US5440874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbo-engine provided with a device for blowing air onto a rotor element
Assignee: Safran Aircraft Engines SAS
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Filing: 1994-07-14
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Granted: 1995-08-15
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Expires: 2014-07-14
Abstract
Abstract A turbojet engine includes a combustion chamber located upstream of a turbine, the turbine having a rotor disk integrally bladed with vanes and including a channel blowing gas from a position outside a wall of the combustion chamber to a peripheral zone of the rotor disk adjacent to the vanes, a channel divided in front of a zone adjacent to the vanes into an internal channel and an external channel surrounding the internal channel, wherein the internal channel has a greater cross-section than the external channel and wherein the external channel converges upon approaching an outlet thereof so as to accelerate the gas flowing therethrough and prevent gas which passed through the internal channel from being dispersed.
Inventors
- 👤 Gilles A. Charier
- 👤 J. M. A. Guyonnet Xavier
- 👤 Jean-Louis Picard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:15
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F05; F05B; F05B2240/00; F05B2240/80; F05B2240/801; F05D; F05D2240/00; F05D2240/80; F05D2240/81; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
Turbojet engine which comprises: a combustion chamber located upstream of a turbine, said turbine having a rotor disk integrally bladed with vanes and including a channel blowing gas from a position outside a wall of the combustion chamber to a peripheral zone of the rotor disk adjacent to the vanes, a channel divided in front of a zone adjacent to the vanes into an internal channel and an external channel surrounding the internal channel, wherein the internal channel has a greater cross-section than the external channel and wherein the external channel converges upon approaching an outlet thereof so as to accelerate the gas flowing therethrough and prevent gas which has passed through the internal channel from being dispersed.
Claim 2
Dependent Claim
118 words
Turbojet engine which comprises: a combustion chamber located upstream of a turbine, said turbine having a rotor disk integrally bladed with vanes and including a channel blowing gas from a position outside a wall of the combustion chamber to a peripheral zone of the rotor disk adjacent to the vanes, a channel divided in front of a zone adjacent to the vanes into an internal channel and an external channel surrounding the internal channel, wherein the internal channel has a greater cross-section than the external channel and wherein the external channel converges upon approaching an outlet thereof so as to accelerate the gas flowing therethrough and prevent gas which has passed through the internal channel from being dispersed.
Claim 3
Dependent Claim
42 words
Turbojet engine according to claim 1, which comprises a distributor wherein the turbine is separated from the combustion chamber by said distributor and said distributor includes a ring located opposite a peripheral zone of the rotor and traversed by the communication channel.
Claim 4
Dependent Claim
26 words
Turbojet engine according to claim 1, wherein the internal channel is provided with a swirling device swirling the gas so as to have a rotational velocity.
Claim 5
Dependent Claim
24 words
Turbojet engine according to claim 3, wherein the peripheral zone is formed with a recess having orifices situated in front of the internal channel.
Claim 6
Dependent Claim
27 words
Turbojet engine according to claim 4, wherein the vanes of the rotor have cavities and the recess communicates with the cavities of the vanes of the rotor.
Claim 7
Dependent Claim
27 words
Turbojet engine according to claim 1, wherein each of said internal channel and external channel are unobstructed and are continuously open during operation of the turbojet engine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-14 | 1999-02-13 | 1999-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-14 | 2003-02-13 | 2003-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-14 | 2007-02-13 | 2007-08-15 | $7700.00 | Window Closed / Lapsed |