A safe, environment-friendly and energy-saving powder sintering stove core for high-flash-point alcohol oil

Abstract

This invention belongs to the field of fuel stove technology and provides a safe, environmentally friendly, and energy-saving stove with a powder-sintered core for high flash point alcohol oil. The stove includes a table, a cooking utensil support, a core, and an oil filling sight glass. By eliminating asbestos and metal mesh, the burner head uses nickel-based alloy powder sintered at high temperatures, which is heat-resistant and wear-free, eliminating the need for frequent replacements. Combustion produces no odor, volatiles, or dust. The ceramic fiber oil-absorbing cotton does not accumulate moisture, making re-ignition convenient. Flame adjustment does not require adding or removing the cotton core; precise flame control is achieved by adjusting the air intake ring with an adjustment rod. The burner head's micron-level pores and air chamber work together to achieve a uniform supply of alcohol oil in a small amount, preventing excessive absorption, ensuring complete combustion, saving oil, and eliminating carbon buildup. Furthermore, in the event of accidental flameout, no high-temperature metal mesh remains, and the alcohol oil does not evaporate, producing any odor. This invention balances environmental protection and user experience, and is suitable for the combustion requirements of high flash point alcohol oil.

Description

Technical Field

[0001] This invention belongs to the field of fuel stove technology, specifically a safe, environmentally friendly and energy-saving stove with a powder sintered furnace core that uses high flash point alcohol oil. Background Technology

[0002] High flash point alcohol oil, also known as safe oil or energy-saving oil, is a new type of energy-saving and environmentally friendly liquid fuel commonly used in Chinese kitchens in recent years. It is a flammable liquid produced by the combined alcohol production equipment of fertilizer plants, and is formulated with the addition of calorific value enhancers, combustion improvers, etc. It is non-pressurized, non-explosive, and non-toxic, with an auto-ignition point of 413℃ and a boiling range of 196.5~198.5℃. It can be used for stir-frying, drying, etc. It burns completely without black smoke or carbon deposits, and has low exhaust emissions. Its calorific value is 9600 kcal / kg, and its cost is lower than that of diesel and liquefied petroleum gas. It can be stored and transported at normal temperature and pressure, without the need for high-pressure steel cylinders. If it leaks, it can be dissolved in water or dried by air. The flameout cap can be used to extinguish the leak.

[0003] However, existing technologies rely on asbestos or metal mesh to ignite high-flash-point alcohol oils. Asbestos or cotton cores are consumed after burning and are difficult to reuse. Furthermore, combustion produces odors, volatiles, and dust. After extinguishing, the cotton core accumulates moisture, making re-ignition difficult. Metal meshes are mostly made of 201 or 304 stainless steel, which are not resistant to high temperatures and are prone to red-hot, deformation, or even burn-through, requiring frequent replacement. At the same time, adjusting the flame temperature by simply increasing or decreasing the number of cotton cores is cumbersome. The metal mesh absorbs too much alcohol oil, resulting in incomplete combustion, which wastes fuel and produces carbon deposits. If the flame is accidentally extinguished midway, the residual heat of the metal mesh will evaporate the residual alcohol oil, producing continuous odorous gases that pollute the environment. Moreover, during the combustion of the metal mesh, high-flash-point fuel oil will continuously splatter and burn in particulate form from the burning area of ​​the mesh, also producing smoke, posing a safety hazard.

[0004] To address the problems raised in the background art, those skilled in the art have proposed a safe, environmentally friendly, and energy-saving stove with a powder sintering furnace core for high flash point alcohol oils.

[0005] The information disclosed above in this background section is only for enhancing the understanding of the background section of this invention, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a safe, environmentally friendly, and energy-saving stove with a powder sintered furnace core for use with high flash point alcohol oil, thus solving the problems of easily damaged ignition components, lack of environmental friendliness, difficulty in fire control, poor combustion, and odor in the prior art.

[0007] To achieve the above objectives, the present invention provides a safe, environmentally friendly and energy-saving stove with a powder sintered furnace core for use with high flash point alcohol oil, including a table body, a cooking utensil support, a furnace core and an oil filling sight glass;

[0008] The bottom of the table is symmetrically equipped with multiple table stove rubber pads. The inside of the table is equipped with an oil storage tank and an air storage tank. The table is equipped with an oil drain outlet, a water drain outlet, an external micro air inlet, a regulating valve, an air pressure gauge and an air pump.

[0009] The cooking utensil support is located on the top of the table and includes an air inlet pipe, an air inlet adjustment ring, a quartz glass flame concentrator ring, a high-temperature resistant metal flame concentrator ring, and an adjustment rod.

[0010] The furnace core is located on the top of the table and inside the cooking utensil support. The furnace core includes a first furnace core base, an oil-immersed sleeve, an air inlet base, a furnace core burner, an air chamber, an air outlet surface, an air inlet pipe, and a second furnace core base. The oil filling sight glass is located on the table.

[0011] Preferably, the oil drain port is located at the bottom of the table and is connected to the oil storage tank; the drain outlet is located at the bottom of the table and is connected to the air storage tank; the external micro air inlet is located at the bottom of the table and is connected to the air storage tank; the pressure gauge is located on the side of the table and is connected to the air storage tank; the air pump is located on the side of the table and is connected to the air storage tank; the regulating valve is located on the side of the table, and one end of the regulating valve is connected to the air storage tank.

[0012] Preferably, the air inlet pipe has an annular hollow structure, the bottom of the air inlet pipe is connected to the inside of the table body, the air inlet adjustment ring is nested inside the air inlet pipe, the air inlet adjustment ring is threaded to one end of the adjustment rod, the other end of the adjustment rod extends to the outside of the cooking utensil support, the quartz glass heat-concentrating ring is nested in the middle of the cooking utensil support, and the high-temperature resistant metal heat-concentrating ring is located on the upper part of the cooking utensil support.

[0013] Preferably, the first furnace core base is located on the top of the table, the first furnace core base is a metal sleeve structure, and the second furnace core base is nested inside the first furnace core base and is adapted to the first furnace core base.

[0014] Preferably, the second furnace core base and the furnace core burner are integrally formed by high-temperature sintering. The gas cavity is a centrally hollow structure and is located inside the second furnace core base. The second furnace core base is filled with ceramic fiber oil-absorbing cotton located outside the gas cavity. The gas outlet surface is the outer wall of the gas cavity and is covered with vent holes. The air inlet base is located at the bottom of the second furnace core base and communicates with the gas cavity.

[0015] Preferably, the furnace core burner head is made of nickel-based alloy powder and sintered at high temperature through a mold. The thickness of the furnace core burner head is 2.5-3.5 mm. The interior of the furnace core burner head is filled with small pores of 20-80 μm. The outer cylindrical surface and top of the furnace core burner head are uniformly provided with flame outlet holes of 2-4 mm.

[0016] Preferably, the oil-immersed sleeve is located on the outer side of the bottom of the second furnace core base, and the oil-immersed sleeve is sealed to the second furnace core base. The oil-immersed sleeve has long strip punches on its outside, and the inside of the oil-immersed sleeve is filled with ceramic fiber oil-absorbing cotton. The oil-immersed sleeve is connected to the oil storage tank.

[0017] Preferably, one end of the air intake pipe is sealed to the air intake base, and the other end of the air intake pipe passes through the table body and is connected to the other end of the regulating valve.

[0018] Preferably, the oil filling sight glass is made of transparent glass and has scale lines. One end of the oil filling sight glass is connected to the oil storage tank, and the other end of the oil filling sight glass is provided with a sealing cap.

[0019] Preferably, one end of the external micro air inlet is connected to the air storage chamber, and the other end is used to connect to an external air pump.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention eliminates asbestos and metal mesh. The burner head uses nickel-based alloy powder sintered at high temperatures, making it heat-resistant and wear-free, eliminating the need for frequent replacements. Combustion produces no odor, volatiles, or dust. The ceramic fiber oil-absorbing cotton does not accumulate moisture, making re-ignition convenient. Flame adjustment does not require adding or removing cotton cores; precise flame control is achieved by adjusting the air intake ring with an adjustment rod. The burner head features micron-level pores and a gas chamber that work together to provide a small, uniform supply of alcohol oil, preventing excessive adsorption, ensuring complete combustion, saving oil, and eliminating carbon buildup. In case of accidental flameout, no high-temperature metal mesh remains, and alcohol oil does not evaporate, producing any odor. This design balances environmental protection and user experience, and is suitable for high flash point alcohol oil combustion.

[0022] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a safe, environmentally friendly, and energy-saving stove with a powder sintering furnace core for high flash point alcohol oil according to an embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of a safe, environmentally friendly, and energy-saving stove with a powder sintering furnace core used for high flash point alcohol oil in an embodiment of the present invention;

[0025] Figure 3 This is a bottom view of a safe, environmentally friendly, and energy-saving stove table body using a powder sintering furnace core for high flash point alcohol oil in an embodiment of the present invention;

[0026] Figure 4This is a schematic diagram of the structure of a powder sintered furnace core for a safe, environmentally friendly, and energy-saving stove and cooking utensil support for high flash point alcohol oil, as described in an embodiment of the present invention.

[0027] Figure 5 This is an exploded view of the structure of a safe, environmentally friendly, and energy-saving stove cooking utensil support for a powder sintered furnace core used in a high flash point alcohol oil according to an embodiment of the present invention;

[0028] Figure 6 This is a cross-sectional view of a safe, environmentally friendly, and energy-saving stove core for a powder sintered furnace core used in a high flash point alcohol oil according to an embodiment of the present invention;

[0029] Figure 7 This is an exploded view of the structure of a safe, environmentally friendly, and energy-saving stove core for a powder sintering furnace core used in high flash point alcohol oil according to an embodiment of the present invention.

[0030] Figure 8 This is a diagram illustrating the high-fire combustion effect of a powder sintering furnace core for a high flash point alcohol oil, as described in an embodiment of the present invention, which is safe, environmentally friendly, and energy-saving.

[0031] Figure 9 This is a diagram illustrating the medium-fire combustion effect of a safe, environmentally friendly, and energy-saving stove core with gas source support for a powder sintering furnace core used in a high flash point alcohol oil according to an embodiment of the present invention.

[0032] Figure 10 This is a diagram illustrating the small-flame combustion effect of a powder sintering furnace core for a high flash point alcohol oil according to an embodiment of the present invention, where the furnace core has gas source support.

[0033] Figure 11 This is a diagram illustrating the high-fire combustion effect of a powder sintering furnace core for high flash point alcohol oil, as described in an embodiment of the present invention, without gas source support.

[0034] Figure 12 This is a diagram illustrating the medium-fire combustion effect of a safe, environmentally friendly, and energy-saving stove with a powder sintering furnace core for high flash point alcohol oil, as described in an embodiment of the present invention, without gas source support.

[0035] Figure 13 This image shows the low-fire combustion effect of a powder sintering furnace core for a high flash point alcohol oil, as described in an embodiment of the present invention, without gas source support.

[0036] In the diagram: 1. Table body; 11. Table stove rubber pad; 12. Oil reservoir; 13. Gas reservoir; 14. Oil drain; 15. Drain; 16. External miniature air inlet; 17. Regulating valve; 18. Pressure gauge; 19. Air pump; 2. Cooking utensil support; 21. Air inlet pipe; 22. Air inlet regulating ring; 23. Quartz glass concentrator ring; 24. High-temperature resistant metal concentrator ring; 25. Adjusting rod; 3. Stove core; 31. First stove core base; 32. Oil-immersed sleeve; 33. Air inlet base; 34. Stove core burner head; 35. Gas chamber; 36. Gas outlet surface; 37. Air inlet pipe; 38. Second stove core base; 4. Oil filling sight glass. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. It should be noted that the accompanying drawings are schematic and not illustrated to scale. For clarity and convenience, the relative sizes and proportions of the parts shown in the drawings have been exaggerated or reduced in size, and any size is only illustrative and not limiting.

[0038] Example:

[0039] Please see Figure 1 - Figure 13As shown, a safe, environmentally friendly, and energy-saving stove with a powder-sintered furnace core for high flash point alcohol oil includes a table body 1, a cooking utensil support 2, a furnace core 3, and an oil filling sight glass 4. The table body 1 serves as the basic support and functional integration carrier of the stove. Four table-to-stove rubber pads 11 (made of nitrile rubber, 8mm thick, 30mm in diameter) are symmetrically arranged on its bottom. The rubber pads are fixed to the four corners of the bottom surface of the table body 1 with bolts, effectively buffering the impact force when the stove is placed, preventing scratches caused by direct friction between the table body 1 and the placement surface, and improving the anti-slip performance of the stove on smooth countertops. The interior of the table body 1 is divided by metal partitions. The table 1 consists of two independent storage chambers: an oil storage chamber 12 and a gas storage chamber 13. The oil storage chamber 12 has a capacity of 6L (suitable for a week's oil consumption in a family or small catering setting), and the gas storage chamber 13 has a capacity of 2L (to meet the continuous gas supply needs for 8-10 hours). The table body 1 also integrates an oil drain outlet 14, a water drain outlet 15, an external mini air inlet 16, a regulating valve 17, a pressure gauge 18, and an air pump 19. Each component is functionally linked to the oil storage chamber 12 and the gas storage chamber 13 through pre-set pipelines or mechanical structures. The cooking utensil support 2 is welded to the top of the table body 1, and the support is a ring-shaped metal frame (made of 304 stainless steel). Material (3mm thick), used to support cooking utensils such as woks and soup pots. The support specifically includes an air inlet pipe 21, an air inlet adjustment ring 22, a quartz glass flame concentrator ring 23, a high-temperature resistant metal flame concentrator ring 24, and an adjustment rod 25. These components work together to control air intake and concentrate the flame, improving combustion thermal efficiency. The furnace core 3 is installed on the top of the table body 1 and located inside the cooking utensil support 2. It is the core combustion unit for high flash point alcohol oil, and its axis coincides with the axis of the cooking utensil support 2, ensuring that the flame can be evenly applied to the bottom of the cooking utensils. The furnace core 3 includes a first furnace core base 31, an oil-immersed sleeve 32, and an air inlet base 3. 3. The furnace core burner head 34, gas chamber 35, gas outlet surface 36, gas inlet pipe 37, and second furnace core base 38 are integrated into a single structure through sintering and sealing connections, realizing oil and gas separation, transportation, and mixed combustion. The oil filling sight glass 4 is fixed to the table body 1 through a threaded connection, serving as both a channel for adding high flash point alcohol oil and allowing real-time observation of the oil level in the oil storage tank 12, preventing overfilling or insufficient oil level from causing combustion interruption. The modular design integrates oil storage, gas storage, combustion, and control functions into one compact and rationally laid-out structure, suitable for various usage scenarios such as home kitchens and outdoor camping.

[0040] In one specific embodiment, the oil drain port 14 adopts a stainless steel ball valve structure and is located on the bottom of the table body 1 near the oil storage tank 12. The inlet end of the oil drain port 14 is connected to the bottom of the oil storage tank 12, and the outlet end is equipped with a sealing plug. When it is necessary to change the fuel or clean the oil storage tank 12, the ball valve can be opened to drain the residual oil in the oil storage tank 12, avoiding the residual oil from deteriorating due to long-term storage and affecting the combustion effect. The drain outlet 15 also adopts a stainless steel ball valve structure and is located on the bottom of the table body 1 near the air storage tank 13 (symmetrically distributed with the oil drain port 14). The inlet end of the drain outlet 15 is connected to the bottom of the air storage tank 13 through a seamless steel pipe. Since compressed air easily contains condensate, long-term accumulation... This can cause the gas storage chamber 13 to fill with water or affect the stability of the gas supply. Regularly opening the ball valve at the drain outlet 15 will drain the condensate and extend the service life of the gas storage chamber 13. The external miniature air inlet 16 is a circular metal interface located at the center of the bottom of the table body 1. The inner end of the air inlet is connected to the top of the gas storage chamber 13 via a high-pressure resistant hose (made of fluororubber, pressure rating 1.0MPa). When the stove is used in a fixed location (such as a restaurant kitchen) for a long time, an external air pump can be connected through the external miniature air inlet 16 to replace the manual air pump 19 and achieve continuous gas supply without frequent interruptions to cooking. The pressure gauge 18 is a radially mounted Bourdon tube pressure gauge (range 0~0.4MPa). The pressure gauge 18 (accuracy class 1.6) is fixed to the upper side of the table body 1 via a threaded interface. The detection end of the pressure gauge 18 is connected to the inside of the gas storage chamber 13 via a copper tube. The user can read the pressure value inside the gas storage chamber 13 in real time through the pressure gauge 18. When the pressure is lower than 0.035MPa, replenish the gas in time; when it is higher than 0.2MPa, stop replenishing the gas to avoid the risk of overpressure. The air pump 19 is a manual piston type air pump 19 (maximum air pressure 0.8MPa, cylinder diameter 30mm), which is fixed to the lower side of the table body 1 via a quick-release buckle (height 0.5m, for easy operation). The air outlet of the air pump 19 is connected to the gas storage chamber 13 via a one-way valve. When the stove is outdoors and there is no external air pump, the air pump 19 is used. In use, the gas storage chamber 13 is filled with air by repeatedly pressing the piston of the air pump 19. A single filling can bring the pressure of the gas storage chamber 13 to 0.15-0.2MPa by 15-20 times, which can meet the combustion requirements for 2-3 hours. The regulating valve 17 is a knob-type needle valve (made of stainless steel, with an adjustment accuracy of 0.01L / min), located on the side of the table 1 near the pressure gauge 18. The inlet end of the regulating valve 17 is connected to the gas storage chamber 13 through a high-pressure resistant hose, and the outlet end is connected to the air inlet pipe 37 of the furnace core 3 through a pipeline. By rotating the knob of the regulating valve 17, the valve core opening can be changed, thereby controlling the flow rate of compressed air entering the furnace core 3, providing a basis for adjusting the flame hardness.

[0041] In one specific embodiment, the air inlet pipe 21 is a ring-shaped hollow structure, integrally formed from 304 stainless steel. The bottom of the air inlet pipe 21 is connected to the air inlet channel at the top of the table body 1 (the air inlet channel is open to the outside atmosphere of the table body 1). The ring-shaped structure design allows air to enter evenly from the circumference of the air inlet pipe 21, avoiding insufficient local air intake that could lead to incomplete combustion. The air inlet regulating ring 22 is a ring-shaped metal ring adapted to the air inlet pipe 21, made of 45# steel. The air inlet regulating ring 22 is nested inside the air inlet pipe 21, with a gap fit between the two to ensure that the air inlet regulating ring 22 can rotate flexibly within the air inlet pipe 21. The regulating rod 25 is a metal rod, one end of which is threaded to the air inlet regulating ring 22, and the other end extends outward through the side wall of the cooking utensil support 2, with a knob at the extended end. When the user rotates the knob, the air inlet regulating ring 22 can be rotated within the air inlet pipe 21. By changing the overlapping area between the air inlet regulating ring 22 and the air inlet hole on the side wall of the air inlet pipe 21, the air intake volume can be continuously adjusted (overlapping area). The larger the volume, the greater the air intake, and vice versa. The quartz glass concentrator ring 23 is a ring-shaped transparent quartz glass component, which is nested in the middle of the cooking utensil support 2 through a high-temperature resistant silicone sealing ring. The quartz glass material can withstand high temperatures above 1200℃ and has good light transmittance, making it easy to observe the flame status. Its main function is to concentrate the flame in the middle of the burner core 3, reduce the heat diffusion to the side, and make the flame burn upward. The high-temperature resistant metal concentrator ring 24 is a ring-shaped metal component made of 310S stainless steel (withstanding temperatures above 1200℃). It is set on the upper part of the cooking utensil support 2. Its inner wall has a ring-shaped guide groove, which can further concentrate the outer flame of the burner core 3 and guide the heat to the bottom of the cooking utensil, reduce the heat loss of the outer flame, and improve the heat transfer efficiency. The air intake volume is precisely controlled by the cooperation of the air intake regulating ring 22 and the regulating rod 25. The combination of the dual concentrator effect of the quartz glass concentrator ring 23 and the high-temperature resistant metal concentrator ring 24 effectively improves the combustion thermal efficiency, while making it easy for users to observe and operate.

[0042] In one specific embodiment, the first burner base 31 is a metal sleeve structure made of 304 stainless steel. The outer wall of the sleeve is welded to the burner 3 mounting seat on the top of the table body 1 (the mounting seat and the table body 1 are integrally formed). The inner wall of the sleeve is provided with an axial guide groove. The second burner base 38 is a cylindrical structure made of nickel-based alloy. Its outer wall is provided with a guide protrusion that matches the guide groove of the first burner base 31. The second burner base 38 is nested inside the first burner base 31. Axial sliding is achieved through the cooperation of the guide protrusion and the guide groove. The two are also in a clearance fit to ensure that the second burner base 38 can be stably raised and lowered along the first burner base 31. In actual use, the height of the burner head 34 can be adjusted by manually pushing the second burner base 38 up or down according to the distance requirement between the bottom of the cooking utensils and the burner head 34. The height of the burner 3 can be adjusted through the sliding nested structure to adapt to cooking utensils of different depths and types, avoiding the problem of mismatched firepower caused by the fixed height of the burner 3.

[0043] In one specific embodiment, the top of the second furnace core base 38 and the furnace core burner head 34 are integrally formed by a high-temperature sintering process (sintering temperature 1200℃, holding time 2 hours). After sintering, the tensile strength of the joint surface between the two is ≥30MPa, ensuring that no separation or leakage occurs under long-term high-temperature combustion. The gas cavity 35 is a centrally hollow structure located inside the second furnace core base 38, with the axis of the gas cavity 35 coinciding with the axis of the second furnace core base 38. The top of the gas cavity 35 is closed and connected to the furnace core burner head 34. The bottom of component 4 is fitted together and connected to the air inlet base 33. The air chamber 35 is integrally molded using the same nickel-based alloy material as the second furnace core base 38 to ensure high temperature resistance and structural strength. Ceramic fiber oil-absorbing cotton is filled inside the second furnace core base 38 and located in the annular area outside the air chamber 35. The oil-absorbing cotton is made of high-purity ceramic fiber material (temperature resistance above 1150℃, oil absorption rate ≥300%) and is filled by pressure fitting to ensure that the oil-absorbing cotton is tightly fitted to the inner wall of the second furnace core base 38 and the outer wall of the air chamber 35 without gaps. The main function of the oil-absorbing cotton is to absorb the high flash point alcohol oil transported from the oil-immersed sleeve 32 and slowly guide it to the furnace core burner head 34 through capillary action. The gas outlet surface 36 is the outer wall of the gas cavity 35 (i.e., the outer wall of the annular hollow structure). The gas outlet surface 36 is covered with uniformly distributed air pores (pore diameter 0.5~1μm). The air pores are processed by high-temperature sintering. The pore diameter of the air pores is smaller than the molecular diameter of the high flash point alcohol oil, which can ensure that compressed air overflows from the gas cavity 35, while preventing the high flash point alcohol oil from seeping into the gas cavity 35, thus achieving... Oil and gas separation is achieved through a cylindrical metal inlet base 33, which is fixed to the bottom center of the second furnace core base 38 by welding. The internal channel of the inlet base 33 is connected to the gas chamber 35, and the external thread is used for sealing connection with the inlet pipe 37. The connection stability between the second furnace core base 38 and the furnace core burner head 34 is ensured by sintering and integral molding. The gas chamber 35 and the ceramic fiber oil-absorbing cotton realize the separation and transportation of oil and gas, avoiding the safety risks caused by direct mixing of oil and gas, and providing a foundation for efficient combustion.

[0044] In one specific embodiment, the furnace core burner head 34 uses nickel-based alloy powder (grade Inconel 625, powder particle size 50-100μm) as raw material. This alloy has excellent high temperature resistance (long-term operating temperature ≤1093℃) and corrosion resistance, and can withstand the high temperature environment during the combustion of high flash point alcohol oils, avoiding burn-through and deformation caused by long-term use. It is prepared using a high-temperature sintering process with molds, and the specific steps are as follows:

[0045] Nickel-based alloy powder is filled into a custom mold (the mold cavity is consistent with the shape of the furnace core burner head 34), and cold-pressed under a pressure of 20MPa.

[0046] The cold-pressed blank is placed in a sintering furnace and heated to 1250°C under a hydrogen protective atmosphere, and held at that temperature for 3 hours for sintering.

[0047] After sintering, precision grinding is performed to ensure dimensional accuracy and surface finish.

[0048] The overall thickness of the furnace core burner head 34 is set at 2.5–3.5 mm. If the thickness is too thin, the structural strength will be insufficient; if it is too thick, it will affect heat transfer and oil absorption efficiency. The burner head has uniformly distributed 20–80 μm small pores formed by sintering, with a porosity of 40%–50%. This pore size can adsorb high flash point alcohol oil through capillary action, while allowing air circulation to promote complete combustion. 2–4 mm flame outlet holes are machined on the outer cylindrical surface and top of the burner head through drilling. The flame outlet holes on the outer cylindrical surface are evenly distributed along the circumference, and the flame outlet holes on the top are distributed in concentric circles. The flame outlet holes are both the combustion outlet for high flash point alcohol oil and the ignition port. Ignition can be carried out from any flame outlet hole, ensuring convenient ignition. The furnace core burner head 34, prepared by specific materials and processes, combines structural strength, high temperature resistance, and oil absorption and combustion performance. The parameter design of the small pores and flame outlet holes can achieve micro-volume and uniform combustion of high flash point alcohol oil, achieving energy-saving effects.

[0049] In one specific embodiment, the oil-immersed sleeve 32 is a cylindrical sleeve made of 304 stainless steel. The side wall of the sleeve has elongated perforations. These perforations balance the air pressure inside and outside the sleeve, preventing negative pressure caused by a drop in the oil level inside the sleeve, which would affect the adsorption and transport of the high flash point alcohol oil. They also prevent oil overflow. The top of the oil-immersed sleeve 32 is sealed to the bottom of the second furnace core base 38 with high-temperature resistant sealant (temperature resistance above 800℃), ensuring no oil leakage at the joint. The bottom of the sleeve is connected to the oil outlet pipe of the oil storage tank 12 via a flange. The interior of the oil-immersed sleeve 32 is filled with… The high-purity ceramic fiber oil-absorbing cotton, the same as that used in the second furnace core base 38, is filled by a press-fitting method to ensure a tight fit with the inner wall of the sleeve and the bottom of the second furnace core base 38. The height of the oil-absorbing cotton is the same as that of the sleeve, and the bottom contacts the outlet of the oil pipeline of the oil storage tank 12. It can directly absorb the high flash point alcohol oil in the oil storage tank 12 and transport it upward to the oil-absorbing cotton inside the second furnace core base 38 through capillary action. The structural design of the oil-immersed sleeve 32 can ensure the stable adsorption and transportation of high flash point alcohol oil, avoid oil leakage or transportation interruption, and at the same time, the setting of the long strip punch balances the air pressure and improves the stability of oil supply.

[0050] In one specific embodiment, the air inlet pipe 37 is made of high-pressure fluororubber tubing. This material can withstand high temperatures of 150°C and pressures of 1.0 MPa, and is resistant to oil corrosion. It is suitable for transporting compressed air in environments where it is in long-term contact with high flash point alcohol oil. One end of the air inlet pipe 37 is sealed to the external threaded interface of the air inlet base 33 to ensure no air leakage. The other end of the air inlet pipe 37 extends to the regulating valve 17 on the side of the table body 1 and is sealed to the outlet end of the regulating valve 17 by a clamp. In actual use, the compressed air in the air storage chamber 13 is regulated by the regulating valve 17 and then transported to the air inlet base 33 through the air inlet pipe 37, then enters the air chamber 35, and finally overflows from the vent hole of the air outlet surface 36. It mixes with the high flash point alcohol oil transported to the burner head 34 by the oil-absorbing cotton of the second furnace core base 38, promoting complete combustion. The high-pressure and high-temperature resistant air inlet pipe 37 achieves stable delivery of compressed air, and the sealed connection ensures no leakage, providing a stable air source for flame hardness adjustment.

[0051] In one specific embodiment, the main body of the oil filling sight glass 4 is made of borosilicate glass (temperature resistance above 300℃, light transmittance ≥90%), which can withstand long-term immersion in high flash point alcohol oil in the oil storage tank 12 and facilitates observation of oil volume; the metal interface of the sight glass is made of 304 stainless steel to ensure corrosion resistance; the oil filling sight glass 4 has a cylindrical structure with scale lines on its side wall, which are processed by laser engraving, making them clear and wear-resistant; the top of the sight glass has an external thread and a matching sealing cap, which is connected to the sight glass by threads to ensure a leak-free seal; the bottom of the oil filling sight glass 4 is connected to the top of the oil storage tank 12 through a threaded interface. An oil-resistant sealing ring is provided at the opening, and the axis of the sight glass is parallel to the axis of the oil storage tank 12 to ensure that the oil level in the sight glass is consistent with that in the oil storage tank 12. Users can directly observe the actual amount of oil in the oil storage tank 12 through the sight glass. When high flash point alcohol oil needs to be added, unscrew the sealing cap and align the oil outlet of the oil can with the top opening of the oil filling sight glass 4 to add oil. During the filling process, observe the oil level through the scale line to avoid exceeding the maximum scale line. After filling, tighten the sealing cap to prevent oil evaporation or leakage. The oil filling sight glass 4 has both filling and observation functions. It has a simple structure and is easy to operate, avoiding the drawback of traditional stoves that require the cover to be removed to add or observe the oil level.

[0052] In one specific embodiment, one end of the external miniature air inlet 16 is connected to the air storage chamber 13, and the other end of the air inlet is an open interface for connecting to the air outlet of an external air pump (the external air pump is a small air compressor with a supply pressure of 0.15-0.2 MPa and a supply volume of 5 L / min). It can also be used as an air inlet connected to the air outlet of a brushless fan. When the stove is used for a long time in a fixed place such as a restaurant kitchen or canteen, the air outlet of the external air pump is connected to the external miniature air inlet 16. After the air pump is started, compressed air can be continuously delivered to the air storage chamber 13. At this time, there is no need to use a manual air pump 19, and the pressure in the air storage chamber 13 can be monitored in real time by a pressure gauge 18. When the pressure reaches 0.2 MPa, the air pump automatically stops (the air pump is equipped with a pressure switch), and automatically starts when the pressure is lower than 0.035 MPa, so as to automatically maintain the pressure of the air storage chamber 13 and ensure that the stove burns continuously and stably.

[0053] Working principle: The oil storage tank 12 of the table body 1 stores high flash point alcohol oil. The alcohol oil flows into the oil-immersed sleeve 32 of the furnace core 3 through the pipeline. After the ceramic fiber oil-absorbing cotton inside the oil-immersed sleeve 32 absorbs the alcohol oil, it is transported upward to the ceramic fiber oil-absorbing cotton inside the second furnace core base 38 through capillary action. The second furnace core base 38 and the furnace core burner head 34 are sintered together. The furnace core burner head 34 is filled with small pores. The alcohol oil in the oil-absorbing cotton further permeates through the pores to the outer cylindrical surface of the burner head and the flame outlet at the top, providing a stable oil source for combustion.

[0054] The gas storage chamber 13 is manually inflated by an air pump 19 or supplied with air by an external micro air inlet 16 connected to an air pump. The pressure gauge 18 monitors the pressure inside the chamber in real time. After the flow rate of the compressed air in the gas storage chamber 13 is adjusted by the regulating valve 17, it is delivered to the air inlet base 33 at the bottom of the second furnace core base 38 through the air inlet pipe 37, and then enters the central air chamber 35 inside the second furnace core base 38. The compressed air overflows evenly from the vent holes of the air outlet surface 36 on the outer wall of the air chamber 35 and mixes with the alcohol oil at the flame outlet of the furnace core burner head 34 to aid combustion and adjust the flame hardness. When the regulating valve 17 is opened wider, the air volume increases and the flame is stronger and harder, and vice versa.

[0055] When ignited, the alcohol oil at any of the flame outlets of the burner head 34 can be directly ignited to form a stable flame. Air is introduced through the air inlet pipe 21 of the cooking utensil support 2, and the air intake adjustment ring 22 is driven by the adjustment rod 25 to change the air intake volume and control the flame size (a larger air intake results in a stronger flame, and vice versa). At the same time, the quartz glass flame concentrator ring 23 concentrates the central flame, and the high-temperature resistant metal flame concentrator ring 24 concentrates the outer flame to reduce heat loss and ensure that the heat is concentrated and transferred to the bottom of the cooking utensil for efficient combustion. When the flame is extinguished, the adjustment valve 17 is closed to cut off the gas supply, and the flame is extinguished naturally without any risk of residual flame.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safe, environmentally friendly, and energy-saving stove with a powder-sintered furnace core for use with high flash point alcohol oil, characterized in that: Includes table body (1), cooking utensil support (2), stove core (3) and oil filling sight glass (4); The bottom of the table body (1) is symmetrically provided with multiple table stove rubber pads (11). The table body (1) is provided with an oil storage tank (12) and a gas storage tank (13). The table body (1) is provided with an oil drain port (14), a drain port (15), an external micro air inlet (16), a regulating valve (17), a pressure gauge (18) and an air pump (19). The inlet end of the regulating valve (17) is connected to the gas storage tank (13). The cooking utensil support (2) is located on the top of the table body (1). The cooking utensil support (2) includes an air inlet pipe (21), an air inlet adjustment ring (22), a quartz glass heat-gathering ring (23), a high-temperature resistant metal heat-gathering ring (24), and an adjustment rod (25). The furnace core (3) is located on the top of the table body (1) and inside the cooking utensil support (2). The furnace core (3) includes a first furnace core base (31), an oil-immersed sleeve (32), an air inlet base (33), a furnace core burner (34), an air chamber (35), an air outlet surface (36), an air inlet pipe (37), and a second furnace core base (38). The oil filling sight glass (4) is located on the table body (1). The second furnace core base (38) is nested inside the first furnace core base (31) and is adapted to the first furnace core base (31). The second furnace core base (38) and the furnace core burner head (34) are integrally formed by high-temperature sintering. The gas cavity (35) is a hollow structure in the center and is located inside the second furnace core base (38). The gas outlet surface (36) is the outer wall of the gas cavity (35) and is covered with ventilation holes. The air inlet base (33) is located at the bottom of the second furnace core base (38) and is connected to the gas cavity (35). The oil-immersed sleeve (32) is located on the outer side of the bottom of the second furnace core base (38). The oil-immersed sleeve (32) is connected to the oil storage tank (12). One end of the air inlet pipe (37) is sealed to the air inlet base (33), and the other end of the air inlet pipe (37) passes through the table body (1) and is connected to the other end of the regulating valve (17).

2. The powder sintering stove core safety ring environmental protection energy saving stove of high flash point alcohol oil use according to claim 1, it is characterized in being: The oil drain port (14) is located at the bottom of the table body (1) and is connected to the oil storage tank (12). The drain outlet (15) is located at the bottom of the table body (1) and is connected to the air storage tank (13). The external micro air inlet (16) is located at the bottom of the table body (1) and is connected to the air storage tank (13). The air pressure gauge (18) is located on the side of the table body (1) and is connected to the air storage tank (13). The air pump (19) is located on the side of the table body (1) and is connected to the air storage tank (13). The regulating valve (17) is located on the side of the table body (1).

3. The powder sintering stove core safety ring environmental protection energy saving stove of high flash point alcohol oil use according to claim 1, characterized in that: The air inlet pipe (21) is a ring-shaped hollow structure. The bottom of the air inlet pipe (21) is connected to the inside of the table body (1). The air inlet adjustment ring (22) is nested inside the air inlet pipe (21). The air inlet adjustment ring (22) is threaded to one end of the adjustment rod (25). The other end of the adjustment rod (25) extends to the outside of the cooking utensil support (2). The quartz glass fire-gathering ring (23) is nested in the middle of the cooking utensil support (2). The high-temperature resistant metal fire-gathering ring (24) is located on the upper part of the cooking utensil support (2).

4. The powder sintering stove core safety ring environmental protection energy saving stove of high flash point alcohol oil use according to claim 1, characterized in that: The first furnace core base (31) is located on the top of the table body (1), and the first furnace core base (31) is a metal sleeve structure.

5. The powder sintering stove core safety ring environmental protection energy saving stove of high flash point alcohol oil use according to claim 1, characterized in that: The second furnace core base (38) is filled with ceramic fiber oil-absorbing cotton inside and outside the gas chamber (35).

6. The powder sintering stove core safety ring environmental protection energy saving stove of high flash point alcohol oil use according to claim 5, wherein: The furnace core burner head (34) is made of nickel-based alloy powder through high-temperature sintering in a mold. The furnace core burner head (34) has a thickness of 2.5 to 3.5 mm. The furnace core burner head (34) is filled with small pores of 20 to 80 μm inside. The outer surface and top of the furnace core burner head (34) are uniformly provided with flame outlet holes of 2 to 4 mm.

7. A safe, environmentally friendly, and energy-saving stove with a powder sintering furnace core for high flash point alcohol oil as described in claim 1, characterized in that: The oil-immersed sleeve (32) is sealed to the second furnace core base (38). The oil-immersed sleeve (32) has long strip punches on its outside and is filled with ceramic fiber oil-absorbing cotton inside.

8. A safe, environmentally friendly, and energy-saving stove with a powder sintering furnace core for high flash point alcohol oil as described in claim 1, characterized in that: The oil filling sight glass (4) is made of transparent glass and has scale lines. One end of the oil filling sight glass (4) is connected to the oil storage tank (12), and the other end of the oil filling sight glass (4) is provided with a sealing cap.

9. The powder sintering stove core safety ring environmental protection energy saving stove of high flash point alcohol oil use according to claim 2, it is characterized by: One end of the external micro air inlet (16) is connected to the air storage chamber (13), and the other end is used to connect to the external air pump.

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