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US4572286A
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Boiling cooling apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1982-04-07
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Granted: 1986-02-25
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Expires: 2002-04-07
Abstract
Abstract The boiling cooling apparatus is comprised of a heat generating device which is completely immersed in a liquid coolant which partially fills a sealed container. At least one vertically extending passage is provided through the heat producing device whereby ascending bubbles formed in the passage by the heat transfer from the heat generating device to the liquid medium cause an upward current flow through the passage. A plurality of current flow control plates are provided for diverting the upward flow of liquid coolant laterally and downwardly along the sides of the container to provide convection cooling of the liquid and directing the downward flow of liquid coolant into the lower end of the passage in the heat generating device to provide a cyclic flow of the cooling liquid.
Inventors
- 👤 Masao Fujii
- 👤 Kazushige Nakao
- 👤 Haruo Tetsuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
F; F25; F25B; F25B23/00; F25B23/006; H; H10; H10W; H10W40/00; H10W40/30; F28; F28F; F28F13/00; F28F13/06; H10W40/70; H10W40/73; F25B2500/00; F25B2500/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
184 words
A boiling cooling apparatus having a liquid coolant, a heat generating element immersed in the liquid coolant, a container for accommodating said liquid coolant and heat generating element, a first passageway provided in said heat generating element so that the bubbles of said liquid coolant formed by the heat produced from said heat generating element flow upwardly through said first passageway, a guide positioned in the upper part of the liquid coolant in said container so as to prevent the rippling of the liquid coolant caused by the ascending flow of intermingled liquid coolant and bubbles that pass through the first passageway and baffle means surrounding the sides of said element in spaced relation to the inner wall of the container to define a second passageway whereby said liquid coolant is induced to flow downwardly in contact with the inner wall of said container by the force developed by the ascending flow of said bubbles and wherein said baffle means is connected to the bottom of said first passageway so that the descending flow of said liquid coolant is directed to the first passageway.
Claim 2
Dependent Claim
184 words
A boiling cooling apparatus having a liquid coolant, a heat generating element immersed in the liquid coolant, a container for accommodating said liquid coolant and heat generating element, a first passageway provided in said heat generating element so that the bubbles of said liquid coolant formed by the heat produced from said heat generating element flow upwardly through said first passageway, a guide positioned in the upper part of the liquid coolant in said container so as to prevent the rippling of the liquid coolant caused by the ascending flow of intermingled liquid coolant and bubbles that pass through the first passageway and baffle means surrounding the sides of said element in spaced relation to the inner wall of the container to define a second passageway whereby said liquid coolant is induced to flow downwardly in contact with the inner wall of said container by the force developed by the ascending flow of said bubbles and wherein said baffle means is connected to the bottom of said first passageway so that the descending flow of said liquid coolant is directed to the first passageway.
Claim 3
Dependent Claim
14 words
A boiling cooling apparatus according to claim 1 wherein the guide is curved upward.
Claim 4
Dependent Claim
19 words
A boiling cooling apparatus according to claim 2 wherein the upwardly curved guide has a hole in the top.
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) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |