WO2024078773A1 - Foil for an axial foil bearing, axial foil bearing and compressor with axial foil bearing - Google Patents

Foil for an axial foil bearing, axial foil bearing and compressor with axial foil bearing Download PDF

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Publication number
WO2024078773A1
WO2024078773A1 PCT/EP2023/071650 EP2023071650W WO2024078773A1 WO 2024078773 A1 WO2024078773 A1 WO 2024078773A1 EP 2023071650 W EP2023071650 W EP 2023071650W WO 2024078773 A1 WO2024078773 A1 WO 2024078773A1
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WIPO (PCT)
Prior art keywords
foil
bearing
axial
segments
film
Prior art date
Application number
PCT/EP2023/071650
Other languages
German (de)
French (fr)
Inventor
Michael Mayer
Felix FOERSTER
Felix WIEDMANN
Thomas Lang
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.)
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Publication of WO2024078773A1 publication Critical patent/WO2024078773A1/en

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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

Definitions

  • the invention relates to a film for an axial film bearing according to the preamble of claim 1, an axial film bearing with such a film and a compressor with such an axial film bearing.
  • Such a film such an axial film bearing and a compressor with such an axial film bearing are known from DE 10 2019 202 573 Al.
  • the axial film bearing is used for the rotatable mounting of a shaft.
  • This axial film bearing has a first film, a so-called cover film, which interacts with an axial bearing collar arranged on the shaft.
  • the first film is loaded towards the axial bearing collar by a second film, a so-called spring film, arranged on the side facing away from the axial bearing collar.
  • the first film has several springy film segments distributed over its circumference. The film segments are separated from one another by slots arranged between them. The design of the first film with the separate film segments enables flexible mobility of the film segments to a limited extent, but this may not be sufficient in some circumstances.
  • the film according to the invention with the features of claim 1 has the advantage that the mobility of the film segments is further improved. This enables an increase in the load-bearing capacity and a reduction in friction losses. Corresponding advantages result for the axial foil bearing according to claim 7, which has an increased load-bearing capacity and reduced friction losses.
  • the advantage for the compressor according to claim 9 is that it has an improved efficiency and less cooling is required as a result of the reduced friction losses.
  • Figure 1 shows a fuel cell system with a compressor with an axial foil bearing in a longitudinal section
  • Figure 2 shows an enlarged view of a foil of the axial foil bearing in a view in the direction of arrow II in Figure 1
  • Figure 3 shows foil segments of the foil in a perspective view.
  • FIG. 1 shows a fuel cell system for a motor vehicle in a simplified schematic manner.
  • the fuel cell system has at least one fuel cell stack 10, to which fuel, for example hydrogen, is supplied via an anode system 12 and oxidizing agent, in particular air, is supplied via a cathode system 14.
  • the cathode system 14 has a gas delivery device 16 in the form of a compressor, through which air is supplied to the fuel cell stack in the amount required for the respective operating state at the required pressure.
  • the compressor 16 has a housing 18 in which an electric motor 20 is arranged as a drive, by means of which a shaft 22 is driven to rotate about its longitudinal axis 23, to which at least one compressor wheel 24 is connected.
  • the shaft 22 is connected to a rotor 26 of the electric motor 20 or the rotor 26 is part of the shaft 22.
  • the electric motor 20 also has a stator 28 which surrounds the rotor 26.
  • the shaft 22 is rotatably mounted in the housing 18, with at least one radial bearing 30 and at least one axial bearing 32 being provided.
  • the radial bearings 30 and the axial bearing 32 are each designed as film bearings. The axial bearing is explained in more detail below.
  • the shaft 22 has an axial bearing disk 34 which can be formed integrally with the shaft 22 or can be connected to the shaft 22 as a separate part.
  • the axial bearing 32 has at least one first bearing foil 36 which interacts with the axial bearing disk 34, i.e. against which the axial bearing disk 34 can come into contact when an axial force acts on the shaft 22.
  • the first bearing foil 36 is referred to as the cover or top foil.
  • the axial bearing 32 usually has at least one second bearing foil 38 which is arranged on the side of the first bearing foil 36 facing away from the axial bearing disk 34.
  • the second bearing foil 38 is designed as a spring foil and is elastically deformable in the direction of the longitudinal axis 23.
  • the second bearing foil 38 can be designed as a corrugated foil, for example.
  • the second bearing foil 38 elastically presses the first bearing foil 36 towards the axial bearing disk 24.
  • the first bearing foil 36 has a closed retaining ring 40 on its outer edge and separate foil segments 42 arranged within the retaining ring 40 and distributed over the circumference. At least three, preferably more than three foil segments 42 are provided, for example six foil segments 42. Each foil segment 42 is connected to the retaining ring 40 via a retaining arm 44, wherein the retaining arm 44 has a smaller width in the circumferential direction than the foil segment 42. Between the There is a radial distance 5 between the outer circumference of the film segments 42 and the inner circumference of the retaining ring 40.
  • the retaining arms 44 extend further inwards in the radial direction relative to the longitudinal axis 23 than the outer circumference of the film segments 42.
  • the retaining arms 44 do not run radially relative to the longitudinal axis 23, for example, but are inclined in the direction of rotation 21 of the shaft 22, such that the radially inner ends of the retaining arms 44 arranged on the film segments 42 lead in the direction of rotation 21 relative to the radially outer ends of the retaining arms 44 arranged on the retaining ring 40.
  • the retaining arms 44 can also run approximately radially or inclined against the direction of rotation 21 of the shaft 22.
  • the retaining arms 44 are arranged on the end regions 42a of the film segments 42 pointing against the direction of rotation 21 of the shaft 22.
  • the film segments 42 are preferably designed such that they do not run in a radial plane with respect to the longitudinal axis 23, but rather at different distances from the radial plane in the direction of the longitudinal axis 23.
  • the end regions 42a of the film segments 42, on which the holding arms 44 are arranged, are arranged lower in the direction of the longitudinal axis 23 than the opposite end regions 42b of the film segments 42.
  • the end regions 42b of the film segments 42 are thus arranged closer to the axial bearing disk 34 than the end regions 42a. Between the end regions 42a and 42b, the film segments 42 run inclined with respect to a radial plane.
  • the first bearing foil 36 is preferably formed in one piece, wherein the retaining ring 40, the retaining arms 44 and the foil segments 42 are produced, for example, starting from a flat foil, which consists for example of thin sheet metal, by punching and bending or embossing.
  • gaps narrowing in the direction of rotation 21 of the shaft 22 form between the film segments 42 and the axial bearing disk 34, in which air cushions are present which prevent direct contact between the film segments 42 and the axial bearing disk 34.
  • air cushions are present which prevent direct contact between the film segments 42 and the axial bearing disk 34.

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

Abstract

The invention relates to a bearing foil (36) for an axial foil bearing (32) for the rotatable mounting of a shaft (22), wherein the bearing foil (36) has a plurality of elastic foil segments (42) arranged distributed over its circumference. Each film segment (42) is connected via a retaining arm (44) to a retaining ring (40) surrounding the film segments (42) around their outer circumference.

Description

Beschreibung Description
Titel Title
Folie für ein
Figure imgf000003_0001
und Verdichter mit
Figure imgf000003_0002
Foil for a
Figure imgf000003_0001
and compressor with
Figure imgf000003_0002
Die Erfindung betrifft eine Folie für ein Axialfolienlager nach der Gattung des Anspruchs 1, ein Axialfolienlager mit einer solchen Folie und einen Verdichter mit einem solchen Axialfolienlager. The invention relates to a film for an axial film bearing according to the preamble of claim 1, an axial film bearing with such a film and a compressor with such an axial film bearing.
Stand der Technik State of the art
Eine solche Folie, ein solches Axialfolienlager und ein Verdichter mit einem solchen Axialfolienlager ist durch die DE 10 2019 202 573 Al bekannt. Das Axial-Folienlager dient zur drehbaren Lagerung einer Welle. Dieses Axialfolienlager weist eine erste Folie, eine sogenannte Deckfolie, auf, die mit einem an der Welle angeordneten Axial-Lagerbund zusammenwirkt. Die erste Folie wird durch eine auf der dem Axial-Lagerbund abgewandten Seite angeordnete zweite Folie, eine sogenannte Federfolie, zum Axial-Lagerbund hin beaufschlagt. Die erste Folie weist mehrere über ihren Umfang verteilt angeordnete federnde Foliensegmente auf. Die Foliensegmente sind dabei durch zwischen diesen angeordnete Schlitze voneinander getrennt. Die Ausbildung der ersten Folie mit den getrennten Foliensegmenten ermöglicht in begrenztem Ausmaß eine flexible Beweglichkeit der Foliensegmente, die jedoch unter Umständen nicht ausreichend ist. Such a film, such an axial film bearing and a compressor with such an axial film bearing are known from DE 10 2019 202 573 Al. The axial film bearing is used for the rotatable mounting of a shaft. This axial film bearing has a first film, a so-called cover film, which interacts with an axial bearing collar arranged on the shaft. The first film is loaded towards the axial bearing collar by a second film, a so-called spring film, arranged on the side facing away from the axial bearing collar. The first film has several springy film segments distributed over its circumference. The film segments are separated from one another by slots arranged between them. The design of the first film with the separate film segments enables flexible mobility of the film segments to a limited extent, but this may not be sufficient in some circumstances.
Offenbarung der Erfindung Disclosure of the invention
Vorteile der Erfindung Advantages of the invention
Die erfindungsgemäße Folie mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass die Beweglichkeit der Foliensegmente weiter verbessert ist. Dies ermöglicht eine Erhöhung der Tragkraft und eine Verringerung der Reibungsverluste. Entsprechende Vorteile ergeben sich für das Axialfolienlager gemäß Anspruch 7, das eine erhöhte Tragkraft und verringerte Reibungsverluste aufweist. Für den Verdichter gemäß Anspruch 9 ergibt sich der Vorteil, dass dieser einen verbesserten Wirkungsgrad aufweist und infolge der verringerten Reibungsverluste eine geringere Kühlung erforderlich ist. The film according to the invention with the features of claim 1 has the advantage that the mobility of the film segments is further improved. This enables an increase in the load-bearing capacity and a reduction in friction losses. Corresponding advantages result for the axial foil bearing according to claim 7, which has an increased load-bearing capacity and reduced friction losses. The advantage for the compressor according to claim 9 is that it has an improved efficiency and less cooling is required as a result of the reduced friction losses.
In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung angegeben. Durch die Ausbildungen gemäß einem der Ansprüche 2 bis 6 ist die Beweglichkeit der Foliensegmente und damit die Funktion der Folie weiter verbessert. Advantageous embodiments and further developments of the invention are specified in the dependent claims. The embodiments according to one of claims 2 to 6 further improve the mobility of the film segments and thus the function of the film.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein Ausführungsbeispiel im Einzelnen beschrieben ist. Further advantages, features and details of the invention emerge from the following description, in which an embodiment is described in detail with reference to the drawing.
Zeichnung Drawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 ein Brennstoffzellensystem mit einem Verdichter mit einem Axialfolienlager in einem Längsschnitt, Figur 2 in vergrößerter Darstellung eine Folie des Axialfolienlagers in einer Ansicht in Pfeilrichtung II in Figur 1 und Figur 3 Foliensegmente der Folie in einer perspektivischen Darstellung. An embodiment of the invention is shown in the drawing and explained in more detail in the following description. Figure 1 shows a fuel cell system with a compressor with an axial foil bearing in a longitudinal section, Figure 2 shows an enlarged view of a foil of the axial foil bearing in a view in the direction of arrow II in Figure 1 and Figure 3 shows foil segments of the foil in a perspective view.
Beschreibung des Ausführungsbeispiels Description of the embodiment
In Figur 1 ist in vereinfachter schematischer Weise ein Brennstoffzellensystem beispielsweise für ein Kraftfahrzeug dargestellt. Das Brennstoffzellensystem weist wenigstens einen Brennstoffzellenstack 10 auf, dem über ein Anodensystem 12 Brennstoff, beispielsweise Wasserstoff, und über ein Kathodensystem 14 Oxidationsmittel, insbesondere Luft, zugeführt wird. Das Kathodensystem 14 weist eine Gasfördervorrichtung 16 in Form eines Verdichters auf, durch den dem Brennstoffzellenstack Luft in der für den jeweiligen Betriebszustand erforderlichen Menge mit dem erforderlichen Druck zugeführt wird. Der Verdichter 16 weist ein Gehäuse 18 auf, in dem ein Elektromotor 20 als Antrieb angeordnet ist, durch den eine Welle 22 um ihre Längsachse 23 rotierend angetrieben wird, mit der wenigstens ein Verdichterrad 24 verbunden ist. Die Welle 22 ist mit einem Rotor 26 des Elektromotors 20 verbunden oder der Rotor 26 ist Teil der Welle 22. Der Elektromotor 20 weist außerdem einen Stator 28 auf, der den Rotor 26 umgibt. Figure 1 shows a fuel cell system for a motor vehicle in a simplified schematic manner. The fuel cell system has at least one fuel cell stack 10, to which fuel, for example hydrogen, is supplied via an anode system 12 and oxidizing agent, in particular air, is supplied via a cathode system 14. The cathode system 14 has a gas delivery device 16 in the form of a compressor, through which air is supplied to the fuel cell stack in the amount required for the respective operating state at the required pressure. The compressor 16 has a housing 18 in which an electric motor 20 is arranged as a drive, by means of which a shaft 22 is driven to rotate about its longitudinal axis 23, to which at least one compressor wheel 24 is connected. The shaft 22 is connected to a rotor 26 of the electric motor 20 or the rotor 26 is part of the shaft 22. The electric motor 20 also has a stator 28 which surrounds the rotor 26.
Die Welle 22 ist im Gehäuse 18 drehbar gelagert, wobei wenigstens ein Radiallager 30 und wenigstens ein Axiallager 32 vorgesehen sind. Es können zwei in Richtung der Längsachse 23 zueinander versetzt angeordnete Radiallager 30 vorgesehen sein. Die Radiallager 30 und das Axiallager 32 sind jeweils als Folienlager ausgebildet. Nachfolgend wird das Axallager näher erläutert. The shaft 22 is rotatably mounted in the housing 18, with at least one radial bearing 30 and at least one axial bearing 32 being provided. Two radial bearings 30 arranged offset from one another in the direction of the longitudinal axis 23 can be provided. The radial bearings 30 and the axial bearing 32 are each designed as film bearings. The axial bearing is explained in more detail below.
Die Welle 22 weist eine Axiallagerscheibe 34 auf, die einstückig mit der Welle 22 ausgebildet sein kann oder als separates Teil mit der Welle 22 verbunden sein kann. Das Axiallager 32 weist wenigstens eine erste Lagerfolie 36 auf, die mit der Axiallagerscheibe 34 zusammenwirkt, das heißt an der die Axiallagerscheibe 34 bei einer auf die Welle 22 wirkenden Axialkraft zur Anlage kommen kann. Die erste Lagerfolie 36 wird als Deck- oder Topfolie bezeichnet. Das Axiallager 32 weist üblicherweise wenigstens eine zweite Lagerfolie 38 auf, die auf der der Axiallagerscheibe 34 abgewandten Seite der ersten Lagerfolie 36 angeordnet ist. Die zweite Lagerfolie 38 ist als Federfolie ausgebildet und in Richtung der Längsachse 23 elastisch verformbar. Die zweite Lagerfolie 38 kann beispielsweise als Wellfolie ausgebildet sein. Durch die zweite Lagerfolie 38 wird die erste Lagerfolie 36 elastisch zur Axiallagerscheibe 24 gedrückt. The shaft 22 has an axial bearing disk 34 which can be formed integrally with the shaft 22 or can be connected to the shaft 22 as a separate part. The axial bearing 32 has at least one first bearing foil 36 which interacts with the axial bearing disk 34, i.e. against which the axial bearing disk 34 can come into contact when an axial force acts on the shaft 22. The first bearing foil 36 is referred to as the cover or top foil. The axial bearing 32 usually has at least one second bearing foil 38 which is arranged on the side of the first bearing foil 36 facing away from the axial bearing disk 34. The second bearing foil 38 is designed as a spring foil and is elastically deformable in the direction of the longitudinal axis 23. The second bearing foil 38 can be designed as a corrugated foil, for example. The second bearing foil 38 elastically presses the first bearing foil 36 towards the axial bearing disk 24.
Die erste Lagerfolie 36 weist an ihrem Außenrand einen geschlossenen Haltering 40 auf und innerhalb des Halterings 40 über den Umfang verteilt angeordnete, voneinander getrennte Foliensegmente 42. Es sind mindestens drei, vorzugsweise mehr als drei Foliensegmente 42 vorgesehen, beispielsweise sechs Foliensegmente 42. Jedes Foliensegment 42 ist über einen Haltearm 44 mit dem Haltering 40 verbunden, wobei der Haltearm 44 in Umfangsrichtung eine geringere Breite aufweist als das Foliensegment 42. Zwischen dem Außenumfang der Foliensegmente 42 und dem Innenumfang des Halterings 40 ist ein radialer Abstand 5 vorhanden. The first bearing foil 36 has a closed retaining ring 40 on its outer edge and separate foil segments 42 arranged within the retaining ring 40 and distributed over the circumference. At least three, preferably more than three foil segments 42 are provided, for example six foil segments 42. Each foil segment 42 is connected to the retaining ring 40 via a retaining arm 44, wherein the retaining arm 44 has a smaller width in the circumferential direction than the foil segment 42. Between the There is a radial distance 5 between the outer circumference of the film segments 42 and the inner circumference of the retaining ring 40.
Die Haltearme 44 ragen ausgehend vom Haltering 40 in radialer Richtung bezüglich der Längsachse 23 weiter nach innen als der Außenumfang der Foliensegmente 42. Die Haltearme 44 verlaufen beispielsweise nicht radial bezüglich der Längsachse 23 sondern in Drehrichtung 21 der Welle 22 geneigt, derart, dass die an den Foliensegmenten 42 angeordneten radial inneren Enden der Haltearme 44 bezüglich den am Haltering 40 angeordneten radial äußeren Enden der Haltearme 44 in Drehrichtung 21 vorauseilen. Alternativ können die Haltearme 44 auch etwa radial oder entgegen der Drehrichtung 21 der Welle 22 geneigt verlaufen. Die Haltearme 44 sind an den entgegen der Drehrichtung 21 der Welle 22 weisenden Endbereichen 42a der Foliensegmente 42 angeordnet. Starting from the retaining ring 40, the retaining arms 44 extend further inwards in the radial direction relative to the longitudinal axis 23 than the outer circumference of the film segments 42. The retaining arms 44 do not run radially relative to the longitudinal axis 23, for example, but are inclined in the direction of rotation 21 of the shaft 22, such that the radially inner ends of the retaining arms 44 arranged on the film segments 42 lead in the direction of rotation 21 relative to the radially outer ends of the retaining arms 44 arranged on the retaining ring 40. Alternatively, the retaining arms 44 can also run approximately radially or inclined against the direction of rotation 21 of the shaft 22. The retaining arms 44 are arranged on the end regions 42a of the film segments 42 pointing against the direction of rotation 21 of the shaft 22.
Die Foliensegmente 42 sind vorzugsweise derart ausgebildet, dass diese nicht in einer Radialebene bezüglich der Längsachse 23 verlaufen sondern bezüglich einer Radialebene in unterschiedlichen Abständen von der Radialebene in Richtung der Längsachse 23. Die Endbereiche 42a der Foliensegmente 42, an denen die Haltearme 44 angeordnet sind, sind in Richtung der Längsachse 23 tiefer angeordnet als die entgegengesetzten Endbereiche 42b der Foliensegmente 42. Die Endbereiche 42b der Foliensegmente 42 sind somit näher zur Axiallagerscheibe 34 angeordnet als die Endbereiche 42a. Zwischen den Endbereichen 42a und 42b verlaufen die Foliensegmente 42 geneigt bezüglich einer Radialebene. The film segments 42 are preferably designed such that they do not run in a radial plane with respect to the longitudinal axis 23, but rather at different distances from the radial plane in the direction of the longitudinal axis 23. The end regions 42a of the film segments 42, on which the holding arms 44 are arranged, are arranged lower in the direction of the longitudinal axis 23 than the opposite end regions 42b of the film segments 42. The end regions 42b of the film segments 42 are thus arranged closer to the axial bearing disk 34 than the end regions 42a. Between the end regions 42a and 42b, the film segments 42 run inclined with respect to a radial plane.
Die erste Lagerfolie 36 ist vorzugsweise einstückig ausgebildet, wobei der Haltering 40, die Haltearme 44 und die Foliensegmente 42 beispielsweise ausgehend von einer ebenen Folie, die beispielsweise aus dünnem Blech besteht, durch Stanzen und Biegen oder Prägen hergestellt wird. The first bearing foil 36 is preferably formed in one piece, wherein the retaining ring 40, the retaining arms 44 and the foil segments 42 are produced, for example, starting from a flat foil, which consists for example of thin sheet metal, by punching and bending or embossing.
Im Betrieb bilden sich zwischen den Foliensegmenten 42 und der Axiallagerscheibe 34 sich in Drehrichtung 21 der Welle 22 verengende Spalte aus, in denen Luftpolster vorhanden sind, die einen direkten Kontakt zwischen den Foliensegmenten 42 und der Axiallagerscheibe 34 verhindern. Hierdurch wird eine geringe Reibung im Axiallager 32, dadurch geringer Verschleiß und eine geringe Wärmeentwicklung erreicht. During operation, gaps narrowing in the direction of rotation 21 of the shaft 22 form between the film segments 42 and the axial bearing disk 34, in which air cushions are present which prevent direct contact between the film segments 42 and the axial bearing disk 34. As a result, low friction is achieved in the axial bearing 32, thus low wear and low heat generation.

Claims

Ansprüche Expectations
1. Lagerfolie (36) für ein Axialfolienlager (32) zur drehbaren Lagerung einer Welle (22), wobei die Lagerfolie (36) mehrere über deren Umfang verteilt angeordnete elastische Foliensegmente (42) aufweist, dadurch gekennzeichnet, dass jedes Foliensegment (42) über einen Haltearm (44) mit einem die Foliensegmente (42) über deren Außenumfang umgebenden Haltering (40) verbunden ist. 1. Bearing foil (36) for an axial foil bearing (32) for the rotatable mounting of a shaft (22), wherein the bearing foil (36) has a plurality of elastic foil segments (42) distributed over its circumference, characterized in that each foil segment (42) is connected via a holding arm (44) to a retaining ring (40) surrounding the foil segments (42) over their outer circumference.
2. Lagerfolie nach Anspruch 1, dadurch gekennzeichnet, dass sich die Haltearme (44) in radialer Richtung bezüglich einer Längsachse (23) des Axialfolienlagers (32) nach innen weiter erstrecken als der Außenumfang der Foliensegmente (42). 2. Bearing foil according to claim 1, characterized in that the holding arms (44) extend inwardly in the radial direction with respect to a longitudinal axis (23) of the axial foil bearing (32) further than the outer circumference of the foil segments (42).
3. Lagerfolie nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Haltearme (44) in Umfangsrichtung eine geringere Breite aufweisen als die Foliensegmente (42). 3. Storage film according to claim 1 or 2, characterized in that the holding arms (44) have a smaller width in the circumferential direction than the film segments (42).
4. Lagerfolie nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Haltearme (44) in Drehrichtung (21) oder entgegen der Drehrichtung (21) der Welle (22) geneigt verlaufen. 4. Bearing foil according to one of claims 1 to 3, characterized in that the holding arms (44) extend inclined in the direction of rotation (21) or against the direction of rotation (21) of the shaft (22).
5. Lagefolie nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Haltearme (44) etwa radial zur Längsachse (23) des Axialfolienlagers (32) verlaufen. 5. Positioning film according to one of claims 1 to 3, characterized in that the holding arms (44) extend approximately radially to the longitudinal axis (23) of the axial film bearing (32).
6. Lagerfolie nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die den Haltearmen (44) abgewandten Endbereiche (42b) der Foliensegmente (42) in Richtung einer Längsachse (23) des Axialfolienlagers (32) gesehen versetzt angeordnet sind gegenüber den mit den Haltearmen (44) verbundenen Endbereichen (42a) der Foliensegmente (42). Axialfolienlager zur drehbaren Lagerung einer Welle (22) mit wenigstens einer ersten Lagerfolie (36), die mit einer Axiallagerscheibe (34) zusammenwirkt, dadurch gekennzeichnet, dass die wenigstens eine erste Lagerfolie (36) gemäß einem der vorstehenden Ansprüche ausgebildet ist. Axialfolienlager nach Anspruch 7, dadurch gekennzeichnet, dass zusätzlich zur wenigstens einen ersten Lagerfolie (36) wenigstens eine zweite Lagerfolie (38) vorgesehen ist, die vorzugsweise als Federfolie ausgebildet ist und die an der wenigstens einen ersten Lagerfolie (36) anliegt. Verdichter, insbesondere Luftverdichter für ein Brennstoffzellensystem mit einer Welle (22), mit der wenigstens ein Verdichterrad (24) verbunden ist und die über wenigstens ein Axialfolienlager (32) drehbar gelagert ist, dadurch gekennzeichnet, dass das wenigstens eine Axialfolienlager (32) gemäß Anspruch 7 oder 8 ausgebildet ist. 6. Bearing foil according to one of the preceding claims, characterized in that the end regions (42b) of the foil segments (42) facing away from the holding arms (44) are arranged offset in the direction of a longitudinal axis (23) of the axial foil bearing (32) with respect to the end regions (42a) of the foil segments (42) connected to the holding arms (44). Axial foil bearing for the rotatable mounting of a shaft (22) with at least one first bearing foil (36) which interacts with an axial bearing disk (34), characterized in that the at least one first bearing foil (36) is designed according to one of the preceding claims. Axial foil bearing according to claim 7, characterized in that in addition to the at least one first bearing foil (36), at least one second bearing foil (38) is provided, which is preferably designed as a spring foil and which rests against the at least one first bearing foil (36). Compressor, in particular air compressor for a fuel cell system, with a shaft (22) to which at least one compressor wheel (24) is connected and which is rotatably mounted via at least one axial foil bearing (32), characterized in that the at least one axial foil bearing (32) is designed according to claim 7 or 8.
PCT/EP2023/071650 2022-10-13 2023-08-04 Foil for an axial foil bearing, axial foil bearing and compressor with axial foil bearing WO2024078773A1 (en)

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Application Number Priority Date Filing Date Title
DE102022210798.5 2022-10-13
DE102022210798.5A DE102022210798A1 (en) 2022-10-13 2022-10-13 Foil for an axial foil bearing, axial foil bearing and compressor with axial foil bearing

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Citations (5)

* Cited by examiner, † Cited by third party
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US20100027925A1 (en) * 2004-06-07 2010-02-04 Honeywell International Inc. Thrust bearing
WO2015028051A1 (en) * 2013-08-27 2015-03-05 Lux Powertrain S.A. Axial air bearing and micro gas turbine
DE102019202573A1 (en) 2019-02-26 2020-08-27 Robert Bosch Gmbh Axial foil bearings
US20220090626A1 (en) * 2019-01-18 2022-03-24 Ihi Corporation Thrust foil bearing
US20220275827A1 (en) * 2019-07-01 2022-09-01 Bladon Jets Holdings Limited Compliant foil thrust bearing

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* Cited by examiner, † Cited by third party
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US20100027925A1 (en) * 2004-06-07 2010-02-04 Honeywell International Inc. Thrust bearing
WO2015028051A1 (en) * 2013-08-27 2015-03-05 Lux Powertrain S.A. Axial air bearing and micro gas turbine
US20220090626A1 (en) * 2019-01-18 2022-03-24 Ihi Corporation Thrust foil bearing
DE102019202573A1 (en) 2019-02-26 2020-08-27 Robert Bosch Gmbh Axial foil bearings
US20220275827A1 (en) * 2019-07-01 2022-09-01 Bladon Jets Holdings Limited Compliant foil thrust bearing

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