GB985715A - Improvements in and relating to centrifuges - Google Patents

Improvements in and relating to centrifuges

Info

Publication number
GB985715A
GB985715A GB16771/63A GB1677163A GB985715A GB 985715 A GB985715 A GB 985715A GB 16771/63 A GB16771/63 A GB 16771/63A GB 1677163 A GB1677163 A GB 1677163A GB 985715 A GB985715 A GB 985715A
Authority
GB
United Kingdom
Prior art keywords
rotor
temperature
chamber
peltier elements
electrical
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.)
Expired
Application number
GB16771/63A
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.)
MARTIN CHRIST
Original Assignee
MARTIN CHRIST
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.)
Filing date
Publication date
Application filed by MARTIN CHRIST filed Critical MARTIN CHRIST
Publication of GB985715A publication Critical patent/GB985715A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • F25B21/04—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect reversible
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
    • B04B5/0421—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes pivotably mounted

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Centrifugal Separators (AREA)
  • Control Of Temperature (AREA)

Abstract

985,715. Centrifugal separators. M. CHRIST, [trading as MARTIN CHRIST FABRIK ELEKTRO-MEDIZINISCHER APPARATE]. April 29, 1963 [May 12, 1962], No. 16771/63. Heading B2P. [Also in Division G3] In a centrifuge comprising a housing 1 defining a chamber containing a rotor 16, 17 and adapted to be evacuated during the rotor operation, the temperature of the rotor is sensed by means of a temperature-sensitive element 21 connected to an electrical circuit on the rotor so that, upon a variation occurring in the rotor temperature, the element 21 causes a variation in the flow of electrical current in the electrical circuit to provide an output signal to which is responsive an electrical control circuit which controls the flow of electric current through Peltier elements 26 arranged around the rotor so as to maintain the temperature of the latter sensibly constant. The element 21 is in the form of a thermistor located in a hollow shaft 15 at the end of a driving shaft 13 and on which are secured the rotor parts 16, 17 of different shape and provided with tumblers 19, 20 respectively fixed and pivotable with respect to the rotor axis during operation. The thermistor 21 is electrically connected to a coil 22 fixed to the shaft 13 and inductively coupled to a stationary coil 23 having terminals 24. The signal from the coil 23 is converted to a unidirectional voltage and compared with a stabilized potential in a control bridge, Fig. 2, whose output is connected via a reversing push-button switch, an amplifier and electrical leads 30 to the Peltier elements 26 so as to heat or cool the chamber. The Peltier elements are circumferentially distributed around a metal mantle 25 enclosing the rotors 16, 17 and are associated with cooling liquid jackets 27. The chamber is evacuated by means of a vacuum pump connected at 2 and is closed by a cover 3 which, during opening or closing by means of a chain 8, sprockets 9, 10 and a servomotor 11, slides on rails 6 by means of rollers 5. To open the cover the servomotor is energized through a delay circuit by depressing the push-button of the switch. This interrupts the connection through the switch from the control bridge to the amplifier which is simultaneously put into connection with a dew point detector which, should the dew point of the ambient air be above the temperature of the centrifuge chamber, delivers an output signal to the amplifier. The latter responds to the signal by passing current through the Peltier elements in such a direction that they cause the temperature inside the chamber to be raised above the dew point of the ambient air. The delay period of the delay circuit is sufficient to allow this action to take place before the cover is opened.
GB16771/63A 1962-05-12 1963-04-29 Improvements in and relating to centrifuges Expired GB985715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC0026974 1962-05-12

Publications (1)

Publication Number Publication Date
GB985715A true GB985715A (en) 1965-03-10

Family

ID=7018248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16771/63A Expired GB985715A (en) 1962-05-12 1963-04-29 Improvements in and relating to centrifuges

Country Status (2)

Country Link
US (1) US3347453A (en)
GB (1) GB985715A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525114U (en) * 1978-08-03 1980-02-18
JPS5735854U (en) * 1980-08-09 1982-02-25
WO2018053026A1 (en) * 2016-09-15 2018-03-22 Beckman Coulter, Inc. Thermal regulation of rotors during centrifugation

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391862A (en) * 1965-11-05 1968-07-09 Beckman Instruments Inc Door mechanism for centrifuge vacuum chamber
US3409212A (en) * 1966-07-14 1968-11-05 Beckman Instrumetns Inc Apparatus for controllling centrifuge rotor temperature
FR1538390A (en) * 1967-06-27 1968-09-06 Alcatel Sa Large diameter valve for ultra high vacuum
DE1816936B2 (en) * 1968-12-24 1972-12-21 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal DEVICE FOR THE SIMULTANEOUS TRANSMISSION OF SEVERAL SIGNALS FROM A TEMPORARILY RUNNING MACHINE PART TO A FIXED PART
US3600900A (en) * 1969-11-03 1971-08-24 North American Rockwell Temperature controlled centrifuge
US3860166A (en) * 1972-04-18 1975-01-14 Anderson Lab Inc Apparatus for separating moisture from solids
US4054243A (en) * 1974-10-08 1977-10-18 Gennady Ivanovich Volkov Preparation-making ultracentrifuge
DE2450482C1 (en) * 1974-10-24 1985-10-31 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Heated centrifuge
US4063721A (en) * 1975-09-18 1977-12-20 Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung Method for the separation of segregations and impurities from material mixtures by centrifuging and equipment for the execution of the method
EP0015047A1 (en) * 1979-02-21 1980-09-03 FISONS plc Centrifuge assembly
EP0335475B1 (en) * 1984-04-30 1994-05-04 Beckman Instruments, Inc. Centrifuge including improved thermoelectric temperature control assembly
US4512758A (en) * 1984-04-30 1985-04-23 Beckman Instruments, Inc. Thermoelectric temperature control assembly for centrifuges
NL8503149A (en) * 1985-11-15 1987-06-01 Ultra Centrifuge Nederland Nv CENTRIFUGE, ESPECIALLY FOR BIOMEDICAL APPLICATIONS.
US4764162A (en) * 1986-11-03 1988-08-16 E. I. Du Pont De Nemours And Company Removable door seal assembly for a centrifuge
US4833891A (en) * 1987-05-22 1989-05-30 Beckman Instruments, Inc. Rotor temperature control and calibration
US4917179A (en) * 1987-05-22 1990-04-17 Beckman Instruments, Inc. Thermoelectric cooling design
US4785637A (en) * 1987-05-22 1988-11-22 Beckman Instruments, Inc. Thermoelectric cooling design
US4913696A (en) * 1987-12-21 1990-04-03 E. I. Du Pont De Nemours And Company Support arrangement for a temperature sensor
US4857811A (en) * 1988-03-31 1989-08-15 E. I. Du Pont De Nemours And Company Evacuation pump control for a centrifuge instrument
US5069413A (en) * 1988-04-11 1991-12-03 E. I. Du Pont De Nemours And Company Centrifuge motor mount having two slotted members
FR2644366B1 (en) * 1989-03-17 1991-06-14 Jouan IMPROVEMENT ON THE SHUTTER COVERS OF APPARATUS WITH CENTRIFUGATION ROTORS
DE4014451C1 (en) * 1990-05-05 1991-06-13 Heraeus Sepatech Gmbh, 3360 Osterode, De
JP4720689B2 (en) * 2006-09-05 2011-07-13 日立工機株式会社 Centrifuge
DE102012021986B4 (en) 2012-11-07 2015-12-31 Thermo Electron Led Gmbh Stand centrifuge in modular design
DE102014107294B4 (en) * 2014-05-23 2017-02-09 Andreas Hettich Gmbh & Co. Kg centrifuge
DE102014223544A1 (en) * 2014-11-18 2016-05-19 Sauer Gmbh Spindle device and machine tool with spindle device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885188A (en) * 1956-03-14 1959-05-05 Beckman Instruments Inc Centrifuge apparatus
US3174291A (en) * 1959-05-11 1965-03-23 Whirlpool Co Temperature regulating apparatus
US3129174A (en) * 1959-11-13 1964-04-14 Beckman Instruments Inc Continuous flow type centrifuge and fluid temperature control therefor
US3019609A (en) * 1960-12-21 1962-02-06 Gen Electric Thermoelectric air conditioning arrangement
US3096624A (en) * 1961-11-22 1963-07-09 Charos Peter Thermoelectric cooler arrangement for roller mixer freezers
US3202348A (en) * 1962-12-05 1965-08-24 Martin Christ Centrifuge having an improved centrifuge cell

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525114U (en) * 1978-08-03 1980-02-18
JPS5735854U (en) * 1980-08-09 1982-02-25
WO2018053026A1 (en) * 2016-09-15 2018-03-22 Beckman Coulter, Inc. Thermal regulation of rotors during centrifugation
CN109862966A (en) * 2016-09-15 2019-06-07 拜克门寇尔特公司 The thermal conditioning of rotor in centrifugal process
EP4008439A1 (en) * 2016-09-15 2022-06-08 Beckman Coulter, Inc. Thermal regulation of rotors during centrifugation
CN109862966B (en) * 2016-09-15 2022-12-20 拜克门寇尔特公司 Thermal conditioning of rotors during centrifugation
US11660617B2 (en) * 2016-09-15 2023-05-30 Beckman Coulter, Inc. Thermal regulation of rotors during centrifugation

Also Published As

Publication number Publication date
US3347453A (en) 1967-10-17

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