US3686773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material cooler
Assignee: Fuller Co
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Filing: 1971-05-24
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Granted: 1972-08-29
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Expires: 1991-05-24
Abstract
Abstract A cooler for hot material such as cement clinker which includes a plurality of superimposed heat exchanger sections. Each of the sections includes an arrangement such as a series of alternately fixed and movable grates for moving material from the inlet of the section to the outlet of the section. A material breaker is positioned between the initial heat exchanger section and the second heat exchanger section. A material lock is provided between each section. The material is cooled by air flowing upwardly through the grate and material. Cooling air is introduced into a plenum chamber beneath the last section, flows upwardly through the material in that section and through the material in the succeeding sections and is eventually sent to the furnace as heated combustion air. Before passing through the initial section, water may be sprayed into the air to cool the same.
Inventors
- 👤 Paul Schreiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
F; F27; F27D; F27D15/00; F27D15/02; F27D15/0206; F27D15/0213; F27D3/00; F27D2003/0034; F27D2003/0071; F27D7/00; F27D7/02; F27D2007/026; F27D9/00; F27D2009/007; F27D2009/0081; F27D2009/0083; F27D2009/0086; F27D2015/024; F27D2015/0246; F27D2015/0253; F27D2015/026; F27D21/00; F27D21/0035; F27D2021/0042
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A cooler for hot material including a plurality of heat exchanger sections through which material to be cooled sequentially passes whereby cooling air which is heated by the hot material can be returned to a furnace as combustion air, the improvement comprising: a plurality of flow connected heat exchangers each including means for supporting the material to be cooled and advancing said material through the heat exchanger; means for supplying cooling air for sequential passage through the material in each heat exchanger whereby cooling air passes through the coolest material first and the hottest material last; material lock means between each heat exchanger; breaker means positioned between at least two heat exchangers; and means for introducing water into the cooling air before it passes through the hottest material.
Claim 2
Dependent Claim
128 words
A cooler for hot material including a plurality of heat exchanger sections through which material to be cooled sequentially passes whereby cooling air which is heated by the hot material can be returned to a furnace as combustion air, the improvement comprising: a plurality of flow connected heat exchangers each including means for supporting the material to be cooled and advancing said material through the heat exchanger; means for supplying cooling air for sequential passage through the material in each heat exchanger whereby cooling air passes through the coolest material first and the hottest material last; material lock means between each heat exchanger; breaker means positioned between at least two heat exchangers; and means for introducing water into the cooling air before it passes through the hottest material.
Claim 3
Dependent Claim
52 words
A cooler according to claim 1 wherein said heat exchangers are superimposed upon each other and each includes a lower chamber and an upper chamber separated by said means for supporting the material and the lower chamber of one heat exchanger is directly connected with the upper chamber of the following section.
Claim 4
Dependent Claim
29 words
The cooler according to claim 2 wherein there are at least three heat exchangers arranged above each other so that material flows through the cooler in a zig-zag pattern.
Claim 5
Dependent Claim
36 words
The cooler according to claim 1 wherein said means for introducing water includes means for spraying water into the cooling air just prior to the cooling air passing through the heat exchanger containing the hottest material.
Claim 6
Dependent Claim
42 words
The cooler according to claim 1 further comprising means for supplying additional cooling air directly to the heat exchanger which receives the hot material to be cooled at the point nearest the point hot material flows into the cooler from a furnace.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |