IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0421893
(2012-03-16)
|
등록번호 |
US-8939738
(2015-01-27)
|
발명자
/ 주소 |
- Beers, Craig M.
- Binek, Lawrence
- Lugo, Valentina
|
출원인 / 주소 |
- Hamilton Sundstrand Corporation
|
대리인 / 주소 |
Carlson, Gaskey & Olds, PC
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
12 |
초록
▼
A thrust shaft for a fan has a shaft body with an enlarged disk adjacent one axial end to provide a rotating surface in a pair of thrust bearings. A first cylindrical portion extends from the disk in a first direction, and a second cylindrical portion extending from the disk in a second opposed dire
A thrust shaft for a fan has a shaft body with an enlarged disk adjacent one axial end to provide a rotating surface in a pair of thrust bearings. A first cylindrical portion extends from the disk in a first direction, and a second cylindrical portion extending from the disk in a second opposed direction. The second cylindrical portion has a hollow bore, and there are a plurality of holes extending through the second cylindrical portion to communicate an outer periphery with the bore. A ratio of the diameter of the bore to a diameter of the plurality of air holes is between 6.60 and 7.00. A ratio of an overall length of the second cylindrical portion, and a distance from a face of the enlarged disk to a center of the holes is between 14.4 and 15.2. A thrust bearing assembly, a fan, a cabin air supply system, and a method are also disclosed.
대표청구항
▼
1. A thrust shaft for a fan comprising: a shaft body having an enlarged disk adjacent one axial end to provide a rotating surface for a pair of thrust bearings;a first cylindrical portion extending from said disk in a first direction, and a second cylindrical portion extending from said disk in a se
1. A thrust shaft for a fan comprising: a shaft body having an enlarged disk adjacent one axial end to provide a rotating surface for a pair of thrust bearings;a first cylindrical portion extending from said disk in a first direction, and a second cylindrical portion extending from said disk in a second opposed direction, said second cylindrical portion having a hollow bore, and there being a plurality of holes extending through said second cylindrical portion to communicate an outer periphery of said second cylindrical portion with said hollow bore, with a ratio of a diameter of said hollow bore of said second cylindrical portion to a diameter of said plurality of holes being between 6.60 and 7.00;a ratio of an overall length of said second cylindrical portion, and a distance from a face of said enlarged disk to a center of said holes being between 14.4 and 15.2;said enlarged disk extending for an axial thickness, and a spacing distance being defined from said face to a center of said holes, with a ratio of said thickness to said spacing distance being between 0.82 and 0.92; andsaid diameter of said hollow bore being taken at an axial location aligned with said holes. 2. The shaft as set forth in claim 1, wherein there are eleven of said holes spaced equally about a circumference of said second cylindrical portion. 3. A thrust bearing assembly comprising: a pair of thrust bearing members;a thrust shaft body positioned between said thrust bearing members and having an enlarged disk adjacent one axial end to provide a rotating surface;a first cylindrical portion extending from said enlarged disk in a first direction, and a second cylindrical portion extending from said enlarged disk in a second opposed direction, said second cylindrical portion having a hollow bore, and there being a plurality of holes extending through said second cylindrical portion to communicate an outer periphery of said second cylindrical portion with said hollow bore, with a ratio of a diameter of said hollow bore of said second cylindrical portion to a diameter of said plurality of holes being between 6.60 and 7.00;a ratio of an overall length of said second cylindrical portion, and a distance from a face of said enlarged disk to a center of said holes being between 14.4 and 15.2;said enlarged disk extending for an axial thickness, and a spacing distance being defined from said face to a center of said holes, with a ratio of said thickness to said spacing distance being between 0.82 and 0.92; andsaid diameter of said hollow bore being taken at an axial location aligned with said holes. 4. The thrust bearing assembly as set forth in claim 3, wherein there are eleven of said holes spaced equally about a circumference of said second cylindrical portion. 5. A fan for use in a cabin air supply for an aircraft comprising: a motor driving a rotor, said rotor driving a fan rotor;a housing enclosing said motor, and said fan rotor, and said housing having two opposed housing portions each providing air thrust bearing surfaces;a shaft body rotating with said rotor, and having an enlarged disk adjacent one axial end to provide a rotating surface in a thrust bearing and positioned between said two opposed housing portions;a first cylindrical portion extending from said disk in a first direction, and a second cylindrical portion extending from said enlarged disk in a second opposed direction, said second cylindrical portion having a hollow bore, and there being a plurality of holes extending through said second cylindrical portion to communicate an outer periphery of said second cylindrical portion with said hollow bore, with a ratio of a diameter of said hollow bore of said second cylindrical portion to a diameter of said plurality of holes being between 6.60 and 7.00;an overall length of said second cylindrical portion being a third distance, and a distance from a face of said enlarged disk to a center of said holes being a fourth distance, with a ratio of said third distance to said fourth distance being between 14.4 and 15.2;said enlarged disk extending for an axial thickness, and a spacing distance being defined from said face to a center of said holes, with a ratio of said thickness to said spacing distance being between 0.82 and 0.92; andsaid diameter of said hollow bore being taken at an axial location aligned with said holes. 6. The fan as set forth in claim 5, wherein there are eleven of said holes. 7. The fan as set forth in claim 6, wherein said eleven of said holes are spaced equally about a circumference of said second cylindrical portion. 8. A cabin air supply system for an aircraft comprising: at least one heat exchanger for cooling air to be delivered into an airplane cabin;a fan including a motor driving a rotor, said rotor driving a fan rotor, a housing enclosing said motor, and said fan rotor, and said housing having two opposed housing portions each providing air thrust bearing surfaces, a shaft body rotating with said rotor, and having an enlarged disk adjacent one axial end to provide a rotating surface in a thrust bearing and positioned between said two opposed housing portions, a first cylindrical portion extending from said enlarged disk in a first direction, and a second cylindrical portion extending from said enlarged disk in a second opposed direction, said second cylindrical portion having a hollow bore, and there being a plurality of holes extending through said second cylindrical portion to communicate an outer periphery of said second cylindrical portion with said hollow bore, with a ratio of a diameter of said hollow bore of said second cylindrical portion to a diameter of said plurality of holes being between 6.60 and 7.00, and an overall length of said second cylindrical portion being a third distance, and a distance from a face of said enlarged disk to a center of said holes being a fourth distance, with a ratio of said third distance to said fourth distance being between 14.4 and 15.2;said enlarged disk extending for an axial thickness, and a spacing distance being defined from said face to a center of said air holes, with a ratio of said thickness to said spacing distance being between 0.82 and 0.92; andsaid diameter of said hollow bore being taken at an axial location aligned with said holes. 9. The system as set forth in claim 8, wherein there are eleven of said holes. 10. The system as set forth in claim 9, wherein said eleven of said holes are spaced equally about a circumference of said second cylindrical portion. 11. A method of assembling a fan comprising the steps of: inserting a thrust shaft body having an enlarged disk adjacent one axial end, a first cylindrical portion extending from said disk in a first direction, and a second cylindrical portion extending from said disk in a second opposed direction, said second cylindrical portion having a hollow bore, and there being a plurality of holes extending through said second cylindrical portion to communicate an outer periphery of said second cylindrical portion with said hollow bore, with a ratio of a diameter of said hollow bore of said second cylindrical portion to a diameter of said plurality of holes being between 6.60 and 7.70, a ratio of an overall length of said second cylindrical portion, and a distance from a face of said enlarged disk to a center of said holes being between 14.4 and 15.2, said enlarged disk extending for an axial thickness, and a spacing distance being defined from said face to a center of said holes, with a ratio of said thickness to said spacing distance being between 0.82 and 0.92 said diameter of said hollow bore being taken at an axial location aligned with some plurality of holes; andsecuring said thrust shaft body to rotate with a motor rotor, and positioning said enlarged disk to be intermediate two housing portions, with said two housing portions each defining thrust bearing surfaces in combination with said enlarged disk. 12. The method of assembling a fan as set forth in claim 11, wherein there are eleven of said holes spaced equally about a circumference of said second cylindrical portion.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.