EP0136491A2 - Lagerungs- und Dichtungsanordnung für die Trommel eines Wäschetrockners - Google Patents

Lagerungs- und Dichtungsanordnung für die Trommel eines Wäschetrockners Download PDF

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Publication number
EP0136491A2
EP0136491A2 EP84109571A EP84109571A EP0136491A2 EP 0136491 A2 EP0136491 A2 EP 0136491A2 EP 84109571 A EP84109571 A EP 84109571A EP 84109571 A EP84109571 A EP 84109571A EP 0136491 A2 EP0136491 A2 EP 0136491A2
Authority
EP
European Patent Office
Prior art keywords
drum
support
collar
housing
bearing
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.)
Granted
Application number
EP84109571A
Other languages
English (en)
French (fr)
Other versions
EP0136491A3 (en
EP0136491B1 (de
Inventor
Franco Del Frate
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Priority to AT84109571T priority Critical patent/ATE44780T1/de
Publication of EP0136491A2 publication Critical patent/EP0136491A2/de
Publication of EP0136491A3 publication Critical patent/EP0136491A3/en
Application granted granted Critical
Publication of EP0136491B1 publication Critical patent/EP0136491B1/de
Expired 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
    • 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
    • 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 

Definitions

  • the present invention generally relates to a laundry dryer provided with a rotatable drum adapted to contain the laundry to be dried and supported in a sealing manner within an outer housing of the machine.
  • conventional laundry drying machines are provided with a drum adapted to permit the passage of a drying air flow therethrough and formed of a cylindrical peripheral wall and two end walls, a forward and a rearward one, each of which may be supported within the housing of the machine.
  • the forward end wall is formed with a circular opening surrounded by a raised rim portion adapted to be rotatably received in a circular support element secured to the front wall of the housing and provided on its outer periphery with fixed roller and/or frictional bearing elements, for example rollers, bearing shells or the like formed of a low-friction material.
  • a sealing gasket formed of felt or another low-friction material capable of being resiliently compressed in the radial direction into engagement with the edge of the drum by means of annular elements formed of rubber or a synthetic foam material so as to prevent the circulated hot air from escaping from the drum towards the housing of the machine. Due to the inevitable friction with the front end wall of the drum, the sliding support or bearing elements are worn, at times even in a non-uniform manner, resulting in a progressively irregular rotation of the drum.
  • the edge portion of the drum and the bearing elements there is no longer a continuous contact between the edge portion of the drum and the bearing elements, resulting in a non-uniform contact also of the sealing elements, permitting the drying air to escape from the drum so as to correspondingly reduce the thermal efficiency of the machine.
  • the irregular contact may result in the laundry getting caught between the drum and the bearing elements, with the resultant danger of the laundry being damaged.
  • the resilient annular elements made of rubber or a foamed synthetic material and used for radially biasing the sealing elements into engagement with the surface of the drum may be unable to produce a sufficient oscillation of the sealing elements for the latter to remain in contact with the irregularly rotating drum.
  • the material of the annular biasing elements may be subjected to degradation so as to lose the resilient properties required for functioning properly.
  • the manufacturing tolerances between the stationary elements and the movable parts as well as a possible overloading of the drum with laundry to be dried which may prejudice the regular rotation of the drum and thus the proper function of the supporting and bearing components.
  • Another object of the invention is the provision of a laundry drying machine of the type defined above provided with sealing means which are not readily degraded and designed to ensure a continuous and reliable contact with an associated portion of the drum, so as to provide an air-tight seal.
  • asupport and sealing assembly for the drum of a laundry dryer comprising a housing in which said drum for containing the laundry to be dried is mounted for rotation about a horizontal axis, said drum having a cyclindrical peripheral wall, a rear end wall mounted within the housing of the machine, and a front end wall formed with a central opening supported in a corresponding collar disposed interiorly of said housing and provided with bearing means for.rotatably mounting said drum and sealing means for retaining the drying air stream passing through said drum, said support and sealing assembly being characterized in that said support collar for said front end wall of said drum comprises a portion projecting into said opening of said drum and adapted to accommodate fixed bearing means and resilient bearing means oscillating in the radial dircection of said drum, and a portion adapted to accommodate air sealing means displaceable in a direction parallel to the axis of said drum, said bearing means and said sealing means being adapted to cooperate respectively with a horizontal rim portion and a rearwardly curved end portion of
  • a laundry dryer generally indicated at 4 in fig. 1 is provided with a support and sealign assembly according to the invention, and itself comprises an outer housing 5 with a cylindrical drum 6 mounted therein for rotation about a horizontal axis.
  • Drum 6 is formed of a peripheral wall 7 and two end walls 8, a front end wall 8 being of annular shape and formed with a central opening 10 corresponding to the charging window of laundry dryer 4, and a rear end wall 9, both end walls being rotatably supported within housing 5.
  • rear end wall 9 may be provided with a central stub axle (not shown) cooperating with bearing means (likewise not shown) secured to the interior rear wall of housing 5.
  • Opening 10 of front end wall 8 is surrounded by an upstandign rim projecting towards the front wall of housing 5 and having a horizontally extending rim portion 11 terminating in a rearwardly curved end portion 12.
  • a circular support collar 13 Secured to .the interior front wall surface of housing 5 at a position facing the rim of opening 10 of front end wall 8 is a circular support collar 13 having a configuration similar to the letter "S" in cross-section as shown in fig. 3.
  • This radial cross-sectional configuration of collar 13 is composed of an inner portion 14 disposed interiorly of opening 10 of front end wail 8 at a location underlying the rectilinear rim portion 11, and an outer portion 15 located opposite rearwardyl curved end portion 12 of the above mentioned rim.
  • Inner portion 14 of collar 13 accommodates three bearing members 16, 17 and 18 of a low-friction material (fig. 2) for rotatably retaining therebetween rim portion 11 of drum 6.
  • Two such bearing memebrs 16 and 17 are located at the upper arcuate portion of collar 13 in symmetrical relationship with respect to the vertical axis x-x of drum 6; while the third bearing member 18 is disposed at the lower portion of collar 13 in alignment with axis x-x of drum 6.
  • Lower bearing member 18 is of the fixed type usually employed in laundry dryers, while the two upper bearing members 16 and 17 are mounted for resilient oscillation in a substant- tially radi ? .! direction within corresponding openings 19 formed in inner portion 14 of collat 13 opposite horizontal rim portion 11 of drum 6.
  • Each upper bearing member 16, 17 is resiliently biased towards rim portion 11 of drum 6 by a pair of compression springs 20 disposed between the radially inner surface of the respective bearing member 16 or 17 and a seat 21 formed at the bottom of inner portion 14 of collar 13.as shown in fig. 3.
  • upper bearing members 16, 17 are formed with a projecting shoulder 22 adapted to seat on the interior rims of opening 19 for preventing the respective bearing member from escaping from support collar 13 as long as they are not retained therein by rim portion 11 of drum 6.
  • the force of springs 20 is suitably calculated for compensating the compressive loads exerted by the weight of the drum and the laundry contained therein and by the reactive force of a transmis- si Q n belt extending between a motor 23 and drum 6 of the laundry dryer.
  • annular element 24 made of felt or a similar material and having an inverted C-shaped cross-sectional configuration, the free end portions of which are secured to a circular support 25 slidingly received in a horizontal direction within outer collar portion 15 as shown in fig. 3.
  • slidable support 25 into collar portion 15 is facilitated by chamfered surface portions 27 formed along the edge 26 of collar 13.
  • circular support 25 is provided with a plurality of horizontally projecting pins 29 each surrounded by a compression spring 30 for biasing support 25 towards the rim of drum 6 so as to compressively engage annular felt element 24 with rearwardly curved end portion 12 ot the rim of drum 6.
  • edge 26 of collar 13 is formed with a plurality of inwards directed stop projections 28 adjacent chamfered surfaces 27 for retaining support 15.
  • the resilient bearing members 16 and 17 are effective to compensate the varying charging conditions and orientation of drum 6 so as to keep the latter aligned with its ideal axis of rotation in cooperation with the fixed lower bearing member 18 which has for its main function the centering of the rotating drum.
  • the upper bearing members 16, 17 are continually kept in contact with the rim of drum 6 by the combined action of the associated pairs of springs 20. In this manner they contribute equally to the support of the drum resulting in their being worn in a more uniform manner, whereby their useful life is extended.
  • the laundry dryer according to the invention derives further advantages from the employ of a spring-biased support for the air-tight sealing gasket, which support is not subjected to noticeable degradation and is capable of moving over a sufficient distance for reliably keeping the sealing gasket 24 in continuous contact with the end portion 12 of the rim of the drum 6.
  • This particular feature in combination with the described configuration of the felt gasket ensure an effective air-tight seal even in the case of excessive manufacturing tolerances between stationary and moving components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Centrifugal Separators (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
EP84109571A 1983-09-02 1984-08-10 Lagerungs- und Dichtungsanordnung für die Trommel eines Wäschetrockners Expired EP0136491B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109571T ATE44780T1 (de) 1983-09-02 1984-08-10 Lagerungs- und dichtungsanordnung fuer die trommel eines waeschetrockners.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3404183U 1983-09-02
IT8334041U IT8334041V0 (it) 1983-09-02 1983-09-02 Dispositivo di supporto e di tenuta per il cesto di asciugabiancheria.

Publications (3)

Publication Number Publication Date
EP0136491A2 true EP0136491A2 (de) 1985-04-10
EP0136491A3 EP0136491A3 (en) 1987-04-22
EP0136491B1 EP0136491B1 (de) 1989-07-19

Family

ID=11238953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109571A Expired EP0136491B1 (de) 1983-09-02 1984-08-10 Lagerungs- und Dichtungsanordnung für die Trommel eines Wäschetrockners

Country Status (4)

Country Link
EP (1) EP0136491B1 (de)
AT (1) ATE44780T1 (de)
DE (1) DE3479043D1 (de)
IT (1) IT8334041V0 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351608A1 (de) * 1988-07-22 1990-01-24 INDUSTRIE ZANUSSI S.p.A. Wäschetrockner
DE102005009230B4 (de) * 2005-02-25 2008-12-24 Jensen-Senking Gmbh Trocknungsanlage mit einer Trocknerdichtung und Zentriermitteln
WO2011080214A1 (en) 2009-12-31 2011-07-07 Arcelik Anonim Sirketi A laundry dryer with sliding bearings
WO2013064568A1 (en) * 2011-11-04 2013-05-10 Arcelik Anonim Sirketi A laundry dryer comprising a transportation safety member
EP2843113A1 (de) * 2013-08-27 2015-03-04 Electrolux Appliances Aktiebolag Wäschetrockner mit Drehtrommel
CN112323426A (zh) * 2020-11-02 2021-02-05 安徽金帅洗衣机有限公司 转筒机构、干衣机以及干衣机装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034221A (en) * 1957-10-11 1962-05-15 Gen Motors Corp Clothes drier having absorbent bed
US3816942A (en) * 1972-07-24 1974-06-18 Maytag Co Bulkhead seal for clothes dryer
US3875686A (en) * 1974-01-28 1975-04-08 Schlegel Mfg Co Seal for clothes dryer
AU506324B2 (en) * 1976-04-15 1979-12-20 Rinnai Kabushiki Kaisha Tumbler dryer
JPS57142298A (en) * 1981-02-27 1982-09-02 Tokyo Shibaura Electric Co Drier

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351608A1 (de) * 1988-07-22 1990-01-24 INDUSTRIE ZANUSSI S.p.A. Wäschetrockner
DE102005009230B4 (de) * 2005-02-25 2008-12-24 Jensen-Senking Gmbh Trocknungsanlage mit einer Trocknerdichtung und Zentriermitteln
WO2011080214A1 (en) 2009-12-31 2011-07-07 Arcelik Anonim Sirketi A laundry dryer with sliding bearings
WO2013064568A1 (en) * 2011-11-04 2013-05-10 Arcelik Anonim Sirketi A laundry dryer comprising a transportation safety member
EP2843113A1 (de) * 2013-08-27 2015-03-04 Electrolux Appliances Aktiebolag Wäschetrockner mit Drehtrommel
CN112323426A (zh) * 2020-11-02 2021-02-05 安徽金帅洗衣机有限公司 转筒机构、干衣机以及干衣机装置
CN112323426B (zh) * 2020-11-02 2022-12-16 合肥荣事达电子电器集团有限公司 转筒机构、干衣机以及干衣机装置

Also Published As

Publication number Publication date
IT8334041V0 (it) 1983-09-02
DE3479043D1 (en) 1989-08-24
EP0136491A3 (en) 1987-04-22
EP0136491B1 (de) 1989-07-19
ATE44780T1 (de) 1989-08-15

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