EP2169107B1 - Sêchoir avec un dispositif de diffusion - Google Patents

Sêchoir avec un dispositif de diffusion Download PDF

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Publication number
EP2169107B1
EP2169107B1 EP09171401.4A EP09171401A EP2169107B1 EP 2169107 B1 EP2169107 B1 EP 2169107B1 EP 09171401 A EP09171401 A EP 09171401A EP 2169107 B1 EP2169107 B1 EP 2169107B1
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EP
European Patent Office
Prior art keywords
spraying
air
channel
drying appliance
appliance according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09171401.4A
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German (de)
English (en)
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EP2169107A1 (fr
Inventor
Jie Gao
Jihao Li
Yanglei Zhu
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
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Publication of EP2169107A1 publication Critical patent/EP2169107A1/fr
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Publication of EP2169107B1 publication Critical patent/EP2169107B1/fr
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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 an improved drying appliance, such as a dryer or a washer-dryer, and in particular to a drying appliance, comprising: a drum, a condensing device, a spraying device associated with the condensing device, said spraying device having a water inlet and an end portion, a drying channel for introducing processing air into the drum, wherein the spraying device has a spraying head which is provided on the end portion thereof; and wherein said spraying head is in the form of a cup, and has plurality of spraying holes.
  • drying appliance is disclosed in EP 1 524 361 A1 .
  • That known drying appliance is a washer-dryer devised both for washing and drying laundry and its condensing device is a simple vertical channel with the spraying device located at its top end.
  • the spraying device injects water which traverses the condensing device from top to bottom, thereby providing a cooling effect on humid process air flowing through the channel from bottom to top and condensing humidity from the process air.
  • DE 10 2006 018 469 A1 discloses a drying appliance having a heat pump which includes two heat exchangers, one for heating and one for cooling process air, and a spraying device for use to immerse the heat exchangers in water in order to assist in starting the heat pump. As a side effect, some cleaning is attained for the heat exchangers by removing fluff by the immersing water.
  • a drying appliance such as dryer or washer-dryer for use as a household appliance, has the following drying process: After being heated by a heating device, dry processing air is heated within a heating channel, and is driven into a drum wherein heat is exchanged between the heated processing air and the wet fabric to evaporate moisture from the fabric into the processing air, such that the processing air carries moisture from the fabric and moves into the condensing device through an exit which is formed on the drum. Condensed by the condensing device, the moisture of the processing air is turned to water, and the processing air becomes relatively dry and cool. The condensed processing air is then driven by a fan to a heating channel and heated again to enter the drum in a next drying cycle.
  • fluff which is dust-like fragments of textile fibers is always produced and carried by the moist processing air into the condensing assembly, and then is adhered on inner walls of the condensing device, which influences effect of condensing or blocks up the processing air. And also, fluff may even be driven into the fan and the heating device, which may cause dangers.
  • a spraying device to clean the condensing device and possibly other parts of the drying device by water spray may be provided.
  • Some drawbacks are commonly existent in the spraying devices of prior art, which are: the effective area that is cleaned by the water spray is extremely limited; water pressure is dispersed, and force of flushing is not big enough, and so on.
  • EP 0 636 732 A1 disclosed a presently known spraying device uses spraying water, which is splashed from a certain baffle, to wash off fluff from the condensing device. With such structure, potential energy of the water is somewhat consumed when it hits the baffle, so the force of flushing is weakened. And under most conditions, a spraying device only has one spraying hole, or otherwise has several spread distributed spraying holes, and thus the flushing area is extremely limited, or the water pressure is dispersed, which also decrease effect of condensing.
  • condensing devices there are several sorts of condensing devices, one of which uses water and others use other coolant, such as air, for condensation.
  • a condensing device of other coolant is preferred for saving water, but meanwhile has much more problems with the fluff, which will be described in detail hereinafter.
  • the spraying water of a water-condensing device will carry a portion of fluff in the processing air, and also will flush at least a portion of the inner walls of the condensing device.
  • An air-condensing device usually imports fresh air from outside of the drying appliance. The fresh air will then cool down the processing air within the condensing device, and subsequently flows out of the drying appliance.
  • the condensing device usually has several processing air channels, which usually have elongate section such as to make the processing air be well cooled. So it is quite difficult to completely wash each processing air channel.
  • DE 37 38 031 C1 discloses such a known spraying device for the air-condensing device: the spraying device has a water inlet tube and a series of spraying heads distributed along a line towards the flowing direction of the water. And each of the spraying head associates with a processing air channel. Each spraying head has only one spraying direction, such that the effective area is relatively small.
  • the disadvantages of the system as set forth above are: Firstly, the spraying heads are aligned in a line, such that the water pressure is dispersed and unsymmetrical, and the flush force of the spraying water is relatively small and unsymmetrical.
  • the spraying heads only wash the processing air channels, such that the processing air inlet channel and outlet channel which are connected to the condensing device can not be washed; and also, each spraying head only has one spraying hole, and the effective area is relatively small, such that the processing air channels can not be fully washed.
  • An object of the present invention is to provide an improved drying appliance, which overcomes the foregoing drawbacks of the prior art, and has more reliable effect of flushing off fluff.
  • a drying appliance such as a dryer or a washer-dryer
  • a drying appliance which comprises a drum, a condensing device, a spraying device associated with the condensing device, said spraying device having a water inlet and an end portion, a drying channel for introducing processing air into the drum, wherein the spraying device has a spraying head which is provided on the end portion thereof; and wherein said spraying head is in the form of a cup, and has plurality of spraying holes, and wherein said condensing device has at least one processing air channel and at least one cooling air channel arranged in heat-exchanging relation to each other.
  • the spraying head is provided on the end portion of the spraying device, the water pressure is thereby concentrated, and because of the cup-shaped form of the spraying head, waste of potential energy is minimized, such that the flushing force is relatively large, and the spraying area is relatively large, which is good for flushing off fluff and good for condensing as well.
  • said condensing device has at least one processing air channel and at least one cooling air channel arranged in heat-exchanging relation to each other, such that water is saved for condensing, and good spraying device is especially need for such kind of condensing device.
  • the spraying holes oriented in different directions. So the effective flushing area is relatively large.
  • the spraying head has an axis, around which the spraying holes are distributed. Therefore, the water pressure is relatively symmetrical, and also enlarges the effective flushing area.
  • a respective wedge-shaped splitter disposed between each two spraying holes. Therefore, water is smoothly guided into the spraying holes.
  • the wedge-shaped splitters connected with each other at bottom ends thereof, and have knife-edges joining at a central point such as to form wedge-shaped slots radially distributed and beginning from the point, wherein the wedge-shaped slots form a portion of the spraying holes. Therefore, the water comes from the water inlet tube will not be blocked by any surface; instead, it will be well guided to the slots smoothly.
  • the spraying head has a round wall on which the spraying holes are formed. Since the spraying holes are formed on a round wall, they are three-dimensionally disposed, and the water ejected from the spraying holes has relatively big work area.
  • the at least one processing air channel comprising two ends respectively connected to an air-inlet channel and an air-outlet channel
  • said spraying device is mounted on one of the air-inlet channel and the air-outlet channel. Therefore, the air-inlet channel and the air-outlet channel can also be washed from fluff.
  • said at least one processing air channel is substantially vertically disposed, and the spraying device is disposed there above in relation to a direction of gravity. Therefore, water drops from the spraying device and onto the processing air channel. Because of the gravity, the water has more reliable flushing force.
  • the spraying device is mounted on a topmost portion of the one of the air-inlet channel and the air-outlet channel. Therefore, the air-inlet channel or air-outlet channel on which the spraying device is mounted can be fully cleaned.
  • said axis of the spraying head aligned with a central portion of said at least one processing air channel. Therefore, water from the spraying device is symmetrically spread.
  • the spraying head is disposed below the water inlet tube, such that energy of the water flow is increased when it drops from the water inlet tube to the spraying head, and thus the water spray has relatively big flushing force.
  • the spraying device has an interior that is connected to an outside of the drying appliance by an air-guiding connection, and includes a water line projecting through the interior and has an opening within the interior.
  • the inventive drying appliance is embodied in a household appliance, in particular in a laundry dryer or a washer/dryer.
  • the present invention is applicable for drying appliance having either an air-cooled or water-cooled condenser, or even having a condenser cooled by any coolant, while in the embodiments which will are described hereinbelow, an air-cooled condenser is used as an example.
  • a drying appliance 1 is under drying process.
  • dry processing air 3 is heated by a heating device 2 within a heating channel 4, and is driven into a drum 5 whereat heat exchanged between the heated processing air 3 and wet fabric, such that the processing air 3 carries moisture from the fabric and moves into the condensing device 7 through a condensing air-inlet channel 6.
  • Condensed by the condensing device 7, the moisture of the processing air 3 is turned to water, and the processing air 3 becomes relatively dry and cool.
  • the condensed processing air 3 is then driven by a first fan 8 through a condensing air-outlet channel 9 to the heating channel 4 to enter a next dying cycle.
  • the condensing device 7 is connected to the condensing air-inlet channel 6 and the condensing air-outlet channel 9 at its two ends, and has at least one processing air channel 11 and at least one cooling air channel 12 which are arranged in heat-exchanging relation to each other.
  • the at least one processing air channel 11 is substantially perpendicular to a bottom surface 14 of a housing 13 of the drying appliance 1.
  • a spraying device 10 is mounted on the condensing air-outlet channel 9, and is above the condensing device 7 in relation to a direction of gravity.
  • the processing air channel 11 may be inclined or parallel to the bottom surface 14.
  • the spraying device 10 may be mounted on the condensing air-inlet channel 6.
  • Fresh cooling air 15 from outside of the housing 13 is driven by a second fan 16 into a cooling air inlet channel 17, and subsequently into the cooling air channel 12 whereat heat exchanged between the cooling air 15 and the processing air 3 which is in the processing air channel 11. Then the processing air 3 is cooled down, and the cooling air 15 is discharged out of the housing 13 through a cooling air outlet channel 18.
  • the spraying device 10 comprises a water inlet tube 19 and an end portion 33.
  • a spraying head 20 is disposed on the end portion 33.
  • a guiding device 21 disposed between the water inlet tube 19 and the spraying head 20 for guiding the water from the water inlet tube 19 to the spraying head 20.
  • the guiding device 21 may connected with the water inlet tube 19 such as to form a portion of the water inlet tube 19.
  • the spraying head 20 is in the form of a cup, at the end of which a semi-spherical wall 22 is formed. Pluralities of spraying holes 23 with different directions are formed on the semi-spherical wall 22.
  • the spraying holes 23 are radially distributed around a central axis 24 of the spraying head 20.
  • the spraying head 20 may have other cup shape.
  • cup shape can be defined as a tridimensional component which has a continuously connected bottom and side wall, and an opening opens at one end.
  • the cup shape may also have other appropriate definition.
  • the spraying head 20 may also be tapered, columned, or has other shape of curved wall or prismatic walls.
  • the spraying holes 23 may have other form of distributing, for instance, distributed axially and radially at the same time with multiple layers.
  • the spraying device 10 has an interior 30 that is connected to outside of the drying appliance 1 by an air-guiding connection 31, and includes a water line defined by the water inlet tube 19 and the guiding device 21 projecting through the interior 30 and has an opening 32 within the interior 30.
  • wedge-shaped splitters 25 are formed between each two spraying holes 23.
  • the wedge-shaped splitters 25 connected with each other at bottom ends thereof, and have knife-edges 26 join at a central point 27 such as to form wedge-shaped slots 28 radially distributed and beginning from the point 27.
  • the wedge-shaped slots 28 form a portion of the spraying holes 23.
  • the point 27 is on the central axis 24 of the spraying head 20. Because of the structure, the water is divided by the knife-edges 26 when it flows to the bottom of the spraying head 20, and is guided to the spraying holes 23 smoothly.
  • the axis 24 of the spraying head 20 aligned with a central portion 29 of the at least one processing air channel 11.
  • the spraying device 10 is preferably mounted on a topmost portion of the condensing air-outlet channel 9. Therefore the condensing air-outlet channel 9 can be fully cleaned. It is especially useful for top wall of the condensing air-outlet channel 9 where usually adhered with most fluff and is difficult to be cleaned.
  • the spraying device 10 is preferably mounted on a topmost portion of the condensing air-inlet channel 6.

Landscapes

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

Claims (12)

  1. Séchoir comprenant un tambour (5), un dispositif de condensation (7), un dispositif de pulvérisation (10) lié au dispositif de condensation (7), ledit dispositif de pulvérisation (10) possédant une alimentation en eau (19) et une partie terminale (33), un canal de séchage (4) pour l'introduction d'air de processus dans le tambour (5), dans lequel le dispositif de pulvérisation (10) possède une tête de pulvérisation (20) située sur sa partie terminale (33) et dans lequel ladite tête de pulvérisation (20) a la forme d'une cuvette et possède une pluralité d'orifices de pulvérisation (23), caractérisé en ce que ledit dispositif de condensation (7) possède au moins un canal d'air de processus (11) et au moins un canal d'air de refroidissement (12) disposés selon un rapport d'échange de chaleur l'un par rapport à l'autre.
  2. Séchoir selon la revendication 1, dans lequel les orifices de pulvérisation (23) sont orientés dans différentes directions.
  3. Séchoir selon la revendication 2, dans lequel la tête de pulvérisation (20) possède un axe (24) autour duquel les orifices de pulvérisation (23) sont répartis.
  4. Séchoir selon l'une quelconque des revendications précédentes, dans lequel un séparateur cunéiforme respectif est disposé entre tous les couples d'orifices de pulvérisation (23).
  5. Séchoir selon la revendication 4, comprenant une pluralité de séparateurs cunéiformes (25), dans lequel les séparateurs en forme de clavettes (25) sont connectés les uns aux autres à leurs extrémités inférieures et présentent des tranchants (26) qui se rejoignent en un point central (27) de manière à former des fentes en forme de clavettes (28) réparties radialement et débutant au point central (27), dans lequel les fentes en forme de clavettes (28) forment une partie des orifices de pulvérisation (23).
  6. Séchoir selon l'une quelconque des revendications précédentes, dans lequel la tête de pulvérisation (20) possède une paroi ronde (22) sur laquelle les orifices de pulvérisation (23) sont formés.
  7. Séchoir selon l'une quelconque des revendications précédentes, dans lequel l'au moins un canal d'air de processus (11) comprend deux extrémités respectivement reliées à un canal d'entrée d'air (6) et à un canal de sortie d'air (9), ledit dispositif de pulvérisation (10) étant monté sur l'un parmi le canal d'entrée d'air (6) et le canal de sortie d'air (9).
  8. Séchoir selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un canal d'air de processus (11) est disposé substantiellement à la verticale et le dispositif de pulvérisation (10) est disposé par-dessus en rapport avec une direction de la gravité.
  9. Séchoir selon la revendication 8, dans lequel le dispositif de pulvérisation (10) est monté sur une portion la plus haute de l'un parmi le canal d'entrée d'air (6) et le canal de sortie d'air (9).
  10. Séchoir selon l'une quelconque des revendications précédentes, dans lequel ledit axe (24) de la tête de pulvérisation (20) est aligné avec une partie centrale (29) dudit au moins un canal d'air de processus (11).
  11. Séchoir selon l'une quelconque des revendications précédentes, dans lequel la tête de pulvérisation (20) est disposée sous le tuyau d'alimentation en eau (19).
  12. Séchoir selon l'une quelconque des revendications précédentes, dans lequel le dispositif de pulvérisation (10) possède un intérieur (30) relié à un extérieur du séchoir via une connexion de guidage d'air (31) et comprend une conduite d'eau (19, 21) passant à travers l'intérieur (30) et possède un orifice (32) dans l'intérieur (30).
EP09171401.4A 2008-09-26 2009-09-25 Sêchoir avec un dispositif de diffusion Active EP2169107B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008101567911A CN101684610B (zh) 2008-09-26 2008-09-26 衣物烘干设备

Publications (2)

Publication Number Publication Date
EP2169107A1 EP2169107A1 (fr) 2010-03-31
EP2169107B1 true EP2169107B1 (fr) 2014-03-05

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EP (1) EP2169107B1 (fr)
CN (1) CN101684610B (fr)

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WO2012005533A2 (fr) * 2010-07-08 2012-01-12 Lg Electronics Inc. Sèche-linge
TR201106336A1 (tr) * 2011-06-27 2013-01-21 Ar�El�K Anon�M ��Rket� Hava soğutmalı kondenser içeren bir çamaşır yıkama ve kurutma makinası.
TR201106331A1 (tr) 2011-06-27 2013-01-21 Arçeli̇k Anoni̇m Şi̇rketi̇ Hava soğutmalı kondenser içeren bir çamaşır yıkama ve kurutma makinası.
EP2570548A1 (fr) * 2011-09-19 2013-03-20 Electrolux Home Products Corporation N.V. Laveuse-sécheuse avec au moins un condensateur
CN103842579B (zh) * 2011-10-07 2017-02-15 阿塞里克股份有限公司 包括冷凝器的衣物洗涤和干燥机器
JP6069797B2 (ja) * 2011-11-08 2017-02-01 海爾集団公司 衣類乾燥凝縮用熱交換器、衣類乾燥手段、衣類乾燥機、および衣類乾燥方法
CN102517857B (zh) * 2011-11-08 2016-08-31 青岛海尔滚筒洗衣机有限公司 一种具有余热回收功能的干衣冷凝用热交换系统及干衣机
CN102505437B (zh) * 2011-11-08 2016-11-23 青岛海尔滚筒洗衣机有限公司 一种干衣冷凝用热交换器及干衣机
CN102517860B (zh) * 2011-12-19 2016-08-31 青岛海尔滚筒洗衣机有限公司 干衣系统及干衣系统的线屑清理方式
CN102505439B (zh) * 2011-11-08 2016-08-31 青岛海尔洗衣机有限公司 一种干衣方法及干衣机
JP5942098B2 (ja) * 2011-12-20 2016-06-29 パナソニックＩｐマネジメント株式会社 衣類乾燥機および衣類乾燥機の蒸発器の洗浄方法
CN102535127B (zh) * 2011-12-21 2016-11-23 青岛海尔滚筒洗衣机有限公司 冷凝干衣系统及其工作方法
US20130340797A1 (en) * 2012-06-26 2013-12-26 BSH Bosch und Siemens Hausgeräte GmbH Clothes treatment appliance with transfer pipe
AU2013307628B2 (en) * 2012-08-31 2017-08-03 Arcelik Anonim Sirketi A laundry washing and drying machine comprising an air-cooled condenser
EP2898133B1 (fr) * 2012-09-24 2016-12-07 Arçelik Anonim Sirketi Machine à laver et à sécher le linge comprenant un condenseur
WO2014187493A1 (fr) * 2013-05-23 2014-11-27 Arcelik Anonim Sirketi Dispositif de jet d'eau destiné à éliminer l'accumulation de peluches dans le condenseur refroidi à l'air d'une machine de traitement du linge
CN105625007B (zh) * 2014-12-01 2019-08-27 青岛海尔洗衣机有限公司 一种干衣机蒸发器线屑清理装置及清理方法
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
WO2016107699A1 (fr) 2014-12-31 2016-07-07 Arcelik Anonim Sirketi Machine à laver et à sécher le linge comprenant un condenseur refroidi par air
CN106702659A (zh) * 2015-07-31 2017-05-24 青岛海尔智能技术研发有限公司 洗干衣机及其干衣方法
CN106521908A (zh) * 2015-09-09 2017-03-22 无锡小天鹅股份有限公司 干衣机
CN106884292A (zh) * 2015-12-15 2017-06-23 青岛海尔滚筒洗衣机有限公司 一种高效洗干衣机及控制方法
EP3521503B1 (fr) * 2016-09-30 2024-02-28 Wuxi Little Swan Electric Co., Ltd. Appareil de type arroseur et ensemble condenseur
CN106283572B (zh) * 2016-09-30 2019-03-22 无锡小天鹅股份有限公司 用于洗干一体机的冷凝器组件和具有其的洗干一体机
CN106592176B (zh) * 2016-11-30 2019-05-21 无锡小天鹅股份有限公司 直排式干衣机和用于直排式干衣机的冷凝装置
CN110644210B (zh) * 2018-06-26 2023-08-18 青岛海尔洗涤电器有限公司 一种喷淋器、自清洗冷凝器及衣物处理装置

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CN1521356A (zh) * 2003-02-13 2004-08-18 乐金电子(天津)电器有限公司 具有烘干功能的滚筒洗衣机的冷凝装置
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EP1524361B1 (fr) * 2003-10-18 2006-10-04 Lg Electronics Inc. Dispositif de condensation pour machine à laver et à sécher
KR101236972B1 (ko) * 2004-07-02 2013-02-22 삼성전자주식회사 사이클론 응축장치 및 이 사이클론 응축장치를 구비한 세탁기 및 건조기
CN1888269A (zh) * 2005-06-30 2007-01-03 乐金电子(天津)电器有限公司 衣类烘干机冷凝水排出系统
DE102006018469A1 (de) 2006-04-19 2007-10-25 Lare Luft- und Kältetechnik Apparate und Regelsysteme GmbH Temperatur- und Druckausgleich von Wärmetauschern in Wäschetrocknern und ähnlichen Wärmepumpensystemen

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CN101684610A (zh) 2010-03-31
CN101684610B (zh) 2011-11-09
EP2169107A1 (fr) 2010-03-31

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