An alcohol-oil fuel combustion heating furnace

Abstract

This utility model proposes an alcohol-oil fuel combustion heater, including a furnace body, a furnace core, and a support frame. The support frame is located on the top of the furnace body, and the bottom of the furnace body has support legs. The furnace body includes an outer shell and an oil storage tank, with the oil storage tank rotatably disposed inside the outer shell. The outer shell has an oil filling port communicating with the oil storage tank. The top of the outer shell has multiple first combustion ports spaced circumferentially. The top of the oil storage tank has second combustion ports corresponding to the number and position of the first combustion ports. The bottom of the outer shell and the oil storage tank respectively have first and second ventilation ports corresponding to the number and position of the first combustion ports. The furnace core corresponds to the number and position of the second ventilation ports. The furnace core includes a metal felt tube disposed inside the oil storage tank and communicating with the second ventilation ports. The top sides of the outer shell and the oil storage tank have first and second side air vents corresponding to the number and position of the second ventilation ports. This application can ensure complete combustion of fuel, has low requirements for fuel quality and type, and uses a metal felt tube as the furnace core, which easily absorbs fuel and is not easily worn out, resulting in good combustion effect.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, specifically to an alcohol-oil fuel combustion heating furnace. Background Technology

[0002] Alcohol-oil fuel is a new type of liquid fuel made primarily of alcohols such as ethanol, mixed with other additives (such as combustion improvers). It is mainly used to replace traditional fuels such as diesel, liquefied petroleum gas, and coal, and is characterized by its cleanliness and renewability, meeting environmental protection requirements. Alcohol-oil fuel combustion heaters are heating devices that use alcohol-oil fuel as their energy source. They achieve heating primarily through the heat released from burning alcohol-oil and are widely used in industrial production, commercial heating, and catering kitchens.

[0003] Currently, the use of alcohol-oil fuel combustion heaters mainly involves placing alcohol-oil fuel in the heater's own fuel tank and igniting the fuel-laden core to achieve heating. However, existing heaters have certain shortcomings. First, alcohol-oil fuel has a complex composition, with variations in raw material ratios and additives among different manufacturers. Furthermore, inferior fuels exist on the market, and existing heaters often struggle to fully burn these fuels, leading to unstable flames, black smoke, and other problems that affect performance and pollute the environment. Secondly, many existing heaters use cotton or asbestos as the core material. Cotton cores are consumable materials that are consumed after ignition and cannot be reused. The flame also diminishes as the cotton core wears down, and burning cotton cores produces odors and volatile organic compounds. Utility Model Content

[0004] To address the problems in the background art, this utility model proposes an alcohol-oil fuel combustion heating furnace, comprising a furnace body, a furnace core, and a support frame. The support frame is disposed on the top of the furnace body, and the bottom of the furnace body is provided with support legs. The furnace body includes an outer shell and an oil storage tank, with the oil storage tank rotatably disposed within the outer shell. The outer shell has an oil filling port communicating with the oil storage tank. The top of the outer shell has a plurality of first combustion ports spaced circumferentially. The top of the oil storage tank has second combustion ports corresponding to the number and position of the first combustion ports. The bottom of the outer shell and the oil storage tank respectively have first ventilation ports and second ventilation ports corresponding to the number and position of the first combustion ports. The furnace core corresponds to the number and position of the second ventilation ports. The furnace core includes a metal felt tube disposed within the oil storage tank and communicating with the second ventilation ports. The top sides of the outer shell and the oil storage tank respectively have first side air vents and second side air vents circumferentially, with the number and position of the first side air vents corresponding to the number and position of the second side air vents.

[0005] Preferably, the number and position of the second side air vents correspond to the number of metal felt cylinders.

[0006] Preferably, a heat insulation cavity is provided between the outer side wall of the oil tank and the inner side wall of the outer shell, and a heat insulation layer is provided in the heat insulation cavity. The heat insulation layer is spaced apart from the outer side wall and the oil tank side wall respectively.

[0007] The top and bottom of the outer casing are respectively provided with heat dissipation vents, which are connected to the heat insulation cavity.

[0008] Preferably, the top of the outer casing is provided with a recess, and the oil inlet is located in the recess.

[0009] Preferably, the furnace core further includes a ventilation pipe and a sleeve. The bottom end of the ventilation pipe is fixedly connected to the bottom wall of the oil storage tank. The second ventilation port is located inside the ventilation pipe. The metal felt cylinder is sleeved outside the ventilation pipe, and the sleeve is sleeved outside the metal felt cylinder. The top end of the metal felt cylinder is higher than the top end of the ventilation pipe and the sleeve. The bottom side of the sleeve is provided with multiple through grooves along the circumference.

[0010] Preferably, the top of the metal felt cylinder is flush with the top surface of the oil tank, and when the oil tank contains oil fuel, the oil fuel level is not higher than the top of the sleeve, the top of the ventilation pipe, and the position of the second side air vent.

[0011] Preferably, the bottom of the outer casing is provided with a first annular rail, and the bottom of the oil tank is provided with a second annular rail. The second annular rail is slidably disposed on the first annular rail, and the first annular rail and the second annular rail are coaxially arranged.

[0012] Preferably, the support frame includes a heat-concentrating ring and multiple pot racks, the pot racks are fixedly connected to the heat-concentrating ring, the multiple pot racks are arranged circumferentially along the heat-concentrating ring, and the heat-concentrating ring has an flared structure with the upper end flared outward.

[0013] The top of the outer shell is provided with a third annular rail, the heat-gathering ring is coaxially arranged with the third annular rail, the axis of the third annular rail is collinear with the rotation axis of the oil storage tank, the bottom end of the pot rack is provided with a slot that matches the third annular rail, and the outer periphery of the third annular rail is located in the slot.

[0014] Preferably, the outer casing includes a first upper cover, a housing, and a bottom plate, with the first upper cover and the bottom plate respectively disposed at the top and bottom of the housing. The oil storage tank includes an oil tank and a second upper cover, with the second upper cover disposed at the top of the oil tank. The oil storage tank is located inside the housing and between the first upper cover and the bottom plate.

[0015] The first combustion port, the first ventilation port, and the first side air vent are all located on the first upper cover, and the second combustion port, the second ventilation port, and the second side air vent are all located on the second upper cover.

[0016] Preferably, a first heat insulation pad is provided between the outer periphery of the first upper cover and the shell, and a second heat insulation pad is provided between the outer periphery of the bottom plate and the shell.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model uses a cylindrical structure made of metal felt as the furnace core. The felt structure of the metal felt can better absorb oil fuel, making the furnace core easy to ignite and ensuring combustion effect. At the same time, the metal furnace core is not easily consumed by combustion, and will not produce volatile substances or odors. It has a long service life and is not easy to pollute the environment.

[0019] 2. This utility model is equipped with a first side air inlet and a second side air inlet, which can improve the ventilation effect inside the furnace, thereby ensuring more complete combustion of the oil fuel when the furnace core is ignited. Traditional heating furnaces are prone to insufficient combustion of fuel due to differences in fuel quality or composition. For example, when using relatively inferior oil fuel, problems such as unstable flame and black smoke often occur. This utility model can ensure more complete combustion of fuel, and even when using relatively inferior oil fuel, the above-mentioned problems such as black smoke are not likely to occur. It has good performance, improves the range of fuel selection, increases the flexibility of use, and reduces the cost of use.

[0020] 3. The oil storage tank of this utility model is rotatably installed inside the outer shell, and the outer shell and the oil storage tank are respectively provided with a number of corresponding first combustion ports and second combustion ports. When the oil storage tank rotates, the positions of the first combustion ports and second combustion ports will be staggered, changing the communication area of ​​the two combustion ports, thereby realizing the adjustment of the heating flame size. In addition, the first combustion ports and second combustion ports of this utility model are arranged in a circle. When the oil storage tank rotates, multiple sets of first combustion ports and second combustion ports can be synchronously and evenly staggered, thereby ensuring the uniformity of flame size adjustment.

[0021] At the same time, the first ventilation opening, the second ventilation opening, the first side air opening, and the second side air opening can also adjust the connection area as the oil tank rotates, change the ventilation effect, realize the synchronous adjustment of ventilation effect and combustion port size, and synergistically improve the effect of flame size adjustment.

[0022] 4. This utility model is provided with a heat insulation cavity and a heat insulation layer. The heat insulation layer and heat insulation cavity can greatly reduce the heat transfer from the oil storage tank to the outer shell, thereby reducing the possibility of the outer shell generating high temperature, avoiding burns to personnel, and improving the safety of use. At the same time, this utility model is also provided with a heat dissipation port connected to the heat insulation cavity. The heat dissipation port accelerates the heat dissipation of the heat insulation cavity, further reducing the possibility of the outer shell heating up and achieving the anti-scalding effect.

[0023] 5. This utility model is provided with a first annular rail and a second annular rail. The first annular rail and the second annular rail cooperate to limit the rotation path of the oil tank and improve the stability of the rotation of the oil tank.

[0024] This invention also includes a third annular rail, through which the pot rack can engage with the third annular rail via slots. The cooperation between the third annular rail and the slots of multiple pot racks enables the placement and positioning of the support frame, ensuring that multiple combustion ports are located in the center of the support frame and guaranteeing the heating effect when the pot is placed on the pot rack. At the same time, each annular rail enhances the structural integrity.

[0025] 6. The oil filling port of this utility model is set in the sink in the top of the shell. When filling, the oil fuel can be poured into the sink without strictly aligning it with the oil filling port. This can effectively prevent the oil fuel from overflowing due to misalignment between the oil filling tool and the oil filling port, thereby effectively avoiding fuel waste and environmental pollution. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0028] Figure 3 This is a side sectional view of the overall structure of this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0030] Figure 5 This is a schematic diagram of the first upper cover structure of this utility model;

[0031] Figure 6 This is a schematic diagram of the shell structure of this utility model;

[0032] Figure 7 This is a schematic diagram of the base plate structure of this utility model;

[0033] Figure 8 This is a schematic diagram of the second upper cover structure of this utility model;

[0034] Figure 9 This is a schematic diagram of the fuel tank structure of this utility model;

[0035] Figure 10 This is a schematic diagram of the sleeve structure of this utility model.

[0036] The diagram is labeled as follows: 1. Outer shell; 101. First top cover; 1011. Third annular rail; 102. Shell; 1021. Adjustment groove; 103. Base plate; 1031. First annular rail; 2. Oil tank; 21. Oil tank; 212. Second annular rail; 22. Second top cover; 3. Furnace core; 31. Ventilation pipe; 32. Sleeve; 321. Through groove; 33. Metal felt tube; 4. Oil inlet; 41. Settling groove; 5. First combustion port; 6. Second combustion port; 7. First side air vent; 8. Second side air vent; 9. Support leg; 10. Handle; 11. Heat-concentrating ring; 12. Pot rack; 13. First ventilation port; 14. Second ventilation port; 15. Adjustment handle; 16. Heat dissipation port; 17. Insulation cavity; 18. Insulation layer; 19. First insulation pad; 20. Second insulation pad. Detailed Implementation

[0037] To make this utility model clearer and more understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the given embodiments are only one of the implementation methods and do not represent all embodiments.

[0038] In this article, terms such as "inner," "outer," "upper," and "lower" are established based on the positional relationships shown in the attached drawings. Depending on the attached drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection.

[0039] Combined with appendix Figure 1 - Appendix Figure 10 A methanol-oil fuel combustion heating furnace includes a furnace body, a furnace core 3, and a support frame. The support frame is located on the top of the furnace body and is used to place the stove to be heated. The bottom of the furnace body is provided with support legs 9, which are used to support the heating furnace, facilitate the placement of the heating furnace, and also to create a gap between the furnace body and the work surface, so that the ventilation opening at the bottom of the furnace body can better ventilate.

[0040] The furnace body includes an outer shell 1 and an oil storage tank 2. The oil storage tank 2 is rotatably disposed inside the outer shell 1. The outer shell 1 is provided with an oil injection port 4 communicating with the oil storage tank 2. Oil fuel is injected into the oil storage tank 2 through the oil injection port 4. The top of the outer shell 1 is provided with a plurality of first combustion ports 5 distributed circumferentially. The top of the oil storage tank 2 is provided with second combustion ports 6 corresponding to the number and position of the first combustion ports 5. The bottom of the outer shell 1 and the oil storage tank 2 are respectively provided with first ventilation ports 13 and second ventilation ports 14 corresponding to the number and position of the first combustion ports 5. The furnace core 3 corresponds to the number and position of the second ventilation ports 14. The furnace core 3 includes a metal felt tube 33, which is disposed inside the oil storage tank 2 and communicates with the second ventilation ports 14. The top sides of the outer shell 1 and the oil storage tank 2 are respectively provided with first side air vents 7 and second side air vents 8 circumferentially, and the number and position of the first side air vents 7 and the second side air vents 8 correspond. When injecting oil, the oil fuel level is kept below the height of the side air vents to prevent fuel from overflowing from the side air vents.

[0041] Specifically, the first combustion port 5 is fan-shaped, and the second combustion port 6 is the same size and shape as the first combustion port 5. The fan shape can ensure the uniformity of the relative position change of the two combustion ports when the first combustion port 5 and the second combustion port 6 are staggered, thereby ensuring the flame adjustment effect; the first side air vent 7 is a long strip-shaped slot opened along the circumference of the outer shell 1, and the second side air vent 8 is the same size and shape as the first side air vent 7.

[0042] Specifically, an adjusting handle 15 is fixed to one side of the oil tank 2, and an adjusting groove 1021 is provided on one side of the outer shell 1. The heat insulation layer 18 is provided with another adjusting groove 1021 corresponding to the position of the adjusting groove 1021. The end of the adjusting handle 15 away from the oil tank 2 extends through the two adjusting grooves 1021 to the outside of the outer shell 1. Rotating the adjusting handle 15 rotates the oil tank 2, achieving the flame adjustment effect, which is simple and convenient to operate. The adjusting groove 1021 is opened around the outer shell 1 to limit the rotation range of the adjusting handle 15. When the adjusting handle 15 is located at one end of the adjusting groove 1021, the positions of the first combustion port 5 and the second combustion port 6 are completely corresponding and in a fully connected state; when the adjusting handle 15 is located at the other end of the adjusting groove 1021, the second combustion port 6 is located between the two first combustion ports 5, so that the two combustion ports are in a completely disconnected state.

[0043] Specifically, the metal felt cylinder 33 is formed by: randomly interlacing multiple metal wires and rolling them into a metal felt sheet, and then rolling the metal felt sheet into a cylinder to form the metal felt cylinder 33. The metal wires used in the metal felt cylinder 33 preferably have a diameter of 40-100 μm.

[0044] Specifically, the number and position of the second side air vent 8 correspond to the number of metal felt cylinders 33, that is, each metal felt cylinder 33 has one second side air vent 8 on one side.

[0045] Specifically, a heat insulation cavity 17 is provided between the outer wall of the oil tank 2 and the inner wall of the outer shell 1. A heat insulation layer is provided within the heat insulation cavity 17, and the heat insulation layer maintains a distance from both the side wall of the outer shell 1 and the side wall of the oil tank 2. The heat insulation layer can be made of heat insulation cotton. The heat insulation cavity 17 and the heat insulation layer prevent heat from being transferred from the oil tank 2 to the outer shell 1 during heating, avoiding burns to personnel and improving safety during use.

[0046] More specifically, the top and bottom of the outer shell 1 are respectively provided with heat dissipation vents 16, which are connected to the heat insulation cavity 17. The heat in the heat insulation cavity 17 can be dissipated to the outside of the heating furnace, further preventing the furnace body from overheating. More specifically, there are multiple heat dissipation vents 16, which are evenly spaced along the circumference of the outer shell 1, with the number and position of the heat dissipation vents 16 located at the top of the outer shell 1 corresponding to the number and position of the heat dissipation vents 16 located at the bottom of the outer shell 1.

[0047] Specifically, the top of the outer casing 1 is provided with a settling groove 41, and the oil inlet 4 is opened in the settling groove 41. More specifically, the oil inlet 4 is located at the center of the outer casing 1. When adding oil, the oil fuel can be poured into the settling groove 41 or the oil inlet 4, without the need to strictly align the oil inlet 4, which can improve the convenience of adding oil and avoid fuel leakage caused by misalignment between the oil adding device (such as the mouth of the oil storage tank) and the oil inlet 4.

[0048] Specifically, the furnace core 3 further includes a ventilation pipe 31 and a sleeve 32. The bottom end of the ventilation pipe 31 is fixedly connected to the bottom wall of the oil storage tank 2. The second ventilation port 14 is located inside the ventilation pipe 31. The metal felt cylinder 33 is sleeved outside the ventilation pipe 31, and the sleeve 32 is sleeved outside the metal felt cylinder 33. The top end of the metal felt cylinder 33 is higher than the top ends of the ventilation pipe 31 and the sleeve 32. The bottom side of the sleeve 32 has multiple through grooves 321 along its circumference. The through grooves 321 are used to allow the metal felt cylinder 33 and the oil storage tank 2 to communicate, facilitating the absorption of oil fuel by the metal felt cylinder 33. Air can enter the ventilation pipe 31 from the first ventilation port 13 and the second ventilation port 14. More specifically, the bottom end of the ventilation pipe 31 is welded and fixed to the oil storage tank 2. The sleeve 32 is used to fix the metal felt cylinder 33 and, in conjunction with the ventilation pipe 31, limits the combustible portion of the metal felt cylinder 33 (i.e., the length of the top end of the metal felt cylinder 33 outside the ventilation pipe 31 and the sleeve 32). The insertion and installation method of the metal felt tube 33 facilitates the disassembly and assembly of the metal felt tube 33, thereby facilitating the replacement or maintenance of the metal felt tube 33.

[0049] Specifically, the top of the metal felt cylinder 33 is flush with the top surface of the oil storage tank 2 to avoid interference between the metal felt cylinder 33 and the relative rotation of the oil storage tank 2 and the outer shell 1, and to ensure that the combustion flame is located at the combustion port and easily ignites the furnace core 3. When the oil storage tank 2 contains liquid fuel, the liquid fuel level is not higher than the top of the sleeve 32, the top of the ventilation pipe 31, and the position of the second side air vent 8. This prevents fuel from overflowing from the side air vents and avoids the fuel in the oil storage tank 2 from being ignited due to the flame spreading when the top of the furnace core 3 is ignited, thus improving the safety and stability of use.

[0050] Specifically, the bottom of the outer casing 1 is provided with a first annular rail 1031, and the bottom of the oil tank 2 is provided with a second annular rail 212. The second annular rail 212 is slidably mounted on the first annular rail 1031, and the first annular rail 1031 and the second annular rail 212 are coaxially arranged. The first annular rail 1031 and the second annular rail 212 cooperate to restrict the rotation path of the oil tank 2, thereby improving the stability of the rotation of the oil tank 2 and improving the structural integrity.

[0051] More specifically, the portion of the first annular rail 1031 located on the top side of the bottom wall of the outer casing 1 and the portion of the second annular rail 212 located on the top side of the bottom wall of the oil tank 2 are upward protrusions, and the portion of the first annular rail 1031 located on the bottom side of the bottom wall of the outer casing 1 and the portion of the second annular rail 212 located on the bottom side of the bottom wall of the oil tank 2 are upward recessed grooves. When the two annular rails are engaged, the protruding portion of the first annular rail 1031 is placed in the groove of the second annular rail 212.

[0052] Specifically, the support frame includes a heat-concentrating ring 11 and multiple pot racks 12. The pot racks 12 are fixedly connected to the heat-concentrating ring 11, and the multiple pot racks 12 are arranged circumferentially along the heat-concentrating ring 11. The heat-concentrating ring 11 has an flared structure with an outward expansion at the upper end. The flared structure can better concentrate heat and improve the heating effect.

[0053] The outer shell 1 has a third annular rail 1011 on its top. The heat-concentrating ring 11 is coaxially arranged with the third annular rail 1011, and the axis of the third annular rail 1011 is collinear with the rotation axis of the oil storage tank 2. The bottom end of the pot frame 12 has a slot that matches the third annular rail 1011, and the outer periphery of the third annular rail 1011 is located in the slot. When placing the support frame, simply place the slot at the bottom end of the pot frame 12 on the top of the outer periphery of the third annular rail 1011 to achieve the positioning of the support frame. Furthermore, the third annular rail 1011 improves the structural integrity.

[0054] More specifically, the sidewall of the heat-concentrating ring 11 has a multi-layered corrugated structure arranged sequentially from top to bottom, which can improve the structural strength of the heat-concentrating ring 11. The top of the pot rack 12 has raised textures, which can increase the friction when in contact with the pot and improve the stability of the pot.

[0055] Specifically, the outer shell 1 includes a first upper cover 101, a shell 102, and a bottom plate 103. The first upper cover 101 and the bottom plate 103 are respectively disposed at the top and bottom of the shell 102. The oil storage tank 2 includes an oil tank 21 and a second upper cover 22. The second upper cover 22 is disposed at the top of the oil tank 21. The oil storage tank 2 is located inside the shell 102 and between the first upper cover 101 and the bottom plate 103.

[0056] The first combustion port 5, the first ventilation port 13 and the first side air vent 7 are all located on the first upper cover 101, and the second combustion port 6, the second ventilation port 14 and the second side air vent 8 are all located on the second upper cover 22.

[0057] The outer shell 1 is divided into a first upper cover 101, a shell 102 and a bottom plate 103, and the oil storage tank 2 is divided into a second upper cover 22 and an oil tank 21, which improves the assembly degree of the heating furnace and facilitates the maintenance of the heating furnace.

[0058] More specifically, a plurality of threaded cylinders are fixed inside the housing 102 near the outer side. These threaded cylinders are evenly spaced along the circumference of the housing 102. The first upper cover 101 and the base plate 103 are respectively provided with connecting holes corresponding to the number and position of the threaded cylinders. Bolts are threaded through these connecting holes and connected to the threaded cylinders, thus fixing the base plate 103 and the first upper cover 101 to the housing 102. More specifically, the threaded cylinders are located within the heat insulation cavity 17.

[0059] The first top cover 101 and the second top cover 22 each have an upwardly protruding columnar structure in the middle, with the columnar structure of the second top cover 22 located inside the columnar structure of the first top cover 101. The first combustion port 5 and the fuel inlet 4 are located at the top of the columnar structure of the first top cover 101, and the first side air vent 7 is located on the side of the columnar structure of the first top cover 101. The second combustion port 6 and the through hole for connecting the fuel tank 21 and the fuel inlet 4 are located at the top of the columnar structure of the second top cover 22, and the second side air vent 8 is located on the side of the columnar structure of the second top cover 22. The top ends of the ventilation pipe 31 and the sleeve 32 are located above the top surface of the fuel tank 21 and inside the columnar structure of the second top cover 22. The third annular rail 1011 and the heat dissipation vent 16 at the top of the outer casing 1 are located on the first upper cover 101. The first annular rail 1031, the first vent 13, and the heat dissipation vent 16 at the bottom of the outer casing 1 are located on the bottom plate 103. The second annular rail 212 and the second vent 14 are located on the bottom wall of the oil tank 21.

[0060] Specifically, a first heat insulation pad 19 is provided between the outer periphery of the first upper cover 101 and the housing 102, and a second heat insulation pad 20 is provided between the outer periphery of the bottom plate 103 and the housing 102. The first heat insulation pad 19 and the second heat insulation pad 20 can prevent heat from being transferred to the outer shell 1.

[0061] Specifically, the outer wall of the outer casing 1 is fixed with two symmetrically distributed handles 10, which facilitate the user to pick up and put down the heating furnace.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will be able to make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A methanol-oil fuel combustion heating furnace, comprising a furnace body, a furnace core (3), and a support frame, wherein the support frame is disposed on the top of the furnace body, and the bottom of the furnace body is provided with support legs (9), characterized in that: The furnace body includes an outer shell (1) and an oil storage tank (2). The oil storage tank (2) is rotatably disposed inside the outer shell (1). The outer shell (1) is provided with an oil inlet (4) communicating with the oil storage tank (2). The top of the outer shell (1) is provided with a plurality of first combustion ports (5) distributed circumferentially. The top of the oil storage tank (2) is provided with second combustion ports (6) corresponding to the number and position of the first combustion ports (5). The bottom of the outer shell (1) and the oil storage tank (2) are respectively provided with second combustion ports (6) corresponding to the number and position of the first combustion ports (5). The furnace core (3) has a first ventilation opening (13) and a second ventilation opening (14). The furnace core (3) corresponds to the second ventilation opening (14) in number and position. The furnace core (3) includes a metal felt tube (33). The metal felt tube (33) is set inside the oil storage tank (2) and communicates with the second ventilation opening (14). The top side of the outer shell (1) and the oil storage tank (2) are respectively provided with a first side air vent (7) and a second side air vent (8) along the circumferential direction. The first side air vent (7) and the second side air vent (8) correspond to each other in number and position.

2. The alcohol-oil fuel combustion heating furnace according to claim 1, characterized in that: The second side air vent (8) corresponds in number and position to the metal felt tube (33).

3. The alcohol-oil fuel combustion heating furnace according to claim 1, characterized in that: A heat insulation cavity (17) is provided between the outer side wall of the oil tank (2) and the inner side wall of the outer shell (1). A heat insulation layer is provided in the heat insulation cavity (17). The heat insulation layer is spaced apart from the side wall of the outer shell (1) and the side wall of the oil tank (2). The outer shell (1) is provided with heat dissipation vents (16) at the top and bottom respectively, and the heat dissipation vents (16) are connected to the heat insulation cavity (17).

4. The alcohol-oil fuel combustion heating furnace according to claim 1, characterized in that: The top of the outer casing (1) is provided with a sink (41), and the oil inlet (4) is opened in the sink (41).

5. The alcohol-oil fuel combustion heating furnace according to claim 1, characterized in that: The furnace core (3) also includes a ventilation pipe (31) and a sleeve (32). The bottom end of the ventilation pipe (31) is fixedly connected to the bottom wall of the oil storage tank (2). The second ventilation port (14) is located inside the ventilation pipe (31). The metal felt cylinder (33) is sleeved outside the ventilation pipe (31). The sleeve (32) is sleeved outside the metal felt cylinder (33). The top of the metal felt cylinder (33) is higher than the top of the ventilation pipe (31) and the sleeve (32). The bottom side of the sleeve (32) is provided with multiple through grooves (321) along the circumferential direction.

6. The alcohol-oil fuel combustion heating furnace according to claim 5, characterized in that: The top of the metal felt tube (33) is flush with the top surface of the oil tank (2). When the oil tank (2) contains oil fuel, the oil fuel level is not higher than the top of the sleeve (32), the top of the ventilation pipe (31), and the position of the second side air vent (8).

7. The alcohol-oil fuel combustion heating furnace according to claim 1, characterized in that: The bottom of the outer shell (1) is provided with a first annular rail (1031), and the bottom of the oil tank (2) is provided with a second annular rail (212). The second annular rail (212) is slidably disposed on the first annular rail (1031), and the first annular rail (1031) and the second annular rail (212) are coaxially disposed.

8. The alcohol-oil fuel combustion heating furnace according to claim 1, characterized in that: The support frame includes a heat-concentrating ring (11) and multiple pot racks (12). The pot racks (12) are fixedly connected to the heat-concentrating ring (11). The multiple pot racks (12) are arranged circumferentially along the heat-concentrating ring (11). The heat-concentrating ring (11) has an flared structure with the upper end flared outward. The top of the outer shell (1) is provided with a third annular rail (1011), the heat-gathering ring (11) is coaxially arranged with the third annular rail (1011), the axis of the third annular rail (1011) is collinear with the rotation axis of the oil storage tank (2), the bottom end of the pot rack (12) is provided with a slot that matches the third annular rail (1011), and the outer periphery of the third annular rail (1011) is located in the slot.

9. The alcohol-oil fuel combustion heating furnace according to claim 1, characterized in that: The outer shell (1) includes a first upper cover (101), a shell (102) and a bottom plate (103). The first upper cover (101) and the bottom plate (103) are respectively located at the top and bottom of the shell (102). The oil tank (2) includes an oil tank (21) and a second upper cover (22). The second upper cover (22) is located at the top of the oil tank (21). The oil tank (2) is located inside the shell (102) and between the first upper cover (101) and the bottom plate (103). The first combustion port (5), the first ventilation port (13) and the first side air vent (7) are all located on the first upper cover (101), and the second combustion port (6), the second ventilation port (14) and the second side air vent (8) are all located on the second upper cover (22).

10. The alcohol-oil fuel combustion heating furnace according to claim 9, characterized in that: A first heat insulation pad (19) is provided between the outer periphery of the first top cover (101) and the shell (102), and a second heat insulation pad (20) is provided between the outer periphery of the bottom plate (103) and the shell (102).

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