CN219035073U

CN219035073U - Low-noise fan

Info

Publication number: CN219035073U
Application number: CN202320039845.6U
Authority: CN
Inventors: 吕为; 张文俊
Original assignee: Hengchi Environmental Protection Equipment Nanjing Co ltd
Current assignee: Hengchi Environmental Protection Equipment Nanjing Co ltd
Priority date: 2023-01-08
Filing date: 2023-01-08
Publication date: 2023-05-16
Anticipated expiration: 2033-01-08

Abstract

The utility model discloses a low-noise fan, relates to the technical field of fans, and aims to solve the problems that in the prior art, noise is generated when a motor runs in the working process of the fan, friction is generated between a blade and air when the blade rotates, the faster the rotating speed is, the sharper the noise is, and the working noise of the fan is large. The fan comprises a fan shell, and is characterized in that side plates are symmetrically and fixedly installed on two sides of the fan shell respectively, mounting holes are formed in the side plates, a sound absorbing annular cavity is formed in the fan shell, sound absorbing cotton is arranged in the sound absorbing annular cavity, a sound absorbing plate is symmetrically and fixedly installed on the opening of two sides of the inside of the fan shell respectively, the sound absorbing plate is arranged into a ring shape, a protective screen is fixedly installed on the inside of the sound absorbing plate, a fixing plate is fixedly installed on the lower portion of the fan shell, a damping plate is fixedly installed on the lower portion of the fixing plate, a sleeve frame is arranged on the outer side of the damping plate, and a fixing bottom plate is fixedly installed on the lower portion of the sleeve frame.

Description

Low-noise fan

Technical Field

The utility model relates to the technical field of fans, in particular to a low-noise fan.

Background

The fan is a machine for converting rotary mechanical energy into gas pressure energy and kinetic energy and conveying the gas out, is a habit of China for the gas compression and gas conveying machine, and generally comprises a ventilator, a blower and a wind driven generator;

for example, patent publication CN 112855617B (a fan): the air conditioner comprises a fan shell and a fan body arranged in the fan shell, and is characterized in that the fan shell comprises an inner frame body and an outer frame body, and the fan body is arranged on the inner frame body; a plurality of mounting assemblies are arranged on the outer frame body; the installation assembly comprises a cylinder body, a combustion chamber is arranged in the cylinder body, combustible materials which burn to generate a large amount of gas are arranged in the combustion chamber, a first cylindrical connecting piece is arranged at one end, close to the outer frame body, in the cylinder body, a sealing space is formed between the first cylindrical connecting piece and the combustion chamber, the combustible materials burn, and the first cylindrical connecting piece can penetrate through the outer frame body to extend into a wall body under the action of the gas;

the fan is convenient to install in the prior art, but does not have silencing capability, noise is generated when the motor runs in the working process of the fan, friction is generated between the motor and air when the blades rotate, the faster the rotating speed is, the sharper the noise is, and the larger the working noise of the fan is; therefore, the market is urgently required to develop a low-noise fan to help people solve the existing problems.

Disclosure of Invention

The utility model aims to provide a low-noise fan, which is used for solving the problems that in the prior art, the operation of a motor generates noise in the working process of the fan, and when a blade rotates, friction is generated with air, the faster the rotating speed is, the sharper the noise is, and the larger the working noise of the fan is caused.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fan of low noise, includes the fan shell, the both sides of fan shell symmetry respectively fixed mounting have the sideboard, the inside of sideboard is provided with the mounting hole, the inside of fan shell is provided with inhales sound ring chamber, inhale the inside of sound ring chamber and be provided with and inhale the sound cotton, the opening part of the inside both sides of fan shell symmetry respectively fixed mounting has the acoustical panel, and the acoustical panel sets up to annular, the inside fixed mounting of acoustical panel has the protection otter board.

Preferably, the fixed plate is fixedly arranged below the fan shell, the shock absorbing plate is fixedly arranged below the fixed plate, the sleeve frame is arranged on the outer side of the shock absorbing plate, and the fixed bottom plate is fixedly arranged below the sleeve frame.

Preferably, the inside of cover frame is provided with compression spring along the below of bradyseism board, and compression spring and bradyseism board welded connection, one side of compression spring is provided with the attenuator, and attenuator and bradyseism board pass through bolt fixed connection.

Preferably, the inside of cover frame is provided with the restriction recess along the both sides of bradyseism board respectively symmetry, the inside of restriction recess is provided with the restriction board, and restriction board and bradyseism board pass through bolt fixed connection, the inside of restriction recess is provided with the rubber pad, and rubber pad and cover frame bonding connection.

Preferably, a guide ring plate is fixedly arranged on one side of the silencer plate, and a conical hole is formed in the guide ring plate.

Preferably, the inside of fan shell is provided with the motor, the blade is installed to one side of motor, and the output and the blade fixed connection of motor, the both sides of motor top and below all fixed mounting have the dead lever, and dead lever and fan shell pass through bolt fixed connection.

Compared with the prior art, the utility model has the beneficial effects that:

1. the noise absorbing cotton is arranged in the fan shell, so that noise generated by friction with air during motor operation and blade rotation can be absorbed, the noise is prevented from being transmitted outwards, meanwhile, the noise absorbing boards are arranged at openings at two ends of the fan, the noise can be prevented from being transmitted to pipelines connected with the fans at two sides, the noise absorbing capacity is improved, the low noise capacity of the fan operation is improved, and tearing noise caused by rough and uneven joints at the inner surfaces of the pipelines connected with the two sides of the fan can be absorbed and reduced by arranging the noise absorbing boards at the openings at two ends of the fan, so that the noise reducing capacity is further improved, and the low noise operation capacity of the fan is improved.

2. According to the utility model, through the arrangement of the fixing plate, the damping plate and the sleeve frame, the compression spring and the damper are arranged below the damping plate, vibration generated during operation of the fan can be buffered through the elastic action of the compression spring, the stable operation of the fan is facilitated, and the damper can provide resistance, so that rebound acting force generated by absorbing energy in the damping process of the compression spring is reduced, the compression spring can be stably lowered, the stability of damping of the fan is improved, and the stability of operation of the fan is increased.

Drawings

FIG. 1 is a schematic diagram of a low noise fan of the present utility model;

FIG. 2 is a cross-sectional view of a low noise blower of the present utility model;

FIG. 3 is an enlarged schematic view of the portion A of the present utility model;

fig. 4 is an enlarged schematic view of the B site of the present utility model.

In the figure: 1. a blower housing; 2. a side plate; 3. a fixing plate; 4. a shock absorbing plate; 5. a sleeve frame; 6. a fixed bottom plate; 7. a motor; 8. a blade; 9. a fixed rod; 10. sound absorbing cotton; 11. a protective screen; 12. a muffler plate; 13. a compression spring; 14. a damper; 15. a limiting groove; 16. a limiting plate; 17. a rubber pad; 18. a deflector ring plate; 19. tapered holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides a fan of low noise, including fan housing 1, the both sides of fan housing 1 are symmetrical fixed mounting respectively has side board 2, the inside of side board 2 is provided with the mounting hole, the fan of being convenient for is connected with the pipeline of conveying air, the inside of fan housing 1 is provided with inhales sound ring chamber, inhale the inside of sound ring chamber and be provided with and inhale sound cotton 10, the opening part of the inside both sides of fan housing 1 is symmetrical fixed mounting respectively has acoustical panel 12, and acoustical panel 12 sets up to the annular, acoustical panel 12's inside fixed mounting has protective screen 11, can prevent debris entering fan in, fan operation's stability has been improved.

During the use, through inhale the effect of inhaling cotton 10, can absorb the noise that motor operation and blade produced with the air friction when rotatory, prevent the outside transmission of noise, through the effect of acoustical panel 12, can prevent the pipeline transmission that the noise was connected to both sides fan, the operation of motor can produce the noise in fan course of working has been solved, and can produce friction with the air when the blade is rotatory, the rotational speed is faster, the noise is sharper, lead to the very big problem of fan operational noise, the low noise ability of fan operation has been increased, and through setting up acoustical panel 12 at the both ends opening part of fan, can absorb the tearing sound that reduces the pipeline inner face seam crossing roughness that is connected at fan and its both sides caused, the ability of making an uproar has further been improved.

Further, the below fixed mounting of fan housing 1 has fixed plate 3, fixed plate 3 is provided with two, the stability of fan housing 1 has been improved, the below fixed mounting of fixed plate 3 has cushioning plate 4, the outside of cushioning plate 4 is provided with cover frame 5, the below fixed mounting of cover frame 5 has fixed bottom plate 6, the both sides of fixed bottom plate 6 top are provided with the mounting hole, the installation of fixed bottom plate 6 of being convenient for is fixed, the inside of cover frame 5 is provided with compression spring 13 along the below of cushioning plate 4, and compression spring 13 and cushioning plate 4 welded connection, the vibrations that can cushion the fan to produce when moving through compression spring 13's elastic action, be favorable to the steady operation of fan, one side of compression spring 13 is provided with attenuator 14, and attenuator 14 passes through bolt fixed connection with cushioning plate 4, the setting of attenuator 14, can provide the resistance, the rebound effort that the energy produced is absorbed to compression spring 13 cushioning in-process, make compression spring 13 can steadily come down, the stability to the fan shock attenuation has been improved.

Further, the inside of cover frame 5 is provided with restriction recess 15 along the both sides of cushioning board 4 respectively symmetry, restriction recess 15's inside is provided with restriction board 16, and restriction board 16 passes through bolt fixed connection with cushioning board 4, restriction board 16 and restriction recess 15's setting, can restrict the lift distance of cushioning board 4 at the cushioning in-process, reduce the motion range, be favorable to the stability of fan, restriction recess 15's inside is provided with rubber pad 17, and rubber pad 17 and cover frame 5 bonding connection, rubber pad 17's setting can slow down the collision of restriction board 16 and cover frame 5, stability has been improved.

Further, one side of the silencer plate 12 is fixedly provided with a guide ring plate 18, the inner wall of the guide ring plate 18 is flush with the inner wall of the silencer plate 12, and the guide ring plate 18 is internally provided with a conical hole 19, so that the resistance to air can be reduced, the air flow is facilitated, and the practicability is improved.

Further, the inside of fan housing 1 is provided with motor 7, and blade 8 is installed to one side of motor 7, and the output and the blade 8 fixed connection of motor 7 for motor 7 can drive blade 8 and rotate, and the equal fixed mounting in both sides of motor 7 top and below has dead lever 9, and dead lever 9 passes through bolt fixed connection with fan housing 1, and the setting of dead lever 9 has improved the position stability of motor 7.

Working principle: during the use, carry out fixed mounting with the fan through fixed baseplate 6, then the pipeline of conveying air is installed to rethread fan housing 1 both sides sideboard 2, starter motor 7, drive vane 8 rotates, make the fan operation, through the effect of inhaling the cotton 10 of sound, can absorb the noise that produces with the air friction when motor operation and blade are rotatory, prevent the noise outwards transmission, through the effect of acoustical panel 12, can prevent the pipeline transmission that the noise is connected to both sides fan, the low noise ability of fan operation has been increased, and through setting up acoustical panel 12 in the both ends opening part of fan, can absorb the tearing sound that reduces the pipeline inner face seam crossing roughness that is connected at fan and its both sides caused, further improved noise reduction ability, simultaneously through the elastic action of compression spring 13, the vibrations that produce when can cushion the fan operation, and through the setting up of attenuator 14, can provide the resistance, reduce the bounce-back that compression spring 13 bradyseism in-process absorbed energy produced, make compression spring 13 can steadily get down, the stability of fan operation has been increased.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A low noise fan comprising a fan housing (1), characterized in that: the fan comprises a fan housing (1), wherein side plates (2) are symmetrically and fixedly installed on two sides of the fan housing (1), mounting holes are formed in the side plates (2), a sound-absorbing annular cavity is formed in the fan housing (1), sound-absorbing cotton (10) is arranged in the sound-absorbing annular cavity, a sound-absorbing plate (12) is symmetrically and fixedly installed on openings on two sides of the interior of the fan housing (1), the sound-absorbing plate (12) is arranged to be annular, and a protective screen (11) is fixedly installed in the sound-absorbing plate (12).

2. A low noise fan as defined in claim 1, wherein: the fan is characterized in that a fixing plate (3) is fixedly arranged below the fan shell (1), a damping plate (4) is fixedly arranged below the fixing plate (3), a sleeve frame (5) is arranged on the outer side of the damping plate (4), and a fixing bottom plate (6) is fixedly arranged below the sleeve frame (5).

3. A low noise fan as defined in claim 2, wherein: the inside of cover frame (5) is provided with compression spring (13) along the below of bradyseism board (4), and compression spring (13) and bradyseism board (4) welded connection, one side of compression spring (13) is provided with attenuator (14), and attenuator (14) and bradyseism board (4) pass through bolt fixed connection.

4. A low noise fan according to claim 3, wherein: limiting grooves (15) are symmetrically formed in the sleeve frame (5) along two sides of the cushioning plate (4) respectively, limiting plates (16) are arranged in the limiting grooves (15), the limiting plates (16) are fixedly connected with the cushioning plate (4) through bolts, rubber pads (17) are arranged in the limiting grooves (15), and the rubber pads (17) are in adhesive connection with the sleeve frame (5).

5. A low noise fan as defined in claim 1, wherein: one side of the silencer plate (12) is fixedly provided with a guide ring plate (18), and a conical hole (19) is formed in the guide ring plate (18).

6. A low noise fan as defined in claim 1, wherein: the inside of fan shell (1) is provided with motor (7), blade (8) are installed to one side of motor (7), and the output and the blade (8) fixed connection of motor (7), both sides of motor (7) top and below are all fixed mounting have dead lever (9), and dead lever (9) and fan shell (1) pass through bolt fixed connection.