CN117450167A - Axial foil air thrust bearing and air compressor - Google Patents

Axial foil air thrust bearing and air compressor Download PDF

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Publication number
CN117450167A
CN117450167A CN202311757224.2A CN202311757224A CN117450167A CN 117450167 A CN117450167 A CN 117450167A CN 202311757224 A CN202311757224 A CN 202311757224A CN 117450167 A CN117450167 A CN 117450167A
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CN
China
Prior art keywords
foil
bearing
air
axial
thrust
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Granted
Application number
CN202311757224.2A
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Chinese (zh)
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CN117450167B (en
Inventor
李大同
柳向楠
刘晋
杨耀鹏
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Shandong Huadong Fan Co ltd
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Shandong Huadong Fan Co ltd
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Priority to CN202311757224.2A priority Critical patent/CN117450167B/en
Publication of CN117450167A publication Critical patent/CN117450167A/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
    • 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
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings

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

Abstract

The invention relates to an axial foil air thrust bearing and an air compressor, wherein the axial foil air thrust bearing comprises a thrust disc and a bearing seat, the bearing seat and the thrust disc are coaxially arranged, the thrust disc is sleeved on a rotor, the supporting surface of the bearing seat faces the thrust disc, a plurality of supporting parts are uniformly arranged on the supporting surface of the bearing seat in a circumferential direction, each supporting part comprises a wave foil, a top foil and a guide foil which are sequentially arranged from the supporting surface of the bearing seat to the direction of the thrust disc, the guide foil comprises an inner guide foil and an outer guide foil which are concentrically arranged, and an air groove is arranged between the inner guide foil and the outer guide foil. The invention provides an axial foil air thrust bearing, which increases the total pressure in the axial foil air thrust bearing and improves the bearing capacity of a thrust disc by arranging a top foil and guide foil structure in a supporting part.

Description

Axial foil air thrust bearing and air compressor
Technical Field
The invention relates to an axial foil air thrust bearing and an air compressor, and belongs to the field of air suspension bearings.
Background
The foil air bearing is widely applied to turbomachinery such as turbochargers, air circulators, air compressors, micro gas turbines and the like due to the characteristics of high temperature resistance, high rotating speed, oil-free lubrication, small friction loss and the like.
The axial foil air thrust bearing is a sliding bearing which uses gas as a lubricating medium, and when a rotating shaft drives a thrust disc to rotate, viscous gas pressure, namely a gas film, can be formed between the thrust disc and the foil air thrust bearing to prevent the rotating shaft from axially moving.
However, the existing axial foil air thrust bearing still has the problem of insufficient bearing capacity for the thrust disc, and the service life of the axial foil air thrust bearing is affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the axial foil air thrust bearing and the air compressor, and the total pressure in the axial foil air thrust bearing is increased and the bearing capacity of the thrust disc is improved by arranging the top foil and the guide foil structures in the supporting part.
The technical scheme of the invention is as follows:
an axial foil air thrust bearing comprises a thrust disc and a bearing seat, wherein the bearing seat is of a circular ring structure, the bearing seat and the thrust disc are coaxially arranged, the thrust disc is sleeved on a rotor,
the supporting surface of the bearing seat faces the thrust disc, a plurality of supporting components are uniformly arranged on the supporting surface of the bearing seat in a circumferential direction,
each supporting component comprises a wave foil, a top foil and a guide foil which are sequentially arranged from the supporting surface of the bearing seat towards the thrust disc, wherein the guide foil comprises an inner guide foil and an outer guide foil which are concentrically arranged, an air groove is arranged between the inner guide foil and the outer guide foil, and the inner guide foil and the outer guide foil are mutually independent.
According to a preferred embodiment of the invention, the thickness of the inner and outer guide foils is the same, the thickness of the inner and outer guide foils being greater than the thickness of the top foil. The design of the top foil can prevent the pressure of the air film from leaking from the wave foil to the outside of the axial foil air thrust bearing; the design of the inner and outer guide foils enables the bearing capacity of the supporting part to be more uniform, and the bearing capacity of the axial foil air thrust bearing is improved. Based on the functions of different foils, the thicknesses of the inner guide foil and the outer guide foil are set to be the same and larger than the thickness of the top foil.
According to the invention, the corrugated foil comprises a plurality of first bulges and second bulges which are parallel and are arranged at intervals, wherein the bulges of the first bulges and the second bulges face the direction of the thrust disc;
one end of the wave foil is a first fixed end, the other end of the wave foil is a first free end, and the first fixed end is fixed on the supporting surface of the bearing seat, for example, the first fixed part of the wave foil can be fixed on the supporting surface of the bearing seat in a welding mode; the first free end extends freely.
According to the present invention, preferably, the width of the first protrusion is larger than the width of the second protrusion, and the height of the first protrusion is larger than the height of the second protrusion. Through setting up the protruding structure of two kinds of width and degree of depth, form cascaded resistance to the air film, better prevent the axial float of rotor.
According to the invention, preferably, the corrugated foil is provided with a plurality of first air passages along the circumferential direction of the bearing seat, so that the corrugated foil forms a single-piece multi-column arrangement.
According to the invention, in each support part, a top foil washer is also provided on the support surface of the bearing housing for fixing and supporting the top foil, and the top foil washer is located close to the first free end of the wave foil, and the top foil washer is located along the radial direction of the bearing housing. The provision of the top foil shim facilitates the formation of a suitable inclination of the top foil with the wave foil, optimizing the load carrying capacity of the support member. One end of the top foil is a second fixed end, the other end of the top foil is a second free end, and the second fixed end is fixed on the top foil gasket.
According to the invention, preferably, one ends of the inner guide foil and the outer guide foil are third fixed ends, the other ends of the inner guide foil and the outer guide foil are third free ends, and the third fixed ends are fixed on the second fixed ends of the top foil and are positioned above the top foil gaskets.
According to a preferred embodiment of the invention, the arc length of the top foil is smaller than the arc length of the guide foil. The arrangement is beneficial to partial gas to enter the next supporting component preferentially through the gas tank, and air and pressure are better supplemented for the inner guide foil and the outer guide foil.
According to the invention, the bearing seat is provided with a plurality of bearing fixing holes and a second air passage, the bearing fixing holes are used for installing the bearing seat on the bearing fixing part, the bearing fixing part can be an end cover and the like, and the second air passage is used for guiding air into the bearing.
According to the present invention, preferably, the bearing fixing hole and the second air passage are provided in pairs, and the bearing fixing hole and the second air passage are provided in sequence along the radial direction of the bearing housing. It is advantageous to prevent turbulence from being generated when air flows rapidly.
An air compressor comprises the axial foil air thrust bearing.
The beneficial effects of the invention are as follows:
1. the axial foil air thrust bearing provided by the invention can increase the total pressure in the bearing and has better bearing capacity for the thrust disc; specifically, by arranging the top foil and the guide foil in the axial foil air thrust bearing, the guide foil is divided into an independent inner guide foil and an independent outer guide foil. When the radial air bearing swings radially, the distance between the thrust disk and the outer guide foil is reduced, the wave foil extends towards the first free end, and the inner guide foil and the outer guide foil are independent, so that the deflection of the outer guide foil does not influence the action of the inner guide foil, and the inner guide foil can still maintain the bearing capacity of the thrust disk. The design of separating the inner guide foil from the outer guide foil increases the stressed area of the supporting part, so that the acting force of the supporting part is more uniform.
2. According to the design of the inner and outer guide foils, when the gas between the supporting component and the thrust disc moves from one side of the supporting component to the other side, the gas groove can supplement the gas and pressure of the next supporting component, the pressure at the fixed ends of the inner and outer guide foils is increased, and acting force between the supporting component and the thrust disc is ensured.
Drawings
Fig. 1 is a schematic view of the axial foil air thrust bearing and rotor position provided by the present invention.
Fig. 2 is an exploded view of an axial foil air thrust bearing provided by the present invention.
Fig. 3 is a schematic structural view of a support member in the axial foil air thrust bearing provided by the invention.
Fig. 4 is a schematic view of a partial structure of an axial foil air thrust bearing provided by the invention.
Fig. 5 is a schematic diagram of a wave foil provided by the present invention.
Fig. 6 is a schematic illustration of a corrugated foil of a bearing housing provided by the present invention.
1. Bearing frame, 2, top foil gasket, 3, ripples foil, 4, top foil, 5, water conservancy diversion foil, 6, interior water conservancy diversion foil, 7, outer water conservancy diversion foil, 8, first arch, 9, second arch, 10, first air passage, 11, rotor, 12, thrust disk, 13, bearing fixed orifices, 14, air groove, 15, second air passage.
Detailed Description
The following description of the several embodiments of the present application, while clearly and fully describing the embodiments of the present invention, is provided by way of illustration, and is not intended to limit the invention to the particular embodiments disclosed, but to limit the scope of the invention to all other embodiments available to one of ordinary skill in the art without inventive faculty based on the embodiments disclosed herein.
Unless a direction is defined solely, the directions of up, down, left, right, etc. referred to herein are all directions of up, down, left, right, etc. as shown in fig. 4 in the embodiment of the present application, and if the specific gesture changes, the directional indication changes accordingly. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Furthermore, in various embodiments of the present disclosure, the same or similar reference numerals denote the same or similar components.
In the present invention, unless explicitly specified and limited otherwise, the terms "coupled," "affixed," and the like are to be construed broadly, and for example, "coupled" may be either fixedly coupled, detachably coupled, or integrally formed, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of the claimed invention.
Example 1
The embodiment provides an axial foil air thrust bearing, which comprises a thrust disc 12 and a bearing seat 1, as shown in figures 1, 2, 3 and 4, wherein the bearing seat 1 is of a circular ring structure, the bearing seat 1 and the thrust disc 12 are coaxially arranged, the thrust disc 12 is sleeved on a rotor 11,
the supporting surface of the bearing seat 1 faces the thrust disc 12, a plurality of supporting components are uniformly arranged on the supporting surface of the bearing seat 1 in a circumferential direction,
each supporting component comprises a wave foil 3, a top foil 4 and a guide foil 5 which are sequentially arranged from the supporting surface of the bearing seat 1 towards the direction of the thrust disc 12, the guide foil 5 comprises an inner guide foil 6 and an outer guide foil 7 which are concentrically arranged, and an air groove 14 is arranged between the inner guide foil 6 and the outer guide foil 7, and the inner guide foil 6 and the outer guide foil 7 are mutually independent.
In the existing axial foil air thrust bearing design, the supporting part generally comprises a wave foil 3 and a top foil 4, and the top foil 4 adopts an integral design; when the radial air bearing swings radially, the distance between the thrust disc 12 and the outer side of the top foil 4 is reduced, under the action of the air film, the outer side of the top foil 4 drives the inner side of the top foil 4 to deviate towards the direction of the bearing seat 1 due to the integrated design of the top foil 4, so that the gap between the inner side of the top foil 4 and the thrust disc 12 is increased, and the bearing capacity of the axial foil air thrust bearing on the thrust disc is reduced.
In addition, in the conventional design, during the axial foil air thrust running, air enters between the top foil 4 and the thrust disk 12 through the gap between the axial foil air thrust bearing and the rotor 11 and the second air passage 15 formed in the bearing housing 1, and between the top foil 4 and the thrust disk 12, air moves from the second fixed end of the top foil 4 to the second free end, and a situation where pressure becomes small occurs between the support members adjacent in the circumferential direction.
The design provided by the invention is that the top foil 4 and the guide foil 5 are arranged in the axial foil air thrust bearing, and the guide foil 5 is divided into an independent inner guide foil 6 and an independent outer guide foil 7. When the radial air bearing swings radially, the distance between the thrust disc 12 and the outer guide foil 7 is reduced, the wave foil 3 extends towards the first free end, and the inner guide foil 6 and the outer guide foil 7 are independent, so that the deflection of the outer guide foil 7 does not influence the action of the inner guide foil 6, and the inner guide foil 6 can still maintain the bearing capacity of the thrust disc 12. The design of separating the inner guide foil 6 and the outer guide foil 7 increases the stress area of the supporting component, so that the acting force of the supporting component is more uniform.
By adopting the design of the inner guide foil 6 and the outer guide foil 7, when the gas between the supporting component and the thrust disk 12 moves from one side of the supporting component to the other side, the design of the gas groove 14 can play a role in supplementing the gas and pressure of the next supporting component, the pressure of the fixed ends of the inner guide foil 6 and the outer guide foil 7 is increased, and the acting force between the supporting component and the thrust disk 12 is ensured.
The working process of the axial foil air thrust bearing is as follows: when the rotor 11 rotates together with the thrust disc, air forms a gas pressure, i.e. a gas film, with viscosity between the thrust disc and the axial foil air thrust bearing, and the gas film pressure is increased by the axial foil air thrust bearing; by arranging the air groove 14 between the inner guide foil 6 and the outer guide foil 7, air can enter one supporting component through the air groove 14, and the pressure of the third fixed ends of the inner guide foil 6 and the outer guide foil 7 in the adjacent supporting component is increased; when the rotor 11 swings radially, the air gap between the outer guide foil 7 and the thrust disc 12 is changed, and the bearing capacity between the inner guide foil 6 and the thrust disc 12 is not affected, so that the bearing capacity of the support part on the thrust disc 12 is more uniform, and the axial movement of the rotating shaft can be effectively prevented.
In a specific embodiment, 9 supporting members may be selectively disposed, and the width of the air groove 14 is 0.5-1.5 mm.
Example 2
This embodiment provides an axial foil air thrust bearing which differs from embodiment 1 in that:
the thickness of the inner guide foil 6 is the same as the thickness of the outer guide foil 7, and the thickness of the inner guide foil 6 and the outer guide foil 7 is greater than the thickness of the top foil 4. The design of the inner guide foil 6 and the outer guide foil 7 enables the bearing capacity of the supporting component to be more uniform, the design of the top foil 4 can prevent gas from leaking from the wave foil 3 to the outside of the axial foil air thrust bearing, the bearing capacity of the axial foil air thrust bearing is improved, and the thickness of the inner guide foil 6 and the thickness of the outer guide foil 7 are larger than the thickness of the top foil 4 based on the functions of different foils.
Specifically, the thickness of the top foil 4 may be selected to be 0.1 to 0.2mm according to experience.
Example 3
This embodiment provides an axial foil air thrust bearing which differs from embodiment 1 in that:
as shown in fig. 5, the wave foil 3 includes a plurality of first protrusions 8 and second protrusions 9 that are parallel and spaced apart, one end of the wave foil 3 is a first fixed end, the other end of the wave foil 3 is a first free end, and the first fixed end is fixed on the supporting surface of the bearing seat 1, for example, the first fixed portion of the wave foil 3 may be fixed on the supporting surface of the bearing seat 1 by welding; the first free end extends freely.
Empirically, the cross section of the first fixed end may be angled 45 ° from the cross section of the first free end.
Example 4
This embodiment provides an axial foil air thrust bearing which differs from embodiment 3 in that:
as shown in fig. 5, the width of the first protrusion 8 is larger than the width of the second protrusion 9, and the height of the first protrusion 8 is larger than the height of the second protrusion 9. Through setting up the protruding structure of two kinds of width and degree of depth, form cascaded resistance to the air film, better prevent the axial float of rotor 11.
Specifically, the width of the first protrusion 8 may be selected to be 2-3 mm, and the width of the second protrusion 9 may be selected to be 1.5-2.5 mm.
Example 5
This embodiment provides an axial foil air thrust bearing which differs from embodiment 1 in that:
the corrugated foil 3 is provided with a plurality of first air passages 10 along the circumferential direction of the bearing seat 1, so that the corrugated foil 3 is arranged in a single piece in multiple rows.
Example 6
This embodiment provides an axial foil air thrust bearing which differs from embodiment 3 in that:
in each support part, a top foil washer 2 is also arranged on the support surface of the bearing housing 1 for fixing and supporting the top foil 4, and the top foil washer 2 is close to the first free end of the wave foil 3, and the top foil washer 2 is arranged along the radial direction of the bearing housing 1. By providing the top foil backing sheet 2, the top foil 4 is advantageously inclined to the wave foil 3 in a suitable manner, optimizing the load-carrying capacity of the support member. One end of the top foil 4 is a second fixed end, the other end of the top foil 4 is a second free end, and the second fixed end is fixed on the top foil gasket 2.
Empirically, the cross section of the second fixed end may be at an angle of 40 ° to the cross section of the second free end.
Example 7
This embodiment provides an axial foil air thrust bearing which differs from embodiment 6 in that:
one ends of the inner guide foil 6 and the outer guide foil 7 are third fixed ends, the other ends of the inner guide foil 6 and the outer guide foil 7 are third free ends, and the third fixed ends are fixed on the second fixed ends of the top foil 4 and are positioned above the top foil gaskets 2.
Empirically, the cross section of the third fixed end forms an included angle of 40 degrees with the cross section of the third free end.
Example 8
This embodiment provides an axial foil air thrust bearing which differs from embodiment 6 in that:
the arc length of the top foil 4 is smaller than the arc length of the guide foil 5. This arrangement facilitates the gas to enter the surface of the top foil 4 via the gas slots 14, better supplementing the air and pressure for the inner and outer guide foils 6, 7 of the next support member.
Example 9
This embodiment provides an axial foil air thrust bearing which differs from embodiment 6 in that:
as shown in fig. 6, in order to obtain a better desired gas film, the gas film pressure can be increased, and the bearing capacity can be improved. The bearing seat 1 is provided with a plurality of bearing fixing holes 13 and a second air passage 15, the bearing fixing holes 13 are used for installing the bearing seat 1 on a bearing fixing part, the bearing fixing part can be an end cover and the like, and the second air passage 15 is used for guiding gas into the bearing.
Example 10
This embodiment provides an axial foil air thrust bearing, which differs from embodiment 9 in that:
as shown in fig. 6, the bearing fixing hole 13 and the second air passage 15 are provided in pairs, and the bearing fixing hole 13 and the second air passage 15 are provided in sequence along the radial direction of the bearing housing 1. It is advantageous to prevent turbulence from being generated when air flows rapidly.
Example 11
The present embodiment provides an air compressor comprising the axial foil air thrust bearing provided in any one of embodiments 1-10.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that this application is not limited to the forms disclosed herein, but is not to be construed as an exclusive use of other embodiments, and is capable of many other combinations, modifications and environments, and is capable of changes within the scope of the inventive subject matter, either as a result of the foregoing teachings or as a result of knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims (10)

1. An axial foil air thrust bearing is characterized by comprising a thrust disc and a bearing seat, wherein the bearing seat and the thrust disc are coaxially arranged, the thrust disc is sleeved on a rotor,
the supporting surface of the bearing seat faces the thrust disc, a plurality of supporting components are uniformly arranged on the supporting surface of the bearing seat in a circumferential direction,
each supporting component comprises a wave foil, a top foil and a guide foil which are sequentially arranged from the supporting surface of the bearing seat towards the thrust disc, wherein the guide foil comprises an inner guide foil and an outer guide foil which are concentrically arranged, an air groove is arranged between the inner guide foil and the outer guide foil, and the inner guide foil and the outer guide foil are mutually independent.
2. An axial foil air thrust bearing as defined in claim 1, wherein the inner and outer guide foils have the same thickness, the inner and outer guide foils having a thickness greater than the top foil.
3. An axial foil air thrust bearing as defined in claim 1, wherein the wave foil includes a plurality of parallel and spaced apart first and second projections, the projections of the first and second projections facing in the direction of the thrust disk;
one end of the wave foil is a first fixed end, the other end of the wave foil is a first free end, the first fixed end is fixed on the supporting surface of the bearing seat, and the first free end extends freely.
4. An axial foil air thrust bearing as claimed in claim 3, wherein the width of the first projection is greater than the width of the second projection, and the height of the first projection is greater than the height of the second projection.
5. An axial foil air thrust bearing as defined in claim 1, wherein said corrugated foil is provided with a plurality of first air passages along the circumferential direction of the bearing housing.
6. An axial foil air thrust bearing according to claim 3, wherein in each support member, a top foil washer is further provided on the support surface of the bearing housing for securing and supporting the top foil, and the top foil washer is adjacent the first free end of the wave foil, and the top foil washer is disposed along the radial direction of the bearing housing; one end of the top foil is a second fixed end, the other end of the top foil is a second free end, and the second fixed end is fixed on the top foil gasket.
7. An axial foil air thrust bearing as defined in claim 6, wherein one end of the inner and outer guide foils is a third fixed end, the other ends of the inner and outer guide foils are third free ends, and the third fixed end is fixed to the second fixed end of the top foil above the top foil spacer.
8. An axial foil air thrust bearing as defined in claim 1, wherein the arc length of the top foil is less than the arc length of the guide foil.
9. An axial foil air thrust bearing as defined in claim 1, wherein the bearing housing is provided with a plurality of bearing mounting holes and a second air passage; and the bearing fixing hole and the second air passage are arranged in pairs, and the bearing fixing hole and the second air passage are sequentially arranged along the radial direction of the bearing seat.
10. An air compressor comprising an axial foil air thrust bearing as claimed in any one of claims 1 to 9.
CN202311757224.2A 2023-12-20 2023-12-20 Axial foil air thrust bearing and air compressor Active CN117450167B (en)

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CN117450167B CN117450167B (en) 2024-03-12

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CN216306249U (en) * 2021-07-29 2022-04-15 深圳飞磁科技有限公司 High-speed air suspension centrifugal blower
KR20220094815A (en) * 2020-12-29 2022-07-06 현대위아 주식회사 Gas foil thrust bearing
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6158892A (en) * 1999-08-25 2000-12-12 Capstone Turbine Corporation Fluid film thrust bearing having integral compliant foils
US20040207158A1 (en) * 2001-07-06 2004-10-21 Agrawal Giridhari L. Hydrodynamic foil face seal
WO2015026655A1 (en) * 2013-08-20 2015-02-26 Borgwarner Inc. Air bearing arrangement
US20170321744A1 (en) * 2016-05-09 2017-11-09 Hyundai Motor Company Thrust bearing for vehicle air compressor
CN106763151A (en) * 2017-01-05 2017-05-31 湖南大学 A kind of thrust air foil bearing with high bearing capacity
CN113227591A (en) * 2018-12-20 2021-08-06 株式会社Ihi Thrust foil bearing
CN212928493U (en) * 2020-08-25 2021-04-09 上海优社动力科技有限公司 Thrust air foil bearing
KR20220094815A (en) * 2020-12-29 2022-07-06 현대위아 주식회사 Gas foil thrust bearing
CN216306249U (en) * 2021-07-29 2022-04-15 深圳飞磁科技有限公司 High-speed air suspension centrifugal blower
CN113513531A (en) * 2021-08-12 2021-10-19 珠海格力电器股份有限公司 Gas thrust bearing, bearing assembly, compressor, air conditioner and automobile
CN217814534U (en) * 2021-08-27 2022-11-15 天津飞旋科技股份有限公司 Thrust air foil bearing and axial supporting structure
CN115405620A (en) * 2022-09-19 2022-11-29 珠海格力节能环保制冷技术研究中心有限公司 Dynamic pressure gas thrust bearing, rotor assembly and compressor
CN116608203A (en) * 2023-07-20 2023-08-18 山东华东风机有限公司 Radial double-wave foil air bearing

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