EP3162948B1 - Appareil électroménager adapté à effectuer au moins un cycle de séchage, telle qu'une machine à laver/à sécher ou machine à sécher - Google Patents

Appareil électroménager adapté à effectuer au moins un cycle de séchage, telle qu'une machine à laver/à sécher ou machine à sécher Download PDF

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Publication number
EP3162948B1
EP3162948B1 EP15192295.2A EP15192295A EP3162948B1 EP 3162948 B1 EP3162948 B1 EP 3162948B1 EP 15192295 A EP15192295 A EP 15192295A EP 3162948 B1 EP3162948 B1 EP 3162948B1
Authority
EP
European Patent Office
Prior art keywords
tub
casing
household appliance
drying
air
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
EP15192295.2A
Other languages
German (de)
English (en)
Other versions
EP3162948A1 (fr
Inventor
William PAOLINI
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.)
Whirlpool EMEA SpA
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Whirlpool EMEA SpA
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Publication date
Application filed by Whirlpool EMEA SpA filed Critical Whirlpool EMEA SpA
Priority to EP15192295.2A priority Critical patent/EP3162948B1/fr
Publication of EP3162948A1 publication Critical patent/EP3162948A1/fr
Application granted granted Critical
Publication of EP3162948B1 publication Critical patent/EP3162948B1/fr
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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
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • 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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment

Definitions

  • the present invention refers to a household appliance adapted to perform at least a drying cycle, such as a washing/drying machine or a drying machine.
  • Drying machines and washing/drying machines comprise a rotating drum in which the items to be dried are placed.
  • the drum is rotatably mounted in a tub.
  • a recirculation line To perform the drying through a recirculation line, the air is extracted from the tub, treated and reintroduced therein.
  • the recirculation line includes:
  • the tub is usually made of three structural components: a tub body; a front annular component, mounted at a front section of the tub body; a rear component, mounted at a rear section of the tub body.
  • Tubs of different capacities are often made available.
  • the different capacities are typically obtained by maintaining the radius of the tub structure, and by increasing the axial length of the tub body or the front annular component.
  • the recirculation line or drying system has to be modified accordingly, so as to adapt to the new dimension of the tub.
  • blowing units of increased length In practical terms, the length of the blowing unit, and in particular of the conduit arranged downstream of the impeller, is increased so as to match the increase of the tub axial dimension.
  • Document GB 2 181 222 A discloses a machine for washing and drying domestic laundry according to the preamble of claim 1.
  • This prior art machine comprises a cabinet containing a stationary cylindrical tank for holding washing liquor and a rotatable perforated drum within the tank in which the laundry is washed and subsequently dried.
  • a detergent distributor is arranged above the tank.
  • For drying the laundry a stream of hot air produced by a high-speed fan and a heater is discharged into the drum through the front of the tank from a duct which extends from the heater across the top of the tank through the narrow space between the tank and the detergent distributor and down the front of the tank between the tank and the front wall of the cabinet.
  • the duct has a flattened shape with an elongate cross-section and is made of a heat-resistant elastomeric material, for example, a silicone rubber, so as to be capable of absorbing any shocks caused by vibratory contact between the tank and the duct as the drum accelerates at the beginning of the spinning operation.
  • a heat-resistant elastomeric material for example, a silicone rubber
  • Document EP 2 843 099 A1 discloses a laundry washing-drying machine comprising: a casing; a tub suspended in the casing; an elastically deformable bellow having a ring shaped main portion sealingly connected to the casing and to the tub, at a door of the machine; a projection portion, made in one piece with the main portion and radially extending from the main portion to a distal end; a dry air duct, supported in the casing and fixedly connected to an air drying unit, and having a downstream end; a bellow duct formed within the projection portion of the bellow, from an inlet mouth, formed at the distal end of the projection portion and connected to the downstream end of the dry air duct, to an outlet mouth, formed in the main portion of the bellow, at the projection portion, and open into the tub.
  • the projection portion of the bellow has a substantially flat shape, with two major sides and two minor sides, and the bellow duct comprises at least a protrusion, internally formed in one of the major sides.
  • Document EP 1 353 004 A1 discloses a washing machine provided with a drying circuit which includes a fan made up of an impeller enclosed by a case and driven by a motor to generate an air flow through the machine drum and the circuit, and also a nozzle fed through an electrovalve and arranged in said case to emit a water jet suitable to clean the impeller at the end of the drying cycle.
  • the jet is preferably oriented in the direction opposite with respect to direction of rotation of the impeller which is mounted idle on the motor, so that the jet itself causes the counter-rotation thereof during the cleaning step.
  • Document US 2014/230270 A1 discloses a drum washing machine that includes a cabinet, a tub arranged within the cabinet, a drum rotatably arranged within the tub, a drying unit which heats and circulates air discharged from the tub so as to dry laundry within the drum, the drying unit including a drying duct equipped with a heater to heat air therein, a circulation passage provided such that air circulates between the tub and the inside of the drying duct, and a suction member which is coupled to one side of the drying duct and introduces air outside the tub onto the circulation passage, and a discharge member which is coupled to one side of the tub and discharges part of the air in the circulation passage to the outside of the cabinet.
  • Document EP 2 039 819 A1 discloses a washer-drier machine comprising a washing tank, a basket, a washing water delivery system with a plurality of washing flow paths extending from one or more supply, through a detergent tray, to the washing tank, a drying circuit with a first suction unit, an air-to-air heat exchanger and a heating unit, said drying circuit being suitable to convey a drying air flow through said basket, a cooling circuit with a second suction unit suitable to intake a cooling air flow from the environment and blow it through the air-to-air heat exchanger to cool the latter.
  • the washer-drier machine further comprises a fluff-rinse duct that is configured to convey a flow of fluff-rinse liquid to the drying circuit in order to remove the fluff therein.
  • Document JP 2000/189691 A discloses a drum type washer wherein in a front plate part of a water tank, an opening is formed. The opening and a washing inlet/outlet in a case are communicated with/connected to each other by a connection member.
  • a warm air supply port of a warm air supply device is provided at the connection member.
  • a balance ring is provided at a circumferential wall part of the drum.
  • a first seal wall part is formed on the front plate part of the drum to be positioned more on the warm air supply port than the balance ring, and a second seal wall part to compose a maze-like seal part with the first seal wall part is formed on the front plate part of the water tank.
  • WO 2009/083396 A1 discloses a washing machine comprising a bellows disposed between the tub and the body, with one end fastened to the loading port and the other end to the tub entry orifice, and having a fold for dampening the oscillations of the tub.
  • Document US 2010/257902 A1 discloses a washing machine with a drying function, capable of performing a washing program and a drying program, comprising a cabinet, a tub in the cabinet, a water inlet for feeding water to the tub during the washing program, the water inlet being connected to an anti-siphoning device, and a water trap placed in the connection between the water inlet and the anti-siphoning device.
  • the basic idea of the present invention is, upon modifications of the axial length of the tub, to keep substantially unchanged the length of the blowing unit and modify instead the length of the connection conduit interposed between the blowing unit and the annular gasket mounted on the front annular component of the tub.
  • the invention refers to a household appliance adapted to perform at least a drying cycle, said appliance comprising:
  • connection conduit has a front end connected to said annular gasket and a rear end connected to said blowing unit, wherein said rear end is located over said tub body.
  • connection conduit faces an opening formed in said annular shaped gasket so that air flowing from said blowing unit is inserted in said tub through said opening.
  • connection conduit and said annular shaped gasket are made in one piece.
  • said drying system further comprises a condenser adapted to receive a flow of wet air from said tub and to make it condense and obtain dried air, said blowing unit being interposed between said condenser and said connection conduit.
  • said blowing unit comprises:
  • said casing comprises a first semi-shell and a second semi-shell which are mutually joined to form said casing.
  • said metallic material is metal-sheet.
  • said household appliance further comprises a heating element mounted inside said casing.
  • said casing comprises a scroll surrounding said impeller and a conduit radially extending from said impeller.
  • said heating element is mounted in said conduit.
  • 1 indicates a household appliance adapted to perform at least a drying cycle.
  • the appliance 1 can be a drying machine, adapted to dry linen and/or clothes previously washed by a different machine.
  • the appliance 1 can also be a washer-drier, namely a machine capable of both washing and drying linen and/or clothes.
  • the appliance 1 is also adapted to perform at least a washing cycle.
  • the appliance 1 ( figure 1 ) comprises a drum 2 which can rotate and which is intended to house the items to be dried.
  • the appliance 1 comprises a tub 3, in which the drum 2 is rotatably mounted.
  • the tub 3 comprises a plurality of structural components.
  • Said structural components comprise at least a front annular component 3A and a tub body 3B.
  • the structural components of the tub 3 further comprise a rear component 3C.
  • the tub body 3B has a substantially cylindrical shape, having a front section 3B' and a rear section 3B".
  • the front annular component 3A is mounted at the front section 3B' of the tub body 3B.
  • the rear component 3C is mounted at the rear section 3B" of the tub body 3B.
  • the rear section 3B" is substantially closed by a rear base RB.
  • the rear component 3C comprises a plurality of radial structural supports 3C' extending from a central hub 3C".
  • the appliance 1 comprises a drying system 10 which has an inlet 10a for receiving wet air from the tub 3 and an outlet 10b for providing dried air to be inserted back into the tub 3.
  • a drying system 10 which has an inlet 10a for receiving wet air from the tub 3 and an outlet 10b for providing dried air to be inserted back into the tub 3. This allows the air rich in moisture (following contact with the items to be dried contained in the drum 2 placed in the tub 3) to be taken and reintroduced into the same tub 3 after being dried and heated.
  • the drying system 10 comprises a blowing unit 5, externally mounted on the tub body 3B; the blowing unit 5 is adapted to promote an air flow inside the drying system 10.
  • the blowing unit 5 ( figures 1-3 ) comprises casing 51 and an impeller 59 rotatably mounted into said casing 51 so as to promote the flow of air.
  • the casing 51 is made of metal, preferably of sheet metal.
  • the sheet metal of the casing 51 is preferably steel.
  • the sheet metal can be aluminum- or zinc-coated or electro-galvanized.
  • the sheet metal may be aluminum.
  • the sheet metal of the casing 51 has a thickness of less than 1 millimeter, in particular less than 0.8 mm.
  • the reduced thickness of the sheet metal allows a light structure to be created but which can at the same time provide maximum resistance to strain.
  • the casing 51 comprises a scroll 511 which surrounds the impeller 59 and a conduit 512 which extends from said scroll 511.
  • the conduit 512 houses a heating element 58, e.g. an electrical element, for heating the air before it is fed back into the tub 3.
  • blowing unit 5 is of the centrifugal type.
  • the casing 51 preferably comprises, and is in particular can be made of, a first semi-shell 52 and a second semi-shell 53.
  • the first semi-shell 52 defines an upper portion of the casing 51 whereas the second semi-shell 53 defines a lower position of the same casing 51.
  • the first and the second semi-shell 52, 53 are connected to each other by a seaming.
  • the seaming allows a fast and cheap connection to be obtained, potentially even without the need to use additional interposed gaskets (which would certainly be necessary if, for example, the two semi-shells were connected through threaded connections).
  • the casing 51 is provided with a perimetral flange 54, for example formed by said seaming.
  • the structure of the casing 51 according of the present invention can be the same as the casing disclosed in said European patent application.
  • the impeller 59 can be realized as a fan, mounted inside the casing 51.
  • the impeller 59 is driven in rotation by a respective electric motor 52'.
  • the appliance 1 further comprises a connection conduit 6 adapted to guide the flow of dried air from the outlet 10b of the drying system 10 to the tub 3.
  • connection conduit 6 is associated to an annular shaped gasket 7, arranged around the loading opening 7a of the tub 3 and provided with a passage to let the dried air reach the inside of the same tub 3.
  • connection conduit 6 is made of an elastomeric material, e.g. the same material as the annular gasket 7.
  • connection conduit 6 and the annular gasket 7 are made in one piece.
  • connection conduit 6 extends at least partly over the tub body 3B.
  • connection conduit 6 has a front end 6A connected to the annular gasket 7 and a rear end 6B connected to the blowing unit 5; advantageously, the rear end 6B is located over the tub body 3B.
  • connection conduit 6 and the blowing unit 5 are substantially located over the junction between the front annular component 3A and the tub body 3B. Accordingly, the horizontal part of the connection conduit 6 substantially extends over (i.e. is arranged in a position radially external to) the front annular component 3A, and the blowing unit 5 substantially extends over (i.e. is arranged in a position radially external to) the tub body 3B ( figure 5a ).
  • connection conduit 6 extends also over the tub body 3B, so as to connect with the blowing unit 5 when the axial length of the same tub body 3B is increased ( figure 5b ).
  • appliances having different capacities obtained by varying the axial length of the tub body, can be easily manufactured.
  • a configurable mould for conduits having different lengths can be provided; once the length of the connection conduit 6 has been determined, the mould is properly configured and the suitable conduit is realized.
  • the annular gasket 7 and the connection conduit 6 are preferably made in one piece.
  • the mould is so shaped as to manufacture gaskets always having the same dimensions, integral with conduits having variable lengths.
  • connection conduit 6 faces an opening 7B formed in the annular shaped gasket 7 so that air flowing from the blowing unit 5 is inserted in the tub 3 through said opening 7B.
  • the drying system 10 comprises a condenser 4 that receives a gaseous fluid containing particles of vapor from said tub 3 and that causes at least partial condensation thereof.
  • the inlet 10a of the drying system 10 coincides with the inlet of the condenser 4.
  • the drying system 10 is operated so as to withdraw wet air from the tub 3 through inlet 10a and provide dried hot air at the outlet 10b.
  • the wet air flowing through the inlet 10a is first condensed by condenser 4; then the air passes through the blowing unit 5: the impeller 59 first, and then the conduit 512.
  • the air is also heated by heating element 58. The dried and heated air is then fed back into the tub 3 through the connection conduit 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (10)

  1. Appareil électroménager adapté pour effectuer au moins un cycle de séchage, ledit appareil (1) comprenant :
    a. une cuve (3) dans laquelle un tambour (2) est monté en rotation, ladite cuve comprenant au moins un corps de cuve (3B) et un composant annulaire avant (3A) monté au niveau d'une section avant (3B') dudit corps de cuve (3B) ;
    b. un système de séchage (10), ayant un orifice d'entrée (10a) pour recevoir de l'air humide provenant de ladite cuve (3) et un orifice de sortie (10b) pour fournir de l'air séché à ladite cuve (3), ledit système de séchage (10) comprenant une unité de soufflage (5) montée sur ledit corps de cuve (3B) pour favoriser un écoulement d'air à l'intérieur dudit système de séchage (10) ;
    c. un conduit de raccordement (6) raccordant ladite unité de soufflage (5) et un joint d'étanchéité de forme annulaire (7) monté sur ledit composant annulaire avant (3A) ; moyennant quoi ledit conduit de raccordement (6) s'étend au moins en partie sur ledit corps de cuve (3B),
    caractérisé
    en ce que ledit conduit de raccordement (6) et ledit joint d'étanchéité de forme annulaire (7) sont réalisés d'une seule pièce.
  2. Appareil électroménager selon la revendication 1, dans lequel ledit conduit de raccordement (6) a une extrémité avant (6A) raccordée audit joint d'étanchéité annulaire (7) et une extrémité arrière (6B) raccordée à ladite unité de soufflage (5), dans lequel ladite extrémité arrière (6B) est située sur ledit corps de cuve (3B).
  3. Appareil électroménager selon la revendication 1 ou 2, dans lequel l'extrémité avant (6A) dudit conduit de raccordement (6) fait face à une ouverture (7B) formée dans ledit joint d'étanchéité de forme annulaire (7) de sorte que l'air s'écoulant depuis ladite unité de soufflage (5) soit inséré dans ladite cuve (3) à travers ladite ouverture (7B).
  4. Appareil électroménager selon l'une quelconque des revendications précédentes, dans lequel ledit système de séchage (10) comprend en outre un condenseur (4) adapté pour recevoir un écoulement d'air humide provenant de ladite cuve (3) et l'amener à se condenser et obtenir de l'air séché, dans lequel ladite unité de soufflage (5) est intercalée entre ledit condenseur (4) et ledit conduit de raccordement (6).
  5. Appareil électroménager selon l'une quelconque des revendications précédentes, dans lequel ladite unité de soufflage (5) comprend :
    a. un carter (51) réalisé en un matériau métallique ;
    b. une turbine (59) montée en rotation dans ledit carter (51) ;
    c. un moteur électrique (52') monté sur ledit carter et adapté pour entraîner ladite turbine (59) en rotation.
  6. Appareil électroménager selon la revendication 5, dans lequel ledit carter (51) comprend une première demi-coque (52) et une seconde demi-coque (53) qui sont assemblées mutuellement pour former ledit carter (51).
  7. Appareil électroménager selon la revendication 5 ou 6, dans lequel ledit matériau métallique est une tôle en métal.
  8. Appareil électroménager selon l'une quelconque des revendications 5 à 7, comprenant en outre un élément chauffant (58) monté à l'intérieur dudit carter (51).
  9. Appareil électroménager selon l'une quelconque des revendications 5 à 8, dans lequel ledit carter (51) comprend une volute (511) entourant ladite turbine (59) et un conduit de carter (512) s'étendant radialement depuis ladite turbine (511).
  10. Appareil électroménager selon les revendications 8 et 9, dans lequel ledit élément chauffant (58) est monté dans ledit conduit de carter (512).
EP15192295.2A 2015-10-30 2015-10-30 Appareil électroménager adapté à effectuer au moins un cycle de séchage, telle qu'une machine à laver/à sécher ou machine à sécher Active EP3162948B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15192295.2A EP3162948B1 (fr) 2015-10-30 2015-10-30 Appareil électroménager adapté à effectuer au moins un cycle de séchage, telle qu'une machine à laver/à sécher ou machine à sécher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15192295.2A EP3162948B1 (fr) 2015-10-30 2015-10-30 Appareil électroménager adapté à effectuer au moins un cycle de séchage, telle qu'une machine à laver/à sécher ou machine à sécher

Publications (2)

Publication Number Publication Date
EP3162948A1 EP3162948A1 (fr) 2017-05-03
EP3162948B1 true EP3162948B1 (fr) 2018-04-18

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Application Number Title Priority Date Filing Date
EP15192295.2A Active EP3162948B1 (fr) 2015-10-30 2015-10-30 Appareil électroménager adapté à effectuer au moins un cycle de séchage, telle qu'une machine à laver/à sécher ou machine à sécher

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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181222B (en) * 1985-10-02 1988-10-05 Philips Electronic Associated Machine for washing and drying domestic laundry
JP3544876B2 (ja) * 1998-12-25 2004-07-21 株式会社東芝 ドラム式洗濯機
EP1353004A1 (fr) * 2002-04-09 2003-10-15 Bonferraro S.p.A. Machine à laver avec circuit de séchage auto-nettoyant
US20100257902A1 (en) * 2007-06-07 2010-10-14 Aktiebolaget Electrolux Washing machine and dryer
EP2039819B1 (fr) * 2007-09-21 2016-05-04 Candy S.p.A. Machine à laver séchante
WO2009083396A1 (fr) * 2007-12-31 2009-07-09 Arcelik Anonim Sirketi Machine à laver
ITPR20120071A1 (it) 2012-10-23 2014-04-24 Indesit Co Spa Dispositivo di asciugatura con soffiante
KR101706663B1 (ko) * 2013-02-20 2017-02-27 삼성전자주식회사 드럼 세탁기
EP2843099B1 (fr) * 2013-08-30 2017-10-11 Electrolux Appliances Aktiebolag Machine à laver et à sécher le linge et soufflet destiné à une machine à laver et à sécher le linge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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