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US4465458A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for burning liquid fuel equipped with heating-type fuel vaporizer

Assignee: Panasonic Holdings Corp
•
Filing: 1982-06-11
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Granted: 1984-08-14
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Expires: 2002-06-11
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Abstract

Abstract A liquid fuel combustion apparatus for evaporating and vaporizing kerosene, gas oil or like liquid fuel by heating, admixing air with the vaporized fuel in a specified ratio and burning the resulting gaseous mixture in a combustion unit. The vaporizer for the liquid fuel comprises a liquid fuel drawing-up member (15) made of a heat-resistant porous body (8) or heat-resistant inorganic fiber fabric (9) for drawing up the liquid fuel, and a heat generating member (6) including coating layers (22, 23) of heat-resistant metal, heat-resistant alloy or heat-resistant metallic oxide for giving heat to the drawing-up member. To prevent formation of tar-like substances, a catalyst is preferably deposited on the surface of the drawing-up member and/or on the surface of the heat generating member. Further preferably, the outer periphery of the heat generating member (6) is in contact with the drawing-up member (5). The apparatus assures stable combustion over a prolonged period of time and is useful as a heater, kitchen range or the like.

Inventors

  • 👤 Atsushi Nishino
  • 👤 Kazunori Sonetaka
  • 👤 Yasuhiro Takeuchi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 21:15
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/44; F23D11/441; F23D11/448

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 142 words
An apparatus equipped with a heating-type fuel vaporizer for burning a liquid fuel and comprising: a member immersed in the liquid fuel for drawing up the fuel in a liquid state, the drawing-up member being capable of drawing up the liquid fuel at a speed of at least 10 mm/30 seconds, means for supplying the liquid fuel to the drawing-up member, a heat generating member embedded in the drawing-up member in contact therewith for giving heat to the liquid fuel drawn up by the drawing-up member, said heat generating member being coated over the outer surface thereof with at least one layer made from at least one member selected from the group consisting of heat-resistant metal, heat-resistant alloy and heat-resistant metallic oxide; and a combustion unit for burning the fuel evaporated and vaporized by the heat emitted by the heat generating member.
Claim 2
Independent Claim 142 words
An apparatus equipped with a heating-type fuel vaporizer for burning a liquid fuel and comprising: a member immersed in the liquid fuel for drawing up the fuel in a liquid state, the drawing-up member being capable of drawing up the liquid fuel at a speed of at least 10 mm/30 seconds, means for supplying the liquid fuel to the drawing-up member, a heat generating member embedded in the drawing-up member in contact therewith for giving heat to the liquid fuel drawn up by the drawing-up member, said heat generating member being coated over the outer surface thereof with at least one layer made from at least one member selected from the group consisting of heat-resistant metal, heat-resistant alloy and heat-resistant metallic oxide; and a combustion unit for burning the fuel evaporated and vaporized by the heat emitted by the heat generating member.
Claim 3
Dependent Claim 118 words
An apparatus as defined in claim 1 wherein the heat-resistant metallic oxide is at least one compound selected from the group consisting of metallic oxides including Al 2 O 3 , SiO 2 , Fe 2 O 3 , Y 2 O 3 , TiO 2 , CaO, B 2 O 3 , Li 2 O, Cr 2 O 3 , ZrO 2 , MgO, BeO, NiO, ThO 2 , HfO 2 , La 2 O 3 and CeO 2 and double metallic oxides having a spinel structure and including MgAl 2 O 4 , MnAl 2 O 4 , FeAl 2 O 4 , CoAl 2 O 4 , ZnAl 2 O 4 and MgCrO 4 .
Claim 4
Dependent Claim 30 words
An apparatus as defined in claim 1 wherein the heat-resistant metal is at least one member selected from the group consisting of Al, Zn, Sn, Cr, Cu, Fe and Ni.
Claim 5
Dependent Claim 29 words
An apparatus as defined in claim 1 wherein the heat-resistant alloy is at least one member selected from the group consisting of Ni--Cr--Al, Ni--Cr, Fe--Cr, Fe--Cr--Al, Fe--Ni--Cr--Al and Fe--Ni--Cr.
Claim 6
Dependent Claim 20 words
An apparatus as defined in claim 1 wherein the coating layer has a catalyst deposited on the outer surface thereof.
Claim 7
Dependent Claim 37 words
An apparatus as defined in claim 5 wherein the catalyst is at least one member selected from the group consisting of metallic oxide catalysts, double oxide catalysts, noble metal catalysts, solid acid catalysts and solid base catalysts.

References Cited (Backward Citations)

US2507464A Cited
JPS54124340A Cited
US4365952A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-08-14 1988-02-13 1988-08-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-08-14 1992-02-13 1992-08-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-08-14 1996-02-13 1996-08-14 $7700.00 Window Closed / Lapsed

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