Air distribution plate for box type baking

Abstract

The utility model discloses an air distribution plate for box-type baking, relates to the technical field of baking equipment, and solves the problems of non-uniform airflow distribution and inconsistent baking effect generally existing in the traditional box-type baking equipment in the prior art. The positioning device comprises a positioning plate, a wind shield is arranged on the side edge of the positioning plate, and a wind guide hole is formed in the positioning plate. The positioning plate is in lap joint with the bottom frame of the flue-cured tobacco box, the air guide holes in the positioning plate can promote hot air circulation of the flue-curing barn, the air guide holes with the diameters sequentially increased from outside to inside can guide hot air flow into the middle of the flue-cured tobacco box, and the problem that the flue-cured tobacco box is high in airflow flowing speed on the two sides and high in flowing speed in the middle, so that the flue-curing quality is uneven is solved. The wind shield can guide airflow to the bottom of the tobacco curing box, so that hot air enters the tobacco curing box.

Description

Technical Field

[0001] This utility model relates to the field of baking equipment technology, and in particular to a box-type baking oven. Background Technology

[0002] In the baking industry, box-type baking equipment is widely used for drying various materials such as food, tobacco, and medicinal herbs. The working principle of box-type baking equipment is to generate heat through heating elements, and then use airflow to transfer heat to the materials, achieving drying and baking. The air distribution plate, as a key component of box-type baking equipment, primarily functions to evenly distribute the airflow entering the box, ensuring that materials in all areas of the box are baked uniformly. Traditional air distribution plate designs have certain limitations in airflow distribution. Box-type baking chambers are generally upward-flowing. Due to the influence of airflow transport and the box structure and the door during the upward flow, the air velocity decreases closer to the door, resulting in poor baking effects and uneven baking in the area near the door. Furthermore, in box-type baking chambers, the air velocity is usually higher on the left and right sides and lower in the middle. This uneven air velocity distribution leads to uneven heating of materials during baking, affecting product quality and consistency. In modern industrial production, box-type baking equipment is widely used in food processing, chemical production, and material handling. However, traditional box-type baking equipment generally suffers from uneven airflow distribution and inconsistent baking results, which not only affects product quality but also reduces production efficiency.

[0003] To address these issues, existing improvements include optimizing the perforation layout of the air distribution plate and adding airflow guiding devices. However, these methods still have some shortcomings in practical applications. For example, simply optimizing the perforation layout often fails to fundamentally solve the problem of uneven airflow in different areas, while adding airflow guiding devices may increase the complexity and cost of the equipment, and may also create additional resistance to airflow, affecting baking efficiency.

[0004] Therefore, there is a need for a box-type baking air distribution plate that can effectively solve the above problems, so as to improve the uniformity of airflow distribution in box-type baking equipment and improve baking quality and efficiency. Utility Model Content

[0005] To address the shortcomings in the aforementioned background technology, this utility model proposes an air distribution plate for box baking, which solves the problems of uneven airflow distribution and inconsistent baking effects commonly found in traditional box baking equipment.

[0006] The technical solution of this utility model is implemented as follows: A wind distribution plate for box-type baking includes a positioning plate, a baffle plate on the side of the positioning plate, and air guide holes on the positioning plate to ensure uniform airflow through the oven. The positioning plate overlaps the bottom frame of the baking box. The air guide holes on the positioning plate promote the circulation of hot air in the baking box. The air guide holes guide the hot airflow into the middle of the baking box, avoiding the problem of uneven baking quality caused by the fast airflow speed on both sides of the baking box and the slow airflow speed in the middle. The baffle plate guides the airflow to the bottom of the baking box, allowing the hot air to enter the baking box.

[0007] More preferably, the air guide hole includes a first hole, a second hole, and a third hole arranged sequentially from the outside to the inside, with the third hole located in the middle of the positioning plate. Providing holes of at least three different diameters further ensures that the airflow moves at a uniform speed within the tobacco curing box.

[0008] More preferably, the positioning plate is provided with a plurality of tapered air guides that mate with the first hole. The tapered air guides, positioned on the first hole, can accelerate the airflow velocity.

[0009] More preferably, the conical air guide duct is inclinedly connected to the upper part of the positioning plate, and the inclination angle of the conical air guide duct is 15~25°. The conical air guide duct is inclined towards the middle, which can guide the airflow on both sides towards the middle, resulting in a good airflow guiding effect.

[0010] More preferably, the lower diameter of the conical air guide duct is larger than the upper diameter, the lower air inlet diameter is 1-2 cm, and the upper air outlet diameter is 0.5-1 cm. The distance between the first hole and the outermost edge of the positioning plate is 4-6 cm.

[0011] More preferably, the second hole is evenly distributed between the first hole and the third hole, and the diameter of the second hole is 0.4~0.6cm. The diameter of the third hole is 0.8~1.0cm.

[0012] More preferably, the wind deflector is an arc-shaped alloy plate, which is connected to the positioning plate to form an L-shaped structure. The arc-shaped alloy plate is installed on the air inlet side, effectively blocking the airflow from flowing out from the bottom of the tobacco curing box, thus improving the utilization rate of the airflow.

[0013] Preferably, the positioning plate is made of a high-strength heat-resistant alloy plate, and the positioning plate and the wind baffle are integrally formed. The use of a high-strength heat-resistant alloy plate in a single molding process ensures good structural stability and better support for the flue-cured tobacco.

[0014] The beneficial effects of this utility model are as follows: The positioning plate of this utility model overlaps with the bottom frame of the tobacco curing box. The air guide holes on the positioning plate can promote the circulation of hot air in the curing box. The air guide holes with diameters increasing from the outside to the inside can guide the hot airflow into the middle of the tobacco curing box, avoiding the problem of uneven curing quality caused by the airflow speed being fast on both sides of the tobacco curing box and the airflow speed being slow in the middle. The baffle can guide the airflow to the bottom of the tobacco curing box, allowing the hot air to enter the tobacco curing box. It has strong versatility, improves curing uniformity, and reduces airflow resistance.

[0015] Through the synergistic effect of the outer arc surface structure, the perforation distribution structure, and the flow guide channel structure, the problem of uneven airflow distribution in box-type baking equipment is effectively solved, making the air velocity in each area of ​​the box-type baking room more uniform, so that the materials can be baked more evenly, thus improving the quality and consistency of the products.

[0016] The outer curved surface design reduces airflow loss on the outside of the air distribution plate, lowers airflow resistance, and allows airflow to be transported upwards more smoothly, thus improving baking efficiency.

[0017] Simple structure and low cost: The structure of the air distribution plate of this utility model is relatively simple. It is an optimized design based on the traditional air distribution plate. It does not require the addition of complex airflow guiding equipment, which reduces the manufacturing and maintenance costs of the equipment. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0020] Figure 2 for Figure 1 Top view;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0022] Figure 4 for Figure 3 Top view;

[0023] Figure 5 Side view of this utility model.

[0024] In the diagram: 1. Wind deflector, 2. Positioning plate, 3. Air guide hole, 4. Conical air guide pipe, 5. First hole, 6. Second hole, 7. Third hole. 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] like Figure 1 and Figure 2 As shown in Embodiment 1, an air distribution plate for box-type baking includes a positioning plate 2, a baffle plate 1 on the side of the positioning plate 2, and several air guide holes 3 on the positioning plate 2 to ensure uniform airflow through the oven. The positioning plate 2 overlaps the bottom frame of the baking box. The air guide holes 3 on the positioning plate 2 can promote the circulation of hot air in the baking box. The diameter variation of the air guide holes 3, which are used to ensure uniform airflow through the oven, can guide the hot airflow into the middle of the baking box, avoiding the problem of uneven baking quality caused by the fast airflow speed on both sides of the baking box and the slow airflow speed in the middle. The baffle plate 1 can guide the airflow to the bottom of the baking box, allowing the hot air to enter the baking box. It can be applied to the needs of different application scenarios. Through the adjustable structural design, it can adapt to various specifications of box-type baking equipment, has strong market adaptability, and has high application value.

[0027] Specifically, the device is placed at the bottom of the tobacco curing box, and tobacco is loaded using conventional methods. After loading, the tobacco curing box is placed inside the curing room. At this point, the lower part of the baffle plate 1 is in contact with the ground, preventing airflow from passing through the sides and thus hindering tobacco curing. The air guide hole 3, in conjunction with the baffle plate 1, controls the airflow velocity. This device, through optimized design of the air distribution plate structure, achieves scientific distribution of airflow within the box-type curing equipment, effectively solving the problem of uneven airflow distribution and ensuring the uniformity and consistency of material curing. Simultaneously, by reducing airflow resistance and improving thermal efficiency, it achieves the dual goals of improving product quality and reducing energy consumption.

[0028] like Figure 3 , Figure 4 and Figure 5 As shown in Embodiment 2, an air distribution plate for box-type tobacco curing includes air guide holes 3 comprising a first hole 5, a second hole 6, and a third hole 7 arranged sequentially from the outside to the inside, with the third hole 7 positioned in the middle of the positioning plate 2. Providing holes of at least three diameters further ensures that the airflow flows at a uniform speed within the tobacco curing box.

[0029] In this embodiment, the positioning plate 2 is provided with a plurality of tapered air guide pipes 4 that mate with the first holes 5. The tapered air guide pipes 4 are positioned on the first holes 5 to accelerate the airflow velocity. The tapered air guide pipes 4 are inclined to the upper part of the positioning plate 2, and the inclination angle of the central axis of the tapered air guide pipe 4 relative to the horizontal plane is 15~25°. The tapered air guide pipes 4 are inclined towards the center, which can guide the airflow from both sides towards the center, resulting in good airflow guidance.

[0030] like Figure 5 As shown in Embodiment 3, an air distribution plate for box-type baking is provided. The lower part of the conical air guide duct 4 has a larger diameter than the upper part. The lower diameter of the conical air guide duct 4 is 1-2 cm, and its diameter is the same as the diameter of the first hole 5, preferably 1.5 cm. The densely packed holes formed can control the airflow to a certain extent. The upper diameter of the conical air guide duct 4 is 0.5-1 cm. The distance between the first hole 5 and the outermost part of the positioning plate 2 is 4-6 cm, preferably 5 cm, to ensure the strength of the positioning plate 2 while facilitating airflow. The second hole 6 is distributed between the first hole 5 and the third hole 7. The diameter of the second hole 6 is 0.4-0.6 cm, preferably 0.6 cm. The diameter of the third hole 7 is 0.8-1.0 cm, preferably 0.9 cm. The third hole 7 is a positioning hole located in the middle of the positioning plate. The second hole is mainly used to distribute the wind speed. The diameter decreases from the third hole outwards. The larger the diameter of the hole, the greater the airflow that can pass through, thereby achieving the purpose of wind distribution.

[0031] In this embodiment, the baffle plate 1 is an arc-shaped alloy plate, which is connected to the positioning plate 2 to form an L-shaped structure. The arc-shaped alloy plate is installed on the air inlet side, effectively blocking the airflow from flowing out from the bottom of the tobacco curing box, thus improving the utilization rate of the airflow. The positioning plate 2 is a high-strength heat-resistant alloy plate, and the positioning plate 2 and the baffle plate 1 are integrally formed. The use of a high-strength heat-resistant alloy plate for integral processing results in good structural stability and better support for the tobacco curing process.

[0032] This device features a plate-like structure made of high-strength, heat-resistant alloy material, with overall dimensions precisely matched to the internal space of the box-type baking equipment. The device is fixed inside the oven via adjustable mounting brackets for easy installation and maintenance. The plate surface undergoes a special coating treatment, providing excellent high-temperature and corrosion resistance, making it suitable for various baking environments.

[0033] The baffle plate 1 is designed as an arc-shaped alloy plate: an arc-shaped baffle plate 1 is designed on the outermost side of the positioning plate 2. The design of this arc-shaped baffle plate 1 is based on the characteristic of box-type baking, which uses an upward airflow baking method, and the air velocity decreases closer to the baking chamber door. The arc-shaped baffle plate 1 can effectively reduce the airflow loss on the outside of the air distribution plate, guide the airflow to be transported upward better, thereby improving the airflow velocity and distribution in the area near the door, and improving the baking effect of the materials in this area.

[0034] Hole distribution structure: Considering the higher wind speed on the left and right sides of the box-type drying oven and the lower wind speed in the middle, the air guide holes on positioning plate 2 were designed differently. For example... Figure 2 As shown, specifically, the diameters of the holes extending outwards from the center are 1.6~1.8cm, 1.2~1.4cm, 0.8~1.0cm, and 0.4~0.6cm respectively. Preferably, the diameters from the center to both sides are 1.8cm, 1.4cm, 0.8cm, and 0.4cm respectively. The 0.4cm hole is close to the air guide pipe, and the 1.8cm hole is located in the middle of the positioning plate. The diameters of the holes on both sides of the positioning plate 2 gradually decrease from the diameter of the middle hole, with the outermost hole having the largest diameter. This, in conjunction with the conical pipe, distributes the airflow from both sides to the inwards. This design results in relatively higher airflow resistance on both sides and relatively lower airflow resistance in the middle when the airflow passes through the air distribution plate, thus promoting airflow towards the center and balancing the airflow velocity in different areas of the oven, allowing the material to be heated more evenly during the baking process.

[0035] Conical air guide ducts: Conical air guide ducts with a certain angle are designed into the holes on both sides of the air distribution plate to form a guiding channel. This guiding channel is inclined towards the center of the air distribution plate, its function being to further guide the airflow towards the center. The guiding angle is 15-25°, which can be adjusted according to the specific application scenario. When the airflow passes through the holes on both sides, the guiding channel can change the direction of airflow, causing the airflow to converge towards the center above the air distribution plate, further improving the uniformity of airflow distribution within the box-type drying oven. Simultaneously, an airflow rectification device is installed at the end of the channel to improve airflow stability.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fan plate for box-type baking, characterized in that: Includes a positioning plate (2), a baffle plate (1) is provided on the side of the positioning plate (2), and a number of air guide holes (3) are provided on the positioning plate (2) to make the air flow uniformly through the oven.

2. The air distribution plate for box baking according to claim 1, characterized in that: The air guide hole (3) includes a first hole (5), a second hole (6) and a third hole (7) arranged sequentially from the outside to the inside, with the third hole (7) located in the middle of the positioning plate (2).

3. The air distribution plate for box baking according to claim 2, characterized in that: The positioning plate (2) is provided with several conical air guide pipes (4) that cooperate with the first hole (5).

4. The air distribution plate for box baking according to claim 3, characterized in that: The conical air duct (4) is inclinedly connected to the upper part of the positioning plate (2), and the inclination angle of the conical air duct (4) is 15~25°.

5. The air distribution plate for box baking according to claim 4, characterized in that: The lower diameter of the conical air guide pipe (4) is larger than the upper diameter of the conical air guide pipe (4). The lower diameter of the conical air guide pipe (4) is 1~2cm, and the upper diameter of the conical air guide pipe (4) is 0.5~1cm.

6. The air distribution plate for box baking according to any one of claims 3 to 5, characterized in that: The distance between the first hole (5) and the outermost part of the positioning plate (2) is 4~6cm.

7. The air distribution plate for box baking according to claim 6, characterized in that: The second hole (6) is located between the first hole (5) and the third hole (7), and the diameter of the second hole (6) is 0.4~0.6cm.

8. The air distribution plate for box baking according to claim 7, characterized in that: The diameter of the third hole (7) is 0.8~1.0cm.

9. The air distribution plate for box baking according to any one of claims 1 to 5, 7, and 8, characterized in that: The wind deflector (1) is an arc-shaped alloy plate, and the arc-shaped alloy plate is connected to the positioning plate (2) to form an L-shaped structure.

10. The air distribution plate for box baking according to claim 9, characterized in that: The positioning plate (2) is a high-strength heat-resistant alloy plate, and the positioning plate (2) and the wind deflector (1) are integrally formed.

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