Patent US3796536A successfully refreshed from Google Patents.
US3796536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel burner
Assignee: Panasonic Holdings Corp
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Filing: 1972-04-24
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Granted: 1974-03-12
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Expires: 1992-04-24
Abstract
Abstract A liquid fuel burner is provided which has a fuel atomizing surface or portion formed at the free end of an exponential horn whose base is securely fixed to a vibrator coupled to an ultrasonic wave generator and which is so mounted that its vibrations may not be transmitted to an outer duct or housing enclosing the horn. An inner mixing vane assembly is disposed coaxially and outwardly of the fuel atomizing surface of the horn in spaced apart relation therewith, and an outer mixing vane assembly is also disposed coaxially and outwardly of the inner mixing vane assembly. At the discharge end of the outer duct or housing is formed an end member comprising a diverging wall portion, an arcuate wall portion and a radially inwardly extending flange portion in order to control the flow of atomized fuel particles.
Inventors
- 👤 M Hori
- 👤 N Rokudo
- 👤 T Ishiguro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:13
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/34; F23D11/345; Y; Y10; Y10S; Y10S239/00; Y10S239/19
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
161 words
A liquid fuel burner comprising an ultrasonic wave generator, a horn whose one end is fixed to a vibrator coupled to said ultrasonic wave generator and the other end is provided with a liquid fuel atomizing surface, an outer duct enclosing said vibrator and said horn coaxially thereof, means for supporting said horn within said outer duct, means for supplying fuel oil to said atomizing surface of said horn, an inner duct positioned between said outer duct and horn, an outer mixing vane assembly disposed between the outer and inner ducts, an inner mixing vane assembly disposed between said horn and said inner duct and spaced therefrom, whereby the air flows axially and in parallel through the space between the peripheral surface of said horn and said mixing vane assembly, and means for reducing the whirling velocities of said atomized fuel particules whirled by said mixing vane assemblies, said velocity reducing means being mounted to the end of said outer duct.
Claim 2
Dependent Claim
161 words
A liquid fuel burner comprising an ultrasonic wave generator, a horn whose one end is fixed to a vibrator coupled to said ultrasonic wave generator and the other end is provided with a liquid fuel atomizing surface, an outer duct enclosing said vibrator and said horn coaxially thereof, means for supporting said horn within said outer duct, means for supplying fuel oil to said atomizing surface of said horn, an inner duct positioned between said outer duct and horn, an outer mixing vane assembly disposed between the outer and inner ducts, an inner mixing vane assembly disposed between said horn and said inner duct and spaced therefrom, whereby the air flows axially and in parallel through the space between the peripheral surface of said horn and said mixing vane assembly, and means for reducing the whirling velocities of said atomized fuel particules whirled by said mixing vane assemblies, said velocity reducing means being mounted to the end of said outer duct.
Claim 3
Dependent Claim
36 words
A liquid fuel burner as set forth in claim 1 wherein said outer and inner mixing vane assemblies each have a plurality of equiangularly disposed helical vanes for whirling the flow of said atomized fuel particles.
Claim 4
Dependent Claim
27 words
A liquid fuel burner as set forth in claim 1 wherein said horn is supported and held in position at the nodal position by said supporting means.
Claim 5
Dependent Claim
28 words
A liquid fuel burner as set forth in claim 1 wherein said atomizing surface of said horn is made of material whose adhesivity to fuel oils is low.
Claim 6
Dependent Claim
29 words
A liquid fuel burner as set forth in claim 1 wherein said atomizing surface of said horn is coated with a material with a low adhesivity to fuel oils.
Claim 7
Dependent Claim
34 words
A liquid fuel burner as set forth in claim 3 wherein said supporting means include vibration isolators so that the transmission of vibrations from one of said supporting means to another may be reduced.
Claim 8
Dependent Claim
48 words
A liquid fuel burner as set forth in claim 3 wherein said supporting means comprise a plurality of blind holes formed at the nodal position and a plurality of supports whose leading ends are pointed to make substantially point contact with said horn in said blind holes thereof.
Claim 9
Dependent Claim
19 words
A liquid fuel burner as set forth in claim 4 wherein said material of said atomizing surface is aluminum.
Claim 10
Dependent Claim
20 words
A liquid fuel burner as set forth in claim 5 wherein said material for coating said atomizing surface is aluminum.
Claim 11
Dependent Claim
79 words
A liquid fuel burner as set forth in claim 1, further comprising an end member fixed to the discharge end of said cylindrical outer duct, said end member comprising a diverging wall portion adjacent said discharge end, an intermediate arcuate wall portion, and a radially, inwardly extending flange portion to reduce the vortex of air flows whirled by said mixing vane assemblies, to enhance the axial flow, and to provide a mixing space for mixing atomized fuel and air.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |