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549 条记录 (耗时 0.016 秒)

    Multilouver roughness silencer
    71.
    发明授权
    Multilouver roughness silencer 失效
    MULTILOUVER ROUGHNESS SILENCER

    公开(公告)号：US3613828A

    公开(公告)日：1971-10-19

    申请号：US3613828D

    申请日：1970-07-27

    申请人： TENNECO INC

    发明人： DUBOIS BERT

    IPC分类号： F01N1/00 ,  F01N1/04 ,  F01N1/10

    CPC分类号： F01N1/003

    摘要： A muffler has a sinuous louvered partition extending longitudinally of the casing and alongside a straight-through gas flow tube to provide a series of expansion chambers that are in parallel with the gas flow through the muffler.

    Sound attenuating device
    73.
    发明授权
    Sound attenuating device 失效
    声音衰减设备

    公开(公告)号：US3561561A

    公开(公告)日：1971-02-09

    申请号：US3561561D

    申请日：1969-11-28

    申请人： JOHN B TRAINOR

    发明人： TRAINOR JOHN B

    IPC分类号： F01N1/08 ,  F01N1/10 ,  F16L55/033 ,  F01N7/18

    CPC分类号： F16L55/033 ,  F01N1/08 ,  F01N1/10

    摘要： This disclosure relates to improved sound attenuating devices for exhaust gas, such as is presently utilized in various industries to muffle the sound of pneumatically operated industrial equipment. The basic embodiment includes an exhaust entrance tube, a shell encircling the tube defining a gas expansion chamber or plenum having exhaust slots, and a screen overlying the exhaust slots. The tube and shell are integrally formed of plastic to improve the sound attenuating characteristics and reduce the safety hazard of separate secured parts. The second disclosed embodiment includes a sound absorbing medium in the form of a cellular disc opposite the gas exit of the tube and a floating perforated disc located between the tube exit and the sound absorbing medium. A baffle deflector is also provided at the gas exit of the tube, deflecting the gas into the sound absorbing medium and then into the annular expansion chamber surrounding the tube. The third embodiment includes a metering valve having a nonrotatable, axially shiftable cylindrical plug telescopically received in the gas exit end of the tube. The metering plug has a plurality of longitudinal Vshaped tapered slots increasing in width toward the plug end received in the tube, accurately controlling the flow of gas.