US3869246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable configuration combustion apparatus
Assignee: Motors Liquidation Co
•
Filing: 1973-12-26
•
Granted: 1975-03-04
•
Expires: 1993-12-26
Abstract
Abstract A combustion apparatus of a high energy release rate type includes a liner with variable primary and secondary air entrances. The primary air entrance may be adjusted to vary the amount of swirl of the primary air while retaining substantially constant flow area. The secondary air entrance is variable both in area and in location axially of the combustion liner.
Inventors
- 👤 Jr Dean C Hammond
- 👤 Galal N Matta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:18
CPC Classifications
F; F23; F23C; F23C7/00; F23C7/008; F23R; F23R3/00; F23R3/02; F23R3/26; F05; F05B; F05B2250/00; F05B2250/40; F05B2250/41; F05B2250/411
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
A combustion apparatus comprising a casing having an air inlet, a combustion liner of generally cylindrical configuration mounted in the casing, the liner having an upstream end and having a downstream end communicating with an outlet for combustion products, the liner defining primary air entrance means adjacent to the upstream end and secondary air entrance means intermediate the ends; and means adjacent to the upstream end for distributing fuel into the primary air; the said apparatus being characterized by variable configuration secondary air entrance means comprising a ring of ports through the liner; two valve sleeves reciprocable lengthwise of the liner, one sleeve being effective to obstruct variably the upstream ends of the ports and the other sleeve being effective to obstruct variably the downstream ends of the ports; and means for reciprocating the sleeves concurrently in the same direction to vary the effective location of the secondary air entrance means and for reciprocating the sleeves concurrently in opposite directions to vary the effective area of the secondary air entrance means.
Claim 2
Dependent Claim
171 words
A combustion apparatus comprising a casing having an air inlet, a combustion liner of generally cylindrical configuration mounted in the casing, the liner having an upstream end and having a downstream end communicating with an outlet for combustion products, the liner defining primary air entrance means adjacent to the upstream end and secondary air entrance means intermediate the ends; and means adjacent to the upstream end for distributing fuel into the primary air; the said apparatus being characterized by variable configuration secondary air entrance means comprising a ring of ports through the liner; two valve sleeves reciprocable lengthwise of the liner, one sleeve being effective to obstruct variably the upstream ends of the ports and the other sleeve being effective to obstruct variably the downstream ends of the ports; and means for reciprocating the sleeves concurrently in the same direction to vary the effective location of the secondary air entrance means and for reciprocating the sleeves concurrently in opposite directions to vary the effective area of the secondary air entrance means.
Claim 3
Dependent Claim
194 words
A combustion apparatus comprising a casing having an air inlet; a combustion liner of generally cylindrical configuration mounted in the casing, the liner having an upstream end and having a downstream end communicating with an outlet for combustion products, the liner defining primary air entrance means adjacent to the upstream end and secondary air entrance means intermediate the ends; and means adjacent to the upstream end for distributing fuel into the primary air; the said apparatus being characterized by variable configuration secondary air entrance means comprising a ring of ports through the liner; two valve sleeves reciprocable lengthwise of the liner, one sleeve being effective to obstruct variably the upstream ends of the ports and the other sleeve being effective to obstruct variably the downstream ends of the ports; and means for reciprocating the sleeves concurrently in the same direction to vary the effective location of the secondary air entrance means and for reciprocating the sleeves concurrently in opposite directions to vary the effective area of the secondary air entrance means, the last-named means including jointly reciprocable and jointly rotatable actuating rods coupled to the respective sleeves by reversely threaded screw and nut connections.
Claim 4
Dependent Claim
194 words
A combustion apparatus comprising a casing having an air inlet; a combustion liner of generally cylindrical configuration mounted in the casing, the liner having an upstream end and having a downstream end communicating with an outlet for combustion products, the liner defining primary air entrance means adjacent to the upstream end and secondary air entrance means intermediate the ends; and means adjacent to the upstream end for distributing fuel into the primary air; the said apparatus being characterized by variable configuration secondary air entrance means comprising a ring of ports through the liner; two valve sleeves reciprocable lengthwise of the liner, one sleeve being effective to obstruct variably the upstream ends of the ports and the other sleeve being effective to obstruct variably the downstream ends of the ports; and means for reciprocating the sleeves concurrently in the same direction to vary the effective location of the secondary air entrance means and for reciprocating the sleeves concurrently in opposite directions to vary the effective area of the secondary air entrance means, the last-named means including jointly reciprocable and jointly rotatable actuating rods coupled to the respective sleeves by reversely threaded screw and nut connections.
Claim 5
Dependent Claim
260 words
A combustion apparatus comprising a casing haviNg an air inlet; a combustion liner of generally cylindrical configuration mounted in the casing, the liner having an upstream end and having a downstream end communicating with an outlet for combustion products, the liner defining primary air entrance means adjacent to the upstream end and secondary air entrance means intermediate the ends; and means adjacent to the upstream end for distributing fuel into the primary air; the said apparatus being characterized by variable swirl primary air entrance means and by variable configuration secondary air entrance means; the primary air entrance means comprising two sets of flow guides alternating around the liner, so that the guides define between them two sets of primary air inlet passages with the sets alternating and with the passages of one set directing the air with a different swirl component from the other set; and means for concurrently moving the guides of one set so as to vary relatively the areas of the passages of the two sets; the secondary air entrance means comprising a ring of ports through the liner; two valve sleeves reciprocable lengthwise of the liner, one sleeve being effective to obstruct variably the upstream ends of the ports and the other sleeve being effective to obstruct variably the downstream ends of the ports; and means for reciprocating the sleeves concurrently in the same direction to vary the effective location of the secondary air entrance means and for reciprocating the sleeves concurrently in opposite directions to vary the effective area of the secondary air entrance means.
Claim 6
Dependent Claim
260 words
A combustion apparatus comprising a casing haviNg an air inlet; a combustion liner of generally cylindrical configuration mounted in the casing, the liner having an upstream end and having a downstream end communicating with an outlet for combustion products, the liner defining primary air entrance means adjacent to the upstream end and secondary air entrance means intermediate the ends; and means adjacent to the upstream end for distributing fuel into the primary air; the said apparatus being characterized by variable swirl primary air entrance means and by variable configuration secondary air entrance means; the primary air entrance means comprising two sets of flow guides alternating around the liner, so that the guides define between them two sets of primary air inlet passages with the sets alternating and with the passages of one set directing the air with a different swirl component from the other set; and means for concurrently moving the guides of one set so as to vary relatively the areas of the passages of the two sets; the secondary air entrance means comprising a ring of ports through the liner; two valve sleeves reciprocable lengthwise of the liner, one sleeve being effective to obstruct variably the upstream ends of the ports and the other sleeve being effective to obstruct variably the downstream ends of the ports; and means for reciprocating the sleeves concurrently in the same direction to vary the effective location of the secondary air entrance means and for reciprocating the sleeves concurrently in opposite directions to vary the effective area of the secondary air entrance means.
References Cited (Backward Citations)
US1781236A
Cited
US3544246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |