EP2335830A1 - Centrifugeuse de laboratoire dotée d'un refroidissement par compresseur - Google Patents

Centrifugeuse de laboratoire dotée d'un refroidissement par compresseur Download PDF

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Publication number
EP2335830A1
EP2335830A1 EP09015628A EP09015628A EP2335830A1 EP 2335830 A1 EP2335830 A1 EP 2335830A1 EP 09015628 A EP09015628 A EP 09015628A EP 09015628 A EP09015628 A EP 09015628A EP 2335830 A1 EP2335830 A1 EP 2335830A1
Authority
EP
European Patent Office
Prior art keywords
compressor
centrifuge
laboratory
laboratory centrifuge
compressors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09015628A
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German (de)
English (en)
Other versions
EP2335830B2 (fr
EP2335830B1 (fr
Inventor
Andreas Heilmann
Heiko Müller
Kai Marschner
Bert-Olaf Grimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eppendorf SE
Original Assignee
Eppendorf SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Application filed by Eppendorf SE filed Critical Eppendorf SE
Priority to EP09015628.2A priority Critical patent/EP2335830B2/fr
Priority to CN201010595829.2A priority patent/CN102166546B/zh
Publication of EP2335830A1 publication Critical patent/EP2335830A1/fr
Application granted granted Critical
Publication of EP2335830B1 publication Critical patent/EP2335830B1/fr
Publication of EP2335830B2 publication Critical patent/EP2335830B2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/02—Other accessories for centrifuges for cooling, heating, or heat insulating

Definitions

  • the present invention relates to a laboratory centrifuge according to the preamble of claim 1.
  • Such laboratory centrifuges are used in biological, chemical and medical laboratories for the separation of various constituents in a liquid or for the separation of solids from a liquid. For this purpose, the centrifugal force acting differently on different masses is used.
  • centrifuges In currently used laboratory centrifuges, rotational speeds of up to 16,000 revolutions per minute are usually generated, whereby forces of up to approximately 21 x 9.81 m / s 2 are achieved. However, it has been found that in such centrifuges no complete or satisfactory demixing of the sample liquid can be achieved. Centrifuges are currently being planned in which demixing is to be improved by higher rotational speeds of up to 25,000 revolutions per minute.
  • the heat thus generated causes a strong heating of the centrifuged samples without appropriate countermeasures, which can easily lead to their destruction or uselessness.
  • the samples must be kept at defined temperatures, for example, depending on the application to temperatures of 4 ° C, 22 ° C or 37 ° C.
  • the object of the present invention is to provide laboratory centrifuges that allow better separation, ie a higher rate of separation of the centrifuged samples.
  • the inventors have surprisingly discovered that the rates of segregation of the centrifuged samples can be increased by using rotary compressors for active cooling within the laboratory centrifuge.
  • Compressors are preferably used as rotary compressors for the laboratory centrifuge according to the invention, in which the compressor is a rotary compressor, scroll compressor, vane compressor, swash plate compressor, screw compressor, scroll compressor, rotary compressor or the like.
  • the compressor is a rotary compressor, scroll compressor, vane compressor, swash plate compressor, screw compressor, scroll compressor, rotary compressor or the like.
  • scroll-type compressors and scroll compressors are preferred.
  • laboratory centrifuges are very small compared to refrigerators, which means that all components must be housed in a very limited space:
  • laboratory centrifuges with the very fast moving rotor on a moving part which must be operated as possible uninfluenced by other components despite this limited space
  • laboratory centrifuges must cover a very wide temperature range, with frequent temperature changes having to be realized at high lowering speeds.
  • rotary compressors are now available which, with the same dimensions with respect to a reciprocating compressor, provide at least the same compression performance so that the dimensions of the laboratory centrifuge do not increase when used.
  • the starting currents can also be reduced with the specified rotary compressors.
  • certain laboratory centrifuges have not been sold in some countries, such as the USA, because of the 110V AC power grid used there, as current spikes generated by powerful reciprocating compressors would jeopardize the stability of the power grids commonly used in these countries.
  • certain controls had to be provided in the laboratory centrifuges, which ensure that the compressor is only controlled in such a way that the starting currents do not exceed the legally required values.
  • rotary compressors can be dispensed with such controls, so that the laboratory centrifuges are simple and thus more robust and cheaper and their sale is also permitted in these countries.
  • the rotary compressor is an electrically driven compressor (direct and / or alternating current).
  • Such compressors can be very compact and high-torque build and their control is independent of the mains voltage via a regulated switching power supply or frequency converter possible.
  • smaller compressions can be made easier with such compressors.
  • the compressors can be made smaller overall and with less power, so that the usable space in a laboratory centrifuge space can be better used, whereby a total of the required construction volume of such a laboratory centrifuge drops.
  • the laboratory centrifuge according to the invention can be carried out particularly advantageously as a laboratory bench centrifuge and microliter centrifuge and the like, since it is particularly important for these types of centrifuge to have a very compact design.
  • the laboratory centrifuge has a backmixing rate of less than or equal to 20%, preferably less than or equal to 17%, in particular less than or equal to 14%. Then the segregation rate is particularly high.
  • Fig. 1 is purely schematically illustrated the laboratory centrifuge 1 according to the invention in a preferred embodiment.
  • This laboratory centrifuge 1 has a housing 2 and a centrifuge lid 3.
  • the centrifuge lid 3 is designed to close a centrifuge container 4, in which a rotor 5 is arranged.
  • the rotor 5 is drivable by a motor (not shown), whereby samples (not shown) arranged on the rotor 5 can be centrifuged to separate them.
  • the laboratory centrifuge 1 has an active cooling device which comprises a compressor 6.
  • the compressor 6 is designed as a rotary compressor and has a rotary piston compressor. In the area of the compressor 6, the top of the housing 2 is not shown.
  • This compressor 6 is very compact and high-torque and its control is possible via a regulated switching power supply regardless of the mains voltage. With the help of this compressor 6, smaller power gradations of the cooling capacity can be easily.
  • FIG. 2 is shown purely schematically a laboratory centrifuge 10, as is prior art.
  • This laboratory centrifuge 10 differs from the laboratory centrifuge 1 according to the invention in that a compressor 11 with a reciprocating compressor is used as the compressor 11. All other parts are therefore provided with the same reference numerals as in the laboratory centrifuge according to the invention.
  • the pipette Eppendorf Reference 500 - 2500 ⁇ l was used for pipetting (Model SN 475116) and the pipette Eppendorf Research pro 5 - 100 ⁇ l (model SN 022760).
  • an Eppendorf biophotometer model SN 6131 00197 was used.
  • the samples were placed in 2.0 ml Safe-Lock tubes (model U123342P 2243) and a 10 mM Tris solution and a salt concentrate color solution with a density of 1.2 g / ml were used to prepare the samples.
  • 1450 ⁇ l of Tris solution were pipetted into a 2.0 ml Safe-Lock vessel with the Eppendorf Reference pipette.
  • the pipette Eppendorf Research pro was then underlaid with 50 ⁇ l of the salt concentrate dye solution with the pipette set to the lowest aspiration and dilution level.
  • the underlaid 50 ⁇ l salt concentrate color solution was removed from the tubes with the Eppendorf Research pro pipette. Thereafter, the vessels were closed again and mixed vigorously. The liquid contained in the vessels was then in each case transferred to a cuvette and measured photometrically at an extinction of 562 nm.
  • the values obtained with the positive control tubes serve as maximum values (100% value) and the values obtained in the negative control as background (diffusion).

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  • Centrifugal Separators (AREA)
EP09015628.2A 2009-12-17 2009-12-17 Centrifugeuse de laboratoire dotée d'un refroidissement par compresseur Active EP2335830B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09015628.2A EP2335830B2 (fr) 2009-12-17 2009-12-17 Centrifugeuse de laboratoire dotée d'un refroidissement par compresseur
CN201010595829.2A CN102166546B (zh) 2009-12-17 2010-12-16 采用压缩机冷却的实验室离心机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09015628.2A EP2335830B2 (fr) 2009-12-17 2009-12-17 Centrifugeuse de laboratoire dotée d'un refroidissement par compresseur

Publications (3)

Publication Number Publication Date
EP2335830A1 true EP2335830A1 (fr) 2011-06-22
EP2335830B1 EP2335830B1 (fr) 2013-03-27
EP2335830B2 EP2335830B2 (fr) 2020-11-11

Family

ID=42133502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015628.2A Active EP2335830B2 (fr) 2009-12-17 2009-12-17 Centrifugeuse de laboratoire dotée d'un refroidissement par compresseur

Country Status (2)

Country Link
EP (1) EP2335830B2 (fr)
CN (1) CN102166546B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013004850U1 (de) * 2013-05-27 2013-06-05 Thermo Electron Led Gmbh Laborzentrifuge mit gedämmtem Kompressor
WO2015176841A1 (fr) * 2014-05-23 2015-11-26 Andreas Hettich Gmbh & Co. Kg Centrifugeuse
DE102020119438A1 (de) 2020-07-23 2022-01-27 Andreas Hettich Gmbh & Co. Kg Zentrifuge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816449A1 (de) * 1978-04-15 1979-10-18 Heraeus Christ Gmbh Zentrifuge, insbesondere laborzentrifuge mit gekuehlter rotorkammer
JPS5617956U (fr) * 1979-07-18 1981-02-17
EP1196247B1 (fr) * 1999-07-16 2003-04-23 Eppendorf Ag Centrifugeuse de laboratoire a groupe frigorifique

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH180152A (de) † 1952-01-18 1935-10-15 Bosch Robert Ag Rollkolbenverdichter.
US4053104A (en) † 1976-02-23 1977-10-11 Beckman Instruments, Inc. Self cooling table top centrifuge
JPH05228400A (ja) † 1992-02-19 1993-09-07 Hitachi Koki Co Ltd 遠心機の冷却制御装置
US5221191A (en) † 1992-04-29 1993-06-22 Carrier Corporation Horizontal rotary compressor
JPH062678A (ja) † 1992-06-22 1994-01-11 Mitsubishi Electric Corp 密閉型回転圧縮機
JP3596306B2 (ja) * 1998-09-25 2004-12-02 日立工機株式会社 遠心分離機
KR100519311B1 (ko) † 2003-06-11 2005-10-07 엘지전자 주식회사 로터리 압축기
KR100519312B1 (ko) † 2003-06-11 2005-10-07 엘지전자 주식회사 로터리 압축기
KR20050066352A (ko) † 2003-12-26 2005-06-30 삼성전자주식회사 냉동사이클 장치
JP2005230746A (ja) * 2004-02-20 2005-09-02 Hitachi Koki Co Ltd 遠心分離機
CN2844510Y (zh) * 2005-10-21 2006-12-06 乐金电子(天津)电器有限公司 旋转式压缩机
TWI414364B (zh) * 2007-12-21 2013-11-11 Alfa Wassermann Inc 連續流超離心系統
CN201216967Y (zh) * 2008-06-20 2009-04-08 上海力申科学仪器有限公司 离心通风降温结构
CN101455999B (zh) * 2008-12-26 2012-10-31 上海力申科学仪器有限公司 一种台式高速离心机

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816449A1 (de) * 1978-04-15 1979-10-18 Heraeus Christ Gmbh Zentrifuge, insbesondere laborzentrifuge mit gekuehlter rotorkammer
JPS5617956U (fr) * 1979-07-18 1981-02-17
EP1196247B1 (fr) * 1999-07-16 2003-04-23 Eppendorf Ag Centrifugeuse de laboratoire a groupe frigorifique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013004850U1 (de) * 2013-05-27 2013-06-05 Thermo Electron Led Gmbh Laborzentrifuge mit gedämmtem Kompressor
US20140349827A1 (en) * 2013-05-27 2014-11-27 Thermo Electron Led Gmbh Laboratory centrifuge having insulated compressor
US10195616B2 (en) * 2013-05-27 2019-02-05 Thermo Electron Led Gmbh Laboratory centrifuge having insulated compressor
WO2015176841A1 (fr) * 2014-05-23 2015-11-26 Andreas Hettich Gmbh & Co. Kg Centrifugeuse
US10894260B2 (en) 2014-05-23 2021-01-19 Andreas Hettich Gmbh & Co. Kg Centrifuge refrigeration via magnetocaloric system
DE102020119438A1 (de) 2020-07-23 2022-01-27 Andreas Hettich Gmbh & Co. Kg Zentrifuge

Also Published As

Publication number Publication date
EP2335830B2 (fr) 2020-11-11
CN102166546B (zh) 2015-11-25
CN102166546A (zh) 2011-08-31
EP2335830B1 (fr) 2013-03-27

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