Ventilator

Abstract

The utility model discloses a ventilator which comprises an installation shell, a fan is installed in the installation shell, an adjusting mechanism is arranged on the outer side of the installation shell, the adjusting mechanism comprises an installation sleeve, an adjusting sleeve, a connecting frame, a screw rod, a supporting frame, a transmission sleeve, a sliding sleeve, an adjusting hole, an adjusting rod and a positioning mechanism, and the installation sleeve is connected to one end of the installation shell. The adjusting sleeve is rotationally connected to the top end of the mounting sleeve, the connecting frame is fixed to the inner side of the adjusting sleeve, the screw is fixed to the ground of the connecting frame, the supporting piece is fixed in the mounting sleeve and rotationally connected with the screw, and the adjusting mechanism achieves accurate control over the air volume through cooperation of the adjusting sleeve and the screw. The screw can be driven to rotate by rotating the adjusting sleeve, so that the transmission sleeve is driven to move, the number of the adjusting holes blocked by the adjusting rod is adjusted, the airflow flowing area of the ventilator is further changed, and the ventilation flow can be conveniently and rapidly adjusted through the structure.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, and more specifically, it relates to a ventilation fan. Background Technology

[0002] Many ventilation systems require providing appropriate airflow to specific spaces to ensure air quality and environmental comfort. Common ventilation equipment is usually set with a fixed airflow during installation. However, with changes in the usage environment, such as fluctuations in temperature, humidity, and pollutant concentration, fans with a fixed airflow may not be able to meet actual needs. This is especially true in some special applications, such as clean rooms, laboratories, and environments where temperature-controlled precision equipment is located. Excessive or insufficient ventilation flow may lead to unstable system performance and affect the accuracy of environmental control.

[0003] Most existing ventilation fans, while providing stable airflow, are not designed with flexible flow regulation in mind. The flow rate often needs to be adjusted manually or by external control devices. This process is not only cumbersome but also has low precision. In actual operation, the inability to achieve automatic adjustment or fine control often leads to excessive or insufficient ventilation flow, increasing energy consumption and reducing system operating efficiency. At the same time, the limited adjustment function of the ventilation fan itself restricts the applicability of the equipment and makes it unable to adapt to the changing needs of the operating environment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a ventilator to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a ventilator, comprising a mounting shell, a fan installed inside the mounting shell, and an adjustment mechanism provided on the outer side of the mounting shell. The adjustment mechanism includes a mounting sleeve, an adjustment sleeve, a connecting frame, a screw, a support frame, a transmission sleeve, a sliding sleeve, adjustment holes, an adjustment rod, and a positioning mechanism. The mounting sleeve is connected to one end of the mounting shell, the adjustment sleeve is rotatably connected to the top of the mounting sleeve, the connecting frame is fixed to the inner side of the adjustment sleeve, the screw is fixed to the ground of the connecting frame, the support is fixed inside the mounting sleeve and rotatably connected to the screw, the transmission sleeve is threaded to the outer wall of the screw, multiple sets of adjustment holes are provided on the sliding sleeve, multiple sets of adjustment rods are provided and fixed to the outer side of the support frame, and the positioning mechanism includes a positioning block, a return spring, a positioning groove, and a locking sleeve. Multiple sets of positioning blocks are provided and slide on the outer side of the adjustment sleeve, the return spring is connected to the top of the multiple sets of positioning blocks and its bottom end is connected to the outer wall of the adjustment sleeve, multiple sets of positioning grooves are provided and distributed on the outer wall of the mounting sleeve, and the locking sleeve slides on the outer wall of the mounting sleeve and abuts against the top of the multiple sets of positioning blocks.

[0008] The present invention is further configured such that the lengths of the multiple sets of adjusting rods are distributed sequentially from long to short, which can realize layered control of the sealing position of the adjusting hole, thereby adjusting the ventilation volume more precisely and improving the flexibility of ventilation adjustment.

[0009] The present invention is further provided that the inner wall of the mounting sleeve is provided with directional strips, and multiple sets of directional strips are provided, all of which are slidably connected to the sliding sleeve, which can limit the movement direction of the sliding sleeve, prevent it from deviating, and improve the stability of the adjustment process.

[0010] The present invention is further provided that the outer wall of the mounting sleeve is provided with guide strips, and multiple sets of guide strips are provided, all of which are slidably connected to the locking sleeve, which helps the locking sleeve to slide smoothly along the set trajectory and enhances the guiding performance and fitting accuracy of the locking structure.

[0011] The present invention is further configured such that a locking mechanism is provided on the outer side of the lock sleeve. The locking mechanism includes a support rod, a baffle, a rotating sleeve, a limiting plate, and a clearance groove. Multiple sets of support rods are distributed on the outer wall of the lock sleeve, multiple sets of baffles are respectively fixed to the bottom ends of multiple sets of support rods, the rotating sleeve rotates on the outer wall of the mounting sleeve, the limiting plate is fixed on the outer wall of the rotating sleeve, and multiple sets of clearance grooves are distributed on the outer side of the limiting plate. This structure can achieve fast and reliable locking and unlocking, and improve the reliability and safety of positioning.

[0012] The present invention is further configured such that a tension spring is connected to the bottom surface of the lock sleeve, and a thrust bearing is connected between the bottom end of the tension spring and the limiting plate, which can provide restoring power and reduce rotational friction during unlocking, thereby improving the smoothness of structural operation and service life.

[0013] The present invention is further configured such that the area of ​​each of the multiple sets of clearance grooves is larger than that of the baffle, which can ensure that the baffle can smoothly enter the clearance groove when the limiting plate is rotated, thereby enhancing the smoothness and fault tolerance of the unlocking process.

[0014] The present invention is further provided that the top of the multiple sets of adjusting rods and the outer side of the adjusting holes are provided with rounded corners, which can reduce friction and wear between structures, avoid sharp corner jamming, and improve the smoothness and durability of the adjustment action.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a ventilator with the following beneficial effects:

[0017] 1. The regulating mechanism achieves precise airflow control through the cooperation of the regulating sleeve and the screw. Rotating the regulating sleeve drives the screw to rotate, which in turn moves the transmission sleeve, adjusting the number of holes blocked by the regulating rod, thereby changing the airflow area of ​​the fan. This structure allows for convenient and rapid adjustment of ventilation flow to meet the needs of different environments, avoiding the energy waste or insufficient ventilation problems that may be caused by fixed-flow fans.

[0018] 2. The positioning mechanism, through the design of multiple positioning blocks and a return spring, ensures that the adjusting sleeve can be stably positioned during the adjustment process, guaranteeing a stable flow rate after each adjustment. The combination of the positioning groove and the positioning block effectively prevents the adjusting sleeve from shifting due to vibration or external forces during use, improving the reliability of the equipment and ensuring precise control of the ventilation flow rate.

[0019] 3. The locking mechanism, consisting of a locking sleeve, baffle, and limit plate, ensures that the adjusted state of the equipment is securely locked after adjustment, preventing accidental adjustments during use and avoiding setting failure due to careless operation or vibration. Furthermore, the locking mechanism also features a convenient unlocking mechanism; by rotating the rotating sleeve in conjunction with the tension spring, the lock can be easily released, providing a convenient operating experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a ventilation fan according to the present invention;

[0021] Figure 2 This is a cross-sectional view of the locking sleeve in this utility model;

[0022] Figure 3 This is a cross-sectional view of the adjusting sleeve in this utility model;

[0023] Figure 4 This is a cross-sectional view of the mounting sleeve in this utility model;

[0024] Figure 5 This is a schematic diagram of the adjusting rod in this utility model.

[0025] In the diagram: 1. Mounting housing; 2. Fan; 3. Mounting sleeve; 4. Adjusting sleeve; 5. Connecting bracket; 6. Screw; 7. Support frame; 8. Transmission sleeve; 9. Sliding sleeve; 10. Adjusting hole; 11. Adjusting rod; 12. Positioning block; 13. Return spring; 14. Positioning groove; 15. Locking sleeve; 16. Orienting bar; 17. Guide bar; 18. Support rod; 19. Baffle; 20. Rotating sleeve; 21. Limiting plate; 22. Relief groove; 23. Tension spring; 24. Thrust bearing. Detailed Implementation

[0026] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A ventilator includes a mounting housing 1, a fan 2 installed inside the mounting housing 1, and an adjustment mechanism on the outside of the mounting housing 1. The adjustment mechanism includes a mounting sleeve 3, an adjustment sleeve 4, a connecting frame 5, a screw 6, a support frame 7, a transmission sleeve 8, a sliding sleeve 9, an adjustment hole 10, an adjustment rod 11, and a positioning mechanism. The mounting sleeve 3 is connected to one end of the mounting housing 1, the adjustment sleeve 4 is rotatably connected to the top of the mounting sleeve 3, the connecting frame 5 is fixed inside the adjustment sleeve 4, the screw 6 is fixed to the ground of the connecting frame 5, and the support is fixed inside the mounting sleeve 3 and rotatably connected to the screw 6. The sleeve 8 is threaded to the outer wall of the screw 6. Multiple sets of adjustment holes 10 are provided on the sliding sleeve 9. Multiple sets of adjustment rods 11 are fixed to the outside of the support frame 7. The positioning mechanism includes positioning blocks 12, return springs 13, positioning grooves 14 and locking sleeves 15. Multiple sets of positioning blocks 12 slide on the outside of the adjusting sleeve 4. The return springs 13 are connected to the top of the multiple sets of positioning blocks 12 and the bottom end is connected to the outer wall of the adjusting sleeve 4. Multiple sets of positioning grooves 14 are provided on the outer wall of the mounting sleeve 3. The locking sleeves 15 slide on the outer wall of the mounting sleeve 3 and abut against the top of the multiple sets of positioning blocks 12.

[0030] Multiple sets of adjusting rods 11 are distributed in descending order of length to achieve graded sealing at different heights, making air volume adjustment more precise and adapting to various ventilation needs.

[0031] The inner wall of the mounting sleeve 3 is provided with directional strips 16. Multiple sets of directional strips 16 are provided and are all slidably connected to the sliding sleeve 9. The sliding direction of the sliding sleeve 9 is restricted by the directional strips 16 to avoid deviation and ensure the stability of the structure operation.

[0032] The outer wall of the mounting sleeve 3 is provided with guide bars 17. Multiple sets of guide bars 17 are provided and all are slidably connected to the locking sleeve 15. The cooperation between the guide bars 17 and the locking sleeve 15 guides the locking sleeve 15 to move along a set trajectory, thereby improving the adjustment and locking accuracy.

[0033] A locking mechanism is provided on the outside of the lock sleeve 15. The locking mechanism includes a support rod 18, a baffle 19, a rotating sleeve 20, a limiting plate 21, and a clearance groove 22. Multiple sets of support rods 18 are distributed on the outer wall of the lock sleeve 15. Multiple sets of baffles 19 are respectively fixed to the bottom of multiple sets of support rods 18. The rotating sleeve 20 rotates on the outer wall of the mounting sleeve 3. The limiting plate 21 is fixed on the outer wall of the rotating sleeve 20. Multiple sets of clearance grooves 22 are distributed on the outside of the limiting plate 21. This mechanism realizes the limiting and unlocking functions through rotation, ensuring the stability and safety of the adjusted state.

[0034] A tension spring 23 is connected to the bottom surface of the locking sleeve 15. A thrust bearing 24 is connected between the bottom end of the tension spring 23 and the limiting plate 21. The thrust bearing 24 reduces the friction when the limiting plate 21 rotates, and the tension spring 23 provides the restoring force to achieve smooth locking and reset.

[0035] The area of ​​multiple clearance grooves 22 is larger than that of baffle 19. By ensuring that the baffle 19 can be smoothly inserted during rotation, the unlocking operation is smooth and without jamming.

[0036] The top of the multiple adjusting rods 11 and the outer side of the adjusting hole 10 are all provided with rounded corners. The rounded corner design can reduce friction and wear, prevent jamming, and improve the smoothness of the adjustment action and the service life of the structure.

[0037] In this embodiment, when in use, the fan 2 is activated to draw in and exhaust indoor air. When it is necessary to adjust the ventilation volume, the rotating adjustment sleeve 4 drives the screw 6 to rotate through the connecting bracket 5, so that the screw 6 and the transmission sleeve 8 are threaded together, so that the transmission sleeve 8 drives the moving sleeve to slide and change the number of multiple sets of adjustment rods 11 blocking the adjustment holes 10. The flow area of ​​the airflow is adjusted by the number of multiple sets of adjustment holes 10 blocked, thereby adjusting the ventilation volume.

[0038] More specifically, after adjustment, the locking sleeve 15 is pushed against the top of the multiple positioning blocks 12 so that its bottom end is engaged in the positioning groove 14. At the same time, the multiple reset springs 13 are compressed and the tension spring 23 is stretched. Then, the rotating sleeve 20 is rotated to drive the limiting plate 21 to rotate, so that the multiple baffles 19 abut against the outside of the limiting plate 21. When unlocking is required, the rotating sleeve 20 is rotated to move the clearance groove 22 to the inside of the multiple baffles 19, so that the multiple baffles 19 release their abutment against the limiting plate 21. Then, the tension spring 23 pulls the locking sleeve 15 to release its abutment against the multiple positioning blocks 12, and the multiple reset springs 13 pull the positioning blocks 12 away from the positioning groove 14, releasing the positioning of the adjusting sleeve 4.

[0039] In summary, when the entire equipment is in use or running: when in use, the fan 2 is turned on to draw in and exhaust the indoor air. When it is necessary to adjust the ventilation volume, the rotating adjustment sleeve 4 drives the screw 6 to rotate through the connecting frame 5, so that the screw 6 and the transmission sleeve 8 are threaded together, so that the transmission sleeve 8 drives the moving sleeve to slide and change the number of multiple sets of adjustment rods 11 blocking the adjustment holes 10. The number of multiple sets of adjustment holes 10 blocked is used to adjust the airflow area, thereby adjusting the ventilation volume.

[0040] After adjustment, push the locking sleeve 15 against the top of the multiple positioning blocks 12 so that its bottom end engages in the positioning groove 14. At the same time, compress the multiple reset springs 13 and stretch the tension spring 23. Then rotate the rotating sleeve 20 to drive the limiting plate 21 to rotate, so that the multiple baffles 19 abut against the outside of the limiting plate 21. When unlocking is required, rotate the rotating sleeve 20 to move the clearance groove 22 to the inside of the multiple baffles 19, so that the multiple baffles 19 release their abutment against the limiting plate 21. Then, the tension spring 23 pulls the locking sleeve 15 to release its abutment against the multiple positioning blocks 12, and the multiple reset springs 13 pull the positioning blocks 12 out of the positioning groove 14, releasing the positioning of the adjusting sleeve 4.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A ventilator comprising a mounting housing (1), characterised in that: A fan (2) is installed inside the mounting housing (1). An adjustment mechanism is provided on the outside of the mounting housing (1). The adjustment mechanism includes a mounting sleeve (3), an adjustment sleeve (4), a connecting frame (5), a screw (6), a support frame (7), a transmission sleeve (8), a sliding sleeve (9), an adjustment hole (10), an adjustment rod (11), and a positioning mechanism. The mounting sleeve (3) is connected to one end of the mounting housing (1). The adjustment sleeve (4) is rotatably connected to the top of the mounting sleeve (3). The connecting frame (5) is fixed inside the adjustment sleeve (4). The screw (6) is fixed to the ground of the connecting frame (5). The support is fixed inside the mounting sleeve (3) and rotatably connected to the screw (6). The transmission sleeve (8) The screw is threaded to the outer wall of the screw (6), and the adjustment hole (10) is provided in multiple sets distributed on the sliding sleeve (9). The adjustment rod (11) is provided in multiple sets fixed on the outside of the support frame (7). The positioning mechanism includes a positioning block (12), a reset spring (13), a positioning groove (14), and a locking sleeve (15). The positioning block (12) is provided in multiple sets sliding on the outside of the adjustment sleeve (4). The reset spring (13) is connected to the top of the multiple sets of positioning blocks (12) and its bottom end is connected to the outer wall of the adjustment sleeve (4). The positioning groove (14) is provided in multiple sets distributed on the outer wall of the mounting sleeve (3). The locking sleeve (15) slides on the outer wall of the mounting sleeve (3) and abuts against the top of the multiple sets of positioning blocks (12).

2. A ventilator according to claim 1, characterised in that: The lengths of the multiple sets of adjusting rods (11) are distributed in descending order.

3. A ventilator according to claim 2, characterised in that: The inner wall of the mounting sleeve (3) is provided with a guide strip (16), and multiple sets of the guide strip (16) are provided, all of which are slidably connected to the sliding sleeve (9).

4. A ventilator according to claim 3, wherein: The outer wall of the mounting sleeve (3) is provided with guide strips (17), and multiple sets of guide strips (17) are provided, all of which are slidably connected to the locking sleeve (15).

5. A ventilator according to claim 4, characterised in that: The locking mechanism is provided on the outside of the lock sleeve (15). The locking mechanism includes a support rod (18), a baffle (19), a rotating sleeve (20), a limiting plate (21), and a clearance groove (22). The support rod (18) is provided in multiple sets distributed on the outer wall of the lock sleeve (15). The baffle (19) is provided in multiple sets and fixed to the bottom of the multiple sets of support rods (18). The rotating sleeve (20) rotates on the outer wall of the mounting sleeve (3). The limiting plate (21) is fixed on the outer wall of the rotating sleeve (20). The clearance groove (22) is provided in multiple sets distributed on the outside of the limiting plate (21).

6. A ventilator according to claim 5 wherein: The bottom surface of the lock sleeve (15) is connected to a tension spring (23), and a thrust bearing (24) is connected between the bottom end of the tension spring (23) and the limiting plate (21).

7. A ventilator according to claim 6, characterised in that: The area of ​​all the relief grooves (22) is larger than that of the baffle (19).

8. A ventilator according to claim 7, characterised in that: The top of each of the multiple sets of adjusting rods (11) and the outer side of the adjusting hole (10) are provided with rounded corners.

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