IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0528191
(2008-05-29)
|
등록번호 |
US-8444379
(2013-05-21)
|
우선권정보 |
JP-2007-150678 (2007-06-06) |
국제출원번호 |
PCT/JP2008/059911
(2008-05-29)
|
§371/§102 date |
20090821
(20090821)
|
국제공개번호 |
WO2008/149773
(2008-12-11)
|
발명자
/ 주소 |
- Nakaniwa, Akihiro
- Futagami, Yuji
|
출원인 / 주소 |
- Mitsubishi Heavy Industries, Ltd.
|
대리인 / 주소 |
Wenderoth, Lind & Ponack, L.L.P.
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
9 |
초록
▼
A sealing device includes a housing rotatably accommodating a rotary shaft, guide parts extending along a radial direction and an axial direction of the rotary shaft, and arranged side-by-side in a circumferential direction of the rotary shaft, a partition part that is a partition between spaces bet
A sealing device includes a housing rotatably accommodating a rotary shaft, guide parts extending along a radial direction and an axial direction of the rotary shaft, and arranged side-by-side in a circumferential direction of the rotary shaft, a partition part that is a partition between spaces between the guide parts and an outside space, a first seal part that is an annular protrusion, forming a first gap with respect to the rotary shaft or the partition part, and blocking a flow of fluid passing through the outside space, and a second seal part that is an annular protrusion extending in the radial direction, forming a second gap with respect to the rotary shaft or the housing, and blocking a flow of fluid that has passed through the spaces between guide parts and a flow of fluid that has passed through the first seal part.
대표청구항
▼
1. A sealing device for a rotary fluid machine, comprising: a housing having an inner surface, and being configured to rotatably accommodate a rotary shaft;a plurality of guide parts mounted on said inner surface of said housing, said plurality of guide parts extending along at least one of a radial
1. A sealing device for a rotary fluid machine, comprising: a housing having an inner surface, and being configured to rotatably accommodate a rotary shaft;a plurality of guide parts mounted on said inner surface of said housing, said plurality of guide parts extending along at least one of a radial direction and an axial direction of the rotary shaft, and being arranged side-by-side in a circumferential direction of the rotary shaft, said plurality of guide parts having first ends and second ends, said second ends being opposite said first ends;a partition part connecting said first ends of said plurality of guide parts, said second ends of said plurality of guide parts being mounted on said housing, and said partition plate being a partition between spaces between said plurality of guide parts and an outside space;a first seal part that is an annular protrusion, and being configured to form a first gap with respect to the rotary shaft or said partition part, and being configured to block a flow of fluid passing through the outside space; anda second seal part that is an annular protrusion extending in the radial direction, and being configured to form a second gap with respect to the rotary shaft or said housing, and being configured to block a flow of fluid that has passed through the spaces between said plurality of guide parts and a flow of fluid that has passed through said first seal part,wherein said sealing device is configured to permit the fluid to pass inward in the radial direction through the spaces between said plurality of guide parts. 2. A sealing device for a rotary fluid machine, according to claim 1, wherein: said first ends of said plurality of guide parts are configured and arranged so as to face an impeller extending from the rotary shaft outward in the radial direction; andsaid partition part extends in the radial direction and is formed in a ring-plate shape to connect said first ends. 3. A sealing device for a rotary fluid machine, according to claim 2, wherein: said first seal part extends in the radial direction; andsaid first seal part or said second seal part is configured and arranged so as to face a step part radially extending the outer circumferential surface of the rotary shaft. 4. A sealing device for a rotary fluid machine, according to claim 1, wherein: said first ends of said plurality of guide parts are configured and arranged to face an outer circumferential surface of the rotary shaft; andsaid partition part extends in the axial direction, is formed in a cylindrical shape to connect said first ends, and is configured to permit the fluid to pass along the axial direction through the spaces between said plurality of guide parts. 5. A sealing device for a rotary fluid machine, according to claim 4, wherein: said first seal part extends in the radial direction; andsaid first seal part or said second seal part is configured and arranged to face a step part radially extending the outer circumferential surface of the rotary shaft. 6. A sealing device for a rotary fluid machine, according to claim 1, wherein said plurality of guide parts are plate members extending along the radial direction or the axial direction. 7. A sealing device for a rotary fluid machine, according to claim 1, wherein said plurality of guide parts are blade members extending along the radial direction or the axial direction and are curved against a rotation direction of the rotary shaft. 8. A rotary fluid machine comprising a sealing device according to one claim 1.
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