EP2412861B1 - Laundry washing and drying machine - Google Patents

Laundry washing and drying machine Download PDF

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Publication number
EP2412861B1
EP2412861B1 EP10171465A EP10171465A EP2412861B1 EP 2412861 B1 EP2412861 B1 EP 2412861B1 EP 10171465 A EP10171465 A EP 10171465A EP 10171465 A EP10171465 A EP 10171465A EP 2412861 B1 EP2412861 B1 EP 2412861B1
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EP
European Patent Office
Prior art keywords
washing tub
washing
laundry
rear wall
drying machine
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
EP10171465A
Other languages
German (de)
English (en)
French (fr)
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EP2412861A1 (en
Inventor
Giorgio Coletto
Roberto Mazzocco
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP10171465A priority Critical patent/EP2412861B1/en
Priority to RU2011132191/12A priority patent/RU2011132191A/ru
Priority to CN2011102147878A priority patent/CN102409507A/zh
Publication of EP2412861A1 publication Critical patent/EP2412861A1/en
Application granted granted Critical
Publication of EP2412861B1 publication Critical patent/EP2412861B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • 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
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
    • 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
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • 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 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a laundry washing and drying machine.
  • the present invention relates to a front-loading home laundry washing and drying machine, to which the following description refers purely by way of example without implying any loss of generality.
  • today's front-loading home laundry washing and drying machines generally comprise:
  • the washing tub is suspended substantially horizontally inside the casing with its mouth directly faced to the laundry loading/unloading opening realized on the front wall of the casing, and the laundry washing and drying machine is generally provided with a cylindrical elastically-deformable bellows which connects in watertight manner the mouth of the bell-shaped washing tub to the laundry loading/unloading opening on the front wall of the casing.
  • front-loading home laundry washing and drying machines also comprise, inside the boxlike casing:
  • the closed-circuit, hot-air generator is structured for gradually drawing air from the washing tub; cooling down the air arriving from the washing tub so to extract and retain the surplus moisture in the air; heating the dehumidified air to a predetermined temperature, normally higher than the temperature of the air arriving from the washing tub; and feeding the heated, dehumidified air back into the washing tub, where it flows over the laundry stored inside the revolving drum to rapidly dry said laundry.
  • the cold-water condenser is attached to the rear wall of the washing tub, so that the inlet of the condenser casing directly communicates with the inside of the washing tub, close to the bottom of the latter, and so that the outlet of the condenser casing directly communicates with an electric centrifugal fan which is rigidly fixed on the top of the washing tub.
  • the delivery of the centrifugal fan in turn, communicates with the mouth of the bell-shaped washing tub via a connecting manifold which houses a resistor dimensioned for rapidly heating up the air flowing therein towards the washing tub.
  • the appliance casing In this type of laundry washing and drying machine, in fact, the appliance casing must be resized in depth so as to house a deeper floatingly-suspended washing group, and therefore it has no more standard dimensions.
  • EP 1 094 141 discloses a drum type washing machine with a drying function includes an outer cabinet, a water tub mounted in the outer cabinet and having a wall, a generally drum-shaped rotating tub rotatably mounted in the water tub , and a drying unit for drying laundry accommodated in the rotating tub.
  • the drying unit includes a heat exchanger having a duct disposed in it so that air flows through the duct.
  • the duct includes a part comprising the wall of the water tub.
  • EP 1 584 728 discloses a heating apparatus of a washing machine and a washing method thereof.
  • the heating apparatus includes a circulation channel installed outside a tub for connecting one side of the tub to the other side of the tub, and an orifice, water drop supply device for supplying water, an air blower for circulating the water, and a heater, which are sequentially installed in the circulation channel.
  • EP 1 659 208 discloses a washing machine includes a drum and a condensing duct connected with the drum.
  • the condensing duct includes an air inlet, an air outlet and a condensing unit.
  • a condensation water spray member is disposed in the condensing duct and a condensation water dispersing plate is supported by a lower portion of an inside wall in the condensing unit has a hole therethrough to allow air from the air inlet to pass through the dispersing plate.
  • EP 1 752 575 discloses a washing-drying machine comprising a cabinet; a tub installed in the cabinet; a washing tub rotatably arranged in the tub; a water supplying pipe connected to the tub for supplying water in order that wet air can be condensed inside the tub; and a circulation duct arranged outside the tub and having both ends connected to the tub, for circulating air inside the tub therethrough.
  • US 2004/045327 discloses a drum-type washing machine is equipped with a drying device, which increases condensing efficiency by increasing the contact of air flowing along a condensing duct with cooling water, and prevents water formed in a condensing duct from flowing into a fixed drum.
  • the washing machine is equipped with a drying device, which includes a discharging duct to connect an outlet of a blowing fan with an air inlet of a fixed drum and provided with a heater therein, and a condensing duct to connect an air inlet of the fixed drum with an inlet of the blowing fan and provided with a condensing unit to remove moisture.
  • the condensing unit includes a cooling water dispersion member disposed in the lower portion of the inside of the condensing duct and a cooling water supply pipe configured to supply cooling water to the cooling water dispersion member.
  • Aim of the present invention is to reduce the overall depth of this particular type of washing group, so as to permit said washing group to be housed in a boxlike casing having standard dimensions, possibly also reducing the appliance overall production costs.
  • a laundry washing and drying machine comprising an outer casing structured for resting on the floor and, inside the casing:
  • the seat or recess on the outer face of the rear wall of the washing tub has its lower end in direct communication with the inside of the washing tub via a first through opening located close to the bottom of the washing tub, and its upper end in communication with the suction of the air circulating means via a second through opening.
  • the seat or recess on the outer face of the rear wall of the washing tub is a substantially C-shaped seat or recess which extends close to the periphery of said rear wall; and the lid or cover is a substantially flat, C-shaped lid or cover which is dimensioned so to cover said C-shaped seat or recess on the rear wall of the washing tub, and is welded to the rear wall of washing tub so to hermetically close said C-shaped seat or recess for forming, together with the C-shaped seat or recess, a substantially C-shaped, internal main conduit which, in turn, extends inside the rear wall of the washing tub close to the periphery of the latter.
  • the internal main conduit of the condenser is fluidly connected to a delivering pipe adapted to supply both the detergents and/or softeners and the freshwater to be used in the washing cycle and to be channeled into the washing tub through the condenser, the delivering pipe is adapted to supply the freshwater to be used in the drying cycle for cooling down and dehumidifying the air flowing through internal main conduit.
  • the condenser is also provided with an inwards-projecting water slide which protrudes from the inner surface of the internal main conduit immediately upstream of a section of the main conduit which fluidly communicates with a delivering pipe, and is shaped so as to oblige the water arriving from the delivering pipe to form a waterfall which is located approximately in the centerline of said main conduit in order to prevent the cooling water channeled into internal conduit from lapping/licking against the inner surface of conduit while the water flows through the condenser, thereby maximizing the heat exchange between the cooling water and the moisture laden hot air.
  • the lid or cover does not protrude above the crest lines of the reinforcing ribs on the rear wall of the washing tub.
  • the condenser is also provided with an inwards-projecting spoiler which protrudes from the inner surface of the internal main conduit immediately downstream of an inlet of the latter, and is shaped so as to generate strong turbulences in the air flowing between the inlet of the condenser and a section of the main conduit fluidly communicating with the delivering pipe.
  • the condenser is also provided with one or more low-profiled inwards-projecting transversal ribs which are located downstream of a section of the main conduit fluidly communicating with the delivering pipe and protrude from the inner surface of the internal main conduit so as to prevent the water droplets condensed on the inner surface of said main conduit from flowing upwards pushed by the airflow directed towards the suction of the air circulating means.
  • the outer face of the lid or cover is additionally provided with a plurality of reinforcing ribs which are arranged so as to cooperate with the reinforcing ribs on the rear wall of the washing tub to stiffen the rear portion of the washing tub.
  • the inwards-projecting water slide comprises two mutually faced and reciprocally inclined main winglets which protrude from, respectively, the bottom surface of the seat or recess in the rear wall of the washing tub and the inner face of the lid or cover, and which extend one towards the other so as to put the respective distal side edges in abutment one against the other for forming a substantially V-shaped channel which extends inside the internal main conduit approximately up to the center of the local section of the main conduit.
  • the distal side edges of the two main winglets are mutually welded during the welding process that fixes the lid or cover to the rear wall of the washing tub.
  • the inwards-projecting water slide additionally comprises an auxiliary transversal winglet which cantileverly protrudes from the surface of the seat or recess realized on the outer face of the rear wall of the washing tub, immediately above the two main winglets, so as to cover in penthouse-like manner a transversal slit formed between the lateral edge of one of the two main winglets and the surface of the seat or recess on the rear wall of the washing tub.
  • the inwards-projecting spoiler comprises at least a first winglet which protrudes from the bottom of the seat or recess realized in the rear wall of the washing tub, and extends towards the overhanging lid or cover so as to put its distal side edge in substantial abutment against the inner face of said lid or cover, or against the distal side edge of a substantially coplanar second winglet which protrudes from the inner face of said lid or cover.
  • the reinforcing ribs are arranged on the outer face of the rear wall of the washing tub according to a substantially radially-oriented layout roughly centered to the longitudinal axis of the washing tub.
  • the laundry washing and drying machine is provided with a detergent dispenser comprising a container or receptacle which is located inside the casing and is structured for housing an extractable drawer which, in turn, is provided with one or more compartments dimensioned for storing a given amount of detergent and/or softener to be used in the washing cycle; the bottom of said container or receptacle communicating with the inside of the washing tub via said delivering pipe.
  • a detergent dispenser comprising a container or receptacle which is located inside the casing and is structured for housing an extractable drawer which, in turn, is provided with one or more compartments dimensioned for storing a given amount of detergent and/or softener to be used in the washing cycle; the bottom of said container or receptacle communicating with the inside of the washing tub via said delivering pipe.
  • the washing tub has the mouth directly faced to a laundry loading/unloading opening realized in the front wall of the casing; and in that the laundry washing and drying machine is also provided with a bellows which connects in watertight manner the mouth of the washing tub to the laundry loading/unloading opening on the front wall of the casing.
  • the closed-circuit, hot-air generator additionally comprises: an air duct which connects the delivery of the air circulating means to the washing tub, or to the bellows which connects the mouth of the washing tub to the laundry loading/unloading opening realized in the front wall of the casing; and an electrically-powered air heater which is located inside the air duct, and is structured for rapidly heating up the airflow directed towards the washing tub along said air duct.
  • the air circulating means (15) are fixed approximately on the top of the washing tub (3).
  • number 1 indicates as a whole a preferably, though not necessarily, household, front-loading laundry washing and drying machine which comprises:
  • the washing tub 3 preferably, though not necessarily, extends inside the casing 2 coaxial to a substantially horizontally-oriented longitudinal reference axis L, and has the mouth directly faced to the laundry loading/unloading opening realized on front wall 2a; and the laundry washing and drying machine 1 is provided with a substantially cylindrical elastically-deformable bellows which connects in watertight manner the mouth of washing tub 3 to the laundry loading/unloading opening on front wall 2a of casing 2.
  • the laundry washing and drying machine 1 also comprises, inside casing 2:
  • laundry washing and drying machine 1 finally comprises a detergent dispenser 11 which is structured for supplying into washing tub 3 the detergents and/or softeners to be used in the washing cycle.
  • detergent dispenser 11 preferably, though not necessarily, comprises a substantially parallelepiped-shaped container or receptacle 12 which is associated to the front wall 2a of casing 2, immediately above washing tub 3, so as to be directly accessible from an opening realized on front wall 2a, and is structured for housing in manually-extractable manner a detergent drawer (not shown) which, in turn, is provided with one or more compartments dimensioned for storing a given amount of detergent and/or softener to be used in the washing cycle.
  • the freshwater supply circuit 8 is structured for spilling, on command, the fresh/tap water of the water mains directly into the detergent drawer fitted into the container or receptacle 12, so as to flush on the bottom of the drawer container or receptacle 12 the detergents and/or softeners previously left into the detergent drawer; and the bottom of the drawer container or receptacle 12 communicates with the inside of washing tub 3 via a large delivering pipe 13 dimensioned to channel by gravity any kind of liquid into washing tub 3.
  • the delivering pipe 13 is structured for channeling into washing tub 3 the detergents and/or softeners to be used in the washing cycle together with all the fresh/tap water that the freshwater supply circuit 8 draws from the water mains and spills into the drawer container or receptacle 12 to perform the washing cycle.
  • the detergent dispenser 11, the freshwater supply circuit 8, and the washing-water recirculating and/or draining circuit 9 are commonly known parts in the laundry washing machines technical field, and therefore wont be described in further details.
  • laundry washing and drying machine 1 is also provided with a closed-circuit, hot-air generator 14 which is structured to circulate inside washing tub 3, on command, a stream of hot air having a low moisture content, and which flows through the revolving drum and over the laundry stored inside the drum to rapidly dry the laundry.
  • hot-air generator 14 which is structured to circulate inside washing tub 3, on command, a stream of hot air having a low moisture content, and which flows through the revolving drum and over the laundry stored inside the drum to rapidly dry the laundry.
  • the hot-air generator 14 is structured for gradually drawing air from the bottom of the washing tub 3; cooling down the air arriving from washing tub 3 so to extract and retain the surplus moisture in the air; heating the dehumidified air to a predetermined temperature, normally higher than the temperature of the air arriving from washing tub 3; and finally feeding the heated, dehumidified air back into washing tub 3, where it flows over the laundry located inside the revolving drum to rapidly dry said laundry.
  • the hot-air generator 14 is, preferably, attached directly to the washing tub 3 and comprises:
  • the cold-water condenser 17 of the hot-air generator 14 is completely integrated in the rear wall 3b of washing tub 3, so as to form a one piece with the latter, and it is specifically structured so as to use the freshwater that the delivering pipe 13 channels into washing tub 3 as refrigerant for cooling down and dehumidifying the air that centrifugal fan 15 draws from washing tub 3.
  • the rear wall 3b of washing tub 3 is made of plastic material via a per-se known injection molding process, so as to have, on the outer face, a substantially C-shaped seat or recess 18 which extends close to the periphery of rear wall 3b, along an annulus sector preferably, though not necessarily, less than 120° wide; and a plenty of outwards-projecting reinforcing ribs 19 which are evenly distributed on the whole outer face of rear wall 3b, except for the annulus sector on the periphery of rear wall 3b where the C-shaped seat or recess 18 is located.
  • the lower end of the seat or recess 18 is in direct communication with the inside of washing tub 3 via a first through opening 18a located close to the bottom of washing tub 3; whereas the upper end of the seat or recess 18 is in communication with the suction of the centrifugal fan 15 via a second through opening 18b located approximately on the top of washing tub 3.
  • Through openings 18a and 18b define, respectively, the inlet and the outlet of cold-water condenser 17.
  • outwards-projecting reinforcing ribs 19 are preferably, though not necessarily, arranged on the outer face of rear wall 3b according to a substantially radially-oriented layout roughly centered to the longitudinal axis L of washing tub 3.
  • washing tub 3 further comprises a substantially flat, C-shaped lid or cover 20 which is made of plastic material; is dimensioned so to completely cover the C-shaped seat or recess 18 on rear wall 3b; and is welded to the rear wall 3b of washing tub 3 via a vibration welding process, so to hermetically close the C-shaped seat or recess 18 and to form, together with the C-shaped seat or recess 18, a substantially C-shaped, huge internal main conduit 21 which extends inside the rear wall 3b of washing tub 3, close to the periphery of the latter, along an annulus sector preferably, though not necessarily, less than 120° wide.
  • the C-shaped internal conduit 21 connects the suction of centrifugal fan 15 to the inside of washing tub 3.
  • the lower end of internal conduit 21 is in direct communication with the inside of washing tub 3, close to the bottom of the latter; whereas the upper end of internal conduit 21 directly communicates with the suction of centrifugal fan 15, so that the stream of air directed towards the centrifugal fan 15 is obliged to flow along conduit 21, from the lower to the upper end of the latter.
  • a midway section of internal conduit 21 is structured so as to be in direct communication with the delivering pipe 13 arriving from the drawer receptacle 12 of detergent dispenser 11, so that all tap water drawn from the water mains by the freshwater supply circuit 8 is channeled directly into the internal conduit 21 and it is obliged to flow by gravity towards the bottom of washing tub 3 through the lower length of internal conduit 21, counter-current to the airflow directed towards the suction of centrifugal fan 15.
  • the cold tap water arriving from delivering pipe 13 is allowed to cool down the airflow directed towards the outlet of internal conduit 21 where the centrifugal fun 15 is located, and to retain the condensed surplus moisture in said airflow.
  • the outer face of the lid or cover 20 is additionally provided with a plenty of outwards-projecting reinforcing ribs 20a which are arranged according to a substantially radially-oriented layout complementary to that of the outwards-projecting reinforcing ribs 19 on rear wall 3b, so as to cooperate, when cover 20 is rigidly welded to rear wall 3b, with the outwards-projecting reinforcing ribs 19 to stiffen the rear portion of washing tub 3.
  • the lid or cover 20 and, if present, its reinforcing ribs 20a do not protrude above the crest lines of the reinforcing ribs 19 on rear wall 3b.
  • the applicant has found that positioning the lid or cover 20 below the crest lines of the reinforcing ribs 19 significantly increases the rigidity the rear wall 3b of washing tub 3.
  • the crest lines of the reinforcing ribs 20a on the outer face of the lid or cover 20 are preferably, though not necessarily, locally substantially aligned, i.e. coplanar, to the crest lines of the reinforcing ribs 19 on rear wall 3b of washing tub 3.
  • the cold-water condenser 17 is preferably, though not necessarily, also provided with an inwards-projecting spoiler 22 which protrudes from the inner surface of internal conduit 21 immediately downstream of the inlet of the latter, i.e. immediately above the through opening 18a, and is shaped so as to generate strong turbulences in the air flowing along the lower length of internal conduit 21 towards the upper outlet of internal conduit 21; and with an inwards-projecting water slide 23 which protrudes from the inner surface of internal conduit 21 immediately upstream of the midway section of internal conduit 21 communicating with the delivering pipe 13, i.e. immediately below the intermediate through opening 18c, and is shaped so as to force all the tap water arriving from delivering pipe 13 to form a waterfall which is located approximately in the centerline of internal conduit 21.
  • an inwards-projecting spoiler 22 which protrudes from the inner surface of internal conduit 21 immediately downstream of the inlet of the latter, i.e. immediately above the through opening 18a, and is shaped so as to generate strong turbulences
  • the water slide 23 is shaped so as to collect cooling water arriving from delivering pipe 13 and to channel said water roughly in the local center of the internal conduit 21, where cooling water is allowed to fall down the lower length of the internal conduit 21 while remaining approximately in the centerline of internal conduit 21 so to cross the maximum air-turbulence zone of the conduit.
  • the water slide 23 is shaped so as to prevent the cooling water channeled into internal conduit 21 from lapping/licking against the inner surface of conduit 21 while the water flows through the condenser 17 and to direct the water approximately in the centerline of internal conduit 21 so to cross the maximum air-turbulence zone of the conduit, thereby maximizing the heat exchange between the cooling water and the moisture laden hot air.
  • the water slide 23 is shaped so as to prevent the cooling water from contacting/flowing along the inner surface of conduit 21 and to convey the cooling water to a central portion of internal conduit 21, thus maximizing the heat exchange between the cooling water falling down along the internal conduit 21, and the hot air directed towards the outlet of internal conduit 21 where the centrifugal fun 15 is located.
  • the inwards-projecting spoiler 22 is formed by two mutually faced and substantially coplanar winglets 22 protruding one from the bottom of the seat or recess 18 realized in the rear wall 3b of washing tub 3, and the other from the inner face of the lid or cover 20, and which extend one towards the other preferably, though not necessarily, so as to put the respective distal side edges in substantial abutment one against the other.
  • the inwards-projecting spoiler 22 may also consist in a single winglet which protrudes from the bottom of the seat or recess 18 realized in the rear wall 3b of washing tub 3, and extends towards the overhanging lid or cover 20 so as to put its distal side edge in substantial abutment against the inner face of the lid or cover 20.
  • the inwards-projecting water slide 23 is formed by two mutually faced and reciprocally inclined main winglets 24 and 25 which cantileverly protrude from, respectively, the bottom surface of the seat or recess 18 realized in the rear wall 3b of washing tub 3 and from the inner face of the lid or cover 20, and which extend one towards the other so as to put the respective distal side edges in abutment one against the other to form a substantially V-shaped channel which extends inside the internal conduit 21 approximately up to center of the local section of the internal conduit 21.
  • the V-shaped channel therefore fills up the whole depth of the internal conduit 21.
  • the inwards-projecting water slide 23 extends inside internal conduit 21 in a substantially radially-oriented direction, towards longitudinal axis L, and ends approximately at the center of the local section of internal conduit 21.
  • winglets 24 and 25 are mutually welded during the vibration welding process which hermetically welds the lid or cover 20 to the rear wall 3b of washing tub 3, so as to prevent the tap water arriving from delivering pipe 13 from leaking into the joint line between winglets 24 and 25.
  • the end portion of winglet 25 extends inside the volume of seat or recess 18 of rear wall 3b, towards the distal side edge of winglet 24, remaining slightly spaced apart from the lateral surface of the seat or recess 18; and the water slide 23 additionally comprises an auxiliary transversal winglet 26 which cantileverly protrudes from the lateral surface of the seat or recess 18 of rear wall 3b, immediately above winglets 24 and 25, so as to cover like a penthouse the transversal slit 27 formed between the lateral edge of winglet 25 and the surface of the seat or recess 18 on rear wall 3b.
  • the cold-water condenser 17 is preferably, though not necessarily, provided with one or more low-profiled inwards-projecting transversal ribs 28 which are located in the upper length of the internal conduit 21, and protrude from the inner surface of internal conduit 21 - i.e. from the inner surface of the seat or recess 18 of rear wall 3b, or from the rear face of the lid or cover 20 -, so as to prevent the water droplets condensed on the inner surface of internal conduit 21 from flowing upwards upon the inner surface pushed by the airflow directed towards the suction of centrifugal fun 15, up to reach the upper outlet of the internal conduit 21.
  • the cold-water condenser 17 now also serves as additional stiffening member of the rear wall 3b of washing tub 3, thus allowing a slightly reduction of the plastic material to be used in the injection molding process for realizing the substantially cup-shaped rear half-shell of washing tub 3, without any reduction in the washing-tub local structural stiffness.
  • the air duct 16 may connect the delivery of centrifugal fan 15 directly to the washing tub 3, very close to the mouth of the revolving drum, so as to channel and direct the airflow arriving from the centrifugal fan 15 directly into the mouth of the revolving drum.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP10171465A 2010-07-30 2010-07-30 Laundry washing and drying machine Active EP2412861B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP10171465A EP2412861B1 (en) 2010-07-30 2010-07-30 Laundry washing and drying machine
RU2011132191/12A RU2011132191A (ru) 2010-07-30 2011-07-29 Стиральная машина с сушкой
CN2011102147878A CN102409507A (zh) 2010-07-30 2011-07-29 洗衣、干衣机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10171465A EP2412861B1 (en) 2010-07-30 2010-07-30 Laundry washing and drying machine

Publications (2)

Publication Number Publication Date
EP2412861A1 EP2412861A1 (en) 2012-02-01
EP2412861B1 true EP2412861B1 (en) 2013-03-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10171465A Active EP2412861B1 (en) 2010-07-30 2010-07-30 Laundry washing and drying machine

Country Status (3)

Country Link
EP (1) EP2412861B1 (zh)
CN (1) CN102409507A (zh)
RU (1) RU2011132191A (zh)

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EP2843117A1 (en) * 2013-08-27 2015-03-04 Electrolux Appliances Aktiebolag Rotary-drum laundry dryer
JP2018086229A (ja) * 2016-11-24 2018-06-07 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． ドラム式洗濯機
US10538871B2 (en) * 2016-11-24 2020-01-21 Samsung Electronics Co., Ltd. Washing machine
EP3330428B1 (en) * 2016-11-30 2020-11-18 BSH Hausgeräte GmbH Tub of a clothes drying appliance
CN111088673A (zh) * 2018-10-24 2020-05-01 博西华电器（江苏）有限公司 干衣机的桶、桶的制造方法及具有该桶的干衣机
CN109554901B (zh) * 2018-11-02 2020-12-01 海信（山东）冰箱有限公司 一种烘干洗衣机

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JP3517618B2 (ja) * 1999-10-21 2004-04-12 株式会社東芝 ドラム式洗濯乾燥機
KR100456953B1 (ko) * 2002-09-10 2004-11-10 삼성전자주식회사 건조장치를 갖춘 드럼세탁기
KR100629333B1 (ko) * 2004-04-09 2006-09-29 엘지전자 주식회사 세탁기의 가열장치 및 세탁방법
KR100661645B1 (ko) * 2004-11-17 2006-12-26 삼성전자주식회사 세탁기
KR100631574B1 (ko) * 2005-08-13 2006-10-09 엘지전자 주식회사 응축식 세탁건조기
EP2149635B1 (en) 2008-08-01 2013-11-27 Electrolux Home Products Corporation N.V. Washer dryer with integrated condenser to the washing group

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CN102409507A (zh) 2012-04-11
EP2412861A1 (en) 2012-02-01
RU2011132191A (ru) 2013-02-10

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