WO2020173619A1 - Palier de butée à feuilles - Google Patents

Palier de butée à feuilles Download PDF

Info

Publication number
WO2020173619A1
WO2020173619A1 PCT/EP2020/051357 EP2020051357W WO2020173619A1 WO 2020173619 A1 WO2020173619 A1 WO 2020173619A1 EP 2020051357 W EP2020051357 W EP 2020051357W WO 2020173619 A1 WO2020173619 A1 WO 2020173619A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
axial
bearing
upper film
groove structure
Prior art date
Application number
PCT/EP2020/051357
Other languages
German (de)
English (en)
Inventor
Felix WIEDMANN
Felix FOERSTER
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2020173619A1 publication Critical patent/WO2020173619A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/042—Sliding-contact bearings for exclusively rotary movement for axial load only with flexible leaves to create hydrodynamic wedge, e.g. axial foil bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/045—Sliding-contact bearings for exclusively rotary movement for axial load only with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F16C2220/68—Shaping by removing material, e.g. machining by electrical discharge or electrochemical machining

Definitions

  • the invention relates to an axial film bearing with an upper film, the one
  • Opposite surface is facing.
  • a flexible film fluid thrust bearing with a plate element which has an aerodynamic surface member with an outer ring and an annular aerodynamic surface, which has several segments with an outer diameter and an inner diameter, which within the outer Annularly supported by a plurality of forwardly inclined tracks, the segments having steeply inclined grooves or steps which function as diverging wedge channels and gradually converging annular wedge channels having flat ridges and ramps.
  • a thrust bearing with two mutually rotatable surfaces which bearing contains two groove patterns that generate opposite pressures when the surfaces move relative to one another in a means that is in operation between the two surfaces occurring gap is present, the geometry of the groove pattern is chosen such that with only one specific direction of rotation one pattern provides a positive load-bearing capacity, which is strongly dependent on the height of the gap, and high rigidity, and the other pattern, whose grooves are deeper than those of the former Pattern, an only slightly gap-dependent negative load-bearing capacity and a low rigidity, this and that in such a way that at a certain gap height the sum of the two load-bearing forces is zero and the bearing has a high positive rigidity. Disclosure of the invention
  • the object of the invention is to provide an axial foil bearing with an upper foil which faces a counter surface, in particular functionally and / or
  • Spiral groove structure used in an axial foil bearing on the one hand to achieve a high specific load capacity, and on the other hand to enable greater tolerances.
  • Conventional film bearings have a rather lower specific load-bearing capacity, but they have the advantage of being relatively insensitive to tolerances, since the preferably flexible films can compensate for inconsistencies.
  • the top film of conventional film bearings is usually provided with a sliding layer to ensure wear-free operation when starting and stopping.
  • the spiral groove structure enables longer service lives with the stressed axial foil bearing.
  • the upper film is attached, for example, to a housing body and is equipped with a supporting ring surface that faces the opposite surface. During operation of the axial foil bearing, a supporting fluid film forms between the supporting ring surface of the upper foil and the counter surface.
  • the spiral groove structure provides the advantage, among other things, that an embossing process to represent the rigid edges during the manufacture of the upper film can be completely dispensed with.
  • the claimed upper film can be produced in the same way or similar to conventional upper films, for example by conventional EDM processes or by chemical etching.
  • the axial foil bearing is also known as an aerodynamic slide bearing. To lubricate the
  • Aerodynamic plain bearing a gaseous fluid, in particular air
  • the axial foil bearing or aerodynamic sliding bearing is therefore also referred to as an air bearing.
  • the axial foil bearing advantageously comprises more than one foil.
  • the axial film bearing comprises at least one upper film and at least one lower film, which is arranged between the upper film and a housing body.
  • the top film is also known as a top foil.
  • the lower foil is also known as a beam or bump foil.
  • a preferred embodiment of the axial foil bearing is characterized in that the spiral groove structure is provided in the upper foil. This results in a function-optimized axial foil bearing with a higher specific load capacity and at the same time in a simple manner
  • the upper film comprises at least one load-bearing area in which the spiral groove structure is arranged.
  • the spiral groove structure advantageously comprises spiral grooves that are as or similar to known ones
  • Thrust bearings are designed and arranged.
  • the spiral groove structure can advantageously be produced in the upper film using processes such as those already used for the production of conventional upper films.
  • the load-bearing area of the upper foil is connected to a retaining ring by retaining webs.
  • the retaining ring is advantageously used to attach the upper film to a housing body.
  • the retaining ring is provided, for example, with through holes which are used to pass through fastening means with which the upper film is fastened to the housing body.
  • the retaining ring is advantageously not provided with spiral grooves and is arranged radially outside the load-bearing area.
  • the retaining ring is preferably connected in one piece to the supporting area via the retaining webs. This further simplifies the manufacture of the upper film.
  • the spiral groove structure comprises spiral grooves, which by a Run out of inner ring of top film.
  • the inner ring of the upper film is advantageously arranged concentrically to the retaining ring.
  • the inner ring advantageously has a flat surface.
  • the spiral grooves advantageously extend to an outer diameter of the supporting ring surface of the upper film.
  • the outer diameter of the supporting ring surface is advantageously smaller than an inner diameter of the retaining ring. This creates an annular
  • the retaining ring of the upper foil is attached to a housing body.
  • the retaining ring has the shape of a circular ring with through holes, for example. The through holes are used for positioning and / or for fastening the retaining ring to the housing body.
  • the retaining ring is advantageously connected in one piece to the supporting annular surface of the upper film via the retaining webs.
  • spiral groove structure is provided in the counter surface.
  • the spiral groove structure can be provided both in the opposite surface and in the upper film.
  • the upper foil has a flat and / or planar surface.
  • the upper film is particularly advantageously provided with an embossing-free surface. The combination of the spiral groove structure in the opposing surface with the embossing-free surface of the upper film has proven to increase the specific load-bearing capacity required at the same time
  • Spiral groove structure are advantageously not influenced by wear of a sliding layer that is provided on the upper film.
  • spiral groove structure comprises spiral grooves which are open radially on the outside. This improves the formation of a supporting fluid film between the upper film and the opposing surface.
  • Another preferred exemplary embodiment of the axial film bearing is characterized in that the upper film is combined with a lower film which has spring properties.
  • the lower film is advantageous with a
  • the spring device is advantageously integrated into the lower film, for example in the form of a large number of spring tabs.
  • the invention also relates to a compressor or
  • Compressor with a previously described axial foil bearing.
  • the compressor or compressor is preferably used in a fuel cell system.
  • FIG. 1 shows an upper film of an axial film bearing with a spiral groove structure
  • FIG. 2 shows an axial foil bearing with an upper foil which faces a mating surface which has a spiral groove structure, in a longitudinal section;
  • FIG. 3 shows a cross section through a shaft of the axial foil bearing from FIG. 2 with a view of the spiral groove structure in the mating surface; and
  • FIG. 4 shows a partial section in the circumferential direction through an axial film bearing with a lower film and an upper film.
  • FIG. 4 shows an axial foil bearing 1 with a housing 2 and a rotor 3 in a partial section running in the circumferential direction.
  • An arrow 4 indicates that the rotor 3 rotates relative to the housing 2 when the axial foil bearing 1 is in operation.
  • the axial film bearing 1 comprises an upper film 5 and a lower film 6.
  • the upper film 5 is also referred to as a top film.
  • the lower film 6 is also referred to as a beam or bump film and, as can be seen in FIG. 4, is arranged between the housing 2 and the upper film 5.
  • the upper film 5 and a counter surface 8 of the rotor 3 delimit a bearing gap 7, which tapers from left to right in FIG. 4.
  • Figure 1 is an embodiment of the upper film 5 from Figure 4 in the
  • the upper film 5 comprises a load-bearing area 10 with a load-bearing annular surface 11 and a retaining ring 12.
  • Ring surface 11 is also referred to as a supporting surface ring.
  • the surface ring 11 comprises an inner diameter 14 and an outer diameter 15.
  • the retaining ring 12 comprises an inner diameter 16 and an outer diameter 17.
  • the inner diameter 16 of the retaining ring 12 is larger than that
  • Through holes 19 are used, for example, to position and / or fasten the upper film 5.
  • pins or projections which engage in some of the through holes 19 are used to position the upper film 5.
  • Fastening means such as, for example, are used to fasten the upper film 5
  • a relative rotation between the upper film 5 and a rotor (3 in FIG. 4) not shown in FIG. 1 is indicated by arrows 20 in FIG.
  • the upper film 5 in FIG. 1 comprises the load-bearing area 10, which serves to represent the load-bearing fluid film indicated by 9 in FIG. 4 in the axial film bearing.
  • the load-bearing region 10 comprises an inner ring 23 with the inner diameter 14.
  • the inner ring 23 is surrounded by the load-bearing annular surface 11, which has the outer diameter 15.
  • the supporting ring surface 11 of the upper film 5 is equipped with a total of twelve spiral grooves 21 which represent a spiral groove structure 22.
  • the spiral grooves 21 start from the inner ring 23 and are open radially on the outside.
  • the upper film 5 shown in FIG. 1 is particularly advantageously designed without embossed steps in the load-bearing area 10.
  • the spiral grooves 21 can advantageously be produced in the same working step and by the same method as the remaining features of the upper film 5.
  • the production of the upper film 5, as shown in FIG. 1, can be, for example, by
  • FIGS. 2 and 3 an axial foil bearing 41 with a housing body 42, a housing 48 and a shaft 43 is shown in different sectional views.
  • the shaft 43 has a collar 44, for example to
  • Fuel cell system is used.
  • the rotor 45 is provided with a spiral groove structure 46 in a counter surface 51 of the axial foil bearing 41.
  • the spiral groove structure 46 comprises, as shown in FIG Figure 3 sees a number of spiral grooves 47.
  • the spiral groove structure 46 includes, for example, twelve spiral grooves 47 which are open radially outward.
  • the axial film bearing 41 also comprises an upper film 50, which is attached radially on the outside with the aid of fastening means 5j2, which are only indicated
  • the upper film 50 has a flat, planar surface which faces the counter surface 51.
  • a supporting fluid film 53 is formed between the upper foil 50 and the counter surface 51.
  • the axial film bearing 41 also comprises a lower film 55, which has spring properties and between the upper film 50 and the
  • the lower film 55 is designed, for example, in the same way or similar to a conventional bump foil and is advantageously used to compensate for tolerances or inconsistencies between the

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

L'invention concerne un palier de butée à feuilles pourvu d'une feuille supérieure (5), qui est tournée vers une surface antagoniste. L'objet de l'invention est d'améliorer le palier de butée à feuilles, en particulier du point de vue fonctionnel et de la technique de fabrication. À cet effet, le palier de butée à feuilles est caractérisé par une structure de rainures spirales (22).
PCT/EP2020/051357 2019-02-26 2020-01-21 Palier de butée à feuilles WO2020173619A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019202573.0 2019-02-26
DE102019202573.0A DE102019202573A1 (de) 2019-02-26 2019-02-26 Axial-Folienlager

Publications (1)

Publication Number Publication Date
WO2020173619A1 true WO2020173619A1 (fr) 2020-09-03

Family

ID=69192051

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/051357 WO2020173619A1 (fr) 2019-02-26 2020-01-21 Palier de butée à feuilles

Country Status (2)

Country Link
DE (1) DE102019202573A1 (fr)
WO (1) WO2020173619A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022160680A1 (fr) * 2021-01-29 2022-08-04 青岛海尔智能技术研发有限公司 Palier de butée à pression dynamique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022119878A1 (de) 2022-08-08 2024-02-08 Zf Cv Systems Global Gmbh Strömungsmaschine, Brennstoffzellensystem, Fahrzeug, insbesondere Nutzfahrzeug
DE102022210798A1 (de) 2022-10-13 2024-04-18 Robert Bosch Gesellschaft mit beschränkter Haftung Folie für ein Axialfolienlager, Axialfolienlager und Verdichter mit Axialfolienlager

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170389A (en) * 1977-09-21 1979-10-09 Ampex Corporation Foil bearing
DE2635416C3 (de) 1976-08-06 1982-01-21 Dornier System Gmbh, 7990 Friedrichshafen Spiralrillenlager
US6158892A (en) * 1999-08-25 2000-12-12 Capstone Turbine Corporation Fluid film thrust bearing having integral compliant foils
US6702463B1 (en) 2000-11-15 2004-03-09 Capstone Turbine Corporation Compliant foil thrust bearing
JP2012127444A (ja) * 2010-12-16 2012-07-05 Ihi Corp スラスト軸受
EP3299644A1 (fr) * 2015-05-19 2018-03-28 Lifeng Luo Palier de butée à gaz sous pression dynamique de type mixte
DE202018104328U1 (de) * 2018-07-26 2018-08-02 Ebm-Papst Mulfingen Gmbh & Co. Kg Foliengaslagervorrichtung zum Lagern eines Rotors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5529398A (en) * 1994-12-23 1996-06-25 Bosley; Robert W. Compliant foil hydrodynamic fluid film thrust bearing
US5918985A (en) * 1997-09-19 1999-07-06 Capstone Turbine Corporation Compliant foil fluid thrust film bearing with a tilting pad underspring
WO2015028051A1 (fr) * 2013-08-27 2015-03-05 Lux Powertrain S.A. Palier axial à air et micro-turbine à gaz

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2635416C3 (de) 1976-08-06 1982-01-21 Dornier System Gmbh, 7990 Friedrichshafen Spiralrillenlager
US4170389A (en) * 1977-09-21 1979-10-09 Ampex Corporation Foil bearing
US6158892A (en) * 1999-08-25 2000-12-12 Capstone Turbine Corporation Fluid film thrust bearing having integral compliant foils
US6702463B1 (en) 2000-11-15 2004-03-09 Capstone Turbine Corporation Compliant foil thrust bearing
JP2012127444A (ja) * 2010-12-16 2012-07-05 Ihi Corp スラスト軸受
EP3299644A1 (fr) * 2015-05-19 2018-03-28 Lifeng Luo Palier de butée à gaz sous pression dynamique de type mixte
DE202018104328U1 (de) * 2018-07-26 2018-08-02 Ebm-Papst Mulfingen Gmbh & Co. Kg Foliengaslagervorrichtung zum Lagern eines Rotors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022160680A1 (fr) * 2021-01-29 2022-08-04 青岛海尔智能技术研发有限公司 Palier de butée à pression dynamique

Also Published As

Publication number Publication date
DE102019202573A1 (de) 2020-08-27

Similar Documents

Publication Publication Date Title
DE69522683T2 (de) Folienradlager mit hydrodynamischem flüssigkeitsfilm
WO2020173619A1 (fr) Palier de butée à feuilles
DE3043617A1 (de) Gasdichtung
EP2210005A1 (fr) Palier axial, en particulier pour un turbocompresseur
DE2725572A1 (de) Hydrodynamisches gleitlager
WO2016102182A1 (fr) Palier-feuille, procédé pour ajuster une géométrie d'intervalle d'un palier-feuille et procédé approprié de fabrication d'un palier-feuille
EP2920496A2 (fr) Système d'étanchéité à bagues de glissement muni d'un joint d'étanchéité secondaire amélioré
WO2020148029A1 (fr) Système de palier de rotor pour une turbomachine
DE102011005845A1 (de) Kegelrollenlager
WO2019001959A1 (fr) Palier à patins oscillants et procédé de fabrication d'un palier à patins oscillants
DE102016222625A1 (de) Lagerbuchse für eine Welle eines Turboladers
DE3316332A1 (de) Freibewegliches wellenlager und verfahren zum hemmen von dessen axialbewegung
EP2816246A1 (fr) Système de palier avec entretoise
EP2649331A1 (fr) Roulement radial comportant des corps espaceurs libres entre les corps roulants et procédé de montage de ce roulement
EP2535606B1 (fr) Agencement de palier axial
EP4193070A1 (fr) Système de palier pour atomiseur rotatif
DE102016122638A1 (de) Wälzlager
WO2020173620A1 (fr) Feuille supérieur et palier à feuilles axial
DE102020207471A1 (de) Anlaufelement für ein hydrodynamisches Axiallager
DE69907529T2 (de) Einrichtung zur Rotationshinderung für den umlaufenden Spiralkörper einer Spiralfluidmaschine
DE102018220449A1 (de) Kippsegmentlager
WO2019057384A1 (fr) Rotor pour turbocompresseur
DE102017110213A1 (de) Schirmring mit Federfunktion und Eigenzentrierung für Kupplungsnehmerzylinder
DE102017204131A1 (de) Pendelrollenlager
DE102022204029A1 (de) Sensorlagereinheit und Verfahren zum Herstellen einer solchen Sensorlagereinheit

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20701953

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20701953

Country of ref document: EP

Kind code of ref document: A1