A new type of combustion furnace

Abstract

The utility model discloses a novel combustion furnace, the furnace body includes outer tube, inner tube, the inner tube fixed connection is in the inside of outer tube to make the inner chamber of inner tube forms the combustion chamber of combustion furnace, the outer tube is apart with inner tube and makes the annular inner chamber between outer tube and inner tube, the top and bottom of annular inner chamber are closed, the side of furnace body is provided with the open hole, the open hole is through outer tube and inner tube, the open hole is provided with the feeding cylinder that can move in and out, the feeding cylinder is embedded in the open hole department of furnace body, and the feeding cylinder passes through outer tube and extends into inner tube. The utility model discloses a novel combustion furnace's feeding cylinder can extend into inner tube, so that carrying is more convenient. When using, the position of feeding cylinder is positioned with the limiting sheet, and also very convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of combustion furnace technology, and specifically to a novel combustion furnace. Background Technology

[0002] Combustion stoves, as a common type of combustion equipment, are widely used in home heating, water boiling, and other scenarios. Nowadays, people increasingly enjoy traveling or hiking and other outdoor activities. They usually use small gas stoves or oil stoves to cook food. However, gas stoves and oil stoves are relatively large and inconvenient to carry. Moreover, due to safety restrictions, fuel cannot be purchased or carried.

[0003] Based on the above, a simple and convenient single-layer combustion furnace has emerged. This single-layer combustion furnace includes a furnace body and a combustion chamber. The furnace body has an opening at the upper end of the combustion chamber and an opening at the bottom end of the combustion chamber for combustion support. A fuel feeding cylinder is welded to the lower part of the furnace body at an outward tilt.

[0004] The drawback of this single-layer combustion furnace is: 1. The feeding cylinder is welded to the furnace body. Although it has high strength, the volume is relatively large due to the outward extension of the feeding cylinder, which makes it slightly inconvenient to use and carry. Manufacturers need large outer packaging when exporting, which makes transportation inconvenient.

[0005] 2. Incomplete combustion, low fuel utilization, poor combustion effect, and the generation of a large amount of harmful gases and soot will easily produce smoke, which will pollute the environment and affect the performance.

[0006] Therefore, a new type of combustion furnace is needed that can achieve complete combustion, improve fuel utilization, has a reasonable structure, and is easy to use. Utility Model Content

[0007] The purpose of this invention is to provide a novel combustion furnace to solve the aforementioned problems. It is more convenient to use and carry, and can achieve complete combustion, improve fuel utilization, and has a more rational structure.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A novel combustion furnace includes a furnace body comprising an outer cylinder and an inner cylinder. The inner cylinder is fixedly connected inside the outer cylinder so that the inner cavity of the inner cylinder forms the combustion chamber of the combustion furnace. The outer cylinder is separated from the inner cylinder so that an annular inner cavity is formed between the outer cylinder and the inner cylinder. The top and bottom ends of the annular inner cavity are closed. The furnace body has an opening on its side, which penetrates the outer cylinder and the inner cylinder; the opening is equipped with a feed cylinder that can move inward and outward, which is embedded in the opening of the furnace body and extends into the inner cylinder through the outer cylinder.

[0009] Furthermore, a plurality of snap-fit ​​mechanisms are fixedly connected to the outer cylinder; the snap-fit ​​mechanism includes a fixed shaft and a limiting plate, the fixed shaft is fixedly connected to the outer cylinder, and the limiting plate is rotatably sleeved on the fixed shaft; a plurality of limiting grooves are provided on the feeding cylinder, and the limiting plate and the limiting grooves cooperate with each other to restrict the feeding cylinder from sliding on the outer cylinder.

[0010] Furthermore, the fixed shaft is positioned above and / or below the opening.

[0011] Furthermore, the outer cylinder has several air inlets at its bottom periphery to allow external gas to enter the annular inner cavity, the inner cylinder has several first through holes at its bottom periphery to allow gas in the annular inner cavity to flow from the bottom of the inner cylinder to the inner cylinder for combustion, and the inner cylinder has several second through holes at its top periphery to allow gas in the annular inner cavity to flow to the top of the inner cylinder for combustion.

[0012] Furthermore, a support plate is fixedly connected to the bottom of the inner cylinder, and the support plate has several third through holes.

[0013] Furthermore, a connecting ring is fixedly connected to the lower inner side of the outer cylinder, and the outer wall of the inner cylinder is fixedly connected to the inside of the connecting ring.

[0014] Furthermore, a cover plate is fixedly connected to the top of the furnace body, and the cover plate is fixedly connected to the top of the outer cylinder and closes the top of the annular inner cavity.

[0015] Furthermore, the tops of the outer cylinder and the inner cylinder are integrally formed with several positioning pins facing upwards, and the cover plate is provided with several positioning holes. The positioning holes and positioning pins cooperate with each other to fix the cover plate to the top of the annular inner cavity.

[0016] Furthermore, the top of the cover plate is fixedly connected to several support mechanisms, the support mechanisms including connecting pieces and support pieces, the connecting pieces are fixedly connected to the cover plate, the bottom of the support pieces is hinged to the top of the connecting pieces, and the inner side of the support pieces is serrated.

[0017] Furthermore, the bottom of the outer cylinder is fixedly connected to several support mechanisms, each of which includes a fixed plate and a support plate, with the support plate hinged to the fixed plate.

[0018] The beneficial effects are: This novel combustion furnace features an opening on the side of the furnace body, which penetrates both the outer and inner cylinders. A movable feeding cylinder is positioned within this opening, extending through the outer cylinder into the inner cylinder, making it more convenient to carry. A limiting piece positions the feeding cylinder during use, further enhancing ease of operation.

[0019] Furthermore, the outer and inner cylinders form an annular cavity, which, combined with the air inlet on the outer cylinder and the first and second through holes on the inner cylinder, allows for smooth airflow, providing sufficient oxygen for fuel combustion in the inner cylinder's combustion chamber, promoting complete combustion, improving fuel utilization, and reducing harmful gas emissions. Simultaneously, the third through hole at the bottom of the support plate allows air to enter from the bottom, further promoting combustion. This invention also incorporates a snap-fit ​​mechanism that allows the feeding cylinder to retract and extend, facilitating transportation when retracted. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 For the present utility model Figure 2 Enlarged view of point A; Figure 4 For the present utility model Figure 2 Enlarged view of point B; Figure 5 This is a structural diagram of the bearing plate of this utility model; Figure 6 This is a structural diagram of the cover plate of this utility model; Figure 7 This is a schematic diagram of the support mechanism of this utility model; Figure 8 This is a schematic diagram of the feeding cylinder after it has shrunk.

[0022] The reference numerals in the attached drawings are explained as follows: 1. Furnace body; 11. Outer cylinder; 111. Air inlet; 12. Inner cylinder; 121. First through hole; 122. Second through hole; 123. Combustion chamber; 3. Support plate; 31. Third through hole; 4. Connecting ring; 41. Fixing piece; 42. Support piece; 5. Cover plate; 51. Positioning hole; 52. Positioning pin; 53. Connecting piece; 54. Support piece; 6. Feeding cylinder; 61. Fixed shaft; 62. Limiting piece; 63. Limiting groove; 7. Annular inner cavity. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] See Figures 1-8 As shown, this utility model provides a novel combustion furnace, including a furnace body 1. The furnace body 1 includes an outer cylinder 11 and an inner cylinder 12. The inner cylinder 12 is fixedly connected to the inside of the outer cylinder 1 so that the inner cavity of the inner cylinder forms the combustion chamber 123 of the combustion furnace. The outer cylinder 11 and the inner cylinder 12 are separated so that an annular inner cavity 7 is formed between the outer cylinder 11 and the inner cylinder 12. The top and bottom ends of the annular inner cavity 7 are closed. The furnace body 1 has an opening 112 on its side, which penetrates the outer cylinder 11 and the inner cylinder 12. The opening 112 is equipped with a feeding cylinder 6 that can move inward and outward. The feeding cylinder 6 is embedded in the opening 112 of the furnace body 1 and extends into the inner cylinder 12 through the outer cylinder 11. Several snap-fit ​​mechanisms are fixedly connected to the outer cylinder 11 to fix the feeding cylinder 6 and prevent it from sliding. The snap-fit ​​mechanism includes a fixed shaft 61 and a limiting piece 62. The fixed shaft 61 is fixedly connected to the outer cylinder 11, and the limiting piece 62 is sleeved on the fixed shaft 61. Several limiting grooves 63 are opened on the feeding cylinder 6. The limiting piece 62 and the limiting grooves 63 cooperate with each other to restrict the feeding cylinder 6 from sliding on the outer cylinder 11.

[0025] In this embodiment, the fixed shaft 61 is disposed below the opening hole 112. In some other embodiments, the fixed shaft 61 is disposed above the opening hole 112, or the opening hole 112 is disposed both above and below the opening hole 112.

[0026] In this embodiment, the outer cylinder 11 has several air inlets 111 at its bottom periphery to allow external gas to enter the annular inner cavity 7, and the inner cylinder 12 has several first through holes 121 at its bottom periphery to allow gas in the annular inner cavity 7 to flow from the bottom of the inner cylinder 11 to the inner cylinder 12 to aid combustion and provide primary air (primary air) for combustion. The inner cylinder 12 has several second through holes 122 at its top periphery to allow gas in the annular inner cavity 7 to flow to the top of the inner cylinder 12 to aid combustion, promote complete combustion of fuel and improve thermal efficiency (secondary air).

[0027] In this embodiment, a support plate 3 is fixedly connected to the bottom of the inner cylinder 12 for bearing fuel (such as coal, firewood, etc.). The support plate 3 has several third through holes 31 to facilitate the falling of ash and air circulation.

[0028] In this embodiment, a connecting ring 4 is fixedly connected to the lower inner side of the outer cylinder 11 to ensure the stability and concentricity of the inner cylinder in the outer cylinder; a cover plate 5 is fixedly connected to the top of the furnace body 1 to support the cookware, and the cover plate 5 is fixedly connected to the top of the outer cylinder 11 and closes the top of the annular inner cavity 7.

[0029] In this embodiment, the top of the outer cylinder 11 and the inner cylinder 12 are integrally formed with a plurality of positioning pins 52, and the cover plate 5 is provided with a plurality of positioning holes 51. The positioning holes 51 and the positioning pins 52 cooperate with each other to fix the cover plate 5 to the top of the annular inner cavity 7. Through the pin hole cooperation, the cover plate can be installed in place quickly and accurately.

[0030] In this embodiment, the top of the cover plate 5 is fixedly connected to several support mechanisms. The support mechanisms include connecting pieces 53 and support pieces 54. The connecting pieces 53 are fixedly connected to the cover plate 5. The bottom of the support pieces 54 is hinged to the top of the connecting pieces 53, and the angle can be adjusted to accommodate cookware of different sizes. The inner side of the support pieces 54 is serrated, which can effectively prevent the cookware from sliding.

[0031] In this embodiment, a feeding cylinder 6 is provided on the side of the furnace body 1. The feeding cylinder 6 is sleeved on the furnace body 1 and passes through the outer cylinder 11 and the inner cylinder 12 in sequence to discharge the flue gas generated by combustion.

[0032] In this embodiment, a plurality of snap-fit ​​mechanisms are fixedly connected to the outer cylinder 11 to fix the feeding cylinder 6 and prevent it from sliding. The snap-fit ​​mechanism includes a fixed shaft 61 and a limiting piece 62. The fixed shaft 61 is fixedly connected to the outer cylinder 11, and the limiting piece 62 is sleeved on the fixed shaft 61. A plurality of limiting grooves 63 are provided on the feeding cylinder 6. The limiting piece 62 and the limiting grooves 63 cooperate with each other to restrict the feeding cylinder 6 from sliding on the outer cylinder 11.

[0033] In this embodiment, the bottom of the outer cylinder 11 is fixedly connected to several support mechanisms, the support mechanisms including a fixing plate 41 and a support plate 42, the support plate 42 being hinged to the fixing plate 41.

[0034] When this utility model is in operation: Airflow path: External cold air enters the annular inner cavity through the air inlet on the outer cylinder. Under the action of the heat generated by combustion, the air rises in the annular inner cavity and is preheated.

[0035] Staged air supply: Preheated air is divided into two paths to enter the combustion chamber: Primary air: enters through the first through hole at the bottom of the inner cylinder and assists combustion from the bottom.

[0036] Secondary air: enters through the second through hole at the top of the inner cylinder, providing sufficient oxygen to the upper part of the flame, allowing the combustible gas to burn completely, reducing black smoke production, and improving thermal efficiency.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A novel combustion furnace, comprising a furnace body, characterized in that: The furnace body includes an outer cylinder and an inner cylinder. The inner cylinder is fixedly connected to the inside of the outer cylinder so that the inner cavity of the inner cylinder forms the combustion chamber of the combustion furnace. The outer cylinder is separated from the inner cylinder so that an annular inner cavity is formed between the outer cylinder and the inner cylinder. The top and bottom of the annular inner cavity are closed. The furnace body has an opening on its side, which penetrates the outer cylinder and the inner cylinder; the opening is equipped with a feed cylinder that can move inward and outward, which is embedded in the opening of the furnace body and extends into the inner cylinder through the outer cylinder. The outer cylinder is fixedly connected with several snap-fit ​​mechanisms; each snap-fit ​​mechanism includes a fixed shaft and a limiting plate, the fixed shaft is fixedly connected to the outer cylinder, and the limiting plate is rotatably sleeved on the fixed shaft; the feeding cylinder is provided with several limiting grooves, and the limiting plate and the limiting grooves cooperate with each other to restrict the feeding cylinder from sliding on the outer cylinder; The outer cylinder has several air inlets at its bottom periphery to allow external gas to enter the annular inner cavity. The inner cylinder has several first through holes at its bottom periphery to allow gas in the annular inner cavity to flow from the bottom of the inner cylinder to the inner cylinder for combustion. The inner cylinder has several second through holes at its top periphery to allow gas in the annular inner cavity to flow to the top of the inner cylinder for combustion.

2. The novel combustion furnace according to claim 1, characterized in that: The fixed shaft is positioned above and / or below the opening.

3. The novel combustion furnace according to claim 2, characterized in that: The bottom of the inner cylinder is fixedly connected to a support plate, and the support plate has several third through holes.

4. The novel combustion furnace according to claim 3, characterized in that: A connecting ring is fixedly connected to the lower inner side of the outer cylinder, and the outer wall of the inner cylinder is fixedly connected to the inside of the connecting ring.

5. The novel combustion furnace according to claim 4, characterized in that: A cover plate is fixedly connected to the top of the furnace body. The cover plate is fixedly connected to the top of the outer cylinder and closes the top of the annular inner cavity.

6. The novel combustion furnace according to claim 5, characterized in that: The tops of the outer cylinder and the inner cylinder are integrally formed with several positioning pins facing upwards. The cover plate is provided with several positioning holes, which cooperate with the positioning pins to fix the cover plate to the top of the annular inner cavity.

7. The novel combustion furnace according to claim 6, characterized in that: The top of the cover plate is fixedly connected to several support mechanisms, each of which includes a connecting piece and a support piece. The connecting piece is fixedly connected to the cover plate, and the bottom of the support piece is hinged to the top of the connecting piece. The inner side of the support piece is serrated.

8. The novel combustion furnace according to claim 7, characterized in that: The bottom of the outer cylinder is fixedly connected to several support mechanisms, each of which includes a fixed plate and a support plate, with the support plate hinged to the fixed plate.

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