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1. 发明授权

US06776588B1 Dry compressing vacuum pump having a gas ballast device 失效
标题翻译：具有气镇装置的干压真空泵
公开(公告)号：US06776588B1
公开(公告)日：2004-08-17
申请号：US10168289
申请日：2002-06-17
申请人： Lutz Arndt , Thomas Dreifert , Michael Hölzemer , Jürgen Meyer , Frank Schönborn
发明人： Lutz Arndt , Thomas Dreifert , Michael Hölzemer , Jürgen Meyer , Frank Schönborn
IPC分类号： F04B2500
CPC分类号： F04C28/28 , F04B25/005 , F04B37/14 , F04B37/20 , F04C18/16 , F04C2220/12 , F04C2220/50
摘要： A dry compressing vacuum pump (1) has a continuous or graduated inner compression. A gas ballast device (8) selectively adds a ballast gas to a pumped gas. The gas ballast device has an isolating valve (11), a non-return valve (12) which prevents the escape of gases from the pump through the gas ballast device to the outside, and a pressure differential valve (13).
摘要翻译：干式压缩真空泵（1）具有连续或刻度的内部压缩。气体镇流器装置（8）选择性地将压载气体添加到泵送气体中。气体镇流装置具有隔离阀（11），防止气体从泵通过气镇压装置溢出到外部的止回阀（12）和压差阀（13）。

2. 发明授权

US09476423B2 Roots pump connection channels separating adjacent pump stages 有权
标题翻译：罗茨泵连接通道分离相邻的泵级
公开(公告)号：US09476423B2
公开(公告)日：2016-10-25
申请号：US14238611
申请日：2012-08-07
申请人： Peter Birch , Thomas Dreifert , Robert Jenkins , Clive Tunna
发明人： Peter Birch , Thomas Dreifert , Robert Jenkins , Clive Tunna
IPC分类号： F03C2/00 , F03C4/00 , F04C2/00 , F04C18/12 , F04C23/00 , F04C25/02 , F04C18/08
CPC分类号： F04C18/126 , F04C18/086 , F04C23/001 , F04C23/003 , F04C25/02
摘要： A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages.
摘要翻译：罗茨泵包括多个多齿旋转泵，每个多齿旋转泵各形成泵台，连接通道连接各相邻的泵级。本发明提供了连接通道布置在分隔相邻泵级的分隔壁中。

3. 发明授权

US09234519B2 Vacuum pump 有权
标题翻译：真空泵
公开(公告)号：US09234519B2
公开(公告)日：2016-01-12
申请号：US13376691
申请日：2010-06-07
申请人： Thomas Dreifert , Wolfgang Giebmanns , Robert Jenkins , Roland Müller
发明人： Thomas Dreifert , Wolfgang Giebmanns , Robert Jenkins , Roland Müller
IPC分类号： F04C29/00 , F04C29/04 , F04C18/16
CPC分类号： F04C29/047 , F04C18/16 , F04C2220/10 , F04C2240/30 , F04C2240/808
摘要： A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.
摘要翻译：真空泵包括设置在泵送室中的泵送元件。电动机驱动泵送元件。提供变频器来改变电动机的转速。变频器布置在立即连接到泵壳体的变频器壳体中。变频器壳体内设有空气冷却器和液体冷却器，以对变频器进行冷却。

4. 发明申请

US20090140495A1 Shaft Seal 审中-公开
标题翻译：轴封
公开(公告)号：US20090140495A1
公开(公告)日：2009-06-04
申请号：US11887601
申请日：2006-03-30
申请人： Thomas Dreifert , Wolfgang Giebmanns , Bernhard Kliem , Heinz Thoren
发明人： Thomas Dreifert , Wolfgang Giebmanns , Bernhard Kliem , Heinz Thoren
IPC分类号： F16J15/447
CPC分类号： F16J15/406 , F04C18/16 , F04C27/009 , F04D29/104
摘要： A shaft seal which is in particular suitable for vacuum pumps, such as screw pumps, comprises an inner sealing ring (18) connectable with the shaft, and an outer sealing ring (20) surrounding said inner sealing ring (18). In the outer sealing ring (20) a circumferential groove (30) is provided into which seal gas is adapted to be fed via a feed channel (22). Further, a seal gas disk (34) is connectable with the shaft (10), the seal gas disk (34) comprising a projection (32) extending towards said groove (30). Thereby a seal gas chamber (28) is defined in the groove (30). The seal gas chamber (28) is connected with a sealing gap (40) provided between the inner and the outer sealing ring (18,20) via a chamber gap (36), through which the seal gas is adapted to flow. Adjacent to the sealing gap (40) a separating chamber (42) defined by the inner and the outer sealing ring (18,20) is arranged, the separating chamber (42) being connected with a discharge channel (44) for the purpose of discharging the seal gas.
摘要翻译：特别适用于诸如螺杆泵的真空泵的轴密封件包括可与轴连接的内密封环（18）和围绕所述内密封环（18）的外密封环（20）。在外密封环（20）中，设置有周向槽（30），密封气体适于经由供给通道（22）进给。此外，密封气盘（34）可与轴（10）连接，密封气盘（34）包括朝向所述槽（30）延伸的突起（32）。因此，在槽（30）中限定密封气室（28）。密封气室（28）通过室间隙（36）与设置在内密封环（18,20）和外密封环（18,20）之间的密封间隙（40）连接，密封气体可以通过该间隙流动。在密封间隙（40）的邻近处设置有由内密封环（18,20）和外密封环（18,20）限定的分离室（42），分离室（42）与排出通道（44）连接，排出密封气体。

5. 发明授权

US06382930B1 Screw vacuum pump provided with rotors 失效
标题翻译：螺杆真空泵配有转子
公开(公告)号：US06382930B1
公开(公告)日：2002-05-07
申请号：US09529433
申请日：2000-04-10
申请人： Rudolf Bahnen , Thomas Dreifert
发明人： Rudolf Bahnen , Thomas Dreifert
IPC分类号： F04B4900
CPC分类号： F04C28/26 , F04C18/084 , F04C18/16 , F04C23/001 , F04C23/008 , F04C29/04 , F04C2220/10
摘要： A screw vacuum pump (1) has rotors (5), bearings (7, 8), a casing (4), a suction side (15), and a delivery side (24). Each of the rotors includes at least two rotor sections, a suction side rotor section (17) and a delivery side rotor section (18). The two rotor sections are separately constructed and joined together in a positive, form-fitting or friction locking manner. The suction side rotor section is preferably larger in diameter and constructed with looser tolerances as compared to the delivery side rotor section. The suction side rotor is preferably of an inexpensive material such as aluminum while the discharge side rotor is preferably constructed of a higher performance material such as stainless steel. The rotor sections are supported on a rotor shaft (6) into which cooling fluid is injected through a cooling pipe (33). Cooling fluid from the shaft is also circulated through the bearings and passages in the casing eventually reaching a sump (37) in preparation for recirculation.
摘要翻译：螺杆真空泵（1）具有转子（5），轴承（7,8），壳体（4），吸力侧（15）和输送侧（24）。每个转子包括至少两个转子部分，吸力侧转子部分（17）和输送侧转子部分（18）。两个转子部分分开构造并以正的，形状配合或摩擦锁定的方式连接在一起。抽吸侧转子部分的直径优选比输出侧转子部分更大，并且以较宽的公差构成。吸入侧转子优选为廉价的材料，例如铝，而排出侧转子优选由较高性能的材料（例如不锈钢）构成。转子部分支撑在转子轴（6）上，冷却流体通过冷却管（33）注入冷却流体。来自轴的冷却流体也循环通过壳体中的轴承和通道，最终到达贮槽（37）以准备再循环。

6. 发明申请

US20140205483A1 ROOTS PUMP 有权
标题翻译：鞋套
公开(公告)号：US20140205483A1
公开(公告)日：2014-07-24
申请号：US14238611
申请日：2012-08-07
申请人： Peter Birch , Thomas Dreifert , Robert Jenkins , Clive Tunna
发明人： Peter Birch , Thomas Dreifert , Robert Jenkins , Clive Tunna
IPC分类号： F04C18/12 , F04C23/00
CPC分类号： F04C18/126 , F04C18/086 , F04C23/001 , F04C23/003 , F04C25/02
摘要： A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages.
摘要翻译：罗茨泵包括多个多齿旋转泵，每个多齿旋转泵各形成泵台，连接通道连接各相邻的泵级。本发明提供了连接通道布置在分隔相邻泵级的分隔壁中。

7. 发明申请

US20090148284A1 Vacuum Pump 审中-公开
标题翻译：真空泵
公开(公告)号：US20090148284A1
公开(公告)日：2009-06-11
申请号：US12087701
申请日：2007-01-11
申请人： Thomas Dreifert , Hans-Rochus Gross
发明人： Thomas Dreifert , Hans-Rochus Gross
IPC分类号： F04D29/10
CPC分类号： F04C18/107 , F05C2201/0442
摘要： A vacuum pump for producing a vacuum in a space which is to be evacuated comprises a housing (10) having a cylindrical inner space (22). An expeller (26) is arranged eccentrically in the inner space (22). A helical sealing element (34) is provided between the expeller (26) and an inner wall (38) of the housing (10) for forming at least one crescent-shaped conveying space. The housing (10) or the expeller (26) are connected to a drive device (44) for producing a relative rotary movement between the housing (10) and the expeller (26). The vacuum pump is configured as a dry-running vacuum pump.
摘要翻译：用于在要抽真空的空间中产生真空的真空泵包括具有圆柱形内部空间（22）的壳体（10）。推进器（26）偏心地布置在内部空间（22）中。螺旋形密封元件（34）设置在排出器（26）和壳体（10）的内壁（38）之间，用于形成至少一个月牙形输送空间。壳体（10）或排出器（26）连接到驱动装置（44），用于在壳体（10）和推出器（26）之间产生相对旋转运动。真空泵配置为干式真空泵。

8. 发明授权

US07153093B2 Vacuum pump 有权
标题翻译：真空泵
公开(公告)号：US07153093B2
公开(公告)日：2006-12-26
申请号：US10505608
申请日：2003-02-18
申请人： Thomas Dreifert , Wolfgang Giebmanns , Hans-Rochus Gross , Hartmut Kriehn
发明人： Thomas Dreifert , Wolfgang Giebmanns , Hans-Rochus Gross , Hartmut Kriehn
IPC分类号： F04C27/00
CPC分类号： F04C27/009 , F04C2220/40
摘要： A vacuum pump (10) comprises at least one rotor shaft (12) having a rotor section (14) with a rotor (16), a bearing section (18) with a bearing (20), and a shaft sealing system (22) that is axially situated between the rotor section (14) and the bearing section (18). The shaft sealing system (22) axially comprises, on the side of the rotor, a gas seal (32) and, on the side of the bearing, an oil seal (34). The shaft sealing system (22) additionally comprises, between the gas seal (32) and the oil seal (34), a separating chamber, which surrounds the rotor shaft (12) and is ventilated by at least one separating chamber ventilation duct (60, 62). This enables the pressure difference that decreases via the gas seal and the pressure difference that decreases via the oil seal to be adjusted. An appropriate adjustment can prevent oil on the bearing side from passing through the oil seal toward the separating chamber.
摘要翻译：真空泵（10）包括至少一个转子轴（12），转子轴（12）具有带有转子（16）的转子部分（14），具有轴承（20）的轴承部分（18）和轴密封系统（22）轴向位于转子部分（14）和轴承部分（18）之间。轴封系统（22）在转子侧轴向地包括气密封（32），并且在轴承侧具有油封（34）。轴密封系统（22）还包括在气体密封件（32）和油封（34）之间的分隔室，其围绕转子轴（12）并且由至少一个分离室通风导管（60）通风，62）。这使得能够经由气体密封件减小的压力差和通过油封被减小的压力差被调节。适当的调节可以防止轴承侧的油通过油封朝向分离室。

9. 发明申请

US20120315165A1 VACUUM PUMP 有权
标题翻译：真空泵
公开(公告)号：US20120315165A1
公开(公告)日：2012-12-13
申请号：US13376691
申请日：2010-06-07
申请人： Thomas Dreifert , Wolfgang Giebmanns , Robert Jenkins , Roland Müller
发明人： Thomas Dreifert , Wolfgang Giebmanns , Robert Jenkins , Roland Müller
IPC分类号： F04B17/03
CPC分类号： F04C29/047 , F04C18/16 , F04C2220/10 , F04C2240/30 , F04C2240/808
摘要： A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.
摘要翻译：真空泵包括设置在泵送室中的泵送元件。电动机驱动泵送元件。提供变频器来改变电动机的转速。变频器布置在立即连接到泵壳体的变频器壳体中。变频器壳体内设有空气冷却器和液体冷却器，以对变频器进行冷却。

10. 外观设计

USD630229S1 Vacuum pump 有权
标题翻译：真空泵
公开(公告)号：USD630229S1
公开(公告)日：2011-01-04
申请号：US29337781
申请日：2009-05-29
申请人： Thomas Dreifert
设计人： Thomas Dreifert

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