ACOUSTIC DEVICE

• Main Authors: BOLTON JOHN STUART, HERDTLE THOMAS, HANSCHEN THOMAS P, MARTINSON PAUL A, LEE SEUNGKYU, ALEXANDER JONATHAN H, GERDES RONALD W
• Format: Patent
• Language: English; Korean
• Published: 12.05.2017
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; BLASTING; COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; SOUND-PRODUCING DEVICES; STEAM ENGINES; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

제공된 음향 장치는 팽창 챔버를 한정하는 외부 하우징, 및 팽창 챔버를 통해 연장되고 팽창 챔버를 중앙 챔버와 중앙 챔버에 인접한 주변 챔버로 구획하는 벽을 포함하고, 입구 및 출구는 중앙 챔버와 연통하고, 벽은 중앙 챔버와 팽창 챔버로의 그리고 그들로부터의 공기 이동을 허용하도록 관통 형성되는 복수의 개구를 포함하며, 복수의 개구는 100 MKS 레일(Rayl) 내지 5000 MKS 레일 범위의 평균 유동 저항을 제공하도록 크기가 설정된다. 음향 장치는, 유리하게는, 팽창 챔버를 가로지른 압력 강하를 감소시키기 위해 공기 유동을 간소화하면서 상당한 음향 감쇠를 나타낸다. Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.