A heating furnace structure that enables concentrated flame combustion

Abstract

This utility model relates to the field of heating equipment technology, and more particularly to a heating furnace structure capable of achieving concentrated flame combustion. It includes an outer cylinder assembly, an inner cylinder assembly, a combustion base, and a secondary combustion-supporting assembly. The beneficial effects of this utility model are: by setting limiting blocks at the inlet and outlet of the combustion nozzles in the inner cylinder, the limiting blocks guide air to flow along a spiral path, forming a stable rotating airflow, thereby improving the mixing efficiency of air and fuel and enhancing the combustion effect.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to a heating furnace structure that can achieve concentrated combustion of flames. Background Technology

[0002] With the development of the heating equipment industry, combustion stoves have become widely used as common heating and warming tools. However, these devices still have some problems in practical use. For example, current combustion stoves on the market typically use a single furnace tile or single-stage combustion to obtain heat energy. This method not only has low combustion efficiency but also easily leads to resource waste and environmental pollution. In addition, although some designs have introduced secondary air intake or combustion-aiding structures, the problem of flame dispersion is still common, resulting in heat not being concentrated and affecting the efficiency of heating or cooking.

[0003] Existing technology, patent document CN105841196B, discloses a combustion furnace, published on June 26, 2018. This design guides air into a gas vortex through multiple first air holes on the upper edge of the inner shell, suppressing upward flame ejection during combustion and thus achieving uniform combustion. However, the main drawback of this design is that its relatively uniform flame distribution makes it difficult to concentrate the flame at a single point for efficient heating. Because the flame cannot be focused, heat loss is significant, especially in scenarios requiring rapid heating or concentrated heat, where its performance is limited. Furthermore, this design primarily focuses on combustion uniformity rather than flame concentration, therefore its effectiveness is less than ideal in applications requiring high thermal efficiency, such as heating or boiling water.

[0004] Therefore, it is necessary to design a heating furnace structure that can achieve concentrated combustion of flames to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a heating furnace structure that enables concentrated flame combustion, thereby overcoming the aforementioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A heating stove structure capable of achieving concentrated flame combustion includes: The outer cylinder assembly includes a cylindrical outer cylinder body and air inlets disposed around the bottom of the outer cylinder body; The inner cylinder assembly is coaxially disposed inside the outer cylinder and has an annular gap between them; the inner cylinder assembly includes a cylindrical inner cylinder and a flame gathering hood disposed on the top of the inner cylinder; several combustion-supporting holes are evenly opened along the circumference on the side wall of the inner cylinder, and the combustion-supporting holes connect the annular gap and the inside of the inner cylinder; the flame gathering hood is inverted conical and has a flame outlet at the top. A combustion base is located at the bottom of the inner cylinder assembly and is arranged coaxially with the inner cylinder body; the combustion base includes several fuel tanks that are arched upward in the middle and located on the combustion base. The secondary combustion-supporting component includes several sets of combustion injection holes arranged on the upper part of the inner cylinder assembly and along the outer axis of the inner cylinder assembly, and limiting blocks arranged at the left and right ends of the combustion injection holes to restrict the direction of airflow.

[0007] Preferably, the combustion-supporting holes of the inner cylinder are evenly distributed circumferentially, and the axis of each combustion-supporting hole forms an angle of 5° to 10° with the radial direction of the inner cylinder; the diameter of the combustion-supporting holes gradually decreases from the bottom of the inner cylinder upwards.

[0008] Preferably, the fuel tanks of the combustion base are distributed in a ring with equal spacing.

[0009] Preferably, the limiting blocks are respectively disposed on the inner wall and outer wall of the inner cylinder, and are also respectively disposed on the left half and right half of the combustion injection hole. The limiting blocks are used to restrict the direction of air entering the outer wall of the inner cylinder, and at the same time restrict the direction of air exiting the inner wall of the inner cylinder, so that the airflow direction is a vortex structure with the center of the circle.

[0010] The beneficial effects of this utility model are: This technical solution improves the mixing efficiency of air and fuel and enhances the combustion effect by setting limiting blocks at the inlet and outlet of the combustion injection hole in the inner cylinder and guiding the air to flow along the spiral path through the limiting blocks.

[0011] By setting an inverted cone-shaped flame concentrator at the top of the inner cylinder, the heat generated by combustion is concentrated towards the center, while reducing heat loss and achieving concentrated flame output. By installing a secondary combustion-supporting component in the upper part of the inner cylinder, the combustion efficiency is further improved and the flame temperature is enhanced. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a heating stove body that can achieve concentrated flame combustion according to the present invention; Figure 2 This is a schematic diagram of the internal structure of a heating stove body structure that can achieve concentrated flame combustion according to this utility model; Figure 3 This is a schematic diagram of the inner cylinder of a heating furnace body structure that enables concentrated flame combustion according to this utility model; Figure 4 This is an internal structural diagram of a heating stove body structure capable of achieving concentrated flame combustion according to the present invention. Figure 5 This is a schematic diagram of an internal combustion nozzle air intake that enables concentrated flame combustion according to the present invention. In the diagram: 1. Outer cylinder; 2. Air inlet; 4. Inner cylinder; 5. Flame gathering hood; 6. Combustion base; 7. Fuel tank; 10. Combustion nozzle; 9. Limiting block; 41. Combustion-supporting nozzle. Detailed Implementation

[0013] Reference Figures 1 to 5 A heating furnace structure capable of concentrated flame combustion includes an outer cylinder assembly comprising a cylindrical outer cylinder 1 and air inlets 2 arranged around the bottom of the outer cylinder 1; an inner cylinder assembly coaxially disposed inside the outer cylinder 1 with an annular gap between them; the inner cylinder assembly comprising a cylindrical inner cylinder 4 and a flame concentrator 5 disposed on the top of the inner cylinder 4; a plurality of combustion-supporting holes are evenly distributed circumferentially on the side wall of the inner cylinder 4, the combustion-supporting holes connecting the annular gap to the interior of the inner cylinder 4; the flame concentrator 5 is inverted conical in shape and has a flame outlet at the top; and a combustion base 6 disposed at the bottom of the inner cylinder assembly 4 and coaxially arranged with the inner cylinder 4; the combustion base 6 includes a plurality of fuel troughs 7 arched upward in the middle and disposed on the combustion base 6. The secondary combustion-supporting component includes several sets of combustion injection holes 10 arranged on the upper part of the inner cylinder assembly 4 and along the outer axis of the inner cylinder assembly, and limiting blocks 9 respectively arranged at the left and right ends of the combustion injection holes 10 to restrict the airflow direction. The inner cylinder 4 is a cylindrical structure with a plurality of combustion-supporting holes 41 evenly distributed circumferentially on its sidewalls. These combustion-supporting holes 41 connect the annular gap to the interior of the inner cylinder 4. The combustion-supporting holes are evenly distributed circumferentially, and the axis of each combustion-supporting hole 41 forms an angle of 5° to 10° with the radial direction of the inner cylinder 4, so that the air entering the inner cylinder 4 has a certain rotational speed. The diameter of the combustion-supporting holes gradually decreases from the bottom of the inner cylinder 4 upwards to accommodate the oxygen demand at different heights. A flame concentrator 5 is located at the top of the inner cylinder 4 and is inverted conical in shape, with a flame outlet at its top. The inner wall of the flame concentrator 5 is coated with a high-temperature resistant ceramic coating to reduce heat loss and increase the flame temperature.

[0014] The fuel tank 7 of the combustion base 6 is connected to the interior of the inner cylinder 4, and is used to supply oxygen to the fuel in the fuel tank 7. The upward arched structure in the middle of the combustion base 6 can not only guide the heat generated by combustion to spread to all sides, but also guide the flame to gather at the top of the inner cylinder 4.

[0015] The secondary combustion aid is located at the top of the inner cylinder assembly. Combustible gas continues to flow through the gap and exits from the combustion nozzle 10. Upon contact with the flame, it undergoes secondary combustion, thus achieving secondary combustion. After the first and second combustions, the material is fully combusted and no smoke is produced, achieving smokeless combustion.

[0016] Limiting blocks are respectively provided on the inner wall and outer wall of the inner cylinder 2, and the limiting blocks are respectively located on the left half and right half of the combustion injection hole 10. The limiting blocks are used to restrict the direction of air entering the outer wall of the inner cylinder 2, while the limiting blocks placed on the inner wall are used to restrict the direction of air delivery into the inner cylinder, so that the incoming air flow is a vortex structure with a circular center flow, thereby causing the flame to be delivered to the center and concentrated combustion is achieved.

[0017] One implementation example is that the combustion nozzles are evenly distributed along the inner cylinder 2, and the limiting blocks are semi-circular arc plate structures. When viewed from the clockwise direction, the limiting block installed on the left side of the combustion nozzle protrudes into the inner wall and is connected to the left end of the combustion nozzle to form a limiting structure for the air inlet. The limiting block installed on the right side protrudes into the outer wall and is also connected to the right end of the combustion nozzle to form a limiting mechanism for the air outlet. A hole for air circulation is left between the limiting blocks on both sides. Similarly, they can be arranged in the opposite direction to obtain flames with opposite rotation and concentration.

[0018] The working principle of this invention is as follows: When fuel is placed on the combustion base 6 and ignited, air is supplied to the furnace body through the air inlets 2 around the bottom of the outer cylinder 1. Part of the air flows upward through the gaps in the inner wall of the outer cylinder 1, while another part enters the inner cylinder 4 through the combustion-supporting holes on the side wall of the inner cylinder 4, where it mixes thoroughly with the fuel in the combustion base 6 for combustion. The flame generated by combustion is guided by the upward-arching structure in the middle of the combustion plate 6 and gathers towards the top of the inner cylinder 4. Simultaneously, the flame concentrating hood 5 concentrates heat towards the center, reducing heat loss. At the same time, the combustion nozzles 10 of the secondary combustion-supporting component introduce air through the air inlets from the gaps and inject combustion-supporting gas towards the flame outlet direction, further improving combustion efficiency and increasing flame temperature. Because the combustion nozzles 10 restrict the gas flow, forming a vortex that concentrates towards the center, this portion of the flame forms a vortex and converges towards the center, achieving secondary combustion while simultaneously coordinating with the flame inside the inner cylinder for concentrated combustion.

[0019] The advantages of this utility model are that, by setting limiting blocks at the inlet and outlet of the combustion injection hole in the inner cylinder, the limiting blocks guide the air to flow along the spiral path, forming a stable rotating airflow, thereby improving the mixing efficiency of air and fuel and enhancing the combustion effect.

[0020] By setting an inverted cone-shaped flame concentrator at the top of the inner cylinder, the heat generated by combustion is concentrated towards the center, while reducing heat loss and achieving concentrated flame output. By installing a secondary combustion-supporting component in the upper part of the inner cylinder, the combustion efficiency is further improved and the flame temperature is enhanced.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heating stove structure capable of achieving concentrated flame combustion, characterized in that: It includes: The outer cylinder assembly includes a cylindrical outer cylinder body and air inlets disposed around the bottom of the outer cylinder body; The inner cylinder assembly is coaxially disposed inside the outer cylinder and leaves an annular gap between them; the inner cylinder assembly includes a cylindrical inner cylinder and a flame gathering hood disposed on the top of the inner cylinder, and several combustion-supporting holes are evenly opened along the circumference on the side wall of the inner cylinder, and the combustion-supporting holes connect the annular gap and the interior of the inner cylinder. The flame concentrator is inverted cone shape and has a flame outlet at the top; A combustion base is located at the bottom of the inner cylinder assembly and is arranged coaxially with the inner cylinder body; the combustion base includes several fuel tanks that are arched upward in the middle and located on the combustion base. The secondary combustion-supporting component includes several sets of combustion injection holes arranged on the upper part of the inner cylinder assembly and along the outer axis of the inner cylinder assembly, and limiting blocks arranged at the left and right ends of the combustion injection holes to restrict the direction of airflow.

2. The heating stove structure capable of realizing concentrated combustion of fire according to claim 1, characterized in that: The combustion-supporting holes of the inner cylinder are evenly distributed circumferentially, and the axis of each combustion-supporting hole forms an angle of 5° to 10° with the radial direction of the inner cylinder; the diameter of the combustion-supporting holes gradually decreases from the bottom of the inner cylinder upwards.

3. The heating stove structure capable of realizing concentrated combustion of fire according to claim 1, characterized in that: The fuel tanks of the combustion base are distributed in a ring with equal spacing.

4. The heating stove structure capable of realizing concentrated combustion of fire according to claim 1, characterized in that: The limiting blocks are respectively disposed on the inner wall and outer wall of the inner cylinder, and are also disposed on the left half and right half of the combustion injection hole. The limiting blocks are used to restrict the direction of air entering the outer wall of the inner cylinder, and at the same time restrict the direction of air exiting the inner wall of the inner cylinder, so that the airflow direction of the exhaust is a vortex structure with the center of the circle.

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