Patent JPS6410433A successfully refreshed from Google Patents.
Patent US3817323A successfully refreshed from Google Patents.
US3817323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage condensers
Assignee: Hitachi Ltd
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Filing: 1973-03-07
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Granted: 1974-06-18
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Expires: 1993-03-07
Abstract
Abstract An improvement for sealing a small space between each cooling tube and a tube hole for receiving and supporting the cooling tube formed through a partition wall which divides a shell into a plurality of stages or chambers, in which straight cooling tubes are inclined from a high-pressure chamber to a low-pressure chamber and received and supported in the tube holes with square edges and the condensate flowing along the inclined cooling tube fills the small space between the cooling tube and the tube hole thereby effecting the seal between the high-and low-pressure chambers.
Inventors
- 👤 K Ebara
- 👤 S Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:58
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/02; F28B9/00; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/205; Y10S165/216
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
189 words
A multistage condenser of the type in which a shell is divided into a plurality of chambers with a different degree of vacuum by partition walls, a large number of cooling tubes which are communicated with a cooling liquid inlet and outlet are extended through said plurality of chambers and said partition walls, and steam or vapor to be condensed flows to contact with said large number of cooling tubes to effect the heat transfer between said steam or vapor and the cooling liquid flowing through said large number of cooling tubes so that said steam or vapor may be condensed, CHARACTERIZED IN THAT said large number of cooling tubes are inclined from the highpressure steam or vapor chambers toward the low-pressure steam or vapor chambers, and a small space is formed between each of said large number of cooling tubes and a tube hole which is formed through said partition wall for receiving and supporting said cooling tube therein, whereby the condensate flowing along the surface of said cooling tube may fills said small space thereby effecting the seal between said high- and low-pressure steam or vapor chambers.
Claim 2
Dependent Claim
189 words
A multistage condenser of the type in which a shell is divided into a plurality of chambers with a different degree of vacuum by partition walls, a large number of cooling tubes which are communicated with a cooling liquid inlet and outlet are extended through said plurality of chambers and said partition walls, and steam or vapor to be condensed flows to contact with said large number of cooling tubes to effect the heat transfer between said steam or vapor and the cooling liquid flowing through said large number of cooling tubes so that said steam or vapor may be condensed, CHARACTERIZED IN THAT said large number of cooling tubes are inclined from the highpressure steam or vapor chambers toward the low-pressure steam or vapor chambers, and a small space is formed between each of said large number of cooling tubes and a tube hole which is formed through said partition wall for receiving and supporting said cooling tube therein, whereby the condensate flowing along the surface of said cooling tube may fills said small space thereby effecting the seal between said high- and low-pressure steam or vapor chambers.
Claim 3
Dependent Claim
25 words
A multistage condenser as defined in claim 1 wherein said tube holes on the side of said high-pressure steam or vapor chamber have square edges.
Claim 4
Dependent Claim
20 words
A multistage condenser as defined in claim 1 wherein an annular groove is formed in each of said tube holes.
Claim 5
Dependent Claim
203 words
A multistage condenser of the type in which a shell is divided into a plurality of chambers with a different degree of vacuum by partition walls, a large number of cooling tubes which are communicated with a cooling liquid inlet and outlet are extended through said plurality of chambers and said partition walls, and steam or vapor to be condensed flows to contact with said large number of cooling tubes to effect the heat transfer between said steam or vapor and the cooling liquid flowing through said large number of cooling tubes so that said steam or vapor may be condensed, CHARACTERIZED IN THAT said large number of cooling tubes are straightly inclined from the high-pressure steam or vapor chambers toward the low-pressure steam or vapor chambers, each of tube holes formed through the partition wall for receiving and supporting the cooling tube therein is substantially at a right angle with respect to said partition wall, and a small space is formed between each of said large number of cooling tubes and each of said tube holes, whereby the condensate flowing along the inclined cooling tube may fills said small space thereby effecting the seal between said high-and low-pressure steam or vapor chambers.
Claim 6
Dependent Claim
203 words
A multistage condenser of the type in which a shell is divided into a plurality of chambers with a different degree of vacuum by partition walls, a large number of cooling tubes which are communicated with a cooling liquid inlet and outlet are extended through said plurality of chambers and said partition walls, and steam or vapor to be condensed flows to contact with said large number of cooling tubes to effect the heat transfer between said steam or vapor and the cooling liquid flowing through said large number of cooling tubes so that said steam or vapor may be condensed, CHARACTERIZED IN THAT said large number of cooling tubes are straightly inclined from the high-pressure steam or vapor chambers toward the low-pressure steam or vapor chambers, each of tube holes formed through the partition wall for receiving and supporting the cooling tube therein is substantially at a right angle with respect to said partition wall, and a small space is formed between each of said large number of cooling tubes and each of said tube holes, whereby the condensate flowing along the inclined cooling tube may fills said small space thereby effecting the seal between said high-and low-pressure steam or vapor chambers.
Claim 7
Dependent Claim
23 words
A multistage condenser as defined in claim 4 wherein said tube holes on the side of said high-pressure chamber have substantially square edges.
Claim 8
Dependent Claim
23 words
A multistage condenser as defined in claim 4 wherein an annular groove with square corners is formed in each of said tube holes.
References Cited (Backward Citations)
US3204692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |