GB985715A - Improvements in and relating to centrifuges - Google Patents

Improvements in and relating to centrifuges

Info

Publication number
GB985715A
GB985715A GB1677163A GB1677163A GB985715A GB 985715 A GB985715 A GB 985715A GB 1677163 A GB1677163 A GB 1677163A GB 1677163 A GB1677163 A GB 1677163A GB 985715 A GB985715 A GB 985715A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
rotor
temperature
chamber
means
peltier elements
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
GB1677163A
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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B21/00Machines, plant, or systems, using electric or magnetic effects
    • F25B21/02Machines, plant, or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • F25B21/04Machines, plant, or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect reversible
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B15/00Other accessories for centrifuges
    • B04B15/02Other accessories for centrifuges for cooling, heating, or heat insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B5/00Other centrifuges
    • B04B5/04Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B5/0414Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
    • B04B5/0421Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes pivotably mounted

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.
GB1677163A 1962-05-12 1963-04-29 Improvements in and relating to centrifuges Expired GB985715A (en)

Priority Applications (1)

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

Publications (1)

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

Family

ID=7018248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1677163A 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 (24)

* 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 UHV
DE1816936B2 (en) * 1968-12-24 1972-12-21 Device for the simultaneous transmission of several signals from a temporarily rotating machine part to a stationary 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 Boelkow Blohm 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
US4512758A (en) * 1984-04-30 1985-04-23 Beckman Instruments, Inc. Thermoelectric temperature control assembly for centrifuges
EP0335475B1 (en) * 1984-04-30 1994-05-04 Beckman Instruments, Inc. Centrifuge including improved thermoelectric temperature control assembly
NL8503149A (en) * 1985-11-15 1987-06-01 Ultra Centrifuge Nederland Nv Centrifuge, particularly 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
US4785637A (en) * 1987-05-22 1988-11-22 Beckman Instruments, Inc. Thermoelectric cooling design
US4917179A (en) * 1987-05-22 1990-04-17 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 to device shutter covers a centrifuge 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 Standing centrifuge in modular construction

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 (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

Also Published As

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

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