EP0821761B1 - Pompe rotative a palette unique elastique - Google Patents

Pompe rotative a palette unique elastique Download PDF

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Publication number
EP0821761B1
EP0821761B1 EP96907424A EP96907424A EP0821761B1 EP 0821761 B1 EP0821761 B1 EP 0821761B1 EP 96907424 A EP96907424 A EP 96907424A EP 96907424 A EP96907424 A EP 96907424A EP 0821761 B1 EP0821761 B1 EP 0821761B1
Authority
EP
European Patent Office
Prior art keywords
rotor
rotary pump
housing
vane
pump 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.)
Expired - Lifetime
Application number
EP96907424A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0821761A1 (fr
Inventor
Leonardo Cadeddu
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 Sistemi Frenanti SpA
Original Assignee
Robert Bosch Sistemi Frenanti SpA
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 Robert Bosch Sistemi Frenanti SpA filed Critical Robert Bosch Sistemi Frenanti SpA
Publication of EP0821761A1 publication Critical patent/EP0821761A1/fr
Application granted granted Critical
Publication of EP0821761B1 publication Critical patent/EP0821761B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0845—Vane tracking; control therefor by mechanical means comprising elastic means, e.g. springs
    • 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

Definitions

  • the present invention relates to a rotary pump comprising a stator pierced with a housing delimited by a cylindrical side wall, a cylindrical rotor, disposed inside the housing, tangent to the latter and capable of being rotated about an axis eccentric with respect to this housing, and a pallet diametrically crossing the rotor in order to be integral in rotation and having two opposite edges, bearing on the side wall of the housing and separated from each other by a distance subject to variations during rotation of the rotor, this pallet itself comprising elastic means capable of absorbing these variations.
  • Rotary pumps have been known and used for many decades for many multiple applications, and a pump of the type defined above is found for example described in patent document FR-2 256 683.
  • pumps of this type deliver a flow rate. which depends in particular on the eccentricity of the rotor relative to the stator, the flow rate being all the more greater than this eccentricity is high.
  • the aim of the present invention is to propose a vacuum pump of the type rotary, in which these difficulties are resolved
  • the pump of the invention is essentially characterized in that the pallet takes at least partially in the form of a sheet of material offering elastic resistance to bending, and in that the elastic compensation means comprise at least one undulation of this sheet.
  • the rotor is hollow and has two diametrically oriented guide slots and crossed by the pallet, the corrugation of the sheet being housed inside the rotor.
  • the opposite edges of the pallet can be formed by folds of the sheet on itself.
  • the drive of the pump of the invention is for example ensured by the rotation of a drive shaft coaxially integral with the rotor, passing through an axial wall of the stator, and having a training relief accessible outside the housing.
  • the invention relates to a rotary pump which can be used as a pneumatic vacuum pump, essentially comprising a stator 1, a rotor 2, and a single pallet 3.
  • the stator 1 is pierced with a housing 11 delimited by a cylindrical side wall 10 and by two axial walls 111, 112, an air intake inlet 12 and an air outlet outlet 13 opening into the housing 11.
  • the rotor 2 is itself cylindrical, disposed inside the housing 11, in tangent contact and waterproof with the latter, and integral with a coaxial drive piece 23 passing through the wall axial 111 of the stator and having a driving relief 24 accessible outside the housing, so as to allow the rotor to rotate about an X axis, offset from housing 11.
  • the rotor is guided on the outer edges 25 and 26 of its periphery by bearings complementary 15, 16 of the stator.
  • the pallet 3 passes diametrically through the rotor so as to be integral in rotation with the latter, and has two opposite edges 31 and 32, bearing on the side wall 110 of the housing 11 and separated from each other by a distance subject to variations when the rotor 1 rotates.
  • the vane 3 of the pump according to the invention takes at least partially in the form of a sheet made of a material offering elastic resistance to bending, for example a spring steel, this sheet further forming at least one ripple, such as 33, 34.
  • the rotor 1 is hollow and has two guide slots 21, 22 oriented diametrically and crossed by the pallet 3, the corrugated part 33, 34 of this pallet being housed inside the rotor.
  • the opposite edges 31, 32 of the pallet can be all simply formed by folds of the sheet of which the pallet is made up, each of these folds extending to the inside of the corresponding guide slot 21, 22 and delimiting a free space 310, 320 capable of constituting a labyrinthine barrier to differential pressure to which this fold is subjected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
EP96907424A 1995-04-19 1996-03-11 Pompe rotative a palette unique elastique Expired - Lifetime EP0821761B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT95TO000310A IT1279128B1 (it) 1995-04-19 1995-04-19 Pompa rotativa a paletta unica elastica
ITTO950310 1995-04-19
PCT/EP1996/001031 WO1996033339A1 (fr) 1995-04-19 1996-03-11 Pompe rotative a palette unique elastique

Publications (2)

Publication Number Publication Date
EP0821761A1 EP0821761A1 (fr) 1998-02-04
EP0821761B1 true EP0821761B1 (fr) 1998-09-30

Family

ID=11413508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96907424A Expired - Lifetime EP0821761B1 (fr) 1995-04-19 1996-03-11 Pompe rotative a palette unique elastique

Country Status (6)

Country Link
US (1) US5709540A (it)
EP (1) EP0821761B1 (it)
DE (1) DE69600731T2 (it)
ES (1) ES2122804T3 (it)
IT (1) IT1279128B1 (it)
WO (1) WO1996033339A1 (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20010521A1 (it) * 2001-06-01 2002-12-01 Vhit Spa Rotore soggetto a ridotta usura, e pompa comprendente tale rotore.
AU2003232685A1 (en) * 2003-06-16 2005-01-04 Lg Electronics Inc. Compressor
ITTO20040530A1 (it) * 2004-07-30 2004-10-30 Vhit Spa Dispositivo per la disattivazione di un apparecchio nei periodi in cui la sua funzione non e' necessaria
CN102536832A (zh) * 2012-03-21 2012-07-04 重庆云海机械制造有限公司 真空泵

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728620A (en) * 1929-09-17 t tmt t
US1421766A (en) * 1919-01-11 1922-07-04 Willys Overland Co Rotary pump
US2077394A (en) * 1934-05-28 1937-04-20 Arthur C Johnson Liquid sealed pump
US2436876A (en) * 1943-07-29 1948-03-02 Alfred L Stamsvik Rotary sliding vane pump structure
DE2326508C3 (de) * 1973-05-24 1981-06-19 Leybold-Heraeus GmbH, 5000 Köln Drehschieberpumpe oder -verdichter
FR2256683A5 (en) * 1973-12-28 1975-07-25 Blachere Et Cie Comptoirs Indl Rotary pump esp. for pumping wine - after crushing grapes, with simultaneous suction and compression
SU1543124A1 (ru) * 1987-08-17 1990-02-15 Semen G Appel Ротационный вакуумный насос

Also Published As

Publication number Publication date
DE69600731D1 (de) 1998-11-05
WO1996033339A1 (fr) 1996-10-24
EP0821761A1 (fr) 1998-02-04
ES2122804T3 (es) 1998-12-16
ITTO950310A1 (it) 1996-10-19
DE69600731T2 (de) 1999-03-04
IT1279128B1 (it) 1997-12-04
ITTO950310A0 (it) 1995-04-19
US5709540A (en) 1998-01-20

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