WO2020107365A1 - Source de bruit et procédé de réduction de bruit pour source de bruit - Google Patents

Source de bruit et procédé de réduction de bruit pour source de bruit Download PDF

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Publication number
WO2020107365A1
WO2020107365A1 PCT/CN2018/118396 CN2018118396W WO2020107365A1 WO 2020107365 A1 WO2020107365 A1 WO 2020107365A1 CN 2018118396 W CN2018118396 W CN 2018118396W WO 2020107365 A1 WO2020107365 A1 WO 2020107365A1
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WO
WIPO (PCT)
Prior art keywords
noise
layer
housing
coated onto
insulation layer
Prior art date
Application number
PCT/CN2018/118396
Other languages
English (en)
Inventor
XiaoKe PANG
Qing FENG
ZhePeng SU
Guoguang Liu
Original Assignee
Henkel Ag & Co. Kgaa
Henkel (China) Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henkel Ag & Co. Kgaa, Henkel (China) Co., Ltd. filed Critical Henkel Ag & Co. Kgaa
Priority to PCT/CN2018/118396 priority Critical patent/WO2020107365A1/fr
Priority to CN201910644998.1A priority patent/CN111256215A/zh
Priority to CN201921119914.4U priority patent/CN210624737U/zh
Publication of WO2020107365A1 publication Critical patent/WO2020107365A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/12—Vibration or noise prevention thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/242—Sound-absorbing material

Definitions

  • the present disclosure relates to the technical field of noise reduction, and more particularly to a noise source and a method of noise reduction for the noise source.
  • the noise level of the window type and split type air conditioners can still reach 50-70 dB.
  • PVC polyvinyl chloride
  • Another solution is to use a box structure to reduce the noise of the compressor by placing the compressor in the box structure with noise absorption and insulation materials on the inner surface thereof.
  • This solution is more expensive because it requires more steel plates. And for different sizes of compressors, different designs of the box structure are required.
  • the object of the present disclosure is to improve the existing structure of noise reduction and method of noise reduction for the noise source, and to provide a new type of noise source and a method of noise reduction for the noise source.
  • This kind of noise source and method of noise reduction for the noise source is easy to implement and has good performance of noise reduction.
  • a noise source specifically a compressor
  • a noise reduction layer provided onto the outer surface of the housing.
  • the noise reduction layer is coated onto the outer surface of the housing such that the noise reduction layer is adhered onto the outer surface of the housing and there is no gap between the noise reduction layer and the outer surface of the housing.
  • the noise reduction layer is coated onto the outer surface of the housing by spraying.
  • the noise reduction layer comprises a noise absorption layer, and the noise absorption layer is coated onto the outer surface of the housing.
  • the noise reduction layer comprises a noise insulation layer, and the noise insulation layer is coated onto the outer surface of the housing.
  • the noise reduction layer comprises at least one noise absorption layer and at least one noise insulation layer.
  • One of the at least one noise absorption layer is coated onto the outer surface of the housing and one of the at least one noise insulation layer is coated onto the one of the at least one noise absorption layer; or, one of the at least one noise insulation layer is coated onto the outer surface of the housing and one of the at least one noise absorption layer is coated onto the one of the at least one noise insulation layer.
  • the noise reduction layer comprises one noise absorption layer and one noise insulation layer.
  • the noise absorption layer is coated onto the outer surface of the housing and the noise insulation layer is coated onto the noise absorption layer, or the noise insulation layer is coated onto the outer surface of the housing and the noise absorption layer is coated onto the noise insulation layer.
  • the noise reduction layer comprises a first noise absorption layer, a second noise absorption layer, a first noise insulation layer and a second noise insulation layer.
  • the first noise absorption layer is coated onto the outer surface of the housing, the first noise insulation layer is coated onto the first noise absorption layer, the second noise absorption layer is coated onto the first noise insulation layer and the second noise insulation layer is coated onto the second noise absorption lay; or, the first noise insulation layer is coated onto the outer surface of the housing and the first noise absorption layer is coated onto the first noise insulation layer, the second noise insulation layer is coated onto the first absorption layer and the second absorption layer is coated onto the second insulation layer.
  • the noise absorption layer is made of polyurethane.
  • the noise insulation layer is made of polyuria.
  • the thickness of the noise absorption layer is greater than 2 mm and less than 200 mm.
  • the thickness of the noise insulation layer is greater than 0.2 mm and less than 10 mm.
  • a method of noise reduction for a noise source comprising: providing the noise source comprising a housing with an outer surface, and providing a noise reduction layer onto the outer surface of the housing.
  • the noise reduction layer is coated onto the outer surface of the housing such that the noise reduction layer is adhered onto the outer surface of the housing and there is no gap between the noise reduction layer and the outer surface of the housing.
  • the noise reduction layer is coated onto the outer surface of the housing by spraying.
  • the noise reduction layer comprises a noise absorption layer, and the noise absorption layer is coated onto the outer surface of the housing.
  • the noise reduction layer comprises a noise insulation layer, and the noise insulation layer is coated onto the outer surface of the housing.
  • the noise reduction layer comprises at least one noise absorption layer and at least one noise insulation layer.
  • One of the at least one noise absorption layer is coated onto the outer surface of the housing and one of the at least one noise insulation layer is coated onto the one of the at least one noise absorption layer, or one of the at least one noise insulation layer is coated onto the outer surface of the housing and one of the at least one noise absorption layer is coated onto the one of the at least one noise insulation layer.
  • the noise reduction layer comprises one noise absorption layer and one noise insulation layer.
  • the noise absorption layer is coated onto the outer surface of the housing and the noise insulation layer is coated onto the noise absorption layer, or the noise insulation layer is coated onto the outer surface of the housing and the noise absorption layer is coated onto the noise insulation layer.
  • the noise reduction layer comprises a first noise absorption layer and a second noise absorption layer and a first noise insulation layer and a second noise insulation layer.
  • the first noise absorption layer is coated onto the outer surface of the housing, the first noise insulation layer is coated onto the first noise absorption layer, the second noise absorption layer is coated onto the first noise insulation layer and the second noise insulation layer is coated onto the second noise absorption lay, or the first noise insulation layer is coated onto the outer surface of the housing and the first noise absorption layer is coated onto the first noise insulation layer, the second noise insulation layer is coated onto the first absorption layer and the second absorption layer is coated onto the second insulation layer.
  • the noise absorption layer is made of polyurethane.
  • the noise insulation layer is made of polyuria.
  • the thickness of the noise absorption layer is greater than 2 mm and less than 200 mm.
  • the thickness of the noise insulation layer is greater than 0.2 mm and less than 10 mm.
  • the outer surface of the housing of the noise source can be fully covered so that noise cannot spread from any uncovered area of the outer surface of the housing.
  • the noise reduction layer can be adhered onto the outer surface of the housing of the noise source by means of coating, or more specifically spraying, a noise reduction layer onto the outer surface of the housing of the noise source, so that no additional bonding material or layer is needed.
  • the material and the application is environmental friendly.
  • Fig. 1 is a cross section view of the housing of the compressor with one noise absorption layer and one noise insulation layer according to an exemplary embodiment of the present disclosure.
  • Fig. 2 is a cross section view of the housing of the compressor with two noise absorption layers and two noise insulation layers according to an exemplary embodiment of the present disclosure.
  • Fig. 3 is a diagram of SAC for the compressor according to an exemplary embodiment of the present disclosure.
  • Fig. 4 is a diagram of STL for the compressor according to an exemplary embodiment of the present disclosure.
  • Fig. 5 is a diagram of SAC for the compressor according to an exemplary embodiment of the present disclosure.
  • Fig. 6 is a diagram of STL for the compressor according to an exemplary embodiment of the present disclosure.
  • Fig. 7 is a diagram of SAC for the compressor according to an exemplary embodiment of the present disclosure compared with prior art.
  • Fig. 8 is a diagram of STL for the compressor according to an exemplary embodiment of the present disclosure compared with prior art.
  • Noise absorption layer is designed to absorb the sound energy, which is made up with sound absorption material.
  • the sound absorption material refers to porous material such as foam, fiber, etc.
  • SAC Solid Absorption Coefficient
  • the parameter SAC reflects the performance of sound absorption, which is defined as the ratio of sound energy absorbed by the material to the sound energy incident upon the material surface.
  • the mechanism of sound absorption is thermal and viscous dissipation of sound energy passing through the material.
  • the performance of an absorber depends on the micro structures such as cell or fiber size, ligament length, ligament thickness etc.
  • Noise insulation layer is designed to insulate the sound energy transmission from one side of the material to the other side.
  • the parameter STL Sound Transmission Loss
  • the parameter STL Sound Transmission Loss
  • the mass law of the material prevents incident sound waves from being transmitted through the material and minimizes the propagation of sound waves to the other side.
  • the compressor of the air conditioner includes a housing.
  • the housing includes an outer surface.
  • Fig. 1 is a cross section view of the housing of the compressor with one noise absorption layer and one noise insulation layer according to an exemplary embodiment of the present disclosure.
  • the housing 1 of the air conditioner is in the form of a metal shell.
  • a noise reduction layer is provided onto the outer surface of the housing.
  • the noise reduction layer is coated onto the outer surface of the housing such that the noise reduction layer is adhered onto the outer surface of the housing and there is no gap between the noise reduction layer and the outer surface of the housing.
  • the noise reduction layer includes one noise absorption layer 2 and one noise insulation layer 3.
  • the noise absorption layer 2 is coated onto the outer surface of the housing 1 and the noise insulation layer 3 is coated onto the noise absorption layer 2.
  • the noise reduction layer also includes one noise absorption layer and one noise insulation layer, but the noise insulation layer is coated onto the outer surface of the housing and the noise absorption layer is coated onto the noise insulation layer.
  • the noise reduction layer includes at least one noise absorption layer and at least one noise insulation layer.
  • One of the at least one noise absorption layer is coated onto the outer surface of the housing and one of the at least one noise insulation layer is coated onto the one of the at least one noise absorption layer, or one of the at least one noise insulation layer is coated onto the outer surface of the housing and one of the at least one noise absorption layer is coated onto the one of the at least one noise insulation layer.
  • Fig. 2 is a cross section view of the housing of the compressor with two noise absorption layers and two noise insulation layers according to an exemplary embodiment of the present disclosure.
  • the noise reduction layer includes two noise absorption layers and two noise insulation layers. More specifically, the noise reduction layer includes a first noise absorption layer 4 and a second noise absorption layer 5 and a first noise insulation layer 6 and a second noise insulation layer 7.
  • the first noise absorption layer 4 is coated onto the outer surface of the housing 1
  • the first noise insulation layer 6 is coated onto the first noise absorption layer 4
  • the second noise absorption layer 5 is coated onto the first noise insulation layer 6 and the second noise insulation layer 7 is coated onto the second noise absorption lay 5.
  • the order of the noise absorption layer and the noise insulation layer is not limiting.
  • the first noise insulation layer is coated onto the outer surface of the housing and the first noise absorption layer is coated onto the first noise insulation layer
  • the second noise insulation layer is coated onto the first absorption layer and the second absorption layer is coated onto the second insulation layer.
  • the noise reduction layer includes a single layer. In some embodiments, the noise reduction layer includes a noise absorption layer, and the noise absorption layer is coated onto the outer surface of the housing. In some embodiments, the noise reduction layer comprises a noise insulation layer, and the noise insulation layer is coated onto the outer surface of the housing.
  • the coating of the noise reduction layer, the coating of the noise absorption layer and the coating of the noise insulation layer can be implemented by spraying.
  • the materials of the noise absorption layer and the noise insulation layer are commercially available.
  • the material of the noise absorption layer is a foam material made of polyurethane.
  • the polyurethane is made from a reactive formulation including a polyol part with an isocyanate part.
  • a process to make a flexible polyurethane foam is implemented by a spray equipment, which could spray the mixed liquid material onto the outer surface of the housing of the compressor substrate and foam in place to form a flexible foam.
  • the density of the foam is varied from 20kg/m 3 to 100kg/m 3 , which could provide different noise absorption performance.
  • the polyurethane is made by mixing a polyol part with an isocyanate part with a ratio of 2: 1 at room temperature.
  • the polyol part has an appearance of white viscous liquid with a viscosity of 500 ⁇ 2000 mPa ⁇ s and a density of 1.05 ⁇ 0.2 g/cm 3
  • the isocyanate part has an appearance of yellow brown liquid with a viscosity of 100 ⁇ 600 mPa ⁇ s and a density of 1.22 ⁇ 0.2 g/cm 3
  • the polyurethane after curing is a soft foam and has a milky white appearance. It has a density of 10 ⁇ 100 g/cm 3 and a rebounce which is greater than or equal to 55%.
  • the material of the noise insulation layer is a non-foam material made of polyurea.
  • the polyurea is made from two reactive raw materials, isocyanate with amines and water.
  • the polyurea is normally coated by a spray process due to its fast speed of reaction and curing.
  • the cured polyurea layer could be used as a noise insulation layer because of its high density and structure.
  • the density of polyurea is normally from 900kg/m 3 to 1200kg/m 3 .
  • the polyurea is made by mixing isocyanate with amines with a ratio of 1: 1 at room temperature.
  • the isocyanate part has an appearance of black liquid with a viscosity of 1500 ⁇ 3000 mPa ⁇ s and a density of 0.90 ⁇ 1.25 g/cm 3
  • the amines part has an appearance of brown liquid with a viscosity of 100 ⁇ 500 mPa ⁇ s and a density of 0.90 ⁇ 1.25 g/cm 3
  • the polyurea after curing is a hard barrier and has a black and grey appearance. It has a tacky free time of 3-5 minutes and a hardness from Shore A 60 to Shore D 60.
  • the new combined noise reduction layer by the noise absorption layer in form of polyurethane foam and the noise insulation layer in form of polyurea has the following advantages: a spray process could make a self-bonding effect between the noise reduction layer and the outer surface of the housing of the compressor; the interface between polyurethane foam and polyurea also performs a very good adhesion; there is no gap to allow the sound or the noise through the materials, acoustic or noise reduction performance is better.
  • the thickness of the noise absorption layer is greater than 2 mm and less than 200 mm, and the thickness of the noise insulation layer is greater than 0.2 mm and less than 10 mm.
  • the thickness of the first noise absorption layer and the second noise absorption layer respectively is greater than 2 mm and less than 200 mm, and the thickness of the first noise insulation layer and the second noise insulation layer respectively is greater than 0.2 mm and less than 10 mm. It should be understood that the thickness of the noise absorption layer and the noise insulation layer is not limited and could be customized as needed.
  • the noise reduction layer includes one noise absorption layer.
  • the noise absorption layer is made of polyurea and is coated onto the outer surface of the housing of the compressor by spraying process.
  • the noise absorption layer has a thickness of 4 mm, 8 mm and 12 mm.
  • Fig. 3 is a diagram of SAC (sound absorption coefficient) .
  • the SAC of the noise absorption layer increases with its thickness.
  • the SAC of the 4 mm noise absorption layer is weak, since its SAC is lower than 0.5 in all the frequency bands.
  • the SAC curves of 8 mm and 12 mm noise absorption layer are both close to 1 in high frequency bands. Therefore, it is suggested that the thickness of the absorber material is between 8 mm and 12 mm.
  • Fig. 4 is a diagram of STL (sound transmission loss) . As can be seen from the figure, The STL of the noise absorption layer increases with its thickness. And the STL curves of the noise absorption layer with three kinds of thickness are consistent.
  • the noise reduction layer includes one noise absorption layer and one noise insulation layer.
  • the noise absorption layer is made of polyurea and is coated onto the outer surface of the housing of the compressor by spraying process.
  • the noise insulation layer is made of polyurea and is coated onto the noise absorption layer by spraying process.
  • Such combination is named herein first noise absorption and then noise insulation combination.
  • another combination named herein first noise insulation and then noise absorption combination is provided, in which the noise insulation layer is made of polyurea and is coated onto the outer surface of the housing of the compressor by spraying process and the noise absorption layer is made of polyurea and is coated onto the noise insulation layer by spraying process.
  • the noise absorption layer has a thickness of 12 mm.
  • the noise insulation layer has a thickness of 0.8 mm, 1.2 mm and 1.9 mm.
  • Fig. 5 is a diagram of SAC.
  • the sound absorption performance of the first noise absorption and then noise insulation combination is better than the first noise insulation and then noise absorption combination, since the SAC curve of the solid line is obviously better than that of the dotted line.
  • Fig. 6 is a diagram of STL.
  • the sound insulation performance of the first noise absorption and then noise insulation combination is better than the first noise insulation and then noise absorption combination, since the STL curve of the dotted line is obviously better than that of the solid line.
  • the sound insulation performance of the noise reduction layer with one noise absorption layer and one noise insulation layer is better than the sound insulation performance of the noise reduction layer with one noise absorption layer.
  • the sound insulation performance of the noise reduction layer is better when the thickness of the noise insulation layer is larger. The influence of the thickness of the noise absorption layer on the sound insulation performance of the noise reduction layer is not obvious.
  • Fig. 7 is a diagram of SAC and Fig. 8 is a diagram of STL. It can be seen from the figures, the first noise absorption and then noise insulation combination has a better absorption performance than prior art, but has a comparable isolation performance with prior art.
  • the method of noise reduction for the compressor includes providing the compressor including a housing with an outer surface, providing a noise reduction layer onto the outer surface of the housing; wherein the noise reduction layer is coated onto the outer surface of the housing such that the noise reduction layer is adhered onto the outer surface of the housing and there is no gap between the noise reduction layer and the outer surface of the housing.
  • the noise reduction layer can include a noise absorption layer and/or a noise insulation layer.
  • the coating of the noise reduction layer, the coating of the noise absorption layer and the coating of the noise insulation layer can be implemented by spraying.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne une source de bruit et un procédé de réduction de bruit pour la source de bruit, plus précisément un compresseur, qui comprend un boîtier (1) comprenant une surface extérieure et une couche de réduction de bruit disposée sur la surface extérieure du boîtier (1). La couche de réduction de bruit est appliquée sur la surface extérieure du boîtier (1) de sorte que la couche de réduction de bruit est collée sur la surface extérieure du boîtier (1) et il n'y a pas d'espace entre la couche de réduction de bruit et la surface extérieure du boîtier (1). Il est facile de mettre en œuvre la source de bruit et le procédé de réduction de bruit pour la source de bruit au moyen d'un revêtement, ou plus précisément d'une pulvérisation, d'une couche de réduction de bruit sur la surface extérieure du boîtier (1) de la source de bruit.
PCT/CN2018/118396 2018-11-30 2018-11-30 Source de bruit et procédé de réduction de bruit pour source de bruit WO2020107365A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2018/118396 WO2020107365A1 (fr) 2018-11-30 2018-11-30 Source de bruit et procédé de réduction de bruit pour source de bruit
CN201910644998.1A CN111256215A (zh) 2018-11-30 2019-07-17 噪音源及噪音源的降噪方法
CN201921119914.4U CN210624737U (zh) 2018-11-30 2019-07-17 噪音源

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/118396 WO2020107365A1 (fr) 2018-11-30 2018-11-30 Source de bruit et procédé de réduction de bruit pour source de bruit

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WO2020107365A1 true WO2020107365A1 (fr) 2020-06-04

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WO (1) WO2020107365A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11634599B2 (en) 2014-11-24 2023-04-25 Ppg Industries Ohio, Inc. Coreactive materials and methods for three-dimensional printing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020107365A1 (fr) * 2018-11-30 2020-06-04 Henkel Ag & Co. Kgaa Source de bruit et procédé de réduction de bruit pour source de bruit
CN113182151A (zh) * 2021-04-28 2021-07-30 无锡吉兴汽车声学部件科技有限公司 一种汽车nvh声学用件的喷涂工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201134247Y (zh) * 2007-06-15 2008-10-15 王磊 隔吸音复合层结构
US20140008145A1 (en) * 2011-03-22 2014-01-09 San Shang Technology Co., Ltd. Sound absorbing and insulation composition material composition
CN106585062A (zh) * 2016-12-08 2017-04-26 广东信力科技股份有限公司 一种高消音复合物的制备方法
CN106679238A (zh) * 2017-01-06 2017-05-17 美的集团股份有限公司 隔音材料、压缩机以及空调
CN106837743A (zh) * 2017-01-06 2017-06-13 美的集团股份有限公司 压缩机
CN108413516A (zh) * 2018-04-23 2018-08-17 青岛海信日立空调系统有限公司 一种压缩机隔音罩、压缩机及空调室外机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205372802U (zh) * 2016-01-29 2016-07-06 广东美的制冷设备有限公司 分体立式室内机及空调系统
CN106382210A (zh) * 2016-10-31 2017-02-08 美的集团股份有限公司 压缩机、空调器室外机及空调器
WO2020107365A1 (fr) * 2018-11-30 2020-06-04 Henkel Ag & Co. Kgaa Source de bruit et procédé de réduction de bruit pour source de bruit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201134247Y (zh) * 2007-06-15 2008-10-15 王磊 隔吸音复合层结构
US20140008145A1 (en) * 2011-03-22 2014-01-09 San Shang Technology Co., Ltd. Sound absorbing and insulation composition material composition
CN106585062A (zh) * 2016-12-08 2017-04-26 广东信力科技股份有限公司 一种高消音复合物的制备方法
CN106679238A (zh) * 2017-01-06 2017-05-17 美的集团股份有限公司 隔音材料、压缩机以及空调
CN106837743A (zh) * 2017-01-06 2017-06-13 美的集团股份有限公司 压缩机
CN108413516A (zh) * 2018-04-23 2018-08-17 青岛海信日立空调系统有限公司 一种压缩机隔音罩、压缩机及空调室外机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11634599B2 (en) 2014-11-24 2023-04-25 Ppg Industries Ohio, Inc. Coreactive materials and methods for three-dimensional printing
US11920046B2 (en) 2014-11-24 2024-03-05 Ppg Industries Ohio, Inc. Coreactive materials and methods for three-dimensional printing

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CN210624737U (zh) 2020-05-26
CN111256215A (zh) 2020-06-09

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