DE2365898A1 - DEVICE FOR DETERMINING IMBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE - Google Patents

DEVICE FOR DETERMINING IMBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE

Info

Publication number
DE2365898A1
DE2365898A1 DE2365898*A DE2365898A DE2365898A1 DE 2365898 A1 DE2365898 A1 DE 2365898A1 DE 2365898 A DE2365898 A DE 2365898A DE 2365898 A1 DE2365898 A1 DE 2365898A1
Authority
DE
Germany
Prior art keywords
centrifugal
centrifuge
unbalance
spin drum
drum
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.)
Pending
Application number
DE2365898*A
Other languages
German (de)
Inventor
Heinz Dipl Ing Hammer
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE2365898*A priority Critical patent/DE2365898A1/en
Priority to DE19732358803 priority patent/DE2358803B2/en
Publication of DE2365898A1 publication Critical patent/DE2365898A1/en
Pending 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Unbalance; Noise level

Description

Vorrichtung zur Erfassung der Unwuchtschwingungen der Schleudertrommel einer Wäschezentrifuge Device for detecting the unbalance vibrations of the centrifugal drum of a laundry centrifuge

Die Erfindung bezieht sich auf eine Vorrichtung zur Erfassung der Unwuchtschwingung einer Schleudertrommel mittels am Schleuderbehälter angeordnetem, mit einem Umschaltkontakt zusammenwirkenden unwuchtabhängig verstellbaren Teil.The invention relates to a device for detecting the unbalance vibration of a centrifugal drum by means of the centrifugal container arranged, interacting with a change-over contact, unbalanced-dependent adjustable part.

Bei einer bekannten Vorrichtung der obengenannten Art (US-PS 3 209 561) ist der Umschalter mit dem Schleudermotor derart verbunden, daß im Unwuchtfalle die Drehrichtung des Schleudermotors umgekehrt wird. Diese Drehrichtungsumkehr hat eine starke Beanspruchung der Schleudertrommel mitsamt dem Antriebsmotor zur Folge und zum anderen muß das hierfür vorgesehene Schaltgerät einen relativ hohen Betriebsstrom schalten. Durch die Erfindung soll eine Vorrichtung der obengenannten Art geschaffen werden, die die Beanspruchungen des Antriebsmotors und des Schaltgerätes relativ gering halten. Dies wird dadurch erreicht, daß der Umschalter mit Feldanzapfungen des Schleudermotors im Unwuchtfalle geschwindigkeitsvermindernd für den Schleudermotor zusammengeschaltet ist.In a known device of the type mentioned above (US Pat. No. 3,209,561), the changeover switch is connected to the centrifugal motor in such a way that that in the event of an imbalance the direction of rotation of the centrifugal motor is reversed. This reversal of the direction of rotation has a heavy load on the centrifugal drum together with the drive motor As a result, and on the other hand, the switching device provided for this purpose must switch a relatively high operating current. Through the invention a device of the type mentioned above is to be created, which the stresses of the drive motor and the switching device keep it relatively low. This is achieved in that the changeover switch with field taps of the centrifugal motor in the event of an unbalance is interconnected to reduce the speed of the centrifugal motor.

Anhand der Zeichnung wird ein Ausführungsbeispiel gemäß der Erfindung beschrieben und die Wirkungsweise näher erläutert. Es zeigenAn exemplary embodiment according to the invention is illustrated with the aid of the drawing described and the mode of operation explained in more detail. Show it

Fig. 1 eine prinzipielle Darstellung der Anordnung des elektromagnetischen Schaltgerätes am Behälter einer Schleudertrommel undFig. 1 shows a basic representation of the arrangement of the electromagnetic Switching device on the container of a centrifugal drum and

609851/0008609851/0008

VPA 73/3321 B 4.8.1976 La 21 SyrVPA 73/3321 B 4.8.1976 La 21 Syr

- 2 - VPA 73/3321 B- 2 - VPA 73/3321 B

Fig. 2 eine mögliche Schaltungsanordnung für die Beseitigung der Unwuchtschwingungen.2 shows a possible circuit arrangement for eliminating the unbalance vibrations.

In dem Gehäuse 1 der Schleuder bzw. Waschmaschine ist ein Wasserauffangbehälter 2 über beispielsweise Federn 3 elastisch aufgehängt, so daß sich die Unwucht der Schleudertrommel 4 in einer Bewegung des Wasserauffangbehalters 2 auswirkt. Diese Bewegung wird von einem an dem Wasser auf fangbehält er 2 befestigten elektromagnetischen Schaltgerät 5, das vorzugsweise ein Kleinschütz ist, erfaßt. Die Bewegungsrichtung des Ankers 6, der gestrichelt angedeutet ist, liegt in radialer Richtung in bezug auf die Schleudertrommel 4. Wird die Unwucht schwingung, d.h. der Ausschlag des Wasserauffangbehalters derart groß, daß sich der Anker in Bewegung setzen kann, so werden über den Kontaktbrückenträger, der mit dem Anker verbunden ist, jedoch nicht näher dargestellt wurde, die Kontakte des elektromagnetischen Schaltgerätes geschlossen bzw. geöffnet. Fig. 2 zeigt die Schaltung, bei der die Spule 7 des elektromagnetischen Schaltgerätes 6 über einen Schließerkontakt 8 an die Netzklemmen 9 und 10 angeschlossen ist. Hierdurch wird erreicht, daß bei nur geringer Bewegung des Ankers 6 der Kontakt 8 geschlossen wird und hiernach ein Durchschalten des elektromagnetischen Schaltgerätes durch Unter-Spannung-Setzen der Spule 7 erfolgt. Der Schleudermotor 11 liegt mit den Feldwicklungen 12 und 13 über einen Schließerkontakt 14 an den Netzklemmen 9 und 10, wobei die Feldwicklung 13 eine Anzapfung 15 aufweist, die über einen Öffnerkontakt 16 an die Netzklemme 9 angeschlossen ist, so daß dieser Öffnerkontakt 16 die schnelle Drehzahl des Motors 11 bei Auftreten der Unwuchtschwingung unterbricht und durch Verlängerung der Feldwicklung und Schließen des Kontaktes 14 eine geringere Drehzahl für den Schleuderantrieb bewirkt. Schließerkontakt 14 und Öffnerkontakt 16 bilden einen Umschalter. Die erfindungsgemäße Ausführung hat den Vorteil, daß der Schleudervorgang trotz Unwucht noch zu Ende geführt werden kann. Die Drehzahl, die hier gewählt wird, ist dann so gering, daß keine Gefahr mehr für das Gerät infolge der Unwucht schwingung besteht.In the housing 1 of the centrifuge or washing machine, a water collecting container 2 is suspended elastically via springs 3, for example, so that the imbalance of the centrifugal drum 4 results in a movement of the water collecting container 2. This movement is detected by an electromagnetic switching device 5, which is preferably a miniature contactor, attached to the water on catch container 2. The direction of movement of the armature 6, which is indicated by dashed lines, lies in the radial direction with respect to the centrifugal drum 4. If the unbalance vibration, ie the deflection of the water collecting container is so great that the armature can start moving, the contact bridge carrier, which is connected to the armature, but has not been shown in detail, the contacts of the electromagnetic switching device are closed or opened. 2 shows the circuit in which the coil 7 of the electromagnetic switching device 6 is connected to the mains terminals 9 and 10 via a normally open contact 8. This means that when the armature 6 moves only slightly, the contact 8 is closed and then the electromagnetic switching device is switched through by energizing the coil 7. The centrifugal motor 11 is connected to the field windings 12 and 13 via a normally open contact 14 at the mains terminals 9 and 10, the field winding 13 having a tap 15 which is connected to the mains terminal 9 via a normally closed contact 16 so that this normally closed contact 16 has the high speed of the motor 11 is interrupted when the unbalance vibration occurs and by lengthening the field winding and closing the contact 14 causes a lower speed for the spin drive. Normally open contact 14 and normally closed contact 16 form a changeover switch. The embodiment according to the invention has the advantage that the spinning process can still be completed despite the imbalance. The speed that is selected here is so low that there is no longer any risk for the device vibration as a result of the imbalance.

1 Patentanspruch1 claim

2 Figuren2 figures

6 09851/00086 09851/0008

Claims (1)

- 3 - VPA 73/3321 B- 3 - VPA 73/3321 B PatentanspruchClaim Vorrichtung zur Erfassung der Unwuchtschwingung einer Schleudertrommel mittels am Schleuderbehälter angeordnetem, mit einem Umschaltkontakt zusammenwirkenden unwuchtabhängig verstellbaren Teil, dadurch gekennzeichnet, daß der Umschalter mit Feldanzapfungen des Schleudermotors im Unwuchtfalle geschwindigkeitsvermindernd für den Schleudermotor zusammengeschaltet ist.Device for detecting the unbalance vibration of a centrifugal drum by means of an imbalance-dependent adjustment which is arranged on the centrifugal container and interacts with a changeover contact Part, characterized in that the changeover switch with field taps of the centrifugal motor reduces the speed in the event of an unbalance is interconnected for the centrifugal motor. 609851 /0008609851/0008 Le e rs eILe e rs EI
DE2365898*A 1973-11-26 1973-11-26 DEVICE FOR DETERMINING IMBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE Pending DE2365898A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2365898*A DE2365898A1 (en) 1973-11-26 1973-11-26 DEVICE FOR DETERMINING IMBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE
DE19732358803 DE2358803B2 (en) 1973-11-26 1973-11-26 DEVICE FOR DETERMINING UNBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2365898*A DE2365898A1 (en) 1973-11-26 1973-11-26 DEVICE FOR DETERMINING IMBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE
DE19732358803 DE2358803B2 (en) 1973-11-26 1973-11-26 DEVICE FOR DETERMINING UNBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE

Publications (1)

Publication Number Publication Date
DE2365898A1 true DE2365898A1 (en) 1976-12-16

Family

ID=25766159

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2365898*A Pending DE2365898A1 (en) 1973-11-26 1973-11-26 DEVICE FOR DETERMINING IMBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE
DE19732358803 Granted DE2358803B2 (en) 1973-11-26 1973-11-26 DEVICE FOR DETERMINING UNBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE19732358803 Granted DE2358803B2 (en) 1973-11-26 1973-11-26 DEVICE FOR DETERMINING UNBALANCE VIBRATIONS IN THE SPIN DRUM OF A CENTRIFUGE

Country Status (1)

Country Link
DE (2) DE2365898A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728609A1 (en) * 1987-08-27 1989-03-09 Licentia Gmbh Device for spin-dryer (centrifuge) starting current limiting and for preventing uncontrolled operating states in the event of power failures, especially in the case of washing machines
WO1996023349A1 (en) * 1995-01-24 1996-08-01 Aktiebolaget Electrolux A device for control of the speed of a series motor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5857955A (en) * 1996-03-27 1999-01-12 M-I Drilling Fluids L.L.C. Centrifuge control system
US5879279A (en) * 1996-09-05 1999-03-09 U.S. Centrifuge Centrifugal separator apparatus having a vibration sensor
US6368264B1 (en) * 1999-03-29 2002-04-09 M-I L.L.C. Centrifuge control system and method with operation monitoring and pump control
US6350224B1 (en) * 2000-07-17 2002-02-26 Westinghouse Savannah River Company, Llc Centrifugal unbalance detection system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728609A1 (en) * 1987-08-27 1989-03-09 Licentia Gmbh Device for spin-dryer (centrifuge) starting current limiting and for preventing uncontrolled operating states in the event of power failures, especially in the case of washing machines
FR2620877A1 (en) * 1987-08-27 1989-03-24 Licentia Gmbh DEVICE FOR LIMITING THE SPIN START-UP CURRENT AND FOR PREVENTING UNCONTROLLED OPERATING CONDITIONS AFTER BREAKDOWN OF THE NETWORK, PARTICULARLY IN WASHING MACHINES
WO1996023349A1 (en) * 1995-01-24 1996-08-01 Aktiebolaget Electrolux A device for control of the speed of a series motor

Also Published As

Publication number Publication date
DE2358803B2 (en) 1976-11-18
DE2358803A1 (en) 1975-06-05

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