US3909188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burner for liquid and gaseous fuels
Assignee: Individual
•
Filing: 1974-02-12
•
Granted: 1975-09-30
•
Expires: 1994-02-12
Abstract
Abstract A fuel burner system comprises an air-atomizing fuel nozzle, an air compressor, liquid and gaseous fuel sources and a valve in the delivery line from the liquid and gaseous fuel reservoirs to the nozzle to select the type of fuel (i.e. liquid or gaseous) delivered to the nozzle in accordance with one aspect of the disclosure. The liquid fuel source may be a reservoir which is pressurized by the air compressor to deliver the fuel to the air atomizing nozzle. In addition, the vacuum side of the air compressor may be periodically connected to the fuel reservoir through suitable valving to provide an automatic reservoir refilling capability. The air compressor then acts not only to supply atomization (primary) air, but also to deliver liquid fuel to the nozzle during the liquid fuel burning cycle, and to draw liquid fuel from a remote liquid fuel supply source during the liquid fuel reservoir refilling cycle. A flame spreader is employed in combination with the air-atomizing nozzle according to another aspect of the disclosure to stabilize and shape the flame. The position and diameter of the flame spreader are set to provide optimum fuel burning characteristics.
Inventors
- 👤 Wallace W Velie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:21
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/40; F23D11/10; F23D17/00; F23D17/002; F23K; F23K5/00; F23D2207/00; F23D2900/00; F23D2900/11401
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
87 words
An air-atomizing fuel burner system comprising air-atomizing nozzle means for using primary gas under pressure to disperse fuel, means for delivering liquid fuel to said air-atomizing nozzle means, means for delivering gaseous fuel to said airatomizing nozzle means, means for selecting the type of fuel delivered to said air-atomizing nozzle means, and means for delivering primary gas under pressure to said air-atomizing nozzle means to disperse said fuel so that the dispersed fuel can be ignited in the presence of secondary air to produce a combustion flame.
Claim 2
Dependent Claim
87 words
An air-atomizing fuel burner system comprising air-atomizing nozzle means for using primary gas under pressure to disperse fuel, means for delivering liquid fuel to said air-atomizing nozzle means, means for delivering gaseous fuel to said airatomizing nozzle means, means for selecting the type of fuel delivered to said air-atomizing nozzle means, and means for delivering primary gas under pressure to said air-atomizing nozzle means to disperse said fuel so that the dispersed fuel can be ignited in the presence of secondary air to produce a combustion flame.
Claim 3
Dependent Claim
25 words
The air-atomizing fuel burner system of claim 1 in which said primary gas is air and said primary gas delivery means includes air compressor means.
Claim 4
Dependent Claim
54 words
The air-atomizing fuel burner of claim 2 and further comprising fuel reservoir means for storing liquid fuel, means for delivering liquid fuel from said liquid fuel reservoir means to said air-atomizing nozzle means, means for delivering a portion of said air under pressure from said air compressor means to said liquid fuel reservoir means.
Claim 5
Dependent Claim
51 words
The air-atomizing fuel burner system of claim 3 in which said means for delivering a portion of the air under pressure from said air compressor means to said liquid fuel reservoir means includes air flow restriction or regulation means for controlling the pressure of air to said liquid fuel reservoir means.
Claim 6
Dependent Claim
44 words
The air-atomizing fuel burner system of claim 3 in which said means for delivering liquid fuel to said air-atomizing nozzle means from said liquid fuel reservoir means includes a fuel flow restriction means for metering the flow of liquid fuel to said air-atomizing means.
Claim 7
Dependent Claim
65 words
The air-atomizing fuel burner system of claim 3 and further comprising means for supplying liquid fuel to said fuel reservoir means from a remote fuel supply source, and means for connecting the vacuum side of said air compressor means to ambient during the liquid fuel burning cycle of said air-atomizing nozzle means and to said liquid fuel reservoir during the liquid fuel reservoir refilling cycle.
Claim 8
Dependent Claim
42 words
The air-atomizing fuel burner system of claim 6 in which said means for connecting the vacuum side of said air compressor means to said liquid fuel reservoir means includes means for restricting the flow of air from said liquid fuel reservoir means.
Claim 9
Dependent Claim
49 words
The air-atomizing fuel burner system of claim 6 in which said means for connecting the vacuum side of said air compressor means to said liquid fuel reservoir means includes means responsive to the fuel level in said liquid fuel reservoir and a valve pilot operated by said responsive means.
Claim 10
Dependent Claim
39 words
The air-atomizing fuel burner sYstem of claim 2 in which said means for supplying air under pressure to said air-atomizing nozzle means from said air-compressor means includes means for regulating the air pressure supplied to said air-atomizing nozzle means.
Claim 11
Dependent Claim
27 words
The air-atomizing fuel burner system of claim 2 and further comprising flame spreader means located downstream of said air-atomizing nozzle means for stabilizing and shaping said flame.
Claim 12
Dependent Claim
29 words
The air-atomizing fuel burner system of claim 10 in which the ratio of flame spreader diameter to separation distance between said flame spreader and air-atomizing nozzle is about 1.
Claim 13
Dependent Claim
27 words
The air-atomizing fuel burner system of claim 10 in which said flame spreader is located in the gaseous or hydroxyl type combustion zone in said combustion flame.
Claim 14
Dependent Claim
28 words
The air-atomizing fuel burner system of claim 10 in which the location of said flame spreader relative to said air-atomizing nozzle is based on the fuel burning rate.
Claim 15
Dependent Claim
27 words
The air-atomizing fuel burner system of claim 13 in which said flame spreader is moved further downstream from said air-atomizing nozzle as the fuel burning rate increases.
Claim 16
Dependent Claim
26 words
The air-atomizing fuel burner system of claim 10 in which said flame spreader is between about 1.5 and 5 inches downstream from said air-atomizing nozzle means.
Claim 17
Dependent Claim
35 words
The air-atomizing fuel burner system of claim 2 in which said means for delivering gaseous fuel to said air-atomizing nozzle means includes means for regulating the flow of gaseous fuel to said air-atomizing nozzle means.
Claim 18
Dependent Claim
30 words
The air-atomizing fuel burner system of claim 16 in which said means for regulating the flow of gaseous fuel to said air-atomizing nozzle means is a gaseous fuel pressure regulator.
Claim 19
Dependent Claim
28 words
The air-atomizing fuel burner system of claim 2 in which said means for controlling the type of fuel delivered to said air-atomizing nozzle means comprises a three-way valve.
Claim 20
Dependent Claim
37 words
The air-atomizing fuel burner system of claim 2 in which said air-atomizing nozzle means comprises an air aperture having an edge with a thickness approximately equal to or less than the hydraulic diameter of said air aperture.
Claim 21
Dependent Claim
19 words
The air-atomizing fuel burner system of claim 18 in which said hydraulic diameter is about 10 to 30 mils.
Claim 22
Dependent Claim
29 words
The air-atomizing fuel burner system of claim 1 and further comprising means for igniting the dispersed fuel in the presence of said secondary air to produce said combustion flame.
Claim 23
Dependent Claim
96 words
An air-atomizing fuel burner system comprising air-atomizing nozzle means for using primary gas under pressure to disperse fuel, means for delivering fuel to said air-atomizing nozzle means, means for delivering primary gas under pressure to said air-atomizing nozzle means to disperse said fuel so that the dispersed fuel can be ignited in the presence of secondary air to produce a combustion flame, and flame spreader means located downstream of said air-atomizing nozzle means for stabilizing and shaping said flame, said flame spreader means being located in the gaseous or hydroxyl-type combustion zone of said combustion flame.
Claim 24
Dependent Claim
96 words
An air-atomizing fuel burner system comprising air-atomizing nozzle means for using primary gas under pressure to disperse fuel, means for delivering fuel to said air-atomizing nozzle means, means for delivering primary gas under pressure to said air-atomizing nozzle means to disperse said fuel so that the dispersed fuel can be ignited in the presence of secondary air to produce a combustion flame, and flame spreader means located downstream of said air-atomizing nozzle means for stabilizing and shaping said flame, said flame spreader means being located in the gaseous or hydroxyl-type combustion zone of said combustion flame.
Claim 25
Dependent Claim
30 words
The air-atomizing fuel burner system of claim 22 in which the ratio of flame spreader diameter to separation distance between said flame spreader and air-atomizing nozzle means is about 1.
Claim 26
Dependent Claim
25 words
The air-atomizing fuel burner system of claim 22 in which said flame spreader is between about 1.5 and 5 inches downstream from said air-atomizing nozzle.
Claim 27
Dependent Claim
97 words
A low pressure air-atomizing fuel burner system comprising air-atomizing nozzle means for using primary air to atomize fuel, means for delivering fuel under low pressure to said air-atomizing nozzle means, means for delivering primary air to said air-atomizing nozzle means to disperse said fuel so that the dispersed fuel can be ignited in the presence of secondary air to produce a combustion flame, and flame spreader means located downstream of said air-atomizing nozzle means for stabilizing and shaping said flame, said flame spreader means being located in The gaseous or hydroxyl-type combustion zone of said combustion flame.
Claim 28
Dependent Claim
97 words
A low pressure air-atomizing fuel burner system comprising air-atomizing nozzle means for using primary air to atomize fuel, means for delivering fuel under low pressure to said air-atomizing nozzle means, means for delivering primary air to said air-atomizing nozzle means to disperse said fuel so that the dispersed fuel can be ignited in the presence of secondary air to produce a combustion flame, and flame spreader means located downstream of said air-atomizing nozzle means for stabilizing and shaping said flame, said flame spreader means being located in The gaseous or hydroxyl-type combustion zone of said combustion flame.
Claim 29
Dependent Claim
33 words
The air-atomizing fuel burner system of claim 25 in which said primary air and said fuel are each delivered to said air-atomizing nozzle means at a pressure of about 1 to 15 psi.
Claim 30
Dependent Claim
29 words
The air atomizing fuel burner system of claim 25 in which said fuel is delivered to said air-atomizing nozzle means at a pressure of about 1 to 4 psi.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |