US4434058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling arrangement and method of operating the arrangement
Assignee: Siemens AG
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Filing: 1981-07-17
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Granted: 1984-02-28
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Expires: 2001-07-17
Abstract
Abstract A cooling arrangement particularly for cooling electrical devices having water cooled electric conductors with deionized cooling water in a closed cooling system which contains a parallel loop with a mixed bed filter in which an anion exchanger in OH form is provided which can be connected parallel with the mixed bed filter as well as in series with the mixed bed filter, permitting the cooling system to be run with the cooling water having an increased pH-value range which can be preferably 8 to 8.4.
Inventors
- 👤 Horst W. Emshoff
- 👤 Walter K/u/ sebauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:19
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
In a cooling arrangement having deionized cooling water in a closed cooling system which contains a main loop, a parallel loop with a mixed bed filter, and means for feeding an alkalizer, the improvement comprising an anion exchanger in OH form and means for connecting said anion exchanger either in parallel with the mixed bed filter or in series with the mixed bed filter.
Claim 2
Dependent Claim
64 words
In a cooling arrangement having deionized cooling water in a closed cooling system which contains a main loop, a parallel loop with a mixed bed filter, and means for feeding an alkalizer, the improvement comprising an anion exchanger in OH form and means for connecting said anion exchanger either in parallel with the mixed bed filter or in series with the mixed bed filter.
Claim 3
Dependent Claim
32 words
The improvement according to claim 1, wherein said means for feeding an alkalizer are disposed ahead of the anion exchanger, said anion exchanger and said mean for feeding forming a parallel loop.
Claim 4
Dependent Claim
39 words
The improvement according to claim 1 or 2, and further including an additional parallel loop having a cation exchanger in H form in series with a conductivity measuring cell and a conductivity measuring cell disposed in the main loop.
Claim 5
Independent Claim
107 words
A method for operating a cooling arrangement which includes a closed cooling system with deionized cooling water having a main loop; a parallel loop with a mixed bed filter; means for feeding an alkalizer; and an anion exchanger adapted to be connected either in series or parallel with the mixed bed filter, comprising conducting a partial stream of the cooling water via the anion exchanger, and feeding an alkalizer in if the pH value in the main loop is below a lower value and connecting the anion exchanger in series with the mixed bed filter if the pH value of the cooling water reaches an upper limit.
Claim 6
Independent Claim
107 words
A method for operating a cooling arrangement which includes a closed cooling system with deionized cooling water having a main loop; a parallel loop with a mixed bed filter; means for feeding an alkalizer; and an anion exchanger adapted to be connected either in series or parallel with the mixed bed filter, comprising conducting a partial stream of the cooling water via the anion exchanger, and feeding an alkalizer in if the pH value in the main loop is below a lower value and connecting the anion exchanger in series with the mixed bed filter if the pH value of the cooling water reaches an upper limit.
Claim 7
Independent Claim
130 words
A method for operating a cooling arrangement including a closed cooling system with deionized cooling water having a main loop; a parallel loop with a mixed bed filter; means for feeding an alkalizer; and an anion exchanger adapted to be connected either in series or parallel with the mixed bed filter, comprising, when starting up, conducting a partial stream of the cooling water through the anion exchanger and the mixed bed filter until the electric conductivity in the main loop and the electric conductivity behind the anion exchanger is reduced to a predetermined low value; and then turning the mixed bed filter off and conducting the partial streams exclusively via the anion exchanger, and feeding alkalizer to the cooling water until the pH value is raised to a predetermined value.
Claim 8
Independent Claim
130 words
A method for operating a cooling arrangement including a closed cooling system with deionized cooling water having a main loop; a parallel loop with a mixed bed filter; means for feeding an alkalizer; and an anion exchanger adapted to be connected either in series or parallel with the mixed bed filter, comprising, when starting up, conducting a partial stream of the cooling water through the anion exchanger and the mixed bed filter until the electric conductivity in the main loop and the electric conductivity behind the anion exchanger is reduced to a predetermined low value; and then turning the mixed bed filter off and conducting the partial streams exclusively via the anion exchanger, and feeding alkalizer to the cooling water until the pH value is raised to a predetermined value.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |