EP1664540B1 - Machine a piston rotatif - Google Patents

Machine a piston rotatif Download PDF

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Publication number
EP1664540B1
EP1664540B1 EP04786754A EP04786754A EP1664540B1 EP 1664540 B1 EP1664540 B1 EP 1664540B1 EP 04786754 A EP04786754 A EP 04786754A EP 04786754 A EP04786754 A EP 04786754A EP 1664540 B1 EP1664540 B1 EP 1664540B1
Authority
EP
European Patent Office
Prior art keywords
rotors
rotary piston
housing
piston engine
engine according
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.)
Active
Application number
EP04786754A
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German (de)
English (en)
Other versions
EP1664540A1 (fr
Inventor
Felix Arnold
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.)
Cor Pumps and Compressors AG
Original Assignee
Cor Pumps and Compressors AG
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Publication date
Application filed by Cor Pumps and Compressors AG filed Critical Cor Pumps and Compressors AG
Publication of EP1664540A1 publication Critical patent/EP1664540A1/fr
Application granted granted Critical
Publication of EP1664540B1 publication Critical patent/EP1664540B1/fr
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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
    • 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
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • 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
    • F04C3/00—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type
    • F04C3/06—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees
    • F04C3/08—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C3/085—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing the axes of cooperating members being on the same plane

Definitions

  • the invention relates to a rotary piston engine, according to the preamble of the main claim.
  • a rotary piston machine is known (DE-PS 4241320) as a pump, compressor or motor, in which run the combs of teeth, a rotating drive member for limiting work spaces on a cycloid surface of a likewise toothed driven part and this drive. Between the teeth of the driving part and the driven part, the said work spaces are formed, which are increased or reduced during the rotation of the parts for their work or to produce the conveying effect on a medium.
  • US 3236186 also discloses a rotary engine according to the preamble of claim 1.
  • connection of the housing can be given in various ways, for example, as a screw connection between two "pots" on the one hand surround the pump and on the other hand the electric motor, or there may be a Verbörtelung between a cover part and a cup part, depending on how this for the practical use and, above all, a favorable production makes sense.
  • Decisive for the invention is that in the motor housing, which are arranged part related to the electric motor, such as the magnets and the bearing of the rotor and that the pump housing are housed in the machine housing, including the inflow and outflow device for the medium.
  • the claimed bushing has been proposed earlier, but is not part of the prior art. However, it plays in conjunction with the individual features of claim 1 and their embodiments a significant role.
  • Such an "electric pump” according to the invention is not limited in its application as a fuel pump, but can be used depending on the size and performance of liquid or gaseous media, with much higher pressures can be generated than in the known fuel pump (company Robert Bosch GmbH or the like). ,
  • the bearing bush is connected to a bottom bearing for the driven part, on which the driven part is supported on its side facing away from the drive part and which is also arranged rotatably on the main axis.
  • bearing bush and bottom bearing on the same axis, which is perpendicular to the bearing surface on which the output member is supported.
  • the rotors run in an inner housing in which open to the rotors towards the suction channel and the pressure channel are arranged.
  • This inner housing is rotatably and not floating within the rest of the machine housing and in particular against rotation of the bottom bearing.
  • the inner housing may be arranged in an additional housing bushing and secured there against turning.
  • This housing socket in turn, can be stored in the outer machine housing.
  • the rotors run in a recess (of the inner housing), which is open and cylindrical to the driven side, and closed to the drive side and formed spherically.
  • the driving part is supported, while the driven part is held on the cylindrical side by the bearing bush and the bottom bearing in its working position.
  • the drive part has an inner spherical region, on which the driven part is supported with a correspondingly shaped end face, or the bearing bush of the driven part.
  • the driven part is axially loaded in the direction of the drive part.
  • the output member is loaded by a spring force in the direction of the drive part.
  • a spring force may be particularly advantageous in the starting phase of such a pump in order to achieve the required for the promotion of tightness between the working edges of the intermeshing teeth.
  • the pressure channel of the machine is connected to a space between the driven part and the housing (bottom bearing) on the side facing away from the drive part. This will achieve that when the medium has reached a certain pressure in the pressure channel, the driven part is pressed against the drive part such that the above-mentioned tightness between the flanks can be achieved by this pressure.
  • the transitions between the mutually facing the axial support serving spherical bearing surfaces and the work space delimiting tooth surfaces are rounded at the rotors.
  • short-circuit channels, or short-circuiting grooves are arranged in the bottom surface of the rotors, and in particular before the opening of a suction or pressure channel adjacent work spaces are connected to each other at To compensate for the changing volumes of the work spaces.
  • the delivery chambers change between the parts, with the associated flanks of the teeth of one part to slide over the corresponding surfaces of the other part, so that the between the teeth lying spaces, from which the actual working spaces emerge, here act as harmful spaces. While an overpressure would be created in the one harmful room, a negative pressure would be created in the adjacent room.
  • a pressure equalization of the rooms which benefits the pump efficiency.
  • the illustrated fuel delivery pump has a rotary lobe pump 1 and an electric motor 2 driving this, which are arranged in a motor housing 3 and a housing cover 4 screwed thereon.
  • the electric motor is greatly simplified represents with a rotor 5 and a magnet ring 6, and an axial closure part 7 of the motor housing 3, which is connected to the motor housing 3 and sealed to this.
  • a fixed axis 8 (main axis) of the rotor 5, as well as the possible pressure connection 9 for the fuel discharge is arranged on this closure part 7.
  • the fuel pump is designed as a submersible pump, in which via suction ports 10, which are only indicated here, the fuel passes into the pump then leave the pump again via the pressure connection 9.
  • the electric motor 5, 6 flows around the fuel within the motor housing 3.
  • the second fixed bearing 11 of the rotor 5 is arranged on the housing of the pump 1, which is arranged in a corresponding bore on the end face of an inner housing 12 of the rotary lobe pump 1.
  • This inner housing 12 is arranged outside in a housing bushing 13, which in turn is sealed to the motor housing 3, partially clamped in this and partially within the housing cover 4.
  • a recess 14 is provided in the inner housing 12, with a cylindrical section 15 and a spherical section 16.
  • the recess 14 is closed on the output side by a bottom bearing 22, which is arranged obliquely to the axis of the recess 14 in order to achieve the required conveying angle and which is sealed at 23 to the housing bushing 13.
  • a bottom bearing 22 is a bearing pin 24 is arranged perpendicular to the recess 14 facing the end face of the bottom bearing 22, on which via a bore 25 (Fig. 3), the driven part 18 is mounted.
  • the output part 18 is supported on a spherical surface 29 facing the drive part 17 on a corresponding spherical recess 30 of the drive part 17 (FIG. 3).
  • FIG. 4 shows how the conveying process takes place.
  • the working spaces 21 (FIG. 2) are supplied with fuel via conveying kidneys 31 which are arranged in the walls of the inner housing 12.
  • the fuel is then directed to the underside of the driven part 18, whereby this is loaded in the direction of the drive part 17, which, however, only works when the pump has already generated pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Centrifugal Separators (AREA)
  • Knitting Machines (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (13)

  1. Machine à piston rotatif avec au moins deux rotors coopérant composés par élément d'entraînement (17) et un élément de sortie (18) qui par un endentement côté frontal délimitent des espaces fonctionnels (21) et qui sont disposés l'une par rapport à l'autre sous un angle axial de leurs axes de rotation,
    - avec un carter machine (12, 13) réceptionnant les rotors (17, 18),
    - avec un conduit d'aspiration (31) et un conduit sous pression (31), qui lorsque les rotors (17, 18) fonctionnement, peuvent être reliés par intermittence avec les espaces fonctionnels (21);
    - avec un dispositif d'entraînement (2, 5) de la machine (1),
    caractérisée en ce que
    - un moteur électrique disposé dans un carter moteur (3) qui est disposé dans le même axe que l'élément d'entraînement (17) fait office de dispositif d'entraînement (2, 5),
    - le carter machine (4, 12, 13) et le carter moteur (3) sont reliés entre eux,
    - le moteur électrique (2, 3, 5) et les rotors (17, 18) fonctionnent sur un axe principal (8) commun stationnaire disposé dans le carter moteur (3, 7) et dans le carter machine (13, 22) et
    - l'élément de sortie (18) est disposé de façon rotative sur un coussinet (24) présentant un angle axial correspondant par rapport à l'axe principal (8).
  2. Machine à piston rotatif selon la revendication 1, caractérisée en ce qu'une rotation relative du coussinet (24) de l'élément de sortie (18) sur l'axe principal (8) donne naissance à une modification de la position de rotation des espaces fonctionnels (21) par rapport au conduit d'aspiration et de refoulement (31) et donc à la phase de fonctionnement des espaces fonctionnels par rapport au conduit d'aspiration et conduit de refoulement.
  3. Machine à pistons rotatifs selon la revendication 1 ou 2, caractérisée en ce que,
    le coussinet (24) est relié à un palier de fond (22) pour l'élément de sortie (18) sur lequel l'élément de sortie (18) s'appuie par son côté opposé à l'élément d'entraînement (17) et qui est disposé également de façon rotative sur l'axe principal (8).
  4. Machine à pistons rotatifs selon l'une quelconque des revendications précédentes, caractérisée en ce que,
    les rotors (17, 18) fonctionnent dans un carter intérieur (12) dans lequel est disposé le conduit d'aspiration (31) et conduit de refoulement (31).
  5. Machine à pistons rotatifs selon la revendication 4,
    caractérisée en ce que
    le carter intérieur (12) est disposé dans un coussinet de carter (13) et est bloqué en rotation
  6. Machine à pistons rotatifs selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    les rotors (17, 18) fonctionnent dans un évidement (14) conçu pour être ouvert et sous forme cylindrique (15) en direction du côté sortie et sous forme sphérique en direction du côté entraînement (16).
  7. Machine à pistons rotatifs selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    l'élément d'entraînement (17) comporte une zone intérieure sphérique (30) sur lequel l'élément de sortie (18) ou le coussinet (24) de l'élément de sortie (18) s'appuie par une face frontale (29) conçue en conséquence.
  8. Machine à pistons rotatifs selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    l'élément de sortie (18) est soumis à une contrainte axiale en direction de l'élément d'entraînement (17).
  9. Machine à pistons rotatifs selon la revendication 8,
    caractérisée en ce que
    l'élément de sortie (18) est contraint par la force d'un ressort en direction de l'élément d'entraînement (17).
  10. Machine à pistons rotatifs selon la revendication 8 ou 9,
    caractérisée en ce que
    sur le côté opposé à l'élément d'entraînement, le conduit de refoulement de la machine est relié avec un espace entre l'élément de sortie et le carter.
  11. Machine à pistons rotatifs selon l'une quelconque des revendications précédentes,
    caractérisé en ce que sur les rotors, les passages entre les surfaces d'appui sphériques qui se font face, servant au soutien axial et les surfaces dentées délimitant l'espace fonctionnel sont arrondis.
  12. Machine à pistons rotatifs selon la revendication 11,
    caractérisée en ce que
    l'arrondi a un rayon d'au moins 1 mm.
  13. Machine à pistons rotatifs selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    dans les surfaces du fond des rotors sont disposés des conduits de court-circuit ou rainures de court-circuit, par l'intermédiaire desquel(le)s, pendant la rotation et notamment avant la mise à contribution d'un conduit d'aspiration ou de refoulement, on peut relier entre eux des espaces fonctionnels voisins pour obtenir une compensation de pression, avec les volumes en variation des espaces fonctionnels.
EP04786754A 2003-09-11 2004-09-10 Machine a piston rotatif Active EP1664540B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342342 2003-09-11
PCT/DE2004/002033 WO2005024236A1 (fr) 2003-09-11 2004-09-10 Machine a piston rotatif

Publications (2)

Publication Number Publication Date
EP1664540A1 EP1664540A1 (fr) 2006-06-07
EP1664540B1 true EP1664540B1 (fr) 2007-01-24

Family

ID=34258650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786754A Active EP1664540B1 (fr) 2003-09-11 2004-09-10 Machine a piston rotatif

Country Status (8)

Country Link
US (1) US7275920B2 (fr)
EP (1) EP1664540B1 (fr)
JP (1) JP2007505249A (fr)
AT (1) ATE352717T1 (fr)
BR (1) BRPI0414235A (fr)
CA (1) CA2538004A1 (fr)
DE (2) DE502004002805D1 (fr)
WO (1) WO2005024236A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026048A1 (de) * 2004-05-25 2005-12-29 Cor Pumps + Compressors Ag Spaltverluststromsteuerung
US8834140B2 (en) * 2004-05-25 2014-09-16 Cor Pumps + Compressors Ag Leakage loss flow control and associated media flow delivery assembly
JP5085528B2 (ja) * 2005-03-16 2012-11-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 回転ピストン機械
MX2008014324A (es) 2006-05-10 2009-05-28 Cor Pumps & Compressors Ag Maquina de embolo giratorio.
RU2494261C2 (ru) * 2007-03-13 2013-09-27 Роберт Бош Гмбх Объемная машина для использования в качестве насоса или двигателя
US8517707B2 (en) * 2007-08-31 2013-08-27 Robert Bosch Gmbh Method for converting energy from compressed air into mechanical energy and compressed air motor therefor
US9115646B2 (en) 2010-06-17 2015-08-25 Exponential Technologies, Inc. Shroud for rotary engine
KR101133302B1 (ko) 2010-07-09 2012-04-04 금아유압 주식회사 축방향 피스톤 모터
DE102013226974A1 (de) * 2013-12-20 2015-06-25 Robert Bosch Gmbh Taumelpumpe mit im Stator gelagerter Welle
JP2021507163A (ja) 2017-12-13 2021-02-22 エクスポネンシャル テクノロジーズ, インコーポレイテッドExponential Technologies, Inc. 回転式流体流動装置
US11168683B2 (en) 2019-03-14 2021-11-09 Exponential Technologies, Inc. Pressure balancing system for a fluid pump
DE102020124825A1 (de) 2020-09-23 2022-03-24 Kolektor Group D.O.O. Motor-Pumpe-Einheit
DE102021103306A1 (de) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Handgeführtes Druckflüssigkeitsgerät

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662482A (en) * 1951-09-12 1953-12-15 Paulsmeier Fritz Ball piston pump
US2831436A (en) * 1952-08-19 1958-04-22 Garvenswerke Maschinen Pumpen & Waagenfabrik W Garvens Pump
US3101700A (en) * 1960-06-14 1963-08-27 Meredith E Bowdish Rotary compressor or engine
US3236186A (en) 1963-04-29 1966-02-22 Wildhaber Ernest Positive-displacement unit
DE1551081A1 (de) * 1967-06-06 1970-04-16 Walter Bietzig Drehkugelmaschine
US4981424A (en) 1988-12-21 1991-01-01 The United States Of America As Represented By The Secretary Of The Navy High pressure single screw compressors
DE4241320C2 (de) * 1991-12-09 2002-01-17 Arnold Felix Drehkolbenmaschine
CA2215219C (fr) * 1996-11-19 2000-07-04 Yukio Kajino Moteur rotatif de type a disques
DE10035900A1 (de) * 2000-07-21 2002-01-31 Bosch Gmbh Robert Innenzahnradpumpe
JP2002364572A (ja) 2001-06-07 2002-12-18 Kawakami Seisakusho:Kk 流体圧送装置
DE10150653A1 (de) * 2001-10-13 2003-04-30 Bosch Gmbh Robert Innenzahnradpumpe
JP4473122B2 (ja) 2002-08-02 2010-06-02 コア・ポンプス・プルス・コンプレッサーズ・アクチエンゲゼルシャフト 変位可能な内部ケーシングから成る回転ピストン機械

Also Published As

Publication number Publication date
DE102004044301A1 (de) 2005-05-19
CA2538004A1 (fr) 2005-03-17
ATE352717T1 (de) 2007-02-15
US20060257277A1 (en) 2006-11-16
DE502004002805D1 (de) 2007-03-15
WO2005024236A1 (fr) 2005-03-17
US7275920B2 (en) 2007-10-02
BRPI0414235A (pt) 2006-10-31
EP1664540A1 (fr) 2006-06-07
JP2007505249A (ja) 2007-03-08

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