CN215719591U

CN215719591U - High-efficient centrifugal fan of low noise

Info

Publication number: CN215719591U
Application number: CN202122381603.9U
Authority: CN
Inventors: 张强; 周道先; 张万毅; 张慧玲
Original assignee: Henan Dajing Fan Technology Co ltd
Current assignee: Henan Dajing Fan Technology Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-01
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a low-noise high-efficiency centrifugal fan, which comprises a base, wherein a frame is fixedly arranged at the top end of the base, a motor base is fixedly arranged on the back surface of the frame, a driving motor is fixedly arranged at the top end of the motor base, a centrifugal impeller is fixedly connected to a transmission shaft of the driving motor, buffer grooves are respectively formed in two sides of the bottom end in the frame, rubber layers are respectively fixedly arranged at the bottoms of the two buffer grooves, connecting blocks are respectively clamped and connected to the inner walls of the two buffer grooves, a fan shell is fixedly arranged at the top ends of the two connecting blocks, and a drainage component is fixedly arranged in the fan shell, and the low-noise high-efficiency centrifugal fan has the beneficial effects that: the guide plate and the plurality of curved-surface-shaped fan blades improve the flowing condition of the incoming flow gas, stabilize the flow field, effectively reduce the disturbance of the air flow in the centrifugal fan and effectively improve the work doing efficiency of the impeller; the noise of a plurality of noise reduction intracavity portion is eliminated to a plurality of respectively to a plurality of inhale cotton layer of sound and a plurality of copper guide vane, makes the noise that this centrifugal fan operation in-process spread reduce.

Description

High-efficient centrifugal fan of low noise

Technical Field

The utility model relates to a fan, in particular to a low-noise high-efficiency centrifugal fan, and belongs to the technical field of centrifugal fans.

Background

The centrifugal fan is a common device in industrial production, and is widely applied to the fields of air circulation, automobile cooling, material transportation and the like in the metallurgical mining industry, the centrifugal fan is generally driven to rotate by a motor as power during operation, the impeller compresses and accelerates air flow, so that the air flow obtains incremental pressure and speed and is discharged from a fan outlet, and a large amount of noise is easily generated due to unbalance and mutual friction of rotating parts of the fan during operation of the fan, so that the use effect of the fan is influenced, and various air flow disturbances in the existing centrifugal fan cause the reduction of the work efficiency of the impeller.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-noise high-efficiency centrifugal fan, which aims to solve the problems that the fan provided by the background technology is easy to generate a large amount of noise during operation and the working efficiency of an impeller is low.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high-efficient centrifugal fan of low noise, includes the base, the fixed frame that is equipped with in top of base, the fixed motor cabinet that is equipped with in back of frame, the fixed driving motor that is equipped with in top of motor cabinet, driving motor's transmission shaft fixedly connected with centrifugal impeller, the dashpot has all been seted up, two to the both sides of the inside bottom of frame the bottom of dashpot is all fixed and is equipped with the rubber layer, two the equal block of inner wall of dashpot is connected with the connecting block, two the fixed fan shell that is equipped with in top of connecting block, the fixed drainage subassembly that is equipped with in inside of fan shell.

As a preferred technical scheme of the present invention, the flow guide assembly includes a plurality of fan blades, two first flow guide rings, two second flow guide rings and two flow guide plates, the plurality of fan blades are all equidistantly and fixedly disposed on an inner wall of the fan casing, the two first flow guide rings are respectively and fixedly disposed at a top end of an inner front surface and a top end of an inner back surface of the fan casing, the two second flow guide rings are respectively and fixedly disposed at one side of the inner front surface and one side of the inner back surface of the fan casing, and the flow guide plates are respectively and fixedly disposed between the two first flow guide rings and between the two second flow guide rings.

According to a preferred technical scheme, noise reduction assemblies are fixedly arranged on two sides of the interior of the frame and comprise a plurality of noise reduction blocks, a plurality of noise reduction cavities, a plurality of sound absorption cotton layers and a plurality of copper guide sheets, the noise reduction blocks are fixedly arranged on two sides of the interior of the frame at equal intervals, the noise reduction cavities are formed in the middle of the noise reduction blocks, the sound absorption cotton layers are fixedly arranged on the inner walls of the noise reduction cavities, and the copper guide sheets are fixedly arranged in the middle of the interior of the noise reduction cavities.

As a preferable technical scheme of the utility model, an air outlet is fixedly arranged at the top end of one side of the fan shell, and an air inlet hopper is fixedly arranged in the middle of the front surface of the fan shell.

As a preferred technical scheme of the utility model, a plurality of fan blades are curved.

As a preferred technical scheme of the utility model, a plurality of the noise reduction blocks are made of foam metal materials.

As a preferred technical scheme of the present invention, a switch panel is fixedly disposed on one side of the frame, a driving motor switch is disposed on a surface of the switch panel, and the driving motor is electrically connected to a power supply through the driving motor switch.

Compared with the prior art, the utility model has the beneficial effects that: according to the low-noise high-efficiency centrifugal fan, when the centrifugal fan operates, the driving motor is started to drive the centrifugal impeller to rotate, external airflow enters the fan through the air inlet hopper, the flow guide plate and the plurality of curved-surface-shaped fan blades improve the flowing condition of incoming airflow, stabilize the flow field, effectively reduce airflow disturbance inside the centrifugal fan and effectively improve the work efficiency of the impeller; when the noise generated in the centrifugal fan is discharged, the noise enters the noise reduction cavities, and the noise in the noise reduction cavities is eliminated by the sound absorption cotton layers and the copper guide sheets respectively, so that the noise transmitted in the operation process of the centrifugal fan is reduced; the two connecting blocks move in the two buffer grooves respectively through the elasticity of the two rubber layers, so that the vibration amplitude generated when the centrifugal fan operates is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a second schematic cross-sectional view of the present invention;

fig. 4 is a schematic structural view of a noise reduction assembly of the present invention.

In the figure: 1. a base; 2. a frame; 3. a motor base; 4. a drive motor; 5. a centrifugal impeller; 6. a buffer tank; 7. a rubber layer; 8. connecting blocks; 9. a fan housing; 10. a drainage assembly; 101. a fan blade; 102. a first flow guide ring; 103. a second flow guide ring; 104. a baffle; 11. a noise reduction assembly; 111. a noise reduction block; 112. a noise reduction cavity; 113. a sound absorbing cotton layer; 114. a copper lead; 12. an air outlet; 13. an air inlet hopper; 14. a switch panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides a low-noise high-efficiency centrifugal fan, which comprises a base 1, wherein a frame 2 is fixedly arranged at the top end of the base 1, a motor base 3 is fixedly arranged on the back surface of the frame 2, a driving motor 4 is fixedly arranged at the top end of the motor base 3, a transmission shaft of the driving motor 4 is fixedly connected with a centrifugal impeller 5, buffer grooves 6 are respectively arranged at two sides of the bottom end inside the frame 2, rubber layers 7 are respectively fixedly arranged at the bottoms of the two buffer grooves 6, connecting blocks 8 are respectively connected with the inner walls of the two buffer grooves 6 in a clamping manner, a fan shell 9 is fixedly arranged at the top ends of the two connecting blocks 8, and a drainage assembly 10 is fixedly arranged inside the fan shell 9.

Preferably, the flow guide assembly 10 includes a plurality of fan blades 101, two first flow guide rings 102, two second flow guide rings 103 and two flow guide plates 104, the plurality of fan blades 101 are fixedly disposed on the inner wall of the fan casing 9 at equal intervals, the two first flow guide rings 102 are respectively and fixedly disposed on the top end of the inner front surface and the top end of the inner back surface of the fan casing 9, the two second flow guide rings 103 are respectively and fixedly disposed on one side of the inner front surface and one side of the inner back surface of the fan casing 9, the flow guide plates 104 are respectively and fixedly disposed between the two first flow guide rings 102 and between the two second flow guide rings 103, the wind direction inside the centrifugal fan is conveniently guided by the two flow guide plates 104 and the plurality of fan blades 101, and the working efficiency of the centrifugal fan is effectively improved; the noise reduction assembly 11 is fixedly arranged on two sides inside the frame 2, the noise reduction assembly 11 comprises a plurality of noise reduction blocks 111, a plurality of noise reduction cavities 112, a plurality of sound absorption cotton layers 113 and a plurality of copper guide sheets 114, the plurality of noise reduction blocks 111 are respectively and equidistantly fixedly arranged on two sides inside the frame 2, the noise reduction cavities 112 are formed in the middle parts of the plurality of noise reduction blocks 111, the sound absorption cotton layers 113 are fixedly arranged on the inner walls of the plurality of noise reduction cavities 112, the copper guide sheets 114 are fixedly arranged in the middle parts inside the plurality of noise reduction cavities 112, noise is uniformly dispersed through the plurality of noise reduction cavities 112, and the dispersed noise is reduced through the plurality of sound absorption cotton layers 113 and the plurality of copper guide sheets 114, so that the noise generated in the operation process of the centrifugal fan is reduced; an air outlet 12 is fixedly arranged at the top end of one side of the fan shell 9, and an air inlet hopper 13 is fixedly arranged in the middle of the front surface of the fan shell 9, so that sundries and air flow are effectively prevented from being mixed and entering the centrifugal fan; the plurality of fan blades 101 are curved, airflow flowing inside the fan is accelerated through the plurality of curved fan blades 101, and the working efficiency of the centrifugal fan is effectively improved; the noise reduction blocks 111 are made of foam metal materials, so that the sound insulation effect of the noise reduction blocks 111 is effectively improved; one side of frame 2 is fixed and is equipped with flush mounting plate of switch 14, and flush mounting plate of switch 14's surface is equipped with the driving motor switch, and driving motor 4 passes through driving motor switch and power electric connection, and the staff of being convenient for passes through this centrifugal fan operation of driving motor 4 control.

When the centrifugal fan is used, firstly, a driving motor switch on the surface of a switch panel 14 is turned on, a transmission shaft of a driving motor 4 drives a centrifugal impeller 5 to rotate, the centrifugal impeller 5 rotates to enable air flow outside the centrifugal fan to enter the inside of a fan shell 9 through an air inlet hopper 13, the air flow accelerates to an air outlet 12 through a plurality of curved blades 101 and two guide plates 104, the working efficiency of the centrifugal fan is improved, noise generated by the rotation of the centrifugal impeller 5 is dispersed inside a plurality of noise reduction cavities 112 through a plurality of noise reduction blocks 111 made of foam metal, a plurality of sound absorption cotton layers 113 and a plurality of copper guide sheets 114 respectively eliminate noise inside the plurality of noise reduction cavities 112, pneumatic noise and mechanical noise of the centrifugal fan are weakened, the centrifugal fan vibrates during the rotation process of the centrifugal impeller 5, two connecting blocks 8 are respectively movably connected inside two buffer grooves 6 through two rubber layers 7, the vibration amplitude of the centrifugal fan in the operation process is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high-efficient centrifugal fan of low noise, includes base (1), its characterized in that, the fixed frame (2) that is equipped with in top of base (1), the fixed motor cabinet (3) that is equipped with in back of frame (2), the fixed driving motor (4) that is equipped with in top of motor cabinet (3), the transmission shaft fixedly connected with centrifugal impeller (5) of driving motor (4), dashpot (6), two have all been seted up to the both sides of the inside bottom of frame (2) the bottom of dashpot (6) is all fixed and is equipped with rubber layer (7), two the equal block of inner wall of dashpot (6) is connected with connecting block (8), two the fixed fan shell (9) that is equipped with in top of connecting block (8), the inside of fan shell (9) is fixed and is equipped with drainage subassembly (10).

2. The low-noise high-efficiency centrifugal fan according to claim 1, wherein: the flow guide assembly (10) comprises a plurality of fan blades (101), two first flow guide rings (102), two second flow guide rings (103) and two flow guide plates (104), the fan blades (101) are equally spaced and fixedly arranged on the inner wall of the fan shell (9), the first flow guide rings (102) are fixedly arranged on the top of the inner front surface and the top of the inner back surface of the fan shell (9) respectively, the second flow guide rings (103) are fixedly arranged on one side of the inner front surface and one side of the inner back surface of the fan shell (9) respectively, and the flow guide plates (104) are fixedly arranged between the first flow guide rings (102) and between the two second flow guide rings (103).

3. The low-noise high-efficiency centrifugal fan according to claim 1, wherein: fixed noise reduction assembly (11) that is equipped with in both sides of frame (2) inside, noise reduction assembly (11) fall including a plurality of fall make an uproar piece (111), a plurality of fall make an uproar chamber (112), a plurality of inhale cotton layer of sound (113) and a plurality of copper guide piece (114), a plurality of fall make an uproar piece (111) equidistance respectively fixed the both sides of setting in frame (2) inside, a plurality of fall the middle part of making an uproar piece (111) and all seted up and fall chamber (112) of making an uproar, a plurality of fall the inner wall in chamber (112) of making an uproar and all fix and be equipped with and inhale cotton layer of sound (113), a plurality of fall the inside middle part in chamber (112) of making an uproar and all fix and be equipped with copper guide piece (114).

4. The low-noise high-efficiency centrifugal fan according to claim 1, wherein: an air outlet (12) is fixedly formed in the top end of one side of the fan shell (9), and an air inlet hopper (13) is fixedly arranged in the middle of the front face of the fan shell (9).

5. The low-noise high-efficiency centrifugal fan according to claim 2, wherein: the fan blades (101) are all curved.

6. A low noise high efficiency centrifugal fan according to claim 3, wherein: the noise reduction blocks (111) are all made of foam metal materials.

7. The low-noise high-efficiency centrifugal fan according to claim 1, wherein: one side of the frame (2) is fixedly provided with a switch panel (14), the surface of the switch panel (14) is provided with a driving motor switch, and the driving motor (4) is electrically connected with a power supply through the driving motor switch.