IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0938529
(2004-09-13)
|
등록번호 |
US-7517187
(2009-07-01)
|
우선권정보 |
TW-92135739 A(2003-12-16) |
발명자
/ 주소 |
- Hsu, Li Chieh
- Hsueh, Chien Ching
- Wu, Jia Ruey
- Jan, Hung Ying
|
출원인 / 주소 |
- Industrial Technology Research Institute
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
2 |
초록
▼
The invention provides a high-speed rotor assembly for an overhung centrifugal compressor comprising a housing, a rotor component, an oil film damper and an impeller, which is adapted for connecting to a power output mechanism, wherein the rotor component is arranged inside the housing, and the oil
The invention provides a high-speed rotor assembly for an overhung centrifugal compressor comprising a housing, a rotor component, an oil film damper and an impeller, which is adapted for connecting to a power output mechanism, wherein the rotor component is arranged inside the housing, and the oil film damper is disposed between the impeller and the rotor component, and the impeller is coupled to the rotor component. The rotor component further comprises a sleeve, a first bearing, a second bearing, a transmission shaft, a plurality of resilient elements and a spacer, wherein an end of the sleeve is connected to one of the circular rib by a screw while another end thereof is handing freely, and a oil film damper is disposed between the sleeve and another circular rib. Moreover, the first bearing and the second bearing are respectively arranged at the two side of the sleeve, and the spacer is arranged between the two bearings with the two end thereof respectively abutted against the inner races of the two bearings. Further, the transmission shaft is disposed passing through the spacer and the two bearings, and the impeller is disposed at the second side of the housing and is coupled to an end of the transmission shaft.
대표청구항
▼
What is claimed is: 1. A high-speed rotor assembly for an overhung centrifugal compressor, coupled to a power output mechanism, comprising: a housing, consisting of a first side, a second side, and having a plurality of circular ribs arranged therein, wherein the power output mechanism is disposed
What is claimed is: 1. A high-speed rotor assembly for an overhung centrifugal compressor, coupled to a power output mechanism, comprising: a housing, consisting of a first side, a second side, and having a plurality of circular ribs arranged therein, wherein the power output mechanism is disposed at the first side; a rotor component, arranged inside the housing, and further comprising: a sleeve, a first bearing, a second bearing, a transmission shaft, a plurality of resilient elements and a spacer, wherein an end of the sleeve is connected to one of the plurality circular ribs while another end thereof is hanging freely, and the first bearing and the second bearing are arranged inside the sleeve with the spacer disposed in-between abutting against the inner races of both the first bearing and the second bearing, and the plurality of resilient elements are arranged inside a plurality of bearing studs of the sleeve's inner races for exerting a specified preload on the outer races of the first and the second bearings, and, the transmission shaft is disposed passing through the spacer and the two bearings; an oil film damper, arranged at a position between an end of a sleeve of the rotor component and one of the circular rib; and an impeller, being disposed at the second side of the housing to be coupled to an end of a transmission shaft of the rotor component. 2. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, the rotor component further comprising a plurality of pins, arranged inside the corresponding resilient elements, wherein each pin is shorter than the corresponding resilient element. 3. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, the rotor component further comprising: a first slinger, a second slinger and a third slinger, each being mounted on the transmission shaft, wherein the first oil slinger is disposed at a position proximate to the power output mechanism by having an end thereof disposed adjacent to a circular protrusion of the transmission shaft and another end thereof abutted against the inner race of the first bearing, and the second and third oil slingers are disposed adjacent to each other at a position proximate to the impeller, and the second oil slinger is disposed adjacent to the second bearing, and the third oil slinger is disposed adjacent to the impeller. 4. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, wherein the plurality of circular ribs includes: a first circular rib, a second circular rib, a third circular rib, and a fourth circular rib in succession, and the first circular rib is fixed to an end of the sleeve by a screw. 5. The high-speed rotor assembly for an overhung centrifugal compressor of claim 4, wherein the oil film damper is disposed between an end of the sleeve and the second circular rib, and is substantially an oil film formed by pressurizing lubrication oil to be constrained with a plurality of o-rings. 6. The high-speed rotor assembly for an overhung centrifugal compressor of claim 4, further comprising: a first oil seal and a second oil seal, wherein the first oil seal is disposed on the outer race of the second oil slinger and is coupled to the third circular rib, and the second oil seal is disposed on the outer race of the third oil slinger and is coupled to the fourth circular rib. 7. The high-speed rotor assembly for an overhung centrifugal compressor of claim 6, further comprising: a first slinging trough, a second slinging trough, a plurality of channels, and an oil sump, wherein the first slinging trough is substantially the circular space enclosed by the housing, the first oil seal, the second oil slinger, the second bearing and the sleeve, and the second slinging trough is substantially the circular space enclosed by the housing, the second oil seal, the third oil slinger, and the first oil seal, and the oil sump is substantially the circular space enclosed by the housing and the sleeve, and the plurality of channels are circular distributed connecting the plurality of slinging troughs and the oil sump. 8. The high-speed rotor assembly for an overhung centrifugal compressor of claim 7, wherein the channels are circularly disposed with 100°-140° angularly apart. 9. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, wherein a polygon concave is formed at the center of the transmission shaft proximate to the impeller for coupling to the impeller. 10. The high-speed rotor assembly for an overhung centrifugal compressor of claim 9, wherein a polygon protrusion is formed at the center of a back panel of the impeller, and the position of the polygon concave corresponds to that of the polygon protrusion for enabling the polygon concave to be able to receive the polygon protrusion and thereafter to be coerced by a screw bolt. 11. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, wherein both the first bearing and the second bearing are ball bearings. 12. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, wherein the sleeve is hollowed with a plurality of fingers opened thereon. 13. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, wherein the plurality of bearing studs are disposed adjacent to the first bearing and the second bearing, each having a plurality of holes for receiving the resilient elements. 14. The high-speed rotor assembly for an overhung centrifugal compressor of claim 1, wherein a plurality of holes are arranged at the housing enabling a plurality of tubes to penetrate the housing and pass through the sleeve to the neighborhood of the first bearing and the second bearing for providing lubricating oil to the same. 15. A high-speed rotor assembly for an overhung centrifugal compressor, coupled to a power output mechanism, comprising: a housing, consisting of a first side, a second side, and having a plurality of circular ribs arranged therein, wherein the power output mechanism is disposed at the first side; a rotor component, arranged inside the housing; an oil film damper, arranged at a position between an end of a sleeve of the rotor component and one of the circular rib; an impeller, being disposed at the second side of the housing to be coupled to an end of a transmission shaft of the rotor component; and a circular air seal, being disposed on a circular protrusion at the surface of a back panel of the impeller to be coupled to the second side of the housing; wherein a plurality of air ducts are arranged on the housing at the position between the air seal and the transmission shaft, for discharging the compressed air of the back panel of the impeller therethrough while the air seal is ineffective. 16. A high-speed rotor assembly for an overhung centrifugal compressor, coupled to a power output mechanism, comprising: a housing, consisting of a first side, a second side, and having a plurality of circular ribs arranged therein, wherein the power output mechanism is disposed at the first side; a rotor component, arranged inside the housing; an oil film damper, arranged at a position between an end of a sleeve of the rotor component and one of the circular rib; and an impeller, being disposed at the second side of the housing to be coupled to an end of a transmission shaft of the rotor component; wherein an outer race of the transmission shaft proximate to the power output mechanism is keyed for coupling to a coupler. 17. A high-speed rotor assembly for an overhung centrifugal compressor, coupled to a power output mechanism, comprising: a housing, consisting of a first side, a second side, and having a plurality of circular ribs arranged therein, wherein the power output mechanism is disposed at the first side; a rotor component, arranged inside the housing; an oil film damper, arranged at a position between an end of a sleeve of the rotor component and one of the circular rib; and an impeller, being disposed at the second side of the housing to be coupled to an end of a transmission shaft of the rotor component; wherein a resilient element is a coil spring.
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