CN220319940U

CN220319940U - Noise-reducing centrifugal fan

Info

Publication number: CN220319940U
Application number: CN202321354734.0U
Authority: CN
Inventors: 蒋凤明
Original assignee: Shanghai Mingyan Machinery Manufacturing Co ltd
Current assignee: Shanghai Mingyan Machinery Manufacturing Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2024-01-09
Anticipated expiration: 2033-05-31

Abstract

The utility model relates to the technical field of fan production, in particular to a noise reduction centrifugal fan, which comprises a volute and a motor arranged at the center of one side of the volute, wherein a fixed underframe which is used for supporting and has an inverted U-shaped structure is arranged at the bottom of the motor; a damping connecting disc is arranged at one end part of the volute, which is connected with the motor, an air outlet is arranged on the volute, a plurality of noise reduction buffer blocks which are uniformly and equidistantly arranged are arranged on the outer wall of the volute, an air inlet is arranged at the center of one end of the volute, which is far away from the motor, and a protective net cover is arranged at the air inlet. According to the utility model, through the damping connecting disc and the noise reduction buffer block which are arranged on the volute, noise generated when the motor and the volute work is reduced, the damping connecting disc is made of silica gel, the noise reduction buffer block is made of sponge, the reduction effect is better, the stability of installation is improved through the fixed underframe arranged at the bottom of the motor, and the damping filler strip is arranged on the mounting foot of the fixed underframe, so that the damping effect is improved, the noise reduction effect is achieved, and the surrounding environment is improved.

Description

Noise-reducing centrifugal fan

Technical Field

The utility model relates to the technical field of fan production, in particular to a noise-reducing centrifugal fan.

Background

The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, is a driven fluid machine, and is widely used for ventilation, dust discharge and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc. Most of the existing centrifugal fans can generate resonance in the use process of the spiral case, the impeller, the motor and the base, so that great noise is brought, and great influence is brought to the working environment.

Disclosure of Invention

The utility model aims to provide a noise reduction centrifugal fan, which aims to solve the problems that most centrifugal fans in the prior art generate resonance in the use process of a volute, an impeller, a motor and a base, so that great noise is brought, and the working environment is greatly influenced.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the noise reduction centrifugal fan comprises a volute and a motor arranged at the center of one side of the volute, wherein a fixed underframe which is used for supporting and has an inverted U-shaped structure is arranged at the bottom of the motor;

the spiral case is provided with a damping connecting disc at one end part connected with the motor, an air outlet is arranged on the spiral case, a plurality of noise reduction buffer blocks which are uniformly and equidistantly arranged are arranged on the outer wall of the spiral case, an air inlet is arranged at the center of one end of the spiral case far away from the motor, and a protection net cover is arranged at the air inlet;

mounting feet are symmetrically arranged at the bottoms of two sides of the fixed underframe, and damping filler strips are mounted at the bottoms of the mounting feet.

Preferably, the protection net cover is in plug-in fit with the air inlet, and the dust collection net cover with the U-shaped section is arranged in the air inlet.

Preferably, the mesh diameter of the protective mesh enclosure is larger than that of the dust collection mesh enclosure, and the depth of the dust collection mesh enclosure is 5-8cm.

Preferably, a sound insulation layer is arranged on the outer wall of the volute, and the sound insulation layer is made of a sound insulation cotton material with the thickness of 0.5-1 mm.

Preferably, the bottom of the motor is mounted on the top surface of the fixed chassis through a mounting seat.

Preferably, the fixed underframe and the mounting feet are of an integrated structure and are made of stainless steel plates.

Preferably, the shock absorption filler strip is made of hard rubber material, and the thickness of the shock absorption filler strip is 1-2mm.

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

1. in this centrifugal fan of making an uproar falls, through the vibration attenuation connection pad and the buffer of making an uproar that falls of installing on the spiral case, the noise that reduces motor and spiral case during operation and produce, vibration attenuation connection pad adopt the silica gel material, and the buffer of making an uproar that falls adopts the sponge material, and the reducing effect is better, through the fixed chassis of installing in the motor bottom, improves the stability of installation, and installs the shock attenuation filler strip on the installation foot of fixed chassis, improves the shock attenuation effect, reaches the effect of making an uproar, improves surrounding environment.

2. In this centrifugal fan of making an uproar falls, peg graft the cooperation between protection screen panel and the air intake, and install the dust collecting screen panel that the cross-section is U in the air intake, can filter the collection with dust debris through the dust collecting screen panel that sets up, prevent to get into inside.

3. In this centrifugal fan of making an uproar falls, be provided with the puigging on the outer wall of spiral case, the puigging adopts the thickness to make for 0.5-1 mm's soundproof cotton material, and the puigging has the sound insulation effect, improves vibration attenuation noise reduction effect.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain, however, the utility model.

FIG. 1 is a schematic diagram of a forward structure of the present utility model;

FIG. 2 is a schematic view of the back structure of the present utility model;

fig. 3 is a schematic left-view structure of the present utility model.

Meaning of each reference numeral in the drawings:

10. a volute; 11. damping connecting disc; 12. a noise reduction buffer block; 13. an air outlet; 14. a protective net cover; 15. a dust collecting net cover; 16. a sound insulation layer; 17. an air inlet;

20. a motor; 21. a mounting base;

30. fixing the underframe; 31. a mounting foot; 32. shock absorbing filler strips.

Detailed Description

The following description of embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "vertical", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

1-3, the noise-reducing centrifugal fan comprises a volute 10 and a motor 20 arranged at the center of one side of the volute 10, wherein a fixed underframe 30 which is used for supporting and has an inverted U-shaped structure is arranged at the bottom of the motor 20; a damping connecting disc 11 is arranged at one end part of the volute 10 connected with the motor 20, an air outlet 13 is arranged on the volute 10, a plurality of noise reduction buffer blocks 12 which are uniformly and equidistantly arranged are arranged on the outer wall of the volute 10, an air inlet 17 is arranged at the center of one end of the volute 10 far away from the motor 20, and a protective net cover 14 is arranged at the air inlet 17; the both sides bottom symmetry of fixed chassis 30 sets up mounting foot 31, shock attenuation filler strip 32 is all installed to the bottom of every mounting foot 31, through the shock attenuation connection pad 11 and the buffer block 12 of making an uproar that falls of installing on spiral case 10, reduce the noise that motor 20 and spiral case 10 during operation produced, the shock attenuation connection pad 11 adopts the silica gel material, the buffer block 12 of making an uproar falls adopts the sponge material, the reducing effect is better, through the fixed chassis 30 at motor 20 bottom installation, the stability of installation is improved, and install shock attenuation filler strip 32 on the mounting foot 31 of fixed chassis 30, the improvement shock attenuation effect, reach the effect of making an uproar falls, improve the surrounding environment.

Further, the protection net cover 14 is in plug-in connection with the air inlet 17, and the dust collecting net cover 15 with the U-shaped section is installed in the air inlet 17, so that dust and sundries can be filtered and collected through the dust collecting net cover 15, and the dust and sundries are prevented from entering the inside.

Wherein, the mesh diameter of the protective net cover 14 is larger than that of the dust collecting net cover 15, and the depth of the dust collecting net cover 15 is 5-8cm, thereby improving the capacity of collecting dust and sundries.

It is worth noting that the sound insulation layer 16 is arranged on the outer wall of the volute 10, the sound insulation layer 16 is made of sound insulation cotton material with the thickness of 0.5-1mm, the sound insulation layer 16 has a sound insulation effect, and the vibration and noise reduction effect is improved.

Specifically, the bottom mount 21 of the motor 20 is mounted on the top surface of the fixed chassis 30, and the mount 21 is connected to the fixed chassis 30 through at least two sets of fixing bolts, so that stability is improved.

In addition, fixed chassis 30 and mounting foot 31 are integrated into one piece structure and all adopt corrosion resistant plate material to make, and shock attenuation filler strip 32 adopts hard rubber material to make, and thickness is 1-2mm, improves shock attenuation effect.

The working principle of the noise reduction centrifugal fan is as follows: when the fan-type motor is used, an operator connects the mounting seat 21 at the bottom of the motor 20 to the fixed underframe 30 through at least two groups of fixing bolts, connects the damping cushion strips 32 to the bottom of the mounting feet 31, installs the fixed underframe 30 at the fan fixing position through mounting screws, and reduces noise generated by the motor 20 and the volute 10 through the effects of the damping connecting disc 11 and the noise reduction buffer block 12 when the motor 20 works, so that the noise reduction effect is achieved, and the surrounding environment is improved.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a centrifugal fan of making an uproar falls which characterized in that: the spiral casing comprises a spiral casing (10) and a motor (20) arranged at the center of one side of the spiral casing (10), wherein a fixed underframe (30) which is used for supporting and has an inverted U-shaped structure is arranged at the bottom of the motor (20);

the novel noise reduction structure comprises a volute (10), a motor (20) and a protection screen cover (14), wherein a damping connecting disc (11) is arranged at one end part of the volute (10) connected with the motor (20), an air outlet (13) is formed in the volute (10), a plurality of noise reduction buffer blocks (12) which are uniformly and equidistantly arranged are arranged on the outer wall of the volute (10), an air inlet (17) is formed in the center of one end of the volute (10) far away from the motor (20), and the protection screen cover (14) is arranged at the air inlet (17);

mounting feet (31) are symmetrically arranged at the bottoms of two sides of the fixed underframe (30), and damping filler strips (32) are mounted at the bottoms of the mounting feet (31).

2. The noise-reducing centrifugal fan according to claim 1, wherein: the protection net cover (14) is in plug-in connection with the air inlet (17), and a dust collection net cover (15) with a U-shaped section is arranged in the air inlet (17).

3. The noise-reducing centrifugal fan according to claim 2, wherein: the mesh diameter of the protective mesh enclosure (14) is larger than that of the dust collection mesh enclosure (15), and the depth of the dust collection mesh enclosure (15) is 5-8cm.

4. The noise-reducing centrifugal fan according to claim 1, wherein: the outer wall of the volute (10) is provided with a sound insulation layer (16), and the sound insulation layer (16) is made of a sound insulation cotton material with the thickness of 0.5-1 mm.

5. The noise-reducing centrifugal fan according to claim 1, wherein: the bottom of the motor (20) is mounted on the top surface of the fixed underframe (30) through a mounting seat (21).

6. The noise-reducing centrifugal fan according to claim 1, wherein: the fixed underframe (30) and the mounting feet (31) are of an integrated structure and are made of stainless steel plates.

7. The noise-reducing centrifugal fan according to claim 1, wherein: the shock absorption filler strip (32) is made of hard rubber material, and the thickness is 1-2mm.