EP2898133B1 - A laundry washing and drying machine comprising a condenser - Google Patents

A laundry washing and drying machine comprising a condenser Download PDF

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Publication number
EP2898133B1
EP2898133B1 EP13759717.5A EP13759717A EP2898133B1 EP 2898133 B1 EP2898133 B1 EP 2898133B1 EP 13759717 A EP13759717 A EP 13759717A EP 2898133 B1 EP2898133 B1 EP 2898133B1
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Prior art keywords
condenser
air
air channel
water
nozzles
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EP13759717.5A
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German (de)
French (fr)
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EP2898133A1 (en
Inventor
Celal Vatansever
Dogan Demirhan
Mehmet Durmaz
Talip Caglar
Mehmet Ozbek
Ali Levent Hasanreisoglu
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Arcelik AS
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Arcelik AS
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    • 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 
    • D06F58/22—Lint collecting arrangements
    • 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 that comprises a condenser.
  • Fibers and lint accumulating in the condenser form a layer on the air channel surface and adversely affect the heat transfer and the efficiency of the condenser.
  • the decreasing efficiency of the condenser increases the drying time and energy consumption.
  • Water spraying devices are used to cleanse the fibers and lint formed at the end of the drying cycle; however, fibers and lint accumulating especially in the very narrow air channels inside the condensers cannot be properly cleansed.
  • the aim of the present invention is the realization of a laundry washing and drying machine wherein the fibers and lint accumulating in the condenser are provided to be cleansed.
  • the laundry washing and drying machine realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises an air-cooled condenser that is situated at the circulation duct wherein the processing air cycle, providing the laundry to be dried at the drying process after the washing process, is performed.
  • the condenser has air channels extending in the flow direction of the processing air. Tube-shaped spraying devices are disposed into the air channels. The spraying devices receive water from a water dispenser placed at the condenser inlet or the condenser outlet and carry the water into the air channels, thus providing the fibers and lint to be cleansed.
  • Nozzles branching off from the spraying devices oppositely extend in the opposite directions into the air channels and jets of water sprayed from the nozzles are collided against each other, thus providing the fibers and lint sticking onto the air channels to be efficiently cleansed.
  • each air channel two spraying devices are disposed, extending along the right and left sides of the channel.
  • the nozzles facing each other on the spraying devices spray water towards each other, and jets of water sprayed from both sides are provided to be collided in the middle of the air channel.
  • water is sprayed into the air channel by means of two nozzles situated oppositely on the spraying devices at the condenser inlet side, two nozzles situated oppositely at the condenser outlet side and two nozzles situated oppositely in the middle of the spraying devices and close to the condenser inlet. Jets of water sprayed from the nozzles generate a vortex in the middle of the air channel and the fibers and lint sticking onto the lower and upper surfaces of the air channel are efficiently cleansed.
  • the nozzles on the spraying devices spray water angularly to the condenser inlet and especially the condenser inlet where the fibers and lint densely accumulate is efficiently cleansed.
  • the spraying device is placed longitudinally at the middle of the condenser air channel and the nozzles extending sideways in opposite directions from the spraying device spray water to the air channel.
  • the condenser is placed onto the tub in an inclined manner, the spraying device extends from the condenser outlet towards the condenser inlet and the water sprayed flows downwards through the inclined air channel and leaves the condenser.
  • the fibers and lint sticking onto the surfaces surrounding the condenser air channels are efficiently cleansed by means of the spraying devices and the nozzles extending into the air channels, thus the efficiency of the condenser is improved.
  • the laundry washing and drying machine (1) is horizontal axis and front loading type, and comprises a drum (2) wherein the laundry is placed, a tub (3) wherein the drum (2) moves, a circulation duct (4) wherein the processing air (PA) circulation, providing the drying of the laundry, is performed in the drying process after the washing process, a fan (5) that provides circulation of the processing air (PA) in the circulation duct (4), a heater (13) heating the processing air (PA), an air-cooled condenser (7) disposed onto the circulation duct (4), having at least one air channel (6) wherein the processing air (PA) passing therethrough is condensed, a condenser inlet (8) through which the processing air (PA) enters the condenser (7) and a condenser outlet (9) through which the processing air (PA) leaves the condenser (7).
  • a condenser inlet (8) through which the processing air (PA) enters the condenser (7)
  • a condenser outlet (9) through which the processing air
  • the laundry washing and drying machine (1) of the present invention comprises
  • the processing air (PA) passing over the laundry and becoming humid is delivered to the condenser (7) by passing from the tub (3) outlet by means of the circulation duct (4) and is condensed by passing through the air channels (6) in the condenser (7).
  • the fibers and lint formed as the result of the laundry rubbing against the drum (2) and each other are conveyed by the processing air (PA) and accumulate at the condenser inlet (8) and in the air channels (6) inside the condenser (7).
  • the spraying device (11) is operated for cleansing the fibers and lint at the end of the drying process.
  • the water received from the mains is carried to the air channel (6) by means of the dispenser (10) and the spraying device (11).
  • the water sprayed into the air channel (6) from the nozzles (12) cleanses the fibers and lint accumulating at the condenser inlet (8) and on the surfaces surrounding the air channel (6).
  • the nozzles (12) are positioned on the spraying device (11) in the opposite directions and facing each other, and the jets of water sprayed from the nozzles (12) are provided to be collided with each other and/or to hit the surfaces surrounding the air channel (6), thus to be stirred and agitated.
  • the jets of water sprayed from the nozzles (12) almost completely contact the surfaces surrounding the air channel (6) and the air channel (6) is efficiently cleansed of fibers and lint.
  • the laundry washing and drying machine (1) comprises two spraying devices (11) that extend between the condenser inlet (8) and the condenser outlet (9) in the processing air (PA) flow direction and that are placed right and left at the sides of the air channel (6), and the nozzles (12) positioned oppositely and facing each other on the spraying devices (11) such that the jets of water sprayed thereby collide at the middle of the air channel (6) ( Figure 2 , Figure 3, Figure 4 ).
  • the jets of water sprayed by the nozzles (12) from the sides of the air channel (6) toward the middle thereof collide at the middle of the air channel (6) and the lower and upper surfaces of the air channel (6) are provided to be efficiently cleansed.
  • the laundry washing and drying machine (1) comprises two nozzles (12) positioned oppositely on the spraying devices (11) at the condenser inlet (8) side, two nozzles (12) positioned oppositely on the spraying devices (11) at the condenser outlet (9) side and two nozzles (12) positioned oppositely on the spraying devices (11) at the middle of the spraying devices (11) so as to be close to the nozzles (12) at the condenser inlet (8) ( Figure 4 ).
  • the jets of water sprayed from the nozzles (12) at the condenser inlet (8) side collide at the middle of the air channel (6) and cleanse the condenser inlet (8).
  • the jets of water sprayed from the opposite nozzles (12) at the middle of the spraying devices (11) and at the condenser outlet (9) side form a vortex at the middle of the air channel (6) and spread in a wide area, thus provides this region to be efficiently cleansed of fibers and lint.
  • the water vortex furthermore, creates a barrier against the jets of water that are sprayed from the nozzles (12) at the condenser inlet (8) side into the air channel (6) and that flow towards the condenser outlet (9), thus the water is provided to stay in the air channel (6) for a longer period of time.
  • the nozzles (12) on the spraying devices (11) spray water angularly to the condenser inlet (8) ( Figure 4 ).
  • the water sprayed from the nozzles (12) moves inside the air channel (6) towards the condenser inlet (8) and the condenser inlet (8) is provided to be washed with a large amount of water.
  • the laundry washing and drying machine (1) comprises the spraying device (11) that extends between the condenser inlet (8) and the condenser outlet (9) in the processing air (PA) flow direction and that is placed at the middle of the air channel (6), and more than one nozzle (12) positioned at the right and left of the spraying device (11), in opposite directions with respect to each other, spraying water towards the sides of the air channel (6) ( Figure 5 ).
  • the condenser (7) is placed at the upper side of the tub (3) in an inclined manner so that the condenser inlet (8) is above the condenser outlet (9) level and the air channel (6) extends downhill from the condenser inlet (8) towards the condenser outlet (9) in an inclined manner ( Figure 1 , Figure 2 ).
  • the dispenser (10) is placed at the condenser outlet (9) and the water spraying device (11) carries the water uphill inside the air channel (6) from the condenser outlet (9) towards the condenser inlet (8) in an opposite direction to the processing air (PA) flow direction (there is no processing air (PA) flow during the condenser (7) washing process, the term "processing air (PA) flow direction" is provided only for defining the said directions).
  • the jets of water oppositely sprayed from the nozzles (12) branching out in opposite directions from the spraying devices (11) that extend into the condenser (7) air channel (6) are collided and a water agitation effect is created inside the air channel (6).
  • the fibers and lint accumulating in the condenser (7) air channel (6), especially at the condenser inlet (8) and the lower and upper surfaces of the air channel (6), are efficiently cleansed.
  • the efficiency of the condenser (7) is improved, the duration of the drying process is shortened and energy saving is provided.

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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)

Description

  • The present invention relates to a laundry washing and drying machine that comprises a condenser.
  • In laundry washing and drying machines, air-cooled condensers are widely used, which realize the condensation process by using the outer environment air in the drying process after washing. The humid air that comes from over the laundry and passes through the processing air duct is condensed in the condenser cooled by means of the outer environment air, thus the air that is dried by being dehumidified is sent again onto the laundry through the processing air duct. During the drying process, fibers and lint are formed as the result of laundry rubbing against each other or the drum and these are carried to the condenser together with the drying air. Fibers and lint accumulate especially at the inlets and the inner surfaces of the processing air passage ducts in the condenser. Fibers and lint accumulating in the condenser form a layer on the air channel surface and adversely affect the heat transfer and the efficiency of the condenser. The decreasing efficiency of the condenser increases the drying time and energy consumption. Water spraying devices are used to cleanse the fibers and lint formed at the end of the drying cycle; however, fibers and lint accumulating especially in the very narrow air channels inside the condensers cannot be properly cleansed.
  • In the state of the art European Patent Application No. EP2169107 , a spraying device is described, providing the condenser disposed in a dryer to be washed and thus cleaned of fiber and lint at the end of the drying process.
  • The aim of the present invention is the realization of a laundry washing and drying machine wherein the fibers and lint accumulating in the condenser are provided to be cleansed.
  • The laundry washing and drying machine realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises an air-cooled condenser that is situated at the circulation duct wherein the processing air cycle, providing the laundry to be dried at the drying process after the washing process, is performed. The condenser has air channels extending in the flow direction of the processing air. Tube-shaped spraying devices are disposed into the air channels. The spraying devices receive water from a water dispenser placed at the condenser inlet or the condenser outlet and carry the water into the air channels, thus providing the fibers and lint to be cleansed. Nozzles branching off from the spraying devices oppositely extend in the opposite directions into the air channels and jets of water sprayed from the nozzles are collided against each other, thus providing the fibers and lint sticking onto the air channels to be efficiently cleansed.
  • In an embodiment of the present invention, into each air channel, two spraying devices are disposed, extending along the right and left sides of the channel. The nozzles facing each other on the spraying devices spray water towards each other, and jets of water sprayed from both sides are provided to be collided in the middle of the air channel.
  • In another embodiment of the present invention, water is sprayed into the air channel by means of two nozzles situated oppositely on the spraying devices at the condenser inlet side, two nozzles situated oppositely at the condenser outlet side and two nozzles situated oppositely in the middle of the spraying devices and close to the condenser inlet. Jets of water sprayed from the nozzles generate a vortex in the middle of the air channel and the fibers and lint sticking onto the lower and upper surfaces of the air channel are efficiently cleansed.
  • In another embodiment of the present invention, the nozzles on the spraying devices spray water angularly to the condenser inlet and especially the condenser inlet where the fibers and lint densely accumulate is efficiently cleansed.
  • In another embodiment of the present invention, the spraying device is placed longitudinally at the middle of the condenser air channel and the nozzles extending sideways in opposite directions from the spraying device spray water to the air channel.
  • In an embodiment of the present invention, the condenser is placed onto the tub in an inclined manner, the spraying device extends from the condenser outlet towards the condenser inlet and the water sprayed flows downwards through the inclined air channel and leaves the condenser.
  • In the laundry washing and drying machine of the present invention, the fibers and lint sticking onto the surfaces surrounding the condenser air channels are efficiently cleansed by means of the spraying devices and the nozzles extending into the air channels, thus the efficiency of the condenser is improved.
  • The laundry washing and drying machine realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
    • Figure 1 - is the schematic view of a laundry washing and drying machine.
    • Figure 2 - is the perspective view of the tub, the circulation duct and the condenser all situated in a laundry washing and drying machine.
    • Figure 3 - is the schematic view wherein a condenser and spraying devices therein are perpendicular to the processing air flow.
    • Figure 4 - is the schematic view wherein a condenser and spraying devices therein are in the same direction as the processing air flow.
    • Figure 5 - is the schematic view wherein a condenser and spraying devices therein are perpendicular to the processing air flow in another embodiment of the present invention.
  • The elements illustrated in the figures are numbered as follows:
    1. 1. Laundry washing and drying machine
    2. 2. Drum
    3. 3. Tub
    4. 4. Circulation duct
    5. 5. Fan
    6. 6. Air channel
    7. 7. Condenser
    8. 8. Condenser inlet
    9. 9. Condenser outlet
    10. 10. Dispenser
    11. 11. Spraying device
    12. 12. Nozzle
    13. 13. Heater
  • The laundry washing and drying machine (1) is horizontal axis and front loading type, and comprises a drum (2) wherein the laundry is placed, a tub (3) wherein the drum (2) moves, a circulation duct (4) wherein the processing air (PA) circulation, providing the drying of the laundry, is performed in the drying process after the washing process, a fan (5) that provides circulation of the processing air (PA) in the circulation duct (4), a heater (13) heating the processing air (PA), an air-cooled condenser (7) disposed onto the circulation duct (4), having at least one air channel (6) wherein the processing air (PA) passing therethrough is condensed, a condenser inlet (8) through which the processing air (PA) enters the condenser (7) and a condenser outlet (9) through which the processing air (PA) leaves the condenser (7).
  • The laundry washing and drying machine (1) of the present invention comprises
    • a dispenser (10) that is placed at the condenser inlet (8) or the condenser outlet (9) and that directs the water received from the water mains to the air channel (6) during the fiber and lint cleansing process performed at the end of the drying process,
    • at least one tube-shaped spraying device (11) that is connected to the dispenser (10), that is placed into the air channels (6) and that carries the water coming from the dispenser (10) into the air channel (6), and
    • more than one nozzle (12) that are situated on the spraying device (11) and that sprays water into the air channel (6) in the opposite directions and towards each other.
  • In the laundry washing and drying machine (1), during the drying process, the processing air (PA) passing over the laundry and becoming humid is delivered to the condenser (7) by passing from the tub (3) outlet by means of the circulation duct (4) and is condensed by passing through the air channels (6) in the condenser (7). During the drying process, the fibers and lint formed as the result of the laundry rubbing against the drum (2) and each other are conveyed by the processing air (PA) and accumulate at the condenser inlet (8) and in the air channels (6) inside the condenser (7). The spraying device (11) is operated for cleansing the fibers and lint at the end of the drying process. The water received from the mains is carried to the air channel (6) by means of the dispenser (10) and the spraying device (11). The water sprayed into the air channel (6) from the nozzles (12) cleanses the fibers and lint accumulating at the condenser inlet (8) and on the surfaces surrounding the air channel (6). The nozzles (12) are positioned on the spraying device (11) in the opposite directions and facing each other, and the jets of water sprayed from the nozzles (12) are provided to be collided with each other and/or to hit the surfaces surrounding the air channel (6), thus to be stirred and agitated. The jets of water sprayed from the nozzles (12) almost completely contact the surfaces surrounding the air channel (6) and the air channel (6) is efficiently cleansed of fibers and lint.
  • In an embodiment of the present invention, the laundry washing and drying machine (1) comprises two spraying devices (11) that extend between the condenser inlet (8) and the condenser outlet (9) in the processing air (PA) flow direction and that are placed right and left at the sides of the air channel (6), and the nozzles (12) positioned oppositely and facing each other on the spraying devices (11) such that the jets of water sprayed thereby collide at the middle of the air channel (6) (Figure 2, Figure 3, Figure 4). The jets of water sprayed by the nozzles (12) from the sides of the air channel (6) toward the middle thereof collide at the middle of the air channel (6) and the lower and upper surfaces of the air channel (6) are provided to be efficiently cleansed.
  • In another embodiment of the present invention, the laundry washing and drying machine (1) comprises two nozzles (12) positioned oppositely on the spraying devices (11) at the condenser inlet (8) side, two nozzles (12) positioned oppositely on the spraying devices (11) at the condenser outlet (9) side and two nozzles (12) positioned oppositely on the spraying devices (11) at the middle of the spraying devices (11) so as to be close to the nozzles (12) at the condenser inlet (8) (Figure 4).
  • The jets of water sprayed from the nozzles (12) at the condenser inlet (8) side collide at the middle of the air channel (6) and cleanse the condenser inlet (8). The jets of water sprayed from the opposite nozzles (12) at the middle of the spraying devices (11) and at the condenser outlet (9) side form a vortex at the middle of the air channel (6) and spread in a wide area, thus provides this region to be efficiently cleansed of fibers and lint. The water vortex, furthermore, creates a barrier against the jets of water that are sprayed from the nozzles (12) at the condenser inlet (8) side into the air channel (6) and that flow towards the condenser outlet (9), thus the water is provided to stay in the air channel (6) for a longer period of time.
  • In another embodiment of the present invention, the nozzles (12) on the spraying devices (11) spray water angularly to the condenser inlet (8) (Figure 4). In this embodiment, the water sprayed from the nozzles (12) moves inside the air channel (6) towards the condenser inlet (8) and the condenser inlet (8) is provided to be washed with a large amount of water.
  • In another embodiment of the present invention, the laundry washing and drying machine (1) comprises the spraying device (11) that extends between the condenser inlet (8) and the condenser outlet (9) in the processing air (PA) flow direction and that is placed at the middle of the air channel (6), and more than one nozzle (12) positioned at the right and left of the spraying device (11), in opposite directions with respect to each other, spraying water towards the sides of the air channel (6) (Figure 5).
  • In another embodiment of the present invention, the condenser (7) is placed at the upper side of the tub (3) in an inclined manner so that the condenser inlet (8) is above the condenser outlet (9) level and the air channel (6) extends downhill from the condenser inlet (8) towards the condenser outlet (9) in an inclined manner (Figure 1, Figure 2). The dispenser (10) is placed at the condenser outlet (9) and the water spraying device (11) carries the water uphill inside the air channel (6) from the condenser outlet (9) towards the condenser inlet (8) in an opposite direction to the processing air (PA) flow direction (there is no processing air (PA) flow during the condenser (7) washing process, the term "processing air (PA) flow direction" is provided only for defining the said directions). Some of the water sprayed by means of the nozzles (12) from the spraying device (11) to the air channel (6) moves uphill inside the air channel (6) with the effect of the pressure to be carried to the condenser inlet (8) and cleanses the condenser inlet (8), then flows downhill inside the air channel (6) due to the inclination and leaves the condenser (7) via the condenser outlet (9).
  • In the laundry washing and drying machine (1) of the present invention, the jets of water oppositely sprayed from the nozzles (12) branching out in opposite directions from the spraying devices (11) that extend into the condenser (7) air channel (6) are collided and a water agitation effect is created inside the air channel (6). The fibers and lint accumulating in the condenser (7) air channel (6), especially at the condenser inlet (8) and the lower and upper surfaces of the air channel (6), are efficiently cleansed. The efficiency of the condenser (7) is improved, the duration of the drying process is shortened and energy saving is provided.
  • It is to be understood that the present invention is not limited by the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims (6)

  1. A laundry washing and drying machine (1) comprising
    - a drum (2) wherein the laundry is placed,
    - a tub (3) wherein the drum (2) moves,
    - a circulation duct (4) wherein the processing air (PA) circulation, providing the drying of the laundry, is performed in the drying process after the washing process,
    - a fan (5) that provides circulation of the processing air (PA) in the circulation duct (4),
    - an air-cooled condenser (7) disposed onto the circulation duct (4), having at least one air channel (6) wherein the processing air (PA) passing therethrough is condensed,
    - a condenser inlet (8) through which the processing air (PA) enters the condenser (7),
    - a condenser outlet (9) through which the processing air (PA) leaves the condenser (7),
    - a dispenser (10) that is placed at the condenser inlet (8) or the condenser outlet (9) and that directs the water to the air channel (6) during the fiber and lint cleansing process performed at the end of the drying process,
    - at least one spraying device (11) that is connected to the dispenser (10), that is placed into the air channels (6) and that carries the water coming from the dispenser (10) into the air channel (6),
    characterized in that
    - the dispenser (10) receives water from the water mains, and
    - more than one nozzle (12) are situated on the spraying device (11) and spray water into the air channel (6) in the opposite directions and towards each other.
  2. A laundry washing and drying machine (1) as in Claim 1, characterized by two spraying devices (11) that extend between the condenser inlet (8) and the condenser outlet (9) in the processing air (PA) flow direction and that are placed at the sides of the air channel (6), and the nozzles (12) positioned oppositely and facing each other on the spraying devices (11).
  3. A laundry washing and drying machine (1) as in Claim 1 or 2, characterized by two nozzles (12) positioned oppositely on the spraying devices (11) at the condenser inlet (8) side, two nozzles (12) positioned oppositely on the spraying devices (11) at the condenser outlet (9) side and two nozzles (12) positioned oppositely on the spraying devices (11) at the middle of the spraying devices (11) so as to be close to the condenser inlet (8).
  4. A laundry washing and drying machine (1) as in any one of the above claims, characterized by the nozzles (12) on the spraying devices (11), spraying water angularly to the condenser inlet (8).
  5. A laundry washing and drying machine (1) as in any one of the above claims, characterized by the spraying device (11) that extends between the condenser inlet (8) and the condenser outlet (9) in the processing air (PA) flow direction and that is placed at the middle of the air channel (6), and more than one nozzle (12) positioned at the right and left of the spraying device (11), in opposite directions with respect to each other, spraying water towards the sides of the air channel (6).
  6. A laundry washing and drying machine (1) as in any one of the above claims, characterized by the air channel (6) extending downhill from the condenser inlet (8) towards the condenser outlet (9), the dispenser (10) placed at the condenser outlet (9) and the water spraying device (11) that carries the water inside the air channel (6) from the condenser outlet (9) towards the condenser inlet (8).
EP13759717.5A 2012-09-24 2013-09-04 A laundry washing and drying machine comprising a condenser Active EP2898133B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201210867 2012-09-24
PCT/EP2013/068298 WO2014044530A1 (en) 2012-09-24 2013-09-04 A laundry washing and drying machine comprising a condenser

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EP2898133A1 EP2898133A1 (en) 2015-07-29
EP2898133B1 true EP2898133B1 (en) 2016-12-07

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CN (1) CN104968853B (en)
WO (1) WO2014044530A1 (en)

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TR201514003A2 (en) 2015-11-09 2017-05-22 Arcelik As A WASHER / DRYER WITH CONDENSER
KR102428247B1 (en) * 2016-01-05 2022-08-02 엘지전자 주식회사 Laundry treating apparatus and control method for feed water valve thereof
CN106012412B (en) * 2016-06-30 2018-11-27 宁波远志立方能源科技有限公司 Washing-drying integral machine based on gas condensing unit
CN116200925A (en) * 2021-12-01 2023-06-02 广东美的白色家电技术创新中心有限公司 Clothes treatment equipment

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