Low-noise diagonal flow fan

Abstract

The utility model discloses a low-noise diagonal flow fan and relates to the technical field of diagonal flow fans, the joint of a first machine barrel and a second machine barrel is provided with a connecting flange and is connected with a storage ring through the connecting flange and a lateral flange, the inner wall of the storage ring is provided with a plurality of through grooves, the upper end of the storage ring is provided with two opposite baffle rings, and the baffle rings are arranged in the through grooves. A storage bin is formed between the storage ring and the baffle ring, a plurality of storage blocks are embedded in the storage bin, porous sound absorption materials are arranged in the storage blocks, and noise elimination in the machine barrel is achieved through the porous sound absorption materials and the through grooves; elastic strips are arranged on the two sides of the storage block, the storage block is clamped in the storage bin by extruding the elastic strips, and blocking is achieved through a baffle ring; a storage ring is arranged at the joint of the machine barrel and filled with an efficient porous sound absorption material, noise of the fan is absorbed, a quiet environment is created, pollution is reduced, a storage block is fixed through an elastic strip, vibration noise is reduced, stability is improved, dust is filtered while noise is reduced through the porous material, and the service life of the fan is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of oblique flow fans, in particular to a low-noise oblique flow fan. Background Art

[0002] Diagonal flow fans, also known as mixed flow fans, are a type of fan between axial flow fans and centrifugal fans. Their unique impeller design creates both centrifugal and axial motion as the air passes through them, creating a blend of both axial and centrifugal flow. Diagonal flow fans use angled blades to spin the air into a spiral flow that propels it toward the outlet. This process, the air is subjected to both centrifugal and axial forces, achieving a good balance between air volume and pressure.

[0003] However, diagonal flow fans face noise issues in practical applications, particularly at the junction of the two barrels. This noise is generated by the intense interaction between the high-speed rotation of the blades and the airflow. At high speeds, friction and impact between the blades and the airflow exacerbate the noise. Furthermore, the junction of the two barrels may contain gaps, unevenness, and other structural issues. This creates complex flow phenomena such as eddies and turbulence, further exacerbating the generation and propagation of noise. Utility Model Content

[0004] The purpose of the present invention is to provide a low-noise diagonal flow fan to solve the problems raised in the above background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A low-noise diagonal flow fan comprises a first support leg, a second support leg, a barrel, a wind wheel, and a driving device, wherein the first support leg is located at the lower end of the first barrel, the second barrel is located at the side end of the first barrel, the second support leg is located at the lower end of the second barrel, the driving device is installed in the first barrel, the output end of the driving device is connected to the wind wheel, and the wind wheel is located in the second barrel;

[0007] A connecting flange is provided at the connection between the first barrel and the second barrel, and a storage ring is connected through the connecting flange and the lateral flange. A plurality of through grooves are provided on the inner wall of the storage ring. Two opposing retaining rings are provided at the upper end of the storage ring, and a storage bin is formed between the storage rings and the retaining rings. A plurality of storage blocks are embedded in the storage bin. A porous sound-absorbing material is provided inside the storage block. Noise reduction inside the barrel is achieved through the porous sound-absorbing material and the through grooves.

[0008] Elastic strips are provided on both sides of the storage block, and the storage block is clamped in the storage bin by squeezing the elastic strips, and is blocked by a retaining ring.

[0009] In a preferred embodiment of the present invention, the first leg is welded to the first barrel, the second leg is welded to the second barrel, the first barrel and the second barrel are both truncated cone-shaped barrels, and the first barrel and the second barrel are symmetrically designed.

[0010] In a preferred embodiment of the present invention, the driving device is fixed to the first barrel via a bracket, and another set of connecting flanges are provided at the openings of the first barrel and the second barrel, and the connecting flanges are small-diameter flanges.

[0011] In a preferred embodiment of the present invention, the connecting flange provided at the connection between the first barrel and the second barrel is a large-diameter flange, the diameter of the lateral flange is the same as that of the large-diameter flange, and a sealing ring is provided at the connection between the lateral flange and the large-diameter flange.

[0012] In the preferred embodiment of the present invention, the two elastic strips are distributed on the side walls of the storage block, the elastic strips are welded to the storage block, and the opening at the lower end of the storage block is designed to face the through groove, the elastic strips are made of elastic metal plates, and the cross-section of the elastic strips is designed to be "C" shaped.

[0013] In a preferred embodiment of the present invention, the porous sound-absorbing material is any one of organic fiber material, glass wool, mineral wool and rock wool.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By installing a storage ring at the barrel connection and filling it with highly effective porous sound-absorbing material, the fan effectively absorbs the noise generated during operation, providing users with a quieter working environment and reducing noise pollution. This low-noise operation makes the fan particularly suitable for locations with high noise requirements, such as offices, laboratories, and hospitals, enhancing the overall user experience. By reducing noise pollution and improving energy efficiency, this fan not only meets the needs of modern industry, but also contributes to environmental protection and sustainable development.

[0016] Elastic strips embedded on either side of the storage block not only secure it but also deform under load to fit more closely to the storage bin wall, reducing noise caused by vibration or looseness and improving the overall operational stability of the blower. The unique asymmetric layout and frustum-shaped design of the second barrel are not only aesthetically pleasing but also optimize the airflow path, reducing wind resistance and improving airflow smoothness and blower performance.

[0017] The large-diameter flange at the barrel connection fits tightly with the lateral flange, complemented by high-quality sealing rings, ensuring a tight seal between the barrels, preventing air leakage and further reducing noise caused by such leaks. The porous sound-absorbing material in the silencer not only effectively reduces noise but also filters dust and impurities from the air to a certain extent, reducing wear on the fan's internal components and thus extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a diagram showing the overall structure of the utility model;

[0020] Figure 2 This is an exploded view of the overall structure of the utility model;

[0021] Figure 3 This is an exploded view of the storage ring and storage block of the utility model;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0023] In the figure: 1. First support leg; 2. First barrel; 3. Second support leg; 4. Second barrel; 5. Wind wheel; 6. Drive device; 7. Connecting flange; 8. Storage ring; 9. Side flange; 10. Through groove; 11. Retaining ring; 12. Storage bin; 13. Storage block; 14. Elastic strip; 15. Porous sound-absorbing material. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1:

[0026] In today's industrial landscape, where both efficiency and environmental protection are paramount, low-noise diagonal flow fans, with their superior performance and unique design, have become an ideal choice for numerous applications. This article will provide a detailed analysis of a typical low-noise diagonal flow fan. By providing detailed and empirical research, it will delve into its structural characteristics, operating principles, and noise reduction mechanisms, presenting a more comprehensive and vivid image of the fan.

[0027] See also Figure 1 - Figure 4As shown, this low-noise diagonal flow blower features an ingenious design and compact structure, primarily consisting of core components such as the support legs, barrel, impeller 5, and drive unit 6. The first support leg 2 is securely welded to the bottom of the first barrel 2, providing a solid foundation for the entire blower. The second barrel 4 is cleverly positioned at the side of the first barrel 2, creating a unique asymmetric layout that optimizes air flow and reduces wind resistance. The second support leg 3 is also welded to the bottom of the second barrel 4, further enhancing the stability of the overall structure.

[0028] The drive unit 6 is cleverly installed within the first barrel 2 and connected to the impeller 5 via a precise transmission mechanism. The impeller 5, the "heart" of the entire blower, is located within the second barrel 4. When the drive unit 6 is activated, it rotates at high speed, generating a powerful airflow. This design not only improves energy conversion efficiency but also ensures long-term, stable operation of the blower.

[0029] To achieve low-noise operation, the fan features a clever connection flange 7 at the barrel connection, connected to a unique storage ring 8 via a lateral flange 9. The inner wall of storage ring 8 is covered with carefully designed through-slots 10, which tightly connect to storage blocks 13 within a storage compartment 12. Storage blocks 13 are filled with highly efficient porous sound-absorbing materials 15, such as organic fiber, glass wool, mineral wool, or rock wool. These materials, with their excellent sound-absorbing properties, effectively absorb the noise generated during fan operation.

[0030] Elastic strips 14 are embedded on both sides of the storage block 13. These strips not only secure the storage block 13 but also deform when squeezed by external forces, allowing it to more closely adhere to the walls of the storage bin 12, further enhancing the sound absorption effect. When the fan is running, the airflow through the slots 10 and the porous sound-absorbing material 15 work together to significantly reduce noise, creating a quieter working environment for the user.

[0031] This blower also demonstrates exceptional craftsmanship in its attention to detail. Both the first barrel 2 and the second barrel 4 utilize a frustoconical design, which is not only aesthetically pleasing but also effectively directs airflow, enhancing blower performance. Furthermore, the large-diameter flange at the barrel connection fits tightly with the lateral flange 9, complemented by high-quality sealing rings, ensuring a tight seal between the barrels and preventing air leakage.

[0032] Furthermore, the elastic strips 14 on the storage block 13 are made of a resilient metal sheet with a C-shaped cross-section. This design ensures sufficient elasticity while maintaining stable performance over long-term use. The opening at the bottom of the storage block 13 is aligned with the through-slot 10, allowing airflow to flow smoothly through the sound-absorbing material, achieving optimal sound absorption.

[0033] In summary, this low-noise diagonal flow fan stands out among other fan products thanks to its sophisticated structural design, efficient drive system, and innovative noise reduction mechanism. It not only meets modern industry's demands for high efficiency, energy conservation, and environmental protection, but also provides users with a more comfortable and quiet working environment. With the continuous advancement of technology and the emergence of innovative designs, we have reason to believe that future fan products will be even more intelligent, efficient, and environmentally friendly, contributing even more to the sustainable development of mankind.

[0034] Installation Process: Check that all components (support legs, barrel, impeller 5, drive unit 6, connecting flange 7, storage ring 8, storage block 13, etc.) are complete and intact. Prepare installation tools, such as a welder, screwdriver, and wrench. Weld the first support leg 2 to the bottom of the first barrel 2, ensuring a secure weld. Place the second barrel 4 at the side of the first barrel 2 according to the designed position and adjust it to the optimal angle to ensure unobstructed air flow. Weld the second support leg 3 to the bottom of the second barrel 4, also ensuring weld quality.

[0035] Open the top or side cover of the first barrel 2 and insert and secure the drive unit 6. Connect the drive unit 6 to the transmission mechanism of the wind wheel 5 to ensure smooth and stable transmission. Close the barrel cover and check for sealing.

[0036] Install connecting flange 7 at the barrel connection and ensure a good seal between the flanges. Attach storage ring 8 to the barrel via lateral flange 9. Install storage block 13 within storage ring 8, ensuring that the through slots 10 on storage block 13 align with those on the barrel. Insert elastic strips 14 on both sides of storage block 13 and adjust for an optimal fit.

[0037] Connect the power supply, start the drive unit 6, and check that the impeller 5 rotates smoothly and without unusual noise. Observe the noise level after the airflow passes through the silencer to ensure it meets design requirements. Check the connections of all components for looseness or air leakage, and adjust any such connections promptly.

[0038] Instructions for Use: Confirm that the power supply is connected correctly and the voltage is stable. Check that there are no obstructions around the fan to ensure smooth airflow. Confirm that all fan components are securely installed and not loose. Press the start button, and the drive unit 6 will start operating, causing the impeller 5 to rotate. Observe the fan's operating status, noting any abnormal sounds or vibrations. Control the fan's air volume by adjusting the speed of the drive unit 6 as needed. Monitor the airflow velocity and pressure at the fan outlet to ensure that they meet operating requirements. Regularly check the fan's operating status, including bearing temperature and vibration. Clean dust and debris from the fan to keep the air flow unobstructed. Inspect and replace worn parts, such as bearings and seals. Regularly maintain the silencer to ensure the sound-absorbing material is performing properly. To stop the fan, first press the stop button to gradually slow the drive unit 6 to a stop. Disconnect the power supply to ensure the fan has completely stopped. Clean the working area around the fan and prepare for the next use.

[0039] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A low-noise diagonal flow fan, comprising a first support leg (1), a second support leg (3), a barrel, a wind wheel (5) and a driving device (6), wherein the first support leg (1) is located at the lower end of the first barrel (2), the second barrel (4) is located at the side end of the first barrel (2), the second support leg (3) is located at the lower end of the second barrel (4), the driving device (6) is installed in the first barrel (2), the output end of the driving device (6) is connected to the wind wheel (5), and the wind wheel (5) is located in the second barrel (4); characterized in that A connecting flange (7) is provided at the connection between the first barrel (2) and the second barrel (4), and a storage ring (8) is connected via the connecting flange (7) and the lateral flange (9), and a plurality of through grooves (10) are provided on the inner wall of the storage ring (8), two opposing retaining rings (11) are provided at the upper end of the storage ring (8), and a storage bin (12) is formed between the storage ring (8) and the retaining ring (11), and a plurality of storage blocks (13) are embedded in the bin of the storage bin (12), and a porous sound-absorbing material (15) is provided inside the storage block (13), and sound elimination inside the barrel is achieved through the porous sound-absorbing material (15) and the through grooves (10); Elastic strips (14) are provided on both sides of the storage block (13), and the storage block (13) is clamped in the storage bin (12) by squeezing the elastic strips (14), and is blocked by the retaining ring (11).

2. A low-noise diagonal flow fan according to claim 1, characterized in that: The first support leg (1) is welded to the first barrel (2), and the second support leg (3) is welded to the second barrel (4). Both the first barrel (2) and the second barrel (4) are truncated cone-shaped barrels, and the first barrel (2) and the second barrel (4) are symmetrically designed.

3. A low-noise diagonal flow fan according to claim 2, characterized in that: The driving device (6) is fixed to the first barrel (2) via a bracket, and another set of connecting flanges (7) are provided at the openings of the first barrel (2) and the second barrel (4), and the connecting flanges (7) are small-diameter flanges.

4. A low-noise diagonal flow fan according to claim 3, characterized in that: The connecting flange (7) provided at the connection between the first barrel (2) and the second barrel (4) is a large-diameter flange, the lateral flange (9) has the same diameter as the large-diameter flange, and a sealing ring is provided at the connection between the lateral flange (9) and the large-diameter flange.

5. A low-noise diagonal flow fan according to claim 4, characterized in that: The two elastic strips (14) are distributed on the side walls of the storage block (13), the elastic strips (14) are welded to the storage block (13), and the lower end opening of the storage block (13) is designed to face the through slot (10), the elastic strips (14) are made of elastic metal plates, and the cross section of the elastic strips (14) is designed to be "C" shaped.

6. A low-noise diagonal flow fan according to claim 5, characterized in that: The porous sound-absorbing material (15) is any one of organic fiber material, glass wool, mineral wool, and rock wool.

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