US4522562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine rotor cooling
Assignee: Safran Aircraft Engines SAS
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Filing: 1979-11-21
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Granted: 1985-06-11
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Expires: 1999-11-21
Abstract
Abstract The present invention concerns the cooling of turbine rotors, especially those of aircraft turboreactors, and discloses a turbine disc equipped with two sets of channels bored respectively close to each of the sides of the disc and in conformity with its profile, in which flows the cooling air of the turbine blades in order to superficially cool the disc.
Inventors
- 👤 Pierre A. Glowacki
- 👤 Gerard M. F. Mandet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:00
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/10; F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/085; F01D5/087; F01D5/12; F01D5/14; F01D5/18; F01D5/187; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
A turbine disc having means therein for circulating a cooling fluid for the blades supported by the disc, said cooling fluid circulating means comprising channels non-radially bored therein respectively close to each of the sides of the disc and conforming with their profile, the sides of the disc and the channels having a curved profile, advantageously in the shape of an arc of a circle, and the channels leading to the middle of the length of the cups which support the stem of the blades.
Claim 2
Dependent Claim
85 words
A turbine disc having means therein for circulating a cooling fluid for the blades supported by the disc, said cooling fluid circulating means comprising channels non-radially bored therein respectively close to each of the sides of the disc and conforming with their profile, the sides of the disc and the channels having a curved profile, advantageously in the shape of an arc of a circle, and the channels leading to the middle of the length of the cups which support the stem of the blades.
Claim 3
Dependent Claim
47 words
A turbine disc according to claim 1 wherein the cups which support the stem of the blades are fed by a cooling fluid, alternately one through a channel parallel with the upward side of the disc, and the other through a channel parallel with the downward side.
Claim 4
Dependent Claim
60 words
A turbine disc according to claim 2, wherein the channels parallel with the upward side lead out onto the upward part of the disc and those which are parallel with the downward side lead out onto the downward part, in order to collect in the vicinity of a turbine shaft supporting said turbine disc air which constitutes the cooling fluid.
Claim 5
Dependent Claim
56 words
A turbine disc according to claim 3, further comprising means for creating, on the cooling circuit of the blades fed from the upward side of the disc, a loss of pressure which compensates for the loss of pressure of the flow cooling air when it crosses the bore of the disc to reach its downward side.
Claim 6
Dependent Claim
28 words
A turbine disc according to claim 1 wherein the channels possess an oval-like section, of which the major axis is positioned parallel with the sides of the disc.
Claim 7
Dependent Claim
16 words
A turbine disc according to claim 1 wherein the channels are electrolytically bored in said disc.
Claim 8
Dependent Claim
44 words
A turbine disc according to claim 6, wherein the electrolytic boring is performed with electrodes, of which the oval-like section offers, at the extremities of its major axis, a radius of curvature which is greater than the corresponding radius of curvature of an ellipse.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |