or a large cooking pot, it can be placed stably on it for heating, which greatly improves the compatibility of the stove with pots of different sizes and shapes.

[0011] 2. Each sub-support is evenly installed on the support plate along the circumferential direction of the cover, providing multiple evenly distributed support points for the cookware, which significantly improves the stability of the cookware and effectively prevents the cookware from tilting, slipping or even overturning during cooking due to external forces or uneven ground, thus enhancing the safety of use.

[0012] 3. The entire stove boasts a compact structure, integrating the liquid storage tank, vaporization pipe, burner core assembly, hood, and support frame. The modular design of the support frame allows the entire stove to be disassembled into individual parts when not in use, facilitating storage and portability, making it ideal for outdoor camping, hiking, picnics, and similar activities. Simultaneously, the support frame's uprights and support plate structure provide the necessary strength and rigidity to stably support the weight of the cookware and its contents, ensuring reliable operation.

[0013] Preferably, as a further improvement, the adjusting component includes a sliding part, and a first opening is formed on the support plate, the sliding part being slidably connected within the first opening.

[0014] Beneficial effects: The tight engagement between the sliding part and the first opening, combined with the fixing of the fastening part in the second opening, significantly enhances the sub-support's ability to resist torsion and lateral forces when bearing cookware.

[0015] Preferably, as a further improvement, the support plate is also provided with a second opening, which is arranged parallel to the first opening; the adjustment component also includes a fastening part, which is fixedly connected to the second opening by a fastener.

[0016] Beneficial effects: This support frame design, through the parallel first and second openings on the support plate, combined with sliding and fastening parts, achieves a dual improvement in both ease of adjustment and structural stability. Specifically, the fastening part is fixed to the second opening to provide the main support positioning, while the sliding part precisely engages within the parallel first opening, forming a double constraint. This ensures that the sub-support slides smoothly and strictly along the direction parallel to the opening during radial adjustment, avoiding offset or wobbling during adjustment.

[0017] Preferably, as a further improvement, the side of the support body away from the fastening part is formed with anti-slip teeth.

[0018] Beneficial effects: When the cookware is placed on the support body, the anti-slip teeth tightly engage with the bottom of the cookware, creating a multi-point localized embedding effect. This effectively prevents the cookware from sliding horizontally or rotating during cooking due to external forces, avoiding the risk of food spillage or the stove tipping over. Secondly, the sharp edges of the anti-slip teeth can pierce any liquid film or oil layer that may be present on the bottom of the cookware, eliminating the risk of slippage caused by liquid lubrication. The toothed structure also disperses the pressure of the cookware, reducing the pressure on the surface of the support body and preventing metal adhesion that may occur at high temperatures.

[0019] Preferably, as a further improvement, the cover is provided with a slot, and the support body is slidably connected in the slot.

[0020] Beneficial effects: The slot provides a clear trajectory constraint for the sliding of the support body, which can limit the lateral or longitudinal displacement of the support body during the sliding process, avoid problems such as jamming and misalignment caused by deviation of the sliding direction, and ensure that the support body moves smoothly along the preset path.

[0021] Preferably, as a further improvement, the column includes a detachably connected connecting column and a sleeve, the connecting column being fixedly connected to the support plate, and the threaded sleeve being fixedly connected to the liquid storage tank.

[0022] Beneficial effects: The detachable design of the connecting column and sleeve allows the column to be disassembled into independent small parts. Combined with the separation or folding of the liquid storage tank and support plate, the storage volume is significantly reduced, making it easy to pack into backpacks, tote bags, etc., and it is especially suitable for outdoor camping, picnics and other scenarios. Moreover, no tools are required for assembly. It can be quickly connected and fixed by simple operations such as screwing on the threads, shortening the preparation time before use.

[0023] Preferably, as a further improvement, the upper surface of the storage tank is also provided with a pressure gauge and an injection hole, which are arranged opposite to each other.

[0024] Beneficial effects: The pressure gauge allows for direct and clear observation of pressure changes. Users can monitor the internal pressure of the storage tank in real time without frequent relocation or adjustment of the viewing angle. The injection port allows users to easily determine whether to add air to the tank to increase the internal pressure based on the pressure gauge reading. Furthermore, the relative placement of the pressure gauge and injection port prevents localized pressure buildup during air injection when the gauge and port are close together, thus avoiding interference with judgment.

[0025] Preferably, as a further improvement, an observation port is provided on the side of the storage tank, and an observation element is installed inside the observation port.

[0026] Beneficial effect: The observation port design allows users to easily check the remaining amount of liquid in the storage tank. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0028] Figure 2 This is a schematic diagram of the sub-support structure in this example.

[0029] Figure 3 This is a schematic diagram of the spiral column structure in this example.

[0030] Figure 4 for Figure 1 Top view.

[0031] Figure 5 This is a cross-sectional view of an embodiment of the present utility model.

[0032] Figure 6 This is a schematic diagram of the valve core in an embodiment of this utility model.

[0033] Figure 7 for Figure 6 A sectional view.

[0034] Figure 8 for Figure 8 A magnified view of a portion of the image.

[0035] The reference numerals in the accompanying drawings include: liquid storage tank 1, pressure gauge 11, injection hole 12, sealing end cap 13, support rod 14, support foot 15, conduit 16, boss 17, protrusion 18, gasification pipe 2, furnace core assembly 3, valve body 31, first channel 311, second channel 312, furnace nozzle 32, slot 321, third channel 322, preheating plate 323, connecting nozzle 33, valve core 4, plug-in part 41, operating part 42, cover 5, ventilation hole 51, support frame 6, column 61, threaded column 611, shell, support plate 62, mounting port 621, first opening 622, second opening 623, sub-support 63, support body 631, fastening part 632, sliding part 633. Detailed Implementation

[0036] The following detailed description illustrates the specific implementation method:

[0037] Example

[0038] like Figures 1-8 As shown, this embodiment provides a portable alcohol stove, including a storage tank 1 for holding liquid alcohol. To facilitate user monitoring of the tank's contents, a pressure gauge 11 and an injection hole 12 are provided on the upper surface of the storage tank 1. The pressure gauge 11 and the injection hole 12 are positioned opposite each other. A sealing cap is installed on the injection hole 12, with an air vent in the center of the cap. A sealing valve is installed inside the air vent to seal it. In this embodiment, the tank is pressurized by an air gun, and the pressure gauge 11 allows the user to more intuitively understand the pressure inside the tank and determine whether to add air to increase the pressure. Furthermore, an observation port is provided on the side of the storage tank 1, with a transparent sealing end cap 13 installed inside. Through the sealing end cap 13, the user can clearly see the remaining amount of alcohol in the tank without opening it, facilitating timely refueling. To increase the support strength of the storage tank 1, a support rod 14 is provided in the middle of the tank. Multiple support feet 15 are provided at the bottom of the storage tank 1.

[0039] like Figure 1 and Figure 4 As shown, a vaporization pipe 2 and a furnace core assembly 3 are interconnected above the storage tank 1, forming a crucial transmission and conversion channel for alcohol from liquid to combustion. One end of the vaporization pipe 2 is inserted into the storage tank 1 through a conduit 16 located on the surface of the storage tank 1, and a notch is formed at the bottom of the vaporization pipe 2 to allow alcohol to enter through the notch. Notably, the vaporization pipe 2 located above the furnace core assembly 3 is designed in a spiral shape, which greatly increases the surface area of ​​the pipe, facilitating the full heating and vaporization of alcohol within the pipe. Simultaneously, a heating strip is embedded inside the vaporization pipe 2. Both the heating strip and the vaporization pipe 2 are made of metal. The iron wire has good heat resistance and thermal conductivity, enabling rapid heat transfer to assist the alcohol in completing the vaporization process and prepare for subsequent full combustion.

[0040] like Figure 7 and Figure 8 As shown, the furnace core assembly 3 includes an integrally formed valve body 31 and a nozzle 32 connected to one end of the valve body 31. The bottom end of the nozzle 32 is connected to the liquid storage tank 1. Specifically, the liquid storage tank 1 extends upward to form a boss 17. The inner circumference of the boss 17 matches the outer circumference of the nozzle 32. The middle part of the boss 17 protrudes upward to form a protrusion 18. The middle part of the bottom end of the nozzle 32 is recessed inward to form a groove 321. When the nozzle 32 is installed on the liquid storage tank 1, the protrusion 18 is engaged in the groove 321. The valve body 31 has a first channel 311 and a second channel 312 that are interconnected inside. The outer end of the first channel 311 is welded to one end of the connecting nozzle 33. The port of the vaporization pipe 2 is inserted into the connecting nozzle 33, and the first channel 311 is connected to the vaporization pipe 2 to receive the vaporized alcohol delivered from the vaporization pipe 2. The second channel 312 is connected to the third channel 322 in the burner nozzle 32 to deliver the vaporized alcohol to the burner nozzle 32 for combustion.

[0041] like Figure 6 and Figure 7 As shown, to precisely control the combustion flame, a valve core 4 is installed inside the valve body 31. The valve core 4 includes a plug-in part 41 and an operating part 42. The plug-in part 41 is inserted into the second channel 312, and the operating part 42 is located outside the valve body 31. The operating part 42 is specifically a handle, while the plug-in part 41 is a conical rod with its diameter gradually decreasing along the axial direction. By pulling the handle, the user can move the plug-in part 41 within the second channel 312. During the movement, the end of the plug-in part 41 is always located between the first channel 311 and the third channel 322, thereby adjusting the opening and closing degree of the second channel 312 to control the alcohol flow rate and thus change the flame size. It is worth noting that in this embodiment, a sealing ring is also provided between the plug-in part 41 and the second channel 312, and this sealing ring is fitted around the outer periphery of the plug-in part 41.

[0042] In addition, such as Figure 6 As shown, a preheating plate 323 is also provided on the outer periphery of the burner nozzle 32 for storing alcohol so that the alcohol can be ignited and preheated to the vaporization tube 2.

[0043] like Figure 5 As shown, a cover 5 is provided around the outer periphery of the furnace core assembly 3. The cover 5 can block the interference of external airflow on the flame, while concentrating heat to improve heating efficiency. A vent is provided at the bottom of the cover 5, which can continuously introduce fresh air into the furnace for combustion, replenish oxygen, and ensure that the alcohol can burn completely.

[0044] like Figure 2 and Figure 3As shown, a support frame 6 is mounted on the outer periphery of the cover 5 for placing heating containers such as pots. The support frame 6 consists of four columns 61, a support plate 62, and four sub-supports 63. One end of each column 61 is mounted on the liquid storage tank 1, and the other end is connected to the support plate 63. Specifically, each column 61 includes a detachably connected connecting column 611 and a sleeve 612. The connecting column 611 is bolted and fixedly connected to the support plate 62. The sleeve 612 is fixedly connected to the liquid storage tank. The inner circumference of the sleeve 612 is threaded. During installation, the threaded column 611 is threadedly connected to the sleeve 612. A shell is also fitted around the outer circumference of the threaded column 611, and the outer diameter of the shell is the same as the outer diameter of the sleeve. An installation port 621 is provided at the center of the support plate 62. The cover 5 is installed in the installation port 621 to facilitate the upward output of the flame from the furnace core assembly 3 for heating the pots. Each sub-support 63 is evenly distributed along the circumferential direction of the cover 5, and each sub-support 63 includes an integrally formed support body 631 and an adjustment component. The support body 631 is slidably mounted on the support plate 62 through the adjustment component to adjust the position of the sub-support 63 in the radial direction of the cover 5, thereby adjusting the distance between each sub-support 63 and the vaporization pipe 2 to adapt to cookware of different sizes. Specifically, the support plate 62 has a first opening 622 and a second opening 623 arranged in parallel. The adjustment component includes a sliding part 633 and a fastening part 632. Both the sliding part 633 and the fastening part 632 are located below the support body 631 and are distributed along the length direction of the support body 631. Both the sliding part 633 and the fastening part 632 are slidably connected to the support plate 62. The fastening part 632 is located in the middle of the support body 631 and is L-shaped with the support body 631. The sub-support 632 is mounted on the second opening 623 by bolts and nuts. A sliding part 633 protrudes downwards from the side near the support body 631, and is engaged within the first opening 622. This structural design simplifies the adjustment of the sub-support 63. When the position of the sub-support 63 needs adjustment, the sliding part 633 can slide along the first opening 622, causing the fastening part 632 to move synchronously within the second opening 623, thereby easily changing the radial distance between the sub-support 63 and the vaporization pipe 2. Furthermore, anti-slip teeth are formed on the side of the support body 631 away from the fastening part 632. These teeth increase friction with the bottom of the cookware, preventing the cookware from sliding during heating and improving safety.

[0045] The process of using this utility model:

[0046] 1. Checking and Adding Fuel: Check the remaining alcohol level inside the reservoir 1 through the observation port on the side. If the level is insufficient, add liquid alcohol through the injection hole 12 on the upper surface. When adding, be careful not to exceed the safe capacity of the reservoir 1. After adding, tighten the cap of the injection hole 12. At the same time, observe the pressure gauge 11 to ensure that the pressure inside the reservoir 1 is within the normal range, preparing for subsequent use.

[0047] 2. Adjusting the support frame 6: Adjust the sub-supports 63 of the support frame 6 according to the size of the cookware to be heated. By pushing the sliding part 633 at the bottom of the fastening part 632 of the sub-support 63, it slides along the first opening 622 on the support plate 62, causing the fastening part 632 to move within the second opening 623, thereby changing the radial distance between each sub-support 63 and the vaporization pipe 2 until it can stably support the cookware. After adjustment, ensure that the anti-slip teeth of the support body 631 are in close contact with the bottom of the cookware to prevent the cookware from sliding.

[0048] 3. Preparations before ignition: Confirm that the valve core 4 on the furnace core assembly 3 is in the closed state, that is, fully insert the plug part 41 into the second channel 312 through the operating part 42 to block the flow of alcohol. Then, place the pot steadily on the support frame 6, ensuring that the bottom of the pot is aligned with the top of the cover 5 to fully receive heat.

[0049] 4. Ignition and flame adjustment: Open valve core 4, and pull the plug part 41 outward through operating part 42 to open the second channel 312, allowing the vaporized alcohol to be discharged through the burner nozzle 32. At this time, ignite the burner nozzle 32 with the ignition device, and the alcohol stored in the preheating plate 323 will immediately burn, thereby heating the vaporization tube 2 and assisting the alcohol to vaporize more quickly. According to the heating requirements, adjust the position of the plug part 41 in the second channel 312 by adjusting the operating part 42 of valve core 4, thereby controlling the alcohol flow and adjusting the flame size. At the same time, fresh air will be introduced through the vent at the bottom of the cover 5 to ensure complete combustion of alcohol.

[0050] 5. Post-use instructions: First, shut off the alcohol flow via valve core 4. After the flame at burner nozzle 32 has completely extinguished, remove the pot from support frame 6. Allow the alcohol stove to cool completely before adding more alcohol or storing it away as needed.

[0051] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A portable alcohol stove, characterized in that: The furnace includes a liquid storage tank, which is connected to the furnace core assembly via a vaporization pipe. The furnace core assembly is equipped with a valve core for controlling the flow rate. A cover and a support frame are sequentially installed around the outer periphery of the furnace core assembly. The support frame includes multiple columns, a support plate, and multiple sub-supports. One end of each column is installed on the liquid storage tank, and the other end is connected to the support plate. Each sub-support is evenly distributed along the circumferential direction of the cover. Each sub-support includes an integrally formed support body and an adjustment component. The support body is slidably mounted on the support plate through the adjustment component to adjust the position of the sub-support in the radial direction of the cover, thereby adjusting the distance between each sub-support and the vaporization pipe.

2. The portable alcohol stove according to claim 1, characterized in that: The adjustment component includes a sliding part, and a first opening is formed on the support plate, with the sliding part slidably connected within the first opening.

3. The portable alcohol stove according to claim 2, characterized in that: The support plate is also provided with a second opening, which is parallel to the first opening; the adjustment component also includes a fastening part, which is fixedly connected to the second opening by a fastener.

4. The portable alcohol stove according to claim 3, characterized in that: Anti-slip teeth are formed on the side of the support body away from the sliding part.

5. The portable alcohol stove according to claim 1, characterized in that: The cover has a slot, and the support body is slidably connected in the slot.

6. The portable alcohol stove according to claim 1, characterized in that: The column includes a detachably connected connecting column and a sleeve. The connecting column is fixedly connected to the support plate, and the sleeve is fixedly connected to the liquid storage tank.

7. The portable alcohol stove according to claim 1, characterized in that: The upper surface of the storage tank is also equipped with a pressure gauge and an injection port, which are arranged opposite each other.

8. The portable alcohol stove according to claim 1, characterized in that: An observation port is also provided on the side of the liquid storage tank, and an observation device is installed inside the observation port.

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