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    Screw compressor with slide valve movement preventing structure
    3.
    发明授权
    Screw compressor with slide valve movement preventing structure 失效
    螺杆压缩机带滑阀运动防止结构

    公开(公告)号：US4913634A

    公开(公告)日：1990-04-03

    申请号：US224236

    申请日：1988-07-25

    申请人： Kimio Nagata ,  Shigekazu Nozawa ,  Minetoshi Izushi

    发明人： Kimio Nagata ,  Shigekazu Nozawa ,  Minetoshi Izushi

    IPC分类号： F04C18/16 ,  F04C28/12

    CPC分类号： F04C28/125 ,  Y10S418/01

    摘要： A screw compressor in which a pair of screw rotors supported by bearings and accommodated in a casing act to compress a gas and in which a slide valve disposed between an inner wall of the casing and the pair of screw rotors is capable of moving axially while maintaining a small gap between itself and the outer peripheries of the screw rotors, the rate of gas flow bypassed to an inlet port during compression being regulated by axially moving the slide valve. The screw compressor has: a side cover in which bearing for supporting the pair of screw rotors on the discharge side and a slide valve driving hydraulic means are incorporated and which is disposed on the discharge side of the screw rotors; a discharge axial port formed in the side cover; and at least one projection continuous with an opening edge of the discharge axial port and in contact with a semi-circular surface of the slide valve facing in the radial direction thereof, the projection acting to limit the radial movement of the slide valve while the slide valve is moving in contact with the top end of the projection.

    摘要翻译： 一种螺旋式压缩机，其中一对由轴承支撑并容纳在壳体中的螺杆转子用于压缩气体，并且其中设置在壳体的内壁和一对螺杆转子之间的滑阀能够轴向移动，同时保持 在其自身与螺旋转子的外周之间的小间隙，通过轴向移动滑阀来调节在压缩过程中旁路到入口的气流的速率。 螺杆式压缩机具有：侧盖，其内装有用于支撑排出侧的一对螺杆转子的轴承和滑阀驱动液压装置，并且设置在螺杆转子的排出侧; 形成在所述侧盖中的排出轴向端口; 以及与所述排出轴向端口的开口边缘连续并且与所述滑阀的在其径向方向上的半圆形表面接触的至少一个突起，所述突出部用于限制所述滑阀的径向移动，同时所述滑块 阀正在与突起的顶端接触。

    Screw compressor
    5.
    发明授权
    Screw compressor 失效
    螺杆压缩机

    公开(公告)号：US4878820A

    公开(公告)日：1989-11-07

    申请号：US194917

    申请日：1988-05-17

    申请人： Motomichi Doi ,  Minetoshi Izushi ,  Kazuhiko Kawaike ,  Masayuki Urashin

    发明人： Motomichi Doi ,  Minetoshi Izushi ,  Kazuhiko Kawaike ,  Masayuki Urashin

    IPC分类号： F04C18/16 ,  F04C29/00 ,  F04C29/02 ,  F16C17/26

    CPC分类号： F16C17/26 ,  F04C29/0021 ,  F16C33/106

    摘要： A screw compressor comprises a casing and a pair of male and female rotors respectively having herical teeth and grooves formed in their outer peripheries. The rotors are arranged within the casing in meshing relation to each other through the teeth and grooves. Each rotor is rotatably supported by a pair of first and second radial plain bearings and a thrust plain bearing which is arranged at an end of the rotor shaft and adjacent the second radial plain bearing. Each of the thrust plain bearings is of dynamic-pressure type in which with rotation of a corresponding one of the shafts of the respective rotors, pressure is applied to lubricant by sliding movement of the thrust plain bearing to produce an anti-thrust force. The lubricant for each of the second radial plain bearings and for a corresponding one of the thrust plain bearings is fed to a space between the second radial plain bearing and the thrust plain bearing, and is distributed to the second radial plain bearing more in amount than that fed to the thrust bearing due to a difference between flow resistance with which the lubricant passes through the second radial plain bearing and flow resistance with which the lubricant passes through the thrust plain bearing.

    摘要翻译： 螺杆式压缩机包括壳体和一对分别具有在其外周部形成的齿状齿和凹槽的阳和阴转子。 转子通过齿和凹槽以彼此啮合的关系布置在壳体内。 每个转子由一对第一和第二径向滑动轴承和推力滑动轴承可旋转地支撑，所述推力滑动轴承布置在转子轴的端部并与第二径向滑动轴承相邻。 每个推力滑动轴承都是动压型，其中通过相应转子的相应一个轴的旋转，通过推力滑动轴承的滑动运动将压力施加到润滑剂以产生抗推力。 每个第二径向滑动轴承和对应的一个推力滑动轴承的润滑剂被供给到第二径向滑动轴承和推力滑动轴承之间的空间，并且分配到第二径向滑动轴承的数量大于 由于润滑剂通过第二径向滑动轴承的流动阻力和润滑剂通过推力滑动轴承的流动阻力之间的差异而被馈送到推力轴承。

    Fin-tube type heat exchanger
    7.
    发明授权
    Fin-tube type heat exchanger 失效
    翅片式换热器

    公开(公告)号：US5360060A

    公开(公告)日：1994-11-01

    申请号：US986702

    申请日：1992-12-08

    申请人： Takeo Tanaka ,  Toshio Hatada ,  Masaaki Itoh ,  Takao Senshu ,  Naoto Katsumata ,  Yoshihiko Mochizuki ,  Hirokiyo Terada ,  Minetoshi Izushi ,  Minoru Sato ,  Hiromi Tsuji ,  Makoto Nagai

    发明人： Takeo Tanaka ,  Toshio Hatada ,  Masaaki Itoh ,  Takao Senshu ,  Naoto Katsumata ,  Yoshihiko Mochizuki ,  Hirokiyo Terada ,  Minetoshi Izushi ,  Minoru Sato ,  Hiromi Tsuji ,  Makoto Nagai

    IPC分类号： F28F1/32 ,  F28D1/04

    CPC分类号： F28F1/325

    摘要： A fin-tube type heat exchanger has parallel heat transfer tubes and a stack of a plurality of plate fins mounted on the tubes. Heat exchange is conducted between a first fluid flowing through the tubes and a second fluid flowing through the stack across each of the fins. Each fin has flat tube-mounting portions spaced in the longitudinal direction of the fin and formed with tube-mounting holes and a louver section disposed between each adjacent pair of tube-mounting portions. The louver section has elongated slats extending longitudinally of the fin and having side edges each spaced from an adjacent side edge of an adjacent slat. The slats are classified into two groups in respect of the cross-sectional shape. The slats of one group have generally flat cross-sections to reduce the resistance of the fin to the flow of the second fluid through the stack and are disposed in planes offset from the plane of the tube-mounting portions. The slats of the other group have V-shaped or inverted V-shaped cross-sections to increase stiffness of the fin in the longitudinal direction thereof.

    摘要翻译： 翅片管型热交换器具有平行的传热管和安装在管上的多个板翅片的堆叠。 在流过管的第一流体和跨过每个翅片流过堆叠的第二流体之间进行热交换。 每个翅片具有在翅片的纵向间隔开的扁平管安装部分，并且形成有管安装孔和布置在每个相邻的一对管安装部分之间的百叶窗部分。 百叶窗部分具有从翅片纵向延伸的细长板条，并且具有与相邻板条的相邻侧边缘间隔开的侧边缘。 板条在横截面形状上分为两组。 一组的板条具有大致平坦的横截面，以减小翅片对通过堆叠的第二流体的流动的阻力，并且设置在从管安装部分的平面偏移的平面中。 另一组的板条具有V形或倒V形横截面，以增加翅片在其纵向上的刚度。