EP0669417A1 - Waschtrockner mit Trockenkreislauf von hohem Luftdurchsatz - Google Patents

Waschtrockner mit Trockenkreislauf von hohem Luftdurchsatz 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
Authority
EP
European Patent Office
Prior art keywords
circuit
drying
turbine
machine
tank
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.)
Ceased
Application number
EP95400394A
Other languages
English (en)
French (fr)
Inventor
Pascal Chabanne
Jean-Francis Clement
Marie-Gérard Merlet
Daniel Remeur
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.)
Esswein SA
Original Assignee
Esswein SA
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 Esswein SA filed Critical Esswein SA
Publication of EP0669417A1 publication Critical patent/EP0669417A1/de
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP95400394A 1994-02-25 1995-02-24 Waschtrockner mit Trockenkreislauf von hohem Luftdurchsatz Ceased EP0669417A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9402195 1994-02-25
FR9402195A FR2716686B1 (fr) 1994-02-25 1994-02-25 Lave-linge séchant à circuit de séchage à débit d'air élevé.

Publications (1)

Publication Number Publication Date
EP0669417A1 true EP0669417A1 (de) 1995-08-30

Family

ID=9460445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400394A Ceased EP0669417A1 (de) 1994-02-25 1995-02-24 Waschtrockner mit Trockenkreislauf von hohem Luftdurchsatz

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EP (1) EP0669417A1 (de)
FR (1) FR2716686B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816550A1 (de) 1996-07-05 1998-01-07 Esswein S.A. Heizverfahren und -vorrichtung für Waschtrockner
ITPR20130110A1 (it) * 2013-12-30 2015-07-01 Indesit Co Spa Elettrodomestico e metodo di lavaggio e asciugatura di panni.
WO2017114631A1 (en) * 2015-12-29 2017-07-06 Arcelik Anonim Sirketi A washer dryer comprising a heating means and the control method thereof
IT201700016266A1 (it) * 2017-02-14 2018-08-14 Paolo Fornasari Sistema di circolazione di liquidi e/o aria per lavabiancheria a carica frontale

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 (fr) * 1978-02-17 1979-09-14 Lepper Gmbh Masch App Machine a laver et secher le linge
EP0290997A1 (de) * 1987-05-11 1988-11-17 I.R.C.A. S.p.A. INDUSTRIA RESISTENZE CORAZZATE E AFFINI Vorrichtung zur Wasserabfuhr und Lüftung von Waschmaschinen
WO1990012971A1 (fr) * 1989-04-21 1990-11-01 Ciapem Appareil muni d'un dispositif de separation etanche aux fluides gazeux

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 (fr) * 1978-02-17 1979-09-14 Lepper Gmbh Masch App Machine a laver et secher le linge
EP0290997A1 (de) * 1987-05-11 1988-11-17 I.R.C.A. S.p.A. INDUSTRIA RESISTENZE CORAZZATE E AFFINI Vorrichtung zur Wasserabfuhr und Lüftung von Waschmaschinen
WO1990012971A1 (fr) * 1989-04-21 1990-11-01 Ciapem Appareil muni d'un dispositif de separation etanche aux fluides gazeux

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816550A1 (de) 1996-07-05 1998-01-07 Esswein S.A. Heizverfahren und -vorrichtung für Waschtrockner
FR2750709A1 (fr) * 1996-07-05 1998-01-09 Esswein Sa Procede et dispositif de chauffage pour machine a laver sechante
ITPR20130110A1 (it) * 2013-12-30 2015-07-01 Indesit Co Spa Elettrodomestico e metodo di lavaggio e asciugatura di panni.
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 (it) * 2017-02-14 2018-08-14 Paolo Fornasari Sistema di circolazione di liquidi e/o aria per lavabiancheria a carica frontale

Also Published As

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

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