Liquid Ring Patents (Class 417/68)
  • Patent number: 10669850
    Abstract: An impeller-type liquid ring compressor having a particular bearing configuration. Such a bearing arrangement may completely support the impeller as it rotates, eliminating many of the problems inherent in the prior art designs without changing the general overhung impeller design. This may allow the impeller-type liquid ring compressor to be easily retrofitted in existing use environments, such as, for example, oil and gas processing facilities, oil refineries, and petrochemical processing facilities. In some exemplary embodiments, a thrust bearing may be located on the front face of the impeller, or radial bearings may be disposed between the vanes of the impeller. A radial bearing and thrust bearing may further be disposed on the shaft side of the impeller close to the impeller itself. The compressor may be configured so that the process fluid carries heat away from each of these bearings.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: June 2, 2020
    Inventor: Brian Blackwell
  • Patent number: 10655626
    Abstract: Liquid ring pumps are used to pump a variety of fluid types. Corrosive fluids are easily handled by the work fluid but can cause corrosion of pumping mechanisms. The present invention provides a magnetically driven liquid ring pump with corrosion resistant pumping mechanisms which achieves a longer time between service intervals.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: May 19, 2020
    Assignee: Edwards Limited
    Inventors: Gary Peter Knight, Andrew James Seeley, Geoffrey Young, Duncan Michael Price
  • Patent number: 10641267
    Abstract: Disclosed is a component-replaceable water ring vacuum pump in which inner components within a head unit may be disassembled and replaced without separation of the head unit from a main body, thus shortening an operation time and improving operation efficiency through prevention of leakage of an inner liquid during a replacement process. The water ring vacuum pump includes a main body provided with a shaft, a rotor rotated together with the shaft within the main body, a head unit coupled to both sides of the main body, a guide bearing provided within the head unit, and a mechanical seal configured to block inner gas. A bearing bracket to support the guide bearing is detachably fastened to one side of the head unit by a bolt, and an inner cap and an outer cap are assembled to the inner and outer surfaces of the bearing bracket by fixing bolts.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 5, 2020
    Assignee: VACCOMP CO., LTD.
    Inventor: Seok Won Lee
  • Patent number: 10625205
    Abstract: Dry pumps are used to pump a variety of gas mixtures from the semiconductor industry. The present invention provides a liquid ring pump located between the dry pump and an abatement device to remove soluble corrosive materials prior to the exhaust gases entry to the abatement device, the work fluid exhausted from the liquid ring pump being separated from the gas prior to entry to the abatement device.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: April 21, 2020
    Assignee: Edwards Limited
    Inventors: Christopher Mark Bailey, Clive Marcus Lloyd Tunna, Jack Raymond Tattersall, Ingo Stephen Graham, Michael Roger Czerniak, Gary Peter Knight, Darren Mennie, Duncan Michael Price, Derek Martin Baker, Andrew James Seeley
  • Patent number: 10539123
    Abstract: In situations where a vacuum system is suddenly overloaded, there is a risk of mechanical damage being sustained, for example, bearing damage, gear slippage or rotor and/or stator collisions. Sudden overloads can also lead to electrical damage, for example, over-currents or power surges. Therefore a pressure regulating apparatus is provided for use in a vacuum pumping system having an inlet, an outlet and a conduit interposed between, and in fluid communication with, the inlet and the outlet, wherein the cross-sectional area of the conduit is greater than that required to meet the conductance requirements of the inlet and the outlet.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: January 21, 2020
    Assignee: Edwards Limited
    Inventors: Neil Turner, Jack Raymond Tattersall, Alan Ernest Kinnaird Holbrook, Matthew Richard Wickes
  • Patent number: 10359055
    Abstract: A centrifugal gas compressor with rotating hollow housing and an independently rotating, turbine compresses gas bubbles in capillary tubes and recovers energy from the liquid drain (sometimes a liquid recycler). The housing rotatably retains an internal spool having the turbine. Gas-liquid emulsion fed to the capillaries generates compressed gas-liquid emulsion at a radially distal annular region in an annular lake within the spool. Compressed gas leaves the lake and is ported away. A turbine blade edge in spilt over liquid drives the turbine, converting angular velocity/momentum into shaft torque as recovered energy. Blade captured liquid is recycled to capillary inputs.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: July 23, 2019
    Assignee: CARNOT COMPRESSION, LLC
    Inventors: Mark A. Cherry, Robert A. Alderman, D. Hans Shillinger
  • Patent number: 10099169
    Abstract: Liquid ring pumps are used to pump a variety of fluid types. The present invention provides a two stage liquid ring pump through which an exhaust gas comprising compounds to be destroyed is passed. The exhaust gas passes through the first stage to a gas abatement device, following which it is passed back to the second stage of the liquid ring pump for removal of the compounds formed in said abatement device. The stages of the liquid ring pump may be adjustable.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: October 16, 2018
    Assignee: Edwards Limited
    Inventors: Andrew James Seeley, Duncan Michael Price, Gary Peter Knight
  • Patent number: 10100834
    Abstract: 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.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: October 16, 2018
    Assignee: GARDNER DENVER NASH LLC
    Inventors: Douglas Eric Bissell, Wilson Fabian Gaibor
  • Patent number: 10054122
    Abstract: A conical member for a pump head of a liquid ring pump, the conical member including a body, the body defining a first body opening on a first end positioned to abut a first pump opening, a second body opening on the first end positioned to abut a second pump opening, and a port. The conical member further includes a radially outer lip arranged about the first end and positioned to abut a pump aperture. A sealing liquid introduction path is arranged to introduce sealing liquid to a working chamber, the sealing liquid introduction path arranged at least partially between the second body opening and an outlet, and a gas vent passage is arranged to vent gas from the working chamber, the gas vent passage arranged at least partially between the port and the first body opening.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 21, 2018
    Assignee: GARDNER DENVER NASH LLC
    Inventors: Douglas Eric Bissell, Charles Howard Beers
  • Patent number: 10036387
    Abstract: A liquid ring pump includes a planar port plate having first and second planar walls, a sidewall which defines a shaft receiving aperture, an inlet, and an outlet. An opening is formed in the port plate and includes an open end that extends through the sidewall and an open face that extends through the first planar wall. A rotor shaft is rotatable about a central axis and is positioned such that a portion of the rotor shaft extends into the shaft receiving aperture. An aperture is formed in the port plate and positioned substantially opposite the opening. The opening, a space defined between the rotor shaft and the sidewall, and the aperture, cooperate to define a channel that extends between a first side of the shaft receiving aperture and a second side of the shaft receiving aperture, wherein the channel is formed entirely coplanar with the port plate.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: July 31, 2018
    Assignee: GARDNER DENVER NASH LLC
    Inventors: Ramesh Balkunge Shenoi, Charles Howard Beers, Richard Gerard Cadotte
  • Patent number: 9964110
    Abstract: A liquid-ring vacuum pump comprises a pump casing and a shaft eccentrically mounted in the pump casing. An impeller and a rotor of a drive motor are connected to the shaft. A disk cam is arranged parallel to the impeller. A first main bearing for the shaft is arranged between the impeller and the rotor of the drive motor, on the plane of the disk cam. The impeller is arranged between the first main bearing and a second main bearing. The arrangement of the bearings prevents the shaft from bending, thus allowing the leakage gap between the impeller and the disk cam to be kept small.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: May 8, 2018
    Assignee: Sterling Industry Consult GmbH
    Inventors: Heiner Kösters, Matthias Tamm, Daniel Schütze
  • Patent number: 9919243
    Abstract: The gas compression method/system restricts flow of emulsified liquid-gas mixture through many substantially radial capillary tube-passages in a rotating disk by either one-way valves, narrowing the passages, hydraulic impedance and/or reinforcement of coriolis forces in terminal end tail segments of the capillary passages. Compressed gas is released from peripherally collected compressed gas-liquid emulsion (beyond the terminal ends of the tubes) in a arcuate peripheral disc space when the compressed gas bubbles emerge from the peripherally collected emulsion. A compressed gas drain draws off gas from the peripheral space. Liquid drain draws off liquid from the space. In different embodiments, radial outboard flow through the capillaries is effected by various one-way valves which may be a single valve in the passage or multiple valves. Coriolis force in tail segments is enhanced by angular displacement in the direction of rotation. Valves may be used in combination with such tail-end segments.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: March 20, 2018
    Assignee: Carnot Compression, LLC
    Inventors: Mark A. Cherry, Robert A. Alderman, D. Hans Shillinger
  • Patent number: 9689387
    Abstract: A liquid ring pump includes a port plate coupled to a pump head. The port plate has an opening with a first end at a first section and a second end at a second section. The first section opens through a portion of a surface forming a first face of the port plate. The second section opens at the second end into a shaft receiving aperture of the port plate. The first and second sections are continuous. The first section is angularly between the closing edge of a port plate outlet and leading edge of a port plate inlet. A length measured from the first section to the inlet's leading edge is less than a length measured from the first section to the outlet's leading edge. The first section does not open into the outlet or inlet.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: June 27, 2017
    Assignee: GARDNER DENVER NASH, LLC
    Inventors: Ramesh Balkunge Shenoi, Charles Howard Beers, Richard Gerard Cadotte
  • Patent number: 9644570
    Abstract: An internal combustion engine includes in one aspect a source of a pressurized working medium and an expander. The expander has a housing and a piston, movably mounted within and with respect to the housing, to perform one of rotation and reciprocation, each complete rotation or reciprocation defining at least a part of a cycle of the engine. The expander also includes a septum, mounted within the housing and movable with respect to the housing and the piston so as to define in conjunction therewith, over first and second angular ranges of the cycle, a working chamber that is isolated from an intake port and an exhaust port. Combustion occurs at least over the first angular range of the cycle to provide heat to the working medium and so as to increase its pressure.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 9, 2017
    Assignee: LiquidPiston, Inc.
    Inventors: Nikolay Shkolnik, Alexander C. Shkolnik
  • Patent number: 9593692
    Abstract: A pump housing support for use in a pump assembly, the pump assembly including a plurality of component parts which include a seal housing, a drive shaft having a rotation axis, an impeller and a pump housing, the pump housing which includes a main liner, the pump housing support including a base and a mounting member which includes a body portion to which a part of the pump housing can be mounted and a locating flange extending therefrom, the locating flange having first and second locating surfaces on opposing sides thereof and where the main liner is located on the first locating surface and the seal housing is located on the second locating surface.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: March 14, 2017
    Assignee: Weir Minerals Australia Ltd.
    Inventors: Glenn Raymond Smith, Michael Christopher Foreman
  • Patent number: 9556871
    Abstract: A liquid-ring, rotating-casing compressor comprises a shaft carrying an impeller having a core and a plurality of radially extending vanes rotatably coupled to the shaft for rotation around a first axis, and a tubular casing mounted for rotation relative to the impeller around a second axis that is parallel to and offset from the first axis. The casing and impeller define a compression zone wherein edges of the vanes rotate in increasing proximity to an inner surface of the casing and an expansion zone wherein edges of the vanes rotate in increasing spaced-apart relationship along an inner surface of the casing. An inlet port communicates with the expansion zone, an outlet port communicates with the compression zone, and a drive imparts rotating motion to the casing. The eccentricity ecr of the casing relative to the impeller is between about (1?c)/4 and (1?c)/9, preferably less than half (1?c)/3.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: January 31, 2017
    Assignee: Agam Energy Systems Ltd.
    Inventor: Gad Assaf
  • Patent number: 9540936
    Abstract: A method and at least two devices demonstrate improvements to energy extraction from a compressible working fluid in a liquid ring heat engine, which has a rotor mounted in a case. A space in the case is occupied by a liquid that establishes a liquid ring piston for the rotor. The rotor defines at least a first and a second operating zone. In the first zone, the working fluid is expanded against the liquid and, in the second zone, the working fluid is re-compressed. Between the two zones, the working fluid is cooled. In one device, the cooling step occurs on the rotor in a third zone. In another device, the cooling occurs outside of the case.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: January 10, 2017
    Assignee: Ohio State Innovation Foundation
    Inventors: Codrin-Gruie Cantemir, Fabio Chiara, Marcello Canova
  • Patent number: 9541086
    Abstract: A modular liquid ring pump has a liquid ring overload protection system including a passage from a working chamber directly to the pump discharge passage and a mechanical relief valve configured to release liquid from the working chamber during compressor overload. The liquid ring pump, when configured to have two stages, has an inter-stage by-pass system that includes an opening in an inter-stage passage and a pressure sensitive mechanical valve that allows the discharge of a first stage compressor to flow directly to the pump discharge at start up or during low pressure operation. The liquid ring pump's modular construction may be easily configured from a single stage pump to a two-stage pump and vice versa by using the same bearings, head, and drive system and only changing the body, cone, and rotor.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: January 10, 2017
    Assignee: GARDNER DENVER NASH LLC
    Inventors: Charles Howard Beers, Ramesh Balkunge Shenoi
  • Patent number: 9453412
    Abstract: A rotating liquid ring rotating casing gas turbine (10) has at least one liquid ring rotating casing (13) having an eccentrically mounted impeller (11) adapted to rotate within a surrounding liquid ring (14) so as to form chambers (15) of successively increasing volume between adjacent vanes of the impeller. A working fluid formed by high pressure gas is injected into the impeller where the chambers are narrow via a fluid inlet (19) within a static axial bore (23) of the impeller so as to rotate the impeller and in so doing the gas expands isentropically. A fluid outlet (20) within the static axial bore of the impeller and fluidly separated from the fluid inlet allows the working fluid to escape at low pressure and low temperature.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: September 27, 2016
    Assignee: Agam Energy Systems Ltd.
    Inventor: Gad Assaf
  • Patent number: 9181948
    Abstract: A liquid ring rotating casing compressor (LRRCC), including a shaft, an impeller having a core and a plurality of radially extending vanes rotatably coupled to the shaft, a tubular casing having an inner surface and an outer surface eccentrically rotatably disposed with the impeller and disc-shaped portions laterally coupled to the vanes and/or to the core. The casing defines with the impeller a compression zone, wherein edges of the vanes rotate in increasing proximity to an inner surface of the casing and an expansion zone and edges of the vanes rotate in increasing spaced-apart relationship along an inner surface of the casing. An inlet port communicates with the expansion zone, an outlet port communicates with the compression zone, and there is also provided a drive for rotating motion to the casing.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: November 10, 2015
    Assignee: AGAM ENERGY SYSTEMS LTD.
    Inventor: Gad Assaf
  • Publication number: 20150093260
    Abstract: A modular liquid ring pump has a liquid ring overload protection system including a passage from a working chamber directly to the pump discharge passage and a mechanical relief valve configured to release liquid from the working chamber during compressor overload. The liquid ring pump, when configured to have two stages, has an inter-stage by-pass system that includes an opening in an inter-stage passage and a pressure sensitive mechanical valve that allows the discharge of a first stage compressor to flow directly to the pump discharge at start up or during low pressure operation. The liquid ring pump's modular construction may be easily configured from a single stage pump to a two-stage pump and vice versa by using the same bearings, head, and drive system and only changing the body, cone, and rotor.
    Type: Application
    Filed: November 11, 2013
    Publication date: April 2, 2015
    Applicant: GARDNER DENVER NASH LLC
    Inventors: Charles Howard BEERS, Ramesh Balkunge SHENOI
  • Patent number: 8944778
    Abstract: The invention relates to a liquid ring pump (1) for generating vacuum and for pumping a flow of sewage in a vacuum sewage system. The liquid ring pump comprises in the direction of the flow of sewage a pump inlet (11), an inlet chamber (13), a pump housing (14) provided with a rotor (15) arranged on a drive shaft (16) provided with a mechanical seal (20), an outlet chamber (17), and an pump outlet (19). The mechanical seal (20) is arranged within the outlet chamber (17). The outlet chamber (17) is provided with an integrated extension (18) providing an enlargement of the outlet chamber (17) in order to retain the flow of sewage in the outlet chamber (17) before it is discharged from the pump outlet (19) in order to improve the lubrication of the mechanical seal (20).
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: February 3, 2015
    Assignee: Evac International Oy
    Inventor: Vesa Lappalainen
  • Publication number: 20150030467
    Abstract: A method for mechanically heating a liquid mixture of substances is described. In a liquid-ring pump (1), a foam phase is compressed and the compression heat is transferred to the mixture of substances. An apparatus designed as a liquid-ring pump (1) for mechanically heating a liquid mixture of substances is also described. Said liquid-ring pump (1) comprises an impeller (12) eccentrically arranged in a cup-shaped pump housing (11) as well as a tangential suction port (13) and a tangential delivery port (14). A gas port (15) for introducing an inert process gas extends into the suction port (13) and/or into the cup-shaped pump housing (1).
    Type: Application
    Filed: January 18, 2013
    Publication date: January 29, 2015
    Inventor: Wolfgang Spiess
  • Publication number: 20150017027
    Abstract: A liquid-ring, rotating-casing compressor comprises a shaft carrying an impeller having a core and a plurality of radially extending vanes rotatably coupled to the shaft for rotation around a first axis, and a tubular casing mounted for rotation relative to the impeller around a second axis that is parallel to and offset from the first axis. The casing and impeller define a compression zone wherein edges of the vanes rotate in increasing proximity to an inner surface of the casing and an expansion zone wherein edges of the vanes rotate in increasing spaced-apart relationship along an inner surface of the casing. An inlet port communicates with the expansion zone, an outlet port communicates with the compression zone, and a drive imparts rotating motion to the casing. The eccentricity ecr of the casing relative to the impeller is between about (1?c)/4 and (1?c)/9, preferably less than half (1?c)/3.
    Type: Application
    Filed: September 22, 2014
    Publication date: January 15, 2015
    Inventor: Gad Assaf
  • Publication number: 20140377084
    Abstract: A method for operating a liquid ring vacuum pump employs taking vibration measurements of the pump and comparing the measurements with a prescribed cavitation threshold. In addition, a measurement representing the liquid content in the gas to be conveyed is taken. This measurement is compared with a prescribed threshold. The rotational speed of the liquid ring vacuum pump is reduced if the prescribed cavitation threshold has been exceeded and the liquid content is less than the prescribed threshold. The rotational speed is increased if the prescribed cavitation threshold has been exceeded and the liquid content is greater than the prescribed threshold. A liquid ring vacuum pump is designed for implementing the method. Due to the regulation depending on the oscillations of the pump, the pump can be operated near the cavitation boundary without any risk of damage.
    Type: Application
    Filed: December 12, 2012
    Publication date: December 25, 2014
    Inventors: Heiner Kösters, Matthias Tamm, Daniel Schütze
  • Publication number: 20140322039
    Abstract: A liquid-ring vacuum pump comprises a pump casing and a shaft eccentrically mounted in the pump casing. An impeller and a rotor of a drive motor are connected to the shaft. A disk cam is arranged parallel to the impeller. A first main bearing for the shaft is arranged between the impeller and the rotor of the drive motor, on the plane of the disk cam. The impeller is arranged between the first main bearing and a second main bearing. The arrangement of the bearings prevents the shaft from bending, thus allowing the leakage gap between the impeller and the disk cam to be kept small.
    Type: Application
    Filed: November 22, 2012
    Publication date: October 30, 2014
    Inventors: Heiner Kösters, Matthias Tamm, Daniel Schütze
  • Publication number: 20140294609
    Abstract: A device for pumping and treating gases is disclosed. The device features a stator having a plurality of pumping stages connected in series one after another between a suction side and a delivery side by the inter-stage ducts. The device also includes an inner tube and a blind outer tube, the tubes inserted one inside the other and made of ceramic material, the inner tube connected to the delivery side of the rotor housing of a pumping stage and the outer tube connected to the stator and communicating with at least one inter-stage duct formed in the stator, the tubes defining a path for the pumped gases. The device also includes a plasma source located outside the stator to generate a plasma in the path of the pumped gases.
    Type: Application
    Filed: October 19, 2012
    Publication date: October 2, 2014
    Inventors: Julien Palisson, Arnaud Favre
  • Publication number: 20140286797
    Abstract: A liquid-ring vacuum pump comprises a pump casing and an impeller that is eccentrically mounted in the pump casing. The impeller is made of a material having a modulus of elasticity of less than 4000 N/mm2.
    Type: Application
    Filed: November 21, 2012
    Publication date: September 25, 2014
    Inventors: Matthias Tamm, Heiner Kösters, Daniel Schütze
  • Patent number: 8740575
    Abstract: 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.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: June 3, 2014
    Assignee: Gardner Denver Nash, LLC
    Inventors: Douglas Eric Bissell, Athanasios Diakomis, Louis J. Lengyel
  • Publication number: 20140119955
    Abstract: A liquid ring pump includes a port plate coupled to a pump head. The port plate has an opening with a first end at a first section and a second end at a second section. The first section opens through a portion of a surface forming a first face of the port plate. The second section opens at the second end into a shaft receiving aperture of the port plate. The first and second sections are continuous. The first section is angularly between the closing edge of a port plate outlet and leading edge of a port plate inlet. A length measured from the first section to the inlet's leading edge is less than a length measured from the first section to the outlet's leading edge. The first section does not open into the outlet or inlet.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 1, 2014
    Applicant: GARDNER DENVER NASH, LLC
    Inventors: Ramesh Balkunge SHENOI, Charles Howard Beers, Richard Gerard Cadotte
  • Patent number: 8702297
    Abstract: Methods and systems for chemical management. In one embodiment, a blender is coupled to a processing system and configured to supply an appropriate solution or solutions to the system. Solutions provided by the blender are then reclaimed from the system and subsequently reintroduced for reuse. The blender may be operated to control the concentrations of various constituents in the solution prior to the solution being reintroduced to the system for reuse. Some chemicals introduced to the system may be temperature controlled. A back end vacuum pump subsystem separates gases from liquids as part of a waste management system.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: April 22, 2014
    Assignees: Air Liquide Electronics U.S. LP, Air Liquide Electronics Systems
    Inventors: Karl J. Urquhart, Georges Guarneri, Jean-Louis Marc, Norbert Fanjat, Laurent Langellier, Christophe Colin
  • Publication number: 20140079565
    Abstract: A helical impeller liquid ring compressor includes a compressor body cooperating with first and second cover plates to define a compression chamber for receiving a helical impeller and a liquid. The compressor body has a compression section. The first cover plate seals a suction end of the compression chamber, and has an air inlet in fluid communication with the compression chamber. The second cover plate seals a pressure end of the compression chamber, and has an air outlet in fluid communication with the compression chamber. The impeller extends through the compression chamber, and includes a shaft rod and at least one helical blade. Upon rotation of the impeller, a liquid ring is generated from the liquid, and cooperates with the shaft rod and the blade to form air chambers.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 20, 2014
    Applicant: Tekomp Technology Co., Ltd.
    Inventor: Ming-Te LU
  • Patent number: 8608451
    Abstract: A liquid ring vacuum pump for degassing molten plastic has an inlet where gases are drawn in and an outlet through which gases are blown out. A closed circulation path for the compression fluid holds a replaceable filter insert for filtering coarse contaminants out of the compression liquid, a precondensation unit upstream of the pump inlet for filtering fine contaminants out of the compression liquid, and only one continuously operating fine or ultrafine filter in the closed circulation path. The closed circulation path is closed even when the fine filter or ultrafine filter is replaced. A controller connected to the continuously operating filter directs replacement of the filter element as a function of degree of contamination, filtering time, pressure conditions, or flow velocity conditions at the filter.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: December 17, 2013
    Assignee: Gneuss Kunststofftechnik GmbH
    Inventor: Detlef Gneuss
  • Publication number: 20130089440
    Abstract: The invention relates to a liquid ring pump (1) for generating vacuum and for pumping a flow of sewage in a vacuum sewage system. The liquid ring pump comprises in the direction of the flow of sewage a pump inlet (11), an inlet chamber (13), a pump housing (14) provided with a rotor (15) arranged on a drive shaft (16) provided with a mechanical seal (20), an outlet chamber (17), and an pump outlet (19). The mechanical seal (20) is arranged within the outlet chamber (17). The outlet chamber (17) is provided with an integrated extension (18) providing an enlargement of the outlet chamber (17)in order to retain the flow of sewage in the outlet chamber (17) before it is discharged from the pump outlet (19) in order to improve the lubrication of the mechanical seal (20).
    Type: Application
    Filed: March 31, 2011
    Publication date: April 11, 2013
    Applicant: EVAC INTERNATIONAL OY
    Inventor: Vesa Lappalainen
  • Patent number: 8403625
    Abstract: A pitot tube pump having a hydraulic chamber, a fluid supply line, a fluid discharge line, and a drive, in which the supply line, the discharge line and the drive are all arranged on the same side of the hydraulic chamber. A pitot tube preferably is mounted in the hydraulic chamber on a shoulder of a fixed shaft in communication with the discharge line. The drive is preferably an electric motor with a stator which is connected in a rotationally secure manner to the fixed shaft, and a rotor which forms a part of the hydraulic chamber or which is connected in a rotationally secure manner to the hydraulic chamber.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 26, 2013
    Assignee: KSB Aktiengesellschaft
    Inventors: Axel Binder, Christoph Emde, Christoph Keller, Christoph Jaeger
  • Patent number: 8366883
    Abstract: Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: February 5, 2013
    Assignee: DEKA Products Limited Partnership
    Inventors: David F. Bednarek, Robert Andrew Charles, Andrew Coll, Jason A. Demers, Timothy P. Duggan, Gustav Heinzmann, Joseph A. Hoell, Jr., James L. Jackson, Scott A. Leonard, David W. McGill, Kingston Owens
  • Patent number: 8317388
    Abstract: Methods and systems for chemical management. In one embodiment, a blender is coupled to a processing system and configured to supply an appropriate solution or solutions to the system. Solutions provided by the blender are then reclaimed from the system and subsequently reintroduced for reuse. The blender may be operated to control the concentrations of various constituents in the solution prior to the solution being reintroduced to the system for reuse. Some chemicals introduced to the system may be temperature controlled. A back end vacuum pump subsystem separates gases from liquids as part of a waste management system.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: November 27, 2012
    Assignees: Air Liquide Electronics U.S. LP, Air Liquide Electronics Systems
    Inventors: Karl J. Urquhart, Georges Guarneri, Jean-Louis Marc, Norbert Fanjat, Laurent Langellier, Christophe Colin
  • Patent number: 8246316
    Abstract: A self priming pump system that includes a motor coupled to a centrifugal pump. A separator having a reservoir is provided for storing a limited amount of pumped fluid in advance of the centrifugal pump. A vacuum source provides a vacuum suction to the reservoir to draw pumped fluid into the reservoir to prime the pump. A float may be provided, wherein when the fluid level in the reservoir reaches a desired level, the float opens a float valve to let air into the reservoir to maintain the desired level. The float valve may have a capacity that is greater than or equal to the pumping capacity of the vacuum pump, or at least large enough to make up for a difference between the pumping capacity of the vacuum pump and an amount of fluid that can be pumped by the centrifugal pump from the reservoir.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: August 21, 2012
    Inventor: David Muhs
  • Patent number: 8235677
    Abstract: A compressing diaphragm pump having automatic air expelling and pressure abnormal-preventing features for spray use has a hollow tubular air discharge assembly having a plunger body and compressed spring as well as an air passage pierced at the wall of the water exit port and an air discharge orifice pierced of the central top surface of the air discharge assembly for connecting with the plunger body. When air is mixed within the pressurized water, the resilient force of the compressed spring is bigger than the water pressure of the pressurized water. This allows the air mixed in the pressurized water to get into the air passage and pass the plunger opening of the plunger body via through pore, and is dispelled out of the upper hood via the air discharge orifice of the air discharge assembly.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: August 7, 2012
    Inventors: Ying Lin Cai, Chao Fou Hsu
  • Publication number: 20120087808
    Abstract: The present disclosure is directed to liquid ring compressors that can be employed to remove liquid from a wet gas and/or to compress a wet gas. In one embodiment, a liquid ring compressor includes a shaft, a main body inner casing disposed about the shaft to form a chamber between the shaft and the main body inner casing, and an inlet configured to remove a portion of liquid from a wet gas and to direct the wet gas into the chamber. The liquid ring compressor also includes an impeller rotatably disposed within the chamber and configured to direct a remaining portion of the liquid in the wet gas out towards the main body inner casing to form a liquid ring within the chamber to compress the wet gas.
    Type: Application
    Filed: October 11, 2010
    Publication date: April 12, 2012
    Applicant: General Electric Company
    Inventors: Christian Aalburg, Alexander Kimberley Simpson, John Daniel Friedemann, Vittorio Michelassi
  • Publication number: 20120076671
    Abstract: 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.
    Type: Application
    Filed: June 2, 2010
    Publication date: March 29, 2012
    Inventors: Douglas Eric Bissell, Charies Howard Beers
  • Publication number: 20110300005
    Abstract: A liquid ring vacuum pump (1) for degassing plastic melts, having a pump inlet (2) where gases are taken in, and a pump outlet (3) via which gases are blown out, and having a cycle (4) for the compression liquid, wherein a replaceable filter insert is provided for filtering coarse contaminants out of the compression liquid, and wherein a precondensation system is optionally provided upstream of the pump inlet for filtering fine contaminants out of the compression liquid, is to be further developed such that the pump is able to proceed continuous operation even during a filter change and that the compression liquid cycle does not have to be interrupted, wherein permanent stable process conditions are to be established, and wherein the management of the filter system is to be designed in a simple and energy-efficient and environmentally sound manner.
    Type: Application
    Filed: February 26, 2010
    Publication date: December 8, 2011
    Inventor: Detlef Gneuss
  • Publication number: 20110243758
    Abstract: 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.
    Type: Application
    Filed: December 18, 2008
    Publication date: October 6, 2011
    Inventor: Douglas Eric Bissell
  • Publication number: 20110194950
    Abstract: The present invention is directed to a textured surface that provides for drag reduction, and therefore efficiency improvements in a liquid ring pump. At least a portion of the surfaces of the pump that contact fluid therein the pump are textured to control boundary layer separation. The texture can be a plurality of dimples are defined therein the surface. The dimples have a predetermined shape, size, density and pattern.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 11, 2011
    Inventors: Ramesh B. Shenoi, Louis J. Lengyel, Athanasios Diakomis
  • Patent number: 7980753
    Abstract: Methods and systems for chemical management. In one embodiment, a blender is coupled to a processing system and configured to supply an appropriate solution or solutions to the system. Solutions provided by the blender are then reclaimed from the system and subsequently reintroduced for reuse. The blender may be operated to control the concentrations of various constituents in the solution prior to the solution being reintroduced to the system for reuse. Some chemicals introduced to the system may be temperature controlled. A back end vacuum pump subsystem separates gases from liquids as part of a waste management system.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: July 19, 2011
    Assignees: Air Liquide Electronics U.S. LP, Air Liquide Electronics Systems SA
    Inventors: Karl J. Urquhart, Georges Guarneri, Jean-Louis Marc, Norbert Fanjat, Laurent Langellier, Christophe Colin
  • Publication number: 20110129355
    Abstract: Method for controlling one or more vacuum generators (1) and thereby the vacuum in a vacuum sewage system, in particular controlling one or more liquid ring screw pumps in such system, including beyond the generator/s (1) one or more tubular collectors or suction pipelines (2) connected to the vacuum generator and one or more toilets, urinals, grey water sinks etc (3, 4), connected to the suction pipeline through branch pipelines (6). The rotational speed of the vacuum generator (1) is controlled on the basis of the set vacuum requirement.
    Type: Application
    Filed: July 8, 2009
    Publication date: June 2, 2011
    Applicant: JETS AS
    Inventors: Olay Hofseth, Eimund Øvsthus
  • Patent number: 7946828
    Abstract: Screw type liquid ring pump including a pump housing (9) with an inlet part (3) and an outlet part (11) and rotating helical screw rotor (8) inside the housing. The rotor is connected with a shaft (7) as well as a driving unit in the form of motor, preferably an electric motor (2), whereby the pump (20) with the pump housing (9) represents an elongation of the motor (2) with the motor housing thus representing an integrated or one piece unit. The shaft seal (22, 23) is provided wholly or partially in an annular space (24) provided within the rotor (8), whereby one end of the seal rests against an annular part (25) of the screw rotor provided in the annular space (24) between the rotor and the shaft, and its other end is tightly engaged against an inwardly protruding part (21) at the outlet end of the pump.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: May 24, 2011
    Assignee: Jets A/S
    Inventors: Eimund Ovsthus, Aksel Ovsthus
  • Patent number: 7927080
    Abstract: The invention relates to a method of operating a liquid ring compressor having an impeller installed eccentrically in a compressor body, with gas being supplied to the liquid ring compressor on a suction side and gas being discharged from the liquid ring compressor on a pressure side. A liquid ring is generated in the liquid ring compressor on the inside of the compressor body by rotation of the impeller. Chambers are formed between blades of the impeller and the liquid ring and gas is drawn into these. The gas is compressed in the chambers which become smaller from the suction side to the pressure side as a result of the rotation of the eccentrically mounted impeller. The compressed gas is ejected on the pressure side. An ionic liquid is used as service liquid for generation of the liquid ring.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: April 19, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Müller, Martin Sesing, Martin Fiene, Oliver Huttenloch, Eckhard Stroefer
  • Patent number: 7878768
    Abstract: A vacuum pump having components that are subject to wear may be adjusted to compensate for the wear. In some instances, a vacuum pump may include a housing and an impeller disposed at least partially within the housing. A gap between the housing and the impeller may be adjustable to compensate for wear. In some cases, the housing may include a ring that may be moved to adjust a tolerance (or gap) between the ring and the impeller. In some instances, the ring may be rotated to adjust this gap. In other instances, the ring may be translated to adjust the tolerance.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: February 1, 2011
    Inventor: David Muhs
  • Patent number: 7871249
    Abstract: Methods and systems for chemical management. In one embodiment, a blender is coupled to a processing system and configured to supply an appropriate solution or solutions to the system. Solutions provided by the blender are then reclaimed from the system and subsequently reintroduced for reuse. The blender may be operated to control the concentrations of various constituents in the solution prior to the solution being reintroduced to the system for reuse. Some chemicals introduced to the system may be temperature controlled. A back end vacuum pump subsystem separates gases from liquids as part of a waste management system.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: January 18, 2011
    Assignees: Air Liquide Electronics U.S. LP, Air Liquide Electronics Systems SA
    Inventors: Karl J. Urquhart, Georges Guarneri, Jean-Louis Marc, Norbert Fanjat, Laurent Langellier, Christophe Colin