CN212536153U

CN212536153U - Fan shell with noise reduction function

Info

Publication number: CN212536153U
Application number: CN202021333935.9U
Authority: CN
Inventors: 冯文义
Original assignee: Shanghai Dingrui Mould Technology Co ltd
Current assignee: Shanghai Dingrui Mould Technology Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-02-12
Anticipated expiration: 2030-07-08

Abstract

The application relates to a fan shell with a noise reduction function, which comprises a shell body, a fan air inlet and a fan air outlet, wherein an air duct is arranged at the fan air outlet, and an air inlet, a filtering mechanism, a buffering mechanism, a silencing mechanism and an air outlet are sequentially arranged in the air duct; the silencing mechanism comprises a silencer arranged on one side of the air outlet, a group of silencing pieces are arranged in the silencer, and one end of each silencing piece, which is close to the air inlet, is arc-shaped. This application has the effect that can reduce the noise that the fan during operation produced.

Description

Fan shell with noise reduction function

Technical Field

The application relates to the field of fan equipment, in particular to a fan shell with a noise reduction function.

Background

The existing fan is used as an air supply device, not only can be used for an air conditioner, but also can be used for other occasions needing air supply and ventilation. The structure of the fan generally comprises a shell and an impeller arranged in the shell, wherein the impeller is connected with an external power shaft, and the power shaft drives the impeller to rotate.

The prior art can refer to the chinese utility model patent with the grant publication number CN205243948U, and it discloses a fan shell, including shell main part, air outlet and income wind gap first straight hole has been seted up along lateral wall thickness direction on the air outlet lateral wall go up to have seted up the second straight hole along lateral wall thickness direction on the lateral wall of income wind gap, first straight hole with the second straight hole is linked together.

In view of the above-mentioned related art, the inventor believes that there is a defect that the noise is large during the operation of the fan.

SUMMERY OF THE UTILITY MODEL

In order to reduce the noise that the fan produced in the course of the work, this application provides a fan casing with function of making an uproar falls.

The application provides a fan casing with function of making an uproar is fallen adopts following technical scheme:

a fan shell with a noise reduction function comprises a shell body, a fan air inlet and a fan air outlet, wherein an air duct is mounted at the fan air outlet, and an air inlet, a filtering mechanism, a buffering mechanism, a silencing mechanism and an air outlet are sequentially arranged in the air duct; the silencing mechanism comprises a silencer arranged on one side of the air outlet, a group of silencing pieces are arranged in the silencer, and one end, close to the air inlet, of each silencing piece is arc-shaped.

Through adopting above-mentioned technical scheme, when the fan began the during operation, the air outlet of fan produced the air current, and in the air current got into the dryer through the dryer air intake, when the circular-arc terminal surface of amortization piece was reachd to the air current can be divided into the air current more than the twice to be convenient for lead the lateral wall of two adjacent amortization pieces with the air current, make the sound of air current can be absorbed well, and then reduce the noise that produces in the fan working process.

Preferably, buffer gear includes the first baffle that a plurality of intervals set up, and is a plurality of first baffle all sets up to the lopsidedness that is close to noise cancelling mechanism, and is a plurality of first through-hole has all been seted up on the first baffle, and is a plurality of first through-hole collineation sets up.

Through adopting above-mentioned technical scheme, when the surface of air current flow direction first baffle, first baffle blocks the air current, through the effect back that blocks of a plurality of first baffles, the velocity of flow of air current can reduce gradually to reduce the noise that the air current produced.

Preferably, buffer gear still includes the second baffle that a plurality of intervals set up, and is a plurality of the second baffle all sets up to the lopsidedness of keeping away from noise cancelling mechanism, and is a plurality of the second through-hole has all been seted up on the second baffle, and is a plurality of the collineation of second through-hole sets up.

Through adopting above-mentioned technical scheme, the second baffle further reduces the velocity of flow of air current to the noise that the air current produced is further reduced.

Preferably, a reversing plate is arranged between the first partition plate and the second partition plate, one end of the reversing plate, which is close to the first partition plate, is provided with a third through hole which is obliquely arranged, and the third through hole is collinear with the first through hole; one end of the reversing plate, which is close to the second partition plate, is provided with a fourth through hole which is obliquely arranged, and the fourth through hole is collinear with the second through hole; the third through hole is communicated with the fourth through hole.

By adopting the technical scheme, the reversing plate guides the airflow passing through the first through hole, so that the airflow of the first through hole can flow to the second through hole conveniently.

Preferably, the filtering mechanism comprises a first filter screen, the first filter screen is vertically and fixedly connected to the inner side wall of the air duct, and the first filter screen is installed between the air inlet and the buffering mechanism.

Through adopting above-mentioned technical scheme, first filter screen filters the air current of dryer air intake, reduces in the debris entering buffer gear in the air current.

Preferably, a first opening is formed in the outer side wall of the air duct between the first filter screen and the buffer mechanism, a first cover body is arranged on the first opening, one end of the first cover body is hinged to the wall of the air duct at one end of the first opening, and the other end of the first cover body is connected with the wall of the air duct at the other end of the first opening through a bolt.

By adopting the technical scheme, the first opening is arranged, so that dust on the first filter screen can be cleaned regularly, and the damaged first filter screen can be replaced conveniently; through changing first filter screen, also be convenient for clear up the debris that first filter screen filtered.

Preferably, the filter mechanism further comprises a second filter screen, the second filter screen is vertically installed on the inner side wall of the air duct, and the second filter screen is installed between the buffer mechanism and the silencing mechanism.

Through adopting above-mentioned technical scheme, the second filter screen filters the air current once more to can reduce the dust in the air current and get into among the canceling sound mechanical system.

Preferably, a second opening is formed in the outer side wall of the air duct between the buffer mechanism and the second filter screen, a second cover body is arranged on the second opening, one end of the second cover body is hinged to the wall of the air duct at one end of the second opening, and the other end of the second cover body is connected with the wall of the air duct at the other end of the second opening through a bolt.

Through adopting above-mentioned technical scheme, through setting up the second opening, can regularly clear up the dust on the second filter screen, also be convenient for change the second filter screen of damage.

Preferably, the air outlet is in threaded connection with a sealing cover.

Through adopting above-mentioned technical scheme, when the fan stop work, will seal the lid and install in dryer air outlet department, can reduce in the dust in the air passes through in the dryer air outlet gets into the dryer.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the fan starts to work, the air outlet of the fan generates air flow, the air flow enters the air cylinder through the air inlet of the air cylinder, and when the air flow reaches the arc-shaped end surfaces of the silencing pieces, the air flow is divided into more than two air flows, so that the air flow is conveniently guided to the two adjacent silencing pieces, the sound of the air flow can be well absorbed, and the noise generated in the working process of the fan is further reduced;

2. the first filter screen filters the airflow at the air inlet of the air duct, so that impurities in the airflow are reduced to enter the buffer mechanism;

3. by arranging the first opening, dust on the first filter screen can be cleaned regularly, and the damaged first filter screen can be replaced conveniently; through changing first filter screen, also be convenient for clear up the debris that first filter screen filtered.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the application;

fig. 2 is a sectional view of the inner structure of the air duct in the embodiment of the present application.

Description of reference numerals: 1. a housing body; 11. an air inlet of the fan; 12. an air outlet of the fan; 2. an air duct; 21. an air inlet; 22. a filtering mechanism; 221. a first filter screen; 222. a second filter screen; 23. a buffer mechanism; 231. a first separator; 232. a first through hole; 233. a second separator; 234. a second through hole; 235. a reversing plate; 236. a third through hole; 237. a fourth via hole; 24. a silencing mechanism; 241. a muffler; 242. a silencing sheet; 243. mounting a plate; 25. an air outlet; 261. a first opening; 262. a first cover body; 263. a second opening; 264. a second cover body; 265. and (7) sealing the cover.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses fan casing with function of making an uproar is fallen. Referring to fig. 1, the blower housing structure with noise reduction function includes a housing body 1, a blower air inlet 11, a blower air outlet 12, and an air duct 2 installed at the blower air outlet 12; the wind barrel 2 is cylindrical.

Referring to fig. 2, an air inlet 21, a filtering mechanism 22, a buffering mechanism 23, a silencing mechanism 24 and an air outlet 25 are sequentially arranged inside the air duct 2; the air outlet 25 is in threaded connection with a sealing cover 265.

The filter mechanism 22 includes a first filter screen 221. The first filter screen 221 is vertically arranged and fixedly connected to the inner side wall of the air duct 2 through a bolt, and the first filter screen 221 is installed between the air inlet 21 and the buffer mechanism 23. The first filter screen 221 filters the airflow at the air inlet 21, so as to reduce impurities in the airflow from entering the buffer mechanism 23.

A first opening 261 is formed in the outer side wall of the air duct 2 between the first filter screen 221 and the buffer mechanism 23, the cross section of the first opening 261 is arc-shaped, a first cover 262 is arranged on the first opening 261, one end of the first cover 262 is hinged to the wall of the air duct 2 at one end of the first opening 261, and the other end of the first cover 262 is connected with the wall of the air duct 2 at the other end of the first opening 261 through a bolt. By arranging the first opening 261, dust on the first filter screen 221 can be cleaned regularly, and the damaged first filter screen 221 can be replaced conveniently; through changing first filter screen 221, also be convenient for clear up the debris that first filter screen 221 filtered.

The buffer mechanism 23 includes a first partition 231, a reversing plate 235, and a second partition 233, which are arranged in this order. The peripheral side walls of the first partition plate 231, the reversing plate 235 and the second partition plate 233 are fixedly connected with the inner side wall of the air duct 2; the section of the reversing plate 235 is fan-shaped, a plurality of first partition plates 231 and a plurality of second partition plates 233 are arranged, the plurality of first partition plates 231 are inclined towards one side far away from the first filter screen 221, each first partition plate 231 is provided with a first through hole 232, one side of the reversing plate 235 close to the first partition plate 231 is provided with a third through hole 236, and the third through holes 236 and the plurality of first through holes 232 are inclined downwards and arranged in a collinear manner; the second partition plates 233 are inclined towards one side close to the first filter screen 221, each second partition plate 233 is provided with a second through hole 234, one side of the reversing plate 235 close to the second partition plates 233 is provided with a fourth through hole 237, and the fourth through holes 237 and the second through holes 234 are inclined upwards and arranged in a collinear manner; the third through hole 236 communicates with the fourth through hole 237.

The airflow firstly passes through the first partition plates 231, the first partition plates 231 block the airflow to reduce the flow velocity of the airflow, and the airflow after speed reduction passes through the first through hole 232, the third through hole 236 and the fourth through hole 237 in sequence, is blocked by the second partition plate 233 and is then discharged through the second through hole 234, so that the noise of the airflow is reduced.

The filter mechanism 22 further includes a second filter 222, the second filter 222 is vertically mounted on the inner side wall of the air duct 2 through a bolt, and the second filter 222 is mounted between the buffer mechanism 23 and the silencing mechanism 24. The second filter 222 filters the airflow again, so that dust in the airflow can be reduced from entering the silencing mechanism 24.

A second opening 263 is formed in the outer side wall of the air duct 2 between the buffer mechanism 23 and the second filter screen 222, the cross section of the second opening 263 is arc-shaped, a second cover 264 is arranged on the second opening 263, one end of the second cover 264 is hinged to the wall of the air duct 2 at one end of the second opening 263, and the other end of the second cover 264 is connected to the wall of the air duct 2 at the other end of the second opening 263 through a bolt. By providing the second opening 263, dust on the second filter 222 can be cleaned regularly, and replacement of the damaged second filter 222 is facilitated.

The silencing mechanism 24 includes a silencer 241 mounted on one side of the air outlet 25 through a mounting plate 243, a set of silencing pieces 242 are horizontally arranged in the silencer 241, the plurality of silencing pieces 242 are sequentially arranged from top to bottom, the silencing pieces 242 are made of silencing material, and one end of the silencing piece 242 close to the air inlet 21 is arc-shaped.

When the airflow reaches the arc-shaped end faces of the noise-reduction sheets 242, the airflow is divided into more than two airflows, so that the airflow is guided to the side walls of the two adjacent noise-reduction sheets 242, the sound of the airflow can be well absorbed, and the noise generated in the working process of the fan is reduced.

The implementation principle of the fan casing with noise reduction function of the embodiment of the application is as follows: the airflow is discharged from the air outlet 12 of the fan, enters the air duct 2 through the air inlet 21, is primarily filtered through the first filter screen 221, and then enters the buffer mechanism 23, and the flow rate of the airflow is reduced under the action of the buffer mechanism 23; then, the air flow is filtered again by the second filter screen 222 to remove dust, and then enters the silencing mechanism 24, when the air flow reaches the arc-shaped end surface of the silencing sheet 242, the air flow is divided into more than two air flows, so that the air flow is guided to the two adjacent silencing sheets 242, the sound of the air flow can be well absorbed, and the noise generated in the working process of the fan is further reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a fan casing with function of making an uproar is fallen, includes shell body (1), fan air intake (11) and fan air outlet (12), its characterized in that: an air duct (2) is mounted at the air outlet (12) of the fan, and an air inlet (21), a filtering mechanism (22), a buffering mechanism (23), a silencing mechanism (24) and an air outlet (25) are sequentially arranged in the air duct (2); the silencing mechanism (24) comprises a silencer (241) arranged on one side of the air outlet (25), a group of silencing pieces (242) are arranged in the silencer (241), and one end, close to the air inlet (21), of each silencing piece (242) is arc-shaped.

2. A fan casing with noise reduction function according to claim 1, characterized in that: buffer gear (23) include first baffle (231) that a plurality of intervals set up, and is a plurality of first baffle (231) all set up to the lopsidedness that is close to amortization mechanism (24), and is a plurality of first through-hole (232), a plurality of all seted up on first baffle (231) first through-hole (232) collineation sets up.

3. A fan casing with noise reduction function according to claim 2, characterized in that: buffer gear (23) still include second baffle (233) that a plurality of intervals set up, and is a plurality of second baffle (233) all sets up to the one side slope of keeping away from noise cancelling structure (24), and is a plurality of second through-hole (234) have all been seted up on second baffle (233), and is a plurality of second through-hole (234) collineation sets up.

4. A fan housing with noise reduction as set forth in claim 3, wherein: a reversing plate (235) is arranged between the first partition plate (231) and the second partition plate (233), one end, close to the first partition plate (231), of the reversing plate (235) is provided with a third through hole (236) which is obliquely arranged, and the third through hole (236) is collinear with the first through hole (232); one end of the reversing plate (235) close to the second partition plate (233) is provided with a fourth through hole (237) which is obliquely arranged, and the fourth through hole (237) is collinear with the second through hole (234); the third through hole (236) communicates with the fourth through hole (237).

5. A fan casing with noise reduction function according to claim 1, characterized in that: the filter mechanism (22) comprises a first filter screen (221), the first filter screen (221) is vertically fixedly connected to the inner side wall of the air duct (2), and the first filter screen (221) is installed between the air inlet (21) and the buffer mechanism (23).

6. A fan casing with noise reduction function according to claim 5, characterized in that: the outer side wall of the air duct (2) between the first filter screen (221) and the buffer mechanism (23) is provided with a first opening (261), the first opening (261) is provided with a first cover body (262), one end of the first cover body (262) is hinged to the wall of the air duct (2) at one end of the first opening (261), and the other end of the first cover body (262) is connected with the wall of the air duct (2) at the other end of the first opening (261) through a bolt.

7. A fan casing with noise reduction function according to claim 1, characterized in that: the filtering mechanism (22) further comprises a second filter screen (222), the second filter screen (222) is vertically arranged on the inner side wall of the air duct (2), and the second filter screen (222) is arranged between the buffering mechanism (23) and the silencing mechanism (24).

8. A fan casing with noise reduction function according to claim 1, characterized in that: a second opening (263) is formed in the outer side wall of the air duct (2) between the buffer mechanism (23) and the second filter screen (222), a second cover body (264) is arranged on the second opening (263), one end of the second cover body (264) is hinged to the wall of the air duct (2) at one end of the second opening (263), and the other end of the second cover body (264) is connected with the wall of the air duct (2) at the other end of the second opening (263) through a bolt.

9. A fan casing with noise reduction function according to claim 1, characterized in that: the air outlet (25) is in threaded connection with a sealing cover (265).