EP0669417A1 - Washing and drying machine with a high air flow drying circuit - Google Patents

Washing and drying machine with a high air flow drying circuit Download PDF

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Publication number
EP0669417A1
EP0669417A1 EP95400394A EP95400394A EP0669417A1 EP 0669417 A1 EP0669417 A1 EP 0669417A1 EP 95400394 A EP95400394 A EP 95400394A EP 95400394 A EP95400394 A EP 95400394A EP 0669417 A1 EP0669417 A1 EP 0669417A1
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EP
European Patent Office
Prior art keywords
circuit
drying
turbine
machine
tank
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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.)
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Application number
EP95400394A
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German (de)
French (fr)
Inventor
Pascal Chabanne
Jean-Francis Clement
Marie-Gérard Merlet
Daniel Remeur
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Esswein SA
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Esswein SA
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Publication of EP0669417A1 publication Critical patent/EP0669417A1/en
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    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 

Definitions

  • the present invention relates to a washer-dryer with a drying circuit with high air flow.
  • a washer-dryer comprises, to ensure the drying of the wet or wet linen it contains, a turbine circulating hot air in a circuit including the drum in which this linen is placed.
  • This turbine is generally placed at the top of the machine, this in order to limit the number of sealed flexible connections of the drying circuit and to ensure a flow by gravity of the condensates, due to the drying of the linen, towards the tank of the machine.
  • the air flow of such a turbine is limited on the one hand by its dimensions, and on the other hand by the tolerable limit of the noise which it generates and which is a function of its speed of rotation.
  • the air flow of the turbine is substantially proportional to its speed of rotation and to the cube of its diameter. This flow cannot be easily increased: the upper part of the machine contains several elements (condenser of the drying circuit, laundry basket, product boxes, ...), which limits the space available for the turbine, the diameter of which cannot generally exceed 150 to 180 mm.
  • the speed of rotation of the turbine is generally limited to approximately 5000 to 6000 revolutions / min so that the level of noise generated is acceptable.
  • the present invention relates to a washer-dryer or a dryer whose drying air circuit has an air flow rate significantly higher than that of the air circuits of known machines, while having an acoustic level equal to or less than that of known machines, without practically increasing the cost price.
  • the washer-dryer or dryer machine according to the invention is characterized in that in order to increase the drying air flow rate without increasing the noise level, the turbine of the drying circuit is placed under the tank. the machine.
  • the drainage circuit of the machine is connected to its drying circuit, and the turbine of the drying circuit is used for draining, and that the water collected by the condenser flows directly into the drying circuit.
  • the machine 1 shown in FIG. 1 essentially comprises a tank 2, a rotary drum 3, a drying circuit 4 and a draining circuit 5.
  • the drying circuit comprises respectively: a first end 4A opening at the top of the tank 2, a first vertical branch 6 extending along the tank, a second horizontal branch 7 extending under the tank 2, and a third branch 8 vertical, the end 4B of which constitutes the other end of the circuit 4 and opens, for example, in the axis of the drum 3 towards the face of the drum opposite to that which is opposite the end 4A.
  • the heating circuit can be used (in particular, the places where the ends 4A and 4B open may be different), provided that part of this circuit passes under the tank 2.
  • the branch 7 has an enlarged part 11 in which there is a turbine 12 with a substantially vertical axis of rotation, driven by a motor 13, this motor being outside the pipe, above or below the turbine 12
  • the elements 9 and 10 can be reversed (arranged in the branches 8 and 6 respectively).
  • the shape and the dimensions of the part 11 of the branch 7 are provided in order to be able to accommodate there a turbine as large as possible, taking into account the space available under the tank 2.
  • the diameter of the turbine can advantageously be equal to about half the length of the tank (measured parallel to the axis of rotation of the drum 3).
  • the axis of rotation of the turbine 12 could be tilted, on the assumption that the height of the space available under the tank would be sufficient to allow this tilting.
  • the bottom of the tank 2 is connected to the branch 7 by a pipe 14.
  • the branch 7 is directly connected to the input 5A of the drainage circuit 5.
  • a valve 15 followed by a drain pump 16.
  • the drain circuit ends with a conventional drain rod 17.
  • the washing and rinsing water fills the lower part of the drying circuit 4, to the same level as in the tank, as shown in FIG. 1.
  • the valve 15 is closed during the washing and rinsing phases, and only opens during the emptying operations, provided by the pump 16.
  • the turbine 12, driven by the motor 13, circulates in the circuit 4 and through the drum 3 the air heated by the heating device 10.
  • the condenser 9 fixes the moisture taken from the laundry in the drum 3 by the air thus heated.
  • the condensates fixed by the condenser 9 flow through line 6 to line 7 at the bottom of which they accumulate.
  • These condensates are pumped by the pump 16, the valve 15 then being, of course, open. This pumping of the condensate water collected in the pipe 7 can be done during the entire duration of the drying phase or intermittently, when the water level in the pipe 7 reaches a certain level.
  • the bottom of the duct 7 is at a level slightly lower than that of the inlet 5A of the drainage circuit 5, there remains a small amount of water 17 in the bottom of the pipe 7 in drying mode (water coming from the condenser 9), this water completing the action of the condenser 9.
  • FIG. 2 shows another embodiment of the machine of the invention.
  • the elements similar to those of the machine of FIG. 1 are given the same numerical references, and the similar elements that have been slightly modified are given numerical references bearing the same number, but with different exhibitors (such as 7 ', 7' ', ).
  • the essential difference between the machines of FIGS. 1 and 2 lies in the fact that the washing circuit is separated from that of the drying circuit.
  • the bottom of the tank 2 is connected by a pipe 18 to the drain circuit 5.
  • This circuit 5 comprises the valve 15, the pump 16 and the drain rod 17.
  • the valve 15 normally closed in washing and rinsing, only opens during draining after washing and after rinsing.
  • the pump 16 only works when the valve 15 opens.
  • the dead volume of water of the machine is reduced, that is to say the volume of water which is not in direct contact with the load of laundry (water contained in the pipe 18, in particular).
  • the turbine also serves as a drain pump in washing and rinsing.
  • the enlarged portion 20 of the lower pipe 7 '' of the drying circuit 4 '' is located downstream of the junction between the pipe 21 and the pipe 7 ''.
  • the valve 15 is arranged at the inlet of the drain circuit 5 ′, but this drain circuit no longer includes a pump (pump 16 in FIG. 1).
  • a valve 22 is added in the upper part of the pipe 8 '' of the drying circuit 4 ''.
  • the valve 15 is closed.
  • the valve 22 can be closed, but according to an advantageous characteristic, it is open, and the turbine 12 serves as a pump for recirculating washing and rinsing water.
  • the heating device 10 is arranged below the normal level of washing water, and constitutes, in addition to its role of air heating device for drying, the only heating device d wash water, and rinse water if necessary.
  • the valve 22 is closed, and the valve 15 is open, and the turbine 12 ensures the evacuation of the water towards the emptying circuit.
  • the valve 22 is open and the valve 15 closed.
  • the hot drying air circulates in the 4 '' circuit and in the drum 3 thanks to the turbine 12.
  • the valve 22 is closed and the valve is opened 15, in order to evacuate the condensation water accumulated at the bottom of the 4 '' circuit.
  • FIG. 4 shows an advantageous embodiment of a machine 1C according to the invention.
  • the drying circuit 4 ''' is isolated from the drainage circuit 5''.
  • the bottom of the tank 2 is directly connected by a pipe 23 to the drain circuit 5 ''.
  • This drain circuit 5 '' includes a drain pump 16 and a drain rod 17.
  • the drying circuit 4 '''of the machine of Figure 4 is similar to that of the machine of Figure 2, with the difference that the motor 13 drives, in addition to the turbine 12 for circulating hot air, a turbine 24 fixed on the same shaft 13A as the turbine 12.
  • the turbine 24 is disposed between the motor 13 and the turbine 12, in a chamber 25 of dimensions slightly larger than those of the turbine 24.
  • This chamber 25 communicates, at its upper part, with the space 11 'in which the turbine 12 is located, by virtue of a passage 26 coaxial with the shaft 13A of the motor 13.
  • a conduit 27 connects the periphery of the chamber 25 to the upper part of the tank 2.
  • the turbine 25 operates as a centrifugal pump.
  • the machine of FIG. 4 operates in a conventional manner, and in emptying regimes after washing and rinsing, as well as in spinning, the pump 16 ensures, also in a conventional manner, the emptying via the rod 17.
  • the turbine 12 ensures the circulation of hot air through the drum 3, while the pump 24 rejects via the pipe 27 the condensation water collected by the condenser 9, which flows towards the bottom of part 7 '' 'of circuit 6, and from there to chamber 25.
  • the water arriving in tank 2 via line 27 flows along its walls to the bottom of the tank, and is discharged by the pump 16 to the drain rod 17.
  • the pump 16 can operate constantly, or, advantageously, intermittently, at close intervals at the start of drying, and at more spaced intervals at the end of drying.
  • the motor 13 rotates in the same direction to circulate the hot air (turbine 12) and to discharge the water of condensation in the pipe 27 (turbine 24), or in opposite directions .
  • the two turbines 12 and 24 can then be placed in remote locations, for example for reasons of space.
  • the drying turbine can have larger dimensions than the turbines of known machines (its diameter can be of the same order of magnitude as the length of the drum), while being at least as quiet than known turbines, because it is placed under the tank, where it can be soundproofed effectively.
  • the drain pump is eliminated.
  • the machine of FIG. 5 differs from that of FIG. 4 essentially in that the condenser 9 is cooled by cold water from the network arriving via a pipe 28 on which is interposed a valve 29.
  • the turbine 24 ensures the evacuation of this cooling water, at the same time as the evacuation of condensates due to the drying process.
  • the turbine of the invention rotates at speeds generally between approximately 1,500 and 6,000 rpm, and advantageously between approximately 2,500 and 3,500 rpm.
  • the diameter of the turbine (measured perpendicular to its axis of rotation) is greater than 150 mm, and preferably greater than approximately 300 mm.
  • the air flow rate provided by this turbine is generally between 50 and 300 m3 / h approximately and advantageously greater than or equal to 150 m3 / h.
  • the height of the turbine blades, measured parallel to its axis of rotation, is generally greater than approximately 25 mm, and advantageously greater than or equal to 40 mm.
  • the device of the invention provides, in an exemplary embodiment, a gain in drying time. about 20 to 30%, at a noise level less than or equal to that of known machines.

Abstract

The washer/drier has a drying circuit with a turbine (12), a condenser (9) and a heater, with the turbine situated below the level of the machine's chamber, so that water collected by the condenser in the drying mode is able to pass through the drying circuit. In variants of the design the drying circuit (4''') is separate from the emptying circuit (5''), with the base (7''') of the drying circuit connected to a pump (24) which is linked directly to the machine's chamber, and with both the pump and turbine driven by the same motor (13). The pipe connecting the pump to the machine's chamber is linked to the drying circuit at a point immediately adjacent to the chamber.

Description

La présente invention se rapporte à un lave-linge séchant à circuit de séchage à débit d'air élevé.The present invention relates to a washer-dryer with a drying circuit with high air flow.

Un lave-linge séchant comporte, pour assurer le séchage du linge humide ou mouillé qu'il contient, une turbine faisant circuler de l'air chaud dans un circuit incluant le tambour dans lequel est disposé ce linge. Cette turbine est généralement placée à la partie supérieure de la machine, ceci afin de limiter le nombre de liaisons souples étanches du circuit de séchage et d'assurer un écoulement par gravité des condensats, dus à la dessiccation du linge, vers la cuve de la machine.A washer-dryer comprises, to ensure the drying of the wet or wet linen it contains, a turbine circulating hot air in a circuit including the drum in which this linen is placed. This turbine is generally placed at the top of the machine, this in order to limit the number of sealed flexible connections of the drying circuit and to ensure a flow by gravity of the condensates, due to the drying of the linen, towards the tank of the machine.

Le débit d'air d'une telle turbine est limité d'une part par ses dimensions, et d'autre part par la limite tolérable du bruit qu'elle engendre et qui est fonction de sa vitesse de rotation. Le débit d'air de la turbine est sensiblement proportionnel à sa vitesse de rotation et au cube de son diamètre. Ce débit ne peut être augmenté facilement: la partie supérieure de la machine renferme plusieurs éléments (condenseur du circuit de séchage, panier à linge, boîtes à produits, ...), ce qui limite la place disponible pour la turbine, dont le diamètre ne peut en général excéder 150 à 180 mm. La vitesse de rotation de la turbine est généralement limitée à 5000 à 6000 tours/mn environ afin que le niveau du bruit engendré soit acceptable.The air flow of such a turbine is limited on the one hand by its dimensions, and on the other hand by the tolerable limit of the noise which it generates and which is a function of its speed of rotation. The air flow of the turbine is substantially proportional to its speed of rotation and to the cube of its diameter. This flow cannot be easily increased: the upper part of the machine contains several elements (condenser of the drying circuit, laundry basket, product boxes, ...), which limits the space available for the turbine, the diameter of which cannot generally exceed 150 to 180 mm. The speed of rotation of the turbine is generally limited to approximately 5000 to 6000 revolutions / min so that the level of noise generated is acceptable.

La présente invention a pour objet un lave-linge séchant ou un sèche-linge dont le circuit d'air de séchage ait un débit d'air nettement plus élevé que celui des circuits d'air des machines connues, tout en présentant un niveau acoustique égal ou inférieur à celui des machines connues, sans pour autant pratiquement en augmenter le prix de revient.The present invention relates to a washer-dryer or a dryer whose drying air circuit has an air flow rate significantly higher than that of the air circuits of known machines, while having an acoustic level equal to or less than that of known machines, without practically increasing the cost price.

La machine lave-linge séchant ou sèche-linge conforme à l'invention est caractérisée par le fait que pour en augmenter le débit d'air de séchage sans en augmenter le niveau sonore, la turbine du circuit de séchage est disposée sous la cuve de la machine. De façon avantageuse, le circuit de vidange de la machine est relié à son circuit de séchage, et la turbine du circuit de séchage sert à la vidange, et que l'eau recueillie par le condensateur circule directement dans le circuit de séchage.The washer-dryer or dryer machine according to the invention is characterized in that in order to increase the drying air flow rate without increasing the noise level, the turbine of the drying circuit is placed under the tank. the machine. Advantageously, the drainage circuit of the machine is connected to its drying circuit, and the turbine of the drying circuit is used for draining, and that the water collected by the condenser flows directly into the drying circuit.

La présente invention sera mieux comprise à la lecture de la description détaillée de plusieurs modes de réalisation, pris à titre d'exemples non limitatifs et illustrées par le dessin annexé, sur lequel :

  • la figure 1 est une vue schématique en coupe d'un premier mode de réalisation d'un lave-linge séchant conforme à l'invention ;
  • les figures 2 à 5 sont des vues schématiques d'autres modes de réalisation d'un lave-linge séchant conforme à l'invention.
The present invention will be better understood on reading the detailed description of several embodiments, taken by way of nonlimiting examples and illustrated by the appended drawing, in which:
  • Figure 1 is a schematic sectional view of a first embodiment of a washer-dryer according to the invention;
  • Figures 2 to 5 are schematic views of other embodiments of a washer-dryer in accordance with the invention.

La machine 1 représentée en figure 1 comporte essentiellement une cuve 2, un tambour rotatif 3, un circuit de séchage 4 et un circuit de vidange 5.The machine 1 shown in FIG. 1 essentially comprises a tank 2, a rotary drum 3, a drying circuit 4 and a draining circuit 5.

Le circuit de séchage comprend respectivement : une première extrémité 4A débouchant en haut de la cuve 2, une première branche 6 verticale s'étendant le long de la cuve, une seconde branche 7 horizontale s'étendant sous la cuve 2, et une troisième branche 8 verticale, dont l'extrémité 4B constitue l'autre extrémité du circuit 4 et débouche par exemple dans l'axe du tambour 3 vers la face du tambour opposée à celle qui est en vis-à-vis de l'extrémité 4A. Bien entendu, d'autres dispositions du circuit de chauffage peuvent être utilisées (en particulier, les endroits où débouchent les extrémités 4A et 4B peuvent être différents), à condition qu'une partie de ce circuit passe sous la cuve 2.The drying circuit comprises respectively: a first end 4A opening at the top of the tank 2, a first vertical branch 6 extending along the tank, a second horizontal branch 7 extending under the tank 2, and a third branch 8 vertical, the end 4B of which constitutes the other end of the circuit 4 and opens, for example, in the axis of the drum 3 towards the face of the drum opposite to that which is opposite the end 4A. Of course, other arrangements of the heating circuit can be used (in particular, the places where the ends 4A and 4B open may be different), provided that part of this circuit passes under the tank 2.

On dispose dans la branche 6 un condenseur 9, et dans la branche 8 un dispositif 10 de chauffage d'air. La branche 7 comporte une partie élargie 11 dans laquelle on dispose une turbine 12 à axe de rotation sensiblement vertical, entraînée par un moteur 13, ce moteur étant à l'extérieur de la conduite, au-dessus ou en-dessous de la turbine 12. Les éléments 9 et 10 peuvent être inversés (disposés dans les branches 8 et 6 respectivement). Bien entendu, la forme et les dimensions de la partie 11 de la branche 7 sont prévues pour pouvoir y loger une turbine la plus grande possible, compte tenu de la place disponible sous la cuve 2. Le diamètre de la turbine peut avantageusement être égal à environ la moitié de la longueur de la cuve (mesurée parallèlement à l'axe de rotation du tambour 3). Au cas où la place disponible sous la cuve 2 ne serait pas assez grande, on pourrait incliner l'axe de rotation de la turbine 12, dans l'hypothèse où la hauteur de la place disponible sous la cuve serait suffisante pour permettre cette inclinaison. On relie le fond de la cuve 2 à la branche 7 par une conduite 14.There is in the branch 6 a condenser 9, and in the branch 8 a device 10 for air heating. The branch 7 has an enlarged part 11 in which there is a turbine 12 with a substantially vertical axis of rotation, driven by a motor 13, this motor being outside the pipe, above or below the turbine 12 The elements 9 and 10 can be reversed (arranged in the branches 8 and 6 respectively). Of course, the shape and the dimensions of the part 11 of the branch 7 are provided in order to be able to accommodate there a turbine as large as possible, taking into account the space available under the tank 2. The diameter of the turbine can advantageously be equal to about half the length of the tank (measured parallel to the axis of rotation of the drum 3). If the space available under the tank 2 is not large enough, the axis of rotation of the turbine 12 could be tilted, on the assumption that the height of the space available under the tank would be sufficient to allow this tilting. The bottom of the tank 2 is connected to the branch 7 by a pipe 14.

La branche 7 est directement reliée à l'entrée 5A du circuit de vidange 5. On dispose au début du circuit 5, près de son entrée 5A, une vanne 15 suivie d'une pompe de vidange 16. Le circuit de vidange se termine par une canne de vidange classique 17.The branch 7 is directly connected to the input 5A of the drainage circuit 5. At the start of the circuit 5, there is a valve 15 followed by a drain pump 16. The drain circuit ends with a conventional drain rod 17.

Du fait que le fond de la cuve 2 est relié à la conduite 7, l'eau de lavage et de rinçage emplit la partie inférieure du circuit 4 de séchage, jusqu'au même niveau que dans la cuve, comme représenté en figure 1. La vanne 15 est fermée pendant les phases de lavage et de rinçage, et ne s'ouvre que pendant les vidanges, assurées par la pompe 16.Because the bottom of the tank 2 is connected to the pipe 7, the washing and rinsing water fills the lower part of the drying circuit 4, to the same level as in the tank, as shown in FIG. 1. The valve 15 is closed during the washing and rinsing phases, and only opens during the emptying operations, provided by the pump 16.

En régime de séchage, la turbine 12, entraînée par le moteur 13, fait circuler dans le circuit 4 et à travers le tambour 3 l'air chauffé par le dispositif de chauffage 10. Le condenseur 9 fixe l'humidité prélevée au linge se trouvant dans le tambour 3 par l'air ainsi chauffé. Les condensats fixés par le condenseur 9 s'écoulent par la conduite 6 vers la conduite 7 au fond de laquelle ils s'accumulent. Ces condensats sont pompés par la pompe 16, la vanne 15 étant alors, bien entendu, ouverte. Ce pompage de l'eau des condensats recueillis dans la conduite 7 peut se faire pendant toute la durée de la phase de séchage ou par intermittence, lorsque le niveau d'eau dans la conduite 7 atteint un certain niveau. Du fait que, dans le mode de réalisation représenté sur le dessin, le fond du conduit 7 est à un niveau légèrement inférieur à celui de l'entrée 5A du circuit de vidange 5, il subsiste une faible quantité d'eau 17 dans le fond de la conduite 7 en régime de séchage (eau provenant du condenseur 9), cette eau complétant l'action du condenseur 9.In drying mode, the turbine 12, driven by the motor 13, circulates in the circuit 4 and through the drum 3 the air heated by the heating device 10. The condenser 9 fixes the moisture taken from the laundry in the drum 3 by the air thus heated. The condensates fixed by the condenser 9 flow through line 6 to line 7 at the bottom of which they accumulate. These condensates are pumped by the pump 16, the valve 15 then being, of course, open. This pumping of the condensate water collected in the pipe 7 can be done during the entire duration of the drying phase or intermittently, when the water level in the pipe 7 reaches a certain level. Because, in the embodiment shown in the drawing, the bottom of the duct 7 is at a level slightly lower than that of the inlet 5A of the drainage circuit 5, there remains a small amount of water 17 in the bottom of the pipe 7 in drying mode (water coming from the condenser 9), this water completing the action of the condenser 9.

On a représenté en figure 2 un autre mode de réalisation de la machine de l'invention. Sur cette figure, comme sur les figures 3 et 4, les éléments similaires à ceux de la machine de la figure 1 sont affectés des mêmes références numériques, et les éléments similaires légèrement modifiés sont affectés de références numériques portant le même chiffre, mais avec des exposants différents (tels que 7', 7'',...).FIG. 2 shows another embodiment of the machine of the invention. In this figure, as in FIGS. 3 and 4, the elements similar to those of the machine of FIG. 1 are given the same numerical references, and the similar elements that have been slightly modified are given numerical references bearing the same number, but with different exhibitors (such as 7 ', 7' ', ...).

La différence essentielle entre les machines des figures 1 et 2 réside dans le fait que l'on dissocie le circuit de lavage de celui de séchage. Dans la machine 1A de la figure 2, le fond de la cuve 2 est relié par une conduite 18 au circuit de vidange 5. Ce circuit 5 comprend la vanne 15, la pompe 16 et la canne de vidange 17. La vanne 15 normalement fermée en lavage et en rinçage, ne s'ouvre que lors des vidanges après lavage et après rinçage. La pompe 16 ne fonctionne que lorsque la vanne 15 s'ouvre. Ainsi, en régime de lavage, on réduit le volume mort d'eau de la machine, c'est-à-dire le volume d'eau qui n'est pas en contact direct avec la charge de linge (eau contenue dans la conduite 18, en particulier).The essential difference between the machines of FIGS. 1 and 2 lies in the fact that the washing circuit is separated from that of the drying circuit. In the machine 1A of FIG. 2, the bottom of the tank 2 is connected by a pipe 18 to the drain circuit 5. This circuit 5 comprises the valve 15, the pump 16 and the drain rod 17. The valve 15 normally closed in washing and rinsing, only opens during draining after washing and after rinsing. The pump 16 only works when the valve 15 opens. Thus, in washing mode, the dead volume of water of the machine is reduced, that is to say the volume of water which is not in direct contact with the load of laundry (water contained in the pipe 18, in particular).

Selon un autre mode de réalisation représenté en figure 3, afin d'économiser un moteur, la turbine sert également de pompe de vidange en lavage et rinçage.According to another embodiment shown in Figure 3, to save a motor, the turbine also serves as a drain pump in washing and rinsing.

Dans le cas de la machine de la figure 3, la portion élargie 20 de la conduite inférieure 7'' du circuit de séchage 4'' se situe en aval de la jonction entre la conduite 21 et de la conduite 7''. La vanne 15 est disposée à l'entrée du circuit de vidange 5', mais ce circuit de vidange ne comporte plus de pompe (pompe 16 de la figure 1). On ajoute une vanne 22 dans la partie haute de la conduite 8'' du circuit de séchage 4''.In the case of the machine of FIG. 3, the enlarged portion 20 of the lower pipe 7 '' of the drying circuit 4 '' is located downstream of the junction between the pipe 21 and the pipe 7 ''. The valve 15 is arranged at the inlet of the drain circuit 5 ′, but this drain circuit no longer includes a pump (pump 16 in FIG. 1). A valve 22 is added in the upper part of the pipe 8 '' of the drying circuit 4 ''.

En régimes de lavage et de rinçage, la vanne 15 est fermée. La vanne 22 peut être fermée, mais selon une caractéristique avantageuse, elle est ouverte, et la turbine 12 sert de pompe de recirculation d'eau de lavage et de rinçage. Egalement de façon avantageuse, le dispositif de chauffage 10 est disposé en-dessous du niveau normal d'eau de lavage, et constitue, en plus de son rôle de dispositif de chauffage d'air pour le séchage, l'unique dispositif de chauffage d'eau de lavage, et d'eau de rinçage le cas échéant. Pour assurer les vidanges, la vanne 22 est fermée, et la vanne 15 est ouverte, et la turbine 12 assure l'évacuation de l'eau vers le circuit de vidange. En régime de séchage, la vanne 22 est ouverte et la vanne 15 fermée. L'air chaud de séchage circule dans le circuit 4'' et dans le tambour 3 grâce à la turbine 12. A la fin du séchage, ou éventuellement une ou plusieurs fois pendant le séchage, on ferme la vanne 22 et on ouvre la vanne 15, afin d'évacuer l'eau de condensation accumulée dans le bas du circuit 4''.In washing and rinsing regimes, the valve 15 is closed. The valve 22 can be closed, but according to an advantageous characteristic, it is open, and the turbine 12 serves as a pump for recirculating washing and rinsing water. Also advantageously, the heating device 10 is arranged below the normal level of washing water, and constitutes, in addition to its role of air heating device for drying, the only heating device d wash water, and rinse water if necessary. To ensure the emptying, the valve 22 is closed, and the valve 15 is open, and the turbine 12 ensures the evacuation of the water towards the emptying circuit. In the drying regime, the valve 22 is open and the valve 15 closed. The hot drying air circulates in the 4 '' circuit and in the drum 3 thanks to the turbine 12. At the end of the drying, or possibly one or more times during the drying, the valve 22 is closed and the valve is opened 15, in order to evacuate the condensation water accumulated at the bottom of the 4 '' circuit.

On a représenté en figure 4 un mode de réalisation avantageux d'une machine 1C conforme à l'invention. Pour ce mode de réalisation, le circuit de séchage 4''' est isolé du circuit de vidange 5''. Le fond de la cuve 2 est directement relié par une conduite 23 au circuit de vidange 5''. Ce circuit de vidange 5'' comporte une pompe de vidange 16 et une canne de vidange 17. Le circuit de séchage 4''' de la machine de la figure 4 est similaire à celui de la machine de la figure 2, à la différence que le moteur 13 entraîne, en plus de la turbine 12 de circulation d'air chaud une turbine 24 fixée sur le même arbre 13A que la turbine 12. La turbine 24 est disposée entre le moteur 13 et la turbine 12, dans une chambre 25 de dimensions légèrement supérieures à celles de la turbine 24. Cette chambre 25 communique, à sa partie supérieure, avec l'espace 11' dans lequel se trouve la turbine 12, grâce à un passage 26 coaxial à l'arbre 13A du moteur 13. Un conduit 27 relie la périphérie de la chambre 25 à la partie supérieure de la cuve 2. Ainsi, la turbine 25 fonctionne en pompe centrifuge.FIG. 4 shows an advantageous embodiment of a machine 1C according to the invention. For this embodiment, the drying circuit 4 '''is isolated from the drainage circuit 5''. The bottom of the tank 2 is directly connected by a pipe 23 to the drain circuit 5 ''. This drain circuit 5 '' includes a drain pump 16 and a drain rod 17. The drying circuit 4 '''of the machine of Figure 4 is similar to that of the machine of Figure 2, with the difference that the motor 13 drives, in addition to the turbine 12 for circulating hot air, a turbine 24 fixed on the same shaft 13A as the turbine 12. The turbine 24 is disposed between the motor 13 and the turbine 12, in a chamber 25 of dimensions slightly larger than those of the turbine 24. This chamber 25 communicates, at its upper part, with the space 11 'in which the turbine 12 is located, by virtue of a passage 26 coaxial with the shaft 13A of the motor 13. A conduit 27 connects the periphery of the chamber 25 to the upper part of the tank 2. Thus, the turbine 25 operates as a centrifugal pump.

En régimes de lavage et de rinçage, la machine de la figure 4 fonctionne de façon classique, et en régimes de vidange après lavage et rinçage, ainsi qu'en essorage, la pompe 16 assure, de façon également classique, la vidange via la canne 17.In washing and rinsing regimes, the machine of FIG. 4 operates in a conventional manner, and in emptying regimes after washing and rinsing, as well as in spinning, the pump 16 ensures, also in a conventional manner, the emptying via the rod 17.

En régime de séchage, la turbine 12 assure la circulation d'air chaud à travers le tambour 3, tandis que la pompe 24 rejette via la conduite 27 l'eau de condensation recueillie par le condenseur 9, qui s'écoule vers le fond de la partie 7''' du circuit 6, et de là, vers la chambre 25. L'eau arrivant dans la cuve 2 par la conduite 27 s'écoule le long de ses parois jusqu'au fond de la cuve, et est évacuée par la pompe 16 vers la canne de vidange 17.In the drying regime, the turbine 12 ensures the circulation of hot air through the drum 3, while the pump 24 rejects via the pipe 27 the condensation water collected by the condenser 9, which flows towards the bottom of part 7 '' 'of circuit 6, and from there to chamber 25. The water arriving in tank 2 via line 27 flows along its walls to the bottom of the tank, and is discharged by the pump 16 to the drain rod 17.

En régime de séchage, la pompe 16 peut fonctionner constamment, ou, de façon avantageuse, par intermittence, à intervalles rapprochés au début du séchage, et à intervalles plus espacés à la fin du séchage.In the drying regime, the pump 16 can operate constantly, or, advantageously, intermittently, at close intervals at the start of drying, and at more spaced intervals at the end of drying.

Suivant la façon dont est réalisée la turbine 24, le moteur 13 tourne dans le même sens pour faire circuler l'air chaud (turbine 12) et pour refouler l'eau de condensation dans la conduite 27 (turbine 24), ou en sens contraires. Bien entendu, il n'est pas absolument nécessaire d'entraîner les deux turbines 12 et 24 par le même moteur, et on peut alors disposer ces deux turbines en des endroits éloignés, par exemple pour des raisons d'encombrement.According to the way in which the turbine 24 is produced, the motor 13 rotates in the same direction to circulate the hot air (turbine 12) and to discharge the water of condensation in the pipe 27 (turbine 24), or in opposite directions . Of course, it is not absolutely necessary to drive the two turbines 12 and 24 by the same motor, and these two turbines can then be placed in remote locations, for example for reasons of space.

Ainsi, dans la machine de l'invention, la turbine de séchage peut avoir de plus grandes dimensions que les turbines des machines connues (son diamètre peut être du même ordre de grandeur que la longueur du tambour), tout en étant au moins aussi silencieuse que les turbines connues, du fait qu'elle est disposée sous la cuve, où elle peut être insonorisée de façon efficace. De plus, dans certains modes de réalisation (figure 3), on supprime la pompe de vidange.Thus, in the machine of the invention, the drying turbine can have larger dimensions than the turbines of known machines (its diameter can be of the same order of magnitude as the length of the drum), while being at least as quiet than known turbines, because it is placed under the tank, where it can be soundproofed effectively. In addition, in certain embodiments (FIG. 3), the drain pump is eliminated.

On a représenté en figure 5 une variante de la machine de la figure 4, et les éléments similaires à ceux de la figure 4 y ont été affectés des mêmes références numériques.There is shown in Figure 5 a variant of the machine of Figure 4, and elements similar to those of Figure 4 have been assigned the same reference numerals.

La machine de la figure 5 diffère de celle de la figure 4 essentiellement du fait que le condenseur 9 est refroidi par de l'eau froide du réseau arrivant par une conduite 28 sur laquelle est interposée une vanne 29. La turbine 24 assure l'évacuation de cette eau de refroidissement, en même temps que l'évacuation des condensats dus au processus de séchage.The machine of FIG. 5 differs from that of FIG. 4 essentially in that the condenser 9 is cooled by cold water from the network arriving via a pipe 28 on which is interposed a valve 29. The turbine 24 ensures the evacuation of this cooling water, at the same time as the evacuation of condensates due to the drying process.

Une autre différence entre les machines des figures 4 et 5 est que dans le cas de la machine de la figure 5 la conduite 27 est reliée à la conduite 6 par une conduite 30. Cette liaison 30 se situe à la partie supérieure des conduites 27 et 6, le plus près possible de la cuve 2. Ainsi, une partie de l'eau remontant la conduite 27 est dérivée vers la conduite 6 qu'elle descend vers le condenseur 9. Ainsi, on recircule une partie de l'eau nécessaire au refroidissement du condenseur, ce qui entraîne des économies d'eau. De plus, cette eau recirculée permet de nettoyer la conduite 6, le condenseur 9, la chambre 11' et la turbine 12 des fragments de tissus entraînés par l'air de séchage et qui auraient pu s'accumuler sur ces éléments.Another difference between the machines of FIGS. 4 and 5 is that in the case of the machine of FIG. 5, the pipe 27 is connected to the pipe 6 by a pipe 30. This connection 30 is located at the top of the pipes 27 and 6, as close as possible to the tank 2. Thus, part of the water going up the line 27 is diverted towards the line 6 which it descends towards the condenser 9. Thus, part of the water recirculated is necessary for the condenser cooling, which saves water. In addition, this recirculated water makes it possible to clean the pipe 6, the condenser 9, the chamber 11 ′ and the turbine 12 from tissue fragments entrained by the drying air and which could have accumulated on these elements.

La turbine de l'invention tourne à des vitesses généralement comprises entre 1.500 et 6.000 t/mn environ, et avantageusement comprises entre 2.500 et 3.500 t/mn environ. Le diamètre de la turbine (mesuré perpendiculairement à son axe de rotation) est supérieur à 150 mm, et de préférence supérieur à 300 mm environ. Le débit d'air assuré par cette turbine est généralement compris entre 50 et 300 m³/h environ et avantageusement supérieur ou égal à 150 m³/h. La hauteur des pales de la turbine, mesurée parallèlement à son axe de rotation, est généralement supérieure à 25 mm environ, et avantageusement supérieure ou égale à 40 mm.The turbine of the invention rotates at speeds generally between approximately 1,500 and 6,000 rpm, and advantageously between approximately 2,500 and 3,500 rpm. The diameter of the turbine (measured perpendicular to its axis of rotation) is greater than 150 mm, and preferably greater than approximately 300 mm. The air flow rate provided by this turbine is generally between 50 and 300 m³ / h approximately and advantageously greater than or equal to 150 m³ / h. The height of the turbine blades, measured parallel to its axis of rotation, is generally greater than approximately 25 mm, and advantageously greater than or equal to 40 mm.

Pour un débit d'air d'environ 150 m³/h, le dispositif de l'invention procure, dans un exemple de réalisation, un gain en temps de séchage d'environ 20 à 30 %, à niveau sonore inférieur ou égal à celui des machines connues.For an air flow of approximately 150 m³ / h, the device of the invention provides, in an exemplary embodiment, a gain in drying time. about 20 to 30%, at a noise level less than or equal to that of known machines.

Claims (9)

Machine lave-linge séchante ou sèche-linge à circuit de séchage à débit d'air élevé, ce circuit de séchage comportant une turbine (12), un condenseur (9) et un dispositif de chauffage (10), caractérisée en ce que pour en augmenter le débit d'air de séchage sans en augmenter le niveau sonore, la turbine (12) est disposée sous la cuve de la machine et que l'eau recueillie par ce condenseur circule directement dans le circuit de séchage.Washer-dryer machine or dryer with a drying circuit with high air flow, this drying circuit comprising a turbine (12), a condenser (9) and a heating device (10), characterized in that for increase the drying air flow without increasing the noise level, the turbine (12) is placed under the machine tank and the water collected by this condenser flows directly into the drying circuit. Machine selon la revendication 1, caractérisée en ce que le circuit de séchage (4''') est isolé du circuit de vidange (5'').Machine according to claim 1, characterized in that the drying circuit (4 '' ') is isolated from the drainage circuit (5' '). Machine selon l'une des revendications 1 ou 2, caractérisée par le fait que le fond (7''') du circuit de séchage est relié (26) à une pompe de refoulement (24) elle-même reliée (27) à la cuve (2) de la machine.Machine according to one of claims 1 or 2, characterized in that the bottom (7 '' ') of the drying circuit is connected (26) to a discharge pump (24) itself connected (27) to the machine tank (2). Machine selon la revendication 3, caractérisée en ce que la pompe de refoulement (24) et la turbine (12) sont entraînées par le même moteur (13).Machine according to claim 3, characterized in that the delivery pump (24) and the turbine (12) are driven by the same motor (13). Machine selon la revendication 3 ou 4, caractérisée par le fait que la conduite (27) reliant la pompe de refoulement (24) à la cuve est reliée (30), à proximité de la cuve (2), au circuit de séchage.Machine according to claim 3 or 4, characterized in that the line (27) connecting the delivery pump (24) to the tank is connected (30), near the tank (2), to the drying circuit. Machine selon la revendication 1 ou 2, avec une vanne (15) disposée à l'entrée du circuit de vidange (5), caractérisée par le fait que le circuit de séchage comporte une vanne (22) disposé dans sa branche (8'') reliée à l'entrée du circuit de vidange, et que la turbine assure la vidange et la circulation d'air de séchage.Machine according to claim 1 or 2, with a valve (15) disposed at the inlet of the drainage circuit (5), characterized in that the drying circuit comprises a valve (22) disposed in its branch (8 '' ) connected to the inlet of the drainage circuit, and that the turbine ensures the emptying and circulation of drying air. Machine selon l'une des revendications 1 à 6, caractérisée par le fait que le fond de la cuve (2) est relié par une conduite (18, 23) au circuit de vidange (5, 5'').Machine according to one of claims 1 to 6, characterized in that the bottom of the tank (2) is connected by a pipe (18, 23) to the drainage circuit (5, 5 ''). Machine selon l'une des revendications 1 à 6, caractérisée en ce que le circuit de séchage (4, 4'') est directement relié (14, 21) au fond de la cuve.Machine according to one of claims 1 to 6, characterized in that the drying circuit (4, 4 '') is directly connected (14, 21) to the bottom of the tank. Machine selon l'une des revendications précédentes, caractérisé par le fait que le condenseur (9) est alimenté en eau de refroidissement par le réseau de distribution d'eau (28).Machine according to one of the preceding claims, characterized in that the condenser (9) is supplied with cooling water by the water distribution network (28).
EP95400394A 1994-02-25 1995-02-24 Washing and drying machine with a high air flow drying circuit Ceased EP0669417A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9402195 1994-02-25
FR9402195A FR2716686B1 (en) 1994-02-25 1994-02-25 Washing machine dryer with drying circuit with high air flow.

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EP0669417A1 true EP0669417A1 (en) 1995-08-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816550A1 (en) 1996-07-05 1998-01-07 Esswein S.A. Heating method and device for a washing/drying machine
ITPR20130110A1 (en) * 2013-12-30 2015-07-01 Indesit Co Spa APPLIANCES AND WASHING AND DRYING METHOD OF CLOTHS.
WO2017114631A1 (en) * 2015-12-29 2017-07-06 Arcelik Anonim Sirketi A washer dryer comprising a heating means and the control method thereof
IT201700016266A1 (en) * 2017-02-14 2018-08-14 Paolo Fornasari CIRCULATION SYSTEM OF LIQUIDS AND / OR AIR FOR WASHING MACHINES WITH FRONTAL CHARGE

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Publication number Priority date Publication date Assignee Title
US2881609A (en) * 1953-11-16 1959-04-14 Gen Motors Corp Combined clothes washing machine and dryer
FR2417575A1 (en) * 1978-02-17 1979-09-14 Lepper Gmbh Masch App WASHING AND DRYING MACHINE
EP0290997A1 (en) * 1987-05-11 1988-11-17 I.R.C.A. S.p.A. INDUSTRIA RESISTENZE CORAZZATE E AFFINI Device for water discharge and ventilation in washing machines
WO1990012971A1 (en) * 1989-04-21 1990-11-01 Ciapem Appliance fitted with a device for gas-tight separation of gaseous fluids

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881609A (en) * 1953-11-16 1959-04-14 Gen Motors Corp Combined clothes washing machine and dryer
FR2417575A1 (en) * 1978-02-17 1979-09-14 Lepper Gmbh Masch App WASHING AND DRYING MACHINE
EP0290997A1 (en) * 1987-05-11 1988-11-17 I.R.C.A. S.p.A. INDUSTRIA RESISTENZE CORAZZATE E AFFINI Device for water discharge and ventilation in washing machines
WO1990012971A1 (en) * 1989-04-21 1990-11-01 Ciapem Appliance fitted with a device for gas-tight separation of gaseous fluids

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816550A1 (en) 1996-07-05 1998-01-07 Esswein S.A. Heating method and device for a washing/drying machine
FR2750709A1 (en) * 1996-07-05 1998-01-09 Esswein Sa HEATING METHOD AND DEVICE FOR A DRYING WASHING MACHINE
ITPR20130110A1 (en) * 2013-12-30 2015-07-01 Indesit Co Spa APPLIANCES AND WASHING AND DRYING METHOD OF CLOTHS.
WO2015101873A1 (en) * 2013-12-30 2015-07-09 Indesit Company S.P.A. Household appliance and method for washing and drying laundry
WO2017114631A1 (en) * 2015-12-29 2017-07-06 Arcelik Anonim Sirketi A washer dryer comprising a heating means and the control method thereof
IT201700016266A1 (en) * 2017-02-14 2018-08-14 Paolo Fornasari CIRCULATION SYSTEM OF LIQUIDS AND / OR AIR FOR WASHING MACHINES WITH FRONTAL CHARGE

Also Published As

Publication number Publication date
FR2716686B1 (en) 1996-08-30
FR2716686A1 (en) 1995-09-01

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