EP0394651A1 - Moteur à palettes à air comprimé - Google Patents

Moteur à palettes à air comprimé Download PDF

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Publication number
EP0394651A1
EP0394651A1 EP90104605A EP90104605A EP0394651A1 EP 0394651 A1 EP0394651 A1 EP 0394651A1 EP 90104605 A EP90104605 A EP 90104605A EP 90104605 A EP90104605 A EP 90104605A EP 0394651 A1 EP0394651 A1 EP 0394651A1
Authority
EP
European Patent Office
Prior art keywords
air
vane motor
housing
motor 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.)
Granted
Application number
EP90104605A
Other languages
German (de)
English (en)
Other versions
EP0394651B1 (fr
Inventor
Michael Kristof
Josef 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.)
Schmid and Wezel GmbH and Co
Original Assignee
Schmid and Wezel GmbH and Co
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 Schmid and Wezel GmbH and Co filed Critical Schmid and Wezel GmbH and Co
Priority to AT90104605T priority Critical patent/ATE93009T1/de
Publication of EP0394651A1 publication Critical patent/EP0394651A1/fr
Application granted granted Critical
Publication of EP0394651B1 publication Critical patent/EP0394651B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a compressed air vane motor with a roller-mounted rotor which has receiving slots distributed around the circumference, in which fins are guided in a radially displaceable manner and the outer sealing edges of which lie against the inner surface of a cylindrical outer casing by the centrifugal force in order to reduce the wear and friction of the eccentrically opposite the rotor offset outer jacket is rotatably guided in the housing and is carried by the friction between the fins and the outer jacket, the cylindrical outer jacket being rotatably supported in the housing by at least one air bearing and for this purpose in an approximately circular-cylindrical guide bore in the housing with little radial play is recorded.
  • the outer jacket is rotatably supported by roller bearings. Despite this good storage and guidance, a relatively strong wear occurs between the outer jacket and the fins due to insufficient lubrication of the bearing, so that only a short service life of the vane motor can be achieved when operating with oil-free compressed air.
  • the object of the present invention is to design a compressed air vane motor of the type mentioned in such a way that the compressed air vane motor has a long service life when using oil-free compressed air.
  • the invention provides that at least one air pocket can be provided in the housing towards the outer jacket, the axial length of this air pocket corresponds to the axial length of the circumferential outer casing, so that air is entrained by the rotation from the air pocket and so a contact-free, strongly vibration-damped mounting of the outer casing in the housing takes place practically during operation. Due to the special design of the air bearing, any impacts and vibrations are strongly damped, so that in an unexpected way, wear and tear and a long service life are practically unlikely to occur between the fins and the outer jacket, even with oil-free operation.
  • the entrainment of the air boundary layer in particular is considerably facilitated in that the transition between the air pocket and the guide bore is rounded in the circumferential direction.
  • a high efficiency of the air vane motor can be achieved with little wear and tear that the cylindrical outer jacket is guided at the front with little play between two sealing surfaces running perpendicular to the axis of rotation, with at least one of the sealing surfaces opening into an air inlet duct and / or an air outlet duct.
  • the sealing surface on the drive shaft side can be designed to run all the way around with the rotor and for this purpose can be expediently formed by a sealing disk fixedly arranged on the rotor.
  • the Sealing disc rest on a shoulder of the rotor with an end face, which end face can partially serve as a sealing surface. Furthermore, the counter surface of the sealing disk opposite the sealing surface can be part of an axial bearing for the rotor to save weight.
  • the sealing washer can have a collar which is braced on the face side with the inner ring of the drive-side roller bearing, so that a simple, space-saving construction is achieved with simple, possibly automatic assembly.
  • a simple, dimensionally accurate manufacture and assembly can be achieved in that the housing enclosing the rotor has a cylinder part which is held on the end face between two concentric bearing parts, these bearing parts axially guiding the rotor.
  • the output-side bearing part can be a ring with a radially inwardly projecting flat part, one side of the flat part having the counter surface interacting with the sealing disk.
  • the bearing part on the output shaft side can furthermore have an axial outer collar which is flush with the end face of the outer ring of the rolling bearing.
  • the mode of operation of the air bearing can be improved in that the air pocket or the air pockets is connected to the air inlet duct, since with higher air pressure the boundary layers on the surfaces of the parts sliding against one another are thicker and more stable.
  • the air pocket can be formed by a partially cylindrical surface which is eccentric with respect to the cylindrical guide bore and whose radius of curvature is smaller or at most equal to the radius of curvature of the guide bore.
  • the preferred embodiment shown in the accompanying figures shows a compressed air vane motor with a rotor 1, which is rotatably supported by roller bearings 2.2 'in bearing parts 3.3'.
  • the rotor 1 is provided with four radial receiving slots 5, in which fins 6 are received in a radially displaceable manner.
  • the fins 6 have a rectangular shape and they are pressed by the centrifugal force with their sealing edges 4 against the cylindrical inner surface 7 of a tubular outer jacket 8.
  • This outer casing 8 is rotatably offset from the axis of rotation 9 of the rotor 1 in a guide bore 10 of a housing 11.
  • the housing 11 itself consists of a cylinder part 11 ', on which the bearing parts 3, 3' connect at the end with a continuous cylindrical outer surface 12.
  • the rotor 1, which is rotatable about the axis of rotation 9, is connected to an output shaft 14, on which an inner ring 16 of the roller bearing 2 is connected to a sealing disk 17 via a clamping nut 15.
  • the sealing disk 17 itself has a sealing surface 18 directed perpendicular to the axis of rotation 9, which bears against a shoulder 19 of the rotor 1.
  • the sealing washer 17 is at least partially rotatable between a flat part 20 of the bearing part 3 and the cylinder part 11 'of the housing 11 added so that the rotor 1 is guided axially.
  • the rotor 1 On the side opposite the output shaft 14, the rotor 1 is also provided with a radial shoulder 23 which interacts with a sealing surface 24 of the bearing part 3.
  • the outer jacket 8 is rotatably guided between the sealing surfaces 18 and 24.
  • an air outlet duct 26 is provided, the rotor 1 being set in rotation in a manner known per se by the expanding and flowing through compressed air. Due to the centrifugal force, the fins 6 are pressed outwards against the inner surface 7 of the outer casing 8, and the outer casing 8 is rotated in its guide bore 10 by friction.
  • the guide bore 10 is widened on one side by a partial cylindrical surface 27 and the intermediate space thus created serves as an air pocket 28 which is connected to the air inlet duct 25.
  • air and, in particular, the boundary layer adhering to the surface of the outer casing 8 are entrained into the remaining rest of the guide bore 10, so that the air cushion thus formed results in a practically contact-free mounting of the outer casing 8, through which the rotor 1
  • the resulting vibrations are dampened and smooth, wear-free running is achieved.
  • the operation of the vane motor with oil-free compressed air is made possible almost without wear.
  • the bearing part 3 'and the cylinder part 11' of the housing 11 are fixed by a pin 30 projecting into a slot 29 against rotation in their mutual position.
EP90104605A 1989-04-27 1990-03-12 Moteur à palettes à air comprimé Expired - Lifetime EP0394651B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90104605T ATE93009T1 (de) 1989-04-27 1990-03-12 Druckluftlamellenmotor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913908 1989-04-27
DE3913908A DE3913908A1 (de) 1989-04-27 1989-04-27 Druckluftlamellenmotor

Publications (2)

Publication Number Publication Date
EP0394651A1 true EP0394651A1 (fr) 1990-10-31
EP0394651B1 EP0394651B1 (fr) 1993-08-11

Family

ID=6379592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104605A Expired - Lifetime EP0394651B1 (fr) 1989-04-27 1990-03-12 Moteur à palettes à air comprimé

Country Status (5)

Country Link
US (1) US5064361A (fr)
EP (1) EP0394651B1 (fr)
AT (1) ATE93009T1 (fr)
DE (2) DE3913908A1 (fr)
ES (1) ES2041063T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498727A (zh) * 2013-10-21 2014-01-08 宋振才 叶片式发动机

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142952A (en) * 1990-05-21 1992-09-01 Snap-On Tools Corporation Ratchet tool
US5383771A (en) * 1993-12-20 1995-01-24 Snap-On Incorporated Air motor with offset front and rear exhausts
US5664993A (en) * 1995-10-31 1997-09-09 Tmx Engineering & Manufacturing Air bearing for a spin index fixture
USD408243S (en) * 1998-02-23 1999-04-20 S.P. Air Kabusiki Kaisha Pneumatic hand tool
US7108493B2 (en) * 2002-03-27 2006-09-19 Argo-Tech Corporation Variable displacement pump having rotating cam ring
GB2383609B (en) * 2001-10-18 2005-05-11 George Robert Silk Air motor
US7134856B2 (en) * 2002-02-05 2006-11-14 Kmb Feinmechanik Ag Compressed air motor
DE10310863B3 (de) * 2003-03-11 2004-10-28 Schmid & Wezel Gmbh & Co Schleifgerät
US20070166182A1 (en) * 2006-01-19 2007-07-19 Mighty Seven International Co., Ltd. Pneumatic tool
US8839620B2 (en) * 2009-01-13 2014-09-23 Avl Powertrain Engineering, Inc. Sliding vane rotary expander for waste heat recovery system
US8899390B2 (en) 2012-02-14 2014-12-02 C&D Zodiac, Inc. Freewheeling rotary damping mechanism
CN103883356B (zh) * 2013-12-16 2017-02-22 浙江大学 一种叶片气动马达
SG10201609481XA (en) * 2016-11-11 2018-06-28 Sanden Int Singapore Pte Ltd A revolving vane compressor and method of operating and manufacturing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131158A2 (fr) * 1983-06-09 1985-01-16 NIPPON PISTON RING CO., Ltd. Compresseur rotatif
EP0137853A1 (fr) * 1983-02-24 1985-04-24 NIPPON PISTON RING CO., Ltd. Compresseur rotatif du type a ailettes

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1727718A (en) * 1926-05-24 1929-09-10 Owen D Kinsey Grinder
DE491119C (de) * 1928-05-26 1930-02-05 Westfalia A G Maschf Drehkolbenverdichter mit sichelfoermigem Arbeitsraum und radial verschiebbaren Kolben
US2918877A (en) * 1954-07-02 1959-12-29 Woodcock Francis Henry Vane pumps
GB797528A (en) * 1955-03-16 1958-07-02 Nat Res Dev Bearings for rotating shafts which are lubricated by gas
DE1751379C3 (de) * 1967-05-22 1978-09-28 Breinlich, Richard, Dr., 7120 Bietigheim Hochdruck-Umlaufkolbenmaschine
DE2621486A1 (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
JPS59192888A (ja) * 1983-04-14 1984-11-01 Mazda Motor Corp 回転スリ−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
JPS6435094A (en) * 1988-07-15 1989-02-06 Nippon Piston Ring Co Ltd Rotary compressor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137853A1 (fr) * 1983-02-24 1985-04-24 NIPPON PISTON RING CO., Ltd. Compresseur rotatif du type a ailettes
EP0131158A2 (fr) * 1983-06-09 1985-01-16 NIPPON PISTON RING CO., Ltd. Compresseur rotatif

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 128 (M-583)(2575) 22 April 1987, & JP-A-61 268892 (NIPPON PISTON RING CO.LTD.) 28 November 1986, *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 217 (M-828)(3565) 22 Mai 1989, & JP-A-1 35093 (NIPPON PISTON RING CO. LTD.) 06 Februar 1989, *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 217 (M-828)(3565) 22 Mai 1989, & JP-A-1 35094 (NIPPON PISTON RING CO. LTD.) 06 Februar 1989, *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 57 (M-363)(1780) 13 März 1985, & JP-A-59 192888 (MAZDA K.K.) 01 November 1984, *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498727A (zh) * 2013-10-21 2014-01-08 宋振才 叶片式发动机

Also Published As

Publication number Publication date
EP0394651B1 (fr) 1993-08-11
DE3913908A1 (de) 1990-10-31
DE59002250D1 (de) 1993-09-16
ATE93009T1 (de) 1993-08-15
ES2041063T3 (es) 1993-11-01
US5064361A (en) 1991-11-12

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