EP2103732B1 - Tumble dryer - Google Patents

Tumble dryer Download PDF

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Publication number
EP2103732B1
EP2103732B1 EP08102753.4A EP08102753A EP2103732B1 EP 2103732 B1 EP2103732 B1 EP 2103732B1 EP 08102753 A EP08102753 A EP 08102753A EP 2103732 B1 EP2103732 B1 EP 2103732B1
Authority
EP
European Patent Office
Prior art keywords
basement
drum
plastic
rollers
tumble dryer
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.)
Active
Application number
EP08102753.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2103732A1 (en
Inventor
Flavio Noviello
Diego Dal Ben
Alessandro Vian
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39849190&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2103732(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP08102753.4A priority Critical patent/EP2103732B1/en
Priority to EP12002521.8A priority patent/EP2476795B1/en
Priority to PL12002521T priority patent/PL2476795T3/pl
Priority to RU2009110047/12A priority patent/RU2486300C2/ru
Publication of EP2103732A1 publication Critical patent/EP2103732A1/en
Application granted granted Critical
Publication of EP2103732B1 publication Critical patent/EP2103732B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/06—Mountings for the rotating drums

Definitions

  • the present invention generally relates to clothes and laundry drying machines, particularly to tumble dryers comprising a rotatable drum arranged for causing agitation of the articles to be dried. More specifically, the present invention relates to the aspects of rotatably supporting the dryer drum within a dryer cabinet.
  • Tumble dryers are home appliances adapted to dry clothes, garments, laundry in general by circulating hot, dry air within a tumbler or drum (sometimes also referred to as drying tub) designed to contain the articles to be dried.
  • a tumbler or drum sometimes also referred to as drying tub
  • Tumble dryers having the drum formed of a generically cylindrical body open at its front and rear ends, abutting against front and rear bulkheads are known in the art.
  • the drum is rotatably mounted within a machine cabinet, and in operation it is made to rotate in order to cause agitation of the articles to be dried, which repeatedly tumble with the drum while being invested by the drying air flow.
  • drying machine drum is installed within the machine cabinet above a plastic base, made of lower and upper base portions formed by injection molding, wherein air passages are formed for the drying air flow.
  • the drying air flow is typically caused to pass through the drum, exiting therefrom from the front access opening, then it passes through a condensing system, where the humid air is at least partially dried, and the dried air flow is caused to invest a heating arrangement, like an electrical resistance, to be warmed; the warmed drying air flow then passes again through the drum, and repeats the cycle.
  • a condensing system where the humid air is at least partially dried, and the dried air flow is caused to invest a heating arrangement, like an electrical resistance, to be warmed; the warmed drying air flow then passes again through the drum, and repeats the cycle.
  • the condensing system may be an air-air heat exchanger, exploiting air taken in from the outside.
  • Other known dryers exploit a heat pump to dry the drying air flow; in these dryers, the function of the heating arrangement may be performed by the heat pump itself, and the electrical resistance may thus not be provided for.
  • the drum is supported on a generally horizontal axis by a system including a pair of rollers supported on brackets fixed to a rear bulkhead, and by a pair of slide bearings supported by similar brackets fixed to a front bulkhead, the bulkheads being in turn fixed to panels of the cabinet.
  • a drying machine wherein the drum rests on four supporting rolls, with axis parallel to the drum axis, which rotate on supports secured to the external structure of the machine and disposed in pairs along two generatrices of the drum in symmetrical position with respect to a vertical plane crossing the drum rotation axis.
  • Four upper rolls keep the drum in position on the supporting rolls.
  • the drum is rotatably supported by two rollers fixed to the front part of the appliance, and a bearing pin located on the back panel of the appliance.
  • EP-A-1541742 discloses a laundry dryer with a roller-support.
  • the drive roller is supported on a carrier ring and runs on a drive ring surrounding the loading aperture and the gap between the drum front and roller face is closed by a protective flanged disc locked by a peg against rotation.
  • the drum is rotatably supported in a known manner by a rear bearing.
  • drum supporting elements mounted to parts of the machine cabinet, undesired vibrations are transmitted to the cabinet by the rotation of the drum.
  • a tumble dryer comprising:
  • Said plastic basement may be formed by injection moulding.
  • the pins are preferably provided on the upper basement portion.
  • Each of said pins may protrude from a respective bracket formed in the plastic basement.
  • One or more of said brackets are formed in a single piece construction with the plastic basement, particularly with the upper basement portion.
  • the pins are preferably formed in a single piece construction with said plastic basement, in particular with the respective bracket. This reduces the number of components.
  • the rollers may be mounted on the respective pins by means of screws or by snap-fit engagement.
  • the plastic basement may be adapted to accommodate a condenser or a heat pump.
  • Said plastic basement is preferably adapted to the mounting thereon of panels of the machine cabinet, particularly bulkheads for the drum.
  • the plastic basement that is used to guide the drying air flow is also exploited as the support element of the rollers that in turn rotatably support the drum.
  • An advantage of the present invention is that it is possible to perform intermediate functional tests during the drier manufacturing process, because for the rotation of the drum it is not necessary to fully assemble the drier; in particular, the panels of the machine cabinet need not be mounted.
  • the cabinet panels can be assembled essentially at the end of the manufacturing, with less risks of scraping or other aesthetical defects.
  • the machine assembly is also made easier and faster, and service or maintenance of the drier are also facilitated.
  • Another advantage is that since the support of the drum is entrusted to the plastic basement, vibrations deriving from the rotation of the drum are effectively damp.
  • roller pins formed integrally, in a single piece with the plastic basement, the number of dryer components is reduced, and this is advantageous in terms of manufacturing costs, inventory management, assembly operations.
  • the tumble drier generally denoted as 100 , comprises a drum 105 for the loading of the articles to be dried, such as clothes, garments, linen, and similar articles.
  • the drum 105 is a generically cylindrical body, for example made of stainless steel, open at the two ends 105a and 105b thereof (a front end 105a and a rear end 105b ). Proximate to each of the ends 105a and 105b , a recessed circumferential groove 110a and 110b is formed in the exterior surface of the drum 105 ; the two grooves, as will be clear from the following, form abutment surfaces for supporting rollers rotatably supporting the drum 105.
  • the drum 105 is rotatably supported on a basement 115 , by means of rollers which are mounted thereon, as will be described in detail later on.
  • the basement 105 forms the base of a machine cabinet which encloses the drum 105 as well as other machine components like for example a motor for rotating the drum 105 , e . g . by means of a belt transmission (not shown in the drawing); the cabinet further comprises a front panel 120 , with a drum access opening 120 closable by an associated door (not shown in the drawing), an essentially close rear panel 130 , and two side panels 135 (only one of which is shown in the drawing). A top panel (also not shown in the drawing) closes the machine cabinet from above.
  • the front and rear panels 120 and 130 form respectively front and rear bulkheads, against which the rim of the front and rear drum ends 105a and 105b abuts (gaskets or seals may be provided along the rims of the drum ends 105a and 105b , and/or on the inner side of the front and rear panels 120 and 130 , in corresponding positions).
  • the basement 115 shown per-se and in greater detail in Figures 2 and 3 , is formed by a lower basement portion 115a and an upper basement portion 115b , mounted the latter onto the former; the lower and upper basement portions 115a and 115b are in plastic material, and they may for example be formed by injection moulding.
  • the lower and upper basement portions 115a and 115b are attached so as to make one integral to the other by means of welding or gluing along their matching edges.
  • the lower and upper basement portions 115a and 115b are shaped in such a way that, when they are assembled, they define a sort of shell and form therebetween passages, ducts for a flow of drying air which, by means of suitable means like fans (accommodated within the machine cabinet), is caused to repeatedly circulate through the drum 105 , for drying the articles contained therein.
  • the basement 115 is structured to be able to receive an air flow exiting the drum from the front end 105a and which is conveyed by an air conveyor (not shown) provided on the inner side of the front panel 120 (the plastic basement may also be adapted to the intake of air from the exterior environment), and to deliver the air flow to a heater, like an electrical resistance, arranged at the rear of the machine cabinet, for example supported by the rear panel 130 .
  • a condenser for example an air-air heat exchanger or an evaporator of a heat pump (not shown in the drawings) is accommodated, for drying the humid air flow that comes from the drum.
  • the provision of the electrical resistance may be dispensed for, its function being accomplished by the heat pump itself.
  • the plastic basement 115 is shaped so as to define four brackets 205a , 205b , 205c and 205d , located substantially at the four corners of the upper basement portion 115a .
  • the brackets 205a and 205b are positioned at the front of the basement 115 , which in use is located in correspondence of the front panel 120
  • the brackets 205a and 205d are positioned at the rear of the basement 115 , in use located in correspondence of the rear panel 130 .
  • brackets 205a and 205d which in use stand on the right side of the machine cabinet (looking it from the front) are higher than the bracket 205c , located on the left-rear corner of the basement 115 , which in turn is higher than the bracket 205b , located on the left-front corner of the basement 115 .
  • the four brackets 205a , 205b , 205c and 205d are formed with a curved profile to define a sort of cradle for the drum 105 .
  • brackets 205a , 205b , 205c and 205d are in a single piece construction with the upper basement portion 115b , nothing prevents that, in alternative invention embodiments, one or more of the brackets is manufactured separately from the plastic basement and mounted thereto by means of any suitable means.
  • Each of the brackets 205a , 205b , 205c and 205d supports, essentially at the top thereof, a respective bush or pin 210 , with axis lying in a plane parallel to a base plane of the basement 115 ( i . e ., in use, the pins extend horizontally); the pins 210 of the front brackets 205a and 205b protrude towards the rear of the machine cabinet, whereas the pins 210 of the rear brackets 205c and 205d protrude towards the front of the machine cabinet.
  • the pins may be formed integral to, in a single piece construction with the upper basement portion 115b , i . e .
  • brackets 205a , 205b , 205c and 205d may be obtained by means of the moulding process that produces the upper basement portion 115b , or they may be realized as separate pieces, that are then mounted to the brackets 205a , 205b , 205c and 205d , for example by means of screws or welding or other suitable means.
  • each pin 210 rotatably supports a respective roller 215 .
  • the rollers 215 may be coupled to the pins 210 my means of screws, or by snap-fit engagement.
  • the rollers 215 may be in plastic material, and they may preferably be in a low-friction material adapted to absorb vibrations, or at least include a band in such a material.
  • the drum 105 rotatably lies on the four rollers 215 ; in particular, the two rollers 215 located at the front of the machine engage the front circumferential groove 110a formed in the exterior surface of the drum 105 , whereas the two rollers 215 located at the rear of the machine engage the rear circumferential groove 110b .
  • the two grooves 110a and 110b form respective guides for the rollers 215 .
  • the front and rear panels 120 and 130 are mounted to and supported by the basement 115 , as depicted in Figures 6 and 7 , for example by means of screws or similar means.
  • the brackets 205a , 205b , 205c and 205d may be exploited for mounting the panels to the plastic basement.
  • the plastic basement that is used to guide the drying air flow is exploited as the support element of the rollers that in turn rotatably support the drum.
  • An advantage of the present invention is that it is possible to perform intermediate functional tests during the drier manufacturing process, because for the rotation of the drum it is not necessary to fully assemble the drier; in particular, the panels of the machine cabinet need not be mounted.
  • the cabinet panels can be assembled essentially at the end of the manufacturing, with less risks of scraping or other aesthetical defects.
  • the machine assembly are also made easier and faster, and service or maintenance of the drier are also facilitated.
  • Another advantage is that since the support of the drum is entrusted to the plastic basement, vibrations deriving from the rotation of the drum are effectively damp.
  • roller pins formed integrally, in a single piece with the plastic basement, the number of dryer components is reduced, and this is advantageous in terms of manufacturing costs, inventory management, assembly operations.
  • rollers may be provided for supporting the drum; for instance, one of the two front rollers, or one of the two rear rollers may be omitted (in this case, the remaining roller is preferably positioned at the middle of the basement 115 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP08102753.4A 2008-03-19 2008-03-19 Tumble dryer Active EP2103732B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08102753.4A EP2103732B1 (en) 2008-03-19 2008-03-19 Tumble dryer
EP12002521.8A EP2476795B1 (en) 2008-03-19 2008-03-19 Tumble dryer
PL12002521T PL2476795T3 (pl) 2008-03-19 2008-03-19 Suszarka bębnowa
RU2009110047/12A RU2486300C2 (ru) 2008-03-19 2009-03-19 Барабанная сушильная машина

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08102753.4A EP2103732B1 (en) 2008-03-19 2008-03-19 Tumble dryer

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP12002521.8A Division EP2476795B1 (en) 2008-03-19 2008-03-19 Tumble dryer
EP12002521.8 Division-Into 2012-04-06

Publications (2)

Publication Number Publication Date
EP2103732A1 EP2103732A1 (en) 2009-09-23
EP2103732B1 true EP2103732B1 (en) 2013-09-25

Family

ID=39849190

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12002521.8A Revoked EP2476795B1 (en) 2008-03-19 2008-03-19 Tumble dryer
EP08102753.4A Active EP2103732B1 (en) 2008-03-19 2008-03-19 Tumble dryer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12002521.8A Revoked EP2476795B1 (en) 2008-03-19 2008-03-19 Tumble dryer

Country Status (3)

Country Link
EP (2) EP2476795B1 (ru)
PL (1) PL2476795T3 (ru)
RU (1) RU2486300C2 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409145A (zh) * 2018-04-28 2019-11-05 无锡小天鹅电器有限公司 衣物处理装置

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
IT1396410B1 (it) * 2009-10-30 2012-11-19 Indesit Co Spa Macchina asciugatrice per panni.
EP2519683A1 (en) * 2009-12-31 2012-11-07 Arçelik Anonim Sirketi A laundry dryer comprising an integrated plastic base unit
EP2423370B1 (en) * 2010-08-24 2013-04-17 Electrolux Home Products Corporation N.V. Rotary-drum laundry dryer
EP2458072A1 (en) * 2010-11-29 2012-05-30 Electrolux Home Products Corporation N.V. Laundry dryer
KR101919887B1 (ko) * 2012-05-15 2018-11-19 엘지전자 주식회사 의류건조기
EP2843116A1 (en) * 2013-08-27 2015-03-04 Electrolux Appliances Aktiebolag Rotary-drum laundry dryer
EP2843117A1 (en) * 2013-08-27 2015-03-04 Electrolux Appliances Aktiebolag Rotary-drum laundry dryer
EP2843114B1 (en) * 2013-08-27 2018-05-02 Electrolux Appliances Aktiebolag Rotary-drum laundry dryer
EP2843115B1 (en) * 2013-08-27 2018-05-16 Electrolux Appliances Aktiebolag Rotary-drum laundry dryer
EP2990519B1 (en) * 2014-08-29 2019-10-30 Electrolux Appliances Aktiebolag Laundry dryer
KR102369585B1 (ko) * 2014-12-19 2022-03-04 엘지전자 주식회사 의류처리장치
CN106192324A (zh) * 2015-04-30 2016-12-07 无锡小天鹅股份有限公司 用于衣物处理装置的支承结构及具有其的衣物处理装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409145A (zh) * 2018-04-28 2019-11-05 无锡小天鹅电器有限公司 衣物处理装置
CN110409145B (zh) * 2018-04-28 2021-11-02 无锡小天鹅电器有限公司 衣物处理装置

Also Published As

Publication number Publication date
RU2009110047A (ru) 2010-09-27
EP2103732A1 (en) 2009-09-23
PL2476795T3 (pl) 2020-05-18
EP2476795A1 (en) 2012-07-18
RU2486300C2 (ru) 2013-06-27
EP2476795B1 (en) 2019-10-30

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