EP1616099A1 - Rotor en metal fritte d'une pompe a piston rotatif - Google Patents

Rotor en metal fritte d'une pompe a piston rotatif

Info

Publication number
EP1616099A1
EP1616099A1 EP04738690A EP04738690A EP1616099A1 EP 1616099 A1 EP1616099 A1 EP 1616099A1 EP 04738690 A EP04738690 A EP 04738690A EP 04738690 A EP04738690 A EP 04738690A EP 1616099 A1 EP1616099 A1 EP 1616099A1
Authority
EP
European Patent Office
Prior art keywords
rotor
individual webs
rotor according
sintered
connecting claw
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.)
Granted
Application number
EP04738690A
Other languages
German (de)
English (en)
Other versions
EP1616099B1 (fr
Inventor
Peter Grahle
Peter Haldemann
Walter NÜNLIST
Heinz Rhyn
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.)
Sinterwerke Grenchen AG
Pierburg GmbH
Original Assignee
Mahle Motorkomponenten Schweiz AG
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 Mahle Motorkomponenten Schweiz AG filed Critical Mahle Motorkomponenten Schweiz AG
Publication of EP1616099A1 publication Critical patent/EP1616099A1/fr
Application granted granted Critical
Publication of EP1616099B1 publication Critical patent/EP1616099B1/fr
Anticipated expiration legal-status Critical
Active 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • 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
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/22—Manufacture essentially without removing material by sintering
    • 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
    • F04C2240/20—Rotors

Definitions

  • the invention relates to a rotor made of sintered metal of a rotary piston pump according to the preamble of patent claim 1 and a method for producing this rotor.
  • Such a rotor is known for example from DE 197 03 499 AI. That rotor is made up of parts, namely a produced .. After a previous carburizing, the turned part is soldered to the sintered pot part via the copper ring. The copper of the copper ring diffuses during the heat treatment required for the soldering into the pore zones of the sintered component which are at risk of breakage and thereby guarantees the rotor sufficient break resistance in the area of the turned part.
  • the turned part made of steel forms the connection claw area of that rotor. The claw in this area, to which a coupling is attached, is designed to extend over the entire diameter of the soldered steel turned part.
  • the known rotor could, for example, be produced by a sintering process known from EP 0 822 876 B1.
  • the reason for the above Flat assembly of several, that is to say at least two, prefabricated output parts consists in the fact that the coupling area in a one-piece sintered rotor has not hitherto been able to be produced with sufficient strength for continuous operation of the rotor.
  • the invention is concerned with the overall problem, a generic rotor of sintered material particularly efficient and inexpensively and with sufficient fatigue strength 'speed in particular, its coupling region.
  • the shape of the connecting claw section of the rotor according to the invention results in an advantageous embodiment of a coupling element to be attached.
  • the last subclaim shows a manufacturing method with a sintering press tool that is particularly advantageous for the implementation.
  • the invention is based on the general idea of giving the rotor a shape, in particular in the connecting claw section, which allows it to be pressed by a press tool. to be able to manufacture tools with a series of individually pressable dies with sufficient sintering pressure for all functional areas.
  • By dividing the connecting claw section into two separate, diametrically spaced opposing individual webs it is possible to condense these individual webs by these respectively associated, separately acted upon sintering die stamp for the required in this area, material stability sufficient 'high. This is possible because the pressing pressure can only be applied to a small cross-sectional area, which means that an extremely high specific pressure can be achieved in these cross-sectional areas.
  • the strength of sintered steels can be increased by filling the pores with a low-melting metal (impregnating alloys), for example copper or copper alloys.
  • a low-melting metal impregnating alloys
  • the individual webs with transition regions in the adjacent rotor body are accordingly infiltrated with copper.
  • a copper layer is provided on the surfaces of those areas that are to be infiltrated with copper before the sinter-pressed base material is exposed to the required screening temperature. Copper applied in this way melts under the sintering heat and penetrates into the material lying below the coated surfaces, in particular due to the capillary action.
  • FIG. 1 shows a cross section through a sintered rotor
  • FIG. 2 shows a top view of the rotor according to FIG. 1
  • FIG. 3 shows a view of the rotor according to FIG. 1 from below
  • FIG. 4 shows a front view of a coupling element that can be attached to the rotor
  • 5 shows a plan view of the coupling element according to FIG.
  • the rotor consists of a pot-shaped base body 1 and a cylindrical foot region protruding from the bottom thereof with a connecting claw section 2 adjoining it.
  • the connecting claw section 2 two diametrically opposed individual webs 3 project axially outward as connecting claws, which are of the same shape and size.
  • the individual webs 3 are edge profile hardened, this hardening can be generated inductively.
  • the edge-hardened area of the individual webs 2 can be cooled in a particularly rugged manner in order to be able to achieve the necessary material strength with a high degree of certainty.
  • the special feature of the invention consists in the shape of the connecting claw section 2 due to the individual webs 3 formed here and the possibility thereby given to be able to compress the material of these individual webs 3 "sufficiently high during the sintering production of the rotor.
  • This high compression is achieved by a sintering pressing tool , which is equipped with the crosspieces 3 that are assigned to the individual webs and can be operated separately, the inner areas of the rotor 1 that can be operated separately 3 are assigned the reference numerals 4, 4 '.
  • the sintering tool which has these two separate stamps 4, 4 ', consists of a total of seven stamps, each of which can be pressurized individually. Two of these stamps are the stamps 4, 4 'already mentioned above. The remaining stamps are assigned to rotor areas, which in FIG. 3 are 5, 5 '; 6, 6 'and 7 are designated.
  • the rotor is made of the following material:
  • the specific sintering pressure is such that a material density of at least 6.8 to 7.4 g / cm 3 is given in all areas of the rotor, but certainly in the area of the individual webs 3 of the connecting claw section.
  • the copper layers can be applied to the already sinter-pressed individual webs in a cap shape before they are subjected to the sintering heat process. This means that appropriately shaped caps, cones or pot-like structures are simply placed on the relevant material areas to be infiltrated with copper before the sintering process is carried out.
  • the thickness of the copper layers that is to say the wall thickness of the caps to be put on, can for example be determined experimentally in such a way that a complete penetration of the material areas to be treated is reliably ensured. In principle, the required amount of copper to be used can of course also be determined at least approximately correctly by calculation.
  • connection claw area 2 a coupling element 8 adapted to the connection form of this section can be attached.
  • This coupling element 8 comprises a coupling claw area 9, which is integrated in a longitudinal web 10 as a connecting element for a component to be connected.
  • This design of the coupling element 8 allows couplings of different lengths to be produced and used in a simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
EP04738690A 2003-06-30 2004-06-16 Rotor en metal fritte d'une pompe a piston rotatif Active EP1616099B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10329495 2003-06-30
PCT/DE2004/001239 WO2005001293A1 (fr) 2003-06-30 2004-06-16 Rotor en metal fritte d'une pompe a piston rotatif

Publications (2)

Publication Number Publication Date
EP1616099A1 true EP1616099A1 (fr) 2006-01-18
EP1616099B1 EP1616099B1 (fr) 2007-08-08

Family

ID=33546757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738690A Active EP1616099B1 (fr) 2003-06-30 2004-06-16 Rotor en metal fritte d'une pompe a piston rotatif

Country Status (9)

Country Link
US (1) US7458792B2 (fr)
EP (1) EP1616099B1 (fr)
JP (1) JP4838712B2 (fr)
KR (1) KR101108727B1 (fr)
CN (1) CN1759251B (fr)
AT (1) ATE369494T1 (fr)
BR (1) BRPI0407932B1 (fr)
DE (2) DE502004004579D1 (fr)
WO (1) WO2005001293A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2215364B1 (fr) * 2007-11-13 2015-07-08 Magna Powertrain Hückeswagen GmbH Matrice, rotor fritté et méthode de frittage
US9067859B2 (en) * 2008-07-03 2015-06-30 H R D Corporation High shear rotary fixed bed reactor
DE112009001966A5 (de) * 2008-09-05 2011-07-14 ixetic Hückeswagen GmbH, 42499 Rotor für eine Pumpe
EP2746532B1 (fr) 2012-12-19 2018-02-14 Pierburg Pump Technology GmbH Agencement de rotor pour une pompe à vide ainsi que la pompe à vide dotée d'un tel agencement de rotor

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US3726572A (en) * 1969-05-14 1973-04-10 Smiths Industries Ltd Gas-lubricated bearings
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JPS5349955Y2 (fr) * 1975-07-29 1978-11-30
JPS5219544A (en) * 1975-11-18 1977-02-14 Seiko Epson Corp Voltage compensation control system for the thermal printer
JPS5520259A (en) * 1978-07-28 1980-02-13 Ngk Spark Plug Co Production of high density sintered body
JPS60133229A (ja) * 1983-12-21 1985-07-16 Katsupa Shokuhin Kk 石油スト−ブ
JPS60133229U (ja) * 1984-02-16 1985-09-05 株式会社明電舎 軸継手
JPH01142287A (ja) * 1987-11-28 1989-06-05 Toshiba Corp ロータリーコンプレッサ用ブレード
DE4018509A1 (de) 1989-06-24 1991-01-10 Barmag Barmer Maschf Fluegelzellenpumpe
DE4020082C2 (de) 1989-07-07 1998-09-03 Barmag Barmer Maschf Flügelzellen-Vakuumpumpe
JPH0439330A (ja) * 1990-06-05 1992-02-10 Sumitomo Bakelite Co Ltd 溶剤可溶性ポリイミドシロキサンオリゴマー及びそれを含有する組成物
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Also Published As

Publication number Publication date
US20060165545A1 (en) 2006-07-27
JP2007506891A (ja) 2007-03-22
DE502004004579D1 (de) 2007-09-20
US7458792B2 (en) 2008-12-02
CN1759251A (zh) 2006-04-12
KR20060025521A (ko) 2006-03-21
JP4838712B2 (ja) 2011-12-14
ATE369494T1 (de) 2007-08-15
BRPI0407932B1 (pt) 2013-04-02
DE112004000025D2 (de) 2005-04-28
CN1759251B (zh) 2011-06-08
KR101108727B1 (ko) 2012-02-29
BRPI0407932A (pt) 2006-02-21
EP1616099B1 (fr) 2007-08-08
WO2005001293A1 (fr) 2005-01-06

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