GB1107938A - Improvements in or relating to laundry machines - Google Patents

Improvements in or relating to laundry machines

Info

Publication number
GB1107938A
GB1107938A GB33103/66A GB3310366A GB1107938A GB 1107938 A GB1107938 A GB 1107938A GB 33103/66 A GB33103/66 A GB 33103/66A GB 3310366 A GB3310366 A GB 3310366A GB 1107938 A GB1107938 A GB 1107938A
Authority
GB
United Kingdom
Prior art keywords
motor
circuit
voltage
transistor
controlled rectifiers
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
GB33103/66A
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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
Priority claimed from US487019A external-priority patent/US3369381A/en
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Publication of GB1107938A publication Critical patent/GB1107938A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30Driving arrangements 
    • D06F37/304Arrangements or adaptations of electric motors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/10Commutator motors, e.g. repulsion motors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/10Commutator motors, e.g. repulsion motors
    • H02P25/14Universal motors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/10Commutator motors, e.g. repulsion motors
    • H02P25/14Universal motors
    • H02P25/145Universal motors whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value, speed feedback
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/03Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
    • H02P7/04Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors by means of a H-bridge circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/292Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
    • H02P7/293Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC using phase control
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Textile Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

1,107,938. Control of motors. WHIRLPOOLCORPORATION. 22 July, 1966 [13 Sept., 1965], No. 33103/66. Heading H2J. [Also in Divisions D1 and G3] Field windings 98, 99, of motor 30 are selectively energized to control the movement of the basket 28 or the agitator 29 of a washing machine. When capacitor 112 is charged from source 72 to the level required for firing unijunction transistor 111, a pulse is developed which fires two of the silicon controlled rectifiers 82-85 and supplies power to one of the field windings to drive the motor. Switches 129, 130, are cam-operated to a " spin " position by timer motor 56 to energize field winding 99 only, a switch 107 short-circuiting a portion of the field winding for operation at higher speed. Gating pulses for the controlled rectifiers are derived from transformer primary windings 126, 127, associated with magnetic reed switch 128 controllable in accordance with the position of either the agitator or the basket. Sensor 74 detects excessive motor current to reduce the voltage applied to the motor. Circuit 79 provides an input to transistor 119 proportional to motor voltage. If this voltage increases, the conduction of transistor 119 is increased to extend the charging time of capacitor 112 and so delay the triggering of the unijunction transistor 111. A sensor 76 also increases the conduction of transistor 119 with increased line voltage. A motor speed sensor comprises a bridge circuit including the armature 97 and resistors 100, 134-136. Variations in the output of this circuit are amplified by transistor 119 to control the speed. When switch 137 is actuated to the " spin " position, the resistor 136 is adjusted to allow increased speed. A delay pulse circuit is connected between the firing angle control circuit 77 and the motor reversing circuit 78, so that, when the reed switch 128 is being changed-over, a delay pulse restricts the firing of the unijunction transistor 111 until the switch is in a position for allowing pulses to be applied to the appropriate transformer winding. In another embodiment, the motor reversing circuit 78 and the delay pulse circuit are replaced by a flip-flop circuit associated with a relaxation oscillator circuit. The speed of the motor may be detected by a tachometer generator the output of which is filtered and compared with the voltage of a Zener diode for firing angle control. The supply voltage for the motor 30 may be rectified initially so that only two silicon controlled rectifiers are required in the motor circuit. The armature current is detected for controlling the firing angle of the rectifiers. In a modified form of the motor circuit, a single field winding is connected in series with the armature which is in a bridge arrangement of four controlled rectifiers. The driving motor may be of the split-phase type the auxiliary winding of which is centre-tapped and connected to alternate pairs of controlled rectifiers. In a system for a D.C. shunt motor, the armature is in a bridge circuit comprising both controlled and uncontrolled rectifiers, the field winding being split and associated with further controlled rectifiers whose gating is determined by the reed switch. In other embodiments, the drive motor for the washing machine is of the three-lead reversible A.C. type or of the permanent magnet type. Alternatively, a universal motor may be employed for this purpose. The motor circuit may comprise a multi-layer switching device which allows conduction in either direction when a voltagepulse is developed across its terminals of sufficient value, the maintaining voltage being at a lesser value.
GB33103/66A 1965-09-13 1966-07-22 Improvements in or relating to laundry machines Expired GB1107938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US487019A US3369381A (en) 1965-09-13 1965-09-13 Electronic control circuit for direct drive automatic

Publications (1)

Publication Number Publication Date
GB1107938A true GB1107938A (en) 1968-03-27

Family

ID=23934075

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33103/66A Expired GB1107938A (en) 1965-09-13 1966-07-22 Improvements in or relating to laundry machines

Country Status (6)

Country Link
JP (2) JPS494242B1 (en)
CH (1) CH442210A (en)
ES (2) ES331121A1 (en)
GB (1) GB1107938A (en)
NL (1) NL6612866A (en)
SE (1) SE326753B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034822A1 (en) * 1980-02-21 1981-09-02 Black & Decker Inc. Speed control circuit for an electric power tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5197841A (en) * 1975-02-25 1976-08-28
JPS51113248U (en) * 1975-03-10 1976-09-14
JPS52153151U (en) * 1976-05-17 1977-11-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034822A1 (en) * 1980-02-21 1981-09-02 Black & Decker Inc. Speed control circuit for an electric power tool

Also Published As

Publication number Publication date
ES331121A1 (en) 1967-09-16
ES341727A1 (en) 1968-07-01
CH442210A (en) 1967-08-31
JPS494242B1 (en) 1974-01-31
JPS5219030B1 (en) 1977-05-25
SE326753B (en) 1970-08-03
NL6612866A (en) 1967-03-14

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