CN209705082U - Support the foil gas bearing device of rotor - Google Patents
Support the foil gas bearing device of rotor Download PDFInfo
- Publication number
- CN209705082U CN209705082U CN201821702174.2U CN201821702174U CN209705082U CN 209705082 U CN209705082 U CN 209705082U CN 201821702174 U CN201821702174 U CN 201821702174U CN 209705082 U CN209705082 U CN 209705082U
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- Prior art keywords
- recess
- rotor
- foil
- top foil
- bearing
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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
- F16C17/04—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
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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
For the foil gas bearing of rotor, to high load capability and firm bearing arrangement demand with higher, especially when speed is higher.Foil gas bearing device (10) supports rotor (2 by gas (G), 12), rotor-side top foil device (14) with the bearing surface (8) for limiting rotor, and top foil device is supported on supporting element (6, 16) the convex block foil device (15) on, it include the angled perimeter region (α 1) that at least one top foil device is formed according to foil gas bearing device provided by the utility model, extend on its direction of rotation between bearing surface (16) and bearing surface (16) and is terminated in bearing surface, and the top foil device on upside (14a) is made of the recess (14.1) radially outward to extend internally.Firm bearing can be provided in this way when active force is larger and/or speed is higher.
Description
Technical field
The utility model relates to a kind of devices by air supporting rotor, such as: air suspension, especially for oil-free
Bearing arrangement.In particular, the utility model is a kind of for supporting the device of rotor under high axial force and/or high revolving speed.Most
Afterwards but it is of an importance that, the utility model further relates to the use of axial foil gas bearing.Especially the utility model
The device and method of the preamble of involved requirement.
Background technique
In order to support rotor, especially under high axial force and/or high revolving speed, it has proved that the foil gas bearing
Or foil bearing is advantageous.For example, using foil gas bearing when the rotor speed of pump is higher.
By means of foil gas bearing, the fluctuation of load of axial (along the rotary shaft of rotor) can receive.Traditional foil
Piece gas bearing is made of the layers of foil of surface relatively flat.Especially surface (top foil) limit of stationary rotor installation
Air gap is determined and elastic deformation may occur and pressure can be generated according to revolving speed in air gap.In particular, rotor and phase
The pressure field in bearing clearance between adjacent top foil leads to the deformation of paillon, this will affect the performance of bearing.
Therefore, the characteristic of foil gas bearing is predefined by the interaction of foil configuration and rotor and paillon, it is special
It is not axial carrying capacity.Therefore, when designing and optimizing foil gas bearing, foil can be accurately influenced and optimized as far as possible
Piece is of great significance to the effect of rotor and the pressure ratio of composition.
2 375 089 B1 of patent specification EP describes a kind of dynamic foil gas bearing with chip foil, should
Paillon has clamping face and connection surface.
Based on the prior art, it is especially considering that the requirement of axial bearing arrangement, exists and improve foil bearing technology and spy
A possibility that sign.
Utility model content
The purpose of the utility model is to provide the devices of a kind of gas bearing for rotor or air bearing, especially exist
High axial force and/or at high speed supports rotor using the device in high-load situations, this.Purpose is at least in axial side
High speed rotor is effectively supported in the case where oil-free upwards, so that rotor is able to bear relatively high axial force, especially
There is good side effect in terms of friction or heat exploitation and in terms of stability.
Pass through defined in foil gas bearing device most basic in the utility model and the requirement of individual program
One program technic realizes this target.The favourable improvement of the utility model is explained in various further limit.Unless there are
Clearly forbid, otherwise exemplary characteristics described below can be combined with each other.
A kind of foil gas bearing device is provided, there can be the branch for limiting rotor by means of air supporting rotor
The rotor-side top foil device of bearing surface, and the convex block paillon device for being supported on top foil device on bearing block.
Convex block paillon device is preferably configured for the pressure in response to being applied to bearing surface and deforms top foil device.
According to the utility model, foil gas bearing device at least has an inclination week formed by top foil device
Border region, the top foil device extend and terminate in bearing surface on the direction of rotation between bearing block and bearing surface,
And the top foil device of top side is equipped with the recess that radially ecto-entad extends and (is especially at least partially radially or Xiang Jing
It is tilted to direction).Or such design correspondingly can be carried out to rotor.Especially under high speed and high load condition, energy
It is enough to provide securely, stable bearing arrangement.
Compared with previous certified technology, especially with the axial bearing foil with flexible surface described above
It compares, the utility model can extend foil gas axis by simple device under conditions of keeping higher security of system
That holds uses field.In such a case, it is possible to realize high loaded capability.In addition, the friction loss of bearing can be minimum
Change.In particular, this combination technique feature of " inclined neighboring area " and " recess " can improve the performance of bearing.Especially
It is that axial foil bearing can provide helical groove structure.
Usually, there are two foil members for traditional axial foil gas bearing tool: the top foil and described
Convex block paillon, wherein top foil be located at it is flexible, damping convex block paillon on, and wherein top foil and rotor in axis
Air film is defined or limited jointly to two sides.Therefore, flexible convex block paillon can permit (elasticity) deformation of top foil, especially exist
Under the action of pressurization or pressure (pressure field of air film).
There are two different regions (region) for top foil tool: zone of convergence, for reducing between top foil and rotor
Air gap；The land regions (at least approximately) arranged in parallel with rotor.By the two regions, air film can be increased
In pressure, and can also limit or increase the bearing capacity of bearing, rotation function in particular according to rotor or according to
The function of revolving speed.
The utility model can obtain higher stability and good damping and load-carrying properties by this design, push up
A recess, especially channel-shaped recess is arranged in the upside of portion's paillon device, when rotor and top foil device have relative rotation
When movement, gas is inwardly conveyed with pump.
Recess is beneficially based on rotor and works relative to the rotation of top foil device.Recess can be located on rotor
Rather than it is located on top foil device.Recess is suitable for delivering gas in the air gap of bearing (especially: pumping gas), especially
It is to have the effect of increasing the gas film pressure in air gap.
Recess or groove are partly spirally distributed by a kind of advantageous approach.Recess can be formed or be arranged as to
The pumping groove of interior (radially-inwardly).Recess can start in the positive outside of outer radius (outer edge).Particularly, recess can prolong
It stretches or is arranged to inside radius (inward flange) than top foil device closer to radial position.For example, recess extends to top foil
The half (half of radical length) of the radial extension of sheet devices.
Recess, special groove is in a manner of advantageously in tangential direction with the angle arrangement between 95 ° and 175 °.This is provided
Higher efficiency, especially optimizes pump action.
Recess, especially groove can be arranged or are mounted on from the direction in the outer part of inside, and at least partly section is being cut
On line direction and/or in the radial direction.
Recess, especially groove can be arranged in opposite direction or be installed, at least partly in tangential direction and/or diameter
To on direction.
Configuration according to the present utility model, for example, the geometry of the recess on top foil device can be very easily
Optimize and adapt to specific service condition or desired pressure condition or relative velocity or gas density, especially maximizes carrying
Ability and/or improve efficiency (reduce loss of effectiveness).It is finally reached the thermally equilibrated purpose of optimization.It in other words, especially can be with
Ensure to radiate by simpler mode.In addition, the recess of the utility model can manufacture in a relatively simple manner, especially
By a kind of simple, lower-cost manufacture.
The recess of the utility model is mounted on the static arrangement of gas bearing, bendable especially in the form of helicla flute
It, can be bright especially by inclined neighboring area (suitable for reducing the convergence neighboring area of air gap) combination on the surface of song installation
It is aobvious to improve bearing capacity and runnability.Unlike the utility model, in having used in the prior art not so far
Same layout, i.e. surface of revolution and static surface parallel arrangement, and/or a substantially flat is installed at the top of top foil
Plane.
In this case, the device for receiving the power axially aligned also can be set into foil gas bearing device.
In this case, foil gas storage device is referred to as foil gas axial bearing arrangement.
Hereinafter, the design advantage of recess is described in detail.
In design embodiment, recess is set in rotor rotation, for radially-inwardly conveying (or pumping) gas.This
Be conducive to generate relatively high gas pressure or air-flow.
In design embodiment, recess is set in rotor rotation, in the center cavity of foil gas bearing device
Pressure is formed, the paillon device is from outside around the die cavity of foil gas bearing device.Gas can controllably be drawn in this way
Enter the central area of bearing.
In design embodiment, recess can be designed as groove or notch.It can manufacture in a relatively simple manner in this way
Recess.Groove or notch can also carry out individually designed in geometry, shape and depth.
In design embodiment, recess has constant depth, the half of recess length is at least greater than in longitudinal sections, especially
It is until the inner end or front of recess.This is but also recess inner most all has constant flox condition.
In design embodiment, recess has a fixed exit region at corresponding inner end, the exit region
Depth constantly reduces.This is also particularly conducive to air-flow and flows into the gap between two planes from recess.This advantageously forms stabilization
Air film.
Hereinafter, the convenience of recess will be described in further detail to calibration function.
In design embodiment, extend in radial directions to notch part.This makes it possible to inwardly effectively be pumped.
In design embodiment, at least partially bending extends recess.In design embodiment, recess is at least partly in
Spiral extension.This is rubbing, and also provides advantage in terms of the conservation of momentum and as homogeneously as possible formation pressure condition.
In design embodiment, recess is at least partly radially extended to inwardly from outside, and radius of curvature constantly reduces.
In design embodiment, the radius of curvature of recess radially persistently becomes larger.This is also beneficial to externally to foil gas axis
Bearing apparatus supply gas, especially in the case where top foil device is in static installation.
In design embodiment, the radius of curvature of recess is minimum radially inward.This is conducive in preferable flox condition
Lower inwardly injection gas, especially in center cavity.
In design embodiment, corresponding recess at least partly with linear extension without curvature (radius of curvature zero),
Especially radially.This is also beneficial to the supply of gas, in particular according to the implementation example or top foil of revolving speed or rotor
The distance between sheet devices and rotor.
In design embodiment, recess extends between the inward flange and outer edge of top foil device.This also comply with from
Specific standard of the external-to-internal to the respective flow path of center cavity.
In design embodiment, aligned recesses in the following manner can be by recess on the relative rotation direction of rotor
Inwardly guidance to center cavity, especially radius of curvature constantly reduces.This is also capable of providing good pump action.
In design embodiment, the angle of groove is between 95 ° and 175 °.This is in stability and load capacity and smoothly
Property aspect also have good effect.
Hereinafter, the layout advantage of recess is described in further detail.
In design embodiment, recess is from one in the outer edge of top foil device/at least extend to top foil
The half of the width of device, that is, at least up to half of top foil device inward flange distance.This is but also fluid can be based on
Phenomenon generates stablizing effect, changes in particular according to cross-sectional profiles in the radial direction.Can also according to the design of rotor come
Select the radical length of recess.
In design embodiment, recess at least extends to its 1/3 width from the outer edge of top foil device.This can be incited somebody to action
Gas is pumped in periphery area and forms more inside air film on relatively large radial section without passing through edge
Or convex block interferes air film.Due to interaction required between top foil device and rotor, may more or less need wider
Air film (especially in the case where no recess).
In design embodiment, recess at least extends to 2/3 width of rotor from outer edge.It is opposite that this is also beneficial to pumping
More gas has Beneficial Effect to its bearing capacity.
In design embodiment, recess at most extends to the half of rotor width from the outer edge of rotor.It in this way can be in diameter
Inner space is left on direction, turbulent flow should be lacked as far as possible or should use up by being capable of forming the air film unrelated with recess, especially air film
It may be upset less by recess.
In design embodiment, recess extends to inward flange from the outer edge of rotor.This can be defeated to gas internally
Generation is sent targetedly to influence very much, it is possible thereby to promote the influence being distributed to gas, in particular according to center cavity volume
Design or size.It especially can be by minimum friction forces.
In design embodiment, recess is from the half of one in rotor outer edge/at least extend to rotor width, i.e., extremely
The half of few distance for reaching/arriving rotor inward flange.This also makes it generate stable effect on the basis of fluid phenomenon, special
It is not according to cross-sectional profiles variation in the radial direction.The radical length of recess can also be selected according to the design of rotor.
In design embodiment, recess at least extends to from the 1/3 of rotor width from outer edge.This can pump gas
More inside air film is formed into periphery area and on relatively large radial section without dry by edge or convex block
Disturb air film.Due to interaction required between top foil device and rotor, it may more or less need broader air film (special
It is not in the case where no recess).
It designs in embodiment, recess at least extends to 2/3 width of rotor from outer edge.This is also beneficial to pump relatively more
Gas, and to bearing capacity have Beneficial Effect.
In design embodiment, recess at most extends to the half of rotor width from the outer edge of rotor.It in this way can be in diameter
Inner space is left on direction, turbulent flow should be lacked as far as possible or should use up by being capable of forming the air film unrelated with recess, especially air film
It may be upset less by recess.
In design embodiment, recess extends to inward flange from the outer edge of rotor.This can be defeated to gas internally
Generation is sent targetedly to influence very much, it is possible thereby to promote the influence being distributed to gas, in particular according to center cavity volume
Design or size.It especially can be by minimum friction forces.
Hereinafter, the structural advantage of conical region is described in further detail.
In design embodiment, peripheral region is tilted since the surface of bearing block.It can design on bearing block without foil
Segment is conducive to adjust pressure condition.
In design embodiment, multiple inclined neighboring areas are arranged with the arrangement of rotational symmetry, and especially two,
Three or four inclined neighboring areas, each neighboring area are spaced apart with identical rotation angle.This is to flatness and stabilization
Property aspect also benefit.
In design embodiment, foil gas bearing device has the circumferential segment without foil, rotation of the circumferential segment in rotor
Side is upwardly arranged at before (corresponding) inclined neighboring area and in most probable in lesser rotation angle (circumferential length
Degree) on extend.In terms of especially having the advantages that the mass transfer of bearing and damping characteristic in terms of the pump action of recess.
Hereinafter, layout advantage of the recess relative to tilting zone will be described in further detail.
In design embodiment, some recesses () are arranged in taper peripheral region.In this way, it can produce
Pump action, especially in the case where pressure generally uniform and not unfavorable pressure oscillation.It can be right in radial directions
The air cushion that standard is formed in inclined neighboring area, especially formed in gas film radially further higher pressure it
Before.This point is unfavorable for rubbing and generate heat.
In design embodiment, recess is arranged in the whole circumference length of tapered peripheral part.It can optimize so same
Step operation or even running, especially under high pressure.
In design embodiment, recess is arranged in taper peripheral region and in a stable manner from inclined external zones
Domain enters the flat peripheral region of top foil device.This also provides advantage in terms of smoothness and uniform accumulation of pressure.
In design embodiment, foil gas bearing device is provided with only by gas, especially by air, for turning
The oil-free axial bearing of son.Bearing arrangement can be further simplified or optimized in this way.Further, it is also possible to develop wider application
Range.
In design embodiment, top foil device is flexible.Top foil device can be by bendable material system
At.Then, material property and/or the characteristic of the determined by layout bearing of convex block paillon device can also be passed through.In this way,
Damping function also may be implemented by means of top foil device, support top foil on chip in particular according to by convex block paillon device
The mode set.
In design embodiment, the recess of top foil device is in statically to arrange relative to rotor.Then, by rotor
Rotation mode determines corresponding rotary motion.Finally it is of an importance that simple, firm, low-dimensional can be provided in this way
Protect the bearing arrangement of frequency.
Above-mentioned purpose can also be realized by foil gas bearing device, the foil gas bearing device be configured to by
In air supporting rotor, wherein rotor-side top foil device is used to limit the bearing surface of rotor, and has top foil
Device is supported on the convex block paillon device on bearing block, foil gas bearing device at least have one by top foil device shape
At angled circumferential region, which extends on the direction of rotation between bearing block and bearing surface and terminates at bearing
In face, and the structure design of rotor has the recess radially extended from outside to inside.Recess is set when rotor rotates so as to edge
Gas is radially-inwardly conveyed, wherein cove design is notch or notch, and further groove is least partially bent at (especially spiral
Shape), recess at least extends to the 1/3 of top foil device width from outer edge, wherein inclined peripheral region is from bearing block
Surface starts.Wherein, foil gas storage bearing set before inclined neighboring area have along direction of rotation arrange without paillon
Periphery section, wherein recess also is disposed in inclined neighboring area.This structure contains above-mentioned multiple advantages.
Above-mentioned purpose can also be by using foil gas bearing device, especially previously described foil gas bearing dress
It sets to realize.The foil gas bearing device only passes through gas and axially supports rotor in the case where oil-free, wherein foil gas
The top bearing arrangement of bearing arrangement is arranged such that relative to the direction of rotation of rotor and rotor in top foil device
Top layout recess in a rotational direction obliquely inwardly alignment, especially in the static arrangement of top foil device,
And top foil device at least defines an inclined peripheral region.Above-mentioned advantage can also be made it have in this way.
Above-mentioned purpose can also be come by foil gas bearing device, especially previously described foil gas bearing device
Realize, which is at least made of the top foil device in an angled perimeter region, in bearing block and
Extend between bearing surface along direction of rotation and terminate at bearing surface, and by by the top foil device of upside along axial structure
Cause the recess that (being especially at least partially radially or favour radial direction) extends from outside to inside.Before this structure also has
The advantages of stating.
Above-mentioned purpose can also realize that the rotor is mounted on the device by air supporting rotor by a kind of rotor,
Paillon device with the supporting plane for limiting rotor, and the convex block paillon dress for being supported on paillon device on bearing block
It sets.Rotor is characterized in that rotor or the device for being used to support rotor at least have the inclination circle formed by paillon device
All regions, the paillon device extend and terminate in bearing surface on the direction of rotation between bearing block and bearing surface, and
The structure design of rotor has the recess radially extended from outside to inside.
Above-mentioned purpose can also be realized by a kind of method of mounting foil air bearing devices, the foil gas bearing
Device, especially previously described foil gas bearing device, by air supporting rotor, its step are as follows:
The convex block paillon device that top foil device is used to support on bearing block is provided；
The top foil device that rotor-side is arranged is positioned opposite and be fixed on convex block paillon device, to define rotor
Bearing surface；
Further step:
The angled perimeter region formed by least one top foil device is formed, in bearing block and bearing surface
Between extend and terminate at bearing surface along direction of rotation, wherein top foil device arrange when it is noted that: be arranged in top foil
Recess at the top of device radially extends from outside to inside, especially twist.This structure makes it have above-mentioned advantage.
In design embodiment, this method further includes constructing the upper structure of top foil device by introducing recess.
The characteristic of foil gas bearing device can be more specifically adjusted in application case in this way.In particular, axial foil gas
Bearing arrangement can be set to the recess of spiral slot form.
Detailed description of the invention
In following attached drawing, the utility model will be described in further detail, the attached drawing not being expressly recited in various figures
Label can refer to other accompanying drawings.Such as figure:
Fig. 1 is the side cross-sectional view of the schematic diagram of the circumferential segment of foil bearing according to prior art；
Fig. 2 is a part of the foil gas bearing device in design embodiment or the schematic plan view of circumferential segment；
Fig. 3 is the lateral perspective the upper surface of in foil gas bearing schematic device in design embodiment.
Reference signs list
1 traditional foil gas bearing
2 rotors
3 air gaps
4 tops foil (top foil)
5 convex block paillons (the convex block paillon or flexible paillon)
6 bearing blocks
8 bearing surfaces
10 foil gas bearing devices
12 rotors
13 the air gaps
14 top foil devices (pocket top paillon)
On the upside of 14a
14.1 recesses
14.11 inner ends
14.2 top foils
The radial component of 14.3 recesses
15 convex block paillon devices
16 bearing blocks
17 without foil fragment or without paillon neighboring area
18 centrally disposed die cavitys
G gas, especially ambient gas
The inward flange of Ri inside radius or paillon
(centre) interior radial position of recess between Rg inside radius and outer radius
The outer radius or outer edge of R0 paillon device or rotor or bearing
The direction of rotation of α rotor or tangential direction or rotation angle
α 1 assembles inclined periphery or circumferential segment
(sloped region or zone of convergence)
The constant flat periphery α 2 or circumferential segment (the plateau band)
The exterior angle of β recess, especially with respect to tangential direction
The interior angle of γ recess, especially with respect to tangential direction
X is axial
R is radial.
Specific embodiment
Shown in Fig. 1 is traditional foil gas bearing 1, supports rotor 2.In rotor and the top (top of foil 4
Paillon) between formed air gap 3, the gas G of air gap 3, especially with ambient gas or surrounding air filling.Push up the upper lateral confinement of foil 4
The bearing surface 8 for rotor 2 is determined.Top foil 4 is mounted on convex block paillon 5 (the convex block paillon or flexible paillon), because
This in some sense can also be with damping, and supporting lug paillon 5 (being illustrated as dampening compression spring) on bearing block 6.Turn
Son is rotated around foil gas bearing 1.The direction of rotation of rotor or circumferencial direction or corresponding rotation angle are by the angle in Fig. 1
α and arrow indicate.It is axial to be indicated with arrow x, it is radial to be indicated with arrow r.
Top foil 4 does not extend only to bearing surface 8, and at least tool is there are two different parts, that is, the angled perimeter assembled or
Circumferential sectors α 1 (sloped region or zone of convergence), followed by constant flat peripheral or circumferential sectors (referred to as plateau
Area) α 2.
In air gap 3, pressure condition is set according to environmental pressure, relative rotation speed and bearing load.
In Fig. 2,3, foil gas bearing device 10 is described.Top foil device 14 by its upside 14a (especially
Pass through top foil 14.2) bearing surface is limited, wherein top foil device 14 is supported on bearing by means of convex block paillon device 15
On seat 16.
Top foil device 14 has multiple individual recesses 14.1, and especially each form is the recess of groove, recess
Extend on radial component 14.3, according to requiring, which should be significantly less than the radial width of top foil device 14, this be by
The inside radius or inward flange Ri and outer radius or outer edge R0 of paillon device are predetermined.Recess radially-inwardly terminates at inner edge
(centre) interior radial position Rg between edge and outer edge.Corresponding recess extends at the inner end 14.11 on inward flange, especially
It is continuously to extend.
Alternatively, recess 14.1 can also be located on rotor.
For top foil 14.2 or top foil device 14 it is contemplated that following spoken title: groove top paillon.
In the modification shown in Fig. 2 and 3, recess at least partly twist extends, in the diameter of top foil device 14
Extend in the radial width in the range of the 1/4 to 1/3 of width or 1/2, and extends along whole surface.Top foil is on chip
14 are set entirely around periphery setting (in addition to any no paillon periphery section on bearing block 16).
Fig. 2 show two angles of display recess trend.Angle relative to tangential direction usually should be in 95 ° and 175 °
Between.Angle can change its numerical value in radial directions or or keep constant.In the latter case, recess follows
Logatithmic spiral.
Fig. 3 show no foil fragment or without paillon neighboring area 17.The design of no foil periphery section is answered as small as possible.Centre bit
The cavity 18 set radially is connected to environment by these segments 17.Fig. 3 is shown through foil gas bearing device 10
The rotor 12 (dotted line) of installation and the air gap 13 formed between them.
By means of recess 14.1, gas or air can be pumped radially inward, especially for adjusting rotor 12 and top
The characteristic for the air film that foil device 14 is formed especially is used to control when the rotor opposite with the top foil device of static state installation rotates
System flowing and pressure condition.
Claims (9)
1. a kind of foil gas bearing device (10) supports rotor (2,12) by gas (G), on chip by rotor-side top foil
The bearing surface (8) that (14) limit rotor is set, and passes through the top foil device supporting lug paillon dress on bearing block (6,16)
(15) are set,
It is characterized in that, foil gas bearing device includes at least one sloping peripheral region (α formed by top foil device
1), extend and terminate at bearing surface, and top foil device along direction of rotation between bearing block (6,16) and bearing surface (8)
Upside (14a) design have the recess (14.1) extended radially outward or designed on rotor (2,12) and have radially
The recess (14.1) of extension.
2. foil gas bearing device according to claim 1, which is characterized in that when rotor (2,12) rotate, setting
Recess (14.1) to convey gas radially inward；Wherein rotor (2,12) rotate when be arranged recess (14.1), so as to
Pressure is formed in the center cavity (18) of the foil gas bearing device defined outside paillon device；Wherein recess (14.1) is designed as
Groove or notch.
3. foil gas bearing device according to claim 1 or 2, which is characterized in that the recess (14.1) at least portion
Divide and extend in radial direction (r), recess (14.1) is at least partly bent；
Recess at least partly (14.1) twist extends；Wherein recess at least partly (14.1) radially prolongs externally to interior
It stretches, and radius of curvature constantly reduces；Wherein one/radius of curvature of recess (14.1) radially outward persistently becomes larger；Wherein recess
(14.1) one/radius of curvature is radially-inwardly minimum；Wherein corresponding recess at least partly (14.1) does not have with linear extension
There is bending, especially radially；Wherein recess is relative to the angle of tangential direction between 95 ° and 175 °.
4. foil gas bearing device according to claim 1 or 2, which is characterized in that the recess (14.1) is from described
One outer edge (R0) of top foil device extends to the half of the width of the as little as described top foil device, i.e., to as little as institute
State the half of top-paillon device inward flange (Ri)；Or recess (14.1) extends to as little as top foil from outer edge (R0)
1/3 width of device；Or recess (14.1) extends to the 2/3 of as little as top foil device width from outer edge (R0)；Or
Wherein recess (14.1) extends to the one of top foil device maximum width from the one/outer edge (R0) of top foil device
Half.
5. foil gas bearing device according to claim 1 or 2, which is characterized in that the recess (14.1) is from described
One/the outer edge (R0) of rotor extends to the half of the width of the as little as described rotor, i.e., to the extremely rotor inward flange (Ri)
Distance half；Or wherein recess (14.1) from outer edge (R0) at least extends to the 1/3 of rotor width；Or recess
(14.1) 2/3 width of rotor is at least extended to from outer edge (R0)；Or recess (14.1) from the outer edge (R0) of rotor most
Extend to the half of rotor width more.
6. foil gas bearing device according to claim 1 or 2, which is characterized in that tapered peripheral part (α 1) is from axis
The surface for holding seat (6,16) starts；Multiple inclined neighboring areas (α 1) are arranged with the layout of rotational symmetry, and especially two, three
A or four inclined neighboring areas (α 1), under any circumstance each other with the rotation of identical rotation angle；Wherein foil gas
Bearing arrangement (10) has the circumferential segment (17) without paillon arranged along direction of rotation before inclined neighboring area (α 1), prolongs
The rotation angle stretched is answered as small as possible.
7. foil gas bearing device according to claim 1 or 2, which is characterized in that recess (14.1) is arranged in taper
In peripheral portion (α 1)；Or recess (14.1) are set in the whole circumference length of tapered peripheral part (α 1)；Wherein recess
(14.1) it is arranged in inclined neighboring area, is transitioned into top foil device from inclined neighboring area in a continuous manner
(14) in flat peripheral region (α 2).
8. foil gas bearing device according to claim 1 or 2, which is characterized in that the foil gas bearing device
(10) only by gas (G), especially by air, for supporting the axial axis of the rotor (2,12) in oil-free mode
It holds；Wherein top foil device (14) is flexible；Wherein the recess (14.1) of top foil device or rotor (2,12) is in
Static distribution.
9. foil gas bearing device according to claim 1 or 2, which is characterized in that the foil gas bearing device
(10) it is at least made of the top foil device (14) of an angled perimeter region (α 1), in bearing block (6,16) and bearing surface
(8) extend between along direction of rotation and terminate at bearing surface, and by by top foil device (14) edge of upside (14a)
Axial structure extends at the recess (14.1) extended from outside to inside or by the rotor of downside along axial structure recessed from outside to inside
Mouth (14.1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018212490.6 | 2018-07-26 | ||
| DE102018212490.6A DE102018212490A1 (en) | 2018-07-26 | 2018-07-26 | Foil gas storage device for storing a rotor and method and use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209705082U true CN209705082U (en) | 2019-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821702174.2U Active CN209705082U (en) | 2018-07-26 | 2018-10-19 | Support the foil gas bearing device of rotor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209705082U (en) |
| DE (1) | DE102018212490A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007211A (en) * | 2021-02-07 | 2021-06-22 | 北京伯肯当代氢燃料电池实验室有限公司 | High-heat-dissipation-rate foil type axial thrust bearing, combined bearing and heat management method |
| CN114321156A (en) * | 2021-12-31 | 2022-04-12 | 宙斯能源动力科技(大连)有限公司 | Herringbone groove type air dynamic pressure thrust foil bearing |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4682900A (en) * | 1985-12-19 | 1987-07-28 | The Garrett Corporation | Thrust bearing underspring |
| JP2005155802A (en) * | 2003-11-26 | 2005-06-16 | Koyo Seiko Co Ltd | Thrust dynamic bearing |
| US9151322B2 (en) * | 2009-10-06 | 2015-10-06 | Mohawk Innovative Technology, Inc. | Foil journal bearing applicable to high speed machining center |
| JP4961485B2 (en) * | 2010-03-30 | 2012-06-27 | 本田技研工業株式会社 | Dynamic pressure type foil type gas bearing |
-
2018
- 2018-07-26 DE DE102018212490.6A patent/DE102018212490A1/en active Pending
- 2018-10-19 CN CN201821702174.2U patent/CN209705082U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007211A (en) * | 2021-02-07 | 2021-06-22 | 北京伯肯当代氢燃料电池实验室有限公司 | High-heat-dissipation-rate foil type axial thrust bearing, combined bearing and heat management method |
| CN113007211B (en) * | 2021-02-07 | 2021-11-26 | 北京伯肯当代氢燃料电池实验室有限公司 | High-heat-dissipation-rate foil type axial thrust bearing, combined bearing and heat management method |
| CN114321156A (en) * | 2021-12-31 | 2022-04-12 | 宙斯能源动力科技(大连)有限公司 | Herringbone groove type air dynamic pressure thrust foil bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018212490A1 (en) | 2020-01-30 |
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