US4228850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate used in condenser
Assignee: Hisaka Works Ltd
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Filing: 1978-07-25
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Granted: 1980-10-21
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Expires: 1998-07-25
Abstract
Abstract A plate used in a plate type condenser comprises inclined grooves having a V-shaped external appearance and a vertical groove which extends through the bottoms of the V's to communicate with the inclined grooves, so that the condensate flows down along the inclined grooves and then along the vertical groove to be discharged out of the condenser.
Inventors
- 👤 Hiroyuki Sumitomo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:20
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28B; F28B1/00; F28B1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A plate for use in a condenser, said plate including condensate collecting and discharging elements, said condensate collecting and discharging elements comprising a plurality of V-shaped inclined grooves downwardly sloped towards a central portion of said plate, and a vertical groove formed along said central portion of said plate connecting with a lowest portion of each of said inclined grooves, wherein said inclined grooves form ramps leading to said vertical groove and said vertical groove forms a recessed channel, said condensate collecting and discharging elements further comprising a plurality of alternating longitudinal grooves and valleys, lower ends of said valleys opening towards said downwardly sloped inclined grooves, whereby said inclined grooves and said vertical groove minimizes the area of a filmy downflow liquid layer and prevents a film from growing too thick, thereby improving the heat transfer surface of said plate.
Claim 2
Dependent Claim
141 words
A plate for use in a condenser, said plate including condensate collecting and discharging elements, said condensate collecting and discharging elements comprising a plurality of V-shaped inclined grooves downwardly sloped towards a central portion of said plate, and a vertical groove formed along said central portion of said plate connecting with a lowest portion of each of said inclined grooves, wherein said inclined grooves form ramps leading to said vertical groove and said vertical groove forms a recessed channel, said condensate collecting and discharging elements further comprising a plurality of alternating longitudinal grooves and valleys, lower ends of said valleys opening towards said downwardly sloped inclined grooves, whereby said inclined grooves and said vertical groove minimizes the area of a filmy downflow liquid layer and prevents a film from growing too thick, thereby improving the heat transfer surface of said plate.
References Cited (Backward Citations)
US2285225A
Cited
US3532161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |