Air driving device

Abstract

The utility model provides an air driving device which comprises a blast door fan and a flow adjusting assembly installed on the air outlet side of the blast door fan, the flow adjusting assembly comprises an installation cylinder installed on the air outlet side of the blast door fan, a circular truncated cone is arranged on the inner side wall of the installation cylinder in a sliding mode, and a plurality of arc-shaped bent plates are connected to the circular truncated cone in a rotating mode. The top end of the circular truncated cone is in contact with a concentric fixing table. The utility model has the following beneficial effects: the plurality of arc-shaped triangular flow adjusting plates can generate mutual expansion motion or mutual closing motion, and finally, the plurality of arc-shaped triangular flow adjusting plates can be combined with one another to completely shield the fixed table, so that the air outlet part of the blower of the blast door is closed; and the air circulation area between the arc-shaped triangular flow adjusting plates can be effectively adjusted, operation is more convenient, for a green hand, the air outlet area of the air blowing door fan can be continuously changed, the matching degree of the air blowing door fan and the flow can be observed, and debugging is easier.

Description

An air-driven device Technical Field

[0001] This utility model is an air-driven device, and more particularly an air-driven device for a building overall airtightness testing system, belonging to the field of construction. Background Technology

[0002] Building airtightness refers to a building's ability to prevent air infiltration when closed, characterizing the amount of unorganized air infiltration into a building or room under normal sealing conditions. Currently, the main airtightness testing method in China is the fan pressure method, and the testing equipment is the "Building Overall Airtightness Testing System," which mainly includes a blower, pressure measuring device, and airflow measuring system. The blower consists of an adjustable door and an attached fan installed in the door frame of the building envelope. The fan acts as an air-driven device, applying positive and negative pressure to the interior of the building within a specified pressure range and providing a stable airflow.

[0003] Currently, the most commonly used air-driven devices in domestic building air tightness testing systems are blower fans based on the orifice plate method. These fans have a fan cover on the air outlet side, and flow regulating rings with different orifice diameters can be installed on the fan cover to control and test the air flow.

[0004] However, this design of a fan cover plate with flow regulating rings of different orifice sizes has the following disadvantages: First, frequent disassembly and reassembly of the flow regulating rings may lead to a deterioration in the sealing performance of the equipment itself, which will shorten the service life of the equipment to a certain extent. Second, the test range of flow regulating rings of different orifice sizes is different. For beginners, frequent disassembly and reassembly and debugging will increase the workload and is not convenient. Third, using flow regulating rings of different orifice sizes or using several types of flow regulating rings in combination to test the flow rate will result in insufficient flow control. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an air-driven device.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] An air-driven device includes a blower fan and a flow regulating assembly installed on the outlet side of the blower fan. The flow regulating assembly includes a mounting cylinder installed on the outlet side of the blower fan. A frustum is slidably disposed on the inner wall of the mounting cylinder. Multiple arc-shaped plates are rotatably connected to the frustum. A concentric fixed platform is disposed at the top of the frustum. An arc-shaped triangular flow regulating plate is rotatably connected to the other end of the arc-shaped plates. One end of the arc-shaped triangular flow regulating plate is rotatably connected to the fixed platform. The fixed platform is fixed inside the mounting cylinder by multiple fasteners.

[0008] Furthermore, a first air duct opening is provided on the circular platform, and a second air duct opening is provided on the fixed platform. Both the first and second air duct openings are circular and have the same diameter. An arc-shaped curved plate blocks the second air duct opening.

[0009] Furthermore, the fastener includes a vertical rod fixed to the inner wall of the second air duct opening on the fixed platform. The vertical rod slides through the first air duct opening and a connecting plate is fixed at the bottom of the vertical rod. The end of the connecting plate away from the vertical rod is fixed to the inner wall of the mounting cylinder, and the top of the connecting plate contacts the bottom of the frustum.

[0010] Furthermore, the top and bottom of the mounting cylinder have openings, and the top of the truncated cone is fixed with the same number of rotating rods as the number of arc-shaped bent plates. The rotating rods have an integrated I-shaped turntable, and the arc-shaped bent plates are movably fitted onto the I-shaped turntable on the rotating rods.

[0011] Furthermore, a T-shaped rod is fixedly installed at one corner of the top of the arc-shaped triangular flow regulating plate, and the other end of the arc-shaped bent plate is rotatably sleeved on the T-shaped rod. The same number of T-shaped rods as the arc-shaped triangular flow regulating plate are fixedly installed on the fixed platform, and one end of the arc-shaped triangular flow regulating plate is rotatably sleeved on the T-shaped rod.

[0012] Furthermore, multiple mounting plates are fixedly provided on the bottom outer side of the mounting cylinder. The mounting plates have threaded mounting holes, and the mounting plates are fixed to the air outlet side wall of the blower through the threaded mounting holes and screws.

[0013] Furthermore, two circular columns are fixedly mounted on the circular platform. The circular columns fit against the inner wall of the cylinder. An extension plate is fixedly mounted on the top of the circular column. A threaded rod is fixedly mounted on the bottom of the extension plate. The cylinder is equipped with a locking device that matches the threaded rod.

[0014] Furthermore, the locking component includes a circular sleeve plate fixed to the top of the mounting cylinder. The circular sleeve plate has two arc-shaped grooves, a threaded rod passes through the arc-shaped grooves, and a locking nut is fitted at the bottom of the threaded rod. The bottom surface of the extension plate is in contact with the top surface of the circular sleeve plate.

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

[0016] The truncated cone is rotated and positioned inside the mounting cylinder. A fixed platform is mounted on the truncated cone. When the operator rotates the truncated cone, the rotating platform causes the connected arc-shaped bending plate to move. The other end of the arc-shaped bending plate is connected to one corner of an arc-shaped triangular flow regulating plate, and the second corner of the arc-shaped triangular flow regulating plate is rotatably connected to the fixed platform. Therefore, multiple arc-shaped triangular flow regulating plates can expand or move closer to each other. Ultimately, the multiple arc-shaped triangular flow regulating plates can merge together to completely block the fixed platform, thus closing the air outlet of the blower damper. It can also effectively adjust the airflow area between the arc-shaped triangular flow regulating plates, making operation more convenient. For beginners, it is easier to continuously change the air outlet area of ​​the blower damper and observe its matching degree with the flow rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.

[0018] Figure 1 shows a front view of an air-driven device according to the present invention;

[0019] Figure 2 shows a schematic diagram of the flow regulation component of an air drive device according to the present invention;

[0020] Figure 3 shows a schematic diagram of the frustum and fixed platform of an air drive device according to the present invention;

[0021] Figure 4 shows a schematic diagram of the arc-shaped triangular flow regulating plate of an air-driven device according to the present invention.

[0022] In the diagram: 1. Blower fan; 2. Mounting cylinder; 3. Frustum; 4. Arc-shaped bent plate; 5. Arc-shaped triangular flow regulating plate; 6. Fixed platform; 7. Air duct opening one; 8. Air duct opening two; 9. Vertical rod; 10. Connecting long plate; 11. Rotating rod; 12. T-shaped rod one; 13. T-shaped rod two; 14. Mounting plate; 15. Threaded mounting hole; 16. Circular column; 17. Extension plate; 18. Threaded rod; 19. Locking element; 20. Circular sleeve plate; 21. Arc-shaped sliding groove. Detailed Implementation

[0023] 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.

[0024] Please refer to Figures 1-4. This utility model provides a technical solution: an air-driven device, including a blower fan 1 and a flow regulating component installed on the air outlet side of the blower fan 1. The flow regulating component includes an installation cylinder 2 installed on the air outlet side of the blower fan 1. A frustum 3 is slidably arranged on the inner wall of the installation cylinder 2. Multiple arc-shaped bent plates 4 are rotatably connected to the frustum 3. A concentric fixed platform 6 is arranged at the top of the frustum 3. An arc-shaped triangular flow regulating plate 5 is rotatably connected to the other end of the arc-shaped bent plate 4. One end of the arc-shaped triangular flow regulating plate 5 is rotatably connected to the fixed platform 6. The fixed platform 6 is fixed inside the installation cylinder 2 by multiple fasteners.

[0025] Referring to Figure 3, a first air duct opening 7 is provided on the truncated cone 3, and a second air duct opening 8 is provided on the fixed platform 6. Both the second air duct opening 8 and the first air duct opening 7 are circular and have the same diameter. An arc-shaped curved plate 4 blocks the second air duct opening 8. The second air duct opening 8 and the first air duct opening 7 have the same size and correspond to each other. The arrangement of the first air duct opening 7 and the second air duct opening 8 ensures that the air duct openings are connected to the inside of the blower fan 1.

[0026] Referring to Figure 2-3, the fixing components include vertical rods 9 fixed to the inner wall of the second air duct opening 8 on the fixed platform 6. The vertical rods 9 slide through the first air duct opening 7, and a connecting plate 10 is fixed to the bottom of the vertical rods 9. The end of the connecting plate 10 away from the vertical rods 9 is fixed to the inner wall of the mounting cylinder 2, and the top of the connecting plate 10 contacts the bottom of the frustum 3. Multiple vertical rods 9 are fixed to the inner wall of the second air duct opening 8 on the fixed platform 6. The vertical rods 9 contact the first air duct opening 7, and then the bottom of the connected vertical rods 9 is fixed to a connecting plate 10 with screws. The other end of the connecting plate 10 is then fixed to the inner wall of the mounting cylinder 2 with screws. The frustum 3 designed in this way is limited between the connecting plate 10 and the fixed platform 6, and does not affect the sliding setting of the frustum 3, ensuring that the subsequent flow rate adjustment can be normal.

[0027] Referring to Figure 4, the top and bottom of the mounting cylinder 2 are open. The top of the frustum 3 is fixed with the same number of rotating rods 11 as the arc-shaped bent plate 4. The rotating rod 11 has an integrated I-shaped turntable. The arc-shaped bent plate 4 is movably fitted on the I-shaped turntable on the rotating rod 11, ensuring that the arc-shaped bent plate 4 can rotate normally.

[0028] Referring to Figure 4, a T-shaped rod 12 is fixedly installed at one corner of the top of the arc-shaped triangular flow regulating plate 5. The other end of the arc-shaped bent plate 4 is rotatably sleeved on the T-shaped rod 12. The same number of T-shaped rods 13 as the arc-shaped triangular flow regulating plate 5 are fixedly installed on the fixed platform 6. One end of the arc-shaped triangular flow regulating plate 5 is rotatably sleeved on the T-shaped rod 13. The design of the T-shaped rod 12 ensures that the other end of the arc-shaped bent plate 4 is rotatably connected. The design of the T-shaped rod 13 ensures that one end of the arc-shaped triangular flow regulating plate 5 is rotatably connected. Only by rotatably connecting can the subsequent multiple arc-shaped triangular flow regulating plates 5 perform arc-shaped expansion or arc-shaped closing movements to regulate the flow.

[0029] Referring to Figures 1-2, multiple mounting plates 14 are fixedly mounted on the bottom outer side of the mounting cylinder 2. Each mounting plate 14 has threaded mounting holes 15. The mounting plates 14 are fixed to the air outlet side wall of the blower 1 via the threaded mounting holes 15 and screws. The blower 1 has an air outlet channel on one side wall, which is the existing air outlet channel and will not be described in detail here. The mounting cylinder 2 is installed on this air outlet wall, and the air outlet is connected to the air duct opening 8 and air duct opening 7. This allows for adjustment of the ventilation area, thereby regulating the airflow.

[0030] Referring to Figure 2, two circular columns 16 are fixedly mounted on the frustum 3. The circular columns 16 are fitted against the inner wall of the cylinder 2. An extension plate 17 is fixedly mounted on the top of the circular columns, and a threaded rod 18 is fixedly mounted on the bottom of the extension plate 17. The cylinder 2 is equipped with a locking component 19 that matches the threaded rod 18. The locking component 19 includes a circular sleeve plate 20 fixed to the top of the outer side of the cylinder 2. Two arc-shaped grooves 21 are opened on the circular sleeve plate 20. The threaded rod 18 passes through the arc-shaped grooves 21, and a locking nut is fitted at the bottom of the threaded rod 18. The bottom surface of the extension plate 17 is in contact with the top surface of the circular sleeve plate 20. The rotation of the frustum 3 causes the threaded rod 18 to slide in the arc-shaped grooves 21. After adjusting the flow rate, the locking nut is fitted onto the threaded rod 18, and then the locking nut is rotated with a tool until it is tightly pressed against the bottom of the circular sleeve plate 20, thus locking and fixing the threaded rod 18.

[0031] In practical operation, the frustum 3 is rotatably set inside the mounting cylinder 2. A fixed platform 6 is contact-type installed on the frustum 3. When the operator rotates the frustum 3, the fixed platform 6 rotates, causing the rotatably connected arc-shaped bending plate 4 to move. The other end of the arc-shaped bending plate 4 is rotatably connected to one corner of the arc-shaped triangular flow regulating plate 5, and the second corner of the arc-shaped triangular flow regulating plate 5 is rotatably connected to the fixed platform 6. Therefore, multiple arc-shaped triangular flow regulating plates 5 can generate mutual expansion or mutual approach movements. Ultimately, multiple arc-shaped triangular flow regulating plates 5 can merge together, which is beneficial to the fixed platform 6. The fixed platform 6 is completely blocked, thus closing the air outlet of the blower fan 1 and effectively adjusting the airflow area between the arc-shaped triangular flow regulating plates 5. This makes operation more convenient, and for beginners, the air outlet area of ​​the blower fan 1 can be changed to observe its matching degree with the flow rate, making debugging easier. Therefore, it eliminates the need for repeatedly spending a long time disassembling and assembling the flow regulating ring. Furthermore, the existing fan cover plate is equipped with air outlet regulating rings of different orifice gauges. Therefore, disassembling a large number of air outlet regulating rings on the fan cover plate and replacing them later would affect the testing efficiency.

[0032] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An air-driven device, characterized in that: It includes a blower fan (1) and a flow regulating component installed on the air outlet side of the blower fan (1); the flow regulating component includes an installation cylinder (2) installed on the air outlet side of the blower fan (1), a frustum (3) is slidably provided on the inner wall of the installation cylinder (2), a plurality of arc-shaped bent plates (4) are rotatably connected on the frustum (3), a concentric fixed platform (6) is contacted at the top of the frustum (3), an arc-shaped triangular flow regulating plate (5) is rotatably connected to the other end of the arc-shaped bent plate (4), one end of the arc-shaped triangular flow regulating plate (5) is rotatably connected to the fixed platform (6), and the fixed platform (6) is fixed inside the installation cylinder (2) by a plurality of fasteners.

2. The air-driven device according to claim 1, characterized in that: A duct opening 1 (7) is provided on the truncated cone (3), and a duct opening 2 (8) is provided on the fixed platform (6). Both the duct opening 2 (8) and the duct opening 1 (7) are circular and have the same diameter. An arc-shaped curved plate (4) blocks the duct opening 2 (8).

3. The air-driven device according to claim 2, characterized in that: The fasteners include a vertical rod (9) fixed to the inner wall of the second air duct opening (8) on the fixed platform (6), the vertical rod (9) slidingly contacts the first air duct opening (7), and a connecting plate (10) is fixedly provided at the bottom of the vertical rod (9). The end of the connecting plate (10) away from the vertical rod (9) is fixed to the inner wall of the mounting cylinder (2), and the top of the connecting plate (10) contacts the bottom of the frustum (3).

4. The air-driven device according to claim 3, characterized in that: The cylinder (2) has openings at both the top and bottom. The top of the truncated cone (3) is fixed with the same number of rotating rods (11) as the curved plate (4). The rotating rod (11) has an integrated I-shaped turntable. The curved plate (4) is movably mounted on the I-shaped turntable on the rotating rod (11).

5. The air-driven device according to claim 4, characterized in that: A T-shaped rod (12) is fixedly installed at one corner of the top of the arc-shaped triangular flow regulating plate (5). The other end of the arc-shaped bent plate (4) is rotated and sleeved on the T-shaped rod (12). The same number of T-shaped rods (13) as the arc-shaped triangular flow regulating plate (5) are fixedly installed on the fixed platform (6). One end of the arc-shaped triangular flow regulating plate (5) is rotated and sleeved on the T-shaped rod (13).

6. The air-driven device according to claim 5, characterized in that: Multiple mounting plates (14) are fixedly provided on the bottom outer side of the mounting cylinder (2). The mounting plates (14) are provided with threaded mounting holes (15). The mounting plates (14) are fixed to the air outlet side wall of the blower fan (1) through the threaded mounting holes (15) and screws.

7. An air-driven device according to claim 6, characterized in that: Two circular columns (16) are fixed on the truncated cone (3). The circular columns (16) fit against the inner wall of the cylindrical cylinder (2). An extension plate (17) is fixed at the top of the circular column. A threaded rod (18) is fixed at the bottom of the extension plate (17). The cylindrical cylinder (2) is equipped with a locking device (19) that matches the threaded rod (18).

8. An air-driven device according to claim 7, characterized in that: The locking component (19) includes a circular sleeve plate (20) fixed to the top of the mounting cylinder (2). The circular sleeve plate (20) has two arc grooves (21). A threaded rod (18) passes through the arc grooves (21) and a locking nut is fitted at the bottom of the threaded rod (18). The bottom surface of the extension plate (17) is in contact with the top surface of the circular sleeve plate (20).

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