Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F58/00—Domestic laundry dryers
  • D06F58/20—General details of domestic laundry dryers 
  • D06F58/24—Condensing arrangements

Definitions

• the present invention relates to a water-saving device for washing-drying machines.
• Machines termed washing-drying machines with closed-cycle air circulation which comprise an air circulation device which starts to operate at the end of the washing cycle and after spi -drying, for drying the laundry completely.
• the air enters the tank, where the laundry is heated by a radiating element, removes the moisture, passes through the holes of the drum along the discharge ducts, and then rises up to the fan, which pushes the air back into the tank.
• the air by passing through the warm laundry, removes the moisture and, by passing through the discharge duct, makes contact with the cooling water and consequently deposits the moisture. This cycle is repeated for approximately 100-120 minutes until the laundry is perfectly dry.
• the air is pushed by a fan in contact with a resistor which heats it.
• the air is then fed into the drum, where, in contact with the wet laundry, it becomes loaded with moisture.
• This moisture-rich air then passes in a condenser, which is kept humid and cold by a jet of water, and deposits the moisture inside said condenser.
• the condenser is generally constituted by a substantially vertical duct, wherein the current of warm and moist air coming from the lower end is intercepted by a film of water co ing from the upper end.
• the film of water cools the warm air causing the condensation of the moisture.
• the water also captures ' and removes the fluff, which has deposited on the duct walls. This fluff is then disposed of together with the discharge water.
• the water thus acts as cooling means and as means for washing the condensation ducts in known drying systems.
• the aim of the present invention is to provide a washing- drying machine which has a considerably lower water consumption than known machines.
• a water-saving device for washing-drying machines which comprises a condenser element connected t the tank of the machine, aspirator means connected to said condenser so that the moist air which is present in said tank is fed into said condenser and subsequently fed into said tank, characterized in that it comprises a cooling duct arranged adjacent to said condenser element, and ventilation means adapted to generate a flow of air in said cooling duct so as to cool said condenser in order to condense the moisture of said air fed into said condenser.
• Figure 1 is a sectional side view of a washing-drying machine according to the invention, having an external cooling duct;
• Figure " is a view, similar to l l ⁇ e preced' 1 : .?g one, of a machine cording to another aspec of the in ntion, having an internal cooling duct;
• Figure 3 is a view, similar to the preceding one, of a machine according to a third aspect of the invention, having a dual internal and external cooling duct;
• Figure 4 is a view, similar to the preceding ones, of a machine according to a fourth aspect of the invention, having a dual cooling duct and with an auxiliary condensation water device.
• a washing-drying machine 1 generally comprises a supporting structure 3 for a tank 5 containing the laundry to be washed and dried.
• the drying and air circulation system comprises a hot-air delivery duct 7 and an electric resistor 9 for heating the air fed to the tank, in a per se known manner.
• the machine comprises an aspiration duct 11 connecting the tank 5 to a condenser 13.
• Condenser 13 is connected to an aspirator 15 and to the delivery duct 7, in a per se known manner.
• a discharge duct 21 is connected to the tank 5, in order to discharge the water, and to the condenser 13.
• the machine according to the invention comprises a cooling duct 17 which is external and coaxial to the condenser 13.
• the duct 17 has a fan 19 for generating an air current in the cooling duct.
• FIGS 2-4 illustrate different embodiments of the water- saving device according to the invention, which is based on the elimination or substantial reduction of the use of water to cool the condenser.
• the same numerals designate common or substantially similar elements in the different embodiments illustrated.
• FIG. 2 illustrates a machine 101, substantially identical to the machine 1, wherein the cooling duct 117 is internal and coaxial to the condenser 113.
• FIG. 3 illustrates a machine 201, similar to the preceding ones and having a dual cooling duct.
• the dual cooling duct is constituted by an external duct 217a and by an internal duct
• Both ducts 217a, 217b are coaxial to the condenser 213.
• FIG 4 instead illustrates a machine 301 having a dual cooling duct 317, similar to the one of the machine shown in Figure 3.
• Duct 317 is coaxial to the condenser 313 a d comprises an auxiliary cooling device constituted by a nozzle 323 for generating a film of cooling water inside the condenser 313.
• the described machines can also be equipped with a device, for cleaning the condenser and the discharge duct, for example, similar to the one described in the Italian patent no. 1217490 in the name of this same Applicant.
• Said device essentially comprises a jet of cleaning water with a relatively high flow rate.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Detail Structures Of Washing Machines And Dryers (AREA)
• Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
• Treatment Of Fiber Materials (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=11362114

Family Applications (1)

Country Status (5)

Families Citing this family (8)

Family Cites Families (8)

• 1992
  • 1992-02-25 IT ITMI920404A patent/IT1254215B/it active
• 1993
  • 1993-01-19 EP EP93903200A patent/EP0628099A1/de not_active Withdrawn
  • 1993-01-19 JP JP5514479A patent/JPH07503871A/ja active Pending
  • 1993-01-19 WO PCT/EP1993/000112 patent/WO1993017169A1/en not_active Ceased
  • 1993-01-19 KR KR1019940702780A patent/KR100272135B1/ko not_active Expired - Fee Related

Non-Patent Citations (1)

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