US4377116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace for burning husk
Assignee: Satake Engineering Co Ltd
•
Filing: 1981-08-24
•
Granted: 1983-03-22
•
Expires: 2001-08-24
Abstract
Abstract A husk burning furnace having a husk smoke-burning chamber formed by an inner peripheral perforated wall defining a pot-shaped primary gas burning chamber and an outer peripheral perforated wall surrounding the inner peripheral perforated wall. Means are provided to feed the husk particles into the smoke-burning chamber from the lower side of the latter in a floating manner where they are smoke-burnt to become smoke-carbonized husk particles, while generating unburnt gas. The smoke-carbonized husk particles are taken out of the furnace while the unburnt gas is introduced into the primary gas burning chamber so as to be burnt in the primary gas burning chamber. The gas together with flame is introduced further into a secondary gas burning chamber connected to the upper end of the inner peripheral perforated wall to generate colorless hot gas containing no substantial quantities of dust particles. Meanwhile, the smoke-carbonized husk particles are suitably discharged to the desired place.
Inventors
- 👤 Toshihiko Satake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:51
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A husk burning furnace characterized by comprising, in combination, an inner peripheral perforated wall defining a pot-like cylindrical primary gas burning chamber provided at its upper end with an opening constituting a hot gas outlet, an outer peripheral perforated wall surrounding said inner peripheral perforated wall and defining therebetween a conically annular husk smoke-burning chamber provided with a husk supply port opening at a lower part thereof, a husk supplying device connected to said husk supply port and adapted to forcibly move husk particles upwardly to feed and supply the latter, a secondary gas burning chamber connected to the upper end of said hot gas outlet, a hot gas discharge port communicated with said secondary gas burning chamber, a smoked-carbon discharge port adapted to upwardly discharge the husk particles smoke-carbonized in said smoke-burning chamber, and an outer cylindrical wall accommodating the above-mentioned constituents.
Claim 2
Dependent Claim
143 words
A husk burning furnace characterized by comprising, in combination, an inner peripheral perforated wall defining a pot-like cylindrical primary gas burning chamber provided at its upper end with an opening constituting a hot gas outlet, an outer peripheral perforated wall surrounding said inner peripheral perforated wall and defining therebetween a conically annular husk smoke-burning chamber provided with a husk supply port opening at a lower part thereof, a husk supplying device connected to said husk supply port and adapted to forcibly move husk particles upwardly to feed and supply the latter, a secondary gas burning chamber connected to the upper end of said hot gas outlet, a hot gas discharge port communicated with said secondary gas burning chamber, a smoked-carbon discharge port adapted to upwardly discharge the husk particles smoke-carbonized in said smoke-burning chamber, and an outer cylindrical wall accommodating the above-mentioned constituents.
Claim 3
Dependent Claim
90 words
A husk burning chamber as claimed in claim 1, characterized by further comprising a floor wall interconnecting the upper part of said outer peripheral perforated wall to the inner peripheral surface of said outer cylindrical wall, a multiplicity of slots arranged circumferentially and extending obliquely upwardly through said floor wall and a blower communicating with said slots through an air passage provided at the lower side of said floor wall, wherein the smoked-carbon discharge port opens in said outer cylindrical wall contacted at its inner side by the floor wall.
Claim 4
Dependent Claim
41 words
A husk burning furnace as claimed in claim 1, wherein the top panel of said smoke-burning chamber is constituted by a partition wall connected between the brim of said hot gas outlet and the inner surface of said outer cylindrical wall.
Claim 5
Dependent Claim
100 words
A husk burning chamber as claimed in claim 1, wherein the lower portion of said smoke-burning chamber is shaped into a funnel-like shape along the lower portion of said pot-shaped primary gas burning chamber, characterized by further comprising a sleeve connected to a husk supply port formed at the lower end of said smoke-burning chamber so as to extend downwardly from said husk supply port, a spiral feed screw with a vertical shaft and mounted in said sleeve, and a diffusion blade having a greater diameter than said spiral feed screw and attached to the upper end of the latter.
Claim 6
Dependent Claim
35 words
A husk burning furnace as claimed in claim 1, wherein the lower part of said outer peripheral perforated wall defining said smoke-burning chamber and not confronting said primary gas burning chamber is devoid of perforations.
Claim 7
Dependent Claim
61 words
A husk burning furnace as claimed in claim 1, characterized by further comprising an air introduction port with a regulating valve, said air introduction port opening to a hot gas passage between said secondary gas burning chamber and said hot gas discharge port, thereby to permit the adjustment of temperature of the hot gas coming from said secondary gas burning chamber.
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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |