CN104047956B - Bearing holder (housing, cover) - Google Patents
Bearing holder (housing, cover) Download PDFInfo
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- CN104047956B CN104047956B CN201410096107.0A CN201410096107A CN104047956B CN 104047956 B CN104047956 B CN 104047956B CN 201410096107 A CN201410096107 A CN 201410096107A CN 104047956 B CN104047956 B CN 104047956B
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- Prior art keywords
- housing
- cover
- bearing holder
- paillon foil
- external diameter
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Abstract
Disclose a kind of bearing holder (housing, cover) for being used to support the axle of air cycle machine.The bearing holder (housing, cover) includes external diameter and internal diameter.The external diameter is in the range of 3.222 inches and 3.224 inches.The also included paillon foil holding chamber being provided in the internal diameter of the set.The paillon foil holding chamber includes slit and the hold to axial first and second openings positioned at the slit.The fraction and major part that each include with axially different length in first and second opening.The ratio of the most combination axial length and the axial length of the paillon foil holding chamber is in .19: 1 and .22: in the range of 1.The also included seal attachment part being provided on an axial end for being configured to the bearing holder (housing, cover) of circumferential supporting sealing member.
Description
Background of invention
The application is related to bearing holder (housing, cover), and is more particularly to used for the bearing holder (housing, cover) of air cycle machine (ACM).
ACM is known and including compressed air and transmits air for downstream use (such as aircraft air supply system)
Compressor.A part for air from compressor outlet passes through turbine rotor, so as to drive turbine rotor to rotate.ACM can
Including several rotary shafts by air bearings support.A kind of air bearing of known type includes the paillon foil group supported by bearing holder (housing, cover)
Part.
Brief summary of the invention
In an exemplary of the disclosure, including it is configured to support the bearing of the axle of air cycle machine
Set.Bearing holder (housing, cover) includes external diameter and internal diameter.External diameter is in the range of 3.222 inches and 3.224 inches.It is also included to be provided in set
Internal diameter in paillon foil holding chamber.Paillon foil holding chamber includes slit and opened positioned at hold to axial the first and second of slit
Mouthful.The fraction and major part that each include with axially different length in first and second openings.Most combination
The ratio of axial length and the axial length of paillon foil holding chamber is in .19: 1 and .22: in the range of 1.It is also included be provided in by
It is configured to the seal attachment part on an axial end of the bearing holder (housing, cover) of circumferential supporting sealing member.
In any of the above described other embodiments, wherein a part for external diameter is relative to the external diameter positioned at bearing holder (housing, cover)
The outer radius of origin of radially outer be arc.
In any of the above described other embodiments, outer radius has the origin apart from about 4 inches of external diameter, such as from bearing holder (housing, cover)
Axial end measured by .190 inches and .210 inch ranges in distance.
In any of the above described other embodiments, the scope of the ratio of external diameter and internal diameter 1.143: 1 and 1.145: 1
It is interior.
In any of the above described other embodiments, each of major part of the first and second openings has .265 inches
With the axial length in .305 inch ranges.
In any of the above described other embodiments, each of fractions of the first and second openings have .12 inch with
.16 the axial length in inch range.
In any of the above described other embodiments, each of major part of the first and second openings has .215 inches
Measured with the width in .225 inch ranges, its center line relative to slit.
In any of the above described other embodiments, each of fraction of the first and second openings has .065 inches
Measured with the width in .075 inch ranges, its center line relative to slit.
In any of the above described other embodiments, paillon foil holding chamber has in 2.795 inches and 2.805 inch ranges
Length.
Another exemplary of the disclosure includes the air cycle machine with bearing holder (housing, cover).Bearing holder (housing, cover) includes external diameter
And internal diameter.External diameter is in the range of 3.222 inches and 3.224 inches.The also included paillon foil being provided in the internal diameter of set is protected
Hold chamber.Paillon foil holding chamber includes slit and the hold to axial first and second openings positioned at slit.First and second openings
In the fraction and major part that each include with axially different length.Most combination axial length is kept with paillon foil
The ratio of the axial length of chamber is in .19: 1 and .22: in the range of 1.Also included be provided in is configured to circumferential support sealing
Seal attachment part on one axial end of the bearing holder (housing, cover) of part.
In any of the above described other embodiments, air cycle machine includes paillon foil component, and paillon foil component includes bending section
Divide and the fin on its axial end.
In any of the above described other embodiments, bent portion is contained in slit, and wherein fin is contained in first
In the major part of the second opening.
In any of the above described other embodiments, air cycle machine includes bearing holder (housing, cover) being supported in air cycle machine
At least one O-ring in central opening, O-ring is directly engaged with the external diameter of bearing holder (housing, cover).
In any of the above described other embodiments, air cycle machine includes the sealing supported by seal attachment part
Part.
In any of the above described other embodiments, a part for external diameter is relative to the footpath with the external diameter positioned at bearing holder (housing, cover)
It is arc to the outer radius of outside origin.
In any of the above described other embodiments, outer radius has the origin apart from about 4 inches of external diameter, such as from bearing holder (housing, cover)
Axial end measured by .190 inches and .210 inch ranges in distance.
In any of the above described other embodiments, the scope of the ratio of external diameter and internal diameter 1.143: 1 and 1.145: 1
It is interior.
In any of the above described other embodiments, each of major part of the first and second openings has .265 inches
With the axial length in .305 inch ranges.
In any of the above described other embodiments, each of fractions of the first and second openings have .12 inch with
.16 the axial length in inch range.
In any of the above described other embodiments, paillon foil holding chamber has in 2.795 inches and 2.805 inch ranges
Length.
Brief description
Can DESCRIPTION OF DRAWINGSFigure as follows：
Fig. 1 schematically illustrates example air circulator (ACM).
Fig. 2 shows the cross-sectional view of exemplary shaft bearing sleeve.
Fig. 3 is the view along Fig. 2 line A-A interceptions.
Fig. 4 is the view along Fig. 3 line B-B interceptions.
Embodiment
Fig. 1 schematically illustrates the air including fan or compressor section 12, turbine portion 14 and at least one axle 16 and followed
Ring machine (ACM) 10.Axle 16 is supported by bearing assembly 18, and the bearing assembly includes bearing holder (housing, cover) 20, paillon foil component 22 and O-ring
24.Paillon foil component 22 is circumferentially located in bearing holder (housing, cover) 20.Paillon foil component 22 is configured to the axle that interacts and allow with axle 16
16 rotations, as known in the art.Bearing holder (housing, cover) 20 is supported in ACM10 central opening by way of O-ring 24.
Fig. 2 shows the cross-sectional view of exemplary shaft bearing sleeve 20.Bearing holder (housing, cover) 20 includes outer diameter D 1, internal diameter D2 and crosses over axial length
L1.Paillon foil component 22 is supported by way of the paillon foil holding chamber F in the internal diameter for being arranged on bearing holder (housing, cover) 20 by bearing holder (housing, cover) 20.At this
In embodiment, the scope of the axial length L 1 of bearing holder (housing, cover) 20 at 3.835 inches and 3.845 inches (about 9.741cm to 9.776cm)
It is interior.In addition, paillon foil holding chamber has the total length in the range of 2.795 inches and 2.805 inches (about 7.099cm to 7.125cm)
L2。
The outer diameter D 1 of bearing holder (housing, cover) 20 is selected to provide the required preload relative to O-ring 24.The preload is chosen
So that bearing holder (housing, cover) 20 will be kept in place in operation, and provide ACM10 required buffer level.For example, preload is got over
Height, the buffering in ACM10 operating process is also higher.
In one embodiment, outer diameter D 1 is in 3.222 inches and 3.224 inches (about 8.184cm to 8.188cm) scopes
It is interior.The D1 provides relatively high-caliber buffering for ACM, while ensuring that bearing holder (housing, cover) 20 is kept in place in operation.At this
In individual embodiment, outer diameter D 1 and internal diameter D2 ratio is in the range of 1.143: 1 and 1.145: 1.
With continued reference to Fig. 2, exemplary shaft bearing sleeve 20 includes being configured to the seal attachment part 23 of circumferential supporting sealing member.
In one embodiment, seal is knife edge type seal.Seal can be made up of plastic material, and wrap in one embodiment
Include and be referred to as VespelTMThe material of (DuPont trade mark).Seal is configured to limit each of paillon foil component 22 and ACM10
Air-flow between other parts.A part for bearing holder (housing, cover) 20 is relative to the air-flow phase interaction being configured to being flowed in ACM10
Outer radius 25 is arc.In one embodiment, bearing holder (housing, cover) 20 is adjacent to turbine portion 14 and outer radius 25 provides air-flow
Border.In this embodiment, outer radius 25 has the origin with the Edge Distance R of bearing holder (housing, cover) 20, such as axial direction from bearing holder (housing, cover) 20
End it is measured apart from L3.In one embodiment, it is about 4 inches (about 10.16cm) (in tolerances) apart from R, and apart from L3
In the range of .190 inches and .210 inches (about .483cm to .533cm).
As shown in Fig. 3 (it is the view along Fig. 2 line A-A interceptions), paillon foil holding chamber includes slit 26 and slit 26
To axial end on first and second opening 28,30.In one embodiment, opening 28,30 each includes major part
A, and relative small portion B.Most of A has axial length L 4, and smaller portions B has relatively small axial length L5.
In this embodiment, each major part A has .265 inches and .305 inches (about .673cm to .775cm)
In the range of axial length L 4, its be selected as corresponding to paillon foil component 22 fin 34 length (Fig. 4).Smaller portions L5's
Length is in the range of .12 inches and .16 inches (about .305cm to .406cm).
In this embodiment, most of L4 combination axial length (2 × L4) and paillon foil holding chamber L2 line shaft are to length
The ratio of degree is in .19: 1 and .22: in the range of 1.The ratio and the paillon foil guarantor for being interacted with the fin of paillon foil component 22
Hold total length of the chamber F length (for example, 2 × L4) relative to paillon foil holding chamber L2 related.And this is only one embodiment, permitted
Size more disclosed herein is to be mutually related and therefore can effectively be expressed in terms of ratio.
Fig. 4 is the view along Fig. 3 line B-B interceptions, and shows the mode that wherein paillon foil component 22 is kept by paillon foil chamber F.
Paillon foil component 22 includes along its length being received into the bent portion 32 in slit 26.Slit 26 has to accommodate bent portion
Width W1.In one embodiment, width W1 is in the range of .041 inches and .047 inches (about .104cm to .120cm).
Slit 26 also includes the radius 26R of its bottom, and wherein slit 26 sets the internal diameter to bearing holder (housing, cover) 20 in order to machining
Broken edge 26B.
Paillon foil component 22 also includes the fin 34 on each of which axial end.Fin 34 is configured to be contained in paillon foil holding chamber
First and second opening 28,30 most of A in.Fin 34 has the axial direction of the axial length L 4 corresponding to major part A long
Degree
Fig. 4 also illustrates big and fraction A, B the width of opening 28,30.In this embodiment, most of A has
.215 the width W2 in the range of inch and .225 inches (about .546cm to .575cm), and fraction B have .065 inches and
.075 the width W3 in the range of inch (about .165cm to .191cm), the wherein center line of each of W2 and W3 relative to slit 26
And measure.
In one embodiment, bearing holder (housing, cover) 20 is formed from steel by way of electron discharge processes (EDM) process.In this reality
Apply in example, paillon foil holding chamber F is formed during EDM.After using EDM processes formation paillon foil holding chamber F, internal diameter D2 is entered
One step processes to provide required preload on paillon foil component 22.That is, the size of internal diameter D2 is chosen to by appropriate amount
Power paillon foil component 22 is engaged axle 16 so that paillon foil component 22 will be kept in place in operation, while still allow axle 16 from
By rotating.There is following benefit in the post-processing internal diameter of EDM processes：Remove any residue (example left after EDM processes
Such as burr) and prevent any warpage of bearing holder (housing, cover) 20.
Present disclose provides the bearing holder (housing, cover) interacted with paillon foil component, and O-ring, to provide appropriate preload, this
It is related to ACM buffering and the support of paillon foil component and other benefits.
Although be the same as Example does not have the particular elements shown in figure, the embodiment of the disclosure is not limited to these spies
Fixed combination.It is possible to the feature or component combination in some parts or feature in one embodiment and another embodiment
Use.
It should be appreciated by those skilled in the art that embodiment described above is exemplary and nonrestrictive.
That is, modification of this disclosure is also in the range of present claims.Therefore, claim above should be studied to determine
Its real scope and content.
Claims (15)
1. a kind of bearing holder (housing, cover) for being used to support the axle of air cycle machine, it includes：
External diameter and internal diameter, wherein the external diameter is in the range of 3.222 inches to 3.224 inches；
The paillon foil holding chamber in the internal diameter is arranged on, the paillon foil holding chamber includes slit and the relative axle positioned at the slit
To first and second openings at end, the fraction with axially different length is each included in first and second opening
And major part, wherein the ratio of the most combination axial length and total axial length of the paillon foil holding chamber exists
0.19:1 to 0.22:In the range of 1；With
It is arranged on the seal attachment part on an axial end for being configured to the bearing holder (housing, cover) of circumferential supporting sealing member.
2. bearing holder (housing, cover) as claimed in claim 1 a, wherein part for the external diameter is relative to positioned at the bearing holder (housing, cover)
The outer radius of the origin of the radially outer of the external diameter is arc.
3. bearing holder (housing, cover) as claimed in claim 2, wherein the outer radius has the origin apart from about 4 inches of the external diameter, institute
State origin leave the axial end of the bearing holder (housing, cover) up to 0.190 inch to 0.210 inch range in distance.
4. bearing holder (housing, cover) as claimed in claim 1, wherein the ratio of the external diameter and the internal diameter is 1.143:1 to 1.145:1
In the range of.
5. bearing holder (housing, cover) as claimed in claim 1, wherein each of described major part of first and second opening has
Axial length in 0.265 inch to 0.305 inch range.
6. bearing holder (housing, cover) as claimed in claim 1, wherein each of described fraction of first and second opening has
Axial length in 0.12 inch to 0.16 inch range.
7. bearing holder (housing, cover) as claimed in claim 1, wherein each of described major part of first and second opening has
Width in 0.215 inch to 0.225 inch range, its center line relative to the slit and measure.
8. bearing holder (housing, cover) as claimed in claim 1, wherein each of described fraction of first and second opening has
Width in 0.065 inch to 0.075 inch range, its center line relative to the slit and measure.
9. bearing holder (housing, cover) as claimed in claim 1, wherein the paillon foil holding chamber has 2.795 inches to 2.805 inch ranges
Interior length.
10. a kind of air cycle machine, it includes：
Bearing holder (housing, cover), the bearing holder (housing, cover) includes external diameter and internal diameter, wherein scope of the external diameter at 3.222 inches to 3.224 inches
Interior, the bearing holder (housing, cover) also includes the paillon foil holding chamber being arranged in the internal diameter, and the paillon foil holding chamber includes slit and is located at
Each including with difference in the hold to axial first and second openings of the slit, first and second opening
The fraction and major part of axial length, wherein the line shaft of most combination axial length and the paillon foil holding chamber to
The ratio of length is 0.19:1 to 0.22:In the range of 1, and the bearing holder (housing, cover) also is configured to circumferentially support close including being arranged on
Seal attachment part on one axial end of the bearing holder (housing, cover) of sealing.
11. air cycle machine as claimed in claim 10, it includes paillon foil component, the paillon foil component include bent portion and
Fin on its axial end.
12. air cycle machine as claimed in claim 11, wherein the bent portion is contained in the slit, and wherein institute
Fin is stated to be contained in the major part of first and second opening.
13. air cycle machine as claimed in claim 10, it includes the bearing holder (housing, cover) being supported in the air cycle machine
Central opening at least one O-ring, the O-ring directly engages with the external diameter of the bearing holder (housing, cover).
14. air cycle machine as claimed in claim 10, it includes the seal supported by the seal attachment part.
15. air cycle machine as claimed in claim 10 a, wherein part for the external diameter is relative to positioned at the axle
The outer radius of the origin of the radially outer of the external diameter of bearing sleeve is arc.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361787450P | 2013-03-15 | 2013-03-15 | |
| US61/787450 | 2013-03-15 | ||
| US13/873745 | 2013-04-30 | ||
| US13/873,745 US8926182B2 (en) | 2013-03-15 | 2013-04-30 | Bearing sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104047956A CN104047956A (en) | 2014-09-17 |
| CN104047956B true CN104047956B (en) | 2017-09-01 |
Family
ID=51501218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410096107.0A Active CN104047956B (en) | 2013-03-15 | 2014-03-14 | Bearing holder (housing, cover) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104047956B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102456838B1 (en) * | 2017-11-21 | 2022-10-21 | 한온시스템 주식회사 | Air foil journal bearing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701060A (en) * | 1986-07-24 | 1987-10-20 | The Garrett Corporation | Foil journal bearing cooling |
| CN100451366C (en) * | 2007-01-08 | 2009-01-14 | 哈尔滨工业大学 | Self-regulating type hydrodynamic gas elastic foil bearing |
| US7648279B2 (en) * | 2007-04-12 | 2010-01-19 | Hamilton Sundstrand Corporation | Journal air bearing |
| KR101068542B1 (en) * | 2009-08-31 | 2011-09-28 | 주식회사 뉴로스 | Journal foil air bearing |
| CN101839281B (en) * | 2010-05-27 | 2012-07-11 | 西安交通大学 | Foil dynamical pressure radial gas bearing provided with sectionally-combined composite support |
| CN102943813B (en) * | 2012-11-19 | 2014-12-10 | 湖南大学 | Radial foil piece gas bearing with windowing type bulged support foil piece |
-
2014
- 2014-03-14 CN CN201410096107.0A patent/CN104047956B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104047956A (en) | 2014-09-17 |
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