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142 条记录 (耗时 0.014 秒)

    Gas compressor
    5.
    发明公开
    Gas compressor 失效

    公开(公告)号：EP1120568A2

    公开(公告)日：2001-08-01

    申请号：EP01201412.2

    申请日：1996-08-30

    申请人： SEIKO SEIKI KABUSHIKI KAISHA

    发明人： Ijiri, Makoto, c/o Seiko Seiki Kabushiki Kaisha ,  Tohyama,Tatsuhiro, c/o Seiko Seiki K.K.

    IPC分类号： F04C29/02 ,  F04C29/10

    CPC分类号： F04C29/021

    摘要： A valve element (20) is slidably provided midway in an oil passage (18). A discharged jet flow of high pressure refrigerant gas that is from a main body (3) side of the compressor is caused to act on an end face (20a) of the valve element (20). During the compression operation in which the discharged jet flow acts on the valve element (20), by the resulting pressure the valve element (20) is slid against the force of a spring (22) to thereby open the oil passage (18). During the stoppage of the compression operation in which the discharged jet flow is stopped, the valve element (20) is slid by the force of the spring (22) to thereby close the oil passage (18). Thereby, it is possible to prevent a lubricating oil from flowing from an oil pool (17) to a suction chamber (12) side through the oil passage (18) and sliding portions such as an F bearing (4a) and so prevent the occurrence of oil compression in the main body (3) of the compressor at the time of restarting the compression operation.
    Alternatively, or additionally, a communication passage (23) linking a discharge chamber (16) side to the suction chamber (12) side is provided. A valve element (22) is provided in the communication passage (23) and is arranged to open the communication passage (23) when the compression operation stops and to close the communication passage (23) when the compression operation starts. Thereby, it is possible to equalise the pressure in the discharge chamber (16) and the suction chamber (12) when the compression operation stops and so prevent a lubricating oil from flowing from the oil pool (17) to the suction chamber side (12) through the oil passage (18) and sliding portions and the occurrence of oil compression in the main body (3) of the compressor at the time of restarting the compression operation.

    Vacuum pump
    6.
    发明公开
    Vacuum pump 审中-公开

    公开(公告)号：EP0997646A3

    公开(公告)日：2001-05-30

    申请号：EP99308386.4

    申请日：1999-10-25

    申请人： SEIKO SEIKI KABUSHIKI KAISHA

    发明人： Nonaka, Manabu ,  Yamauchi, Akira

    IPC分类号： F04D19/04

    CPC分类号： F04D19/044

    摘要： To provide a vacuum pump capable of preventing damage to a rotor. Formed on a rotor (5) are: a thread groove (5b) grooved on the surface of the rotor (5); a spiral thread (5a) of which the downstream gas suction side terminal face is shifted to position to reach short, by a length H, of the downstream gas suction side end face of the rotor (5); and a slope (5e) along which the height of the thread (5a) at a thread terminal portion (5d) is decreased to level with the thread groove portion (5b).

    Turbomolecular pump
    7.
    发明公开
    Turbomolecular pump 有权
    涡轮分子泵

    公开(公告)号：EP0967395A3

    公开(公告)日：2001-04-11

    申请号：EP99304965.9

    申请日：1999-06-23

    申请人： SEIKO SEIKI KABUSHIKI KAISHA

    发明人： Kabasawa, Takashi

    IPC分类号： F04D19/04 ,  F04D29/54

    CPC分类号： F04D19/042 ,  F04D29/542

    摘要： A turbomolecular pump with stator blades having a structure in which deflections are not relatively occurred even if strong vibrations, etc. occurred, and breakage of the stator blades hardly occur even if the stator blades are brought into contact with rotor blades is disclosed. According to the present invention, a rib structure is employed to an inner ring portion (74) of a stator disc (72). As a specific rib structure, a variety of shapes such as a semicircular-shape, a semiellipse-shape, a U-shape, or an reversed V-shape in cross-section in a radial direction may be employed. Those shapes may be formed by means of a press machining, or by attaching with welding, etc. Engagement claws are formed at the connecting portions of two-divided stator blades (72). As a result, rigidity is enhanced at the two-divided portion. The pair of the stator blades (72) each consisting of two-divided stator blades are overlapped to form a two-layer structure, and the two-divided positions of the stator blades are shifted by 90° to each other. There is employed a structure in which even in the case where the stator blades (72) and the rotor blades (62) are brought into contact with each other, blades (75) of the stator discs and the blades (63) of the rotor discs are prevented from contacting with each other, with the result that the stator blades (72) and the rotor blades (62) are hardly damaged.

    摘要翻译： 公开了一种涡轮分子泵，该涡轮分子泵具有即使发生强振动等也不会相对地产生挠曲的构造的定子叶片，即使定子叶片与动叶片接触也难以发生定子叶片的破损。 根据本发明，对定子盘（72）的内环部分（74）采用肋结构。 作为具体的肋结构，可以采用半径方向的截面为半圆形，半椭圆形，U形，倒V字等各种形状。 这些形状可以通过冲压机加工，或者通过焊接等形成。在两个分开的定子叶片（72）的连接部分处形成接合爪。 结果，两分部分的刚性增强。 每个由两个分开的定子叶片组成的一对定子叶片（72）重叠以形成双层结构，并且定子叶片的两个分开的位置相互错开90°。 采用这样一种结构，即使在定子叶片（72）和转子叶片（62）相互接触的情况下，定子叶片的叶片（75）和转子的叶片（63） 防止盘彼此接触，导致定子叶片（72）和转子叶片（62）几乎不被损坏。

    Turbo molecular pump
    8.
    发明公开
    Turbo molecular pump 审中-公开
    涡轮分子泵

    公开(公告)号：EP0965761A3

    公开(公告)日：2001-04-11

    申请号：EP99304750.5

    申请日：1999-06-17

    申请人： SEIKO SEIKI KABUSHIKI KAISHA

    发明人： Yamauchi, Akira ,  Enosawa, Hideki

    IPC分类号： F04D19/04

    CPC分类号： F04D19/042 ,  F04D29/324 ,  F04D29/544

    摘要： A turbo molecular pump which has an improved exhaust performance with its reliability maintained is provided. In the turbo molecular pump, a spatial clearance between a proximal end of a rotor blade (9) and a stator blade (11) adjacent thereto is made smaller than a spatial clearance between a distal end of the rotor blade and the stator blade. In particular, preferably each of the upper and lower surfaces of the blades is contoured to present a flexure curve line. The contour along the flexure curve line includes not only a curvature but also a tapered configuration and a stepwise configuration.

    Turbomolecular pump
    9.
    发明公开
    Turbomolecular pump 审中-公开
    涡轮分子泵

    公开(公告)号：EP0979947A3

    公开(公告)日：2001-03-28

    申请号：EP99306359.3

    申请日：1999-08-11

    申请人： SEIKO SEIKI KABUSHIKI KAISHA

    发明人： Yamauchi, Akira ,  Nonaka, Manabu ,  Okada, Takashi

    IPC分类号： F04D19/04 ,  F04D29/58

    CPC分类号： F04D29/5853 ,  F04D19/042 ,  F04D29/542

    摘要： A turbomolecular pump is provided in which the structure of a stator blade (20) is improved for cooling rotor blades (2), thereby achieving a higher thermal conduction efficiency. The arrangement provides contact surfaces of the stator blades (20) and stator blade spacers (22) to be engaged/crushed upon assembling the pump.

    摘要翻译： 提供一种涡轮分子泵，其中改进了定子叶片（20）的结构以冷却转子叶片（2），由此实现更高的热传导效率。 该装置提供了在组装泵时接合/破碎的定子叶片（20）和定子叶片间隔件（22）的接触表面。

    Magnetic bearing device
    10.
    发明公开
    Magnetic bearing device 审中-公开
    磁轴承装置

    公开(公告)号：EP1072805A2

    公开(公告)日：2001-01-31

    申请号：EP00306104.1

    申请日：2000-07-18

    申请人： SEIKO SEIKI KABUSHIKI KAISHA

    发明人： Shi, Yongwei ,  Otachi, Yoshinobu

    IPC分类号： F16C32/04

    CPC分类号： F16C32/044

    摘要： To provide a magnetic bearing device which is not large in height in the axial direction, which is compact, and which is advantageous in terms of high-speed rotation. An upper axial electromagnet is provided in an upper portion of a stator and inside an upper radial position detection sensor and an upper radial electromagnet in the radial direction so as to face an upper target. On the other hand, a lower axial electromagnet is provided in a portion of the stator above a lower target and inside a lower radial electromagnet and a lower radial position detection sensor in the radial direction. The necessary axial length for the arrangement of the upper and lower axial electromagnets is not longer than that for the arrangement of the upper radial position detection sensor, the upper radial electromagnet, a motor, the lower radial position detection sensor, and the lower radial electromagnet.

    摘要翻译： 本发明的目的在于提供一种在轴向上的高度不大，且结构紧凑且在高速旋转方面有利的磁力轴承装置。 在定子的上部和上部径向位置检测传感器以及上部径向电磁铁的径向内侧，与上部靶相对地设有上部轴向电磁铁。 另一方面，下定子电磁体设置在位于下靶的上方的定子的一部分中以及径向下的下径向电磁体和下径向位置检测传感器的内部。 上部和下部轴向电磁铁的布置所需的轴向长度不大于上部径向位置检测传感器，上部径向电磁铁，电机，下部径向位置检测传感器和下部径向电磁体的布置的轴向长度 。