EP0964159A2 - Gerotorpumpe für flüssige Medien - Google Patents
Gerotorpumpe für flüssige Medien Download PDFInfo
- Publication number
- EP0964159A2 EP0964159A2 EP99110645A EP99110645A EP0964159A2 EP 0964159 A2 EP0964159 A2 EP 0964159A2 EP 99110645 A EP99110645 A EP 99110645A EP 99110645 A EP99110645 A EP 99110645A EP 0964159 A2 EP0964159 A2 EP 0964159A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gerotor
- chamber
- pump
- bearing
- rotor
- 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.)
- Withdrawn
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/50—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
Definitions
- the invention relates to a gerotor pump for liquid media with a Pump housing, a cylindrical chamber in the pump housing, a gerotor barrel set accommodated in the cylindrical chamber, the is driven by a pump drive shaft to rotate the pumping liquid from a suction connection of the pump into one Intake area of the chamber and the pumped liquid from a discharge area of the chamber to a pressure port drive out, wherein the gerotor rotor set an outer rotor with one of the Circumferential surface of the chamber radially facing outer peripheral surface having.
- the gerotor pumps are valve-free, compact, self-priming Pumps with positive displacement, which are continuous Generate pump flow with a minimum of pressure fluctuations.
- the gerotor liquid pumps have a gerotor pump set, which consists of a ring rotor rotatably mounted in the cylindrical chamber or external rotor with internal teeth and one from the pump drive shaft rotating driven inner rotor with external teeth exists, the number of teeth of the inner rotor is 1 less than that Number of teeth on the outer rotor.
- the axis of rotation of the inner rotor runs parallel to the axis of rotation of the outer rotor with an eccentric offset, so that the inner rotor driven by the pump drive shaft only in one certain angular range in the circumferential direction of the chamber meshing in the Interlocking of the outer rotor engages to the Gerotor-Laufsatz to To drive rotation.
- the suction angle range of the chamber is via a suction slot e.g. in one the chamber on the opposite side of the pump drive Side closing cover with a suction connection in connection.
- the discharge angle range of the chamber is above one Ejection slot in connection with a pressure connection, so that when rotating a flow from the suction connection to the pressure connection the pump is generated.
- Gerotor pumps are often made from a single pump housing Made of brass material or bronze and with a gerotor barrel set Stainless steel.
- the outer rotor is of the gerotor barrel set directly in the cylindrical chamber of the Housing mounted so that it with its outer peripheral surface on the Circumferential surface of the chamber slides during pumping.
- the problem the friction that occurs between the pump housing and the An outer rotor has been attempted to be solved by making a small one Radial play between the outer circumference of the outer rotor and the circumferential surface approved by the Chamber.
- the invention has for its object a gerotor pump of the beginning to improve the type mentioned in such a way that it can also be Excellent pump running properties over a long period Has lifespan.
- the invention proposes that between the radially opposite circumferential surfaces of the Chamber and the outer rotor a roller bearing or a plain bearing element Storage of the outer rotor is arranged in the chamber.
- the invention treads the unusual path, one Integrate the bearing arrangement into the chamber for the gerotor barrel set.
- the Rolling bearing or plain bearing element reduces that for pumps according to the state effects of abrasion and heating observed in technology Friction to a considerable extent, the pump according to the invention excellent running properties with significantly reduced operating noise having. It has been shown that the arrangement of the Rolling bearing or plain bearing element in the chamber for the gerotor barrel set no adverse effects on pump performance properties or has pump characteristics.
- roller bearing e.g. a Ball bearings, roller bearings or needle bearings.
- the outer ring of the rolling bearing lies on the peripheral surface of the cylindrical chamber, whereas the Inner ring of the rolling bearing on the outer circumference of the outer rotor of the Gerotor treadmill sits. It is also a version of a rolling bearing without Inner ring conceivable, in which case the rolling elements directly on the run according to the prepared circumferential surface of the outer rotor.
- the variant with the plain bearing element can in the case of the plain bearing element, for example, around an annularly closed one or act bearing bush composed of bearing shells whose Bearing surface made of a sliding material with a low coefficient of friction consists.
- materials for the slide bearing element come preferably Plastics, carbon fiber materials and / or ceramic materials in Question. Very good experiences were made with a plain bearing element Made Teflon.
- the slide bearing element is a slide film that has been inserted into the chamber is and extends in the circumferential direction of the chamber.
- the slide film can e.g. consist of at least one of the aforementioned materials.
- the Embodiment with sliding film is characterized in that it Manufacturing expenditure of the pump almost not increased at all, therefore is particularly inexpensive and yet the tasks sought after Features of the low-friction, quiet run.
- the pump housing and the gerotor runner set are different Materials, especially metals, can be formed, so is according to a preferred embodiment of the gerotor pump according to the Invention proposed that at least the chamber peripheral surface forming part of the pump housing and the gerotor rotor set from one stainless steel (stainless steel) are formed.
- the Gerotor barrel set made from silicon carbide. It can be provided be that the barrel set on its outer circumference and possibly on its Provide end faces with sliding surfaces, such as a sliding film attached to them is.
- the Task with a gerotor pump with the features mentioned above proposed that in the cylindrical chamber at least one thrust bearing in the form of a roller bearing or a plain bearing element for axial Storage of the gerotor barrel set is provided.
- Thrust bearings in the form of a roller bearing or plain bearing element for axial Storage of the gerotor barrel between the gerotor barrel and the provided axially delimiting surfaces of the pump housing.
- Special advantages with regard to the improvement of the pump running properties and the increase in the life of the pump arise when in addition to the above-mentioned thrust bearing arrangement
- Radial bearing according to one of claims 1 - 7 for the gerotor in the cylindrical chamber is provided, which should not be excluded that the axial bearing and the radial bearing of the gerotor barrel set by means of a combined bearing, such as an angular contact ball bearing or both axial forces and radial forces absorbing slide bearing element he follows.
- a gerotor liquid pump according to the invention may depend on the desired pump power e.g. with engine speeds between 50 and 6000 rpm can be operated. It is suitable for pumping thin liquids Media such as water, beverages, fuel, HFA hydraulic fluid and the like, although it is not excluded that they are also used as mineral oil pumps can be used. It can therefore be used both in the industrial sector can also be used in the private household sector.
- the pump is used in the food sector, for example for beverage dosing
- To be used is to use food safe Materials for those coming into contact with the pump medium Pay attention to pump components.
- Fig. 1a is a preferred embodiment of the invention in one Longitudinal representation shown.
- the gerotor pump 1 has a pump chamber housing 3 with a circular cylindrical one Recess 5 on the connection face 7 of the pump chamber housing 3.
- the circular cylindrical recess 5 forms a chamber in which Gerotor running set 9 to be explained, which of a drive shaft 11 of a drive motor 13 is driven in rotation.
- the drive motor 13 is with its housing 15 directly on the Connection end face 7 opposite end face 17 of the pump chamber housing 3 arranged.
- the shaft 11 extends through the bore 19 through into the chamber 5 of the pump chamber housing 3.
- On the front side 17 of the pump chamber housing 3 is the annular gap 21 between the shaft 11 and the circumference of the bore 19 through a shaft seal 23 for Motor 13 sealed off.
- an inner ring or inner rotor 25 of the gerotor barrel set 9 via a coupling 27, e.g. a key or the like, for common Rotation coupled to the shaft 11, wherein the inner ring 25 coaxial with Shaft 11 arranged on the pump-side end portion of the shaft 11 is.
- the gerotor rotor 9 is within its axial play on the shaft 11 held axially movable.
- the recess 5 extending terminal cover 29 On the connection face 7 of the pump chamber housing 3 is a the recess 5 extending terminal cover 29 is provided, the has a suction port 31 and a pressure port 33.
- the Suction port 31 is in the form of a ring segment-like recess in the Connection cover 29 formed suction kidney 35 with a suction area 37 of the chamber 5 in connection, whereas the pressure connection 33 via one as a ring segment-like recess in the connection cover 29 formed ejection kidney 39 with an ejection region 41 of the chamber 5 communicates.
- FIG. 1c shows in a (not to scale) top view of the connection face 7 of the Pump chamber housing 3 provided with external teeth and driven by the shaft 11 inner rotor 25 within one with a Internal toothing formed outer rotor 43.
- the outer rotor 43 is in the cylindrical chamber 5 is rotatable essentially coaxially to the chamber 5 stored, the common axis of the chamber 5 and the outer rotor 43 parallel to the common axis of the shaft 11 and the inner rotor 25 is offset.
- the internal teeth of the Outer rotor 43 has one tooth more than the external toothing of the Eccentric to the outer rotor 43 arranged inner rotor 25.
- the position the suction kidney 35 provided in the connection cover 29 and the Position of the ejection kidney 39 provided in the connection cover 29 are approximately indicated at 35 and 39 in projection.
- Radial bearing 90 arranged between the peripheral surface 6 of the chamber 5 and Outer peripheral surface 8 of the outer rotor 43 .
- This can be a roller bearing,
- ball bearings with one fitted in the chamber and on the Circumferential surface 6 of the chamber adjacent outer ring, one on the Outer rotor of the gerotor barrel 43 seated inner ring and with Balls as rolling elements between the inner ring and the outer ring, act.
- the radial bearing 90 can be a slide bearing element, for example, a slide film appropriately inserted into the chamber 5 or an annularly closed plain bearing bush made of carbon fiber material, Ceramic material or plastic, in particular Teflon, may be formed.
- a spring-loaded pressure relief valve or pressure relief valve 47 provided in a channel 49 which is formed in the connection cover 29 is and the suction port 31 and the suction kidney 35 with the Pressure port 33 or the discharge kidney 39 connects.
- the valve body 51 of the pressure relief valve 47 can against the force of the spring 53 to the suction side (Intake kidney 35) open, depending on the pressure in the Area of the pressure connection 33 or the discharge kidney 39.
- the pressure relief valve 47 then conducts liquid from the pressure side (at 39) to Suction side (at 35).
- the characteristic of the spring 53 and Valve construction can maintain a desired performance characteristic be that the valve at certain pressures on the Pressure side only opens so far that excess flow rate over the Channel 49 reaches the suction side and the pump in the rest of the relevant pressure on the pressure side desired flow rate accordingly the desired performance characteristics via the pressure connection to promote "consumer".
- the spring 53 can, if necessary, against one Spring with a different characteristic.
- that has Valve 47 functions as an overpressure safety device. When you reach one predetermined maximum pressure opens the valve to maximum passage, so that the channel 49 forms the main flow path and the pump from the Conveying pressure side all the way to the suction side.
- the pressure relief valve 47 also as a pressure relief device for the pump 1 works.
- valve 47 alternatively, be designed so that it is only the function of overpressure protection Fulfills.
- valve spring 53 is supported on the one hand on a shoulder 55 of the valve body 51 - and on the other hand on a screw 57, which in a Threaded bore 59 of the connection cover 29 is screwed in.
- a valve lifter connected to the valve body 51 shown, with its end remote from the valve body 51 in a Bore 63 of the screw plug 57 is guided.
- a particular advantage of the gerotor pump 1 according to the invention is that despite their simple and compact construction for pumping Water or similar low-viscosity media with pump pressures up to 60 - 70 bar and pump speeds up to 6000 rpm can be used.
- the Pump 1 according to the invention also has permanent high-performance operation excellent running properties and a long service life and is also easy to maintain.
- annular groove 68 is provided at a small axial distance from the chamber 5, which surrounds the motor shaft 11.
- This annular groove 68 stands with a recess 70 in the bottom of the chamber 5 in connection, the recess 70 in the Angular range of the chamber 5 runs, which forms the suction area and over which the suction kidney 35 extends.
- the Recess 70 a kidney shape corresponding to the suction kidney 35 and lies - seen axially - in alignment with the suction kidney 35.
- This simple construction has the effect of leakage in the small annular gap 72 (gap size e.g. 0.2 - 0.4 mm) between the Drive shaft 11 and the bore 19 pressure occurring (approximately Operating pressure) via the annular groove 68 and the kidney-shaped recess 70 Suction side of the chamber 5 is reduced so far that in the area between the annular groove 68 and the commercially available shaft sealing ring 23 only a low residual liquid pressure, for example 0 - 0.1 bar is present, of the sealing ring 23 without any sealing problems can be included, especially since commercially available shaft seals for Pressures of 0.5 - 30 bar are available.
- FIGS. 1a - 1d it should be emphasized that it is not necessary to implement the reduction of the leakage fluid pressure, Provide leakage fluid channels in the drive shaft 11, so that also in this respect a contribution to the simplification of the pump construction without impairment efficiency is given.
- the drive motor 13 directly on the housing block 3rd is arranged and with its comparatively short motor shaft 11 den Gerotor drive set 9 drives.
- the exploitation of the motor shaft 11 immediately as a pump shaft avoids the usual shaft couplings between Pump shaft and a separate motor shaft.
- the drive shaft 11 can easily under Avoiding expensive shaft bearings centered within the pump housing 3 be so that low-wear operation is guaranteed. Since the Running set 9 is supported radially by the bearing element 90 and the drive shaft 11 engages centered in the barrel 9, an additional is unnecessary Bearing of the drive shaft 11 or a separate bearing arrangement for the Shaft 11 in the pump housing 3.
- connection cover 29 and the Connection face 7 of the pump chamber housing 3 an O-ring seal 76 is provided radially outside the chamber 5.
- a thrust bearing assembly for the gerotor 9 in the cylindrical chamber 5 may be provided.
- the thrust bearing arrangement can Rolling bearings and / or plain bearing elements between which the cylindrical Chamber 5 axially delimiting surfaces 65 and 66 and each comprise opposite end faces of the gerotor rotor 9.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Description
- Fig. 1a
- zeigt ein erstes Ausführungsbeispiel der Erfindung in einer Längsschnittdarstellung.
- Fig. 1b
- zeigt einen Anschlußdeckel der Gerotor-Flüssigkeitspumpe aus Fig. 1a in ausgebautem Zustand in einer Draufsicht (gemäß Fig. 1a von links) auf eine mit einem Pumpenkammergehäuse zu verbindende Stirnseite, wobei ein Bereich herausgebrochen dargestellt ist.
- Fig. 1c
- zeigt eine Draufsicht auf eine Stirnseite des Pumpenkammergehäuses der Pumpe nach den Fig. 1a und 1b.
- Fig. 1d
- zeigt eine der Fig. 1c entsprechende Ansicht des Pumpenkammergehäuses, wobei jedoch der Gerotor-Laufsatz ausgebaut ist.
Claims (10)
- Gerotorpumpe für flüssige Medien miteinem Pumpengehäuse (3, 29),einer zylindrischen Kammer (5) in dem Pumpengehäuse (3, 29),einem in der zylindrischen Kammer (5) aufgenommenen Gerotor-Laufsatz (9), der von einer Pumpenantriebswelle (11) rotierend anzutreiben ist, um die zu pumpende Flüssigkeit von einem Sauganschluß (31) der Pumpe her in einen Ansaugbereich der Kammer (5) anzusaugen und die angesaugte Pumpflüssigkeit aus einem Ausstoßbereich der Kammer (5) zu einem Druckanschluß (33) hin auszutreiben, wobei der Gerotor-Laufsatz (9) einen Außenrotor (43) mit einer der Umfangsfläche (6) der Kammer (5) radial zugewandten Außenumfangsfläche (8) aufweist,
dadurch gekennzeichnet,
daß zwischen den radial einander gegenüberliegenden Umfangsflächen (6, 8) der Kammer (5) und des Außenrotors (43) ein Wälzlager (90) oder ein Gleitlagerelement (90) zur radialen Lagerung des Außenrotors (43) in der Kammer (5) angeordnet ist. - Gerotorpumpe nach Anspruch 1,
dadurch gekennzeichnet,
daß es sich bei dem Wälzlager (90) um ein Kugellager, Rollenlager oder Nadellager handelt. - Gerotorpumpe nach Anspruch 1,
dadurch gekennzeichnet,
daß es sich bei dem Gleitlagerelement (90) um eine ringförmig geschlossene, oder aus Lagerschalen zusammengesetzte Lagerbuchse handelt. - Gerotorpumpe nach Anspruch 1,
dadurch gekennzeichnet,
daß es sich bei dem Gleitlagerelement (90) um eine Gleitfolie handelt. - Gerotorpumpe nach Anspruch 1,
dadurch gekennzeichnet,
daß es sich bei dem Gleitlagerelement (90) um eine an der Kammerumfangsfläche (6) oder an der Außenrotorumfangsfläche (8) haftend aufgetragene Gleitmateriatschicht handelt. - Gerotorpumpe nach Anspruch 1, 3, 4 oder 5,
dadurch gekennzeichnet,
daß das Gleitlagerelement (90) aus Kohlefasermaterial oder/und aus einem Kunststoff oder/und aus einem keramischen Material gebildet ist. - Gerotorpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß zumindest der die Kammerumfangsfläche (6) bildende Teil des Pumpengehäuses (3, 29) und der Gerotor-Laufsaztz (9) aus Edelstahl gebildet sind. - Gerotorpumpe für flüssige Medien miteinem Pumpengehäuse (3, 29),einer zylindrischen Kammer (5) in dem Pumpengehäuse (3, 29),einem in der zylindrischen Kammer (5) aufgenommenen Gerotor-Laufsatz (9), der von einer Pumpenantriebswelle (11) rotierend anzutreiben ist, um die zu pumpende Flüssigkeit von einem Sauganschluß (31) der Pumpe her in einen Ansaugbereich der Kammer (5) anzusaugen und die angesaugte Pumpflüssigkeit aus einem Ausstoßbereich der Kammer (5) zu einem Druckanschluß (33) hin auszutreiben, wobei der Gerotor-Laufsatz (9) einen Außenrotor (43) mit einer der Umfangsfläche (6) der Kammer (5) radial zugewandten Außenumfangsfläche (8) aufweist,insbesondere nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
daß in der zylindrischen Kammer (5) wenigstens ein Axiallager in Form eines Wälzlagers oder eines Gleitlagerelementes zur axialen Lagerung des Gerotor-Laufsatzes (9) vorgesehen ist. - Gerotorpumpe nach Anspruch 8,
dadurch gekennzeichnet,
daß an beiden Stirnseiten des Gerotor-Laufsatzes (9) ein jeweiliges Axiallager in Form eines Wälzlagers oder Gleitlagerelementes zur axialen Lagerung des Gerotor-Laufsatzes (9) zwischen dem Gerotor-Laufsatz und den die Kammer (5) axial begrenzenden Flächen (65, 66) des Pumpengehäuses (3, 29) vorgesehen ist. - Gerotorpumpe nach Anspruch 8 oder 9,
dadurch gekennzeichnet,
daß das Axiallager ein kombiniertes Axial-/Radiallager, insbesondere Schrägkugellager, ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29810577U DE29810577U1 (de) | 1998-06-12 | 1998-06-12 | Gerotorpumpe für flüssige Medien |
DE29810577U | 1998-06-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0964159A2 true EP0964159A2 (de) | 1999-12-15 |
EP0964159A3 EP0964159A3 (de) | 2001-01-17 |
Family
ID=8058471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99110645A Withdrawn EP0964159A3 (de) | 1998-06-12 | 1999-06-02 | Gerotorpumpe für flüssige Medien |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0964159A3 (de) |
DE (1) | DE29810577U1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2208889A1 (de) * | 2009-01-20 | 2010-07-21 | BSH Bosch und Siemens Hausgeräte GmbH | Getränkeautomat |
DE102011089528B3 (de) * | 2011-12-22 | 2013-04-11 | Continental Automotive Gmbh | Pumpe zum Pumpen von Luft |
US11506093B2 (en) | 2017-08-29 | 2022-11-22 | Atlas Copco Airpower, Naamloze Vennootschap | Machine provided with an oil pump and a method to start such a machine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1110166A (en) * | 1964-07-09 | 1968-04-18 | Eickmann Karl | Improvements in or relating to an internally-meshing gear pump or motor |
DE1553211A1 (de) * | 1966-09-09 | 1970-11-05 | Karl Stock | Hydraulikmotor oder Hydraulikpumpe |
DE2114874A1 (de) * | 1971-03-27 | 1972-10-12 | Dowty Technical Developments Ltd., Brockhampton, Cheltenham (Großbritannien) | Hydraulische Verdrängungspumpe |
DE4401783A1 (de) * | 1994-01-21 | 1995-07-27 | Cerasiv Gmbh | Förderaggregat mit einer keramischen Innenzahnradpumpe |
DK138195A (da) * | 1995-12-05 | 1997-06-06 | Danfoss As | Pumpe eller motor |
-
1998
- 1998-06-12 DE DE29810577U patent/DE29810577U1/de not_active Expired - Lifetime
-
1999
- 1999-06-02 EP EP99110645A patent/EP0964159A3/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2208889A1 (de) * | 2009-01-20 | 2010-07-21 | BSH Bosch und Siemens Hausgeräte GmbH | Getränkeautomat |
DE102011089528B3 (de) * | 2011-12-22 | 2013-04-11 | Continental Automotive Gmbh | Pumpe zum Pumpen von Luft |
US11506093B2 (en) | 2017-08-29 | 2022-11-22 | Atlas Copco Airpower, Naamloze Vennootschap | Machine provided with an oil pump and a method to start such a machine |
Also Published As
Publication number | Publication date |
---|---|
DE29810577U1 (de) | 1999-10-21 |
EP0964159A3 (de) | 2001-01-17 |
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