Centrifugal fan stabilizing structure

Abstract

The utility model provides a centrifugal fan stabilizing structure, and relates to the technical field of centrifugal fans. The centrifugal fan stabilizing structure comprises a fan shell, an impeller, a motor, a connecting shaft, a working box and a stabilizing mechanism, the impeller is arranged in the fan shell, the output end of the motor is connected with the connecting shaft, and the impeller is connected with the connecting shaft; the stabilizing mechanism comprises a water tank and a buffering assembly, the water tank is arranged in the working box, and the stabilizing mechanism is arranged in the water tank. The centrifugal fan has the advantages that the vibration amplitude of the centrifugal fan is effectively reduced, the operation stability of the centrifugal fan is improved, and the service life of the centrifugal fan is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of centrifugal fans, and in particular to a stabilizing structure of a centrifugal fan. Background Art

[0002] Centrifugal fans are a type of fluid machinery widely used in multiple industries. They use high-speed rotating impellers to accelerate the gas, then slow it down and change the flow direction, converting kinetic energy into potential energy (pressure).

[0003] Although centrifugal fans offer high air volume, stable performance, and smooth rotation, they can generate significant vibration during operation. This vibration not only reduces the fan's service life but can also damage surrounding equipment and structures. Therefore, a centrifugal fan stabilization structure is proposed to address this issue. Utility Model Content

[0004] In order to improve the problem that a centrifugal fan generates large vibrations during operation, which affects its service life, the present application provides a centrifugal fan stabilizing structure.

[0005] This application provides a centrifugal fan stabilization structure, which adopts the following technical solutions:

[0006] A centrifugal fan stabilization structure comprises: a fan housing, an impeller, a motor, a connecting shaft, a working box and a stabilization mechanism, wherein the impeller is arranged in the fan housing, the output end of the motor is connected to one end of the connecting shaft, and the impeller is connected to the connecting shaft;

[0007] The stabilizing mechanism includes a water tank and a buffer assembly. The water tank is arranged in the working box, and the buffer assembly is arranged in the water tank.

[0008] By adopting the above technical solution, the centrifugal fan stabilization structure can significantly reduce the vibration generated during fan operation. The water tank is filled with liquid, which increases the mass of the overall structure and helps to improve the stability of the fan. At the same time, the buffer assembly set in the water tank can play a role when the fan vibrates. Through the compression and expansion of the spring, it effectively absorbs and alleviates the vibration energy, thereby reducing the overall vibration amplitude of the fan. In addition, the design of the stabilization block enables the system to achieve dynamic balance in the liquid medium, further improving the system's anti-vibration ability. This technical solution not only enhances the stability and reliability of the centrifugal fan, but also helps to extend the service life of the equipment and improve the working environment.

[0009] Preferably, the buffer assembly includes a spring and a stabilizing block provided in the water tank, and one end of the spring is connected to the stabilizing block;

[0010] The stabilizing block is in contact with the liquid inside the water tank.

[0011] By adopting the above technical solution, the installation of a water tank with springs and stabilizers allows the design to utilize the liquid within the water tank to increase the overall mass of the fan during operation, thereby improving the stability of the entire fan. Furthermore, the springs and stabilizers work together to effectively absorb and mitigate vibrations generated by the fan, significantly reducing vibration amplitude and thus improving the overall stability of the fan. This structure not only helps extend the service life of the equipment, but also reduces noise pollution and other adverse effects caused by vibration, thereby improving the safety and comfort of the equipment operating environment.

[0012] Preferably, the stabilizing block is arranged on the surface of the liquid.

[0013] By adopting the above technical solution, the stabilizing block is placed on the liquid surface, and the elastic force of the spring is used to enable the stabilizing block to float up and down, effectively absorbing the vibration generated during the operation of the centrifugal fan, thereby significantly reducing the overall vibration amplitude of the fan; at the same time, the damping effect generated when the stabilizing block floats on the liquid surface further improves the stability of the system.

[0014] Preferably, the stabilizing block is arranged inside the liquid.

[0015] By adopting this technical solution, the stabilizing block is placed within the liquid inside the water tank. When the centrifugal fan vibrates, the stabilizing block can move within the liquid, using the liquid's resistance to dissipate the vibration energy, effectively reducing the fan's vibration amplitude and improving its operational stability. Placing the stabilizing block within the liquid allows it to better absorb vibrations, enhancing the stability of the overall structure.

[0016] Preferably, the periphery of the stabilizing block abuts against the side wall of the water tank, and a connecting hole is further provided on the stabilizing block.

[0017] By adopting this technical solution, the perimeter of the stabilizer block maintains close contact with the sidewalls of the water tank, effectively dispersing vibration energy and reducing vibration generated by the centrifugal fan during operation. Furthermore, the through-holes in the stabilizer block create resistance in the liquid, further enhancing the damping effect and better absorbing vibration, ensuring smoother fan operation and significantly reducing the negative impact of vibration.

[0018] Preferably, a baffle is further provided on the stabilizing block.

[0019] By adopting this technical solution, the baffle on the stabilizing block can adjust the size of the through-hole according to actual operating conditions, thereby changing the resistance and effectively improving the stabilizing block's ability to suppress fan vibration. This adjustable design ensures that the fan maintains good stability under different operating conditions, thereby improving overall operating efficiency.

[0020] Preferably, the motor is fixedly connected to the working box.

[0021] By adopting this technical solution, a stable fixed connection is formed between the motor and the working box, ensuring that the motor can be more firmly mounted on the working box during operation, improving the stability of the overall structure. This fixed connection method not only strengthens the fit between the motor and the working box, but also helps to reduce overall structural instability caused by motor vibration, thereby improving the reliability and efficiency of the entire centrifugal fan.

[0022] Preferably, a cover plate is further provided inside the water tank, wherein a plurality of through holes are provided on the cover plate, the lower portion of the cover plate is filled with liquid, and the upper portion of the cover plate is empty, and a working hole for the stabilizing block to pass through is also provided on the cover plate.

[0023] By adopting the above technical solution, the setting of the cover plate separates the liquid area inside the water tank from the empty area above. When the stabilizing block moves up and down through the working hole, the liquid flows through the through holes on the cover plate, increasing the resistance to the movement of the stabilizing block, thereby more effectively absorbing vibration energy and improving the stability of the centrifugal fan.

[0024] In summary, this application has at least one of the following beneficial effects:

[0025] 1. The stabilizing mechanism reduces vibrations by increasing the weight of the water tank and the water damping effect, thereby increasing the overall weight of the centrifugal fan. This helps to improve the stability of the fan during operation and reduce instability caused by vibration. At the same time, the elastic buffering and mass inertia of the buffer component are used to further absorb and disperse vibration energy, effectively reducing the vibration amplitude of the centrifugal fan and improving its operating stability and service life.

[0026] 2. The coordinated use of springs and stabilizers can significantly absorb and dissipate the vibration energy generated by the fan during operation, significantly reducing the vibration amplitude of the fan, helping to reduce equipment wear and extend the service life of the fan;

[0027] 3. The stabilizing block interacts with the liquid in the water tank, utilizing the damping characteristics of the liquid to further reduce vibration, so that the fan can still maintain good operating stability under high load conditions, significantly reducing the adverse effects of vibration on the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0029] Figure 2 2 is a front structural diagram of the stabilizing mechanism of Example 1 of the present application;

[0030] Figure 3 This is a schematic diagram of the connection structure between the spring and the stabilizing block in Example 1 of the present application;

[0031] Figure 4 This is a schematic diagram of the connection structure of the stabilizing block and the baffle in Example 2 of the present application.

[0032] Explanation of the accompanying drawings: 1. Fan housing; 2. Impeller; 3. Motor; 4. Connecting shaft; 5. Working box; 6. Stabilizing mechanism; 61. Water tank; 62. Buffer assembly; 621. Spring; 622. Stabilizing block; 623. Through hole; 624. Baffle; 625. Connecting hole; 63. Bearing seat; 7. Base; 8. Air inlet; 9. Air outlet; 10. Cover plate; 11. Working hole. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] Example 1:

[0035] Example 1 of the present application provides a centrifugal fan stabilization structure.

[0036] refer to Figure 1 and Figure 2 The centrifugal fan stabilization structure includes a fan casing 1, an impeller 2, a motor 3, a connecting shaft 4, a working box 5, a stabilizing mechanism 6, an air inlet 8, an air outlet 9, a bearing seat 63, a cover plate 10 and a base 7. One side of the fan casing 1 is connected to the air inlet 8, and one side of the fan casing 1 is connected to the air outlet 9. The fan casing 1 is fixedly connected to the base 7, and the impeller 2 is arranged in the fan casing 1. The output end of the motor 3 is connected to one end of the connecting shaft 4, and the impeller 2 is connected to the connecting shaft 4. The motor 3 drives the impeller 2 to rotate by driving the connecting shaft 4, thereby making the fan work. At the same time, in conjunction with the stabilizing mechanism 6, the vibration generated when the fan is working is further reduced by increasing the weight of the fan itself, water damping, elastic buffering and mass inertia.

[0037] Among them, the working box 5 is connected to a bearing seat 63, and a bearing is provided on the bearing seat 63. The bearing seat 63 is rotatably connected to the connecting shaft 4 through the bearing. The motor 3 and the bearing seat 63 are both fixed to the top of the working box 5, ensuring that the position of the motor 3 is stable during operation, reducing the vibration and noise caused by the displacement of the motor 3. At the same time, the bearing seat 63 is rotatably connected to the connecting shaft 4 through the bearing, which can make the connection more reliable when the motor 3 drives the connecting shaft 4 to rotate, thereby effectively reducing the vibration caused by unstable connection, and further improving the stability and service life of the overall structure.

[0038] refer to Figure 2 and Figure 3The stabilizing mechanism 6 includes a water tank 61 and a buffer assembly 62. The water tank 61 is arranged in the working box 5, the buffer assembly 62 is arranged in the water tank 61, and the cover plate 10 is arranged inside the water tank 61 and is fixedly connected to the box body through a sealing structure. When the fan vibrates during operation, the water tank 61 provides the first damping effect of the stabilizing mechanism 6. The water in the water tank 61 increases the overall mass of the centrifugal fan and reduces the fluctuations and resonance caused by high-speed rotation. Through the combination of the spring 621 and the stabilizing block 622, the vibration transmission is further reduced to ensure the working stability of the centrifugal fan.

[0039] The buffer assembly 62 includes a spring 621 and a stabilizing block 622 arranged in the water tank 61. A plurality of through holes 623 are opened on the cover plate 10. A working hole 11 for the stabilizing block 622 to pass through is also opened on the cover plate 10. The spring 621 is suspended on the inner top wall of the water tank 61. One end of the spring 621 is connected to the stabilizing block 622. The water tank 61 includes a box shell. The box shell is made of a material with certain strength and corrosion resistance and has excellent sealing properties to ensure that the internal liquid will not leak, can withstand water pressure and remain stable during operation. The water tank 61 is also provided with a water inlet and a water outlet for adding water to or draining water from the water tank 61. The water in the water tank 61 provides additional mass for absorbing vibrations, and the water flow also provides a certain amount of damping, which also helps to reduce vibrations.

[0040] Spring 621 is a spring that provides a cushioning effect. It can be made of a metal coil spring, a rubber spring, or other highly elastic material. Highly elastic materials can better absorb vibration energy. One end of spring 621 is connected to the box, and the other end is connected to the stabilizing block 622. The number of springs 621 can be one or more, depending on actual needs to achieve the optimal cushioning effect.

[0041] The stabilizing block 622 is a block-shaped object with a large mass, which can be a metal block, a concrete block or other heavy objects. The stabilizing block 622 is made of a material with a high density (such as cast iron or steel) to ensure that it does not float in the liquid. The stabilizing block 622 is in contact with the liquid in the water tank 61 and mainly utilizes the damping effect of the liquid to further absorb vibration energy.

[0042] refer to Figure 1 and Figure 3 When the motor 3 rotates, it drives the connecting shaft 4 and the impeller 2 to rotate synchronously, thus enabling the fan to operate. The vibration caused by the rotation of the impeller 2 is transmitted to the motor 3 through the connecting shaft 4. At this time, the spring 621 and the stabilizing block 622 in the stabilizing mechanism 6 synchronously absorb the vibration, thereby achieving the effect of reducing overall vibration and ensuring that the fan maintains good stability and reliability during long-term operation.

[0043] Specifically, the motor 3 is fixedly connected to the work box 5 and is securely mounted inside the work box 5 by bolts, rivets, or other fixing devices. Damping materials, such as rubber washers, are used between the motor 3 and the work box 5 to further reduce the impact of vibration generated by the motor 3 on the structure of the work box 5.

[0044] The implementation principle of this embodiment 2 is as follows: by providing a stabilizing mechanism 6, particularly the water tank 61 and the buffer assembly 62 therein, the vibrations generated during the operation of the centrifugal fan are absorbed and mitigated. The water tank 61 and the buffer assembly 62 work together to, on the one hand, utilize the damping properties of the liquid to dissipate vibration energy, and on the other hand, convert the vibration energy into heat energy for dissipation through the spring 621. This solution not only effectively absorbs and reduces the vibration amplitude of the centrifugal fan during operation, but also has strong adaptability and stability, and can adapt to the operating requirements of the centrifugal fan under different operating conditions, greatly improving the reliability and service life of the fan, and significantly improving the safety and comfort of the working environment.

[0045] Example 2

[0046] refer to Figure 4 The difference between this embodiment 2 and the above-mentioned embodiment 1 is that: the stabilizing block 622 is arranged inside the liquid, and the periphery of the stabilizing block 622 abuts against the side wall of the water tank 61. A connecting hole 625 is also opened on the stabilizing block 622, and a baffle 624 is installed on the stabilizing block 622. The baffle 624 and the stabilizing block 622 are slidably connected through a slide groove provided on the stabilizing block 622.

[0047] In this embodiment, the stabilizing block 622 is completely immersed in the liquid, with its perimeter abutting the sidewall of the water tank 61. This design concept is primarily intended to maximize the tightness of the boundary between the stabilizing block 622 and the liquid within the water tank 61, thereby increasing the frictional resistance generated by the liquid's propulsion, further enhancing the vibration absorption effect. Furthermore, the connection hole 625 provided in the stabilizing block 622 primarily addresses the pressure differential created by changes in liquid flow rate within a small area, thereby ensuring that the liquid pushes the stabilizing block 622 more steadily. This not only enhances the safety of the overall structure but also improves the stability and service life of the system.

[0048] Specifically, the design of through-holes 623 also requires consideration of their size and number to accommodate vibration absorption requirements under different centrifugal fan operating conditions. Through-holes 623 can be shaped in various ways, such as circular, elliptical, or rectangular, and can be adjusted to suit the flow properties of different liquids. The material selection of stabilizer block 622 is equally important. A high-density, corrosion-resistant, and wear-resistant alloy can be selected to extend the service life of stabilizer block 622 in liquids.

[0049] The working principle of this second embodiment is as follows: the design of the stabilizing block 622 includes a peripheral edge that abuts against the sidewall of the water tank 61, as well as connection holes 625. This effectively enhances the ability of liquid friction to absorb vibration energy. The rational arrangement of the connection holes 625 optimizes the liquid flow path, further improving the vibration absorption efficiency of the entire stabilizing mechanism 6 in the liquid. Furthermore, by selecting high-strength materials for the stabilizing block 622 and optimizing its internal structure, the overall structure is made more resilient and durable, making it suitable for more demanding working environments. This also extends the service life of the centrifugal fan to a certain extent, reducing equipment maintenance costs.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A centrifugal fan stabilizing structure, characterized in that: include: A fan housing (1), an impeller (2), a motor (3), a connecting shaft (4), a working box (5), and a stabilizing mechanism (6), wherein the impeller (2) is arranged in the fan housing (1), the output end of the motor (3) is connected to one end of the connecting shaft (4), and the impeller (2) is connected to the connecting shaft (4); The stabilizing mechanism (6) comprises a water tank (61) and a buffer assembly (62); the water tank (61) is arranged in the working box (5); and the buffer assembly (62) is arranged in the water tank (61).

2. A centrifugal fan stabilizing structure according to claim 1, characterized in that: The buffer assembly (62) comprises a spring (621) and a stabilizing block (622) disposed in the water tank (61), one end of the spring (621) being connected to the stabilizing block (622); The stabilizing block (622) is in contact with the liquid inside the water tank (61).

3. A centrifugal fan stabilizing structure according to claim 2, characterized in that: The stabilizing block (622) is arranged on the surface of the liquid.

4. A centrifugal fan stabilizing structure according to claim 2, characterized in that: The stabilizing block (622) is arranged inside the liquid.

5. A centrifugal fan stabilizing structure according to claim 4, characterized in that: The periphery of the stabilizing block (622) abuts against the side wall of the water tank (61), and a connecting hole (625) is also provided on the stabilizing block (622).

6. A centrifugal fan stabilizing structure according to claim 5, characterized in that: A baffle (624) is also provided on the stabilizing block (622).

7. The centrifugal fan stabilizing structure according to claim 1, characterized in that: The motor (3) is fixedly connected to the working box (5).

8. The centrifugal fan stabilizing structure according to claim 2, characterized in that: A cover plate (10) is further provided inside the water tank (61), and a plurality of through holes (623) are provided on the cover plate (10). The lower portion of the cover plate (10) is filled with liquid, and the upper portion of the cover plate (10) is empty. The cover plate (10) is further provided with a working hole (11) for the stabilizing block (622) to pass through.

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