WO2015073361A1 - Bearing arrangement - Google Patents

Bearing arrangement Download PDF

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Publication number
WO2015073361A1
WO2015073361A1 PCT/US2014/064780 US2014064780W WO2015073361A1 WO 2015073361 A1 WO2015073361 A1 WO 2015073361A1 US 2014064780 W US2014064780 W US 2014064780W WO 2015073361 A1 WO2015073361 A1 WO 2015073361A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing arrangement
bearing
arrangement
spring
turbomachine
Prior art date
Application number
PCT/US2014/064780
Other languages
French (fr)
Inventor
Dietmar Metz
Johannes Hornbach
Original Assignee
Borgwarner Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Borgwarner Inc. filed Critical Borgwarner Inc.
Priority to DE112014004703.1T priority Critical patent/DE112014004703T5/en
Publication of WO2015073361A1 publication Critical patent/WO2015073361A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/162—Bearing supports
    • F01D25/164—Flexible supports; Vibration damping means associated with the bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/059—Roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/16—Other safety measures for, or other control of, pumps
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise

Definitions

  • the invention relates to a bearing arrangement of a rotor shaft, in particular of a turbomachine, as per the preamble of claim 1.
  • EP 1 522 736 A2 has disclosed a generic bearing arrangement for a rotor shaft, which in the case of said document is the rotor shaft of an electric motor-driven turbocompressor.
  • the spring element is provided with a simple, open geometry, it is advantageously possible to realize an additional ventilation function. Furthermore, through the provision of a support ring or support strip (sheet- metal strip), it is possible to prevent excessive wear of the housing surrounding the bearing arrangement.
  • the spring element and the support structure formed for example by the stated support ring may be of multi-part or unipartite form.
  • the spring element may have a corrugated structure and, in a further preferred embodiment, may have an additional smooth region; these may for example be installed in rolled-up form.
  • at least one axial abutment to be provided for axially fixing the rolling bearing. Said axial abutment may be arranged on the spring element or, if provided, on the support ring or on the support structure.
  • the axial abutment may be produced by way of a raised embossment, a retaining lug or a shoulder on the spring element or on the support ring.
  • the turbomachine may for example be an electrically driven compressor, an expander turbine or a classic exhaust-gas turbocharger. According to the invention, the embodiment of the turbomachine is however not restricted to these exemplary embodiments.
  • a spring arrangement through the provision of a spring arrangement, decoupling of the rolling bearing from the surrounding housing is possible even without the provision of oil.
  • Use is preferably made of a soft spring structure which has a damping action, which leads to energy dissipation through friction.
  • the spring arrangement or spring structure may, according to the invention, be similar to those in radial air bearings.
  • the spring element preferably has a natural frequency that lies outside the operating frequency of the turbomachine or of the rotor shaft.
  • Figure 1 is a sectional illustration through a first embodiment of a turbomachine in the form of an electrically driven compressor
  • Figure 2 shows a plan view of a rolling bearing element that is equipped with a spring arrangement according to the invention
  • FIG 3 shows a perspective view of the rolling bearing element as per Figure 2
  • Figure 4 is a sectional illustration through a rolling bearing that is equipped with a spring arrangement according to the invention
  • Figure 5 is a sectional illustration of the installed state of a rolling bearing equipped with a spring arrangement
  • Figure 6 is a schematically highly simplified illustration of an exhaust- gas turbocharger as a further example of a turbomachine according to the invention.
  • FIG 1 shows a possible embodiment of the turbomachine 3 according to the invention in the form of an electrically driven compressor.
  • the turbomachine 3 has a rotor shaft 2 on which a compressor wheel 15 is arranged.
  • a bearing arrangement 1 that conforms to the principles of the present invention is arranged in a bearing housing 18, which bearing housing will be described in detail below on the basis of Figures 2 to 5.
  • the electrically driven compressor 3 furthermore has an electric motor 14, which is merely schematically illustrated in Figure 1 because it does not need to be explained in detail for the explanation of the principles of the present invention.
  • the bearing arrangement 1 in the example has two rolling bearings 4 and 5, which are preferably of identical form.
  • the rolling bearings 4, 5 each have an inner ring 6 which engages around a bearing section 7 or 7 of the rotor shaft 2, as can be seen in particular in Figures 1 and 4.
  • the rolling bearing 4, 5 also has an outer ring 8 which, together with the inner ring 6, guides a multiplicity of rolling bodies, of which one rolling body is indicated representatively in Figures 4 and 5 by the reference sign 13.
  • a spring arrangement 9 is also provided which is arranged on the outer ring 8 of the respective rolling bearing 4 or 5 and which has at least one spring element 10.
  • said spring element 10 of the spring arrangement 9 is in the form of a corrugated spring that is open on one side.
  • the embodiment of the spring element 10 is however not restricted to said embodiment.
  • the spring arrangement 9 also has at least one axial abutment 12.
  • a multiplicity of such axial abutments 12, in particular nine such abutments, is/are provided, said abutments being provided so as to be uniformly circumferentially spaced apart.
  • the one or more axial abutments 12 may in this case be arranged either on the spring element 10 or, if provided, on the support ring 11.
  • an exhaust-gas turbocharger 16 is provided which, as is conventional, has a turbine 17 with a turbine wheel 20, the bearing housing 18 for the mounting of the rotor shaft 2, and a compressor 19 with a compressor wheel 21, wherein the compressor wheel 21 and the turbine wheel 20 are, as is conventional, fixed to the ends of the rotor shaft 2.
  • the invention also constitutes a turbomachine that is equipped with a bearing arrangement according to the invention as described above.

Abstract

The invention relates to a bearing arrangement (1) of a rotor shaft (2), in particular of a turbomachine (3; 16), having at least one rolling bearing (4, 5) which has an inner ring (6) engaging around a bearing section (7; 7') of the rotor shaft (2) and which has an outer ring (8), wherein a spring arrangement (9) which has at least one spring element (10) is arranged on the outer ring (8).

Description

BEARING ARRANGEMENT DESCRIPTION The invention relates to a bearing arrangement of a rotor shaft, in particular of a turbomachine, as per the preamble of claim 1.
EP 1 522 736 A2 has disclosed a generic bearing arrangement for a rotor shaft, which in the case of said document is the rotor shaft of an electric motor-driven turbocompressor.
In the case of high-speed turbomachines such as the stated turbocompressor or exhaust-gas turbochargers, electrically driven compressors or expander turbines, intense vibration excitations caused by an imbalance or an instability of the rotor shaft can lead to acoustic problems.
It is therefore an object of the present invention to provide a bearing arrangement of the type indicated in the preamble of claim 1 which makes it possible for the stated acoustic problems of known bearing arrangements to be at least minimized.
This object is achieved by the features of claim 1.
Tests carried out within the context of the invention have shown that the vibration excitations or vibrations discussed in the introduction can be reduced considerably through the provision of a spring arrangement. It is furthermore possible for the bearing loading to be reduced. It can furthermore advantageously be achieved that thermal expansions between the bearing seats can be compensated.
The dependent claims contain advantageous developments of the invention.
If the spring element is provided with a simple, open geometry, it is advantageously possible to realize an additional ventilation function. Furthermore, through the provision of a support ring or support strip (sheet- metal strip), it is possible to prevent excessive wear of the housing surrounding the bearing arrangement. The spring element and the support structure formed for example by the stated support ring may be of multi-part or unipartite form. Preferably, the spring element may have a corrugated structure and, in a further preferred embodiment, may have an additional smooth region; these may for example be installed in rolled-up form. It is furthermore possible for at least one axial abutment to be provided for axially fixing the rolling bearing. Said axial abutment may be arranged on the spring element or, if provided, on the support ring or on the support structure.
The axial abutment may be produced by way of a raised embossment, a retaining lug or a shoulder on the spring element or on the support ring.
Finally, it is possible for a multiplicity of preferably equally spaced axial abutments to be provided. The turbomachine may for example be an electrically driven compressor, an expander turbine or a classic exhaust-gas turbocharger. According to the invention, the embodiment of the turbomachine is however not restricted to these exemplary embodiments. In summary, it can be stated that, through the provision of a spring arrangement, decoupling of the rolling bearing from the surrounding housing is possible even without the provision of oil. Use is preferably made of a soft spring structure which has a damping action, which leads to energy dissipation through friction.
The spring arrangement or spring structure may, according to the invention, be similar to those in radial air bearings. The spring element preferably has a natural frequency that lies outside the operating frequency of the turbomachine or of the rotor shaft.
Further details, advantages and features of the present invention can be found in the following description of exemplary embodiments with reference to the drawing, in which:
Figure 1 is a sectional illustration through a first embodiment of a turbomachine in the form of an electrically driven compressor,
Figure 2 shows a plan view of a rolling bearing element that is equipped with a spring arrangement according to the invention,
Figure 3 shows a perspective view of the rolling bearing element as per Figure 2,
Figure 4 is a sectional illustration through a rolling bearing that is equipped with a spring arrangement according to the invention, Figure 5 is a sectional illustration of the installed state of a rolling bearing equipped with a spring arrangement, and
Figure 6 is a schematically highly simplified illustration of an exhaust- gas turbocharger as a further example of a turbomachine according to the invention.
Figure 1 shows a possible embodiment of the turbomachine 3 according to the invention in the form of an electrically driven compressor. The turbomachine 3 has a rotor shaft 2 on which a compressor wheel 15 is arranged. A bearing arrangement 1 that conforms to the principles of the present invention is arranged in a bearing housing 18, which bearing housing will be described in detail below on the basis of Figures 2 to 5. The electrically driven compressor 3 furthermore has an electric motor 14, which is merely schematically illustrated in Figure 1 because it does not need to be explained in detail for the explanation of the principles of the present invention. Viewing Figures 1 to 4 together, it is clear that the bearing arrangement 1 in the example has two rolling bearings 4 and 5, which are preferably of identical form. The rolling bearings 4, 5 each have an inner ring 6 which engages around a bearing section 7 or 7 of the rotor shaft 2, as can be seen in particular in Figures 1 and 4. The rolling bearing 4, 5 also has an outer ring 8 which, together with the inner ring 6, guides a multiplicity of rolling bodies, of which one rolling body is indicated representatively in Figures 4 and 5 by the reference sign 13.
As is clear in particular from viewing Figures 2 to 4 together, a spring arrangement 9 is also provided which is arranged on the outer ring 8 of the respective rolling bearing 4 or 5 and which has at least one spring element 10.
In the particularly preferred embodiment illustrated in Figure 4, said spring element 10 of the spring arrangement 9 is in the form of a corrugated spring that is open on one side. The embodiment of the spring element 10 is however not restricted to said embodiment.
Furthermore, in the embodiment as per Figures 2 to 4, and also in that as per Figure 5, there is provided, as a further element of the spring arrangement 9, a support ring or a support plate 11 which surrounds the spring element 10 and preferably bears against the outside of the latter, as can be seen from the sectional illustration of Figure 4.
In the embodiment as per Figures 2, 3 and 5, the spring arrangement 9 also has at least one axial abutment 12. In the embodiment as per Figures 2 and 3, a multiplicity of such axial abutments 12, in particular nine such abutments, is/are provided, said abutments being provided so as to be uniformly circumferentially spaced apart. The one or more axial abutments 12 may in this case be arranged either on the spring element 10 or, if provided, on the support ring 11.
In Figure 6, as a further example of a turbomachine according to the invention, an exhaust-gas turbocharger 16 is provided which, as is conventional, has a turbine 17 with a turbine wheel 20, the bearing housing 18 for the mounting of the rotor shaft 2, and a compressor 19 with a compressor wheel 21, wherein the compressor wheel 21 and the turbine wheel 20 are, as is conventional, fixed to the ends of the rotor shaft 2.
Accordingly, the invention also constitutes a turbomachine that is equipped with a bearing arrangement according to the invention as described above.
In addition to the above written description of the invention, reference is hereby explicitly made, for additional disclosure thereof, to the diagrammatic illustration of the invention in Figures 1 to 6.
LIST OF REFERENCE SYMBOLS
1 Bearing arrangement
2 Rotor shaft
3 Turbomachine
4, 5 Rolling bearing
6 Inner ring
7, 7' Bearing section
8 Outer ring
9 Spring arrangement
10 Spring element
11 Support ring
12 Axial abutment
13 Rolling body, in particular ball
14 Electric motor
15 Compressor wheel
16 Exhaust-gas turbocharger
17 Turbine
18 Bearing housing
19 Compressor
20 Turbine wheel
21 Compressor wheel

Claims

1. A bearing arrangement (1) of a rotor shaft (2), in particular of a turbomachine (3; 16),
- having at least one rolling bearing (4, 5)
- which has an inner ring (6) engaging around a bearing section (7; 7') of the rotor shaft (2) and
- which has an outer ring (8),
wherein
- a spring arrangement (9) which has at least one spring element (10) is arranged on the outer ring (8).
2. The bearing arrangement as claimed in claim 1, wherein the spring element (10) is in the form of a corrugated spring.
3. The bearing arrangement as claimed in claim 2, wherein the corrugated spring (10) is designed to be open on one side.
4. The bearing arrangement as claimed in one of claims 1 to 3, wherein the spring arrangement (9) has a support ring (11) which bears against the outside of the spring element (10).
5. The bearing arrangement as claimed in one of claims 1 to 4, wherein the spring arrangement (9) has at least one axial abutment (12).
6. The bearing arrangement as claimed in claim 5, wherein the axial abutment (12) is attached to the spring element (10).
7. The bearing arrangement as claimed in claim 4 and 5, wherein the axial abutment (12) is attached to the support ring (11).
8. The bearing arrangement as claimed in one of claims 5 to 7, wherein a multiplicity of equally spaced axial abutments (12) is provided.
9. The bearing arrangement as claimed in one of claims 1 to 8, wherein the spring element (10) has a natural frequency that lies outside the operating frequency of the rotor shaft (2) or of the turbomachine (13, 16).
10. The bearing arrangement as claimed in one of claims 1 to 9, wherein the turbomachine is in the form of an electrically driven compressor (3).
11. The bearing arrangement as claimed in one of claims 1 to 9, wherein the turbomachine is in the form of an expander turbine.
12. The bearing arrangement as claimed in one of claims 1 to 9, wherein the turbomachine is in the form of an exhaust-gas turbocharger (16).
PCT/US2014/064780 2013-11-14 2014-11-10 Bearing arrangement WO2015073361A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112014004703.1T DE112014004703T5 (en) 2013-11-14 2014-11-10 bearing arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013223237 2013-11-14
DE102013223237.3 2013-11-14

Publications (1)

Publication Number Publication Date
WO2015073361A1 true WO2015073361A1 (en) 2015-05-21

Family

ID=53057915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/064780 WO2015073361A1 (en) 2013-11-14 2014-11-10 Bearing arrangement

Country Status (2)

Country Link
DE (1) DE112014004703T5 (en)
WO (1) WO2015073361A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106545572A (en) * 2017-01-11 2017-03-29 四川金占机械制造有限责任公司 A kind of inserted tooth hob drill bit fluid bearing
CN107575470A (en) * 2017-09-01 2018-01-12 宁波创先轴承有限公司 A kind of good plastic bearing of anti-seismic performance
GB2556059A (en) * 2016-11-16 2018-05-23 Valeo Air Man Uk Limited Electric supercharger with bearing retention
JP2018080587A (en) * 2016-11-14 2018-05-24 株式会社豊田自動織機 Electric supercharger
CN111637157A (en) * 2020-05-15 2020-09-08 大连理工大学 Composite structure anti-vibration bearing based on viscoelastic damping element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021126248A1 (en) 2021-10-11 2023-04-13 Hanon Systems refrigerant compressor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966280A (en) * 1973-12-17 1976-06-29 Henrik Gerner Olrik Device for converting rotary motion to axial motion and a method of applying the device for truing, polishing or calibrating a body of rotation
JPS60201111A (en) * 1984-03-23 1985-10-11 Nippon Telegr & Teleph Corp <Ntt> Oscillative bearing mechanism
US6227715B1 (en) * 1998-12-09 2001-05-08 INA Wälzlager Schaeffler oHG Rolling bearing assembly for support of a steering shaft
WO2011158112A1 (en) * 2010-06-15 2011-12-22 Toyota Jidosha Kabushiki Kaisha Rolling bearing assembly for rotational shaft with oil passage
EP2535607A1 (en) * 2011-06-17 2012-12-19 Aktiebolaget SKF Turbocharger, notably for a combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966280A (en) * 1973-12-17 1976-06-29 Henrik Gerner Olrik Device for converting rotary motion to axial motion and a method of applying the device for truing, polishing or calibrating a body of rotation
JPS60201111A (en) * 1984-03-23 1985-10-11 Nippon Telegr & Teleph Corp <Ntt> Oscillative bearing mechanism
US6227715B1 (en) * 1998-12-09 2001-05-08 INA Wälzlager Schaeffler oHG Rolling bearing assembly for support of a steering shaft
WO2011158112A1 (en) * 2010-06-15 2011-12-22 Toyota Jidosha Kabushiki Kaisha Rolling bearing assembly for rotational shaft with oil passage
EP2535607A1 (en) * 2011-06-17 2012-12-19 Aktiebolaget SKF Turbocharger, notably for a combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018080587A (en) * 2016-11-14 2018-05-24 株式会社豊田自動織機 Electric supercharger
GB2556059A (en) * 2016-11-16 2018-05-23 Valeo Air Man Uk Limited Electric supercharger with bearing retention
CN106545572A (en) * 2017-01-11 2017-03-29 四川金占机械制造有限责任公司 A kind of inserted tooth hob drill bit fluid bearing
CN107575470A (en) * 2017-09-01 2018-01-12 宁波创先轴承有限公司 A kind of good plastic bearing of anti-seismic performance
CN107575470B (en) * 2017-09-01 2019-03-19 宁波创先轴承有限公司 A kind of good plastic bearing of anti-seismic performance
CN111637157A (en) * 2020-05-15 2020-09-08 大连理工大学 Composite structure anti-vibration bearing based on viscoelastic damping element
CN111637157B (en) * 2020-05-15 2021-11-05 大连理工大学 Composite structure anti-vibration bearing based on viscoelastic damping element

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