Air velocity self-constant super-clean workbench

Abstract

This utility model discloses a clean bench with self-constant airflow, relating to the field of clean bench technology. It includes a bench body, with a blower fixedly connected to the outside of the body. A filter is fixedly connected to the bottom of the blower, and an air distribution seat is fixedly connected to the lower side of the filter. An air duct is formed at the bottom of the air distribution seat, and a limiting frame is fixedly connected to the inside of the air distribution seat. A sliding plate is slidably connected between the limiting frame and the air distribution seat, and a misalignment groove is formed on the outside of the sliding plate. A mounting base is fixedly connected to the outside of the bench body, and an adjustment mechanism is installed between the mounting base and the air distribution seat. This clean bench provides a stable airflow by maintaining a constant blower speed and using a motor-driven sliding plate to precisely adjust the gap between the air duct and the misalignment groove, thereby achieving stepless control of the airflow speed under constant airflow, ensuring a stable and suitable airflow environment in the work area.

Description

Technical Field

[0001] This utility model relates to the field of clean bench technology, and in particular to a clean bench with self-constant wind speed. Background Technology

[0002] Clean benches are indispensable basic equipment in modern laboratories, biopharmaceuticals, and precision electronic assembly. Their core function is to effectively isolate the operating area from the external environment by creating a continuous and uniform vertical or horizontal unidirectional airflow, preventing samples from being contaminated by airborne particles or microorganisms. Currently, most traditional clean benches achieve this by using built-in fans to drive air through high-efficiency filters. However, their airflow control methods are usually quite direct and have inherent flaws. A common practice is to directly adjust the fan's operating power or speed to change the airflow volume, thereby roughly adjusting the airflow speed in the working area. Although this direct adjustment method is simple in structure, it is difficult to achieve precise and stable airflow control. Especially when the fan speed changes, the airflow is easily disturbed, disrupting the uniformity and stability of the flow field and affecting the cleanliness effect.

[0003] The existing technical solutions mentioned above have the following main technical problems. First, simply relying on adjusting the fan speed to control the airflow will cause the fan to operate under non-rated conditions, which will not only increase energy consumption, but may also generate greater noise and vibration, affecting the equipment life and user experience. Second, and more importantly, this direct adjustment method is difficult to maintain the uniformity and stability of airflow while changing the airflow speed. When the airflow speed is reduced, the fan power is weakened, which may not be able to form an effective uniform air curtain in the entire working area, creating dead zones. When the airflow speed needs to be increased, turbulence may be formed due to excessive wind force. Therefore, a clean bench with self-constant airflow speed is proposed here. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a clean bench with self-constant wind speed, solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clean bench with self-constant wind speed, comprising a bench body, a blower fixedly connected to the outside of the bench body, a filter fixedly connected to the bottom of the blower, an air distribution seat fixedly connected to the lower side of the filter, an air duct opened at the bottom of the air distribution seat, a limiting frame fixedly connected to the inside of the air distribution seat, a sliding plate slidably connected between the limiting frame and the air distribution seat, an offset groove opened on the outside of the sliding plate, a mounting base fixedly connected to the outside of the bench body, and an adjustment mechanism installed between the mounting base and the air distribution seat.

[0006] As a further technical solution of this utility model, a baffle is fixedly connected between the filter and the main body of the workbench.

[0007] As a further technical solution of this utility model, the number of the air ducts and the misaligned slots are several groups arranged at equal intervals, and the air ducts and the misaligned slots are matched and installed in a misaligned manner.

[0008] As a further technical solution of this utility model, the adjustment mechanism includes a drive motor, a lead screw, a fixed plate, and a connecting block. The drive motor is fixedly connected to the inner side of the mounting base, the lead screw is fixedly connected to the output end of the drive motor, the fixed plate is fixedly connected to the lower side of the filter, and the end of the lead screw is rotatably connected to the outside of the fixed plate. The connecting block is fixedly connected to the upper side of the slide plate, and the connecting block is threadedly connected to the outside of the lead screw.

[0009] As a further technical solution of this utility model, an installation groove is provided on the inner side of the main body of the workbench, and an ultraviolet germicidal lamp is fixedly connected to the inner side of the installation groove.

[0010] As a further technical solution of this utility model, a transparent plate is fixedly connected to the inner side of the mounting groove, and the transparent plate completely covers the ultraviolet germicidal lamp.

[0011] As a further technical solution of this utility model, a PLC processor is fixedly connected to the outside of the filter, and the PLC processor is connected to the blower, the filter, the drive motor and the ultraviolet germicidal lamp through communication.

[0012] As a further technical solution of this utility model, a support frame is fixedly connected to the bottom of the main body of the workbench.

[0013] This invention provides a clean bench with self-constant wind speed, which has the following advantages compared with the prior art: 1. This design features a self-constant airflow clean bench that provides a stable air source by maintaining a constant blower speed. This effectively avoids airflow turbulence and noise problems caused by blower speed fluctuations. This not only ensures the uniformity and stability of the clean air curtain in the working area and improves the reliability of the operating environment, but also makes the equipment operate more quietly and smoothly, and extends the service life of the core components.

[0014] 2. This design features a self-constant airflow clean bench that uses a sliding plate to precisely adjust the air outlet gap, achieving precise stepless control of airflow speed under constant air volume. Operators can flexibly adjust the airflow speed to the most suitable level according to actual needs, ensuring effective pollution isolation while avoiding turbulence caused by excessively high airflow speed or dead zones caused by excessively low airflow speed, significantly improving the applicability and energy efficiency of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial front sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of A in the middle; Figure 4 for Figure 2 Enlarged view of B in the middle; Figure 5 This is a partial side sectional view of the present invention.

[0016] In the diagram: 1. Main body of the workbench; 2. Blower; 3. Filter; 4. Baffle; 5. Air distribution seat; 6. Air duct; 7. Limit frame; 8. Slide plate; 9. Misalignment groove; 10. Mounting base; 11. Drive motor; 12. Lead screw; 13. Fixing plate; 14. Connecting block; 15. Mounting groove; 16. Ultraviolet germicidal lamp; 17. Transparent plate; 18. PLC processor; 19. Support frame. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 This utility model provides a clean bench with self-constant airflow, including a bench body 1. The bench body 1 serves as the core structural frame of the entire equipment, providing the installation foundation and support for other functional components. A blower 2 is fixedly connected to the outside of the bench body 1. The blower 2 serves as the airflow power source, responsible for continuously drawing external air into the equipment. A filter 3 is fixedly connected to the bottom of the blower 2. The filter 3 serves as the core of air purification, effectively filtering out dust particles and microorganisms in the air to ensure the cleanliness of the output airflow. A baffle 4 is fixedly connected between the filter 3 and the bench body 1. The baffle 4 serves as an airflow guide and spatial isolation, preventing unfiltered air from short-circuiting into the work area. A support frame 19 is fixedly connected to the bottom of the bench body 1. The support frame 19 provides stable ground support for the equipment while maintaining ventilation space at the bottom.

[0019] like Figure 2 as well as Figure 3As shown, a distribution seat 5 is fixedly connected to the lower side of the filter 3. The distribution seat 5 serves as an airflow distribution chamber, which can distribute the filtered clean air at equal pressure. An air duct 6 is opened at the bottom of the distribution seat 5. The air duct 6 serves as the final outlet of the airflow, forming a uniformly distributed vertical laminar flow curtain. A limiting frame 7 is fixedly connected to the inner side of the distribution seat 5. The limiting frame 7 provides a precise sliding track for the slide plate 8, ensuring the stability of its translational movement. The slide plate 8 is slidably connected between the limiting frame 7 and the distribution seat 5. The slide plate 8 is a key component for wind speed adjustment. The air outlet area is changed by horizontal displacement. The outside of the slide plate 8 is provided with a misaligned groove 9. The misaligned groove 9 cooperates with the air duct 6 to form an adjustable air outlet gap. There are several sets of air ducts 6 and misaligned grooves 9, which are arranged at equal intervals. The air ducts 6 and misaligned grooves 9 are matched and installed in a misaligned manner. This misaligned layout allows for continuous change of the air outlet cross-section by adjusting the overlapping area.

[0020] like Figure 2 as well as Figure 4 As shown, a mounting base 10 is fixedly connected to the outside of the workbench body 1. The mounting base 10 serves as the support base for the drive component, ensuring the stability of the motor installation. An adjustment mechanism is installed between the mounting base 10 and the air distribution seat 5. The adjustment mechanism includes a drive motor 11, a lead screw 12, a fixing plate 13, and a connecting block 14. The drive motor 11 serves as a power source to provide precise rotational motion. The drive motor 11 is fixedly connected to the inside of the mounting base 10. The lead screw 12 is fixedly connected to the output end of the drive motor 11. The lead screw 12 serves as a motion conversion component, converting the rotational motion of the motor into linear displacement. The fixing plate 13 is fixedly connected to the lower side of the filter 3, and the end of the lead screw 12 is rotatably connected to the outside of the fixing plate 13. The fixing plate 13 provides end support for the lead screw 12, ensuring the stability of the transmission system. The connecting block 14 is fixedly connected to the upper side of the slide plate 8, and the connecting block 14 is threadedly connected to the outside of the lead screw 12. The connecting block 14 serves as a motion connector, converting the rotational motion of the lead screw 12 into precise linear movement of the slide plate 8.

[0021] like Figure 1 as well as Figure 5 As shown, the inner side of the workbench body 1 is provided with an installation groove 15, which provides a safe embedding space for the sterilization component. An ultraviolet germicidal lamp 16 is fixedly connected to the inner side of the installation groove 15. The ultraviolet germicidal lamp 16 can thoroughly sterilize the work area before operation and eliminate the risk of microbial contamination. A transparent plate 17 is fixedly connected to the inner side of the installation groove 15, and the transparent plate 17 completely covers the ultraviolet germicidal lamp 16. The transparent plate 17 protects the ultraviolet germicidal lamp 16 from contamination while ensuring that ultraviolet light can be effectively transmitted.

[0022] like Figure 1 as well as Figure 5As shown, the filter 3 is externally fixedly connected to a PLC processor 18. The PLC processor 18 serves as the intelligent control center of the equipment, coordinating the collaborative work of various functional components. Furthermore, the PLC processor 18 is connected to the blower 2, the filter 3, the drive motor 11, and the ultraviolet germicidal lamp 16 via communication. This system-wide communication connection enables the equipment to automatically adjust its operating parameters according to preset programs or real-time feedback, thereby achieving intelligent operation.

[0023] The working principle of this utility model is as follows: When the ultra-clean workbench with constant wind speed is working, the blower 2 first continuously draws external air into the workbench body 1. This air then passes through the filter 3 for precision filtration, removing dust, bacteria and other pollutants to form a clean airflow. After that, the clean air is delivered to the air distribution seat 5 for pressure equalization and distribution, and finally blown downward through several air ducts 6 opened at the bottom of the air distribution seat 5, forming a vertically downward clean air curtain in the operating area. Its core function of constant wind speed is to maintain the blower 2 at a constant speed, thereby ensuring the stability of the airflow power at the source.

[0024] When wind speed needs to be adjusted, the adjustment mechanism can be activated. Specifically, the operation of the drive motor 11 will drive the lead screw 12 to rotate. Since the connecting block 14 fixed to the slide plate 8 and the lead screw 12 form a threaded pair, and the slide plate 8 itself is restricted between the limit frame 7 and the air distribution seat 5, it can only slide horizontally. Therefore, the rotational movement of the lead screw 12 is converted into the precise horizontal movement of the slide plate 8. By controlling the direction and angle of the drive motor 11, the translation distance of the slide plate 8 can be precisely controlled, thereby changing the overlap area between the misaligned groove 9 opened on the slide plate 8 and the air duct 6 at the bottom of the air distribution seat 5. This overlap gap is equivalent to an adjustable air valve. The change of its opening degree realizes the precise control of the air outlet cross-sectional area. Thus, under the premise that the blower 2 provides a constant air volume, the stepless adjustment of the downward conveying wind speed can be realized, ensuring that the working area is always in the most suitable wind speed environment.

[0025] In addition, the ultraviolet germicidal lamp 16 integrated in the mounting slot 15 can sterilize the work surface before operation through the transparent plate 17, while the PLC processor 18 intelligently coordinates the blower 2, drive motor 11 and ultraviolet germicidal lamp 16 and other components to achieve automated control.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A clean bench with self-constant wind speed, characterized in that, The system includes a workbench body (1), a blower (2) is fixedly connected to the outside of the workbench body (1), a filter (3) is fixedly connected to the bottom of the blower (2), an air distribution seat (5) is fixedly connected to the lower side of the filter (3), an air duct (6) is opened at the bottom of the air distribution seat (5), a limit frame (7) is fixedly connected to the inside of the air distribution seat (5), a sliding plate (8) is slidably connected between the limit frame (7) and the air distribution seat (5), an offset groove (9) is opened on the outside of the sliding plate (8), an installation seat (10) is fixedly connected to the outside of the workbench body (1), and an adjustment mechanism is installed between the installation seat (10) and the air distribution seat (5).

2. The clean bench with self-constant wind speed according to claim 1, characterized in that, A baffle (4) is fixedly connected between the filter (3) and the workbench body (1).

3. The clean bench with self-constant wind speed according to claim 1, characterized in that, The number of air ducts (6) and the number of misaligned grooves (9) are several groups arranged at equal intervals, and the air ducts (6) and the misaligned grooves (9) are matched and installed in a misaligned manner.

4. The clean bench with self-constant wind speed according to claim 1, characterized in that, The adjustment mechanism includes a drive motor (11), a lead screw (12), a fixing plate (13), and a connecting block (14). The drive motor (11) is fixedly connected to the inner side of the mounting base (10). The lead screw (12) is fixedly connected to the output end of the drive motor (11). The fixing plate (13) is fixedly connected to the lower side of the filter (3), and the end of the lead screw (12) is rotatably connected to the outside of the fixing plate (13). The connecting block (14) is fixedly connected to the upper side of the slide plate (8), and the connecting block (14) is threaded to the outside of the lead screw (12).

5. A clean bench with self-constant wind speed according to claim 1, characterized in that, An installation groove (15) is provided on the inner side of the main body (1) of the workbench, and an ultraviolet germicidal lamp (16) is fixedly connected to the inner side of the installation groove (15).

6. The clean bench with self-constant wind speed according to claim 5, characterized in that, A transparent plate (17) is fixedly connected to the inner side of the mounting groove (15), and the transparent plate (17) completely covers the ultraviolet germicidal lamp (16).

7. A clean bench with self-constant wind speed according to claim 6, characterized in that, The filter (3) is externally fixedly connected to a PLC processor (18), and the PLC processor (18) is connected to the blower (2), the filter (3), the drive motor (11) and the ultraviolet germicidal lamp (16) via communication.

8. The clean bench with self-constant wind speed according to claim 1, characterized in that, The bottom of the workbench body (1) is fixedly connected to a support frame (19).

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