US3673771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-channel particle separator
Assignee: Avco Corp
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Filing: 1970-11-23
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Granted: 1972-07-04
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Expires: 1990-11-23
Abstract
Abstract A multi-channel particle separator for separating and removing foreign particles from engine inlet air is disclosed. The multichannel particle separator utilizes a plurality of concentric catching rings mounted in the air inlet passageway. The leading edge of each ring is mounted to the air swirl vanes. Each trailing or catching portion of the rings is connected with struts which serve as particle scavenge vanes and air deswirl vanes.
Inventors
- 👤 Thomas A Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:00
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; F; F01; F01D; F01D25/00; F01D25/32; F02; F02C; F02C7/00; F02C7/04; F02C7/05; F02C7/052; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
In a gas turbine engine, the combination comprising: an air intake passageway; a plurality of concentric separating elements mounted in said passageway, said elements having a particle entrapping portion at the trailing edge thereof; a row of circumferentially spaced radially extending swirl vanes mounted in said passageway for imparting a centrifugal action to particles passing therethrough, said row of vanes supporting the leading edge of said plurality of concentric separating elements; a row of circumferentially spaced hollow struts supporting the particle entrapping portion of each of said separating elements, said struts having openings therealong wherein said hollow interior of each strut is in communication with the particle entrapping portion for receiving particles entrapped thereby.
Claim 2
Dependent Claim
114 words
In a gas turbine engine, the combination comprising: an air intake passageway; a plurality of concentric separating elements mounted in said passageway, said elements having a particle entrapping portion at the trailing edge thereof; a row of circumferentially spaced radially extending swirl vanes mounted in said passageway for imparting a centrifugal action to particles passing therethrough, said row of vanes supporting the leading edge of said plurality of concentric separating elements; a row of circumferentially spaced hollow struts supporting the particle entrapping portion of each of said separating elements, said struts having openings therealong wherein said hollow interior of each strut is in communication with the particle entrapping portion for receiving particles entrapped thereby.
Claim 3
Dependent Claim
28 words
The combination according to claim 1 in which said concentric separating elements comprise cylinders and in which the catching portion of each separating cylinder is a catching lip.
Claim 4
Dependent Claim
37 words
The combination according to claim 2 in which said catching lips are displaced axially downstream one to the other and in which said hollow struts are deswirl vanes, each vane being radially extending in an axial direction.
Claim 5
Dependent Claim
36 words
The combination according to claim 3 in which the axial wall of each of said cylinders is contoured to enhance the inertia separation, said cylinders defining a plurality of annular passageways within the air intake passageway.
Claim 6
Dependent Claim
137 words
A particle separator in an inlet of a gas turbine engine comprising: a plurality of annular concentric rings mounted in the annular inlet passageway, each of said rings terminating in a catching lip, said rings defining a plurality of annular passageways within the inlet passageway; a row of circumferentially spaced radially extending swirl vanes mounted in the annular inlet passageway and supporting the leading edge of each of said concentric rings; a row of hollow deswirl vanes circumferentially spaced in the annular inlet passageway and supporting the catching lip portion of each of said annular rings, said deswirl vanes being formed with apertures complementary with each of said catching lips wherein said lip areas are in communication with the interior of said deswirl vanes whereby particles entrapped by said catching lip are transmitted into said deswirl vanes.
Claim 7
Dependent Claim
137 words
A particle separator in an inlet of a gas turbine engine comprising: a plurality of annular concentric rings mounted in the annular inlet passageway, each of said rings terminating in a catching lip, said rings defining a plurality of annular passageways within the inlet passageway; a row of circumferentially spaced radially extending swirl vanes mounted in the annular inlet passageway and supporting the leading edge of each of said concentric rings; a row of hollow deswirl vanes circumferentially spaced in the annular inlet passageway and supporting the catching lip portion of each of said annular rings, said deswirl vanes being formed with apertures complementary with each of said catching lips wherein said lip areas are in communication with the interior of said deswirl vanes whereby particles entrapped by said catching lip are transmitted into said deswirl vanes.
Claim 8
Dependent Claim
45 words
A particle separator according to claim 5 in which each of said annular rings is axially cOntoured to enhance the inertia separation and the catching lips are axially displaced one from the other to minimize pressure loss due to the drag of the catching lips.
Claim 9
Dependent Claim
20 words
The separator according to claim 6 in which each of said deswirl vanes is radially extending in an axial direction.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |