EP0530133A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Oil channeling in a centrifugal compressor transmission
Assignee: Carrier Corp
•
Filing: 1992-08-13
•
Granted: —
•
Expires: 2012-08-13
Abstract
Abstract In the transmission of a centrifugal compressor, where a gear (31, 34) is located adjacent to a lubricated bearing (27, 38, 39), a barrier (61, 62, 63) is provided between the bearing (27, 38, 39) and the gear (31, 34) to restrain the flow of oil to the gear and thereby reduce the pumping and windage losses that would otherwise occur. An oil port (70, 78, 84) is made to communicate with the internal area of the barrier (61, 62, 63) to thereby provide drainage of the accumulated oil to a sump (44).
Inventors
- 👤 Vishnu M. Sishtla
- 👤 Thomas M. Zinsmeyer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 14:57
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/06; F04D29/063; F04D25/00; F04D25/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A method of reducing mechanical losses in a centrifugal compressor of the type having a bearing supported shaft connected to a drive gear, with the bearing being lubricated, characterized by the steps of: providing a barrier around one end of the bearing to prevent oil from being slung out onto the gear; and providing an oil drainage port in fluid communication with an internal portion of said barrier for draining off oil that accumulates within said barrier.
Claim 2
Dependent Claim
22 words
A method as set forth in Claim 1 wherein said oil drainage port drains the oil to a sump within the compressor.
Claim 3
Dependent Claim
26 words
A method as set forth in Claim 1 wherein said shaft is a low speed drive shaft and said gear is a low speed drive gear.
Claim 4
Dependent Claim
26 words
A method as set forth in Claim 1 wherein said shaft is a high speed driven shaft and said gear is a high speed driven gear.
Claim 5
Dependent Claim
15 words
A method as set forth in Claim 4 wherein said bearing is a thrust bearing.
Claim 6
Dependent Claim
15 words
A method as set forth in Claim 4 wherein said bearing is a journal bearing.
Claim 7
Dependent Claim
21 words
A method as set forth in Claim 1 wherein said barrier comprises an annulus disposed between the bearing and the gear.
Claim 8
Dependent Claim
96 words
In a centrifugal compressor of the type having a shaft supporting bearing adjacent to a gear drivingly connected to the shaft, containment means for restraining the flow of oil from the bearing to the gear, characterized by: an annular ring having a L-shaped cross section comprised of an axial leg and a radial leg; and mounting means for locating said annular ring adjacent the bearing, such that the said legs are in overlapping relationship with respective axial and radial portions of the bearing to thereby restrain the flow of oil from the bearing to the gear.
Claim 9
Dependent Claim
24 words
A centrifugal compressor as set forth in Claim 8 and including an oil port for draining off oil that accumulates within said annular ring.
Claim 10
Dependent Claim
21 words
A centrifugal compressor as set forth in Claim 9 wherein said port drains the oil to a sump within the compressor.
Claim 11
Dependent Claim
41 words
A centrifugal compressor as set forth in Claim 8 and including a seal ring that is held in place by said annular ring, said seal ring surrounding and engaging the outer circumference of the shaft to provide a sealing relationship therewith.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.