CN218118140U

CN218118140U - Direct current fan noise reduction device

Info

Publication number: CN218118140U
Application number: CN202222058844.4U
Authority: CN
Inventors: 王景; 谭娟; 袁成玲; 张俊; 徐爱丽
Original assignee: Wuhan Keqi Electronics Co ltd
Current assignee: Wuhan Keqi Electronics Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-12-23
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a direct current fan noise reduction device, which comprises a shell and a noise reduction mechanism, wherein the noise reduction mechanism is arranged inside the shell, sound absorption sponge in the noise reduction mechanism is arranged on the inner wall of the shell, and the noise reduction mechanism also comprises a polyester fiber sound absorption plate, a damping sound insulation felt, a support rod, a spring, an outer sleeve and a silencer; the utility model discloses a setting of mechanism of making an uproar falls, can make it possess the good function of noise reduction effect, not only can play the sound insulation processing of inhaling of parcel formula, and carry out secondary treatment once more in air-out department, and install to carrying out the cubic vibration reduction and fall the work of making an uproar in the below, utilize and inhale the sound sponge, polyester fiber abatvoix and damping sound deadening felt can be used to inhale sound and sound insulation work to its inside produced noise, through filtering mechanism's setting, can make it possess filterable function, so that carry out the filter work to the combustion gas, in order to guarantee that inside or outside combustion gas is the clean gas after handling.

Description

Direct current fan noise reduction device

Technical Field

The utility model relates to a direct current fan technical field specifically is a device of making an uproar falls in direct current fan.

Background

The direct current fan is characterized in that the direct current motor is selected and matched, a direct current brushless motor is mostly adopted in the direct current fan at present, and the brushless direct current motor saves a collecting ring and an electric brush for excitation, so that the structure is greatly simplified, the manufacturability of the motor is improved, the mechanical reliability of the motor in operation is greatly enhanced, and the service life is prolonged. However, the existing direct current fan needs to be subjected to noise reduction during working, and the existing treatment mode adopts single sound absorption cotton to perform noise reduction treatment, so that the treatment mode is single, and the treatment effect is not ideal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of making an uproar falls in direct current fan possesses the good function of noise reduction effect, not only can play the sound of inhaling of parcel formula and give sound insulation and handle, carries out secondary treatment once more in air-out department moreover to at the below installation to carrying out the cubic and falling the work of making an uproar, improved the problem that holistic treatment effect proposed in order to solve above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a noise reduction device of a direct current fan comprises a shell and a noise reduction mechanism, wherein the noise reduction mechanism is arranged inside the shell, and a sound absorption sponge in the noise reduction mechanism is arranged on the inner wall of the shell;

the noise reduction mechanism is characterized by further comprising a polyester fiber acoustic board, a damping sound-proof felt, a support rod, a spring, an outer sleeve and a silencer, wherein the polyester fiber acoustic board is arranged inside the shell, the damping sound-proof felt is arranged on the inner wall of the polyester fiber acoustic board, the support rod is arranged around the bottom of the shell respectively, the spring, the outer sleeve is located on the lower portion of the surface of the support rod, the spring is arranged at the bottom of the inner cavity of the outer sleeve, and the silencer is arranged at one end of the shell.

Preferably, the front side and the rear side of the top of the polyester fiber sound-absorbing board and the front part and the rear part of the two sides are respectively provided with a supporting block, and one end of each supporting block is bolted to the inner wall of the shell.

Preferably, the bottom of shell is installed the fagging, the bottom of fagging and the one end installation of branch.

Preferably, a pressing plate is installed at one end of the supporting rod, and the bottom of the pressing plate is installed at one end of the spring.

Preferably, a damper is installed at the bottom of the pressure plate, the damper is located inside the spring, and one end of the damper is installed at the bottom of the inner cavity of the outer sleeve.

Preferably, the other end of shell is provided with filtering mechanism, filtering mechanism is including installation shell, air cleaner, connecting pipe, HEPA filter plate, photocatalyst filter screen, active carbon filter screen and bamboo fiber filter screen.

Preferably, the mounting shell is arranged at one end of the shell, and the air filter is arranged at one end of the inner cavity of the mounting shell.

Preferably, the connecting pipe is installed in the inner cavity of the installation shell, and the HEPA filter paper plate is installed inside the connecting pipe.

Preferably, the photocatalyst filter screen is installed in the inside of connecting pipe, the inside in connecting pipe is all installed with bamboo fibre filter screen to the active carbon filter screen.

Preferably, the organism is installed in the housing, the installation shell is connected with the housing through a flange, and the silencer is connected with the housing through a flange.

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

1. the utility model discloses a setting of mechanism of making an uproar falls, can make it possess the good function of noise reduction effect, not only can play the sound insulation processing of inhaling of parcel formula, and carry out secondary treatment once more in air-out department, and install to carrying out the cubic at the below and fall and shake the work of making an uproar, holistic treatment effect has been improved, utilize and inhale the sound sponge, polyester fiber abatvoix and damping deadening felt can be used to inhale sound and sound insulation work to its inside noise of producing, and branch, spring and outer tube then are used for the noise reduction processing that makes an uproar to its vibration produced noise, carry out the wind sound amortization processing work to the play of its air-out by the muffler at last.

2. The utility model discloses through filtering mechanism's setting, can make it possess filterable function to in order to carry out filtering work to the combustion gas, in order to guarantee that inside or outside combustion gas is the clean gas after handling, thereby avoid endangering people's health, utilize air cleaner to handle filtration treatment, then carry out filtration treatment work in proper order by HEPA filter plate, photocatalyst filter screen, active carbon filter screen and bamboo fiber filter screen, thereby improve filterable effect.

Drawings

FIG. 1 is a schematic view of the present invention;

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

FIG. 3 is a schematic view of the structure of the photocatalyst filtering net of the present invention;

fig. 4 is a schematic view of the mounting case structure of the present invention.

In the figure: 1. a housing; 2. a noise reduction mechanism; 21. sound-absorbing sponge; 22. a polyester fiber acoustic panel; 23. damping deadening felts; 24. a strut; 25. a spring; 26. an outer sleeve; 27. a muffler; 3. a filtering mechanism; 31. mounting a shell; 32. an air filter; 33. a connecting pipe; 34. a HEPA filter paper board; 35. a photocatalyst filter screen; 36. an active carbon filter screen; 37. a bamboo fiber filter screen; 4. a body.

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 work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the utility model provides a dc fan noise reduction device, which comprises a housing 1 and a noise reduction mechanism 2, wherein the noise reduction mechanism 2 is arranged inside the housing 1, a sound absorption sponge 21 in the noise reduction mechanism 2 is arranged on the inner wall of the housing 1, and the sound absorption sponge 21 is used for absorbing sound;

it should be noted that, as shown in fig. 1, 2 and 3, the noise reduction mechanism 2 further includes a polyester fiber sound absorption board 22, a damping sound insulation felt 23, a support rod 24, a spring 25, an outer sleeve 26 and a silencer 27, the polyester fiber sound absorption board 22 is disposed inside the housing 1, the damping sound insulation felt 23 is mounted on the inner wall of the polyester fiber sound absorption board 22, the polyester fiber sound absorption board 22 is used to cooperate with the sound absorption sponge 21 to achieve dual sound absorption, and the damping sound insulation felt 23 performs sound insulation;

the support rods 24 are respectively arranged on the periphery of the bottom of the shell 1, the spring 25 and the outer sleeve 26 are located on the lower portion of the surface of the support rods 24, the spring 25 is installed at the bottom of the inner cavity of the outer sleeve 26, the silencer 27 is arranged at one end of the shell 1, the support rods 24 are used for vibrating, pressing down the spring 25, then the spring 25 and the damper are matched with the silencer to conduct noise reduction and vibration reduction work, and finally the silencer 27 conducts silencing treatment work on air outlet positions of the silencer.

The muffler 27 is a noise reduction device such as a pipe and an elbow with a sound absorbing liner or a pipe with a suddenly changed cross-sectional area and other discontinuous acoustic impedances, which can attenuate or reflect noise in the pipe for a gas flow pipe having noise propagation, and is called a resistive muffler, a reactive muffler, or a resistive composite muffler.

Further, the polyester fiber sound-absorbing board 22 is a polyester fiber sound-absorbing board, also called glass wool, and is a material with sound-absorbing function, which is made of polyester fiber as a raw material by hot press molding. The high-frequency noise-reducing sealing ring is generally used for reducing noise in engineering such as automobile engines and engineering motor sealing to relieve noise, and has a good effect of relieving high-frequency high-decibel noise.

The damping sound-proof felt 23 uses high-purity fine iron powder as a raw material, applies the latest damping sound-proof technology, develops and develops sound-proof materials aiming at floors, walls and pipelines, can effectively isolate external noise, and creates a safe, quiet and comfortable environment.

The sound-absorbing sponge 21 is made of melamine foam, and has unique comprehensive properties of sound absorption, heat insulation, flame retardance, high temperature resistance, water absorption, light weight and the like. The material is widely used in the fields of building decoration, traffic vehicles, water ships, aerospace, electromechanical equipment, industrial sound absorption and heat preservation and the like.

In addition, as shown in fig. 2, the front and rear sides and the front and rear parts of the both sides of the top of the polyester fiber sound-absorbing plate 22 are provided with support blocks, one end of each support block is bolted to the inner wall of the housing 1, and the polyester fiber sound-absorbing plate 22 is conveniently mounted and supported by the support blocks.

In addition, as shown in fig. 2, a bracing plate is mounted at the bottom of the shell 1, and the bottom of the bracing plate is mounted at one end of the strut 24, so that the bracing plate is used for supporting the shell 1.

In addition, as shown in fig. 2, a pressing plate is installed at one end of the strut 24, and the bottom of the pressing plate is installed at one end of the spring 25, so that the spring 25 and the damper are easily connected and pressed by the pressing plate.

In addition, as shown in fig. 2, a damper is installed at the bottom of the pressure plate, the damper is located inside the spring 25, one end of the damper is installed at the bottom of the inner cavity of the outer sleeve 26, and the damper is convenient to cooperate with the spring 25 to perform vibration reduction work so as to ensure stable operation of the spring.

Preferably, as shown in fig. 1, 3 and 4, the other end of the housing 1 is provided with a filtering mechanism 3, and the filtering mechanism 3 includes a mounting case 31, an air filter 32, a connection pipe 33, a HEPA filter paper 34, a photocatalyst screen 35, an activated carbon screen 36 and a bamboo fiber screen 37.

In addition, as shown in fig. 1, 3 and 4, a mounting case 31 is provided at one end of the housing 1, an air filter 32 is mounted at one end of an inner cavity of the mounting case 31, the mounting case 31 is used to facilitate connection of components therein, and the air filter 32 can be used to perform a primary filtering function.

In addition, as shown in fig. 1, 3 and 4, a connection pipe 33 is installed in the inner cavity of the installation case 31, and a HEPA filter sheet 34 is installed inside the connection pipe 33, and the HEPA filter sheet 34 can be used for a secondary filtering process.

As shown in fig. 3 and 4, the photocatalyst screen 35 is installed inside the connection pipe 33, the activated carbon screen 36 and the bamboo fiber screen 37 are installed inside the connection pipe 33, and the photocatalyst screen 35, the activated carbon screen 36 and the bamboo fiber screen 37 are used to perform a layer-by-layer filtering process, thereby improving the filtering effect.

As shown in fig. 1, the body 4 is mounted inside the housing 1, the mounting shell 31 and the housing 1 are connected by flanges, and the muffler 27 and the housing 1 are connected by flanges, so that the mounting and dismounting work is facilitated by the flanges.

The photocatalyst filter screen 35 is formed by mixing nanoscale powder and various nanoscale photosensitive semiconductor media in a lattice manner to ensure sufficient air permeability and contact, and then mixing the nanoscale powder with a carrier, can effectively remove harmful gases and peculiar smells such as carbon monoxide, nitric oxide, hydrocarbon, aldehydes, benzene and the like in the air, can decompose the harmful gases into harmless CO2 and H2O, and has a sterilization function.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device of making an uproar falls in direct current fan, includes shell (1) and falls the mechanism of making an uproar (2), its characterized in that: the noise reduction mechanism (2) is arranged inside the shell (1), and a sound absorption sponge (21) in the noise reduction mechanism (2) is arranged on the inner wall of the shell (1);

noise reduction mechanism (2) are still including polyester fiber abatvoix (22), damping deadening felt (23), branch (24), spring (25), outer tube (26) and muffler (27), polyester fiber abatvoix (22) set up in the inside of shell (1), the inner wall in polyester fiber abatvoix (22) is installed in damping deadening felt (23), branch (24) set up respectively around shell (1) bottom, spring (25), outer tube (26) are located the lower part on branch (24) surface, the bottom in outer tube (26) inner chamber is installed in spring (25), muffler (27) set up in the one end of shell (1).

2. The direct current fan noise reduction device according to claim 1, wherein: supporting blocks are arranged on the front side and the rear side of the top of the polyester fiber sound-absorbing board (22) and on the front side and the rear side of the top of the polyester fiber sound-absorbing board, and one end of each supporting block is bolted to the inner wall of the shell (1).

3. The direct current fan noise reduction device according to claim 1, wherein: the bottom of shell (1) is installed the fagging, the bottom of fagging and the one end installation of branch (24).

4. The direct current fan noise reduction device according to claim 1, wherein: and a pressing plate is installed at one end of the supporting rod (24), and the bottom of the pressing plate is installed at one end of the spring (25).

5. The direct current fan noise reduction device according to claim 4, wherein: the bottom of clamp plate is installed the attenuator, the attenuator is located the inside of spring (25), the one end of attenuator and the bottom installation of outer tube (26) inner chamber.

6. The direct current fan noise reduction device according to claim 1, wherein: the other end of shell (1) is provided with filtering mechanism (3), filtering mechanism (3) are including installation shell (31), air cleaner (32), connecting pipe (33), HEPA filter plate (34), photocatalyst filter screen (35), active carbon filter screen (36) and bamboo fiber filter screen (37).

7. The direct current fan noise reduction device of claim 6, wherein: the installation shell (31) is arranged at one end of the shell (1), and the air filter (32) is arranged at one end of the inner cavity of the installation shell (31).

8. The direct current fan noise reduction device according to claim 7, wherein: the connecting pipe (33) is installed in the inner cavity of the installation shell (31), and the HEPA filter plate (34) is installed inside the connecting pipe (33).

9. The direct current fan noise reduction device according to claim 8, wherein: photocatalyst filter screen (35) are installed in the inside of connecting pipe (33), activated carbon filter screen (36) and bamboo fiber filter screen (37) all install in the inside of connecting pipe (33).

10. The direct current fan noise reduction apparatus according to claim 9, wherein: an organism (4) is arranged in the shell (1), the installation shell (31) is connected with the shell (1) through a flange, and the silencer (27) is connected with the shell (1) through a flange.