A hot air uniform delivery channel

Abstract

This utility model discloses a uniform hot air delivery channel, including a main ventilation pipe, an air inlet pipe at the rear of the main ventilation pipe, and three ventilation branch pipes fixedly connected to both sides of the main ventilation pipe. Each ventilation branch pipe has N air outlets on its front side. Two arc-shaped covers are respectively installed in the middle of the inner cavity of the main ventilation pipe, covering the inlets of the two ventilation branch pipes located in the middle. The two arc-shaped covers are located at the left and right ends of the air outlets of the air inlet pipes, and their rear sides are connected to the air inlet pipes. The horizontal length of each arc-shaped cover is one-sixth of the horizontal length of the air outlet of the air inlet pipe. N arc-shaped air guide plates are fixedly installed inside the ventilation branch pipes, with the outlet ends of the arc-shaped air guide plates corresponding to the air outlets. This utility model overcomes the shortcomings of the prior art, allowing hot air to be gradually separated and guided to each air outlet, ensuring uniform hot air distribution, and further avoiding the problem of excessively high or low local temperatures inside the drying chamber.

Description

Technical Field

[0001] This utility model relates to the field of hot air conveying technology, specifically to a hot air uniform conveying channel. Background Technology

[0002] Currently, the drying process for materials is typically carried out inside a drying chamber. By installing multiple hot air vents on the side walls of the drying chamber, hot air is evenly distributed throughout the chamber, ensuring uniform heating of the materials and improving drying efficiency.

[0003] However, most existing drying chambers on the market currently employ a single-inlet straight-through structure for their hot air delivery channels. This design presents a significant problem: the airflow velocity decreases gradually with distance as the hot air passes through these channels. This results in a relatively large airflow near the vent and a relatively small airflow further away. This uneven airflow distribution leads to differences in airflow at different locations within the chamber. Consequently, the temperature varies considerably between different areas inside the chamber due to these differences in airflow, ultimately affecting the drying quality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a uniform hot air delivery channel, which overcomes the deficiencies of existing technologies. The design is reasonable and allows hot air to be gradually separated and guided to each air outlet, ensuring uniform distribution of hot air and further avoiding the problem of excessively high or low local temperatures inside the drying chamber.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A uniform hot air delivery channel includes a main ventilation pipe. An air inlet pipe is vertically arranged in the middle of the rear side of the main ventilation pipe. The inner cavity of the air inlet pipe is connected to the inner cavity of the main ventilation pipe. Three ventilation branch pipes are horizontally fixedly connected to the left and right sides of the main ventilation pipe. The three ventilation branch pipes are respectively arranged at the upper end, middle and lower end of the left and right sides of the main ventilation pipe. The inner cavity of the ventilation branch pipe is connected to the inner cavity of the main ventilation pipe. N air outlets are opened on the front side of each ventilation branch pipe, where N≥2.

[0007] Two arc-shaped covers are respectively installed in the middle of the inner cavity of the main ventilation duct. The arc-shaped covers are respectively installed at the inlet of the two ventilation branch ducts located in the middle. The two arc-shaped covers are located at the left and right ends of the air outlet of the air inlet duct, and the rear side of the arc-shaped covers is connected to the air inlet duct. The horizontal length of each arc-shaped cover is one-sixth of the horizontal length of the air outlet of the air inlet duct.

[0008] N arc-shaped air guide plates are fixedly installed inside the ventilation branch pipe, and the outlet end of the arc-shaped air guide plate corresponds to the air blowing port.

[0009] Preferably, the arc-shaped air guide plate is a quarter-circle arc plate structure, the radius of the arc-shaped air guide plate increases sequentially from the direction closer to the main ventilation pipe to the direction farther away from the main ventilation pipe, and the front side of the arc-shaped air guide plate is closely attached to the front side wall of the ventilation branch pipe.

[0010] Preferably, the radius of the arc-shaped air guide plate closest to the main ventilation duct is 1 / N of the front and rear length of the ventilation branch duct, and the radius of the remaining arc-shaped air guide plates increases sequentially.

[0011] This invention provides a uniform hot air delivery channel with the following advantages: Hot air enters through the inlet duct and is guided and separated by an arc-shaped cover, ensuring that one-third of the hot air is evenly distributed into the two ventilation branch ducts in the middle of the main ventilation duct, while the remaining hot air is evenly distributed into the ventilation branch ducts at the upper and lower ends of the main ventilation duct. This ensures a uniform distribution of hot air volume in each ventilation branch duct, effectively preventing localized overheating or undercooling. Furthermore, by installing arc-shaped air guide plates inside the ventilation branch ducts and controlling the increasing radius of each arc-shaped air guide plate within the same ventilation branch duct, the hot air is gradually separated and guided to each air outlet after entering the ventilation branch duct, ensuring uniform hot air distribution. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.

[0013] Figure 1 Structural diagram of this utility model Figure 1 ;

[0014] Figure 2 Structural diagram of this utility model Figure 2 ;

[0015] Figure 3 A cross-sectional structural diagram of this utility model;

[0016] Explanation of the labels in the diagram:

[0017] 1. Main ventilation duct; 2. Air inlet duct; 3. Ventilation branch duct; 4. Arc-shaped hood; 5. Air outlet; 6. Arc-shaped air guide plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0019] Example 1, as Figure 1-3As shown, a uniform hot air delivery channel includes a main ventilation pipe 1. An air inlet pipe 2 is vertically arranged in the middle of the rear side of the main ventilation pipe 1. The inner cavity of the air inlet pipe 2 is connected to the inner cavity of the main ventilation pipe 1. Three ventilation branch pipes 3 are horizontally fixedly connected to the left and right sides of the main ventilation pipe 1. The three ventilation branch pipes 3 are respectively arranged at the upper end, middle and lower end of the left and right sides of the main ventilation pipe 1. The inner cavity of the ventilation branch pipe 3 is connected to the inner cavity of the main ventilation pipe 1. N air outlets 5 are opened on the front side of each ventilation branch pipe 3, where N≥2.

[0020] Two arc-shaped covers 4 are respectively installed in the middle of the inner cavity of the main ventilation pipe 1. The arc-shaped covers 4 are respectively installed at the inlet of the two ventilation branch pipes 3 located in the middle. The two arc-shaped covers 4 are located at the left and right ends of the air outlet of the air inlet pipe 2, and the rear side of the arc-shaped covers 4 is connected to the air inlet pipe 2. The horizontal length of each arc-shaped cover 4 is one-sixth of the horizontal length of the air outlet of the air inlet pipe 2.

[0021] Each ventilation branch pipe 3 is fixedly installed with N arc-shaped air guide plates 6, and the outlet end of the arc-shaped air guide plate 6 corresponds to the air outlet 5.

[0022] Working principle:

[0023] During operation, hot air enters through the air inlet duct 2 and is guided and separated at the air outlet of the air inlet duct 2 by the arc-shaped cover 4. This ensures that one-third of the hot air is evenly distributed into the two ventilation branch ducts 3 in the middle of the main ventilation duct 1, while the remaining hot air, after entering the main ventilation duct 1, flows upward and downward respectively, thus evenly distributing the remaining hot air into the ventilation branch ducts 3 at the upper and lower ends of the main ventilation duct 1. This ensures a uniform distribution of hot air volume in each ventilation branch duct 3, effectively avoiding local overheating or undercooling. In addition, by installing arc-shaped air guide plates 6 inside the ventilation branch ducts 3, with their outlets corresponding to the air outlets 5, the guidance of hot air is further optimized, ensuring that hot air can be evenly distributed to the target area through each air outlet 5, preventing hot air from being concentrated at the bottom of the ventilation branch ducts 3.

[0024] In this embodiment, the arc-shaped air guide plate 6 is a quarter-circle arc plate structure. The radius of the arc-shaped air guide plate 6 increases sequentially from the direction closer to the main ventilation pipe 1 to the direction farther away from the main ventilation pipe 1, and the front side of the arc-shaped air guide plate 6 is in close contact with the front side wall of the ventilation branch pipe 3. Therefore, by controlling the incremental design of the radius of each arc-shaped air guide plate 6 in the same ventilation branch pipe 3, the hot air can be gradually separated and guided to each air outlet 5 after entering the ventilation branch pipe 3, ensuring uniform distribution of hot air, thereby further avoiding the problem of excessively high or low local temperature inside the drying chamber.

[0025] In Example 2, as a further preferred embodiment of Example 1, the radius of the arc-shaped air guide plate 6 near the main ventilation duct 1 is 1 / N of the front-to-back length of the ventilation branch duct 3, and the radii of the remaining arc-shaped air guide plates 6 increase sequentially in increments of 1 / N of the front-to-back length of the ventilation branch duct 3, thus forming an increasing gradient. Specifically, when N is 2, the radius of the arc-shaped air guide plate 6 near the main ventilation duct 1 is 1 / 2 of the front-to-back length of the ventilation branch duct 3, while the radius of the arc-shaped air guide plate 6 away from the main ventilation duct 1 is equal to the front-to-back length of the ventilation branch duct 3. Therefore, when hot air enters the ventilation branch duct 3, it is first separated by the side of the arc-shaped air guide plate 6 near the main ventilation duct 1, so that half of the hot air is guided by the arc-shaped air guide plate 6 to the corresponding air outlet 5, while the other half of the hot air continues to flow forward and is finally guided by the arc-shaped air guide plate 6 away from the main ventilation duct 1 to the air outlet 5 on the other side, ensuring that the hot air volume of the two air outlets 5 is balanced. When N is 3, the radius of the arc-shaped air guide plate 6 closest to the main ventilation duct 1 is 1 / 3 of the front-to-back length of the ventilation branch duct 3, the radius of the middle arc-shaped air guide plate 6 is 2 / 3 of the front-to-back length of the ventilation branch duct 3, and the radius of the arc-shaped air guide plate 6 furthest from the main ventilation duct 1 is equal to the front-to-back length of the ventilation branch duct 3. Therefore, when hot air enters the ventilation branch duct 3, it is first separated by the arc-shaped air guide plate 6 closest to the main ventilation duct 1, with 1 / 3 of the hot air being guided to the first air outlet 5. The remaining hot air continues to flow and is again separated by the middle arc-shaped air guide plate, with 1 / 3 of the hot air being guided to the second air outlet 5. Finally, the remaining hot air is guided by the farthest arc-shaped air guide plate 6 to the third air outlet, thus achieving a balanced distribution of hot air volume across the three air outlets. Similarly, when N is 4 or more, the radius of each arc-shaped air guide plate 6 increases sequentially to ensure that the hot air is separated step by step and evenly guided to each air outlet 5, thereby achieving a balanced distribution of hot air volume from multiple air outlets and further optimizing the uniformity of temperature distribution inside the drying chamber.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hot air uniform delivery channel characterized by: Includes a main ventilation pipe (1), an air inlet pipe (2) is vertically arranged in the middle of the rear side of the main ventilation pipe (1), the inner cavity of the air inlet pipe (2) is connected to the inner cavity of the main ventilation pipe (1), three ventilation branch pipes (3) are horizontally fixedly connected to the left and right sides of the main ventilation pipe (1), the three ventilation branch pipes (3) are respectively arranged at the upper end, middle and lower end of the left and right sides of the main ventilation pipe (1), the inner cavity of the ventilation branch pipe (3) is connected to the inner cavity of the main ventilation pipe (1), and N air outlets (5) are opened on the front side of each ventilation branch pipe (3), where N≥2; Two arc-shaped covers (4) are respectively installed in the middle of the inner cavity of the main ventilation pipe (1). The arc-shaped covers (4) are respectively installed at the inlet of the two ventilation branch pipes (3) located in the middle. The two arc-shaped covers (4) are respectively located at the left and right ends of the air outlet of the air inlet pipe (2), and the rear side of the arc-shaped covers (4) is connected to the air inlet pipe (2). The horizontal length of each arc-shaped cover (4) is one-sixth of the horizontal length of the air outlet of the air inlet pipe (2). N arc-shaped air guide plates (6) are fixedly installed inside the ventilation branch pipe (3), and the outlet end of the arc-shaped air guide plate (6) corresponds to the air blowing port (5).

2. A hot air uniform delivery channel according to claim 1, wherein: The arc-shaped air guide plate (6) is a quarter-circle arc plate structure. The radius of the arc-shaped air guide plate (6) increases sequentially from the direction closer to the main ventilation pipe (1) to the direction farther away from the main ventilation pipe (1). The front side of the arc-shaped air guide plate (6) is closely attached to the front side wall of the ventilation branch pipe (3).

3. A hot air uniform delivery channel according to claim 2, wherein: The radius of the arc-shaped air guide plate (6) close to the main ventilation pipe (1) is 1 / N of the front and rear length of the ventilation branch pipe (3), and the radius of the remaining arc-shaped air guide plates (6) increases sequentially.

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