CN210106257U

CN210106257U - Noise reduction device of silencer for matrix type fan of air conditioning unit

Info

Publication number: CN210106257U
Application number: CN201920565831.1U
Authority: CN
Inventors: 谭志华; 孙海东; 叶传新
Original assignee: SHENZHEN ZHONGYA MECHANIC & ELECTRIC INDUSTRY Co Ltd
Current assignee: SHENZHEN ZHONGYA MECHANIC & ELECTRIC INDUSTRY Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-02-21
Anticipated expiration: 2029-04-24

Abstract

The utility model provides a silencer noise reduction device for air conditioning unit matrix fan that simple structure, easy dismounting, easily transportation and installation and noise reduction effect are good. The air supply device is a fan wall formed by vertically arranging a plurality of independently arranged fans in a matrix mode, and the outer side and the inner side of the fan wall are respectively provided with an outer silencing device and an inner silencing device which are formed by array type silencers; the single silencer in the outer silencer and the inner silencer is opposite to one fan in the fan wall and is arranged coaxially. The noise component contained in the air flow sent into the machine room can be greatly reduced, so that the omnidirectional noise is reduced, and a mute air conditioning unit is constructed. According to the requirements of pressure loss and noise reduction, the pressure loss and noise reduction are improved or reduced by increasing or decreasing the noise elimination core body and the transition section of the noise eliminator. The silencer has good silencing effect and compact structure, and saves the manufacturing, transporting and installing costs of the silencer.

Description

Noise reduction device of silencer for matrix type fan of air conditioning unit

Technical Field

The utility model relates to a silencer device, more specifically say so and relate to an air conditioning unit fan silencer matrix noise reduction device.

Background

The modern information technology industry generally has buildings with high requirements for use, such as machine rooms or the like, i.e. with high requirements for the temperature and humidity of the air in these buildings. Generally, the indoor temperature is adjusted by an air conditioning system, the humidity is realized by a humidifying device, and air with the adjusted temperature and humidity is sent into a room through a fan, but the fan is a main source of noise pollution. In the prior art, a matrix arrangement mode is generally adopted for the purpose of centralized air supply of the machine room fans, and the defects that air supply noise entering the machine room is large are overcome.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a simple structure, easy dismounting, easily transportation and installation and noise reduction effect are good the silencer of making an uproar falls for air conditioning unit matrix fan.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a device of making an uproar falls in silencer for air conditioning unit matrix fan, include the air supply arrangement who sends outdoor fresh air into computer lab, its characterized in that: the air supply device is a fan wall formed by vertically arranging a plurality of independently arranged fans in a matrix mode, and an outer sound eliminator and an inner sound eliminator which are formed by array type silencers are respectively arranged on the outer side and the inner side of the fan wall; the number of the silencers in the outer silencer and the inner silencer is the same and the silencers in the inner silencer are in one-to-one correspondence, wherein each silencer is opposite to one fan in the fan wall and is coaxially arranged.

And a filtering section for filtering air, a surface cooling section/heating section for cooling or heating air and a wet film section for improving air humidity are sequentially arranged between the mixing section and the outer silencing device.

The outer silencing device and the fan wall are arranged separately.

The outer noise eliminator is connected with the fan wall through a flange or through a flexible sleeve, wherein each fan in the fan wall is correspondingly connected with the inner side of a corresponding silencer in the outer noise eliminator.

Every silencer in the array silencer comprises a hollow cylindrical sound absorption shell and a sound absorption core body arranged on the inner wall of the sound absorption shell, or every silencer comprises a hollow cylindrical sound absorption shell and a sound absorption body arranged in the sound absorption shell, the sound absorption body comprises a flow guide cover and a sound absorption section, and the flow guide cover is arranged at two ends of the sound absorption section.

The outer contour of the section of the sound absorption shell is square, and the section of the inner hole of the sound absorption shell is square, round or other regular polygons; correspondingly, the section shape of the sound absorber is the same as that of the inner hole of the sound absorption shell.

The air inlet of the sound absorption shell of each silencer in the array silencer is a transition section for adjusting pressure loss and sound absorption quantity, and the shape of the transition section is a horn mouth with a large outside and a small inside.

Compared with the prior art, the utility model discloses a device of making an uproar falls adds array silencer in the inside and outside both sides of fan wall, makes the noise component greatly reduced who contains in the air current of sending into the computer lab to reduce the omnidirectional noise, found silence air conditioning unit. Meanwhile, the temperature of air entering the outer noise elimination device can be effectively adjusted through the temperature-adjusting air supply outlet and the air return inlet. According to the requirements of pressure loss and noise reduction, the pressure loss and noise reduction are improved or reduced by increasing or decreasing the noise elimination core body and the transition section of the noise eliminator. According to the requirements of an installation site, steel plate connection, flexible connection, flange connection or independent installation of a fan unit and a silencer matrix are adopted, so that the noise reduction device is greatly convenient to install. The silencer has good silencing effect and compact structure, and saves the manufacturing, transporting and installing costs of the silencer.

Drawings

Fig. 1 is an application scene diagram of the utility model in the air conditioning unit of the machine room.

Fig. 2a is a schematic view of different sectional shapes (in the case of a sound absorber) of the array type muffler of fig. 1.

Fig. 2b is a schematic view of different sectional shapes of the array type muffler of fig. 1 (without the sound absorber).

Fig. 3a is a schematic longitudinal cross-sectional view of a single muffler of the array muffler of fig. 2.

Fig. 3b is a second schematic longitudinal cross-sectional view of a single muffler of the array muffler of fig. 2.

Fig. 3c is a third schematic longitudinal cross-sectional view of a single muffler of the array muffler of fig. 2.

Fig. 4a is one of schematic views of a connection structure of the outer muffler device and the fan wall in fig. 1.

Fig. 4b is a second schematic view of the connection structure of the outer muffler device and the fan wall in fig. 1.

Fig. 4c is a third schematic view of the connection structure of the outer muffler device and the fan wall in fig. 1.

Fig. 5 is a schematic view of the fan wall of fig. 1.

The reference numbers are as follows:

the air conditioner comprises a shell 1, an air return inlet 11, a temperature-adjusting air supply outlet 12, an air mixing section 2, a filtering section 3, a wet film section 4, an outer silencing device 5, a fan wall 6, a fan 61, an inner silencing device 7, a silencer 8, a sound-absorbing shell 81, a sound absorber 82, a flow guide cover 83, a sound-absorbing section 84, a transition section 85 and a surface cooling section/heating section 9.

Detailed Description

As shown in fig. 1, the utility model discloses a fan wall 6 that is used for silencer noise reduction device of air conditioning unit matrix fan to comprise the casing 1 of device, a plurality of array silencer 8 of setting in casing 1 and constitute by a plurality of fan 61.

1. Housing 1

The air conditioner is a hollow rectangular body, the inner end surface and the outer end surface of the shell 1 are open, the outer end surface is arranged in an outdoor environment, and the inner end surface is connected with a machine room with certain requirements on humidity, temperature, noise and dust grade.

Fresh air from outside enters the machine room through the housing 1 by the fan wall 6.

2. Fan wall 6

The fan is formed by arranging a plurality of fans 61 in parallel on a vertical plane, wherein air inlets of all the fans 61 face outwards, and air outlets face inwards (see fig. 5).

3. Array type silencer 8

The silencer comprises a matrix type silencer 8, an external silencer 5 and an internal silencer 7.

1) Outer muffler device 5

The outer muffler 5 is disposed outside the fan wall 6 and serves to absorb noise transmitted into the housing 1 with the outdoor environment and noise generated by the air flow. Wherein each muffler 8 of the outer muffler device 5 is arranged coaxially and opposite to one fan 61 of said fan wall 6.

The silencer 8 and the corresponding single fan 61 in the fan wall 6 can be separately and independently arranged (see fig. 4 b), or can be connected together through a connecting part, so that the outer silencer device and the fan wall 6 are in seamless connection (the seamless connection has the advantages of reducing air sound leakage and leading fan noise and air flow noise to be transmitted into the silencer along the connection, thereby improving the silencing effect, reducing pressure loss and preventing heat loss caused by air leakage), and the seamless connection can be a flange (namely, a flange connecting part is arranged between the single silencer 8 and the corresponding single fan 61) (see fig. 4 a); and soft sleeves (such as rubber soft connection using a hollow joint or a connecting pipe) can be connected together (see fig. 4 c), so that the damping and noise reduction effects are good compared with those of a metal joint.

2) Inner muffler device 7

The inner muffler 7 is placed inside the fan wall 6 for absorbing the noise generated by the fan wall 6 and the air flow. Wherein, each silencer 8 in the inner silencing device 7 is opposite to one fan 61 in the fan wall 6 and is coaxially arranged, and the number of the silencers 8 in the outer silencing device 5 is equal to the number of the silencers 8 in the inner silencing device 7 and the number of the fans in the fan wall 6.

The structure can make the air flow entering the machine room through the internal silencer device 7 more uniform and flow field. It has no change in flow field, small volume and high noise elimination amount. The one-to-one corresponding matrix type silencer is installed, so that the air flow distribution of the fan is not changed (if a large-scale sheet type silencer is arranged on a fan wall, the original air flow field is easy to change).

3) Structure of each muffler 8

Each muffler 8 of the array type muffler 8 has the following two structures:

a. the sound absorption core is composed of a hollow cylindrical sound absorption shell 81 and a sound absorption core body arranged on the inner wall of the sound absorption shell 81 (see fig. 2 b).

b. The sound absorption device is composed of a hollow cylindrical sound absorption housing 81 and a sound absorption body 82 arranged in the sound absorption housing 81 (see fig. 2 a). The sound absorber 82 is composed of a guide housing 83 and a sound absorption section 84, and the guide housing 83 is installed at both ends of the sound absorption section 84.

In order to make the pressure loss and the muffling amount of the inlet air adjustable, the air inlet of the sound-absorbing housing 81 of each muffler 8 in the outer muffling device 5 can be set to a transition section 85 with a large outside and a small inside and in a bell mouth shape.

The outer contour of the cross section of the sound absorption housing 81 in the two structures is square, and the cross section of the inner hole is square, round or other regular polygons. Correspondingly, the cross-sectional shape of the sound absorber 82 is the same as the cross-sectional shape of the inner hole of the sound absorption housing 81 (see fig. 2a and 2 b).

When a low pressure loss is required, the muffler 8 of the above-described "a" structure is employed, which has a disadvantage of low noise reduction (see fig. 3 c).

When the pressure loss requirement is not strict (the original equipment allows a large pressure loss range and allows a device with large pressure loss to be connected), the silencer 8 with the structure of the 'b' can be adopted (see the figure 3 b).

When both low pressure loss and high sound-deadening amount are required, the above-described "b" structure can be adopted with the mufflers 8 of the outer muffling device 5 each having the transition section 85. This increases the amount of noise reduction and reduces the pressure loss (see fig. 3 a).

Note that: pressure loss, pressure loss and pressure drop for short. Which reflects the mechanical energy consumed by the fluid passing through the device. In order to ensure the performance of the original equipment, the pressure loss is reduced as much as possible (low pressure loss is required instead of low pressure). Take an example of inaccuracy: the high water pressure at 1m is 100Pa, and the water pressure at 10m after pipeline transportation is 10Pa, so that the pressure loss of the pipeline is 90Pa (100-10). Under the condition that the performance of the equipment is not changed, the pressure loss of the pipeline is reduced as much as possible in order to increase the water pressure at the position of 10 m.

4. Air return opening 11 and temperature-adjusting air supply opening 12

An air mixing section 2 is arranged between the outdoor and the outer noise eliminator 5, an air return opening 11 is arranged above the air mixing section 2, a noise reduction section is arranged between the inner noise eliminator 7 and the machine room, a temperature-adjusting air supply opening 12 is arranged above the noise reduction section, an air supply pipeline is connected between the air return opening 11 and the temperature-adjusting air supply opening 12, and partial air of the noise reduction section, the temperature of which is higher than the outdoor temperature, is sent to the mixing section through the air supply pipeline to increase the temperature of fresh air.

5. A filtration section 3, a surface cooling/heating section 9 and a wet film section 4

For filtering the outdoor air entering the housing 1, a filter stage 3 for filtering the air is provided after the mixing stage.

In order to regulate the temperature of the air entering the machine room, a surface cooling/heating section 9 is arranged after the filter section 3, which can cool or heat the air.

In order to regulate the humidity of the air entering the machine room, a wet film section 4 for increasing the humidity of the air can be arranged after the surface cooling/heating section 9.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a device of making an uproar falls in silencer for air conditioning unit matrix fan, includes the air supply arrangement who sends outdoor fresh air into computer lab, its characterized in that: the air supply device is a fan wall (6) formed by vertically arranging a plurality of independently arranged fans (61) in a matrix mode, and an outer silencing device (5) and an inner silencing device (7) formed by array silencers (8) are respectively arranged on the outer side and the inner side of the fan wall (6); the number of the mufflers (8) in the outer muffling device (5) and the number of the mufflers in the inner muffling device (7) are the same and are in one-to-one correspondence, wherein each muffler (8) is opposite to one fan (61) in the fan wall (6) and is coaxially arranged.

2. The noise reducer for the matrix fan of the air conditioning unit according to claim 1, wherein: an air mixing section (2) is arranged between the outdoor part and the outer silencing device (5), and a filtering section (3) for filtering air, a surface cooling section/heating section (9) for cooling or heating air and a wet film section (4) for improving air humidity are sequentially arranged between the air mixing section (2) and the outer silencing device (5).

3. The noise reducer for the matrix fan of the air conditioning unit according to claim 2, wherein: the outer silencing device (5) and the fan wall (6) are arranged in a separated mode.

4. The noise reducer for the matrix fan of the air conditioning unit according to claim 2, wherein: the outer noise elimination device (5) is connected with the fan wall (6) through a flange or through a flexible sleeve, wherein each fan (61) in the fan wall (6) is correspondingly connected to the inner side of a corresponding silencer (8) in the outer noise elimination device (5).

5. The noise reducer of silencer for matrix fan of air conditioning unit according to claim 3 or 4, wherein: each silencer (8) in the array type silencer (8) is composed of a hollow cylindrical sound absorption shell (81) and a sound absorption core body arranged on the inner wall of the sound absorption shell (81), or each silencer (8) is composed of a hollow cylindrical sound absorption shell (81) and a sound absorber (82) arranged in the sound absorption shell (81), each sound absorber (82) is composed of a flow guide cover (83) and a sound absorption section (84), and the flow guide covers (83) are arranged at two ends of the sound absorption section (84).

6. The noise reducer of the air conditioning unit matrix type fan as claimed in claim 5, wherein: the outer contour of the section of the sound absorption shell (81) is square, and the section of the inner hole is round or regular polygon; correspondingly, the cross section shape of the sound absorber (82) is the same as that of the inner hole of the sound absorption shell (81).

7. The noise reducer of the air conditioning unit matrix type fan as claimed in claim 6, wherein: the air inlet of the sound absorption shell (81) of each silencer (8) in the array silencer (8) is a transition section (85) for adjusting pressure loss and noise elimination amount, and the shape of the transition section (85) is a horn mouth with a large outside and a small inside.