US5637217.pdf
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USOO5637217A United States Patent [191 Herman et al. 5,637,217 Jun. 10, 1997 [11] Patent Number: [45] Date of Patent: [54] [75] [73] [211 [22] [63] [51] [52] [58] [56] SELF-DRIVEN, CONE-STACK TYPE CENTRIFUGE Inventors: Peter K. Herman; Byron A. Pal-due, both of Cookeville, Tenn. Assignee: Fleetguard, Inc., Nashville. Tenn. Appl. No.: 583,634 Filed: Jan. 5, 1996 Related US. Application Data Continuation-impart of Ser. No. 378,197, Jan. 25, 1995, Pat. No. 5,575,912. Int. Cl.6 ...................................................... .. B04B 1/08 US. Cl. 210/380.1; 210/168; 184/624; 494/68; 494/70; 494fl2; 494/73 Field of Search ...................... .. 184/624; 210/3601, 210/3801, 168, DIG. 17; 494/49, 56, 76, 79, 68. 70. 71. 72, 73, 80, 75 References Cited U.S. PATENT DOCUMENTS 3/1908 Ohlsson. 5/1911 Ohlsson. 10/1911 Bailey ..................................... .. 494/75 9/1912 Lawson. 4/1915 Callanc. 8/1915 Hultet a1. . 7/1917 Kimball. 2/1924 Unger. 12/1930 Be?ine. 2/1936 Riebel, Jr. et a1. . 11/1942 Scott. 1211942 Forsberg. 12/1951 Nyrop ..................................... .. 494/71 1/1954 Harstick. 11/1955 Hein et a1. . 2/1956 Hubmann. 3/1956 Harstick. 6/1956 Kyselka et a1. . 7/1956 Kyselka et a1. . 6/1965 Madany. l/l975 Dudrey. 882,119 993,791 1,006,622 1,038,607 1,136,654 1,151,686 1,232,811 1,482,418 1,784,510 2,031,734 2,302,381 2,305,469 2,578,485 2,665,060 2,725,190 2,735,614 2,738,923 2,752,090 2,755,017 3,187,998 3,858,793 3,990,631 ll/1976 Schall . (List continued on next page.) FOREIGN PATENT DOCUMENTS 444256 l/l949 Italy . OTHER PUBLICATIONS Theodore De Ioggio and Alan Letki, “New Directions in Centrifuging”, Chemical Engineering, pp. 70-76 Jan. 1994. Spinner II, product brochure, T. G. Hudgins, Incorporated 1985. , “Theory of Separation”, Alfa Laval Separation AB, pp. 1-8. Primary Examiner-David A. Reifsnyder Attorney, Agent, or Firm—Woodard, Emhardt, Naughton, Moriarty & McNett [57] A bypass circuit centrifuge for separating particulate matter out of a circulating liquid includes a hollow and generally cylindrical centrifuge bowl which is arranged in combina tion with a base plate so as to de?ne a liquid ?ow chamber. A hollow centertube axially extends up through the base plate into the hollow interior of the centrifuge bowl. The bypass circuit centrifuge is designed so as to be assembled within a cover assembly and a pair of oppositely disposed tangential ?ow nozzles in the base plate are used to spin the centrifuge within the cover so as to cause particles to separate out from the liquid. The interior of the centrifuge bowl includes a plurality of truncated cones which are arranged into a stacked array and are closely spaced so as to enhance the separation e?iciency. The incoming liquid ?ow exits the centertube through a pair of oil inlets and from there is directed into the stacked array of cones. In one embodiment, a top plate in conjunction with ribs on the inside surface of the centrifuge bowl accelerate and direct this ?ow into the upper portion of the stacked array. In another embodiment the stacked array is arranged as part of a disposable subassembly. In each embodiment, as the ?ow passes through the channels created between adjacent cones, particle separation occurs as the liquid continues to ?ow downwardly to the tangential ?ow nozzles. ABSTRACT 30 Claims, 18 Drawing Sheets
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USOO5637217A
United States Patent [191 Herman et al.
5,637,217 Jun. 10, 1997
[11] Patent Number:
[45] Date of Patent:
[54]
[75]
[73]
[211
[22]
[63]
[51] [52]
[58]
[56]
SELF-DRIVEN, CONE-STACK TYPE CENTRIFUGE
Inventors: Peter K. Herman; Byron A. Pal-due, both of Cookeville, Tenn.
Assignee: Fleetguard, Inc., Nashville. Tenn.
Appl. No.: 583,634
Filed: Jan. 5, 1996
Related US. Application Data
Continuation-impart of Ser. No. 378,197, Jan. 25, 1995, Pat. No. 5,575,912.
Int. Cl.6 ...................................................... .. B04B 1/08
US. Cl. 210/380.1; 210/168; 184/624; 494/68; 494/70; 494fl2; 494/73
Field of Search ...................... .. 184/624; 210/3601,
210/3801, 168, DIG. 17; 494/49, 56, 76, 79, 68. 70. 71. 72, 73, 80, 75
References Cited
U.S. PATENT DOCUMENTS
3/1908 Ohlsson. 5/1911 Ohlsson. 10/1911 Bailey ..................................... .. 494/75
9/1912 Lawson. 4/1915 Callanc. 8/1915 Hultet a1. . 7/1917 Kimball. 2/1924 Unger. 12/1930 Be?ine. 2/1936 Riebel, Jr. et a1. . 11/1942 Scott. 1211942 Forsberg. 12/1951 Nyrop ..................................... .. 494/71
1/1954 Harstick. 11/1955 Hein et a1. .
2/1956 Hubmann. 3/1956 Harstick. 6/1956 Kyselka et a1. . 7/1956 Kyselka et a1. . 6/1965 Madany. l/l975 Dudrey.
882,119 993,791
1,006,622 1,038,607 1,136,654 1,151,686 1,232,811 1,482,418 1,784,510 2,031,734 2,302,381 2,305,469 2,578,485 2,665,060 2,725,190 2,735,614 2,738,923 2,752,090 2,755,017 3,187,998 3,858,793
3,990,631 ll/1976 Schall .
(List continued on next page.)
FOREIGN PATENT DOCUMENTS
444256 l/l949 Italy .
OTHER PUBLICATIONS
Theodore De Ioggio and Alan Letki, “New Directions in Centrifuging”, Chemical Engineering, pp. 70-76 Jan. 1994. Spinner II, product brochure, T. G. Hudgins, Incorporated 1985. ,
“Theory of Separation”, Alfa Laval Separation AB, pp. 1-8.
Primary Examiner-David A. Reifsnyder Attorney, Agent, or Firm—Woodard, Emhardt, Naughton, Moriarty & McNett
[57]
A bypass circuit centrifuge for separating particulate matter out of a circulating liquid includes a hollow and generally cylindrical centrifuge bowl which is arranged in combina tion with a base plate so as to de?ne a liquid ?ow chamber. A hollow centertube axially extends up through the base plate into the hollow interior of the centrifuge bowl. The bypass circuit centrifuge is designed so as to be assembled within a cover assembly and a pair of oppositely disposed tangential ?ow nozzles in the base plate are used to spin the centrifuge within the cover so as to cause particles to separate out from the liquid. The interior of the centrifuge bowl includes a plurality of truncated cones which are arranged into a stacked array and are closely spaced so as to enhance the separation e?iciency. The incoming liquid ?ow exits the centertube through a pair of oil inlets and from there is directed into the stacked array of cones. In one embodiment, a top plate in conjunction with ribs on the inside surface of the centrifuge bowl accelerate and direct this ?ow into the upper portion of the stacked array. In another embodiment the stacked array is arranged as part of a disposable subassembly. In each embodiment, as the ?ow passes through the channels created between adjacent cones, particle separation occurs as the liquid continues to ?ow downwardly to the tangential ?ow nozzles.
ABSTRACT
30 Claims, 18 Drawing Sheets
4,067,494 4,106,689 4,288,030 4,325,825 4,400,167 4,427,407
U.S. PATENT DOCUMENTS
1/1978 8/1978 9/1981 4/1982 8/1983 1/1984
Wlllus et a1. .
Kozulla .
Beazley et a1. . Schutte .
Beazley et a1. . Paschedag .
5,637,217 Page 2
4,460,352 4,787,975 4,915,682 4,961,724 5,045,049 5,052,996
7/1984
11/1988
4/1990
10/1990 9/1991
10/1991
Bruning .
Purvey .
Stoucken .
Paoe .
Lantz .
Lantz .
US. Patent Jun. 10, 1997 Sheet 1 of 18 5,637,217
I
,1 ..
1 FIG (PRIOR ART)
US. Patent Jun. 10, 1997 Sheet 3 of 18 5,637,217
US. Patent Jun. 10, 1997 Sheet 4 of 18 5,637,217
460
A 4
FIG. 3A
Mm%\\ \\\\\ \\\\\\\ A
FIG. 4A
US. Patent Jun. 10,1997 Sheet 5 of 18 5,637,217
' 47
/as 52 /
1|! PM”
///
FIG. 6
52
US. Patent Jun. 10, 1997 Sheet 6 of 18 5,637,217
FIG. 8 (PRIOR ART)
US. Patent Jun. 10, 1997 Sheet 7 of 18 5,637,217
US. Patent Jun. 10, 1997 Sheet 8 of 18 5,637,217
188 160
1 87
1 900
183 1 880
207
200
177
165 164
167
163
172 174
FIG. 11
US. Patent Jun. 10, 1997 Sheet 9 of 18 5,637,217
6 8 All
206
209
21 1
207
208
228
FIG. 12
US. Patent Jun. 10, 1997 Sheet 10 of 18 5,637,217
FIG. 13
US. Patent Jun. 10, 1997 Sheet 11 of 18 5,637,217
FIG. 14
US. Patent Jun. 10, 1997 Sheet 12 of 18 5,637,217
FIG. 15
US. Patent Jun. 10,1997 ’ Sheet 13 of 18 5,637,217
Sheet 14 of 18 5,637,217 Jun. 10, 1997 US. Patent
208
FIG. 18
US. Patent Jun. 10, 1997 Sheet 15 of 18 5,637,217
US. Patent Jun. 10, 1997 Sheet 16 of 18 5,637,217
FIG. 21
FIG. 22
US. Patent Jun. 10, 1997 Sheet 17 of 18 5,637,217
248 257
/ '///{///
257
FIG. 21A
US. Patent Jun. 10, 1997 Sheet 18 of 18 5,637,217
274
273 270
\ 271
2720
272
272
FIG. 23
