US4268280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously degassing water
Assignee: Fujifilm Holdings Corp
•
Filing: 1979-06-07
•
Granted: 1981-05-19
•
Expires: 1999-06-07
Abstract
Abstract A method of continuously degassing water in which the vapor phase components melted in the water are continuously degassed by heating the water and reducing the pressure of the water. An in-line heater is used to continuously mix saturated steam into water supplied continuously, to heat said water and to accelerate the foaming of the vapor phase components melted in the water by cavitation caused by the mixing of said saturated steam. Thereafter the water is degassed automatically while being pooled in a degassing tank under atmospheric pressure.
Inventors
- 👤 Shinichi Fujii
- 👤 Hiroshi Hata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:51
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0005; B01D19/001; Y; Y10; Y10S; Y10S261/00; Y10S261/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
In a method of continuously degassing water in which vapor phase components melted in water are continuously degassed by heating and reducing the pressure of the water, the improvement comprising introducing water into a diffuser at one end thereof, mixing saturated steam into the water in said diffuser along portions between inlet and exhaust thereof to heat said water and accelerate foaming of said vapor phase components by cavitation created in the water by local drop in pressure and, pooling said water under atmospheric pressure to allow said water to degass.
Claim 2
Dependent Claim
91 words
In a method of continuously degassing water in which vapor phase components melted in water are continuously degassed by heating and reducing the pressure of the water, the improvement comprising introducing water into a diffuser at one end thereof, mixing saturated steam into the water in said diffuser along portions between inlet and exhaust thereof to heat said water and accelerate foaming of said vapor phase components by cavitation created in the water by local drop in pressure and, pooling said water under atmospheric pressure to allow said water to degass.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein water is pooled in a degassing tank, further comprising the step of removing degassed water from the bottom of said tank into a conduit.
Claim 4
Dependent Claim
65 words
The method of claim 1 wherein said step of mixing takes place in an in-line heater and said step of mixing further comprises the steps of continuously introducing water to one inlet of said heater for flow in said diffuser therethrough, introducing steam to another inlet of said heater and mixing said steam and water by passage of steam through injection ports in said diffuser.
Claim 5
Independent Claim
34 words
The method of claims 1 or 3 further comprising the steps of measuring the temperature of the heated water and controlling the introduction of steam into said heater to maintain constant heated water temperature.
Claim 6
Dependent Claim
23 words
The method of claim 2 wherein said step of removing degassed water occurs following a step of introducing cleaning liquid into said conduit.
Claim 7
Dependent Claim
24 words
The method of claim 2 wherein said step of removing degassed water occurs following a step of introducing a coating liquid into said conduit.
Claim 8
Independent Claim
24 words
The method of claims 1, 2, or 3 further comprising the step of regulating the flow rate of water to be mixed with steam.
Claim 9
Independent Claim
23 words
The method of claims 2, 5 or 6 further comprising the step of cooling said degassed water prior to introduction into said conduit.
References Cited (Backward Citations)
US2455498A
Cited
US2622694A
Cited
US2684231A
Cited
US2809711A
Cited
US3926664A
Cited
US4160002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |