US3814174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stack type recuperator having a liquid seal
Assignee: ZURICH BRANCH OF MIDREX INTERNATIONAL BV A NETHERLANDS Corp
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Filing: 1970-04-16
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Granted: 1974-06-04
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Expires: 1990-04-16
Abstract
Abstract This invention relates to a metallic recuperator having a liquid seal. The liquid seal utilizes a thermal barrier and allows thermal expansion and contraction of the metallic heat exchange surface, while permitting free movement thereof.
Inventors
- 👤 D Beggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:53
CPC Classifications
F; F23; F23L; F23L15/00; F23L15/04; F23M; F23M20/00; Y; Y02; Y02E; Y02E20/00; Y02E20/34; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A metallic stack type recuperator, comprising: a generally vertical housing closed at its lower end and open at its upper end, a metallic sleeve received within said housing and defining a plenum therebetween, means for closing said plenum at the top thereof, wall means forming a vessel located at the bottom of said housing and receiving the bottom portion of said sleeve, a liquid contained within said vessel, a bottom portion of said sleeve being immersed in said liquid, means for supplying a first fluid at the upper portion of said plenum, means for removing said first fluid from the lower portion of said plenum, and means for supplying a second fluid to the interior of said sleeve.
Claim 2
Dependent Claim
118 words
A metallic stack type recuperator, comprising: a generally vertical housing closed at its lower end and open at its upper end, a metallic sleeve received within said housing and defining a plenum therebetween, means for closing said plenum at the top thereof, wall means forming a vessel located at the bottom of said housing and receiving the bottom portion of said sleeve, a liquid contained within said vessel, a bottom portion of said sleeve being immersed in said liquid, means for supplying a first fluid at the upper portion of said plenum, means for removing said first fluid from the lower portion of said plenum, and means for supplying a second fluid to the interior of said sleeve.
Claim 3
Dependent Claim
18 words
The metallic recuperator of claim 1, including means for regulating the level of said liquid in said vessel.
Claim 4
Dependent Claim
26 words
The metallic recuperator of claim 1, including wall means located above said liquid level to shield said liquid from exposure to the interior of said recuperator.
Claim 5
Dependent Claim
29 words
The metallic recuperator of claim 1 wherein the inside wall of said vessel extends for a distance parallel to said sleeve, thereby thermally shielding a portion of said sleeve.
Claim 6
Dependent Claim
184 words
A metallic stack type recuperator, comprising: a generally cylindrical housing closed at its lower end and having a refractory interior lining, a cylindrical metallic sleeve received within the upper portion of said housing and defining a plenum therebetween, means for closing said plenum at the top thereof, a cylindrical wall member seated at the bottom of said housing and extending within the bottom portion of said sleeve, a base ring located below said sleeve and extending from said wall member to said housing to define in cooperation with said wall member, said housing, and said sleeve a two sectioned vessel having the first section in communication with said plenum and the second section in communication with the interior of said sleeve and confluent with said first section, a liquid contained within said vessel, a bottom portion of said sleeve being immersed in said liquid, means for supplying a first fluid at the upper portion of said plenum, means for removing said first fluid from the lower portion of said plenum, and means for supplying a second fluid to the interior of said wall means.
Claim 7
Dependent Claim
184 words
A metallic stack type recuperator, comprising: a generally cylindrical housing closed at its lower end and having a refractory interior lining, a cylindrical metallic sleeve received within the upper portion of said housing and defining a plenum therebetween, means for closing said plenum at the top thereof, a cylindrical wall member seated at the bottom of said housing and extending within the bottom portion of said sleeve, a base ring located below said sleeve and extending from said wall member to said housing to define in cooperation with said wall member, said housing, and said sleeve a two sectioned vessel having the first section in communication with said plenum and the second section in communication with the interior of said sleeve and confluent with said first section, a liquid contained within said vessel, a bottom portion of said sleeve being immersed in said liquid, means for supplying a first fluid at the upper portion of said plenum, means for removing said first fluid from the lower portion of said plenum, and means for supplying a second fluid to the interior of said wall means.
Claim 8
Dependent Claim
18 words
The metallic recuperator of claim 1, including means for regulating the level of said liquid in said vessel.
Claim 9
Dependent Claim
26 words
The recuperator of claim 5 wherein the top of said cylindrical wall member is substantially in horizontal alignment with said means for removing said first fluid.
References Cited (Backward Citations)
US2332450A
Cited
US3346042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |