Low-noise efficient centrifugal fan impeller structure

Abstract

The utility model provides a low-noise high-efficiency centrifugal fan impeller structure. The low-noise and high-efficiency centrifugal fan impeller structure comprises a base and an impeller, the fixing opening is formed in the outer surface of the base, a plurality of mounting openings are formed in the top of the base, a plurality of first blades are mounted at the top of the base through mounting buckles, a plurality of second blades are mounted at the top of the base through mounting buckles, a through hole is formed in the top of the base, and a through hole is formed in the top of the base. A plurality of clamping grooves are formed in the inner surface of the through hole; and the fixing assembly is installed in the fixing opening, and the fixing assembly comprises two arc-shaped fixing rings and an installation bolt. According to the low-noise high-efficiency centrifugal fan impeller structure, through the design, the stability and efficiency of conveying pressure are maintained on the premise that noise is reduced through cooperation of the first blade and the second blade, and meanwhile the cost of later maintenance of the impeller is reduced through the first blade and the second blade which are detachable.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan impeller technology, and in particular to a low-noise, high-efficiency centrifugal fan impeller structure. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas. They are a type of driven fluid machinery. Centrifugal fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling; boilers and industrial furnaces for ventilation and induced draft; and air conditioning equipment and household appliances for cooling and ventilation.

[0003] The main functions of a centrifugal fan impeller include generating air pressure and transmitting energy. The impeller is the core component of a centrifugal fan. It generates centrifugal force through rotation, enabling the gas to gain kinetic and pressure energy. Specifically, when the motor is powered on, the impeller rotates at high speed. The blades on the impeller do work on the gas, giving it velocity and pressure energy. Under the action of the impeller, the gas is thrown to the edge, forming high-pressure gas. At the same time, a low-pressure area is formed in the center of the impeller, attracting external gas to replenish it, thereby realizing continuous gas delivery and pressurization.

[0004] Existing centrifugal fan impellers are generally composed of a single set of blades, and the impeller blades are welded to the base. This results in high noise and low efficiency during use. If a single blade is damaged, the entire impeller needs to be replaced, increasing the later maintenance costs.

[0005] Therefore, it is necessary to provide a low-noise, high-efficiency centrifugal fan impeller structure to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a low-noise, high-efficiency centrifugal fan impeller structure, which solves the problems of high noise and low efficiency in the use of impellers composed of a single set of blades, and the need to replace the entire impeller when a single blade is damaged due to welding the blades and the impeller base together, which increases the later maintenance costs.

[0007] To solve the above-mentioned technical problems, the low-noise, high-efficiency centrifugal fan impeller structure provided by this utility model includes: a base;

[0008] The base has a fixing port on its outer surface and multiple mounting ports on its top. Multiple first blades are mounted on the top of the base via mounting buckles, and multiple second blades are mounted on the top of the base via mounting buckles. The top of the base has a through hole, and multiple slots are formed on the inner surface of the through hole.

[0009] A fixing component is installed inside a fixing opening. The fixing component includes two arc-shaped fixing rings and a mounting bolt, which is used to fix the two arc-shaped fixing rings in the fixing opening.

[0010] The first and second blades are installed alternately. The mounting buckle is inserted into the inside of the mounting buckle from the fixing port. The inner wall of the fixing port has a hole for threaded connection with the mounting bolt.

[0011] Preferably, a rotating shaft is installed inside the perforation, and multiple retaining strips are fixedly connected to the outer surface of the rotating shaft;

[0012] Once the clip is inserted into the slot, the shaft and base can be installed.

[0013] Preferably, a connecting buckle is fixedly connected to the bottom end of the rotating shaft, and a fixing bolt is installed on the outer surface of the connecting buckle;

[0014] The connector is used to connect to the output of the drive device.

[0015] Preferably, a mounting plate is mounted on the outer surface of the rotating shaft, and multiple locking blocks are fixedly connected to the outer surface of the mounting plate.

[0016] Preferably, a cutting assembly is fixedly connected to the top end of the rotating shaft, the cutting assembly being used to cut the incoming fluid;

[0017] The cutting component cuts through the flow of the centrifugal fan, reducing the impact of the fluid on the blades.

[0018] Preferably, the cutting assembly includes a rotating rod and a spiral cutting component, wherein the rotating rod is used to fix the spiral cutting component;

[0019] The spiral cutting component rotates synchronously with the base, which can cut the fluid and reduce the impact force.

[0020] Compared with related technologies, the low-noise, high-efficiency centrifugal fan impeller structure provided by this utility model has the following beneficial effects:

[0021] This invention provides a low-noise, high-efficiency centrifugal fan impeller structure. To reduce the noise of the centrifugal fan impeller during operation and the subsequent maintenance costs, a fixing port is opened on the outer surface of the impeller base. Simultaneously, multiple openings communicating with the fixing port and used for installing mounting clips are opened on the top of the base. Multiple first blades with mounting clips are then installed on the top of the base, and multiple second blades are also installed on the top of the base using mounting clips. The first and second blades are installed alternately. The outlet angle β2 of the first blade is less than 90°, and the airflow is discharged along the tangential direction of the blade, resulting in high efficiency and low noise. Meanwhile, the outlet angle β2 of the second blade is greater than 90°, and the airflow is forced to accelerate in the impeller rotation direction, generating a higher pressure head and improving conveying efficiency. After the fixing components are installed in the fixing port, the mounting clips can be secured in the fixing port on the top of the base. If a first or second blade is damaged, a single blade can be replaced as needed, reducing subsequent maintenance costs. This design utilizes the cooperation of the first and second blades to maintain stable conveying pressure and efficiency while reducing noise. Furthermore, the use of detachable first and second blades further reduces the cost of subsequent impeller maintenance. Attached Figure Description

[0022] Figure 1 A schematic diagram of a preferred embodiment of the low-noise, high-efficiency centrifugal fan impeller structure provided by this utility model;

[0023] Figure 2 A schematic diagram of the installation disk is provided for this utility model;

[0024] Figure 3 A schematic diagram of the arc-shaped fixing ring is provided for this utility model;

[0025] Figure 4 Provided for this utility model Figure 3 An enlarged view of point A shown;

[0026] Figure 5 A structural schematic diagram of the mounting buckle is provided for this utility model.

[0027] The following are the labels in the diagram: 1. Base, 2. First blade, 3. Second blade, 4. Cutting assembly, 401. Rotating rod, 402. Spiral cutting component, 5. Mounting plate, 6. Connecting buckle, 7. Fixing bolt, 8. Rotating shaft, 9. Fixing assembly, 901. Arc-shaped fixing ring, 902. Mounting bolt, 10. Clamping block, 11. Clamping strip, 12. Clamping groove, 13. Through hole, 14. Mounting port, 15. Fixing port, 16. Mounting buckle. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the low-noise, high-efficiency centrifugal fan impeller structure provided by this utility model; Figure 2 A schematic diagram of the installation disk is provided for this utility model; Figure 3 A schematic diagram of the arc-shaped fixing ring is provided for this utility model; Figure 4 Provided for this utility model Figure 3 An enlarged view of point A shown; Figure 5 This utility model provides a structural schematic diagram of the mounting clip. The low-noise, high-efficiency centrifugal fan impeller structure includes: a base 1;

[0030] A fixing port 15 is provided on the outer surface of the base 1. The top of the base 1 is provided with multiple mounting ports 14. Multiple first blades 2 are mounted on the top of the base 1 through mounting buckles 16. Multiple second blades 3 are mounted on the top of the base 1 through mounting buckles 16. The top of the base 1 is provided with a through hole 13. Multiple slots 12 are provided on the inner surface of the through hole 13.

[0031] The fixing component 9 is installed inside the fixing port 15. The fixing component 9 includes two arc-shaped fixing rings 901 and a mounting bolt 902. The mounting bolt 902 is used to fix the two arc-shaped fixing rings 901 in the fixing port 15.

[0032] The first blade 2 and the second blade 3 are installed alternately. The mounting buckle 16 is inserted into the interior of the mounting buckle 16 from the fixing port 15. The inner wall of the fixing port 15 has a hole for threaded connection with the mounting bolt 902. Two arc-shaped fixing rings 901 form a ring for locking the mounting buckle 16 inside the fixing port 15.

[0033] A rotating shaft 8 is installed inside the perforation 13, and multiple retaining strips 11 are fixedly connected to the outer surface of the rotating shaft 8.

[0034] Once the clip 11 is inserted into the slot 12, the rotating shaft 8 and the base 1 can be installed.

[0035] The bottom end of the rotating shaft 8 is fixedly connected to a connecting buckle 6, and a fixing bolt 7 is installed on the outer surface of the connecting buckle 6;

[0036] The connecting buckle 6 is used to connect to the output end of the drive device and is fixed in place by the fixing bolt 7.

[0037] The outer surface of the rotating shaft 8 is equipped with a mounting plate 5, and a plurality of locking blocks 10 are fixedly connected to the outer surface of the mounting plate 5;

[0038] The base 1 has an opening at the bottom that can match the mounting plate 5 and the card block 10.

[0039] A cutting component 4 is fixedly connected to the top end of the rotating shaft 8. The cutting component 4 is used to cut the incoming fluid.

[0040] Cutting component 4 cuts the fluid entering the centrifugal fan, reducing the impact of the fluid on the blades.

[0041] The cutting assembly 4 includes a rotating rod 401 and a spiral cutting component 402, wherein the rotating rod 401 is used to fix the spiral cutting component 402.

[0042] The spiral cutting component 402 rotates synchronously with the base 1, which can cut the fluid and reduce the impact force. The spiral cutting component 402 is spirally distributed on the outer surface of the rotating rod 401.

[0043] The working principle of the low-noise, high-efficiency centrifugal fan impeller structure provided by this utility model is as follows:

[0044] A fixing port 15 is opened on the outer surface of the impeller base 1. At the same time, multiple openings communicating with the fixing port 15 and used for installing mounting buckles 16 are opened on the top of the base 1. Then, multiple first blades 2 with mounting buckles 16 are installed on the top of the base 1. At the same time, multiple second blades 3 are also installed on the top of the base 1 through mounting buckles 16. The first blades 2 and second blades 3 are installed alternately. The outlet angle β2 of the first blade 2 is less than 90°, and the airflow is discharged along the tangential direction of the blade, which has high efficiency and low noise. At the same time, the outlet angle β2 of the second blade is greater than 90°, and the airflow is forced to accelerate in the direction of impeller rotation, which can generate a higher pressure head and improve the conveying efficiency. After the fixing component 9 is installed in the fixing port 15, the mounting buckle 16 can be locked in the fixing port 15 on the top of the base 1. If the first blade 2 or the second blade 3 is damaged, a single blade can be replaced as needed, reducing the later maintenance cost.

[0045] Compared with related technologies, the low-noise, high-efficiency centrifugal fan impeller structure provided by this utility model has the following beneficial effects:

[0046] To reduce noise during centrifugal fan impeller operation and subsequent impeller maintenance costs, a fixing port 15 is opened on the outer surface of the impeller base 1. Simultaneously, multiple openings communicating with the fixing port 15 and used for installing mounting clips 16 are opened on the top of the base 1. Then, multiple first blades 2 with mounting clips 16 are installed above the base 1, and multiple second blades 3 are also installed above the base 1 using the mounting clips 16. The first blades 2 and second blades 3 are installed alternately, with the outlet angle β2 of the first blades 2 < 90°. Airflow is discharged along the tangential direction of the blades, resulting in high efficiency and low noise. The outlet angle β2 of the second blade is greater than 90°, and the airflow is forced to accelerate in the direction of impeller rotation, which can generate a higher pressure head and improve the conveying efficiency. After the fixing component 9 is installed in the fixing port 15, the mounting buckle 16 can be locked in the fixing port 15 on the top of the base 1. If the first blade 2 or the second blade 3 is damaged, a single blade can be replaced as needed, reducing the later maintenance cost. This design uses the cooperation of the first blade 2 and the second blade 3 to maintain the stability and efficiency of the conveying pressure while reducing noise. At the same time, the use of detachable first blade 2 and second blade 3 reduces the later maintenance cost of the impeller.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-noise, high-efficiency centrifugal fan impeller structure, characterized in that, include: Base; The base has a fixing port on its outer surface and multiple mounting ports on its top. Multiple first blades are mounted on the top of the base via mounting buckles, and multiple second blades are mounted on the top of the base via mounting buckles. The top of the base has a through hole, and multiple slots are formed on the inner surface of the through hole. A fixing component is installed inside a fixing opening. The fixing component includes two arc-shaped fixing rings and a mounting bolt, which is used to fix the two arc-shaped fixing rings in the fixing opening.

2. The low-noise, high-efficiency centrifugal fan impeller structure according to claim 1, characterized in that, A rotating shaft is installed inside the perforation, and multiple retaining strips are fixedly connected to the outer surface of the rotating shaft.

3. The low-noise, high-efficiency centrifugal fan impeller structure according to claim 2, characterized in that, A connecting buckle is fixedly connected to the bottom end of the rotating shaft, and a fixing bolt is installed on the outer surface of the connecting buckle.

4. The low-noise, high-efficiency centrifugal fan impeller structure according to claim 2, characterized in that, The outer surface of the rotating shaft is fitted with a mounting plate, and multiple locking blocks are fixedly connected to the outer surface of the mounting plate.

5. The low-noise, high-efficiency centrifugal fan impeller structure according to claim 2, characterized in that, A cutting assembly is fixedly connected to the top of the rotating shaft, and the cutting assembly is used to cut the incoming fluid.

6. The low-noise, high-efficiency centrifugal fan impeller structure according to claim 5, characterized in that, The cutting assembly includes a rotating rod and a spiral cutting component, the rotating rod being used to fix the spiral cutting component.

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