US3830293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube and shell heat exchangers
Assignee: Individual
•
Filing: 1969-08-08
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Granted: 1974-08-20
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Expires: 1989-08-08
Abstract
Abstract This invention relates to tube and shell heat exchangers in which a vapour gives up it''s latent heat and in so doing condenses in the tubes while a fluid passing through the shell over the tubes is heated. Flow restricting devices are arranged in the flow path for the vapour to the tubes and the number and effectiveness of these devices is arranged so that there is about the same amount of excess vapour flowing out of the outlet of each tube irrespective of how much vapour has been condensed in that tube, the excess vapour from the tubes being recirculated.
Inventors
- 👤 A Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:00
CPC Classifications
F; F28; F28B; F28B1/00; F28B9/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
A condenser comprising: a shell; a cooling fluid inlet for allowing cooling fluid to flow into said shell; a cooling fluid outlet for allowing said cooling fluid to flow out of said shell; an inlet manifold positioned within said shell for receiving vapor; an outlet manifold positioned within said shell; a plurality of tubes connecting said inlet manifold with said outlet manifold for directing vapor from said inlet manifold to said outlet manifold, so that said vapor is cooled by indirect heat exchange with said cooling fluid and said vapor is partly condensed to liquid which flows to said outlet manifold; and a number of flow restricters in said inlet manifold spaced to control the flow of vapor into said tubes so that the closer a tube is to the fluid inlet in the flow path of said cooling fluid the more vapor enters it and the more heat from said vapor will be absorbed each of said tubes receiving enough vapor to insure that vapor exits from each tube and enters said outlet manifold.
Claim 2
Dependent Claim
175 words
A condenser comprising: a shell; a cooling fluid inlet for allowing cooling fluid to flow into said shell; a cooling fluid outlet for allowing said cooling fluid to flow out of said shell; an inlet manifold positioned within said shell for receiving vapor; an outlet manifold positioned within said shell; a plurality of tubes connecting said inlet manifold with said outlet manifold for directing vapor from said inlet manifold to said outlet manifold, so that said vapor is cooled by indirect heat exchange with said cooling fluid and said vapor is partly condensed to liquid which flows to said outlet manifold; and a number of flow restricters in said inlet manifold spaced to control the flow of vapor into said tubes so that the closer a tube is to the fluid inlet in the flow path of said cooling fluid the more vapor enters it and the more heat from said vapor will be absorbed each of said tubes receiving enough vapor to insure that vapor exits from each tube and enters said outlet manifold.
Claim 3
Dependent Claim
65 words
The condenser defined in claim 1 further comprising a conduit connecting said outlet manifold with said inlet manifold so that vapor which has flowed from said tubes into said outlet manifold is recirculated to said inlet manifold, and means to remove a portion of said recirculating vapor from said conduit to limit the amount of uncondensable gases flowing through said conduit into said inlet manifold.
Claim 4
Dependent Claim
17 words
The condenser defined in claim 2 further comprising a pump in said conduit to induce said recirculation.
Claim 5
Dependent Claim
30 words
The condenser defined in claim 3 wherein said pump is connected with a vapor feed line to mix new vapor with said recirculated vapor for injection into said inlet manifold.
Claim 6
Dependent Claim
23 words
The condenser defined in claim 4, wherein said means to remove a portion of said recirculating vapor is positioned upstream of said pump.
Claim 7
Dependent Claim
60 words
The condenser as defined in claim 1, in which said inlet and outlet manifolds are substantially upright with said tubes extending substantially horizontally, said flow restrictors being nozzles positioned along the length of said inlet manifold to progressively restrict the flow of vapor upwardly through said inlet manifold to thereby control the amount of said vapor supplied to said tubes.
Claim 8
Dependent Claim
73 words
A condenser as defined in claim 1 wherein said flow restrictors comprise partitions which extend into said inlet manifold parallel to the direction of flow of said vapor and partitions connected with the ends of said first defined partitions and extending at an angle thereto with said last defined partitions being provided with orifices of predetermined definite sizes to regulate the flow of vapor between said first defined partitions and into said tubes.
Claim 9
Dependent Claim
30 words
The condensers defined in claim 7 wherein said tubes are U-shaped so that said inlet manifold and outlet manifold are positioned on the same side of said plurality of tubes.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |