IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0974130
(2010-12-21)
|
등록번호 |
US-8757960
(2014-06-24)
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발명자
/ 주소 |
- Lugo, Valentina
- Beers, Craig M.
- Richardson, Victoria S.
|
출원인 / 주소 |
- Hamilton Sundstrand Corporation
|
대리인 / 주소 |
Carlson, Gaskey & Olds, P.C.
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
11 |
초록
▼
An example shaft support includes a cylindrical body establishing a bore extending along an axis. The bore is configured to receive a shaft. Openings are provided in the cylindrical body and distributed circumferentially about the axis. The openings are positioned radially outward of the bore. Each
An example shaft support includes a cylindrical body establishing a bore extending along an axis. The bore is configured to receive a shaft. Openings are provided in the cylindrical body and distributed circumferentially about the axis. The openings are positioned radially outward of the bore. Each of the openings has a cross-sectional area. The ratio of a total cross sectional area of the openings to a diameter of the cylindrical body is between 0.0963 and 0.0964.
대표청구항
▼
1. A shaft support comprising: a cylindrical body establishing a bore extending along an axis, the bore configured to receive a shaft; anda plurality of openings in the cylindrical body distributed circumferentially about the axis and positioned radially outward of the bore, each of the plurality of
1. A shaft support comprising: a cylindrical body establishing a bore extending along an axis, the bore configured to receive a shaft; anda plurality of openings in the cylindrical body distributed circumferentially about the axis and positioned radially outward of the bore, each of the plurality of openings having a cross sectional area, wherein a ratio of a total cross sectional area of the plurality of openings to a diameter of the cylindrical body is between 0.0963 and 0.0964. 2. The shaft support of claim 1, wherein each of the plurality of openings are defined by ends having a first included angle relative to the axis, wherein each opening has an inner edge at a first distance from the axis and an outer edge at a second distance from the axis, the ratio of the first distance to the second distance is 0.7115. 3. The shaft support of claim 2, including a plurality of ribs in the cylindrical body, the ribs defined between adjacent ends of adjacent openings, the ribs having a second included angle relative to the axis, wherein a ratio of the first included angle to the second included angle is 0.622. 4. The shaft support of claim 1, wherein the total cross sectional area is equal to the sum of each cross sectional area of each of the plurality of openings. 5. The shaft support of claim 2, wherein the first included angle is in the range of 34.4° to 39.6°. 6. The shaft support of claim 1, wherein six, equal sized openings are defined in the cylindrical body. 7. The shaft support of claim 1, wherein each opening is equally spaced circumferentially about the axis. 8. The shaft support of claim 1, wherein the cylindrical body has a diameter and a thickness, and the ratio of the diameter to the thickness is between 2.89 and 3.04. 9. The shaft support of claim 1, wherein each opening has a consistent cross section throughout. 10. The shaft support of claim 1, wherein the cylindrical body includes a radially inner side, a radially outer side, and a pair of faces on opposing axial sides of the cylindrical body, wherein the inner side and the outer side are perpendicular to the faces, wherein a plurality of chamfered edges extend between the inner side and the pair of faces and the outer side and the pair of faces. 11. The shaft support of claim 10, wherein a thickness of the cylindrical body and the length of each chamfered edge have a ratio of 3.77. 12. An air cycle machine comprising: a turbine section;a compressor section;a fan section;a shaft extending along an axis; anda shaft support radially outward of the shaft relative to the axis, the shaft support having a cylindrical body with a bore configured to receive the shaft and a plurality of openings distributed circumferentially about the axis and positioned radially outward of the bore to allow air flow from the turbine section and the compressor section to move to the fan section, each of the plurality of openings having a cross sectional area, wherein a ratio of a total cross sectional area of the plurality of openings to a diameter of the cylindrical body is between 0.0963 and 0.0964. 13. The air cycle machine of claim 12, wherein the shaft support further includes a plurality of ribs, wherein the plurality of openings have ends having a first included angle relative to the axis and the ribs defined by adjacent ends of adjacent openings having a second included angle relative to the opening, wherein the ratio of the first included angle to the second included angle is 0.622. 14. The air cycle machine of claim 12, wherein each opening having an inner edge at a first distance from the axis and an outer edge at a second distance from the axis, and the ratio of the first distance to the second distance is 0.7115. 15. The air cycle machine of claim 12, wherein the shaft support rotates about the axis with the shaft. 16. The air cycle machine of claim 12, wherein the ratio of the diameter of the cylindrical body and a diameter of the bore is between 2.313 and 2.318. 17. The air cycle machine of claim 12, including at least one second shaft support. 18. A method of installing a shaft support in an air cycle machine comprising the steps of: providing a shaft support comprising a cylindrical body, a bore in the cylindrical body configured to receive a shaft of the air cycle machine, a plurality of openings radially outward of the bore wherein each of the plurality of openings has a cross sectional area, and the ratio of a total cross sectional area of the plurality of openings to a first diameter of the bore is between 0.2226 and 0.2235;inserting the shaft support into a cavity within the air cycle machine; andpassing the shaft through the bore in the cylindrical body within the cavity such that the shaft support is radially outward of the shaft. 19. The method of claim 18, further including the step of chamfering edges between axial faces of the shaft support and an inner side and the outer side of the shaft support. 20. The shaft support of claim 1, wherein the cylindrical body comprises a polymide material. 21. The shaft support of claim 20, wherein the shaft comprises a titanium alloy. 22. The air cycle machine of claim 12, wherein the air flow includes air flow from a journal bearing, air flow from the compressor rotor, and air flow from the turbine rotor. 23. The air cycle machine of claim 12, wherein the shaft support is positioned axially in response to a frequency of the shaft to provide a desired amount of vibration. 24. The method of claim 18, wherein the plurality of openings are arranged to allow air flow from the turbine section and compressor section to move to the fan section.
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