EP1871945A1 - Condenser tumble-dryer - Google Patents

Condenser tumble-dryer

Info

Publication number
EP1871945A1
EP1871945A1 EP06704226A EP06704226A EP1871945A1 EP 1871945 A1 EP1871945 A1 EP 1871945A1 EP 06704226 A EP06704226 A EP 06704226A EP 06704226 A EP06704226 A EP 06704226A EP 1871945 A1 EP1871945 A1 EP 1871945A1
Authority
EP
European Patent Office
Prior art keywords
base module
dryer
dryer according
heat exchanger
air
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
EP06704226A
Other languages
German (de)
French (fr)
Other versions
EP1871945B1 (en
Inventor
Lothar Dittmer
Holger LÖFFLER
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 PL06704226T priority Critical patent/PL1871945T3/en
Publication of EP1871945A1 publication Critical patent/EP1871945A1/en
Application granted granted Critical
Publication of EP1871945B1 publication Critical patent/EP1871945B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • 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 invention relates to the preamble of claim 1 a condensation dryer with receiving devices for the following components - an air-cooled condenser with heat exchanger, a drive motor for a laundry drum and blower for the process air and the cooling air,
  • Such a condensation dryer has an at least approximately horizontally oriented and rotatably mounted laundry drum, two separate systems for the cooling air and the process air flow, a motor for driving the blower and the laundry drum, an electric heater for heating the process air, a condenser with a heat exchanger in which the process air is cooled and the moisture absorbed by the dry material is removed by condensation, and devices for removing the condensate.
  • Condensing clothes dryers are characterized by a self-contained cycle of process air guidance.
  • the material to be dried is moved in the rotatable drum and charged with the heated process air, which is blown through openings in the drum rear wall and flows through the laundry drum approximately axially from the drum rear wall ago.
  • the process air enters the condenser via a fuel screen in the area of the feed opening, where the process air in the heat exchanger is cooled by the cooling air drawn in from outside and the moisture absorbed by the dry material condenses.
  • the collected in a sump condensate is removed by a pump.
  • Heat exchanger cooled and dehumidified process air is transported via the heater back into the drum interior.
  • tumble driers In known tumble driers, primarily for reasons of space, a number of operationally required functional assemblies and components (components), such as the drive motor, the fan for the cooling and process air, the condenser, the condensate drip tray and the pump and facilities for conveying and guiding the process - And the cooling air, integrated in an assembly and installed below the laundry drum as a base module in the bottom area of the tumble dryer.
  • components such as the drive motor, the fan for the cooling and process air, the condenser, the condensate drip tray and the pump and facilities for conveying and guiding the process - And the cooling air, integrated in an assembly and installed below the laundry drum as a base module in the bottom area of the tumble dryer.
  • Such a base module must be dimensioned so that it can accommodate the components, and have sufficient mechanical stability to keep the built-in components safely.
  • the function modules and built-in components are to be designed and arranged in such a way that their function can be used as effectively as possible in the operation of the laundry dryer.
  • the closed system of the process air circulation must be sealed with the least possible resistance to air flow in such a way that energy losses and the escape of moisture are avoided.
  • the separation points to the bearing plate which serves, inter alia, for front storage of the laundry drum, and the back-sided process air duct, in which usually the heating coil is arranged to make as tight as possible.
  • sealing rings or sealing collars are used at the separation points of the assemblies.
  • the connections are mechanically secured, for example by means of screw connections, so that they withstand the continuous loads during long-term operation.
  • the functional parts are fixedly mounted on a support unit engaging the bottom surface of the dryer.
  • the housings for the fan wheels of the cooling and process air streams are arranged symmetrically on both sides of the motor.
  • the housing for the fan wheels each consist of two shells, which are connected to each other by means of a film hinge.
  • the lower housing shells are mounted on the support unit. After mounting the motor and inserting the fan wheels, the two hinged tops are connected by simple pivoting movement with the lower parts and closed the fan housing in this way.
  • the cited document shows laterally attached to the condenser louvers for guiding the process air and for the separation of cooling and process air flow. To seal these guide devices so that a mixing of process and cooling air and leakage of moisture are prevented in the installation space of the dryer is possible only with great effort.
  • a slot for a floor module with allegedly improved air flow is known.
  • the cooling air inlet and outlet openings are located in the front area of the tumble dryer.
  • the floor module is inserted as a preassembled module from the front into the frame of the housing and fastened there.
  • the bottom module incorporates mounts for the condenser, the cooling air fan and the process air fan, as well as air guiding devices and air ducts for the cooling air and process air ducts.
  • the front-side process air duct section is placed from above, its separation point is approximately horizontally aligned.
  • Mechanical stability is the tumble dryer by the self-supporting housing in frame design.
  • the combination of metal frame and plastic bottom part is material-intensive and makes due to the connection technique difficulties in mounting.
  • a self-supporting, designed as part of the overall support structure floor assembly is also known from DE 31 35 292 C2. This assembly is made of plastic and is - -
  • the invention has for its object to provide for a condensation dryer of the type mentioned a suitable as a support body base module, which has a high stability while maintaining the necessary functions and realizes a streamlined and dense process air. It is also an object of the invention with the new construction to allow a more efficient production of the condensation ons tumble dryer.
  • the base module is designed as a compact, uniform plastic body for all components mentioned and has interfaces for connection to front and rear components, each substantially in lie at least one vertical plane or in at least two stages offset from each other vertical planes.
  • the base module serving to receive the functional parts and components of the air duct is additionally designed as part of the supporting structure.
  • the base module has vertical separating surfaces to the front-side end shield and to the rear process air cover.
  • the dividing surfaces are designed over a large area and preferably extend over the entire width of the tumble dryer.
  • the process air flow through the base module takes place via the heat exchanger, which rests against the output of its receiving space against a shock and seamless contact surface in the base module.
  • the heat exchanger receiving space is designed as a cooling air duct and, like the housing for the cooling air blower, closed by a latched lid. With the latched lids for the cooling air flow completely sufficient tightness can be produced. Even at these junctions can therefore be dispensed with the use of sealants.
  • the base module according to the invention in terms of its mechanical strength as a unitary plastic body and as part of the entire support structure, in terms of effective management of the air flows and the production of the items and their assembly in the final assembly considerable advantages achieved.
  • Fig. 1 the base module of a condensation dryer according to the invention in perspective
  • Fig. 2 shows a heat exchanger for insertion into its receiving space.
  • the base module 7 is a compact plastic body produced by injection molding, which is given a high rigidity by its shape and additionally molded-in ribs 17 in the bottom area (not visible) and on the sides.
  • a receiving space 18 for the heat exchanger 2 of the capacitor 8, and further receiving means for the drive motor and the fan wheels of the process and the cooling air blower 11 are formed.
  • the base module 7 is completed by a cover 10, which closes the heat exchanger receiving space 8 upwards, and a second cover 1, which forms the housing for the cooling air blower together with the lower part formed in the base module.
  • the base module 7 has a very high strength, it is resistant to bending and torsion.
  • the basic module 7 occupies the entire width of the tumble dryer and forms in the lower part of the device a lateral framework for bolted side walls (not shown).
  • the base module 7 is designed shortened in depth and has to the front and back side adjoining components vertical dividing surfaces 19, 20.
  • the base module 7 is locked and screwed together with the composite body formed from end shield 6 and front wall 4 and welded on the back to the process air cover 14, which also has ribs 21 on its outside for stabilization.
  • the front and the rear parting surface of the base module 7 are each in a vertical plane and are designed to be as large as possible, which gives the compounds to the bearing plate 6 and the process air cover 14 so high stability that the dryer without the use of conventional support structures all acting mechanical see loads during operation and during transport.
  • the process air flows through the base module 7 in the heat exchanger 2 from front to back.
  • the connection is sealed by a ring seal 15, which is attached to the heat exchanger 2.
  • the tightness of the process air duct is produced by a second ring seal 16, which is attached circumferentially to the heat exchanger 2 and rests against the boundary boundary of the process air opening 13 formed in the end shield 6 when the heat exchanger 2 is inserted and locked.
  • the cooling air is sucked in by the cooling air blower through the air inlet opening 12 in the front wall 4 of the tumble dryer, flows through the heat exchanger 2 in the receiving space 18 transversely to the direction of the process air flow and is led from there further out through an air outlet opening, not shown, into the surrounding space.
  • the cooling air is guided in the region of the cooling air blower and the receiving space 18 by a cover 1 on the cooling air blower and 10 on the receiving space 18. Both covers 1, 10 are placed from above and locked by vertical pressure with the base module 7.
  • the cover 10 for the receiving space 18 is flush with the outer surface of the base module 7.
  • the shape of the lid opening and the locking means are so designed so that the stiffness of the base module 7 is additionally reinforced with the joined cover 10. Without the use of additional sealing means sufficient for the cooling air flow tightness is produced by the locking connection.
  • the use of the cover 1, 10 as manufacturing items is technologically conditioned, since the spaces for the cooling air blower and the receiving space 18 with the base module 7 can not be made in one piece. Otherwise, neither a condensate collecting tray, nor a condensate pump or the cooling air impeller (all not shown here) would be mountable.
  • the division of the base module 7 in the necessary minimum number of items has been made in accordance with the invention so that only areas of the cooling air duct are joined. In this way, the constraints and limitations resulting from assembly requirements remain without detrimental effect on the tightness of the process air duct and on the function of the entire tumble dryer.

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

Abstract

The invention relates to a base module (7) for a condenser tumble dryer, said module housing the functional parts and air conduction components and additionally being configured as part of the support structure of the tumble dryer. The base module (7) comprises perpendicular joint faces (19) in relation to the front end shield (6) and the rear process air cover (14). Said joint faces lie essentially on at least one perpendicular plane or on at least two perpendicular planes that are offset in a staggered manner in relation to one another, have a large surface area and preferably extend over the entire width of the tumble dryer. In comparison to known embodiments, the proposed base module has significant advantages in terms of its mechanical stability as an individual structural component and as part of the entire support structure and in terms of the effective conduction of the air streams, the production of the individual parts and the assembly of the final module.

Description

- - - -
Kondensations-WäschetrocknerCondensation Dryer
Die Erfindung betrifft dem Oberbegriff des Patentanspruchs 1 einen Kondensations- Wäschetrockner mit Aufnahmeeinrichtungen für folgende Komponenten - einen luftgekühlten Kondensator mit Wärmetauscher, einen Antriebsmotor für eine Wäschetrommel und für Gebläse für die Prozessluft und die Kühlluft,The invention relates to the preamble of claim 1 a condensation dryer with receiving devices for the following components - an air-cooled condenser with heat exchanger, a drive motor for a laundry drum and blower for the process air and the cooling air,
Kanäle und Leiteinrichtungen für beide Luftströme, eine Kondensatauffangschale und - eine Kondensatpumpe, und mit einem aus Kunststoff gefertigten und als Teil der Tragkonstruktion des Wäschetrockners dienenden Basismodul, in das die vorgenannten Aufnahmeeinrichtungen eingeformt sind.Channels and diffusers for both air streams, a condensate drip tray and - a condensate pump, and with a made of plastic and serving as part of the support structure of the tumble base module, in which the aforementioned receiving means are formed.
Ein solcher Kondensations-Wäschetrockner hat eine wenigstens annähernd waagerecht ausgerichtete und drehbar gelagerte Wäschetrommel, zwei getrennte Systeme für den Kühlluft- und den Prozessluftstrom, einen Motor zum Antrieb der Gebläse und der Wäschetrommel, einen elektrischen Heizkörper zum Aufheizen der Prozessluft, einen Kondensator mit einem Wärmetauscher, in dem die Prozessluft abgekühlt und die vom Trockengut aufgenommene Feuchtigkeit durch Kondensation entzogen wird, und Einrichtun- gen zum Abführen des Kondensats.Such a condensation dryer has an at least approximately horizontally oriented and rotatably mounted laundry drum, two separate systems for the cooling air and the process air flow, a motor for driving the blower and the laundry drum, an electric heater for heating the process air, a condenser with a heat exchanger in which the process air is cooled and the moisture absorbed by the dry material is removed by condensation, and devices for removing the condensate.
Kondensations-Wäschetrockner zeichnen sich durch einen in sich geschlossenen Kreislauf der Prozessluftführung aus. Während eines Trocknungsprozesses wird das zu trocknende Gut in der drehbaren Trommel bewegt und mit der aufgeheizten Prozessluft beaufschlagt, die durch Öffnungen in der Trommelrückwand eingeblasen wird und die Wäsche- trommel etwa axial von der Trommelrückwand her nach vorn durchströmt. Über ein FIu- sensieb im Bereich der Beschickungsöffnung gelangt die Prozessluft in den Kondensator, wo durch von außen angesaugte Kühlluft die Prozessluft im Wärmetauscher abgekühlt wird und die vom Trockengut aufgenommene Feuchtigkeit kondensiert. Das in einen Sammelbehälter aufgefangene Kondensat wird mittels einer Pumpe abgeführt. Die im - -Condensing clothes dryers are characterized by a self-contained cycle of process air guidance. During a drying process, the material to be dried is moved in the rotatable drum and charged with the heated process air, which is blown through openings in the drum rear wall and flows through the laundry drum approximately axially from the drum rear wall ago. The process air enters the condenser via a fuel screen in the area of the feed opening, where the process air in the heat exchanger is cooled by the cooling air drawn in from outside and the moisture absorbed by the dry material condenses. The collected in a sump condensate is removed by a pump. The im - -
Wärmetauscher abgekühlte und entfeuchtete Prozessluft wird über die Heizvorrichtung wieder ins Trommelinnere befördert. Die Kühl- und die Prozessluft durch je ein Gebläse gefördert, die gewöhnlicherweise über den Antriebsmotor der Wäschetrommel angetrieben werden.Heat exchanger cooled and dehumidified process air is transported via the heater back into the drum interior. The cooling and the process air conveyed by a blower, which are usually driven by the drive motor of the laundry drum.
Bei bekannten Wäschetrocknern werden vornehmlich aus Platzgründen eine Reihe der betriebsnotwendigen Funktionsbaugruppen und Einbauteile (Komponenten), wie der Antriebsmotor, die Gebläse für die Kühl- und Prozessluft, der Kondensator, die Kondensatauffangschale und die -pumpe sowie Einrichtungen zum Fördern und Führen der Pro- zess- und der Kühlluft, in einer Baugruppe integriert und unterhalb der Wäschetrommel als Basismodul im Bodenbereich des Wäschetrockners installiert.In known tumble driers, primarily for reasons of space, a number of operationally required functional assemblies and components (components), such as the drive motor, the fan for the cooling and process air, the condenser, the condensate drip tray and the pump and facilities for conveying and guiding the process - And the cooling air, integrated in an assembly and installed below the laundry drum as a base module in the bottom area of the tumble dryer.
Ein solches Basismodul muss so dimensioniert sein, dass es die Bauteile aufnehmen kann, und eine ausreichende mechanische Stabilität aufweisen, um die eingebauten Bauteile sicher zu halten. Die Funktionsbaugruppen und Einbauteile sind so auszubilden und zueinander anzuordnen, dass deren Funktion möglichst effektiv im Betrieb des Wä- schetrockners eingesetzt werden kann. Das geschlossene System des Prozessluftkreislaufs ist bei einer möglichst widerstandsarmen Luftführung so abzudichten, dass Energieverluste und der Austritt von Feuchtigkeit vermieden werden. Dazu sind neben einer entsprechenden Luftführung im Basismodul insbesondere die Trennstellen zum Lagerschild, der unter anderem zur frontseitigen Lagerung der Wäschetrommel dient, und zum rück- seitigen Prozessluftkanal, in dem für gewöhnlich das Heizregister angeordnet ist, möglichst dicht zu gestalten. Üblicherweise werden dazu an den Trennstellen der Baugruppen Dichtringe oder Dichtmanschetten eingesetzt. Die Verbindungen sind beispielsweise mittels Verschraubungen mechanisch so gesichert, dass sie den Dauerbelastungen im Langzeitbetrieb standhalten.Such a base module must be dimensioned so that it can accommodate the components, and have sufficient mechanical stability to keep the built-in components safely. The function modules and built-in components are to be designed and arranged in such a way that their function can be used as effectively as possible in the operation of the laundry dryer. The closed system of the process air circulation must be sealed with the least possible resistance to air flow in such a way that energy losses and the escape of moisture are avoided. For this purpose, in addition to a corresponding air guide in the base module in particular the separation points to the bearing plate, which serves, inter alia, for front storage of the laundry drum, and the back-sided process air duct, in which usually the heating coil is arranged to make as tight as possible. Usually, sealing rings or sealing collars are used at the separation points of the assemblies. The connections are mechanically secured, for example by means of screw connections, so that they withstand the continuous loads during long-term operation.
Neben den funktionalen Anforderungen sind bei der Konstruktion eines Basismoduls Aspekte der rationellen Fertigung zu berücksichtigen und gegebenenfalls gegeneinander abzuwägen. Dies betrifft insbesondere die Fertigung der Einzelteile, die überwiegend aus Kunststoff im Spritzgussverfahren hergestellt werden, aber auch die Fügefähigkeit in der Endmontage.In addition to the functional requirements, aspects of rational production must be taken into account in the design of a basic module and, if necessary, balanced against each other. This applies in particular to the manufacture of the individual parts, which are mainly made of plastic by injection molding, but also the ability to join in final assembly.
Aus dem Stand der Technik sind abhängig von Zielsetzung und schwerpunktmäßiger Ausrichtung unterschiedliche Lösungen für derartige Basismodule bekannt geworden. - -Depending on the objective and focus orientation, different solutions for such base modules have become known from the prior art. - -
Bei einer in EP 0 434 169 A2 beschriebenen Bodenbaugruppe sind die Funktionsteile auf einer die Bodenfläche des Trockners einnehmenden Trageeinheit fest montiert. Die Gehäuse für die Lüfterräder des Kühl- und des Prozessluftstromes sind auf beiden Seiten des Motors symmetrisch angeordnet. Die Gehäuse für die Lüfterräder bestehen jeweils aus zwei Schalen, die mittels eines Filmscharniers miteinander verbunden sind. Die unteren Gehäuseschalen sind an die Trageeinheit montiert. Nach der Montage des Motors und Einsetzen der Lüfterräder werden die beiden klappbaren Oberteile durch einfache Schwenkbewegung mit den Unterteilen verbunden und die Lüftergehäuse auf diese Weise verschlossen.In a floor assembly described in EP 0 434 169 A2, the functional parts are fixedly mounted on a support unit engaging the bottom surface of the dryer. The housings for the fan wheels of the cooling and process air streams are arranged symmetrically on both sides of the motor. The housing for the fan wheels each consist of two shells, which are connected to each other by means of a film hinge. The lower housing shells are mounted on the support unit. After mounting the motor and inserting the fan wheels, the two hinged tops are connected by simple pivoting movement with the lower parts and closed the fan housing in this way.
Wenn auch die zur Luftführung verwendeten Einzelteile noch einfach zu montieren sind, so ist doch die Einhaltung einer ausreichend guten Dichtheit der Luftkanäle bei der beschriebenen Bauweise eher problematisch. Dies gilt insbesondere für die Prozessluftführung aber auch für die Lüftergehäuse und die Kondensatoraufnahme.Although the items used for air flow are still easy to assemble, but the maintenance of a sufficiently good tightness of the air ducts in the described construction rather problematic. This applies in particular to the process air supply but also to the fan housing and the capacitor holder.
Die zitierte Druckschrift zeigt seitlich am Kondensator befestigte Luftleiteinrichtungen zur Führung der Prozessluft und zur Trennung von Kühl- und Prozessluftstrom. Diese Leiteinrichtungen so abzudichten, dass eine Vermischung von Prozess- und Kühlluft und ein Austreten von Feuchtigkeit in den Aufstellungsraum des Trockners unterbunden werden, ist nur mit größerem Aufwand möglich.The cited document shows laterally attached to the condenser louvers for guiding the process air and for the separation of cooling and process air flow. To seal these guide devices so that a mixing of process and cooling air and leakage of moisture are prevented in the installation space of the dryer is possible only with great effort.
Aus DE 102 02 442 A1 ist ein Einschub für ein Bodenmodul mit angeblich verbesserter Luftführung bekannt. Die Kühllufteintritts- und -austrittsöffnungen befinden sich im Frontbereich des Wäschetrockners. Das Bodenmodul wird als vormontierte Baugruppe von vorn her in den Rahmen des Gehäuses eingeschoben und dort befestigt. Im Bodenmodul sind Aufnahmen für den Kondensator, das Kühlluft- und das Prozessluftgebläse sowie Luftleiteinrichtungen und Luftführungskanäle für die Kühlluft- und die Prozessluftführung integriert. Der frontseitige Prozessluftkanalabschnitt wird von oben aufgesetzt, seine Trennstelle ist etwa waagerecht ausgerichtet. Mechanische Stabilität soll der Wäschetrockner durch das selbsttragende Gehäuse in Rahmenbauweise erhalten. Die Kombination aus Metallrahmen und Kunststoffbodenteil ist jedoch materialintensiv und macht aufgrund der Verbindungstechnik Schwierigkeiten bei der Montage.From DE 102 02 442 A1 a slot for a floor module with allegedly improved air flow is known. The cooling air inlet and outlet openings are located in the front area of the tumble dryer. The floor module is inserted as a preassembled module from the front into the frame of the housing and fastened there. The bottom module incorporates mounts for the condenser, the cooling air fan and the process air fan, as well as air guiding devices and air ducts for the cooling air and process air ducts. The front-side process air duct section is placed from above, its separation point is approximately horizontally aligned. Mechanical stability is the tumble dryer by the self-supporting housing in frame design. However, the combination of metal frame and plastic bottom part is material-intensive and makes due to the connection technique difficulties in mounting.
Eine selbsttragende, als Teil der Gesamt-Tragkonstruktion ausgebildete Bodenbaugruppe ist auch aus DE 31 35 292 C2 bekannt. Diese Baugruppe besteht aus Kunststoff und ist - -A self-supporting, designed as part of the overall support structure floor assembly is also known from DE 31 35 292 C2. This assembly is made of plastic and is - -
als ein den Bodenbereich des Wäschetrockners ganzflächig ausfüllendes Sockelteil gestaltet, das zusammen mit einem übereinander angeordneten Zwischenboden und einem Oberteil den Tragkörper bilden. In diesem Sockelteil sind Aufnahmen für die Funktionsteile und für Einrichtungen zur Führung der Prozess- und der Kühlluft eingeformt. Dieses Sockelteil gehört zur Tragkonstruktion des Gerätes und ersetzt im Bodenbereich sonst gebräuchliche Querstreben und Halteschienen. Zur Anbindung an das aus einem Rahmen gebildete Gehäuse sind in dem Sockelteil Eckpfosten eingeformt, die mit den senkrechten Eckprofilen des Rahmens gefügt werden. Diese Kombination aus Metallrahmen und Kunststoffbodenteil ist sehr materialintensiv und stößt auf Montageprobleme bei der Verbindung der Tragkonstruktion und der Luftkanäle.designed as a bottom portion of the tumble dryer over the entire surface filling base part, which together with a stacked intermediate bottom and an upper part form the support body. In this base part receptacles for the functional parts and facilities for guiding the process and the cooling air are formed. This base part is part of the supporting structure of the device and replaces the usual cross braces and retaining rails in the floor area. For connection to the housing formed from a frame corner posts are formed in the base part, which are joined to the vertical corner profiles of the frame. This combination of metal frame and plastic bottom part is very material-intensive and encounters mounting problems in the connection of the support structure and the air ducts.
Den vorbeschriebenen Lösungen ist darüber hinaus der Nachteil gemeinsam, dass an den Trennstellen der zu fügenden Bauteile, insbesondere an den Trennstellen der Prozessluftführung, zusätzliche Dichtungen eingesetzt werden müssen, um Energieverluste und den Austritt von Feuchtigkeit zu verhindern.The above-described solutions also have the common disadvantage that at the separation points of the components to be joined, in particular at the separation points of the process air duct, additional seals must be used to prevent energy loss and the escape of moisture.
Der Erfindung liegt die Aufgabe zugrunde, für einen Kondensations-Wäschetrockner der eingangs genannten Art ein als Tragkörper geeignetes Basismodul anzugeben, das bei Einhaltung der notwendigen Funktionen eine hohe Stabilität aufweist und eine strömungsgünstige und dichte Prozessluftführung realisiert. Es ist auch Aufgabe der Erfindung mit der neuen Konstruktion eine insgesamt rationellere Fertigung des Kondensati- ons-Wäschetrockners zu ermöglichen.The invention has for its object to provide for a condensation dryer of the type mentioned a suitable as a support body base module, which has a high stability while maintaining the necessary functions and realizes a streamlined and dense process air. It is also an object of the invention with the new construction to allow a more efficient production of the condensation ons tumble dryer.
Die Aufgabe der Erfindung wird durch die im Kennzeichen des Anspruches 1 genannten Merkmale in der Weise gelöst, dass das Basismodul als kompakter, einheitlicher Kunststoffkörper für alle genannten Komponenten ausgebildet ist und zur Anbindung an front- und rückseitigen Bauteile Trennflächen aufweist, die jede im Wesentlichen in mindestens einer senkrechten Ebene oder in mindestens zwei stufig gegeneinander versetzten senkrechten Ebenen liegen.The object of the invention is achieved by the features mentioned in the characterizing part of claim 1 in such a way that the base module is designed as a compact, uniform plastic body for all components mentioned and has interfaces for connection to front and rear components, each substantially in lie at least one vertical plane or in at least two stages offset from each other vertical planes.
Erfindungsgemäß ist das zur Aufnahme der Funktionsteile und Komponenten der Luftführung dienende Basismodul zusätzlich als Teil der Tragkonstruktion ausgebildet. Dazu weist das Basismodul senkrechte Trennflächen zum frontseitigen Lagerschild und zum rückseitigen Prozessluftdeckel auf. Die Trennflächen sind großflächig ausgeführt und erstrecken sich vorzugsweise über die gesamte Breite des Wäschetrockners. Erfindungs- - -According to the invention, the base module serving to receive the functional parts and components of the air duct is additionally designed as part of the supporting structure. For this purpose, the base module has vertical separating surfaces to the front-side end shield and to the rear process air cover. The dividing surfaces are designed over a large area and preferably extend over the entire width of the tumble dryer. Inventions - -
wesentlich ist auch, dass die Baugruppen ohne Dichtmittel gefügt und verbunden werden. Die Prozessluftführung durch das Basismodul erfolgt über den Wärmetauscher, der am Ausgang seines Aufnahmeraums gegen eine stoß- und nahtfreie Anlagefläche im Basismodul anliegt. Der Wärmetauscher-Aufnahmeraum ist als Kühlluftführungskanal ausgebil- det und ebenso wie das Gehäuse für das Kühlluftgebläse durch einen aufgerasteten Deckel abgeschlossen. Mit den aufgerasteten Deckeln ist eine für die Kühlluftführung völlig ausreichende Dichtigkeit herstellbar. Auch an diesen Verbindungsstellen kann daher auf den Einsatz von Dichtmitteln verzichtet werden.It is also essential that the assemblies are joined and joined without sealant. The process air flow through the base module takes place via the heat exchanger, which rests against the output of its receiving space against a shock and seamless contact surface in the base module. The heat exchanger receiving space is designed as a cooling air duct and, like the housing for the cooling air blower, closed by a latched lid. With the latched lids for the cooling air flow completely sufficient tightness can be produced. Even at these junctions can therefore be dispensed with the use of sealants.
Gegenüber den vorbeschriebenen bekannten Lösungen sind mit dem erfindungsgemäßen Basismodul in Bezug auf seine mechanische Festigkeit als einheitlicher Kunststoffkörper und als ein Teil der gesamten Tragkonstruktion, in Bezug auf eine effektive Führung der Luftströme sowie der Herstellung der Einzelteile und deren Zusammenbau in der Endmontage erhebliche Vorteile erzielbar.Compared to the above-described known solutions are with the base module according to the invention in terms of its mechanical strength as a unitary plastic body and as part of the entire support structure, in terms of effective management of the air flows and the production of the items and their assembly in the final assembly considerable advantages achieved.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen enthalten, die in beliebiger Kombination miteinander angewendet werden können, ohne die Erfindung zu verlassen.Advantageous embodiments of the invention are contained in the dependent claims, which can be used in any combination with each other, without departing from the invention.
Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels werden die Erfindung und ihre Vorteile im Folgenden näher erläutert. In der Zeichnung zeigenReference to an embodiment shown in the drawing, the invention and its advantages are explained in more detail below. In the drawing show
Fig. 1 das Basismodul eines erfindungsgemäßen Kondensations-Wäschetrockner in Perspektivdarstellung undFig. 1, the base module of a condensation dryer according to the invention in perspective and
Fig. 2 einen Wärmetauscher zum Einsetzen in seinen Aufnahmeraum.Fig. 2 shows a heat exchanger for insertion into its receiving space.
Das Basismodul 7 ist ein im Spritzgussverfahren hergestellter kompakter Kunststoffkörper, der durch seine Formgebung sowie durch zusätzlich eingeformte Rippen 17 im Bodenbereich (nicht sichtbar) und an den Seiten eine hohe Steifigkeit erhält. In das Basis- modul sind ein Aufnahmeraum 18 für den Wärmetauscher 2 des Kondensators 8, und weitere Aufnahmeeinrichtungen für den Antriebsmotor und die Lüfterräder des Prozess- und des Kühlluftgebläses 11 eingeformt. Das Basismoduls 7 wird komplettiert durch einen Deckel 10, der den Wärmetauscher-Aufnahmeraum 8 nach oben verschließt, und einen zweiten Deckel 1 , der zusammen mit dem im Basismodul eingeformten Unterteil das Ge- häuse für das Kühlluftgebläse bildet. - -The base module 7 is a compact plastic body produced by injection molding, which is given a high rigidity by its shape and additionally molded-in ribs 17 in the bottom area (not visible) and on the sides. In the base module, a receiving space 18 for the heat exchanger 2 of the capacitor 8, and further receiving means for the drive motor and the fan wheels of the process and the cooling air blower 11 are formed. The base module 7 is completed by a cover 10, which closes the heat exchanger receiving space 8 upwards, and a second cover 1, which forms the housing for the cooling air blower together with the lower part formed in the base module. - -
Auch ohne bekannte Unterkonstruktionen oder versteifende Tragwinkel und -schienen weist das Basismodul 7 eine sehr hohe Festigkeit auf, es ist biege- und verwindungssteif. Das Basismodul 7 nimmt die gesamte Breite des Wäschetrockners ein und bildet im unteren Bereich des Gerätes ein seitliches Gerüst für angeschraubte Seitenwände (nicht dar- gestellt). Abweichend zu bekannten Wäschetrocknern ist das Basismodul 7 in der Tiefe verkürzt ausgelegt und weist zu den front- und rückseitig anschließenden Bauteilen senkrechte Trennflächen 19, 20 auf. Frontseitig wird das Basismodul 7 mit dem aus Lagerschild 6 und Frontwand 4 gebildeten Verbundkörper verrastet und verschraubt und auf der Rückseite mit dem Prozessluftdeckel 14 verschweißt, der zur Stabilisierung ebenfalls Rip- pen 21 an seiner Außenseite aufweist.Even without known substructures or stiffening support brackets and rails, the base module 7 has a very high strength, it is resistant to bending and torsion. The basic module 7 occupies the entire width of the tumble dryer and forms in the lower part of the device a lateral framework for bolted side walls (not shown). Notwithstanding known clothes dryers, the base module 7 is designed shortened in depth and has to the front and back side adjoining components vertical dividing surfaces 19, 20. On the front side, the base module 7 is locked and screwed together with the composite body formed from end shield 6 and front wall 4 and welded on the back to the process air cover 14, which also has ribs 21 on its outside for stabilization.
Die vordere und die rückseitige Trennfläche des Basismoduls 7 liegen in je einer senkrechten Ebene und sind flächig möglichst groß ausgelegt, was den Verbindungen zum Lagerschild 6 und zum Prozessluftdeckel 14 eine so hohe Stabilität verleiht, dass der Wäschetrockner ohne den Einsatz üblicher Tragkonstruktionen allen einwirkenden mechani- sehen Belastungen beim Betrieb und beim Transport standhält.The front and the rear parting surface of the base module 7 are each in a vertical plane and are designed to be as large as possible, which gives the compounds to the bearing plate 6 and the process air cover 14 so high stability that the dryer without the use of conventional support structures all acting mechanical see loads during operation and during transport.
Die Prozessluft durchströmt das Basismodul 7 im Wärmetauscher 2 von vorn nach hinten. Dazu weist der Aufnahmeraum 18 im Basismodul 7 rückseitig innen eine naht- und stoßfreie Anlagefläche auf, gegen die der eingeführte und verriegelte Wärmetauscher 2 druckbeaufschlagt anliegt. Die Verbindung wird abgedichtet durch eine Ringdichtung 15, die am Wärmetauscher 2 befestigt ist. Frontseitig wird die Dichtheit der Prozessluftführung durch eine zweite am Wärmetauscher 2 umfänglich angebrachte Ringdichtung 16 hergestellt, die bei eingeschobenem und verriegelten Wärmetauscher 2 an der Randbegrenzung der im Lagerschild 6 eingeformten Prozessluftöffnung 13 anliegt.The process air flows through the base module 7 in the heat exchanger 2 from front to back. For this purpose, the receiving space 18 in the base module 7 on the back inside a seamless and shock-free contact surface against which the imported and locked heat exchanger 2 is applied pressurized. The connection is sealed by a ring seal 15, which is attached to the heat exchanger 2. On the front side, the tightness of the process air duct is produced by a second ring seal 16, which is attached circumferentially to the heat exchanger 2 and rests against the boundary boundary of the process air opening 13 formed in the end shield 6 when the heat exchanger 2 is inserted and locked.
Die Kühlluft wird von dem Kühlluftgebläse durch die Lufteintrittsöffnung 12 in der Front- wand 4 des Wäschetrockners angesaugt, durchströmt den Wärmetauscher 2 im Aufnahmeraum 18 quer zur Richtung des Prozessluftstromes und wird von dort weiter durch eine nicht dargestellte Luftaustrittsöffnung nach außen in den Umgebungsraum geleitet. Die Kühlluft wird im Bereich des Kühlluftgebläses und des Aufnahmeraums 18 durch je einen Deckel 1 am Kühlluftgebläse und 10 am Aufnahmeraum 18 geführt. Beide Deckel 1 , 10 sind von oben aufgesetzt und durch senkrechte Druckausübung mit dem Basismodul 7 verrastet. Der Deckel 10 für den Aufnahmeraum 18 schließt mit der Außenfläche des Basismoduls 7 bündig ab. Die Ausformung der Deckelöffnung und die Rastmittel sind so ausgelegt, dass mit dem gefügten Deckel 10 die Steifigkeit des Basismoduls 7 zusätzlich verstärkt wird. Ohne die Verwendung zusätzlicher Dichtungsmittel wird durch die Rastverbindung eine für die Kühlluftführung ausreichende Dichtheit hergestellt.The cooling air is sucked in by the cooling air blower through the air inlet opening 12 in the front wall 4 of the tumble dryer, flows through the heat exchanger 2 in the receiving space 18 transversely to the direction of the process air flow and is led from there further out through an air outlet opening, not shown, into the surrounding space. The cooling air is guided in the region of the cooling air blower and the receiving space 18 by a cover 1 on the cooling air blower and 10 on the receiving space 18. Both covers 1, 10 are placed from above and locked by vertical pressure with the base module 7. The cover 10 for the receiving space 18 is flush with the outer surface of the base module 7. The shape of the lid opening and the locking means are so designed so that the stiffness of the base module 7 is additionally reinforced with the joined cover 10. Without the use of additional sealing means sufficient for the cooling air flow tightness is produced by the locking connection.
Der Einsatz der Deckel 1, 10 als Fertigungseinzelteile ist technologisch bedingt, da die Räume für das Kühlluftgebläse und den Aufnahmeraum 18 mit dem Basismodul 7 nicht einstückig hergestellt werden können. Andernfalls wäre weder eine Kondensatauffangschale, noch eine Kondensatpumpe oder das Kühlluft-Gebläserad (alle hier nicht dargestellt) montierbar. Die Aufteilung des Basismoduls 7 in die nötige Mindestanzahl von Einzelteilen ist nach Maßgabe der Erfindung so vorgenommen worden, dass ausschließlich Bereiche der Kühlluftführung gefügt werden. Auf diese Weise bleiben die sich aus Montageerfordernissen ergebenden Zwänge und Einschränkungen ohne nachteilige Auswirkung auf die Dichtheit des Prozessluftkanals und auf die Funktion des gesamten Wäschetrockners.The use of the cover 1, 10 as manufacturing items is technologically conditioned, since the spaces for the cooling air blower and the receiving space 18 with the base module 7 can not be made in one piece. Otherwise, neither a condensate collecting tray, nor a condensate pump or the cooling air impeller (all not shown here) would be mountable. The division of the base module 7 in the necessary minimum number of items has been made in accordance with the invention so that only areas of the cooling air duct are joined. In this way, the constraints and limitations resulting from assembly requirements remain without detrimental effect on the tightness of the process air duct and on the function of the entire tumble dryer.
Wesentliche Vorteile ergeben sich aus der Anwendung der Erfindung auch bei der End- montage des Wäschetrockners. Die Anzahl der zu montierenden Einzelteile ist minimal, insbesondere durch Vermeidung von Dichtelementen an den Trennflächen der Baugruppen. Diese Trennflächen sind sehr eben ausführbar und bilden - miteinander gefügt - sehr dicht aufeinander liegende Flächen, die jegliche zusätzliche Maßnahme zur Abdichtung entbehrlich machen. Das Bestücken des Basismoduls 7 mit den Funktionsteilen für die Gebläse, Auffangschale und Kondensatpumpe und das Aufsetzen und Verrasten der Deckel 1, 10 sind leicht auszuführende Arbeitsgänge. Significant advantages result from the application of the invention also in the final assembly of the tumble dryer. The number of items to be assembled is minimal, especially by avoiding sealing elements on the parting surfaces of the modules. These parting surfaces are very level executable and form - joined together - very close together surfaces that make any additional measures for sealing unnecessary. The loading of the base module 7 with the functional parts for the fan, drip tray and condensate pump and the placement and locking the lid 1, 10 are easy to perform operations.
- -- -
Bezugszeichenreference numeral
Deckel für Kühlluftgebläse Wärmetauscher Flusensieb Frontwand Rückwand Lagerschild Basismodul Kondensator Wärmetauscher-Einschuböffnung Deckel für Kondensatorgehäuse Prozess- und Kühlluftgebläse Kühllufteintrittsöffnung Prozessluftkanalöffnung Prozessluftdeckel erste Dichtmanschette zweite Dichtmanschette Rippen am Kondensatorgehäuse Wärmetauscher-Aufnahmeraum Trennfläche am Basismodul Trennfläche an Frontbaugruppe Rippen am Prozessluftdeckel Cover for cooling air fan Heat exchanger Fluff filter Front wall Rear wall End plate Basic module Condenser Heat exchanger inlet opening Cap for condenser housing Process and cooling air fan Cooling air inlet Process air duct opening Process air cover First sealing collar Second sealing collar Ribs on condenser housing Heat exchanger receiving space Separating surface on base module Separating surface on front module Ribs on process air cover

Claims

- -Patentansprüche - Patent claims
1. Kondensations-Wäschetrockner mit Aufnahmeeinrichtungen für folgende Komponenten - einen luftgekühlten Kondensator (8) mit Wärmetauscher (2), einen Antriebsmotor für eine Wäschetrommel und für Gebläse (11 ) für die Prozessluft und die Kühlluft, Kanäle und Leiteinrichtungen für beide Luftströme, eine Kondensatauffangschale und - eine Kondensatpumpe, und mit einem aus Kunststoff gefertigten und als Teil der Tragkonstruktion des Wäschetrockners dienenden Basismodul (7), in das die vorgenannten Aufnahmeeinrichtungen eingeformt sind, dadurch gekennzeichnet, dass das Basismodul (7) als kompakter, einheitlicher Kunststoffkörper für alle genannten Kompo- nenten ausgebildet ist und zur Anbindung an front- und rückseitigen Bauteile (6,A condensation dryer with receptacles for the following components - an air-cooled condenser (8) with heat exchanger (2), a drive motor for a laundry drum and fans (11) for the process air and the cooling air, ducts and diffusers for both air streams, a condensate drip tray and - a condensate pump, and with a made of plastic and serving as part of the support structure of the tumble dryer base module (7), in which the aforementioned receiving devices are formed, characterized in that the base module (7) as a compact, uniform plastic body for all mentioned Kompo - Nenten is formed and for connection to front and rear components (6,
5) Trennflächen (19) aufweist, die jede im Wesentlichen in mindestens einer senkrechten Ebene oder in mindestens zwei stufig gegeneinander versetzten senkrechten Ebenen liegen.5) separating surfaces (19), each lying substantially in at least one vertical plane or in at least two stages offset from each other perpendicular vertical planes.
2. Wäschetrockner nach Anspruch 1 , dadurch gekennzeichnet, dass in das Basis- modul (7) vorzugsweise im Boden und in den Seitenflächen Versteifungen und/oder Rippen (17) eingeformt sind.2. Dryer according to claim 1, characterized in that in the base module (7) preferably in the bottom and in the side surfaces stiffeners and / or ribs (17) are formed.
3. Wäschetrockner nach Anspruch 1 , dadurch gekennzeichnet, dass das Basismodul (7) für das Kühlluftgebläse (1 1) und für den Aufnahmeraum (18) des Wärmetauschers (2) je einen Verschlussdeckel (1 , 10) aufweist.3. Dryer according to claim 1, characterized in that the base module (7) for the cooling air blower (1 1) and for the receiving space (18) of the heat exchanger (2) each have a closure cover (1, 10).
4. Wäschetrockner nach Anspruch 1 , dadurch gekennzeichnet, dass das Basismodul (7) mit den front- und rückseitigen Bauteilen (6, 5) über die senkrecht angeordneten Trennflächen (19, 20) dichtungsfrei verbunden ist.4. Dryer according to claim 1, characterized in that the base module (7) with the front and rear components (6, 5) via the vertically arranged separating surfaces (19, 20) is connected without seal.
5. Wäschetrockner nach Anspruch 4, dadurch gekennzeichnet, dass die Trennflächen (19, 20) großflächig sind und sich vorzugsweise über die gesamte Breite des Wäschetrockners erstrecken. - -5. Dryer according to claim 4, characterized in that the separating surfaces (19, 20) are a large area and preferably extend over the entire width of the tumble dryer. - -
6. Wäschetrockner nach Anspruch 1 , dadurch gekennzeichnet, dass der im Basismodul (7) eingeformte Aufnahmeraum (18) für den Wärmetauscher (2) als Kühl- luftführungskanal ausgebildet ist.6. Dryer according to claim 1, characterized in that in the base module (7) formed receiving space (18) for the heat exchanger (2) is designed as a cooling air duct.
7. Wäschetrockner nach Anspruch 6, dadurch gekennzeichnet, dass der Aufnahme- räum (18) ausgangsseitig eine ringförmig umlaufende, stoß- und nahtfreie Anlagefläche aufweist.7. Dryer according to claim 6, characterized in that the receiving space (18) on the output side has an annular peripheral, shock and seamless contact surface.
8. Wäschetrockner nach den Ansprüchen 3 und 6, dadurch gekennzeichnet, dass der im Basismodul (7) eingeformte Aufnahmeraum (18) für den Wärmetauscher (2) durch einen als Einzelteil gefertigten Deckel (10) verschließbar ist, der in ge- fügter Position mit der Außenfläche des Basismoduls (7) vorzugsweise bündig abschließt.8. Dryer according to claims 3 and 6, characterized in that in the base module (7) formed receiving space (18) for the heat exchanger (2) by a manufactured as a single part lid (10) is closed, in the position with the outer surface of the base module (7) is preferably flush.
9. Wäschetrockner nach Anspruch 3 oder 8, dadurch gekennzeichnet, dass der oder die Deckel (1 , 10) zum Zwecke des Fügens vorzugsweise von oben zuführbar und in Betriebsposition durch Verrastung mit dem Basismodul (7) verbunden sind. 9. Dryer according to claim 3 or 8, characterized in that the one or more covers (1, 10) for the purpose of joining preferably from above fed and connected in the operating position by latching with the base module (7).
EP06704226.7A 2005-03-18 2006-01-17 Condenser tumble-dryer Active EP1871945B1 (en)

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DE102005013051A DE102005013051A1 (en) 2005-03-18 2005-03-18 Condensation Dryer
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DE102005013051A1 (en) 2006-09-21
EP1871945B1 (en) 2017-05-03

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