IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0687042
(2010-01-13)
|
등록번호 |
US-8371799
(2013-02-12)
|
발명자
/ 주소 |
- Spathias, Adonis Kosta
- Hurley, Keith Alan
- Olson, Hokuto
|
출원인 / 주소 |
- Honeywell International Inc.
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
10 |
초록
▼
An apparatus and method for maintaining separation of two journal foil bearing assemblies, where each journal foil bearing assembly comprises one or more foils with lugs formed thereon for insertion into axial grooves of a bore, the means comprising a pin for insertion into each groove so that an ed
An apparatus and method for maintaining separation of two journal foil bearing assemblies, where each journal foil bearing assembly comprises one or more foils with lugs formed thereon for insertion into axial grooves of a bore, the means comprising a pin for insertion into each groove so that an edge of the lug that is inserted into the groove abuts the pin and is prevented from axially drifting along the bore. The pin provides a broad area along the lug edge so that the lug edge does not cut into the pin.
대표청구항
▼
1. A bearing system supporting a shaft for rotational movement, the bearing system comprising: a first foil bearing assembly for insertion between the shaft and an inner wall of a bore, the first foil bearing assembly comprising one or more foils, each foil curved in an arc around the shaft, each fo
1. A bearing system supporting a shaft for rotational movement, the bearing system comprising: a first foil bearing assembly for insertion between the shaft and an inner wall of a bore, the first foil bearing assembly comprising one or more foils, each foil curved in an arc around the shaft, each foil having a lug adapted for insertion into an axial groove in the inner wall, the axial groove parallel with a centerline of the bore, wherein the lug constrains the foil from rotational movement about the shaft;a retaining ring for insertion into a retaining ring groove in the inner wall at an end of the bore; anda pin for insertion into the axial groove, the pin having a first end and a second end, the first end abutting an edge of the lug in the groove, and the second end abutting the retaining ring. 2. The bearing system described in claim 1, further comprising a second foil bearing assembly for insertion between the shaft and the inner wall, the lugs of the foils in the second foil bearing assembly inserted into the axial groove and abutting a second end of each pin. 3. The bearing system described in claim 1, wherein the first foil bearing assembly comprises three foils and the bearing system comprises three pins. 4. The bearing system described in claim 1, wherein the pin comprises a plurality of portions that are restrained by the axial groove from migrating into the bore and thereby maintained in alignment. 5. The bearing system described in claim 4, wherein the each portion of the plurality of portions of the pin is fabricated from a material selected from a plurality of different materials. 6. A turbo compressor comprising: a housing;a bore through the housing, the bore having an axial groove extending along an inner wall of the bore, the axial groove parallel with a centerline of the bore;a shaft received by the bore;a first foil bearing assembly positioned between the shaft and the inner wall, the first foil bearing comprising a foil curved in an arc around the shaft and a lug adapted for insertion into the axial groove, the lug having a lug end, wherein the lug constrains the foil from rotational movement about the shaft;a retaining ring for insertion into a retaining ring groove in the inner wall at an end of the bore; anda pin positioned in the axial groove, the pin having a first pin end and a second pin end, the first pin end abutting the lug end to constrain the foil from axial movement along the bore, and the second pin end abutting the retaining ring. 7. The turbo compressor described in claim 6, further comprising: a second foil bearing assembly having a second lug with a second lug end, the second lug inserted into the axial groove so that the second lug end abuts the second pin end. 8. The turbo compressor described in claim 6, wherein: the turbo compressor comprises a second foil bearing assembly;the first and second foil bearing assemblies are each comprised of an identical number of foils;a number of axial grooves is identical to the number of foils, anda number of pins is identical to the number of foils in the first foil bearing assembly. 9. A method for restraining journal foil bearing assemblies from migration along a bore, the method comprising the steps of: positioning the lug of a foil of a first journal foil bearing assembly in an axial groove in an inner wall of the bore and parallel with a centerline of the bore, wherein the lug prevents the foil from moving radially about the bore with a shaft inserted therethrough;preventing the foil from migrating axially along the bore by positioning a pin with a first end and a second end between the foil and an object, the first end abutting the lug of the foil and the second end abutting an object;adjusting a length of the pin to position the first journal foil bearing assembly about a journal of a shaft inserted through both the bore and the first journal foil bearing assembly; andsupporting the shaft along the journal for rotational movement with the first journal foil bearing assembly. 10. The method for restraining journal foil bearing assemblies described in claim 9, wherein the pin is within the axial groove so that it does not protrude into the bore. 11. The method for restraining journal foil bearing assemblies described in claim 9, wherein the second end of the pin abuts an object selected from the group consisting of a lug from a second journal foil bearing assembly and a retaining ring inserted into a ring retainer groove radially fabricated at an end of the bore. 12. The method for restraining journal foil bearing assemblies described in claim 9, wherein the lug of a foil of a second journal foil bearing assembly is positioned in the axial groove. 13. The method for restraining journal foil bearing assemblies described in claim 12, wherein the lugs of each journal foil bearing assembly are inserted into a common axial groove. 14. The method for restraining journal foil bearing assemblies described in claim 13, further comprising the step of maintaining a fixed distance between adjacent journal foil bearing assemblies by using a set of pins containing a number of pins equal to the number of foils in each journal foil bearing assembly.
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