Novel cordierite ceramic burner

Abstract

The utility model relates to a novel cordierite ceramic burner, which can further prolong the service life of the cordierite ceramic burner, and adopts the technical scheme that an inner furnace body is arranged at the center in an outer furnace body, and a first gas inlet pipe which extends into the outer furnace body and extends out of the outer furnace body is arranged in the outer furnace body; a second air inlet pipe extending into the inner furnace body and extending out of the outer furnace body is arranged in the inner furnace body, the opening of the inner furnace body is covered with a first iron sheet, a plurality of regularly-arranged through holes are formed in the first iron sheet, and a first cordierite ceramic sheet is laid on the first iron sheet; according to the honeycomb cordierite ceramic combustor, the advantages of efficient combustion, energy conservation and environmental protection of the honeycomb cordierite ceramic chips are brought into play, the service life of the cordierite ceramic combustor is further prolonged, the replacement cost of the cordierite ceramic combustor is reduced, and the honeycomb cordierite ceramic combustor is suitable for large-scale popularization and application. The cordierite ceramic burner is a great innovation of the cordierite ceramic burner.

Description

Technical Field

[0001] This utility model relates to burners, and in particular to a novel cordierite ceramic burner. Background Technology

[0002] Cordierite burners use honeycomb ceramic plates as the combustion head, which are completely premixed with air during combustion to ensure complete combustion. Approximately 70% of the energy is converted into infrared radiation. This infrared wave is easily absorbed by molecules and polymers and has strong penetrating power, exciting water molecules to resonate and evenly penetrating heat deep into the core of the heated object, resulting in uniform heating and improved heating quality and drying efficiency.

[0003] Due to its complete combustion, cordierite burners reduce pollutant emissions, such as carbon monoxide release ≤0.006% and nitrogen oxide release ≤5ppm, contributing to reduced environmental pollution. Cordierite material possesses high refractoriness and good thermal stability, capable of withstanding high-temperature environments and operating normally at temperatures above 1280°C, with surface temperatures reaching 1000-1200°C. It exhibits low thermal expansion and good thermal shock resistance, allowing it to withstand frequent heating and cooling cycles without easily cracking or deforming, thus extending the burner's lifespan. It can be widely used in industrial painting, ceramics, food, and printing and dyeing industries, as well as in barbecue grills, gas water heaters, high-powered stoves, rotary grills, portable food carts, portable gas stoves, gas heaters, outdoor heaters, and drying equipment. However, since cordierite has relatively weak longitudinal and transverse shear forces and zero acceleration, it has a problem of breaking and backfire when applied to burners, which leads to the burner being scrapped after cracking, greatly reducing its service life. Therefore, it is imperative to invent a new type of cordierite ceramic burner that can further extend its service life. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the existing technology, the purpose of this utility model is to provide a new type of cordierite ceramic burner, which can further extend the service life of cordierite ceramic burners.

[0005] The technical solution provided by this utility model includes a furnace body, an inner furnace body located at the center of an outer furnace body, a first air inlet pipe extending into and out of the outer furnace body, a second air inlet pipe extending into and out of the inner furnace body, a first iron sheet covering the opening of the inner furnace body with several regularly arranged through holes, a first cordierite ceramic sheet laid on top of the first iron sheet, and the space between the opening of the outer furnace body and the opening of the inner furnace body being filled by several second iron sheets joined together, the second iron sheets having several regularly arranged through holes, and a second cordierite ceramic sheet laid on top of the second iron sheets, thus forming two relatively independent spaces between the outer furnace body and the inner furnace body.

[0006] Furthermore, both the first and second cordierite ceramic sheets have a honeycomb structure with regularly arranged honeycomb-shaped pores.

[0007] Furthermore, the porosity of the first and second cordierite ceramic sheets is 40%-60%.

[0008] Furthermore, the through holes on the first iron sheet are either set in a one-to-one correspondence with or staggered with the honeycomb-shaped holes on the first cordierite ceramic sheet.

[0009] Furthermore, the through holes on the second iron sheet are either arranged in a one-to-one correspondence with or staggered with the honeycomb-shaped holes on the second cordierite ceramic sheet.

[0010] Furthermore, the second cordierite ceramic piece consists of 10-30 pieces, each of which is an equal fan-shaped combination forming a ring around the inner furnace body.

[0011] Furthermore, the inner furnace body and the first iron sheet, the outer furnace body and the second iron sheet, the first iron sheet and the first cordierite ceramic sheet, and the second iron sheet and the second cordierite ceramic sheet are all sealed together with a refractory adhesive layer.

[0012] Furthermore, both the outer furnace body and the inner furnace body are hollow cylinders, and are made of iron, steel or stainless steel.

[0013] Furthermore, adjustment baffles are installed on the air inlets of both the first and second air inlets.

[0014] Furthermore, both the first and second iron sheets are circular iron sheets adapted to the inner furnace body.

[0015] The beneficial technical effects of this utility model are as follows:

[0016] 1. By adding an iron plate substrate under the ceramic disc of the existing cordierite ceramic burner, the use will not be affected even after the cordierite ceramic disc breaks, which greatly improves the service life of the cordierite ceramic burner.

[0017] 2. The iron substrate is provided with through holes that correspond one-to-one with or are staggered with the honeycomb-shaped holes of the cordierite ceramic sheet. This ensures that even if the cordierite ceramic sheet bursts, it will not affect the backfire of the burner, and effectively avoids the problem of the small flame failing to ignite or backfire after the cordierite ceramic sheet bursts.

[0018] 3. The second cordierite ceramic piece is made of multiple pieces spliced ​​together, which can ensure that the splicing arc is smooth and natural. If a broken cordierite ceramic piece is replaced in a specific direction, the risk of cracking is reduced, and the replacement cost is also reduced. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a side view of the structure of this utility model.

[0021] Figure 3 This is a top view of the structure of this utility model.

[0022] Figure 4 This is a top view of the structural cross-section of this utility model.

[0023] Figure 5 This is a schematic diagram of the air intake pipe structure of this utility model.

[0024] In the attached diagram, the components are: outer furnace body 1, inner furnace body 2, first iron sheet 3, first cordierite ceramic sheet 4, second iron sheet 5, second cordierite ceramic sheet 6, refractory adhesive layer 7, and adjusting baffle 8. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1-4 This utility model includes a furnace body, an outer furnace body 1 with an inner furnace body 2 located at its center, a first air inlet pipe 1-1 extending into and out of the outer furnace body 1, a second air inlet pipe 2-1 extending into and out of the inner furnace body 1, a first iron sheet 3 covering the opening of the inner furnace body 2 with several regularly arranged through holes, a first cordierite ceramic sheet 4 laid on top of the first iron sheet 3, the space between the opening of the outer furnace body 1 and the opening of the inner furnace body 2 being filled by several second iron sheets 5 joined together, the second iron sheets 5 having several regularly arranged through holes, and a second cordierite ceramic sheet 6 laid on top of the second iron sheets 5, so that the outer furnace body 1 and the inner furnace body 2 form two relatively independent spaces.

[0027] Reference Figure 3 Both the first cordierite ceramic sheet 4 and the second cordierite ceramic sheet 6 have a honeycomb structure with regularly arranged honeycomb pores. This structure greatly increases the specific surface area, allowing the gas to fully contact the air and providing good conditions for efficient combustion.

[0028] Furthermore, the first cordierite ceramic sheet 4 and the second cordierite ceramic sheet 6 have a porosity of 40%-60%, and the pores are evenly distributed, which is conducive to the flow and diffusion of gas, so that the combustion gas can be evenly distributed in the combustion sheet, ensuring the stability and uniformity of combustion.

[0029] Furthermore, the through holes on the first iron sheet 3 are either set in a one-to-one correspondence with or staggered with the honeycomb-shaped holes on the first cordierite ceramic sheet 4.

[0030] Furthermore, the through holes on the second iron sheet 5 are either arranged in a one-to-one correspondence with or staggered with the honeycomb-shaped holes on the second cordierite ceramic sheet 6.

[0031] Furthermore, the second cordierite ceramic sheet 6 consists of 10-30 pieces, each of which is an equal fan-shaped combination forming a ring around the inner furnace body 2.

[0032] Furthermore, the inner furnace body 2 and the first iron sheet 3, the outer furnace body 1 and the second iron sheet 5, the first iron sheet 3 and the first cordierite ceramic sheet 4, and the second iron sheet 5 and the second cordierite ceramic sheet 6 are all sealed together with a refractory adhesive layer 7.

[0033] Furthermore, both the outer furnace body 1 and the inner furnace body 2 are hollow cylinders, and are made of iron, steel or stainless steel.

[0034] Reference Figure 5 Furthermore, both the first air intake pipe 1-1 and the second air intake pipe 2-1 are equipped with adjusting baffles 8, which can adjust the amount of air entering.

[0035] Furthermore, both the first iron sheet 3 and the second iron sheet 5 are circular iron sheets adapted to the inner furnace body 2.

[0036] This utility model of cordierite ceramic sheet has an extremely low coefficient of thermal expansion, generally within ×10⁻⁻⁻⁶. 6The temperature range is between ℃. This gives it good dimensional stability during rapid temperature changes, making it less prone to cracking or deformation due to thermal expansion and contraction. It can withstand frequent thermal shocks and maintain good structural integrity in high-temperature environments. Due to its low coefficient of thermal expansion and high melting point, cordierite ceramic sheets have excellent thermal stability, enabling them to work stably at high temperatures for extended periods. They can withstand temperatures up to approximately 1400℃, with compressive strength typically between 200MPa and 500MPa, and flexural strength between 100MPa and 200MPa. While the cordierite ceramic sheet can withstand a certain amount of external force and is not easily broken, it may burst when used in a burner. Therefore, the structure of this utility model with an iron sheet substrate can still be used even after the cordierite ceramic sheet breaks, greatly improving the service life of the cordierite ceramic burner. Furthermore, the iron sheet substrate is provided with through holes that correspond one-to-one with or are staggered with the honeycomb-shaped holes of the cordierite ceramic sheet, ensuring that even if the cordierite ceramic sheet bursts, it will not affect the backfire of the burner and effectively avoids the problem of the small flame failing to ignite or backfire after the cordierite ceramic sheet bursts. Moreover, based on this utility model, a furnace body and corresponding accessories can still be added outside the outer furnace body 1 to form a three-layer or multi-layer structure, increasing the scope of application.

[0037] When a low flame is needed, only the inner furnace body 2 needs to be filled with air. Only the first cordierite ceramic piece 4 at the center of the furnace body emits flame through the regularly arranged through holes on the first iron plate 3 and the regularly arranged honeycomb-shaped small holes on the first cordierite ceramic piece 4. When a high flame is needed, both the outer furnace body 1 and the inner furnace body 2 are filled with air simultaneously. The first cordierite ceramic piece 4 at the center of the furnace body and the second cordierite ceramic piece 6 on the periphery emit flame simultaneously. The second cordierite ceramic piece 6 emits flame through the regularly arranged through holes on the second iron plate 5 and the regularly arranged honeycomb-shaped small holes on the second cordierite ceramic piece 6. The through holes and honeycomb-shaped small holes can be arranged correspondingly or staggered. The second cordierite ceramic piece 6 surrounds the inner furnace body 2 completely, generally requiring 10-30 pieces to ensure a smooth and natural arc when spliced. Furthermore, if a piece breaks, it is easy to replace, saving costs. The adjusting baffles 8 on the air inlets of the first air inlet pipe 1-1 and the second air inlet pipe 2-1 can control the air intake volume. Before the gas and air enter the honeycomb cordierite ceramic sheet, the honeycomb structure of the combustion sheet provides a large number of channels, and the premixed gas can be evenly distributed on the surface and inside of the entire combustion sheet. When the mixed gas encounters the ignition source or reaches the ignition temperature, it begins to burn on the surface and in the pores of the honeycomb cordierite ceramic sheet. The honeycomb structure increases the contact area between the gas and the combustion sheet, making the combustion more complete. At the same time, the high thermal stability and high temperature resistance of cordierite material can ensure that the combustion sheet maintains structural stability in high temperature environments and continuously provides good conditions for combustion.

[0038] The heat generated by combustion is partially transferred outward through thermal radiation and partially transferred to the honeycomb cordierite ceramic sheet itself through thermal conduction, and then transferred by the combustion sheet to the object or space in contact with it. Due to the excellent heat exchange performance of the honeycomb structure of the combustion sheet, heat can be evenly distributed in the surrounding environment, improving heat utilization efficiency. The honeycomb structure allows for thorough mixing and contact between the fuel gas and air, enabling more complete combustion and improving combustion efficiency to over 95%. Compared to ordinary combustion methods, this saves 30%-50% of fuel gas, and the complete combustion reduces emissions of harmful gases such as carbon monoxide and nitrogen oxides, making it energy-saving and environmentally friendly. This invention not only leverages the advantages of high-efficiency combustion and energy conservation of the honeycomb cordierite ceramic sheet, but also further extends the service life of the cordierite ceramic burner and reduces its replacement cost. It represents a major innovation in cordierite ceramic burners and has significant economic and social benefits.

[0039] It should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any person skilled in the art who can make modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution shall fall within the protection scope of the present utility model.

Claims

1. A new cordierite ceramic burner comprising a furnace body, characterized in that, An outer furnace body (1) is provided with an inner furnace body (2) at the center, the outer furnace body (1) is provided with a first air inlet pipe (1-1) extending into the outer furnace body (1) and extending out of the outer furnace body (1), the inner furnace body (2) is provided with a second air inlet pipe (2-1) extending into the inner furnace body (2) and extending out of the outer furnace body (1), the opening of the inner furnace body (2) is covered with a first iron sheet (3), the first iron sheet (3) is provided with a plurality of regularly arranged through holes, the first iron sheet (3) is paved with a first tremolite ceramic sheet (4) above, the space between the opening of the outer furnace body (1) and the opening of the inner furnace body (2) is filled with a plurality of second iron sheets (5) spliced together, the second iron sheet (5) is provided with a plurality of regularly arranged through holes, the second iron sheet (5) is paved with a second tremolite ceramic sheet (6) above, so that the outer furnace body (1) and the inner furnace body (2) form two relatively independent spaces.

2. The new cordierite ceramic burner according to claim 1, characterized in that, The first tremolite ceramic sheet (4) and the second tremolite ceramic sheet (6) are both honeycomb structures, and have regularly arranged honeycomb holes thereon.

3. The new cordierite ceramic burner according to claim 1, characterized in that, The porosity of the first tremolite ceramic sheet (4) and the second tremolite ceramic sheet (6) is 40%-60%.

4. The new cordierite ceramic burner according to claim 1, characterized in that, The plurality of through holes on the first iron sheet (3) and the honeycomb holes on the first tremolite ceramic sheet (4) are arranged one-to-one or staggered.

5. The novel cordierite ceramic combustor according to claim 1, wherein, The plurality of through holes on the second iron sheet (5) and the honeycomb holes on the second tremolite ceramic sheet (6) are arranged one-to-one or staggered.

6. The novel cordierite ceramic combustor according to claim 1, characterized by, The second tremolite ceramic sheet (6) is provided with 10-30 pieces, each piece is an equal sector combined together to form a ring around the inner furnace body (2).

7. The novel cordierite ceramic combustor according to claim 1, characterized by, The inner furnace body (2) and the first iron sheet (3), the outer furnace body (1) and the second iron sheet (5), the first iron sheet (3) and the first tremolite ceramic sheet (4), and the second iron sheet (5) and the second tremolite ceramic sheet (6) are all sealed and connected together by a refractory glue layer (7).

8. The novel cordierite ceramic combustor according to claim 1, characterized by, The outer furnace body (1) and the inner furnace body (2) are both hollow cylinders, and are made of iron, steel or stainless steel.

9. The novel cordierite ceramic combustor according to claim 1, characterized by, Adjusting baffles (8) are installed on the air inlets of the first air inlet pipe (1-1) and the second air inlet pipe (2-1).

10. The novel cordierite ceramic combustor according to claim 1, characterized by, The first iron sheet (3) and the second iron sheet (5) are both circular iron sheets adapted to the inner furnace body (2).

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