FR2481721A1 - WASHING, SPINNING AND DRYING MACHINE - Google Patents

Abstract

THE INVENTION RELATES TO A MACHINE FOR WASHING, SPINING AND DRYING LAUNDRY. IN THE SAID MACHINE, AT THE BOTTOM OF LAUNDRY TANK 1, A HEATING DEVICE 5 IS USED TO PRODUCE HEAT DURING THE WASHING OF THE LAUNDRY AND TO ENSURE THE HEATING BY RADIATION WHEN DRYING. A CONDENSER 6, PLACED ABOVE TANK 1, COMMUNICATES WITH THE LATTER 1 THROUGH A STEAM EXHAUST PORT 7 IN THE UPPER REGION OF SAID TANK 1. THIS CONDENSER 6, BROUGHT THROUGH THE STEAM ESCAPING FROM THE LAUNDRY, IS CONNECTED TO THE MACHINE'S DRAINAGE SYSTEM BY A CONDENSATE DRAIN 1 CONDENSATE COLLECTED. APPLICATION TO COMBINED LAUNDRY WASHING AND DRYING MACHINES.

Description

248 172 1

  The present invention relates to a machine for washing, spinning and drying laundry, of the type equipped with a drum, a heating device and a washing device.

  condensation of the moist steam that emerges from

  drying. In combined washing and washing machines

  the drying process, at the completion of the process,

  washing, is linked to a whole series of problems. Since, on the one hand, it is necessary to ensure a supply of heat necessary to cause the vaporization of moisture contained in the laundry and that, on the other hand,

  cooling must be provided to ensure the condensation

  It is understandable that no washing and drying machine is currently available on the market with a degree of efficiency which is cost-effective in comparison with its

energy consumption.

  DE-PS-2 529 577 discloses a washing and drying drum machine in which a radiation-operated heating register is mounted in the upper part of the laundry tank, while cooling surfaces for the condensation are arranged in the lower region of this laundry tank. During the drying operation, a

  forced air circulation is maintained by means of a

  flante, so that one can take advantage of the advantages of a

  radiant heating combined with the principle of a

  air. However, in return, this form of

  realization has the disadvantage of provoking mandatory

  significant loss of the sensible part of the energy in an air circulation system serving both

  heating and cooling. In addition, a great deal

  summation of water is necessary to ensure cooling.

  In a known dryer, proposed by DE-PS-2 628 182, it is precisely sought to avoid the aforementioned losses by practically doing a separation between the heating circuit and the vaporization circuit. In this case, an unperforated drum is used, which is heated by the circulating hot air and entrains the steam which is

  generated by a low-power blower in a conden-

  located below the casing of said drum. Certainly,

  this system makes it possible to hope for a more favorable energy balance

  but it is not appropriate for a washing machine and dryer, because of the presence of

unperforated drum.

  The subject of the present invention is therefore a washing and drying drum machine of the aforementioned type, in which the drying process takes place with a more

  high efficiency compared to known systems.

  According to the essential characteristics of the

  vention, a heating device, housed in the area

  bottom of the laundry tank, serves to ensure the heating

  fage during washing as well as heating. by

  radiation) during the. drying process; a disc

  positive condensation, mounted above said tank of

  laundry is connected to this tank through an evacuation port

  steam, formed in the upper region of said laundry tank, and this condensation device is traversed by the steam that emerges from the laundry; and said condensation device is connected to the evacuation system of the machine via an evacuation duct of the

condensate collected.

  According to other features of the invention

  the heating device consists of three ele-

  heating elements juxtaposed, two of said elements being electrically connected in series during the washing process, while the three elements are electrically connected in series during the drying process; the condensation device consists of a

  condenser cooled by fresh air from a fan

  the steam rising from the lye tank and saturated with water passing through the cooling coil of said condenser;

  a relatively weak blower

  to promote the evacuation of steam; said condenser is connected to said laundry reservoir by a bellows-shaped connecting conduit;

248 172 1

  the condensate collected in the condenser is N directed into the housing housing a felt filter and pumped out at regular intervals by the laundry pump; and the cooling air stream, when

  leaving said condenser, is directed through the interstitial space

  the envelope of the machine, in order to ensure the cooling

  dissipation of heat-sensitive organs, and is evacuated in the lower region of the washing machine

and drying.

  The embodiment according to the invention allows

  take advantage of a range of benefits in a

  China washing and drying laundry. The heating device, acting on the principle of heat radiation, ensures an intense heat supply of treatment, resulting in a very fast

  vaporization of moisture contained in the laundry.

  The water vapor that is then discharged from the laundry reservoir contains a high proportion of moisture and only a small percentage of air, which again promotes condensation and causes only slight heat dissipation. The invention will be described in more detail with reference to the accompanying drawings by way of non-limiting example and in which the single figure schematically illustrates in section a washing machine and dryer, which can be

loaded from the front.

  In the washing tank 1 of a machine 2 for washing and drying laundry, a drum 3 for receiving the laundry rotates in a conventional manner and is driven by a motor 4. In the lower region of the tank 1 of laundry, there is a heater 5, which can

  have several heated tubular elements juxtaposed.

  In an advantageous embodiment, three heating tubular elements of this type are provided. The heating is provided during the washing process by a series electrical connection of two heating elements, while the series connection of the three of said elements causes a reduction in power and thus gives rise to a

  heating source suitable for drying.

  The transmission of heat to the laundry to be dried is provided by radiation, while the drum 3 is rotating.

  Above Laundry Reservoir 1, in the enven-

  machine, there is a condenser 6 cooled by

  air. Of course, it would also be possible to

  water-cooled denser, but air-cooling

  is best to avoid water consumption. The con-

  6 is connected to a steam evacuation port 7 in the upper region of the tank 1. The vapor escaping from the laundry during the drying of the latter

  is directed by a connection duct 8 in the form of

  flounder, in a cooling coil 9 of said condenser.

  The fresh air necessary for the cooling of this condenser 6 is supplied to it by a fan 10. The vapor rising in the cooling coil 9 can condense therein and the condensate collected flows, via a exhaust duct 11, in a housing 12, housing the felt filter, of the machine. From this, this condensate may, in a preferred embodiment of the invention, be evacuated

  at regular intervals by a laundry pump 13. Soft-

  The natural ascending habit of steam is used to evaluate

  remove the latter from the laundry tank 1. To favor

  If the circulation of steam is low, a relatively weak blower 14 can be used. In any case, the aim is to evacuate, as far as possible, through a relatively small orifice 7, only the steam saturated with water, so that, under these conditions, so little energy

  as possible during the drying process.

  In addition, the condensation of a saturated vapor is consid-

easily facilitated.

  Instead of using individual fans

  10 and 14, it would also be possible to envisage a combination

  fan, in which case the drive motor shaft

  cooling fan would support

  at the same time the fins of the exhaust fan.

  The suction of the cooling air (arrow A) is preferably provided in the rear region of the washing and drying machine. After it has passed through the condenser, the cooling air can be directly evacuated to the front of the machine, but the current

  cooling air could also pass through the

  machine and be evacuated in the lower region of the machine, to cool areas sensitive to

the heat.

  The small flow of exhaust air (arrow B) caused by the blower 14 is conveniently discharged to the

posterior side of the machine.

  It goes without saying that many modifications can

  can be made to the machine described and shown without

depart from the scope of the invention.

Z481721

Claims (7)

  1. Washing machine, spinning and drying machine, equipped with a drum, a heater and a device for condensing wet steam escaping from the laundry during the drying of the latter, machine characterized by the combination of the following characteristics: a) in the lower region of the reservoir (1) of   laundry, a heating device (5) serves to provide heating   during washing and heating, by radiation from each   their during the drying process; b) a condensing device (6) is located above said laundry tank (1);   c) said condensation device (6) is connected   strung to said tank (1) via a steam outlet (7) in the upper region of said tank (1), and this device is traversed by the vapor escaping from the laundry; and   d) said condensing device (6) is connected   rope to the flow system of the machine through a duct   discharge (11) collected condensate.   Machine according to claim 1, characterized in that the heating device (5) consists of three   juxtaposed heating elements, two of which are electrically   in series during the washing process and three   are connected in series during the drying process.   3. Machine according to claim 1, characterized in that the condensation device (6) consists of a   condenser cooled by air, said cooling air   from a fan (10), and that the vapor rising from the lye reservoir (1) and saturated with water   runs through the cooling coil (9) of said condenser.   4. Machine according to one of claims 1 and 3,   characterized in that a blower (14) relatively   powerful promotes the evacuation of steam.   5. Machine according to one of claims 1 and 3,   characterized in that the condenser (6) is connected to the reservoir   see (1) laundry by a conduit (8) bellows.   6. Machine according to claim 1, characterized in that the condensate collected by the condenser (6) is directed towards the housing (12) housing the felt filter and   discharged at regular intervals by the laundry pump (13).   7. Machine according to one of claims i and 3,   characterized in that, after leaving the condenser (6), the cooling air stream circulates in the internal space of the machine casing, in order to cool the organs subjected to the adverse effects of the heat, to then be evacuated in the lower region of the machine (2) washing and drying.