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1.发明授权Rotary screw machine with multiple chambers in casing for lubrication-coding fluid 失效旋转螺杆机具有多个腔室，用于润滑编码液体
公开(公告)号：US4983106A
公开(公告)日：1991-01-08
申请号：US417115
申请日：1989-10-04
申请人： Dan Wright , Allan Riach , Jean-Marie Crinquette , Rene Sibuet , Jacques Long
发明人： Dan Wright , Allan Riach , Jean-Marie Crinquette , Rene Sibuet , Jacques Long
CPC分类号： F16H57/0415 , F04C29/04 , F16H57/0421 , F16H57/0469
摘要： The machine comprises first and second screw rotors (1, 2) supported by bearings (47) in a stator casing (3) which is provided with a suction inlet and a delivery outlet, the first rotor is driven by a motor (10) and the second rotor is driven by means of synchronizing gearing (11-12) situated in a first chamber (14) of the casing and located between the motor (10) and one of the ends of the rotors, the gearing (11-12) running in a lubricating fluid (15), the machine is characterized in that the cavity (30) of the casing containing the rotors (1-2) is separated from the first chamber (14) by a first wall (16) having the shafts (8, 13) of the rotors passing therethrough via seals (17-18), in that the shafts of the rotors at the opposite ends of the rotors to the ends having the gearing pass through a second wall (20) via seals (24-25), and in that the casing (3 ) includes, beyond the second wall (20), a second chamber (31) connected to the first chamber (14) by a main pipe (29) provided with pumping means (49), the rotors and the stator-casing including fluid circulation channels (32 to 34) terminating firstly in the second chamber (31) and secondly in the first chamber (14) and/or in that portion of the pipe (29) lying between the first chamber (14) and the pumping means, with a heat exchanger (41) being disposed on the path of the pipe (29).
摘要翻译： 该机器包括由定子壳体（3）中的轴承（47）支撑的第一和第二螺杆转子（1,2），该定子壳体（3）设有吸入口和出口，第一转子由马达（10）和 所述第二转子通过使位于所述壳体的第一室（14）中的位于所述马达（10）和所述转子的一端之间的传动装置（11-12）驱动，所述传动装置（11-12） 运行在润滑流体（15）中，该机器的特征在于，包含转子（1-2）的壳体的空腔（30）通过具有轴的第一壁（16）与第一室（14）分离， （17-18）转过的转子的转子（8,13），因为在转子的相对两端的转子的轴与具有齿轮的端部之间的转轴通过密封件（24）穿过第二壁（20） -25），并且壳体（3）包括在第二壁（20）之外的通过主管（29）连接到第一室（14）的第二室（31），所述主管 通过泵送装置（49），转子和定子壳体包括首先在第二腔室（31）中终止的流体循环通道（32至34），其次在第一腔室（14）和/或管道的该部分中 （29）位于第一室（14）和泵送装置之间，热交换器（41）设置在管道（29）的路径上。
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2.发明授权
公开(公告)号：US5234323A
公开(公告)日：1993-08-10
申请号：US811662
申请日：1991-12-23
CPC分类号： F04C25/02 , F04C29/0092
摘要： A machine of the fluid entrainment or the positive displacement type, such as a compressor or a vacuum pump, in which injection of dry gas is effected in the discharge region of said machine or of one of its stages, wherein said injection is effected in a distributed manner over a surface.
摘要翻译： 一种液体夹带机器或正位移型机器，例如压缩机或真空泵，其中在所述机器或其一个级的排放区域中进行干燥气体的注入，其中所述注射在 分布在一个表面上。
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公开(公告)号：US5040949A
公开(公告)日：1991-08-20
申请号：US531726
申请日：1990-06-01
IPC分类号： F04C18/16 , F01C1/16 , F04B23/14 , F04C23/00 , F04C25/02 , F04C28/02 , F04D17/00 , F04D17/16 , F04D19/04
CPC分类号： F04C28/02 , F04C23/005 , F04D17/168 , F04C2220/12
摘要： A two stage dry primary pump comprises, in a single common stator: a screw pump at its low pressure end; and a fluid viscous effect, single rotary screw gas exhaust pump at its high pressure end; with a link duct providing communication between the screw pump and the viscous effect, single rotary screw gas exhaust pump. The invention is applicable to vacuum pumps.
摘要翻译： 两级干式主泵包括在单个公共定子中：在其低压端处的螺杆泵; 并具有流体粘性效应，单螺杆排气泵在其高压端; 具有提供螺杆泵和粘性效应之间的连通的连杆导管，单旋转螺杆式排气泵。 本发明适用于真空泵。
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公开(公告)号：US4887941A
公开(公告)日：1989-12-19
申请号：US249154
申请日：1988-09-26
摘要： A method of starting series-coupled vacuum pumps comprising a primary pump (A) and at least one secondary pump (B) connected between the primary pump and an enclosure (E) in which a vacuum is to be established, the method consisting in starting the primary pump initially and subsequently starting the secondary pump when the suction pressure of the primary pump as reduced by rotation of the primary pump reaches an acceptable value, the method being characterized in that the pressure existing in the secondary pump is determined by using a physical magnitude related to the primary pump and following a law similar to the pressure law.
摘要翻译： 一种启动串联耦合真空泵的方法，包括初级泵（A）和连接在初级泵和其中要建立真空的外壳（E）之间的至少一个次级泵（B），该方法包括起动 初级泵，随后当主泵的吸入压力通过主泵的旋转减小达到可接受的值时，起动二次泵，该方法的特征在于，存在于二次泵中的压力通过使用物理 与初级泵相关，并遵循类似于压力定律的法律。
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