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(12) Patent: | (11) CA 2416157 |
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(54) English Title: | DISPOSITIF POUR REDRESSER L'AIR D'ALIMENTATION D'UN PRELEVEMENT CENTRIPETE DANS UN COMPRESSEUR |
(54) French Title: | DEVICE FOR ADJUSTING INTAKE AIR FOR A CENTRIPETAL COMPRESSOR |
Status: | Term Expired - Post Grant Beyond Limit |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | LAVERY, DE BILLY, LLP |
(74) Associate agent: | |
(45) Issued: | 2011-05-17 |
(22) Filed Date: | 2003-01-15 |
(41) Open to Public Inspection: | 2003-07-17 |
Examination requested: | 2008-01-03 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | French |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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The invention provides an axial compressor for a turbomachine, the compressor being fitted with a device (2) for centripetally bleeding turbine-cooling air from a stream (5) of air flowing through said compressor, said compressor comprising two rings of moving blades (4, 7) extending radially outwards from the peripheries of two consecutive disks (3, 6) joined together by an outer shroud (9) having holes (14), and further comprising a fixed ring of stator vanes (8) placed in the stream (5) between said moving rings of blades, said holes serving as air inlets to said bleed device and opening out into an annular groove (12) provided beneath the interstice (13) separating the inner platforms (11) of the stator vanes (8) from the rim of the upstream disk, said groove communicating with said stream via said interstice, wherein the groove (12) is fitted with fixed air guide means (20) imparting centripetal swirling motion on the air flowing in said groove (12), the motion rotating in the same direction as the compressor so as to reduce the velocity of the air entering into the holes (14) relative to said rotating holes. These guide means comprise guide profiles fixed beneath the inner platforms (11) of the stator vanes (8).
L'invention concerne un compresseur axial de turbomachine
équipé d'un dispositif (2) de prélèvement centripète d'air dans la veine (5)
dudit compresseur, cet air étant destiné au refroidissement de la turbine,
ledit compresseur comportant deux couronnes d'aubes mobiles (4, 7) qui
s'étendent radialement vers l'extérieur à la périphérie de deux disques
consécutifs (3, 6) assemblés par une virole extérieure (9) munie de
perçages (14) et une couronne d'aubes redresseuses (8) fixes disposée
dans la veine (5) entre lesdits deux couronnes d'aubes mobiles, lesdits
perçages servant d'entrées d'air audit dispositif de prélèvement et
débouchant dans une gorge annulaire (12) prévue sous l'interstice (13)
séparant les plates-formes intérieures (11) des aubes redresseuses (8) de
la jante du disque amont, ladite gorge communiquant avec ladite veine
par ledit interstice, caractérisé en ce que la gorge (12) est équipée de
moyens de guidage fixes (20) imprimant au flux d'air circulant dans ladite
gorge (12) un mouvement tourbillonnaire centripète dans le sens de
rotation du compresseur afin de diminuer la vitesse relative de l'air entrant
dans les perçages (14) par rapport auxdits perçages en rotation. Ces
moyens de guidage comportent des profils d'aubage fixés sous les
plates-formes intérieures (11) des aubes redresseuses (8).
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Inactive: Expired (new Act pat) | 2023-01-16 |
Common Representative Appointed | 2019-10-30 |
Common Representative Appointed | 2019-10-30 |
Revocation of Agent Request | 2018-09-14 |
Appointment of Agent Request | 2018-09-14 |
Inactive: Agents merged | 2018-09-01 |
Inactive: Agents merged | 2018-08-30 |
Grant by Issuance | 2011-05-17 |
Inactive: Cover page published | 2011-05-16 |
Pre-grant | 2011-03-01 |
Inactive: Final fee received | 2011-03-01 |
Notice of Allowance is Issued | 2010-09-21 |
Letter Sent | 2010-09-21 |
Notice of Allowance is Issued | 2010-09-21 |
Inactive: Approved for allowance (AFA) | 2010-09-14 |
Amendment Received - Voluntary Amendment | 2010-02-16 |
Inactive: S.30(2) Rules - Examiner requisition | 2009-08-27 |
Amendment Received - Voluntary Amendment | 2008-05-15 |
Letter Sent | 2008-03-12 |
Letter Sent | 2008-02-22 |
Letter Sent | 2008-02-22 |
Letter Sent | 2008-02-22 |
Letter Sent | 2008-02-22 |
Letter Sent | 2008-02-22 |
Letter Sent | 2008-02-22 |
Letter Sent | 2008-02-22 |
All Requirements for Examination Determined Compliant | 2008-01-03 |
Request for Examination Requirements Determined Compliant | 2008-01-03 |
Request for Examination Received | 2008-01-03 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Application Published (Open to Public Inspection) | 2003-07-17 |
Inactive: Cover page published | 2003-07-16 |
Inactive: First IPC assigned | 2003-03-10 |
Inactive: Filing certificate - No RFE (French) | 2003-02-18 |
Letter Sent | 2003-02-18 |
Application Received - Regular National | 2003-02-18 |
There is no abandonment history.
The last payment was received on 2010-12-21
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
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Please refer to the CIPO
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Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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SNECMA |
Past Owners on Record |
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ALEXANDRE ROY |
ANTOINE BRUNET |
PATRICK PASQUIS |