CN218151672U - Centrifugal fan vibration/noise reduction structure - Google Patents

Abstract

The utility model discloses a centrifugal fan vibration/noise reduction structure belongs to centrifugal fan technical field, and its technical scheme main points include the bottom plate, and four turnings of bottom plate up end all have first buffer board through pivot movable mounting, and there is the second buffer board at the top of first buffer board through pivot movable mounting, installs the spring between second buffer board and the first buffer board. During the use, fan wheel pivoted in-process, a plurality of bumper shock absorbers can cooperate second buffer board and first buffer board to further cushion the shaking force that transmits to the backup pad, thereby effectively slow down centrifuge fan shell vibrations, a plurality of amortization slotted holes can offset partial noise bumps this moment, the noise reduction transmission, and first sound absorption cotton and acoustic celotex board mutually support, will further the transmission of separation and noise reduction, and the second is inhaled the sound cotton and can be weakened the noise in the play dryer, thereby effectively play the effect of making an uproar, can reach vibration/noise reduction's effect.

Description

Centrifugal fan vibration/noise reduction structure

Technical Field

The utility model relates to a centrifugal fan technical field, in particular to centrifugal fan vibration/noise reduction structure.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and the principle of the centrifugal fan is that gas is accelerated by utilizing an impeller rotating at a high speed, then the gas is decelerated and the flow direction is changed according to the principle that kinetic energy is converted into potential energy, and when the centrifugal fan operates, the whole fan can vibrate due to the continuous rotation of the impeller.

The existing centrifugal fan generally does not have damping performance, and noise is large when the centrifugal fan works, so that the influence on the working environment is large, the centrifugal fan is used for a long time, all connecting points of the centrifugal fan can be loosened, the centrifugal fan is unstable in operation when the centrifugal fan is serious, and accidents are easy to happen.

Disclosure of Invention

The utility model discloses to above problem, provide a centrifugal fan vibration/noise reduction structure, have effective shock attenuation and the characteristics of making an uproar of falling.

The utility model relates to a realize like this, a centrifugal fan vibration/noise reduction structure, including the bottom plate, four turnings of bottom plate up end all have first buffer board through pivot movable mounting, and there is the second buffer board at the top of first buffer board through pivot movable mounting, installs the spring between second buffer board and the first buffer board. The top of second buffer board has the backup pad through pivot movable mounting, centrifuge fan shell is installed to the up end of backup pad, centrifuge fan shell's internally mounted has fan wheel, be provided with between centrifuge fan shell's the inside wall and the lateral wall of fan wheel and be annular acoustical panel, a plurality of evenly distributed's amortization slotted hole is seted up to one side that the acoustical panel is close to fan wheel, the acoustical panel is kept away from one side of fan wheel and is installed first sound absorption cotton, install the acoustic celotex board between the inside wall of one side that the acoustical panel was kept away from to first sound absorption cotton and centrifuge fan shell.

Buffering the vibrations power that the backup pad received in order to cooperate second buffer board and first buffer board, as the utility model discloses a centrifugal fan vibration/noise reduction structure is preferred, installs a plurality of evenly distributed's bumper shock absorbers between the up end of bottom plate and the bottom face of backup pad.

In order to fall making an uproar, as the utility model discloses a centrifugal fan vibration/noise reduction structure is preferred, the left side wall of abatvoix, first sound cotton, acoustic celotex board and centrifugal fan shell runs through and fixed mounting has the play dryer, and the inside wall that goes out the dryer is installed the second and is inhaled the sound cotton, and the second is inhaled the cotton inside wall and is installed the net section of thick bamboo of sound.

In order to drive fan wheel and rotate, as the utility model discloses a centrifugal fan vibration/noise reduction structure is preferred, the support frame is installed to the rear end face of centrifuge fan shell, and the internally mounted of support frame has the motor, and the output of motor runs through the rear end of centrifuge fan shell and with fan wheel fixed connection.

In order to filter outside dust, conduct the utility model discloses a centrifugal fan vibration/noise reduction structure is preferred, the preceding terminal surface intercommunication of centrifuge fan shell has an air inlet section of thick bamboo, and the internally mounted of an air inlet section of thick bamboo has the filter screen.

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

this kind of centrifugal fan vibration/noise reduction structure, fan wheel pivoted in-process can drive the vibrations of centrifuge fan shell, and first buffer board and second buffer board rotate relatively this moment, and then can compress the spring, and a plurality of bumper shock absorbers can cooperate second buffer board and first buffer board to further cushion the vibrations power of transmitting to the backup pad simultaneously to effectively slow down the vibrations of centrifuge fan shell. When the noise that fan wheel rotated the production transmits to the abatvoix on, a plurality of amortization slotted holes can offset partial noise bump, the noise reduction transmission, and first sound absorption cotton and acoustic celotex board mutually support, will further the transmission of separation and noise reduction to the second is inhaled the sound cotton and can be weakened the noise in the play dryer, thereby effectively plays the effect of making an uproar of falling, can reach vibration/noise reduction's effect.

Drawings

Fig. 1 is a structural diagram of a vibration/noise reduction structure of a centrifugal fan according to the present invention;

fig. 2 is a cross-sectional view of the centrifugal fan of fig. 1 according to the present invention;

fig. 3 is a right side sectional view of fig. 2 according to the present invention.

In the figure, 1, a bottom plate; 101. a shock absorber; 2. a first buffer plate; 201. a second buffer plate; 202. a spring; 203. a support plate; 3. a centrifuge fan housing; 301. an air inlet cylinder; 302. an air outlet cylinder; 4. a fan impeller; 401. a support frame; 402. a motor; 5. a sound-absorbing plate; 501. a silencing slot; 6. a first sound absorbing cotton; 601. a sound insulating panel; 7. a net drum; 701. the second sound-absorbing cotton.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, a vibration and noise reduction structure of a centrifugal fan includes a bottom plate 1, a first buffer plate 2 is movably mounted at four corners of an upper end surface of the bottom plate 1 through a rotating shaft, a second buffer plate 201 is movably mounted at a top of the first buffer plate 2 through a rotating shaft, and a spring 202 is mounted between the second buffer plate 201 and the first buffer plate 2. There is backup pad 203 at the top of second buffer board 201 through pivot movable mounting, centrifuge fan housing 3 is installed to the up end of backup pad 203, centrifuge fan housing 3's internally mounted has fan wheel 4, be provided with between centrifuge fan housing 3's the inside wall and the fan wheel 4's the lateral wall and be annular acoustical panel 5, a plurality of evenly distributed's amortization slotted hole 501 has been seted up to one side that acoustical panel 5 is close to fan wheel 4, acoustical panel 5 keeps away from one side of fan wheel 4 and installs first sound absorption cotton 6, install acoustic panel 601 between one side that acoustical panel 5 was kept away from to first sound absorption cotton 6 and the inside wall of centrifuge fan housing 3.

In this embodiment: 4 pivoted in-process of fan wheel can drive 3 vibrations of centrifuge fan shell, and first buffer board 2 and second buffer board 201 rotate relatively this moment, and then can compress spring 202 to effectively slow down 3 vibrations of centrifuge fan shell. When the noise that fan wheel 4 rotated the production this moment transmitted to abatvoix 5 on, a plurality of amortization slotted holes 501 can offset partial noise bump, and the noise reduction transmission, and first sound absorbing cotton 6 and acoustic celotex board 601 mutually support, will further the transmission of separation and noise reduction to effectively play the effect of making an uproar, reach the purpose of vibration/noise reduction.

A plurality of dampers 101 are installed between the upper end surface of the base plate 1 and the lower end surface of the supporting plate 203 and are uniformly distributed. By installing a plurality of shock absorbers 101, the supporting plate 203 is supported and simultaneously the shock force applied to the supporting plate 203 can be buffered by matching with the second buffer plate 201 and the first buffer plate 2.

The acoustical panel 5, first sound absorption cotton 6, acoustic celotex board 601 and the left side wall of centrifuge fan shell 3 shell run through and fixed mounting has the exhaust fan 302, and the second is inhaled cotton 701 of inhaling is installed to the inside wall of exhaust fan 302, and the net section of thick bamboo 7 is installed to the inside wall that the second was inhaled cotton 701. Through setting up net section of thick bamboo 7, can inhale sound cotton 701 with the second and fix for the sound cotton 701 is inhaled to the second can weaken the noise in the play dryer 302, plays the effect of making an uproar.

The rear end face of centrifuge fan shell 3 installs support frame 401, and the internally mounted of support frame 401 has motor 402, and the output of motor 402 runs through the rear end of centrifuge fan shell 3 and with fan wheel 4 fixed connection. The wind power transmission is performed by turning on the motor 402 so that the fan wheel 4 rotates.

The front end face of the centrifuge fan shell 3 is communicated with an air inlet barrel 301, and a filter screen is arranged inside the air inlet barrel 301. By installing the filter screen in the air inlet drum 301, external dust is prevented from entering the inside of the centrifuge fan.

The utility model discloses a theory of operation and use flow:

firstly, when using the device, motor 402 is started first, motor 402 drives 4 pivoted in-process of fan wheel, can drive 3 vibrations of centrifuge fan shell, first buffer board 2 and second buffer board 201 receive the vibrations power after this moment, first buffer board 2 and second buffer board 201 rotate relatively, and then can compress spring 202, the spring 202 compression can cushion the vibrations power, and a plurality of bumper shock absorbers 101 can cooperate second buffer board 201 and first buffer board 2 further to cushion the vibrations power that transmits to backup pad 203, thereby can slow down 3 vibrations of centrifuge fan shell. Meanwhile, when the noise generated by the rotation of the fan impeller 4 is transmitted to the silencing plate 5, part of the noise can be dispersed and can be offset by collision through the silencing slotted holes 501, the noise is reduced, the first sound absorption cotton 6 and the sound insulation plate 601 are matched with each other, the transmission of the noise and the noise is further blocked, and the second sound absorption cotton 701 can weaken the noise in the air outlet cylinder 302, so that the noise reduction effect is achieved.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only the preferred embodiments of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a centrifugal fan vibration/noise reduction structure, includes bottom plate (1), its characterized in that: four corners of the upper end face of the bottom plate (1) are respectively and movably provided with a first buffer plate (2) through a rotating shaft, the top of the first buffer plate (2) is movably provided with a second buffer plate (201) through a rotating shaft, a spring (202) is arranged between the second buffer plate (201) and the first buffer plate (2), and the top of the second buffer plate (201) is movably provided with a support plate (203) through a rotating shaft;

centrifuge fan shell (3) are installed to the up end of backup pad (203), the internally mounted of centrifuge fan shell (3) has fan wheel (4), be provided with between the inside wall of centrifuge fan shell (3) and the lateral wall of fan wheel (4) and be annular acoustical panel (5), a plurality of evenly distributed's amortization slotted hole (501) are seted up to one side that acoustical panel (5) are close to fan wheel (4), one side that fan wheel (4) were kept away from in acoustical panel (5) is installed first sound cotton (6) of inhaling, install acoustic celotex board (601) between the inside wall of one side that acoustical panel (5) were kept away from in first sound cotton (6) and centrifuge fan shell (3).

2. The vibration and noise reduction structure of the centrifugal fan as claimed in claim 1, wherein: a plurality of shock absorbers (101) which are uniformly distributed are arranged between the upper end surface of the bottom plate (1) and the bottom end surface of the supporting plate (203).

3. The vibration and noise reduction structure of the centrifugal fan according to claim 1, wherein: the utility model discloses a centrifugal fan, including noise reduction board (5), the first left side wall of inhaling sound cotton (6), acoustic celotex board (601) and centrifuge fan shell (3) shell run through and fixed mounting has play dryer (302), the inside wall of play dryer (302) is installed the second and is inhaled sound cotton (701), the second is inhaled the inside wall of sound cotton (701) and is installed net section of thick bamboo (7).

4. The vibration and noise reduction structure of the centrifugal fan as claimed in claim 1, wherein: the rear end face of the centrifuge fan shell (3) is provided with a support frame (401), a motor (402) is arranged inside the support frame (401), and the output end of the motor (402) penetrates through the rear end of the centrifuge fan shell (3) and is fixedly connected with the fan impeller (4).

5. The vibration and noise reduction structure of the centrifugal fan as claimed in claim 1, wherein: the front end face of the centrifuge fan shell (3) is communicated with an air inlet barrel (301), and a filter screen is arranged inside the air inlet barrel (301).

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