US4330033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant pressure type ebullient cooling equipment
Assignee: Hitachi Ltd
•
Filing: 1980-03-05
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Granted: 1982-05-18
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Expires: 2000-03-05
Abstract
Abstract A constant pressure type ebullient cooling equipment has a liquid receiver at a position higher than a condenser. The liquid receiver is connected with a vaporizer containing a liquid refrigerant by a coupling pipe. A valve and a device for opening or shutting the valve are disposed at an upper part of the liquid receiver. When refrigerant vapor produced in the vaporizer is introduced into the condenser, refrigerant liquid in the vaporizer moves to the liquid receiver. The condenser and the liquid receiver are connected by a deaerating pipe. Non-condensable gases such as air contained in the cooling equipment and the refrigerant enter the liquid receiver, and are emitted through the valve. As a result, the interior of the cooling equipment is held under a substantially constant pressure.
Inventors
- 👤 Sadayuki Okada
- 👤 Hisao Sonobe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:24
CPC Classifications
F; F25; F25B; F25B23/00; F25B23/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
174 words
A constant pressure-type ebullient cooling equipment comprising: a vaporizer which is filled up with refrigerant liquid; a condenser which condenses refrigerant vapor produced within said vaporizer; a variable volume type liquid receiver which is located above said condenser and which receives the refrigerant liquid when the refrigerant vapor exists in said condenser; coupling pipe means for, respectively, connecting said vaporizer and said condenser, and said vaporizer and said liquid receiver; means for detecting a voluminal change in said liquid receiver and for providing an indication of said change; outlet means for allowing escape of non-condensable gases located at an upper portion of said liquid receiver; a valve means for emitting non-condensable gases having gathered in said liquid receiver through said outlet means, when the amount of non-condensable gases in said receiver has reached a pre-determined amount; and means for opening and shutting said valve means in response to an indication of a voluminal change in said liquid receiver from said detecting means whereby the internal pressure of said cooling equipment is held substantially constant.
Claim 2
Dependent Claim
174 words
A constant pressure-type ebullient cooling equipment comprising: a vaporizer which is filled up with refrigerant liquid; a condenser which condenses refrigerant vapor produced within said vaporizer; a variable volume type liquid receiver which is located above said condenser and which receives the refrigerant liquid when the refrigerant vapor exists in said condenser; coupling pipe means for, respectively, connecting said vaporizer and said condenser, and said vaporizer and said liquid receiver; means for detecting a voluminal change in said liquid receiver and for providing an indication of said change; outlet means for allowing escape of non-condensable gases located at an upper portion of said liquid receiver; a valve means for emitting non-condensable gases having gathered in said liquid receiver through said outlet means, when the amount of non-condensable gases in said receiver has reached a pre-determined amount; and means for opening and shutting said valve means in response to an indication of a voluminal change in said liquid receiver from said detecting means whereby the internal pressure of said cooling equipment is held substantially constant.
Claim 3
Dependent Claim
49 words
A constant pressure type ebullient cooling equipment according to claim 1, wherein a layer of sealing liquid which has a specific gravity lower than that of the refrigerant and which does not dissolve in the refrigerant is formed on a surface of the refrigerant liquid in said liquid receiver.
Claim 4
Dependent Claim
56 words
A constant pressure type ebullient cooling equipment according to claim 1, wherein said coupling pipe means includes a pipe for connecting an upper portion of said condenser to a lower portion of said liquid receiver, and said pipe being provided with a throttle and radiation fins for cooling the refrigerant vapor having passed through said throttle.
Claim 5
Dependent Claim
27 words
A constant pressure type ebullient cooling equipment according to claim 1, further comprising means for heating the refrigerant liquid within said vaporizer to produce said refrigerant vapor.
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) | 1985-05-17 | 1985-11-16 | 1986-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-17 | 1989-11-16 | 1990-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-17 | 1993-11-16 | 1994-05-18 | $7700.00 | Window Closed / Lapsed |