EP2188496B1 - Moteur à air comprimé - Google Patents

Moteur à air comprimé Download PDF

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Publication number
EP2188496B1
EP2188496B1 EP08801157A EP08801157A EP2188496B1 EP 2188496 B1 EP2188496 B1 EP 2188496B1 EP 08801157 A EP08801157 A EP 08801157A EP 08801157 A EP08801157 A EP 08801157A EP 2188496 B1 EP2188496 B1 EP 2188496B1
Authority
EP
European Patent Office
Prior art keywords
rotor
housing
compressed
air
motor
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
EP08801157A
Other languages
German (de)
English (en)
Other versions
EP2188496A2 (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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2188496A2 publication Critical patent/EP2188496A2/fr
Application granted granted Critical
Publication of EP2188496B1 publication Critical patent/EP2188496B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F01C3/00—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members
    • F01C3/06—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees
    • F01C3/08—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members 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
    • F01C3/085—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members 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
    • 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
    • F01C1/084—Toothed wheels
    • 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
    • F04C2240/50—Bearings

Definitions

  • the invention relates to a compressed air driven air motor according to the preamble of claim 1.
  • US 3,817,666 is considered to be the closest prior art.
  • compressed air motor compressed air motor
  • compressed air motor with a rotating, an output shaft actuated rotor has in the manner of a vane cell unit by springs or centrifugal force radially pressed against the wall vanes, as is also known in air compressors in a variety of ways ( DE OS 31 17 412 A1 ).
  • the disadvantage of this type of drive is that the sealing wings in the direction of the rotating shaft rotor have a rectangular surface contact with the housing wall on which they slide along, with the disadvantage that it is extremely difficult here to achieve low friction and corresponding tightness quite apart from the disadvantages of extremely high production costs and problems with wear due to sealing and lubrication, which of course has a direct effect on the life, or the decreasing efficiency of the air motor with a corresponding duration of use.
  • the compressed air driven drive motor should also there for compressed air tools, eg. B. grinder, use, which is known to be less important to the actual drive quality, but on the life.
  • housing wall and rotary piston coating should be elastic to compensate for this known disadvantage, but this is associated with a corresponding effort.
  • a rotary piston rotary engine, a machine tool, or a drill spindle to drive.
  • the elastic design of such rotary piston set significant limits, since the rotary pistons rub on the housing wall and not roll, resulting in an elastic intermediate area to a strong braking effect, or a significant loss of rotational forces, or the torque to the output shaft of the Air motor leads.
  • This unit can serve to implement the mechanical rotational energy in a high-speed generator, as used for example not only in dental technology and in which the rotor is rotationally coupled to the serving as a shaft rotor rotary piston.
  • the working space of the shaft rotor limiting the working space except the housing on a spur gear toothing, which is provided except on the shaft rotor on a same with the teeth and therefore correspondingly toothed counter rotor whose axis of rotation to the shaft rotor has a certain angle but has the same direction of rotation as the shaft rotor, wherein the intermeshing toothing is formed as Trochoidenvertechnikung.
  • both rotors are each arranged on a rolling bearing, wherein the rolling bearings are supported in the housing of the motor and wherein at least one rolling bearing in the housing in the direction of the axis of rotation including the rotor is axially adjustable.
  • the rolling bearings provided for supporting the shaft rotor and the counter rotor are supported in the housing of the engine. Smooth running is particularly important for pneumatically operated units, whereby the lubrication of the bearing is a not inconsiderable problem here, which may be one of the reasons for the bias of the experts.
  • the rolling bearing of the shaft rotor is supported in the housing by a screwed in the direction of the rotation axis support nut.
  • the rolling bearing of the counter-rotor is arranged in the housing and supported by a housing closing the support plug.
  • the inlet channel is distributed over a certain angle of rotation, narrower but in the direction of rotation extending widening, according to the pressure side formed between the rotors narrow opening to the working space.
  • the outlet channel is distributed over a certain angle of rotation for degradation relatively widely formed according to the this point to the outlet channel wide open working space.
  • the working space can be open to the outside, since the energy input to the compressed air has already been used up.
  • a housing 1 namely a shaft rotor 2 and a Counter rotor 3, which engage with frontally arranged teeth 4 and 5 corresponding to each other and thereby limit with the housing 1 engine working spaces 6.
  • the axis of rotation of the shaft rotor 2 is denoted by I, the axis of rotation of the counter rotor 3 with II.
  • the two axes of rotation I and II enclose an angle ⁇ ⁇ 180 °, so that upon rotation of the rotors 2 and 3, the engine working spaces 6 correspondingly increase, respectively zoom out.
  • the in Fig. 1 shown longitudinal section through the air motor passes through these two axes of rotation I and II.
  • the housing 1 has inside for receiving the rotors on a cylindrical portion 7 and a spherical portion 8, wherein the latter merges into a cylindrical portion 9 for receiving the bearing of the counter-rotor 3 and corresponding to its offset center axis II.
  • the counter-rotor 3 is mounted on a roller bearing 10th rotatably mounted, which is arranged clamped by a support plug 11 in the cylindrical portion 9 of the housing 1.
  • the support plug 11 is screwed into the housing 1 for fastening the roller bearing 10.
  • a spherical bearing surface 12 is provided, which at the same time also forms the engine working spaces 6 formed by the front teeth 4 and 5 of the rotors separates each other.
  • a cycloidal toothing is provided with the known advantages (US Pat. DE PS 42 41 320 C2 ).
  • the actual power part forming wave rotor 2 is also rotatably mounted on a roller bearing 13, which is supported by a support nut 14, on the one hand in the cylindrical portion 7 of the housing 1 is guided, but on the other hand there is screwed via a thread 15 in the housing 1.
  • the shaft rotor 2 also has a coupling opening 16 for receiving a rotary coupling, not shown, to the rotational movement transfer.
  • a flange 17 is arranged to fasten a driven unit according to.
  • a flange 18 is provided for connection to the compressed air inlet in a still at this point engine working space.
  • the housing is on the one hand opposite to in Fig. 1 shown section rotated by 90 ° and also formed cylindrical over the entire length.
  • the axes of rotation I and II coincide in the representation, which only as a perspective but also in Fig. 4 is recognizable.
  • the ones in Fig. 1 corresponding things are with the same reference number as in Fig. 1 and distinguished by an index stroke.
  • only one housing is shown as a variant, wherein the in Fig. 2 shown bleed serve to illustrate the outlet 19 after utilizing the compressed air, ie after their relaxation.
  • a connection bore 20 provided for the inlet of the compressed air in the not shown here but opposite at this point small pump working space 4.
  • a corresponding large outlet opening 19 provided to achieve an actual relaxation of the compressed air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Rotary Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Claims (5)

  1. Moteur à air comprimé, comprenant un rotor à arbre (2) entraîné par air comprimé fonctionnant en tant que piston rotatif, un boîtier (1) recevant le rotor à arbre (2) et limitant avec lui un espace de travail du moteur (6), un raccord d'entrée (18) et un canal de sortie (19) de l'espace de travail du moteur (6) pour l'air comprimé ou l'air évacué détendu, le rotor à arbre (2) étant accouplé à l'arbre d'entraînement d'un groupe produit par l'énergie mécanique de rotation, le rotor à arbre (2) présentant, vers l'espace de travail du moteur (6), une denture trochoïde et coopérant avec un rotor conjugué (3) venant en prise dans cette denture, et donc pourvu d'une denture correspondante, et entraîné par le rotor à arbre, une augmentation ou une diminution correspondante du volume de l'espace de travail du moteur (6) due à un écart angulaire de 180 degrés entre les axes de rotation des rotors (2, 3) lors de la rotation se produisant avec une détente correspondante de la pression d'air et au moins l'un des rotors étant disposé sur un palier à roulement, caractérisé en ce que le support sur palier du rotor à arbre (2) s'effectue par le biais d'un palier à roulement (13) et le rotor conjugué est supporté sur un palier à roulement (10), les paliers à roulement (10, 13) étant supportés dans le boîtier du moteur et au moins un palier à roulement (10, 13) pouvant être déplacé axialement dans le boîtier dans la direction de l'axe de rotation (I, II) conjointement avec le rotor.
  2. Moteur à air comprimé selon la revendication 1, caractérisé en ce que le palier à roulement (13) du rotor à arbre (2) est porté par un écrou de support (14) qui est fixé au boîtier (1).
  3. Moteur à air comprimé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le palier à roulement (10) du rotor conjugué (3) est disposé dans le boîtier (1) et est porté par un bouchon de support (11) fermant le boîtier.
  4. Moteur à air comprimé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le canal d'entrée est réalisé de manière à s'agrandir légèrement dans la direction de rotation, et débouche dans l'espace de travail présentant de ce côté un volume encore faible.
  5. Moteur à air comprimé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'espace de travail (4) se prolonge dans une ouverture de sortie (19) disposée dans le boîtier (1), qui présente une section transversale importante permettant la détente complète de l'air comprimé.
EP08801157A 2007-08-31 2008-08-15 Moteur à air comprimé Active EP2188496B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007041461 2007-08-31
PCT/DE2008/001334 WO2009026883A2 (fr) 2007-08-31 2008-08-15 Procédé de conversion d'énergie d'air comprimé en énergie mécanique et moteur à air comprimé pour ce procédé

Publications (2)

Publication Number Publication Date
EP2188496A2 EP2188496A2 (fr) 2010-05-26
EP2188496B1 true EP2188496B1 (fr) 2011-03-16

Family

ID=40292461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801157A Active EP2188496B1 (fr) 2007-08-31 2008-08-15 Moteur à air comprimé

Country Status (7)

Country Link
US (1) US8517707B2 (fr)
EP (1) EP2188496B1 (fr)
CN (1) CN101970801B (fr)
AT (1) ATE502185T1 (fr)
DE (2) DE502008002903D1 (fr)
ES (1) ES2360270T3 (fr)
WO (1) WO2009026883A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101970801B (zh) * 2007-08-31 2013-04-10 罗伯特·博世有限公司 用于将压缩空气能转化为机械能的方法及其压缩空气发动机
RU2014128985A (ru) 2011-12-19 2016-02-10 Экспоненшиал Текнолоджиз, Инк. Расширитель объемного типа
DE102014209140A1 (de) * 2013-05-23 2014-11-27 Robert Bosch Gmbh Förderaggregat
WO2019113704A1 (fr) 2017-12-13 2019-06-20 Exponential Technologies, Inc. Dispositif à écoulement de fluide rotatif
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

Family Cites Families (25)

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US1623596A (en) * 1925-09-17 1927-04-05 Bloomfield Holmes Corp Compressor
US2049775A (en) * 1934-10-13 1936-08-04 Frank E Holmes Fluid control device
US3236186A (en) * 1963-04-29 1966-02-22 Wildhaber Ernest Positive-displacement unit
US3273341A (en) * 1963-04-29 1966-09-20 Wildhaber Ernest Positive-displacement thermal unit
CH458608A (fr) * 1966-06-14 1968-06-30 Voser Otto Machine volumétrique
US3492974A (en) * 1968-01-30 1970-02-03 Heinrich Kreimeyer Rotary nutating power device
FR2148677A5 (fr) * 1971-07-30 1973-03-23 Zimmern Bernard
US3817666A (en) * 1973-02-12 1974-06-18 E Wildhaber Rotary positive displacement unit
US3856440A (en) 1974-03-19 1974-12-24 E Wildhaber Rotor pair for positive fluid displacement
US4285644A (en) * 1979-02-15 1981-08-25 Takalo Kauko A Expansion or compression machine with interengaging members rotating on perpendicular axes
DE3117412A1 (de) 1981-05-02 1982-11-18 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Druckluftbetriebener antriebsmotor fuer druckluftwerkzeuge, z.b. schleifer
US4540343A (en) * 1982-11-17 1985-09-10 International Hydraulic Systems, Inc. Spherical gear pump
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
US5513969A (en) 1991-12-09 1996-05-07 Arnold; Felix Rotary piston machine having engaging cycloidal gears
DE9320601U1 (de) 1993-06-05 1994-10-13 Festo Kg, 73734 Esslingen Fluidisch betätigbarer Drehantrieb
DE19613262A1 (de) 1996-04-02 1997-10-09 Festo Kg Drehkolbenrundlaufmotor
ATE359441T1 (de) * 2001-01-30 2007-05-15 Outland Technologies Inc Verdrängervorrichtung, -verfahren und -apparat zur bereitstellung einer minimalkontaktdichtung
US6494678B1 (en) * 2001-05-31 2002-12-17 General Electric Company Film cooled blade tip
EP1527256B1 (fr) * 2002-08-02 2013-05-22 Robert Bosch GmbH Machine a piston rotatif avec enveloppe interne mobile
JP5053637B2 (ja) * 2003-09-11 2012-10-17 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
DE502004002805D1 (de) * 2003-09-11 2007-03-15 Cor Pumps & Compressors Ag Drehkolbenmaschine
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CN100412319C (zh) * 2005-04-05 2008-08-20 山东嘉豪集团有限公司 空气发动机
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Also Published As

Publication number Publication date
CN101970801A (zh) 2011-02-09
DE502008002903D1 (de) 2011-04-28
WO2009026883A2 (fr) 2009-03-05
CN101970801B (zh) 2013-04-10
US20100215531A1 (en) 2010-08-26
ATE502185T1 (de) 2011-04-15
DE102008037903A1 (de) 2009-03-05
ES2360270T3 (es) 2011-06-02
EP2188496A2 (fr) 2010-05-26
WO2009026883A3 (fr) 2009-05-07
US8517707B2 (en) 2013-08-27

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