US20100221128A1 - Compact Dry-Running Piston Compressor - Google Patents

Compact Dry-Running Piston Compressor Download PDF

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Publication number
US20100221128A1
US20100221128A1 US12/718,361 US71836110A US2010221128A1 US 20100221128 A1 US20100221128 A1 US 20100221128A1 US 71836110 A US71836110 A US 71836110A US 2010221128 A1 US2010221128 A1 US 2010221128A1
Authority
US
United States
Prior art keywords
housing
electric motor
piston compressor
compressor according
compact dry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/718,361
Other languages
English (en)
Inventor
Joerg MELLAR
Michael Hartl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH, Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Assigned to KNORR-BREMSE SYSTEME FUER SCHIENENFAHRZEUGE GMBH, KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER SCHIENENFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MELLAR, JOERG, HARTL, MICHAEL
Publication of US20100221128A1 publication Critical patent/US20100221128A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/128—Crankcases

Definitions

  • the present invention relates to a compact dry-running piston compressor, particularly for commercial vehicles, having at least one cylinder for compressing air by way of an associated piston.
  • the piston can be moved by electric motor via a crank drive composed of a crankshaft and a connecting rod, which crank drive is rotatably mounted by way of permanently lubricated roller bearings in a compressor housing which has no oil bath.
  • the crank drive generates a cooling air flow within the housing as a result of the movement cycle.
  • auxiliary compressors use is made of small electromotively driven units which produce compressed air for consumers or loads within the vehicle.
  • Modern compressor concepts based on piston compressors also permit oil-free operation.
  • the bearing points of the crank drive are in this case mounted using roller bearings, and the roller bearing arrangements are provided with local permanent lubrication.
  • the oil-free piston compressor has been developed in particular for servicing and environmental reasons.
  • DE 10 2004 042 944 A1 discloses a generic dry-running piston compressor.
  • the piston compressor is composed substantially of a compressor unit for producing compressed air, which compressor unit is driven by a drive unit for producing a rotational movement.
  • the drive unit is usually in the form of an electric motor.
  • a crankshaft is rotatably mounted within the crankcase of the compressor unit.
  • Two connecting rods are attached to the crankshaft, which connecting rods are connected to associated pistons in order to convert the drive-side rotational movement into a linear movement of the pistons which, in order to compress air, are accommodated within associated cylinders.
  • the cylinders are attached to the crankcase in a 180° position.
  • an inlet-side valve which moves into its open position in the event of a vacuum being produced in the crankcase by the movement of the piston.
  • cooling air is sucked in from the outside
  • at least one outlet-side valve which is arranged spaced apart from the inlet-side valve on the crankcase, moves into its open position in the event of an excess pressure being produced in the crankcase by the movement of the piston.
  • consumed cooling air is discharged such that an internal cooling air flow flows through the crankcase as a result of the movement cycle of the pistons.
  • a compact dry-running piston compressor having at least one cylinder for compressing air via an associated piston which can be moved by electric motor via a crank drive composed of a crankshaft and a connecting rod.
  • the crank drive is rotatably mounted by way of permanently lubricated (pre-lubricated) roller bearings in a compressor housing which has no oil bath.
  • the crank drive generates a cooling air flow within the housing as a result of the movement cycle.
  • the compressor housing comprises two housing sections separated by a partition such that the crank drive is accommodated within the first housing section and the electric motor is accommodated within the second housing section.
  • a roller bearing which is common to the crank drive and to the electric motor, is inserted into the partition. The roller bearing is situated in the cooling air flow passing through the first housing section.
  • An advantage according to the invention is, in particular, that a common housing is provided for the compressor unit and for the drive, which housing ensures complete encapsulation with respect to contaminated environments.
  • the thermal problems arising with such encapsulation are solved overall for the compressor unit and for the drive unit by way of a common cooling air flow.
  • the solution according to the invention can be accomplished because of the realization that the driven-side end of the motor windings is the decisive heat source, which can be efficiently cooled by way of local cooling measures in conjunction with a common housing.
  • the solution according to the invention is optimized with regard to the required number of roller bearings. It is thus possible to use a single roller bearing jointly for the electric motor and the crankshaft mounting. If the single roller bearing is cooled in a targeted fashion, then an adequate cooling action is also obtained for the electric motor, which is made possible by way of the heat conduction in the region of the partition.
  • At least one opening for branching or diverting parts of the cooling air flow of the first housing section into the second housing section is provided in the partition.
  • the cooling air flow can be conducted in a targeted fashion also into the region of the second housing section, such that the cooling action can be improved using this measure.
  • the crankshaft is preferably rotatably mounted not only by way of the roller bearing arranged in the partition but also, at its other side, by way of a further roller bearing.
  • a total of two roller bearings for the crankshaft is therefore adequate for rotatably mounting the crank drive together with the electric motor.
  • the further roller bearing can be inserted, so as to be encapsulated with respect to the outside, in a cover, which is flat in terms of its basic shape, of the first housing section.
  • the flat cover provides an easily dismountable facility for accessing the interior of the crankcase.
  • the second roller bearing should likewise be situated in the cooling air flow passing through the first housing section.
  • the rotor of the electric motor be attached directly to an end, which projects into the second housing section, of the crankshaft.
  • This attachment may take place by way of a conical flange with an end-side screw connection.
  • the crankshaft and rotor may be formed in one piece. This is expedient in particular if the electric motor is in the form of a brushless electric motor whose rotor need merely be equipped with permanent magnets.
  • the stator is provided with electric coil windings.
  • the commutating electronics required for such a brushless electric motor which is preferably to be used here can likewise be integrated in a simple manner into the second housing section.
  • the commutating electronics should preferably be arranged on a flat printed circuit board which is arranged in the region of the housing wall.
  • the latter may be closed off by a cover which can be screwed on.
  • the second housing section is closed off at the end side by a cover which is likewise flat in terms of basic shape. After the cover has been mounted, the inner region of the electric motor is accessible for servicing and repair purposes.
  • the integrated compressor housing designed according to the invention also has, in the region of the first housing section, an opening for the releasable attachment of a cylinder, which is preferably formed as a separate component.
  • a cylinder which is preferably formed as a separate component.
  • inflow ducts are provided in the piston compressor, the cross sections of which inflow ducts vary such that different cooling air flows flow through the individual assemblies.
  • the individual assemblies are the crankcase, the winding space of the electric motor and the commutating electronics. It is advantageous for the corresponding regions to be supplied optimally with a sufficient quantity of cooling air.
  • FIG. 1 is a longitudinal section view through a compact dry-running piston compressor
  • FIG. 2 is a longitudinal section view through a compact dry-running piston compressor with inflow ducts.
  • the compressor has a single cylinder 1 in which is arranged a piston 2 for compressing air sucked in from the environment via a cylinder head 3 .
  • the linear reciprocating working movement of the piston 2 is generated by a crank drive.
  • the crank drive is composed essentially of a crankshaft 4 and a connecting rod 5 .
  • the crankshaft 4 is mounted so as to be rotatable with respect to the compressor housing 7 by way of two roller bearings 6 a and 6 b.
  • the compressor housing 7 is composed of a first housing section 8 , such as a first housing half, which forms the crankcase, and a second housing section 9 , such as a second housing half, which houses an electric motor 10 .
  • a first housing section 8 such as a first housing half
  • a second housing section 9 such as a second housing half, which houses an electric motor 10 .
  • housing “half” is not limited to an evenly divided housing.
  • the electric motor 10 is in the form of a brushless electric motor and includes a stator 11 composed of coil windings with an iron core.
  • the stator 11 interacts with a rotor 12 , which is equipped with permanent magnets.
  • the rotor 12 of the electric motor 10 is screwed onto a conical end of the crankshaft 4 , which conical end projects into the second housing half 9 .
  • Commutating electronics 13 of the electric motor 10 are integrated in the wall of the second housing half 9 .
  • the commutating electronics 13 are accommodated on one printed circuit board.
  • the second housing half 9 is closed off by a flat cover 14 at the end side by use of individual screws.
  • the first housing half 8 also has a cover 15 , which is flat in terms of its basic shape and which closes off the housing half 8 at the end side also by use of screw connections.
  • the cover 15 of the first housing half 8 includes a seat for the roller bearing 6 a of the crankshaft 4 .
  • the other roller bearing 6 b of the crankshaft 4 is located in a partition 16 of the compressor housing 8 .
  • the roller bearing 6 b is provided both for mounting the crankshaft 4 at one side and also for mounting the rotor 12 of the electric motor 10 .
  • the two roller bearings 6 a and 6 b are situated in a cooling air flow which passes through the first housing half 8 .
  • the cooling air flow passes, in a manner controlled by a valve, via a cylinder-side duct 17 into the interior of the first housing half 8 and leaves the latter through a valve-switched opening 18 .
  • the cooling air flow is conducted through the first housing half 8 in such a way that the two roller bearings 6 a and 6 b are cooled.
  • the partition 16 has a ring of openings 19 .
  • FIG. 2 shows another embodiment in which inflow ducts 20 are provided.
  • the inflow ducts 20 are supplied with air via the duct 17 .
  • These inflow ducts convey cooling air to the individual components, with the quantity of cooling air being defined by the respective cross sections.
  • the flow of air is shown by the block arrows in FIG. 2 .
  • the invention is not restricted to the preferred exemplary embodiments described above.
  • the electric motor it is also possible for the electric motor to be of some other type.
  • any type is suitable which can be accommodated, so as to be encapsulated, within the housing half 9 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US12/718,361 2007-09-06 2010-03-05 Compact Dry-Running Piston Compressor Abandoned US20100221128A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007042318.9A DE102007042318B4 (de) 2007-09-06 2007-09-06 Kompakter trockenlaufender Kolbenverdichter
DE102007042318.9 2007-09-06
PCT/EP2008/006916 WO2009033556A1 (de) 2007-09-06 2008-08-22 Kompakter trockenlaufender kolbenverdichter

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/006916 Continuation WO2009033556A1 (de) 2007-09-06 2008-08-22 Kompakter trockenlaufender kolbenverdichter

Publications (1)

Publication Number Publication Date
US20100221128A1 true US20100221128A1 (en) 2010-09-02

Family

ID=40039675

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/718,361 Abandoned US20100221128A1 (en) 2007-09-06 2010-03-05 Compact Dry-Running Piston Compressor

Country Status (6)

Country Link
US (1) US20100221128A1 (de)
EP (1) EP2185820B1 (de)
CN (1) CN101796297B (de)
BR (1) BRPI0816383B1 (de)
DE (1) DE102007042318B4 (de)
WO (1) WO2009033556A1 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150075369A1 (en) * 2011-01-28 2015-03-19 Wabtec Holding Corp. Oil-free air compressor for rail vehicles with air ventilation
EP2886862A1 (de) * 2013-12-17 2015-06-24 Kaeser Kompressoren Se Kompressor
US20150322937A1 (en) * 2014-05-09 2015-11-12 Westinghouse Air Brake Technologies Corporation Oil-free compressor crankcase cooling arrangement
US20150377295A1 (en) * 2012-12-20 2015-12-31 Aktiebolaget Skf Machine arrangement
US20180100493A1 (en) * 2016-10-07 2018-04-12 Westinghouse Air Brake Technologies Corporation Piston Cylinder Arrangement for an Oil Free Compressor Having Cooling Passageways and Method of Cooling Wrist Pin Bearing Surface
US10041486B2 (en) * 2013-02-14 2018-08-07 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Crank-driven arrangement for a piston compressor
US10238146B2 (en) 2016-02-27 2019-03-26 Brandon Nedelman Hookah vaporizor machine
US10284122B2 (en) 2014-08-26 2019-05-07 Bsh Hausgeraete Gmbh Method for stopping a compressor and compressor of a refrigeration appliance
RU2731373C1 (ru) * 2018-11-22 2020-09-02 Битцер Кюльмашиненбау Гмбх Компрессор холодильного агента
US10767639B2 (en) 2013-03-04 2020-09-08 Wabco Gmbh Compressor arrangement for compressed air supply facility
US11041489B2 (en) 2017-10-23 2021-06-22 Zf Cv Systems Hannover Gmbh Compressor assembly for operating a compressed air supply system, compressed air supply system, and vehicle
US11333140B2 (en) 2019-06-11 2022-05-17 Caterpillar Inc. Cooling block for multi-cylinder air compressor
US11396868B2 (en) * 2020-03-09 2022-07-26 Schaeffler Technologies AG & Co. KG Linear actuator pumping system
WO2023101771A1 (en) * 2021-12-03 2023-06-08 Energy Recovery, Inc. Fluid handling systems including a compressor

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Publication number Priority date Publication date Assignee Title
IT1399335B1 (it) * 2009-09-02 2013-04-16 Dorin Mario Spa Compressore per impianti di refrigerazione e/o condizionamento.
FR2950270A1 (fr) * 2009-09-22 2011-03-25 Air Liquide Dispositif de distribution de jets de fluide sans joint tournant avec moyens de refroidissement des parties mobiles
JP5748106B2 (ja) * 2011-06-03 2015-07-15 アイシン精機株式会社 流体ポンプ
WO2013172189A1 (ja) * 2012-05-18 2013-11-21 株式会社ヴァレオジャパン 電動圧縮機
WO2017000241A1 (zh) * 2015-06-30 2017-01-05 安徽美芝制冷设备有限公司 压缩机
CN105673435B (zh) * 2016-01-27 2018-01-05 蚌埠移山压缩机制造有限公司 一种新型气体压缩机
CN106014918B (zh) * 2016-05-13 2018-10-12 蚌埠市金鹏燃气设备制造有限公司 一种实用气体压缩机
CN105864001B (zh) * 2016-05-13 2018-10-12 蚌埠市金鹏燃气设备制造有限公司 一种提高气体洁净程度的气体压缩机
DE102016011504A1 (de) 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH System für ein Nutzfahrzeug umfassend einen Schraubenkompressor sowie einen Elektromotor
DE102016011442A1 (de) * 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH System für ein Nutzfahrzeug umfassend einen Schraubenkompressor sowie einen Elektromotor
DE102016014787A1 (de) * 2016-12-10 2018-06-14 Wabco Gmbh Verdichteranordnung, Druckluftversorgungsanlage zum Betreiben einer Pneumatikanlage und Verfahren zur Montage einer Verdichteranordnung
DE102018005567A1 (de) 2018-07-13 2020-01-16 Daimler Ag Antriebseinrichtung für ein Kraftfahrzeug, insbesondere für einen Kraftwagen
DE102018124757B4 (de) * 2018-10-08 2024-01-11 Nabtesco Automotive Corporation Elektrisch angetriebene Verdichteranordnung
CN111237164B (zh) * 2020-01-16 2022-03-25 湖北气佬板节能技术有限公司 一种易于维护的空压机活塞装置

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US3338509A (en) * 1965-07-07 1967-08-29 Borg Warner Compressors
US5139394A (en) * 1990-04-13 1992-08-18 Kabushiki Kaisha Toshiba Axial flow compressor with insertable bearing mount
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US5807108A (en) * 1996-09-24 1998-09-15 Dentalwerk Burmoos Gesellschaft M.B.H. Dental handpiece
US6131406A (en) * 1997-06-25 2000-10-17 Bitzer Kuehlmaschinenbau Gmbh Refrigerant compressor
DE10138070A1 (de) * 2001-08-03 2003-02-20 Knorr Bremse Systeme Kolbenkompressor mit einem Kühlluftstrom
US6568921B2 (en) * 2000-01-29 2003-05-27 Bitzer Kuehlmaschinenbau Gmbh Refrigerant compressor
US20030107278A1 (en) * 2001-12-11 2003-06-12 Agnes Michael Jeffrey Brushless motor having double insulation
WO2006024510A1 (de) * 2004-09-02 2006-03-09 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kolbenkompressor mit einem internen kühlluftstrom im kurbelgehäuse
US20070041847A1 (en) * 2005-08-19 2007-02-22 Hiroshi Inoue Piston-reciprocating gas compressor
US20070160483A1 (en) * 2006-01-10 2007-07-12 Hiroshi Inoue Booster-type gas compressor
US20090016908A1 (en) * 2005-08-26 2009-01-15 Michael Hartl Multi-cylinder, dry-running piston compressor a cooling air flow

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US3338509A (en) * 1965-07-07 1967-08-29 Borg Warner Compressors
US5139394A (en) * 1990-04-13 1992-08-18 Kabushiki Kaisha Toshiba Axial flow compressor with insertable bearing mount
US5152677A (en) * 1990-04-18 1992-10-06 Bauer Kompressoren Gmbh Dry-running reciprocating compressor
US5807108A (en) * 1996-09-24 1998-09-15 Dentalwerk Burmoos Gesellschaft M.B.H. Dental handpiece
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US6568921B2 (en) * 2000-01-29 2003-05-27 Bitzer Kuehlmaschinenbau Gmbh Refrigerant compressor
DE10138070A1 (de) * 2001-08-03 2003-02-20 Knorr Bremse Systeme Kolbenkompressor mit einem Kühlluftstrom
US20030107278A1 (en) * 2001-12-11 2003-06-12 Agnes Michael Jeffrey Brushless motor having double insulation
WO2006024510A1 (de) * 2004-09-02 2006-03-09 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kolbenkompressor mit einem internen kühlluftstrom im kurbelgehäuse
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US20090016908A1 (en) * 2005-08-26 2009-01-15 Michael Hartl Multi-cylinder, dry-running piston compressor a cooling air flow
US20070160483A1 (en) * 2006-01-10 2007-07-12 Hiroshi Inoue Booster-type gas compressor

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9856866B2 (en) 2011-01-28 2018-01-02 Wabtec Holding Corp. Oil-free air compressor for rail vehicles
US20150075369A1 (en) * 2011-01-28 2015-03-19 Wabtec Holding Corp. Oil-free air compressor for rail vehicles with air ventilation
US9702410B2 (en) * 2012-12-20 2017-07-11 Aktiebolaget Skf Machine arrangement
US20150377295A1 (en) * 2012-12-20 2015-12-31 Aktiebolaget Skf Machine arrangement
US10041486B2 (en) * 2013-02-14 2018-08-07 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Crank-driven arrangement for a piston compressor
US10767639B2 (en) 2013-03-04 2020-09-08 Wabco Gmbh Compressor arrangement for compressed air supply facility
US20160319809A1 (en) * 2013-12-17 2016-11-03 Kaeser Kompressoren Se Compressor
EP2886862A1 (de) * 2013-12-17 2015-06-24 Kaeser Kompressoren Se Kompressor
CN106164487A (zh) * 2013-12-17 2016-11-23 凯瑟压缩机欧洲股份公司 压缩机
US10677236B2 (en) * 2013-12-17 2020-06-09 Kaeser Kompressoren Se Compressor
WO2015091587A1 (de) * 2013-12-17 2015-06-25 Kaeser Kompressoren Se Kompressor
US20150322937A1 (en) * 2014-05-09 2015-11-12 Westinghouse Air Brake Technologies Corporation Oil-free compressor crankcase cooling arrangement
US10284122B2 (en) 2014-08-26 2019-05-07 Bsh Hausgeraete Gmbh Method for stopping a compressor and compressor of a refrigeration appliance
US10238146B2 (en) 2016-02-27 2019-03-26 Brandon Nedelman Hookah vaporizor machine
US10208743B2 (en) * 2016-10-07 2019-02-19 Westinghouse Air Brake Technologies Corporation Piston cylinder arrangement for an oil free compressor having cooling passageways and method of cooling wrist pin bearing surface
US20180100493A1 (en) * 2016-10-07 2018-04-12 Westinghouse Air Brake Technologies Corporation Piston Cylinder Arrangement for an Oil Free Compressor Having Cooling Passageways and Method of Cooling Wrist Pin Bearing Surface
US11041489B2 (en) 2017-10-23 2021-06-22 Zf Cv Systems Hannover Gmbh Compressor assembly for operating a compressed air supply system, compressed air supply system, and vehicle
RU2731373C1 (ru) * 2018-11-22 2020-09-02 Битцер Кюльмашиненбау Гмбх Компрессор холодильного агента
US11543160B2 (en) 2018-11-22 2023-01-03 Bitzer Kuehlmaschinenbau Gmbh Refrigerant compressor with gas equalizer duct
US11333140B2 (en) 2019-06-11 2022-05-17 Caterpillar Inc. Cooling block for multi-cylinder air compressor
US11396868B2 (en) * 2020-03-09 2022-07-26 Schaeffler Technologies AG & Co. KG Linear actuator pumping system
WO2023101771A1 (en) * 2021-12-03 2023-06-08 Energy Recovery, Inc. Fluid handling systems including a compressor

Also Published As

Publication number Publication date
DE102007042318B4 (de) 2017-11-30
EP2185820A1 (de) 2010-05-19
CN101796297A (zh) 2010-08-04
DE102007042318A1 (de) 2009-03-12
BRPI0816383B1 (pt) 2019-10-08
BRPI0816383A2 (pt) 2015-03-03
WO2009033556A1 (de) 2009-03-19
EP2185820B1 (de) 2019-04-10
CN101796297B (zh) 2012-02-01

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