EP0103418A2 - Essoreuse centrifuge à tambour en matière plastique - Google Patents

Essoreuse centrifuge à tambour en matière plastique Download PDF

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Publication number
EP0103418A2
EP0103418A2 EP83304704A EP83304704A EP0103418A2 EP 0103418 A2 EP0103418 A2 EP 0103418A2 EP 83304704 A EP83304704 A EP 83304704A EP 83304704 A EP83304704 A EP 83304704A EP 0103418 A2 EP0103418 A2 EP 0103418A2
Authority
EP
European Patent Office
Prior art keywords
drum
flanges
motor
spinning
parts
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Withdrawn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
EP83304704A
Other languages
German (de)
English (en)
Other versions
EP0103418A3 (fr
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 EP0103418A2 publication Critical patent/EP0103418A2/fr
Publication of EP0103418A3 publication Critical patent/EP0103418A3/fr
Withdrawn legal-status Critical Current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
    • D06F49/00—Domestic spin-dryers or similar spin-dryers not suitable for industrial use
    • D06F49/02—Bowl construction

Definitions

  • This invention relates to a rotary washing, drying, or tumbling machine of the type which comprises an electric motor driving a spinning drum.
  • Such machines are well-known and usually have a steel or aluminium drum. Steel drums and aluminium drums eventually corrode and are in any case expensive and heavy.
  • a rotary washing drying or tumbling machine comprises an electric motor adapted to drive a spinning drum, the spinning drum being made of plastics material.
  • the spinning drum is made of polypropylene without any glass filling.
  • the invention is characterised by a dense metallic or plastic balance ring incorporated in the drum at the end of the drum remote from the motor.
  • the drum preferably comprises two substantially cup shaped halves which are joined together in a transverse plane of the drum, and each half has a flange at its larger diameter end, the halves being joined at the two flanges.
  • the plastic drum has moulded into it attachment means by which the balance ring may be attached to the drum.
  • the attachment means may be in the form of plastic rivet devices.
  • a method of forming a rotary washing drying or tumbling machine drum comprising forming two generally cup shaped portions with flanges at their larger ends, bringing the faces of the flanges together and joining them by spin friction welding.
  • said flanges each have engaging features.
  • one flange may have on its face a circular recess or groove and the other flange may have a corresponding circular protruding ridge adapted to engage the recess or groove to hold the two parts in alignment or registration during the welding process.
  • the welding process although called spin friction welding, comprises holding the two parts together in alignment, oscillating the two parts relatively to each other so that the flanges rub at their engaging faces thus producing, by friction, sufficient heat to cause the melting of the immediate surface layers of the flanges, the two drum parts then being pressed together to complete the welding of the two parts once the temperature is sufficient to ensure the melting of the faces.
  • the machine may comprise a DC permanent magnet electric motor which is adapted to drive the spinning drum, the spinning drum being located at one end of the motor and a pump located at the other end of the motor so that the motor drives both the drum and pump rotor directly without any intermediate gearing pulleys or the like.
  • 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 is provided at 24 so as to prevent flow of water through from the upper chamber 11 to the lower chamber 12.
  • a pump 25 which is made of plastics material.
  • 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 drain outlet 38 formed in casing 13.
  • the drum 22 comprises two cup shaped mouldings 39 and 40 (Figs. 1 and 3).
  • 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.
  • 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 two halves of the drum are brought together with the protruding ridge 9b engaging in the circular recess or groove 9b and the two parts are carefully aligned. Both upper and lower parts are then oscillated about their longitudinal axes so that the two flange faces rub in frictional contact and produce heat. This oscillating process is continued until the surfaces of the two flanges are melting or about to melt and then pressure is applied to the two ends of the cup shaped portions 39 and 40 so as to ensure the two parts to weld together at the flange faces.
  • the balance ring 47 is then attached to the upper end of the drum by applying a conventional heat upsetting process to the rivets 45 which are moulded integrally with the upper portion of the drum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP83304704A 1982-09-15 1983-08-15 Essoreuse centrifuge à tambour en matière plastique Withdrawn EP0103418A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8226309 1982-09-15
GB08226309A GB2127135B (en) 1982-09-15 1982-09-15 Dryer with plastics drum

Publications (2)

Publication Number Publication Date
EP0103418A2 true EP0103418A2 (fr) 1984-03-21
EP0103418A3 EP0103418A3 (fr) 1984-09-19

Family

ID=10532927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304704A Withdrawn EP0103418A3 (fr) 1982-09-15 1983-08-15 Essoreuse centrifuge à tambour en matière plastique

Country Status (3)

Country Link
EP (1) EP0103418A3 (fr)
ES (1) ES525149A0 (fr)
GB (1) GB2127135B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854223A2 (fr) * 1997-01-21 1998-07-22 Balay S.A. Dispositif de fermeture pour cuve en plastique de machine à laver
GB2429269A (en) * 2005-07-19 2007-02-21 Alliance Laundry Systems Llc Laundry dryer with improved tumbler air flow passage openings
USRE41621E1 (en) 1999-10-19 2010-09-07 Lg Electronics Inc. Structure of driving unit in drum type washing machine
CN109944043A (zh) * 2017-12-21 2019-06-28 Bsh家用电器有限公司 用于洗涤物处理器具的滚筒、洗涤物处理器具以及用于制造滚筒的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112923698A (zh) * 2021-02-03 2021-06-08 陈亚雄 一种聚丙烯用烘干机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2186263A (en) * 1937-12-27 1940-01-09 Nineteen Hundred Corp Centrifugal clothes drier
GB793125A (en) * 1955-12-14 1958-04-09 Acme Wringers Ltd Improvements in or relating to centrifugal drying machines
CH346162A (de) * 1956-09-29 1960-04-30 Wuck Karl Zentrifuge
DE1140146B (de) * 1959-08-11 1962-11-22 Hanning Robert Gehaeuse, insbesondere Kunststoffgehaeuse, einer Haushalt-Waeschezentrifuge
DE1186805B (de) * 1960-04-21 1965-02-04 Robert Hanning Waeschezentrifuge mit einer Laugenpumpe
DE1212890B (de) * 1960-12-10 1966-03-17 Erwin Bonn Elastische Aufhaengung des Schleuderaggregats einer Zentrifuge
DE1432829A1 (de) * 1963-06-04 1969-04-10 Licentia Gmbh Waescheschleuder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB853824A (en) * 1957-11-22 1960-11-09 Laden S A Improvements in or relating to rotatable drums
BE594388A (fr) * 1960-08-25 1960-12-16 Charles Somville Panier d'essorage perfectionné.
FR2123603A5 (fr) * 1971-01-25 1972-09-15 Moulinex Sa
FR2101424A5 (fr) * 1971-05-06 1972-03-31 Calor Sa

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2186263A (en) * 1937-12-27 1940-01-09 Nineteen Hundred Corp Centrifugal clothes drier
GB793125A (en) * 1955-12-14 1958-04-09 Acme Wringers Ltd Improvements in or relating to centrifugal drying machines
CH346162A (de) * 1956-09-29 1960-04-30 Wuck Karl Zentrifuge
DE1140146B (de) * 1959-08-11 1962-11-22 Hanning Robert Gehaeuse, insbesondere Kunststoffgehaeuse, einer Haushalt-Waeschezentrifuge
DE1186805B (de) * 1960-04-21 1965-02-04 Robert Hanning Waeschezentrifuge mit einer Laugenpumpe
DE1212890B (de) * 1960-12-10 1966-03-17 Erwin Bonn Elastische Aufhaengung des Schleuderaggregats einer Zentrifuge
DE1432829A1 (de) * 1963-06-04 1969-04-10 Licentia Gmbh Waescheschleuder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854223A2 (fr) * 1997-01-21 1998-07-22 Balay S.A. Dispositif de fermeture pour cuve en plastique de machine à laver
EP0854223B1 (fr) * 1997-01-21 2003-04-16 BSH Balay, S.A. Dispositif de fermeture pour cuve en plastique de machine à laver
USRE41621E1 (en) 1999-10-19 2010-09-07 Lg Electronics Inc. Structure of driving unit in drum type washing machine
USRE42967E1 (en) 1999-10-19 2011-11-29 Lg Electronics Inc. Structure of driving unit in drum type washing machine
GB2429269A (en) * 2005-07-19 2007-02-21 Alliance Laundry Systems Llc Laundry dryer with improved tumbler air flow passage openings
US7263787B2 (en) 2005-07-19 2007-09-04 Alliance Laundry Systems Llc Laundry dryer with improved tumbler air flow passage openings
GB2429269B (en) * 2005-07-19 2009-08-19 Alliance Laundry Systems Llc Laundry dryer with improved tumbler air flow passage openings
CN109944043A (zh) * 2017-12-21 2019-06-28 Bsh家用电器有限公司 用于洗涤物处理器具的滚筒、洗涤物处理器具以及用于制造滚筒的方法

Also Published As

Publication number Publication date
GB2127135B (en) 1985-12-04
EP0103418A3 (fr) 1984-09-19
ES8502905A1 (es) 1985-02-01
GB2127135A (en) 1984-04-04
ES525149A0 (es) 1985-02-01

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Effective date: 19850521

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SPEEDIE, JAMES

Inventor name: SHIELD, SYDNEY