CN216048298U

CN216048298U - Cylindrical array type silencer

Info

Publication number: CN216048298U
Application number: CN202122577843.6U
Authority: CN
Inventors: 叶贵鑫
Original assignee: Fujian Dianzhu Environmental Protection Engineering Co ltd
Current assignee: Fujian Dianzhu Environmental Protection Engineering Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-15
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a cylindrical array type silencer which comprises a closed box body made of silencing materials, wherein the box body is provided with an air inlet and an air outlet, an included angle is formed between the air inlet and the air outlet, a plurality of cylindrical sound absorbers made of the silencing materials are fixedly connected in the box body, the upper end and the lower end of each sound absorber are respectively connected to the inner top surface and the inner bottom surface of the box body, the air inlet and the air outlet are positioned on the peripheral side wall of the box body, and the air inlet and the air outlet are positioned on different peripheral side walls of the box body. The device can solve the defects of insufficient silencing quantity, weak low-frequency processing capacity and the like of the existing common silencing elbow or sheet type silencer, and more efficiently reduces the interference of the air conditioner group to places such as hotels, offices and the like.

Description

Cylindrical array type silencer

Technical Field

The utility model relates to the field of silencing equipment, in particular to a cylindrical array type silencer.

Background

In recent years, air conditioning units are widely applied to places such as hotels, office buildings and the like, most machine rooms are close to sensitive areas, and the equipment is low in noise frequency, weak in attenuation, strong in interference and wide in radiation range, and causes serious influence on related personnel. The conventional heating and ventilation design is only provided with the conventional common silencing elbow or the sheet type silencer, has the defects of insufficient silencing quantity, weak low-frequency processing capacity and the like, and generates serious interference on hotels and office places. With the improvement of the requirements of people on living quality, high efficiency and low noise become the trend of application and development of combined air conditioning units. Therefore, a new muffler needs to be developed.

Disclosure of Invention

In view of the above, there is a need to provide a cylindrical array type muffler capable of solving the disadvantages of insufficient muffling amount and weak low-frequency processing capability of the conventional common muffling elbow or sheet type muffler, and more efficiently reducing the interference of an air conditioner set to places such as hotels and offices.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a cylinder array silencer, includes an inclosed box of making by noise-abatement material, the box has air intake and air outlet, there is the contained angle between air intake and the air outlet, a plurality of cylindrical sound absorbers of making by noise-abatement material of fixedly connected with in the box, top surface and interior bottom surface in the box are connected respectively to the sound absorber upper and lower ends, air intake and air outlet are located the week lateral wall of box, and air intake and air outlet are located the different week lateral walls of box.

Furthermore, the box body is composed of an outer plate made of a galvanized plate after bending, an inner plate made of a perforated aluminum plate and glass wool filled between the outer plate and the inner plate.

Furthermore, the glass wool is wrapped with sound absorption glass wool cloth and a PVF waterproof sound-transmitting film.

Furthermore, the sound absorber is composed of an outer cylinder body which is composed of a perforated aluminum plate and glass wool which is filled in the outer cylinder body.

Further, a light keel for supporting the glass wool is arranged in the outer cylinder body.

Further, the thickness of the galvanized plate is 1.2 mm; the thickness of the perforated aluminum plate is 1.0mm, the aperture is 2mm, and the perforation rate is 20%.

Further, the glass wool is 48K Ohwenikoning glass wool.

Compared with the prior art, the utility model has the following beneficial effects: the reactive silencing sections at the front end and the rear end of the silencer enable sound waves of certain specific frequency bands transmitted along a pipeline to generate sound interference or reflect the sound to a sound source, so that the aim of silencing is fulfilled, and the part has good medium-low frequency silencing performance. The middle cylindrical array prevents airflow from directly passing through, so that direct sound is avoided, the sound absorption area is increased, and the absorption of high-frequency noise is enhanced. The total noise elimination amount reaches more than 25dB (A), and the noise elimination effect of each frequency band is better.

In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a graph showing a reduction of the front and rear noise spectra according to an embodiment of the present invention.

In the figure: 1-box body, 11-air inlet, 12-air outlet, 13-outer plate, 14-glass wool of box body, 15-inner plate, 2-sound absorber, 21-outer cylinder, 22-glass wool of sound absorber, and 3-machine room.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1, the cylindrical array type silencer is installed in a machine room 3 and is in butt joint with an air conditioner main unit.

The noise-reducing air conditioner comprises a closed box body 1 made of noise-reducing materials, wherein the box body 1 is provided with an air inlet 11 and an air outlet 12, the air inlet 11 and the air outlet 12 are located on the peripheral side walls of the box body, the air inlet 11 and the air outlet 12 are located on different peripheral side walls of the box body, so that an included angle exists between the air inlet 11 and the air outlet 12, in the embodiment, the box body 1 is cuboid, the air inlet 11 and the air outlet 12 are respectively located on two adjacent peripheral side walls, and the included angle between the two peripheral side walls is 90 degrees.

The box body 1 consists of an outer plate 13 which is made by bending a galvanized plate with the thickness of 1.2mm, an inner plate 15 which consists of a perforated aluminum plate and glass wool 14 which is filled between the outer plate 13 and the inner plate 15; the glass wool 15 is wrapped with sound absorption glass fiber cloth and PVF waterproof sound-transmitting film. The thickness of the perforated aluminum plate was 1.0mm, the hole diameter was 2mm, and the perforation rate was 20%. The glass wool 15 is 48K owens cunnings glass wool.

The outer plate 13 and the inner plate 15 of the box body 1 are reinforced and assembled through connecting pieces such as screw corner connectors.

A plurality of cylindrical sound absorbers 2 made of sound-absorbing materials are fixedly connected in the box body 1, and the upper end and the lower end of each sound absorber 2 are respectively connected to the inner top surface and the inner bottom surface of the box body 1. The sound absorber 2 is composed of an outer cylinder 21 made of a perforated aluminum plate and glass wool 22 filled in the outer cylinder. The glass wool 22 is wrapped with sound absorption glass wool cloth and a PVF waterproof sound-transmitting film to prevent the glass wool from volatilizing. The thickness of the perforated aluminum plate was 1.0mm, the hole diameter was 2mm, and the perforation rate was 20%. The glass wool 22 is 48K owens cunnings glass wool.

In this embodiment, the outer cylinder 21 has a light keel therein for supporting the glass wool 22.

The reactive silencing sections at the front end and the rear end of the silencer enable sound waves of certain specific frequency bands transmitted along the pipeline to generate sound interference or reflect the sound back to a sound source, so that the aim of silencing is achieved, and the part has good medium-low frequency silencing performance. The middle cylindrical array prevents airflow from directly passing through, so that direct sound is avoided, the sound absorption area is increased, and the absorption of high-frequency noise is enhanced. The noise spectrum before and after use of the device is folded as shown in fig. 2.

In addition, the sound absorber with the large diameter has better medium-low frequency noise elimination performance, and the sound absorber with the small diameter has better high-frequency noise elimination performance; therefore, according to the actual situation of field measurement, the sound absorber with the proper outer diameter size is installed in the box body.

Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the utility model is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalents and alternatives falling within the spirit and scope of the utility model.

Claims

1. A cylinder array silencer which characterized in that: including an inclosed box of making by noise elimination material, the box has air intake and air outlet, there is the contained angle between air intake and the air outlet, a plurality of cylindrical sound absorbers of making by noise elimination material of fixedly connected with in the box, top surface and interior bottom surface in the box are connected respectively to the lower extreme on the sound absorber, air intake and air outlet are located the week lateral wall of box, and air intake and air outlet are located the different week lateral walls of box.

2. The cylindrical array muffler of claim 1, wherein: the box body is composed of an outer plate made of a galvanized plate after bending, an inner plate made of a perforated aluminum plate and glass wool filled between the outer plate and the inner plate.

3. The cylindrical array muffler of claim 2, wherein: and the glass wool is wrapped with sound absorption glass wool cloth and a PVF waterproof sound-transmitting film.

4. The cylindrical array muffler of claim 2, wherein: the sound absorber is composed of an outer cylinder body and glass wool, wherein the outer cylinder body is composed of perforated aluminum plates, and the glass wool is filled in the outer cylinder body.

5. The cylindrical array muffler of claim 4, wherein: and the glass wool is wrapped with sound absorption glass wool cloth and a PVF waterproof sound-transmitting film.

6. The cylindrical array muffler of claim 4, wherein: the outer cylinder body is internally provided with a light keel for supporting glass wool.

7. The cylinder array muffler according to claim 2 or 4, wherein: the thickness of the galvanized plate is 1.2 mm; the thickness of the perforated aluminum plate is 1.0mm, the aperture is 2mm, and the perforation rate is 20%.

8. The cylinder array muffler according to claim 2 or 4, wherein: the glass wool is 48K Ohweni Kening glass wool.