US3793805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing air from a liquid
Assignee: Eastman Kodak Co
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Filing: 1971-12-13
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Granted: 1974-02-26
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Expires: 1991-12-13
Abstract
Abstract A method and apparatus for removing air from a liquid. The invention provides a heater for heating the liquid so as to reduce the ability of the liquid to retain air, a tank for storing an accumulation of the liquid which has been deaerated, and a means for delivery of the heated liquid into the tank. The delivery means comprises a vertical pipe exposing the hot liquid to an ambiance so that a substantial number of discrete bubbles in the heated liquid will accelerate toward and burst upon contact with the ambiance. The delivery means further includes a generally conically shaped member for cascading the heated liquid in the form of a film so that the film of liquid is exposed to the ambiance to substantially rid the liquid of dissolved air. The invention further provides, in the tank, means for cooling the accumulation of deaerated liquid in such a way that the surface of the liquid in the tank is at a substantially higher temperature than the remainder of the liquid in the tank. The hotter surface liquid functions as a barrier to prevent reaerating of the liquid in the tank.
Inventors
- 👤 E Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:51
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0021; B01D19/0073; B01D19/0078; C; C09; C09B; C09B41/00; G; G03; G03C; G03C1/00; G03C1/74
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
39 words
The invention of claim 1 and including the step of: e. conveying the heated liquid vertically toward an ambiance so as to permit bubbles in said liquid to accelerate toward the ambiance and burst upon contact with the ambiance.
Claim 2
Dependent Claim
20 words
The invention of claim 2 wherein in step (b), the liquid is agitated as it is flowed in film-like form.
Claim 3
Independent Claim
149 words
An apparatus for removing air from a liquid, the apparatus comprising: a. means for heating the liquid to a temperature substantially above room temperature; b. means for flowing said heated liquid in film-like form in contact with an ambiance so as to permit air to escape from the liquid; c. means located downstream of said flowing means for collecting said liquid and for storing said liquid to a predetermined depth with the surface of said collected liquid in contact with an ambiance; and d. means for cooling a lower portion of said liquid in said collecting means while maintaining a portion of the liquid at the surface thereof at a temperature substantially above that of the cooled portion of the liquid, whereby the heated portion at the surface of the collected liquid functions as a barrier to substantially preclude air from entering the cooled portion of the collected liquid.
Claim 4
Dependent Claim
58 words
The invention of claim 4 and including: e. means for conveying said heated liquid from said heating means to said flowing means, said conveying means comprising a generally-vertically-directed pipe for conveying the heated liquid vertically toward an ambiance so as to permit bubbles in said liquid to accelerate toward the ambiance and burst upon contact with the ambiance.
Claim 5
Dependent Claim
22 words
The invention of claim 4 wherein said flowing means includes means for agitating said liquid as it is flowed in film-like form.
Claim 6
Independent Claim
227 words
An apparatus for removing air from a liquid, the apparatus comprising: means for heating said liquid to reduce the ability of the liquid to retain air; means for storing an accumulation of deaerated liquid to a predetermined depth with the surface of the stored liquid in contact with an ambiance, said liquid storing means including an outlet below the liquid surface level for peRmitting the stored liquid to be withdrawn from the storing means; delivery means for introducing the heated liquid into the storing means, the delivery means including: a. a generally-vertically upstanding conduit which receives the heated liquid at a lower portion thereof and delivers the heated liquid to a higher portion thereof, the higher portion of the conduit including an opening to expose the heated liquid to the ambiance, and b. means for receiving the heated liquid from the higher portion of the conduit and for cascading the liquid in the form of a film toward the deaerated liquid in the storing means; and means for cooling a lower portion of the liquid in the storing means so that the temperature of the liquid at the surface is substantially higher than the temperature of the liquid proximate the outlet, whereby the warmer liquid at the surface functions as a barrier to substantially isolate air in the ambiance from the relatively cooler liquid adjacent the outlet.
Claim 7
Dependent Claim
26 words
The invention according to claim 7 wherein said cascading means has the general shape of an upstanding frustum of cone and has a hollow extending therethrough.
Claim 8
Dependent Claim
22 words
The invention according to claim 8 wherein said pipe extends through said storing means and through the hollow of said cascading means.
Claim 9
Dependent Claim
31 words
The invention according to claim 9 wherein said cascading means includes protuberances formed on circles on said cascading means for agitating the liquid as it is cascaded down said cascading means.
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |