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公开(公告)号：EP3256730A1
公开(公告)日：2017-12-20
申请号：EP16749897.1
申请日：2016-02-11
IPC分类号： F04C19/00
CPC分类号： F04C19/008 , F04C29/12 , F04C2240/30
摘要： A pump includes a housing that contains a liquid, and a rotor including a plurality of blades extending radially from a shaft, and defining a conical space. A port member is disposed within the conical space. The port member defines an inlet port in communication with a low pressure region, a discharge port in communication with a high pressure region, and an anti-cavitation port in communication with a fluid supply having a pressure between the low and the high pressure regions. Each pair of adjacent blades cooperates with the liquid and the port member to enclose a variable volume bucket, wherein rotation of the rotor selectively positions a bucket in an inlet position adjacent the inlet port to draw in fluid, in an anti-cavitation position wherein the bucket is adjacent the anti-cavitation port and fluid is admitted into the bucket, and a discharge position wherein the bucket is positioned adjacent the discharge port to discharge fluid.
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公开(公告)号：EP2373892A1
公开(公告)日：2011-10-12
申请号：EP08879032.4
申请日：2008-12-18
IPC分类号： F04C19/00
CPC分类号： F04C19/008 , F04C19/001 , F04C19/005 , F04C2240/20
摘要： A liquid ring pump having a channel including a first opening which opens into a first bucket formed by rotor blades. The first opening is located along an arcuate path between a closing edge of an inlet port and a leading edge of a discharge port The inlet port and discharge port are in a port plate of the liquid ring pump. The channel has a second opening which opens into a second bucket formed by rotor blades The second opening is on an arcuate path between a closing edge of the discharge port and a leading edge of the inlet port. A fluid pathway interconnects the first and second openings. At least a portion of the liquid ring pump forming the channel is disposed in a circumferential cylindrical cavity, wherein the cavity is formed from a plurality of axially extending rotor blade ends.
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3.发明公开METHOD OF CONVERTING LIQUID RING PUMPS HAVING SEALING LIQUID VENTS 审中-公开PROCESS FOR LIQUID环的变频泵密封液体空气孔
公开(公告)号：EP2446145A1
公开(公告)日：2012-05-02
申请号：EP10792501.8
申请日：2010-06-02
IPC分类号： F04C19/00
CPC分类号： F04C19/005 , F04C19/008 , F04C2220/20 , F04C2230/00 , Y10T29/49238 , Y10T29/49716
摘要： Converting a liquid ring pump which vents sealing liquid (compressant) from the working chamber of the pump to a liquid ring pump having a gas venting system by retasking a selected passage of the liquid ring pump. The passage is selected from a group of passages consisting of (1) a sealing liquid introduction passage and (2) a sealing liquid vent passage.
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公开(公告)号：EP2373892B1
公开(公告)日：2017-03-22
申请号：EP08879032.4
申请日：2008-12-18
IPC分类号： F04C19/00
CPC分类号： F04C19/008 , F04C19/001 , F04C19/005 , F04C2240/20
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公开(公告)号：EP2394060A1
公开(公告)日：2011-12-14
申请号：EP09839799.5
申请日：2009-02-05
IPC分类号： F04C19/00
CPC分类号： F04C19/00 , F01C21/10 , F04C2240/802 , F04C2280/04 , F05C2201/0442 , F05C2201/046 , F05C2201/0466 , F05C2201/0475 , F05C2225/00 , Y10T29/49243 , Y10T29/49245
摘要： A liquid ring pump is provided that includes an annular housing having an inner surface forming a housing cavity. The annular housing is filled with an operating fluid during operation of the pump. The operating fluid forms an eccentric liquid ring in the annular housing during operation of the pump. A rotor is disposed in the housing cavity and includes a plurality of rotor blades. A shaft extends into the annular housing into the housing cavity. The plurality of rotor blades extend radially outward from the shaft toward the inner surface of the annular housing. A liner formed from a corrosion resistant material is disposed substantially flush with at least a portion of the annular housing inner surface opposite a plurality of rotor blade ends.
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