EP1474591A1 - Moteur a air comprime - Google Patents

Moteur a air comprime

Info

Publication number
EP1474591A1
EP1474591A1 EP03702831A EP03702831A EP1474591A1 EP 1474591 A1 EP1474591 A1 EP 1474591A1 EP 03702831 A EP03702831 A EP 03702831A EP 03702831 A EP03702831 A EP 03702831A EP 1474591 A1 EP1474591 A1 EP 1474591A1
Authority
EP
European Patent Office
Prior art keywords
air motor
motor according
rotor
passage openings
sleeve
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
EP03702831A
Other languages
German (de)
English (en)
Other versions
EP1474591B1 (fr
Inventor
Thomas Müller
Kurt Müller
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.)
ROTOMED AG
Original Assignee
KMB Feinmechanik 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 KMB Feinmechanik AG filed Critical KMB Feinmechanik AG
Publication of EP1474591A1 publication Critical patent/EP1474591A1/fr
Application granted granted Critical
Publication of EP1474591B1 publication Critical patent/EP1474591B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/348—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the vanes positively engaging, with circumferential play, an outer rotatable 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/348—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the vanes positively engaging, with circumferential play, an outer rotatable 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet
    • 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
    • F05C2223/00—Cellulosic materials, e.g. wood
    • 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
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/04—Composite, e.g. fibre-reinforced

Definitions

  • the invention relates to a compressed air motor with a housing having a guide bore and a rotor rotatably mounted therein, the rotor being provided with essentially radially extending slots in which plate-shaped lamellae are radially displaceable by the centrifugal force and in the area of the lamellae between the outside of the Rotor and the guide bore of the housing is arranged a substantially cylindrical, freely rotatable flight sleeve enveloping the outside of the fins.
  • Vane motors that can be operated with compressed air.
  • European patent EP-B1-394651 describes a construction with a rotor and lamellas which can be displaced by centrifugal force, the rotor being arranged in a flight sleeve which is accommodated within a bore in a housing.
  • this flight sleeve is to prevent the lamellas from rubbing against the inside wall of the housing.
  • the rotor and the flight sleeve thus rotate during operation.
  • the bore of the housing is not cylindrical in this known construction, but is non-cylindrical deformed on one side by a pocket. This is because it was obviously considered that a compressed air supply into the space between the flight sleeve and the outer cylinder wall was required. Another reason for the one-sided external cylindrical deformation has probably become necessary because the pressure load of the axially inflowing compressed air into the space between the rotor and the flight sleeve also resulted in a tendency for the flight sleeve to shift sideways, which was compensated for by the additional radial play in the recess could be.
  • the non-centric formation of the bore in the housing not only results in an increased production outlay, but also in air loss during operation, which manifests itself in low efficiency.
  • compressed air motors can be offered without oil lubrication, since no lubricating oil may get into the human body.
  • Compressed air motors used in surgery are difficult to seal due to their high speeds (up to approx. 80,000 rpm) ensure that there is no leakage of air and the associated oil discharge from the compressed air motor.
  • the invention is therefore based on the object of providing an oil-free-operated compressed air motor with improved efficiency, the production of which should not be particularly difficult.
  • the use of a perforated flight sleeve or a flight sleeve provided through the wall results in a surprisingly good bearing of the flight sleeve both in terms of statics and in terms of low friction with respect to the fins of the rotor and also with respect to the inner wall of the outer housing.
  • the cylindrical bore is easy to make.
  • the air connections for air intake and air outlet do not have to be specially designed in the system according to the invention, and they are preferably deburred or sandblasted in order to further improve the flow efficiency.
  • the rotor can be provided with non-radial fins, but the fins are preferably arranged in radial slots and are not positively controlled.
  • the preferred material for the lamellae and / or for the flying sleeve is preferably plastic, in particular phenolic resin-cotton fine fabric.
  • the bores in the flight sleeve are optionally distributed regularly, but can also be distributed or configured differently depending on the needs and depending on the overall length of the flight sleeve.
  • the boreholes are preferably statistically or randomly distributed with regard to the noise-optimized behavior of the flight sleeve, ie: there is as far as possible no regular spacing between the boreholes in the circumferential direction of the flight sleeve. This prevents dominant tones from being generated in the air medium at high speeds.
  • the holes can also be arranged so that the holes deliberately generate complementary tones, so that a "white noise” (i.e. an inaudible noise for the observer) arises.
  • a "white noise” i.e. an inaudible noise for the observer
  • a noise-improving effect of the type described above can also be achieved if the fins are not distributed exactly symmetrically around the circumference of the rotor.
  • the longitudinal slots for the lamellae are arranged offset approximately parallel to the radial planes. This results in a larger area exposed to the compressed air than with radially arranged fins.
  • slats are preferably provided, but the invention is not restricted to this, and more or fewer slats can also be provided depending on the diameter and the choice of material.
  • FIGS. 1 and 2 together with the objects described or protected in the claims form integral components of the disclosure of this application.
  • the figures are described coherently and comprehensively. Identical reference symbols mean identical components, reference symbols with different indices indicate identical components. Show it:
  • FIG. 1 shows a longitudinal section through an air motor according to the invention
  • Fig. 2 shows a cross section through the compressed air motor shown in Fig. 1, along the plane II -II.
  • FIG. 3 shows a cross section corresponding to FIG. 2 through a further embodiment of an air motor according to the invention.
  • the air motor shown in FIGS. 1 and 2 essentially consists of a multi-part housing, designated overall by 1.
  • a rotor 2 is rotatably mounted in the housing 1 by means of bearings 3, 4.
  • the central region of the housing 1 has an essentially cylindrical guide bore 5.
  • a tool holder 6 is located at the front end of the rotor 2.
  • the rotor 2 has four essentially radially extending longitudinal slots 7. In the longitudinal slots 7 slats 8 are guided radially.
  • a flight sleeve 9 surrounds the outer end face of the lamellae 8 and is freely rotatably mounted in the guide bore 5 of the housing 1.
  • the flight sleeve 9 rotates with the rotor 2 in the housing 1, the rotational entrainment between the rotor 2 and the flight sleeve 9 only via friction between the Slats 8 and the flight sleeve 9 takes place.
  • the flight sleeve 9 prevents the lamellae 8 from touching the guide bore 5 and thus also associated wear and tear of the lamellae 8 and the guide bore 5.
  • the compressed air is supplied via a feed channel 12 which opens into the guide bore 5 at the rear end face of the rotor 2 ,
  • the air outlet 13 is located on the side which is approximately radially opposite the feed channel 12.
  • the flight sleeve 9 is provided with average openings 10, 11. These average openings 10, 11 serve for the passage of the compressed air from the chambers 14 formed between the fins 8, the outside of the rotor 2 and the inside of the flight sleeve 9. Through the passage of part of the compressed air, an air cushion is also built up on the outside of the flight sleeve 9 , This prevents the flight sleeve 9 from being pressed against the bore of the housing 1 on one side by the internal pressure and thus causing great wear between the flight sleeve 9 and the housing 1.
  • the average openings 10, 11 can be formed, for example, as bores or as slots.
  • the passage openings 10, 11 are preferably arranged axially and / or radially offset from one another. However, this displacement of the passage openings can have a positive influence on the sound waves that occur with such devices (up to approx. 80,000 rpm).
  • the lamellae 8 and / or the flight sleeve 9 can preferably be produced from a plastic, in particular phenolic resin-cotton fine fabric. On the one hand, this results in a low weight and associated small flywheel mass, so that such compressed air motors are very dynamic, i.e. with strong speed change, can be operated.
  • FIG. 3 The cross section shown in FIG. 3 through a further embodiment of a compressed air motor according to the invention shows a housing 21 and a rotor 22.
  • the housing 21 has a guide bore 25.
  • the rotor 22 is provided with longitudinal slots 27 which, however, in contrast to the embodiment shown in FIG. 2, do not run radially, but are arranged in a plane offset parallel to the radial plane.
  • Slats 28 are also slidably supported in the longitudinal slots 27.
  • a flight sleeve 29 surrounds the outside of the fins 28 and is mounted in the guide bore 25 of the housing 1.
  • the flight sleeve 29 is provided with at least one average opening 30. Compressed air can enter the annular gap between the housing 21 and the flight sleeve 29 through the average opening 30.
  • a type of air cushion is thus built up, which causes the flight sleeve 29 to be lifted off the guide bore 25 of the housing 21, and wear phenomena are thus avoided.
  • the average opening 30 can be arranged axially and / or radially at different locations on the flight sleeve 29. It is also possible to provide a plurality of openings on the circumference of the flight sleeve, the average openings being able to be designed, for example, as bores or as slots.
  • Both the flight sleeve 29 and the fins 28 are preferably made of a plastic, for example phenolic resin-cotton fine fabric.

Abstract

L'invention concerne un moteur à air comprimé comprenant un carter (1) et un rotor (2) monté de façon à pouvoir tourner à l'intérieur dudit carter. Selon la présente invention, ce rotor (2) présente des rainures (7) s'étendant sensiblement en sens radial ; des lamelles sous forme de plaques (8) sont montées dans ces rainures (7), de façon à pouvoir être déplacées en sens radial par la force centrifuge, et des réservoirs d'air circulaires variables sont formés entre le carter (1) et la face extérieure du rotor (2). Lesdites lamelles (8) sont entourées à l'extérieur par une gaine flottante (9), présentant au moins une ouverture de passage pour l'air comprimé.
EP03702831A 2002-02-05 2003-02-04 Moteur a air comprime Expired - Lifetime EP1474591B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH196022002 2002-02-05
CH1962002 2002-02-05
PCT/IB2003/000350 WO2003067032A1 (fr) 2002-02-05 2003-02-04 Moteur a air comprime

Publications (2)

Publication Number Publication Date
EP1474591A1 true EP1474591A1 (fr) 2004-11-10
EP1474591B1 EP1474591B1 (fr) 2008-07-30

Family

ID=27671992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03702831A Expired - Lifetime EP1474591B1 (fr) 2002-02-05 2003-02-04 Moteur a air comprime

Country Status (9)

Country Link
US (1) US7134856B2 (fr)
EP (1) EP1474591B1 (fr)
JP (1) JP2005522611A (fr)
KR (1) KR20040077882A (fr)
CN (1) CN1330851C (fr)
AT (1) ATE403066T1 (fr)
AU (1) AU2003205948A1 (fr)
DE (1) DE50310241D1 (fr)
WO (1) WO2003067032A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10310863B3 (de) * 2003-03-11 2004-10-28 Schmid & Wezel Gmbh & Co Schleifgerät
GB0419848D0 (en) * 2004-09-07 2004-10-13 Carbonate Ltd Pumps
EP1910645B1 (fr) * 2005-07-22 2014-09-10 Rotomed AG Micromoteur a air comprime
KR100799329B1 (ko) * 2007-06-28 2008-01-30 임기원 공압을 이용한 유증기 흡입장치 및 이를 구비한 유증기회수형 주유기
CN102248993B (zh) * 2011-05-16 2014-03-26 哈尔滨工程大学 气动微型观光潜艇推进装置
WO2014075660A2 (fr) * 2012-11-19 2014-05-22 Ixetic Bad Homburg Gmbh Pompe à vide de véhicule automobile
CN103527253A (zh) * 2013-10-21 2014-01-22 宋振才 一种能量转换装置
CN103527252A (zh) * 2013-10-21 2014-01-22 宋振才 一种叶片式能量转换装置
CN115199338A (zh) * 2022-06-30 2022-10-18 宁波郡邦新材料有限公司 一种新型的势能转化成机械能的能量传递装置

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US2407613A (en) * 1943-01-25 1946-09-10 Victor Products Ltd Compressed-air driven drill
US3417664A (en) * 1966-08-29 1968-12-24 Black & Decker Mfg Co Vane construction for pneumatic motor
GB1336128A (en) 1969-11-10 1973-11-07 Tac Construction Materials Ltd Plastics material reinforced with carbon and other fibres
US4004865A (en) * 1973-05-01 1977-01-25 Nikkiso Eiko Co., Ltd. Pump with yieldable radial partitions and rotatable side plates
DE2421906C2 (de) * 1974-05-07 1984-04-26 UNUS dei F.lli Rossato V. & S., S.N.C., Padua Drehkolbenluftpumpe
DE2621486A1 (de) * 1976-05-14 1977-12-01 Kaltenbach & Voigt Pneumatischer lamellenmotor
DE2621485A1 (de) * 1976-05-14 1977-12-01 Kaltenbach & Voigt Pneumatischer lamellenmotor
US4197061A (en) * 1977-12-27 1980-04-08 Boeing Commercial Airplane Company Rotary pneumatic vane motor with rotatable tubing contacted by vanes
JPS5865988A (ja) * 1981-10-13 1983-04-19 Nippon Piston Ring Co Ltd 回転圧縮機
JPS59105990A (ja) * 1982-12-11 1984-06-19 Nippon Piston Ring Co Ltd 回転圧縮機
JPS59188085A (ja) * 1983-03-31 1984-10-25 Mazda Motor Corp 回転圧縮機の回転スリ−ブ
JPS59188089A (ja) * 1983-03-31 1984-10-25 Mazda Motor Corp 回転圧縮機の回転スリ−ブ
JPS59188080A (ja) * 1983-03-31 1984-10-25 Mazda Motor Corp 回転スリ−ブを有する回転圧縮機
JPS59188081A (ja) 1983-03-31 1984-10-25 Mazda Motor Corp 回転スリーブを有する回転圧縮機
JPS61268892A (ja) 1985-03-30 1986-11-28 Nippon Piston Ring Co Ltd 回転圧縮機
CN86105303A (zh) * 1986-08-06 1988-02-17 江西省永修有机化工总厂 真空泵旋片新材料——三脂棉泵用旋片
CH672819A5 (fr) 1988-04-26 1989-12-29 Waelchli Hans
DE3913908A1 (de) * 1989-04-27 1990-10-31 Schmid & Wezel Druckluftlamellenmotor
DE19744812A1 (de) 1997-10-02 1999-04-08 Herold & Semmler Transporttech Rotationskolbenmaschine
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Also Published As

Publication number Publication date
ATE403066T1 (de) 2008-08-15
US7134856B2 (en) 2006-11-14
CN1620545A (zh) 2005-05-25
AU2003205948A1 (en) 2003-09-02
US20050129560A1 (en) 2005-06-16
DE50310241D1 (de) 2008-09-11
WO2003067032A1 (fr) 2003-08-14
KR20040077882A (ko) 2004-09-07
JP2005522611A (ja) 2005-07-28
EP1474591B1 (fr) 2008-07-30
CN1330851C (zh) 2007-08-08

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