An energy-saving stove

Abstract

This utility model relates to the field of stove technology, specifically an energy-saving stove, including a base, a furnace shell, and a table. The furnace shell wall has a strip-shaped inlet for air intake, and a furnace core is disposed inside the furnace shell. An oil tank is disposed inside the base, and the bottom of the furnace core extends to the base but is lower than the bottom of the oil tank. The furnace core includes an inner tube and an outer tube, with the space between the inner and outer tubes forming a combustion chamber. Ventilation openings are provided on both the inner and outer tubes, and several air inlet pipes are evenly arranged around the lower part of the outer tube, communicating with the outside environment. The oil tank outlet is connected to the bottom of the combustion chamber via a pipe, and a regulating valve is provided on the pipe. This stove structure improves combustion efficiency, reduces incomplete combustion of fuel, reduces energy waste, and achieves energy saving. Furthermore, the stove structure does not integrate any electronic components, reducing manufacturing and operating costs, and is not limited by electricity, making it applicable in various scenarios.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, specifically to an energy-saving stove. Background Technology

[0002] Alcohol-based fuels are a new type of fuel formulated primarily with alcohols. They are liquid at room temperature and pressure, making them easy to store and transport. Compared to traditional fossil fuels, alcohol-based fuels have a lower carbon content and better environmental performance. Furthermore, they have a higher calorific value, meeting the energy needs of various stoves and providing a stable heat source for cooking, heating, and other applications. For these reasons, alcohol-based fuel stoves have been widely used in both residential and commercial sectors, gradually becoming a powerful alternative to traditional stoves.

[0003] For example, Chinese patent document CN221279512U discloses an energy-saving and environmentally friendly stove specifically for alcohol-based liquid fuel, including a liquid storage tank, a furnace shell, a furnace core, a liquid spray nozzle located at the center of the bottom of the furnace core, a liquid delivery pipe connected to the lower end of the spray nozzle, the other end of the liquid delivery pipe located inside the liquid storage tank, a liquid delivery pump installed on the liquid delivery pipe, an electronic igniter located on the lower right side of the furnace core, an air distribution plate located at the inner edge of the bottom of the furnace core, the air distribution plate connected to an air delivery pipe, the other end of the air delivery pipe connected to a fan, and a controller located in the center of the front of the liquid storage tank. However, this stove structure contains many electronic components, and the following technical problems exist in its use:

[0004] 1. The integration of electronic components (such as controllers, liquid pumps, fans, electronic igniters, etc.) leads to complex stove structures, higher manufacturing costs, and increased maintenance difficulty due to component aging or failure; it may also cause safety hazards due to short circuits, overloads, etc., reducing equipment reliability.

[0005] 2. In environments with unstable or no power supply (such as remote areas or outdoor scenarios), the reliance on electronic components will directly limit the applicability of the stove. Utility Model Content

[0006] This utility model provides an energy-saving stove that can solve the technical problems of high manufacturing costs and high dependence on electricity, which limit the application scenarios of existing stoves due to the integration of many electronic components.

[0007] This application provides the following technical solution:

[0008] An energy-saving stove includes a base, a furnace shell, and a table. The furnace shell has a strip-shaped inlet for air intake. A furnace core is located inside the furnace shell. An oil tank is located inside the base. The bottom of the furnace core extends to the base but is lower than the bottom of the oil tank. The furnace core includes an inner tube and an outer tube, with the space between them forming a combustion chamber. Ventilation openings are provided on both the inner and outer tubes. Several air inlet pipes, evenly arranged around the circumference of the outer tube, are also provided at the lower part of the outer tube, and these air inlet pipes are connected to the outside environment. The oil tank's outlet is connected to the bottom of the combustion chamber via a pipe, and a regulating valve is installed on the pipe.

[0009] Beneficial effects:

[0010] 1. The bottom of the furnace core extends to the base and is lower than the bottom of the oil tank. The fuel can flow naturally into the bottom of the combustion chamber by gravity using the liquid level difference, eliminating the need for an electrically driven liquid delivery device, thus ensuring a stable fuel supply and energy saving. The stove does not integrate electronic components, reducing the complexity of the electronic control system and manufacturing costs, and lowering the dependence on electricity. Even in areas with power outages or unstable power supply, such as remote mountainous areas and field work sites, it can still be used normally, greatly expanding the application scenarios of the stove and meeting the needs of more users in different environments.

[0011] 2. By replacing the vent with evenly distributed air inlets at the bottom of the outer tube, on the one hand, the combustion flame at the bottom of the combustion chamber can be prevented from escaping through the vent at the bottom of the outer tube, thereby damaging the components around the furnace core and creating a safety risk; on the other hand, the air inlets can guide air into the bottom of the combustion chamber more orderly, providing a sufficient and stable oxygen supply for the combustion of fuel at the bottom. The orderly air intake helps the fuel and oxygen to mix fully, thereby improving combustion efficiency, reducing incomplete combustion of fuel, reducing energy waste, and achieving energy saving.

[0012] Furthermore, the lower part of the outer tube is provided with a cylindrical protective shell, the top of which is open and the air inlet pipe is located inside the protective shell; the top of the protective shell is also provided with an outwardly extending mounting plate, and the top of the base is provided with an installation channel, on which the mounting plate is placed.

[0013] Beneficial effects:

[0014] 1. The protective cover provides physical protection for the air intake duct, preventing mechanical damage such as collisions and scratches from external objects, and preventing dust and debris from entering the air intake duct; the top of the protective cover is open to allow outside air to enter and ensure a sufficient oxygen supply.

[0015] 2. The protective shell can stabilize the air pressure around the air inlet pipe to a certain extent. During the operation of the furnace core, the air pressure inside the combustion chamber will change. If the air inlet pipe is directly exposed to the external environment, the fluctuation of the external air pressure may affect the stability of the air entering the air inlet pipe. The protective shell can form a relatively stable air pressure environment, reduce the impact of external air pressure fluctuations on the air intake, and ensure the smooth progress of the combustion process.

[0016] 3. The protective shell can block the heat radiation generated by combustion from affecting the external environment to a certain extent. Especially when there are other flammable or temperature-sensitive components around the furnace core (such as the oil tank located in the base), the protective shell can play a certain role in heat insulation and protect these components from high temperature.

[0017] Furthermore, a U-shaped groove is provided on the upper shell wall of the protective cover, and an arc-shaped groove is provided on the mounting plate.

[0018] Beneficial effects: By setting up U-shaped grooves and arc grooves, air circulation is facilitated, creating a relatively open space at the bottom of the furnace core, which facilitates the independent and sufficient supply of oxygen without the need for oxygen supply equipment such as fans.

[0019] Furthermore, the air intake pipe has a J-shaped structure, with the bottom end of the air intake pipe set on the outer pipe wall and connected to the combustion chamber, and the top end of the air intake pipe having an opening.

[0020] Beneficial effects:

[0021] 1. The J-shaped structure increases the path length of airflow within a limited space. When air enters from the top opening of the air intake pipe, it flows along the curved path of the J-shape. During this process, the airflow speed and direction change, which is conducive to better heat exchange and mixing between the air and the surrounding environment. This makes the temperature and composition of the air entering the combustion chamber more uniform, providing better combustion conditions for fuel combustion and thus improving combustion efficiency.

[0022] 2. The J-shaped structure also plays a certain role in buffering, preventing outside air from directly impacting the combustion chamber at high speed, allowing the air to enter in a more stable state, which helps maintain the stability of combustion in the combustion chamber.

[0023] Furthermore, the base includes a top plate and side plates, which together form an open mounting cavity at the bottom; the oil tank is fixed inside the mounting cavity by connectors, and heat insulation layers are provided on the top of the oil tank and on the side wall near the furnace core.

[0024] Beneficial effects:

[0025] 1. Physical Protection: The base consists of a top plate and side plates forming an open mounting cavity. This allows air to enter the furnace core from the bottom of the mounting cavity, providing sufficient oxygen for combustion. It also facilitates the placement of the fuel tank, providing physical protection for it. During the handling and use of the stove, the side plates and top plate of the mounting cavity prevent external objects from directly impacting or scratching the fuel tank, avoiding problems such as fuel tank breakage and leakage. This ensures a stable fuel supply and guarantees the normal operation of the stove.

[0026] 2. Heat insulation protection: The top of the fuel tank and the side wall near the furnace core are equipped with heat insulation layers, which can effectively reduce the heat generated by the combustion of the furnace core to be transferred to the fuel tank. Excessive temperature may cause the fuel in the fuel tank to evaporate faster, or even cause danger. The presence of heat insulation layer reduces this risk, maintains the stability of the fuel in the fuel tank, and further ensures the reliability of fuel supply.

[0027] Furthermore, the top of the fuel tank is provided with a filler port, and the corresponding position of the base top plate is provided with an openable and closable baffle; the fuel tank can be any one of the following shapes: straight, L-shaped, U-shaped, or square-shaped.

[0028] Beneficial effects:

[0029] 1. An openable and closable baffle is installed to protect the fuel filler neck of the fuel tank. When refueling is needed, the baffle is opened and the fuel is added to the tank through the filler neck. After refueling, the baffle is closed.

[0030] 2. The fuel tank offers a variety of shapes, including straight, L-shaped, U-shaped, and rectangular, allowing for flexible configuration based on the overall structure of the stove and the actual usage scenario. For example, in installation environments with limited space and irregular shapes, L-shaped or U-shaped fuel tanks can better conform to the space's contours, making full use of corners and irregular spaces to achieve compact installation of the stove; while in situations requiring higher fuel storage capacity and with more regular space, rectangular fuel tanks can meet the needs with their larger capacity; straight fuel tanks are suitable for situations with special requirements for the utilization of space in the length direction; this diverse design greatly improves the stove's adaptability to different usage environments and the utilization rate of materials.

[0031] Furthermore, the bottom of the furnace shell is connected to the base, and the top of the furnace shell is connected to the table; a partition is also provided on the inner wall of the furnace shell near the top of the furnace core, and the top of the furnace core passes through the partition, forming a storage cavity with the partition and the upper wall of the furnace shell.

[0032] Beneficial effects: By setting up partitions to form storage chambers, suitable foods such as potatoes, sweet potatoes, and corn can be heated or baked during use, expanding the functionality of the stove.

[0033] Furthermore, a pot ring is provided on the top of the furnace shell, and a heat transfer plate is slidably mounted on the pot ring. A notch is provided on one side of the pot ring for the heat transfer plate to enter and exit. A storage box for placing the heat transfer plate is provided on the bottom side of the table near the notch. A strip groove is provided at the bottom of the storage box, and a push rod for pushing the heat transfer plate out of the storage box is slidably mounted in the strip groove.

[0034] Beneficial effects:

[0035] 1. The heat transfer plate can be used to place cookware or food to be cooked. When the stove is not in use, the heat transfer plate acts as a seal on the top of the stove shell, which is both aesthetically pleasing and prevents other substances from falling into the stove core and causing blockage.

[0036] 2. When the heat transfer plate is not needed, use the fire hook to move the heat transfer plate from the notch to the storage box under the tabletop. This does not take up extra tabletop or kitchen space and makes the overall layout of the stove more compact and beautiful. When the heat transfer plate is needed, slide the push rod to push it out of the storage box into the pot ring. The operation is simple and convenient.

[0037] Furthermore, a layer of ventilation openings is provided at the lower part of the outer pipe, and this layer of ventilation openings is located in the area of ​​the outer pipe near the top of the air inlet pipe. Two layers of ventilation openings are provided at the upper part of the outer pipe, and the number of upper ventilation openings is less than the number of lower ventilation openings.

[0038] Beneficial effects: The fewer upper vents can constrain and guide the flame, preventing it from spreading excessively upwards and maintaining a stable flame shape; the more lower vents provide sufficient oxygen to maintain the intensity and height of the flame. The cooperation between the upper and lower vents ensures stable combustion of the flame within the combustion chamber, reduces flame flickering and jumping, ensures the continuity of the combustion process, and thus improves thermal efficiency.

[0039] Furthermore, a retractable tube is also provided at the top of the outer tube.

[0040] Beneficial effects: The converging cylinder has a converging and restraining effect on the flame, preventing the flame from spreading disorderly at the top, and confining the flame and hot air to a smaller area. This allows the heat to be transferred to external energy-consuming equipment more concentratedly, reducing heat loss and improving energy utilization efficiency. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the stove's structure;

[0042] Figure 2 for Figure 1 A cross-sectional view of the stove;

[0043] Figure 3 This is a schematic diagram of the furnace core structure;

[0044] Figure 4 for Figure 3 Cross-sectional view of the furnace core;

[0045] Figure 5 for Figure 1 A bottom view of the stove;

[0046] Figure 6 for Figure 1 A diagram of a stove without a table;

[0047] Figure 7 This is a bottom view of the tabletop. Detailed Implementation

[0048] The following detailed description illustrates the specific implementation methods:

[0049] The markings in the accompanying drawings include: base 1, top plate 11, baffle 111, side plate 12, mounting cavity 102, pad 13, support leg 14, furnace shell 2, strip opening 21, partition 22, pot ring 23, notch 231, heat transfer plate 24, table 3, storage box 31, strip groove 311, push rod 32, furnace core 4, outer tube 41, combustion chamber 412, inner tube 42, vent 400, air inlet pipe 43, protective shell 44, U-shaped groove 441, mounting plate 45, arc groove 451, gathering cylinder 46, oil tank 5, connector 50, regulating valve 51, and oil filling port 52.

[0050] Example 1

[0051] like Figure 1-2 As shown, an energy-saving stove includes a base 1, a furnace shell 2, and a tabletop 3. The furnace shell 2 has a strip-shaped inlet 21 for air intake, and a furnace core 4 is installed inside the furnace shell 2. An oil tank 5 is installed inside the base 1. The bottom of the furnace core 4 extends to the base 1 and is lower than the bottom of the oil tank 5. The furnace core 4 includes an inner tube 42 and an outer tube 41. The space between the inner tube 42 and the outer tube 41 forms a combustion chamber 412. Ventilation openings 400 are provided on both the inner tube 42 and the outer tube 41. Several air inlet pipes 43 are also provided at the lower part of the outer tube 41, and the air inlet pipes 43 are connected to the outside. The discharge port of the oil tank 5 is connected to the bottom of the combustion chamber 412 through a pipe. A regulating valve 51 is provided on the pipe. Specifically, in this embodiment, the regulating valve 51 is a needle valve specifically used for alcohol-based oil stoves.

[0052] like Figure 3-4As shown, in this embodiment, the air inlet pipe 43 has a J-shaped structure. The bottom end of the air inlet pipe 43 is welded to the wall of the outer pipe 41 and communicates with the combustion chamber 412. The top end of the air inlet pipe 43 is open. The specific number of air inlet pipes 43 can be set to 4-8. In this embodiment, 6 are evenly arranged. The lower part of the outer pipe 41 is also provided with a cylindrical protective shell 44. The top of the protective shell 44 is open, and the upper shell wall of the protective shell 44 is provided with a U-shaped groove 441. The air inlet pipe 43 is located inside the protective shell 44. The top of the protective shell 44 is also provided with an outwardly extending mounting plate 45. The top of the base 1 is provided with a mounting channel. The mounting plate 45 is fixed to the mounting channel by bolts. The mounting plate 45 is also provided with an arc-shaped groove 451.

[0053] More preferably, a number of ventilation openings 400 are evenly arranged on the inner tube 42 of the furnace core 4. Specifically, the ventilation openings 400 are arranged in layers, with each layer including two ventilation openings 400, and adjacent layers of ventilation openings 400 are staggered. A layer of ventilation openings 400 is provided at the lower part of the outer tube 41, and this layer of ventilation openings 400 is located in the area of ​​the outer tube 41 near the top of the air inlet tube 43; two layers of ventilation openings 400 are provided at the upper part of the outer tube 41, and the number of ventilation openings 400 in the upper layer is less than the number of ventilation openings 400 in the lower layer; a converging cylinder 46 for concentrating the flame is also provided at the top of the outer tube 41.

[0054] like Figure 5-6 As shown, the base 1 includes a top plate 11 and a side plate 12, which together form an open-bottomed mounting cavity 102. The side plate 12 also has a ventilated slot 21. The oil tank 5 is fixed to the inner wall of the mounting cavity 102 via a connector 50. A heat insulation layer (not shown) is provided on the top of the oil tank 5 and on the side wall near the furnace core 4. Specifically, in this embodiment, the heat insulation layer is made of self-adhesive aluminum foil. One end of the connector 50 is welded to the bottom of the oil tank 5, and the other end is fixed to the inner wall of the side plate 12 by bolts. Figure 6 As shown, the top of the fuel tank 5 is provided with a filler neck 52, and the corresponding position of the top plate 11 of the base 1 is provided with an openable and closable baffle 111; the fuel tank 5 can be any one of the following shapes: straight, L-shaped, U-shaped, or square-shaped. Figure 5 As shown in the figure, this embodiment illustrates an L-shaped oil tank 5 structure. More preferably, a pad 13 is also provided at the four corners of the bottom of the base 1, and a support leg 14 is also provided on the pad 13. The support leg 14 is threadedly connected to the pad 13, and the height of the entire stove can be adjusted by rotating the support leg 14.

[0055] like Figure 2As shown, the bottom of the furnace shell 2 is connected to the base 1, and the top of the furnace shell 2 is connected to the table 3. Several strip-shaped openings 21 for ventilation are provided on the wall of the furnace shell 2. A partition 22 is also provided on the inner wall of the furnace shell 2 near the top of the furnace core 4. The top of the furnace core 4 passes through the partition 22. The partition 22 and the upper wall of the furnace shell 2 form a storage cavity, which can heat or bake suitable foods such as potatoes, sweet potatoes, and corn.

[0056] like Figure 6 As shown, a pot ring 23 is also provided on the top of the furnace shell 2, and a heat transfer plate 24 is slidably mounted on the pot ring 23. A notch 231 for the heat transfer plate 24 to enter and exit is also provided on one side of the pot ring 23; Figure 7 As shown, a storage box 31 for placing the heat transfer plate 24 is also provided on the side of the bottom of the table 3 near the notch 231. A strip groove 311 is provided at the bottom of the storage box 31, and a push rod 32 for pushing the heat transfer plate 24 out of the storage box 31 is slidably provided in the strip groove 311.

[0057] The heat transfer plate 24 can be used to place cookware or food to be cooked. When the stove is not in use, the heat transfer plate 24 seals the top of the stove shell 2, which is both aesthetically pleasing and prevents other substances from falling into the stove core 4 and causing blockage. When the heat transfer plate 24 is not needed, it can be moved from the notch 231 to the storage box 31 at the bottom of the tabletop 3 using a fire hook. This does not take up extra tabletop or kitchen space and makes the overall layout of the stove more compact and aesthetically pleasing. When the heat transfer plate 24 is needed, it can be pushed out of the storage box 31 into the pot ring 23 by sliding the push rod 32. The operation is simple and convenient.

[0058] In use, rotating the regulating valve 51 located inside the base 1 allows the alcohol-based fuel to enter the combustion chamber 412 of the furnace core 4 through the connecting pipe under gravity. The alcohol-based fuel at the bottom is then ignited using a lighter. Oxygen is automatically supplied to the combustion chamber 412 through the air inlet pipe 43, the outer pipe 41, and the vents 400 on the inner pipe 42. After the fuel undergoes its first combustion at the bottom of the combustion chamber 412, it vaporizes and undergoes a second combustion during its ascent, supplied with oxygen by the evenly distributed vents 400 on the inner pipe 42. During this process, the vents 400 on the inner pipe 42 supply oxygen evenly, ensuring continuous and stable combustion of the fuel as it rises. Upon reaching the top, oxygen is supplied by the vents 400 on the outer pipe 41 for a third combustion. This three-stage combustion design greatly improves the degree of fuel combustion, reduces fuel residue, and enhances energy utilization efficiency.

[0059] In this application, the bottom of the furnace core 4 extends to the base 1 and is lower than the bottom of the oil tank 5. The fuel can flow naturally into the bottom of the combustion chamber 412 by gravity using the liquid level difference, eliminating the need for an electrically driven liquid delivery device, thus ensuring a stable fuel supply and energy saving. Furthermore, since no electronic components are integrated into the stove, the complex electronic control system and manufacturing costs are reduced, and the dependence on electricity is lowered. Even in areas with power outages or unstable power supply, such as remote mountainous areas and field work sites, it can still be used normally, greatly expanding the application scenarios of the stove and meeting the usage needs of more users in different environments.

[0060] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions 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 structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications 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. An energy-saving stove, comprising a base, a furnace shell, and a tabletop, wherein the furnace shell wall is provided with a strip-shaped inlet for air intake, and a furnace core is disposed inside the furnace shell, characterized in that, An oil tank is installed inside the base, and the bottom of the furnace core extends to the base and is lower than the bottom of the oil tank. The furnace core includes an inner tube and an outer tube, and the space between the inner tube and the outer tube forms a combustion chamber. Ventilation ports are provided on both the inner tube and the outer tube, and several air inlet pipes are also provided at the bottom of the outer tube, which are evenly arranged around the circumference of the outer tube and are connected to the outside. The discharge port of the oil tank is connected to the bottom of the combustion chamber through a pipe, and a regulating valve is provided on the pipe.

2. The energy-saving stove according to claim 1, characterized in that: The lower part of the outer tube is also provided with a cylindrical protective shell, the top of which is open and the air inlet pipe is located inside the protective shell; the top of the protective shell is also provided with an outwardly extending mounting plate, and the top of the base is provided with an installation channel, on which the mounting plate is placed.

3. An energy-saving stove according to claim 2, characterized in that: The upper shell of the protective cover is provided with a U-shaped groove, and the mounting plate is provided with an arc-shaped groove.

4. An energy-saving stove according to claim 3, characterized in that: The air inlet pipe has a J-shaped structure, with the bottom end of the air inlet pipe set on the outer pipe wall and connected to the combustion chamber, and the top end of the air inlet pipe having an opening.

5. An energy-saving stove according to any one of claims 1-4, characterized in that: The base includes a top plate and side plates, which together form an open mounting cavity. The oil tank is fixed in the mounting cavity by connectors, and heat insulation layers are provided on the top of the oil tank and on the side wall near the furnace core.

6. An energy-saving stove according to claim 5, characterized in that: The top of the fuel tank is provided with a filling port, and the corresponding position of the top plate of the base is provided with an openable and closable baffle; the fuel tank can be any one of the following shapes: straight, L-shaped, U-shaped, or square-shaped.

7. An energy-saving stove according to claim 6, characterized in that: The bottom of the furnace shell is connected to the base, and the top of the furnace shell is connected to the table. A partition is also provided on the inner wall of the furnace shell near the top of the furnace core. The top of the furnace core passes through the partition, and the partition and the upper wall of the furnace shell form a storage cavity.

8. An energy-saving stove according to claim 1 or 7, characterized in that: The top of the furnace shell is also provided with a pot ring, on which a heat transfer plate is slidably mounted. One side of the pot ring is also provided with a notch for the heat transfer plate to enter and exit. The bottom of the table is also provided with a storage box for placing the heat transfer plate on the side near the notch. The bottom of the storage box is provided with a strip groove, and a push rod for pushing the heat transfer plate out of the storage box is slidably mounted in the strip groove.

9. An energy-saving stove according to claim 1, characterized in that: The lower part of the outer pipe is provided with a layer of ventilation openings, which are located in the area of ​​the outer pipe near the top of the air inlet pipe. The upper part of the outer pipe is provided with two layers of ventilation openings, and the number of upper ventilation openings is less than the number of lower ventilation openings.

10. An energy-saving stove according to claim 1 or 9, characterized in that: The top of the outer tube is also equipped with a gathering tube.

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