EP2619886A2 - Pompe comprenant un moteur électrique - Google Patents

Pompe comprenant un moteur électrique

Info

Publication number
EP2619886A2
EP2619886A2 EP11749428.6A EP11749428A EP2619886A2 EP 2619886 A2 EP2619886 A2 EP 2619886A2 EP 11749428 A EP11749428 A EP 11749428A EP 2619886 A2 EP2619886 A2 EP 2619886A2
Authority
EP
European Patent Office
Prior art keywords
pump
electric motor
housing
sealing sheath
stator
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Withdrawn
Application number
EP11749428.6A
Other languages
German (de)
English (en)
Inventor
Josef Frank
Alexander Fuchs
Ralf Rainer
Robert Pichler
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 EP2619886A2 publication Critical patent/EP2619886A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to a pump with electric motor according to the preamble of claim 1, a method for producing a pump with electric motor according to the preamble of claim 1 1 and a
  • fuel pumps are used to deliver fuel to an internal combustion engine.
  • the electric motor of the pump comprises a stator and a rotor with
  • the electric motor and the pump is arranged within a housing.
  • the housing thus creates a space, in particular a working space in which there is the fluid to be pumped.
  • Outside the housing materials may be arranged, for example
  • Liquids such as salt water, whose penetration is to be prevented within the housing of the pump, because they can cause damage to the stator by corrosion, for example. Also solids, such as
  • Dust or minute particles can cause damage to both the electric motor and the pump as it enters the enclosure enclosed by the housing. For this reason, it is necessary to seal the pump with the electric motor permanently fluid-tight, on the one hand to prevent leakage of the fluid to be pumped, for example, fuel outside the housing and on the other hand harmful substances or media from penetrating into the housing enclosed interior with the pump and the electric motor to prevent.
  • Impeller with or without a sickle, and with an electric drive, which is formed by the ring gear is arranged inside a rotor of a brushless electric motor and the rotor adjacent to a stator, wherein the rotor containing the ring gear outside of a bearing or a
  • Sliding bearing is rotatably supported, wherein the stator is shielded and sealed relative to the rotor and the interior of the pump characterized in that the located between the stator and rotor bearings or bearings for liquid impermeable and is sealed at its two end faces each with a cover.
  • an electric motor in particular for a motor vehicle, for conveying a fluid, comprising an impeller with conveying elements, of which a rotational movement about a rotation axis is executable, an existing on the impeller working space, an electric motor with a stator and a rotor, wherein the stator comprises a soft magnetic core, in particular a laminated core, windings as electromagnets and electrical contact elements, a housing, wherein the impeller with the conveying elements and the electric motor are arranged within the housing and preferably the pump is integrated in the electric motor or vice versa in that the rotor is formed by the impeller, wherein the electrical contact elements are enclosed by a plug-in collar as a sealing sleeve and is sealed with at least one seal on the plug collar of the plug collar with respect to the housing.
  • the plug collar can be easily sealed with the electrical contact elements independent of the remaining seal of the housing.
  • the electrical contact elements on the plug collar are preferably only partially enclosed by the plug collar or the sealing sleeve, so that the Ends of the electrical contact elements protrude out of the plug collar and form an electrical interface or a plug for making electrical contact with the electrical contact elements.
  • the stator is complementary to the stator
  • Plug-in collar at least partially, in particular completely, enclosed by a sealing sheath and / or the sealing sheath is as an encapsulation or
  • the sealing sheath is applied to the stator by means of injection molding during an encapsulation or by shrinking, for example as a shrink tube or a shrinkage structure.
  • the plug collar is designed as a plastic extrusion.
  • the stator is enclosed by the sealing sleeve or an encapsulation and thereby the stator, that is to say at least one component of the stator, for example a soft magnetic core and / or windings and / or electrical
  • the sealing sheath and thereby at least one component of the stator is sealed fluid-tight with respect to the fluids surrounding the stator.
  • the fluid to be delivered for example fuel
  • non-damaging media or substances for example salt water
  • Combustion engine is the electric feed pump as a pump with
  • the sealing envelope consists at least partially, in particular completely, of a, preferably thermoplastic
  • Plastic and / or the plug collar is arranged in a recess or opening of the housing, in particular of the housing pot.
  • the plug collar is thus positively connected to the housing and at high
  • the plug collar can be supported on the housing, so that essentially no deformations occur at the seal and a reliable and secure sealing of the plug collar is ensured with respect to the housing.
  • the sealing sleeve has at least one functional geometry, for.
  • a groove or a recess for receiving a seal and preferably, the groove and / or the recess has a greater distance from the axis of rotation than the windings and / or the seal is integrated in the sealing sheath.
  • the seal When integrating the seal, z.
  • the seal As a sealing ring, the seal is not inserted into the functional geometry and positively connected to the sealing sheath, but integrally connected to the sealing sheath, z. B. in which the seal is encapsulated by the sealing sheath or is or is glued to the sealing sheath.
  • the housing is completely sealed with the at least one seal, in particular a sealing ring on the sealing sheath or the seal on the sealing sheath is formed only on the plug collar and between the housing pot and a housing cover, a further seal is arranged.
  • the seal is preferably formed as at least one sealing ring, so that the sealing ring can completely seal the housing.
  • two sealing rings opposite to the sealing cover may be present.
  • permanent magnets are integrated in the impeller, so that the rotor is formed by the impeller.
  • the conveying elements are blades or teeth of a gear.
  • the pump is a gear pump, in particular internal gear pump.
  • the soft magnetic core and / or the windings are at least partially, in particular completely, enclosed by the sealing sleeve and the electrical
  • Contact elements are partially enclosed by the sealing sheath as a plug-in collar, so that a part of the contact elements outside the sealing sheath is arranged as a plug-in collar.
  • stator in particular the soft magnetic core, the windings and partly the electrical
  • Method according to the invention for producing a pump, in particular a pump with an electric motor described in this patent application, for conveying a fluid comprising the steps of: providing an impeller with conveying elements, providing a housing, providing an electric motor with a stator and a motor Rotor for driving the pump, wherein the impeller is arranged with the conveying elements and the electric motor within the housing, mounting the impeller with
  • Plug collar are enclosed as a sealing sheath and sealed with a seal on the plug collar of the plug collar with respect to the housing.
  • the stator in addition to the plug collar at least partially, in particular completely, enclosed by the sealing sheath and / or the stator is enclosed by injection molding or shrinking with the sealing sheath.
  • the sealing sheath is produced with a, preferably thermoplastic, plastic and / or the stator is fluid-tight, in particular completely, enclosed by the sealing sheath.
  • At least one seal in particular a sealing ring, arranged on the sealing sheath and with the at least one seal on the sealing sheath, the housing is completely sealed, even on the plug collar, or on the sealing sheath, the seal is arranged only on the plug collar and between the housing pot and the housing cover, a further seal is arranged to seal the rest of the housing. With the further seal thus the housing is sealed outside the Aussparrung or opening of the housing.
  • a soft magnetic core and windings are completely enclosed by the sealing sleeve as electromagnets of the stator and the electrical contact elements are partially enclosed by the sealing sleeve.
  • Inventive high-pressure injection system for an internal combustion engine in particular for a motor vehicle, comprising a high-pressure pump, a high-pressure rail, an electric feed pump for conveying a fuel from a fuel tank to the high-pressure pump, wherein the electric
  • Pre-feed pump is designed as a pump described in this patent application.
  • the impeller forms the rotor and / or on or in the impeller, the permanent magnets are arranged or integrated, d. H.
  • the pump is integrated in the electric motor or vice versa.
  • the pump is integrated in the electric motor or vice versa, preferably, the pump and the electric motor are inseparable units.
  • the rotor is partially made of sheet metal plates.
  • the metal plates are surrounded by an insulating layer. The insulation around the metal plates and the formation of the rest of the rotor made of sheet metal plates has the task that no or only very small eddy currents occur in the rotor.
  • the rotor consists at least partially, in particular completely, of sintered steel.
  • the at least one seal is elastic, z. B. as an elastomer, and / or consists of plastic.
  • the pump with electric motor comprises a
  • Inlet opening and an outlet opening for the fluid which open into the working space.
  • the pump is an external gear pump or a centrifugal pump or a vane cell pump.
  • the pump with, preferably integrated, electric motor comprises a, preferably electronic, control unit for controlling the energization of the electromagnets.
  • the pump is a turbomachine.
  • Suitably consists of the housing of the prefeed pump and / or the housing of the high-pressure pump and / or the inner and / or outer gear at least partially, in particular completely, made of metal, for. As steel or aluminum.
  • the delivery rate of the electrical feed pump can be controlled and / or regulated.
  • FIG. 1 is a highly schematic view of a high-pressure injection system
  • FIG. 2 is a perspective view of a prefeed pump without housing and a stator without sealing sheath
  • FIG. 3 is an exploded view of the feed pump with the housing in a first embodiment
  • Fig. 4 shows a section of the stator with sealing sheath in a first
  • Fig. 6 is a first perspective view of the stator with sealing sheath
  • Fig. 7 is a second perspective view of the stator with sealing sheath
  • Fig. 8 is a perspective view of the stator with sealing sheath
  • FIG. 9 is a view of a motor vehicle.
  • FIG. 1 shows a pump arrangement 1 of a high-pressure injection system 2.
  • An electric prefeed pump 3 delivers from a fuel tank 41 through a fuel line 35 fuel. Subsequently, the fuel is conveyed from the electric prefeed pump 3 to a high-pressure pump 7.
  • the high-pressure pump 7 is of an internal combustion engine 39 by means of a
  • the electric prefeed pump 3 has an electric motor 4 and a pump 5 (FIGS. 2 and 3).
  • the electric motor 4 of the pump 5 is integrated into the pump 5 and further, the electric prefeed pump 3 at the
  • High pressure pump 7 arranged directly.
  • the high-pressure pump 7 delivers fuel under high pressure, for example, a pressure of 1000, 3000 or
  • the porting openings 28 (FIG. 2) of the electric prefeed pump 3 are connected to the high-pressure pump 7 without an external connection.
  • the mounting position of the electric prefeed pump 3 to the high-pressure pump 7 is chosen to the effect that by short
  • Pre-feed pump 3 a fuel filter 38 is installed.
  • the fuel line 35 can be formed inexpensively from the fuel tank 41 to the electric prefeed pump 3 in an advantageous manner, since they are none
  • the electric motor 4 (FIGS. 2 and 3) of the electric prefeed pump 3 is operated with three-phase current or alternating current and can be controlled and / or regulated in power.
  • the three-phase current or alternating current for the electric motor 4 is from a power electronics, not shown, from a DC voltage network of a vehicle electrical system of a motor vehicle 40 for
  • the electric prefeed pump 3 is thus an electronically pumped prefeed pump 3rd
  • the electric prefeed pump 3 has a housing 8 with a housing pot 10 and a housing cover 9 (FIGS. 3 and 5). Within the housing 8 of the prefeed pump 3, the pump 5 as internal gear 6 and Gear pump 26 and the electric motor 4 is arranged.
  • the housing pot 10 is provided with a recess 57 (FIG. 5) or an opening 58 (FIG. 3).
  • the electric motor 4 has a stator 13 with windings 14 as electromagnets 15 and a soft iron core 45 as a soft magnetic core 32, which is formed as a laminated core 33.
  • the pump 5 is as
  • Internal gear pump 6 with an internal gear 22 with an internal gear 23 and an external gear 24 with an external gear 25 positioned.
  • the inner and outer gear 22, 24 thus represents a gear 20 and an impeller 18 and the inner and outer toothed ring 23, 25 have teeth 21 as conveying elements 19. Between the inner and outer gear 22, 24 forms a working space
  • Electromagnets 15 of the stator 13 are alternately energized, so that due to the resulting magnetic field to the electromagnet 15 of the stator 13
  • Rotor 16 and the external gear 24 is set in a rotational movement about an axis of rotation 27.
  • the housing cover 9 serves as a bearing 1 1 or thrust bearing 1 1 or slide bearing 1 1 for the inner or outer gear 22, 24. Further, in the housing cover 9 a
  • the fluid to be delivered namely fuel
  • the pressure port opening 30 the fuel flows out of the prefeed pump 3 again.
  • the housing pot 9 and the housing cover 10 each have three
  • a first embodiment of the stator 13 is shown, which is surrounded by a sealing sheath 31 as encapsulation substantially completely. Otherwise, the electric prefeed pump 3 corresponds to the structure in Fig. 2.
  • the stator 13 is cut only half in the illustration of FIG. 4.
  • the sealing envelope 31 constitutes an encapsulation 31 or an injection 31 and is produced by means of injection molding in an injection molding tool and in this connection is connected to the stator 13 in a materially bonded manner.
  • the electrical contact element 34 as a further component of the stator 13 comprises the contact pin 48 and the contact line 49. At the stator 13, a plurality of contact pins 48 are provided with associated contact lines 49, so that the stator 13 so that several electrical
  • Contact elements 34 has. In Fig. 4, only one electrical contact element 34 is shown. By means of the electrical contact elements 34, the windings 14 of the stator 13 are energized. The contact pins 48 are partially not enclosed by the sealing sleeve 31 made of thermoplastic material, so that at this, not enclosed by the sealing sleeve 31 part of the electrical
  • Contact elements 34 can be brought into mechanical and electrical connection with mating contact elements, not shown in the
  • Sealing sheath 31 also has a plug-in collar 55.
  • the plug-in collar 55 (FIGS. 3 and 4) is in the opening 58 as a bore with an arbitrary cross-section of the after the assembly of the electric prefeed pump 3
  • the plug-in collar 55 is further provided with a functional geometry 50.
  • the functional geometry 50 can be produced during injection molding simply based on the shape of the injection molding tool.
  • only the plug collar 55 has a groove 51 as a functional geometry 50 for receiving a respective sealing ring 54.
  • FIGS. 5 to 7 show a second exemplary embodiment of the housing 8 and of the stator 13. Otherwise, the electric prefeed pump 3 corresponds to the structure in FIG. 2. In the following, essentially only the differences from the first exemplary embodiment according to FIGS. 3 and 4 will be explained
  • stator 13 is only partially of the injection molding
  • the plug collar 55 is arranged in a recess 57 of the housing pot 10. Here are at the
  • the sealing rings 54 lie in each case on the housing pot 10 and the housing cover 9 and thus seal the housing 8 completely.
  • the functional geometries 50, namely the grooves 51, in this case has to the rotation axis 27 a larger one
  • the grooves 51 are thereby arranged on an outer diameter of the stator 13 and the sealing sleeve 31, so that thereby no additional radial space between the windings 14 and the outer gear 24 is required for the grooves 51.
  • the sealing sheath 31 is provided with a seal 53 in a groove 51, wherein due to the geometry of the seal 53, the housing 8 completely, also on the
  • Plug collar 55 can be sealed.
  • the seal 53 revolves around the
  • Plug collar 55 complete and due to the arrangement of the seal 53 at a support area as a completely circumferential sealing line between the housing pot 9 and the housing cover 10 and the rest of the housing 8 with the seal 53 can be completely sealed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Abstract

La présente invention concerne une pompe comprenant un moteur électrique, destinée notamment à un véhicule à moteur et servant à refouler un liquide, ladite pompe comprenant : une roue mobile dotée d'éléments de refoulement, qui peut effectuer un mouvement de rotation autour d'un axe de rotation; une chambre de travail se trouvant au niveau de la roue mobile; un moteur électrique comprenant un stator (13) et un rotor, le stator (13) présentant un noyau magnétique doux (32), notamment un empilement de tôles (33), des enroulements (14) en tant qu'électro-aimants (15) et des éléments de contact électrique (34); un boîtier, la roue mobile dotée des éléments de refoulement et le moteur électrique se trouvant à l'intérieur du boîtier, et de préférence la pompe étant intégrée au moteur électrique, ou inversement, le rotor étant formé par la roue mobile, les éléments de contact électrique (34) étant entourés d'un collet d'enfichage (55) en tant qu'enveloppe d'étanchéité (31) et le collet d'enfichage (55) étant rendu étanche par rapport au boîtier au moyen d'au moins un joint (53) disposé sur ledit collet d'enfichage (55).
EP11749428.6A 2010-09-23 2011-08-31 Pompe comprenant un moteur électrique Withdrawn EP2619886A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010041240A DE102010041240A1 (de) 2010-09-23 2010-09-23 Pumpe mit Elektromotor
PCT/EP2011/065008 WO2012038214A2 (fr) 2010-09-23 2011-08-31 Pompe comprenant un moteur électrique

Publications (1)

Publication Number Publication Date
EP2619886A2 true EP2619886A2 (fr) 2013-07-31

Family

ID=44532867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11749428.6A Withdrawn EP2619886A2 (fr) 2010-09-23 2011-08-31 Pompe comprenant un moteur électrique

Country Status (4)

Country Link
EP (1) EP2619886A2 (fr)
CN (1) CN105960749B (fr)
DE (1) DE102010041240A1 (fr)
WO (1) WO2012038214A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015526520A (ja) * 2012-08-31 2015-09-10 プリンシピア バイオファーマ インコーポレイテッド Ｉｔｋ阻害剤としてのベンズイミダゾール誘導体
DE102017104837A1 (de) * 2017-03-08 2018-09-13 HELLA GmbH & Co. KGaA Pumpe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566545A2 (fr) * 2004-02-23 2005-08-24 Aisin Seiki Kabushiki Kaisha Pompe électrique à engrenage intérieur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314453A1 (de) * 1993-05-03 1994-11-10 Vdo Schindling Kraftstofförderaggregat
DE29913367U1 (de) 1999-07-30 1999-12-09 Pumpenfabrik Ernst Scherzinger GmbH & Co. KG, 78120 Furtwangen Innen-Zahnradpumpe, deren Hohlrad das Innere eines Rotors eines Elektromotors ist
JP2001304166A (ja) * 2000-04-27 2001-10-31 Aisan Ind Co Ltd 磁気結合ポンプ
JP2005312086A (ja) * 2002-10-31 2005-11-04 Nsk Ltd 電動パワーステアリング装置
EP1560314A1 (fr) * 2002-10-31 2005-08-03 NSK Ltd. Dispositif de direction assistee electrique
JP4237731B2 (ja) * 2005-05-31 2009-03-11 株式会社日立製作所 モータ一体型内接歯車式ポンプ及びその製造方法並びに電子機器

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566545A2 (fr) * 2004-02-23 2005-08-24 Aisin Seiki Kabushiki Kaisha Pompe électrique à engrenage intérieur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012038214A2 *

Also Published As

Publication number Publication date
CN105960749A (zh) 2016-09-21
CN105960749B (zh) 2019-08-16
DE102010041240A1 (de) 2012-03-29
WO2012038214A3 (fr) 2012-05-18
WO2012038214A2 (fr) 2012-03-29

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