US4502286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant pressure type boiling cooling system
Assignee: Hitachi Ltd
•
Filing: 1983-08-04
•
Granted: 1985-03-05
•
Expires: 2003-08-04
Abstract
Abstract A constant pressure boiling cooling system including evaporators, a condenser and a liquid refrigerant sump, wherein the evaporators and the condenser are arranged substantially horizontally in side-by-side relation, and the first communicating tubes connect the upper portions of the evaporators to the upper portions of the condenser respectively, and the second communicating tubes connect the lower portions of the evaporators to the lower portions of the condenser respectively.
Inventors
- 👤 Sadayuki Okada
- 👤 Hisao Sonobe
- 👤 Tomoaki Mino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
F; F25; F25B; F25B23/00; F25B23/006; F28; F28D; F28D15/00; F28D15/02; F28D15/0266; H; H10; H10W; H10W40/00; H10W40/70; H10W40/73
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A constant pressure boiling cooling system comprising evaporators filled with liquid refrigerant for cooling heating generating bodies, a condenser for cooling and liquefying the vapour of the refrigerant from said evaporators and a variable volume refrigerant sump for absorbing pressure changes caused by the boiling of the refrigerant in said evaporators and said condenser, said evaporators and said condenser being arranged in substantially horizontal side by side relation and connected with one another at an upper and a lower portions of the side surfaces thereof by means of first and second communicating tubes respectively and said condenser comprising a plurality of condensing tubes located in substantially horizontal relation and two headers located in substantially vertical relation which are respectively connected to the both ends of said condensing tubes.
Claim 2
Dependent Claim
128 words
A constant pressure boiling cooling system comprising evaporators filled with liquid refrigerant for cooling heating generating bodies, a condenser for cooling and liquefying the vapour of the refrigerant from said evaporators and a variable volume refrigerant sump for absorbing pressure changes caused by the boiling of the refrigerant in said evaporators and said condenser, said evaporators and said condenser being arranged in substantially horizontal side by side relation and connected with one another at an upper and a lower portions of the side surfaces thereof by means of first and second communicating tubes respectively and said condenser comprising a plurality of condensing tubes located in substantially horizontal relation and two headers located in substantially vertical relation which are respectively connected to the both ends of said condensing tubes.
Claim 3
Dependent Claim
24 words
A constant pressure boiling cooling system as claimed in claim 1, wherein said liquid refrigerant sump is located above said evaporators or said condenser.
Claim 4
Dependent Claim
44 words
A constant pressure boiling cooling system as claimed in claim 1 or 2, further comprising a gas release tube connecting said liquid refrigerant sump to the upper portion of said condenser, said gas release tube being fitted with a throttle and heat dissipating fins.
Claim 5
Dependent Claim
61 words
A constant pressure boiling cooling system as claimed in claim 1, wherein said evaporators comprise heat absorbing sections provided against heat generating sections of a semiconductor device, at least some electric accessory parts of said semiconductor device which are located above said heat absorbing section and means for forming the whole system into a packaged unit including said boiling cooling system.
Claim 6
Dependent Claim
27 words
A constant pressure boiling cooling system as claimed in claim 4, further comprising a partition plate in said packaged unit interposed between said evaporators and said condenser.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |