Low-noise energy-saving high-speed centrifugal fan

Abstract

The utility model provides a low-noise energy-saving high-speed centrifugal fan, and relates to the technical field of centrifugal fans, the low-noise energy-saving high-speed centrifugal fan comprises a volute, one side of the volute is provided with an operation assembly, one side of the volute is provided with an air inlet, and one end of the volute is provided with an air outlet. When the device starts to be used, the motor is started through an external power source to drive the rotating shaft to operate, the blades on the surface of the rotating disc operate, the blades operate more stably through the fixing pieces fixedly installed on the two sides of one ends of the blades, the noise reduction layer I fixedly installed in the volute is made of sound absorption cotton, and the noise reduction effect is better. The noise reduction layer II is made of a mineral wool sound absorption plate, so that the noise is secondarily absorbed, and fine dirt can enter the fan along with the air when the air enters the device through the air inlet, so that the operation of the fan is influenced; and fine dirt is blocked through a first filtering hole and a second filtering hole formed in the two sides of the filtering hopper.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a low-noise, energy-saving and high-speed centrifugal fan. Background Art

[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 ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draft of boilers and industrial furnaces.

[0003] In the prior art, energy-saving high-speed centrifugal fans generate a lot of noise during operation, and the noise will be transmitted to the volute, where the noise will be amplified. In addition, when the energy-saving high-speed centrifugal fan is running, air enters the device through the air inlet, and fine dirt will enter the interior of the energy-saving high-speed centrifugal fan, affecting the operation of the energy-saving high-speed centrifugal fan.

[0004] Therefore, a low-noise, energy-saving, high-speed centrifugal fan is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low-noise, energy-saving and high-speed centrifugal fan, comprising: a volute, a running component is arranged on one side of the volute, an air inlet is opened on one side of the volute, an air outlet is opened at one end of the volute, an air outlet filter is fixedly installed on the surface of the air outlet, a noise reduction layer 1 is fixedly installed on the inner wall of the volute, and a noise reduction layer 2 is fixedly installed on the other side of the noise reduction layer 1.

[0007] As a preferred embodiment, the operating component includes a motor, one side of the motor is fixedly installed on one side of the volute, the output end of the motor passes through the surface of one side of the volute and is fixedly installed with a rotating shaft, the other end of the rotating shaft is connected to the other side of the inner wall of the volute through a bearing, the surface of the rotating shaft is fixedly sleeved with a rotating disk, the surface of the rotating disk is fixedly installed with a plurality of fixed blocks, one end of the plurality of fixed blocks is fixedly installed with blades, and both sides of the other end of the plurality of blades are fixedly installed with fixing plates.

[0008] As a preferred implementation, the material of the noise reduction layer 1 is sound-absorbing cotton.

[0009] As a preferred implementation, the material of the second noise reduction layer is a mineral wool sound-absorbing board.

[0010] As a preferred embodiment, a filter bucket is threadedly embedded in the inner wall of the air inlet, a handle is fixedly installed on one side of the filter bucket, a plurality of filter holes 1 are opened on one side of the filter bucket, and a plurality of filter holes 2 are opened on the other side of the filter bucket.

[0011] As a preferred embodiment, a fixing frame is fixedly mounted on the surface of the bottom of the volute, and a base is fixedly mounted on the bottom of the fixing frame.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, when the device starts to be used, the motor is started by an external power supply to drive the rotating shaft to rotate, so that the rotating disk fixed on the surface follows the rotation, and drives multiple blades to rotate. According to the fixed plates fixedly installed on both sides of one end of the multiple blades, the blades can reduce shaking and become more stable during operation through the fixed plates. The noise reduction layer fixedly installed on the inner wall of the volute is made of sound-absorbing cotton, also known as sound-absorbing cotton, which is a roll / sheet material made of a single or multiple different fibers through multiple processes. Polyester sound-absorbing cotton is one of them. It has good sound absorption. 100% polyester fiber is hot-pressed with high technology and is composed of cocoon cotton. The sound absorption coefficient reaches 0.94 in the noise range of 125-4000HZ, so that the noise generated by the device during operation is initially absorbed. According to the second material of the noise reduction layer, mineral wool sound-absorbing cotton is made of granular cotton as the main raw material, mixed with other additives, and cut after high-pressure steam extrusion. It is fireproof and sound-absorbing, does not contain asbestos and therefore will not produce needle-shaped dust. Adding moisture-proof agent inside the mineral wool board can both enhance the resistance of the surface fibers and have a good sound-absorbing effect. As a result, the device can initially absorb and reduce noise through the noise reduction layer 1 during use, and continue to absorb and reduce noise through the noise reduction layer 2, which greatly reduces the impact of noise and makes the device more perfect.

[0014] 2. In the utility model, when the device is working, gas enters into the interior of the device through the air inlet. When the gas enters into the interior of the device through the air inlet, it will bring fine dirt into the interior of the device and affect the operation of the device. A filter bucket is embedded according to the inner wall thread of the air inlet. The fine dirt is blocked by the filter hole 1 and the filter hole 2 opened on both sides of the filter bucket. The filter bucket can be taken out of the air inlet for processing by rotating the filter bucket with a handle, so that the device can block the entry of dirt during operation, so that the device can operate better, have a longer service life, and make the device more perfect. The fixing frame fixedly installed at the bottom of the volute and the base fixedly installed at the bottom of the fixing frame enable the device to be better placed on a plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A front view of a low-noise, energy-saving, high-speed centrifugal fan provided by the utility model;

[0016] Figure 2 A side view of a low-noise, energy-saving, high-speed centrifugal fan provided by the utility model;

[0017] Figure 3 A side view of a running component of a low-noise, energy-saving, high-speed centrifugal fan provided by the utility model;

[0018] Figure 4 A side view of a blade of a low-noise, energy-saving, high-speed centrifugal fan provided by the utility model;

[0019] Figure 5 A volute cutting diagram of a low-noise, energy-saving, high-speed centrifugal fan provided by the utility model;

[0020] Figure 6 A direct view of a filter bucket of a low-noise, energy-saving, high-speed centrifugal fan provided by the utility model;

[0021] Figure 7 The utility model provides a side view of a filter bucket of a low-noise, energy-saving, high-speed centrifugal fan.

[0022] Legend:

[0023] 1. Volute; 2. Operating assembly; 201. Motor; 202. Rotating shaft; 203. Rotating disk; 3. Fixed frame; 4. Base; 5. Air inlet; 6. Filter hopper; 7. Fixed block; 8. Blades; 9. Fixed sheet; 10. Noise reduction layer 1; 11. Air outlet; 12. Air outlet filter; 13. Noise reduction layer 2; 14. Handle; 15. Filter hole 1; 16. Filter hole 2. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7 The utility model provides a technical solution: a low-noise, energy-saving, high-speed centrifugal fan, comprising: a volute 1, a running component 2 is arranged on one side of the volute 1, an air inlet 5 is opened on one side of the volute 1, an air outlet 11 is opened at one end of the volute 1, an air outlet filter 12 is fixedly installed on the surface of the air outlet 11, a noise reduction layer 10 is fixedly installed on the inner wall of the volute 1, and a noise reduction layer 2 13 is fixedly installed on the other side of the noise reduction layer 10.

[0026] Specifically: when the device starts to be used, the operating component 2 is used to make the device operate better, the gas enters the device through the air inlet 5, and the gas is discharged from the device through the air outlet 11, and the noise reduction layer 10 and the noise reduction layer 2 11 are used to absorb and reduce noise.

[0027] In one embodiment, the operating component 2 includes a motor 201, one side of the motor 201 is fixedly installed on one side of the volute 1, the output end of the motor 201 passes through the surface of one side of the volute 1 and is fixedly installed with a rotating shaft 202, the other end of the rotating shaft 202 is connected to the other side of the inner wall of the volute 1 through a bearing, and a rotating disk 203 is fixedly sleeved on the surface of the rotating shaft 202, and a plurality of fixed blocks 7 are fixedly installed on the surface of the rotating disk 203, a blade 8 is fixedly installed on one end of the plurality of fixed blocks 7, and a fixing plate 9 is fixedly installed on both sides of the other end of the plurality of blades 8.

[0028] Specifically: when the device starts to be used, the motor 201 is started by an external power supply, which drives the rotating shaft 202 to rotate, so that the rotating disk 203 fixedly mounted on the surface of the rotating shaft 202 follows the rotation, and the multiple blades 8 installed on the surface of the rotating disk 203 rotate, so that the gas moves inside the device, and the air enters through the air inlet 5 and is discharged through the air outlet 11. The multiple blades 8 are stabilized by the fixing plates 9 fixedly installed on both sides of one end of the multiple blades 8, so that the blades 8 reduce shaking when running, and the movement trajectory of the wind generated by the blades 8 is limited and directed by the fixing plates 9, so that a certain energy-saving effect is achieved when the device is running.

[0029] In one embodiment, the material of the noise reduction layer 10 is sound-absorbing cotton.

[0030] Specifically: During the operation of the device, noise will be generated due to the friction inside the device. A noise reduction layer 10 is fixedly installed on the inner wall of the volute 1. The material of the layer is sound-absorbing cotton, which is also called sound-absorbing cotton. It is a roll / sheet material made of a single or multiple different fibers through multiple processes. The most widely used is two-component sound-absorbing cotton, and polyester sound-absorbing cotton is one of them. It has good sound absorption. 100% polyester fiber is hot-pressed with high technology and is in the shape of cocoon cotton. The sound absorption coefficient reaches 0.94 within the noise range of 125-4000HZ, so that the noise generated by the device during operation can be initially absorbed to reduce the impact of noise on the device.

[0031] In one embodiment, the material of the second noise reduction layer 13 is a mineral wool sound absorbing board.

[0032] Specifically: after the noise reduction layer 10 is used for preliminary sound absorption and noise reduction, the noise reduction layer 2 13 fixedly installed on one side of the noise reduction layer 10 is used for sound absorption and noise reduction. The material of the noise reduction layer 2 13 is mineral wool sound-absorbing cotton, which is made of granular cotton as the main raw material, mixed with other additives, and cut after high-pressure steam extrusion. It is fireproof and sound-absorbing, does not contain asbestos, so there will be no needle-shaped dust. Adding moisture-proof agent inside the mineral wool board can enhance the resistance of the surface fiber and have a good sound absorption effect, so that the device can be used in the process of using the noise reduction layer 10 for preliminary sound absorption and noise reduction, and the noise reduction layer 2 13 is used for continuous sound absorption and noise reduction, so that the noise generated by the operation of the device is reduced, making the device more perfect.

[0033] In one embodiment, a filter bucket 6 is threadedly embedded in the inner wall of the air inlet 5, a handle 14 is fixedly installed on one side of the filter bucket 6, a plurality of filter holes 15 are opened on one side of the filter bucket 6, and a plurality of filter holes 2 16 are opened on the other side of the filter bucket 6.

[0034] Specifically: when the device is working, air enters the device through the air inlet 5. When air enters the device, fine dirt will enter the device and affect the operation of the device. A filter bucket 6 is embedded according to the inner wall thread of the air inlet 5. The fine dirt is blocked by the filter hole 15 and the filter hole 2 16 opened on both sides of the filter bucket 6. The filter bucket 6 can be taken out of the air inlet 5 by rotating the filter bucket 6 by the handle 14, so that the device can prevent dirt from entering the device during operation, making the device more perfect and the device running more smoothly.

[0035] In one embodiment, a fixing frame 3 is fixedly mounted on the surface of the bottom of the volute 1 , and a base 4 is fixedly mounted on the bottom of the fixing frame 3 .

[0036] Specifically: the volute 1 is stably mounted on the top of the fixing frame 3 through the fixing frame 3 fixedly mounted on the bottom surface of the volute 1, and the base 4 fixedly mounted on the bottom of the fixing frame 3 enables the device to be better placed on a flat ground.

[0037] Working principle: When the device starts to be used, the motor 201 is started by an external power supply to drive the rotating shaft 202 to operate, so that the rotating disk 203 fixed on its surface follows the operation, and drives multiple blades 8 to operate. According to the fixed plates 9 fixedly installed on both sides of one end of the multiple blades 8, the blades 8 can reduce shaking and become more stable through the fixed plates 9 during operation. The noise reduction layer 10 fixedly installed on the inner wall of the volute 1 is made of sound-absorbing cotton, also known as sound-absorbing cotton, which is a roll / sheet material made of a single or multiple different fibers through a variety of processes. Polyester sound-absorbing cotton is one of them. It has good sound absorption. 100% polyester fiber is hot-pressed with high technology and is composed of cocoon cotton. The sound absorption coefficient reaches 0.94 in the noise range of 125-4000HZ, so that the noise generated by the device during operation is initially absorbed. According to the noise reduction layer 2 13, the material is mineral wool sound-absorbing cotton. This material uses granular cotton as the main raw material, mixed with other additives, and then cut after high-pressure steam extrusion. It is fireproof and sound-absorbing, does not contain asbestos, so needle-shaped dust will not appear. Adding moisture-proof agent inside the mineral wool board can enhance the resistance of the surface fiber and has a good sound-absorbing effect, so that the device can initially absorb and reduce noise through the noise reduction layer 10 during use, and continue to absorb and reduce noise through the noise reduction layer 2 13, greatly reducing the impact of noise and making the device more perfect; when the device is working, the gas enters the interior of the device through the air inlet 5. When the gas enters the interior of the device through the air inlet 5, it will bring fine dirt into the interior of the device and affect the operation of the device. A filter bucket 6 is embedded according to the inner wall thread of the air inlet 5, and the fine dirt is blocked by the filter hole 15 and the filter hole 2 16 opened on both sides of the filter bucket 6. The filter bucket 6 is rotated by the handle 14 so that the filter bucket 6 can be taken out from the air inlet 5 for processing, so that the device can block the entry of dirt during operation, so that the device can operate better and have a longer service life, making the device more perfect. The fixing frame 3 fixedly installed at the bottom of the volute 1 and the base 4 fixedly installed at the bottom of the fixing frame 3 enable the device to be better placed on a plane.

[0038] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A low-noise, energy-saving, high-speed centrifugal fan, characterized in that: include: A volute (1), wherein a running assembly (2) is arranged on one side of the volute (1), an air inlet (5) is provided on one side of the volute (1), an air outlet (11) is provided at one end of the volute (1), an air outlet filter (12) is fixedly mounted on the surface of the air outlet (11), a noise reduction layer 1 (10) is fixedly mounted on the inner wall of the volute (1), and a noise reduction layer 2 (13) is fixedly mounted on the other side of the noise reduction layer 1 (10).

2. A low-noise, energy-saving, high-speed centrifugal fan according to claim 1, characterized in that: The operating assembly (2) comprises a motor (201), one side of the motor (201) is fixedly mounted on one side of the volute (1), the output end of the motor (201) penetrates through the surface of one side of the volute (1) and is fixedly mounted with a rotating shaft (202), the other end of the rotating shaft (202) is connected to the other side of the inner wall of the volute (1) via a bearing, a rotating disk (203) is fixedly sleeved on the surface of the rotating shaft (202), a plurality of fixed blocks (7) are fixedly mounted on the surface of the rotating disk (203), a blade (8) is fixedly mounted on one end of the plurality of fixed blocks (7), and a fixing plate (9) is fixedly mounted on both sides of the other end of the plurality of blades (8).

3. A low-noise, energy-saving, high-speed centrifugal fan according to claim 2, characterized in that: The material of the noise reduction layer 1 (10) is sound-absorbing cotton.

4. A low-noise, energy-saving, high-speed centrifugal fan according to claim 1, characterized in that: The material of the second noise reduction layer (13) is a mineral wool sound absorbing board.

5. A low-noise, energy-saving, high-speed centrifugal fan according to claim 1, characterized in that: A filter bucket (6) is threadedly embedded in the inner wall of the air inlet (5), a handle (14) is fixedly mounted on one side of the filter bucket (6), a plurality of filter holes (15) are provided on one side of the filter bucket (6), and a plurality of filter holes (16) are provided on the other side of the filter bucket (6).

6. A low-noise, energy-saving, high-speed centrifugal fan according to claim 1, characterized in that: A fixing frame (3) is fixedly mounted on the surface of the bottom of the volute (1), and a base (4) is fixedly mounted on the bottom of the fixing frame (3).

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