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18 条记录 (耗时 0.019 秒)

    Displacement pump with internal compression
    3.
    发明授权
    Displacement pump with internal compression 有权
    排量泵内压

    公开(公告)号：US08876506B2

    公开(公告)日：2014-11-04

    申请号：US13408191

    申请日：2012-02-29

    申请人： Ralf Steffens

    发明人： Ralf Steffens

    IPC分类号： F04C18/16 ,  F04C29/04 ,  F04C18/08

    CPC分类号： F04C18/16 ,  F04C18/084 ,  F04C29/04 ,  F04C2220/12

    摘要： The invention relates to a dry-compressing dual-shaft rotary displacement screw spindle pump machine for delivering and compressing gases. The spindle rotor pair therein includes multiple stages, having a primary delivery thread, a secondary delivery thread and a gas outlet collector chamber therebetween. The primary delivery thread head circle diameter decreases in the gas outlet direction, while the foot circle diameter thereof increases correspondingly for an application-specific matching inner “integral” compression ratio. The secondary delivery thread nominal delivery direction is opposite to the primary delivery thread nominal delivery direction. The secondary delivery thread is implemented such that the actual gas flow direction is opposite to the nominal delivery direction thereof, and is always directed away from the gas outlet plenum, having a gas permeation under ambient pressure just as the space in the gearbox. A control gas delivery stage is additionally provided for very high operating pressures.

    摘要翻译： 本发明涉及一种用于输送和压缩气体的干压缩双轴旋转移位螺杆主轴泵机。 其中的主轴转子对包括多个级，其中具有主输出螺纹，二次输送螺纹和气体出口收集器室。 主输送螺纹头圆直径在气体出口方向上减小，而对于特定于应用的匹配内“积分”压缩比，其脚圆直径相应增加。 二次输送螺纹标称输送方向与主输送螺纹标称输送方向相反。 次级输送螺纹被实施为使得实际的气体流动方向与其标称输送方向相反，并且总是被引导离开气体出口压力室，其在环境压力下具有与齿轮箱中的空间一样的气体渗透。 另外为非常高的操作压力提供控制气体输送级。

    COMPRESSION REFRIGERATION MACHINE HAVING A SPINDLE COMPRESSOR
    5.
    发明申请
    COMPRESSION REFRIGERATION MACHINE HAVING A SPINDLE COMPRESSOR 审中-公开

    公开(公告)号：US20170089342A1

    公开(公告)日：2017-03-30

    申请号：US15316010

    申请日：2015-06-03

    申请人： Ralf Steffens ,  Steffen KLEIN

    发明人： Ralf Steffens

    IPC分类号： F04C29/04 ,  F04C23/00 ,  F04C28/08 ,  F04C18/14

    CPC分类号： F04C29/04 ,  F04C18/54 ,  F04C18/565 ,  F04C28/08 ,  F04C2270/19

    摘要： The invention relates to a spindle compressor without operating fluid in the working space with a 2-tooth spindle rotor and a 3-tooth spindle rotor in a surrounding compressor housing-and preferably non-parallel rotation axes of the two spindle rotors, in particular for use in compression refrigeration machines. In order to improve the degree of efficiency while providing flexible power adjustment, it is proposed according to the invention that a multi-stage spindle compressor be used as a refrigerant compressor, whose compressor housing and whose spindle rotors are cooled via a partial-flow branch-off of liquid refrigerant from the refrigerant main flow circuit, wherein the compressor housing is cooled in a controlled manner by means of refrigerant evaporation, with the refrigerant vapor being subsequently fed to the inlet, and that, for power adjustment, there are also post-inlet feeds into the working space in addition to the inlet feed, and also pre-outlet discharges in addition to the outlet discharge from the outlet space, each with their own regulating device.

    Displacement machine with electronic motor synchronization
    7.
    发明授权
    Displacement machine with electronic motor synchronization 失效
    位移机与电子电机同步

    公开(公告)号：US5767635A

    公开(公告)日：1998-06-16

    申请号：US553318

    申请日：1995-11-21

    申请人： Ralf Steffens ,  Andreas Salmen

    发明人： Ralf Steffens ,  Andreas Salmen

    IPC分类号： F04C18/02 ,  F04C28/08 ,  F04C28/28 ,  F04C29/00 ,  H02P5/50 ,  H02P5/46 ,  G05D13/62

    CPC分类号： F04C28/08 ,  F04C28/28 ,  F04C29/0085 ,  H02P5/50 ,  F04C2240/402

    摘要： In a displacement machine for compressible media having at least two rotors (14a-c) which are configured as profiled bodies and whose profiles engage with one another in the manner of gearwheels during rotation, the individual rotors are respectively driven by their own electric motors (9a-c) and are kept synchronous in rotational speed and angular position by electronic closed-loop and/or open-loop control units (1; 25a-c) in accordance with the transmission ratio of the displacer unit stage. The electronics can be employed for monitoring further operating data of the pump and also for matching the pump output by changing rotational speed. It can also be used as an overload protection. The rotational speeds and rotational attitudes of the rotors are controlled individually and independently of one another, the required attitude values being specified to the individual control units (25a-c) by means of a main control unit (1).

    摘要翻译： PCT No.PCT / EP94 / 01818 Sec。 371日期：1995年11月21日 102（e）1995年11月21日日期PCT PCT 1994年6月3日PCT公布。 公开号WO94 / 29596 日期1994年12月22日在具有至少两个转子（14a-c）的可压缩介质的移动机器中，其构造为成型体并且其轮廓在旋转期间以齿轮的方式彼此接合，各个转子分别由 它们自己的电动机（9a-c），并且根据排量器单元级的传动比，通过电子闭环和/或开环控制单元（1; 25a-c）在转速和角位置保持同步 。 该电子部件可用于监测泵的进一步操作数据，并且还用于通过改变转速匹配泵输出。 它也可以用作过载保护。 转子的旋转速度和旋转姿态被独立地彼此独立地控制，所需的姿态值通过主控制单元（1）被指定给各个控制单元（25a-c）。

    Rotor profile for a Roots vacuum pump
    8.
    发明授权
    Rotor profile for a Roots vacuum pump 失效
    ROTOR真空泵的转子轮廓

    公开(公告)号：US5152684A

    公开(公告)日：1992-10-06

    申请号：US750322

    申请日：1991-08-27

    申请人： Ralf Steffens

    发明人： Ralf Steffens

    IPC分类号： F04C18/18 ,  F04C18/12

    CPC分类号： F04C18/126

    摘要： A dual rotor Roots type vacuum pump has an improved rotor profile contour resulting in high area efficiency, high volumetric efficiency, reduced backstreaming and simplified economical manufacturing which yields a compact, cost effective pump.

    摘要翻译： 双转子罗茨式真空泵具有改进的转子轮廓轮廓，导致高面积效率，高体积效率，减少的回流和简化的经济制造，从而产生紧凑的成本效益的泵。

    Multistage rotary piston vacuum pump having sleeves to fix shaft positions
    9.
    发明授权
    Multistage rotary piston vacuum pump having sleeves to fix shaft positions 失效
    多级旋转活塞真空泵具有固定轴位置的套筒

    公开(公告)号：US4983107A

    公开(公告)日：1991-01-08

    申请号：US192559

    申请日：1988-05-11

    申请人： Ralf Steffens ,  Hans-Peter Kabelitz ,  Hanns-Peter Berges ,  Wolfgang Leier

    发明人： Ralf Steffens ,  Hans-Peter Kabelitz ,  Hanns-Peter Berges ,  Wolfgang Leier

    IPC分类号： F04C18/12 ,  F04C18/08 ,  F04C18/16 ,  F04C18/18 ,  F04C25/02 ,  F04C29/04

    CPC分类号： F04C18/082 ,  F04C29/04

    摘要： A twin-shaft vacuum pump includes a pump chamber, a pair of rotary pistons disposed in the pump chamber, and plates which laterally delimit the pump chamber, and a housing ring which peripherally delimits the pump chamber. In order to increase the ability of the pump to withstand thermal stresses, the housing ring and the rotary pistons are made of different materials, with the coefficient of expansion of the piston material being lower than the coefficient of expansion of the housing material. Other improvements include cooling of the lateral end plates, cooling of the rotors, and the provision of sleeves which serve to fix the position of the rotors on the shafts and which are composed of a material whose coefficient of expansion is lower than that of the rotor material.

    摘要翻译： 双轴真空泵包括泵室，设置在泵室中的一对旋转活塞和横向限定泵室的板，以及外围限定泵室的壳体环。 为了增加泵承受热应力的能力，壳体环和旋转活塞由不同的材料制成，活塞材料的膨胀系数低于壳体材料的膨胀系数。 其他改进包括冷却侧端板，冷却转子，以及提供套筒，用于将转子的位置固定在轴上，该套筒的膨胀系数低于转子的膨胀系数 材料。

    Spindle compressor using refrigerant cooling for housing and rotor
    10.
    发明授权
    Spindle compressor using refrigerant cooling for housing and rotor 有权

    公开(公告)号：US10337515B2

    公开(公告)日：2019-07-02

    申请号：US15316010

    申请日：2015-06-03

    申请人： Ralf Steffens ,  Steffen Klein

    发明人： Ralf Steffens

    IPC分类号： F04C18/54 ,  F04C18/56 ,  F04C28/08 ,  F04C29/04

    摘要： The invention relates to a spindle compressor without operating fluid in the working space with a 2-tooth spindle rotor and a 3-tooth spindle rotor in a surrounding compressor housing-and preferably non-parallel rotation axes of the two spindle rotors, in particular for use in compression refrigeration machines. In order to improve the degree of efficiency while providing flexible power adjustment, it is proposed according to the invention that a multi-stage spindle compressor be used as a refrigerant compressor, whose compressor housing and whose spindle rotors are cooled via a partial-flow branch-off of liquid refrigerant from the refrigerant main flow circuit, wherein the compressor housing is cooled in a controlled manner by means of refrigerant evaporation, with the refrigerant vapor being subsequently fed to the inlet, and that, for power adjustment, there are also post-inlet feeds into the working space in addition to the inlet feed, and also pre-outlet discharges in addition to the outlet discharge from the outlet space, each with their own regulating device.