CN103026067A - Internal gear pump - Google Patents

Internal gear pump Download PDF

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Publication number
CN103026067A
CN103026067A CN2011800122944A CN201180012294A CN103026067A CN 103026067 A CN103026067 A CN 103026067A CN 2011800122944 A CN2011800122944 A CN 2011800122944A CN 201180012294 A CN201180012294 A CN 201180012294A CN 103026067 A CN103026067 A CN 103026067A
Authority
CN
China
Prior art keywords
internal gear
gear pump
pump
internal
external gear
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.)
Pending
Application number
CN2011800122944A
Other languages
Chinese (zh)
Inventor
H·皮希勒
A·富克斯
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN103026067A publication Critical patent/CN103026067A/en
Pending 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
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008—Enclosed motor pump units
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • 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
    • 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
    • F04C2/088—Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1433—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • F04C2210/00—Fluid
    • F04C2210/24—Fluid mixed, e.g. two-phase fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention relates to an internal gear pump (1), in particular for a motor vehicle (4), for delivering a fluid, comprising an internal gear (5) having an internally toothed ring (6), an external gear (8) having an externally toothed ring (9), wherein the teeth (7, 10) of the internal and external gear (5, 8) engage with one another, a working chamber (32) being formed between the internal gear (5) and the external gear (8), wherein the external gear (8) is provided with at least one particle-receiving-chamber (17) for receiving particles from the fluid.

Description

Internal gear pump
Technical field
The present invention relates to a kind of according to claim 1 internal gear pump as described in the preamble and a kind of according to claim 12 ejecting system as described in the preamble.
Background technique
Gear pump for and different application for be used to carry fluid.Internal gear pump has internal gear and external gear.At this, external gear arranges and the ring gear of internal gear is coupled in the external toothing of external gear with one heart around internal gear.Between internal gear and external gear, consist of the working room for delivery of fluid.May have particulate in the fluid that is transferred, these particulates may block cooperatively interacting of internal gear and external gear, because particulate may gather at the tooth root of external toothing.
EP 1 933 033 A1 illustrate a kind of internal gear pump with integrated motor.The rotor of motor also consists of the internal gear of internal gear pump at this.At this, rotor has permanent magnet.
Summary of the invention
According to the internal gear pump for delivery of fluid of the present invention, comprise in particular for the internal gear pump of Motor Vehicle: the internal gear with ring gear; External gear with external toothing, wherein, described tooth interior and external gear cooperatively interacts; The working room that consists of between described internal gear and described external gear, wherein, described external gear is provided with at least one and is used for reception from the particulate receiving chamber of the particulate of fluid.The particulate receiving chamber can receive particulate, granule or the fines that may contain in fluid, so that internal gear and external gear can not blocked by particulate thus.
In another kind of design proposal, external gear is provided with a plurality of particulate receiving chambers.
In a kind of additional modification, described at least one particulate receiving chamber is configured on the tooth root of external gear.
In a kind of additional mode of execution, be configured with each particulate receiving chamber at least 30%, 50%, 80% or 90% of the tooth root of described external gear.
Suitable is that described at least one particulate receiving chamber is taper.The particulate that is present in the particulate receiving chamber can more easily be rinsed away thus.
In a kind of additional design proposal, the size of described at least one particulate receiving chamber outside described or the direction of the center of gravity of internal gear increase.In order to flush out particulate from the particulate receiving chamber, the end at the place, working room of particulate receiving chamber has very large cross-section area thus, thus thus facilitation the flushing of particulate.
Suitable is that internal gear pump is constructed to have the internal gear pump of integrated motor.Internal gear pump with integrated motor has little and compact structure thus.
In a kind of additional design proposal, motor has stator and rotor and external gear and consists of by rotor.
Especially, external gear is provided with permanent magnet, so that motor is permanent magnet (excitation) motor.
In a kind of additional mode of execution, stator consists of with one heart around rotor.
In another embodiment, stator has as magnet spool.
In another kind of design proposal, rotor configuration is in stator interior.
In particular, rotor does not have permanent magnet, but has rotor tooth and motor is reluctance motor.
In another kind of design proposal, rotor is made by the material that is different from outer sections on the interior zone on the external toothing and/or is had a structure that is different from outer sections.Rotor withstands high mechanical load at the interior zone with external toothing, because external toothing is coupled in the ring gear of internal gear.Externally on the section, rotor is for example made by soft magnetic material without undergoing such mechanical load and for the functional requirement that only need satisfy exciting motor of exciting motor.
In a kind of additional mode of execution, interior zone at least in part, especially fully is made of sleeve and outer sections is comprised of a plurality of sheet metals that are insulated the device encirclement.Sheet metal is made by the iron as soft magnetic material.Need to the isolation layer of sheet metal structure around sheet metal, externally do not form eddy current on the section thus, eddy current can reduce the functional of exciting motor.On sleeve, consist of external toothing at this with high mechanical endurance.
In a kind of modification, rotor is made by sintered steel at least in part.
Aptly, the outer sections of rotor at least in part, especially fully made by sintered steel.
In another embodiment, rotor has axial dead slot.In the exciting motor as the integrated electric motivation, for functional as external gear of rotor, rotor needs rotor tooth.
In a kind of additional modification, internal gear is supported prejudicially.
In another kind of design proposal, stator has as magnet spool.
According to ejecting system of the present invention, be used for injecting fuel into the firing chamber of internal-combustion engine or be used for that treatment media, for example aqueous solution of urea are ejected into the outlet pipe of internal-combustion engine again with waste gas in particular for the ejecting system of Motor Vehicle; this ejecting system has for delivery of fuel or the waste gas pump for the treatment of media again; wherein, this pump is constructed to the internal gear pump described in this rights protection application.
In another kind of modification, internal gear pump comprises that for fluid enters opening and a discharge aperture, and they are passed in the working room.
Description of drawings
Describe with reference to the accompanying drawings embodiments of the invention in detail.It illustrates:
Fig. 1 illustrates the cross section of internal gear pump;
Fig. 2 illustrates the details cross section according to the internal gear of the internal gear pump of Fig. 1 and external gear;
Fig. 3 illustrates the longitudinal profile that has for the simplification of the internal gear pump of the bearing device of rotor;
Fig. 4 illustrates the view of strong simplification of the first embodiment's ejecting system;
Fig. 5 illustrates the view of strong simplification of the second embodiment's ejecting system; With
Fig. 6 illustrates the view of Motor Vehicle.
Embodiment
The first embodiment with internal gear pump 1 of integrated motor 2 shown in Figure 1.Internal gear pump 1 is used for carrying again treatment media of fluid, for example fuel or waste gas at ejecting system 3.
Internal gear pump 1 has one with internal gear 5 and the external gear 8 with external toothing 9 of ring gear 6.The tooth 7 of ring gear 6 is coupled in the tooth 10 of external toothing 8 at this.Between internal gear 5 and external gear 8, consist of the working room 32 for delivery of medium.External gear 8 is configured on the rotor 12 of motor 2 at this.Rotor 12 comprises an interior zone 13 at this, this interior zone is configured to sleeve 15, and at sleeve 15 structure external gear 8 or external toothings 9, wherein, sleeve 15 and external toothing 9 hold out against high mechanical load, because the tooth 10 of the tooth 7 of ring gear 6 and external toothing 9 cooperatively interacts.Therefore preferred sleeve 15 is formed from steel.The outer sections 14 of rotor 12 is set with one heart around the interior zone 13 of rotor 12.Outer sections 14 has stack of laminations for the dead slot of permanent magnet 31 at this by being insulated sheet metal 16(that the device (not shown) surrounds) make.The figure plane that sheet metal 16 is parallel to Fig. 1 is directed, so that the sectional drawing owing to Fig. 1 only can be seen a sheet metal 16 in Fig. 1.Externally be provided with permanent magnet 31 in the section 14 at this.In order externally not consist of larger eddy current in the section 14, the layer structure with outer sections 14 of sheet metal 16 needs.This is because electric insulation arrangement on sheet metal 16 outsides but feasible.
Internal gear 4 and external gear 8 are supported dividually, and wherein, internal gear 5 is supported prejudicially.
Stator 11 consists of with one heart around rotor 12.Stator 11 has stator tooth 21 at this, around stator tooth coil 20 is set.Coil 20 with stator tooth 21 forms electromagnet 34 thus.Integrated motor 2 is motor 2 of permanent magnet excitation.
The longitudinal profile of the simplification of the internal gear pump 1 of the motor 2 with integrated permanent magnet excitation shown in Figure 3.Rotor 12 is arranged on stator 11 inside at this.Consist of an axle 30 at rotor 12, this axle is supported by the bearing device 19 as the sliding bearing device.Internal gear 5 is supported by the bearing device of a unshowned off-centre.
Outer gear 8 is on each tooth root 33, namely have particulate receiving chamber 17(Fig. 1 and 2 between the tooth 10 at external gear 8).In 8 engagements of internal gear 5 and external gear or when cooperatively interacting, the contact of external gear 8 on internal gear 5 do not appearring on the tooth root 33.Particulate receiving chamber 17 is used for receiving particulate, dirt or the nano sized particles that may contain at fluid to be conveyed, and these particulates do not stop cooperatively interacting of internal gear 5 and external gear 8 thus.Particulate may cause the obstruction of internal gear 5 and external gear 8, thus so that internal gear pump 1 fed sheet of a media again.If because fluid has particulate, particulate arrives in the working room 32 during sucking fluid, and particulate or granule are owing to effectively centripetal force or centripetal acceleration move in the particulate receiving chamber 17 so.Thus can be so that particulate can not block interior and external gear 5,8.Next particulate can on the pressure side be rinsed out from particulate receiving chamber 17 again.Because the geometrical shape of the taper of particulate receiving chamber 17, the size of particulate receiving chamber 17 or cross-section area increase towards the center of gravity direction of external gear 8, thereby particulate can easily be rinsed out from particulate receiving chamber 17.
The view of the strong signal of ejecting system 3 shown in Figure 4.Ejecting system 3 be used for spraying waste gas again treatment media, for example aqueous solution of urea to the outlet pipe 24 of the internal-combustion engine 22 of Motor Vehicle 4.Internal gear pump 1 this from storage vessel 25 carry waste gas again treatment media by be used for waste gas again treatment media pipeline 29 with waste gas again treatment media be input to outlet pipe 24.Be used for the transmission power of control internal gear pump 1 or be used for control be used for waste gas again treatment media to be ejected into other device of injection valve of outlet pipe 24 not shown at Fig. 3.
The ejecting system 3 of the firing chamber 23 of the internal-combustion engine 22 for injecting fuel into Motor Vehicle 4 shown in Figure 5.Internal gear pump 1 with motor 2 of integrated permanent magnet excitation is carried fuel by fuel conduit 28 arrival high-pressure service pumps 35 from fuel tank 26 at this.High-pressure service pump 35 is transported to fuel in high pressure-rail 27.Fuel is injected into the firing chamber 22 from high pressure-rail 27.Required injection unit is not shown in Fig. 5 for this reason.
Different embodiments' details can make up mutually, as long as no mentioning on the contrary.
Observe generally, have remarkable advantage according to internal gear pump 1 of the present invention with according to ejecting system 3 of the present invention.Internal gear pump 1 with motor 2 is in operation and works reliably, because the particulate that may contain in fluid to be conveyed can not block internal gear 5 and external gear 8 owing to particulate receiving chamber 17.

Claims (12)

  1. For delivery of the internal gear pump (1) of fluid, in particular for the internal gear pump of Motor Vehicle (4), comprising:
    Internal gear (5) with ring gear (6);
    External gear (8) with external toothing (9);
    Wherein, the tooth (7,10) of described internal gear (5) and described external gear (8) cooperatively interacts;
    The working room (32) that between described internal gear (5) and described external gear (8), consists of;
    It is characterized in that described external gear (8) is provided with at least one and is used for reception from the particulate receiving chamber (17) of the particulate of fluid.
  2. 2. according to claim 1 internal gear pump is characterized in that described external gear (8) is provided with a plurality of particulate receiving chambers (17).
  3. 3. according to claim 1 and 2 internal gear pump is characterized in that described at least one particulate receiving chamber (17) is configured on the tooth root (33) of described external gear (8).
  4. 4. according to the one or more internal gear pump in the above claim, it is characterized in that, be configured with each particulate receiving chamber (17) at least 30%, 50%, 80% or 90% of the tooth root (33) of described external gear (8).
  5. 5. according to the one or more internal gear pump in the above claim, it is characterized in that described at least one particulate receiving chamber (17) is taper.
  6. 6. according to the one or more internal gear pump in the above claim, it is characterized in that the size of described at least one particulate receiving chamber (17) increases in the direction of the center of gravity of described external gear (8) or internal gear (5).
  7. 7. according to the one or more internal gear pump in the above claim, it is characterized in that described internal gear pump (1) is constructed to have the internal gear pump (1) of integrated motor (2).
  8. 8. according to claim 7 internal gear pump is characterized in that, described motor (2) has a stator (11) and a rotor (12) and described external gear (8) and consists of by described rotor (12).
  9. 9. according to claim 8 internal gear pump is characterized in that described external gear (8) is provided with permanent magnet (31).
  10. 10. according to claim 8 or 9 internal gear pump, it is characterized in that described stator (11) consists of with one heart around described rotor (12).
  11. 11. the one or more internal gear pump in 10 is characterized in that described stator (11) has the coil (20) as electromagnet (34) according to claim 8.
  12. 12. ejecting system (3), in particular for the ejecting system of Motor Vehicle (4), this ejecting system is used for injecting fuel into the firing chamber (23) of internal-combustion engine (22) or is used for that treatment media, for example aqueous solution of urea are ejected into the outlet pipe (24) of internal-combustion engine (22) again with waste gas, this ejecting system has for delivery of fuel or the waste gas pump for the treatment of media (1) again
    It is characterized in that described pump (1) is constructed to according to the one or more internal gear pump (1) in the above claim.
CN2011800122944A 2010-03-04 2011-01-25 Internal gear pump Pending CN103026067A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010002585.2 2010-03-04
DE102010002585A DE102010002585A1 (en) 2010-03-04 2010-03-04 Internal gear pump
PCT/EP2011/050955 WO2011107307A2 (en) 2010-03-04 2011-01-25 Internal gear pump

Publications (1)

Publication Number Publication Date
CN103026067A true CN103026067A (en) 2013-04-03

Family

ID=44502725

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011800122944A Pending CN103026067A (en) 2010-03-04 2011-01-25 Internal gear pump

Country Status (4)

Country Link
EP (1) EP2542782A2 (en)
CN (1) CN103026067A (en)
DE (1) DE102010002585A1 (en)
WO (1) WO2011107307A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011086429A1 (en) * 2011-11-16 2013-05-16 Robert Bosch Gmbh Internal gear pump
CN103967780B (en) * 2014-04-11 2016-08-17 西安交通大学 A kind of switch magnetic flow motor-driven duplex three gear internal messing compound electric pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219276A (en) * 1991-02-27 1993-06-15 Fresenius Ag Pump, in particular an enclosed medical pump
US20040037726A1 (en) * 2002-06-04 2004-02-26 Sabine Burhenne G-rotor pump
US20060039815A1 (en) * 2004-08-18 2006-02-23 Allan Chertok Fluid displacement pump
CN101137845A (en) * 2005-06-30 2008-03-05 株式会社日立制作所 Internal gear type pump with built-in motor and electronic device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
JPS63212786A (en) * 1987-02-26 1988-09-05 Sumitomo Electric Ind Ltd Pump rotor
DE4200883C1 (en) * 1992-01-15 1993-04-15 Siegfried A. Dipl.-Ing. 7960 Aulendorf De Eisenmann
DE29913367U1 (en) * 1999-07-30 1999-12-09 Pumpenfabrik Ernst Scherzinger GmbH & Co. KG, 78120 Furtwangen Internal gear pump, the ring gear of which is the inside of a rotor of an electric motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219276A (en) * 1991-02-27 1993-06-15 Fresenius Ag Pump, in particular an enclosed medical pump
US20040037726A1 (en) * 2002-06-04 2004-02-26 Sabine Burhenne G-rotor pump
US20060039815A1 (en) * 2004-08-18 2006-02-23 Allan Chertok Fluid displacement pump
CN101137845A (en) * 2005-06-30 2008-03-05 株式会社日立制作所 Internal gear type pump with built-in motor and electronic device

Also Published As

Publication number Publication date
WO2011107307A2 (en) 2011-09-09
EP2542782A2 (en) 2013-01-09
DE102010002585A1 (en) 2011-09-08
WO2011107307A3 (en) 2013-01-24

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Effective date of abandoning: 20170531