US3626080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for circulating liquid coolants
Assignee: Allis Chalmers Corp
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Filing: 1969-12-10
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Granted: 1971-12-07
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Expires: 1989-12-10
Abstract
Abstract An electric circuit interrupter comprises a tank in which arcinterrupting devices are located. The tank contains a cooling liquid comprising oil and liquid freon in which the devices are submerged. A tubular baffle completely submerged in the cooling liquid and spaced from the tank wall surrounds the devices. Heat generated by current flow through the devices causes heating of the cooling liquid and vaporization and bubbling of some of the liquid freon within the baffle. This, in turn, causes the cooling liquid to flow upward inside the baffle, over the top edge of the baffle, downward outside the baffle, and around the bottom edge of the baffle. The vaporized freon recondenses on exposed surfaces inside the tank and flows back into the cooling liquid. Thus, circulation of the cooling liquid is achieved and more efficient cooling of the devices results.
Inventors
- 👤 Ronald A Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:06
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; H; H01; H01H; H01H9/00; H01H9/52; H01H2009/526
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
In combination, a tank, a heat-emmanating device in said tank, a body of liquid coolant in said tank in which at least a portion of said device is immersed, said coolant comprising at least two liquids, one of said liquids being more volatile than the other, and baffle means comprising a chamber and inlet means and outlet means communicating therewith, said chamber containing a portion of said body of said liqUid coolant and at least said inlet means being in direct communication with the remainder of said body of said liquid coolant, said baffle means being disposed so that heat emmanating from said device effects vaporization of at least some of said one liquid in said chamber thereby effecting flow of said liquid coolant through said inlet means, said chamber and said outlet means and movement of said body of liquid coolant in said tank.
Claim 2
Dependent Claim
145 words
In combination, a tank, a heat-emmanating device in said tank, a body of liquid coolant in said tank in which at least a portion of said device is immersed, said coolant comprising at least two liquids, one of said liquids being more volatile than the other, and baffle means comprising a chamber and inlet means and outlet means communicating therewith, said chamber containing a portion of said body of said liqUid coolant and at least said inlet means being in direct communication with the remainder of said body of said liquid coolant, said baffle means being disposed so that heat emmanating from said device effects vaporization of at least some of said one liquid in said chamber thereby effecting flow of said liquid coolant through said inlet means, said chamber and said outlet means and movement of said body of liquid coolant in said tank.
Claim 3
Dependent Claim
33 words
A combination according to claim 1 including cooling means on said tank to condense that portion of said one liquid which volatilizes and to effect its recombination with said body of liquid coolant.
Claim 4
Dependent Claim
21 words
A combination according to claim 1 wherein said device is an electrical device and said liquid coolant comprises electrical insulating liquids.
Claim 5
Dependent Claim
22 words
A combination according to claim 3 wherein said one of said liquids comprises a volatile halogenated hydrocarbon and the other comprises oil.
Claim 6
Dependent Claim
21 words
A combination according to claim 1 wherein said outlet means is located below the surface of said body of liquid coolant.
Claim 7
Dependent Claim
24 words
A combination according to claim 2 wherein said tank comprises a cover and said cooling means comprises at least a portion of said cover.
Claim 8
Dependent Claim
22 words
A combination according to claim 6 wherein said cooling means comprises means which project from said cover toward said body of liquid.
Claim 9
Dependent Claim
21 words
A combination according to claim 1 wherein said chamber of said baffle means surrounds at least a portion of said device.
Claim 10
Dependent Claim
33 words
A combination according to claim 8 wherein said baffle means comprises a tubular member having its upper edge located below the surface of said body of liquid when the latter is at rest.
References Cited (Backward Citations)
US2288341A
Cited
US2440930A
Cited
US2886746A
Cited
FR1475310A
Cited
US3406244A
Cited
US3417814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |