EP4163433A1 - Tambour pour sèche-linge et sèche-linge - Google Patents

Tambour pour sèche-linge et sèche-linge Download PDF

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Publication number
EP4163433A1
EP4163433A1 EP22195892.9A EP22195892A EP4163433A1 EP 4163433 A1 EP4163433 A1 EP 4163433A1 EP 22195892 A EP22195892 A EP 22195892A EP 4163433 A1 EP4163433 A1 EP 4163433A1
Authority
EP
European Patent Office
Prior art keywords
drum
layer
insulating element
ring
range
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.)
Pending
Application number
EP22195892.9A
Other languages
German (de)
English (en)
Inventor
Vladimir Valenta
Filip Sklenar
Slava Skalova
Horst Benning
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP4163433A1 publication Critical patent/EP4163433A1/fr
Pending 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 
    • 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

Definitions

  • the invention relates to a drum for a tumble dryer, in which the drum can be mounted to rotate about a horizontal or inclined axis, comprising a cylindrical shell, preferably made of sheet metal, which is delimited by two opposite end walls; an insulating element, which is attached to the outside of the drum.
  • Dryers with a rotatable drum through which a heated stream of air flows in order to dry the laundry located therein are known for drying wet or damp laundry items.
  • the damp laundry items are whirled around by the rotation of the drum so that the drying air flows through them well, whereby moisture is removed from the laundry items.
  • the drum usually has entrainment ribs in order to lift the items of laundry in the circumferential direction, whereby they become detached from the drum shell in the upper region due to their gravity and impinge on the drum shell at the bottom.
  • the items of laundry are most effectively exposed to the drying air when they fall or whirl around inside the drum.
  • a drum for a tumble dryer which, for improved entrainment, has a structure of outward curvatures directed towards the outside of the drum. This also protects the laundry items, since they can slide along with very little friction on an air cushion caused by partial air turbulence in the area of the curvatures. In this case, the bulges are structured uniformly, so that the laundry movement is caused in the circumferential direction of the drum. It can happen that the items of laundry get tangled up in a ring, so that there is a rolling movement with less mixing with the drying air.
  • the invention is therefore based on the object of providing a drum for a tumble dryer which has improved noise properties.
  • the main advantage of the drum according to the invention is that improved soundproofing of the drum is achieved if it is arranged approximately horizontally or inclined and is rotated at a speed customary for the drying process, for example 20 to 70 rpm, and if drying air flows through it. Furthermore, the drum is protected mechanically because vibrations in the jacket are avoided or at least reduced compared to the known solutions.
  • the drum according to the invention comprises the insulating element, which comprises at least two layers, the first layer comprising vibration-absorbing material or consisting of such a material and lying on the surface of the casing and the second layer consisting of an elastic material and lying on the first layer.
  • This embodiment of the insulating element ensures that the first layer is free of fastening structures and is designed to be stretchable only slightly or not at all in the direction of the surface edges.
  • the first layer is preferably designed as a flexible mat and is geared to the acoustic insulation properties.
  • the attachment to the outer surface of the drum shell is provided by the elastic sheet attached thereto.
  • the second layer is designed to be stretchable, with the hold being achieved by means of the restoring force of the pre-stretched layer when the second layer is slipped or placed over the first layer.
  • the first layer is then pressed onto the drum shell and held in place.
  • the first layer and the second layer In order to attach damping elements to the rear wall or end wall of the drum, the first layer and the second layer must be shaped accordingly and their geometry must be adapted.
  • the density of the first layer is lower than the density of the second layer, with the first layer being designed to absorb vibrations that affect the surface of the layer from the drum shell.
  • the first layer is a woven fabric, for example a fleece material or a fiber material, which comprises a mesh of fibers with spaces between the fibers.
  • a porous material such as closed-pore or open-pore foam can be used.
  • the first layer is designed as a flat mat or strip with a thickness in the range from 1 mm to 5 mm, preferably 1.5 mm to 3 mm.
  • the material of the first layer preferably has a density with a value in the range from 100 g/m2 to 400 g/m2 with a thickness of 2 mm.
  • the thickness of the second layer is in the range of 0.2 mm to 1 mm, preferably 0.4 mm to 0.8 mm. It is therefore thinner and only serves to hold or press the first layer against the drum shell. Due to the thickness mentioned, it is not very bulky, so that no extra space has to be taken into account within the dryer housing.
  • the insulating element is ring-shaped, with the first layer and the second layer each being designed as a strip-shaped ring and being attached around the casing.
  • the circumference of the annular second layer is smaller than the outer circumference of the casing.
  • the annular second layer is stretched and rests on the first layer under restoring force in order to press it on the outside of the jacket.
  • the circumference in the relaxed state can be 2% to 20%, preferably 5% to 10%, smaller than the circumference of the drum. Due to the restoring force of the stretched second layer, the insulating element is held on the drum shell.
  • the layers are dimensioned in terms of their width in such a way that the first layer projects beyond the second layer on the two opposite sides, in each case preferably by at least 2 mm, preferably no more than 10 mm.
  • the second layer does not come into direct contact with the drum shell.
  • the vibration-damping properties of the damping element are not impaired because the second layer, which is not tailored to sound-insulating properties, is not excited by the vibrations of the drum shell.
  • the width of the first layer has a value in the range between 6 cm and 20 cm, preferably 8 cm and 14 cm.
  • the first layer and the second layer are preferably attached in the area of the central peripheral line of the drum.
  • the drum comprises two ring-shaped insulating elements, the distance between the insulating elements being in the range of 4 cm to 20 cm, preferably 6 to 12 cm.
  • the first insulating ring is attached in the front half of the casing, preferably in the middle area of the front half, with the second insulating ring being attached in the rear half of the casing, preferably in the middle area of the rear half.
  • the second layer consists of elastomer, silicone or silicone rubber or it comprises at least one such material.
  • the at least one ring-shaped insulating element is attached by means of contact pressure and without adhesive due to the stretched second layer attached to the drum shell.
  • the contact surface of the first layer which includes the fleece material or foam material, is therefore free of adhesive.
  • the insulating properties are therefore not impaired by adhesive penetrating into the interior of the layer.
  • the material separation is easier in the event of scrapping, because the insulating element is completely removed from the drum shell by pulling it off. There are no residues of adhesive or residues of the first layer on the drum shell.
  • the drum For household dryers that allow a load of 6 to 10 kg of dry laundry, it is advisable for the drum to have a diameter in the range of 50 to 70 cm, a drum volume of around 45 l to 75 l and a depth in the range of 30 cm to 70 cm. For commercial dryers, the drum is larger depending on the required maximum load.
  • the invention also relates to a tumble dryer with a housing, a drum rotatably mounted in the housing as described above, a process air duct for guiding the process air into or through the drum, and a unit for generating the process air flow and for driving the drum.
  • the tumble dryer also has a control device which controls the unit or the drive motor for the drum, the heating device and the fan depending on the predetermined drying process.
  • the control device is connected to an operating and display device, by means of which the user can make entries for program selection or further adjustments to the sequences.
  • a dryer 1 is shown in a purely schematic representation with a housing 2 and a drum 3 arranged therein.
  • the position and direction information relates to the operational set-up position of the dryer 1.
  • the drum 3 is rotatably mounted by means of an almost horizontal or horizontal axis of rotation 13, so that the items of laundry 8 are whirled around in it during the drying process, while the air or by means of the heating device 6 heated air 12 flows through the drum 3.
  • the housing 2 has a loading opening 5 through which the interior of the drum 3 can be reached.
  • the loading opening 5 can be closed by means of a door 4 .
  • the air flow 12 is generated by a blower 14 and blown into the drum 3 via the process air duct 7 .
  • a condensation device 11 is also provided, which removes the moisture from the process air 12 and feeds the condensation liquid to a collection container 9 .
  • the blower 5 is driven in rotation by a motor 10 and the drum 3 by means of a drive belt 16 .
  • a separate motor can also be provided for the blower 14 .
  • the dryer can also contain a heat pump with a compressor, evaporator, condenser and capillary, with the condensation device 11 being the evaporator and the heating device 6 being the condenser.
  • the dryer also includes a control device 18 which, depending on the desired drying program, controls the actuators, such as the drive motor 10, the heating device 6 or the compressor of a heat pump, ie activates and deactivates them.
  • a control device 18 which, depending on the desired drying program, controls the actuators, such as the drive motor 10, the heating device 6 or the compressor of a heat pump, ie activates and deactivates them.
  • the drum 3 which consists of a jacket 19 and two opposite end walls 20a, 20b.
  • the front end wall 20a is provided with a loading opening, the rear end wall 20b being provided with openings in order to provide the fluid connection for the process air 12 to the process air duct.
  • the drum 3, in particular the casing 19, is made of sheet metal.
  • Fig.3 shows a schematic sectional view of the arrangement of the individual layers 31, 32 of the insulating element on the outside 19b of the drum shell 19.
  • the first layer 31 consists of vibration-damping or noise-damping material such as fabric, fleece, foam or a combination thereof.
  • This first layer 31 is about 2 to 4 mm thick and lies directly on the outer surface 19b of the drum shell 19.
  • the second layer 32 is thinner, about 0.5 to 1 mm thick, is made of a stretchable material and is designed as a ring , which is pulled stretched over the first layer 31. Due to the restoring force of the stretched ring 32 of the second layer, the first layer 31 is pressed against the drum wall and thereby fixed.
  • the layers 31, 32 are designed in the form of strips and have a width which corresponds to 1/8 to 1/2 of the depth of the jacket 19, preferably 1/5 to 1/4 of the depth of the jacket 19. It can also be seen that the first layer 31 is wider than the second layer 32, so that the first layer 31 does not touch the surface 19b of the drum casing 19.
  • FIG 4 shows an embodiment of the drum 3 with two annular insulating elements 30, 40.
  • the structure and the fixation on the surface of the shell 19 is done in the same way as described above.
  • the first insulating element 30 is located on the surface 19b of the front half of the jacket 19.
  • the second insulating element 40 is located on the surface 19b of the rear half of the jacket 19.
  • the central area is free of insulating elements, so that in this area the drive belt 16 rests on the outer surface 19b of the jacket 19 and the drum 3 can rotate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP22195892.9A 2021-10-05 2022-09-15 Tambour pour sèche-linge et sèche-linge Pending EP4163433A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021125796.4A DE102021125796A1 (de) 2021-10-05 2021-10-05 Trommel für einen Wäschetrockner und Wäschetrockner

Publications (1)

Publication Number Publication Date
EP4163433A1 true EP4163433A1 (fr) 2023-04-12

Family

ID=83355301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22195892.9A Pending EP4163433A1 (fr) 2021-10-05 2022-09-15 Tambour pour sèche-linge et sèche-linge

Country Status (2)

Country Link
EP (1) EP4163433A1 (fr)
DE (1) DE102021125796A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1541741A2 (fr) 2003-12-09 2005-06-15 Lg Electronics Inc. Sèche-linge.
EP1293594B1 (fr) 2001-09-13 2006-04-12 Miele & Cie. KG un sèche-linge avec un Tambour
DE102008026453A1 (de) * 2008-06-03 2009-12-10 Miele & Cie. Kg Wäschebehandlungsmaschine insbesondere Waschmaschine mit einem Kunststofflaugenbehälter
EP2192222A1 (fr) * 2008-11-27 2010-06-02 BSH Bosch und Siemens Hausgeräte GmbH Couche d'isolation et tambour pour un appareil de séchage
DE102018101688A1 (de) * 2018-01-25 2019-07-25 Carcoustics Techconsult Gmbh Wäschetrommel mit einer Isolierung für eine Wäschebehandlungsmaschine
CN210797003U (zh) * 2019-04-12 2020-06-19 青岛海尔滚筒洗衣机有限公司 衣物处理设备的衣物处理筒及衣物处理设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593635B1 (ko) 2001-07-19 2006-06-28 주식회사 엘지이아이 가전기기용 드럼장치
US20220032581A1 (en) 2020-07-29 2022-02-03 Whirlpool Corporation Laundry drum insulation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1293594B1 (fr) 2001-09-13 2006-04-12 Miele & Cie. KG un sèche-linge avec un Tambour
EP1541741A2 (fr) 2003-12-09 2005-06-15 Lg Electronics Inc. Sèche-linge.
DE102008026453A1 (de) * 2008-06-03 2009-12-10 Miele & Cie. Kg Wäschebehandlungsmaschine insbesondere Waschmaschine mit einem Kunststofflaugenbehälter
EP2192222A1 (fr) * 2008-11-27 2010-06-02 BSH Bosch und Siemens Hausgeräte GmbH Couche d'isolation et tambour pour un appareil de séchage
DE102018101688A1 (de) * 2018-01-25 2019-07-25 Carcoustics Techconsult Gmbh Wäschetrommel mit einer Isolierung für eine Wäschebehandlungsmaschine
CN210797003U (zh) * 2019-04-12 2020-06-19 青岛海尔滚筒洗衣机有限公司 衣物处理设备的衣物处理筒及衣物处理设备

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Publication number Publication date
DE102021125796A1 (de) 2023-04-06

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