CN219888359U

CN219888359U - Low-noise fan

Info

Publication number: CN219888359U
Application number: CN202321252780.XU
Authority: CN
Inventors: 郜彦琴; 杨进
Original assignee: Zhejiang Chimus Environmental Technology Co ltd
Current assignee: Zhejiang Chimus Environmental Technology Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-10-24
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses a low-noise fan, which relates to the field of fans and comprises a fan barrel, wherein a fixed ring seat is fixed in the middle of an inner cavity of the fan barrel, a motor is arranged in the middle of the fixed ring seat, an output end of the motor is connected with an impeller, annular silencing layers are arranged at the front part of the inner cavity and the rear part of the inner cavity of the fan barrel, the annular silencing layers are in threaded connection with the fixed ring seat, a protective cover is sleeved on the outer side of the motor, and the surface of the protective cover is connected with first sound-absorbing cotton pads at equal intervals through bolts. According to the utility model, the annular silencing layers are arranged at the front part and the rear part of the inner cavity of the fan barrel, and comprise the annular polyester fiber acoustic board and the centrifugal glass cotton therein, so that when the pressure gas generated by the operation of the fan rubs with the annular silencing layer, the annular silencing layer can effectively absorb noise generated by friction, and simultaneously, the noise generated by the operation of the motor is absorbed, so that the noise of the low-noise fan is low during the operation.

Description

Low-noise fan

Technical Field

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

Background

The fan is a machine which relies on input mechanical energy to improve gas pressure and discharge gas, is a driven fluid machine, is a habit of gas compression and gas conveying machine for short in China, and is widely used for ventilation, dust discharge and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings.

At present, because the fan is in the operation in-process, the pressure gas flows fast in the fan shell and collides with the fan wall friction for the fan can produce a large amount of noise when the during operation, and this kind of noise causes serious noise pollution, produces harmful effect to people's production life.

Therefore, it is necessary to invent a low noise fan to solve the above problems.

Disclosure of Invention

The utility model aims to provide a low-noise fan so as to solve the problems that the fan provided in the background art can generate a large amount of noise during working, the noise causes serious noise pollution and has adverse effects on the production and life of people.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a low noise fan, includes the fan barrel, the inner chamber middle part of fan barrel is fixed with solid fixed ring seat, gu fixed ring seat's middle part is provided with the motor, the output of motor is connected with the impeller, the inner chamber front portion and the inner chamber rear portion of fan barrel all are provided with annular amortization layer, threaded connection between annular amortization layer and the solid fixed ring seat, the protection casing has been cup jointed in the outside of motor, the equidistant first cotton pad of inhaling of having of surface of protection casing is through bolted connection.

Preferably, the annular noise reduction layer comprises an annular polyester fiber sound absorption plate, a containing cavity is formed in the annular polyester fiber sound absorption plate, centrifugal glass wool is filled in the containing cavity, a plurality of sound absorption holes are formed in the inner wall of the annular polyester fiber sound absorption plate at equal intervals, the sound absorption holes are communicated with the containing cavity, and a metal annular plate is fixedly sleeved on the outer wall of the annular polyester fiber sound absorption plate.

Preferably, a plurality of backup pads are fixed with equidistant in the outside of protection casing, and a plurality of the one end that the protection casing was kept away from to the backup pad is connected with the inner wall of solid fixed ring seat, supports the protection casing through the backup pad for protection casing installation is stable, thereby makes motor installation stable.

Preferably, the side wall of backup pad bonds has the second to inhale the sound cotton pad, and the second inhales the sound cotton pad and can play and inhale the sound effect of making an uproar, has improved the noise reduction performance of this low noise fan.

Preferably, the front end and the rear end of the fixed ring seat are both fixed with internal thread rings, one side of the metal ring plate, which is close to the fixed ring seat, is fixed with an external thread ring, and the external thread ring is in threaded connection with the internal thread ring, so that the metal ring plate is simply connected with the fixed ring seat, and the annular silencing layer is simply connected with the fixed ring seat, thereby being convenient to detach.

Preferably, the metal ring plate and the external thread ring are integrally formed by adopting aluminum alloy materials, so that the metal ring plate is high in structural strength and light in weight.

Preferably, the annular silencing layer is far away from the inner wall of one end of the fixed ring seat, a plurality of handles are fixed at equal intervals, acting force is convenient to be exerted on the annular silencing layer through the handles, and therefore the annular silencing layer is convenient to rotate, and installation or disassembly of the annular silencing layer is convenient.

Preferably, both ends port all has the protection network through bolted connection around the fan barrel, and the protection network plays the guard action, avoids the foreign matter to get into in the fan barrel and causes the damage to the impeller, and the protection network installation is simple simultaneously, convenient to detach.

In the technical scheme, the utility model has the technical effects and advantages that:

1. the annular silencing layers are arranged at the front part of the inner cavity and the rear part of the inner cavity of the fan barrel and comprise an annular polyester fiber acoustic board and centrifugal glass cotton therein, when the fan works to generate pressure gas to rub with the annular silencing layer, the annular silencing layer can effectively absorb noise generated by friction, and meanwhile, the noise generated by the motor during working is absorbed, so that the noise reduction effect is improved, and the noise of the low-noise fan during working is low;

2. through threaded connection between annular amortization layer and the fixed ring seat for be connected simply between annular amortization layer and the fixed ring seat, when annular amortization layer damaged, be convenient for dismantle annular amortization layer and change.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

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

FIG. 2 is a schematic view of the present utility model with the protective net removed;

FIG. 3 is a schematic view of a retaining ring seat according to the present utility model;

FIG. 4 is a cross-sectional view of a retaining ring seat according to the present utility model;

FIG. 5 is a schematic view of an annular sound damping layer of the present utility model;

fig. 6 is a cross-sectional view of an annular sound attenuation layer of the present utility model.

Reference numerals illustrate:

1. a fan barrel; 2. a fixed ring seat; 3. a motor; 4. an impeller; 5. an annular silencing layer; 6. an annular polyester fiber sound absorbing plate; 7. a receiving chamber; 8. centrifuging glass wool; 9. a sound absorbing hole; 10. a metal ring plate; 11. a protective cover; 12. a support plate; 13. a first sound absorbing cotton pad; 14. a second sound absorbing cotton pad; 15. an internally threaded ring; 16. an external threaded ring; 17. a handle; 18. and a protective net.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The utility model provides a low-noise fan as shown in fig. 1-6, which comprises a fan barrel 1, wherein a fixed ring seat 2 is fixed in the middle of an inner cavity of the fan barrel 1, a motor 3 is arranged in the middle of the fixed ring seat 2, an impeller 4 is connected to the output end of the motor 3, annular silencing layers 5 are arranged at the front part of the inner cavity of the fan barrel 1 and the rear part of the inner cavity, the annular silencing layers 5 are in threaded connection with the fixed ring seat 2, a protective cover 11 is sleeved on the outer side of the motor 3, and first sound-absorbing cotton pads 13 are connected to the surface of the protective cover 11 at equal intervals through bolts.

The annular sound attenuation layer 5 includes annular polyester fiber abatvoix 6, the inside of annular polyester fiber abatvoix 6 has been seted up and has been held chamber 7, the inside that holds chamber 7 is filled with centrifugal glass cotton 8, a plurality of sound absorbing holes 9 have been seted up to the equidistant inner wall of annular polyester fiber abatvoix 6, sound absorbing holes 9 link up mutually with holding chamber 7, metal annular plate 10 has been cup jointed to the outer wall of annular polyester fiber abatvoix 6, annular polyester fiber abatvoix 6 and the noise that the centrifugal glass cotton 8 in it can absorb the friction effectively, the noise that produces when absorbing motor 3 during operation has improved the noise reduction effect simultaneously.

The outside equidistant a plurality of backup pads 12 that are fixed with of protection casing 11, the one end that protection casing 11 was kept away from to a plurality of backup pads 12 is connected with the inner wall of solid fixed ring seat 2, supports protection casing 11 through backup pad 12 for protection casing 11 installation is stable, thereby makes motor 3 installation stable.

The side wall of the supporting plate 12 is adhered with the second sound-absorbing cotton pad 14, and the second sound-absorbing cotton pad 14 can achieve the effects of sound absorption and noise reduction, so that the noise reduction performance of the low-noise fan is improved.

The metal ring plate 10 and the external thread ring 16 are integrally formed by adopting aluminum alloy materials, and the metal ring plate has high structural strength and light weight.

The front end port and the rear end port of the fan barrel 1 are connected with the protective net 18 through bolts, the protective net 18 plays a protective role, foreign objects are prevented from entering the fan barrel 1 to damage the impeller 4, and meanwhile the protective net 18 is simple to install and convenient to detach.

The front part of the inner cavity of the fan barrel 1 and the rear part of the inner cavity are both provided with the annular silencing layer 5, the annular silencing layer 5 comprises an annular polyester fiber acoustic board 6 and centrifugal glass cotton 8 in the annular polyester fiber acoustic board, the motor 3 works to drive the impeller 4 to rotate, so that air flows in the fan barrel 1, when the air flows in friction with the annular silencing layer 5, the annular polyester fiber acoustic board 6 and the centrifugal glass cotton 8 in the annular polyester fiber acoustic board can effectively absorb noise generated by friction, noise generated by the motor 3 during operation is absorbed, the noise reduction effect is improved, the first acoustic cotton pads 13 are connected to the surface of the protective cover 11 at equal intervals through bolts, the second acoustic cotton pads 14 are bonded to the side wall of the supporting plate 12, and the first acoustic cotton pads 13 and the second acoustic cotton pads 14 can absorb the noise in the air flow passing through the protective cover 11 and the supporting plate 12, so that the noise reduction effect is further improved, and the noise generated during operation of the fan is low.

As shown in fig. 3 and 5, the annular silencing layer 5 is in threaded connection with the fixed ring seat 2, the front end and the rear end of the fixed ring seat 2 are both fixed with the internal thread ring 15, one side of the metal ring plate 10, which is close to the fixed ring seat 2, is fixed with the external thread ring 16, and the external thread ring 16 is in threaded connection with the internal thread ring 15, so that the connection between the metal ring plate 10 and the fixed ring seat 2 is simple, and the connection between the annular silencing layer 5 and the fixed ring seat 2 is simple and convenient to detach.

The annular silencing layer 5 is far away from the inner wall of one end of the fixed ring seat 2, a plurality of handles 17 are fixed at equal intervals, acting force is facilitated on the annular silencing layer 5 through the handles 17, and therefore the annular silencing layer 5 is conveniently rotated, and installation or disassembly of the annular silencing layer 5 is facilitated.

When the annular silencing layer 5 is installed, one end of the annular silencing layer 5 with the external thread ring 16 is plugged into the fan barrel 1, then the handle 17 on the annular silencing layer 5 is rotated to drive the annular silencing layer 5 to rotate, so that the external thread ring 16 on the annular silencing layer 5 is in threaded connection with the internal thread ring 15 on the fixed ring seat 2, and the installation of the annular silencing layer 5 is realized and is simple; when the annular silencing layer 5 needs to be disassembled, the protective net 18 at the port of the machine barrel 1 of the fan is disassembled firstly, then the handle 17 is reversely rotated to drive the annular silencing layer 5 to reversely rotate, the external threaded ring 16 on the annular silencing layer 5 is separated from the internal threaded ring 15 on the fixed ring seat 2, and then the annular silencing layer 5 is pulled out, so that the annular silencing layer 5 is quite simple to disassemble, and the annular silencing layer 5 is convenient to replace.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. A low noise fan comprising a fan barrel (1), characterized in that: the utility model discloses a fan barrel, including fan barrel, fixed ring seat (2), motor (3) are provided with at the inner chamber middle part of fan barrel (1), the middle part of fixed ring seat (2) is provided with motor (3), the output of motor (3) is connected with impeller (4), the inner chamber front portion and the inner chamber rear portion of fan barrel (1) all are provided with annular amortization layer (5), threaded connection between annular amortization layer (5) and fixed ring seat (2), protection casing (11) have been cup jointed in the outside of motor (3), the equidistant cotton pad (13) of first inhaling of having on the surface of protection casing (11) through bolted connection.

2. A low noise fan as defined in claim 1, wherein: annular amortization layer (5) are including annular polyester fiber abatvoix (6), hold chamber (7) have been seted up to the inside of annular polyester fiber abatvoix (6), the inside of holding chamber (7) is filled with centrifugal glass cotton (8), a plurality of sound absorbing holes (9) have been seted up to the equidistant inner wall of annular polyester fiber abatvoix (6), sound absorbing holes (9) link up mutually with holding chamber (7), the outer wall of annular polyester fiber abatvoix (6) is fixed to have cup jointed metal annular plate (10).

3. A low noise fan as defined in claim 1, wherein: a plurality of supporting plates (12) are fixed on the outer side of the protective cover (11) at equal intervals, and one ends, far away from the protective cover (11), of the supporting plates (12) are connected with the inner wall of the fixed ring seat (2).

4. A low noise fan according to claim 3, wherein: the side wall of the supporting plate (12) is adhered with a second sound-absorbing cotton pad (14).

5. A low noise fan as defined in claim 2, wherein: the front end and the rear end of the fixed ring seat (2) are respectively fixed with an internal thread ring (15), one side, close to the fixed ring seat (2), of the metal ring plate (10) is fixed with an external thread ring (16), and the external thread ring (16) is in threaded connection with the internal thread ring (15).

6. The low noise fan of claim 5, wherein: the metal ring plate (10) and the external thread ring (16) are integrally formed by adopting an aluminum alloy material.

7. A low noise fan as defined in claim 1, wherein: a plurality of handles (17) are fixed on the inner wall of one end of the annular silencing layer (5) far away from the fixed ring seat (2) at equal intervals.

8. A low noise fan as defined in claim 1, wherein: the front end port and the rear end port of the fan barrel (1) are connected with a protective net (18) through bolts.