US3924403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion liner spring support used for hot wire igniter circuit
Assignee: Motors Liquidation Co
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Filing: 1974-10-24
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Granted: 1975-12-09
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Expires: 1994-10-24
Abstract
Abstract A combustion liner for a gas turbine combustion apparatus is composed of a series of ceramic wall rings coaxially aligned from the upstream to the downstream end of the liner. The ceramic rings are connected so as to be free to expand radially relative to each other while maintaining alignment. One type of connection between the rings involves notches distributed around the ends of a ring and bosses distributed around the adjacent end of the next ring entering into the notches. Another type of interconnection involves notches distributed around adjacent ends of two ceramic rings with a metal ring disposed between them having bosses which engage in some of the notches to align the parts. The liner is supported by supports at the ends of the liner from an outer casing. One support includes a spring to accommodate relative expansion of the liner and outer casing. A hot wire type fuel igniter disposed around the fuel nozzle of the combustion apparatus is energized by a circuit through the compression spring with return to the grounded casing through the fuel nozzle.
Inventors
- 👤 John A Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:24
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26; F02C7/264; F02C7/266; F23; F23R; F23R3/00; F23R3/007
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
A combustion apparatus for a gas turbine engine or the like comprising, in combination, a casing adapted to receive air under pressure; a combustion liner mounted within the casing defining a reaction zone; a fuel nozzle extending from the casing into the liner; the liner including a conductive support ring disposed about the nozzle and grounded to the casing through the nozzle; means for mounting the liner within the casing including a compression spring extending from the casing to the liner around the fuel nozzle; an ignition current lead extending through the casing into contact with the spring, the lead and spring being insulated from the casing and the support ring; hot wire means for fuel ignition disposed adjacent to the fuel nozzle, the hot wire means having one end grounded to the support ring and one end insulated from the support ring and connected to the spring.
Claim 2
Dependent Claim
148 words
A combustion apparatus for a gas turbine engine or the like comprising, in combination, a casing adapted to receive air under pressure; a combustion liner mounted within the casing defining a reaction zone; a fuel nozzle extending from the casing into the liner; the liner including a conductive support ring disposed about the nozzle and grounded to the casing through the nozzle; means for mounting the liner within the casing including a compression spring extending from the casing to the liner around the fuel nozzle; an ignition current lead extending through the casing into contact with the spring, the lead and spring being insulated from the casing and the support ring; hot wire means for fuel ignition disposed adjacent to the fuel nozzle, the hot wire means having one end grounded to the support ring and one end insulated from the support ring and connected to the spring.
Claim 3
Dependent Claim
157 words
A combustion apparatus for a gas turbine engine or the like comprising, in combination, a casing adapted to receive air under pressure; a combustion liner mounted within the casing defining a reaction zone; a fuel nozzle extending from the casing into the liner; the liner including a conductive support ring disposed about the nozzle and grounded to the casing through the nozzle; means for mounting the liner within the casing including a compression spring extending from the casing to the liner around the fuel nozzle; a conductive distributing ring disposed around the nozzle adjacent to the support ring and insulated from the support ring; means including the spring for conducting ignition current to the distributing ring; and a crown of rebent hot wires for fuel ignition disposed adjacent to the fuel nozzle, each hot wire having one end grounded to the support ring and one end insulated from the support ring and connected to the distributing ring.
Claim 4
Dependent Claim
157 words
A combustion apparatus for a gas turbine engine or the like comprising, in combination, a casing adapted to receive air under pressure; a combustion liner mounted within the casing defining a reaction zone; a fuel nozzle extending from the casing into the liner; the liner including a conductive support ring disposed about the nozzle and grounded to the casing through the nozzle; means for mounting the liner within the casing including a compression spring extending from the casing to the liner around the fuel nozzle; a conductive distributing ring disposed around the nozzle adjacent to the support ring and insulated from the support ring; means including the spring for conducting ignition current to the distributing ring; and a crown of rebent hot wires for fuel ignition disposed adjacent to the fuel nozzle, each hot wire having one end grounded to the support ring and one end insulated from the support ring and connected to the distributing ring.
Claim 5
Dependent Claim
180 words
A combustion apparatus for a gas turbine engine or the like comprising, in combination, a casing adapted to receive air under pressure; a combustion liner mounted within the casing defining a reaction zone; a fuel nozzle extending from the casing into the liner; the liner including a conductive support ring disposed about the nozzle and grounded to the casing through the nozzle; means for mounting the liner within the casing including a compression spring extending from the casing to the liner around the fuel nozzle; an ignition current lead extending through the casing into contact with the spring, the lead and spring being insulated from the casing and the support ring; a conduCtive distributing ring disposed around the nozzle adjacent to the support ring and insulated from the support ring, the distributing ring being electrically connected to the spring; and a crown of rebent hot wires for fuel ignition disposed adjacent to the fuel nozzle, each hot wire having one end grounded to the support ring and one end insulated from the support ring and connected to the distributing ring.
Claim 6
Dependent Claim
180 words
A combustion apparatus for a gas turbine engine or the like comprising, in combination, a casing adapted to receive air under pressure; a combustion liner mounted within the casing defining a reaction zone; a fuel nozzle extending from the casing into the liner; the liner including a conductive support ring disposed about the nozzle and grounded to the casing through the nozzle; means for mounting the liner within the casing including a compression spring extending from the casing to the liner around the fuel nozzle; an ignition current lead extending through the casing into contact with the spring, the lead and spring being insulated from the casing and the support ring; a conduCtive distributing ring disposed around the nozzle adjacent to the support ring and insulated from the support ring, the distributing ring being electrically connected to the spring; and a crown of rebent hot wires for fuel ignition disposed adjacent to the fuel nozzle, each hot wire having one end grounded to the support ring and one end insulated from the support ring and connected to the distributing ring.
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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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |