US3829070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasification system
Assignee: Fort James Corp
•
Filing: 1972-10-13
•
Granted: 1974-08-13
•
Expires: 1992-10-13
Abstract
Abstract A system of gasifying a liquid utilizing the ''''Coanda effect.'''' In the system a fluid is directed through a slit under pressure whereupon it attaches itself to a flow attachment surface and entrains the liquid to be gasified. A gas is admitted to the entrained liquid flow path with resultant high degree of turbulent mixing and high shear at the gas-liquid interface. This causes the formation of great numbers of small bubbles which are ejected along with the entrained liquid into the body of the liquid to be gasified.
Inventors
- 👤 I Reba
- 👤 E Wolthausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:33
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/20; B01F25/21; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2323; B01F23/23231; B01F23/232311; B01F23/40; B01F23/45; B01F23/454
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
106 words
Apparatus for gassifying a body of liquid, including: means defining a flow path in communication with said body of liquid and leading to an exit aperture; means defining at least one slit communicating with said flow path at a predetermined location upstream from said exit aperture; means for injecting an entraining stream of fluid under pressure through said slit and into said flow path in a direction toward said exit aperture to entrain liquid disposed in said flow path an cause the entrained liquid to exit from said exit aperture; and means for introducing a gas into said flow path to mix with said entrained liquid.
Claim 2
Dependent Claim
106 words
Apparatus for gassifying a body of liquid, including: means defining a flow path in communication with said body of liquid and leading to an exit aperture; means defining at least one slit communicating with said flow path at a predetermined location upstream from said exit aperture; means for injecting an entraining stream of fluid under pressure through said slit and into said flow path in a direction toward said exit aperture to entrain liquid disposed in said flow path an cause the entrained liquid to exit from said exit aperture; and means for introducing a gas into said flow path to mix with said entrained liquid.
Claim 3
Dependent Claim
45 words
The apparatus of claim 1 wherein said means for introducing said entraining stream of fluid into said throughbore includes a fluid flow attachment surface leading from said slit, said fluid flow attachment surface being positioned to direct the fluid attached thereto in a downstream direction.
Claim 4
Dependent Claim
17 words
The apparatus according to claim 1 wherein said slit is disposed circumferentially about said liquid flow path.
Claim 5
Dependent Claim
48 words
The apparatus according to claim 1 wherein said means for introducing a gas into said flow path includes means defining at least one passageway for said gas communicating with said flow path and means inducing a flow of said gas through said passageway and into said flow path.
Claim 6
Dependent Claim
51 words
The apparatus according to claim 1 wherein said means for introducing a gas into said flow path includes means defining at least one passageway for said gas communicating with said flow path and impeller means driven by a prime mover which exerts a positive pressure on the gas within said passageway.
Claim 7
Dependent Claim
38 words
The apparatus according to claim 4 wherein said inducing means comprises a venturi nozzle defining at least a portion of said flow path which causes a pressure reduction in the flow path in the vicinity of said passageway.
Claim 8
Dependent Claim
22 words
The apparatus according to claim 1 additionally including flotation means for supporting said apparatus on the surface of said body of liquid.
Claim 9
Dependent Claim
28 words
The apparatus according to claim 7 wherein said means defining a flow path for said liquid includes a nozzle member mounted for movement relative to said flotation means.
Claim 10
Independent Claim
89 words
A method of gassifying a body of liquid, comprising the steps of: positioning means defining a liquid flow path in communication with said body of liquid so that a portion of said liquid occupies said flow path; injecting an entraining stream of fluid into said flow path at a predetermined location. directing the entraining stream of fluid so that it entrains and induces flow of said liquid along said flow path; and introducing a gas into said flow path to mix with the liquid therein and gassify said liquid.
Claim 11
Independent Claim
89 words
A method of gassifying a body of liquid, comprising the steps of: positioning means defining a liquid flow path in communication with said body of liquid so that a portion of said liquid occupies said flow path; injecting an entraining stream of fluid into said flow path at a predetermined location. directing the entraining stream of fluid so that it entrains and induces flow of said liquid along said flow path; and introducing a gas into said flow path to mix with the liquid therein and gassify said liquid.
Claim 12
Dependent Claim
11 words
The method according to claim 9 wherein the fluid is water.
Claim 13
Dependent Claim
11 words
The method according to claim 9 wherein the gas is air.
Claim 14
Dependent Claim
31 words
The method according to claim 9 wherein the entraining stream is directed by attaching it to a fluid flow attachment surface leading in a downstream direction from said predetermined injection location.
Claim 15
Dependent Claim
37 words
The method according to claim 12 wherein entrainment and induction of flow of said liquid is accomplished by creating a zone of reduced pressure in said flow path in the vicinity of said fluid flow attachment surface.
Claim 16
Dependent Claim
37 words
The method according to claim 9 wherein the entraining stream is injected into said flow path with a velocity sufficient to create a turbulent condition in said flow path whereby gAs bubbles are formed in said liquid.
Claim 17
Dependent Claim
19 words
The method according to claim 9 wherein the entraining stream is injected through a slit surrounding said flow path.
References Cited (Backward Citations)
US3677525A
Cited
US3704008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |