Source: http://www.google.com/patents/US7794383?dq=6,073,142
Timestamp: 2016-07-31 10:08:41
Document Index: 303974309

Matched Legal Cases: ['art 210', 'art 211', 'art 211', 'art 210', 'art 210', 'art 210', 'art 210', 'art 212', 'art 212', 'art 212', 'art 210', 'art 210', 'art 210', 'art 203']

Patent US7794383 - Centrifugal separator with isolated rotor part - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA centrifugal separator includes a rotator part that separates a liquid sample and has a rotor and a drive part. The rotor receives a liquid sample therein and rotates to separate the liquid sample. The drive part drives the rotor to rotate. A controller part controls operations of the rotator part which...http://www.google.com/patents/US7794383?utm_source=gb-gplus-sharePatent US7794383 - Centrifugal separator with isolated rotor partAdvanced Patent SearchPublication numberUS7794383 B2Publication typeGrantApplication numberUS 12/141,156Publication dateSep 14, 2010Priority dateOct 17, 2003Fee statusPaidAlso published asUS7396324, US20050107235, US20080251436Publication number12141156, 141156, US 7794383 B2, US 7794383B2, US-B2-7794383, US7794383 B2, US7794383B2InventorsKenichi Tetsu, Masaharu Aizawa, Katsunori Akatsu, Yoshinori Tobita, Yukiyoshi MaeharaOriginal AssigneeHitachi Koki Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (59), Non-Patent Citations (1), Referenced by (18), Classifications (16), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetCentrifugal separator with isolated rotor part
US 7794383 B2Abstract
11. The centrifugal separator according to claim 10, wherein the control part is connected via a drive wire to the drive part and the drive wire passes through a wall of the clean room via an air-tight sealing mechanism. Description
As shown in FIG. 3( b), each first hermetic seal connector 272B is mounted on the first plate member 272A on its controller room 209 side. The first hermetic seal connector 272B is located on a corresponding first through-hole 272 a. The first hermetic seal connector 272B is mounted on the first plate member 272A, with an O-ring or the like (not shown) being inserted between the first hermetic seal connector 272B and the first plate member 272A. Accordingly, it is possible to prevent passage of air between the controller room 209 and the space within the through-hole 207 a. Similarly, each second hermetic seal connector 273B is mounted on the second plate member 273A on its rotator room 208 side. The second hermetic seal connector 273B is located on a corresponding second through-hole 273 a. The second hermetic seal connector 273B is mounted on the second plate member 273A, with an O-ring or the like (not shown) being inserted between the second hermetic seal connector 273B and the second plate member 273A. Accordingly, it is possible to prevent passage of air between the rotator room 208 and the space within the through-hole 207 a. It is noted that FIG. 3( b) illustrates a section in an upper half of the first hermetic seal connector 272B and an upper half of the second hermetic seal connector 273B. As shown in FIG. 3( b), each hermetic seal connector 272B, 273B has a main plate, through which a plurality of pins are inserted via a hermetic glass seal material. Thus, each hermetic seal connector 272B, 273B serves as a male or plug connector. For example, a connector in “HMS02 series” (model name), such as a connector “HMS02-24-28P11” (model name) or a “HMS02-18-11” (model name), manufactured by Daitron Technology Co., Ltd. can be employed as each hermetic seal connector 272B, 273B.
The chamber part 210 includes a cylindrical wall 210B defining a chamber 210 a therein. The wall 210B is fixed to the support part 211 by second bolts 210A. The support part 211 forms a hermetic seal on the bottom side of the chamber 210 a. The cylindrical rotor 214 is mounted in the chamber part 210. The cylindrical rotor 214 is for receiving therein the liquid sample. The lower rotating shaft 222 and an upper rotating shaft 221 are fixed to the rotor 214. The lower rotating shaft 222 extends downwardly from the rotor 214. The upper rotating shaft 221 extends upwardly from the rotor 214. The upper and lower rotating shafts 221 and 222 extend along a rotational axis of the rotor 214. When the rotor 214 rotates around the rotational axis, components in the liquid sample are separated. The rotor 214 is mounted inside the chamber part 210, with the lower rotating shaft 222 extending out of the chamber part 210 into the supporting unit 220 and the upper rotating shaft 221 extending out of the chamber part 210 into the drive part 212.
A second rotor channel 214 b is formed in the top center of the rotor 214 for discharging the liquid sample therethrough. An upper rotating shaft 221 is fixed on the top side of the rotor 214 and extends upwardly to the drive part 212. An upper channel 221 a is formed in the center of the upper rotating shaft 221 along the axis thereof and is in fluid communication with the second rotor channel 214 b. A cooling coil 215 for supplying a refrigerant to cool the rotor 214 is provided on the outer side of the rotor 214 along the axis thereof. A protective wall 216 is provided on the outside of the cooling coil 215 along the axis thereof.
Hence, a channel for the liquid sample is formed from the first connector 227A to the second connector 226A via the first connecting channel 227 a, lower channel 222 a, first rotor channel 214 a, rotor 214, second rotor channel 214 b, upper channel 221 a, and second connecting channel 226 a. The rotor 214, upper rotating shaft 221, and lower rotating shaft 222 integrally rotate by the driving force of the drive part 212, which operates according to conditions set by the first control panel 231A or the second control panel 252. The liquid sample is injected through the first connector 227A and introduced into the rotor 214 via the first connecting channel 227 a and the lower channel 222 a. The liquid sample is subjected to a centrifugal force in the rotor 214 that separates components in the liquid sample. While the rotor 214 is rotating to subject the liquid sample to the centrifugal force, a supernatant liquid is produced and discharged via the second rotor channel 214 b, upper channel 221 a, second connecting channel 226 a, and the second connector 226A. The rotor 214 is then halted, and the liquid sample, whose components have been separated from one another, is collected through the first connector 227A. It is noted that the sample liquid can be injected into the rotor 214 through the first connector 227A even while the rotor 214 is rotating.
The decompression pump 235 draws air out of the chamber 210 a via a first decompression pipe 243-1 to create a decompressed state in the chamber 210 a. At the same time, a first oil tank 260 described later provided in the rotator room 208 is decompressed via a second decompression pipe 243-2. The filter 254 described above is provided on the rotator room 208 side of the first decompression pipe 243-1. When breakage of the rotor 214 or separation of the rotor 214 from the upper or lower rotating shaft 221, 222 occurs in the chamber part 210, the filter 254 traps liquid sample that has been sprayed inside the chamber part 210 and sucked out by the decompression pump 235, preventing the liquid sample from entering the controller room 209. A solenoid valve 237 is disposed on the first decompression pipe 243-1 near the chamber part 210 for introducing air into the chamber 210 a. An emergency stop valve 253 c is provided on the rotator room 208 side of the first decompression pipe 243-1. The emergency stop valve 253 c is controlled by the controller part 203 to automatically close when breakage of the rotor 214 or separation of the rotor 214 from the upper or lower rotating shaft 221, 222 occurs. The emergency stop valve 253 c automatically closes when the power supplied thereto is shut down. Accordingly, even if liquid sample leaks out of the rotor 214 and enters the first decompression pipe 243-1, the emergency stop valve 253 c can prevent air containing this liquid sample from flowing from the rotator room 208 to the controller room 209, thereby improving the operating safety of the centrifugal separator.
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B04B5/0442, B04B5/0414, B04B13/00European ClassificationB04B15/02, B04B5/04B2, B04B13/00, B04B5/04CLegal EventsDateCodeEventDescriptionFeb 12, 2014FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services