A compressor noise reduction structure and module

Abstract

The utility model discloses a compressor noise reduction structure and a module machine, comprising a noise reduction box, wherein an independent chamber for installing a compressor is formed in the noise reduction box; the wall of the noise reduction box comprises an inner sound-absorbing layer, an intermediate sound-absorbing layer and an outer sound-insulating layer arranged from the inside to the outside, wherein the inner sound-absorbing layer is evenly distributed with a plurality of sound-absorbing holes; compared with the prior art, the utility model forms an independent chamber in the noise reduction box to install the compressor, and the noise generated by the compressor during operation is partially attenuated through the plurality of sound-absorbing holes on the inner sound-absorbing layer, and then the energy is absorbed by the intermediate sound-absorbing layer, and finally the energy is blocked by the outer sound-insulating layer, thereby more effectively performing noise reduction processing.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and in particular to a compressor noise reduction structure and a module machine. Background Art

[0002] As people's quality of life improves, central air conditioners are becoming more and more popular. As the main equipment of the central air conditioning water system, modular units provide cooling and heating for major shopping malls and office buildings. Noise will affect the comfort of air conditioning applications. Nowadays, noise has become an important reference indicator for evaluating the quality of air conditioning. In recent years, the development of living standards has prompted people to increase their requirements for air conditioning noise. Reducing noise is an important measure to enhance the market competitiveness of air conditioning products. The compressor is the main source of noise in the modular unit. During the operation of the compressor motor, medium and high frequency electromagnetic noise will appear. Sound waves in different frequency bands can be superimposed on each other during propagation and radiate outward, eventually causing obvious noise with a noise value of up to 75dB.

[0003] The patent document with application number CN201920803838.2 discloses a noise reduction device for an air-conditioning outdoor unit, wherein the air-conditioning outdoor unit includes a compressor, and the noise reduction device includes: a first noise reduction layer, which is covered on the outer periphery of the compressor; and a second noise reduction layer, which is arranged on the outer side of the first noise reduction layer and a gap is formed between the second noise reduction layer and the first noise reduction layer.

[0004] The above-mentioned noise reduction device reduces the noise of the compressor during operation by forming a first noise reduction layer and a second noise reduction layer on the outside of the compressor, and its noise reduction effect is relatively not very good. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a compressor noise reduction structure and a modular machine to solve the problem in the prior art that the noise reduction effect of the compressor during operation is not very good.

[0006] To achieve the above-mentioned object, the first aspect of the utility model adopts the following technical solution: a compressor noise reduction structure, comprising a noise reduction box, wherein an independent chamber for installing the compressor is formed in the noise reduction box;

[0007] The wall of the noise reduction box comprises an inner sound-absorbing layer, a middle sound-absorbing layer and an outer sound-insulating layer arranged from the inside to the outside, wherein the inner sound-absorbing layer is evenly distributed with a plurality of sound-absorbing holes.

[0008] The second aspect of the utility model also adopts the following technical solution: a modular machine, including a compressor, and also including the above-mentioned compressor noise reduction structure.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The noise reduction structure of this compressor forms an independent chamber in the noise reduction box to install the compressor. The noise generated by the compressor during operation is partially attenuated through a number of silencer holes on the inner silencer layer, and then the energy is absorbed by the middle silencer layer. Finally, it is blocked by the outer sound insulation layer, thereby achieving more effective noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0012] Figure 2 for Figure 1 Exploded diagram of

[0013] Figure 3 for Figure 2 Exploded view of the mid-bottom bulkhead assembly;

[0014] Figure 4 for Figure 2 Exploded view of the center left bulkhead assembly;

[0015] Figure 5 for Figure 2 Exploded view of the center right bulkhead assembly;

[0016] Figure 6 for Figure 2 Exploded view of the center top left bulkhead assembly;

[0017] Figure 7 for Figure 2 Exploded view of the center top right bulkhead assembly.

[0018] The figure marks in the drawings of the specification include: noise reduction box 1, bottom partition assembly 11, first outer partition 111, first sound-absorbing cotton layer 112, first inner sound-absorbing board 113, left partition assembly 12, second outer partition 121, second sound-absorbing cotton layer 122, second inner sound-absorbing board 123, right partition assembly 13, top partition assembly 14, top left partition assembly 141, third outer partition 1411, third sound-absorbing cotton layer 1412, third inner sound-absorbing board 1413, top right partition assembly 142, compressor 2, base assembly 3, stepped bolts 4, silencer holes 5, clearance holes 6, and wire holes 7. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below through specific implementation methods:

[0020] like Figure 1-Figure 7As shown, an embodiment of the utility model proposes a compressor noise reduction structure, including a noise reduction box 1, in which an independent chamber for installing a compressor 2 is formed; the wall of the noise reduction box 1 includes an inner sound-absorbing layer, a middle sound-absorbing layer and an outer sound-insulating layer arranged from the inside to the outside, wherein the inner sound-absorbing layer is evenly distributed with a plurality of sound-absorbing holes 5.

[0021] The compressor noise reduction structure forms an independent chamber in the noise reduction box 1 to install the compressor 2. The noise generated by the compressor 2 during operation is partially attenuated by a number of silencer holes 5 on the inner silencer layer, and then absorbed by the middle silencer layer. Finally, it is blocked by the outer sound insulation layer, thereby more effectively performing noise reduction processing.

[0022] like Figure 2 As shown, according to another embodiment of the present invention, a compressor noise reduction structure, wherein the inner sound absorbing layer and the outer sound insulation layer are both formed by sheet metal parts and their thicknesses are both greater than 1.6 mm; so that the inner sound absorbing layer and the outer sound insulation layer have sufficient structural strength and sufficient sound absorbing ability. In this embodiment, the thickness of the inner sound absorbing layer and the outer sound insulation layer can be 1.7 mm, 1.8 mm or 1.9 mm, etc.

[0023] like Figure 2 As shown, according to another embodiment of the utility model, a compressor noise reduction structure is described, wherein the intermediate sound-absorbing layer adopts a PU structural liner and its thickness is greater than 20 mm; so that the intermediate sound-absorbing layer has sufficient structural strength and sufficient sound-absorbing ability. In this embodiment, the thickness of the intermediate sound-absorbing layer can be 21 mm, 23 mm or 25 mm, etc.

[0024] The above is an overall description of the structure of the noise reduction box 1. The structure of the noise reduction box 1 will be detailed below to facilitate a better understanding of this solution.

[0025] like Figure 2 As shown, according to another embodiment of the utility model, the compressor noise reduction structure further includes a base assembly 3, the noise reduction box 1 is arranged on the base assembly 3 and includes a bottom partition assembly 11, a left partition assembly 12, a right partition assembly 13 and a top partition assembly 14; wherein, the bottom partition assembly 11 is arranged on the base assembly 3, the left partition assembly 12 is connected to the bottom partition assembly 11, the right partition assembly 13 is connected to the bottom partition assembly 11 and cooperates with the left partition assembly 12 to enclose the top edge of the bottom partition assembly 11; the top partition assembly 14 is connected to both the right partition assembly 13 and the left partition assembly 12 and seals the top of the space enclosed by the left partition assembly 12 and the right partition assembly 13.

[0026] In this embodiment:

[0027] The base assembly 3 serves as the mounting base of the noise reduction box 1, and the bottom partition assembly 11, the left partition assembly 12, the right partition assembly 13 and the top partition assembly 14 are assembled and arranged to form the noise reduction box 1. When the compressor 2 is installed in the noise reduction box 1, the noise generated by the compressor 2 during operation can be effectively reduced in different directions through the bottom partition assembly 11, the left partition assembly 12, the right partition assembly 13 and the top partition assembly 14.

[0028] The base assembly 3 and the bottom partition assembly 11 are fixedly connected by a plurality of stepped bolts 4, and each stepped bolt 4 is provided with a gasket to ensure a stable connection.

[0029] The structures of the bottom partition assembly 11, the left partition assembly 12, the right partition assembly 13 and the top partition assembly 14 will be optimized respectively below.

[0030] like Figure 3 , first is the bottom baffle assembly 11.

[0031] The bottom partition assembly 11 is provided with a plurality of clearance holes 6, which are used to make way for the local position of the compressor 2 during the installation of the compressor 2 in the noise reduction box 1 according to actual conditions, so as to install the compressor 2 reasonably and stably.

[0032] Among them, the bottom partition assembly 11 includes a first outer partition 111, a first sound-absorbing cotton layer 112 and a first inner sound-absorbing plate 113. The middle part of the first outer partition 111 is recessed toward one side to form an installation groove. The first sound-absorbing cotton layer 112 is fully spread on the inner wall of the installation groove. The first inner sound-absorbing plate 113 is attached to the side of the first outer partition 111 where the first sound-absorbing cotton layer 112 is laid to place the first sound-absorbing cotton layer 112 between the first outer partition 111 and the first inner sound-absorbing plate 113.

[0033] Here, the first outer partition plate 111, the first sound-absorbing cotton layer 112 and the first inner sound-absorbing plate 113 correspond one by one to the outer sound insulation layer, the middle sound-absorbing layer and the inner sound-absorbing layer in the bottom box wall of the noise reduction box 1; wherein, a plurality of the sound-absorbing holes 5 are opened on the first inner sound-absorbing plate 113.

[0034] Each of the clearance holes 6 penetrates the first outer partition plate 111 , the first sound-absorbing cotton layer 112 and the first inner sound-absorbing plate 113 .

[0035] The arrangement of the first outer partition 111, the first sound-absorbing cotton layer 112 and the first inner sound-absorbing plate 113 can stably position the first sound-absorbing cotton layer 112 between the first outer partition 111 and the first inner sound-absorbing plate 113; specifically, the installation groove formed in the middle of the first outer partition 111 is square, and the first sound-absorbing cotton layer 112 includes a first block attached to the inner bottom wall of the square installation groove and four second blocks connected in sequence on the inner wall of the square installation groove, and the clearance hole 6 passes through the first block. The first inner sound-absorbing plate 113 matches the shape of the first outer partition 111 to stably confine the first sound-absorbing cotton layer 112 composed of the first block and the four second blocks between the first inner sound-absorbing plate 113 and the first outer partition 111.

[0036] Among them, matching rivet nut clearance notches, installation fixing holes and rivet holes are opened on the first outer partition 111 and the first inner silencer 113 to facilitate the fixation between the first outer partition 111 and the first inner silencer 113 and the connection between the bottom partition assembly 11 and the base assembly 3, the left partition assembly 12 and the right partition assembly 13.

[0037] like Figure 4 and Figure 5 , followed by the left partition assembly 12 and the right partition assembly 13.

[0038] The left partition assembly 12 has the same structure as the right partition assembly 13, but a wire hole 7 for the cables connected to the compressor 2 to pass through is opened on the left partition assembly 12, so that the cables connected to the compressor 2 can pass through the wire hole 7 for reasonable installation and arrangement.

[0039] The structures of the left partition assembly 12 and the right partition assembly 13 both include a second outer partition 121, a second sound-absorbing cotton layer 122 and a second inner sound-absorbing plate 123; wherein, the second outer partition 121 is bent in the middle, the second sound-absorbing cotton layer 122 is fully spread on the inner side of the second outer partition 121, and the second inner sound-absorbing plate 123 is attached to the side of the second outer partition 121 where the second sound-absorbing cotton layer 122 is laid so that the second sound-absorbing cotton layer 122 is placed between the second outer partition 121 and the second inner sound-absorbing plate 123.

[0040] Among them, the wire hole 7 passes through the second outer partition 121, the second sound-absorbing cotton layer 122 and the second inner sound-absorbing board 123 in the left partition assembly 12, and the second outer partition 121, the second sound-absorbing cotton layer 122 and the second inner sound-absorbing board 123 correspond one by one to the outer sound insulation layer, the middle sound-absorbing layer and the inner sound-absorbing layer in the side box wall of the noise reduction box 1, and a plurality of the above-mentioned sound-absorbing holes 5 are also opened on the second inner sound-absorbing board 123.

[0041] In this embodiment, the second outer partition 121 is bent in the middle to form an "L" shape, and the second inner sound-absorbing plate 123 is also in an "L" shape, so that the left partition assembly 12 and the right partition assembly 13 are both in an "L" shape. The left partition assembly 12 and the right partition assembly 13 are connected to form a square cylindrical structure; wherein the second sound-absorbing cotton layer 122 is composed of two pieces that are respectively attached between different side walls between the second outer partition 121 and the second inner sound-absorbing plate 123.

[0042] Among them, the second outer partition 121 and the second inner silencer 123 are also provided with rivet nut clearance notches, installation fixing holes and rivet holes, which are convenient for the connection between the second outer partition 121 and the second inner silencer 123, the connection between the left partition assembly 12 and the right partition assembly 13, and the connection between the left partition assembly 12 and the right partition assembly 13 and the bottom partition assembly 11 and the top partition assembly 14 respectively.

[0043] like Figure 6 and Figure 7 , followed by the top baffle assembly 14.

[0044] The top partition assembly 14 includes a top left partition assembly 141 and a top right partition assembly 142, wherein the top left partition assembly 141 is connected to both the right partition assembly 13 and the left partition assembly 12; the top right partition assembly 142 is connected to both the right partition assembly 13 and the left partition assembly 12 and is also spliced ​​with the top left partition assembly 141 to form a plurality of pipe outlet holes at the splicing portion.

[0045] In this embodiment:

[0046] Because it is necessary to pass the intake pipe, exhaust pipe, air supply pipe and other pipes connected to the compressor 2 to the outside of the noise reduction box 1, the top partition assembly 14 is directly designed to include a top left partition assembly 141 and a top right partition assembly 142. After the top left partition assembly 141 and the top right partition assembly 142 are assembled, multiple pipe outlet holes are formed to respectively adapt to the intake pipe, exhaust pipe, air supply pipe and other pipes for reasonable arrangement.

[0047] The top left baffle assembly 141 and the top right baffle assembly 142 each include a third outer baffle 1411, a third sound-absorbing cotton layer 1412, and a third inner sound-absorbing board 1413 stacked in sequence, and a convex groove is formed in the middle of the third outer baffle 1411 toward one side thereof, and the third sound-absorbing cotton layer 1412 is embedded in the accommodating groove. The third outer baffle 1411, the third sound-absorbing cotton layer 1412, and the third inner sound-absorbing board 1413 correspond to the outer sound insulation layer, the middle sound-absorbing layer, and the inner sound-absorbing layer in the top box wall of the noise reduction box 1 one by one, and a plurality of the above-mentioned sound-absorbing holes 5 are opened on the third inner sound-absorbing board 1413.

[0048] The third outer partition 1411 and the third inner silencer 1413 are also provided with rivet nut clearance notches, installation fixing holes and rivet holes, which facilitate the connection between the third outer partition 1411 and the third inner silencer 1413, the connection between the top left partition assembly 141 and the top right partition assembly 142, and the connection between the top left partition assembly 141 and the top right partition assembly 142 and the left partition assembly 12 and the right partition assembly 13 respectively.

[0049] The first sound-absorbing cotton layer 112, the second sound-absorbing cotton layer 122 and the third sound-absorbing cotton layer 1412 are arranged to completely cover the sound-absorbing cotton layer 112 to prevent the sound-absorbing cotton layer 112 from being easily torn and thus greatly reducing the noise reduction function.

[0050] According to another embodiment of the present invention, the modular machine includes a compressor 2 and a compressor noise reduction structure in any of the above embodiments, and the compressor 2 is fixedly installed in the noise reduction box 1.

[0051] During the actual use of the modular machine, it has been tested that the compressor noise reduction structure can reduce the noise generated by compressor 2 from the original 75dB to below 68dB.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A compressor noise reduction structure, characterized in that: A noise reduction box is included, wherein an independent chamber for installing a compressor is formed in the noise reduction box; The wall of the noise reduction box includes an inner sound-absorbing layer, a middle sound-absorbing layer and an outer sound-insulating layer arranged from the inside to the outside, wherein the inner sound-absorbing layer is evenly distributed with a plurality of sound-absorbing holes; Also included is a base assembly, the noise reduction box is disposed on the base assembly and includes: A bottom baffle assembly, the bottom baffle assembly being disposed on the base assembly; A left baffle assembly, the left baffle assembly being connected to the bottom baffle assembly; A right partition assembly, the right partition assembly being connected to the bottom partition assembly and cooperating with the left partition assembly to surround the top edge of the bottom partition assembly; A top baffle assembly, wherein the top baffle assembly is connected to both the right baffle assembly and the left baffle assembly and seals the top of the space enclosed by the left baffle assembly and the right baffle assembly; The top baffle assembly comprises: A top left baffle assembly, wherein the top left baffle assembly is connected to both the right baffle assembly and the left baffle assembly; The top right partition assembly is connected to both the right partition assembly and the left partition assembly and is also spliced ​​with the top left partition assembly to form a plurality of pipe outlet holes at the splicing position.

2. A compressor noise reduction structure according to claim 1, characterized in that: The inner sound-absorbing layer and the outer sound-insulating layer are both formed by sheet metal parts and their thicknesses are both greater than 1.6 mm.

3. A compressor noise reduction structure according to claim 1, characterized in that: The middle sound-absorbing layer adopts a PU structural liner and its thickness is greater than 20 mm.

4. A compressor noise reduction structure according to claim 1, characterized in that: The bottom baffle assembly comprises: A first outer partition, wherein a middle portion of the first outer partition is recessed toward one side thereof to form a mounting groove; A first sound-absorbing cotton layer, wherein the first sound-absorbing cotton layer is fully spread on the inner wall of the installation groove; The first inner sound-absorbing plate is attached to the side of the first outer partition plate on which the first sound-absorbing cotton layer is laid so that the first sound-absorbing cotton layer is placed between the first outer partition plate and the first inner sound-absorbing plate.

5. The compressor noise reduction structure according to claim 1, characterized in that: The bottom partition assembly is provided with a plurality of clearance holes.

6. A compressor noise reduction structure according to claim 1, characterized in that: The left partition assembly and the right partition assembly have the same structure and both include: A second outer partition, wherein the second outer partition is bent in the middle; A second sound-absorbing cotton layer, wherein the second sound-absorbing cotton layer is fully spread on the inner side of the second outer partition; The second inner sound-absorbing plate is attached to the side of the second outer partition plate on which the second sound-absorbing cotton layer is laid so that the second sound-absorbing cotton layer is placed between the second outer partition plate and the second inner sound-absorbing plate.

7. The compressor noise reduction structure according to claim 1, characterized in that: The left partition assembly is provided with a wire hole for the wires connected to the compressor to pass through.

8. A modular machine, comprising a compressor, characterized in that: It also includes a compressor noise reduction structure according to any one of claims 1-7.

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