Effect-increasing and noise-reducing type fan shroud for brushless fan

Abstract

The utility model provides a synergistic noise reduction type brushless fan shroud which comprises a shroud body, a brushless fan is arranged on the inner side of the shroud body, a fan shell is arranged at the outer end of the shroud body, a connecting assembly used for damping is arranged between the shroud body and the fan shell, and the connecting assembly comprises an upper damping spring connected with the upper end of the fan shell, an annular groove and an upper positioning groove. The connecting assembly further comprises a lower positioning groove, a buckle, a clamping groove and a lower damping spring which are connected with the lower end of the fan shell, a silica gel gasket and a cushioning pad which are used for damping are arranged at the outer end of the fan protection ring, and a cleaning brush used for cleaning the brushless fan and a moving assembly used for moving the cleaning brush up and down are arranged at the lower end of the fan protection ring. The moving assembly comprises multiple sets of rope grooves and multiple sets of linkage ropes which penetrate through the interior of the air protection ring, a sliding groove is formed in the outer end of each set of rope groove, multiple sets of sliding blocks are connected between the sliding grooves and the cleaning brush, and linkage rings and rope blocks are arranged at the upper ends and the lower ends of the multiple sets of linkage ropes respectively. The problem that noise reduction and efficiency improvement cannot be achieved after the design of the wind protection ring is installed in the brushless fan is solved.

Description

Technical Field

[0001] This utility model relates to the field of air guard technology, and more specifically, to an efficiency-enhancing and noise-reducing air guard for a brushless fan. Background Technology

[0002] The air shield (also known as the air guide ring, air cover, or protective ring) used in brushless fans is a ring-shaped component installed around the fan impeller, usually made of plastic, metal, or composite materials. It has the advantage of optimizing airflow direction. The air shield can guide the airflow to pass through the impeller more concentratedly, reduce air turbulence and eddies, reduce wind resistance, and thus improve the fan's air output efficiency and air pressure. It can also prevent the airflow from spreading disorderly at the edge of the impeller, ensuring that more airflow flows along the axis and improving overall performance.

[0003] In existing technologies, the use of air guards cannot simultaneously guarantee noise reduction and efficiency enhancement after installation inside a brushless fan; therefore, we have made improvements and proposed an efficiency-enhancing and noise-reducing air guard for brushless fans. Summary of the Invention

[0004] The purpose of this invention is to address the problem that current designs of air guards cannot reduce noise and improve efficiency after installation inside brushless fans.

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

[0006] An enhanced noise reduction brushless fan wind shield is proposed to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] An efficiency-enhancing and noise-reducing air guard for a brushless fan includes an air guard, with a brushless fan located inside the air guard and a fan housing located at the outer end of the air guard. A shock-absorbing connecting component is provided between the air guard and the fan housing. The connecting component includes an upper shock-absorbing spring, an annular groove, and an upper positioning groove connected to the upper end of the fan housing. The connecting component also includes a lower positioning groove, a buckle, a slot, and a lower shock-absorbing spring connected to the lower end of the fan housing. A silicone gasket and a damping pad are provided at the outer end of the air guard for shock absorption.

[0009] As a preferred technical solution of this application, the upper inner surface of the fan casing is fixed to the annular groove, and the annular groove is fixedly connected to the upper outer surface of the upper damping spring. The lower end of the upper damping spring is wrapped in the upper positioning groove, and the upper positioning groove is embedded in the upper inner surface of the windproof ring.

[0010] As a preferred technical solution of this application, the lower positioning groove is embedded in the lower center of the wind shield ring, the lower positioning groove passes through the lower outer side of the wind shield ring, the upper end of the lower damping spring is fixedly connected to the inner end of the lower positioning groove, the lower end of the lower damping spring is fixedly connected to the lower inner surface of the fan housing, the buckles are fixed at equal intervals in the lower positioning groove of the wind shield ring, the buckles and the slots are locked in a one-to-one correspondence, and the slots are arranged in a ring array in the center of the lower end of the fan housing.

[0011] As a preferred technical solution of this application, the silicone gasket is wrapped around the outer end of the air guard ring, and the silicone gasket is installed between the fan housing and the side of the air guard ring. The shock-absorbing pad is fixed to the lower end of the air guard ring, and the shock-absorbing pad is installed between the bottom end of the fan housing and the air guard ring.

[0012] As a preferred technical solution of this application, the lower end of the air guard ring is provided with a cleaning brush for cleaning the brushless fan and a moving component for the cleaning brush to move up and down. The moving component includes multiple sets of rope grooves and multiple sets of linkage ropes passing through the air guard ring. Each set of rope grooves has a sliding groove at its outer end. Multiple sets of sliders are connected between the sliding groove and the cleaning brush. The upper and lower ends of the multiple sets of linkage ropes are respectively provided with linkage rings and rope blocks. The outer end of the linkage ring is provided with a ring groove.

[0013] As a preferred technical solution of this application, the cleaning brush includes multiple sets of cleaning sub-brushes and a set of cleaning rings connected to the cleaning sub-brushes. Each set of cleaning sub-brushes is located between two adjacent fan blades of the brushless fan. Multiple sets of sliders are arranged in a ring array at the outer end of the cleaning ring. The sliders are pierced by rope grooves, and the rope blocks abut against the lower end of the sliders.

[0014] As a preferred technical solution of this application, the rope block and the linkage ring are connected by a linkage rope. The two ends of the linkage rope are fixedly connected to the rope block and the linkage ring respectively. The linkage ring rotates along the ring groove, and the ring groove is embedded in the upper part of the windproof ring.

[0015] As a preferred technical solution of this application, the linkage rope passes through the rope groove in the slider and the rope groove at the upper end of the windproof ring. When the rope groove passes through the lower side of the upper end of the windproof ring, it is perpendicular to the sliding groove, and when the rope groove passes through the upper side of the upper end of the windproof ring, it passes obliquely through the ring groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] With the upper and lower sets of shock-absorbing springs and corresponding positioning slots for installation, it is easy to protect the air and reduce vibration during the operation of the brushless fan. Furthermore, the silicone gasket and shock-absorbing pad at the outer end of the air protection ring make the installation between it and the fan casing more stable, thus ensuring noise reduction.

[0019] In addition, the adjustable cleaning brush allows for quick and easy cleaning of the fan blades without disassembling the entire brushless fan after prolonged use, preventing dirt buildup from affecting the fan's operation and efficiency. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a wind shield for an efficiency-enhancing and noise-reducing brushless fan provided in this application;

[0021] Figure 2 This application provides an overall side section diagram of the air guard ring for an efficiency-enhancing and noise-reducing brushless fan.

[0022] Figure 3 A schematic diagram of the upper and lower structures of a wind shield for an efficiency-enhancing and noise-reducing brushless fan provided in this application;

[0023] Figure 4 This application provides an enhanced noise reduction type air guard for a brushless fan. Figure 2 A magnified structural diagram of A in the middle;

[0024] Figure 5 This application provides an enhanced noise reduction type air guard for a brushless fan. Figure 2 A magnified structural diagram of B in the diagram;

[0025] Figure 6 This application provides an enhanced noise reduction type air guard for a brushless fan. Figure 2 A magnified structural diagram of C;

[0026] Figure 7 A schematic diagram of the cross-sectional structure of the cleaning brush of the air guard ring for an efficiency-enhancing and noise-reducing brushless fan provided in this application;

[0027] Figure 8 A schematic diagram of the fan housing and the air guard ring for an efficiency-enhancing and noise-reducing brushless fan provided in this application;

[0028] Figure 9 A top view schematic diagram of the overall structure of an efficiency-enhancing and noise-reducing air guard ring for a brushless fan provided in this application;

[0029] Figure 10 An enlarged structural schematic diagram of the linkage ring and linkage rope of a wind guard ring for an efficiency-enhancing and noise-reducing brushless fan provided in this application;

[0030] Figure 11 This application provides an enhanced noise reduction type air guard for a brushless fan. Figure 7 Top view.

[0031] The image shows:

[0032] 1. Fan housing; 2. Brushless fan; 3. Air guard ring; 4. Silicone gasket; 5. Shock-absorbing pad; 6. Upper shock-absorbing spring; 7. Ring groove; 8. Upper positioning groove; 9. Lower positioning groove; 10. Buckle; 11. Clip groove; 12. Lower shock-absorbing spring; 13. Slide groove; 14. Slider; 15. Cleaning brush; 16. Linkage rope; 17. Rope groove; 18. Linkage ring; 19. Rope block; 20. Ring groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0034] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] like Figures 1-11 As shown, this embodiment proposes an efficiency-enhancing and noise-reducing wind guard for a brushless fan, including a wind guard 3. A brushless fan 2 is provided on the inner side of the wind guard 3, and a fan housing 1 is provided on the outer end of the wind guard 3. A shock-absorbing connecting component is provided between the wind guard 3 and the fan housing 1. The connecting component includes an upper shock-absorbing spring 6, an annular groove 7, and an upper positioning groove 8 connected to the upper end of the fan housing 1. The connecting component also includes a lower positioning groove 9, a buckle 10, a slot 11, and a lower shock-absorbing spring 12 connected to the lower end of the fan housing 1. A silicone gasket 4 and a shock-absorbing pad 5 are provided on the outer end of the wind guard 3 for shock absorption.

[0037] When installing the wind shield ring 3 inside the fan housing 1, the buckle 10 at the bottom of the wind shield ring 3 and the slot 11 at the bottom of the fan housing 1 are interlocked. The lower shock absorber spring 12 is embedded in the lower positioning slot 9 and is compressed. The lower positioning slot 9 is embedded in the lower center of the wind shield ring 3 and extends through the lower outer side of the wind shield ring 3. The upper end of the lower shock absorber spring 12 is fixedly connected to the inner end of the lower positioning slot 9. The lower end of the lower shock absorber spring 12 is fixedly connected to the lower inner surface of the fan housing 1. The buckle 10 is fixedly fixed at equal intervals in the lower positioning slot 9 of the wind shield ring 3. The buckle 10 and the slot 11 are interlocked one-to-one. The slots 11 are arranged in a ring array in the center of the lower end of the fan housing 1.

[0038] The upper end of the wind shield 3 is placed in the upper positioning groove 8 and the upper shock-absorbing spring 6 is placed in it. During this process, the damping pad 5 and the lower inner surface of the fan housing 1 are in contact with each other. The silicone gasket 4 is wrapped around the inner side of the fan housing 1. The upper shell of the fan housing 1 is covered and the annular groove 7 on the inner side of the upper shell of the fan housing 1 is pressed against the upper end of the upper shock-absorbing spring 6.

[0039] The upper inner surface of the fan housing 1 is fixed to the annular groove 7. The annular groove 7 is fixedly connected to the upper outer surface of the upper damping spring 6. The lower end of the upper damping spring 6 is wrapped in the upper positioning groove 8. The upper positioning groove 8 is embedded in the upper inner surface of the wind shield ring 3. The upper shell and the lower shell of the fan housing 1 are connected to each other by screws and nuts. At this time, the wind shield ring 3 is installed. When the brushless fan 2 rotates, the air volume can be concentrated at the inner end of the wind shield ring 3. The damping pad 5 is fixed at the lower end of the wind shield ring 3. The installation position of the damping pad 5 is between the bottom end of the fan housing 1 and the wind shield ring 3. The silicone gasket 4 is wrapped around the outer end of the wind shield ring 3. The installation position of the silicone gasket 4 is between the side wall of the fan housing 1 and the wind shield ring 3. Through the setting of the upper damping spring 6, the lower damping spring 12, the damping pad 5 and the silicone gasket 4, it is possible to ensure good vibration reduction and noise reduction during operation.

[0040] like Figures 2-5 , Figures 7-8 and Figure 10 As shown, in a preferred embodiment, based on the above method, the lower end of the air guard ring 3 is provided with a cleaning brush 15 for cleaning the brushless fan 2 and a moving component for the cleaning brush 15 to move up and down. The moving component includes multiple sets of rope grooves 17 and multiple sets of linkage ropes 16 passing through the air guard ring 3. The outer end of each set of rope grooves 17 is provided with a sliding groove 13. Multiple sets of sliders 14 are connected between the sliding groove 13 and the cleaning brush 15. The upper and lower ends of the multiple sets of linkage ropes 16 are respectively provided with linkage rings 18 and rope blocks 19. The outer end of the linkage ring 18 is provided with a ring groove 20.

[0041] When not in use, the cleaning brush 15 in the brushless fan 2 is stored at the bottom of the fan blades and is a certain distance away from the fan blades so as not to obstruct the operation of the fan blades.

[0042] After prolonged use of the brushless fan 2, a lot of dust and other contaminants will adhere to the outer surface of the fan blades, affecting the operation of the brushless fan 2. At this time, by rotating the linkage ring 18 located at the upper end of the air guard ring 3, the linkage ring 18 rotates along the ring groove 20. The linkage ring 18 drives the linkage rope 16 upward along the upper end of the rope groove 17 and obliquely through the ring groove 20. The rope block 19 is connected to the linkage ring 18 through the linkage rope 16, and the two ends of the linkage rope 16 are fixedly connected to the rope block 19 and the linkage ring 18 respectively. The linkage ring 18 rotates along the groove 20, which is embedded in the upper inner side of the windproof ring 3. The lower end of the linkage rope 16 abuts against the slider 14 through the rope block 19. The cleaning brush 15 includes multiple sets of cleaning sub-brushes and a cleaning ring connecting the cleaning sub-brushes. Each set of cleaning sub-brushes is located between two adjacent fan blades of the brushless fan 2. Multiple sets of sliders 14 are arranged in a circular array on the outer end of the cleaning ring. The sliders 14 are pierced by the rope groove 17, and the rope block 19 abuts against the lower end of the slider 14 and passes through the sliding groove 13. The system is set up so that slider 14 moves upward, causing cleaning brush 15 to move upward as a whole. As cleaning brush 15 moves upward, it wipes away dust and dirt from the surface of the fan blades until cleaning brush 15 reaches the top. At this point, the user can use a brush to remove the dirt adhering to the surface of cleaning brush 15. During this process, the dirt that has been removed will not re-enter the brushless fan 2 due to the user's brushing (this is because when cleaning brush 15 reaches the top of the fan blades of brushless fan 2, the upper surface of the fan blades and the upper surface of cleaning brush 15 remain horizontal and sealed). This avoids the inconvenience of disassembling the entire brushless fan 2. Furthermore, when the linkage ring 18 is not operated, cleaning brush 15 will not move within the slide groove 13. This limitation can be achieved by adding corresponding connecting springs to slider 14 on the outside of cleaning brush 15 and slide groove 13, so that cleaning brush 15 can be positioned by the tension of the connecting springs when not in use. The linkage rope 16 passes through the rope groove 17 inside the slider 14 and the rope groove 17 at the upper end of the windproof ring 3. When the rope groove 17 passes through the lower side of the upper end of the windproof ring 3, it is perpendicular to the sliding groove 13. When the rope groove 17 passes through the upper side of the upper end of the windproof ring 3, it passes obliquely through the ring groove 20.

[0043] When using this application: During the installation of the windproof ring 3 inside the fan housing 1, the buckle 10 at the bottom of the windproof ring 3 and the slot 11 at the bottom of the fan housing 1 are interlocked. The lower shock-absorbing spring 12 is embedded in the lower positioning slot 9 and is compressed. The upper end of the windproof ring 3 is placed in the upper positioning slot 8 with the upper shock-absorbing spring 6. During this process, the damping pad 5 contacts the lower inner surface of the fan housing 1, and the silicone gasket 4 is laterally wrapped around the inner side of the fan housing 1. Cover the upper shell of the fan housing 1, and fasten the annular groove 7 on the inner side of the upper shell of the fan housing 1 against the upper end of the upper shock-absorbing spring 6. The upper shell and the lower shell of the fan housing 1 are connected to each other by screws and nuts. At this time, the wind guard ring 3 is installed. When the brushless fan 2 rotates, the air volume can be concentrated at the inner end of the wind guard ring 3. Through the setting of the upper shock-absorbing spring 6, the lower shock-absorbing spring 12, the damping pad 5 and the silicone gasket 4, it can be ensured that vibration and noise are well reduced during operation.

[0044] When not in use, the cleaning brush 15 in the brushless fan 2 is stored at the bottom of the fan blades, with a certain distance between it and the fan blades so as not to obstruct their operation. After prolonged use of the brushless fan 2, a lot of dust and other dirt will adhere to the outer surface of the fan blades, affecting the operation of the brushless fan 2. At this time, by rotating the linkage ring 18 located at the upper end of the air guard ring 3, the linkage ring 18 rotates along the ring groove 20. The linkage ring 18 drives the linkage rope 16 upward along the upper end of the rope groove 17 and diagonally through the ring groove 20. The lower end of the linkage rope 16 abuts against the slider 14 through the rope block 19, and through the setting of the sliding groove 13, it drives the slider 14 to move upward. The upward movement of the slider 14 drives the cleaning brush 15 to move upward as a whole. When the cleaning brush 15 moves upward, it wipes away the dust and other dirt on the surface of the fan blades until the cleaning brush 15 reaches the top. The user then uses a brush to remove the dirt and other dirt adhering to the surface. The cleaning brush 15 can remove dirt from its entire surface. During this process, the dirt that has been removed will not re-enter the brushless fan 2 due to the user's brushing motion (this is because when the cleaning brush 15 reaches the top of the fan blades of the brushless fan 2, the upper surface of the fan blades and the upper surface of the cleaning brush 15 remain horizontal and sealed). This avoids the inconvenience of disassembling the entire brushless fan 2. Furthermore, when the linkage ring 18 is not operated, the cleaning brush 15 will not move within the slide groove 13. This limitation can be achieved by adding corresponding connecting springs to the slider 14 on the outside of the cleaning brush 15 and the slide groove 13, so that the cleaning brush 15 can be positioned by the tension of the connecting springs when it is not in use.

[0045] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A synergistically noise-reducing wind protection ring for a brushless fan, comprising a wind protection ring (3), characterized in that The inner side of the wind shield (3) is provided with a brushless fan (2), and the outer end of the wind shield (3) is provided with a fan housing (1). A connection component for shock absorption is provided between the wind shield (3) and the fan housing (1). The connection component includes an upper shock-absorbing spring (6), an annular groove (7), and an upper positioning groove (8) connected to the upper end of the fan housing (1). The connection component also includes a lower positioning groove (9), a buckle (10), a slot (11), and a lower shock-absorbing spring (12) connected to the lower end of the fan housing (1). The outer end of the wind shield (3) is provided with a silicone gasket (4) and a shock-absorbing pad (5) for shock absorption.

2. The synergistically noise-reducing wind-shield ring for brushless fan according to claim 1, characterized in that, The upper inner surface of the fan housing (1) is fixed to the annular groove (7), and the annular groove (7) is fixedly connected to the upper outer surface of the upper shock-absorbing spring (6). The lower end of the upper shock-absorbing spring (6) is wrapped in the upper positioning groove (8), and the upper positioning groove (8) is embedded in the upper inner surface of the windproof ring (3).

3. The synergistically noise-reducing wind guard for a brushless fan of claim 1, wherein, The lower positioning groove (9) is embedded in the lower center of the wind shield (3). The lower positioning groove (9) extends through the lower outer side of the wind shield (3). The upper end of the lower damping spring (12) is fixedly connected to the inner end of the lower positioning groove (9). The lower end of the lower damping spring (12) is fixedly connected to the lower inner surface of the fan housing (1). The buckles (10) are fixed at equal intervals in the lower positioning groove (9) of the wind shield (3). The buckles (10) and the slots (11) are correspondingly engaged. The slots (11) are arranged in a ring array in the center of the lower end of the fan housing (1).

4. The synergistically noise-reducing wind-shield ring for brushless fan according to claim 1, characterized in that, The silicone gasket (4) is wrapped around the outer end of the wind shield (3), and the silicone gasket (4) is installed between the fan housing (1) and the side of the wind shield (3). The shock-absorbing pad (5) is fixed to the lower end of the wind shield (3), and the shock-absorbing pad (5) is installed between the bottom end of the fan housing (1) and the wind shield (3).

5. The synergistically noise-reducing brushless fan guard of claim 1, wherein, The lower end of the air guard (3) is provided with a cleaning brush (15) for cleaning the brushless fan (2) and a moving component for the cleaning brush (15) to move up and down. The moving component includes multiple sets of rope grooves (17) and multiple sets of linkage ropes (16) passing through the air guard (3). Each set of rope grooves (17) has a sliding groove (13) at its outer end. Multiple sets of sliders (14) are connected between the sliding groove (13) and the cleaning brush (15). The upper and lower ends of the multiple sets of linkage ropes (16) are respectively provided with linkage rings (18) and rope blocks (19). The outer end of the linkage ring (18) is provided with a ring groove (20).

6. The synergistically noise-reducing brushless fan guard of claim 5, wherein, The cleaning brush (15) includes multiple sets of cleaning sub-brushes and a set of cleaning rings connected to the cleaning sub-brushes. Each set of cleaning sub-brushes is located between two adjacent fan blades of the brushless fan (2). Multiple sets of sliders (14) are arranged in a ring array at the outer end of the cleaning ring. The sliders (14) are pierced by rope grooves (17), and the rope blocks (19) abut against the lower end of the sliders (14).

7. The synergistically noise-reducing brushless fan guard of claim 6, wherein, The rope block (19) and the linkage ring (18) are connected by a linkage rope (16). The two ends of the linkage rope (16) are fixedly connected to the rope block (19) and the linkage ring (18) respectively. The linkage ring (18) rotates along the ring groove (20). The ring groove (20) is embedded in the upper part of the windproof ring (3) on the inner side.

8. The synergistically noise-reducing brushless fan guard of claim 7, wherein, The linkage rope (16) passes through the rope groove (17) inside the slider (14) and the rope groove (17) at the upper end of the windproof ring (3). When the rope groove (17) passes through the lower side of the upper end of the windproof ring (3), it is perpendicular to the slide groove (13), and when the rope groove (17) passes through the upper side of the upper end of the windproof ring (3), it passes obliquely through the exit groove (20).

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