A noise reduction structure for a noise reduction fan

Abstract

The application discloses a noise reduction structure for a noise reduction fan, wherein the noise reduction fan comprises a fan mounting plate, a fan base and a fan body which are connected in sequence, the fan base and the fan mounting plate are hollow and circular in shape, and the noise reduction structure comprises a plurality of noise reduction rings and a plurality of connecting assemblies; the plurality of noise reduction rings are arranged coaxially in sequence in the fan mounting plate; the connecting assemblies are connected in sequence with the plurality of noise reduction rings; and one end of the plurality of connecting assemblies is connected with the fan mounting plate respectively, and the other end of the plurality of connecting assemblies is gathered and connected at the shaft center of the plurality of noise reduction rings. The plurality of noise reduction rings which are arranged coaxially in sequence and the plurality of connecting assemblies can effectively reduce the noise of the fan, improve the comfort of the environment, and firmly fix the noise reduction rings, so that the problems of poor noise reduction effect and unstable noise reduction structure of the existing fan are solved.

Description

Technical Field

[0001] This invention relates to fans, and more particularly to a noise reduction structure for noise-reducing fans. Background Technology

[0002] Fans are core components of various ventilation and heat dissipation devices, and their operating noise directly affects the comfort of the user environment. Noise reduction structures, as a key component of noise-reducing fans, are crucial, and their design determines the noise reduction effect and the fan's operational stability. In daily use, fans must balance heat dissipation efficiency with noise control to avoid disturbing the surrounding environment and affecting the user experience. This is especially true in noise-sensitive environments such as indoor spaces and offices, where the requirements for noise reduction structures are even more stringent.

[0003] Currently, existing noise reduction structures for fans have numerous flaws, making it difficult to meet the needs of general-purpose fans. Most noise reduction structures use only a single noise reduction component, which cannot effectively reduce the airflow turbulence noise and mechanical vibration noise generated during fan operation, resulting in limited noise reduction effects. Some fans with noise reduction rings have a messy layout and lack precise coaxial positioning, which easily leads to airflow turbulence, affecting heat dissipation efficiency and failing to achieve uniform noise reduction. Furthermore, the noise reduction rings are not securely fixed and are prone to displacement, loosening, or even colliding with the fan body under the influence of fan vibrations, generating additional noise. Summary of the Invention

[0004] The purpose of this invention is to provide a noise reduction structure for noise-reducing fans, aiming to solve the problems of poor noise reduction effect and unstable noise reduction structure of existing fans.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention provides a noise reduction structure for a noise-reducing fan. The noise-reducing fan includes a fan mounting plate, a fan base, and a fan body connected in sequence. The fan base and the fan mounting plate are hollow and circular. The noise reduction structure includes multiple noise reduction rings and multiple connecting components. The multiple noise reduction rings are sequentially contracted and coaxially arranged inside the fan mounting plate. The connecting components are sequentially connected to the multiple noise reduction rings, and one end of each connecting component is connected to the fan mounting plate, while the other end converges and connects to the axis of the multiple noise reduction rings.

[0006] Furthermore, the noise reduction ring has a first protrusion connected end to end on the side facing the fan body.

[0007] Furthermore, the first protrusion is triangular, and the included angle of the first protrusion ranges from 60° to 150°.

[0008] Furthermore, the noise reduction structure also includes: a fixing block, which is disposed at the axis of the noise reduction ring; each of the connecting components includes multiple connectors located on the same axis; the two ends of the connectors near the fan mounting plate are respectively connected to the fan mounting plate and the adjacent noise reduction ring; the two ends of the connectors near the fixing block are respectively connected to the fixing block and the adjacent noise reduction ring; and the two ends of the remaining connectors are respectively connected to two adjacent noise reduction rings.

[0009] Furthermore, the connector has a second protrusion on the side facing the fan body. The second protrusion is triangular, and the included angle of the second protrusion is in the range of 30° to 90°.

[0010] Furthermore, the connecting components are provided in eight groups, and the included angle between two adjacent connecting components is 45°.

[0011] Furthermore, the fan mounting plate is detachably mounted on one side of the fan base, and the fan body is detachably mounted on the other side of the fan base, with the fan body blowing air towards the noise reduction structure.

[0012] Furthermore, the noise-reducing fan also includes a vibration-damping structure, which includes: The shock-absorbing cotton has a mounting groove on the side of the fan base facing the fan mounting plate. One side of the shock-absorbing cotton is detachably installed in the mounting groove. One side of the fan body has an abutment part. After the abutment part passes through the fan base, the other side of the shock-absorbing cotton abuts against the abutment part.

[0013] Furthermore, the shock absorption structure also includes a shock absorber, which is connected to the side of the fixing block facing the fan body and abuts against the abutting part.

[0014] Furthermore, the noise-reducing fan also includes a quick-release structure. The noise-reducing fan is installed on the refrigerator body. The quick-release structure includes two buckles located on both sides of the bottom of the fan mounting plate and two limiting members set on the refrigerator body corresponding to the two buckles. The buckles can be detachably abutted against the limiting members.

[0015] This invention provides a noise reduction structure for a noise-reducing fan. The noise-reducing fan includes a fan mounting plate, a fan base, and a fan body connected in sequence. The fan base and the fan mounting plate are hollow and circular. The noise reduction structure includes multiple noise-reducing rings and multiple connecting components. The multiple noise-reducing rings are sequentially contracted and coaxially arranged inside the fan mounting plate. The connecting components are sequentially connected to the multiple noise-reducing rings, with one end of each connecting component connected to the fan mounting plate and the other end converging and connecting to the axis of the multiple noise-reducing rings. This invention, through multiple sequentially contracting and coaxially arranged noise-reducing rings, combined with multiple connecting components, can effectively divide and buffer the airflow generated during fan operation, reducing airflow noise, and absorb the mechanical noise generated by fan vibration. The dual noise reduction effect is significant, effectively reducing fan noise and improving environmental comfort. The connecting components, with one end connected to the fan mounting plate and the other end converging at the axis of the noise-reducing rings, ensure the noise-reducing rings are firmly fixed while avoiding airflow obstruction and not affecting the fan's blowing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view structural schematic diagram of a noise-reducing fan provided in an embodiment of the present invention; Figure 2 This is a structural schematic diagram of a noise-reducing fan from a second perspective, provided in an embodiment of the present invention. Figure 3 This is a first-view structural schematic diagram of the fan mounting plate provided in an embodiment of the present invention; Figure 4 Cross-sectional view AA provided for embodiments of the present invention; Figure 5 This is a schematic diagram of the fan mounting plate from a second perspective, provided in an embodiment of the present invention. Figure 6 Partial Figure B provided for an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the fan base provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the fan body provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the refrigerator body provided in an embodiment of the present invention; Figure 10 Partial view C provided for an embodiment of the present invention; Figure 11This is a schematic diagram of the quick-release structure provided in an embodiment of the present invention.

[0018] Explanation of the markings in the image: 1. Noise-reducing fan; 11. Fan base; 12. Fan mounting plate; 13. Fan body; 131. Abutment part; 14. Noise-reducing structure; 141. Noise-reducing ring; 142. Connecting component; 143. First protrusion; 144. Fixing block; 145. Connector; 146. Second protrusion; 15. Shock-absorbing structure; 151. Shock-absorbing cotton; 152. Shock-absorbing sheet; 16. Mounting slot; 17. Quick-release structure; 171. Buckle; 172. Limiting component; 2. Refrigerator body. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention 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 the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0021] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0023] Combination Figure 1-11As shown, the present invention provides a noise reduction structure 14 for a noise-reducing fan. The noise-reducing fan 1 includes a fan mounting plate 12, a fan base 11, and a fan body 13 connected in sequence. The fan base 11 and the fan mounting plate 12 are hollow and circular. The noise reduction structure 14 includes a plurality of noise reduction rings 141 and a plurality of connecting components 142. The plurality of noise reduction rings 141 are sequentially contracted and coaxially arranged inside the fan mounting plate 12. The connecting components 142 are sequentially connected to the plurality of noise reduction rings 141. One end of the plurality of connecting components 142 is connected to the fan mounting plate 12, and the other end is converged and connected to the axis of the plurality of noise reduction rings 141.

[0024] In this embodiment of the invention, the noise reduction structure 14 employs multiple sequentially contracting and coaxially arranged noise reduction rings 141, along with multiple connecting components 142. This effectively divides and buffers the airflow generated during fan operation, reducing airflow noise, and also absorbs the mechanical noise generated by fan vibration. The dual noise reduction effect is significant, effectively reducing fan noise and improving environmental comfort. One end of the connecting component 142 is connected to the fan mounting plate 12, and the other end converges at the axis of the noise reduction ring 141, ensuring a secure fixation of the noise reduction ring 141 while avoiding obstruction of airflow and not affecting the fan's blowing efficiency.

[0025] In some specific embodiments, the noise reduction ring 141 is provided with a first protrusion 143 connected end to end on the side facing the fan body 13.

[0026] In this embodiment, the annular first protrusion 143 connected end to end can further optimize the noise reduction effect. It can effectively divide the turbulent airflow generated when the fan body 13 is running, slow down the airflow speed, straighten the airflow direction, weaken the noise generated by the airflow hitting the noise reduction ring 141, and absorb the mechanical noise transmitted by the fan vibration, further reducing the fan noise in the enclosed space and improving the environmental comfort.

[0027] In some specific embodiments, the first protrusion 143 is triangular, and the included angle of the first protrusion 143 is in the range of 60° to 150°.

[0028] In this embodiment, the triangular structure itself has good stability. Combined with the end-to-end connection design, it can further enhance the structural strength of the noise reduction ring 141 and prevent the noise reduction ring 141 from deforming or shifting. The 60°~150° included angle design can maximize the contact with the airflow generated by the fan operation, effectively divide the turbulent airflow and reduce airflow noise, without blocking the airflow channel, thus ensuring heat dissipation efficiency.

[0029] In some specific embodiments, the noise reduction structure 14 further includes: a fixing block 144, which is disposed at the axis of the noise reduction ring 141; each connecting component 142 includes multiple connectors 145 located on the same axis; the two ends of the connectors 145 near the fan mounting plate 12 are respectively connected to the fan mounting plate 12 and the adjacent noise reduction ring 141; the two ends of the connectors 145 near the fixing block 144 are respectively connected to the fixing block 144 and the adjacent noise reduction ring 141; and the two ends of the remaining connectors 145 are respectively connected to two adjacent noise reduction rings 141.

[0030] In this embodiment, the fixing block 144 is located at the axis of the noise reduction ring 141, serving as the core fixing fulcrum of the entire noise reduction structure 14. This effectively prevents the noise reduction ring 141 from shifting or shaking, ensuring stable noise reduction performance. Multiple sets of coaxial connectors 145 have clearly defined functions: the connector 145 near the fan mounting plate 12 securely connects to the mounting plate; the connector 145 near the fixing block 144 precisely fixes to the axis; and the remaining connectors 145 are connected in series with each noise reduction ring 141. This ensures that all noise reduction rings 141 are coaxially arranged and that the force is evenly distributed, enhancing the overall structural stability.

[0031] In some specific embodiments, the connector 145 is provided with a second protrusion 146 on the side facing the fan body 13. The second protrusion 146 is triangular, and the included angle of the second protrusion 146 is in the range of 30° to 90°.

[0032] In this embodiment, the included angle of the second protrusion 146 is designed to range from 30° to 90°. This design effectively diverts the airflow generated by the fan, reducing noise caused by airflow impact, and also enhances the fit between the connector 145 and the fan body 13, improving connection stability. The triangular structure combines stability and guidance, reducing component wobbling and preventing additional noise, while not obstructing the airflow channel and ensuring heat dissipation efficiency.

[0033] In some specific embodiments, the connecting components 142 are provided in eight groups, and the included angle between two adjacent connecting components 142 is 45°.

[0034] In this embodiment, the eight sets of connecting components 142 are evenly distributed, and the included angle of 45° can achieve balanced force distribution, avoid local force concentration, enhance the overall structural stability, and prevent the connection from loosening.

[0035] In some specific embodiments, the fan mounting plate 12 is detachably mounted on one side of the fan base 11, the fan body 13 is detachably mounted on the other side of the fan base 11, and the fan body 13 blows air toward the noise reduction structure 14.

[0036] In this embodiment, the fan mounting plate 12 corresponds to the shape of the fan base 11 and can be detached and installed. The fan body 13 can also be detached and installed on the fan base 11, realizing the modular and detachable design of each component of the fan. Compared with the existing integrated structure, it greatly improves the convenience of disassembly and assembly. When maintaining or replacing the fan body 13, the noise reduction structure 14 or the fan base 11 in the later stage, it is not necessary to disassemble the entire fan, saving manpower and time costs and meeting the needs of rapid maintenance. The fan body 13 blows air in the direction of the noise reduction structure 14, which can effectively reduce fan noise and improve environmental comfort.

[0037] In some specific embodiments, the noise-reducing fan 1 further includes a vibration damping structure 15, which includes: The shock-absorbing cotton 151 is provided with a mounting groove 16 on the side of the fan base 11 facing the fan mounting plate 12. The shock-absorbing cotton 151 is detachably installed in the mounting groove 16 on one side. The fan body 13 is provided with an abutment part 131 on one side. After the abutment part 131 passes through the fan base 11, the other side of the shock-absorbing cotton 151 abuts against the abutment part 131.

[0038] In this embodiment, the mounting groove 16 on the fan base 11 provides a stable mounting carrier for the shock-absorbing cotton 151, enabling precise positioning of the shock-absorbing cotton 151, preventing displacement, and ensuring stable shock absorption. The shock-absorbing cotton 151 can be detachably installed in the mounting groove 16, facilitating later maintenance and replacement, and reducing usage costs. When the fan body 13 is installed, the abutment part 131 penetrates the fan base 11, and the shock-absorbing cotton 151 abuts tightly against the abutment part 131, effectively absorbing the vibration generated during fan operation. This protects the fan body 13 and related components, extends its service life, and reduces noise generated by vibration.

[0039] In some specific embodiments, the damping structure 15 further includes a damping plate 152, which is connected to the side of the fixing block 144 facing the fan body 13 and abuts against the abutment portion 131.

[0040] In this embodiment, the damping plate 152 is connected to the fixing block 144 and abuts against the abutment part 131. It can accurately absorb the residual vibration transmitted by the noise reduction ring 141. Together with the damping cotton 151, it forms a double damping protection, effectively reducing the mechanical vibration during fan operation and preventing the vibration from being transmitted to other fan components and generating additional noise. At the same time, the damping plate 152 can help fix the noise reduction ring 141, enhance the stability of the noise reduction ring 141, prevent the noise reduction ring 141 from shifting or shaking during fan operation, and further improve the structural robustness in conjunction with the connecting component 142.

[0041] It is understood that the abutting part 131 includes an abutting surface facing the damping pad 152 and an abutting groove facing the damping cotton 151, with the abutting surface and the abutting groove being arranged in opposite directions.

[0042] In some specific embodiments, the noise-reducing fan 1 also includes a quick-release structure 17. The noise-reducing fan 1 is mounted on the refrigerator body 2. The quick-release structure 17 includes two buckles 171 located on both sides of the bottom of the fan mounting plate 12 and two limiting members 172 provided on the refrigerator body 2 corresponding to the two buckles 171. The buckles 171 can be detachably abutted against the limiting members 172.

[0043] In this embodiment, two clips 171 are symmetrically arranged at the bottom of the fan mounting plate 12, precisely corresponding to the limiting member 172 on the refrigerator body 2. The clips 171 and the limiting member 172 are detachably connected, allowing for quick installation and removal of the fan without the need for complex tools, significantly improving subsequent maintenance efficiency and reducing labor costs. The tight connection between the clips 171 and the limiting member 172 effectively prevents the fan from shifting or shaking, ensuring stable fan operation and avoiding additional noise or component damage.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A noise reduction structure for a noise-reducing fan, characterized in that, The noise-reducing fan includes a fan mounting plate, a fan base, and a fan body connected in sequence. The fan base and the fan mounting plate are hollow and circular. The noise-reducing structure includes: Multiple noise reduction rings and multiple connecting components are provided. The multiple noise reduction rings are sequentially contracted and coaxially arranged inside the fan mounting plate. The connecting components are sequentially connected to the multiple noise reduction rings. One end of each of the multiple connecting components is connected to the fan mounting plate, and the other end converges and connects to the axis of the multiple noise reduction rings.

2. The noise reduction structure for a noise-reducing fan according to claim 1, characterized in that, The noise reduction ring has a first protrusion on the side facing the fan body, with the two ends connected.

3. The noise reduction structure for a noise-reducing fan according to claim 2, characterized in that, The first protrusion is triangular, and the included angle of the first protrusion ranges from 60° to 150°.

4. The noise reduction structure for a noise-reducing fan according to claim 1, characterized in that, Also includes: A fixing block is disposed at the axis of the noise reduction ring. Each connecting component includes multiple connectors located on the same axis. The two ends of the connectors near the fan mounting plate are respectively connected to the fan mounting plate and the adjacent noise reduction ring. The two ends of the connectors near the fixing block are respectively connected to the fixing block and the adjacent noise reduction ring. The two ends of the remaining connectors are respectively connected to two adjacent noise reduction rings.

5. The noise reduction structure for a noise-reducing fan according to claim 4, characterized in that, The connector has a second protrusion on the side facing the fan body. The second protrusion is triangular and the included angle of the second protrusion is in the range of 30° to 90°.

6. The noise reduction structure according to claim 4, characterized in that, The connecting components are provided in eight groups, and the included angle between two adjacent connecting components is 45°.

7. The noise reduction structure for a noise-reducing fan according to claim 4, characterized in that, The fan mounting plate is detachably mounted on one side of the fan base, and the fan body is detachably mounted on the other side of the fan base, with the fan body blowing air in the direction of the noise reduction structure.

8. The noise reduction structure for a noise-reducing fan according to claim 7, characterized in that, The noise-reducing fan also includes a vibration-damping structure, which includes: The shock-absorbing cotton has a mounting groove on the side of the fan base facing the fan mounting plate. One side of the shock-absorbing cotton is detachably installed in the mounting groove. One side of the fan body has an abutment part. After the abutment part passes through the fan base, the other side of the shock-absorbing cotton abuts against the abutment part.

9. The noise reduction structure for a noise-reducing fan according to claim 8, characterized in that, The damping structure also includes: A shock absorber is attached to the side of the fixing block facing the fan body and abuts against the abutting part.

10. The noise reduction structure for a noise-reducing fan according to claim 7, characterized in that, The noise-reducing fan also includes a quick-release structure. The noise-reducing fan is installed on the refrigerator body. The quick-release structure includes two buckles located on both sides of the bottom of the fan mounting plate and two limiting members set on the refrigerator body corresponding to the two buckles. The buckles can be detachably abutted against the limiting members.

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