A charcoal stove

Abstract

The utility model relates to burner technical field especially relates to a charcoal stove. The charcoal stove includes the furnace body, and it is the open one end and has the accommodating cavity's cylindrical structure, is equipped with inner cylinder and grate in the furnace body, and the lower part is provided with the ventilation opening, and the heat preservation subassembly is installed between the inner cylinder and the furnace body, and the circular ring furnace ring is installed on the heat preservation subassembly and the inner cylinder, wherein, the inner cylinder is the hollow cylindrical structure of both ends open, the ratio of the lower end opening diameter of the inner cylinder and the upper end opening diameter of the inner cylinder is 1.2 1.5, and the ratio of the height of the inner cylinder and the difference of the upper and lower end opening diameter of the inner cylinder is 2.5 7.5, the inner circle of circular ring furnace ring is aligned with the upper end opening of the inner cylinder, and the furnace ring is equipped with the convex edge. The utility model discloses the charcoal stove is favorable to the heat concentration in the heating piece place, also is favorable to the circulation flow of inside and outside air, makes fuel be able to burn under the suitable combustion condition, improves the efficiency of combustion.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a charcoal stove. Background Technology

[0002] Charcoal stoves, as an ancient heating tool, are widely used to heat water or food. A typical charcoal stove structure generally includes a cylindrical body containing fuel such as charcoal or firewood for combustion, with a kettle or pot placed on top for different purposes, such as boiling water or cooking food.

[0003] In some heating applications, rapid and high-temperature heating is often required. For example, in cooking, high-temperature heating can quickly cook food thoroughly while preserving its original flavor. In tea brewing, using boiling water to quickly steep tea leaves can fully release the aroma and enhance the richness of the tea soup. Therefore, the charcoal stove needs to have a high internal temperature and the ability to heat up rapidly to quickly bring the water to a boil.

[0004] The heat generation and transfer principle of a charcoal stove mainly includes two processes: combustion and heat conduction. Combustion refers to the process by which fuel burns and releases heat. The heat generated by combustion is transferred to the heated components through conduction, radiation, and convection. Most existing charcoal stoves are single-layer structures with poor insulation, and some heat is lost through radiation or convection. In addition, incomplete combustion of fuel in existing charcoal stoves leads to low thermal efficiency, making it difficult to achieve high heating temperatures and rapid temperature rise. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to provide a charcoal stove that improves the heat preservation effect and combustion efficiency of the charcoal stove, increases the temperature inside the stove, and achieves rapid heating during the heating process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: Technical Solution 1: A charcoal stove, comprising: The furnace body is a cylindrical structure with an opening at one end and a cavity for receiving the contents, and a ventilation opening is provided at the bottom of the furnace body. The inner cylinder is installed inside the furnace body. The inner cylinder is a hollow cylindrical structure with openings at both ends. The ratio of the diameter of the lower opening of the inner cylinder to the diameter of the upper opening of the inner cylinder is 1.2-1.5, and the ratio of the height of the inner cylinder to the difference between the diameters of the upper and lower openings of the inner cylinder is 2.5-7.5. A heat insulation component is installed between the inner cylinder and the furnace body; A grate, installed inside the furnace body, is located above the ventilation opening and is used to support the insulation components and the inner cylinder. A furnace ring is installed on the insulation component and the inner cylinder. The furnace ring is circular, and the inner ring of the circular furnace ring is aligned with the upper opening of the inner cylinder. The furnace ring is provided with raised ridges.

[0007] Technical Solution 2: According to the charcoal stove described in Technical Solution 1, the diameter of the upper opening of the inner cylinder is 8-10cm, the diameter of the lower opening of the inner cylinder is 10-12cm, and the height of the inner cylinder is 10-15cm.

[0008] Technical Solution 3: In the charcoal furnace described in Technical Solution 1 or 2, the inner wall of the annular furnace ring is a conical surface with a diameter that gradually decreases from top to bottom.

[0009] Technical Solution 4: In the charcoal stove according to any one of Technical Solutions 1-3, the number of protruding ridges is 3-5, and the height of the protruding ridges is 0.5-2cm.

[0010] Technical Solution 5: The charcoal furnace according to any one of Technical Solutions 1-4, wherein a boss is provided inside the furnace body for supporting the grate.

[0011] Technical Solution 6: The charcoal stove according to any one of technical solutions 1-5 further includes a stove cover, the stove cover having a groove corresponding to the shape and size of the protruding ridge for accommodating the protruding ridge.

[0012] Technical Solution 7: According to the charcoal stove described in Technical Solution 6, the stove cover includes a cover body, a support part, and a handle connected in sequence, wherein the support part has a groove corresponding to the shape and size of the protruding ridge, and the cover body, the support part, and the handle are integrally formed.

[0013] Technical Solution 8: In the charcoal stove according to any one of Technical Solutions 1-7, a heat insulation ring is further installed between the inner cylinder and the heat insulation component and the furnace ring.

[0014] Technical Solution 9: The charcoal stove according to any one of technical solutions 1-8 further includes a vent plug corresponding to the shape and size of the vent, wherein the area of ​​the vent is 18-22 square centimeters.

[0015] Technical Solution 10: The charcoal stove according to any one of technical solutions 1-9, wherein the grate is a grid-shaped grate, and the air inlet area of ​​the grate is 40-50 square centimeters. Beneficial effects

[0016] This invention incorporates an inner cylinder within the furnace body, designed in a specific frustum shape. This design facilitates heat concentration at the heated components. Furthermore, during fuel combustion, the released heat heats the air within the inner cylinder. The hot air, being less dense, rises, reducing the air pressure within the inner cylinder. External cold air is continuously drawn into the inner cylinder through the vents due to the pressure difference, creating a circulating flow that allows the fuel to burn under suitable conditions, thus improving combustion efficiency. Additionally, an insulation layer between the furnace body and the inner cylinder prevents further heat loss and lowers the temperature of the furnace exterior, preventing burns. Therefore, this design increases the heating temperature of the charcoal furnace, enabling rapid temperature rise during the heating process. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the charcoal stove provided in Example 1.

[0018] Figure 2 This is a schematic diagram of the front view of the charcoal stove provided in Example 1; Figure 3 This is a schematic diagram of the furnace ring in the charcoal furnace provided in Example 2; Figure 4 This is a schematic diagram of the main view of the furnace cover in the charcoal furnace provided in Example 2; Figure 5 This is a schematic diagram of the left side of the furnace cover in the charcoal furnace provided in Example 2; Figure 6 This is a schematic diagram of the rear view of the furnace cover in the charcoal furnace provided in Example 2; Figure 7 A schematic diagram of the air vent plug in the charcoal furnace is provided for Example 2.

[0019] The annotations in the attached figures are explained as follows: 1-Furnace body, 11-Ventilation opening, 12-Boss, 2-Inner cylinder, 21-Upper opening of inner cylinder, 22-Lower opening of inner cylinder, 3-Insulation component, 4-Grate, 5-Furnace ring, 51-Protruding ridge, 52-Wall surface of inner ring of furnace ring, 6-Furnace cover, 61-Groove, 62-Support, 63-Cover, 64-Handle, 7-Air vent plug. Detailed Implementation

[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0021] On the one hand, in one specific embodiment of this application, a charcoal stove is provided to solve the problems of poor heat preservation, low thermal efficiency, difficulty in achieving high heating temperatures, and difficulty in achieving rapid heating in the prior art. The charcoal stove will be described below with reference to the accompanying drawings. Specific Implementation

[0022] The charcoal stove provided in this application embodiment is exemplary; please refer to [link to relevant documentation]. Figure 1-7 As shown, a charcoal stove includes a stove body 1, which is a cylindrical structure with one end open and a cavity for receiving the contents. A ventilation opening 11 is provided at the bottom of the stove body. Inner cylinder 2, which is installed inside furnace body 1, is a hollow cylindrical structure with openings at both ends. The ratio of the diameter of the lower opening 22 to the diameter of the upper opening 21 of the inner cylinder is 1.2-1.5, and the ratio of the height of the inner cylinder to the difference between the diameters of the upper and lower openings of the inner cylinder is 2.5-7.5. The heat insulation component 3 is installed between the inner cylinder 2 and the furnace body 1; The grate 4 is installed inside the furnace body 1, located above the ventilation opening 11, and is used to support the insulation component 3 and the inner cylinder 2.

[0023] The furnace ring 5 is installed on the insulation component 3 and the inner cylinder 2. The furnace ring 5 is circular, and the inner ring of the circular furnace ring is aligned with the upper opening of the inner cylinder. The furnace ring 5 is provided with a protruding rib 51.

[0024] During heating, charcoal is added into the inner cylinder, supported by the grate. Air enters the inner cylinder through the vent and the grate, igniting the charcoal. A kettle filled with water is placed on the furnace ring for heating.

[0025] It should be noted that the difference between the opening diameters at the upper and lower ends of the inner cylinder refers to the difference between the opening diameter at the lower end of the inner cylinder and the opening diameter at the upper end of the inner cylinder.

[0026] This invention designs the inner cylinder in a specific frustum shape, which not only facilitates heat concentration at the heated components but also promotes the circulation of internal and external air, enabling fuel to burn under suitable conditions and improving combustion efficiency. If the ratio of the lower opening diameter to the upper opening diameter of the inner cylinder is too large, or the ratio of the height of the inner cylinder to the difference in diameter between the upper and lower openings is too small, the flue gas flow path will be longer, resulting in uneven flue gas velocity distribution within the furnace. This may increase flue gas flow resistance and reduce combustion efficiency due to localized eddies. Conversely, if the ratio of the lower opening diameter to the upper opening diameter of the inner cylinder is too small, or the ratio of the height of the inner cylinder to the difference in diameter between the upper and lower openings is too large, the air circulation may be ineffective, preventing complete fuel combustion.

[0027] In this embodiment, the diameter of the upper opening of the inner cylinder is 8-10cm, the diameter of the lower opening of the inner cylinder is 10-12cm, and the height of the inner cylinder is 10-15cm.

[0028] In some embodiments of this example, the ratio of the diameter of the lower opening 22 of the inner cylinder to the diameter of the upper opening 21 of the inner cylinder is 1.2-1.3, and the ratio of the height of the inner cylinder to the difference between the diameters of the upper and lower openings of the inner cylinder is 3.5-5.5.

[0029] In this embodiment, the inner wall 52 of the annular furnace ring is a conical surface with a diameter that gradually decreases from top to bottom. Furthermore, the furnace ring has several raised ridges 51, for example, 3-5, specifically 3, 4, or 5. The height of the raised ridges is 0.5-2 cm. This design ensures complete combustion while fully utilizing the heat released during combustion, improving the thermal efficiency of the charcoal stove; it also prevents flame overflow from damaging the kettle handle due to the distance between the heated components and the inner cylinder.

[0030] In this embodiment, a boss 12 is provided inside the furnace body to support the grate 4.

[0031] It is understood that the protrusion can be multiple rectangular columns, such as 3-6; or it can be an annular shape, set on the inner wall of the furnace body.

[0032] In this embodiment, the charcoal stove further includes a stove cover 6, which has a groove 61 that matches the size and shape of the protruding ridge 51. Further, the stove cover 6 includes a cover body 63, a support portion 62, and a handle 64 connected in sequence. The support portion 62 has a groove 61 that matches the protruding ridge, and a circular groove is formed in the center of the support portion. The handle is installed in the groove. The cover body, the support portion, and the handle are integrally formed. Through the above design, the stove fire can be kept burning for a long time and can be quickly reignited upon reuse.

[0033] In this embodiment, a heat insulation ring is installed between the inner cylinder and the insulation component and the furnace ring of the charcoal furnace to separate the insulation component from the furnace ring, thereby extending the service life of the insulation component. The heat insulation ring is made of metal. In some embodiments, the heat insulation ring is a circular ring structure, wherein the inner ring corresponds to the shape and size of the upper opening of the inner cylinder, and the outer ring corresponds to the shape and size of the opening of the furnace body. It is installed on top of the inner cylinder and the insulation component, and below the furnace ring, to support the furnace ring and separate the insulation component from the furnace ring.

[0034] In this embodiment, the charcoal stove also includes a vent plug 7 that corresponds to the shape and size of the vent. The vent plug 7 can be inserted into the vent and fits snugly against it. By adjusting the vent plug, the degree of charcoal combustion can be easily controlled, embodying the essence of "live fire" and enabling easy switching between "rapid boiling over high heat" and "slow simmering over low heat".

[0035] In this embodiment, the grate is a grid-shaped grate, wherein the air inlet area of ​​the grate is 40-50 square centimeters.

[0036] In this embodiment, the opening area of ​​the vent is 18-22 square centimeters. By controlling the area of ​​the vent and the air intake area of ​​the grate, and combining this with the unique design of the furnace, the charcoal stove can operate without any auxiliary tools during combustion, and the temperature of the charcoal fire can be maintained above 1000℃ for a long time. It can quickly heat cold water in a kettle to boiling point, and the rapid airflow ensures complete combustion of the charcoal, making it safer.

[0037] In this embodiment, the thermal insulation component is made of high-temperature resistant thermal insulation material, wherein the high-temperature resistant refers to thermal insulation material with a heat resistance temperature greater than 1300℃, such as ceramic fiber cotton.

[0038] In this embodiment, the heated component includes a kettle, pot, or earthenware pot, etc.

[0039] In this embodiment, the fuel can be charcoal, firewood, coal, solid alcohol, etc.

[0040] In this embodiment, the furnace body, the inner cylinder, the furnace ring, and the furnace cover are all made of ceramic material.

[0041] Example 1 See Figure 1-3 The charcoal stove in this example includes a stove body 1, an inner cylinder 2, a heat insulation component 3, a grate 4, and a stove ring 5. The stove body 1 is a cylindrical structure with one end open and a cavity. A ventilation opening 11 is provided at the bottom of the stove body 1. A circular boss 22 is provided on the inner wall of the stove body 1. Both the stove body 1 and the boss 22 are made of ceramic material. The grate 4 is installed on the boss 22, located above the ventilation opening 11, and is used to support the heat insulation component 3 and the inner cylinder 2; the inner cylinder 2 is installed in the center of the furnace body 1 cavity, wherein the grate is a 202 stainless steel grid grate, and the air inlet area of ​​the grate is 44 square centimeters. The insulation component is ceramic fiber cotton, which is filled between the furnace body and the inner cylinder. The inner cylinder 2 is a hollow cylindrical structure with openings at both ends. The diameter of the lower opening 22 of the inner cylinder is 10 cm, the diameter of the upper opening 21 of the inner cylinder is 8 cm, and the height of the inner cylinder is 11 cm. The inner cylinder is made of ceramic material. The dimensions of the ventilation opening are: 5.5cm wide and 3.5cm high. The furnace ring 5 is installed on the insulation component 3 and the inner cylinder 2. The furnace ring 5 is circular. The inner ring of the circular furnace ring corresponds to the shape and size of the upper opening of the inner cylinder. The wall surface 52 of the inner ring of the circular furnace ring is a conical surface with a diameter that gradually decreases from top to bottom. The furnace ring 5 is provided with 3 protruding ribs 51, which are arranged at equal intervals around the central axis of the furnace ring. The height of the protruding ribs is 1 cm.

[0042] Experiment Example 2 See Figure 1-5 Based on Example 1, the charcoal stove in this example also includes a furnace cover 6 and an air vent plug 7. The furnace cover 6 includes a cover body 63 and a support part 62. The cover body 63 is connected to the support part 62. The support part 62 has a groove 61 that corresponds to the shape and size of the protruding ridge 51 on the furnace ring 5. A circular groove is opened in the center of the support part 62. The handle 64 is installed in the circular groove. The cover body, the support part and the handle are integrally formed of ceramic material.

[0043] If the charcoal stove is not needed temporarily during use, the stove lid and vent plug can be closed to significantly slow down the burning rate of the charcoal and keep the fire burning for a long time. When it is used again, it can be quickly reignited, saving the trouble of restarting the fire.

[0044] Experimental Example Combustion experiments were conducted using a charcoal furnace to test the temperature of the furnace chamber. Comparative experiments were performed using charcoal furnaces of different chamber sizes. Furnace number 1 is the charcoal furnace used in Example 2. The differences between furnaces numbered 2-4 and Example 2 lie in the diameter of the lower opening of the inner cylinder, the diameter of the upper opening of the inner cylinder, and the height of the inner cylinder, as shown in Table 1. The specific methods are as follows: Add charcoal to the charcoal stove, suspend the K-type armored thermocouple sensor 3 cm above the charcoal pile, ignite the charcoal to make it burn, and read the thermocouple sensor reading. The temperature gradually increases over time. When the charcoal fire is stable and the thermocouple sensor reading is basically stable, measure once every 5 minutes for 30 minutes. Calculate the average of 6 measurements to obtain the highest combustion temperature in the furnace. During this period, ensure that the charcoal in the furnace remains in a stable combustion state.

[0045] The experimental results are shown in Table 1: Table 1 Experimental Results 1 10 8 11 1060℃ 2 12 8 15 1000℃ 3 6 13 8 900℃ 4 11 10 12 980℃ As shown in Table 1, when the height of the inner cylinder is more consistent, the combustion speed is mild and the heat is insufficient. If the diameter of the inner cylinder opening is larger at the top and smaller at the bottom, the charcoal cannot burn completely, the temperature cannot rise to the ideal level within 30 minutes, and smoke and carbon dioxide will be produced.

[0046] In addition, when using a charcoal stove to boil water, by adjusting the height and number of protrusions on the stove ring, the air outlet area of ​​the stove ring can be changed, so that even when a kettle is in contact with the charcoal stove, the air outlet can still maintain good air circulation, the combustion speed can always be kept above 1000℃, the charcoal can burn completely, and no auxiliary fan tools are needed.

[0047] In this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "middle", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In this utility model, if it is described that the first, second, and third are only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A charcoal stove, characterized in that, include: The furnace body is a cylindrical structure with an opening at one end and a cavity for receiving the contents, and a ventilation opening is provided at the bottom of the furnace body. The inner cylinder is installed inside the furnace body. The inner cylinder is a hollow cylindrical structure with openings at both ends. The ratio of the diameter of the lower opening of the inner cylinder to the diameter of the upper opening of the inner cylinder is 1.2-1.5, and the ratio of the height of the inner cylinder to the difference between the diameters of the upper and lower openings of the inner cylinder is 2.5-7.

5. A heat insulation component is installed between the inner cylinder and the furnace body; A grate, installed inside the furnace body, is located above the ventilation opening and is used to support the insulation components and the inner cylinder. A furnace ring is installed on the insulation component and the inner cylinder. The furnace ring is circular, and the inner ring of the circular furnace ring is aligned with the upper opening of the inner cylinder. The furnace ring is provided with raised ridges.

2. The charcoal stove according to claim 1, characterized in that, The diameter of the upper opening of the inner cylinder is 8-10cm, the diameter of the lower opening of the inner cylinder is 10-12cm, and the height of the inner cylinder is 10-15cm.

3. The charcoal stove according to claim 1, characterized in that, The inner wall of the furnace ring is a conical surface with a diameter that gradually decreases from top to bottom.

4. The charcoal stove according to claim 3, characterized in that, The number of protruding ridges is 3-5, and the height of the protruding ridges is 0.5-2cm.

5. The charcoal stove according to claim 1, characterized in that, The furnace body is provided with a boss for supporting the grate.

6. The charcoal stove according to claim 1, characterized in that, The charcoal stove also includes a stove cover having a groove corresponding to the shape and size of the convex ridge.

7. The charcoal stove according to claim 6, characterized in that, The furnace cover includes a cover body, a support part, and a handle connected in sequence, wherein the support part has a groove corresponding to the shape and size of the convex ridge, and the cover body, the support part, and the handle are integrally formed.

8. The charcoal stove according to claim 1, characterized in that, The charcoal furnace is further equipped with a heat insulation ring between the inner cylinder and the heat insulation component and the furnace ring.

9. The charcoal stove according to claim 1, characterized in that, The charcoal stove also includes a vent plug corresponding to the shape and size of the vent, wherein the area of ​​the vent is 18-22 square centimeters.

10. The charcoal stove according to claim 1, characterized in that, The grate is a grid-shaped grate, wherein the air inlet area of ​​the grate is 40-50 square centimeters.

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