US3898799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for bleeding-off compressor air in turbine jet engine
Assignee: MTU Aero Engines AG
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Filing: 1973-09-27
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Granted: 1975-08-12
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Expires: 1993-09-27
Abstract
Abstract Apparatus for bleeding off compressor air in a turbine engine of the type having a plurality of serially arranged compressors. The apparatus includes a first annular chamber communicated directly with compressor air from one of the compressors and a second annular chamber communicated directly with atmosphere or with a bypass duct of the engine. Arranged in between the first and second chambers are internal and external rings slideable with respect to one another with the external ring having openings which are controlled by the position of the internal ring. Actuating means, including a radially extending actuating shaft and a pair of pivotally connected levers interconnecting the internal ring and the actuating shaft are provided for moving the internal ring with respect to the external ring. The internal ring is provided with guide slots and the external ring is provided with guide rollers for guiding relative movement of the internal and external rings such that the internal ring simultaneously moves both circumferentially and axially during adjustments thereof.
Inventors
- 👤 Wolfgang Pollert
- 👤 Eckhard Kraft
- 👤 Gregor Pennig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:27
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207; F04D27/0215; F04D27/023
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
183 words
Apparatus for bleeding off compressor air in a turbine engine of the type having a longitudinal center line and a plurality of mechanically independent compressors; and apparatus comprising: a first chamber communicated directly with compressor air from one of said compressors, an internal ring positioned in said first chamber, an external ring positioned downstream of said internal ring with respect to air flow through said turbine engine, positioned adjacent and externally of said internal ring with respect to said center line, and including a plurality of openings, a second chamber communicated with bypass means of the engine which bypass means accommodates air flow therein in bypassing relationship to an engine combustion chamber arranged downstream of said compressors, and internal ring actuating means for moving said internal ring between closed positions with said internal ring blocking said openings in said external ring to prevent flow from said first chamber to said second chamber and open positions with said internal ring out of blocking relationship with respect to said openings such that air can flow from said first to said second chamber through said openings.
Claim 2
Dependent Claim
183 words
Apparatus for bleeding off compressor air in a turbine engine of the type having a longitudinal center line and a plurality of mechanically independent compressors; and apparatus comprising: a first chamber communicated directly with compressor air from one of said compressors, an internal ring positioned in said first chamber, an external ring positioned downstream of said internal ring with respect to air flow through said turbine engine, positioned adjacent and externally of said internal ring with respect to said center line, and including a plurality of openings, a second chamber communicated with bypass means of the engine which bypass means accommodates air flow therein in bypassing relationship to an engine combustion chamber arranged downstream of said compressors, and internal ring actuating means for moving said internal ring between closed positions with said internal ring blocking said openings in said external ring to prevent flow from said first chamber to said second chamber and open positions with said internal ring out of blocking relationship with respect to said openings such that air can flow from said first to said second chamber through said openings.
Claim 3
Dependent Claim
47 words
Apparatus according to claim 1, wherein each of said chambers are annular chambers which extend around said longitudinal centerline of the engine which center line forms the axes of rotation for compressor wheels, and wherein each of said rings are annular rings which extend about said centerline.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 2, wherein said actuating means includes means for moving said internal ring in both axial and circumferential directions with respect to said centerline.
Claim 5
Dependent Claim
50 words
Apparatus according to claim 3, further comprising two annular seal rings on said internal ring which sealingly engage said external ring to form a third annular chamber between said internal and external rings which is sealed relative to said first chamber when said internal ring is in said closed positions.
Claim 6
Dependent Claim
39 words
Apparatus according to claim 4, wherein said external ring is supported elastically at one axial end thereof and is sealed relative to the first chamber by seal means separate from said seal rings adjacent the other axial end thereof.
Claim 7
Dependent Claim
34 words
Apparatus according to claim 3, wherein said external ring is supported elastically at one axial end thereof and is sealed relative to the first chamber by seal means adjacent the other axial end thereof.
Claim 8
Dependent Claim
54 words
Apparatus according to claim 1, wherein said actuating means includes: a rotatable actuating shaft extending through a bypass duct of said engine in a radial direction with respect to said centerline, an actuating lever movable with said actuating shaft and an intermediate lever pivotally connected to both said actuating lever and said internal ring.
Claim 9
Dependent Claim
54 words
Apparatus according to claim 3, wherein said actuating means includes: a rotatable actuating shaft extending through a bypass duct of said engine in a radial direction with respect to said centerline, an actuating lever movable with said actuating shaft and an intermediate lever pivotally connected to both said actuating lever and said internal ring.
Claim 10
Dependent Claim
54 words
Apparatus according to claim 5, wherein said actuating means includes: a rotatable actuating shaft extending through a bypass duct of said engine in a radial direction with respEct to said centerline, an actuating lever movable with said actuating shaft and an intermediate lever pivotally connected to both said actuating lever and said internal ring.
Claim 11
Dependent Claim
40 words
Apparatus according to claim 7, wherein said actuating and intermediate levers are connected to one another by a first spherical bearing, and wherein said intermediate lever and said internal ring are connected to one another by a second spherical bearing.
Claim 12
Dependent Claim
40 words
Apparatus according to claim 8, wherein said actuating and intermediate levers are connected to one another by a first spherical bearing, and wherein said intermediate lever and said internal ring are connected to one another by a second spherical bearing.
Claim 13
Dependent Claim
40 words
Apparatus according to claim 9, wherein said actuating and intermediate levers are connected to one another by a first spherical bearing, and wherein said intermediate lever and said internal ring are connected to one another by a second spherical bearing.
Claim 14
Dependent Claim
67 words
Aapparatus according to claim 1, wherein said actuating means includes: a plurality of circumferentially spaced guide slots in said internal ring which are inclined in accordance with the direction of movement of said internal ring, and rollers mounted on said external ring and engageable in said guide slots for accomodating and guiding movement of said internal ring with respect to said external ring over a predetermined path.
Claim 15
Dependent Claim
67 words
Apparatus according to claim 7, wherein said actuating means includes: a plurality of circumferentially spaced guide slots in said internal ring which are inclined in accordance with the direction of movement of said internal ring, and rollers mounted on said external ring and engageable in said guide slots for accommodating and guiding movement of said internal ring with respect to said external ring over a predetermined path.
Claim 16
Dependent Claim
67 words
Apparatus according to claim 8, wherein said actuating means includes: a plurality of circumferentially spaced guide slots in said internal ring which are inclined in accordance with the direction of movement of said internal ring, and rollers mounted on said external ring and engageable in said guide slots for accommodating and guiding movement of said internal ring with respect to said external ring over a predetermined path.
Claim 17
Dependent Claim
67 words
Apparatus according to claim 10, wherein said actuating means includes: a plurality of circumferentially spaced guide slots in said internal ring which are inclined in accordance with the direction of movement of said internal ring, and rollers mounted on said external ring and engageable in said guide slots for accommodating and guiding movement of said internal ring with respect to said external ring over a predetermined path.
Claim 18
Dependent Claim
67 words
Apparatus according to claim 11, wherein said actuating means includes: a plurality of circumferentially spaced guide slots in said internal ring which are inclined in accordance with the direction of movement of said internal ring, and rollers mounted on said external ring and engageable in said guide slots for accommodating and guiding movement of said internal ring with respect to said external ring over a predetermined path.
Claim 19
Dependent Claim
21 words
Apparatus according to claim 13, wherein said rollers are adjustable by means of eccentric pins interconnecting them with the external ring.
Claim 20
Dependent Claim
21 words
Apparatus according to claim 15, wherein said rollers are adjustable by means of eccentric pins interconnecting them with the external ring.
Claim 21
Dependent Claim
21 words
Apparatus according to claim 17, wherein said rollers are adjustable by means of eccentric pins interconnecting them with the external ring.
Claim 22
Dependent Claim
49 words
Apparatus according to claim 1, wherein said actuating means includes guide slots in one of said internal and external rings and rollers mounted in the other of said internal and external rings for engagement in said guide slots to forcibly guide relative movement of said external and internal rings.
Claim 23
Dependent Claim
30 words
Apparatus according to claim 21, wherein said guide slots are configured to assure movement of said internal ring simultaneoUsly in axial and circumferential directions with respect to an engine centerline.
Claim 24
Dependent Claim
48 words
Apparatus according to claim 21, wherein each of said chambers are annular chambers which extend around said longitudinal centerline of the engine which center line forms the axes of rotation for the compressor wheels, and wherein each of said rings are annular rings which extend about said centerline.
Claim 25
Dependent Claim
27 words
Apparatus according to claim 23, wherein said actuating means includes means for moving said internal ring in both axial and circumferential directions with respect to said centerline.
Claim 26
Dependent Claim
30 words
Apparatus according to claim 24, wherein said guide slots are configured to assure movement of said internal ring simultaneously in axial and circumferential directions with respect to an engine centerline.
Claim 27
Dependent Claim
54 words
Apparatus according to claim 25, wherein said actuating means includes; a rotatable actuating shaft extending through a bypass duct of said engine in a radial direction with respect to said centerline, an actuating lever movable with said actuating shaft and an intermediate lever pivotally connected to both said actuating lever and said internal ring.
Claim 28
Dependent Claim
40 words
Apparatus according to claim 26, wherein said actuating and intermediate levers are connected to one another by a first spherical bearing, and wherein said intermediate lever and said internal ring are connected to one another by a second spherical bearing.
Claim 29
Dependent Claim
14 words
Apparatus according to claim 21, wherein said guide slots are of thread-type spiral shape.
Claim 30
Dependent Claim
14 words
Apparatus according to claim 27, wherein said guide slots are of thread-type spiral shape.
Claim 31
Dependent Claim
14 words
Apparatus according to claim 13, wherein said guide slots are of thread-type spiral shape.
Claim 32
Dependent Claim
19 words
Apparatus according to claim 3, wherein said openings are uniformly shaped around the circumference of said external annular ring.
Claim 33
Dependent Claim
33 words
Apparatus according to claim 24, wherein said openings are uniformly shaped around the circumference of said external annular ring, and wherein said guide slots are uniformly spaced around the circumference of said rings.
Claim 34
Dependent Claim
179 words
Apparatus for bleeding off compressor air in a turbine engine of the type having a longitudinal center line and compressor means, said apparatus comprising: a first chamber communicated directly with compressor air from said compressor means, a first ring positioned in said first chamber, a second ring positioned adjacent said first ring and downstream of said first ring with respect to air flow through said turbine engine, a plurality of openings in said second ring, a second chamber communicated with bypass means of the engine which bypass means accommodates air flow therein in bypassing relationship to an engine combustion chamber arranged downstream of said compressor means, and ring actuating means for causing relative movement between said first and second rings between closed positions with respective of said rings in blocking relationship to the openings in the other of said rings to prevent flow from said first chamber to said second chamber and open positions with said rings out of blocking relationship of the openings such that air can flow from said first to said second chamber through said openings.
Claim 35
Dependent Claim
179 words
Apparatus for bleeding off compressor air in a turbine engine of the type having a longitudinal center line and compressor means, said apparatus comprising: a first chamber communicated directly with compressor air from said compressor means, a first ring positioned in said first chamber, a second ring positioned adjacent said first ring and downstream of said first ring with respect to air flow through said turbine engine, a plurality of openings in said second ring, a second chamber communicated with bypass means of the engine which bypass means accommodates air flow therein in bypassing relationship to an engine combustion chamber arranged downstream of said compressor means, and ring actuating means for causing relative movement between said first and second rings between closed positions with respective of said rings in blocking relationship to the openings in the other of said rings to prevent flow from said first chamber to said second chamber and open positions with said rings out of blocking relationship of the openings such that air can flow from said first to said second chamber through said openings.
Claim 36
Dependent Claim
49 words
Apparatus according to claim 33, wherein said actuating means includes guide slots in one of said first and second rings and rollers mounted in the other of said first and second rings for engagement in said guide slots to forcibly guide relative movement of said second and first rings.
Claim 37
Dependent Claim
33 words
Apparatus according to claim 34, wherein said guide slots are configured to assure relative movement of said first and second rings simultaneously in axial and circumferential directions with respect to an engine centerline.
Claim 38
Dependent Claim
50 words
Apparatus according to claim 35, further comprising two annular seal rings on said first ring which sealingly engage said second ring to form a third annular chamber between said first and second rings which is sealed relative to said first chambeR when said first ring is in said closed positions.
Claim 39
Dependent Claim
54 words
Apparatus according to claim 35, wherein said actuating means includes: a rotatable actuating shaft extending through a bypass duct of said engine in a radial direction with respect to said centerline, an actuating lever movable with said actuating shaft and an intermediate lever pivotally connected to both said actuating lever and said first ring.
Claim 40
Dependent Claim
54 words
Apparatus according to claim 37, wherein said actuating means includes: a rotatable actuating shaft extending through a bypass duct of said engine in a radial direction with respect to said centerline, an actuating lever movable with said actuating shaft and an intermediate lever pivotally connected to both said actuating lever and said first ring.
Claim 41
Dependent Claim
29 words
Apparatus according to claim 35, wherein said engine includes three serially arranged compressors, and wherein said first chamber communicates with the outlet of the middle one of said compressors.
Claim 42
Dependent Claim
25 words
Apparatus according to claim 1, further comprising annular seal rings movable with and provided on said internal ring which seal rings engage said external ring.
Claim 43
Dependent Claim
21 words
Apparatus according to claim 40, wherein said seal rings engage said external ring when said openings are in said open position.
Claim 44
Dependent Claim
19 words
Apparatus according to claim 40, wherein said seal rings extend substantially radially with respect to said longitudinal center line.
Claim 45
Dependent Claim
15 words
Apparatus according to claim 1, wherein said bypass means communicate said second chamber to atmosphere.
Claim 46
Dependent Claim
16 words
Apparatus according to claim 1, wherein said bypass means is a bypass duct in said engine.
Claim 47
Dependent Claim
15 words
Apparatus according to claim 33, wherein said bypass means communicate said second chamber to atmosphere.
Claim 48
Dependent Claim
16 words
Apparatus according to claim 33, wherein said bypass means is a bypass duct in said 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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |