EP2719818B1 - Sèche-linge domestique - Google Patents

Sèche-linge domestique Download PDF

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Publication number
EP2719818B1
EP2719818B1 EP13187844.9A EP13187844A EP2719818B1 EP 2719818 B1 EP2719818 B1 EP 2719818B1 EP 13187844 A EP13187844 A EP 13187844A EP 2719818 B1 EP2719818 B1 EP 2719818B1
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EP
European Patent Office
Prior art keywords
drum
laundry dryer
wall
peripheral wall
laundry
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.)
Not-in-force
Application number
EP13187844.9A
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German (de)
English (en)
Other versions
EP2719818A1 (fr
Inventor
Giovanni Bombardieri
Gianbattista Pirola
Mario Biancospino
Luca Bossi
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
Original Assignee
Indesit Co SpA
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Publication date
Application filed by Indesit Co SpA filed Critical Indesit Co SpA
Publication of EP2719818A1 publication Critical patent/EP2719818A1/fr
Application granted granted Critical
Publication of EP2719818B1 publication Critical patent/EP2719818B1/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
    • 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 present invention relates to a household laundry dryer of the type indicated in the preamble of Claim 1.
  • Laundry dryers typically have a load-bearing structure or cabinet, mounted within which is a laundry drum, rotatable about a substantially horizontal axis.
  • the drum is driven by means of an electric motor, usually via a transmission belt, and is rotatably supported in its front and rear areas via pairs of rollers or runners.
  • the drum is supported in its front part by means of an aforesaid pair of wheels and in the rear part by a shaft, coaxial to the axis of rotation of the drum and associated to its rear wall.
  • the laundry dryer has a circuit for conveying a flow of drying air, which includes a channel along which a fan operates and means for heating the air.
  • the fan forces the air into the drum, via a delivery branch of the system, after the air itself has been heated by the resistance.
  • the hot air traverses the inside of the drum and is saturated with the humidity yielded by the laundry contained therein, the laundry thus progressively drying.
  • the heating means comprise at least one electrical resistance, but in recent times the use of heat pumps has spread, mainly for reasons of energy efficiency.
  • the hot air is generally introduced into the drum through a central region of its rear wall, which is provided with a plurality of holes.
  • This region of the drum faces a region of a rear wall of the cabinet, which is also provided with one or more holes.
  • the channel that conveys the heated air downstream of the fan usually includes a terminal component, which, together with the aforesaid region of the rear wall of the cabinet, forms a chamber, having in general an approximately circular profile so as to circumscribe a region of diffusion of the air.
  • the drying air spreads within the aforesaid chamber and then penetrates into the drum, through the holes of the corresponding rear wall.
  • sealing means usually constituted by a low-friction annular gasket in order to prevent any dispersion of the flow of hot air into the cabinet.
  • a central opening used - in the case of a front-loading machine - also for the purposes loading and unloading the laundry, associated to which are corresponding sealing means and means for conveying the air.
  • a duct for intake of the drying air (the so-called "air duct”), which typically girds the central opening and is set between the front wall of the drum and the hatch.
  • the front opening of the drum is in fluid communication with the aforesaid air duct, and hence with the intake branch of the circuit of the drying air, upstream of the fan, along which there is a heat exchanger, such as a condenser, designed to subtract humidity from the air taken in from the drum, the dehumidified air being then again heated and re-introduced into the drum via the delivery branch of the circuit.
  • a heat exchanger such as a condenser
  • the drum In laundry dryers, the drum has a structure traditionally made of sheet metal, usually stainless steel, and comprising a peripheral wall, which is substantially cylindrical, as well as a front wall and a rear wall that are flange-shaped.
  • the front and rear walls of the drum are configured as distinct pieces with respect to the peripheral wall, and are rigidly fixed thereto via welding or clinching.
  • the front and rear walls are, instead, formed integrally with the peripheral wall.
  • the front and rear walls are obtained via shearing and deformation of a respective sheet of metal.
  • obtaining the front and rear walls of the drum integrally with the peripheral wall involves operations of deformation and stretch-forming of a single starting sheet of metal.
  • the rear wall of the drum inevitably has a relatively wide central opening, which must be closed to prevent linen garments from penetrating therein during rotation of the drum.
  • an additional closing component usually fixed to the rear wall of the drum is an additional closing component, provided with an array of holes for passage of the air.
  • an additional component fixed to the rear wall of the cabinet is an additional component, having a cylindrical shape, projecting towards the inside of the cabinet and coupled, with interposition of sealing means, to the opening of the rear wall of the drum.
  • this additional component is provided with one or more openings.
  • Document US 3,321,846 discloses a clothes dryer, including a stationary drum forming a treatment zone for receiving fabrics to be dried, separate tumbling means mounted on the drum for movement circumferentially continuous relative thereto and having a portion thereof extending into the drum to engage and to tumble fabrics therein upon movement of said tumblingmeans and means for driving the tumbling means circumferentially relative to the drum.
  • the object of the present invention is basically to provide a laundry dryer having a structure that is improved, simpler, and more economically advantageous to produce as compared to the known art, and such as to guarantee efficient operation.
  • the above object is achieved, according to the present invention, by a laundry dryer presenting the characteristics indicated in Claim 1.
  • Preferred characteristics of the invention are indicated in the independent claims. The claims form an integral part of the technical teaching provided herein in relation to the invention.
  • references to "an embodiment” or “one embodiment” within the framework of the present description is meant to indicate that a particular configuration, structure, or characteristic described in relation to the embodiment is comprised in at least one embodiment.
  • phrases such as “in an embodiment”, “in one embodiment”, and the like, that may be present in different points in the framework of the present description do not necessarily all refer to one and the same embodiment.
  • the particular configurations, structures, or characteristics may be combined in any adequate way in one or more embodiments.
  • the references used herein are only provided for convenience and do not define the sphere of protection or the scope of the embodiments.
  • plastic material and the like is meant to indicate any plastic or synthetic material, or material with a plastic or synthetic base, possibly with the addition of fillers designed to improve the functional characteristics and characteristics of strength thereof, such as mineral fillers, textile fillers, synthetic fillers, and so on.
  • the laundry dryer forming the subject of the invention comprises all the other elements in themselves known for normal operation of a laundry dryer, such as, for example, a control system, a motor for driving the drum in rotation via a belt, a condenser for the drying air (in the case where the invention is applied to a condensation dryer), or a heat pump, and so forth.
  • Figures 1 and 2 designated as a whole by 1 is a household laundry dryer according to a possible embodiment of the present invention.
  • the laundry dryer 1 has a load-bearing structure, referred to hereinafter for simplicity as "cabinet”, comprising a base 2, a front wall 3, a rear wall 4, an upper surface or top 5, and side walls, not represented.
  • the laundry dryer 1 is of a front-loading type so that the wall 3 is provided with a through opening (not visible), mounted in front of which is a hatch 6.
  • the drum 7 is mounted within the cabinet.
  • the drum 7 has two lifters 8a and 8b in substantially opposite diametral positions, but not ruled out from the scope of the invention are solutions that envisage a single lifter, or again more than two lifters variously positioned, for example three paddle lifters set at approximately 120° from one another.
  • the drum 7 has a structure that comprises a front wall 7a, a rear wall 7b, and a peripheral wall 7c, which extends between the front wall 7a and the rear wall 7b, for defining a volume for containing the laundry to be dried.
  • the laundry dryer 1 includes a drying circuit of any conception known in the sector.
  • the laundry dryer 1 is of the condensation type, and the aforesaid circuit includes some components housed in the base 2 of the laundry dryer, amongst which an air-air heat exchanger 9, or condenser, a fan 10 for forcing a flow of cooling air to a first section of the heat exchanger 9 (in order to favour condensation of the humidity present in the air leaving the drum 7, which is made to pass in a second section of the heat exchanger), a first duct 11 that connects an outlet of the heat exchanger 9 (for the dehumidified air) to a second duct 12, possibly partially defined by the rear wall 4, which rises along the back of the cabinet, for conveying the drying air towards the inside of the drum 7.
  • a fan 13 operative within the duct 12 is a fan 13, for taking in the air leaving the heat exchanger 9 and forcing it along the circuit.
  • means for heating the drying air (not represented), which may, for example, include one or more electric resistances housed within the duct 11 or the duct 12.
  • motor means comprising, for example, an electric motor 14.
  • the motor 14 is exploited, via one and the same shaft 14a, for driving both the fan 10 and the fan 13: there is nothing to rule out in principle providing distinct motors for the two fans in question.
  • a first part of the structure of the drum is mounted in a stationary position within the cabinet of the laundry dryer 1 and includes at least one of the front wall 7a and the rear wall 7b, as well as at least one respective portion 7c 1 , 7c 2 of the peripheral wall 7c.
  • a second part of the structure of the drum 7, designated as a whole by 30, is instead rotatably mounted within the cabinet of the laundry dryer 1 so as to turn about a substantially horizontal axis of rotation - designated by X in Figure 3 -, and said second part of structure 30 includes at least one respective portion 7c 3 of the peripheral wall 7c.
  • the aforesaid portions 7c 1 , 7c 2 , 7c 3 of the peripheral wall 7c that belong to the first part 20 and to the second part 30 of the structure of the drum 7 are substantially cylindrical at least in a coupling region thereof.
  • the first part 20 and the second part 30 of the structure of the drum 7 are substantially coaxial, and fixed with respect to the second part 30 are the means for agitating the laundry, here represented by the two lifters 8a and 8b.
  • motor means Operatively coupled to the second part 30 of the structure of the drum 7 are motor means, for causing rotation thereof about the axis X.
  • the aforesaid motor means used for causing rotation of the part 30 of the structure of the drum 7 are represented by the electric motor 14, associated to the shaft 14a of which is a pulley 15 that, together with a belt 16, transmits the movement to the part of structure 30.
  • the motor 14 actuates both the two fans 10, 13 and the part of structure 30: this measure must not, however, be considered as essential, it being possible for the motor means that drive the part of structure 30 even to be independent of the ones used for driving one or both of the aforesaid fans.
  • the presence of the fan 10 is dictated by the type of heat exchanger 9: in the case of use of other types of heat exchanger (for example air-water heat exchanger) or of a heat pump, the presence of the fan 10 is not necessary.
  • the first part 20 of the structure of the drum 7 includes the front wall 7a, the rear wall 7b, as well as a first portion and a second portion of the peripheral wall 7c, which are substantially cylindrical and are designated by 7c 1 and 7c 2 .
  • the second part 30 of the structure of the drum 7 includes a third substantially cylindrical portion 7c 3 of the peripheral wall 7c, which is rotatably mounted between the aforesaid first and second portions 7c 1 and 7c 2 .
  • the rotatable part of the structure of the drum 7 is basically constituted by a cylindrical intermediate strip of the peripheral wall 7c, which is set between two stationary half-shells 20 and associated to which are the means for agitating the laundry, operative within the drum itself
  • the portion 7c 3 has a diameter slightly greater than that of the portions 7c 1 and 7c 2 , but not ruled out from the scope of the invention is the case where the part 30 has a diameter smaller than the part 20, at least in the respective connection areas, or substantially the same diameter.
  • the portion 7c 3 may be rotatably constrained between the portions 7c 1 and 7c 2 with profiles substantially of the shape-fit type, such as channel-section slide guides, and/or with possible interposition of sealing means, for example low-friction gaskets of the type normally used in laundry dryers.
  • the couplings of the portion 7c 3 with the portions 7c 1 and 7c 2 are shaped to prevent any risk of pinching of the garments between the rotatable portion and the stationary one.
  • the at least one member for agitating the laundry or lifter 8a, 8b extends longitudinally from the rotatable part of structure 30 as far as inside the stationary part of structure 20, as is clearly visible, for example, in Figures 2 and 3 .
  • This is advantageous in so far as it enables movement of laundry that occupies temporarily a portion of the volume for containing the laundry defined by the stationary part of structure 20.
  • the shape of the lifter or lifters provided may be various, according to the need.
  • the lifters are mounted at a distance from the portions of wall 7c 1 and 7c 2 such as to reduce the risk of pinching of the laundry during their rotation, and are purposely shaped.
  • the lifter or lifters may be applied to the corresponding part of structure 30 or else be obtained integrally therewith, for example when the part 30, or at least its portion 7c 3 , is made at least in part of plastic material.
  • At least two lifters 8a, 8b fixed with respect to the second part 30 of the structure of the drum 7 are at least two lifters 8a, 8b, which extend substantially in opposite directions starting from the rotatable intermediate portion 7c 3 of the peripheral wall 7c, i.e., with the lifter 8a that extends longitudinally as far as inside the portion of the containment volume defined by the front wall 7a and by the portion 7c 1 of the peripheral wall 7c, and with the lifter 8b that extends longitudinally as far as inside the portion of the containment volume defined by the rear wall 7b and by the portion 7c 2 of the peripheral wall 7c.
  • one and the same lifter extends longitudinally from opposite sides of the portion 7c 3 , i.e., within each of the aforesaid portions of the volume for containing the laundry.
  • this part 20 includes a front wall 7a provided with a single opening - designated by 7d in Figure 3 - for loading and unloading the laundry, which in use is closed by a corresponding rear portion of the hatch 6.
  • the front wall 7a may be variously configured and does not necessarily have to be formed integrally with the respective portion 7c 1 of the peripheral wall 7c, or constituted by a circular flange body associated to the aforesaid portion 7c 1 : for example, the wall 7a of the drum 7 may be defined by a portion of a stationary front partition with polygonal profile (obviously having dimensions of height and width greater than the diameter of the portion 7c 1 ), or again be obtained from a portion of the front wall 3 itself of the cabinet of the laundry dryer 1.
  • the rear wall 7b of the drum belongs to the stationary part 20 and has an array of holes 7e for inlet of the drying air.
  • the part 20 is stationary, coupling between the rear wall 7b and the duct 12 ( Figure 2 ) is extremely simplified, not requiring, for example, low-friction seal gaskets typical of the known art.
  • the wall 7b of the drum 7 may also be defined by a component of the duct 12 or of the rear wall 4 itself of the cabinet of the laundry dryer.
  • the rear wall substantially in the form of a flange, for example in a way similar to what has been illustrated for the front wall 7a of Figure 3 or for the rear wall 7b visible in Figure 5 .
  • each of the portions 7c 1 and/or 7c 2 of the peripheral wall 7c of the drum does not necessarily have to be completely cylindrical, the cylindrical shape being limited to the regions of connection with the rotatable portion 7c 3 in order to enable rotation of the latter.
  • the inlet and/or outlet for the air of the drum 7 are not necessarily defined in the front wall 7a or rear wall 7b, it being possible for the inlet and/or the outlet to be defined totally or in part also in a portion of the peripheral wall 7c that belongs to the stationary part of structure 20.
  • the stationary part of structure 20 there may be defined channels, such as ducts for conveying the hot drying air according to preferential paths within the drum, and/or functional components of the laundry dryer 1, such as a seat for a filter or sensor means.
  • the solution according to the invention enables, for example, provision, in a very easy way, of temperature-sensor means and/or humidity-sensor means directly inside the drum and in the proximity of the laundry, in particular inside the stationary part of structure, to which said sensor means can be constrained.
  • the shape and dimensions of the lifters, as well as the position and dimensions of the above channels and/or functional components will be provided so as to prevent any interference of the former with the latter.
  • a channel 17 which provides outlet for the air from the drum 7 and defines at the same time the seat for a removable filter 18 for the fluff set in circulation by the air (such a filter may be rendered accessible following upon opening of the hatch 6 or via a purposely provided access hatch present on the wall 3 of the cabinet or on the front of the base 2).
  • FIGS 4 and 5 are schematic illustrations of a second possible embodiment of the invention.
  • the stationary part 20 of the structure of the drum includes the front wall 7a and a respective substantially cylindrical portion 7c 1 of the peripheral wall 7, whilst the rotatable part 30 of the structure of the drum includes the rear wall 7b, as well as a respective substantially cylindrical portion 7c 3 of the peripheral wall 7c.
  • the lifter 8b extends only within the portion of the volume for containing the laundry defined by the part of structure 30. Consequently, in a way similar to what has been already mentioned, such a lifter could be configured so as to extend also into the portion of the containment volume defined by the part of structure 20.
  • the rear wall 7b is shaped substantially like a circular flange, with a projecting cylindrical lip 7f, designed for rotatable coupling with a cylindrical outlet portion (not visible) of the duct 12, with interposition of low-friction sealing means.
  • the aforesaid cylindrical outlet portion of the duct 12 preferably has a terminal wall provided with one or more openings, and/or a closing component, provided with an array of holes for passage of the air, may be mounted on the rear wall 7b of the drum, at the opening delimited by the cylindrical lip 7f.
  • the above embodiment is to be understood merely as example, in so far as the shape of the wall 7b, when belonging to the rotatable part of structure, and its modalities of mechanical and fluidic coupling and coupling to the outlet section of the duct 12 may be various, according to the known technique currently used in the sector. It will be appreciated, for example, that the rear wall 7b of the drum of Figure 5 could present an array of holes 7e as illustrated in Figure 3 , with the outlet of the duct 12 and the corresponding sealing means shaped accordingly.
  • the rotatable part 30 of the structure of the drum 7 may be rotatably supported at least partially by the stationary part 20.
  • the part 30 may possibly be completely supported by the part 20, without any need for further rolling or sliding supporting means.
  • additional supporting means associated to the load-bearing structure of the laundry dryer, for example to its base 2.
  • These means may be, for example, of the rolling type, such as wheels, or sliding type, such as runners.
  • the additional supporting means comprise two pairs of wheels 31a and 31b, the wheels of each pair being rotatable according to a respective axis substantially parallel to the axis X (the figure shows just one wheel of each pair).
  • the pairs of wheels 31a, 31b are here mounted in a front area and rear area, respectively, of the portion 7c 3 of the peripheral wall 7c.
  • the part of structure 20 is supported by the stationary structure of the laundry dryer, for example via corresponding rests or supports, designated by way of example by 21 in Figures 2 and 4 .
  • the invention may be applied also to the case of a top-loading laundry dryer.
  • a top-loading laundry dryer Such an embodiment is exemplified in Figure 6 , where the same reference numbers as those of the previous figures are used to designate elements that are technically equivalent to the ones already described above.
  • the structure of the drum 7 is to a large extent similar to that of Figures 4 and 5 .
  • defined in the portion 7c 1 of the peripheral wall 7c of the drum is, in a upper area thereof, an opening provided with a hatch 6' having sealing means, suitable to prevent any dispersion of the drying air, and associated to the upper wall 5 of the cabinet is a respective hatch 6" to enable access to the hatch 6' and hence to the inside of the drum 7.
  • the stationary part 20 of the structure of the drum may be configured in a way similar to what has been illustrated in Figure 4 , it being understood that, in this case, the front wall 7a of the drum does not require an opening of a large diameter for loading and unloading the laundry.
  • the part 20 may be of the type illustrated in Figure 6 , where the front wall 7a may present a single central opening, or an array of holes (in a way similar to the wall 7b of Figure 3 ), or again a flange (in a way similar to the wall 7b of Figure 4 ).
  • a duct 21 which may be of a general conception similar to the duct 12, for conveying the moist air leaving the drum 7 towards the condenser 9.
  • the seat for the filter 18 may in this case be defined within the duct 21 in order to be accessible from the front of the laundry dryer 1, via a suitable access (not represented).
  • the structure of the drum 7 of the laundry dryer according to the invention may be entirely made of metal material, for example stainless steel, but major advantages in terms of simplification and reduction of the costs may be achieved using at least in part plastic materials.
  • the structure of the drum 7 may be of a hybrid type, i.e., made in part of metal material and in part of one or more plastic materials.
  • the front wall 7a and/or rear wall 7b of the drum may be defined by stationary components of the laundry dryer 1, such as parts of the walls 3 or 4 of the cabinet or parts of the ducts 12 or 21, that may be conveniently made of plastic materials.
  • Each of the portions 7c 1 and 7c 2 may be made of plastic material, and a plastic material or combination of plastic materials may possibly be used to obtain the entire stationary part of structure 20.
  • plastic materials is particularly advantageous when integrated in the stationary part of structure are ducts for the air or housings for functional components of the laundry dryer 1.
  • considerations similar to those set forth above apply also to the case of the rotatable part of structure 30, which may thus be entirely or partially made of metal material, or plastic material, or again a combination of metal material and plastic material.
  • the stationary part 20 of the structure of the drum 7 may be shaped so as to enable housing or positioning on the outside of the drum itself of one or more functional components of the laundry dryer 1.
  • the portion 7c 1 or portions 7c 1 and 7c 2 of the peripheral wall 7c of the drum 7 do not necessarily have to be perfectly cylindrical or completely cylindrical, by virtue of the fact that these portions are stationary.
  • these portions 7c 1 or 7c 1 and 7c 2 will be substantially cylindrical at least at their region of coupling to the rotatable part 30.
  • a stationary portion of the peripheral wall 7 may be shaped so as to present recesses aimed at facilitating positioning of components of the laundry dryer external to the drum.
  • the shape and dimensions of the lifters, as well as the dimensions and position of the aforesaid recesses will be provided so as to prevent any interference of the former with the latter.
  • the compressor of a heat pump may be mounted in a region corresponding to the stationary part of structure 20, for example by defining a recess in the portion of wall 7c 1 or 7c 2 in a position corresponding to that where the compressor (but it could be any other component, for example, a motor or a condenser) will be installed, thus enabling an easier installation of the component in question but without reducing appreciably the laundry-containment capacity of the drum 7.
  • a stationary portion of the peripheral wall 7c may also be shaped so as to present one or more projections outwards in order to increase the internal volume of the drum 7, for example in order to provide therein or house therein functional elements of the laundry dryer 1.
  • a lower part or a half part of the stationary portion 7c 1 and/or 7c 2 of the peripheral wall 7 has a shape that can be substantially superimposed on an imaginary cylindrical surface, whilst an upper part or an upper half of the stationary portion 7c 1 and/or 7c 2 itself is shaped so as to expand outwards more than the aforesaid imaginary cylindrical surface.
  • a similar expanded shaping is not provided in the lower part of the stationary portion of interest of the peripheral wall 7c, since there could be created areas of accumulation of laundry that cannot be reached by the lifters: instead, in the upper part of the drum mixing of the laundry is always guaranteed by gravity.
  • the laundry dryer 1 has a structure generally similar to that of Figures 1-3 , but in this case the rear portion of the stationary part of the drum, here designated by 20', includes at least one upper extension, which in the example projects from the corresponding portion of wall 7c 2 . More precisely, in the example, two upper and lateral extensions, designated by 40, are provided, which here involve also the rear wall 7b of the drum, as may be appreciated in particular from Figures 9 and 10 .
  • the portion of wall 7c 2 has in any case a substantially cylindrical front part, here designated by 41, for coupling with the rotatable part 30 of the structure of the drum 7.
  • the part 41 or more in general, the cylindrical part of the portion or portions 20, 20' (or 30) that is provided for coupling with the rotatable part 30 (or with a respective stationary part 20, 20', respectively), according to the various embodiments of the invention, does not necessarily have to consist of a continuous cylindrical wall: this coupling part could also present one or more interruptions (consider, for example, a series of teeth projecting at the front and set according to a circumference, for engagement to the part 30 or 20 or 20', respectively), it remaining understood that the coupling between a stationary part and the rotatable part of the structure of the drum will be preferably provided with sealing means to prevent any dispersion of the flow of drying air.
  • the at least one upper extension 40 there may be integrated or mounted functional elements of the laundry dryer, such as for example ducts for conveying the flow of forced air in preferential directions.
  • functional elements of the laundry dryer such as for example ducts for conveying the flow of forced air in preferential directions.
  • the extensions 40 are provided with channels 42 with outlet openings designed to direct the flow of the drying air at inlet-represented schematically by the black arrows - in radial directions towards the axis of rotation of the rotatable part of structure 30.
  • the rear duct 12 extends further upwards with respect to the case of Figures 1-2 , and may comprise two branches that terminate at the extensions 40, i.e., at the inlets of the ducts 42 provided in these extensions (these inlets are represented schematically in Figure 9 ). It is of course also possible to provide in addition an axial inlet, for example including a single hole or a plurality of holes in the rear wall 7b.
  • the part 20' may include a single extension 40, that may also be shaped differently from the example illustrated, and it is likewise clear that also the front part 20 of the stationary structure of the drum 7 may include one or more upper extensions, not necessarily of a shape similar to those of the extensions 40, according to the need.
  • the front part 20 of the stationary structure of the drum 7 may include one or more upper extensions, not necessarily of a shape similar to those of the extensions 40, according to the need.
  • FIGs 11-13 illustrate another example of laundry dryer 1 having a drum 7 with a stationary front part, here designated by 20", the portion of peripheral wall 7c 1 of which is provided with an upper extension.
  • the laundry dryer 1 of Figures 11-12 is of the top-loading type, having a general structure similar to that of the embodiment of Figure 6 .
  • the stationary front part 20" includes an upper extension 43 of the portion of wall 7c 1 , substantially central and open at the top, which replaces the hatch 6' of Figure 6 and extends substantially as far as the hatch 6" provided in the upper wall 5 of the cabinet of the laundry dryer 1.
  • suitable sealing means will be operative between the upper edge of the extension 43 and the aforesaid hatch 6".
  • the drying circuit may be provided in such a way that the direction of the flow of forced air is opposite to the one indicated in the attached figures.
  • the positions of the stationary part 20 and of the rotatable part 30 could be reversed (i.e., with the stationary part 20 closer to the rear wall 4 of the cabinet and the rotatable part 30 closer to the front wall 3 of the cabinet).
  • the rotatable part of structure of the drum 7 may comprise only a respective portion of the peripheral wall 7c, with the stationary part of structure that hence includes the front wall 7a, the rear wall 7b, and a remaining portion of peripheral wall 7c.
  • the means used for causing rotation of the part of structure 30 must not necessarily be of the pulley-belt type, it being possible to include, for example, a gear arrangement between a motor and the part 30 or again, for example in embodiments of the type of Figures 4 , 6 and 11-12 , the driving arrangement could include a rear motor, rotor of which is fixed with respect to the rotatable part of structure 30.

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

Claims (14)

  1. Sèche-linge domestique comprenant une carrosserie (2-5), un circuit de séchage (9-13, 17, 18 ; 9-13, 17, 18, 21), un moyen moteur (14) et un tambour pour le linge (7) ayant au moins une entrée (7e ; 7f) et une sortie (17 ; 7d) pour le passage de l'air de séchage, le tambour (7) étant monté à l'intérieur de la carrosserie (2-5) et ayant au moins un élément pour agiter le linge (8a, 8b), dans lequel le tambour (7) a une structure comprenant une paroi avant (7a), une paroi arrière (7b) et une paroi périphérique (7c) qui s'étend entre la paroi avant (7a) et la paroi arrière (7b) pour définir un volume pour contenir le linge, dans lequel :
    - une première partie (20 ; 20, 20' ; 20") de la structure du tambour, incluant au moins une de la paroi avant (7a) et de la paroi arrière (7b), aussi bien qu'au moins une portion respective (7c1, 7c2) de la paroi périphérique (7c), est montée dans une position immobile à l'intérieur de la carrosserie (2-5) ;
    - une seconde partie (30) de la structure du tambour, incluant au moins une portion respective (7c3) de la paroi périphérique (7c) est montée en rotation à l'intérieur de la carrosserie (2-5), pour tourner autour d'un axe de rotation (X) sensiblement horizontal, la première partie (20 ; 20, 20' ; 20") et la seconde partie (30) de la structure du tambour étant sensiblement coaxiales, et l'au moins un élément (8a, 8b) pour agiter le linge étant associé à la seconde partie (30) de la structure du tambour ;
    - lesdites portions (7c1, 7c2, 7c3) de la paroi périphérique (7c) appartenant à la première partie (20 ; 20, 20' ; 20") et à la seconde partie (30) de la structure du tambour sont sensiblement cylindriques au moins dans une région d'accouplement de celles-ci ; et
    - le moyen moteur (14) est accouplé de manière opérationnelle à la seconde partie (30) de la structure du tambour pour provoquer sa rotation ;
    caractérisé en ce que l'au moins une portion de la première partie (20 ; 20, 20' ; 20") de la structure du tambour est mise en forme afin de présenter des parties en retrait ou des parties en saillie vers l'extérieur dans le but de loger ou de positionner un ou plusieurs éléments fonctionnels du sèche-linge (1) à l'extérieur du tambour (7).
  2. Sèche-linge selon la revendication 1, dans lequel l'au moins un élément d'agitation (8a, 8b) s'étend longitudinalement à partir de la seconde partie (30) de la structure du tambour dans la première partie (20 ; 20, 20' ; 20") de la structure du tambour.
  3. Sèche-linge selon la revendication 1 ou la revendication 2, dans lequel :
    - la première partie (20 ; 20, 20') de la structure du tambour inclut la paroi avant (7a), la paroi arrière (7b), une première portion (7c1) de la paroi périphérique (7c) et une seconde portion (7c2) de la paroi périphérique (7c) ; et
    - la seconde partie (30) de la structure du tambour inclut une troisième portion (7c3) de la paroi périphérique (7c) qui est montée en rotation entre les première et seconde portions susmentionnées (7c1, 7c2) de la paroi périphérique (7c).
  4. Sèche-linge selon les revendications 2 et 3, dans lequel associés à la seconde partie (30) de la structure du tambour il y a au moins un premier élément d'agitation (8a) et un second élément d'agitation (8b), le premier élément d'agitation (8a) s'étendant longitudinalement depuis la seconde partie (30) de la structure du tambour dans une partie dudit volume de contention défini par la paroi avant (7a) et par la première portion (7c1) de la paroi périphérique (7c), et le seconde élément d'agitation (8b) s'étendant longitudinalement depuis la seconde partie (30) de la structure du tambour dans une partie dudit volume de contention défini par la paroi arrière (7b) et par la seconde portion (7c2) de la paroi périphérique (7c).
  5. Sèche-linge selon la revendication 1 ou la revendication 2, dans lequel :
    - la première partie (20 ; 20") de la structure du tambour inclut une de la paroi avant (7a) et de la paroi arrière (7b), aussi bien qu'une portion respective (7c1) de la paroi périphérique (7c) ; et
    - la seconde partie (30) de la structure du tambour inclut l'autre de la paroi avant (7a) et de la paroi arrière (7b), aussi bien qu'une portion respective (7c3) de la paroi périphérique (7).
  6. Sèche-linge selon l'une quelconque des revendications précédentes, dans lequel la seconde partie (30) de la structure du tambour est supportée en rotation au moins en partie par la première partie (20 ; 20, 20' ; 20") de la structure du tambour.
  7. Sèche-linge selon l'une quelconque des revendications précédentes, comprenant un moyen (31a, 31b) pour supporter en rotation la seconde partie (30) de la structure du tambour.
  8. Sèche-linge selon l'une quelconque des revendications précédentes, dans lequel une de l'entrée (7e ; 7f) et de la sortie (17 ; 7d) pour l'air de séchage est définie au moins en partie dans une parmi la paroi avant (7a), la paroi arrière (7b) et une portion (7c1) de la paroi périphérique (7c) qui appartient à la première partie (20 ; 20, 20' ; 20") de la structure du tambour.
  9. Sèche-linge selon la revendication 6, dans lequel au moins une de l'entrée (7e; 7f) et de la sortie (17 ; 7d) pour l'air de séchage comprend l'une d'une ouverture simple (7d ; 7f) et d'une pluralité de trous (7e) de la paroi avant (7a) ou de la paroi arrière (7b).
  10. Sèche-linge selon l'une quelconque des revendications précédentes, dans lequel au moins une de la paroi avant (7a) et de la paroi arrière (7b) est sensiblement en forme de bride.
  11. Sèche-linge selon la revendication 1, dans lequel au moins une portion (40 ; 43) de la première partie (20' ; 20") de la structure du tambour est mise en forme dans le but de loger ou de positionner un ou plusieurs éléments fonctionnels (17, 18 ; 42) du sèche-linge (1) à l'intérieur du tambour (7).
  12. Sèche-linge selon la revendication 10 ou la revendication 11, dans lequel ladite au moins une portion mise en forme de la première partie (20) de la structure du tambour appartient à une dite portion (7c1, 7c2) de la paroi périphérique (7c).
  13. Sèche-linge selon l'une quelconque des revendications précédentes, dans lequel dans la première partie (20) de la structure du tambour il y a au moins en partie un ou plusieurs conduits définis pour le passage de l'air et/ou il y a des moyens formant capteurs qui sont montés.
  14. Sèche-linge selon l'une quelconque des revendications précédentes, dans lequel entre la première partie (20) et la seconde partie (30) de la structure du tambour il y a des moyens d'étanchéité opérationnels.
EP13187844.9A 2012-10-09 2013-10-09 Sèche-linge domestique Not-in-force EP2719818B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000880A ITTO20120880A1 (it) 2012-10-09 2012-10-09 Macchina asciugatrice di biancheria ad uso domestico

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EP2719818A1 EP2719818A1 (fr) 2014-04-16
EP2719818B1 true EP2719818B1 (fr) 2016-11-23

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Publication number Priority date Publication date Assignee Title
CN107904863B (zh) * 2017-10-20 2019-05-07 珠海格力电器股份有限公司 洗衣机内筒容积设置方法、装置、存储介质及洗衣机
WO2019223850A1 (fr) * 2018-05-21 2019-11-28 Electrolux Appliances Aktiebolag Appareil de traitement de linge
BR112021025815A2 (pt) 2019-06-21 2022-02-08 Electrolux Appliances AB Aparelho para tratamento de roupas para lavar e métodos para controlar um aparelho para tratamento de roupas para lavar
KR20210133706A (ko) * 2020-04-29 2021-11-08 엘지전자 주식회사 의류처리장치

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Publication number Priority date Publication date Assignee Title
US3321846A (en) * 1965-01-04 1967-05-30 Whirlpool Co Stationary drum clothes dryer
AU8089887A (en) * 1986-11-28 1988-06-02 Jordan, C.W. Drying apparatus

Non-Patent Citations (1)

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Title
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EP2719818A1 (fr) 2014-04-16
PL2719818T3 (pl) 2017-09-29
ITTO20120880A1 (it) 2014-04-10

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