EP1447566A1 - Machine à pistons rotatifs avec filtre coalescent rotatif - Google Patents

Machine à pistons rotatifs avec filtre coalescent rotatif Download PDF

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Publication number
EP1447566A1
EP1447566A1 EP04002066A EP04002066A EP1447566A1 EP 1447566 A1 EP1447566 A1 EP 1447566A1 EP 04002066 A EP04002066 A EP 04002066A EP 04002066 A EP04002066 A EP 04002066A EP 1447566 A1 EP1447566 A1 EP 1447566A1
Authority
EP
European Patent Office
Prior art keywords
centrifuge
oil
piston machine
rotary piston
rotary
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Withdrawn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
EP04002066A
Other languages
German (de)
English (en)
Inventor
Günter Dipl.-Ing. Seidel
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.)
Aerzener Maschinenfabrik GmbH
Original Assignee
Aerzener Maschinenfabrik 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 Aerzener Maschinenfabrik GmbH filed Critical Aerzener Maschinenfabrik GmbH
Publication of EP1447566A1 publication Critical patent/EP1447566A1/fr
Withdrawn legal-status Critical Current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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/023—Lubricant distribution through a hollow driving shaft
    • 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
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009—Shaft sealings specially adapted for pumps
    • 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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • 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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps

Definitions

  • the present invention relates to a Rotary lobe machine comprising at least two rotary lobes are each mounted on a shaft, at least of which one can be driven in the direction of rotation, a housing in which the Shafts are rotatably mounted and an oil space has, and a centrifuge for generating a negative pressure in the oil room.
  • Rotary piston machines of the type mentioned are in the state generally known in the art. With such Rotary lobe machines are the rotary lobes in a delivery chamber arranged, which must be sealed against an oil space. The shaft of a rotary piston is extended in such a way that it leads through the oil room to the atmosphere and the Drive of the rotary lobe machine is used.
  • Oil seals are usually located around a Prevent oil from entering the delivery chamber.
  • the Seals are especially for gaseous fluids mostly formed in a floating version because of the pressure of the pumping chamber in overpressure operation when the Counteracts oil from the oil room.
  • Another sealing point is located in the passage area the drive shaft from the oil room to the atmosphere where there is a leak must be prevented by oil. It should be noted that in Oil space usually a certain overpressure (compared to atmospheric pressure).
  • centrifuges carry the Release air from the oil space into the environment as a result of in the oil particles contained in the air to oil loss what on the one hand increases the maintenance effort of the rotary lobe machine and on the other hand affects the environment. Furthermore is the provision of a separate electric motor from constructive as well as undesirable from an economic perspective.
  • It is an object of the present invention Provide generic rotary lobe machine, the one Oil leaks from the oil room into other machine areas or the atmosphere in a simple and effective way prevented.
  • the present invention is based on the idea of a To achieve pressure drops towards the oil space by the Centrifuge to create a vacuum in the oil room by at least one of the shafts of the rotary lobe machine, especially the drive shaft, and not by one complex additional device or the like driven is.
  • centrifuges can be used significantly smaller diameter can be used, which the Construction of the machine further simplified. Not least result from all of these achieved with the invention Advantages also considerable economic advantages.
  • the centrifuge has at least one shaft for example by means of a gear or the like can be driven, according to a further development present invention preferred that the centrifuge on one of the shafts is mounted. This is due to the high Speeds of the shafts of the rotary piston machine enables and leads to a very simple and inexpensive Construction of the rotary lobe machine according to the invention. there it is particularly preferred that the centrifuge be on the shaft that is mounted with the highest speed rotates to make the centrifuge as effective as possible with the advantages mentioned above.
  • Centrifuge formed by an impeller that is porous Has filter section the centrifuge fulfills a dual function by: on the one hand to create a negative pressure in the oil space and on the other hand for the conversion of those passing through the centrifuge Oil particles in oil droplets is used. More specifically, it sucks Centrifuge oil mist, i.e. an oil-air mixture from the oil room and pushes it after passing through the centrifuge out again. The oil mist passes through the porous structure of the filter section, which leads to the oil particles of the Oil mist can be deposited in the pores.
  • Centrifuge oil mist i.e. an oil-air mixture from the oil room and pushes it after passing through the centrifuge out again.
  • the oil mist passes through the porous structure of the filter section, which leads to the oil particles of the Oil mist can be deposited in the pores.
  • the filter section consists of metal foam, in particular on the material Nickel or alloys such as nickel / chrome or Nickel / chrome / aluminum based. So the inventors found that this material is highly effective for Is droplet formation, has a high durability and is economically applicable. Particularly cheap The inventors have properties in one Void fraction of the porous filter section of at least 95% found. In addition, it is according to the invention preferred that the porous filter section have a very high Has tensile strength, especially around a reliable one and ensure that the centrifuge operates continuously.
  • the porous Filter section is a filter ring that is on an outer Circumference of the impeller is arranged.
  • the rotary lobes in a delivery chamber are arranged, opposite the oil space and / or the Atmosphere using at least one labyrinth seal each Shaft is sealed.
  • a labyrinth seal i.e. a contactless seal
  • the at least one Shaft driven centrifuge has a sufficient pressure drop generated between the oil space and the delivery chamber.
  • hereby can on the contact seals of the prior art can be dispensed with, and it can be wear-resistant and permanent, non-contact labyrinth seals are used come. This not only improves the durability of the entire rotary piston machine improved, but it will be also significantly higher speeds than previous ones Rotary piston machines possible, for example in the Order of magnitude of 24,000 rpm or higher.
  • this concept also applies to this trained that the oil room versus the atmosphere is sealed by means of at least one labyrinth seal.
  • the housing appropriate facilities, in particular bores, which oil from the Centrifuge and / or the demister in the on the suction side of the Return the centrifuge to the oil chamber.
  • centrifuge according to the invention with any Speeds of the rotary lobe machine used advantageously , it has been shown that an operating speed of the Centrifuge of at least 6,000 rpm, preferably at least 10,000 rpm is particularly advantageous.
  • Fig. 1 shows a schematic sectional view of a first preferred embodiment of the invention Rotary engine.
  • the rotary lobe machine shown in Fig. 1 1 has two rotary pistons 2, 4, each on a shaft 2 ', 4' are mounted.
  • the Rotary piston machine 1 a housing 6, in which the shafts 2 ', 4 'are each rotatably supported by means of roller bearings 3.
  • both shafts 2 ', 4' are each with one Provide gear 28 which are engaged with each other so that a drive torque applied to the shaft 2 ' is transmitted to the shaft 4 '.
  • the rotary pistons 2, 4 are located together in one Delivery space 16, through which a medium during the Operation of the rotary lobe machine happens. Furthermore is an oil chamber 8 is provided in the housing 6, in which the gears 28 and the rolling bearings 3 for lubrication purposes are located.
  • the rotary piston machine 1 has a centrifuge 10 on, which is mounted on the shaft 2, on the Drive end opposite end of the shaft 2 '.
  • the Centrifuge 10 is formed by an impeller 12, which as Basic body has a disc with fan ribs.
  • the impeller 12 has a porous one Filter section 14 in the form of a filter ring on an outer periphery of the impeller 12 is arranged.
  • the Filter section 14 is in the present Embodiment made of metal foam, which has a void portion of at least 95% and has a high tensile strength.
  • Such metal foams preferably on the material Nickel or alloys such as nickel / chrome or Nickel / chrome / aluminum based, for example at Recemat International BV, 2920 AC Krimpen aan den Ijssel, Netherlands in various embodiments available.
  • Nickel or alloys such as nickel / chrome or Nickel / chrome / aluminum based, for example at Recemat International BV, 2920 AC Krimpen aan den Ijssel, Netherlands in various embodiments available.
  • metal foams have proven to be particularly advantageous, also other suitable materials than porous filter sections can be used.
  • the oil space 8 is relative to the atmosphere sealed at least one labyrinth seal, which in the Area of the drive shaft 2 ′ emerging from the housing 6 faces the shaft 2 ', so that the oil leaks out the oil space 8 is avoided in the atmosphere.
  • the Rotary piston machine 1 On the exit side of the centrifuge 10, the Rotary piston machine 1 also has a demister 24.
  • Fig. 2 shows a partial sectional view of a Centrifuge 10 according to the invention, which compared to that in Fig. 1st centrifuge shown is slightly modified.
  • the centrifuge 10 in a separate housing section 6 'mounted next to the Centrifuge 10 also receives the demister 24.
  • the Demister 24 is arranged in Fig. 2 immediately after the centrifuge 10, and enclosed by two grids 24 '. Below the Centrifuge 10 and the demister 24 are each a bore 26 provided for the return of condensed oil particles serves in the oil space 8, for example not in Fig. 2 shown lines or channels.
  • the operation of the rotary lobe machine according to the invention takes place as follows.
  • the centrifuge also rotates together with the shaft 2 ' 10 and continuously sucks oil mist out of the oil space 8, i.e. an air-oil mixture. Due to the suction effect of the Centrifuge 10 is in the oil chamber 8 compared to Atmosphere creates a vacuum that works in conjunction with the labyrinth seals 18, 20 and 22 leak oil from the oil chamber 8 into the delivery chamber 16 or the atmosphere prevented.
  • the oil mist entering the centrifuge 10 is due to radial centrifugal force in the centrifuge flung outward to then pass through the porous Section 14 of the impeller 10 to pass.
  • the Oil mist in the pores of the porous section 14 dejected.
  • the downed fog is through the Centrifugal force led outward, being in the pores Form drops on the outer diameter of the centrifuge 10 or the porous filter section 14 are thrown off.
  • the droplets thrown off the centrifuge can then for example using gravity in the oil space 8 are returned, for example through the bores 26 and corresponding lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Centrifugal Separators (AREA)
EP04002066A 2003-02-17 2004-01-30 Machine à pistons rotatifs avec filtre coalescent rotatif Withdrawn EP1447566A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10306547 2003-02-17
DE2003106547 DE10306547B4 (de) 2003-02-17 2003-02-17 Drehkolbenmaschine

Publications (1)

Publication Number Publication Date
EP1447566A1 true EP1447566A1 (fr) 2004-08-18

Family

ID=32668094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04002066A Withdrawn EP1447566A1 (fr) 2003-02-17 2004-01-30 Machine à pistons rotatifs avec filtre coalescent rotatif

Country Status (2)

Country Link
EP (1) EP1447566A1 (fr)
DE (1) DE10306547B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109958626A (zh) * 2019-04-04 2019-07-02 烟台菱辰能源有限公司 空气压缩机的润滑油防泄漏装置
WO2019197919A3 (fr) * 2018-04-11 2020-03-12 Atlas Copco Airpower, Naamloze Vennootschap Installation de compresseur à injection de fluide
DE102021116925A1 (de) 2021-06-30 2023-01-05 Kaeser Kompressoren Se Trockenverdichtender Verdichter und Verfahren zur Ölabscheidung für einen trockenverdichtenden Verdichter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049401A (en) * 1975-02-10 1977-09-20 Rolls-Royce (1971) Limited Apparatus for separating suspensions of liquids in gas
JPS6014920A (ja) * 1983-07-08 1985-01-25 Mitsubishi Electric Corp 気液分離装置
JPS60101294A (ja) * 1983-11-09 1985-06-05 Hitachi Ltd スクリユ−流体機械の呼吸栓
DE3501852A1 (de) * 1984-02-02 1985-08-14 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Fluegelzellen-vakuumpumpe
US4632650A (en) * 1983-12-13 1986-12-30 Leybold-Heraeus Gmbh Vacuum pump having an evacuated gear chamber
EP0649997A1 (fr) * 1993-10-01 1995-04-26 The BOC Group plc Méthodes et appareil de séparation gaz-liquide
EP0855514A1 (fr) * 1997-01-15 1998-07-29 N.V. Atlas Copco Airpower Compresseur rotatif à vis avec injection d'huile et filtre

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1158976A (fr) * 1956-10-04 1958-06-20 Cie Constr Gros Mat Electromec Machine rotative, en particulier pour la compression de gaz ou vapeurs
DE3047699A1 (de) * 1980-12-18 1982-07-01 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Waelzkolbenpumpe mit druckausgleichskammer
JPS62199992A (ja) * 1986-02-28 1987-09-03 Hitachi Ltd 密閉形ロ−タリ圧縮機
FR2638788B1 (fr) * 1988-11-07 1994-01-28 Alcatel Cit Pompe a vide du type roots multietage
US5281116A (en) * 1993-01-29 1994-01-25 Eaton Corporation Supercharger vent

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049401A (en) * 1975-02-10 1977-09-20 Rolls-Royce (1971) Limited Apparatus for separating suspensions of liquids in gas
JPS6014920A (ja) * 1983-07-08 1985-01-25 Mitsubishi Electric Corp 気液分離装置
JPS60101294A (ja) * 1983-11-09 1985-06-05 Hitachi Ltd スクリユ−流体機械の呼吸栓
US4632650A (en) * 1983-12-13 1986-12-30 Leybold-Heraeus Gmbh Vacuum pump having an evacuated gear chamber
DE3501852A1 (de) * 1984-02-02 1985-08-14 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Fluegelzellen-vakuumpumpe
EP0649997A1 (fr) * 1993-10-01 1995-04-26 The BOC Group plc Méthodes et appareil de séparation gaz-liquide
EP0855514A1 (fr) * 1997-01-15 1998-07-29 N.V. Atlas Copco Airpower Compresseur rotatif à vis avec injection d'huile et filtre

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0091, no. 25 (C - 283) 30 May 1985 (1985-05-30) *
PATENT ABSTRACTS OF JAPAN vol. 0092, no. 49 (M - 419) 5 October 1985 (1985-10-05) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019197919A3 (fr) * 2018-04-11 2020-03-12 Atlas Copco Airpower, Naamloze Vennootschap Installation de compresseur à injection de fluide
TWI699481B (zh) * 2018-04-11 2020-07-21 比利時商亞特拉斯可波克氣動股份有限公司 流體注射式壓縮機設備
JP2021520469A (ja) * 2018-04-11 2021-08-19 アトラス コプコ エアーパワー, ナームローゼ フェンノートシャップATLAS COPCO AIRPOWER, naamloze vennootschap 流体注入式圧縮装置
US11841015B2 (en) 2018-04-11 2023-12-12 Atlas Copco Airpower, Naamloze Vennootschap Fluid-injected compressor installation
CN109958626A (zh) * 2019-04-04 2019-07-02 烟台菱辰能源有限公司 空气压缩机的润滑油防泄漏装置
DE102021116925A1 (de) 2021-06-30 2023-01-05 Kaeser Kompressoren Se Trockenverdichtender Verdichter und Verfahren zur Ölabscheidung für einen trockenverdichtenden Verdichter
WO2023274919A1 (fr) 2021-06-30 2023-01-05 Kaeser Kompressoren Se Compresseur à compression à sec et procédé de séparation d'huile pour un compresseur à compression à sec

Also Published As

Publication number Publication date
DE10306547A1 (de) 2004-09-02
DE10306547B4 (de) 2005-08-04

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