US3870462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace for direct non-oxidizing heating of material under thermal treatment
Assignee: Individual
•
Filing: 1973-11-20
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Granted: 1975-03-11
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Expires: 1993-11-20
Abstract
Abstract The present invention relates to the equipment designed for heating metal blanks prior to their hot pressure shaping with a resultant reduction of metal resistance to deformation. The furnace according to the invention is adapted for incomplete burning of fuel with an excess air ratio of 0.3 - 0.5, whereas air to be directed to burning is heated in a recuperator. Burners are evenly located along the elongated working chamber and located across this chamber. The wall of the working chamber located opposite to the burners has gas outflow openings and this wall also serves as a wall of a gas-escape channel located parallel to the working chamber and being in height equal to that of the working chamber.
Inventors
- 👤 Nikolai Nikolaevich Semenov
- 👤 Lev Abramovich Gussak
- 👤 Vasily Konstantinovich Bobolev
- 👤 Evgeny Pavlovich Unxov
- 👤 Anatoly Alexandrovich Astafiev
- 👤 Mikhail Semenovich Khazanov
- 👤 Vitaly Iosifovich Moroz
- 👤 Mark Alexandrovich Severov
- 👤 Roman Stepanovich Kuleshov
- 👤 Vladimir Konstantinov Levitsky
- 👤 Dmitry Petrovich Yakushev
- 👤 Gennady Demyanovich Rudkov
- 👤 Ivan Petrovich Zubov
- 👤 Viktor Vasilievich Afanasiev
- 👤 Vladimir Vasilievich Yakovlev
- 👤 Leonid Sememovich Baranovsky
- 👤 Margarita Borisovna Koroleva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:23
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/30; F27B9/36; F27B2009/3646; F27B9/22; F27M; F27M2001/00; F27M2001/15; F27M2001/1539
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
182 words
A furnace for directing non-oxidized heating of material under thermal treatment, comprising an elongated working chamber formed by elongated opposed side walls and relatively short end walls, a hearth, a crown above the hearth, and having an opening for charging said material under thermal treatment onto said hearth and an opening for discharging said material from said hearth; means for primary burning of fuel spaced along one of said side walls and directly across said elongated working chamber toward the other opposed side wall; gas outflow openings in the other opposed side wall in substantially opposed relation to the means for primary burning of fuel; a gas-escape channel located behind and parallel to said other opposed side wall of the elongated work chamber and communicating with the gas outflow openings, said gas outflow openings being of a height substantially equal to the height of said chamber; a second chamber communicating with said gas-escape channel for secondary burning of combustion products received from the gas outflow opening through the gas-escape channel; and means for secondary burning of combustion products in the second chamber.
Claim 2
Dependent Claim
182 words
A furnace for directing non-oxidized heating of material under thermal treatment, comprising an elongated working chamber formed by elongated opposed side walls and relatively short end walls, a hearth, a crown above the hearth, and having an opening for charging said material under thermal treatment onto said hearth and an opening for discharging said material from said hearth; means for primary burning of fuel spaced along one of said side walls and directly across said elongated working chamber toward the other opposed side wall; gas outflow openings in the other opposed side wall in substantially opposed relation to the means for primary burning of fuel; a gas-escape channel located behind and parallel to said other opposed side wall of the elongated work chamber and communicating with the gas outflow openings, said gas outflow openings being of a height substantially equal to the height of said chamber; a second chamber communicating with said gas-escape channel for secondary burning of combustion products received from the gas outflow opening through the gas-escape channel; and means for secondary burning of combustion products in the second chamber.
Claim 3
Dependent Claim
182 words
A furnace for directing non-oxidized heating of material under thermal treatment, comprising an elongated working chamber formed by elongated opposed side walls and relatively short end walls, a hearth, a crown above the hearth, and having an opening for charging said material under thermal treatment onto said hearth and an opening for discharging said material from said hearth; means for primary burning of fuel spaced along one of said side walls and directly across said elongated working chamber toward the other opposed side wall; gas outflow openings in the other opposed side wall in substantially opposed relation to the means for primary burning of fuel; a gas-escape channel located behind and parallel to said other opposed side wall of the elongated work chamber and communicating with the gas outflow openings, said gas outflow openings being of a height substantially equal to the height of said chamber; a second chamber communicating with said gas-escape channel for secondary burning of combustion products received from the gas outflow opening through the gas-escape channel; and means for secondary burning of combustion products in the second chamber.
Claim 4
Dependent Claim
182 words
A furnace for directing non-oxidized heating of material under thermal treatment, comprising an elongated working chamber formed by elongated opposed side walls and relatively short end walls, a hearth, a crown above the hearth, and having an opening for charging said material under thermal treatment onto said hearth and an opening for discharging said material from said hearth; means for primary burning of fuel spaced along one of said side walls and directly across said elongated working chamber toward the other opposed side wall; gas outflow openings in the other opposed side wall in substantially opposed relation to the means for primary burning of fuel; a gas-escape channel located behind and parallel to said other opposed side wall of the elongated work chamber and communicating with the gas outflow openings, said gas outflow openings being of a height substantially equal to the height of said chamber; a second chamber communicating with said gas-escape channel for secondary burning of combustion products received from the gas outflow opening through the gas-escape channel; and means for secondary burning of combustion products in the second chamber.
Claim 5
Dependent Claim
24 words
A furnace as of Claim 1, in which said gas outflow openings are in direct alignment with said means for primary burning of fuel.
Claim 6
Dependent Claim
43 words
A furnace as of claim 1, in which said hearth and crown of said elongated working chamber, are located at a distance from each other not exceeding the cross-sectional dimension of a torch flame produced by said means for initial burning of fuel.
Claim 7
Dependent Claim
31 words
A furnace as of claim 3, in which said crown of said elongated working chamber is located at an angle of 10* - 15* relative to said hearth of this chamber.
Claim 8
Dependent Claim
35 words
A furnace as of claim 4, in which said means for primary burning of fuel is inclined to said hearth of said elongated working chamber at the same angle as said crown of this chamber.
Claim 9
Dependent Claim
24 words
A furnace as of claim 1, in which said second chamber for secondary burning of combustion products is located beyond said elongated working chamber.
Claim 10
Dependent Claim
32 words
A furnace as of claim 6, comprising a recuperator installed above said second chamber for secondary burning and is adapted for heating air directed to said means for initial burning of fuel.
References Cited (Backward Citations)
US2603470A
Cited
US3787171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |