CN215890606U - Noise reduction device and air conditioner - Google Patents

Abstract

The utility model discloses a noise reduction device and an air conditioner, wherein the noise reduction device is used for reducing noise generated by a fan module and comprises: the first sound absorbing piece is provided with a first air outlet hole for air outlet; a first fixing assembly for mounting the first sound absorbing member around the fan module; a second sound absorbing member; and the second fixing component is used for installing the second sound absorbing piece at the middle position of the fan module. This noise reduction device installation is stable, and first sound absorbing member and fan module separately install, and the fan module during operation that has reduced effectively is to the vibrations of fan module, and can reduce the noise of the positive department of fan module effectively. According to each experimental data under different rotating speeds, the noise reduction device can effectively reduce the noise by about 4-5 dB, and the effect is more obvious particularly under higher rotating speeds.

Description

Noise reduction device and air conditioner

Technical Field

The utility model belongs to the technical field of air conditioner fans, and particularly relates to a noise reducing device and an air conditioner.

Background

When the air conditioner indoor unit is designed, the air conditioner indoor unit is in an indoor environment and is close to a user, the requirement for noise reduction is high, and the comfort level of the user needs to be guaranteed.

The current indoor unit of the air conditioner in the machine room mainly has the following noise treatment modes:

1. the noise at the sound source is reduced, namely the noise is reduced at the fan, and the main modes comprise modes of reducing the rotating speed of the fan and the like, and the mode has higher requirement on the fan;

2. the noise is reduced at the user, the user is required to wear the noise reduction earplug in a machine room, and the mode has higher requirements on the initiative of the customer;

3. the following two main ways to reduce noise during propagation are currently available: firstly, the porous sound-absorbing medium is adhered to the side surface of the air conditioner, the mode can reduce the side surface transmission noise of the air conditioner, but the front noise reduction capability is limited; secondly, the mode of making an uproar falls wholly, and the vibrations source and inhale the sound medium as a whole, but this kind of mode can aggravate the vibrations of the structure of fixed amortization medium, and area occupied is great, and customer maintainability is not strong.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reducing device which is stable in installation, can effectively reduce the vibration of an air conditioner fan during working to a structural member for fixing a silencing medium, and can effectively reduce the noise at the front of the air conditioner fan.

Another technical problem to be solved by the present invention is to provide an air conditioner with low noise.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

a noise reducing device for reducing noise generated by a fan module, comprising:

the first sound absorbing piece is provided with a first air outlet hole for air outlet;

a first fixing assembly for mounting the first sound absorbing member around the fan module;

a second sound absorbing member;

and the second fixing component is used for installing the second sound absorbing piece at the middle position of the fan module.

Further, the first sound absorbing member and the second sound absorbing member are made of a sound absorbing porous medium.

Further, first fixed subassembly includes the main shrouding, seted up the second exhaust vent on the main shrouding, the second exhaust vent with first exhaust vent is corresponding.

Furthermore, the first fixing component further comprises a side sealing plate, the side sealing plate is fixedly connected with the main sealing plate, and a cavity with one open side and used for mounting the first sound absorbing piece is formed by the side sealing plate and the main sealing plate in a surrounding mode.

Furthermore, the other end of the side sealing plate, which is far away from the main sealing plate, is provided with a flanging.

Further, the second fixing component comprises a middle fixing plate, and the middle fixing plate is fixedly connected with one end of the second sound absorbing piece.

The air conditioner comprises a fan module, a cabinet and the noise reducing device, wherein the noise reducing device is arranged in front of the fan module.

Further, the first fixing component is fixedly installed on the machine cabinet.

Further, the second fixing component is fixedly installed on the fan module.

The utility model has the beneficial effects that:

this noise reduction device installation is stable, and first sound absorbing member and fan module separately install, and the fan module during operation that has reduced effectively is to the vibrations of fan module, and can reduce the noise of the positive department of fan module effectively. According to each experimental data under different rotating speeds, the noise reduction device can effectively reduce the noise by about 4-5 dB, and the effect is more obvious particularly under higher rotating speeds.

Drawings

FIG. 1 is a schematic perspective view of a noise reduction device of the present invention in a preferred embodiment;

FIG. 2 is an exploded view of a first fixing assembly of the present invention in a preferred embodiment;

FIG. 3 is a schematic view of the second sound absorbing member of the present invention assembled in a preferred embodiment;

fig. 4 is a schematic perspective view of an air conditioner according to the present invention in a preferred embodiment;

fig. 5 is a perspective view illustrating an assembly of an air conditioner according to the present invention in a preferred embodiment.

The reference numerals include:

10-noise reduction means 100-first sound absorbing member 110-first air outlet

200-second sound absorbing member 300-first fixing component 310-main sealing plate

311-second air outlet hole 320-side sealing plate 321-first sub-side sealing plate

322-second sub-side sealing plate 323-third sub-side sealing plate 324-fourth sub-side sealing plate

325-flange 330-fixing piece 400-second fixing component

410-middle fixing plate 420-fastener 20-fan module

30-machine cabinet

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1

Referring to fig. 1-3, in a preferred embodiment of the present invention, the noise reduction apparatus 10 is used for reducing noise generated by a fan module 20, and includes: the first sound absorbing piece 100 is provided with a first air outlet 110 for air outlet on the first sound absorbing piece 100; a first fixing assembly 300 for mounting the first sound-absorbing member 100 around the blower module 20; a second sound-absorbing member 200; and a second fixing member 400 for mounting the second sound-absorbing member 200 at a middle position of the fan module 20.

This noise reduction device 10 installation is stable, and first sound absorbing member 100 separately installs with fan module 20, and the fan module 20 during operation that has reduced effectively shakes fan module 20, and can reduce the noise of fan module 20 front department effectively. According to various experimental data under different rotating speeds, the noise reduction device 10 can effectively reduce the noise by about 4-5 dB, and especially has more obvious effect under higher rotating speed. The above components are described in further detail below.

As shown in fig. 1 and 2, the noise reduction device 10 mainly includes a first sound absorbing member 100, a second sound absorbing member 200, a first fixing member 300, and a second fixing member 400. Wherein the first and second sound-absorbing members 100 and 200 are made of sound-absorbing porous media. First sound absorbing member 100 is generally box-shaped as a whole, and a first air outlet 110 for air outlet is provided in the middle, and the size of first air outlet 110 is adapted to the air outlet of fan module 20. The second sound absorbing member 200 is generally cylindrical as a whole, and the size of the second sound absorbing member 200 is matched with the hub of the fan module 20.

The first fixing assembly 300 includes a main sealing plate 310, a side sealing plate 320 and a fixing member 330. Specifically, the main sealing plate 310 is substantially square, a second air outlet 311 is formed in a middle position of the main sealing plate, and the second air outlet 311 corresponds to the first air outlet 110.

The side sealing plate 320 is fixedly connected to the main sealing plate 310, and the side sealing plate 320 and the main sealing plate 310 define a cavity for mounting the first sound absorbing material 100. The side of the cavity far away from the second air outlet 311 has an opening. In a preferred embodiment of the present application, the side cover plate 320 is integrally formed with the main cover plate 310, and the first sound-absorbing member 100 is resilient and can be fitted into the cavity through the opening after being compressed.

In another preferred embodiment of the present application, the side sealing plates 320 are manufactured separately from the main sealing plate 310 and then fixedly coupled together. Specifically, the side sealing plates 320 include a first sub-side sealing plate 321, a second sub-side sealing plate 322, a third sub-side sealing plate 323, and a fourth sub-side sealing plate 324, and the first sub-side sealing plate 321, the second sub-side sealing plate 322, the third sub-side sealing plate 323, and the fourth sub-side sealing plate 324 are sequentially connected end to form a shape of a Chinese character "kou". One end of the side sealing plate 320 is fixedly connected with the main sealing plate 310, and the other end is provided with a flange 325. When the first sound absorbing member 100 and the first fixing component 300 are mounted, the first sound absorbing member 100 is first placed into the main sealing plate 310, the first sub-side sealing plate 321 and the second sub-side sealing plate 322, and then the third sub-side sealing plate 323 and the fourth sub-side sealing plate 324 are fastened, so that the first sound absorbing member 100 is integrally fixed inside the device by the flange 325.

The first fixing assembly 300 further includes a fixing member 330, one end of the fixing member 330 is fixedly connected to the main sealing plate 310, and the other end is used for fixedly connecting to the cabinet 30.

The second fixing assembly 400 includes an intermediate fixing plate 410 and a fastener 420. As shown in fig. 3, the intermediate fixing plate 410 has a disk shape as a whole, and is fixedly connected to one end of the second sound absorbing member 200. The intermediate fixing plate 410 and the fastening member 420 are used to fix the second sound-absorbing member 200 to the mesh of the fan module 20.

The noise reduction device 10 effectively reduces the front noise transmission of the fan module 20 without losing the noise reduction of the side surface of the fan module 20. This noise reduction device 10 is as independent unit, and with fan module 20 independent installation, both reduced the influence that brings noise reduction device 10 when fan module 20 shakes, can independently install again and maintain.

Example 2

As shown in fig. 4, the air conditioner includes a fan module 20 and a cabinet 30, and further includes a noise reduction device 10 according to embodiment 1, wherein the noise reduction device 10 is installed in front of the fan module 20.

Specifically, as shown in fig. 5, the fixing member 330 of the first fixing assembly 300 is fixedly mounted on the front frame of the cabinet 30. The second fixing component 400 is fixedly installed on the mesh of the fan module 20, and the specific installation position corresponds to the hub of the fan module 20.

The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application range can be made by those skilled in the art without departing from the spirit of the present invention, and all changes that fall within the protective scope of the utility model are therefore considered to be within the scope of the utility model.

Claims (9)

1. A noise reducing device for reducing noise generated by a fan module (20), comprising:

the first sound absorbing piece (100), wherein a first air outlet hole (110) for air outlet is formed in the first sound absorbing piece (100);

a first fixing assembly (300) for mounting the first sound-absorbing member (100) around the fan module (20);

a second sound-absorbing member (200);

and a second fixing assembly (400) for mounting the second sound-absorbing member (200) at a middle position of the fan module (20).

2. The noise reducing device according to claim 1, wherein the first sound-absorbing member (100) and the second sound-absorbing member (200) are made of sound-absorbing porous media.

3. The noise reduction device of claim 1, wherein the first fixing member (300) comprises a main sealing plate (310), and a second air outlet hole (311) is formed in the main sealing plate (310), and the second air outlet hole (311) corresponds to the first air outlet hole (110).

4. A noise-reducing device according to claim 3, wherein the first fixing unit (300) further comprises a side sealing plate (320), the side sealing plate (320) is fixedly connected with the main sealing plate (310), and both of them define a cavity with one side open for mounting the first sound-absorbing member (100).

5. A noise-abatement apparatus according to claim 4, wherein the side sealing plate (320) is provided with a flange (325) at the end remote from the main sealing plate (310).

6. The noise reduction device according to claim 1, wherein the second fixing member (400) comprises an intermediate fixing plate (410), and the intermediate fixing plate (410) is fixedly coupled to one end of the second sound-absorbing member (200).

7. An air conditioner comprising a fan module (20) and a cabinet (30), characterized by further comprising a noise reducing device (10) according to any one of claims 1 to 6, the noise reducing device (10) being mounted in front of the fan module (20).

8. The air conditioner according to claim 7, wherein the first fixing assembly (300) is fixedly mounted on the cabinet (30).

9. The air conditioner according to claim 7, wherein the second fixing assembly (400) is fixedly installed on the fan module (20).

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