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EP2467605A1 - Unité de refoulement - Google Patents

Unité de refoulement

Info

Publication number
EP2467605A1
EP2467605A1 EP10734733A EP10734733A EP2467605A1 EP 2467605 A1 EP2467605 A1 EP 2467605A1 EP 10734733 A EP10734733 A EP 10734733A EP 10734733 A EP10734733 A EP 10734733A EP 2467605 A1 EP2467605 A1 EP 2467605A1
Authority
EP
European Patent Office
Prior art keywords
coating
delivery unit
pump chamber
unit according
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Withdrawn
Application number
EP10734733A
Other languages
German (de)
English (en)
Inventor
Jan Pawlowski
Roland Seidel
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 EP2467605A1 publication Critical patent/EP2467605A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • 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
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0466—Nickel
    • 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
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0804—Non-oxide ceramics
    • F05C2203/0813—Carbides
    • F05C2203/0817—Carbides of silicon
    • 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]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/514—Porosity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/516—Surface roughness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/611—Coating

Definitions

  • the invention is based on a delivery unit according to the preamble of the main claim.
  • Pump chamber is provided with an anodic oxidation coating to a
  • the main claim has the advantage that the wear and corrosion protection is improved by a nickel coating is used instead of the anodic oxidation coating.
  • the nickel coating is nonporous and therefore impervious to fuels.
  • the coating has a nickel content of 80 to 100 weight percent.
  • the nickel coating additionally contains phosphorus, since in this way the hardness of the coating is optimally adjustable. It has been found that a coating with a phosphorus content of 3 to 15 weight percent has particularly good properties.
  • the coating has, for example, a layer thickness of 5 to 30 micrometers.
  • polytetrafluoroethylene PTFE
  • silicon carbide SiC
  • boron carbide boron carbide or diamond has proved advantageous as a wear-influencing substance.
  • a pole housing is arranged, which includes an electric motor which is provided for driving the rotor.
  • the drawing shows in section a simplified illustrated delivery unit, in which the invention could find application.
  • the delivery unit serves to convey liquid, for example fuel, from a storage container to a consumer, for example an internal combustion engine.
  • the delivery unit has a pump housing 1 with at least one input channel 2 and an output channel 3.
  • the input channel 2 of the delivery unit is connected for example via a suction line 4 to a reservoir 5, in which, for example, fuel is stored.
  • the output channel 3 is connected via a pressure line 8, for example with an internal combustion engine 9.
  • the pump housing 1 has a pump chamber 10 in which a rotor 11 can rotate in rotation about a pump axis 12.
  • the pump chamber 10 is bounded by two opposite in the direction of the pump axis 12 end walls 15,16 and in the radial direction with respect to the pump axis 12 of a peripheral wall 17.
  • the rotor 11 serves to promote fluid and builds a predetermined pressure downstream of the pump chamber 10.
  • the rotor 11 is designed as a turbine runner and is driven via a drive shaft 18 by an actuator 19, for example an electric motor.
  • the rotor 11 is mounted on the drive shaft 18, for example, such that it is axially movable between the end walls 15,16.
  • the rotor 11 has feed vanes 22, which cooperate with at least one delivery channel 23 of the pump chamber 10 in a known manner, so that adjusts a delivery with pressure build-up. According to the
  • the rotor 11 at both end faces a ring of conveying blades 22, which are formed closed radially outward.
  • the conveyor blades 22 may also be provided only on one side and / or be designed to be open radially outward.
  • Each ring of conveying blades 22 is associated with a delivery channel 23 in the pump chamber 10. According to the
  • both end walls 15,16 each have a delivery channel 23 is provided, which is arranged in each case at approximately the same radial distance from the pump shaft 12 as the associated ring of conveying blades 22.
  • the end wall 15 is for example on a lid 24 and both the end wall 16 as Also, the peripheral wall 17 are formed for example on an intermediate housing 25, wherein the two parts 24,25 include the pump chamber 10.
  • the lid 24 has the
  • the intermediate housing 25 also has a delivery channel 23, which via a pump chamber outlet 26 with the
  • Output channel 3 is fluidly connected.
  • a cylindrical pole housing 27 is arranged, which the actuator 19 - A - includes.
  • the pump chamber 10 forming parts are made of aluminum or another metal.
  • the pump chamber 10 is completely or partially provided with a coating 30.
  • the coating contains nickel and is produced by galvanic or chemical nickel plating.
  • the nickel plating achieves greater hardness and wear resistance as well as greater corrosion resistance compared with the anodized material used hitherto.
  • a freedom from pores is achieved with the nickel plating.
  • the coating 30 of the invention has a nickel content of 80 to 100 weight percent.
  • the nickel coating 30 according to the invention is nonporous and thus impermeable to fuels.
  • the roughness of the nickel coating 30 is in contrast to the anodic
  • Oxidation coating substantially independent of the initial roughness of the components to be coated 24,25. As a result, very small surface roughnesses can be achieved with low layer thicknesses, as a result of which good wear protection is achieved.
  • Nickel coating 30 also has a conformal layer course and shows no so-called galvanic edge defects, in which the layer thickness is reduced at the edges.
  • the coating may be admixed with phosphorus, it being possible for the phosphorus content to be, for example, 3 to 15 percent by weight.
  • the layer thickness of the coating 30 is, for example, 5 to 30 micrometers.
  • at least one coating 30 may also be used
  • wear-influencing substance for example polytetrafluoroethylene (PTFE), silicon carbide (SiC), boron carbide or diamond.
  • PTFE polytetrafluoroethylene
  • SiC silicon carbide
  • boron carbide boron carbide or diamond.
  • Wear-influencing substance is for example 8 to 35 weight percent.
  • the hardness of the coating 30 can be further increased, thereby further increasing the resistance to wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

On connaît déjà des unités de refoulement comprenant une chambre de pompe constituée de matériau aluminium et un rotor disposé dans la chambre de pompe, la chambre de pompe étant pourvue d'un revêtement d'oxydation anodique pour obtenir une protection contre l'usure et la corrosion notamment par rapport aux carburants. Dans l'unité de refoulement selon l'invention, la protection contre l'usure et la corrosion dans la chambre de pompe est améliorée. Selon l'invention, le revêtement (30) contient du nickel.
EP10734733A 2009-08-19 2010-07-16 Unité de refoulement Withdrawn EP2467605A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028646A DE102009028646A1 (de) 2009-08-19 2009-08-19 Förderaggregat
PCT/EP2010/060303 WO2011020663A1 (fr) 2009-08-19 2010-07-16 Unité de refoulement

Publications (1)

Publication Number Publication Date
EP2467605A1 true EP2467605A1 (fr) 2012-06-27

Family

ID=42668131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10734733A Withdrawn EP2467605A1 (fr) 2009-08-19 2010-07-16 Unité de refoulement

Country Status (3)

Country Link
EP (1) EP2467605A1 (fr)
DE (1) DE102009028646A1 (fr)
WO (1) WO2011020663A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013108482A1 (de) * 2013-08-06 2015-02-12 Pfeiffer Vacuum Gmbh Vakuumpumpstufe
DE102014216595A1 (de) 2014-08-21 2016-02-25 Robert Bosch Gmbh Förderaggregat
DE102014012738B4 (de) * 2014-08-27 2023-03-30 Rampf Formen Gmbh Form, Rüttelbare Unterlage und Ziehblech mit beschichteten Oberflächen, Verfahren zu deren Herstellung sowie Verwendung der Beschichtungen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003056187A1 (fr) * 2001-12-22 2003-07-10 Leybold Vakuum Gmbh Procede d'enduction d'objets
CN201097442Y (zh) * 2007-11-22 2008-08-06 刘新广 蜗形磁力泵
CN201218212Y (zh) * 2008-07-16 2009-04-08 大港油田集团中成机械制造有限公司 电动潜油离心泵

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090319A (en) * 1961-06-30 1963-05-21 Helmick Foundry Machines Compa Pump liner
DE4123089C2 (de) * 1991-07-12 1998-02-19 Mannesmann Vdo Ag Kraftstoff-Förderaggregat
US6213744B1 (en) * 1999-11-16 2001-04-10 Ewan Choroszylow Phased rotary displacement device
JP2002168188A (ja) * 2000-09-20 2002-06-14 Mitsuba Corp 再生式ポンプ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003056187A1 (fr) * 2001-12-22 2003-07-10 Leybold Vakuum Gmbh Procede d'enduction d'objets
CN201097442Y (zh) * 2007-11-22 2008-08-06 刘新广 蜗形磁力泵
CN201218212Y (zh) * 2008-07-16 2009-04-08 大港油田集团中成机械制造有限公司 电动潜油离心泵

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011020663A1 *

Also Published As

Publication number Publication date
DE102009028646A1 (de) 2011-02-24
WO2011020663A1 (fr) 2011-02-24

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