Patent US3766942A successfully refreshed from Google Patents.
US3766942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for supplying an emulsion of liquid fuel and water to a heating burner
Assignee: Elf Antar France
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Filing: 1971-06-01
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Granted: 1973-10-23
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Expires: 1991-06-01
Abstract
Abstract A process and system for supplying an emulsion of liquid fuel and water to a burner capable of operating at a low heating rate and at least another higher heating rate. After stopping the normal heating and for re-igniting the burner, a part of the burner is connected to discharge to the fuel tank without pressure and the burner is first supplied with liquid fuel alone under pressure so as to expel the emulsion which filled the burner when the burner extinguished. The burner filled with liquid fuel alone is ignited and then supplied with the emulsion in accordance with the desired heating rate.
Inventors
- 👤 R Gunthart
- 👤 A Meissner
- 👤 C Delatronchette
- 👤 R Helton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:51
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/08; F23K5/10; F23K5/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2511; Y10T137/8593; Y10T137/85978; Y10T137/86131
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
258 words
In a system for supplying an emulsion of liquid fuel and water to a first heating burner nozzle which defines a cavity receiving the emulsion and having an inlet, comprising pressurized liquid fuel supply means including a liquid fuel tank, pressurized water supply means emulsifying means having two inlets respectively connected to the fuel supply means and water supply means and an outlet, and a pump having an inlet connected to the outlet of the emulsifying means and an outlet connected to the inlet of the nozzle; the provision of a fuel discharge outlet in the nozzle, a dischArge conduit disposed between the outlet of the first nozzle and the tank, a first valve in the conduit, said first valve being in an open position at the start up of the system, a second valve in the water supply means and being in a closed position at the start up of the system, means connected to the first valve and the second valve for substantially simultaneously closing the first valve and opening up the second valve after the pump has been started up, whereby to permit automatically first expelling the fuel and water emulsion from the nozzle cavity by way of said conduit and supplying instead solely the liquid fuel to the nozzle cavity upon starting up the pump when starting up the burner and thereby facilitate ignition of the nozzle and thereafter allowing said emulsion to be supplied to the nozzle by substantially simultaneous closure of the first valve means and opening of the second valve means.
Claim 2
Dependent Claim
258 words
In a system for supplying an emulsion of liquid fuel and water to a first heating burner nozzle which defines a cavity receiving the emulsion and having an inlet, comprising pressurized liquid fuel supply means including a liquid fuel tank, pressurized water supply means emulsifying means having two inlets respectively connected to the fuel supply means and water supply means and an outlet, and a pump having an inlet connected to the outlet of the emulsifying means and an outlet connected to the inlet of the nozzle; the provision of a fuel discharge outlet in the nozzle, a dischArge conduit disposed between the outlet of the first nozzle and the tank, a first valve in the conduit, said first valve being in an open position at the start up of the system, a second valve in the water supply means and being in a closed position at the start up of the system, means connected to the first valve and the second valve for substantially simultaneously closing the first valve and opening up the second valve after the pump has been started up, whereby to permit automatically first expelling the fuel and water emulsion from the nozzle cavity by way of said conduit and supplying instead solely the liquid fuel to the nozzle cavity upon starting up the pump when starting up the burner and thereby facilitate ignition of the nozzle and thereafter allowing said emulsion to be supplied to the nozzle by substantially simultaneous closure of the first valve means and opening of the second valve means.
Claim 3
Dependent Claim
86 words
A system as defined in claim 1 in which the burner further comprises a second nozzle, said first nozzle affording a low rate of heating and said second nozzle affording, in combination with said first nozzle, a high rate of heating, said second nozzle having an emulsion inlet, and second means disposed between said emulsion inlet of the second nozzle and said pump for putting the inlet of the first nozzle and the inlet of the second nozzle in communication with the outlet of the pump.
Claim 4
Dependent Claim
36 words
A system as defined in claim 1, further comprising flow modulating means disposed between the outlet of said pump and the inlet of said first nozzle and modulating the flow of emulsion through the first nozzle.
Claim 5
Dependent Claim
81 words
A system as defined in claim 1, wherein said liquid fuel supply means has a second pump with an inlet connected to said tank and an outlet, means connecting the outlet of the second pump to the corresponding inlet of the emulsifying means, a forced-feed loop circuit connecting said outlet of said second pump to said tank, a fuel pressure regulator in said loop circuit, said discharge conduit being connected to said loop circuit between said pressure regulator and said tank.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |