EP0566476A1 - Impeller cleaning for a washing/drying machine - Google Patents

Impeller cleaning for a washing/drying machine Download PDF

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Publication number
EP0566476A1
EP0566476A1 EP93400958A EP93400958A EP0566476A1 EP 0566476 A1 EP0566476 A1 EP 0566476A1 EP 93400958 A EP93400958 A EP 93400958A EP 93400958 A EP93400958 A EP 93400958A EP 0566476 A1 EP0566476 A1 EP 0566476A1
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EP
European Patent Office
Prior art keywords
turbine
blades
water
cleaning
washing
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Granted
Application number
EP93400958A
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German (de)
French (fr)
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EP0566476B1 (en
Inventor
Marie-Gérard Merlet
Daniel Barritaud
Philippe Breger
Jacky Brillanceau
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Esswein SA
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Esswein SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/705—Adding liquids
    • 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 
    • D06F58/22—Lint collecting arrangements

Definitions

  • the present invention relates to a device for cleaning the ventilation circuit of a household appliance dryer and in particular of a washer-dryer machine.
  • Such machines include a ventilated air circulation device, this ventilation being carried out by a turbine.
  • the air flow in which the laundry is brewed will inevitably transport fibers extracted from this load of laundry during the spin phase and / or during the drying phase. These fibers transported by the air flow will deposit or accumulate in different places in the drying circuit. Obstacles or changes of sections of this ventilation circuit favor this phenomenon of fiber deposition which can go as far as the complete obstruction of sections.
  • the rotating turbine and the exhaust duct (called condenser) to the air tank are unavoidable major obstacles since they create air circulation.
  • This phenomenon of deposit of fibers on the turbine can cause important dysfunctions.
  • the turbine is loaded with fibers and loses its aerodynamics.
  • the first consists of incorporating a filter into the air circuit, but this requires regular maintenance at the expense of the user.
  • a second solution is to use water splashes during a spin phase, but this only cleans the areas very close to the tank, in particular it is not possible to reach all areas of the drying circuit.
  • the present invention makes it possible to carry out an effective cleaning of the turbine while avoiding the drawbacks of the existing solutions thanks to a system of solenoid valves making it possible to direct a jet of water tangentially on the blades of the turbine which is simultaneously rotated .
  • the dried fibers accumulated on the turbine blades and in the circuit absorb water, and their mass rises significantly.
  • the rotation of the turbine driven by the motor allows, thanks to the centrifugal force due to the rotation of the turbine, the separation of the fibers and their evacuation with the mixed flow of water and air.
  • the present invention therefore relates to a device for cleaning a ventilation circuit comprising a turbine chamber, a turbine provided with blades and driven by a motor and which is characterized in that it comprises at least one opening opening into the interior of the turbine chamber and diffusing at least one jet of liquid on the turbine while the latter is rotating.
  • the main advantage of this device is that it does not require any additional bulky parts since it integrates perfectly with the already existing device.
  • FIG. 1 represents a sectional view of part of the ventilation circuit provided with the device according to one embodiment of the invention. 'invention.
  • a ventilation circuit can comprise, as in FIG. 1, a turbine chamber 1, a turbine 2 provided with blades 3, and a condenser 4.
  • a communication in order to create a closed ventilation circuit, a communication, not shown in the figure, opens out of the tank preferably in the central part of the turbine chamber.
  • a conduit 7 called "purge channel” connects the bottom of the turbine chamber to a lower part of the condenser 4 (for example) in order to evacuate the water present in the bottom of the turbine chamber due to the spinning or the operation of the invention explained below.
  • the turbine shown in the drawing consists of a disc 2, one face of which is provided with blades 3 perpendicular thereto, but all types of turbines and blades can be used without departing from the scope of the invention,
  • This type of centrifugal impeller is preferably offset from the center of the turbine chamber in order to create an increasingly large volume along the walls (ultimately leading to the condenser) allowing the volume of increasing air centrifuged by the blades on the walls.
  • the turbine 2 is driven in rotation by a motor (not shown in the figure) which can be a synchronous, asynchronous, universal or any other type motor.
  • the blades 3 of the rotating turbine create an air flow which is evacuated by the condenser 4 towards the enclosure containing the load of laundry to be dried (not shown in the figure) according to the dotted lines. This is the operation of the ventilated air circulation device. This air flow is directed into the tank on the heating elements for which it takes care of the calorific power in order to dry the mass of laundry contained in the tank.
  • the invention consists in causing one or more openings 6 diffusing in the turbine chamber one diffusing one or more jets J of liquid (as water for example), and simultaneously rotating the turbine 2 so that the centrifugal force drives the fibers 5 loaded with water in the condenser 4.
  • Fibers that have settled in the ventilation will also take care of the water evacuated from the turbine chamber and be carried away by the air flow.
  • openings diffusing water jets can be fitted at various sensitive points of the circuit.
  • the water jets are directed tangentially to the turbine, that is to say in a plane perpendicular to the planes of the blades, which allows all of the surfaces of the blades to be swept by the water jets at the same time as they are driven by them at first and by the engine at a second time.
  • the water circuit supplying the water jets through the openings can be a circuit parallel to the washing water circuit or an independent circuit. In the latter case, a detergent additive can be added to the water for greater cleaning efficiency of the turbine.
  • This operation of rotating the turbine simultaneously with watering can be controlled manually by the user or automatically for a determined period at the end (or at the beginning) of each drying cycle (or of a certain number of drying cycles) or during each wash filling.
  • a system of valves can prevent the air-water mixture from entering the tank where the laundry is dry.
  • the openings can be controlled by solenoid valves.
  • the present invention applies to laundry drying machines or to washing and drying machines and, more generally to all devices provided with an air ventilation system and of which automatic cleaning is essential.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Abstract

The present invention relates to a device for cleaning the ventilation circuit of an electrical household drying appliance which includes a fan chamber (1), a fan (2) equipped with blades (3) and driven by a motor, and is characterised in that it includes at least one opening emerging inside the fan chamber (1) and spraying at least one liquid jet (J) onto the blades of the fan (2) whilst the latter is rotating. The present invention relates to washing-drying machines. <IMAGE>

Description

La présente invention concerne un dispositif de nettoyage du circuit de ventilation d'un appareil électroménager séchant et notamment d'une machine à linge lavante-séchante.The present invention relates to a device for cleaning the ventilation circuit of a household appliance dryer and in particular of a washer-dryer machine.

De telles machines comportent un dispositif de circulation d'airventilé, cette ventilation étant réalisée par une turbine. Le flux d'air dans lequel est brassé le linge va fatalement transporter des fibres extraites de cette charge de linge pendant la phase d'essorage et/ou pendant la phase de séchage. Ces fibres transportées par le flux d'air vont se déposer ou s'accumuler dans différents endroits du circuit de séchage. Les obstacles ou les changements de sections de ce circuit de ventilation favorisent ce phénomène de dépôt de fibres qui peut aller jusqu'à l'obstruction complète de sections. En particulier, la turbine en rotation et le conduit d'évacuation (appelé condenseur) vers la cuve de l'air sont des obstacles majeurs inévitables puisqu'ils créent la circulation de l'air. Ainsi, dans les machines assurant cette fonction de séchage du linge, ce phénomène de dépôt de fibres sur la turbine peut provoquer des dysfonctionnements importants. La turbine se charge de fibres et perd de son aérodynamisme. Le flux d'air alors diminue et on observe une baisse des performances de séchage. Une perte trop importante des propriétés aérodynamiques de la turbine peut conduire à des échauffements dramatiques pouvant aller jusqu'à l'incendie, en cas d'absence de sécurité thermique, du fait que les éléments chauffants ne peuvent plus transmettre leur puissance calorifique au flux d'air.Such machines include a ventilated air circulation device, this ventilation being carried out by a turbine. The air flow in which the laundry is brewed will inevitably transport fibers extracted from this load of laundry during the spin phase and / or during the drying phase. These fibers transported by the air flow will deposit or accumulate in different places in the drying circuit. Obstacles or changes of sections of this ventilation circuit favor this phenomenon of fiber deposition which can go as far as the complete obstruction of sections. In particular, the rotating turbine and the exhaust duct (called condenser) to the air tank are unavoidable major obstacles since they create air circulation. Thus, in the machines ensuring this function of drying of the linen, this phenomenon of deposit of fibers on the turbine can cause important dysfunctions. The turbine is loaded with fibers and loses its aerodynamics. The air flow then decreases and a decrease in drying performance is observed. Too great a loss of the aerodynamic properties of the turbine can lead to dramatic overheating which can go as far as fire, in the absence of thermal safety, since the heating elements can no longer transmit their calorific power to the flow d 'air.

Pour résoudre ce problème, différentes solutions sont proposées.To solve this problem, different solutions are proposed.

La première consiste à incorporer dans le circuit d'air un filtre, mais celui-ci nécessite un entretien régulier à la charge de l'utilisateur.The first consists of incorporating a filter into the air circuit, but this requires regular maintenance at the expense of the user.

Une seconde solution consiste à utiliser les projections d'eau lors d'une phase d'essorage, mais cela ne permet de nettoyer que les zones très proches de la cuve, en particulier il n'est pas possible d'atteindre toutes les zones du circuit de séchage.A second solution is to use water splashes during a spin phase, but this only cleans the areas very close to the tank, in particular it is not possible to reach all areas of the drying circuit.

La présente invention permet d'effectuer un nettoyage efficace de la turbine en évitant les inconvénients des solutions existantes grâce à un système d'électrovannes permettant de diriger un jet d'eau de manière tangentielle sur les pales de la turbine qui est mise simultanément en rotation. Les fibres séchées accumulées sur les pales de la turbine et dans le circuit absorbent l'eau, et leur masse s'élève de façon importante. La rotation de la turbine entraînée par le moteur permet, grâce à la force centrifuge dûe à la rotation de la turbine, le décollement des fibres et leur évacuation avec le flux mélangé eau et air.The present invention makes it possible to carry out an effective cleaning of the turbine while avoiding the drawbacks of the existing solutions thanks to a system of solenoid valves making it possible to direct a jet of water tangentially on the blades of the turbine which is simultaneously rotated . The dried fibers accumulated on the turbine blades and in the circuit absorb water, and their mass rises significantly. The rotation of the turbine driven by the motor allows, thanks to the centrifugal force due to the rotation of the turbine, the separation of the fibers and their evacuation with the mixed flow of water and air.

La présente invention concerne donc un dispositif de nettoyage d'un circuit de ventilation comportant une chambre turbine, une turbine munie de pales et entraînée par un moteur et qui est caractérisé en ce qu'il comporte au moins une ouverture débouchant à l'intérieur de la chambre turbine et diffusant au moins un jet de liquide sur la turbine tandis que celle-ci est en rotation.The present invention therefore relates to a device for cleaning a ventilation circuit comprising a turbine chamber, a turbine provided with blades and driven by a motor and which is characterized in that it comprises at least one opening opening into the interior of the turbine chamber and diffusing at least one jet of liquid on the turbine while the latter is rotating.

Le principal avantage de ce dispositif est qu'il ne nécessite aucun rajout de pièces encombrantes puisqu'il s'intègre parfaitement au dispositif déjà existant.The main advantage of this device is that it does not require any additional bulky parts since it integrates perfectly with the already existing device.

L'invention sera mieux comprise et des avantages supplémentaires apparaîtront à la lecture de la description qui va suivre, illustrée par la figure 1 qui représente une vue en coupe d'une partie du circuit de ventilation munie du dispositif selon un mode de réalisation de l'invention.The invention will be better understood and additional advantages will appear on reading the description which follows, illustrated by FIG. 1 which represents a sectional view of part of the ventilation circuit provided with the device according to one embodiment of the invention. 'invention.

Un circuit de ventilation peut comporter, comme sur la figure 1, une chambre turbine 1, une turbine 2 munie de pales 3, et un condenseur 4. Afin de créer un circuit de ventilation fermé, une communication, non représentée sur la figure, débouche de la cuve de préférence dans la partie centrale de la chambre turbine. Avantageusement, un conduit 7 appelé "canal de purge" relie le fond de la chambre turbine à une partie plus basse du condenseur4 (par exemple) afin d'évacuer l'eau présente dans le fond de la chambre turbine du fait de l'essorage ou du fonctionnement de l'invention explicité plus loin. La turbine représentée sur le dessin est constituée par un disque 2 dont une face est munie de pales 3 perpendiculaires à celle-ci, mais tous les types de turbines et de pales peuvent être utilisés sans sortir du cadre de l'invention, Ce type de turbine centrifuge est de préférence décentrée par rapport au centre de la chambre turbine afin de créer le long des parois un volume 8 de plus en plus important (pour finalement déboucher sur le condenseur) permettant de guider le volume d'air en augmentation centrifugé par les pales sur les parois. La turbine 2 est entraînée en rotation par un moteur (non représenté sur la figure) qui peut être un moteur synchrone, asynchrone, universel ou de tout autre type. Les pales 3 de la turbine en rotation (suivant la flèche F sur la figure) créent un flux d'air qui est évacué par le condenseur 4 vers l'enceinte contenant la charge de linge à sécher (non représentée sur la figure) suivant les lignes pointillées. Tel est le fonctionnement du dispositif à circulation d'air ventilé. Ce flux d'air est dirigé dans la cuve sur les éléments chauffants dont il se charge de la puissance calorifique afin de sécher la masse de linge contenue dans la cuve.A ventilation circuit can comprise, as in FIG. 1, a turbine chamber 1, a turbine 2 provided with blades 3, and a condenser 4. In order to create a closed ventilation circuit, a communication, not shown in the figure, opens out of the tank preferably in the central part of the turbine chamber. Advantageously, a conduit 7 called "purge channel" connects the bottom of the turbine chamber to a lower part of the condenser 4 (for example) in order to evacuate the water present in the bottom of the turbine chamber due to the spinning or the operation of the invention explained below. The turbine shown in the drawing consists of a disc 2, one face of which is provided with blades 3 perpendicular thereto, but all types of turbines and blades can be used without departing from the scope of the invention, This type of centrifugal impeller is preferably offset from the center of the turbine chamber in order to create an increasingly large volume along the walls (ultimately leading to the condenser) allowing the volume of increasing air centrifuged by the blades on the walls. The turbine 2 is driven in rotation by a motor (not shown in the figure) which can be a synchronous, asynchronous, universal or any other type motor. The blades 3 of the rotating turbine (according to the arrow F in the figure) create an air flow which is evacuated by the condenser 4 towards the enclosure containing the load of laundry to be dried (not shown in the figure) according to the dotted lines. This is the operation of the ventilated air circulation device. This air flow is directed into the tank on the heating elements for which it takes care of the calorific power in order to dry the mass of laundry contained in the tank.

Pour les raisons évoquées plus haut, des fibres 5 de linge viennent se déposer entre autre sur les pales 3 de la turbine 2 et dans le circuit. Pour se débarrasser de ces parasites, qui peuvent conduire comme on l'a vu plus haut, à des dysfonctionnements graves, l'invention consiste à faire déboucher dans la chambre turbine une ou plusieurs ouvertures 6 diffusant un ou plusieurs jets J de liquide (comme de l'eau par exemple), et à faire tourner simultanément la turbine 2 afin que la force centrifuge entraîne les fibres 5 chargées d'eau dans le condenseur 4.For the reasons mentioned above, fibers 5 of linen are deposited, inter alia, on the blades 3 of the turbine 2 and in the circuit. To get rid of these parasites, which can lead, as we have seen above, to serious dysfunctions, the invention consists in causing one or more openings 6 diffusing in the turbine chamber one diffusing one or more jets J of liquid (as water for example), and simultaneously rotating the turbine 2 so that the centrifugal force drives the fibers 5 loaded with water in the condenser 4.

Les fibres qui se sont déposées dans le circuit de ventilation vont elles aussi se charger de l'eau évacuée de la chambre turbine et être emportées par le flux d'air. Pour une meilleure efficacité du nettoyage du circuit de ventilation hors chambre turbine, des ouvertures diffusant des jets d'eau peuvent être aménagées à divers endroits sensibles du circuit.Fibers that have settled in the ventilation will also take care of the water evacuated from the turbine chamber and be carried away by the air flow. For better cleaning efficiency of the ventilation circuit outside the turbine chamber, openings diffusing water jets can be fitted at various sensitive points of the circuit.

Un mode de fonctionnement du dispositif peut être effectué avantageusement grâce à un ou plusieurs jets J dérivés d'une électrovanne de lavage, à chaque remplissage par cette vanne en deux temps :

  • - dans un premier temps, le ou les jets J frappent seuls les pales de la turbine qui se met en rotation "lente", c'est-à-dire librement, afin de réaliser un barbotage qui a pour but de bien détremper les paquets de fibres,
  • - et dans un deuxième temps, en fin de remplissage, le moteur de la turbine entre en action, ce qui a pour but de mettre la turbine en rotation "rapide" et, sous l'effet de la force centrifuge et du flux air + eau, le nettoyage de l'ensemble turbine et condenseur est réalisé de façon optimale.
An operating mode of the device can advantageously be effected by means of one or more jets J derived from a washing solenoid valve, at each filling by this valve in two stages:
  • - At first, the jets J strike only the blades of the turbine which starts to rotate "slowly", that is to say freely, in order to achieve a bubbling which aims to soak the packets well fiber,
  • - and in a second step, at the end of filling, the turbine engine comes into action, which aims to put the turbine in "fast" rotation and, under the effect of centrifugal force and air flow + water, cleaning of the turbine and condenser assembly is carried out optimally.

De préférence, le ou les jets d'eau sont dirigés tangentiellement à la turbine, c'est-à-dire dans un plan perpendiculaire aux plans des pales, ce qui permet à toutes les surfaces des pales d'être balayées par le ou les jets d'eau en même temps qu'elles sont entraînées par eux dans un premier temps et par le moteur dans un deuxième temps.Preferably, the water jets are directed tangentially to the turbine, that is to say in a plane perpendicular to the planes of the blades, which allows all of the surfaces of the blades to be swept by the water jets at the same time as they are driven by them at first and by the engine at a second time.

Le circuit d'eau alimentant les jets d'eau au travers des ouvertures peut être un circuit parallèle au circuit d'eau de lavage ou un circuit indépendant. Dans ce dernier cas, un additif détergent peut être ajouté à l'eau pour une plus grande efficacité de nettoyage de la turbine.The water circuit supplying the water jets through the openings can be a circuit parallel to the washing water circuit or an independent circuit. In the latter case, a detergent additive can be added to the water for greater cleaning efficiency of the turbine.

Cette opération de rotation de la turbine simultanément à son arrosage peut être commandé manuellement par l'utilisateur ou automatiquement pour une durée déterminée à la fin (ou au début) de chaque cycle de séchage (ou d'un certain nombre de cycles de séchage) ou lors de chaque remplissage lavage. Dans le cas d'une commande automatique, un système de valves peut empêcher le mélange air-eau de venir dans la cuve où le linge est sec. D'autre part, les ouvertures peuvent être commandées par des électro-vannes.This operation of rotating the turbine simultaneously with watering can be controlled manually by the user or automatically for a determined period at the end (or at the beginning) of each drying cycle (or of a certain number of drying cycles) or during each wash filling. In the case of automatic control, a system of valves can prevent the air-water mixture from entering the tank where the laundry is dry. On the other hand, the openings can be controlled by solenoid valves.

La présente invention s'applique aux machines à sécher le linge ou aux machines lavantes et séchantes et, d'une manière plus générale à tous les dispositifs munis d'un système de ventilation d'air et dont un nettoyage automatique est indispensable.The present invention applies to laundry drying machines or to washing and drying machines and, more generally to all devices provided with an air ventilation system and of which automatic cleaning is essential.

Claims (4)

1. Dispositif de nettoyage d'un circuit de ventilation d'air comportant une chambre turbine (1), une turbine (2) munie de pales (3) entrainée par un moteur ainsi qu'une ouverture débouchant à l'intérieur de la chambre turbine (1) et diffusant au moins un jet de liquide (J) sur la turbine (2), caractérisé en ce qu'il est mis en oeuvre en deux temps, dans un premier temps le ou les jets de liquide (J) frappent les pales (3) de la turbine (2) qui sont entrainées librement par eux, et dans un deuxième temps le moteur se met en marche afin de mettre la turbine (2) en rotation rapide.1. Device for cleaning an air ventilation circuit comprising a turbine chamber (1), a turbine (2) provided with blades (3) driven by a motor as well as an opening opening into the interior of the chamber turbine (1) and diffusing at least one jet of liquid (J) on the turbine (2), characterized in that it is implemented in two stages, firstly the liquid jet (s) strike the blades (3) of the turbine (2) which are driven freely by them, and in a second step the engine starts to put the turbine (2) in rapid rotation. 2. Dispositif selon la revendication 1, caractérisé en ce que le ou les jets (J) de liquide sont dirigés tangentiellement à la turbine (2).2. Device according to claim 1, characterized in that the or the jets (J) of liquid are directed tangentially to the turbine (2). 3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le liquide diffusé par le ou les ouvertures (6) est de l'eau ou un mélange eau-produit détergent.3. Device according to any one of the preceding claims, characterized in that the liquid diffused by the opening (s) (6) is water or a water-detergent product mixture. 4. Machine à laver et/ou à sécher le linge, caractérisée en ce qu'elle comporte un dispositif de nettoyage de son circuit de ventillation selon l'une quelconque des revendications précédentes.4. Washing machine and / or dryer, characterized in that it comprises a device for cleaning its ventilation circuit according to any one of the preceding claims.
EP93400958A 1992-04-14 1993-04-13 Impeller cleaning for a washing/drying machine Expired - Lifetime EP0566476B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9204549 1992-04-14
FR9204549A FR2689939B1 (en) 1992-04-14 1992-04-14 TURBINE CLEANING DEVICE FOR WASHING AND DRYING MACHINE.

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Publication Number Publication Date
EP0566476A1 true EP0566476A1 (en) 1993-10-20
EP0566476B1 EP0566476B1 (en) 1997-01-15

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EP93400958A Expired - Lifetime EP0566476B1 (en) 1992-04-14 1993-04-13 Impeller cleaning for a washing/drying machine

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DE (1) DE69307380T2 (en)
FR (1) FR2689939B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1353004A1 (en) * 2002-04-09 2003-10-15 Bonferraro S.p.A. Washing machine with self-cleaning drying circuit
KR100401222B1 (en) * 1994-08-02 2003-12-11 보쉬-지멘스 하우스게레테 게엠바하 Dryable Washing Machine
WO2005028876A1 (en) 2003-09-25 2005-03-31 Abb Research Ltd. Compressor cleaning system
WO2006114802A1 (en) * 2005-04-27 2006-11-02 Ln2 S.R.L. A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.
EP2103730A1 (en) * 2008-03-14 2009-09-23 BSH Bosch und Siemens Hausgeräte GmbH Exhaust air dryer with recirculation component and method for its operation
DE102023200521A1 (en) 2023-01-24 2024-07-25 BSH Hausgeräte GmbH Method for cleaning an air heating system in a water-conducting household appliance and water-conducting household appliance suitable therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113897760B (en) * 2021-11-11 2024-05-10 海信冰箱有限公司 Washing machine and control method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB801758A (en) * 1955-09-26 1958-09-17 Davidson & Co Ltd Improvements in or relating to centrifugal fans
US3116984A (en) * 1961-04-19 1964-01-07 Maytag Co Lint extractor for washer-drier
US3796509A (en) * 1972-05-10 1974-03-12 Westinghouse Electric Corp Scroll washer for centrifugal fans
DE3306243A1 (en) * 1983-02-23 1984-08-23 W. Schlafhorst & Co, 4050 Mönchengladbach Device for cleaning air laden with textile dust
GB2171457A (en) * 1985-02-25 1986-08-28 Chaw Chonq Chiang Cleaning fume exhausting fans

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB801758A (en) * 1955-09-26 1958-09-17 Davidson & Co Ltd Improvements in or relating to centrifugal fans
US3116984A (en) * 1961-04-19 1964-01-07 Maytag Co Lint extractor for washer-drier
US3796509A (en) * 1972-05-10 1974-03-12 Westinghouse Electric Corp Scroll washer for centrifugal fans
DE3306243A1 (en) * 1983-02-23 1984-08-23 W. Schlafhorst & Co, 4050 Mönchengladbach Device for cleaning air laden with textile dust
GB2171457A (en) * 1985-02-25 1986-08-28 Chaw Chonq Chiang Cleaning fume exhausting fans

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100401222B1 (en) * 1994-08-02 2003-12-11 보쉬-지멘스 하우스게레테 게엠바하 Dryable Washing Machine
EP1353004A1 (en) * 2002-04-09 2003-10-15 Bonferraro S.p.A. Washing machine with self-cleaning drying circuit
WO2005028876A1 (en) 2003-09-25 2005-03-31 Abb Research Ltd. Compressor cleaning system
US7524166B2 (en) 2003-09-25 2009-04-28 Abb Research Ltd Compressor cleaning system
WO2006114802A1 (en) * 2005-04-27 2006-11-02 Ln2 S.R.L. A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.
EP2103730A1 (en) * 2008-03-14 2009-09-23 BSH Bosch und Siemens Hausgeräte GmbH Exhaust air dryer with recirculation component and method for its operation
DE102023200521A1 (en) 2023-01-24 2024-07-25 BSH Hausgeräte GmbH Method for cleaning an air heating system in a water-conducting household appliance and water-conducting household appliance suitable therefor

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EP0566476B1 (en) 1997-01-15
FR2689939B1 (en) 1995-10-20
DE69307380D1 (en) 1997-02-27
DE69307380T2 (en) 1997-05-15
FR2689939A1 (en) 1993-10-15

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