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DE4119902A1 - Drive unit for washing machines etc. - has three=phase asynchronous motor with at least 2 slots per pole and phase - Google Patents

Drive unit for washing machines etc. - has three=phase asynchronous motor with at least 2 slots per pole and phase

Info

Publication number
DE4119902A1
DE4119902A1 DE4119902A DE4119902A DE4119902A1 DE 4119902 A1 DE4119902 A1 DE 4119902A1 DE 4119902 A DE4119902 A DE 4119902A DE 4119902 A DE4119902 A DE 4119902A DE 4119902 A1 DE4119902 A1 DE 4119902A1
Authority
DE
Germany
Prior art keywords
motor
phase
frequency converter
drive unit
stator
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.)
Ceased
Application number
DE4119902A
Other languages
German (de)
Inventor
Heinz Schaeffersmann
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.)
ELEKTRONIK REGELAUTOMATIK
Original Assignee
ELEKTRONIK REGELAUTOMATIK
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 ELEKTRONIK REGELAUTOMATIK filed Critical ELEKTRONIK REGELAUTOMATIK
Priority to DE4119902A priority Critical patent/DE4119902A1/en
Priority to DE4131048A priority patent/DE4131048A1/en
Priority to DE4137007A priority patent/DE4137007A1/en
Priority to SE9201761A priority patent/SE9201761L/en
Priority to BE9200554A priority patent/BE1006848A3/en
Priority to JP4181645A priority patent/JPH05276793A/en
Priority to US07/899,784 priority patent/US5378952A/en
Priority to DE4241553A priority patent/DE4241553A1/en
Publication of DE4119902A1 publication Critical patent/DE4119902A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/12—Asynchronous induction motors for multi-phase current
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/048—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using AC supply for only the rotor circuit or only the stator circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

A drive unit is for washing machines or similar appliances and its several features include a three-phase asynchronous motor with a number of slots in excess of two slots per pole and phase. The rotor slot number is bigger than the stator slot number of the motor. The sheets of the sheet parcel (stator) are welded together at the back and not incorporated into a housing. The motor coil can be converted to different voltages and a heat monitor is installed inside the motor coil. A frequency transformer is provided and the changing of the revolution direction is achieved by means of controlling the frequency transformer output and the transformer is programmed differently for different accelerations and decelerations. An impedance sensor alters the control signals for the transformer. ADVANTAGE - The drive unit runs quietly and is suitable for hospitals, etc.. The motor has been improved and no disturbances are caused in the mains supply to affect data processing functions or medical equipment. The machine can be operated with virtually all voltages and frequencies

Description

Es ist bereits versucht worden, die vorgenannten Maschinen, wie Waschmaschinen für Haushalt und Gewerbe, Schleudern und Trocknen u. a. auch bei der Textilveredelung, mit Asynchron­ motoren und vorgeschalteten Frequenzumrichtern zu betreiben.Attempts have already been made to use the aforementioned machines, such as washing machines for household and commercial use, spinning and Drying u. a. also in textile finishing, with asynchronous to operate motors and upstream frequency converters.

Die Lösungen befriedigen aber in einem oder meist mehreren der nachfolgenden Punkte nicht.However, the solutions satisfy one or usually several of the points below.

  • 1. Es fehlt an der nötigen Laufruhe. Besonders störend z. B. in Krankenhäusern, Hotels, Mehrfamilienhäusern usw.1. The necessary smoothness is lacking. Particularly disturbing B. in hospitals, hotels, apartment buildings etc.
  • 2. Die erzielten Wirkungsgrade brachten keine nennenswerte Energieeinsparung.2. The efficiencies achieved brought no significant Energy saving.
  • 3. Es fehlte an der nötigen Zuverlässigkeit und Verfügungs­ bereitschaft.3. The necessary reliability and disposition were lacking standby.
  • 4. Es traten vermehrt Störungen in den Netzen auf z. B. Beeinflussung von Fernsehen, Datenverarbeitungsanlagen, medizinischen Meßgeräten und dergleichen.4. There were increased disturbances in the networks z. B. Influencing television, data processing systems, medical measuring devices and the like.
  • 5. Die Kostenentwicklung war ungünstig, der Motor mußte überdimensioniert werden, die Entstörung war aufwendig.5. The cost development was unfavorable, the engine had to be oversized, the interference suppression was expensive.
  • 6. Es waren Einschränkungen in der Arbeitsweise vorhanden (kritische Drehzahlen, fehlendes Drehmoment), die Auf­ wendungen für Reparaturen waren hoch und die Energie­ kosten waren unangemessen.6. There were restrictions in the way of working (critical speeds, lack of torque), the on Repairs were high and the energy costs were inadequate.

Es ist die Aufgabe der in dem Patentanspruch beschriebenen Erfindung, die vorstehend genannten Mängel insgesamt zu be­ heben.It is the task of those described in the claim Invention to be the above-mentioned shortcomings in total to lift.

Die erfindungsgemäße Gesamtkombination geht zunächst von einem verbesserten bzw. geeigneteren Motor aus. Es hat sich als notwendig erwiesen, die Motoren zu optimieren, da eine absolut sinusförmige Spannung mittels Frequenzumrichtern nicht zu erhalten ist. Hierbei ist zu berücksichtigen, daß eine Wäschebehandlungsmaschine praktisch mit allen Spannungen und Frequenzen zwischen Null und Nennspannung und zwischen Null und etwa 200 Hz betrieben wird.The overall combination according to the invention starts from an improved or more suitable engine. It has proved to be necessary to optimize the motors, since a absolutely sinusoidal voltage using frequency converters is not available. It should be noted that a laundry treatment machine with practically all tensions and frequencies between zero and nominal voltage and between Zero and about 200 Hz is operated.

Wichtig ist ferner, daß bei dem festgelegten bzw. zu pro­ grammierenden Arbeitsabläufen dies nicht nur unter dem Ge­ sichtspunkt optimaler Funktionstüchtigkeit, sondern gleichzeitig auch unter dem Gesichtspunkt minimalem Energiebezugs erfolgt.It is also important that at the specified or pro grammatical workflows not only under the Ge viewpoint of optimal functionality, but at the same time also takes place from the point of view of minimal energy consumption.

Die Vorteile der erfindungsgemäßen Antriebseinheit sind ein kostengünstiger Aufbau, eine Energieeinsparung, eine Vermeidung von magnetischen Geräuschen (Lärm) und eine keinen Einschränkungen unterliegende Arbeitsweise der Maschinen. Es können alle Drehzahlen, Beschleunigungen und Verzögerungen bei minimaler Magnetisierung des Motors eingestellt bzw. gefahren werden. Es entstehen weder Zusatzverluste durch aufwendige Drosseln, noch sind Einschränkungen im Kraftbedarf vorhanden.The advantages of the drive unit according to the invention are an inexpensive construction, an energy saving, a Avoidance of magnetic noises (noise) and none Operation of the machines subject to restrictions. It can handle all speeds, accelerations and decelerations set with minimal motor magnetization or be driven. There are no additional losses through elaborate chokes, there are still restrictions in power requirements available.

Claims (1)

Antriebseinheit für eine Wäschebehandlungsmaschine, gekenn­ zeichnet durch die Kombination folgender mechanischer und elektrischer Konstruktionsmerkmale derart,
  • a) daß ein Dreiphasen-Asynchronmotor verwendet wird mit einer Nutenzahl von mehr als zwei Nuten pro Pol und Phase,
  • b) daß der Motor eine Rotornutenzahl enthält, die größer als die Ständernutenzahl ist,
  • c) daß die Bleche des Blechpaketes (Stator) im Rücken zu­ sammengeschweißt sind und in keine Ummantelung (Gehäuse) eingebaut sind,
  • d) daß der Motor eine gesehnte Halblochwicklung besitzt,
  • e) daß die Wicklung des Motors für verschiedene Spannungen umschaltbar ist,
  • f) daß innerhalb der Motorwicklung ein Wärmewächter ein­ gebaut ist, ferner
  • g) daß der Energiebezug des Motors über einen Frequenzum­ richter erfolgt, dessen Ausgangsfrequenz entsprechend der Antriebsaufgabe unterhalb oder oberhalb der Netz­ frequenz liegt,
  • h) daß die Umschaltung der Drehrichtung durch Umsteuern des Frequenzumrichterausganges erfolgt,
  • i) daß der Frequenzumrichter für verschiedene Beschleu­ nigungen bzw. Verzögerungen unterschiedlich programmiert wird,
  • j) daß die Abbremsung der Maschine unter Zuhilfenahme des Frequenzumrichters erfolgt,
  • k) daß der Antrieb teilweise im Feldschwächebetrieb arbeitet,
  • l) daß mit dem Programm für den Arbeitsablauf, bzw. der Ein- oder Umschaltung, auch die Umschaltung der Programmierung für den Frequenzumrichter erfolgt, ferner
  • m) daß ein Unwuchtsensor, in Verbindung mit einer Drehzahl die zwischen den Arbeitsbereichen liegt, die Vorgaben für den Frequenzumrichter verändert,
  • n) daß ein Netzfilter mit Doppelwirkung, das heißt, eine Bedämpfung der Störungen vom Netz zum Motor und in Gegenrichtung vom Motor zum Netz hin, eingebaut ist.
Drive unit for a laundry treatment machine, characterized by the combination of the following mechanical and electrical design features ,
  • a) that a three-phase asynchronous motor is used with a number of slots of more than two slots per pole and phase,
  • b) that the motor contains a number of rotor grooves that is greater than the number of stator grooves,
  • c) that the sheets of the sheet stack (stator) are welded together in the back and are not installed in any casing (housing),
  • d) that the motor has a half-hole winding,
  • e) that the winding of the motor can be switched over for different voltages,
  • f) that a heat monitor is built within the motor winding, further
  • g) that the energy supply of the motor takes place via a frequency converter, the output frequency of which is below or above the mains frequency according to the drive task,
  • h) that the direction of rotation is changed by reversing the frequency converter output,
  • i) that the frequency converter is programmed differently for different accelerations or delays,
  • j) that the machine is braked with the aid of the frequency converter,
  • k) that the drive partly works in the field weakening mode,
  • l) that with the program for the workflow, or the switching or switching, the switching of the programming for the frequency converter is also carried out
  • m) that an unbalance sensor, in connection with a speed that lies between the working areas, changes the specifications for the frequency converter,
  • n) that a line filter with double action, that is, a damping of interference from the network to the motor and in the opposite direction from the motor to the network, is installed.
DE4119902A 1991-06-17 1991-06-17 Drive unit for washing machines etc. - has three=phase asynchronous motor with at least 2 slots per pole and phase Ceased DE4119902A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE4119902A DE4119902A1 (en) 1991-06-17 1991-06-17 Drive unit for washing machines etc. - has three=phase asynchronous motor with at least 2 slots per pole and phase
DE4131048A DE4131048A1 (en) 1991-06-17 1991-09-18 Drive unit for laundry treatment machine - permits use of smaller motors through enhanced motor performance
DE4137007A DE4137007A1 (en) 1991-06-17 1991-11-11 Electric induction motor drive for washing machine - has special construction of motor windings based on edge frequency at which max. voltage is produced
SE9201761A SE9201761L (en) 1991-06-17 1992-06-09 PROCEDURE MOVE SPEED CONTROL OF INDUCTION ENGINES
BE9200554A BE1006848A3 (en) 1991-06-17 1992-06-16 Electrical control device for a machine.
JP4181645A JPH05276793A (en) 1991-06-17 1992-06-17 Drive unit for asynchronous motor of a washing machine or the like, and revolution number control method for induction motor
US07/899,784 US5378952A (en) 1991-06-17 1992-06-17 Machine drive system and method
DE4241553A DE4241553A1 (en) 1991-06-17 1992-12-10 Washing machine drive is fed via frequency transformer - features raised secondary resistance of rotor to improve effectiveness at lower speeds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4119902A DE4119902A1 (en) 1991-06-17 1991-06-17 Drive unit for washing machines etc. - has three=phase asynchronous motor with at least 2 slots per pole and phase

Publications (1)

Publication Number Publication Date
DE4119902A1 true DE4119902A1 (en) 1993-01-07

Family

ID=6434108

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4119902A Ceased DE4119902A1 (en) 1991-06-17 1991-06-17 Drive unit for washing machines etc. - has three=phase asynchronous motor with at least 2 slots per pole and phase

Country Status (1)

Country Link
DE (1) DE4119902A1 (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783404A (en) * 1954-03-02 1957-02-26 Gen Motors Corp Stator lamination welded assembly
DE1037573B (en) * 1956-12-21 1958-08-28 Siemens Ag Arrangement for angled mounting of a stator core on the supporting housing part
US2928932A (en) * 1957-07-26 1960-03-15 Gen Motors Corp Sheet metal weld assembly
DE1218599B (en) * 1965-03-25 1966-06-08 Waasner B Laminated core held together by welding seams with press plates for electrical machines
DE1613140A1 (en) * 1967-04-15 1970-05-21 Hanning Elektro Werke Pole-changing asynchronous motor for driving washing machines
DE1538882B2 (en) * 1966-07-11 1971-11-25 Loher & Söhne GmbH, 8399 Ruhstorf TEMPERATURE SENSOR ARRANGEMENT IN WINDINGS OF ELECTRIC MACHINES OR DEVICES
DE2409889A1 (en) * 1974-03-01 1975-09-11 Standard Elektrik Lorenz Ag Control cct for washing machine motor - has main winding sub-divided to act as freq-multiplying inverter transformer
DE3606819A1 (en) * 1986-03-03 1987-09-10 Licentia Gmbh METHOD FOR CORRECTING THE UNBALANCED LIMIT VALUE FOR A PROGRAM-CONTROLLED WASHING MACHINE
SU1418882A1 (en) * 1984-03-27 1988-08-23 Всесоюзный научно-исследовательский проектно-конструкторский и технологический институт силовых полупроводниковых устройств Frequency-controlled electric drive
SU1432711A1 (en) * 1987-02-27 1988-10-23 Московский Горный Институт A.c. electric drive
SU1568193A1 (en) * 1988-02-29 1990-05-30 V Pk T I Svetotekhnicheskoj Pr Method of controlling rotational speed of three-phzase induction motor
EP0392962A2 (en) * 1989-04-12 1990-10-17 Emerson Electric Co. Speed control for inverter driven washing machine
EP0394177A2 (en) * 1989-04-17 1990-10-24 Emerson Electric Co. Unbalanced load detection system and method for a household appliance
DE3914021A1 (en) * 1989-04-28 1990-10-31 Elektronik Regelautomatik Optimisation of asynchronous motors - measuring current and rotation of unloaded motor at rotation speed suitable for detecting slot effect
DE9013638U1 (en) * 1990-09-28 1990-12-06 Siemens AG, 8000 München Engine monitoring arrangement

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783404A (en) * 1954-03-02 1957-02-26 Gen Motors Corp Stator lamination welded assembly
DE1037573B (en) * 1956-12-21 1958-08-28 Siemens Ag Arrangement for angled mounting of a stator core on the supporting housing part
US2928932A (en) * 1957-07-26 1960-03-15 Gen Motors Corp Sheet metal weld assembly
DE1218599B (en) * 1965-03-25 1966-06-08 Waasner B Laminated core held together by welding seams with press plates for electrical machines
DE1538882B2 (en) * 1966-07-11 1971-11-25 Loher & Söhne GmbH, 8399 Ruhstorf TEMPERATURE SENSOR ARRANGEMENT IN WINDINGS OF ELECTRIC MACHINES OR DEVICES
DE1613140A1 (en) * 1967-04-15 1970-05-21 Hanning Elektro Werke Pole-changing asynchronous motor for driving washing machines
DE2409889A1 (en) * 1974-03-01 1975-09-11 Standard Elektrik Lorenz Ag Control cct for washing machine motor - has main winding sub-divided to act as freq-multiplying inverter transformer
SU1418882A1 (en) * 1984-03-27 1988-08-23 Всесоюзный научно-исследовательский проектно-конструкторский и технологический институт силовых полупроводниковых устройств Frequency-controlled electric drive
DE3606819A1 (en) * 1986-03-03 1987-09-10 Licentia Gmbh METHOD FOR CORRECTING THE UNBALANCED LIMIT VALUE FOR A PROGRAM-CONTROLLED WASHING MACHINE
SU1432711A1 (en) * 1987-02-27 1988-10-23 Московский Горный Институт A.c. electric drive
SU1568193A1 (en) * 1988-02-29 1990-05-30 V Pk T I Svetotekhnicheskoj Pr Method of controlling rotational speed of three-phzase induction motor
EP0392962A2 (en) * 1989-04-12 1990-10-17 Emerson Electric Co. Speed control for inverter driven washing machine
EP0394177A2 (en) * 1989-04-17 1990-10-24 Emerson Electric Co. Unbalanced load detection system and method for a household appliance
DE3914021A1 (en) * 1989-04-28 1990-10-31 Elektronik Regelautomatik Optimisation of asynchronous motors - measuring current and rotation of unloaded motor at rotation speed suitable for detecting slot effect
DE9013638U1 (en) * 1990-09-28 1990-12-06 Siemens AG, 8000 München Engine monitoring arrangement

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
BALA, C. *
DMOWSKI, Antoni *
NIEDERMEIER, K.: Geregelte Antriebe in der Wasch- technik. In: VDI-Berichte, Nr.482, 1983 *
S.119- 123 *
SCHWARZ, Christian: Drehstroman- trieb mit Transistorwechselrichter mit sinusför- migem Eingangsstrom. In: etz Bd.107, H.21, 1986, S.986-989 *
Siemens Firmenschrift Nr. A 19100-E319-A365-V1, ASIMOVERT -P- Umrichter für Drehstromantriebe von 30 bis 900 kW, 1989 *
u.a.:Handbuch der Wickeltechnik elektri-scher Maschinen, 2.Aufl. Berlin 1969, S.40,41,131-133, 139-142,147-151 *

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