Noise reducing apparatus
    21.
    发明授权
    Noise reducing apparatus 失效
    降噪装置

    公开(公告)号:US4858720A

    公开(公告)日:1989-08-22

    申请号:US120437

    申请日:1987-11-13

    IPC分类号: G10K11/30

    CPC分类号: G10K11/30

    摘要: A noise reducing apparatus is disclosed, comprising a lens-type hollow body consisting of a plurality of inclined hollow tubular passages. The lens-type hollow body has a plane incident surface and a curved emission surface and the length L.sub.2 of the hollow tubular passage is optimized in accordance with relevant dimensional parameters of setting of the lens-type hollow body in a sound field, to reduce noise from a spot sound source efficiently.

    摘要翻译: 公开了一种降噪装置,包括由多个倾斜的中空管状通道组成的透镜型中空体。 透镜型中空体具有平面入射面和弯曲发射面,并且根据声场中的透镜型中空体的相关尺寸参数优化中空管状通道的长度L2,以减少噪声 从一个点音源有效地。

    LOW-NOISE MACHINE PACKAGE
    23.
    发明申请
    LOW-NOISE MACHINE PACKAGE 有权
    低噪声机包装

    公开(公告)号:US20080179135A1

    公开(公告)日:2008-07-31

    申请号:US12023083

    申请日:2008-01-31

    IPC分类号: F01N1/10

    CPC分类号: F01N1/10 F01N2590/00

    摘要: A conventional machine package faces problems concerned with costs, weight, etc. and also a problem of antinomy that an attempt to enhance the noise reducing performance increases the airflow resistance and then deteriorates the cooling performance. Providing a sound absorbing structure with the heat radiation performance ensured within a practical range and then with considerably improved noise reducing effect achieves a low-noise machine package with a downsized casing and a reduced cooling fan power. There is provided a sound absorbing structure having a plurality of polyester fiber sound absorbing cylinders each formed into a circular-cylindrical shape, formed of a base material of polyester fiber whose surface is combined and covered with polymer nonwoven fabric of polyester fiber or the like, and arranged at a support member in at least either of a suction port and an exhaust port in such a manner that long axes of the sound absorbing cylinders intersect substantially perpendicularly with a flow direction of air flowing through the suction port or the exhaust port. This makes it possible to reduce noise while controlling the airflow resistance minimum, thus achieving downsizing of a cooling fan and reduction of a cooling fan power.

    摘要翻译: 常规的机器包装面临成本,重量等问题,并且还存在着提高降噪性能的尝试增加了气流阻力,从而降低冷却性能的问题。 提供具有散热性能的吸音结构,确保在实用范围内,然后显着改善降噪效果,实现了具有小型外壳的低噪声机器封装和降低的冷却风扇功率。 提供了一种吸音结构,其具有多个聚酯纤维吸音筒,每个聚酯纤维吸音筒形成圆筒形,由表面组合并被聚酯纤维等的聚合物无纺布覆盖的聚酯纤维的基材形成, 并且以这样的方式布置在吸入口和排气口中的至少一个中的支撑构件处,使得吸音缸的长轴与流过吸入口或排气口的空气的流动方向大致垂直地相交。 这使得可以在控制气流阻力最小的同时降低噪声,从而实现冷却风扇的小型化并降低冷却风扇功率。

    Noise reducing apparatus
    24.
    发明授权
    Noise reducing apparatus 失效
    噪音降低装置

    公开(公告)号:US5168130A

    公开(公告)日:1992-12-01

    申请号:US376091

    申请日:1989-07-06

    CPC分类号: G10K11/175

    摘要: A noise reducing apparatus comprising a first passageway group consisting of a plurality of first passageways aligned in parallel with each other for forming a first flat wave A by sound waves having a first same phase passed through each first passageway from a sound source, and a second passageway group consisting of a plurality of second passageways aligned in parallel with each other for forming a second flat wave B by sound waves being a second same phase passed through each second passageway from the sound source, said first passageway group having positioned above said second passageway group, and the phase of said first flat wave being advanced by a phase difference of 240.degree..+-.60.degree. with respect to the phase of said second flat wave to thereby reduce noise emitted from the sound source by interference of the first and second flat waves A and B.

    摘要翻译: 一种降噪装置,包括由多个彼此平行排列的第一通道组成的第一通道组,用于通过具有从声源穿过每个第一通道的第一相位相位的声波形成第一平坦波A,以及第二通道 通道组由多个彼此平行排列的第二通道组成,用于通过声波形成第二平坦波B,声波是从声源穿过每个第二通道的第二相同相位,所述第一通道组位于所述第二通道 并且相对于所述第二平面波的相位,所述第一平坦波的相位相对于相位差240°+/- 60°前进,从而通过第一和第二平面波的干涉减少从声源发出的噪声 平波A和B

    Sound insulating apparatus
    26.
    发明授权
    Sound insulating apparatus 失效
    隔音设备

    公开(公告)号:US4605091A

    公开(公告)日:1986-08-12

    申请号:US742508

    申请日:1985-06-07

    CPC分类号: E04B1/84

    摘要: A sound insulating apparatus. Heretofore, the sound insulating apparatus to be installed in a ventilator, etc. of an architecture requires a long duct, and becomes large in its size and heavy in its weight, and is not sufficient in its sound absorbing performance.The sound insulating apparatus according to the present invention comprises a closed container including a first opening and a second opening, and having a sound absorbing member at its internal surface. The first opening is provided with a sound converging means for converging a sound wave coming into the closed container through the first opening to a predetermined place within the closed container. The second opening is formed in a place away from the predetermined place.This sound insulating apparatus is installed in a communicating port for intercommunicating two spaces partitioned with respect to each other, such as, for example, a ventilator of an architecture, with the first opening facing toward one space and the second opening facing toward the other space.

    摘要翻译: 隔音装置。 迄今为止,安装在建筑物的呼吸机等中的隔音装置需要长的管道,并且其尺寸变大并且其重量很大,并且其吸声性能不足。 根据本发明的隔音装置包括封闭容器,其包括第一开口和第二开口,并且在其内表面具有吸音构件。 第一开口设置有用于将通过第一开口进入密闭容器的声波会聚到封闭容器内的预定位置的声音会聚装置。 第二开口形成在远离预定位置的位置。 这种隔音装置安装在用于相互连通的两个相互间隔的空间的连通端口中,例如建筑物的通风机,其中第一开口朝向一个空间,第二开口朝向另一个空间 。

    Heat-set type printing inks
    27.
    发明授权
    Heat-set type printing inks 失效
    热定型印刷油墨

    公开(公告)号:US4388427A

    公开(公告)日:1983-06-14

    申请号:US301152

    申请日:1981-09-11

    CPC分类号: C09D11/02

    摘要: A heat-set type printing ink comprising as the vehicle a non-aqueous dispersion prepared by dissolving a resin in a hydrocarbon solvent-containing solvent boiling at not lower than 170.degree. C. to form a resin solution and polymerizing at least one kind of vinyl monomer in said resin solution to obtain a non-aqueous dispersion. In one embodiment, the thus obtained non-aqueous dispersion may be incorporated with a resin to obtain a modified non-aqueous dispersion.

    摘要翻译: 一种热固型印刷油墨,其包含通过将树脂溶解在沸点不低于170℃的含烃溶剂的溶剂中形成树脂溶液并聚合至少一种乙烯基的非水性分散体作为载体, 单体在所述树脂溶液中以获得非水分散体。 在一个实施方案中,由此获得的非水分散体可以与树脂混合以获得改性的非水分散体。