EP0103419A2 - Waschmaschine und/oder Wäscheschleuder mit rotierender Trommel - Google Patents

Waschmaschine und/oder Wäscheschleuder mit rotierender Trommel Download PDF

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Publication number
EP0103419A2
EP0103419A2 EP83304705A EP83304705A EP0103419A2 EP 0103419 A2 EP0103419 A2 EP 0103419A2 EP 83304705 A EP83304705 A EP 83304705A EP 83304705 A EP83304705 A EP 83304705A EP 0103419 A2 EP0103419 A2 EP 0103419A2
Authority
EP
European Patent Office
Prior art keywords
motor
interlock
lid
switch
machine
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Withdrawn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
EP83304705A
Other languages
English (en)
French (fr)
Other versions
EP0103419A3 (de
Inventor
James Speedie
Sydney Shield
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.)
Colston Domestic Appliances Ltd
Original Assignee
Colston Domestic Appliances Ltd
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 Colston Domestic Appliances Ltd filed Critical Colston Domestic Appliances Ltd
Publication of EP0103419A2 publication Critical patent/EP0103419A2/de
Publication of EP0103419A3 publication Critical patent/EP0103419A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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
    • D06F34/10—Power supply arrangements, e.g. stand-by circuits

Definitions

  • This invention relates to a rotary washing, drying, or tumbling machine of the kind in which an electric motor is arranged to drive a spinning drum.
  • An object of the invention is to provide an improved machine which is capable of very high speeds of rotation and at the same time can be made light in weight and with relatively few parts.
  • the invention relates to a rotary washing, drying or tumbling machine comprising an electric motor capable of producing regenerative voltage arranged to drive a spinning drum and means to so connect the motor when it is switched off that regenerative or electro-dynamic braking of the motor takes place as the motor slows down.
  • Motors capable of producing regenerative voltage include D.C. permanent magnet motors, induction or series wound motors and commutator motors.
  • the invention is characterised by this, that the regenerated voltage is also used to control an interlock so as to prevent a door or window in the machine being opened until rotation of the drum has ceased or virtually ceased.
  • a switch is included in the machine which is operated by opening and closing the door or window and arranged so that in one position of the switch a supply voltage is applied to the motor to drive it and in a second position of the switch the motor is shorted out so as to produce regenerative voltage to assist in braking and the regenerative voltage is also applied to a relay or other device controlling said interlock.
  • the switch preferably comprises a pair of microswitches operated by cam surfaces on a rod or the like so that when one microswitch is in its ON position the other microswitch is in its OFF position.
  • the rod, or the like may be in turn operated by a connecting rod engaged with the lid or door.
  • the interlock itself preferably has means to ensure that if the relay or other device fails to operate, or regenerative voltage is not applied to it for any reason the door or window will still not open without further action from the user.
  • the spin dryer in Figure 1 is enclosed in a conventional rectangular casing 10 divided into two chambers 11 and 12 by a partition 13, the chamber 11 being sealed from the chamber 12 so as to prevent any water flowing into the chamber 12 which contains among other things the electrical components of the spin dryer.
  • the casing 10 has an aperture 14 in its upper face 15 and a hinged door 16 which closes the aperture 14 when the spin dryer is in use.
  • the spin dryer is driven by a DC permanent magnet electric motor 17 which has its permanent magnet made of sintered ferritic material so as to provide a small compact powerful DC electric motor.
  • the motor 17 is supported by a mounting assembly 18 which has a number of radially extending fingers 19 attached to a portion of casing 13 by resilient mountings 20. Attached to the drive shaft at the upper end of motor 17 is a mount 21 for a plastic drum 22. The drum 22 is screwed as at 23 to the mount 21 and is directly driven by the motor 17. A conventional rubber seal or gaiter is provided at 24 so as to prevent flow of water through from the upper chamber 11 to the lower chamber 12 and there is an additional rubber seal in the motor shaft.
  • the pump comprises a housing 26 and an integral intake 27 moulded from plastic material and a plastic rotor 28 carried on a shaft 29 supported in sealed bearings 30 and including a rubber seal 31 to prevent any flow of water from the pump into the motor.
  • the pump shaft 29 has a key 32 which engages in a slot 33 in the motor shaft 34.
  • the pump is directly driven by the DC motor and the spin dryer is also directly driven by the motor shaft at its opposite end.
  • No gearing is required and no pulleys or band drives are embodied in the drive to the pump.
  • the pump outlet is shown at 35 in Figure 1 and leads to a conventional flexible pipe 36 which may be led away to the normal sink or drain.
  • the inlet 27 of the pump is connected by a flexible pipe 37 to a drain outlet 38 formed in casing 13.
  • the drum 22 is the subject of our copending patent application No. 8226309. It comprises two cup shaped mouldings 39 and 40.
  • the upper moulding 39 has a round aperture 41 in one end to receive the clothes to be spun dried, and a flange 42 at its lower end. It also has slots 43 for flow of water which is centrifugally expelled from the drum during operation.
  • the lower cup shaped portion 40 also has a flange 44 at one end and is closed at the other end and provided with holes through which the screws 23 extend which attach the drum to the drum mount 21.
  • the two portions of the drum are joined by spin friction welding as described in our copending application.
  • Integrally moulded with the upper portion 39 are rivets 45 which extend through holes 46 in a balance ring 47 which is a dense metallic dyecasting attached by the plastic rivets 45 to the drum.
  • the dyecasting may for instance be made of material known as Mazak 3 which is a dense metal alloy. Alternatively a very dense plastic ring could be used.
  • the main portion of the drum is moulded from polypropylene without the use of glass filling.
  • this machine is capable of operating at speeds of the order of 3000 rpm and of reaching full speed in about 7 seconds.
  • the electrical circuit which will be described in detail later, is operated basically by two operating rods 48 and 49.
  • Rod 48 is engaged in a tubular moulding 50 on the underside of the casing and is moved by a post 51 attached to the lid 16. When the lid is closed the post 51 moves the rod 48 downwardly.
  • the rod 48 passes through a flexible sealing gaiter 52 and through the partition'13 and has its lower end a knurled plastic wheel 53 engaged on a thread 54. This provides for adjustment of the switch operating arm in a vertical direction.
  • the plastic wheel 53 in turn engages the operating rod 55 of a switch 56.
  • the other rod 49 is used to operate the safety interlock mechanism which will be described in detail later.
  • the upper end of the rod 49 operates the safety interlock in the lid of the machine and the lower end has a cranked arm 57 the end 58 of which is engaged in a hole in a pivoted arm 59 forming part of a solenoid 60.
  • the switch 56 carries two microswitches 62 and 63. As seen in Figure 4 one of the microswitches 62 is a motor switch and the other microswitch 63 is a brake switch.
  • the diagrammatic representation of the electrical components in Figure 4 also includes the circuit board 61, the motor 17 and the solenoid 60 with its operating arm 59. Also included is a terminal block 64 and earthing post 65. These components are shown in the form of an electrical circuit diagram in Figure 6. Mains AC voltage is applied across the terminals marked L and N to the terminal block 64 and if the microswitch 62 which operates the motor is closed and the fuse 66 is in place power will be applied across the radio interference suppresser circuit 67 and thence to the bank of full wave diode rectifiers 68 so as to produce 220 to 240 volts DC across the 0.1 microfarad capacitor 69. Assuming that microswitch 63 is open the current will be applied via solenoid .60 to motor 17.
  • the rod 55 is biased to its upper position normally by a spring 75 but when the lid is closed the rod is pushed downwardly to the position shown in Figure 5b in which as mentioned, the motor switch is closed and the brake switch is open.
  • regenerative current is used both for braking and for control of the interlock. Until the motor has slowed down very considerably and has almost stopped the current in solenoid 60 derived from the regenerative current from the motor will hold the interlock in a position to prevent the lid being opened.
  • the underside 15 of the casing has an aperture 15a and the lid 16 carries a primary catch 85 and an interlock post 82.
  • the primary catch 85 cooperates with a catch plate 86 on one edge of aperture 15a in conventional fashion.
  • the interlock post 82 carries two projections, an upper projection 83 and a lower projection 84.
  • interlock post 82 Cooperating with the interlock post 82 is an interlock mechanism which is carried by a sleeve 76 mounted on a downwardly projecting cylindrical portion 77, the sleeve 76 being integrally connected to an interlock arm 78.
  • the arm 78 carries at its outer end an upper extension 79, a lower safety hook 80, shown best in Figure 8.
  • the arm 78 is biased to the right as seen in Figure 8 by a spring 86 attached to a post 87.
  • the interlock operating arm 49 shown in Figure 1 and previously described has a lateral projection 49a at its upper end which engages in a slot 76a in the sleeve 76.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Ac Motors In General (AREA)
EP83304705A 1982-09-15 1983-08-15 Waschmaschine und/oder Wäscheschleuder mit rotierender Trommel Withdrawn EP0103419A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8226308 1982-09-15
GB8226308 1982-09-15
GB08232006A GB2127136B (en) 1982-09-15 1982-11-09 Rotary washing drying or tumbling machine
GB8232006 1982-11-09

Publications (2)

Publication Number Publication Date
EP0103419A2 true EP0103419A2 (de) 1984-03-21
EP0103419A3 EP0103419A3 (de) 1984-09-19

Family

ID=26283844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304705A Withdrawn EP0103419A3 (de) 1982-09-15 1983-08-15 Waschmaschine und/oder Wäscheschleuder mit rotierender Trommel

Country Status (3)

Country Link
EP (1) EP0103419A3 (de)
ES (1) ES8407538A1 (de)
GB (1) GB2127136B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0595040A1 (de) * 1992-10-29 1994-05-04 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Verfahren zur Herstellung einer Kunststofftrommel und so erhaltene Trommel
WO2004059069A1 (en) * 2002-12-27 2004-07-15 Arcelik Anonim Sirketi (A.S.) Washing/drying machine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5619871A (en) 1985-11-12 1997-04-15 General Electric Company Laundry machine
CA1323650C (en) 1985-11-12 1993-10-26 Franklin Lee Forbes Electrically commutated motor having an edgewise wound yoke
US4712035A (en) * 1985-11-12 1987-12-08 General Electric Company Salient pole core and salient pole electronically commutated motor
US4835839A (en) * 1985-11-12 1989-06-06 General Electric Company Method of fabricating a salient pole electronically commutated motor
ES2255851B1 (es) * 2004-12-17 2007-03-16 Girbau, S.A. Dispositivo de cierre para puerta de aparato provisto de bombo giratorio, y pestillo aplicable a tal dispositivo.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT240318B (de) * 1962-07-16 1965-05-25 Heinrich Schroeer Wäscheschleuder mit aufklappbarem Deckel
NL299263A (de) * 1963-05-10
GB1212211A (en) * 1967-11-02 1970-11-11 Gen Motors Ltd Rotary-drum machines
GB1298988A (en) * 1970-03-20 1972-12-06 British Domestic Appliances Improvements in or relating to spin driers
DE2514700A1 (de) * 1975-04-04 1976-10-14 Mack Gmbh & Co Reinhold Sicherheitsvorrichtung fuer waescheschleudern
DE2538698C2 (de) * 1975-08-30 1983-07-07 Fa. Robert Thomas, 5908 Neunkirchen Sicherheitsvorrichtung fuer waescheschleudern
DE2804822A1 (de) * 1978-02-04 1979-08-09 Thomas Fa Robert Sicherheitsvorrichtung fuer waescheschleudern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0595040A1 (de) * 1992-10-29 1994-05-04 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Verfahren zur Herstellung einer Kunststofftrommel und so erhaltene Trommel
WO2004059069A1 (en) * 2002-12-27 2004-07-15 Arcelik Anonim Sirketi (A.S.) Washing/drying machine

Also Published As

Publication number Publication date
EP0103419A3 (de) 1984-09-19
ES525148A0 (es) 1984-10-01
GB2127136B (en) 1985-12-11
ES8407538A1 (es) 1984-10-01
GB2127136A (en) 1984-04-04

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Inventor name: SPEEDIE, JAMES

Inventor name: SHIELD, SYDNEY