WO2012146533A2 - Heat pump laundry dryer - Google Patents

Heat pump laundry dryer Download PDF

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Publication number
WO2012146533A2
WO2012146533A2 PCT/EP2012/057209 EP2012057209W WO2012146533A2 WO 2012146533 A2 WO2012146533 A2 WO 2012146533A2 EP 2012057209 W EP2012057209 W EP 2012057209W WO 2012146533 A2 WO2012146533 A2 WO 2012146533A2
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
condenser
guiding means
laundry dryer
drain channel
Prior art date
Application number
PCT/EP2012/057209
Other languages
French (fr)
Other versions
WO2012146533A3 (en
Inventor
Onder Balioglu
Can Sar
Dogan Demirhan
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to ES12715399.7T priority Critical patent/ES2589809T3/en
Priority to EP12715399.7A priority patent/EP2702198B1/en
Publication of WO2012146533A2 publication Critical patent/WO2012146533A2/en
Publication of WO2012146533A3 publication Critical patent/WO2012146533A3/en

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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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump 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 heat pump laundry dryer.
  • the heat pump used for drying the laundry is composed of the compressor that moves the refrigerant fluid and heat sinks named as evaporator and condenser.
  • the laundry-drying process is performed by passing hot and dry air (processing air, drying air) over the laundry. Humid air leaving the laundry leaves its moisture while passing over the evaporator that works as the condenser and warms while passing over the condenser that works as the heater. The air that leaves its moisture and warms up is sent onto the laundry throughout the drying cycle.
  • the evaporator is composed of a refrigerant tube in serpentine form and fins arranged on the refrigerant tube.
  • the humid air condensing on the evaporator fins trickles down as water droplets due to the effect of the gravity and these droplets accumulate in the drain channel between the evaporator and the condenser.
  • the air passing over the evaporator gets humid again by contacting the water in the drain channel and causes the condenser to get wet and its heating performance to decrease.
  • JP2004240737 relates to a heat pump laundry dryer, the drying performance of which is improved.
  • the aim of the present invention is the realization of a heat pump laundry dryer wherein the heating efficiency of the condenser thereof is improved.
  • the laundry dryer realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a ventilation duct wherein the processing air cycle is realized and an evaporator and a condenser placed into the said channel and the humid air condensing at the evaporator trickles down from the evaporator as water droplets and these droplets accumulate in the drain channel extending between the evaporator and the condenser.
  • the laundry dryer furthermore comprises a guiding means that extends from the condenser towards the evaporator with a downward inclination by at least partially covering the drain channel, that prevents the air coming from the evaporator from entering into the drain channel and that, at the same time, guides the condensation water scattered from the evaporator due to the effect of the airflow, towards the drain channel without entering into the condenser.
  • the laundry dryer comprises a conduit arranged between the guiding means and the evaporator, that provides the condensation water guided downward by the guiding means due to its inclination, to flow into the drain channel.
  • the guiding means extends on the drain channel, between the condenser and the conduit.
  • the guiding means is L-shaped, arranged in the ventilation duct, at the lower part of the condenser; and the parts of the guiding means that guide the air and the water protrude outwards from the lower edges of the condenser.
  • the guiding means arranged between the condenser and the evaporator so as to cover the drain channel prevents the processing air coming from the evaporator from being humidified and guides it to the condenser, and, thanks to its downward inclined shape, prevents the condensate water that is scattered from the evaporator towards the condenser as droplets with the airflow and that falls downwards through the gap between the evaporator and the condenser with the effect of the gravity, from moving towards the condenser and thus prevents the condenser from getting wet, increasing the heating efficiency of the condenser.
  • Figure 1 - is the schematic view of a heat pump laundry dryer.
  • Figure 2 - is the perspective view of the part of the ventilation duct in a heat pump laundry dryer wherein the evaporator and the condenser are placed.
  • Figure 3 - is the schematic view of the part of the ventilation duct in a heat pump laundry dryer wherein the evaporator and the condenser are placed, and the schematic view of the L-shaped guiding means placed under the condenser.
  • the heat pump laundry dryer (1) comprises a drum (2) wherein the laundry to be dried is placed, a ventilation duct (3) wherein the processing air (drying air) cycle is realized, a fan (4) providing the circulation of the processing air, a compressor (5) providing the refrigerant cycle, an evaporator (6) placed into the ventilation duct (3), that condenses the humid processing air, a condenser (7) placed into the ventilation duct (3), that heats the processing air dehumidified at the evaporator (6) and a pump (8) providing the condensate water to be discharged.
  • the laundry dryer (1) of the present invention comprises a drain channel (9) that extends between the evaporator (6) and the condenser (7) and that provides the condensate water coming from the evaporator (6) to be delivered to the pump (8) in order to be discharged and a guiding means (10) that extends from the condenser (7) towards the evaporator (6) by at least partially covering the drain channel (9), that prevents the air coming from the evaporator (6) from entering into the drain channel (9) and guides it to the condenser (7) and that prevents the condensate water coming from the evaporator (6) due to the effect of the processing air from entering into the condenser (7) and guides it to the drain channel (9).
  • the processing air humidified by passing over the laundry in the drum (2) is passed over the evaporator (6) and the condenser (7) in the ventilation duct (3).
  • the evaporator (6) condenses and dehumidifies the processing air, and the condenser (7) heats the dehumidified processing air coming from the evaporator (6).
  • the processing air coming from the evaporator (6) passes over the drain channel (9) located between the condenser (7) and the evaporator (6), and the guiding means (10) placed onto the drain channel (9) prevents the processing air from contacting the water accumulating in the drain channel (9) and provides it to be guided to the condenser (7) without being humidified.
  • the guiding means (10) separately guides the processing air and the condensate water coming from the evaporator (6), thus the heating efficiency is increased by preventing the condenser (7) from getting wet.
  • the laundry dryer (1) furthermore, comprises a conduit (11) arranged between the guiding means (10) and the evaporator (6), that provides the condensate water coming from the evaporator (6) and guided by the guiding means (10) to flow into the drain channel (9).
  • the guiding means (10) extends from the condenser (7) towards the evaporator (6), between the condenser (7) and the conduit (11) with a downwards inclination ( Figure 1, Figure 2).
  • the condensate water moving from the evaporator (6) towards the condenser (7) by passing over the conduit (11) without flowing downwards through the conduit (11) due to the effect of the processing air is provided to move backwards due to the effect of the guiding means (10) inclined in a direction opposite to the moving direction of the water and to flow from the conduit (11) into the drain channel (9).
  • the guiding means (10) is L-shaped, arranged in the ventilation duct (3), at the lower part of the condenser (7); and the parts of the guiding means (10) that are inclined, meaning the parts that guide the air and the water protrude outwards from the lower edges of the condenser (7) ( Figure 3).
  • the guiding means (10) serves as a supporting means that maintains the position of the condenser (7) in the ventilation duct (3).
  • the guiding means (10) extending from the condenser (7) towards the evaporator (6) prevents the processing air coming from the evaporator (6) from contacting the water in the drain channel (9) thus from getting wet and guides it to the condenser (7), prevents the condensate water discharged from the evaporator (6) from moving towards the condenser (7) due to its downward inclined structure, thus preventing the condenser (7) from getting wet, and increases the processing-air-heating efficiency of the condenser (7).

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

Abstract

The present invention relates to a heat pump laundry dryer (1) comprising a drum (2) wherein the laundry to be dried is placed, a ventilation duct (3) wherein the processing air cycle is realized, a fan (4) providing the circulation of the processing air, a compressor (5) providing the refrigerant cycle, an evaporator (6) placed into the ventilation duct (3), that condenses the humid processing air, a condenser (7) placed into the ventilation duct (3), that heats the processing air dehumidified at the evaporator (6), a pump (8) providing the condensate water to be discharged and a drain channel (9) that extends between the evaporator (6) and the condenser (7) and that provides the condensate water coming from the evaporator (6) to be delivered to the pump (8) in order to be discharged.

Description

HEAT PUMP LAUNDRY DRYER
The present invention relates to a heat pump laundry dryer.
In heat pump laundry dryers wherein closed cycle drying process is applied, the heat pump used for drying the laundry is composed of the compressor that moves the refrigerant fluid and heat sinks named as evaporator and condenser. The laundry-drying process is performed by passing hot and dry air (processing air, drying air) over the laundry. Humid air leaving the laundry leaves its moisture while passing over the evaporator that works as the condenser and warms while passing over the condenser that works as the heater. The air that leaves its moisture and warms up is sent onto the laundry throughout the drying cycle. The evaporator is composed of a refrigerant tube in serpentine form and fins arranged on the refrigerant tube. The humid air condensing on the evaporator fins trickles down as water droplets due to the effect of the gravity and these droplets accumulate in the drain channel between the evaporator and the condenser. The air passing over the evaporator gets humid again by contacting the water in the drain channel and causes the condenser to get wet and its heating performance to decrease.
In the state of the art Japanese Patent Application No. JP2006122466, a laundry washer/dryer is explained, wherein the processing air is prevented from entering into the drain channel that provides the discharge of the water condensing in the evaporator.
In the state of the art Japanese Patent Application No. JP2009247600, a laundry dryer is explained, wherein the discharge of the water condensing in the evaporator is facilitated.
The state of the art Japanese Patent Application No. JP2004240737 relates to a heat pump laundry dryer, the drying performance of which is improved.
The aim of the present invention is the realization of a heat pump laundry dryer wherein the heating efficiency of the condenser thereof is improved.
The laundry dryer realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a ventilation duct wherein the processing air cycle is realized and an evaporator and a condenser placed into the said channel and the humid air condensing at the evaporator trickles down from the evaporator as water droplets and these droplets accumulate in the drain channel extending between the evaporator and the condenser. The laundry dryer furthermore comprises a guiding means that extends from the condenser towards the evaporator with a downward inclination by at least partially covering the drain channel, that prevents the air coming from the evaporator from entering into the drain channel and that, at the same time, guides the condensation water scattered from the evaporator due to the effect of the airflow, towards the drain channel without entering into the condenser.
In an embodiment of the present invention, the laundry dryer comprises a conduit arranged between the guiding means and the evaporator, that provides the condensation water guided downward by the guiding means due to its inclination, to flow into the drain channel. The guiding means extends on the drain channel, between the condenser and the conduit.
In another embodiment of the present invention, the guiding means is L-shaped, arranged in the ventilation duct, at the lower part of the condenser; and the parts of the guiding means that guide the air and the water protrude outwards from the lower edges of the condenser.
In the laundry dryer of the present invention, the guiding means arranged between the condenser and the evaporator so as to cover the drain channel prevents the processing air coming from the evaporator from being humidified and guides it to the condenser, and, thanks to its downward inclined shape, prevents the condensate water that is scattered from the evaporator towards the condenser as droplets with the airflow and that falls downwards through the gap between the evaporator and the condenser with the effect of the gravity, from moving towards the condenser and thus prevents the condenser from getting wet, increasing the heating efficiency of the condenser.
The laundry dryer 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 heat pump laundry dryer.
Figure 2 - is the perspective view of the part of the ventilation duct in a heat pump laundry dryer wherein the evaporator and the condenser are placed.
Figure 3 - is the schematic view of the part of the ventilation duct in a heat pump laundry dryer wherein the evaporator and the condenser are placed, and the schematic view of the L-shaped guiding means placed under the condenser.
The elements illustrated in the figures are numbered as follows:
  1. Laundry dryer
  2. Drum
  3. Ventilation duct
  4. Fan
  5. Compressor
  6. Evaporator
  7. Condenser
  8. Pump
  9. Drain channel
  10. Guiding means
  11. Conduit
The heat pump laundry dryer (1) comprises a drum (2) wherein the laundry to be dried is placed, a ventilation duct (3) wherein the processing air (drying air) cycle is realized, a fan (4) providing the circulation of the processing air, a compressor (5) providing the refrigerant cycle, an evaporator (6) placed into the ventilation duct (3), that condenses the humid processing air, a condenser (7) placed into the ventilation duct (3), that heats the processing air dehumidified at the evaporator (6) and a pump (8) providing the condensate water to be discharged.
The laundry dryer (1) of the present invention comprises a drain channel (9) that extends between the evaporator (6) and the condenser (7) and that provides the condensate water coming from the evaporator (6) to be delivered to the pump (8) in order to be discharged and a guiding means (10) that extends from the condenser (7) towards the evaporator (6) by at least partially covering the drain channel (9), that prevents the air coming from the evaporator (6) from entering into the drain channel (9) and guides it to the condenser (7) and that prevents the condensate water coming from the evaporator (6) due to the effect of the processing air from entering into the condenser (7) and guides it to the drain channel (9).
In the drying process realized in the heat pump laundry dryer (1), the processing air humidified by passing over the laundry in the drum (2) is passed over the evaporator (6) and the condenser (7) in the ventilation duct (3). The evaporator (6) condenses and dehumidifies the processing air, and the condenser (7) heats the dehumidified processing air coming from the evaporator (6). The processing air coming from the evaporator (6) passes over the drain channel (9) located between the condenser (7) and the evaporator (6), and the guiding means (10) placed onto the drain channel (9) prevents the processing air from contacting the water accumulating in the drain channel (9) and provides it to be guided to the condenser (7) without being humidified. The guiding means (10), furthermore, prevents the droplets that condense in the evaporator (6), scattered towards the condenser (7) from the evaporator (6) due to the effect of the processing air, and that fall down through the gap between the evaporator (6) and the condenser (7) due to the effect of the gravity, from moving towards the condenser (7), and guides the water to the drain channel (9). The guiding means (10) separately guides the processing air and the condensate water coming from the evaporator (6), thus the heating efficiency is increased by preventing the condenser (7) from getting wet.
The laundry dryer (1), furthermore, comprises a conduit (11) arranged between the guiding means (10) and the evaporator (6), that provides the condensate water coming from the evaporator (6) and guided by the guiding means (10) to flow into the drain channel (9).
In an embodiment of the present invention, the guiding means (10) extends from the condenser (7) towards the evaporator (6), between the condenser (7) and the conduit (11) with a downwards inclination (Figure 1, Figure 2). Thus, the condensate water moving from the evaporator (6) towards the condenser (7) by passing over the conduit (11) without flowing downwards through the conduit (11) due to the effect of the processing air is provided to move backwards due to the effect of the guiding means (10) inclined in a direction opposite to the moving direction of the water and to flow from the conduit (11) into the drain channel (9).
In another embodiment of the present invention, the guiding means (10) is L-shaped, arranged in the ventilation duct (3), at the lower part of the condenser (7); and the parts of the guiding means (10) that are inclined, meaning the parts that guide the air and the water protrude outwards from the lower edges of the condenser (7) (Figure 3). The guiding means (10) serves as a supporting means that maintains the position of the condenser (7) in the ventilation duct (3).
In the laundry dryer (1) of the present invention, the guiding means (10) extending from the condenser (7) towards the evaporator (6) prevents the processing air coming from the evaporator (6) from contacting the water in the drain channel (9) thus from getting wet and guides it to the condenser (7), prevents the condensate water discharged from the evaporator (6) from moving towards the condenser (7) due to its downward inclined structure, thus preventing the condenser (7) from getting wet, and increases the processing-air-heating efficiency of the condenser (7).
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 disclosed by the claims of the present invention.

Claims (5)

  1. A laundry dryer (1) comprising a drum (2) wherein the laundry to be dried is placed, a ventilation duct (3) wherein the processing air cycle is realized, a fan (4) providing the circulation of the processing air, a compressor (5) providing the refrigerant cycle, an evaporator (6) placed into the ventilation duct (3), that condenses the humid processing air, a condenser (7) placed into the ventilation duct (3), that heats the processing air dehumidified at the evaporator (6) and a pump (8) providing the condensate water to be discharged,
    characterized in that
    - a drain channel (9) that extends between the evaporator (6) and the condenser (7) and that provides the condensate water coming from the evaporator (6) to be delivered to the pump (8) in order to be discharged and
    - a guiding means (10) that extends from the condenser (7) towards the evaporator (6) by at least partially covering the drain channel (9), that prevents the air coming from the evaporator (6) from entering into the drain channel (9) and guides it to the condenser (7) and that prevents the condensate water coming from the evaporator (6) from entering into the condenser (7) and guides it to the drain channel (9)
  2. A laundry dryer (1) as in Claim 1, characterized in that a conduit (11) that is arranged between the guiding means (10) and the evaporator (6) and that provides the condensate water coming from the evaporator (6) and guided by the guiding means (10) to flow into the drain channel (9).
  3. A laundry dryer (1) as in Claim 1 or 2, characterized in that the guiding means (10) that extends from the condenser (7) towards the evaporator (6) in a downwards inclination.
  4. A laundry dryer (1) as in any one of the above claims, characterized in that the guiding means (10) that extends between the condenser (7) and the conduit (11).
  5. A laundry dryer (1) as in any one of the above claims, characterized in that the guiding means (10) that is L-shaped, arranged in the ventilation duct (3), at the lower part of the condenser (7), of which the parts that guide the air and the water protrude outwards from the lower edges of the condenser (7).
PCT/EP2012/057209 2011-04-26 2012-04-19 Heat pump laundry dryer WO2012146533A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES12715399.7T ES2589809T3 (en) 2011-04-26 2012-04-19 Clothes dryer with heat pump
EP12715399.7A EP2702198B1 (en) 2011-04-26 2012-04-19 Heat pump laundry dryer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2011/04077A TR201104077A1 (en) 2011-04-26 2011-04-26 Laundry dryer with heat pump.
TRA2011/04077 2011-04-26

Publications (2)

Publication Number Publication Date
WO2012146533A2 true WO2012146533A2 (en) 2012-11-01
WO2012146533A3 WO2012146533A3 (en) 2014-02-20

Family

ID=45976950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/057209 WO2012146533A2 (en) 2011-04-26 2012-04-19 Heat pump laundry dryer

Country Status (4)

Country Link
EP (1) EP2702198B1 (en)
ES (1) ES2589809T3 (en)
TR (1) TR201104077A1 (en)
WO (1) WO2012146533A2 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015065299A1 (en) 2013-11-01 2015-05-07 Arcelik Anonim Sirketi A heat pump laundry dryer
CN104635693A (en) * 2015-01-04 2015-05-20 常州市武进区半导体照明应用技术研究院 Study method of environment control equipment and environment control equipment
WO2015082125A1 (en) 2013-12-03 2015-06-11 Arcelik Anonim Sirketi A heat pump dryer
EP3045582A1 (en) * 2015-01-13 2016-07-20 LG Electronics Inc. Drying machine
WO2016139229A1 (en) 2015-03-04 2016-09-09 Arcelik Anonim Sirketi A laundry dryer
WO2016173788A1 (en) 2015-04-28 2016-11-03 Arcelik Anonim Sirketi A laundry dryer
WO2016173787A1 (en) 2015-04-28 2016-11-03 Arcelik Anonim Sirketi A laundry dryer
US20170037562A1 (en) * 2015-08-04 2017-02-09 Lg Electronics Inc. Clothes treating apparatus
DE102015216433A1 (en) * 2015-08-27 2017-03-02 BSH Hausgeräte GmbH Household appliance with cleaning device for heat exchangers
WO2017174766A1 (en) 2016-04-08 2017-10-12 Arcelik Anonim Sirketi A heat pump laundry washing and/or drying machine
EP3835478A1 (en) 2019-12-12 2021-06-16 Arçelik Anonim Sirketi A laundry dryer

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JP2004240737A (en) 2003-02-06 2004-08-26 Konica Minolta Holdings Inc Print system
JP2006122466A (en) 2004-10-29 2006-05-18 Toshiba Corp Laundry washer/dryer
JP2009247600A (en) 2008-04-07 2009-10-29 Panasonic Corp Drying equipment

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JP4834342B2 (en) * 2005-07-26 2011-12-14 株式会社東芝 Drum type washer / dryer
JP4880982B2 (en) * 2005-11-18 2012-02-22 株式会社東芝 Washing and drying machine

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JP2004240737A (en) 2003-02-06 2004-08-26 Konica Minolta Holdings Inc Print system
JP2006122466A (en) 2004-10-29 2006-05-18 Toshiba Corp Laundry washer/dryer
JP2009247600A (en) 2008-04-07 2009-10-29 Panasonic Corp Drying equipment

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015065299A1 (en) 2013-11-01 2015-05-07 Arcelik Anonim Sirketi A heat pump laundry dryer
US10179967B2 (en) 2013-12-03 2019-01-15 Arcelik Anonim Sirketi Heat pump dryer
WO2015082125A1 (en) 2013-12-03 2015-06-11 Arcelik Anonim Sirketi A heat pump dryer
CN104635693A (en) * 2015-01-04 2015-05-20 常州市武进区半导体照明应用技术研究院 Study method of environment control equipment and environment control equipment
EP3045582A1 (en) * 2015-01-13 2016-07-20 LG Electronics Inc. Drying machine
US10386118B2 (en) 2015-01-13 2019-08-20 Lg Electronics Inc. Drying machine
WO2016139229A1 (en) 2015-03-04 2016-09-09 Arcelik Anonim Sirketi A laundry dryer
WO2016173788A1 (en) 2015-04-28 2016-11-03 Arcelik Anonim Sirketi A laundry dryer
WO2016173787A1 (en) 2015-04-28 2016-11-03 Arcelik Anonim Sirketi A laundry dryer
CN106436240A (en) * 2015-08-04 2017-02-22 Lg电子株式会社 Clothes treating apparatus
US10337137B2 (en) 2015-08-04 2019-07-02 Lg Electronics Inc. Clothes treating apparatus
US20170037562A1 (en) * 2015-08-04 2017-02-09 Lg Electronics Inc. Clothes treating apparatus
EP3770316A1 (en) * 2015-08-04 2021-01-27 LG Electronics Inc. -1- Clothes treating apparatus
US10982380B2 (en) 2015-08-04 2021-04-20 Lg Electronics Inc. Clothes treating apparatus
DE102015216433A1 (en) * 2015-08-27 2017-03-02 BSH Hausgeräte GmbH Household appliance with cleaning device for heat exchangers
WO2017174766A1 (en) 2016-04-08 2017-10-12 Arcelik Anonim Sirketi A heat pump laundry washing and/or drying machine
EP3835478A1 (en) 2019-12-12 2021-06-16 Arçelik Anonim Sirketi A laundry dryer

Also Published As

Publication number Publication date
EP2702198B1 (en) 2016-06-08
ES2589809T3 (en) 2016-11-16
EP2702198A2 (en) 2014-03-05
WO2012146533A3 (en) 2014-02-20
TR201104077A1 (en) 2012-11-21

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