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1. 发明授权

EP1723310B1 METHOD AND MEANS FOR CONTROLLING A FLOW THROUGH AN EXPANDER 有权
标题翻译：的方法和手段，用于控制通过扩展设备的流量
公开(公告)号：EP1723310B1
公开(公告)日：2009-04-29
申请号：EP05704792.0
申请日：2005-02-03
申请人： SVENSKA ROTOR MASKINER AB
发明人： ÖHMAN, Henrik
IPC分类号： F01C1/16 , F01C20/00 , F01K25/10 , F04C28/00 , F25B1/047 , F25B11/02
CPC分类号： F01C1/16 , F01C20/10 , F01K7/00 , F01K7/06
摘要： The present invention relates to method of controlling the flow of working medium through an expansion device (1) for use in a closed heating system. In addition to the expansion device (1), the system also includes a condenser (13), a pump (16) and a boiler (10), wherein the expansion device consists in a helical screw rotor expander (1) that has an inlet port (2) an inlet line (11) connected thereto, and an outlet port (3). The expansion device drives an energy producing device (G), for instance a generator. The method is characterized by providing the helical screw rotor expander (1) with an intermediate pressure port (4) between the inlet port (2) ad the outlet port (3), by connecting the intermediate pressure port (4) with the inlet line (11) via a branch line (18) between the intermediate pressure port (4)and a branching point (21) in the inlet line, by including a valve (19) in the branch line (18), and by controlling the flow of working medium through the valve (19) to the intermediate pressure port (4) as a function of a state parameter. The invention also relates to an arrangement which is characterized in that includes an intermediate pressure port (4) in the expander (1) between the inlet port (2) and the outlet port (3), in that it further includes a branch line (18) which connects the intermediate pressure port (4) with the inlet line (11) at a branching point (21) and includes a valve (19) in the branch line (18).

2. 发明公开

EP1228292A1 SCREW ROTOR MACHINE HAVING MEANS FOR AXIALLY BIASING AT LEAST ONE OF THE ROTORS 有权
标题翻译：与设备螺杆转子机器至少在转子上的轴向推力EXERCISE
公开(公告)号：EP1228292A1
公开(公告)日：2002-08-07
申请号：EP00975075.3
申请日：2000-10-20
申请人： SVENSKA ROTOR MASKINER AB
发明人： SUNDSTRÖM, Mats
IPC分类号： F01C1/16 , F01C21/00 , F04C15/00 , F04C18/16
CPC分类号： F01C21/003
摘要： The invention relates to a rotor machine, and then particularly to a helical screw rotor machine which has at least one rotor that is provided with trunnions, of which at least one (7) has an axial thrust surface (29) located in a chamber (17) filled with pressure medium and actuated axially by said pressure medium. It is necessary that the pressure medium chamber connects sealingly with the trunnion (7). This is achieved in accordance with the invention by placing around the trunnion, with a close fit, a casing (20, 21) that has an outer end which is connected to a bottom wall (21) that includes a hole (22) in its centre. The casing is rotatably and slidably mounted on the trunnion and is movable axially between a first axial position in which the bottom wall (21) is in abutment with an end wall (23) of said chamber (17), said end wall having an opening (24) disposed opposite the centre hole (22) in said bottom wall, and a second axial position with an interspace to said end wall (23), wherein a supply channel (26) provided with a valve (27) and extending from a pressure medium source (28) is connected to said opening (24) in the end wall (23) for controlled delivery of pressure medium to the interior of the casing (20, 21) via the hole (22) in the bottom wall (21) of said casing.

3. 发明授权

EP0766790B1 ROTARY DISPLACEMENT COMPRESSOR WITH LIQUID CIRCULATION SYSTEM 失效
标题翻译：与液体循环系统旋转压缩机
公开(公告)号：EP0766790B1
公开(公告)日：2000-07-05
申请号：EP95919702.1
申请日：1995-04-07
申请人： SVENSKA ROTOR MASKINER AB
发明人： ERIKSSON, Leif , TIMUSKA, Karlis
IPC分类号： F04C18/16
CPC分类号： F04C29/02 , Y10S418/01
摘要： In a rotary displacement compressor, preferably of the screw rotor type there is provided a first liquid circulation circuit with liquid injection means (15) and a liquid separator (16) in the outlet channel (14) of the compressor. A second liquid circulation circuit including a pump (20) is provided for lubricating the bearings (9, 10), which circuit operates at a lower pressure level than the first circuit. Therethrough the amount of compressed gas dissolved in the liquid supplied to the bearings (9, 10) is kept at a low level so that the lubrication ability of the liquid, usually oil, will be maintained. According to the invention a leakage connection (31) is present which communicates the high pressure end of the compressor working space (3) to a liquid tank (26) in the second circuit, and through a drainage connection (32) that tank (26) is in communication with the compressor working space (3) at a lower pressure. Through the drainage connection (32) the pressure in the second circuit corresponds to that lower pressure, and through the two connections (31, 32) the amount of liquid in the second circuit is controlled.

4. 发明公开

EP1007853A1 OIL-FREE SCREW ROTOR APPARATUS 失效
标题翻译：无油螺杆转子
公开(公告)号：EP1007853A1
公开(公告)日：2000-06-14
申请号：EP98928802.2
申请日：1998-06-17
申请人： SVENSKA ROTOR MASKINER AB
发明人： TIMUSKA, Karlis , SUNDSTRÖM, Mats
IPC分类号： F04C29/02 , F04C18/16
CPC分类号： F16C33/10 , F04C18/16 , F04C29/0021 , F04C29/02 , F04C2240/54 , F04C2240/56 , F16C17/14 , F16C32/0651 , F16C33/109 , F16C37/002 , F16C2360/43 , Y10S418/01
摘要： The invention relates to a rotary screw machine that is completely oil-free. Known rotary screw machines with cooling, sealing, lubrication of the screw rotors and oil-lubrication and oil-cooling of the bearings have been replaced with water-lubricated and water-cooled bearings. Each screw rotor (102) is mounted in a water-lubricated radial slide bearing (1) and one trunnion (31) of the rotor co-acts with a water-lubricated thrust bearing (9, 10) which acts both as a hydrodynamic and a hydrostatic bearing. The trunnion bearing housing (21) is in fluid connection with the rotor housing, both along the trunnion and via a conduit (27) from the bearing housing interior to the gas inlet (108) of the screw rotor or via a channel which is cut off from said inlet.

5. 发明授权

EP0741851B1 REFRIGERATION SYSTEM AND A METHOD FOR REGULATING THE REFRIGERATION CAPACITY OF SUCH A SYSTEM 失效
标题翻译：冷却系统和方法冷强力控制，一项投资的
公开(公告)号：EP0741851B1
公开(公告)日：1998-11-04
申请号：EP94910073.9
申请日：1994-02-03
申请人： SVENSKA ROTOR MASKINER AB
发明人： ÖHMAN, Henrik
IPC分类号： F25B1/047 , F25B41/04 , F25B49/02 , F04C29/08
CPC分类号： F04C28/12 , F04C29/042 , F25B1/047 , F25B5/04 , F25B41/04 , F25B2400/13 , F25B2400/23 , F25B2600/2509
摘要： A refrigeration system having a rotary screw compressor (11), a condenser (12), first pressure reducing means (13), an economizer (14), second pressure reducing means (15) and an evaporator (16) is provided with an economizer channel (22, 23) connecting the economizer (14) to a closed working chamber of the compressor (11). The refrigeration capacity is regulated by a valve (17) in the economizer channel (22, 23), governed by sensing means (28) sensing a parameter of the refrigerant in the refrigeration loop, which parameter is indicative of the required refrigeration capacity. The valve (17) regulates the mass flow of gaseous refrigerant through the economizer channel. In a preferred embodiment the closed working chamber of the compressor (11) is also connectable to the compressor inlet through a return channel (23, 24), which connection also is regulated by the valve (17).

6. 发明公开

EP0748420A1 ROTARY SCREW COMPRESSOR WITH THRUST BALANCING MEANS UTILIZING DIFFERENT PRESSURE LEVELS AND A METHOD FOR OPERATING SUCH A COMPRESSOR 失效
标题翻译：推力补偿资金的螺杆式压缩机
公开(公告)号：EP0748420A1
公开(公告)日：1996-12-18
申请号：EP95911520.0
申请日：1995-02-23
申请人： SVENSKA ROTOR MASKINER AB
发明人： ENGLUND, Arnold , TIMUSKA, Karlis
IPC分类号： F04C18 , F01C21 , F04C28 , F04C29
CPC分类号： F04C28/06 , F01C21/02 , F04C29/0021
摘要： In a rotary screw compressor there is provided balancing piston means (8, 14) for balancing the axial gas force that affects the rotors at operation. According to the invention the balancing piston means (8, 14) in one axial direction is exposed to high pressure on at least one pressure surface (9) thereof, and in the opposite direction to either low pressure or intermediate pressure acting on at least one pressure surface (16) thereof. A valve (32) is provided for alternatively selecting the low or the intermediate pressure connection. Therefore the thrust balancing force can be adapted to different working conditions such as starting up and full load operation in order to avoid under- or overbalancing of the axial gas force.

7. 发明公开

EP0616674A1 METHOD FOR REGENERATIVE HEAT EXCHANGE 失效
标题翻译：方法可再生热交换。
公开(公告)号：EP0616674A1
公开(公告)日：1994-09-28
申请号：EP93900485.0
申请日：1992-12-16
申请人： SVENSKA ROTOR MASKINER AB
发明人： ESSLE, Stefan , SANGFORS, Bo
IPC分类号： F23L7 , F23L15 , F24H8 , F28D19
CPC分类号： F24H8/003 , F23L15/02 , Y02B30/104 , Y02E20/348
摘要： L'invention concerne un procédé pour obtenir un échange d'énergie optimal lors d'un échange de chaleur régénératif entre la combustion de l'air et des gaz d'évacuation humides pré-refroidis, dans un dispositif de refroidissement (15). En laissant l'humidité contenue dans ces gaz d'évacuation, se condenser sur les surfaces de transfert de chaleur, cette humidité est transférée du côté de l'air où elle est vaporisée, amenant ainsi des avantages, par exemple un échange d'énergie augmenté. Selon l'invention, il s'est avéré possible d'obtenir une augmentation supplémentaire de l'échange d'énergie de manière simple, en s'assurant que les surfaces de transfert de chaleur du côté des gaz d'évacuation deviennent réellement imbibées d'eau lorsqu'il s'agit du côté des gaz d'évacuation, par exemple en laissant l'eau de condensation du dispositif de refroidissement (15) s'égoutter ou s'écouler sur les surfaces de transfert de chaleur de telle sorte que ces surfaces demeurent humides pendant la traversée complète du côté (10) de la combustion d'air.

8. 发明授权

EP0323476B1 ROTOR FOR A ROTARY SCREW MACHINE 失效
标题翻译：旋转螺丝机转子
公开(公告)号：EP0323476B1
公开(公告)日：1990-12-27
申请号：EP87906021.8
申请日：1987-09-04
申请人： SVENSKA ROTOR MASKINER AB
发明人： TIMUSKA, Karlis
IPC分类号： F04C18/16
CPC分类号： F04C18/16 , F04C18/084 , F04C2230/91 , F05C2201/021 , F05C2201/903 , F05C2225/06 , F05C2225/08 , F05C2253/04
摘要： A rotor for a rotary screw machine, in particular a male rotor, having helical lobes and intermediate grooves. The rotor has a core consisting of a shaft (1) of a first material and an intermediate layer (2) of a second material mounted on the shaft. The surface of the rotor is coated with a plastic layer. The invention also concerns a rotary screw machine provided with such a rotor. The invention further relates to a method for manufacturing the rotor, whereby a rod is extruded to a shape substantially corresponding to the shape of the rotor and then being cut up into rotor bodies. The plastic layer is injection moulded around each of said rotor bodies. After making a hole in the rotor body it is mounted on the shaft. The rotor can be manufactured without any cutting machining and meets the required demands on shape accuracy and strength.

9. 发明公开

EP0383810A1 ROTARY DISPLACEMENT COMPRESSOR 失效
标题翻译：旋转排量压缩机。
公开(公告)号：EP0383810A1
公开(公告)日：1990-08-29
申请号：EP88909392.0
申请日：1988-10-13
申请人： SVENSKA ROTOR MASKINER AB
发明人： SJÖHOLM, Lars , LUNDIN, Stig
IPC分类号： F04C18 , F04B49 , F04C28
CPC分类号： F04C28/125
摘要： La présente invention se rapporte à un compresseur volumétrique rotatif à régulation de type Vi. Un canal de liaison (8, 9, 10) relie l'espace utile du compresseur au canal de pression (5). Dans ce canal de pression (8, 9, 10) est disposé un organe (13) servant à détecter le sens de l'écoulement qui le traverse. Le sens de l'écoulement donne une indication de la présence d'une sur-compression ou d'une sous-compression. Les signaux provenant de l'organe (13) de détection du sens de l'écoulement affectent la position d'un bord mobile (29) de l'orifice de sortie (32), de sorte que ce bord (29) se déplace dans une position dans laquelle la compression interne correspond à la pression de sortie. En utilisant le sens de l'écoulement comme paramètre directeur pour la régulation Vi à la place de la différence de pression ou de la consommation d'énergie du moteur primaire selon les techniques connues, on obtient une adaptation plus précise du rapport volumétrique à la pression de sortie.

10. 发明授权

EP0276252B1 SCREW ROTOR COMPRESSOR 失效
标题翻译：螺杆转子压缩机
公开(公告)号：EP0276252B1
公开(公告)日：1990-01-03
申请号：EP87904634.0
申请日：1987-06-26
申请人： SVENSKA ROTOR MASKINER AB
发明人： SJÖHOLM, Lars , EDSTRÖM, Sören
IPC分类号： F04C18/16
CPC分类号： F04C29/12 , F04C18/16 , F04C28/08 , F04C28/18
摘要： A screw compressor drivingly connected to a prime mover with variable speed provided with an inlet port having a section acting as a by-pass at low rotor speeds only.

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