EP2576888A1 - Thermoelektrischer wärmepumpenwäschetrockner - Google Patents

Thermoelektrischer wärmepumpenwäschetrockner

Info

Publication number
EP2576888A1
EP2576888A1 EP11723080.5A EP11723080A EP2576888A1 EP 2576888 A1 EP2576888 A1 EP 2576888A1 EP 11723080 A EP11723080 A EP 11723080A EP 2576888 A1 EP2576888 A1 EP 2576888A1
Authority
EP
European Patent Office
Prior art keywords
drying duct
process air
inlet opening
hot side
drying
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.)
Granted
Application number
EP11723080.5A
Other languages
English (en)
French (fr)
Other versions
EP2576888B1 (de
Inventor
Yavuz Sahin
Mehmet Kaya
Onur Hartoka
Serdar Kocaturk
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 AS filed Critical Arcelik AS
Publication of EP2576888A1 publication Critical patent/EP2576888A1/de
Application granted granted Critical
Publication of EP2576888B1 publication Critical patent/EP2576888B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 laundry dryer comprising a thermoelectric heat pump.
  • the drying air activated by a fan removes the moisture of the laundry by being passed over the laundry and the water vapor in the air is condensed at the condenser.
  • the drying air dehumidified at the condenser is later heated by being passed over the heater thus delivering hot and dry air unto the laundry.
  • laundry dryers generally air cooled type condensers are used. The air sucked by means of the cooling fan from the outer environment is delivered to the condenser and thus the drying air passing through the condenser is provided to be condensed by cooling.
  • furthermore thermoelectric heat pumps are used in laundry dryers in addition to the condenser and the heater.
  • thermoelectric heat pumps are also named as Peltier elements.
  • the thermoelectric heat pumps have hot and cold sides and perform both the functions of condensing by cooling and also heating the drying air. While the hot side of the thermoelectric heat pumps used in laundry dryers assists the heater, the cold side assists the condenser. In the process of drying the laundry, the drying air is cooled by some amount while being passed over the condenser, afterwards is passed over the thermoelectric heat pump and thereby the dehumidification process of the drying air is accomplished in two stages. Similarly, the heating process is also in two stages.
  • the drying air which is almost completely dehumidified of the moisture contained therein by passing through the condenser and the cold side of the thermoelectric heat pump, is heated some amount by being passed over the hot side of the thermoelectric heat pump and afterwards the heating process is completed by the drying air being passed over the main heater.
  • the problem of pressure loss arises due to the numerous paths and turns wherein the drying air circulates.
  • the pressure of the drying air decreases while passing particularly from the heat sinks which provide heat transfer in the hot and cold sides of the thermoelectric heat pump and the volumetric flow and hence the speed of the drying air which is activated and delivered unto the laundry by the drying fan, decreases and the efficiency of drying is lowered.
  • thermoelectric heat pump decreases the operational efficiency thereof.
  • heat emission from the hot side to the outside becomes weaker.
  • Decrease in the effectiveness of the thermoelectric heat pump hot side also results in decrease in the effectiveness of the cold side and hence the condensation efficiency is lowered.
  • a Peltier element is disposed in the gap between two heat sinks.
  • the sealing element is arranged between the Peltier element and the heat sinks.
  • thermoelectric heat pump In the German Patent Application No. DE102006016294, a laundry dryer comprising thermoelectric heat pump is explained.
  • the drying process air is directed from the cold side of the thermoelectric heat pump to the hot side by means of an air guidance device.
  • the drying air leaving the drum in a laundry dryer enters the condenser after passing from the cold surface of the Peltier element and the air leaving the condenser is delivered to the drum after passing from the hot surface of the Peltier element and the heater.
  • the aim of the present invention is the realization of a laundry dryer which comprises the thermoelectric heat pump and wherein the pressure losses that occur in the drying cycle are decreased.
  • 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 thermoelectric heat pump (Peltier) having a hot side and a cold side, some portion of the process air activated by the fan continues its path in the drying duct after leaving the drum, passing from the condenser, the hot side, the cold side and the heater respectively and is delivered again to the drum in dehumidified and heated state.
  • the other portion of the drying air is guided directly to the hot side of the thermoelectric heat pump by means of a divider disposed in the drying duct, without circulating through the condenser and the cold side of the thermoelectric heat pump and is again delivered to the drum over the main heater.
  • the end of the divider extending into the drying duct is in the form of a plate that extends in the reverse direction of the process air flow and vertically upwards in the drying duct.
  • the end of the divider extending to the inlet opening of the hot side is in the form of a plate that bears against the sides of the inlet opening by extending in the horizontal direction to almost the center of the inlet opening.
  • a filter that extends into the second drying duct is integrated with the divider so as to form a barrier in front of the process air flow.
  • thermoelectric heat pump In the laundry dryer of the present invention, pressure losses are decreased by means of the divider, the effectiveness of both the hot side and the cold side of the thermoelectric heat pump are increased.
  • Figure 1 – is the schematic view of a laundry dryer.
  • Figure 2 – is the schematic view of the drying duct, the condenser, the thermoelectric heat pump and the divider disposed in a laundry dryer.
  • the laundry dryer (1) comprises a body, a drum (2) wherein the laundry is placed, a drying duct (3) wherein the process air is circulated, a fan (4) providing the circulation of process air in the drying duct (3), a heater (5) that heats the process air, a condenser (6) providing the dehumidification of the process air and a thermoelectric heat pump (7) disposed after the condenser (6) in the drying duct (3), that condenses by cooling and afterwards heats the process air passing thereover.
  • thermoelectric heat pump (7) comprises a cold side (8) that condenses the process air passing thereover by cooling, a hot side (9) that heats the process air passing thereover and an inlet opening (10) placed at the hot side (9) that provides entry of the process air into the hot side (9).
  • the laundry dryer (1) of the present invention comprises a divider (11) that,
  • thermoelectric heat pump (7) is positioned horizontally inside the body of the laundry dryer (1), the cold side (8) is situated below, and the hot side (9) above, and the condenser (6) is situated under the cold side (8), at the lowermost place inside the body of the laundry dryer (1).
  • the said elements are arranged one above the other from the drum (2) towards the base as the hot side (9) – the cold side (8) – the condenser (6).
  • the divider (11) guides some portion of the process air leaving the drum (2) and flowing in the drying duct (3) to the first drying duct (3’), the other portion to the second drying duct (3’’).
  • the first drying duct (3’) functions as the bypass duct for some portion of the process air, the process air flowing in the first drying duct (3’) is delivered directly to the hot side (9) of the thermoelectric heat pump (7) by being passed from the upper inlet opening (10’), without circulating the condenser (6) and the cold side (8), the process air leaving the hot side (9) is again delivered to the drum (2) by being passed over the heater (5).
  • the process air flowing in the second drying duct (3’) is delivered to the hot side (9) of the thermoelectric heat pump (7) by being passed through the lower inlet opening (10’’) after circulating the condenser (6) and the cold side (8), mixes with the process air entering the hot side (9) from the upper inlet opening (10’) and enters the drum (2) again by passing from the heater (5).
  • the divider (11) provides at least some portion of the process air to be delivered directly to the hot side (9) by being passed through the first drying duct (3’) without losing pressure and without circulating the condenser (6) and the cold side (8) and from there to be delivered to the drum (2) again over the heater (5).
  • the divider (11) provides the process air flowing through the first drying duct (3’) and the second drying duct (3’’) to enter the hot side (9) from the upper and lower inlet openings (10’, 10’’) by dividing the inlet opening (10) on the hot side (9) of the thermoelectric heat pump (7) into two and the hot air coming from both of the drying ducts (3’, 3’’) continues flowing onward by uniting at the hot side (9).
  • the volumetric flow of the process air is increased, pressure losses are minimized and the thermoelectric heat pump (7) is provided to operate more effectively.
  • the end of the divider (11) inside the drying duct (3) is in the form of a plate that extends into the drying duct (3) vertically and in the reverse direction of the process air flow ( Figure 2).
  • the end of the divider (11) on the side of the inlet opening (10), is in the form of a plate that bears against the sides of the inlet opening (10) by extending in the horizontal direction to almost the center of the inlet opening (10) ( Figure 2).
  • the laundry dryer (1) comprises a filter (12) integrated with the divider (11) and disposed in the second drying duct (3’’) so as to form a barrier in front of the process air ( Figure 1).
  • the filter (12) only filters the process air flowing in the second drying duct (3''), the air flowing in the first drying duct (3') does not lose pressure since it is not filtered.
  • the filter (12) since being integrated with the divider (11), can be cleaned by being taken out of the laundry dryer (1) together with the divider (11) easily.
  • the effectiveness of the thermoelectric heat pump (7) is increased by increasing volumetric flow of the process air passing from the hot side (9) of the thermoelectric heat pump (7) by means of the divider (11) and the pressure losses of the process air are decreased. Furthermore, the condensation effectiveness of the cold side (8) is increased by decreasing the volumetric flow of the process air passing from the cold side (8) of the thermoelectric heat pump (7).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
EP11723080.5A 2010-06-07 2011-06-06 Wäschetrockner mit thermoelektrischer wärmepumpe Not-in-force EP2576888B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201004566 2010-06-07
PCT/EP2011/059249 WO2011154336A1 (en) 2010-06-07 2011-06-06 A thermoelectric heat pump laundry dryer

Publications (2)

Publication Number Publication Date
EP2576888A1 true EP2576888A1 (de) 2013-04-10
EP2576888B1 EP2576888B1 (de) 2014-03-19

Family

ID=44626671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11723080.5A Not-in-force EP2576888B1 (de) 2010-06-07 2011-06-06 Wäschetrockner mit thermoelektrischer wärmepumpe

Country Status (3)

Country Link
EP (1) EP2576888B1 (de)
CN (1) CN102918198B (de)
WO (1) WO2011154336A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015136393A1 (en) 2014-03-11 2015-09-17 Water-Gen Ltd. Closed-cycle condenser dryer with heat regeneration
US10907297B2 (en) 2013-03-15 2021-02-02 Watergen Ltd. Closed cycle condenser dryer with heat regeneration

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2658429B1 (de) * 2010-12-27 2016-08-10 Arçelik Anonim Sirketi Geschirrspülmaschine mit thermoelektrischem modul
DE102011081940A1 (de) * 2011-09-01 2013-03-07 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit einem Kreuzstromwärmetauscher und Verfahren zu seinem Betrieb
WO2013182405A2 (en) * 2012-06-05 2013-12-12 Arcelik Anonim Sirketi Laundry dryer with air-cooled condenser
WO2014180696A1 (en) 2013-05-09 2014-11-13 Arcelik Anonim Sirketi A thermoelectric heat pump laundry dryer
EP2990517B1 (de) * 2014-08-29 2017-03-08 Electrolux Appliances Aktiebolag Wäschetrockner mit Wärmepumpenanlage
EP2990522B1 (de) * 2014-08-29 2017-03-08 Electrolux Appliances Aktiebolag Wärmepumpenwäschetrockner
EP3075898B1 (de) * 2015-03-30 2018-06-20 LG Electronics Inc. Wäschebehandlungsvorrichtung
KR101694158B1 (ko) * 2015-05-11 2017-01-09 엘지전자 주식회사 세탁물 처리장치
CN105937160A (zh) * 2016-05-31 2016-09-14 无锡小天鹅股份有限公司 干衣机或洗干一体机
EP4086382B1 (de) * 2019-12-30 2024-10-16 Qingdao Haier Washing Machine Co., Ltd. Wäschetrockner
CN113047016A (zh) * 2021-03-22 2021-06-29 Tcl家用电器（合肥）有限公司 一种热泵干衣机、控制系统及控制方法

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DE3446468A1 (de) * 1984-12-20 1986-07-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und vorrichtung zum trocknen von waesche
JPH0857194A (ja) * 1994-08-26 1996-03-05 Matsushita Electric Ind Co Ltd 除湿型電気衣類乾燥機
DE20101641U1 (de) 2001-01-29 2002-06-06 AKG-Thermotechnik GmbH & Co. KG, 34369 Hofgeismar Kondensations-Wäschetrockner und dafür geeigneter Kondensations-Wärmeaustauscher
DE102005058285A1 (de) * 2005-12-06 2007-06-14 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zum Trocknen von Waschgut
DE102006003816A1 (de) * 2006-01-26 2007-08-02 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einer thermoelektrischen Wärmepumpe
DE102006005810A1 (de) 2006-02-08 2007-08-16 BSH Bosch und Siemens Hausgeräte GmbH Dichtungsvorrichtung für eine Wärmetauscheranordnung
DE102006016294A1 (de) 2006-04-06 2007-10-11 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Pflege von Wäschestücken
DE102006026251A1 (de) * 2006-06-06 2007-12-13 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zum Trocknen von Waschgut
JP2008136612A (ja) * 2006-11-30 2008-06-19 Sanyo Electric Co Ltd 乾燥機及び洗濯乾燥機
CN101568681B (zh) * 2006-12-25 2011-08-17 阿塞里克股份有限公司 洗衣机/烘干机

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10907297B2 (en) 2013-03-15 2021-02-02 Watergen Ltd. Closed cycle condenser dryer with heat regeneration
US11592194B2 (en) 2013-03-15 2023-02-28 Watergen Ltd. Planar element for forming heat exchanger
WO2015136393A1 (en) 2014-03-11 2015-09-17 Water-Gen Ltd. Closed-cycle condenser dryer with heat regeneration

Also Published As

Publication number Publication date
EP2576888B1 (de) 2014-03-19
CN102918198B (zh) 2015-12-16
WO2011154336A1 (en) 2011-12-15
CN102918198A (zh) 2013-02-06

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