Rotor of a dual centrifuge

Patent metadata

Field	Value
Publication number	US-11059007-B2
Application number	US-201515539131-A
Country	US
Kind code	B2
Filing date	Nov 24, 2015
Priority date	Jan 2, 2015
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

The invention relates to a rotor (10) of a dual centrifuge wherein the rotor has a rotor head (12) and an additional rotational mechanism for at least one rotational unit (22) which is provided in the rotor head (12) and comprises a bearing unit (70) and a rotational head (24) that is connected to the bearing unit (70) which is rotatably mounted and can be driven relative to the rotor head (12) by an additional rotational mechanism, an opening (16) for the rotational unit (22) being provided in which the rotational unit is accommodated and by means of which the bearing (70) is arranged such that it is fixed relative to the rotor head (12). The invention is characterized in that the rotational unit (22) has a housing (26) in which the bearing unit (70) is accommodated and in which the rotational head (24) engages, and in that the housing (26) and the rotational head (24) form, with bearing unit (70), a structural unit, the housing (26) being mounted such that it cannot rotate relative to the rotor head (12) and such that it can be detached from the rotor head.

First claim

The invention claimed is:

1. A rotor ( 10 ) of a dual centrifuge, comprising:
a rotor head ( 12 );
a rotational unit ( 22 );
said rotational unit ( 22 ) comprises: a bearing unit ( 70 ); a rotational head ( 24 ) which includes a rotatable shaft ( 25 ); said rotatable shaft ( 25 ) supported by said bearing unit ( 70 ); and, a housing ( 26 );
said bearing unit ( 70 ) is mounted in said housing ( 26 ) and supports said rotatable shaft ( 25 );
said rotational head ( 24 ) includes a wall ( 24 a );
a gear ( 36 ) is affixed to said wall ( 24 a ) of said rotational head ( 24 );
a central gear ( 40 ) affixed to, and driven by, a motor;
said central gear ( 40 ) engages said gear ( 36 ) driving said rotational head ( 24 );
said rotational head ( 24 ) of said rotational unit ( 22 ) is rotatable with respect to said housing ( 26 ) and is driven relative to said rotor head ( 12 ) and said housing ( 26 ) by said central gear ( 40 ) driving said gear ( 36 ) affixed to said wall ( 24 a );
a recess ( 16 ) in said rotor head ( 12 );
said bearing unit ( 70 ) resides in said housing ( 26 );
said housing ( 26 ) resides in, and is removably affixed to, said recess ( 16 ) of said rotor head ( 12 ).

2. A rotor ( 10 ) of a dual centrifuge, comprising:
a rotor head ( 12 );
a rotational unit ( 22 );
a rotational head ( 24 ) includes a wall ( 24 a );
a gear ( 36 ) is affixed to said wall ( 24 a ) of said rotational head ( 24 );
a central gear ( 40 ) affixed to, and driven by, a motor;
said central gear ( 40 ) engages said gear ( 36 ) driving said rotational head ( 24 );
said rotational unit ( 22 ) is provided in said rotor head ( 12 );
said rotational unit ( 22 ) forms a structural unit comprised of: a housing ( 26 ), a bearing unit ( 70 ), said rotational head ( 24 ), and, said rotational head ( 24 ) includes a shaft ( 25 );
said shaft ( 25 ) of said rotational head ( 24 ) engages said bearing unit ( 70 );
said bearing unit ( 70 ) is mounted in said housing ( 26 );
said bearing unit ( 70 ) enabling rotation of said rotational head ( 24 ) relative to said housing ( 26 );
said rotational head ( 24 ) is driven relative to said rotor head ( 12 ) by said central gear ( 40 ) driving said gear ( 36 ) affixed to said wall ( 24 a );
a recess ( 16 ) in said rotor head ( 12 );
said rotational unit ( 22 ) partially resides in said recess ( 16 ) of said rotor head ( 12 );
said housing ( 26 ) of said rotational unit ( 22 ) is fixed to said rotor head ( 12 ); and,
said housing ( 26 ) cannot rotate relative to said rotor head ( 12 ) and is detachable from said rotor head.

3. The rotor ( 10 ) according to claim 2 , further comprising:
said recess ( 16 ) extends through a portion of said rotor head ( 12 );
said rotational unit ( 22 ) is mounted therein and extends through said recess ( 16 ); and,
a lower portion of said housing ( 26 ) of said rotational unit ( 22 ) protrudes from said recess ( 16 ).

4. The rotor ( 10 ) according to claim 3 , further comprising:
said rotor head includes a rotationally symmetrical shape defining an envelope ( 12 A).

5. The rotor ( 10 ) according to claim 4 , further comprising:
said housing ( 26 ) has a height and at least 30% of said height of said housing ( 26 ) protrudes beyond said envelope ( 12 A).

6. The rotor ( 10 ) according to claim 3 , further comprising:
said lower region of said housing ( 26 ) has cooling ribs ( 42 ).

7. The rotor ( 10 ) according to claim 3 , further comprising:
said rotational unit ( 22 ) is securely connected to said rotor head ( 12 ) by a releasable quick fastener or a screw connection.

8. The rotor ( 10 ) according to claim 3 , further comprising:
said housing ( 26 ) has sides, one of said sides includes a plurality of cooling ribs, and on another side of said housing ( 26 ) remote from said side which includes said plurality of cooling ribs ( 42 ), a flange ( 84 ) is provided which bears against said rotor head ( 12 ).

9. The rotor ( 10 ) according to claim 3 , further comprising:
said recess ( 16 ) and said housing ( 26 ) are adapted to each other.

10. The rotor ( 10 ) according to claim 9 , further comprising:
said housing ( 26 ) includes a cross-sectional shape and said recess ( 16 ) includes a cross-sectional shape;
said cross-sectional shape of said housing ( 26 ) and said cross-sectional shape of said recess ( 16 ) prevent rotation, said housing ( 26 ) and said recess ( 16 ) being in a polygonal shape or a cylindrical shape with projections and associated grooves.

11. The rotor ( 10 ) according to claim 3 , further comprising:
a housing cover ( 80 ) with a central bore for said shaft ( 25 ) of said rotational head ( 24 ); and,
said housing ( 26 ) and said housing cover ( 80 ) define a bearing space ( 64 ) for said bearing unit ( 70 ).

12. The rotor ( 10 ) according to claim 11 , further comprising:
said bearing space ( 64 ) is sealed in a lubricant-tight manner.

13. The rotor ( 10 ) according to claim 12 , further comprising:
said bearing space ( 64 ) is filled with lubricant; and,
said lubricant is roller-bearing grease.

14. The rotor ( 10 ) according to claim 12 , further comprising:
said bearing space ( 64 ) is filled with lubricant up to 50% of said height of said bearing space ( 64 ).

15. The rotor ( 10 ) according to claim 3 , further comprising:
said rotational unit ( 22 ) has a wall ( 26 a ); and,
said wall ( 26 a ) of said rotational unit ( 22 ) is in contact with said rotor head ( 12 ) for heat dissipation.

16. A rotational unit ( 22 ) for a rotor, comprising:
a housing ( 26 ), a bearing unit ( 70 ) and a rotational head ( 24 ) form a structural unit;
a rotor head ( 12 ) includes a recess ( 16 ) therein;
said housing ( 26 ) has sides, one of said sides includes a plurality of cooling ribs, and on another side of said housing ( 26 ) remote from said side which includes said plurality of cooling ribs ( 42 ), a flange ( 84 ) is provided which bears against said rotor head ( 12 );
said housing of said structural unit and said structural unit is removably mounted to said rotor head ( 12 );
a gear ( 36 ) is affixed to a wall ( 24 a ) of said rotational head ( 24 );
a central gear ( 40 ) is affixed to, and driven by, a motor;
said central gear ( 40 ) engages said gear ( 36 ) driving said rotational head ( 24 );
said rotational head ( 24 ) of said rotational unit ( 22 ) is rotatable with respect to said housing ( 26 ).

Assignees

• Hettich Andreas Gmbh & Co Kg

Inventors

• Dobos Jovan
• Lenz Anke
• Massing Ulrich
• Eberle Klaus-Guenter

Classifications

• B04B5/02 Primary

  Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls · CPC title

• B01F29/10 Primary

  with receptacles rotated about two different axes, e.g. receptacles having planetary motion · CPC title

• B04B9/12

  Suspending rotary bowls {; Bearings; Packings for bearings} · CPC title

• B01F9/0001 Primary

  Operations & Transport · mapped topic