公开(公告)号：US06672856B1

公开(公告)日：2004-01-06

申请号：US10187165

申请日：2002-06-28

申请人： H. Ezzat Khalifa ,  Michael K. Sahm

发明人： H. Ezzat Khalifa ,  Michael K. Sahm

IPC分类号： F04C1816

CPC分类号： F04C29/12 ,  F04C18/16 ,  F04C2240/10 ,  F04C2250/102

摘要： A screw compressor includes a housing containing at least one rotor for generating a discharge flow in a discharge flow direction; a diffuser communicated with the housing and having a collecting portion for receiving the discharge flow, a diffuser throat and a diffuser portion, said diffuser extending from the housing in a diffuser direction; and at least one turning vane positioned in the collecting portion and adapted to guide flow from the discharge flow direction to the diffuser direction.

摘要翻译： 螺杆式压缩机包括容纳至少一个用于在排出流动方向产生排放流的转子的壳体; 与所述壳体连通并具有用于接收排出流的收集部分的扩散器，扩散器喉部和扩散器部分，所述扩散器从所述壳体沿扩散器方向延伸; 以及至少一个转动叶片，其定位在收集部分中并且适于引导从排出流动方向到扩散器方向的流动。

公开(公告)号：US06497563B1

公开(公告)日：2002-12-24

申请号：US09712435

申请日：2000-11-14

申请人： Ralf Steffens

发明人： Ralf Steffens

IPC分类号： F04C1816

CPC分类号： F04C18/084 ,  F04C18/16 ,  F04C27/009 ,  F04C29/025 ,  F04C29/04

摘要： A dry-compressing screw pump in the form of a two-shaft positive displacement pump. A first and a second rotor spindle are disposed parallel to each other. The rotor spindles are hollow. A cooling medium is fed at a first front face of the rotor spindles and evacuated at a second front face of the rotor spindles. A cooling medium feeding and evacuation means is connected to an external cooling medium circuit. The inner diameter of the rotor spindles monotonously increases from the first front face toward the second front face so that the cooling medium is conveyed from the first front face to the second front face substantially under the influence of centrifugal force acting on the cooling medium due to the rotation of the rotor spindle.

摘要翻译： 一种双轴容积式泵的干式压缩螺杆泵。 第一和第二转子轴彼此平行设置。 转子主轴是中空的。 冷却介质在转子主轴的第一前表面处被供给并且在转子主轴的第二前表面处抽真空。 冷却介质供给和排出装置连接到外部冷却介质回路。 转子主轴的内径从第一前面朝向第二前面单调增加，使得冷却介质基本上受到作用在冷却介质上的离心力的影响而从第一前表面传送到第二前表面由于 转子主轴的旋转。

公开(公告)号：US06409490B1

公开(公告)日：2002-06-25

申请号：US09864234

申请日：2001-05-25

申请人： Paul Nemit, Jr. ,  Charles M. Beall, Jr.

发明人： Paul Nemit, Jr. ,  Charles M. Beall, Jr.

IPC分类号： F04C1816

CPC分类号： F04C28/125 ,  F01C21/02 ,  F04C18/16

摘要： In a screw compressor, guide bushings are mounted within bores for the bearings which support rotor shafts for the compressor. First bushings are provided at an inlet casing of the compressor and provide guidance for a slide stop and second bushings are provided in an outlet casing of the compressor to provide guidance for a slide valve. The bushings are also mounted to the inlet and outlet casings to provide centering for two sections of the compressor rotor housing. In one embodiment the first and second bushings provide guidance for a slide valve.

摘要翻译： 在螺杆式压缩机中，引导衬套安装在用于承载压缩机的转子轴的轴承的孔内。 第一衬套设置在压缩机的入口壳体处，并为滑动止挡提供引导，并且第二衬套设置在压缩机的出口壳体中，以为滑阀提供引导。 衬套也安装在入口和出口壳体上，以为压缩机转子壳体的两个部分提供定心。 在一个实施例中，第一和第二衬套为滑阀提供引导。

公开(公告)号：US06821098B2

公开(公告)日：2004-11-23

申请号：US10364119

申请日：2003-02-11

申请人： Alexander Lifson

发明人： Alexander Lifson

IPC分类号： F04C1816

CPC分类号： F04C29/12

摘要： A compressor has male and female rotors with enmeshed screw-type body portions. A housing cooperates with the rotors to define inlet and outlet chambers for pumping of fluid from/to when the male rotor in a first direction and the female rotor rotates in an opposite direction. The housing cooperates with the rotors to define inlet and outlet ports at the inlet and outlet chambers for each of a male and female compression pocket. The inlet ports and/or outlet ports of the respective male and female compression pockets are positioned to respectively close or open sequentially.

摘要翻译： 压缩机具有带啮合的螺旋型主体部分的阳和阴转子。 壳体与转子配合以限定用于当第一方向上的阳转子和阴转子沿相反方向旋转时从/向泵送流体的入口和出口室。 壳体与转子配合以在入口和出口腔室处限定用于每个雄性和阴性压缩袋的入口和出口。 相应的阳和阴压缩袋的入口端口和/或出口定位成分别关闭或依次打开。

公开(公告)号：US06655938B2

公开(公告)日：2003-12-02

申请号：US09985529

申请日：2001-11-05

申请人： Kiyoshi Yanagisawa ,  Tokio Fukai

发明人： Kiyoshi Yanagisawa ,  Tokio Fukai

IPC分类号： F04C1816

CPC分类号： F04C18/086 ,  F04C18/16 ,  F04C2220/12 ,  F04D19/044

摘要： A screw-type dry vacuum pump comprises a rotor having a screw thread thereon for exhausting a gas through rotation, a casing for housing the rotor therein, a reduced portion provided in the casing, and an enlarged portion provided on a discharge end of the casing. The reduced portion forms a slight gap between the outer circumferential surface of the rotor and the inner surface thereof. The enlarged portion forms a larger gap between the outer circumferential surface of the rotor and the inner surface thereof.

摘要翻译： 螺杆式干式真空泵包括：转子，其上具有用于通过旋转排出气体的螺纹，用于容纳转子的壳体，设置在壳体中的减压部分，以及设置在壳体的排出端上的扩大部分 。 减速部在转子的外周面与其内表面之间形成微小的间隙。 扩大部分在转子的外周面与其内表面之间形成较大的间隙。

公开(公告)号：US06494699B2

公开(公告)日：2002-12-17

申请号：US09930549

申请日：2001-08-15

申请人： Lars Ivan Sjoholm ,  Gregory Gordon Anderson

发明人： Lars Ivan Sjoholm ,  Gregory Gordon Anderson

IPC分类号： F04C1816

CPC分类号： F04C28/26 ,  F04C18/16 ,  F04C28/28 ,  Y10T29/49242

摘要： A screw compressor having an unloader valve with a movable valve member, the unloader valve being capable of indicating when the valve member is installed incorrectly. The valve member is manufactured such that if it is installed incorrectly it provides a leakage path sufficiently large to be detected during full load testing of the compressor. When the screw compressor fails the load test, the compressor is partially disassembled, and the valve is reinstalled in the proper orientation and the compressor is re-tested. The valve member leakage path is provided while maintaining low costs for production and assembly of the compressor.

公开(公告)号：US06375443B1

公开(公告)日：2002-04-23

申请号：US09647254

申请日：2000-09-22

申请人： Masashi Yoshimura

发明人： Masashi Yoshimura

IPC分类号： F04C1816

CPC分类号： F04C29/0007 ,  F04C18/16

摘要： A feed pipe 26 for a sealing water is connected to a housing of the pump to communicate with an enclosed chamber which is defined between a position in which a helical seal line of screw rotors 17 isolates the enclosed chamber from a suction port 15 of the pump and another position in which the enclosed chamber begins to open to a discharge port 24. Alternatively, a feed pipe for the sealing water is connected to the suction port 15 of the vacuum pump, and the feed pipe 26 is provided with a valve V which opens when the suction pressure of the sealing water becomes lower than −380 mmHg.

摘要翻译： 用于密封水的进料管26连接到泵的壳体以与封闭室连通，所述封闭室限定在螺旋转子17的螺旋形密封线将密封室与泵的吸入口15隔离的位置 另一个位置，封闭室开始向排放口24打开。或者，用于密封水的供给管连接到真空泵的吸入口15，并且进料管26设置有阀V， 当密封水的吸入压力低于-380 mmHg时打开。

公开(公告)号：US06315535B1

公开(公告)日：2001-11-13

申请号：US09647251

申请日：2000-09-22

申请人： Toshiyasu Hoshi ,  Masashi Yoshimura

发明人： Toshiyasu Hoshi ,  Masashi Yoshimura

IPC分类号： F04C1816

CPC分类号： F04C28/28 ,  F04C18/16 ,  F04C29/04

摘要： A discharge side housing 3 has a third cooling water chamber 19 communicating with a first cooling water chamber 7 of a main housing 1 through a cooling water passage 26. The third cooling water chamber 19 is connected to a cooling water outlet pipe 27 which is connected to an inlet port 28a of a three-way valve 28. The three-way valve 28 has a switching port 28b which can communicate with a pipe line 29 connected to the first cooling water chamber 7. The three-way valve 28 has an outlet 28c connected to a pipe line 30 which communicates with a second cooling water chamber 22 of a suction side housing 2. The second cooling water chamber 22 is connected to a cooling water discharge line 31 provided with a flow control valve 32 allowing a back pressure for a cooling water flowing thereinto.

摘要翻译： 排出侧壳体3具有通过冷却水通道26与主壳体1的第一冷却水室7连通的第三冷却水室19.第三冷却水室19与连接的冷却水出口管27连接 到三通阀28的入口28a。三通阀28具有可与连接到第一冷却水室7的管路29连通的切换口28b。三通阀28具有出口 28c连接到与吸入侧壳体2的第二冷却水室22连通的管路30.第二冷却水室22连接到设置有流量控制阀32的冷却水排出管线31，流量控制阀32允许背压 流入其中的冷却水。

公开(公告)号：US06287100B1

公开(公告)日：2001-09-11

申请号：US09446367

申请日：2000-07-18

申请人： Carsten Achtelik ,  Karl-Heinz Gilfert ,  Arno Heinz ,  Walter Murmann

发明人： Carsten Achtelik ,  Karl-Heinz Gilfert ,  Arno Heinz ,  Walter Murmann

IPC分类号： F04C1816

CPC分类号： F16J15/004 ,  F04C27/009

摘要： A sealing arrangement on a rotor shaft peg of a dry-running rotation screw compressor for establishing a seal between the rotor (1) and the oil-lubricating bearing (7) of the shaft peg (3) has a labyrinth slit seal (11), located closer to the rotor, and a lip seal ring (13), located closer to the bearing, and in between an annular space (27) with ventilation opening (29) towards the bottom. The shaft peg bears a bearing race (25) made of a hardened material, which acts in cooperation with the lip sealing ring (13), and which can also extend above the area of the labyrinth slit seal (11).

摘要翻译： 用于在转子（1）和轴栓（3）的油润滑轴承（7）之间建立密封的干式旋转螺杆式压缩机的转子轴上的密封装置具有迷宫式狭缝密封件（11） 位于更靠近转子的位置处，以及唇形密封环（13），其位于更接近轴承的位置，并且位于具有朝向底部的通风开口（29）的环形空间（27）之间。 所述轴钉承载由硬化材料制成的轴承座圈（25），其与所述唇缘密封环（13）协作起作用，并且还可以在所述迷宫式狭缝密封件（11）的区域的上方延伸。

公开(公告)号：US06779993B2

公开(公告)日：2004-08-24

申请号：US10348868

申请日：2003-01-22

申请人： Jeong Suk Kim ,  Jae Ho Lee

发明人： Jeong Suk Kim ,  Jae Ho Lee

IPC分类号： F04C1816

CPC分类号： F04C18/084 ,  F04C18/16

摘要： A rotor profile for screw compressors is disclosed. The rotor profile is shown in a latitudinal cross-section taken along a line extending in a direction perpendicular to rotor axes, and is applied to male and female rotors used in a screw compressor having a housing defining an actuating space therein, the male rotor being rotatably set in the actuating space and having spiral teeth and roots defined between the teeth, and the female rotor being set in the actuating space to rotatably engage with the male rotor and having spiral teeth and roots defined between the teeth. The rotor profile comprises a first curve F-G determined as a circular arc and inscribed in an addendum circle of the female rotor at a point “G” around a trailing end of each tooth of the female rotor, and a second curve determined by a hyperbola function r=(&egr;·K)/(1−&egr;·cos &thgr;), wherein 1.1≦&egr;≦1.15, and a derived function of first order of the hyperbola function of the second curve at a point “F” is equal to a derived function of first order of a function of the curve F-G. Due to the curve E-F, the blow-hole size is preferably minimized while the pressure angle of a rotor machining tool is maintained at a level of at least 8°. In addition, due to an appropriately limited wrap angle of the male rotor, the pressure angle of the rotor machining tool is increased and desired tooth strength is maintained.

摘要翻译： 公开了一种用于螺杆式压缩机的转子轮廓。 转子轮廓以沿垂直于转子轴线的方向延伸的线截取的纬向横截面示出，并且被施加到在具有在其中限定致动空间的壳体的螺杆压缩机中使用的阳和阴转子，所述阳转子是 可旋转地设置在致动空间中并且具有限定在齿之间的螺旋齿和根，并且阴转子设置在致动空间中，以与阳转子可旋转地接合并且具有限定在齿之间的螺旋齿和根。 转子轮廓包括被确定为圆弧的第一曲线FG，并且在母转子的每个齿的后端处的点“G”处内接在母转子的齿顶圆中，并且由双曲线函数确定的第二曲线 r =（ε·K）/（1-epsilon.cosθ），其中1.1 <=ε= 1.15，第二曲线在点“F”处的双曲线函数的一阶导数函数等于 曲线FG的函数的一阶导出函数。 由于曲线E-F，所以优选最小化气孔尺寸，同时转子加工工具的压力角保持在至少8°的水平。 此外，由于阳转子的适当受限的包角，转子加工工具的压力角度增加并且期望的齿强度得以保持。