Smokeless furnace liner structure with secondary combustion function

Abstract

The utility model relates to the technical field of combustion furnaces, in particular to a smokeless furnace liner structure with a secondary combustion function. The furnace comprises a furnace outer container and a furnace inner container arranged in the furnace outer container, a gap is reserved between the furnace outer container and the furnace inner container, a protrusion protruding inwards is arranged in the center of the bottom face of the furnace inner container and is in a cone shape, air inlet holes are evenly formed in the peripheral inclined faces of the protrusion, and the air inlet holes are communicated with the furnace outer container. A plurality of reinforcing convex hulls are further arranged on the periphery of the protrusion, and a plurality of hole grooves are formed in the wall of the lower half portion of the furnace inner container. The combustion furnace has the advantages that the hole grooves are formed in the walls of the upper half portion and the lower half portion of the furnace inner container, one hole groove is used for secondary combustion at the top, the other hole groove is used for sufficient combustion at the bottom, and therefore the combustion furnace is improved, and smoke is reduced; the protrusion is arranged at the bottom, the air inlet holes are formed in the inclined face of the protrusion, air is fed from the inclined face, combustion materials are prevented from being blown upwards, and ash cannot be generated.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion furnaces, in particular to a smokeless furnace inner tank structure with a secondary combustion function. Background Art

[0002] Stoves are still used in some areas and for special purposes. The stoves currently used all use coal blocks and firewood as fuel, which are limited resources. Since the existing stoves only have a single furnace tile that burns once to obtain heat energy, the smoke generated by the coal blocks and firewood during the single combustion process is directly discharged from the chimney. This primary combustion method not only wastes resources, but also increases pollution emissions to the atmosphere, which is not conducive to the current actual requirements of energy conservation and emission reduction.

[0003] Prior art, application number: CN202321078585.X A secondary combustion furnace with a combustion rate adjustment function, which performs secondary combustion by opening a hole groove on the top of the inner barrel, but in the combustion process of this structure, the burning material is not sufficient, so there will still be a small amount of smoke after the secondary combustion through the matching hole groove, and the air intake hole is opened at the bottom, which not only affects the strength of the entire inner barrel, but also when used with a fan, a large amount of wind enters and blows up the burning wood waste;

[0004] Therefore, it is necessary to design a smokeless furnace liner structure with secondary combustion function to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a smokeless furnace liner structure with a secondary combustion function to overcome the above-mentioned shortcomings of the current prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A smokeless stove liner structure with a secondary combustion function comprises a stove outer liner and a stove liner placed in the stove outer liner, a gap is left between the stove outer liner and the stove liner, a protrusion protruding inward is arranged at the center of the bottom surface of the stove liner, and the protrusion is arranged in a cone shape, air inlet holes are evenly opened on the inclined surfaces around the protrusion, and a plurality of reinforcing convex hulls are also arranged around the protrusion, a plurality of hole grooves are opened on the wall of the lower half of the stove liner, and the hole grooves are evenly distributed, and a plurality of secondary combustion air outlet holes are opened on the wall of the upper half of the stove liner.

[0008] Preferably, a through groove is provided at the bottom of the furnace outer shell for use with an air supply system.

[0009] Preferably, a buckle is installed on the inner wall of the upper half of the furnace liner through a nut.

[0010] Preferably, a carbon furnace liner is also hung on the buckle of the furnace liner.

[0011] Preferably, feed openings are provided on the sides of the outer furnace liner and the inner furnace liner, and the feed openings of the outer furnace liner and the inner furnace liner are arranged in concentric circles.

[0012] The beneficial effects of the utility model are as follows: the technical solution provides holes and slots on the walls of the upper and lower parts of the furnace inner tank, one for secondary combustion at the top and one for full combustion at the bottom, thereby improving the combustion furnace and reducing the generation of smoke;

[0013] A protrusion is set at the bottom of the furnace inner tank, and it is in a cone shape, and the air inlet is set on the inclined surface of the protrusion, so the air inlet is also set at an angle. After the air is matched, the air will not be directly fed upward, but from the inclined surface, so as to avoid blowing the combustion material upward and not produce ash;

[0014] A number of reinforcing convex bumps are also arranged on the bottom surface of the furnace inner tank, which not only serve as the combustion contact surface and greatly improve the combustion efficiency, but also can effectively improve the strength of the bottom of the entire furnace inner tank and improve the force bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a smokeless furnace inner tank structure with a secondary combustion function according to the utility model;

[0016] Figure 2 It is a schematic diagram of the bottom surface of a furnace liner structure of a smokeless furnace liner with a secondary combustion function according to the utility model;

[0017] Figure 3 This is a schematic diagram of the implementation of a smokeless furnace inner tank structure with a secondary combustion function according to the utility model;

[0018] Figure 4 It is a schematic diagram of the airflow direction of a smokeless furnace inner tank structure with a secondary combustion function according to the utility model;

[0019] In the figure: 1. furnace outer shell; 11. through groove; 2. furnace inner shell; 21. protrusion; 22. air inlet; 23. reinforcing convex bump; 24. hole groove; 25. secondary combustion air outlet; 26. buckle; 3. gap; 4. carbon furnace shell; 5. feed port. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Reference Figures 1 to 4 , a smokeless furnace inner liner structure with a secondary combustion function, comprising a furnace outer liner 1 and a furnace inner liner 2 placed in the furnace outer liner;

[0023] A gap 3 is left between the outer furnace 1 and the inner furnace 2, and the gap is used for gas flow and provides sufficient oxygen for the internal fuel to burn;

[0024] The bottom of the outer furnace 1 is provided with a through slot 11 for use with the air supply system;

[0025] The bottom center of the furnace inner tank 2 is provided with an inwardly protruding protrusion 21, and the protrusion 21 is provided in a cone shape, and air inlet holes 22 are evenly opened around the protrusion 21, and a plurality of reinforcing convex hulls 23 are also provided around the protrusion 21; the protrusion 21 is used to arch the combustion object placed inside, so that the combustion object has a certain space, increase the contact surface of combustion, and improve the combustion rate; the protrusion 21 is in a cone shape, and the air inlet hole 22 is provided on the inclined surface of the protrusion 21, so the air inlet hole 22 is also inclined, so that after the air intake is matched, the air will not be directly fed upward, but fed from the inclined surface, so as to avoid blowing the combustion material upward and not produce ash;

[0026] The reinforcing convex bump 23 has the same effect, greatly improving the combustion efficiency, and can effectively improve the strength of the bottom of the entire furnace liner 2 and improve the force bearing capacity;

[0027] A plurality of holes 24 are formed on the wall of the lower half of the furnace inner container 2, and the holes 24 are evenly distributed. The combustion-supporting gas entering from the bottom enters the holes 24 from the gap 3 and enters the furnace inner container 2 again, providing the combustion-supporting gas and performing combustion again.

[0028] A plurality of secondary combustion outlet holes 25 are provided on the wall of the upper half of the furnace inner container 2. The combustible gas continues to flow from the gap and flows out from the secondary combustion outlet holes 25. After contacting with the flame, it burns again, thereby realizing secondary combustion. After the first combustion and the secondary combustion, the material will be fully burned and will not generate smoke, thereby realizing smoke-free.

[0029] A buckle 26 is installed on the inner wall of the upper half of the furnace liner 2 through a nut. The buckle 26 can be easily taken manually. The furnace liner 2 is taken out by clamping the buckle 26 on the inner wall with a tool, and the combustion impurities inside are poured out.

[0030] It can also be used to place the carbon furnace 4, and the carbon furnace 4 is clamped on the buckle 26 around it to fix it; the carbon furnace is used to place charcoal for easy artificial charcoal grilling; at the same time, since the carbon furnace is placed in the furnace inner liner 2, the charcoal on the carbon furnace can be ignited by the flame in the furnace inner liner 2.

[0031] In order to facilitate the placement of combustion materials such as wood, a feed port 5 is provided on the side of the outer furnace 1 and the inner furnace 2, and the feed ports of the outer furnace 1 and the inner furnace 2 are arranged concentrically;

[0032] refer to Figure 4 As shown, in this embodiment, burning wood is manually put into the furnace inner tank 2 from the feed port 5, and at the same time, the bottom air supply system starts working and enters from the through slot 11. After the gas enters, part of it flows along the edge to the gap 3, and part of it flows along the air inlet 22 into the furnace inner tank 2 to cooperate with the combustion. Part of the gas entering the gap 3 enters the furnace inner tank 2 again from the hole slot 24 to assist combustion, and the other part continues to flow upward and flows out from the secondary combustion outlet hole 25. Since the secondary combustion outlet hole 25 is close to the upper mouth of the furnace inner tank 2 and contains combustible gas, when the gas flows out from the secondary combustion outlet hole 25, it contacts with the hot air and flame in the tank and burns again.

[0033] The benefits of the utility model are that the technical solution is to open holes and grooves on the walls of the upper and lower halves of the furnace inner shell, one for secondary combustion at the top and the other for full combustion at the bottom, thereby improving the combustion furnace and reducing the generation of smoke; a protrusion is provided at the bottom of the furnace inner shell, and is in a cone shape, and the air inlet is provided on the inclined surface of the protrusion, so the air inlet is also inclined, and after the air intake is coordinated, the air will not be directly directed upward, but will be directed upward from the inclined surface to avoid blowing the combustion material upward and not generate ash; a number of reinforced convex hulls are also provided on the bottom surface of the furnace inner shell, which not only serve as a combustion contact surface and greatly improve the combustion efficiency, but also can effectively improve the strength of the entire bottom of the furnace inner shell, and improve the force bearing capacity.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A smokeless furnace inner liner structure with a secondary combustion function, comprising a furnace outer liner and a furnace inner liner placed in the furnace outer liner, wherein a gap is left between the furnace outer liner and the furnace inner liner, and characterized in that: A protrusion protruding inward is arranged at the center of the bottom surface of the furnace inner container, and the protrusion is arranged in a cone shape. Air inlet holes are evenly opened on the inclined surfaces around the protrusion, and a plurality of reinforcing convex hulls are also arranged around the protrusion. A plurality of hole grooves are opened on the wall of the lower half of the furnace inner container, and the hole grooves are evenly distributed. A plurality of secondary combustion air outlet holes are opened on the wall of the upper half of the furnace inner container.

2. The smokeless furnace liner structure with secondary combustion function according to claim 1, characterized in that: A through slot is provided at the bottom of the furnace outer chamber for use with an air supply system.

3. The smokeless furnace liner structure with secondary combustion function according to claim 1, characterized in that: A buckle is installed on the inner wall of the upper half of the furnace inner container through a nut.

4. The smokeless furnace liner structure with secondary combustion function according to claim 3, characterized in that: A carbon furnace liner is also hung on the buckle of the furnace liner.

5. The smokeless furnace liner structure with secondary combustion function according to claim 1, characterized in that: Feeding ports are provided on the sides of the outer furnace and the inner furnace, and the feeding ports of the outer furnace and the inner furnace are arranged in concentric circles.

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