EP0313444A3 - Device for detecting the unbalance of a rotating machine when exceeding a predetermined threshold - Google Patents

Device for detecting the unbalance of a rotating machine when exceeding a predetermined threshold Download PDF

Info

Publication number
EP0313444A3
EP0313444A3 EP19880402601 EP88402601A EP0313444A3 EP 0313444 A3 EP0313444 A3 EP 0313444A3 EP 19880402601 EP19880402601 EP 19880402601 EP 88402601 A EP88402601 A EP 88402601A EP 0313444 A3 EP0313444 A3 EP 0313444A3
Authority
EP
European Patent Office
Prior art keywords
rotating machine
pendulum
ring
unbalance
casing
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.)
Withdrawn
Application number
EP19880402601
Other languages
German (de)
French (fr)
Other versions
EP0313444A2 (en
Inventor
Michel Serveau
Jean-Louis Fondin
Alain Dreno
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.)
Jouan SA
Original Assignee
Jouan SA
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 Jouan SA filed Critical Jouan SA
Publication of EP0313444A2 publication Critical patent/EP0313444A2/en
Publication of EP0313444A3 publication Critical patent/EP0313444A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/14—Balancing rotary bowls ; Schrappers
    • B04B9/146—Unbalance detection devices

Landscapes

  • Testing Of Balance (AREA)

Abstract

La présente invention concerne un dispositif de détec­ tion du balourd d'une machine tournante, à partir d'un seuil prédéterminé. Ce dispositif est constitué par un pendule formé d'une tige verticale (66) en un métal déformable élas­ tiquement, dont l'extrémité supérieure est encastrée dans un support isolant (62), rigidement solidaire du carter (42) de la machine tournante et qui porte à son extrémité inférieure une masse métallique (68), celle-ci étant reçue concentrique­ ment et avec un jeu périphérique prédéterminé à l'intérieur d'une bague métallique (70) également solidaire du carter et isolée électriquement par rapport à ce dernier, ladite bague et ladite extrémité encastrée du pendule étant reliées élec­ triquement à un circuit électrique d'alarme ou de sécurité qui se ferme dès que la masse (68) vient en contact avec la bague (70), la fréquence de résonance du pendule étant infé­ rieure à celle des parties de la machine tournante soumises au balourd. The present invention relates to a detection device unbalance of a rotating machine, from a threshold predetermined. This device consists of a pendulum formed of a vertical rod (66) made of a deformable metal tick, the upper end of which is embedded in a insulating support (62), rigidly secured to the casing (42) of the rotating machine and which carries at its lower end a metallic mass (68), this being received concentrically ment and with a predetermined peripheral clearance inside a metal ring (70) also integral with the casing and electrically insulated from the latter, said ring and said embedded end of the pendulum being electrically connected three times to an electrical alarm or security circuit which closes as soon as the mass (68) comes into contact with the ring (70), the resonance frequency of the pendulum being lower lower than that of the parts of the rotary machine subjected unbalanced.

EP19880402601 1987-10-22 1988-10-13 Device for detecting the unbalance of a rotating machine when exceeding a predetermined threshold Withdrawn EP0313444A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8714612A FR2622290B1 (en) 1987-10-22 1987-10-22 DEVICE FOR DETECTING THE BALANCE OF A ROTATING MACHINE FROM A PREDETERMINED THRESHOLD
FR8714612 1987-10-22

Publications (2)

Publication Number Publication Date
EP0313444A2 EP0313444A2 (en) 1989-04-26
EP0313444A3 true EP0313444A3 (en) 1990-10-03

Family

ID=9356073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880402601 Withdrawn EP0313444A3 (en) 1987-10-22 1988-10-13 Device for detecting the unbalance of a rotating machine when exceeding a predetermined threshold

Country Status (3)

Country Link
US (1) US4910502A (en)
EP (1) EP0313444A3 (en)
FR (1) FR2622290B1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0455878A3 (en) * 1990-05-05 1992-01-22 Heraeus Sepatech Gmbh Laboratory centrifuge
US5415026A (en) * 1992-02-27 1995-05-16 Ford; David Vibration warning device including mercury wetted reed gauge switches
US5375437A (en) * 1993-09-20 1994-12-27 General Electric Company Out-of-balance condition detecting system with lid actuated switching assembly
US5375282A (en) * 1993-09-20 1994-12-27 General Electric Company System and method for detecting and interrupting an out-of-balance condition in a washing machine
DE4335119C2 (en) * 1993-10-15 1997-11-20 Eppendorf Geraetebau Gmbh Laboratory centrifuge with unbalance shutdown
US5685038A (en) * 1995-05-18 1997-11-11 U.S. Controls Corporation Out-of-balance control for washing machine
JP3710001B2 (en) * 1995-06-16 2005-10-26 日立工機株式会社 centrifuge
KR100274470B1 (en) * 1997-05-20 2000-12-15 구자홍 A method of detecting eccentricity in washing machine and control apparatus thereof
US6029299A (en) * 1997-07-14 2000-02-29 Lg Electronics Inc. Method for detecting cloth amount in drum washing machine
SE512770C2 (en) * 1998-02-19 2000-05-08 Alfa Laval Ab support device
US6354988B1 (en) * 1999-06-17 2002-03-12 Kendro Laboratory Products, Llp Centrifuge gyro diaphragm capable of maintaining motor shaft concentricity
US6422047B1 (en) 2000-05-04 2002-07-23 Maytag Corporation Washing machine with unbalance detection and control system
US6635007B2 (en) * 2000-07-17 2003-10-21 Thermo Iec, Inc. Method and apparatus for detecting and controlling imbalance conditions in a centrifuge system
US6350224B1 (en) * 2000-07-17 2002-02-26 Westinghouse Savannah River Company, Llc Centrifugal unbalance detection system
DE10125808A1 (en) * 2001-05-26 2002-12-12 Westfalia Separator Food Tec G centrifugal
ATE552909T1 (en) * 2002-08-02 2012-04-15 Harvest Technologies Corp DECANTING CENTRIFUGE WITH VIBRATION ISOLATION
JP4352844B2 (en) * 2003-10-09 2009-10-28 日立工機株式会社 Centrifuge
JP5263570B2 (en) * 2007-10-31 2013-08-14 日立工機株式会社 Centrifuge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1256550A (en) * 1960-02-05 1961-03-24 Safety devices for centrifugal machines and the like
US3053949A (en) * 1959-11-18 1962-09-11 Harold K Johnson Intermittent electrical switch
US3790727A (en) * 1972-12-13 1974-02-05 Sealectro Corp Inertia switch with resilient conductive support arm immersed in silicone base viscous fluid medium
GB2119574A (en) * 1982-04-28 1983-11-16 Sentrol Systems Ltd Detection device
US4455461A (en) * 1982-09-29 1984-06-19 E. I. Dupont De Nemours And Company Adjustable imbalance detector for a centrifuge

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2081604A (en) * 1935-02-01 1937-05-25 Fletcher Works Inc Centrifugal circuit breaker
US2807950A (en) * 1951-09-14 1957-10-01 Borg Warner Gyration suppression control device for a washing machine
DE1298045B (en) * 1962-04-03 1969-06-19 Goedecker B J Maschf Device on centrifugal drums to compensate for the imbalance
US3226016A (en) * 1962-07-09 1965-12-28 Monsanto Chem Australia Ltd Industrial centrifuges
FR1357002A (en) * 1963-02-18 1964-04-03 Hotchkiss Brandt Safety device for automatic or semi-automatic washing machine
US3209561A (en) * 1963-11-21 1965-10-05 Westinghouse Electric Corp Unbalance control for washing machines
US3227835A (en) * 1964-10-06 1966-01-04 Borg Warner Combination out-of-balance and safety spin switch
US3583182A (en) * 1968-10-23 1971-06-08 Hitachi Ltd Washing machine
NL7304620A (en) * 1973-04-03 1974-10-07 Imbalance cutout switch for rotating bodies - of compact design and assembled close to the objective

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053949A (en) * 1959-11-18 1962-09-11 Harold K Johnson Intermittent electrical switch
FR1256550A (en) * 1960-02-05 1961-03-24 Safety devices for centrifugal machines and the like
US3790727A (en) * 1972-12-13 1974-02-05 Sealectro Corp Inertia switch with resilient conductive support arm immersed in silicone base viscous fluid medium
GB2119574A (en) * 1982-04-28 1983-11-16 Sentrol Systems Ltd Detection device
US4455461A (en) * 1982-09-29 1984-06-19 E. I. Dupont De Nemours And Company Adjustable imbalance detector for a centrifuge

Also Published As

Publication number Publication date
FR2622290B1 (en) 1990-03-30
EP0313444A2 (en) 1989-04-26
FR2622290A1 (en) 1989-04-28
US4910502A (en) 1990-03-20

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