US3733165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel combustion device
Assignee: Daido Sans KK
•
Filing: 1971-03-29
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Granted: 1973-05-15
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Expires: 1991-03-29
Abstract
Abstract Through a combination of A. THE SUPPLY OF OXYGEN SUBSTANTIALLY IN THE FORM OF PURE OXYGEN IN AN AMOUNT FAR LESS THAN THAT THEORETICALLY REQUIRED FOR COMBUSTION OF LIQUID FUEL TO BE BURNED IN SUCH A MANNER AS TO ATTAIN A VERY RAPID COMBUSTION TEMPERATURE RISE, B. WITH THE STRONG ACTIVATION OF THE LIQUID FUEL BY MIXING AND ATOMIZATION OF A PART OF THE FUEL LIQUID SUFFICIENTLY WITH THE OXYGEN, LIMITED IN QUANTITY, CLOSELY ADJACENT TO A LIQUID FUEL NOZZLE THEREBY TO FORM A HIGH-TEMPERATURE CENTER FLAME VERY CLOSE TO THE NOZZLE. C. A HIGH-TEMPERATURE FLAME HAVING A LARGE POTENTIAL HEAT PER UNIT VOLUME THEREOF, THAT IS, A FLAME OF EXTREMELY HIGH INTENSITY, IS OBTAINED EFFICIENTLY WITH A SMALL SUPPLY OF OXYGEN.
Inventors
- 👤 M Nakagawa
- 👤 T Hirai
- 👤 Y Suzuki
- 👤 R Kimura
- 👤 M Okahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:50
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A method of producing a flame from an oil burner, which has a high intensity and a high calorific value per unit volume comprising the steps of supplying high purity oxygen through a conduit to a first nozzle; introducing liquid fuel through a concentrically disposed conduit to a second nozzle; diverting a portion of the liquid fuel in said other conduit into the first nozzle supplying the air to the burner; mixing the air and the diverted portion of liquid in the nozzle and emitting therefrom a flame having a temperature ranging between about 1700*C to about 2200*C; and furnishing gas through a second concentrically disposed conduit to a third nozzle to complete atomization and dispersion of the oil being emitted from the second nozzle by the flame ejected from the first nozzle.
Claim 2
Independent Claim
133 words
A method of producing a flame from an oil burner, which has a high intensity and a high calorific value per unit volume comprising the steps of supplying high purity oxygen through a conduit to a first nozzle; introducing liquid fuel through a concentrically disposed conduit to a second nozzle; diverting a portion of the liquid fuel in said other conduit into the first nozzle supplying the air to the burner; mixing the air and the diverted portion of liquid in the nozzle and emitting therefrom a flame having a temperature ranging between about 1700*C to about 2200*C; and furnishing gas through a second concentrically disposed conduit to a third nozzle to complete atomization and dispersion of the oil being emitted from the second nozzle by the flame ejected from the first nozzle.
Claim 3
Dependent Claim
46 words
A method of producing a flame from an oil burner as claimed in claim 1, further including the steps of emitting the oil and gas from their respective nozzles in a divergent direction and toward the flow line of the oxygen emitted from the first nozzle.
Claim 4
Dependent Claim
29 words
A method of producing a flame from an oil burner as claimed in claim 1, wherein the oxygen is under low pres-sure of about 0.3 to 2.0 kg/cm2 G.
Claim 5
Dependent Claim
40 words
A method of producing a flame from an oil burner as claimed in claim 1, wherein the oxygen is introduced to the first nozzle in an amount between 2-15 percent of that theoretically required for combustion of the liquid fuel.
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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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |