US3750958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner nozzle
Assignee: Linde Sverige AB
•
Filing: 1971-10-07
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Granted: 1973-08-07
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Expires: 1991-10-07
Abstract
Abstract A burner nozzle for cutting purposes and provided with channels conducting cutting gas, burner gas and heating gas. The cutting gas channel extends rectilinearly through the entire nozzle. One of the other channels is annularly formed around the cutting gas channel and is connected at the outlet end of the nozzle to an annular chamber. Said chamber is connected with a plurality of narrow channels being inclined or turned relative the axis of the nozzle. Said narrow channels are mainly intended for the burning gas and said annularly formed channel is intended for the heating gas. The burning and heating gases are mixed when the heating gas flows out from said annular chamber in said inclined or turned channels. The gas mixture is arranged to flow annularly out around the jet of cutting gas and form a heating flame.
Inventors
- 👤 S Haselmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:32
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/52; F23D14/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
196 words
A burner nozzle for cutting purposes, provided with separate channels for cutting gas, burning gas and heating gas respectively, said channel for the cutting gas extending substantially rectilinearly through the entire nozzle and said channels for the burning and heating gases being connected with a chamber, the channel for either the burning gas or the heating gas being annularly formed around the cutting gas channel and being ended by said chamber near the outermost outlet end of the nozzle, said chamber being of annular form, the channels intended for that one of the burning and heating gases respectively not conducted via said annular channel being formed as a number of relatively narrow channels inclined relative to and about the axis of the nozzle so as not to share a common plane therewith and so as to impart a twist to the gas flow therein relative to the cutting gas flow, so that the heating gas is mixed in that short portion of said inclined channels connecting the annularly formed chamber to the outlet of the nozzle, said gas mixture being arranged to flow annularly out around the jet of cutting gas and form a heating flame.
Claim 2
Dependent Claim
196 words
A burner nozzle for cutting purposes, provided with separate channels for cutting gas, burning gas and heating gas respectively, said channel for the cutting gas extending substantially rectilinearly through the entire nozzle and said channels for the burning and heating gases being connected with a chamber, the channel for either the burning gas or the heating gas being annularly formed around the cutting gas channel and being ended by said chamber near the outermost outlet end of the nozzle, said chamber being of annular form, the channels intended for that one of the burning and heating gases respectively not conducted via said annular channel being formed as a number of relatively narrow channels inclined relative to and about the axis of the nozzle so as not to share a common plane therewith and so as to impart a twist to the gas flow therein relative to the cutting gas flow, so that the heating gas is mixed in that short portion of said inclined channels connecting the annularly formed chamber to the outlet of the nozzle, said gas mixture being arranged to flow annularly out around the jet of cutting gas and form a heating flame.
Claim 3
Dependent Claim
61 words
A nozzle according to claim 1, wherein said annular channel comprises the heating gas channel and is terminated with the annular chamber, said narrow channels which are inclined in relation to the axis of the nozzle being intended for the supply of burner gas, which is mixed with the heating gas as said heating gas flows out from the annular chamber.
Claim 4
Dependent Claim
41 words
A nozzle according to claim 2, wherein the interior of the annular chamber facing the wall of the cutting gas channel is provided with a raised portion which is arranged to direct the heating gas out towards the burning gas channel.
Claim 5
Dependent Claim
38 words
A nozzle according to claim 3, characterized in that the raised portion comprises a conical ring arranged on the wall of the cutting gas channel, the base of said ring lying near the outlet end of the nozzle.
Claim 6
Dependent Claim
99 words
A nozzle according to claim 2 wherein the cutting gas channel is arranged in a separate tubular portion which is surrounded by a first sleeve, between the inner wall of which first sleeve and the cylindrical surface of the cutting gaS tube is formed the annular heating gas channel, and the outer wall of which first sleeve is provided with a number of slots which together with a second sleeve surrounding the first sleeve form the burning gas channels, the annular chamber being in the form of a flared portion located at the inner wall of the first sleeve.
Claim 7
Dependent Claim
97 words
A nozzle according to claim 2 wherein the cutting gas channel is arranged in a separate tubular portion which is surrounded by a sleeve-like body, between the inner wall of which body and the cylindrical surface of the cutting gas tube is formed the annular heating gas channel and in the wall of which body is disposed a number of openings for forming the burning gas channels, said openings communicating with the heating gas channel via the annular chamber, which is in the form of a flared portion located adjacent the inner wall of the sleevelike body.
Claim 8
Dependent Claim
78 words
A nozzle according to claim 5 wherein the inlet end of the cutting gas tube is provided with an inlet head for all gases, the supply of cutting gas being effected centrally therein via an upper sealing cone, there being provided around the stream of cutting gas a number of jets for supplying heating gas via an intermediate sealing cone, and a number of supply channels to supply burning gas to the nozzle via a lower sealing cone.
Claim 9
Dependent Claim
24 words
A nozzle according to claim 2 wherein the burner gas channels are conically aligned with a focus point located externally of the nozzle orifice.
References Cited (Backward Citations)
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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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |