US3860165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge and method of operating the same
Assignee: BWS Technologie GmbH
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Filing: 1973-09-13
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Granted: 1975-01-14
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Expires: 1993-09-13
Abstract
Abstract An upright centrifuge basket has a lower end and an upper end and its interior diverges upwardly in cross-section. An accelerator cone is mounted in the basket in the region of its lower end to accelerate material being centrifuged. An electromotor is above the basket, extending in part into the same and having an output shaft which is connected with the accelerator member for rotating the basket which is thus suspended from the electromotor. The electromotor has cooling fins and is surrounded by an air-guide sleeve which is closed at its upper end and the lower end of which is open in the region of the accelerator member, so that cooling air which has been heated by contact with the electromotor is directed by the sleeve onto the material being centrifuged in the basket.
Inventors
- 👤 Bernhard Fiedler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:52
CPC Classifications
B; B04; B04B; B04B9/00; B04B15/00; B04B15/02; B04B15/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
114 words
A centrifuge, particularly a sugar centrifuge, comprising an upright centrifuge basket having a lower end and an upwardly diverging interior cross-section; an accelerator member connected to said basket in the region of said lower end for accelerating material being centrifuged; an electromotor at least in part above said basket and having an output shaft which extends into the same and is connected with said accelerator member for rotating said basket, said electromotor having cooling fins; and an air-guide sleeve surrounding said electromotor and shaft and having a lower open end in the region of said accelerator member, so as to direct air heated in said electromotor onto the material being centrifuged in said basket.
Claim 2
Dependent Claim
114 words
A centrifuge, particularly a sugar centrifuge, comprising an upright centrifuge basket having a lower end and an upwardly diverging interior cross-section; an accelerator member connected to said basket in the region of said lower end for accelerating material being centrifuged; an electromotor at least in part above said basket and having an output shaft which extends into the same and is connected with said accelerator member for rotating said basket, said electromotor having cooling fins; and an air-guide sleeve surrounding said electromotor and shaft and having a lower open end in the region of said accelerator member, so as to direct air heated in said electromotor onto the material being centrifuged in said basket.
Claim 3
Dependent Claim
62 words
A centrifuge as defined in claim 1; further comprising a housing surrounding said basket and having an upper open end provided with a cover; and upper and lower journals mounting said electromotor on said cover, said electromotor extending into said basket to such an extent that said lower journal is located in the region of the center of gravity of said basket.
Claim 4
Dependent Claim
20 words
A centrifuge as defined in claim 2, said accelerator member having impeller spokes which are fixedly connected to said shaft.
Claim 5
Dependent Claim
39 words
A centrifuge as defined in claim 1, said sleeve having a cylindrical upper main portion, and a lower end portion which extends from said main portion to said lower open end and conically tapers in direction towards the laTter.
Claim 6
Dependent Claim
29 words
A centrifuge as defined in claim 4, wherein said accelerator member has an inner diameter which is substantially equal to the smallest outer diameter of said lower end portion.
Claim 7
Dependent Claim
34 words
A centrifuge as defined in claim 1; further comprising a housing surrounding said basket and having an upper open end provided with a cover; and elastomeric mounting members mounting said electromotor on said cover.
Claim 8
Dependent Claim
21 words
A centrifuge as defined in claim 1; and further comprising means for regulating the flow of cooling air to said electromotor.
Claim 9
Dependent Claim
115 words
A centrifuge, particularly a sugar centrifuge, comprising an upright centrifuge basket having a lower end and an upwardly diverging interior cross-section; an accelerator member connected to said basket in the region of said lower end for accelerating material being centrifuged; an air-cooled electromotor at least in part above said basket and having an output shaft which extends into the same and is connected with said accelerator member for rotating said basket; and an air-guide sleeve connected to said electromotor and defining a passage for air heated by heat exchange with the electromotor, said passage communicating with the region of said accelerator member and directing the heating air onto the material being centrifuged in said basket.
Claim 10
Dependent Claim
115 words
A centrifuge, particularly a sugar centrifuge, comprising an upright centrifuge basket having a lower end and an upwardly diverging interior cross-section; an accelerator member connected to said basket in the region of said lower end for accelerating material being centrifuged; an air-cooled electromotor at least in part above said basket and having an output shaft which extends into the same and is connected with said accelerator member for rotating said basket; and an air-guide sleeve connected to said electromotor and defining a passage for air heated by heat exchange with the electromotor, said passage communicating with the region of said accelerator member and directing the heating air onto the material being centrifuged in said basket.
Claim 11
Dependent Claim
131 words
In a method of operating a continuous centrifuge having an upright basket of upwardly divergent inner cross-section bounded by an internal surface of the basket, and an air-colled electromotor above the basket and suspending the same for rotation, the steps of rotating the basket by operating the electromotor with attendent development of heat in the latter; introducing viscous material to be centrifuged into the basket with attendant centrifuging of such material and distribution thereof on the internal surface of the basket when the latter is rotated; and advancing air in a path in which it exchanges heat with the electromotor and thereupon toward and along the internal surface of the basket in heat-exchange relation with the material distributed thereon, whereby the viscosity of such material is maintained at a predetermined value.
Claim 12
Dependent Claim
131 words
In a method of operating a continuous centrifuge having an upright basket of upwardly divergent inner cross-section bounded by an internal surface of the basket, and an air-colled electromotor above the basket and suspending the same for rotation, the steps of rotating the basket by operating the electromotor with attendent development of heat in the latter; introducing viscous material to be centrifuged into the basket with attendant centrifuging of such material and distribution thereof on the internal surface of the basket when the latter is rotated; and advancing air in a path in which it exchanges heat with the electromotor and thereupon toward and along the internal surface of the basket in heat-exchange relation with the material distributed thereon, whereby the viscosity of such material is maintained at a predetermined value.
Claim 13
Dependent Claim
28 words
In a method as defined in claim 9, wherein the step of advancing comprises discharging the heated cooling air into the smaller-diameter lower end region of said basket.
References Cited (Backward Citations)
US399113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |