EP0477554A1 - Household laundry drier with a condenser - Google Patents

Household laundry drier with a condenser Download PDF

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Publication number
EP0477554A1
EP0477554A1 EP19910114343 EP91114343A EP0477554A1 EP 0477554 A1 EP0477554 A1 EP 0477554A1 EP 19910114343 EP19910114343 EP 19910114343 EP 91114343 A EP91114343 A EP 91114343A EP 0477554 A1 EP0477554 A1 EP 0477554A1
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EP
European Patent Office
Prior art keywords
process air
plates
condenser
clothes dryer
gratings
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Granted
Application number
EP19910114343
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German (de)
French (fr)
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EP0477554B1 (en
Inventor
Günter Dr. Wentzlaff
Peter Dipl.-Ing. Grunske
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BOSCH-SIEMENS HAUSGERAETE GMBH
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Individual
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    • 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
    • F28D9/0081—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 for one heat-exchange medium being formed by a single plate-like element ; the conduits for one heat-exchange medium being integrated in one single plate-like element
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/008—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using scrapers

Definitions

  • the invention is based on a household tumble dryer with a condenser arranged in the process air circuit, which contains a plurality of stacked heat exchanger plates with cavities which are in a cooling circuit which is as hermetically sealed as possible against the process air circuit, with the respectively assigned cavity enclosing, accessible from an operating side of the dryer from the front edges of the plates against the process air flow.
  • the entire block of heat exchanger plates can be made removable from the housing inside the tumble dryer so that it can be handled more easily for cleaning. For this purpose, cleaning under running water is provided.
  • cleaning under running water is provided.
  • the adherence of the deposited lint is so great that the lint must be processed with additional tools (e.g. with a bottle brush) to remove it.
  • this object is achieved in that a grating is provided from strips covering the end edges, which are connected to one another by narrow transverse ribs, which extend a short distance in the direction of the process air between the plates and are connected to one another at their ends by crosswise arranged stripping lips are that connect closely to the plate surfaces, but are otherwise aerodynamically shaped for the process air.
  • the handle should be placed in front of the front surface of a strip so that it does not stand in the direct air flow in front of the space between two plates.
  • the gratings, the transverse ribs and the wiper lips consist of a one-piece molded plastic part.
  • the tumble dryer in FIG. 1 has a housing 10 with an internal drying space 11, which can be designed as a horizontally rotatably mounted drum. Between this and the rear wall of the dryer there is a supply air channel 12, in which the process air is heated by means of a heating device 13 and blown into the drying room by a fan 14 via a grid wall 15. At the front of the dryer there is a loading opening 16 for loading the laundry items to be dried. The loading opening is then closed by a door 17.
  • the condenser is shown cut along the flow direction of the process air and contains heat-conducting plates 21 with cavities through which a cooling medium flows, for example fresh cooling air, transversely to the process air.
  • the process air is indicated by a filled arrow on the warm side and by a dashed line on the cold side. longitudinal arrow shown.
  • 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.
  • the wiping lips close to the surfaces of the plates 21, so that when the gratings are pulled off, the wiping lips scrape over the plate surfaces and lift off any fluff that may be attached. So that the wiper lips 26 do not excessively impede the process air flow, they are shaped in a streamlined profile.
  • the transverse ribs 27 arranged above the uppermost plate 21 form the outer end of the gratings and, in the example of FIG. 2, only carry wiping lips directed towards the plate 21 below.
  • the uppermost transverse rib 27 also has an upward wiping lip 26 in order to wipe off any fluff attached to the inner surface of the condenser housing 2.
  • the transverse ribs 25 and 27 are also not shaped like a window as in FIG. 2, but are shaped as filled strips. Their front leading edges between the strips 24 covering the end edges are also shaped to be aerodynamic.
  • a handle 28 is arranged on a strip 24 so that the tensile forces act uniformly on all parts of the gratings.
  • the gratings are now removed from the plates for cleaning.
  • the wiping lips 26 scrape the lint deposited in the inflow area from the plate surfaces. They either adhere to the front edges of the plates or to the wiping lips 26, from where they can be easily removed in each case.
  • the gratings themselves will also be covered with adhering fluff that can be easily rinsed off under running water.
  • Another advantage for the designer of a condenser equipped according to the invention is that he can firmly integrate the entire condenser block in the housing of the tumble dryer, thereby opening up the possibility of considerably reducing the housing parts for the condenser block and the process air and cooling air guides. to seal better. This will significantly increase the efficiency of such a tumble dryer.
  • the gratings indicated schematically in FIG. 4 have springs 30, each with a common root 31, which holds the strips 24 together, as transverse ribs reaching between the plates 21 in the direction of the process air.
  • the wiper lips 32 are connected to the ends of the springs 30 and are engaged in beads 29 in the operating position of the gratings.
  • the gratings are fixed in their operating position and, on the other hand, sufficient force is exerted on the plate surfaces to scrape off the fluff.
  • the wiper lips 32 immersed in the beads 29 are completely removed from the process air stream and therefore do not form any flow resistance.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Detergent Compositions (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

In a plate condenser (2) fluff from the process air settles, preeminently in the inflow region, on the plate surfaces arranged in the process-air circuit. To make it easier to clean the condenser plates (21), according to the invention there is a grating composed of strips (24) which cover the end edges of the plates and are connected to one another by means of narrow transverse ribs (25). These transverse ribs extend a short way in the direction of the process air between the plates (21) and are connected to one another at their ends by means of scraping lips (26, 32) arranged transversely thereto. The scraping lips are flush with the plate surfaces, but otherwise have a shape streamlined for the benefit of the process air. <IMAGE>

Description

Die Erfindung geht aus von einem Haushalt-Wäschetrockner mit einem im Prozeßluft-Kreis angeordneten Kondensator, der eine Mehrzahl von gestapelten Wärmetauscher-Platten mit Hohlräumen enthält, die in einem möglichst hermetisch gegen den Prozeßluft-Kreis gedichteten Kühlkreis liegen, wobei die den jeweils zugeordneten Hohlraum umschließenden, von einer Bedienungsseite des Wäschetrockners aus zugänglichen Stirnkanten der Platten gegen den Prozeßluft-Strom gerichtet sind.The invention is based on a household tumble dryer with a condenser arranged in the process air circuit, which contains a plurality of stacked heat exchanger plates with cavities which are in a cooling circuit which is as hermetically sealed as possible against the process air circuit, with the respectively assigned cavity enclosing, accessible from an operating side of the dryer from the front edges of the plates against the process air flow.

Ein derartiger Wäschetrockner ist aus der DE-PS 30 27 900 bekannt. Die Prozeßluft-Anströmseite der Wärmetauscher-Platten ist im erhöhten Maße der Beaufschlagung durch Flusen ausgesetzt, die im Prozeßluft-Strom von der Wäschetrommel des Trockners aus mitgeführt werden. Die Flusen schlagen sich mit dem Kondensat an den relativ kühlen Wärmetauscher-Platten nieder. Während das Kondensat in Strömungsrichtung von den Platten abfließt, bleiben die Flusen hauptsächlich an der Anströmkante und im vorderen Bereich jeder einzelnen Platte haften. Allmählich entsteht so ein dichter Filz von abgelagerten Wäscheflusen, der den Wärmeübergang von der Prozeßluft zur Kondensator-Fläche verschlechtert, so daß in diesem Bereich kaum noch eine Kondensation stattfindet. Das Ergebnis ist eine abnehmende Kondensationsleistung des Kondensators. Beim bekannten Wäschetrockner ist vorgesehen, den gesamten Block von Wärmetauscher-Platten aus dem Gehäuse innerhalb des Wäschetrockners entnehmbar zu gestalten, damit er zur Reinigung leichter gehandhabt werden kann. Vorgesehen ist dazu eine Reinigung unter fließendem Wasser. Jedoch ist die Haftfähigkeit der niedergeschlagenen Flusen so groß, daß der Flusenfilz mit zusätzlichem Werkzeug (z.B. mit einer Flaschenbürste) bearbeitet werden muß, um ihn zu entfernen.Such a dryer is known from DE-PS 30 27 900. The process air upstream side of the heat exchanger plates is exposed to an increased degree to the action of fluff which is carried along in the process air stream from the laundry drum of the dryer. The fluff is deposited with the condensate on the relatively cool heat exchanger plates. While the condensate flows off the plates in the direction of flow, the fluff mainly sticks to the leading edge and in the front area of each individual plate. Gradually, a thick felt of deposited laundry fluff is created, which worsens the heat transfer from the process air to the condenser surface, so that condensation hardly takes place in this area. The result is a decreasing condenser performance. In the known tumble dryer it is provided that the entire block of heat exchanger plates can be made removable from the housing inside the tumble dryer so that it can be handled more easily for cleaning. For this purpose, cleaning under running water is provided. However, the adherence of the deposited lint is so great that the lint must be processed with additional tools (e.g. with a bottle brush) to remove it.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Wäschetrockner der eingangs genannten Art den Kondensator so zu gestalten, daß die Entfernung der auf den Wärmetauscher-Platten sich ablagernden Flusen erleichtert wird, ohne den Plattenstapel des Wärmetauschers aus seinem Gehäuse entnehmen zu müssen.The invention has for its object to design the condenser in a tumble dryer of the type mentioned in such a way that the removal of the fluff deposited on the heat exchanger plates is facilitated without having to remove the plate stack of the heat exchanger from its housing.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß eine Gitterroste aus die Stirnkanten abdeckenden Streifen vorgesehen ist, die durch schmale Querrippen untereinander verbunden sind, die eine kurze Strecke weit in Richtung der Prozeßluft zwischen die Platten reichen und an ihren Enden durch quer dazu angeordnete Abstreiflippen untereinander verbunden sind, die dicht an die Platten-Oberflächen anschließen, in übrigen aber für die Prozeßluft strömungsgünstig geformt sind.According to the invention, this object is achieved in that a grating is provided from strips covering the end edges, which are connected to one another by narrow transverse ribs, which extend a short distance in the direction of the process air between the plates and are connected to one another at their ends by crosswise arranged stripping lips are that connect closely to the plate surfaces, but are otherwise aerodynamically shaped for the process air.

Hinter der Gitterroste setzen sich im Anströmbereich zwar immer noch Flusen auf den Platten ab, jedoch kann eine Bedienungsperson die Gitterroste als gesamtes Bauteil so nach vorn von den Platten ziehen, daß die Abstreiflippen den Anströmbereich der Platten schabend von Flusen reinigt. Ein Flusenfilz, der sich dort abgelagert hat, wird jedenfalls in seiner Gesamtheit von den Platten- Oberflächen abgeräumt.Behind the gratings, lint still settles on the plates in the inflow area, but an operator can pull the gratings as a whole component forward from the plates so that the wiping lips clean the inflow area of the plates from fluff. A fluff felt that has been deposited there is, in any case, removed in its entirety from the plate surfaces.

Zur leichteren Handhabung beim Entnehmen der Gitterroste ist diese mit einem Griff verbunden. Der Griff ist zweckmäßigerweise vor der Frontfläche eines Streifens anzuordnen, damit er nicht im direkten Luftstrom vor dem Zwischenraum zwischen zwei Platten steht.For easier handling when removing the gratings, they are connected with a handle. The handle should be placed in front of the front surface of a strip so that it does not stand in the direct air flow in front of the space between two plates.

Zur Fertigungsvereinfachung und zur leichteren Handhabung beim Abspülen bestehen die Gitterroste, die Querrippen und die Abstreiflippen aus einem einstückig gespritzten Kunststoffteil.To simplify production and for easier handling when rinsing, the gratings, the transverse ribs and the wiper lips consist of a one-piece molded plastic part.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels ist die Erfindung nachstehend erläutert. Es zeigen:

  • Fig. 1 eine seitliche Durchsicht durch einen Haushalt-Wäschetrockner mit einem Platten-Kondensator,
  • Fig. 2 den Anströmbereich des Platten-Stapels in perspektivischer Ansicht,
  • Fig. 3 einen Schnitt durch den Plattenstapel in Strömungsrichtung der Prozeßluft zwischen den Querrippen der Gitterroste und
  • Fig. 4 einen schnitt durch einen Plattenstapel gemäß Fig. 3 mit einer Variante der Gitterroste.
The invention is explained below using an exemplary embodiment shown in the drawing. Show it:
  • 1 is a side view through a household clothes dryer with a plate condenser,
  • 2 shows the inflow area of the plate stack in a perspective view,
  • Fig. 3 shows a section through the plate stack in the flow direction of the process air between the transverse ribs of the gratings and
  • Fig. 4 shows a section through a plate stack according to FIG. 3 with a variant of the gratings.

Der Wäschetrockner in Fig. 1 hat ein Gehäuse 10 mit einem innenliegenden Trockenraum 11, der als horizontal drehbar gelagerte Trommel ausgebildet sein kann. Zwischen diesem und der Rückwand des Trockner befindet sich ein Zuluftkanal 12, in dem die Prozeßluft mittels einer Heizeinrichtung 13 erwärmt und von einem Gebläse 14 über eine Gitterwand 15 in den Trockenraum geblasen wird. An der Vorderseite des Wäschetrockners befindet sich eine Beschickungsöffnung 16 zum Einladen der zu trocknenden Wäscheteile. Danach wird die Beschickungsöffnung von einer Tür 17 verschlossen.The tumble dryer in FIG. 1 has a housing 10 with an internal drying space 11, which can be designed as a horizontally rotatably mounted drum. Between this and the rear wall of the dryer there is a supply air channel 12, in which the process air is heated by means of a heating device 13 and blown into the drying room by a fan 14 via a grid wall 15. At the front of the dryer there is a loading opening 16 for loading the laundry items to be dried. The loading opening is then closed by a door 17.

Die vom Gebläse 14 durch den Trockenraum 11 und den Ringspalt zwischen der Tür und dem äußeren Rahmen der Beschickungsöffnung 16 geblasene Prozeßluft tritt durch das Flusensieb 18 in den Abluftkanal 19 ein. Von dort gelangt die Prozeßluft in den Kondensator 2. Der Kondensator ist entlang der Strömungsrichtung der Prozeßluft geschnitten dargestellt und enthält gut wärmeleitende Platten 21 mit Hohlräumen, die quer zur Prozeßluft von einem Kühlmedium durchströmt werden, z.B. von frischer Kühlluft. Die Prozeßluft ist auf der warmen Seite durch einen ausgefüllten Pfeil und auf der kalten Seite durch einen gestrichelten, längsgestreiften Pfeil dargestellt. Die warme und feuchtigkeitsbeladene Prozeßluft gibt an den Oberflächen der Platten 21 Wärme und Feuchtigkeit ab und fließt gekühlt dem Gebläse 14 zu. Die Feuchtigkeit sammelt sich am Ausgang des Kondensators und fließt zum Kondensat-Sammelbehälter 22 ab, aus dem das Kondensat abgepumpt oder manuell entfernt werden kann.The process air blown by the blower 14 through the drying chamber 11 and the annular gap between the door and the outer frame of the loading opening 16 enters the exhaust air duct 19 through the fluff filter 18. From there, the process air reaches the condenser 2. The condenser is shown cut along the flow direction of the process air and contains heat-conducting plates 21 with cavities through which a cooling medium flows, for example fresh cooling air, transversely to the process air. The process air is indicated by a filled arrow on the warm side and by a dashed line on the cold side. longitudinal arrow shown. The warm and moisture-laden process air releases heat and moisture from the surfaces of the plates 21 and flows to the blower 14 in a cooled state. 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.

An der Vorderseite des Wäschetrockner-Gehäuses 10 befindet sich außerdem eine Tür oder Klappe 23, die von der Bedienungsperson zum Zwecke der Reinigung des Kondensators 2 geöffnet werden kann.At the front of the dryer housing 10 there is also a door or flap 23 which can be opened by the operator for the purpose of cleaning the condenser 2.

Der in Fig. 2 teilweise dargestellte Plattenstapel ist in Höhe der Spalte von übereinanderliegenden Querrippen in Richtung der Prozeßluft geschnitten dargestellt. Aus der Schnittebene der Platten 21 fließt angewärmte Kühlluft, angedeutet durch den quergestreiften Pfeil. Die der Prozeßluft zugewandten Stirnkanten der Platten 21 sind mittels Streifen 24 abgedeckt, die durch schmale Querrippen 25 untereinander verbunden sind. Sie bilden dadurch eine Gitterroste, die von der Stirnkanten-Seite des Kondensators her über den Plattenstapel geschoben werden kann. Die Querrippen 25 reichen eine kurze Strecke weit in Richtung der Prozeßluft (ausgefüllter Pfeil) zwischen den Platten 21 und sind an ihren Enden durch quer zur Prozeßluft angeordnete Abstreiflippen 26 untereinander verbunden. Die Abstreiflippen schließen dicht an die Oberflächen der Platten 21 an, so daß beim Abziehen der Gitterroste die Abstreiflippen über die Plattenoberflächen schaben und dort evtl. angesetzte Flusen abheben. Damit die Abstreiflippen 26 den Prozeßluft-Strom nicht übermäßig behindern, sind sie im Profil strömungsgünstig geformt. Die oberhalb der obersten Platte 21 angeordneten Querrippen 27 bilden den äußeren Abschluß der Gitterroste und tragen im Beispiel der Fig. 2 nur zur darunterliegenden Platte 21 gerichtete Abstreiflippen.The plate stack partially shown in FIG. 2 is shown cut at the height of the column of superimposed transverse ribs in the direction of the process air. Warmed cooling air flows from the sectional plane of the plates 21, indicated by the striated arrow. The end edges of the plates 21 facing the process air are covered by strips 24 which are connected to one another by narrow transverse ribs 25. As a result, they form a grating that can be pushed over the plate stack from the front edge side of the capacitor. The transverse ribs 25 extend a short distance in the direction of the process air (filled arrow) between the plates 21 and are connected to one another at their ends by wiper lips 26 arranged transversely to the process air. The wiping lips close to the surfaces of the plates 21, so that when the gratings are pulled off, the wiping lips scrape over the plate surfaces and lift off any fluff that may be attached. So that the wiper lips 26 do not excessively impede the process air flow, they are shaped in a streamlined profile. The transverse ribs 27 arranged above the uppermost plate 21 form the outer end of the gratings and, in the example of FIG. 2, only carry wiping lips directed towards the plate 21 below.

Bei dem in Fig. 3 in Strömungsrichtung der Prozeßluft zwischen zwei Querrippen geschnitten dargestellten Kondensator hat die oberste Querrippe 27 auch eine nach oben gerichtete Abstreiflippe 26, um evtl. an der Innenfläche des Kondensator-Gehäuses 2 angesetzte Flusen abzustreifen. In diesem Beispiel der Fig. 3 sind die Querrippen 25 und 27 außerdem nicht wie in Fig. 2 fensterförmig gestaltet, sondern als ausgefüllte Streifen geformt. Ihre vorderen Anströmkanten zwischen den die Stirnkanten abdeckenden Streifen 24 sind ebenfalls strömungsgünstig geformt.In the condenser shown in FIG. 3 in the flow direction of the process air between two transverse ribs, the uppermost transverse rib 27 also has an upward wiping lip 26 in order to wipe off any fluff attached to the inner surface of the condenser housing 2. In this example of FIG. 3, the transverse ribs 25 and 27 are also not shaped like a window as in FIG. 2, but are shaped as filled strips. Their front leading edges between the strips 24 covering the end edges are also shaped to be aerodynamic.

Zum leichten Abziehen der Gitterroste aus dem Plattenstapel ist an einem Streifen 24 ein Griff 28 so angeordnet, daß die Zugkräfte gleichmäßig auf alle Teile der Gitterroste einwirken. Zur Reinigung wird nun die Gitterroste von den Platten abgezogen. Dabei schaben die Abstreiflippen 26 die im Anströmbereich abgesetzten Flusen von den Plattenoberflächen. Sie bleiben entweder an den Platten-Stirnkanten oder an den Abstreiflippen 26 haften, von wo sie jeweils leicht abgenommen werden können. Im übrigen wird die Gitterroste selbst auch mit anhaftenden Flusen belegt sein, die unter fließenden Wasser leicht abgespült werden können.For easy removal of the gratings from the stack of plates, a handle 28 is arranged on a strip 24 so that the tensile forces act uniformly on all parts of the gratings. The gratings are now removed from the plates for cleaning. The wiping lips 26 scrape the lint deposited in the inflow area from the plate surfaces. They either adhere to the front edges of the plates or to the wiping lips 26, from where they can be easily removed in each case. In addition, the gratings themselves will also be covered with adhering fluff that can be easily rinsed off under running water.

Für den Konstrukteur eines erfindungsgemäß ausgestatteten Kondensators ergibt sich noch ein Vorteil dadurch, daß er den gesamten Kondensatorblock fest im Gehäuse des Wäschetrockners integrieren kann und sich ihm damit die Möglichkeit eröffnet, die Gehäuseteile für den Kondensatorblock und die Prozeßluft- und Kühlluft-Führungen in erheblichem, besserem Maße abdichten zu können. Damit wird die Effizienz eines derartig ausgestatteten Wäschetrockners erheblich steigen.Another advantage for the designer of a condenser equipped according to the invention is that he can firmly integrate the entire condenser block in the housing of the tumble dryer, thereby opening up the possibility of considerably reducing the housing parts for the condenser block and the process air and cooling air guides. to seal better. This will significantly increase the efficiency of such a tumble dryer.

Die in Fig. 4 schematisch angedeutete Gitterroste hat als in Richtung der Prozeßluft zwischen die Platten 21 reichende Querrippen Federn 30 mit jeweils gemeinsamer Wurzel 31, welche die Streifen 24 zusammenhält. Mit den Enden der Federn 30 sind die Abstreiflippen 32 verbunden, die in Betriebsstellung der Gitterroste in Sicken 29 eingerastet sind. Damit wird einerseits die Gitterroste in ihrer Betriebsstellung fixiert und andererseits zum Abstreifen der Flusen genügend Kraft auf die Plattenoberflächen ausgeübt. Außerdem sind die in den Sicken 29 eingetauchten Abstreiflippen 32 völlig aus dem Prozeßluft-Strom genommen und bilden daher keinen Strömungswiderstand.The gratings indicated schematically in FIG. 4 have springs 30, each with a common root 31, which holds the strips 24 together, as transverse ribs reaching between the plates 21 in the direction of the process air. The wiper lips 32 are connected to the ends of the springs 30 and are engaged in beads 29 in the operating position of the gratings. On the one hand, the gratings are fixed in their operating position and, on the other hand, sufficient force is exerted on the plate surfaces to scrape off the fluff. In addition, the wiper lips 32 immersed in the beads 29 are completely removed from the process air stream and therefore do not form any flow resistance.

Claims (5)

1. Haushalt-Wäschetrockner mit einem im Prozeßluft-Kreis angeordneten Kondensator, der eine Mehrzahl von gestapelten Wärmetauscher-Platten mit Hohlräumen enthält, die in einem möglichst hermetisch gegen den Prozeßluft-Kreis gedichteten Kühlkreis liegen, wobei die den jeweils zugeordneten Hohlraum umschließenden, von einer Bedienungsseite des Wäschetrockners aus zugänglichen Stirnkanten der Platten gegen den Prozeßluft-Strom gerichtet sind, dadurch gekennzeichnet, daß eine Gitterroste aus die Stirnkanten abdeckenden Streifen (24) vorgesehen ist, die durch schmale Querrippen (25) untereinander verbunden sind, die eine kurze Strecke weit in Richtung der Prozeßluft zwischen die Platten (21) reichen und fern von den Streifen (24) durch quer zur Prozeßluft angeordnete Abstreiflippen (26, 32) untereinander verbunden sind, die dicht an die Plattenoberflächen anschließen, im übrigen aber für die Prozeßluft strömungsgünstig geformt sind.1. Household clothes dryer with a condenser arranged in the process air circuit, which contains a plurality of stacked heat exchanger plates with cavities which lie in a cooling circuit that is as hermetically sealed as possible against the process air circuit, the cavity surrounding the respectively assigned one being separated from one another Operating side of the dryer from accessible end edges of the plates are directed against the process air flow, characterized in that a grating is provided from the end edges covering strips (24) which are interconnected by narrow transverse ribs (25), which are a short distance far in Direction of the process air between the plates (21) and far from the strips (24) are connected to each other by wipers (26, 32) arranged transversely to the process air, which close to the plate surfaces, but are otherwise aerodynamically shaped for the process air. 2. Haushalt-Wäschetrockner nach Anspruch 1, dadurch gekennzeichnet, daß die Gitterroste mit wenigstens einem Griff (28) verbunden ist.2. Household clothes dryer according to claim 1, characterized in that the gratings are connected to at least one handle (28). 3. Haushalt-Wäschetrockner nach Anspruch 2, dadurch gekennzeichnet, daß der Griff (28) vor der Frontfläche eines Streifens (24) angeordnet ist.3. Household clothes dryer according to claim 2, characterized in that the handle (28) is arranged in front of the front surface of a strip (24). 4. Haushalt-Wäschetrockner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Gitterroste, die Querrippen (25) und die Abstreiflippen (26) aus einem einstückig gespritzten Kunststoffteil bestehen.4. Household clothes dryer according to one of claims 1 to 3, characterized in that the gratings, the transverse ribs (25) and the scraper lips (26) consist of an integrally molded plastic part. 5. Haushalt-Wäschetrockner nach Anspruch 4, dadurch gekennzeichnet, daß die Plattenoberflächen die Abstreiflippen (32) in sich aufnehmende Sicken (29) aufweisen.5. Household clothes dryer according to claim 4, characterized in that the plate surfaces have the wiper lips (32) in receiving beads (29).
EP91114343A 1990-09-24 1991-08-27 Household laundry drier with a condenser Expired - Lifetime EP0477554B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4030195 1990-09-24
DE4030195A DE4030195A1 (en) 1990-09-24 1990-09-24 HOUSEHOLD LAUNDRY DRYER WITH A CONDENSER

Publications (2)

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EP0477554A1 true EP0477554A1 (en) 1992-04-01
EP0477554B1 EP0477554B1 (en) 1995-02-15

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EP91114343A Expired - Lifetime EP0477554B1 (en) 1990-09-24 1991-08-27 Household laundry drier with a condenser

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EP (1) EP0477554B1 (en)
JP (1) JPH04226700A (en)
AT (1) ATE118564T1 (en)
DE (2) DE4030195A1 (en)
ES (1) ES2068445T3 (en)
GR (1) GR3015079T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774637A3 (en) * 1995-11-20 1998-11-11 Electrolux Zanussi S.p.A. A method for producing a cross-flow heat-exchanging device and a heat-exchanging device produced according to such a method
EP1518957A1 (en) * 2003-09-24 2005-03-30 Lg Electronics Inc. Condensing-type dryer
EP2042646A1 (en) * 2007-09-27 2009-04-01 Electrolux Home Products Corporation N.V. Home laundry dryer
US8056254B2 (en) 2005-07-29 2011-11-15 Bsh Bosch Und Siemens Hausgeraete Gmbh Tumble dryer with a lint filter
ITRN20110054A1 (en) * 2011-08-05 2013-02-06 Indesit Co Spa APPLIANCE

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214672C3 (en) * 1992-05-02 2001-10-25 Aeg Hausgeraete Gmbh Tumble dryer with a heat pump circuit
DE4237117A1 (en) * 1992-11-03 1994-05-05 Bosch Siemens Hausgeraete Heat exchange plate package - has extrusion to bond plates together at the air entry and outlet openings
KR100459136B1 (en) * 2002-08-21 2004-12-03 엘지전자 주식회사 structure for arrangement cooling pin in condenser for condensing type clothes drier
KR100463539B1 (en) * 2002-12-03 2004-12-29 엘지전자 주식회사 structure for condenser in condensing type clothes dryer
DE102006050877A1 (en) * 2006-10-27 2008-04-30 BSH Bosch und Siemens Hausgeräte GmbH Heat exchanger for air circulation, has foil that is placed on part of inner surface with side that facing channel wall and another side that facing air flow, where foil is detachable from inner surface
DE102007012071A1 (en) 2007-03-13 2008-09-18 BSH Bosch und Siemens Hausgeräte GmbH Washer dryer with improved lint removal and process for its operation
DE102008054104A1 (en) * 2008-10-31 2010-05-06 Herbert Kannegiesser Gmbh Method and device for treating the exhaust air from heated laundry machines

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DE3027900A1 (en) * 1980-07-23 1982-02-11 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart HOUSEHOLD LAUNDRY DRYER
DE3738031A1 (en) * 1987-11-09 1989-05-18 Bosch Siemens Hausgeraete Method and device for removing lint from a condensation-water separator are designed as a heat exchanger

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DE3027900A1 (en) * 1980-07-23 1982-02-11 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart HOUSEHOLD LAUNDRY DRYER
DE3738031A1 (en) * 1987-11-09 1989-05-18 Bosch Siemens Hausgeraete Method and device for removing lint from a condensation-water separator are designed as a heat exchanger

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774637A3 (en) * 1995-11-20 1998-11-11 Electrolux Zanussi S.p.A. A method for producing a cross-flow heat-exchanging device and a heat-exchanging device produced according to such a method
EP1518957A1 (en) * 2003-09-24 2005-03-30 Lg Electronics Inc. Condensing-type dryer
US7197838B2 (en) 2003-09-24 2007-04-03 Lg Electronics Inc. Condensing-type dryer
US8056254B2 (en) 2005-07-29 2011-11-15 Bsh Bosch Und Siemens Hausgeraete Gmbh Tumble dryer with a lint filter
EP2042646A1 (en) * 2007-09-27 2009-04-01 Electrolux Home Products Corporation N.V. Home laundry dryer
RU2446239C2 (en) * 2007-09-27 2012-03-27 Электролюкс Хоум Продактс Корпорейшн Н.В. Household dryer for linen
ITRN20110054A1 (en) * 2011-08-05 2013-02-06 Indesit Co Spa APPLIANCE
EP2573246A1 (en) * 2011-08-05 2013-03-27 Indesit Company S.p.A. Electrical household appliance
RU2599369C2 (en) * 2011-08-05 2016-10-10 Индезит Компани С.П.А. Domestic electrical appliance

Also Published As

Publication number Publication date
EP0477554B1 (en) 1995-02-15
GR3015079T3 (en) 1995-05-31
ES2068445T3 (en) 1995-04-16
DE4030195A1 (en) 1992-03-26
DE59104586D1 (en) 1995-03-23
JPH04226700A (en) 1992-08-17
ATE118564T1 (en) 1995-03-15

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