Method for Washing Laundry in a Laundry Washing Machine and Laundry Washing Machine

Abstract

A method is provided for washing laundry in a laundry washing machine having a washing tub external to a rotatable washing drum into which the laundry to be washed is loaded. The method includes the steps of: providing a quantity of detergent; providing a first quantity of water to form with the quantity of detergent a quantity of washing solution; introducing the washing solution into the washing tub; recirculating the washing solution inside the washing tub by means of recirculation means until the washing solution is absorbed by the loaded laundry inside the washing drum and the level of the washing solution is below the washing drum; activating heating means for heating the wetted loaded laundry inside the washing drum; deactivating the heating means and maintaining the heated wetted loaded laundry inside the washing drum for a predetermined dry maintenance time; supplying a second quantity of water in the washing tub; rotating the washing drum; and rinsing the loaded laundry by means of drum rotations and by means of liquid drainage from the washing tub.

1 . A method for washing laundry in a laundry washing machine comprising a washing tub external to a rotatable washing drum wherein the laundry to be washed is loaded, wherein the method comprises the steps of:
 providing a quantity of detergent;   providing a first quantity of water to form with said quantity of detergent a quantity of washing solution;   introducing said washing solution into said washing tub;   recirculating said washing solution inside said washing tub by means of recirculation means until said washing solution is absorbed by said loaded laundry inside said washing drum and the level of said washing solution is below said washing drum;   activating heating means for heating said wetted loaded laundry inside said washing drum;   deactivating said heating means and maintaining said heated wetted loaded laundry inside said washing drum for a predetermined dry maintenance time;   supplying a second quantity of water in said washing tub;   rotating said washing drum; and   rinsing said loaded laundry by means of drum rotations and by means of liquid drainage from said washing tub.   
     
     
         2 . The method according to  claim 1 , further comprising a rotation phase of said washing drum during at least one of the following steps of:
 recirculating said washing solution inside said washing tub,   heating said wetted loaded laundry inside said washing drum, and   maintaining said heated wetted loaded laundry inside said washing drum for a predetermined dry maintenance time.   
     
     
         3 . The method according to  claim 1 , further comprising carrying out a recirculating phase of liquid inside said washing tub after said phase of supplying a second quantity of water in said washing tub. 
     
     
         4 . The method according to  claim 1 , further comprising carrying out a further phase of providing a pre-wetting quantity of water inside said washing tub in order to wet said loaded laundry before said phase of introducing said washing solution into said washing tub. 
     
     
         5 . The method according to  claim 6 , further comprising carrying out a recirculating phase of water inside said washing tub after said phase of providing a pre-wetting quantity of water. 
     
     
         6 . The method according to  claim 1 , wherein said heating phase comprises heating said loaded laundry with hot air. 
     
     
         7 . The method according to  claim 1 , wherein said heating phase comprises heating said loaded laundry with steam. 
     
     
         8 . The method according to  claim 1 , wherein the ratio between said first quantity of water and the dry weight of the loaded laundry is between 1 and 3 litres/kg. 
     
     
         9 . The method according to  claim 1 , wherein the ratio between said second quantity of water and the dry weight of the loaded laundry is comprised between 0.5 and 1.1 litres/kg. 
     
     
         10 . The method according to  claim 4 , wherein said pre-wetting quantity of water is determined based on the quantity and/or on the type of said loaded laundry. 
     
     
         11 . The method according to  claim 4 , wherein the ratio between the sum of the pre-wetting quantity of water and the first quantity of water and the dry weight of the loaded laundry is between 1 and 3 litres/kg. 
     
     
         12 . The method according to  claim 1 , further comprising carrying out a mixing phase in which said quantity of detergent and said first quantity of water are mixed to form said washing solution, said mixing phase taking place before said phase of introducing said washing solution into said washing tub. 
     
     
         13 . The method according to  claim 12 , wherein said mixing phase takes place in at least one of the following:
 a drawer of said laundry washing machine suitable to contain washing and/or rinsing products,   a container suitable to receive water and to receive detergent from a drawer of said laundry washing machine suitable to contain washing and/or rinsing products, and   said washing tub after said phase of introducing said washing solution into said washing tub.   
     
     
         14 . The method according to  claim 12 , wherein said mixing phase is carried out by means of a recirculating device. 
     
     
         15 . The method according to  claim 14 , wherein said recirculating device comprises a recirculating circuit provided with a recirculating pump. 
     
     
         16 . The method according to  claim 4 , wherein said recirculating device comprises a mixer device. 
     
     
         17 . A laundry washing machine configured to implement the method according to  claim 1 . 
     
     
         18 . The method according to  claim 2 , further comprising carrying out a recirculating phase of liquid inside said washing tub after said phase of supplying a second quantity of water in said washing tub. 
     
     
         19 . The method according to  claim 2 , further comprising carrying out a further phase of providing a pre-wetting quantity of water inside said washing tub in order to wet said loaded laundry before said phase of introducing said washing solution into said washing tub. 
     
     
         20 . The method according to  claim 2 , wherein said heating phase comprises heating said loaded laundry with hot air.