Patent US3887660A successfully refreshed from Google Patents.
US3887660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for dissolving a poorly soluble gas in a liquid
Assignee: Tampella Oy AB
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Filing: 1973-09-21
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Granted: 1975-06-03
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Expires: 1993-09-21
Abstract
Abstract There is disclosed a device for dissolving a poorly soluble gas in a liquid, especially for aerating water, a device which comprises two parallel pipes fitted one inside the other, an annular throttling zone at the upper end of the inner pipe for reducing the pressure of the liquid, means for feeding the gas into the throttling zone for dissolving the gas in the liquid, and an inlet and outlet for the liquid. In this device the throttling zone has been fitted in the annular space between the pipes fitted one inside the other, while the inner pipe is connected to the inlet for the liquid, and pumping means has been provided in the inner pipe for creating a sufficient surface level difference between the inside and the outside of the device in order to cause the liquid to flow through the annular throttling zone.
Inventors
- 👤 Hakan Wilhelm Romantschuk
- 👤 Pauli Unto Juhani Nyberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:06
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1278; C02F3/1294; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/234; B01F23/2342; B01F23/23421; C02F3/14; C02F3/16; C02F3/165; B01F27/00; B01F27/80; B01F33/00; B01F33/50; B01F33/503; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
243 words
A device for dissolving poorly soluble gas in a liquid in which the device is partially immersed comprising: an inner pipe having an upper portion with a first inlet located below the surface of the liquid for conducting liquid into said pipe and a first outlet located above the surface of the liquid forming an upper through-flow channel extending between said first inlet and said first outlet; an outer pipe coaxial with and substantially surrounding said inner pipe and having a closed lower end below the lower end of said inner pipe, said outer pipe being spaced from said inner pipe and defining therewith an annular throttling zone below said first outlet and above said first inlet; said inner pipe having a lower portion with a second outlet communicating with the liquid below the surface of the liquid and a second inlet communicating with the interior of said outer pipe forming a lower through-flow channel extending between said second inlet and second outlet; pumping means in said upper through-flow channel for drawing the liquid into said first inlet, out of said first outlet and into said throttling zone; means, located in said throttling zone, for feeding a gas into the liquid in said zone; and a partition wall separating said upper portion of said inner pipe from said lower portion thereof, whereby the liquid flows downwardly through said outer pipe from said first outlet, through said throttling zone and into said second inlet.
Claim 2
Independent Claim
243 words
A device for dissolving poorly soluble gas in a liquid in which the device is partially immersed comprising: an inner pipe having an upper portion with a first inlet located below the surface of the liquid for conducting liquid into said pipe and a first outlet located above the surface of the liquid forming an upper through-flow channel extending between said first inlet and said first outlet; an outer pipe coaxial with and substantially surrounding said inner pipe and having a closed lower end below the lower end of said inner pipe, said outer pipe being spaced from said inner pipe and defining therewith an annular throttling zone below said first outlet and above said first inlet; said inner pipe having a lower portion with a second outlet communicating with the liquid below the surface of the liquid and a second inlet communicating with the interior of said outer pipe forming a lower through-flow channel extending between said second inlet and second outlet; pumping means in said upper through-flow channel for drawing the liquid into said first inlet, out of said first outlet and into said throttling zone; means, located in said throttling zone, for feeding a gas into the liquid in said zone; and a partition wall separating said upper portion of said inner pipe from said lower portion thereof, whereby the liquid flows downwardly through said outer pipe from said first outlet, through said throttling zone and into said second inlet.
Claim 3
Independent Claim
243 words
A device for dissolving poorly soluble gas in a liquid in which the device is partially immersed comprising: an inner pipe having an upper portion with a first inlet located below the surface of the liquid for conducting liquid into said pipe and a first outlet located above the surface of the liquid forming an upper through-flow channel extending between said first inlet and said first outlet; an outer pipe coaxial with and substantially surrounding said inner pipe and having a closed lower end below the lower end of said inner pipe, said outer pipe being spaced from said inner pipe and defining therewith an annular throttling zone below said first outlet and above said first inlet; said inner pipe having a lower portion with a second outlet communicating with the liquid below the surface of the liquid and a second inlet communicating with the interior of said outer pipe forming a lower through-flow channel extending between said second inlet and second outlet; pumping means in said upper through-flow channel for drawing the liquid into said first inlet, out of said first outlet and into said throttling zone; means, located in said throttling zone, for feeding a gas into the liquid in said zone; and a partition wall separating said upper portion of said inner pipe from said lower portion thereof, whereby the liquid flows downwardly through said outer pipe from said first outlet, through said throttling zone and into said second inlet.
Claim 4
Independent Claim
243 words
A device for dissolving poorly soluble gas in a liquid in which the device is partially immersed comprising: an inner pipe having an upper portion with a first inlet located below the surface of the liquid for conducting liquid into said pipe and a first outlet located above the surface of the liquid forming an upper through-flow channel extending between said first inlet and said first outlet; an outer pipe coaxial with and substantially surrounding said inner pipe and having a closed lower end below the lower end of said inner pipe, said outer pipe being spaced from said inner pipe and defining therewith an annular throttling zone below said first outlet and above said first inlet; said inner pipe having a lower portion with a second outlet communicating with the liquid below the surface of the liquid and a second inlet communicating with the interior of said outer pipe forming a lower through-flow channel extending between said second inlet and second outlet; pumping means in said upper through-flow channel for drawing the liquid into said first inlet, out of said first outlet and into said throttling zone; means, located in said throttling zone, for feeding a gas into the liquid in said zone; and a partition wall separating said upper portion of said inner pipe from said lower portion thereof, whereby the liquid flows downwardly through said outer pipe from said first outlet, through said throttling zone and into said second inlet.
Claim 5
Dependent Claim
26 words
A device according to claim 1, wherein said first inlet and said second outlet are directed radially outwards to the opposite sides of said inner pipe.
Claim 6
Dependent Claim
41 words
A device according to claim 1, and further including a float coupled to said outer pipe for supporting the device on the surface of the liquid, and wherein said pumping means is located along the longitudinal axis of said inner pipe.
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |