EP2452009B1 - Wäschetrockner - Google Patents

Wäschetrockner Download PDF

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Publication number
EP2452009B1
EP2452009B1 EP10727743.6A EP10727743A EP2452009B1 EP 2452009 B1 EP2452009 B1 EP 2452009B1 EP 10727743 A EP10727743 A EP 10727743A EP 2452009 B1 EP2452009 B1 EP 2452009B1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
air passage
passage
cooling air
exchange layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10727743.6A
Other languages
English (en)
French (fr)
Other versions
EP2452009A1 (de
Inventor
Wenfeng Pang
Zhihua Yan
Weiyi Zhang
Shengchao Mao
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL10727743T priority Critical patent/PL2452009T3/pl
Publication of EP2452009A1 publication Critical patent/EP2452009A1/de
Application granted granted Critical
Publication of EP2452009B1 publication Critical patent/EP2452009B1/de
Not-in-force 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a clothes drying apparatus comprising: a machine drum, having a rotary drum for accommodating clothes therein, and a condensing device, a fan, and a heating passage, connected to the machine drum, wherein the condensing device comprises at least one drying air passage in communication with the air circulation passage and at least one cooling air passage in communication with outside air and respectively adjacent to the drying air passage, and a heat exchange layer is disposed in the cooling air passage.
  • a clothes drying apparatus of the generic type specified avbove is disclosed in European Patent Application No. EP 1 621 661 A2 .
  • An existing clothes drying apparatus such as a clothes drying machine and a clothes washing and drying machine integrating clothes washing and drying functions usually has the following drying process. Under the action of a heating device, dry air is heated into dry hot air in a heating pipe, enters a clothes treating drum to perform heat exchange with wet clothes and carry away moisture in the clothes to form relatively wet hot air, and then enters a condensing device through an outlet disposed on the clothes treating drum. Through condensation of the condensing device, the moisture in the relatively wet hot air is condensed into water, and then discharged through a drain pipe, and the condensed air becomes relatively dry cold air, is reintroduced into the heating pipe under the action of a fan, and heated to form dry hot air and enters the next cycle. The process is repeated until the drying procedure ends.
  • German Patent No. DE 37 38 031 C2 has disclosed a condensing device using air as the condensing medium.
  • the condensing device using air as the condensing medium generally has at least one drying air passage and at least one cooling air passage in communication with outside air and respectively adjacent to the drying air passage, and a heat exchange layer is disposed in the cooling air passage.
  • the relatively wet hot air discharged from the clothes treating drum flows through the drying air passage, and transfers heat to the heat exchange layer in the cooling air passage.
  • the outside air takes away the heat on the heat exchange layer, and then is discharged from the condensing device.
  • the wet hot air passing through the drying air passage is usually non-uniformly distributed, so that the heat distributed on the heat exchange layer is also non-uniform, and thus the heat exchange efficiency is affected.
  • the present invention is directed to an improved clothes drying apparatus, which includes a condensing device having uniform heat dissipation and excellent condensation effect.
  • a clothes drying apparatus comprising: a machine drum, having a rotary drum for accommodating clothes therein; and a condensing device, a fan, and a heating passage, connected to the machine drum.
  • the condensing device comprises at least one drying air passage in communication with the air circulation passage and at least one cooling air passage in communication with outside air and respectively adjacent to the drying air passage, and a heat exchange layer is disposed in the cooling air passage.
  • the condensing device, the fan, and the heating passage form an air circulation passage
  • the heat exchange layer in the at least one cooling air passage is at least divided into a first part and a second part, and a heat dissipation area of the first part is larger than that of the second part.
  • the heat exchange layer having regions of different heat dissipation areas, may be respectively corresponding to different circulating air flows, which achieves uniform heat distribution and dissipation effect and thus improves the condensation effect.
  • a division line is disposed between the first part and the second part, and the division line is approximately longitudinally distributed along the drying air passage.
  • the distribution manner is corresponding to airflow distribution in the air circulation passage.
  • a flow passing through a position corresponding to the first part of the heat exchange layer in the cooling air passage is larger than a flow passing through a position corresponding to the second part.
  • the condensing device includes a heat exchange passage assembly and a circulating air guiding device connected to the heat exchange passage assembly.
  • the circulating air guiding device includes an inlet connected to the machine drum and an outlet connected to the heat exchange passage assembly.
  • the inlet is near a first side of the cooling air passage, and is far from a second side of the cooling air passage.
  • the second part of the heat exchange layer in the cooling air passage is near the first side of the cooling air passage, and the first part of the heat exchange layer in the cooling air passage is near the second side of the cooling air passage.
  • the inlet of the circulating air guiding device is near the first side of the cooling air passage, when circulating air flows into the circulating air guiding device via its inlet and enters the drying air passage via its outlet, more air flows are distributed near the second side of the cooling air passage, and the temperature is high; while fewer air flows are distributed near the first side of the cooling air passage, and the temperature is low.
  • the above structure achieves uniform heat dissipation effect.
  • neatly arranged heat exchange fins are disposed on the second part of the heat exchange layer in the cooling air passage, and alternately arranged heat exchange fins are disposed on the first part.
  • the alternately arranged heat exchange fins have large resistance and variable airflow directions, so that the mobility thereof in all directions is good, the airflow distribution is more uniform, and the heat exchange area is large.
  • the neatly arranged heat exchange fins have small resistance and invariable airflow directions, so that the heat exchange area is small.
  • a clothes drying apparatus 10 includes a machine drum 12, and a motor-driven rotary drum 14 that is capable of rotating is disposed in the machine drum 12. Clothes to be treated are dried in the rotary drum 14.
  • the rotary drum 14 has many through holes (not shown) on a wall thereof, through which the rotary drum 14 and the machine drum 12 are in spatial communication with each other.
  • the machine drum 12 is connected to a condensing device 16, a fan 18, and a heating passage 20 in sequence, so as to form an air circulation passage 22.
  • An air flow for drying the clothes flows circularly in the air circulation passage 22 and carries away moisture in the clothes.
  • the work flow of the clothes drying apparatus 10 is as follows. Circulating air enters the rotary drum 14 after being heated by the heating passage 20, performs heat exchange with wet clothes therein to carry away moisture in the clothes, and forms relatively wet and hot air.
  • the wet and hot circulating air enters the condensing device 16 from the machine drum 12. Through condensation of the condensing device 16, the moisture in the relatively wet and hot circulating air is condensed into water, flows into the machine drum 12, and finally is discharged through a drainage system 24.
  • the condensed drying air is reintroduced into the heating passage 20 under the action of the fan 18, and enters the next cycle.
  • the condensing device 16 includes a cooling air inlet 34 and a cooling air outlet 36 in communication with the outside. Outside air is drawn by a blower 38 into the condensing device 16 through the cooling air inlet 34, performs heat exchange with the drying air passing through the condensing device 16 to carry away a part of heat of the drying air, and then is discharged through the cooling air outlet 36.
  • the condensing device 16 includes a drying air passage 2 and a cooling air passage 4 isolated by a partition wall 8.
  • the drying air passage 2 and the cooling air passage 4 are alternately distributed.
  • a heat exchange layer 6 formed by a plurality of heat exchange fins is disposed in the cooling air passage 4.
  • circulating air 3 transfers heat to the partition wall 8, and the partition wall 8 further transfers the heat to the heat exchange layer 6.
  • Cold air 5 passes through the heat exchange layer 6, and takes away most heat on the heat exchange layer 6, so as to cool the wet hot air 3.
  • the condensing device 16 includes a heat exchange passage assembly 40 and a circulating air guiding device 42 connected to the heat exchange passage assembly 40.
  • the circulating air guiding device 42 includes an inlet 44 connected to the machine drum 12 and an outlet 46 connected to the heat exchange passage assembly 40.
  • the inlet 44 is near a first side 48 of the cooling air passage 4, and is far from a second side 50 of the cooling air passage 4. Therefore, when the circulating air 3 flows into the circulating air guiding device 42 via the inlet 44 and enters the drying air passage 2 via its outlet 46, more air flows are distributed near the second side 50 of the cooling air passage 4, and the temperature is high; while fewer air flows are distributed near the first side 48 of the cooling air passage 4, and the temperature is low.
  • the heat exchange layer 6 in the cooling air passage 4 is divided into a first part 54 and a second part 56 along a division line 52, and a heat dissipation area of the first part 54 is larger than that of the second part 56.
  • the division line 52 is approximately longitudinally distributed along the drying air passage 2
  • the second part 56 is near the first side 48 of the cooling air passage 4
  • the first part 54 is near the second side 50 of the cooling air passage 4.
  • the distribution of the circulating air 3 in the drying air passage 2 also changes.
  • the distribution form and proportion of the first part 54 and the second part 56 of the heat exchange layer 6 are designed according to specific distribution of the circulating air 3 in the drying air passage 2. For example, if the inlet 44 of the circulating air guiding device 42 is located at the bottom near a center of the drying air passage 2, a flow of the circulating air 3 distributed in the center of the drying air passage 2 is larger; therefore, the part with a larger heat dissipation area of the heat exchange layer 6 should be distributed in the center, while the part with a smaller heat dissipation area should be distributed at both sides.
  • neatly (as in even or straight) arranged heat exchange fins 58 are disposed on the second part 56 of the heat exchange layer 6 in the cooling air passage 4, and alternately arranged heat exchange fins 58 are disposed on the first part 54.
  • the heat exchange fins 58 are made of heat conducting materials, and had better have regular spatial shapes, so that air can easily flow in one direction.
  • the alternately arranged heat exchange fins 58 have large resistance and variable airflow directions, so that the mobility thereof in all directions is good, the airflow distribution is more uniform, and the heat exchange area is large.
  • the neatly arranged heat exchange fins 58 have small resistance and invariable airflow directions, so that the heat exchange area is small.
  • the heat exchange layer 6 may have many other specific embodiments.
  • the first part 54 of the heat exchange layer 6 has a larger contact area with air than the second part 56 per unit volume, such as the heat exchange fins are folded more densely, or heat exchange wires are used in the first part 54.

Landscapes

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

Claims (6)

  1. Wäschetrockner (10), umfassend:
    eine Maschinentrommel (12) mit einer Drehtrommel (14) zum Aufnehmen von Kleidung darin;
    und
    eine Kondensiervorrichtung (16), ein Gebläse (18) und einen Heizkanal (20), der mit der Maschinentrommel (12) verbunden ist,
    wobei die Kondensiervorrichtung (16) mindestens einen Trocknungsluftkanal (2) umfasst, der mit einem Luftzirkulationskanal (22) kommuniziert, und mindestens einen Kühlluftkanal (4), der mit der Außenluft kommuniziert und entsprechend benachbart zu dem Trocknungsluftkanal (2) angeordnet ist, und eine Wärmetauscherschicht (6), die in dem Kühlluftkanal (4) angeordnet ist,
    dadurch gekennzeichnet, dass:
    die Kondensiervorrichtung (16), das Gebläse (18) und der Heizkanal (20) den Luftzirkulationskanal (22) bilden, und dadurch, dass
    die Wärmetauscherschicht (6) in dem mindestens einen Kühlluftkanal (4) mindestens in einen ersten Teil (54) und einen zweiten Teil (56) aufgeteilt ist, und ein Wärmeableitungsbereich des ersten Teils (54) größer als der des zweiten Teils (56) ist.
  2. Wäschetrockner (10) nach Anspruch 1, wobei eine Trennlinie (52) zwischen dem ersten Teil (54) und dem zweiten Teil (56) angeordnet ist, und wobei die Trennlinie (52) etwa längs entlang des Trocknungsluftkanals (2) verteilt ist.
  3. Wäschetrockner (10) nach Anspruch 1 oder 2, wobei, wenn zirkulierende Luft (3) in dem Luftzirkulationskanal (22) den Trocknungsluftkanal (2) durchläuft, eine Strömung, die durch eine dem ersten Teil (54) der Wärmetauscherschicht (6) im Kühlluftkanal (4) entsprechenden Position durchläuft, größer ist, als eine Strömung, die durch eine dem zweiten Teil (56) entsprechenden Position durchläuft.
  4. Wäschetrockner (10) nach Anspruch 3, wobei die Kondensiervorrichtung (16) eine Wärmetauscherkanalanordnung (40) und eine Zirkulationsluft-Führungsvorrichtung (42) umfasst, die mit der Wärmetauscherkanalanordnung (40) verbunden ist, wobei die Zirkulationsluft-Führungsvorrichtung (42) einen Einlass (44) umfasst, der mit der Maschinentrommel (12) verbunden ist, und einen Auslass (46), der mit der Wärmetauscherkanalanordnung (40) verbunden ist,
    wobei der Einlass (44) in der Nähe einer ersten Seite (48) des Kühlluftkanals (4) und entfernt von einer zweiten Seite (50) des Kühlluftkanals (4) angeordnet ist,
    wobei der zweite Teil (56) der Wärmetauscherschicht (6) in dem Kühlluftkanal (4) in der Nähe der ersten Seite (48) des Kühlluftkanals (4) angeordnet ist, und
    wobei der erste Teil (54) der Wärmetauscherschicht (6) in dem Kühlluftkanal (4) in der Nähe der zweiten Seite (50) des Kühlluftkanals (4) angeordnet ist.
  5. Wäschetrockner (10) nach Anspruch 4, wobei der erste Teil (54) der Wärmetauscherschicht (6) in dem Kühlluftkanal (4) etwa 3/5 des Gesamtbereichs der Wärmetauscherschicht (6) einnimmt und der zweite Teil (56) etwa 2/5 des Gesamtbereichs der Wärmetauscherschicht (6) einnimmt.
  6. Wäschetrockner (10) nach Anspruch 3, wobei präzise angeordnete Wärmetauscherrippen (58) in dem zweiten Teil (56) der Wärmetauscherschicht (6) in dem Kühlluftkanal (4) angeordnet sind und abwechselnd angeordnete Wärmetauscherrippen (58) in dem ersten Teil (54) angeordnet sind.
EP10727743.6A 2009-07-06 2010-07-01 Wäschetrockner Not-in-force EP2452009B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10727743T PL2452009T3 (pl) 2009-07-06 2010-07-01 Urządzenie do suszenia odzieży

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2009200469875U CN201433319Y (zh) 2009-07-06 2009-07-06 衣物烘干设备
PCT/EP2010/059331 WO2011003795A1 (en) 2009-07-06 2010-07-01 Clothes drying apparatus

Publications (2)

Publication Number Publication Date
EP2452009A1 EP2452009A1 (de) 2012-05-16
EP2452009B1 true EP2452009B1 (de) 2014-09-10

Family

ID=42052129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10727743.6A Not-in-force EP2452009B1 (de) 2009-07-06 2010-07-01 Wäschetrockner

Country Status (4)

Country Link
EP (1) EP2452009B1 (de)
CN (1) CN201433319Y (de)
PL (1) PL2452009T3 (de)
WO (1) WO2011003795A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102477687A (zh) * 2010-11-26 2012-05-30 博西华电器（江苏）有限公司 衣物烘干设备
WO2014094333A1 (zh) * 2012-12-21 2014-06-26 无锡小天鹅股份有限公司 干衣机
CN103486876B (zh) * 2013-06-21 2016-01-13 无锡小天鹅股份有限公司 换热装置及其干衣机或洗干一体机
CN104911882B (zh) 2014-03-14 2018-10-30 青岛海尔滚筒洗衣机有限公司 一种干衣机或洗干一体机
CN104911881B (zh) * 2014-03-14 2019-01-22 青岛海尔滚筒洗衣机有限公司 一种空气冷凝结构
CN105780424A (zh) * 2014-12-17 2016-07-20 无锡小天鹅股份有限公司 干衣机及其换热装置
CN107447458B8 (zh) 2016-07-21 2022-08-16 博西华电器（江苏）有限公司 冷凝式干衣机
US11891749B2 (en) * 2020-11-23 2024-02-06 Whirlpool Corporation Under-cabinet seal to prevent exhaust recirculation for a condensing appliance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100459136B1 (ko) * 2002-08-21 2004-12-03 엘지전자 주식회사 응축식 의류건조기용 응축기의 냉각핀 배열구조
JP2006026407A (ja) * 2004-07-20 2006-02-02 Samsung Electronics Co Ltd ドラム洗濯機
KR101235193B1 (ko) * 2005-06-13 2013-02-20 삼성전자주식회사 세탁기 및 그 제어방법

Also Published As

Publication number Publication date
WO2011003795A1 (en) 2011-01-13
CN201433319Y (zh) 2010-03-31
PL2452009T3 (pl) 2015-04-30
EP2452009A1 (de) 2012-05-16

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