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1. 发明授权

US07108492B2 Roots pump 失效
标题翻译：罗茨泵
公开(公告)号：US07108492B2
公开(公告)日：2006-09-19
申请号：US10848959
申请日：2004-05-18
申请人： Shinya Yamamoto , Mamoru Kuwahara , Mika Fujiwara , Nobuaki Hoshino
发明人： Shinya Yamamoto , Mamoru Kuwahara , Mika Fujiwara , Nobuaki Hoshino
IPC分类号： F01C1/30 , F03C2/00
CPC分类号： F04C18/126 , F04C23/001 , F04C2250/10 , F04C2280/02
摘要： A roots pump has a housing, a plurality of rotary shafts, a rotor, a confluent passage and a closed space. The housing forms therein a pump chamber. The rotary shafts are supported on the housing in parallel relation to each other. The rotor is mounted on each of the rotary shafts, and the rotors on any adjacent rotary shafts are in engagement with each other. A set of the engaged rotors is accommodated in the pump chamber. The confluent passage is formed along one crossing line of paired imaginary swept peripheral surfaces in one-to-one correspondence with the paired and engaged rotors. The closed space is formed in one-to-one correspondence with each of the paired rotors between the paired rotors and paired peripheral wall surfaces which form the pump chamber. The closed space initially joins the confluent passage from a terminal end thereof with rotation of the paired rotors.
摘要翻译：根泵具有壳体，多个旋转轴，转子，汇合通道和封闭空间。壳体在其中形成泵室。旋转轴彼此平行地支撑在壳体上。转子安装在每个旋转轴上，并且任何相邻旋转轴上的转子彼此接合。一组接合的转子容纳在泵室中。汇合通道沿着成对的虚拟扫描周边表面的一条交叉线与成对和接合的转子一一对应地形成。封闭空间与成型转子和形成泵室的一对周壁之间的成对转子中的每一个一一对应地形成。封闭空间最初从配合转子的旋转的终端连接汇合通道。

2. 发明授权

US07140846B2 Vacuum pump having main and sub pumps 失效
标题翻译：主泵和副泵的真空泵
公开(公告)号：US07140846B2
公开(公告)日：2006-11-28
申请号：US10391904
申请日：2003-03-19
申请人： Shinya Yamamoto , Satoru Kuramoto , Osamu Uchiyama , Daisuke Sato , Mika Fujiwara , Masahiro Kawaguchi , Mamoru Kuwahara , Nobuaki Hoshino , Ryosuke Koshizaka
发明人： Shinya Yamamoto , Satoru Kuramoto , Osamu Uchiyama , Daisuke Sato , Mika Fujiwara , Masahiro Kawaguchi , Mamoru Kuwahara , Nobuaki Hoshino , Ryosuke Koshizaka
IPC分类号： F04B3/00 , F04B5/00 , F04B25/00
CPC分类号： F04C25/02 , F04C18/126 , F04C18/16 , F04C23/001 , F04C23/005
摘要： A vacuum pump having a rotary shaft that is rotated by a drive source has a main pump and a sub pump. The main pump includes a pump chamber and a gas transferring body that is located in the pump chamber. The main pump is driven by the drive source through the rotary shaft for transferring gas to an exhaust space. The sub pump is connected to the exhaust space for partially exhausting the gas from the exhaust space. The sub pump is driven by the same drive source. The displacement volume of the sub pump is smaller than that of the main pump.
摘要翻译：具有由驱动源旋转的旋转轴的真空泵具有主泵和副泵。主泵包括位于泵室中的泵室和气体输送体。主泵由驱动源通过旋转轴驱动，用于将气体输送到排气空间。子泵连接到排气空间，以从排气空间部分排出气体。副泵由相同的驱动源驱动。副泵的排量体积小于主泵的排量。

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