CN209674870U - A kind of compressor entrance noise elimination noise reduction structure - Google Patents
A kind of compressor entrance noise elimination noise reduction structure Download PDFInfo
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- CN209674870U CN209674870U CN201822244179.1U CN201822244179U CN209674870U CN 209674870 U CN209674870 U CN 209674870U CN 201822244179 U CN201822244179 U CN 201822244179U CN 209674870 U CN209674870 U CN 209674870U
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- microperforated panel
- compressor entrance
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- reduction structure
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- 230000008030 elimination Effects 0.000 title claims abstract description 17
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 17
- 239000011148 porous material Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
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Abstract
The utility model provides a kind of compressor entrance noise elimination noise reduction structure, it is arranged in compressor entrance, with a thickness of 100-210mm, including the first microperforated panel set gradually, second microperforated panel and rigid back, first microperforated panel is arranged in that side of compressor entrance runner, honeycomb is set between first microperforated panel and the second microperforated panel, bearing rib is arranged between second microperforated panel and rigid back to play a supporting role, forms cavity between the bearing rib.A kind of compressor entrance noise elimination noise reduction structure provided by the utility model, sound absorption effect is good, and acoustic absorptivity can reach 0.5 or more.
Description
Technical field
The utility model relates to technical field of noise treatment, in particular to a kind of compressor entrance noise elimination noise reduction structure.
Background technique
Compressor plays an important role in production, is widely used in machinery, mine, metallurgy, chemical industry and building etc.
Field, but the noise level that it is generated is high, influences that face is wide, also have become endanger workers ' health and pollute environment important noise source it
One.It solves the problems, such as that compressor noise can further improve product and competitiveness, for using department, solves compressor and make an uproar
Sound problem can greatly contribute to improve environment and reduce worker by the harm of noise.The noise of compressor be mainly compressor into
The noise for exporting the vibration of air draught caused by periodic inlet and outlet and generating.Due to the noise source of compressor entrance
More special, noise energy is concentrated mainly in the band limits of 100-1000Hz, and flow velocity can achieve more than 70 meters per second,
Level of noise is also in 130dB or more, therefore general silencing equipment is poor to the noise elimination effect of compressor noise, therefore, needs
A kind of sound absorption structure that sound absorbing performance is relatively good to carry out sqouynd absorption lowering noise to compressor.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of good compressor entrances of sound absorption effect to eliminate the noise
Denoising structure, to solve the noise problem in compressor operating.
In order to solve the above technical problems, the utility model provides a kind of compressor entrance noise elimination noise reduction structure, setting
In compressor entrance, with a thickness of 100-210mm, including the first microperforated panel set gradually, the second microperforated panel and rigidity
Backboard, in that side of compressor entrance runner, first microperforated panel and second micro- is worn for first microperforated panel setting
Honeycomb is set between orifice plate, bearing rib is set between second microperforated panel and rigid back and is played a supporting role,
Cavity is formed between the bearing rib.
Further, first microperforated panel and the second microperforated panel with a thickness of 0.8-1mm, punching rate 3%-
6%, micro-pore diameter 1.5-3mm.
Further, the honeycomb with a thickness of 100-110mm.
Further, the cavity with a thickness of 90-100mm.
A kind of compressor entrance noise elimination noise reduction structure provided by the utility model, for the noise source of compressor entrance
Noise energy be concentrated mainly in 200-1000Hz band limits, flow velocity can achieve more than 70 meters per second, and noise level is in 130dB
Above feature adds the sound absorption structure form of honeycomb using the double-deck microperforated panel, in frequency range 200-1000Hz
Different in flow rate and 130dB sound pressure level under the conditions of, there is good sound absorption effect, acoustic absorptivity can reach 0.5 or more, opposite sound
Resistance and opposite acoustic reactance have relatively good consistency.And compressor entrance noise elimination noise reduction structure provided by the utility model,
Bearing rib and rigid back are set at the back of the second microperforated panel, plays good supporting role, there is denoising structure
Preferable bonding strength and structural strength, the also bonding strength with higher when denoising structure size is larger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of compressor entrance noise elimination noise reduction structure provided by the embodiment of the utility model.
Specific embodiment
Referring to Fig. 1, a kind of compressor entrance noise elimination noise reduction structure provided by the embodiment of the utility model is mounted on compression
It at machine entrance, is concentrated mainly in 100-1000Hz band limits according to the noise energy of compressor, flow velocity can achieve often
Seconds more than 70 meters, noise level in the noise source feature of 130dB or more, the thickness of this denoising structure is designed as 100-210mm, wraps
Include the first microperforated panel 1 set gradually, the second microperforated panel 3 and rigid back 6, wherein the setting of the first microperforated panel 1 is being leaned on
That side of nearly compressor entrance runner, is arranged honeycomb 2 between the first microperforated panel 1 and the second microperforated panel 3, the
Honeycomb 2 is set between one microperforated panel 1 and the second microperforated panel 3, it can not only be to the first microperforated panel 1 and the second micropunch
Plate 3 is played a supporting role, and reinforces the structural strength between the first microperforated panel 1 and the second microperforated panel 3, while can also be by the
Cavity between one microperforated panel 1 and the second microperforated panel 3 is divided into various small chambers, limits the first microperforated panel 1
And the second air-flow tangential flow between microperforated panel 3, to weaken the influence that air-flow tangential velocity generates noise.Second micro- wears
Bearing rib 5 is set between orifice plate 3 and rigid back 6, and rigid back 6 and bearing rib 5 play support to the second microperforated panel 3
Effect.Cavity 4 is formed between bearing rib 5 between second microperforated panel 3 and rigid back 6, cavity 4 generates acoustic resonance,
To have the function that noise elimination noise reduction.
Wherein, the thickness of the first microperforated panel 1 and the second microperforated panel 3 is 0.8-1mm, and punching rate is 3%-6%,
Micro-pore diameter is 1.5-3mm.Honeycomb 2 with a thickness of 100-110mm, cavity 4 with a thickness of 90-100mm.
1 third-octave Frequency point of table tests acoustic absorptivity (flow velocity 30m/s)
2 third-octave Frequency point of table tests acoustic absorptivity (flow velocity 50m/s)
3 third-octave Frequency point of table tests acoustic absorptivity (flow velocity 75m/s)
Referring to table 1, table 2, table 3, when compressor disengaging air-flow 30m/s-75m/s it is different in flow rate under, in the sound of 130dB
It, can be with by the acoustic absorptivity test result to third-octave Frequency points multiple in 100Hz-1000Hz frequency range under the conditions of arbitrarily downgrading
Find out, a kind of compressor entrance noise elimination noise reduction structure provided by the embodiment of the utility model, acoustic absorptivity is substantially all 0.5
More than, opposite acoustic resistance and opposite acoustic reactance all have good consistency.
It should be noted last that the above specific embodiment is only to illustrate the technical solution of the utility model rather than limits
System, although the utility model is described in detail referring to example, those skilled in the art should understand that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (4)
1. a kind of compressor entrance noise elimination noise reduction structure is arranged in compressor entrance, with a thickness of 100-210mm, feature
Be: including the first microperforated panel (1) set gradually, the second microperforated panel (3) and rigid back (6), described first micro- is worn
Orifice plate (1) is arranged between that side of compressor entrance runner, first microperforated panel (1) and the second microperforated panel (3)
It is arranged honeycomb (2), bearing rib (5) is set between second microperforated panel (3) and rigid back (6) and play support work
With formation cavity (4) between the bearing rib (5).
2. compressor entrance noise elimination noise reduction structure according to claim 1, it is characterised in that: first microperforated panel
(1) and the second microperforated panel (3) with a thickness of 0.8-1mm, punching rate 3%-6%, micro-pore diameter 1.5-3mm.
3. compressor entrance noise elimination noise reduction structure according to claim 1, it is characterised in that: the honeycomb (2)
With a thickness of 100-110mm.
4. compressor entrance noise elimination noise reduction structure according to claim 1, it is characterised in that: the thickness of the cavity (4)
Degree is 90-100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244179.1U CN209674870U (en) | 2018-12-29 | 2018-12-29 | A kind of compressor entrance noise elimination noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244179.1U CN209674870U (en) | 2018-12-29 | 2018-12-29 | A kind of compressor entrance noise elimination noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209674870U true CN209674870U (en) | 2019-11-22 |
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| CN201822244179.1U Active CN209674870U (en) | 2018-12-29 | 2018-12-29 | A kind of compressor entrance noise elimination noise reduction structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283809A (en) * | 2020-10-30 | 2021-01-29 | 青岛海信日立空调系统有限公司 | Outdoor air conditioner |
| CN113079656A (en) * | 2020-01-04 | 2021-07-06 | 鸿富锦精密工业(武汉)有限公司 | Noise reduction structure and electronic device with same |
| CN114909223A (en) * | 2021-02-08 | 2022-08-16 | 中国航发商用航空发动机有限责任公司 | Aeroengine sound lining device and aeroengine |
-
2018
- 2018-12-29 CN CN201822244179.1U patent/CN209674870U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113079656A (en) * | 2020-01-04 | 2021-07-06 | 鸿富锦精密工业(武汉)有限公司 | Noise reduction structure and electronic device with same |
| CN113079656B (en) * | 2020-01-04 | 2023-10-27 | 鸿富锦精密工业(武汉)有限公司 | Noise reduction structure and electronic device with same |
| CN112283809A (en) * | 2020-10-30 | 2021-01-29 | 青岛海信日立空调系统有限公司 | Outdoor air conditioner |
| CN114909223A (en) * | 2021-02-08 | 2022-08-16 | 中国航发商用航空发动机有限责任公司 | Aeroengine sound lining device and aeroengine |
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Address after: 110869 No. 16 A Development Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: Shenyang Blower Works Group Corp. Patentee after: SHENYANG TURBO MACHINERY Co.,Ltd. Address before: 110869 No. 16 A Development Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee before: SHENYANG BLOWER WORKS Group Corp. Patentee before: SHENYANG TURBO MACHINERY Co.,Ltd. |