Exhaust fan for clean room

Abstract

The utility model discloses a clean room exhaust fan, including mounting panel, the inner wall fixed communication of mounting panel has the exhaust pipe, the bottom of exhaust pipe inside is provided with exhaust fan, the bottom of exhaust fan is provided with filter screen, the inner wall of positioning mechanism and the bottom of exhaust fan surface, positioning mechanism includes horizontal plate, the inner wall of horizontal plate and the bottom of exhaust fan surface fixed connection, filter screen is located the inside of horizontal plate, and horizontal plate is located the bottom of exhaust pipe. The utility model discloses a positioning mechanism fixes exhaust fan in the bottom of exhaust pipe, prevents exhaust fan from separating from exhaust pipe, then makes the position of limiting component to filter screen and limits, prevents filter screen from separating from exhaust fan, and this clean room exhaust fan has the advantages of being convenient to install, improves the stability of exhaust fan, and the installation process is simple, and the construction time and cost of user are reduced, and the phenomenon that the user is hurt by the loosening and falling of exhaust fan is prevented.

Description

Technical Field

[0001] This utility model relates to the field of cleanroom technology, specifically to an exhaust fan for cleanrooms. Background Technology

[0002] Cleanrooms refer to well-sealed spaces where parameters such as air cleanliness, temperature, humidity, pressure, and noise are controlled as needed. The environmental requirements of industries such as precision machinery (e.g., gyroscope and micro-bearing processing) and semiconductors (e.g., large-scale integrated circuit production) have spurred the development of cleanroom technology. Currently, cleanrooms are widely used in industries such as precision machinery, semiconductors, aerospace, and nuclear energy. Exhaust fans are air conditioning appliances that use an electric motor to rotate blades and drive airflow, exchanging indoor and outdoor air. Also known as ventilation fans, their purpose is to remove polluted indoor air and regulate temperature and humidity; they are widely used in homes and public places.

[0003] Cleanrooms are an essential part of factories. During use, to maintain positive pressure and prevent contaminants from seeping into the cleanroom, and to control the temperature, exhaust fans are necessary. A search revealed Chinese patent CN219733658U, which discloses an industrial exhaust fan, belonging to the field of industrial exhaust fan technology. It includes a bracket and fan blades. The bracket has a mounting part for installing the fan blades, and an air duct is provided on the outer side of the mounting part. Each air duct contains... An accelerating air duct runs through the entire air duct section, and the air outlet of the accelerating air duct is located at the air outlet of the fan blades. An arc-shaped bend is provided inside the accelerating air duct. One side of the arc-shaped bend is connected to the air inlet of the accelerating air duct, and the other side of the arc-shaped bend is connected to the air outlet, so that the angle between the air inlet and the air outlet is 90°. By providing an accelerating air duct, the exhaust speed of the industrial exhaust fan is increased, and by providing arc-shaped bends on the air inlet and outlet ducts, the airflow is made smoother.

[0004] The existing technical solutions mentioned above have the following drawbacks: In most cases, the exhaust fan is installed and fixed by bolts during use. The installation process is cumbersome, which not only increases the user's construction time and cost, but also causes the bolts to be damaged or stripped due to improper operation by the user, resulting in unstable connection of the exhaust fan, loosening and falling off and injuring the user. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide an exhaust fan for cleanrooms that is easy to install, thus solving the problem that most exhaust fans are installed and fixed with bolts, which is a cumbersome installation process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an exhaust fan for a cleanroom, including a mounting plate, an exhaust pipe fixedly connected to the inner wall of the mounting plate, an exhaust fan disposed at the bottom inside the exhaust pipe, and a filter screen disposed at the bottom of the exhaust fan;

[0007] A positioning mechanism includes a horizontal plate, the inner wall of which is fixedly connected to the bottom of the exhaust fan surface. The filter screen is located inside the horizontal plate, which is located at the bottom of the exhaust pipe. Vertical rods are provided at the four corners inside the horizontal plate, and the tops of the vertical rods are fixedly connected to the bottom of the exhaust pipe. Locking blocks are provided on both sides inside the horizontal plate, with the right side of the locking block penetrating into the interior of the vertical rod and the bottom of the locking block penetrating into the bottom of the horizontal plate. Connecting blocks are fixedly connected to the front and back of the locking blocks, and a limit assembly is slidably connected to the bottom of the horizontal plate.

[0008] In a preferred embodiment of this utility model, the limiting component includes a frame, the top of which is slidably connected to the bottom of the horizontal plate, and limiting blocks are movably connected to both sides of the frame via rotating shafts, with the top of the limiting blocks extending through the interior of the horizontal plate.

[0009] As a preferred embodiment of this utility model, sliders are fixedly connected to the four corners of the top of the frame, and a groove is provided at the bottom of the horizontal plate to cooperate with the sliders.

[0010] As a preferred embodiment of this utility model, the surface of the vertical rod is provided with a slot for cooperating with the locking block, and the bottom of the horizontal plate is provided with a movable hole for cooperating with the locking block.

[0011] As a preferred embodiment of this utility model, the bottom of the horizontal plate is provided with a limiting groove for use with the limiting block, a partition net is fixedly connected horizontally inside the frame, and a spring piece is provided on the top of the limiting block, with the top of the spring piece fixedly connected to the inner wall of the frame.

[0012] As a preferred embodiment of this utility model, springs are fixedly connected to the front and rear sides of the left side of the card block, the left side of the springs is fixedly connected to the inner wall of the horizontal plate, and a protective net is fixedly connected to the top of the exhaust fan.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a positioning mechanism to fix the exhaust fan to the bottom of the exhaust pipe, preventing the exhaust fan from detaching from the exhaust pipe. Then, the limiting component limits the position of the filter screen, preventing the filter screen from detaching from the exhaust fan. This cleanroom exhaust fan has the advantage of easy installation, improves the stability of the exhaust fan, and simplifies the installation process, reducing the user's construction time and cost, and preventing the exhaust fan from loosening, falling off, and injuring the user.

[0015] 2. This utility model can limit the position of the filter screen by setting the limiting component, so as to prevent the filter screen from falling off the exhaust fan; by using the slider and the slide groove together, the friction between the frame and the horizontal plate can be reduced, while preventing the frame from falling off the horizontal plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A three-dimensional structural diagram of the central exhaust pipe;

[0018] Figure 3 This utility model Figure 2 Exploded view of the central exhaust fan structure;

[0019] Figure 4 This utility model Figure 3 Exploded view of the middle horizontal plate structure;

[0020] Figure 5 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0021] In the diagram: 1. Mounting plate; 2. Exhaust pipe; 3. Exhaust fan; 4. Filter screen; 5. Positioning mechanism; 501. Horizontal plate; 502. Vertical rod; 503. Locking block; 504. Connecting block; 505. Limiting component; 505a. Frame; 505b. Limiting block; 6. Slider; 7. Slide groove; 8. Locking groove; 9. Limiting groove; 10. Partition net; 11. Spring; 12. Spring; 13. Protective net. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 5 As shown, the present invention provides an exhaust fan for a cleanroom, including a mounting plate 1, an exhaust pipe 2 fixedly connected to the inner wall of the mounting plate 1, an exhaust fan 3 provided at the bottom inside the exhaust pipe 2, and a filter screen 4 provided at the bottom of the exhaust fan 3.

[0024] The positioning mechanism 5 includes a horizontal plate 501, the inner wall of which is fixedly connected to the bottom of the surface of the exhaust fan 3. The filter screen 4 is located inside the horizontal plate 501. The horizontal plate 501 is located at the bottom of the exhaust pipe 2. Vertical rods 502 are provided at the four corners inside the horizontal plate 501. The top of the vertical rods 502 is fixedly connected to the bottom of the exhaust pipe 2. Locking blocks 503 are provided on both sides inside the horizontal plate 501. The right side of the locking block 503 extends into the interior of the vertical rod 502, and the bottom of the locking block 503 extends into the bottom of the horizontal plate 501. Connecting blocks 504 are fixedly connected to the front and back of the locking block 503. A limit assembly 505 is slidably connected to the bottom of the horizontal plate 501.

[0025] refer to Figure 5 The limiting component 505 includes a frame 505a, the top of which is slidably connected to the bottom of the horizontal plate 501. Both sides inside the frame 505a are movably connected to limiting blocks 505b via pivots, and the top of the limiting blocks 505b extends through the interior of the horizontal plate 501.

[0026] As a technical optimization of this utility model, the position of the filter screen 4 can be limited by the setting of the limiting component 505 to prevent the filter screen 4 from falling off the exhaust fan 3.

[0027] refer to Figure 4 The four corners of the top of the frame 505a are fixedly connected with sliders 6, and the bottom of the horizontal plate 501 is provided with a groove 7 that works with the sliders 6.

[0028] As a technical optimization of this utility model, the combined use of slider 6 and groove 7 can reduce the friction between frame 505a and horizontal plate 501, and at the same time prevent frame 505a from detaching from horizontal plate 501.

[0029] refer to Figure 4 The surface of the vertical rod 502 is provided with a slot 8 for use with the locking block 503, and the bottom of the horizontal plate 501 is provided with an movable hole for use with the locking block 503.

[0030] As a technical optimization of this utility model, the setting of the slot 8 can prevent the exhaust fan 3 and the horizontal plate 501 from detaching from the exhaust pipe 2. The setting of the movable hole can reduce the friction between the locking block 503 and the horizontal plate 501, and at the same time facilitate the movement of the locking block 503.

[0031] refer to Figure 4 The bottom of the horizontal plate 501 is provided with a limiting groove 9 that works with the limiting block 505b. The frame 505a is horizontally fixedly connected with a partition net 10. The top of the limiting block 505b is provided with a spring piece 11, and the top of the spring piece 11 is fixedly connected to the inner wall of the frame 505a.

[0032] As a technical optimization of this utility model, the position of the frame 505a can be limited by the setting of the limiting groove 9, the position of the filter screen 4 can be positioned by the setting of the partition 10 to prevent the filter screen 4 from falling off the frame 505a, and the setting of the spring piece 11 can facilitate the reset of the limiting block 505b, so that the limiting block 505b can rotate when it is not needed.

[0033] refer to Figure 4 Springs 12 are fixedly connected to the front and rear sides of the left side of the card block 503. The left side of the spring 12 is fixedly connected to the inner wall of the horizontal plate 501. A protective net 13 is fixedly connected to the top of the exhaust fan 3.

[0034] As a technical optimization of this utility model, the spring 12 facilitates the reset of the locking block 503 and the connecting block 504, allowing the locking block 503 to move when it is not needed. The protective net 13 protects the fan blades of the exhaust fan 3, preventing debris from entering the interior of the exhaust fan 3.

[0035] The working principle and usage process of this utility model are as follows: When in use, the user lifts the limiting block 505b upwards, causing the limiting block 505b to rotate counterclockwise around the rotating shaft, so that the limiting block 505b disengages from the limiting groove. The limiting block 505b rotates and compresses the spring 11. Then, the user pulls the frame 505a to the left and simultaneously pulls the frame 505a downwards, causing the slider 6 to disengage from the slide groove 7 and the frame 505a to disengage from the horizontal plate 501. Then, the user pulls the filter screen 4 downwards, causing the filter screen 4 to disengage from the horizontal plate 501. At this time, the filter screen 4 can be disassembled and replaced. After that, the user pulls the locking block 503 to the left, causing the locking block 503 to disengage from the locking groove 8. The locking block 503 moves to the left and compresses the spring 12. Then, the user pulls the horizontal plate 501 downwards, causing the vertical rod 502 to disengage from the horizontal plate 501 and the exhaust fan 3 to disengage from the exhaust pipe 2. At this time, the exhaust fan 3 can be disassembled. During installation, the operation is reversed to fix the position of the exhaust fan 3.

[0036] In summary, this cleanroom exhaust fan uses a positioning mechanism 5 to fix the exhaust fan 3 to the bottom of the exhaust pipe 2, preventing the exhaust fan 3 from detaching from the exhaust pipe 2. Then, the limiting component 505 limits the position of the filter screen 4, preventing the filter screen 4 from detaching from the exhaust fan 3. This solves the problem that most exhaust fans are installed and fixed with bolts, which is cumbersome, increases the user's construction time and cost, and can also lead to bolt damage or stripping due to improper operation, resulting in unstable exhaust fan connections, loosening, falling off, and injuring users.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust fan for a cleanroom, comprising a mounting plate (1), wherein an exhaust pipe (2) is fixedly connected to the inner wall of the mounting plate (1), an exhaust fan (3) is disposed at the bottom inside the exhaust pipe (2), and a filter screen (4) is disposed at the bottom of the exhaust fan (3), characterized in that: The positioning mechanism (5) includes a horizontal plate (501), the inner wall of which is fixedly connected to the bottom of the surface of the exhaust fan (3), the filter (4) is located inside the horizontal plate (501), the horizontal plate (501) is located at the bottom of the exhaust pipe (2), and vertical rods (502) are provided at the four corners inside the horizontal plate (501). The top of the vertical rods (502) is fixedly connected to the bottom of the exhaust pipe (2). Both sides inside the horizontal plate (501) are provided with locking blocks (503). The right side of the locking block (503) extends through the interior of the vertical rod (502), and the bottom of the locking block (503) extends through the bottom of the horizontal plate (501). Connecting blocks (504) are fixedly connected to the front and back of the locking block (503), and a limit assembly (505) is slidably connected to the bottom of the horizontal plate (501).

2. The exhaust fan for cleanrooms according to claim 1, characterized in that: The limiting component (505) includes a frame (505a), the top of which is slidably connected to the bottom of the horizontal plate (501), and both sides inside the frame (505a) are movably connected to limiting blocks (505b) via rotating shafts, the top of which extends through the interior of the horizontal plate (501).

3. The exhaust fan for cleanrooms according to claim 2, characterized in that: The four corners of the top of the frame (505a) are fixedly connected with sliders (6), and the bottom of the horizontal plate (501) is provided with a groove (7) that works with the sliders (6).

4. The exhaust fan for cleanrooms according to claim 1, characterized in that: The surface of the vertical rod (502) is provided with a slot (8) for use with the locking block (503), and the bottom of the horizontal plate (501) is provided with a movable hole for use with the locking block (503).

5. The exhaust fan for cleanrooms according to claim 2, characterized in that: The bottom of the horizontal plate (501) is provided with a limiting groove (9) that works with the limiting block (505b). The frame (505a) is horizontally fixedly connected with a mesh (10). The top of the limiting block (505b) is provided with a spring piece (11). The top of the spring piece (11) is fixedly connected to the inner wall of the frame (505a).

6. The exhaust fan for cleanrooms according to claim 1, characterized in that: Springs (12) are fixedly connected to the front and rear sides of the left side of the card block (503). The left side of the spring (12) is fixedly connected to the inner wall of the horizontal plate (501). A protective net (13) is fixedly connected to the top of the exhaust fan (3).

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