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1. WO2020108584 - ACTIVATED CARBON SOUND ABSORPTION MATERIAL AND SOUND GENERATING APPARATUS

Publication Number WO/2020/108584
Publication Date 04.06.2020
International Application No. PCT/CN2019/121810
International Filing Date 29.11.2019
IPC
G10K 11/162 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
162Selection of materials
H04R 9/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
9Transducers of moving-coil, moving-strip, or moving-wire type
06Loudspeakers
CPC
G10K 11/162
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
162Selection of materials
G10K 11/165
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
162Selection of materials
165Particles in a matrix
G10K 11/168
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
162Selection of materials
168Plural layers of different materials, e.g. sandwiches
Applicants
  • 歌尔股份有限公司 GOERTEK INC. [CN]/[CN]
Inventors
  • 惠冰 HUI, Bing
  • 凌风光 LING, Fengguang
  • 李春 LI, Chun
  • 张成飞 ZHANG, Chengfei
  • 刘春发 LIU, Chunfa
Priority Data
201811447854.929.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ACTIVATED CARBON SOUND ABSORPTION MATERIAL AND SOUND GENERATING APPARATUS
(FR) MATÉRIAU D'ABSORPTION ACOUSTIQUE À BASE DE CHARBON ACTIF ET APPAREIL DE GÉNÉRATION DE SON
(ZH) 一种活性炭吸音材料和发声装置
Abstract
(EN)
An activated carbon sound absorption material and a sound generating apparatus. The activated carbon material comprises three elements, i.e., carbon, hydrogen, and oxygen; the mass ratio of the carbon element is greater than or equal to 60 wt%; the mass ratio of carbon to oxygen in the activated carbon sound absorption material is greater than or equal to 3; the activated carbon sound absorption material contains a two-dimensional graphite layer and/or a three-dimensional graphite microcrystal; the activated carbon sound absorption material has a loose pore structure inside, the pore structure comprises nano-scale micropores and mesopores, and the pore diameter of the mesopores is greater than that of the micropores. The activated carbon sound absorption material can be used for reducing the resonant frequency of a sound generating apparatus.
(FR)
L'invention concerne un matériau d'absorption acoustique à base de charbon actif et un appareil de génération de son. Le matériau à base de charbon actif comprend trois éléments, à savoir du carbone, de l'hydrogène et de l'oxygène. Le rapport en masse de l'élément carbone est supérieur ou égal à 60 % en poids. Le rapport en masse du carbone à l'oxygène dans le matériau d'absorption acoustique à base de charbon actif est supérieur ou égal à 3. Le matériau d'absorption acoustique à base de charbon actif contient une couche de graphite bidimensionnelle et/ou un microcristal de graphite tridimensionnel. Le matériau d'absorption acoustique à base de charbon actif présente une structure à pores lâches à l'intérieur, la structure à pores comprend des micropores et des mésopores à l'échelle nanométrique, et le diamètre de pore des mésopores est supérieur à celui des micropores. Le matériau d'absorption acoustique à base de charbon actif peut être utilisé pour réduire la fréquence de résonance d'un appareil de génération de son.
(ZH)
一种活性炭吸音材料和发声装置,活性炭材料包括碳、氢、氧三种元素,其中碳元素质量占比大于或等于60wt%,所述活性炭吸音材料中的碳氧质量比大于或等于3,所述活性炭吸音材料含有二维石墨层和/或三维石墨微晶,所述活性炭吸音材料的内部具有疏松的孔道结构,所述孔道结构包括纳米级的微孔和介孔,所述介孔的孔径大于微孔的孔径。该活性炭吸音材料可以用于降低发声装置的谐振频率。
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