CN219346646U

CN219346646U - Vibration and noise reduction structure, outdoor unit and air conditioner

Info

Publication number: CN219346646U
Application number: CN202223272365.9U
Authority: CN
Inventors: 程诗; 贺昌业; 高智强; 杨春生; 张磊
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-07-14
Anticipated expiration: 2032-12-07

Abstract

The utility model provides a vibration and noise reduction structure, an outdoor unit and an air conditioner, wherein the vibration and noise reduction structure comprises: the noise reduction unit comprises a shell, a through hole is formed in the middle of the shell, the shell is connected with the installation foundation, a cavity is formed between the shell and the installation foundation, the through hole is communicated with the cavity, and a noise reduction cavity is formed between the through hole and the cavity. By applying the technical scheme of the utility model, when the acoustic energy enters the cavity formed between the shell and the installation foundation, the air medium continuously enters the through hole and is continuously compressed and expanded in the through hole, so that noise is effectively attenuated, the noise reduction cavity can enable the acoustic energy of a low frequency band to generate a resonance effect, and the acoustic energy is dissipated in another mode, so that the sound is absorbed, and the problem of poor sound quality of the air conditioner caused by the fact that the low frequency noise of the air conditioner is highlighted in the prior art is solved.

Description

Vibration and noise reduction structure, outdoor unit and air conditioner

Technical Field

The utility model relates to the technical field of air conditioning equipment, in particular to a vibration and noise reduction structure, an outdoor unit and an air conditioner.

Background

The noise source of the air conditioner mainly has two parts, namely compressor noise and fan noise. The compressor noise is mainly middle and high frequency, and the arrangement of the sound insulation cover of the compressor is mainly used for eliminating the middle and high frequency noise of the compressor. However, after the energy of the middle and high frequency noise is suppressed, the low frequency noise is highlighted, resulting in poor overall sound quality.

In addition, in the development of the whole machine, the problems of higher 2-frequency multiplication noise and 4-frequency multiplication noise of the compressor are often encountered, and the running frequency of the compressor is generally about 100Hz, so that the problems of low frequency are very difficult to solve in a limited space because the 2-frequency multiplication and 4-frequency multiplication of the compressor are about 200Hz and 400Hz respectively.

The appearance part of the air conditioner outdoor unit is mainly of a sheet metal structure, has thin-wall characteristics and is provided with a large plane, and is a main noise radiation part of the air conditioner outdoor unit. And the vibration of the compressor is transmitted to the sheet metal part through a pipeline, the low-order mode of the compressor is easy to couple with fundamental frequency and frequency multiplication 2 of the compressor to aggravate the noise of the whole machine, the structural strength of the compressor is difficult to realize by only relying on reinforcing ribs, but the structures such as additional damping and the like are easy to age and fall off to cause failure, and the thickness of the structure is thickened to sacrifice the economical efficiency.

Disclosure of Invention

The utility model mainly aims to provide a vibration and noise reduction structure, an outdoor unit and an air conditioner, so as to solve the problem that the low-frequency noise of the air conditioner is prominent in the prior art, and the tone quality of the air conditioner is poor.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a vibration reduction and noise reduction structure comprising: the noise reduction unit comprises a shell, a through hole is formed in the middle of the shell, the shell is connected with the installation foundation, a cavity is formed between the shell and the installation foundation, the through hole is communicated with the cavity, and a noise reduction cavity is formed between the through hole and the cavity.

Further, the circumferential direction of the housing comprises four sides, each side being provided with at least one mounting post.

Further, the vibration damping and noise reducing structure further includes: and each side edge of each mounting hole is provided with at least one mounting hole, and each mounting hole is opposite to each mounting column.

Further, one mounting hole in the adjacent vibration and noise reduction structure is in interference fit with a mounting post in the other vibration and noise reduction structure.

Further, the side wall of the shell is provided with a groove, a cavity is formed between the groove and the mounting base, and the through hole is formed in the bottom of the groove.

Further, the outer contour line of the groove wall of the groove is polygonal.

According to another aspect of the present utility model, there is provided an outdoor unit including a vibration/noise reduction structure, the vibration/noise reduction structure being the vibration/noise reduction structure described above.

Further, the installation foundation comprises a side plate, the vibration and noise reduction structure is connected with the side plate, and a cavity is formed between the vibration and noise reduction structure and the surface of the side plate.

Further, the vibration and noise reduction structure is one or more.

According to another aspect of the present utility model, there is provided an air conditioner including an outdoor unit, the outdoor unit being the above-mentioned outdoor unit.

By applying the technical scheme of the utility model, when the acoustic energy enters the cavity formed between the shell and the installation foundation, the air medium continuously enters the through hole and is continuously compressed and expanded in the through hole, so that noise is effectively attenuated, the noise reduction cavity can enable the acoustic energy of a low frequency band to generate a resonance effect, and the acoustic energy is dissipated in another mode, so that the sound is absorbed, and the problem of poor sound quality of the air conditioner caused by the fact that the low frequency noise of the air conditioner is highlighted in the prior art is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic structural view of a first embodiment of a vibration and noise reduction structure according to the present utility model;

FIG. 2 shows a schematic structural view of a second embodiment of a vibration and noise reduction structure according to the present utility model;

FIG. 3 shows a schematic structural view of a third embodiment of a vibration and noise reduction structure according to the present utility model;

FIG. 4 shows a schematic structural view of a fourth embodiment of a vibration and noise reduction structure according to the present utility model;

fig. 5 is a schematic view showing the structure of a first embodiment of an outdoor unit according to the present utility model;

fig. 6 is a schematic view showing a structure of a second embodiment of an outdoor unit according to the present utility model;

fig. 7 is a schematic view showing the structure of a third embodiment of an outdoor unit according to the present utility model;

FIG. 8 is a schematic diagram showing the comparison of the damping and noise reduction structure of the prior art and the damping and noise reduction structure of the present utility model to the amount of attenuation of noise;

fig. 9 shows a schematic diagram of the natural frequencies of a prior art side plate and a side plate of the present utility model.

Wherein the above figures include the following reference numerals:

10. a housing; 11. a through hole; 12. a mounting column; 13. a mounting hole; 14. a groove; 20. and a side plate.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

Referring to fig. 1 to 4, according to an embodiment of the present application, a vibration damping and noise reduction structure is provided.

Specifically, the vibration and noise reduction structure comprises a noise reduction unit, the noise reduction unit comprises a shell 10, a through hole 11 is formed in the middle of the shell 10, the shell 10 is connected with a mounting base, a cavity is formed between the shell 10 and the mounting base, the through hole 11 is communicated with the cavity, and the through hole 11 and the cavity form a noise reduction cavity.

By applying the technical scheme of the embodiment, when the acoustic energy enters the cavity formed between the shell 10 and the installation foundation, the air medium continuously enters the through hole 11 and is continuously compressed and expanded in the through hole 11, so that noise is effectively attenuated, the noise reduction cavity can enable the acoustic energy of a low frequency band to generate a resonance effect, the acoustic energy is dissipated in another mode, and therefore the sound is absorbed, and the problem that the low frequency noise of the air conditioner is highlighted in the prior art, and the tone quality of the air conditioner is poor is solved.

As shown in fig. 4, the circumferential direction of the housing 10 includes four sides, each provided with at least one mounting post 12. Specifically, each side is provided with a mounting post 12, wherein the end of the mounting post 12 is circular, and the mounting post 12 is arranged to facilitate the installation of the vibration and noise reduction structure.

As shown in fig. 1-3, the vibration and noise reduction structure further includes mounting holes 13, each side is provided with at least one mounting hole 13, and each mounting hole 13 is disposed opposite to each mounting post 12. Specifically, the mounting holes 13 on each side are provided opposite the mounting posts 12.

Further, one mounting hole 13 in an adjacent vibration and noise reduction structure is in interference fit with a mounting post 12 in another vibration and noise reduction structure. In this embodiment, when two vibration/noise reduction structures are connected, by inserting the mounting post 12 of one vibration/noise reduction structure into the mounting hole 13 of the other vibration/noise reduction structure, connection of the two vibration/noise reduction structures can be achieved, and due to interference fit between the mounting hole 13 and the mounting post 12, firm and reliable connection of the two vibration/noise reduction structures is ensured.

As shown in fig. 1, the side wall of the housing 10 is provided with a groove 14, a cavity is formed between the groove 14 and the mounting base, and the through hole 11 is formed at the bottom of the groove 14. The structure that makes the vibration damping and makes an uproar falls in the setting like this is simple, reliable, has guaranteed the technical effect of vibration damping and making an uproar structure attenuation noise falls, has solved among the prior art air conditioner low frequency noise and has highlighted, causes the relatively poor problem of air conditioner tone quality.

Further, the outer contour line of the wall of the groove 14 is polygonal. For example, the outer contour lines of the walls of the groove 14 may be rectangular, square, and diamond.

According to another embodiment of the present application, as shown in fig. 5 to 7, an outdoor unit is provided, which includes a vibration/noise reduction structure, where the vibration/noise reduction structure is the vibration/noise reduction structure in the above embodiment. By applying the vibration damping and noise reduction structure in the embodiment to the outdoor unit, the noise of the outdoor unit is effectively attenuated, and the low-frequency noise of the outdoor unit can be absorbed.

Further, the installation foundation comprises a side plate 20, the vibration and noise reduction structure is connected with the side plate 20, and a cavity is formed between the vibration and noise reduction structure and the surface of the side plate 20. Specifically, the side plate 20 is a right side plate of the outdoor unit, and the side plate 20 is a sheet metal structure. When the acoustic energy enters the cavity, the air medium can be continuously compressed and expanded in the through hole communicated with the cavity, the air medium has an obvious effect on the attenuation of noise, and when the compression and expansion of the air medium are opposite to the external driving sound pressure, the negative equivalent modulus can be realized at the resonance point. The noise reduction cavity in the vibration and noise reduction structure produces a resonance effect on the low frequency band of acoustic energy, which is dissipated in another form, thereby absorbing sound. Meanwhile, the vibration and noise reduction structure is arranged on the large plane structure of the side plate 20, so that the rigidity of the side plate 20 is increased, the mode of the side plate 20 can be changed, the resonance between the side plate 20 and the compressor frequency is avoided, and the vibration transmitted to the side plate 20 is attenuated.

As shown in fig. 5 and 6, the vibration and noise reduction structure is one or more. In this embodiment, the specific number of vibration damping and noise reduction structures is determined according to the plane or the target noise reduction effect.

Fig. 8 is a schematic diagram showing the comparison between the vibration/noise reduction structure of the prior art and the vibration/noise reduction structure of the present application for reducing the amount of noise, and in this embodiment, one vibration/noise reduction structure is used.

Fig. 9 is a schematic diagram showing the comparison of the natural frequencies of the side plate of the prior art and the side plate of the present application, and in this embodiment, 8 vibration and noise reduction structures are used.

In one embodiment of the present application, the end surfaces of the side edges of the vibration and noise reduction structure may be fixed to the sheet metal structure by means of adhesive bonding or spot welding, and specifically, the sheet metal structure includes a sheet metal structure such as a panel, a top cover, and the like.

In another embodiment of the present application, the vibration damping and noise reducing structure of the present application may be freely combined and applied to any large planar thin-wall structure, so as to enhance the rigidity of the thin-wall structure and play a role in damping vibration.

According to another embodiment of the present application, an air conditioner is provided, which includes an outdoor unit, wherein the outdoor unit is the outdoor unit in the above embodiment. In this embodiment, the outdoor unit in the above embodiment is adopted in the air conditioner, and the rigidity of the sheet metal structural member of the outdoor unit is enhanced through the vibration reduction and noise reduction structure, so that resonance between the sheet metal structure and the frequency of the compressor is avoided, vibration transmitted to the sheet metal structure is attenuated, low-frequency noise can be effectively absorbed, and the tone quality of the air conditioner is improved.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described in general terms in the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the utility model.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A vibration and noise reduction structure, comprising:

the noise reduction unit comprises a shell (10), a through hole (11) is formed in the middle of the shell (10), the shell (10) is connected with a mounting foundation, a cavity is formed between the shell (10) and the mounting foundation, the through hole (11) is communicated with the cavity, and the through hole (11) and the cavity form a noise reduction cavity;

the side wall of the shell (10) is provided with a groove (14), the cavity is formed between the groove (14) and the installation foundation, and the through hole (11) is formed in the bottom of the groove (14).

2. Vibration and noise reducing structure according to claim 1, characterized in that the circumferential direction of the housing (10) comprises four sides, each provided with at least one mounting post (12).

3. The vibration and noise reducing structure according to claim 2, further comprising:

and each side edge of each mounting hole (13) is provided with at least one mounting hole (13), and each mounting hole (13) is opposite to each mounting column (12).

4. A vibration and noise reducing structure according to claim 3, wherein one of said mounting holes (13) of adjacent vibration and noise reducing structures is interference fit with said mounting post (12) of the other vibration and noise reducing structure.

5. Vibration and noise reducing structure according to claim 1, characterized in that the outer contour line of the groove wall of the groove (14) is polygonal.

6. An outdoor unit comprising a vibration/noise reduction structure according to any one of claims 1 to 5.

7. The outdoor unit of claim 6, wherein the installation base includes a side plate (20), the vibration/noise reduction structure is connected to the side plate (20), and the cavity is formed between the vibration/noise reduction structure and a surface of the side plate (20).

8. The outdoor unit of claim 7, wherein the vibration/noise reduction structure is one or more.

9. An air conditioner comprising an outdoor unit according to any one of claims 6 to 8.