Vacuum pump with fiber-reinforced resin cylinder
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04D-029/52
F04D-019/04
F04D-029/02
출원번호
US-0358248
(2012-11-28)
등록번호
US-9835170
(2017-12-05)
우선권정보
JP-2011-261793 (2011-11-30)
국제출원번호
PCT/JP2012/080775
(2012-11-28)
국제공개번호
WO2013/081019
(2013-06-06)
발명자
/ 주소
Kabasawa, Takashi
Kawai, Yuichi
Hori, Masaki
Iiyoshi, Takahiro
출원인 / 주소
EDWARDS JAPAN LIMITED
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
Provided is a vacuum pump in which the flexing of a rotating cylinder made of a fiber-reinforced resin can be reduced as much as possible to sufficiently reduce the gap between the rotating cylinder and a fixed cylinder, and exhaust performance can thereby be improved to great effect. A vacuum pump
Provided is a vacuum pump in which the flexing of a rotating cylinder made of a fiber-reinforced resin can be reduced as much as possible to sufficiently reduce the gap between the rotating cylinder and a fixed cylinder, and exhaust performance can thereby be improved to great effect. A vacuum pump comprising a thread groove pump portion equipped with a fixed cylinder portion (2) having a spiraling thread groove portion (1) provided in an internal peripheral surface, and a rotating cylinder portion (3) placed inside the fixed cylinder portion (2), the thread groove pump portion exhausting through a spiraling exhaust flow channel due to the rotating cylinder portion (3) being caused to rotate, and the exhaust flow channel being formed from the thread groove portion (1) and an external peripheral surface of the rotating cylinder portion (3). The rotating cylinder portion (3) is configured by stacking a plurality of fiber-reinforced resin layers, and the outermost fiber-reinforced resin layer is thicker than the adjacent layer.
대표청구항▼
1. A vacuum pump comprising: a thread groove pump portion having a fixed cylinder portion with a spiraling thread groove portion provided in an internal peripheral surface, and a rotating cylinder portion disposed inside the fixed cylinder portion,the thread groove pump portion exhausting through a
1. A vacuum pump comprising: a thread groove pump portion having a fixed cylinder portion with a spiraling thread groove portion provided in an internal peripheral surface, and a rotating cylinder portion disposed inside the fixed cylinder portion,the thread groove pump portion exhausting through a spiraling exhaust flow channel due to the rotating cylinder portion being caused to rotate,the spiraling exhaust flow channel being formed from the thread groove portion and an external peripheral surface of the rotating cylinder portion,wherein the rotating cylinder portion comprises at least two fiber-reinforced resin hoop layers and a fiber-reinforced resin helical layer interposed between the at least two fiber-reinforced resin hoop layers,wherein an outermost one of the at least two fiber-reinforced resin hoop layers is configured to be thicker than an adjacent fiber-reinforced resin helical layer,wherein the rotating cylinder portion includes a removal machining portion on at least part of the external peripheral surface of the rotating cylinder portion. 2. The vacuum pump according to claim 1, characterized in that the outermost fiber-reinforced resin hoop layer is configured to be at least 25% thicker than an adjacent layer. 3. The vacuum pump according to claim 1, wherein irregularities on at least part of the surface of the rotating cylinder portion are less than 0.25 mm. 4. The vacuum pump according to claim 1, wherein the at least two fiber-reinforced resin hoop layers are equal to each other in thickness. 5. The vacuum pump according to claim 1, wherein the rotating cylinder portion further comprises an additional fiber-reinforced resin hoop layer and an additional fiber-reinforced resin helical layer, and layers other than the outermost fiber-reinforced resin hoop layer and an innermost fiber-reinforced resin hoop layer are set to be equal to each other in thickness. 6. A vacuum pump comprising: a thread groove pump portion having a fixed cylinder portion with a spiraling thread groove portion provided in an internal peripheral surface, and a rotating cylinder portion disposed inside the fixed cylinder portion,the thread groove pump portion exhausting through a spiraling exhaust flow channel due to the rotating cylinder portion being caused to rotate,the spiraling exhaust flow channel being formed from the thread groove portion and an external peripheral surface of the rotating cylinder portion,wherein the rotating cylinder portion comprises a plurality of fiber-reinforced resin layers, and the fiber-reinforced resin layers include helical layers comprising a helical winding of fibers and hoop layers comprising a hoop winding of fibers, andan outermost hoop layer is configured to be thicker than an adjacent layer,wherein the rotating cylinder portion includes a removal machining portion on at least part of the external peripheral surface of the rotating cylinder portion. 7. The vacuum pump according to claim 6, wherein the outermost hoop layer is configured to be at least 25% thicker than the adjacent layer. 8. The vacuum pump according to claim 6, wherein irregularities on at least part of the surface of the rotating cylinder portion are less than 0.25 mm. 9. The vacuum pump according to claim 6, wherein the outermost layer of the rotating cylinder portion is a hoop layer. 10. The vacuum pump according to claim 6, wherein an innermost layer of the rotating cylinder portion is a hoop layer. 11. The vacuum pump according to claim 10, wherein the hoop layers of the outermost layer and innermost layer of the rotating cylinder portion are equal to each other in thickness. 12. The vacuum pump according to claim 6, wherein layers of the rotating cylinder portion other than the outermost layer and innermost layer are set to be equal to each other in thickness. 13. A vacuum pump comprising: a thread groove pump portion equipped with a fixed cylinder portion having a spiraling thread groove portion provided in an internal peripheral surface;a rotating cylinder portion placed inside the fixed cylinder portion, the thread groove pump portion exhausting through a spiraling exhaust flow channel due to the rotating cylinder portion being caused to rotate;wherein the spiraling exhaust flow channel is formed from the thread groove portion and an external peripheral surface of the rotating cylinder portion;wherein the rotating cylinder portion comprises a first fiber-reinforced resin layer and a second fiber-reinforced resin layer;wherein the first fiber-reinforced resin layer provides more resistance to force in a circumferential direction than the second fiber-reinforced resin layer, and the second fiber-reinforced resin layer provides more resistance to force in an axial direction than the first fiber-reinforced resin layer,wherein the rotating cylinder portion includes a removal machining portion on at least part of the external peripheral surface of the rotating cylinder portion. 14. The vacuum pump according to claim 13, wherein the first fiber-reinforced resin layer is thicker than the second fiber-reinforced resin layer. 15. The vacuum pump according to claim 13, further comprising at least one additional first fiber-reinforced resin layer and at least one additional second fiber-reinforced resin layer.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (14)
Ching Fred Y. (Canyon Country CA), Composite cylinder for use in aircraft hydraulic actuator.
Jakobsen Karl Severin (Somers CT) McLaughlin David Benjamin (South Windsor CT), Method of making filament reinforced composite rings from plural flat filamentary spiral layers.
Walls W. Alan (Austin TX) Estes Elvin (Austin TX) Manifold Steve M. (Austin TX) Spann Michael L. (Austin TX) Gully John H. (Austin TX), Reinforced composite flywheels and shafts.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.