US3686522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor with a liquid-cooled winding for an electrical machine
Assignee: Individual
•
Filing: 1970-12-31
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Granted: 1972-08-22
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Expires: 1990-12-31
Abstract
Abstract A rotor with a liquid-cooled winding for an electrical machine, in which a distribution manifold for a liquid coolant is located in the rotor shaft and is made up of separate replaceable insert elements which have a higher resistance to corrosion than the rotor shaft material, the rotor being provided with axial passages connected with liquid inlet or outlet ducts with the help of radial ducts. The corrosion-resistant elements may be secured in the shaft with the help of projections, wedges or a band ring and have axial apertures. The axial apertures in said elements are coaxial with the axial passages of the rotor shaft and accommodate sealing and insulating elements.
Inventors
- 👤 Boris Leonidovich Konovalov
- 👤 Evgeny Khaimovich Glider
- 👤 Alexandr Abramovic Chigirinsky
- 👤 Oleg Borisovich Gradov
- 👤 David Bentsionovich Karpman
- 👤 Boris Volkovich Spivak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
H; H02; H02K; H02K9/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
162 words
In an electrical machine rotor having a liquid-cooled winding wherein a means for liquid cooling of the winding comprises at least two liquid-coolant distribution manifolds and axial passages formed in the rotor shaft, an improvement consisting in that said distribution manifold comprises at least one replaceable insert member of a material which is more corrosion resistant that the rotor shaft material, and being secured to the periphery of said rotor by a plurality of removable members the insert member being made in the form of a block having a liquid tight passage and apertures coaxial in assembly with said axial passages of the rotor shaft, at least one recess being provided along said rotor periphery for accommodating said replaceable insert members whereby, the liquid coolant is made to flow through said liquid tight passage and apertures and does not come in contact with the rotor material in the region of the insert member thereby preventing corrosion of rotor material in said region.
Claim 2
Dependent Claim
162 words
In an electrical machine rotor having a liquid-cooled winding wherein a means for liquid cooling of the winding comprises at least two liquid-coolant distribution manifolds and axial passages formed in the rotor shaft, an improvement consisting in that said distribution manifold comprises at least one replaceable insert member of a material which is more corrosion resistant that the rotor shaft material, and being secured to the periphery of said rotor by a plurality of removable members the insert member being made in the form of a block having a liquid tight passage and apertures coaxial in assembly with said axial passages of the rotor shaft, at least one recess being provided along said rotor periphery for accommodating said replaceable insert members whereby, the liquid coolant is made to flow through said liquid tight passage and apertures and does not come in contact with the rotor material in the region of the insert member thereby preventing corrosion of rotor material in said region.
Claim 3
Dependent Claim
79 words
An electrical machine rotor having a liquid-cooled winding as claimed in claim 1 and a plurality of said insert members, which further includes insulating tubes located in said axial passages of the rotor shaft, said tubes partly extending into said insert through said apertures; and sealing means to seal one end of the passage in each said insulating tube from a respective said insert member and to seal the other end of said passage from an associated winding conductor.
Claim 4
Dependent Claim
31 words
An electrical machine rotor as claimed in claim 1, wherein said replaceable insert members which are made as blocks of corrosion-resistant material have shoulders engaging in complementary recesses in the rotor.
Claim 5
Dependent Claim
43 words
An electrical machine rotor as claimed in claim 1, wherein at least one groove is provided along the rotor periphery to accommodate said blocks, and means comprising a circumferential band ring are provided on the rotor to securingly retain the insert-members in place.
Claim 6
Dependent Claim
31 words
An electrical machine rotor as claimed in claim 1, wherein said removable members comprise a plurality of wedges and threaded plugs to secure saId block in said recess of said rotor.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |