EP1934481A1 - Pompe a rotor - Google Patents

Pompe a rotor

Info

Publication number
EP1934481A1
EP1934481A1 EP06792219A EP06792219A EP1934481A1 EP 1934481 A1 EP1934481 A1 EP 1934481A1 EP 06792219 A EP06792219 A EP 06792219A EP 06792219 A EP06792219 A EP 06792219A EP 1934481 A1 EP1934481 A1 EP 1934481A1
Authority
EP
European Patent Office
Prior art keywords
wing
rotor
rotor pump
pump according
base body
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.)
Withdrawn
Application number
EP06792219A
Other languages
German (de)
English (en)
Inventor
Willi Schneider
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.)
Joma Polytec Kunststofftechnik GmbH
Original Assignee
Joma Hydromechanic GmbH
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 Joma Hydromechanic GmbH filed Critical Joma Hydromechanic GmbH
Publication of EP1934481A1 publication Critical patent/EP1934481A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F04C18/3441—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 inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—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 inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/21—Manufacture essentially without removing material by casting
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/24—Manufacture essentially without removing material by extrusion
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/001—Radial sealings for working fluid
    • F04C27/003—Radial sealings for working fluid of resilient material
    • 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
    • F05C2201/00—Metals
    • F05C2201/90—Alloys not otherwise provided for
    • F05C2201/903—Aluminium alloy, e.g. AlCuMgPb F34,37
    • 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
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a rotor pump with a pump housing and a rotatably mounted therein rotor, wherein a single wing is slidably mounted with its wing body in the rotor and rests with its wing tips on an inner peripheral surface of the pump housing and defines a suction chamber and a pressure chamber, and the wing a has constant length.
  • a rotor pump with a rotatably mounted therein rotor wherein in the rotor a single wing is slidably mounted.
  • This wing has wing tips which are made of a hard material which is harder than the inner peripheral surface of the pump housing of the rotor pump.
  • These inserts are glued, injected or cast. Due to the hard material of the inserts, the wear occurs mainly on the inner peripheral surface of the pump housing, so that it must be replaced when the wear limit is reached. Usually, the pump is replaced and not repaired, as a repair would be too expensive.
  • the invention has for its object to provide a rotor pump, which is cheaper in case of repair.
  • the wing body made of aluminum or an aluminum alloy and which are provided at its free, the inner circumferential surface facing ends provided wing tips made of plastic.
  • the wing consists of relatively lightweight base materials, namely aluminum or an aluminum alloy for the wing body and plastic for the wing tips. This has the significant advantage that the wing itself has a very low mass inertia and therefore act on the wing tips lower forces. The wing is therefore easier to move back and forth in the rotor and the closure is reduced.
  • the two wing tips have the same cross-sectional shape.
  • This embodiment of the wing tips has the significant advantage that only one form must be stored at wing tips, whereby the storage costs are reduced.
  • the production of such a wing tip is cheaper, since it can be produced in larger quantities.
  • a preferred embodiment provides that the wing tip is positively secured to the wing body.
  • This form-fitting has the significant advantage that no additional tools, such as glue or the like, are needed to secure the wing tip to the wing body.
  • the wing tip can be releasably attached to the wing body or permanently attached thereto.
  • a detachable attachment offers the advantage that an exchange can be carried out without problems. In the case of permanent attachment, the entire wing usually needs to be replaced.
  • a preferred variant of the invention provides that the wing body at its free, the inner peripheral surface facing ends each have at least one, in particular undercut groove and the wing tip is provided with a groove engaging in the spring.
  • Such tongue and groove connections have proven themselves many times and are quick and inexpensive to produce and can be added manually.
  • tongue and groove connections can be made so that they have an interference fit, so that the wing tip is securely attached to the wing body.
  • the tongue and groove connection has a small clearance, so that the wing has a small play compensation in its longitudinal direction.
  • the wing tip on a particular undercut groove and the wing body is provided at its free, the inner peripheral surface facing ends in each case with a groove engaging in the groove. Also, such tongue and groove connection has the above advantages and properties.
  • An optimum sealing of the connection of wing tip and wing body is effected in that the axial direction of the groove and the spring is parallel to the direction of the axis of rotation of the wing.
  • the gap between the groove and the spring is open only in the direction of the floor or the ceiling of the suction chamber or pressure chamber, so that the possibility exists, by suitable sealing measures, such as lubricating oil, sealing washers or sealing lips, which are provided directly on the wing and, where appropriate revolve with the wing, the wing close in the To guide the pump housing.
  • suitable sealing measures such as lubricating oil, sealing washers or sealing lips, which are provided directly on the wing and, where appropriate revolve with the wing, the wing close in the To guide the pump housing.
  • the tongue and groove connection forms a seal.
  • the spring is parallel to the direction of the axis of rotation of the wing in the groove, in particular manually inserted. Even with a press fit in this case there is the possibility to replace the wing tip, since the spring, for example with a suitable tool, can be pressed out of the groove.
  • the wing tip is molded onto the wing base body.
  • This embodiment has the advantage that it is tight and therefore can be dispensed with special seals.
  • dimensional variations of the base body in particular length tolerances, can be easily compensated for by spraying the wing tips to the base body, without the wing tip having to be reworked after the injection process. A particularly precise production of the free ends of the wing body is therefore not required.
  • the wing body is inserted into the injection mold and provided with the wing tips.
  • the wing body may be an extruded profile, so that this only has to be cut to the desired wing width. But there is also the possibility that the wing body is a die-cast part, to which the wing tip is formed.
  • the wing tip may also be a section of an extruded plastic profile which is adapted to the width of the wing.
  • Figure 1 is a perspective view of the rotor pump with inserted rotor and vanes
  • Figure 2 is a perspective view of a wing with attached wing tips
  • Figure 3 is a perspective view of a free end of the wing body with spaced apart wing tip.
  • reference numeral 10 denotes a rotor pump, wherein the pump housing 12 is shown without housing cover.
  • the pump housing 12 has a suction port 14, which opens into an interior 16.
  • this interior 16 is a generally designated 18 rotor, in which a wing 20 is mounted orthogonal to the axis of rotation 21 slidably.
  • the wing 20 divides the working space 22 formed by the inner space 18 into a suction space 24 and a pressure space 26. In this case, the wing 20 rests with its two wing tips 28 against an inner peripheral surface 30 surrounding the working space 22.
  • the wing 20 is formed by a wing base body 32 and the two wing tips 28.
  • the wing body 32 is made of aluminum and is a diecast part or consists of one
  • the wing tip 28 is made of plastic and is injection molded or part of an extruded plastic profile.
  • the free end 34 of the wing base body 32 has a groove 36 running parallel to the axis of rotation 21 and provided with two undercuts 38. Accordingly, the wing tip 28 has a spring 40 which widens in the direction of its free end and thus fits positively into the groove 36. The blade tip 28 is inserted either parallel to the rotation axis 21 in the groove 36 or the blade tip 28 is molded onto the free end 34 of the wing base body 32.
  • the rotor pump 10 according to the invention has the significant advantage that when the wear limit is reached, only the wing 20 as such or else only the wing tips 28 have to be exchanged. This can be done manually or by machine and is feasible in a short time and inexpensively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

La présente invention concerne une pompe à rotor comprenant un carter de pompe et un rotor (20) monté rotatif dans ce carter de pompe. Une ailette est montée mobile avec son corps de base d'ailette (32) dans le rotor et repose avec son bout d'ailette (28) sur une surface périphérique interne du carter de pompe, définissant ainsi une chambre d'aspiration et une chambre de refoulement. Ladite ailette présente une longueur constante. Le corps de base d'ailette est constitué d'aluminium ou d'un alliage d'aluminium et les bouts d'ailette (28) situés à ses extrémités libres faisant face à la surface périphérique interne sont constitués de matière plastique.
EP06792219A 2005-10-13 2006-09-22 Pompe a rotor Withdrawn EP1934481A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510050001 DE102005050001A1 (de) 2005-10-13 2005-10-13 Rotorpumpe
PCT/EP2006/009213 WO2007042135A1 (fr) 2005-10-13 2006-09-22 Pompe a rotor

Publications (1)

Publication Number Publication Date
EP1934481A1 true EP1934481A1 (fr) 2008-06-25

Family

ID=37402543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06792219A Withdrawn EP1934481A1 (fr) 2005-10-13 2006-09-22 Pompe a rotor

Country Status (3)

Country Link
EP (1) EP1934481A1 (fr)
DE (1) DE102005050001A1 (fr)
WO (1) WO2007042135A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015213098B4 (de) * 2015-07-13 2017-05-04 Joma-Polytec Gmbh Flügel für eine Flügelzellenpumpe und Flügelzellenpumpe
CN105156324B (zh) * 2015-09-11 2018-09-04 裕克施乐塑料制品（太仓）有限公司 一种新型塑料真空泵叶片及真空泵

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052169A (fr) * 1900-01-01
GB191306822A (en) * 1913-03-19 1913-10-09 Jacob Christ Hansen-Ellehammer Improvements in Rotary Pumps.
JPH02104996A (ja) * 1988-10-14 1990-04-17 Furukawa Electric Co Ltd:The コンプレッサー用複合型ベーン及びその製造方法
JPH03151589A (ja) * 1989-11-08 1991-06-27 Kubota Corp コンプレッサー用複合ベーンとその製造方法
JPH03156189A (ja) * 1989-11-14 1991-07-04 Sanyo Electric Co Ltd 密閉型回転圧縮機及びその摺動ベーンの製造方法
US5560741A (en) * 1994-06-28 1996-10-01 Edwards; Thomas C. Non-contact vane-type fluid displacement machine with rotor and vane positioning
AU2504301A (en) * 1999-12-23 2001-07-09 Luk Automobiltechnik Gmbh And Co. Kg Vacuum pump
EP1424495A3 (fr) * 2000-03-15 2004-06-23 Joma-Hydromechanic GmbH Pompe à palettes
DE10046697A1 (de) * 2000-09-21 2002-04-11 Bosch Gmbh Robert Flügel aus Kunststoff für eine Flügelzellen-Vakuumpumpe
WO2004074687A2 (fr) * 2003-02-20 2004-09-02 Luk Automobiltechnik Gmbh & Co. Kg Pompe a vide
DE50300812D1 (de) * 2003-04-24 2005-08-25 Joma Hydromechanic Gmbh Flügelzellenpumpe
DE102004001840B3 (de) * 2004-01-07 2005-05-25 Joma-Hydromechanic Gmbh Verdrängerpumpe
DE202004001628U1 (de) * 2004-02-04 2004-05-06 G.A. Kiesel Gmbh Flügelrad für eine Impellerpumpe und Flügeleinheit für ein derartiges Flügelrad
DE102004053521A1 (de) * 2004-10-29 2006-05-11 Joma-Hydromechanic Gmbh Flügel für eine Rotorpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007042135A1 *

Also Published As

Publication number Publication date
WO2007042135A1 (fr) 2007-04-19
DE102005050001A1 (de) 2007-04-19

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 20070120

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Designated state(s): DE FR GB

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Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20090316

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: JOMA-POLYTEC KUNSTSTOFFTECHNIK GMBH

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 20100429