Sound-absorbing and heat-insulating duct
    1.
    发明授权
    Sound-absorbing and heat-insulating duct 失效
    吸声隔热管道

    公开(公告)号:US06250339B1

    公开(公告)日:2001-06-26

    申请号:US09493197

    申请日:2000-01-28

    IPC分类号: F16L1110

    摘要: There is provided a sound-absorbing and a heat-insulating duct comprising a nonwoven cloth layer 1, a reinforcing core 2, a foam strip layer 3, a bonding resin 4 and resin-coating layer 5. The nonwoven cloth layer 1 is formed by wound spirally a nonwoven cloth 10 into a tube-like shape in which adjacent side edges of the adjacent nonwoven cloths 10 are brought in abutment against or lapped with each other so as to form a bonding portion 1a. The reinforcing core 2 made of hard synthetic resin material is wound spirally on the bonding portion 1a while a surface of the reinforcing core 2 being brought into contact with the nonwoven cloth 10 is welded or bonded to the nonwoven cloth 10. The foam strip layer 3 is formed by wound spirally a foam resin strip 30 having a width approximately equal to a width of the nonwoven cloth 10. Both adjacent edges 3a, 3b of the foam resin strip are disposed on adjacent reinforcing cores 2, 2 respectively. The bonding resin 4 is applied to a side surface 30B of the foam strip 30 and a part 2A of the reinforcing core 2. The resin-coating layer 5 is provided to cover an outer circumferential surface of the foam strip layer 3. Accordingly, it is possible to provide a sound-absorbing and heat-insulating functions, which is suitable for use as an air-blow duct, and which is suitable for continuous production so that the duct can be mass-produced inexpensively.

    摘要翻译: 提供了一种吸音和绝热导管,其包括无纺布层1,增强芯2,泡沫带层3,粘合树脂4和树脂涂层5.无纺布层1由 将非织造布10螺旋地缠绕成管状,其中相邻的无纺布10的相邻侧边缘彼此抵接或搭接以形成接合部分1a。 将由硬质合成树脂材料制成的加强芯2螺旋地缠绕在接合部1a上,同时与非织造织物10接触的加强芯2的表面被焊接或粘合到无纺布10上。泡沫带层3 通过螺旋缠绕具有大致等于无纺布10的宽度的宽度的泡沫树脂条30形成。泡沫树脂条的相邻边缘3a,3b分别设置在相邻的加强芯2,2上。 接合树脂4被施加到泡沫条30的侧表面30B和加强芯2的部分2A。树脂涂层5被设置成覆盖泡沫带层3的外周表面。因此, 可以提供适合用作吹风管道的吸音和隔热功能,并且适合于连续生产,从而可以廉价地批量生产管道。

    Pipe-end-connecting joint
    2.
    发明授权
    Pipe-end-connecting joint 失效
    管端连接接头

    公开(公告)号:US06659510B1

    公开(公告)日:2003-12-09

    申请号:US09383982

    申请日:1999-08-26

    IPC分类号: F16L3300

    摘要: A pipe-end-connecting joint comprisse a nipple 1 inserted in the pipe end, a holder 2 for tightening the outer circumference of the pipe end, and an elastic packing 3 divided into half parts and attached in the holder 2. The nipple 1 includes a tubular portion 11 provided in one longitudinal end side thereof so as to be inserted in the pipe end, a connection portion 12 provided in the other longitudinal end side thereof so as to be connected to another joint, and a flange portion 13 provided in a longitudinal intermediate portion thereof so as to protrude outward. The holder 2 is divided longitudinally into two split parts 2A and 2B so that each of the two split parts 2A and 2B has an semicircularly formed inner circumferential surface 21, and each of the two split parts 2A and 2B has one longitudinal end side in which one of the half parts of the elastic packing is mounted, and has the other longitudinal end side in which a ring-like groove 23 is formed so as to be fitted to the flange portion 13, and further has a longitudinally intermediate portion between the one and the other longitudinal end sides in which a spiral corrugated portion 22 is formed along the outer circumferential surface of the pipe P, the spiral corrugated portion 22 having a spiral protruding portion 24 an inner diameter of which is smaller than an outer diameter of a trough portion r of the pipe P, the two split parts 2A and 2B having holes for insertion of connection bolts.

    摘要翻译: 管端连接接头包括插入管端的接头1,用于紧固管端外周的保持器2和分成半部分并附接在保持器2中的弹性衬垫3。 一个管状部分11,其设置在一个纵向端侧以插入管端;连接部分12,设置在另一个纵向端侧,以便连接到另一个接头;以及凸缘部分13, 其纵向中间部分向外突出。 保持器2纵向分成两个分割部分2A和2B,使得两个分割部分2A和2B中的每一个具有半圆形的内圆周表面21,并且两个分割部分2A和2B中的每一个分别具有一个纵向端侧,其中, 安装弹性衬垫的一半部分,并且另一个纵向端侧形成有环形槽23,以便与凸缘部分13配合,并且还具有一个纵向中间部分 以及沿着管P的外周面形成有螺旋波纹部22的另一纵向端侧,螺旋形波纹状部22具有内径小于槽P的外径的螺旋形突出部24 管P的部分r,两个分割部分2A和2B具有用于插入连接螺栓的孔。