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21. 发明授权

US3286913A Rotary pump 失效
公开(公告)号：US3286913A
公开(公告)日：1966-11-22
申请号：US38230864
申请日：1964-07-13
申请人： RANDOLPH MFG CO
发明人： KAATZ HERBERT W , LEO TOBACMAN
IPC分类号： F01C21/10 , F04C2/344 , F04C15/00
CPC分类号： F04C15/0061 , F01C21/10 , F01C21/106 , F04C2/3446 , F04C2220/12

22. 发明公开

US20230323878A1 DRY VACUUM PUMP AND MANUFACTURING METHOD 审中-公开
公开(公告)号：US20230323878A1
公开(公告)日：2023-10-12
申请号：US17768071
申请日：2020-09-24
申请人： PFEIFFER VACUUM
发明人： Laetitia POPIN , Philippe D'HARBOULLE , Igor FORESTIER , Sebastien BARDEL , Emmanuel BEAUJON
IPC分类号： F04C25/02 , F04C18/12
CPC分类号： F04C25/02 , F04C18/126 , F04C2220/12 , F04C2230/91 , F04C2230/41
摘要： A dry vacuum pump has a stator (2) and two rotors (5) that are accommodated in at least one compression chamber (3) of the stator (2), the rotors (5) being configured to rotate synchronously in opposite directions so as to drive a gas to be pumped between an intake and a delivery of the vacuum pump. The rotors (5) and the compression chamber (3) of the stator (2) are coated with a nickel-phosphorus coating (11) comprising between 9% and 14% phosphorus and having a thickness greater than 20 μm, the nickel-phosphorus coating (11) having undergone a hardening heat treatment comprising a step of heating to a treatment temperature greater than 250° C. for a treatment duration greater than one hour, so as to have a hardness greater than 700 HV.

23. 发明申请

US20180355866A1 DRY VACUUM SCROLL PUMP 审中-公开
公开(公告)号：US20180355866A1
公开(公告)日：2018-12-13
申请号：US15778151
申请日：2016-11-10
申请人： Edwards Limited
发明人： Mo Bahrami , Andries Desiron
IPC分类号： F04C27/00 , F04C18/02 , F04C29/04
CPC分类号： F04C27/008 , F04C18/0215 , F04C18/0253 , F04C25/02 , F04C29/04 , F04C2220/12
摘要： A dry scroll vacuum pump includes a fixed scroll, a drive shaft having an axis and an eccentric shaft portion, an orbiting scroll connected to the eccentric shaft portion so that during use rotation of the shaft imparts an orbiting motion to the orbiting scroll relative to the fixed scroll for pumping gas between a mechanism inlet and a mechanism outlet of a scroll mechanism comprising the scrolls; an inlet vacuum region for conveying gas from the pump inlet to the mechanism inlet; a cooling flow path formed inside the orbiting scroll for guiding a cooling fluid for cooling the orbiting scroll, the cooling flow path having a fluid inlet; and a sealing arrangement for sealing the fluid inlet from the inlet vacuum region so a cooling fluid can be conveyed across the inlet vacuum region through the sealing arrangement to the fluid inlet.

24. 发明授权

US09297382B2 Scroll compressor 有权
标题翻译：涡旋压缩机
公开(公告)号：US09297382B2
公开(公告)日：2016-03-29
申请号：US13583449
申请日：2011-02-17
申请人： Ian David Stones
发明人： Ian David Stones
IPC分类号： F01C1/02 , F01C1/063 , F04C2/00 , F04C18/00 , F04C18/02 , F04C29/00 , F04C23/00
CPC分类号： F04C18/0207 , F04C23/008 , F04C29/0092 , F04C2220/12 , F04C2220/30
摘要： A scroll compressor (10) comprising a scroll pumping mechanism having two co-operating scrolls (14,16) mounted within a pump housing (18) so that on relative orbital movement of the scrolls fluid is pumped from a pump inlet (20) in the pump housing to a pump outlet (22) in the pump housing. The scroll compressor (10) further comprises a filter (24) located within the pump housing (18) along a fluid flow path (26) between the pump inlet (20) and the scroll pumping mechanism (12) for resisting the passage of particulates (28) upstream of the compressor.
摘要翻译：一种涡旋压缩机（10），其包括具有安装在泵壳体（18）内的两个配合涡旋件（14,16）的涡旋泵送机构，使得在涡旋流体的相对轨道运动被泵送到泵入口（20）泵壳体到泵壳体中的泵出口（22）。涡旋式压缩机（10）还包括沿着泵入口（20）和涡旋泵机构（12）之间的流体流动路径（26）位于泵壳体（18）内的过滤器（24），用于抵抗颗粒物的通过（28）压缩机的上游。

25. 发明授权

US09057374B2 Oilless screw compressor and compressed air cooling unit 有权
标题翻译：无油螺杆压缩机和压缩空气冷却装置
公开(公告)号：US09057374B2
公开(公告)日：2015-06-16
申请号：US13164320
申请日：2011-06-20
申请人： Hideki Fujimoto , Hitoshi Nishimura , Natsuki Kawabata
发明人： Hideki Fujimoto , Hitoshi Nishimura , Natsuki Kawabata
IPC分类号： F01C21/04 , F03C2/00 , F04C18/16 , F04C23/00 , F04C28/06 , F04C29/04 , F04C29/06
CPC分类号： F04C18/16 , F04C23/001 , F04C28/06 , F04C29/04 , F04C29/06 , F04C2220/12 , F04C2240/30 , F04C2270/19 , F04C2270/80
摘要： An oilless screw compressor incorporating water-cooled cooling units for cooling compressed air discharged from compressor bodies having a pair of male and female screw rotors which can be rotated in a contactless and oilless manner, the cooling units comprising a plate type heat-exchanger, and the amount of cooling water for the plate type heat-exchanger being adjustable. With this configuration, a difference between a temperature during load operation and a temperature upon automatic stopping and during unload operation of the compressor can be reduced, so that the cooling unit can be restrained from being damaged or broken within a short period, thereby it is possible to provide a highly reliable oilless screw compressor.
摘要翻译：一种无油螺旋压缩机，其包括用于冷却从压缩机主体排出的压缩空气的水冷式冷却单元，所述压缩机具有可以非接触和无油的方式旋转的一对公螺纹转子和内螺纹转子，所述冷却单元包括板式热交换器，以及板式热交换器的冷却水量可调。通过这样的结构，能够减少负荷运转时的温度与自动停止时的温度，压缩机的卸载运转时的温度的差异，能够在短时间内抑制冷却装置的损坏或破损，可能提供高可靠性的无油螺杆压缩机。

26. 发明申请

US20120251368A1 PUMP 有权
公开(公告)号：US20120251368A1
公开(公告)日：2012-10-04
申请号：US13514203
申请日：2010-11-23
申请人： Philip John Stephens , Ian David Stones , Malcolm William Gray , Paul David Neller
发明人： Philip John Stephens , Ian David Stones , Malcolm William Gray , Paul David Neller
IPC分类号： F04C29/02 , F04C2/00 , F04C29/00
CPC分类号： F04C25/02 , F04C23/001 , F04C27/009 , F04C27/02 , F04C28/02 , F04C29/0092 , F04C2220/12
摘要： The present invention provides a positive displacement dry pump comprising: a plurality of vacuum pumping stages comprising a respective plurality of pumping mechanisms driven by one or more drive shafts for pumping fluid in series through the pumping stages from a pump inlet at the high vacuum stage to a pump outlet at the low vacuum stage; a lubrication chamber housing a bearing assembly for supporting the drive shaft for rotational movement, the drive shaft extending from the high vacuum stage to the lubrication chamber through an opening of a head plate of the lubrication chamber; an inter-stage purge port through which gas can enter the pump at an inter-stage location downstream of the high vacuum stage and pass only through the or each vacuum pumping stage downstream of the inter-stage port; a lubrication chamber purge port located in the lubrication chamber through which purge gas can flow from a source of purge gas; wherein the inter-stage port is connected to the lubrication chamber for controlling the pressure of purge gas in the lubrication chamber thereby resisting the passage of pumped gases from the high vacuum chamber to the lubrication chamber through the opening of the head plate during use.
摘要翻译：本发明提供一种容积式干式泵，其包括：多个真空泵送级，其包括由一个或多个驱动轴驱动的相应的多个泵送机构，用于将高压真空级的泵入口串联泵送流体，在低真空级的泵出口; 润滑室，其容纳用于支撑用于旋转运动的驱动轴的轴承组件，所述驱动轴通过所述润滑室的头板的开口从所述高真空级延伸到所述润滑室; 一个级间清洗口，气体可以在高真空级下游的一个级间位置进入泵，并仅通过该级间端口下游的每个真空泵送级; 位于所述润滑室中的润滑室吹扫口，吹扫气体可以通过所述润滑室从所述吹扫气体源流出; 其中所述级间端口连接到所述润滑室，用于控制所述润滑室中的吹扫气体的压力，由此抵抗在使用期间通过所述头板的打开从所述高真空室到所述润滑室的泵送气体的通过。

27. 发明授权

US07988435B2 Oilless screw compressor and compressed air cooling unit 有权
标题翻译：无油螺杆压缩机和压缩空气冷却装置
公开(公告)号：US07988435B2
公开(公告)日：2011-08-02
申请号：US11752319
申请日：2007-05-23
申请人： Hideki Fujimoto , Hitoshi Nishimura , Natsuki Kawabata
发明人： Hideki Fujimoto , Hitoshi Nishimura , Natsuki Kawabata
IPC分类号： F01C21/04 , F03C2/00
CPC分类号： F04C18/16 , F04C23/001 , F04C28/06 , F04C29/04 , F04C29/06 , F04C2220/12 , F04C2240/30 , F04C2270/19 , F04C2270/80
摘要： An oilless screw compressor incorporating water-cooled cooling units for cooling compressed air discharged from compressor bodies having a pair of male and female screw rotors which can be rotated in a contactless and oilless manner, the cooling units comprising a plate type heat-exchanger, and the amount of cooling water for the plate type heat-exchanger being adjustable. With this configuration, a difference between a temperature during load operation and a temperature upon automatic stopping and during unload operation of the compressor can be reduced, so that the cooling unit can be restrained from being damaged or broken within a short period, thereby it is possible to provide a highly reliable oilless screw compressor.
摘要翻译：一种无油螺旋压缩机，其包括用于冷却从压缩机主体排出的压缩空气的水冷式冷却单元，所述压缩机具有可以非接触和无油的方式旋转的一对公螺纹转子和内螺纹转子，所述冷却单元包括板式热交换器，以及板式热交换器的冷却水量可调。通过这样的结构，能够减少负荷运转时的温度与自动停止时的温度，压缩机的卸载运转时的温度的差异，能够在短时间内抑制冷却装置的损坏或破损，可能提供高可靠性的无油螺杆压缩机。

28. 发明申请

US20100047080A1 METHOD OF OPERATING A PUMPING SYSTEM 有权
标题翻译：操作泵送系统的方法
公开(公告)号：US20100047080A1
公开(公告)日：2010-02-25
申请号：US11883616
申请日：2006-01-23
申请人： Simon Harold Bruce
发明人： Simon Harold Bruce
IPC分类号： F04B49/06
CPC分类号： F04D27/00 , F04B49/06 , F04B49/20 , F04B2203/0201 , F04B2203/0204 , F04C18/12 , F04C18/16 , F04C23/02 , F04C25/02 , F04C28/06 , F04C2220/10 , F04C2220/12 , F04C2240/403 , F04C2270/08 , F04C2270/09 , F04C2270/18 , F04C2270/19 , F04D27/004
摘要： A pumping system for evacuating an enclosure comprises a pumping mechanism (30), a motor (32) for driving the pumping mechanism, and a controller (36) for controlling the motor. The controller sets a maximum value for a rotational frequency of the motor and a maximum value for a current in the motor, and, to optimise the performance of the pumping system, independently adjusts the maximum values during evacuation of the enclosure.
摘要翻译：用于排空外壳的泵送系统包括泵送机构（30），用于驱动泵送机构的马达（32）和用于控制马达的控制器（36）。控制器设置电动机转速的最大值和电动机中电流的最大值，并优化泵送系统的性能，独立调整外壳抽真空时的最大值。

29. 发明授权

US07417398B2 Vacuum pump 有权
标题翻译：真空泵
公开(公告)号：US07417398B2
公开(公告)日：2008-08-26
申请号：US11606014
申请日：2006-11-30
申请人： Junichiro Kozaki , Yoshio Tsunazawa , Akira Arakawa , Masaki Ohfuji
发明人： Junichiro Kozaki , Yoshio Tsunazawa , Akira Arakawa , Masaki Ohfuji
IPC分类号： F04D19/04 , F04B49/10
CPC分类号： F04D19/042 , F04C2220/12 , F04C2270/11 , F04C2270/19 , F04D29/058
摘要： A vacuum pump includes at least one magnetic body located on a circle about a rotor rotational axis and having a Curie temperature within a rotor temperature monitoring range; an inductance detecting portion facing the circle so as to establish a gap between the circle and the inductance detecting portion, for detecting a change of magnetic permeability of the magnetic body as an inductance change when the magnetic body rotates; and a carrier generation device generating a carrier signal for providing in the inductance detecting portion. An A/D conversion device samples a detection signal of the inductance detecting portion synchronously with a carrier generation by the carrier generation device, and converts the detection signal to a digital signal. A determination device determines whether or not a temperature of the rotor exceeds a predetermined temperature, based on the change of the magnetic permeability of the magnetic body.
摘要翻译：真空泵包括至少一个磁体，其位于围绕转子旋转轴线的圆周上，并具有转子温度监控范围内的居里温度; 电感检测部分，面对所述圆形，以便在所述圆和所述电感检测部分之间建立间隙，用于当所述磁体旋转时检测作为电感变化的所述磁体的磁导率的变化; 以及载波生成装置，其生成用于在电感检测部中提供的载波信号。 A / D转换装置与载波生成装置的载波生成同步地对电感检测部的检测信号进行采样，并将检测信号转换为数字信号。判定装置基于磁体的导磁率的变化来判定转子的温度是否超过规定的温度。

30. 发明申请

US20080038132A1 Rotary Dry Vacuum Pump 审中-公开
标题翻译：旋转干式真空泵
公开(公告)号：US20080038132A1
公开(公告)日：2008-02-14
申请号：US10595482
申请日：2004-10-21
申请人： Daisuke Ihara , Satoshi Fujii
发明人： Daisuke Ihara , Satoshi Fujii
IPC分类号： F04C25/02 , F01C11/00 , F01C1/16
CPC分类号： F04C18/16 , F04C23/008 , F04C29/0085 , F04C29/0092 , F04C29/045 , F04C2220/12 , F04C2280/02
摘要： Conventionally, when a canned motor is used in the drive part of a rotary dry vacuum pump, there is found a problem that reaction produced gas flows into the interior of the canned motor to thereby break down the canned motor and thus the rotary dry vacuum pump. To solve this problem, according to the invention, there is provided a rotary dry vacuum pump comprising a rotary rotor composed of one or plural rotors housed within a housing, bearings for supporting respectively the rotary shafts of these rotors, a suction port and an exhaust port formed in the housing respectively for sucking and exhausting fluid, and a rotary rotor composed of a motor for driving and rotating at least one of the rotors, wherein the motor includes a stator core fixed to the inside of the housing of the motor, a partition wall mounted on the rotor inner peripheral side is fixedly secured to the housing to thereby hermetically seal the interior of the partition wall, a rotary element is rotatably disposed on the shaft within the partition wall to thereby provide a rotatable structure, and there is opened up in the motor a gas charge hole for charging purge gas into the partition wall.
摘要翻译：通常，当在旋转干式真空泵的驱动部中使用固定电动机时，发现产生反应的气体流入密封电动机的内部，从而分解罐头电动机并因此旋转式干式真空泵。为了解决这个问题，根据本发明，提供一种旋转式干式真空泵，其包括由容纳在壳体内的一个或多个转子构成的旋转转子，分别用于支撑这些转子的旋转轴的轴承，吸入口和排气形成在所述壳体中的用于吸入和排出流体的端口，以及由用于驱动和旋转至少一个所述转子的电动机组成的旋转转子，其中所述电动机包括固定到所述电动机的壳体内部的定子芯，安装在转子内周侧的分隔壁固定地固定到壳体上，从而密封隔壁的内部，旋转元件可旋转地设置在分隔壁内的轴上，从而提供可旋转的结构，并且打开在电动机中放置用于将吹扫气体充入分隔壁的气体充气孔。

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