EP3880979A1 - Folienlager - Google Patents
FolienlagerInfo
- Publication number
- EP3880979A1 EP3880979A1 EP19805522.0A EP19805522A EP3880979A1 EP 3880979 A1 EP3880979 A1 EP 3880979A1 EP 19805522 A EP19805522 A EP 19805522A EP 3880979 A1 EP3880979 A1 EP 3880979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foil
- bearing housing
- grooves
- bearing
- plug
- 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- Withdrawn
Links
- 239000011888 foil Substances 0.000 title claims abstract description 60
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 239000013039 cover film Substances 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000010408 film Substances 0.000 description 14
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Classifications
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- 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
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/024—Sliding-contact bearings for exclusively rotary movement for radial load only with flexible leaves to create hydrodynamic wedge, e.g. radial 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact 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
- F16C43/00—Assembling bearings
- F16C43/02—Assembling sliding-contact 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
- F16C2360/00—Engines or pumps
Definitions
- the invention relates to a foil bearing according to the preamble forming Merkma len of claim 1, which is particularly advantageous for storage ge ring loaded, high speed shafts can be used, for example in compressors, gas turbines, turbochargers and the like.
- Foil bearings are hydrodynamic or aerodynamic bearings, in which, in the unloaded state, a bearing surface supporting the rotating shaft is formed by a thin and wear-resistant cover film, which is supported on the other hand by an elastic corrugated film arranged between the cover film and a bearing housing.
- a hydrodynamic or aerodynamic film is formed between the shaft and the cover film, which carries the shaft. There is only direct movement contact between the shaft and the cover film during start and stop processes.
- a generic foil bearing for supporting a shaft is known for example from DE 10 2015 224 866 A1.
- This foil bearing consists of a sleeve-like bearing housing which, in a first embodiment, has a single elastic wellfo arranged on the inner periphery of the bearing housing and a single cover foil covering this corrugated foil, which forms a bearing surface for the shaft.
- the foil bearing has three elastic corrugated foils arranged one after the other in the circumferential direction and on the inner circumference of the bearing housing, as well as three covering foils covering the corrugated foils, which form three bearing surfaces for the shaft.
- Independent gig of the number of foil packages are arranged on the inside of the bearing housing a pair or three pairs from the inside to the outside aligned slots in which the end edges of the cover foils and the corrugated foils are taken up and are tangentially freely movable. Since the plug-in grooves are axially open on both sides, in order to avoid lateral displacement of the foil packages from the plug-in grooves in each end edge of the corrugated foils and the cover foils, an elongated hole-like recess is additionally incorporated, each with a bore in a bore through the bearing housing and through the plug-in grooves interacts bolts used as an axial fixing agent for the film packages.
- a disadvantage of such a film warehouse has proven to be the high manufacturing outlay for the notching of the recesses in the end edges of the corrugated and cover films and for the introduction of the bolt holes for the axial fixation of the film packages and the associated relatively high manufacturing costs.
- the invention is therefore based on the object to conceive a film storage which, while maintaining the tangential mobility of the cover film in the plug-in grooves inexpensively producible axial fixation means against lateral displacement of the film package from the slots.
- this object is achieved in a film bearing according to the Oberbe handle of claim 1 such that a circumferential groove is arranged on at least one axial end region of the inside of the bearing housing, into which a retaining ring designed as an axial fixing means at least the cover film can be inserted.
- the plug-in grooves in the inside of the bearing housing are designed to be axially open on both sides and in both axial end regions of the inside of the bearing housing are circumferential groove grooves for retaining rings for axial fixing on both sides of at least the cover film.
- the plug-in grooves in the inside of the bearing housing are formed on one axial side and to arrange a circumferential groove only in the end region of the other open axial side, into which only a retaining ring for axially fixing at least the cover film is inserted.
- the retaining rings have a rectangular profile cross section with such a radial height that the axially open on both sides plug-in grooves are at least a third and at most 100% of their radial extent can be covered.
- the design of the locking rings with such a radial height is intended to ensure that at least the cover film, despite its tangential mobility in the plug-in grooves, is securely fixed against lateral displacement from the plug-in grooves and, at the same time, contact between the shaft to be supported and the locking rings is excluded.
- the circumferential insertion grooves in the bearing housing each have an opening to the axial side of the bearing housing, into which a tool can be inserted when dismantling the retaining rings.
- This opening is preferably formed as a milled to the bottom of the plug-in milling, one for attaching a tool suitable length for disassembly at the ends of the circlips.
- the end edges of the at least one corrugated foil are flat and arranged together with the end edges of the cover foil in the plug-in grooves in the inside of the bearing housing in a freely movable manner and are axially fixed by the locking rings.
- the foil bearing designed in accordance with the invention thus has the advantage over the foil bearings known from the prior art that it can be axially fixed against the use of circlips which can be used in circumferential groove grooves in the bearing housing while maintaining the tangential mobility of the cover foil in the plug-in grooves in the inside of the bearing housing has a lateral displacement of the film package from the slots.
- Figure 1 is a side view of a foil bearing designed according to the invention with a supported shaft;
- Figure 2 is a spatial view of a designed according to the invention
- FIG. 3 shows a spatial view of a foil bearing designed according to the invention after the securing rings have been installed
- FIG. 4 shows a cross section through the bearing housing of a foil bearing designed according to the invention.
- a foil bearing 1 for supporting a shaft which is not described in any more detail, which comprises a sleeve-like bearing housing 2, three elastic corrugated foils 3 arranged one after the other in the circumferential direction on the inner circumference of the bearing housing 2, and three these corrugated foils 3 each covering a bearing surface forming cover sheets 4.
- FIGS. 2 and 3 it can be seen in FIGS. 2 and 3 that on the inside of the bearing housing 2 there are three pairs of plug-in grooves 5, 6 oriented from the inside out, which serve to receive the end edges 7, 8 of the cover foils 4 and in which these end edges 7, 8 are tangentially freely movable net angeord.
- the unspecified end edges of the corrugated foils 3 are also flat and arranged together with the end edges 7, 8 of the Deckfo lien in the grooves 5, 6 in the inside of the bearing housing 2.
- the foil packs each consisting of a corrugated foil 3 and a cover foil 4, are secure against lateral ones despite their tangential mobility in the plug-in grooves 5, 6 Moving from the slots 5, 6 fixed in the bearing housing 2 and at the same time contact between the shaft to be supported and the locking rings 10, 12 is excluded.
- the circumferential groove 9, 11 in the bearing housing 2 each have an opening 13 to the axial side of the bearing housing 2, into which a tool can be inserted during the disassembly of the securing rings 10, 12. This opening is clearly visible as a cutout that extends to the bottom of the plug-in grooves 5, 6 and has a length that is suitable for attaching a tool for disassembly to the ends of the locking rings 10, 12.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018128299.0A DE102018128299A1 (de) | 2018-11-13 | 2018-11-13 | Folienlager |
| PCT/DE2019/100915 WO2020098866A1 (de) | 2018-11-13 | 2019-10-21 | Folienlager |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3880979A1 true EP3880979A1 (de) | 2021-09-22 |
Family
ID=68609845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19805522.0A Withdrawn EP3880979A1 (de) | 2018-11-13 | 2019-10-21 | Folienlager |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3880979A1 (de) |
| KR (1) | KR20210089661A (de) |
| CN (1) | CN112997015A (de) |
| DE (1) | DE102018128299A1 (de) |
| WO (1) | WO2020098866A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102498528B1 (ko) | 2020-12-29 | 2023-02-10 | 현대위아 주식회사 | 에어포일 저널베어링 |
| DE102021108887B3 (de) | 2021-04-09 | 2022-09-15 | Schaeffler Technologies AG & Co. KG | Radial-Folienlager mit stirnseitg verschweißten Folienpaketen |
| WO2023224168A1 (ko) * | 2022-05-20 | 2023-11-23 | 엘지전자 주식회사 | 터보 압축기 |
| CN118757511B (zh) * | 2024-04-17 | 2025-06-13 | 南华大学 | 一种新型箔片气体动压轴承 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2853146C2 (de) * | 1978-12-08 | 1984-01-05 | Franz Klaus Union Armaturen, Pumpen Gmbh & Co, 4630 Bochum | Foliengleitlager, insbesondere für Chemiepumpen |
| US5634723A (en) * | 1995-06-15 | 1997-06-03 | R & D Dynamics Corporation | Hydrodynamic fluid film bearing |
| CA2690994A1 (en) * | 2007-06-12 | 2008-12-18 | Kturbo, Inc. | Radial foil bearing with sealing function |
| EP2706245A1 (de) * | 2012-09-06 | 2014-03-12 | Siemens Aktiengesellschaft | Radialgasfolienlager |
| CN104884825B (zh) * | 2012-12-19 | 2018-02-09 | Ntn株式会社 | 薄衬垫轴承及涡轮机械 |
| CN105765245B (zh) * | 2013-12-12 | 2018-10-30 | Ntn株式会社 | 箔片轴承和具有该箔片轴承的箔片轴承单元及涡轮机械 |
| JP6479456B2 (ja) * | 2013-12-24 | 2019-03-06 | Ntn株式会社 | フォイル、フォイル軸受、及びフォイル軸受の組立方法 |
| DE102015224866A1 (de) | 2015-12-10 | 2017-06-14 | Schaeffler Technologies AG & Co. KG | Folienlager |
-
2018
- 2018-11-13 DE DE102018128299.0A patent/DE102018128299A1/de active Pending
-
2019
- 2019-10-21 WO PCT/DE2019/100915 patent/WO2020098866A1/de not_active Ceased
- 2019-10-21 CN CN201980074225.2A patent/CN112997015A/zh active Pending
- 2019-10-21 EP EP19805522.0A patent/EP3880979A1/de not_active Withdrawn
- 2019-10-21 KR KR1020217013772A patent/KR20210089661A/ko not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018128299A1 (de) | 2020-05-14 |
| KR20210089661A (ko) | 2021-07-16 |
| CN112997015A (zh) | 2021-06-18 |
| WO2020098866A1 (de) | 2020-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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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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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20210614 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20220104 |
|
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |