Anti-overflow self-pressurization alcohol stove

Abstract

The anti-overflow self-pressurization alcohol stove comprises a fuel storage box, a stove head and an annular preheating disc, a first through hole is formed in the bottom face of the annular preheating disc, the stove head is fixedly installed on the first through hole, a spraying hole with an upward opening is formed in the surface of the stove head, the stove head is filled with a cotton core, and the cotton core is sleeved with non-woven fabric and a pure copper net. A second through hole is formed in the edge of the top of the fuel storage box, a blocking piece is detachably installed on the second through hole, and at least three supporting rod pieces are arranged on the periphery of the annular preheating disc. During use, firstly, alcohol is injected into the fuel storage box through the second through hole, standing is conducted for a period of time, then a small amount of alcohol is dropwise added to the surface of the furnace end, and ignition is conducted; in the process, alcohol sliding from the surface of the furnace end is limited to flow and remain in the annular preheating disc, combustion heat supply is concentrated, heat loss is small, increase of use cost is avoided, and the risk that a user is possibly burnt is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of alcohol stoves, in particular to an overflow-proof self-pressurized alcohol stove. Background Art

[0002] The self-pressurized alcohol stove is an alcohol stove with a pressurizing device. Its working principle is to heat alcohol through the heat generated by the combustion of alcohol, so that it vaporizes and generates pressure, thereby improving the combustion efficiency and heating speed of alcohol. For example, the Chinese patent with patent number CN218721710U includes an alcohol container and a drainage structure. The drainage structure is composed of a drainage tube made of high-temperature resistant material and a siphon material filler. The alcohol vapor ejected by the self-expansion and pressurization of the drainage tube itself is ignited by the air vent of the drainage tube itself. The heating itself causes the drainage tube to produce pressurized steam circulation to generate pressure for itself to complete self-pressurization. However, before use, a small amount of alcohol needs to be dripped on the drainage tube and ignited to preheat the alcohol in the drainage tube so that it is heated, evaporated, pressurized, and then ejected. However, when dripping alcohol, due to the fluidity of the alcohol liquid, when the alcohol flows down from the surface of the drainage tube, the heat loss generated by the combustion of the dripped alcohol when ignited is large, resulting in increased use costs, and the overflow and diffusion of alcohol means that the combustion range is also enlarged, causing a greater risk of burns to the user. Based on this, an anti-overflow self-pressurized alcohol stove is urgently needed in the art. Utility Model Content

[0003] To achieve the above objectives, the utility model is implemented through the following technical solutions: an anti-overflow self-pressurized alcohol stove, comprising a fuel storage box, a burner located at the top center of the fuel storage box, and an annular preheating plate surrounding the burner and with the bottom close to the top of the fuel storage box, the bottom surface of the annular preheating plate is provided with a first through hole connected to the interior of the fuel storage box, the burner is fixedly mounted on the first through hole, a spray hole opening upward is provided on the surface of the burner, the interior of the burner is filled with a cotton core extending to the bottom surface of the interior of the fuel storage box, the cotton core is outer-coated with non-woven fabric and pure copper mesh, a second through hole connected to the interior of the fuel storage box is provided at the top edge of the fuel storage box, a plugging piece is detachably mounted on the second through hole, and at least three supporting rods are provided around the annular preheating plate.

[0004] Preferably, two burners are arranged side by side, and the burners are circular curved copper tubes.

[0005] Preferably, the height of the furnace head top is greater than the depth of the annular preheating plate.

[0006] Preferably, a detachable annular windproof ring is provided inside the annular preheating plate, the outer diameter of the annular windproof ring is smaller than the inner diameter of the annular preheating plate, and the height of the annular windproof ring is greater than the height of the top of the furnace head.

[0007] Preferably, a ventilation groove is provided on the outer wall of one end of the annular windproof ring.

[0008] Preferably, the outer wall of the upper end of the annular preheating disk is provided with an external thread, and the annular preheating disk is detachably connected to a fire extinguishing cover used in conjunction with the external thread, and the sum of the height of the fire extinguishing cover and the height of the annular preheating disk is greater than the height of the annular windproof ring.

[0009] Preferably, the support rods are centrally symmetrically installed around the annular preheating plate.

[0010] Preferably, the support rod comprises a sleeve fixedly mounted on the top of the fuel storage box, a long rod movably mounted in the sleeve, and an inclined rod fixedly mounted on the top of the long rod, and a rotation limiting assembly is provided between the sleeve and the long rod.

[0011] Preferably, the rotation limit assembly includes a snap-in groove opened at the lower end of the long rod and an elastic clip fixedly installed on both sides of the inner wall of the sleeve and arranged relatively parallel. The snap-in groove is matched with the elastic clip and is provided with two, and is symmetrically opened on both sides of the long rod. The length of the snap-in groove is less than half the circumference of the cross section of the long rod.

[0012] Preferably, the extension direction of the snap-in groove and the extension direction of the inclined rod are located on the same plane, and the elastic clips are provided in two groups, wherein the extension direction of one group of elastic clips is parallel to the diameter direction of the annular preheating disk, which is the expansion group, and the extension direction of the other group of elastic clips is parallel to the tangent direction of the annular preheating disk, which is the storage group.

[0013] The utility model provides an anti-overflow self-pressurized alcohol stove, which has the following beneficial effects compared with the prior art:

[0014] The invention discloses an anti-overflow self-pressurized alcohol stove. When in use, a certain amount of alcohol solution is first injected into the fuel storage box through the second through hole, and then the alcohol solution is allowed to stand for a period of time until the cotton core in the burner is completely soaked with the alcohol solution. Then a small amount of alcohol solution is dripped onto the surface of the burner and ignited. Subsequently, a container to be heated, such as a kettle filled with water, is placed on a supporting rod, and the heating function of the self-pressurized alcohol stove can be used normally. During this process, the alcohol solution sliding down the surface of the burner is restricted from flowing and retained inside the annular preheating plate, that is, the dripped alcohol solution is blocked from overflowing and restricted to burning inside a small area of ​​the annular preheating plate, so that the burning alcohol solution provides heat more concentratedly, has high thermal sensing efficiency, and reduces heat loss, thereby avoiding an increase in use cost. In addition, the alcohol is blocked from overflowing, and the burning range is restricted to only near the top center of the fuel storage box, effectively reducing the risk of burns to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model without the annular windproof ring and the fire extinguishing cover;

[0016] Figure 2 It is the main view of the partial structure of the utility model in the open state;

[0017] Figure 3 It is a partially enlarged schematic diagram of the sleeve of the utility model in a top-down state after installation;

[0018] Figure 4 It is a schematic diagram of a partial structural perspective state of a single supporting rod of the utility model.

[0019] Description of reference numerals:

[0020] 1. Fuel storage box; 11. Second through hole; 12. Blocking piece; 2. Burner head; 21. Nozzle; 3. Annular preheating plate; 31. First through hole; 32. External thread; 4. Support rod; 41. Sleeve; 411. Elastic clip; 412. Expanding group; 413. Storage group; 42. Long rod; 421. Snap-in groove; 43. Slanting rod; 5. Annular windproof ring; 51. Ventilation groove; 6. Fire extinguishing cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides an overflow-proof self-pressurized alcohol stove, comprising a fuel storage box 1, a burner head 2 located at the top center of the fuel storage box 1, and an annular preheating plate 3 surrounding the burner head 2 and arranged with the bottom close to the top of the fuel storage box 1, the bottom surface of the annular preheating plate 3 is provided with a first through hole 31 connected to the inside of the fuel storage box 1, the burner head 2 is fixedly mounted on the first through hole 31, a spray hole 21 with an opening facing upward is opened on the surface of the burner head 2, the inside of the burner head 2 is filled with a cotton core (not shown in the figure) extending to the bottom surface of the inside of the fuel storage box 1, the cotton core jacket is provided with non-woven fabric and pure copper mesh (not shown in the figure), a second through hole 11 connected to the inside of the fuel storage box 1 is provided at the top edge of the fuel storage box 1, a plugging member 12 is detachably mounted on the second through hole 11, and at least three supporting rods 4 are arranged around the annular preheating plate 3.

[0023] When in use, first inject a certain amount of alcohol solution into the fuel storage box 1 through the second through hole 11, wait for a while to wait for the cotton core in the burner head 2 to be completely soaked with the alcohol solution, then drip a small amount of alcohol solution onto the surface of the burner head 2 and ignite it, then place the container to be heated, such as a kettle filled with water, on the support rod 4, and the heating function of the self-pressurized alcohol stove can be used normally. In this process, the alcohol solution sliding down the surface of the burner head 2 is restricted to flow and remain inside the annular preheating disk 3, that is, the dripped alcohol solution is blocked from overflowing and restricted to burn in a small area inside the annular preheating disk 3, so that the burning alcohol solution provides heat more concentratedly, has high thermal sensing efficiency, and reduces heat loss, thereby avoiding an increase in use cost, and the alcohol is blocked from overflowing and limits the combustion range to only near the top center of the fuel storage box 1, effectively reducing the risk of burns to the user.

[0024] It should be noted that, since the burner head 2 in the utility model is filled with a cotton core with excellent water absorption, which can quickly absorb alcohol, the waiting time after the alcohol solution is injected into the fuel storage box 1 is only a few seconds. Compared with the prior art using siphon materials, the waiting time before using the self-pressurized alcohol stove is reduced, and the use efficiency is improved. The fast adsorption speed of the cotton core can also ensure the continuous supply of alcohol during combustion. By arranging non-woven fabric and pure copper mesh wrapped around the cotton core, the cotton core can be shaped to facilitate uniform filling inside the burner head 2. The pure copper mesh has good thermal conductivity and can quickly transfer heat to make the alcohol burn more fully. At the same time, it can also reduce heat loss, extend the burning time, and increase firepower.

[0025] like Figure 1 and Figure 2 As shown, the utility model has two burner heads 2 arranged side by side, and the burner heads 2 are circular curved copper tubes. By arranging two burner heads 2, the combustion power can be increased, so that the heating surface of the bottom of the container to be heated mounted on the support rod 4 is larger, the heat conduction efficiency is improved, and the heating process is completed more quickly to achieve the expected goal.

[0026] like Figure 1 and Figure 2 As shown, the height of the top of the burner head 2 in the embodiment of the utility model is greater than the depth of the annular preheating plate 3, so that the spray hole 21 on the burner head 2 can timely contact with the oxygen in the air when continuously spraying alcohol vapor outward, avoiding the annular preheating plate 3 blocking the air circulation around the burner head 2 and affecting the alcohol combustion effect.

[0027] When the self-pressurized alcohol stove of the utility model is used outdoors, it is usually used in the case of outdoor wind. However, different outdoor wind strengths have different effects on the combustion of alcohol at the two burner heads. On the one hand, excessive wind strength can easily cause flame overflow and burn the user. On the other hand, different wind strengths can also affect the fire stability of the alcohol stove. In order to ensure the combustion stability of the alcohol stove, Figure 2 As shown, the annular preheating plate 3 in the embodiment of the utility model is provided with a detachable annular windproof ring 5, the outer diameter of which is smaller than the inner diameter of the annular preheating plate 3, and the height of which is greater than the height of the top of the burner head 2. When the outdoor wind is too strong, the user can use tweezers to clamp the annular windproof ring 5 inside the annular preheating plate 3 and surround the burner head 2 for protection. Since the outdoor wind is strong at this time and the air circulation effect near the burner head 2 is good, there is no need to worry about the problem of excessive air isolation of the annular windproof ring 5 affecting the firepower, and the most important thing to be prevented at this time is the safety issue. Therefore, the setting of the annular windproof ring 5 is practical in special use environments, and is easy to disassemble and assemble. It can be directly removed when not in use, and the assembly speed is fast and time-saving and labor-saving.

[0028] In order to make the annular windproof ring 5 also usable when the wind force of outdoor wind is medium, such as Figure 2 As shown, a ventilation groove 51 is provided on the outer wall of one end of the windproof ring. The user can determine the assembly direction of the annular windproof ring 5 according to the actual use environment. When the outdoor wind is strong, the end with the ventilation groove 51 can be assembled downward close to the top of the fuel storage box 1, so that the ventilation groove 51 is blocked by the annular preheating plate 3 to prevent wind from leaking. When the outdoor wind is moderate but the annular windproof ring 5 still needs to be used, the end with the ventilation groove 51 can be assembled upward away from the top of the fuel storage box 1, so that a small amount of ventilation is carried out near the stove head 2 through the ventilation groove 51 to ensure air circulation.

[0029] There are usually two ways to extinguish the self-pressurized alcohol stove after use. One is to continuously pour cold water on the surface of the burner head 2 to cool and condense the alcohol vapor inside until it is completely liquid, thereby blocking the supply of fuel. The other is to close the lid on the burner head 2 to isolate the burner head 2 from the surrounding air. When the oxygen in the lid is burned out, it will automatically extinguish. Usually, using the lid to extinguish is more common and efficient. Figure 2As shown, the outer wall of the upper end of the annular preheating disk 3 in the embodiment of the utility model is provided with an external thread 32, and the annular preheating disk 3 is detachably connected to a fire extinguishing cover 6 used in conjunction with the external thread 32, and the sum of the height of the fire extinguishing cover 6 and the height of the annular preheating disk 3 is greater than the height of the annular windproof ring 5. After use, the fire extinguishing cover 6 is directly covered on the annular preheating disk 3 to isolate the air to achieve the extinguishing effect, and the fire extinguishing cover 6 and the annular preheating disk 3 are threadedly connected, and the annular windproof ring 5 can be completely covered and shielded when the two are connected and fixed, so that the annular windproof ring 5 is fixedly stored therebetween, so that the annular windproof ring 5 is not easily lost when carried, and the fire extinguishing cover 6 also completely covers the burner head 2 to prevent alcohol from volatilizing to the outside through the spray hole 21 and increasing the cost of use.

[0030] like Figure 3 As shown, the support rods 4 in the embodiment of the utility model are centrally symmetrically installed around the annular preheating plate 3, so that the supporting effect on the container to be heated is more stable.

[0031] Furthermore, the support rod 4 includes a sleeve 41 fixedly mounted on the top of the fuel storage box 1, a long rod 42 movably mounted in the sleeve 41, and an inclined rod 43 fixedly mounted on the top of the long rod 42. A rotation limit assembly is provided between the sleeve 41 and the long rod 42, so that when the self-pressurized alcohol stove needs to be used, the inclined rod 43 can be rotated to open to a suitable angle, so that the inclined rod 43 extends outward and supports and stabilizes the container to be heated. When it is not needed, the inclined rod 43 is rotated inward to be stored, thereby reducing the overall storage volume of the self-pressurized alcohol stove, which is conducive to miniaturization of the product and is more convenient to carry.

[0032] Regarding the rotation limit assembly, specifically, the rotation limit assembly includes a clamping groove 421 opened at the lower end of the long rod 42 and an elastic clamp 411 fixedly installed on both sides of the inner wall of the sleeve and arranged relatively parallel. The clamping groove 421 is matched with the elastic clamp 411 and is provided with two, and is symmetrically opened on both sides of the long rod 42. The length of the clamping groove 421 is less than half the circumference of the cross section of the long rod 42. When the elastic clamp 411 and the clamping groove 421 are aligned and clamped, the long rod 42 and the sleeve 41 are in a relatively limited and fixed state, that is, the height position of the inclined rod 43 is fixed at this time and will not rotate axially without the influence of external force. When the inclined rod 43 needs to be rotated, the long rod 42 is manually rotated axially to make the elastic clamp 411 misaligned with the clamping groove 421. At this time, the elastic clamp 411 is deformed and fits tightly. When the inclined rod 43 is needed to be used, the long rod 42 is first rotated to make the inclined rod 43 located in a suitable extension direction, usually in a direction radially parallel to the annular preheating disk 3, and then the long rod 42 is pulled upward until the elastic clip 411 and the clamping groove 421 are located in the same cross section. Under the elastic resetting action of the elastic clip 411, the inclined rod 43 is automatically clamped in the clamping groove 421, and resistance is formed to the upward pulling operation. The deployment of the inclined rod 43 can be completed by releasing the hand.

[0033] Furthermore, since the elasticity of the elastic clip 411 will continue to be lost when it is in close contact with the surface of the long rod 42, in order to reduce its elastic loss, the extension direction of the clamping groove 421 in the embodiment of the utility model is located on the same plane as the extension direction of the inclined rod 43, and the elastic clip 411 is provided with two groups, one group of elastic clips 411 has an extension direction parallel to the diameter direction of the annular preheating disk 3, which is the expansion group 412, and the other group of elastic clips 411 has an extension direction parallel to the tangent direction of the annular preheating disk 3, which is the storage group 413, thereby providing guidance for the expansion and storage of the inclined rod 43 in different states, making the operation more convenient and quick, and the elastic clip 411 is in a reset and relaxed state under different static states of the corresponding inclined rod 43, avoiding excessive elastic loss and effectively extending the service life of the product.

[0034] In order to prevent the container to be heated from shaking and falling when heated on the self-pressurized alcohol stove of the utility model, causing the risk of scalding, the angle between the inclined rod 43 and the long rod 42 in the embodiment of the utility model is greater than 90 degrees, and at least three inclined rods 43 support the container to be heated relatively in the center to prevent it from falling easily due to slight shaking, thereby improving the safety of product use.

[0035] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-overflow self-pressurized alcohol stove, characterized in that: The invention comprises a fuel storage box (1), a burner (2) located at the center of the top of the fuel storage box (1), and an annular preheating plate (3) arranged around the burner (2) and with its bottom close to the top of the fuel storage box (1); the bottom surface of the annular preheating plate (3) is provided with a first through hole (31) connected to the inside of the fuel storage box (1); the burner (2) is fixedly mounted on the first through hole (31); a spray hole (21) with an opening facing upward is opened on the surface of the burner (2); the inside of the burner (2) is filled with a cotton core extending to the bottom surface of the inside of the fuel storage box (1); the outer cover of the cotton core is provided with non-woven fabric and pure copper mesh; a second through hole (11) connected to the inside of the fuel storage box (1) is provided at the top edge of the fuel storage box (1); a plugging member (12) is detachably mounted on the second through hole (11); and at least three supporting rods (4) are arranged around the annular preheating plate (3).

2. The anti-overflow self-pressurized alcohol stove according to claim 1, characterized in that: Two of the burner heads (2) are arranged side by side, and the burner heads (2) are circular curved copper tubes.

3. The anti-overflow self-pressurized alcohol stove according to claim 2, characterized in that: The height of the top of the furnace head (2) is greater than the depth of the annular preheating plate (3).

4. The overflow-proof self-pressurized alcohol stove according to claim 3, characterized in that: A detachable annular windproof ring (5) is provided inside the annular preheating plate (3); the outer diameter of the annular windproof ring (5) is smaller than the inner diameter of the annular preheating plate (3); and the height of the annular windproof ring (5) is greater than the height of the top of the furnace head (2).

5. The overflow-proof self-pressurized alcohol stove according to claim 4, characterized in that: A ventilation slot (51) is formed on the outer wall of one end of the annular windproof ring (5).

6. The anti-overflow self-pressurized alcohol stove according to claim 4, characterized in that: The outer wall of the upper end of the annular preheating disk (3) is provided with an external thread (32), and the annular preheating disk (3) is detachably connected to a fire extinguishing cover (6) used in conjunction with the external thread (32), and the sum of the height of the fire extinguishing cover (6) and the height of the annular preheating disk (3) is greater than the height of the annular windproof ring (5).

7. The overflow-proof self-pressurized alcohol stove according to claim 1, characterized in that: The support rods (4) are centrally symmetrically mounted around the annular preheating plate (3).

8. The overflow-proof self-pressurizing alcohol stove according to claim 7, characterized in that: The support rod (4) comprises a sleeve (41) fixedly mounted on the top of the fuel storage box (1), a long rod (42) movably mounted in the sleeve (41), and an inclined rod (43) fixedly mounted on the top of the long rod (42); a rotation limiting assembly is provided between the sleeve (41) and the long rod (42).

9. The overflow-proof self-pressurized alcohol stove according to claim 8, characterized in that: The rotation limiting assembly comprises a clamping groove (421) provided at the lower end of the long rod (42) and elastic clamps (411) fixedly mounted on both sides of the inner wall of the sleeve and arranged relatively parallel to each other. The clamping grooves (421) are provided with two elastic clamps (411) and are symmetrically provided on both sides of the long rod (42). The length of the clamping grooves (421) is less than half the circumference of the cross section of the long rod (42).

10. The overflow-proof self-pressurized alcohol stove according to claim 9, characterized in that: The elastic clamps (411) are provided in two groups, wherein the extension direction of one group of elastic clamps (411) is parallel to the diameter direction of the annular preheating disk (3), which is the expansion group (412), and the extension direction of the other group of elastic clamps (411) is parallel to the tangent direction of the annular preheating disk (3), which is the storage group (413).

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