EP0429953A2 - Condenseur refroidi par air pour sèche-linge - Google Patents

Condenseur refroidi par air pour sèche-linge Download PDF

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Publication number
EP0429953A2
EP0429953A2 EP19900121783 EP90121783A EP0429953A2 EP 0429953 A2 EP0429953 A2 EP 0429953A2 EP 19900121783 EP19900121783 EP 19900121783 EP 90121783 A EP90121783 A EP 90121783A EP 0429953 A2 EP0429953 A2 EP 0429953A2
Authority
EP
European Patent Office
Prior art keywords
frame
plates
cooling air
capacitor according
foils
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
EP19900121783
Other languages
German (de)
English (en)
Other versions
EP0429953B1 (fr
EP0429953A3 (en
Inventor
Günter Dr. Wentzlaff
Stefan Dipl.-Ing. Morath
Klaus Dipl.-Ing. Grunert (Fh)
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0429953A2 publication Critical patent/EP0429953A2/fr
Publication of EP0429953A3 publication Critical patent/EP0429953A3/de
Application granted granted Critical
Publication of EP0429953B1 publication Critical patent/EP0429953B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0025—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by zig-zag bend plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits

Definitions

  • the invention relates to an air-cooled condenser for condensing the laundry moisture transferred into the process air from a household tumble dryer, the condenser containing hollow plates stacked at a distance from one another and during operation, on the one hand, through the plate cavities of cooling air and, on the other hand, through the plates -Distance spaces essentially in cross flow to the cooling air through which process air flows.
  • Such a capacitor is known from German utility model 83 18 395.
  • the heat exchanger of this condenser contains stacked plates, which are bent according to DE-OS 30 27 900 from aluminum sheet and are provided with ribbing in the cooling air duct. Instead of such plates, usually flat hollow extruded profiles are used, of which sections are joined to form a plate according to the above-mentioned embodiments.
  • the stacked panels are molded into a package and held at a distance from each other by plastic molded parts attached to the side and glued with sealing compound.
  • these plates are very expensive in terms of the material used fes (aluminum) and in terms of their manufacture.
  • the assembly of the plates and their sealing attachment in the separate side parts is very complex and prone to errors in terms of the tightness between the cooling air and the process air channel.
  • the invention has for its object to provide a construction for a capacitor mentioned in the introduction, in which the sealing problems mentioned above are avoided and the manufacture of the capacitor, in particular the assembly of its individual parts into a package, is suitable for fully automated production.
  • the plates are essentially made of a hollow lattice-like plastic frame with the condensation surfaces forming plastic films, which sealingly abut on all surfaces separating a connection between cavities and spaces.
  • Such a construction enables the automatic production of the plates from molded plastic parts and the automatic placement of plastic films and their connection to the frame.
  • the individual plates can also be automatically stacked and connected to one another in a suitable manner.
  • the frames in the cavity have a plurality of partition walls aligned in the flow direction of the cooling air, the height of which is equal to the frame thickness and the surfaces facing the condensation surface serve as support surfaces for the foils.
  • the foils should lie sealingly on the support surfaces. This prevents the foils from fluttering in the channels when the current is strong and thereby lifting off from the support surfaces.
  • the foils of each plate can consist of one piece which is placed around a frame edge oriented in the flow direction of the cooling air. This shape simplifies production in that the films are pulled off a roll, placed on an outer frame edge, folded over on the opposite frame edge, returned as a condensation surface to the first frame edge and can be cut off there.
  • embodiments of the invention are suitable in which the foils are welded or glued to its material at the contact surfaces to the frame or in which the foils are extrusion-coated with its material on the contact surfaces to the frame are.
  • the frame moldings comprise the side cheeks surrounding the inflow and outflow openings of the cooling air, which are connected in one piece to the spacer strips which determine the distance to the top or bottom plate and extend over the entire width of the cooling air cavities.
  • the spacer strips integrated into the frame molding reduce the number of individual parts required for a capacitor according to the invention. Furthermore, the number of sealing surfaces can be reduced.
  • the stacked plates are sealingly connected to one another at the contact surfaces between the one longitudinal edge of the side cheeks and the free longitudinal edge of the spacer strips. Such a connection results in a compact plate stack as a package.
  • the sealing connection can also consist of an adhesive or a weld.
  • the invention can advantageously be further developed in that the plastic films are pre-stretched before being connected to the plastic frame.
  • pre-stretched films are commercially available and are always used where a firm position of the films is required after heat treatment. This use has the essential advantage in the condenser according to the invention that after the heat treatment shrinked films no longer contain any risk of wrinkling, which would lead to the accumulation of condensate during operation of the tumble dryer and reduce the heat transfer.
  • a capacitor according to the invention can best be handled in practice in that the stacked plates form a block, the top and bottom of which are covered by a plastic cover plate at a distance from the next stacked plate. As a result, the plastic foils sensitive condensation surfaces.
  • the entire package of stacked plates and plastic cover plates can be held together by at least two tensioning straps wrapping around the package.
  • tensioning straps are known for example as parcel straps, have a high tension and can be attached automatically. Special sealing measures on the contact surfaces of the stacked plates and plastic cover plates would be unnecessary.
  • the tumble dryer shown as an exemplary embodiment in FIG. 1 has a housing 10 with an internal drying space 11. Between this and the rear wall of the dryer there is a supply air duct 12 in which the air is heated by means of a heating device 13 and by a fan 14 via a grille wall 15 is blown into the drying room At the front of the dryer there is a loading opening 16 for loading the laundry parts to be dried. The loading opening is then closed by a door 17.
  • the Pro arrives from there zeßluft in the air-cooled condenser 2.
  • the condenser is shown partially broken and contains heat-conducting plates 21 with cavities which are traversed by fresh cooling air across the process air.
  • the process air is shown on the warm side by a solid arrow and on the cold side by a dashed, streaked arrow.
  • the moisture collects at the outlet of the condenser and flows off to the condensate collecting container 22, from which the condensate can be pumped out or removed manually.
  • a door or flap 23 which can be opened by the operator for the purpose of cleaning the condenser 2. Before cleaning, the plates 21 can be pulled out of the condenser 2 as a package and cleaned outside.
  • the plates 21 contain a uniform plastic molding.
  • This molded part is formed from two side walls 24, which together with end strips 25 form the support frame for the film 26 shown in FIG. 3.
  • the side walls 24 contain inflow openings 27 and outflow openings 28 for the cooling air.
  • partition walls 29 are also provided which run parallel to the end strips 25 and are essentially aligned in the flow direction of the cooling air and are as high as the entire frame is thick. These dividing walls 29 can deviate from the planar shape in a manner not shown here regularly or irregularly in order to swirl the cooling air flowing through the cooling air channels delimited by them. As a result, the cooling air comes into closer contact with the condensation surfaces formed by the film.
  • the plastic frames 24, 25 with their partitions 29 form the cavities for the cooling air.
  • the process air sweeps across the cooling air over the condensation surfaces formed by the drawn-on plastic film 26.
  • the plates each form spacing spaces which are maintained by spacer strips 30 on the undersides of the cheeks 24.
  • spacer strips sit on the respective upper edge of the side cheek 24 of the plate below. Between the spacer strips 30 arranged on both sides on the one hand and the underside of the upper plate and the upper side of the lower plate on the other hand, a space is formed which guides the process air.
  • the film 26 can, as shown in Fig. 3, consist of one piece and folded around a face bar 25 so that it lies with its imaginary line network 31 on the respective contact surfaces of the plastic molding (Fig. 2).
  • the longitudinal lines 32 lie on the upper or lower long narrow sides 33 of the side walls 24 and the transverse lines 34 of the line network 31 on the support surfaces 35 of the partition walls 29.
  • the materials of the film and the frame can be welded or glued to one another at these contact surfaces.
  • Another fastening option is also that the film material is at least partially extrusion-coated by the material of the frame along the contact surfaces. This would mean inserting the foils into the injection mold in the manufacturing process for such a plate before the plastic frame is injection molded. 3, the plastic films can also be present separately for each condensation surface.
  • Plates produced in this way can be stacked in accordance with the exemplary embodiment in FIG. 2.
  • the number of stacked plates in one package can be varied; For use in household tumble dryers, a number of nine plates stacked one on top of the other has proven to be sufficient, starting from a base area available for the condenser.
  • Such a package of stacked plates can become a uniformly manageable part by sealingly connecting the individual plates to one another at their surfaces in contact with one another - in the present example these are the lower longitudinal strips of the spacer strips 30 and the upper longitudinal strips of the side walls 24.
  • Such a sealing connection can consist of an adhesive or a weld.
  • the contact areas can also be through mechanical pressure of the plates become tight.
  • an additional application of a sealing compound is recommended because the seal between the cooling air and the process air channels should be as ideal as possible.
  • Such a mechanical connection can be achieved by clamping the side panels and spacer strips stacked one above the other.
  • a plastic cover plate is advantageously provided at a distance from the next stacked plate on its top and on its underside, such a plate pack could be used for the mechanical connection of the plates to one another by at least two Package wrapping straps to be held together.
  • the distance of the additional plastic cover plate on the top should then be maintained by means of separate spacer strips.
  • the plastic films attached to the frame can advantageously be pre-stretched according to an embodiment of the invention before they are processed. Since such plastic frames are subject to unwanted deformations after their injection molding process (warping, shrinkage, thermal expansion), folds could form in the film glued to the frame, in which condensate collects, which hinders the transition from the process air to the cooling air. Such a pre-stretched, so-called shrink film would avoid this effect because it tensions itself automatically when the capacitor is put into operation for the first time. This measure ensures that the film is taut and wrinkle-free in any correct operating mode, from which the condensate can flow freely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP90121783A 1989-12-01 1990-11-14 Condenseur refroidi par air pour sèche-linge Expired - Lifetime EP0429953B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3939855 1989-12-01
DE3939855A DE3939855A1 (de) 1989-12-01 1989-12-01 Luftgekuehlter kondensator fuer einen haushalt-waeschetrockner

Publications (3)

Publication Number Publication Date
EP0429953A2 true EP0429953A2 (fr) 1991-06-05
EP0429953A3 EP0429953A3 (en) 1991-09-25
EP0429953B1 EP0429953B1 (fr) 1996-01-17

Family

ID=6394645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121783A Expired - Lifetime EP0429953B1 (fr) 1989-12-01 1990-11-14 Condenseur refroidi par air pour sèche-linge

Country Status (2)

Country Link
EP (1) EP0429953B1 (fr)
DE (2) DE3939855A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774637A2 (fr) 1995-11-20 1997-05-21 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Procédé pour fabriquer un échangeur de chaleur à courants croisés et échangeur de chaleur fabriqué selon ce procédé
EP0982427A1 (fr) * 1998-08-25 2000-03-01 Joma-Polytec Kunststofftechnik GmbH Echangeur de chaleur à courants croisés pour sèche-linge avec condenseur
EP1203923A2 (fr) 2000-11-01 2002-05-08 AKG-Thermotechnik GmbH & Co.KG Echangeur de chaleur, en particulier sèche-linge à condensation
WO2004040220A1 (fr) * 2002-10-31 2004-05-13 Oxycell Holding B.V. Procede de fabrication d'un echangeur de chaleur, echangeur de chaleur ainsi produit
EP1518957A1 (fr) * 2003-09-24 2005-03-30 Lg Electronics Inc. Seche-linge à condensation
EP1550764A1 (fr) * 2003-12-26 2005-07-06 Lg Electronics Inc. Sèche-linge et système de drainage pour le condensat
KR100826537B1 (ko) 2007-02-23 2008-05-02 엘지전자 주식회사 열교환기 및 이를 포함한 응축식 의류건조기
CN100408750C (zh) * 2003-12-22 2008-08-06 Lg电子株式会社 干衣机及其冷凝器组件
CN100451231C (zh) * 2003-04-11 2009-01-14 乐金电子(天津)电器有限公司 冷凝式衣类烘干机用冷凝器的结构
US20110167665A1 (en) * 2010-01-13 2011-07-14 Peet Shoe Dryer, Inc. Reservoir bladder dryer system
ITRN20100080A1 (it) * 2010-12-22 2012-06-23 Indesit Co Spa Elettrodomestico
CN104911877A (zh) * 2014-03-14 2015-09-16 海尔集团公司 一种具有框架的热交换器
CN104911882A (zh) * 2014-03-14 2015-09-16 海尔集团公司 一种干衣机或洗干一体机
CN104911881A (zh) * 2014-03-14 2015-09-16 海尔集团公司 一种空气冷凝结构
WO2015197423A1 (fr) * 2014-06-24 2015-12-30 BSH Hausgeräte GmbH Échangeur de chaleur pour un appareil ménager, procédé servant à produire un échangeur de chaleur de ce type ainsi qu'appareil ménager équipé d'un échangeur de chaleur de ce type

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237117A1 (de) * 1992-11-03 1994-05-05 Bosch Siemens Hausgeraete Verfahren zum Herstellen eines Pakets von Wärmetauscher-Platten für einen Haushalt-Wäschetrockner, Werkzeug für ein solches Herstellungsverfahren und nach diesem Verfahren hergestelltes Plattenpaket
DE19838525C2 (de) * 1997-09-03 2002-12-05 Joma Polytec Kunststofftechnik Kreuzstrom-Wärmetauscher für Kondensationswäschetrockner und Herstellungsverfahren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486220A1 (fr) * 1980-07-04 1982-01-08 Sueddeutsche Kuehler Behr Seche-linge a condensation et refroidissement par air
DE3027900A1 (de) * 1980-07-23 1982-02-11 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Haushalt-waeschetrockner
DE8318395U1 (de) * 1983-06-24 1983-10-20 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Haushalt-waeschetrockner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486220A1 (fr) * 1980-07-04 1982-01-08 Sueddeutsche Kuehler Behr Seche-linge a condensation et refroidissement par air
DE3027900A1 (de) * 1980-07-23 1982-02-11 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Haushalt-waeschetrockner
DE8318395U1 (de) * 1983-06-24 1983-10-20 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Haushalt-waeschetrockner

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774637A2 (fr) 1995-11-20 1997-05-21 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Procédé pour fabriquer un échangeur de chaleur à courants croisés et échangeur de chaleur fabriqué selon ce procédé
EP0982427A1 (fr) * 1998-08-25 2000-03-01 Joma-Polytec Kunststofftechnik GmbH Echangeur de chaleur à courants croisés pour sèche-linge avec condenseur
EP1203923A2 (fr) 2000-11-01 2002-05-08 AKG-Thermotechnik GmbH & Co.KG Echangeur de chaleur, en particulier sèche-linge à condensation
WO2004040220A1 (fr) * 2002-10-31 2004-05-13 Oxycell Holding B.V. Procede de fabrication d'un echangeur de chaleur, echangeur de chaleur ainsi produit
CN100451231C (zh) * 2003-04-11 2009-01-14 乐金电子(天津)电器有限公司 冷凝式衣类烘干机用冷凝器的结构
EP1518957A1 (fr) * 2003-09-24 2005-03-30 Lg Electronics Inc. Seche-linge à condensation
CN100465370C (zh) * 2003-09-24 2009-03-04 Lg电子有限公司 凝结型干燥器
US7197838B2 (en) 2003-09-24 2007-04-03 Lg Electronics Inc. Condensing-type dryer
CN100408750C (zh) * 2003-12-22 2008-08-06 Lg电子株式会社 干衣机及其冷凝器组件
US7121018B2 (en) 2003-12-26 2006-10-17 Lg Electronics Inc. Dryer, and drain structure of the same
EP1550764A1 (fr) * 2003-12-26 2005-07-06 Lg Electronics Inc. Sèche-linge et système de drainage pour le condensat
KR100826537B1 (ko) 2007-02-23 2008-05-02 엘지전자 주식회사 열교환기 및 이를 포함한 응축식 의류건조기
US20110167665A1 (en) * 2010-01-13 2011-07-14 Peet Shoe Dryer, Inc. Reservoir bladder dryer system
US8595951B2 (en) * 2010-01-13 2013-12-03 Peet Shoe Dryer, Inc. Reservoir bladder dryer system
WO2012085839A1 (fr) 2010-12-22 2012-06-28 Indesit Company S.P.A. Appareil électroménager électrique
RU2583908C2 (ru) * 2010-12-22 2016-05-10 Индезит Компани С.П.А. Бытовой электроприбор
EP3081688A3 (fr) * 2010-12-22 2016-11-02 Indesit Company S.p.A. Appareil électroménager
EP3081688A2 (fr) 2010-12-22 2016-10-19 Indesit Company S.p.A. Appareil électroménager
ITRN20100080A1 (it) * 2010-12-22 2012-06-23 Indesit Co Spa Elettrodomestico
CN104911881A (zh) * 2014-03-14 2015-09-16 海尔集团公司 一种空气冷凝结构
CN104911882A (zh) * 2014-03-14 2015-09-16 海尔集团公司 一种干衣机或洗干一体机
CN104911877A (zh) * 2014-03-14 2015-09-16 海尔集团公司 一种具有框架的热交换器
KR20160132442A (ko) * 2014-03-14 2016-11-18 하이어 그룹 코포레이션 건조기 및 세탁건조 복합기
EP3118364A4 (fr) * 2014-03-14 2017-11-08 Haier Group Corporation Sèche-linge ou machine à laver séchante
US9976249B2 (en) 2014-03-14 2018-05-22 Haier Group Corporation Dryer or washer dryer
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
CN104911877B (zh) * 2014-03-14 2018-12-25 青岛海尔滚筒洗衣机有限公司 一种具有框架的热交换器
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
WO2015197423A1 (fr) * 2014-06-24 2015-12-30 BSH Hausgeräte GmbH Échangeur de chaleur pour un appareil ménager, procédé servant à produire un échangeur de chaleur de ce type ainsi qu'appareil ménager équipé d'un échangeur de chaleur de ce type

Also Published As

Publication number Publication date
EP0429953B1 (fr) 1996-01-17
DE3939855A1 (de) 1991-06-06
EP0429953A3 (en) 1991-09-25
DE59010071D1 (de) 1996-02-29

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