Abstract: There is described a control system (15) for controlling unbalance of the wash assembly (5) in a vertical-rotation-axis washing machine (1), wherein a wash assembly (5) is housed inside a casing (2), and has a wash drum (8) rotating about an axis of rotation (R) substantially parallel to a vertical reference axis (V), and an electric drive unit (12) for rotating the wash drum (8) about the relative axis of rotation (R); said control system has first computing blocks (19, 20, 21) for determining a number of operating quantities (Cm(t), J, alpha (t)) associated with rotation of the wash drum (8), and for determining, as a function of the quantities, the time pattern of the amplitude (h(t)) of vertical oscillation of the centre of mass (B) of the wash assembly (5) in a first direction substantially parallel to the vertical reference axis (V); and a second computing block (23) for determining the maximum amplitude (H) of vertical oscillation of the wash assembly (5) within a given time interval (T); the second co

Abstract: Laundry washing machine (1) provided with a casing (2) and with a vibration damper (7) which is fixed to the casing (2) so as to reduce vibrations transmitted to the latter; the vibration damper (7) comprising a supporting frame (8) rigidly fixed to the casing (2), an oscillating mass (9) housed inside the supporting frame (8), and at least one block (10) of viscoelastic polymeric gel interposed between the oscillating mass (9) and the supporting frame (8) to floating support the oscillating mass (9).

Abstract: There is described a control system (15) for controlling unbalance of the wash assembly (5) in a vertical-rotation-axis washing machine (1), wherein a wash assembly (5) is housed inside a casing (2), and has a wash drum (8) rotating about an axis of rotation (R) substantially parallel to a vertical reference axis (V), and an electric drive unit (12) for rotating the wash drum (8) about the relative axis of rotation (R); said control system has first computing blocks (19, 20, 21) for determining a number of operating quantities (Cm(t), J, alpha (t)) associated with rotation of the wash drum (8), and for determining, as a function of the quantities, the time pattern of the amplitude (h(t)) of vertical oscillation of the centre of mass (B) of the wash assembly (5) in a first direction substantially parallel to the vertical reference axis (V); and a second computing block (23) for determining the maximum amplitude (H) of vertical oscillation of the wash assembly (5) within a given time interval (T); the second co

Abstract: Provided is a method of minimizing an unbalanced load of laundry within a clothes laundering machine before a high-speed spinning phase. The method includes rotating a drum of the clothes laundering machine at a suitable rotational speed to initially retain at least a portion of the laundry within the drum against an inner surface of the drum; and determining that an unbalanced distribution of the laundry exists within the drum. In response to determining that the unbalanced distribution of laundry exists within the drum, initiating a laundry distribution phase to redistribute the laundry within the drum to reduce at least one of the unbalance mass to a level that is less than or equal to a maximum allowable mass value, and the elevation torque to a level that is less than or equal to a maximum allowable elevation torque.

Abstract: Laundry washing machine (1) provided with a casing (2) and with a vibration damper (7) which is fixed to the casing (2) so as to reduce vibrations transmitted to the latter; the vibration damper (7) comprising a supporting frame (8) rigidly fixed to the casing (2), an oscillating mass (9) housed inside the supporting frame (8), and at least one block (10) of viscoelastic polymeric gel interposed between the oscillating mass (9) and the supporting frame (8) to floating support the oscillating mass (9).

Abstract: Provided is a method of minimizing an unbalanced load of laundry within a clothes laundering machine before a high-speed spinning phase. The method includes rotating a drum of the clothes laundering machine at a suitable rotational speed to initially retain at least a portion of the laundry within the drum against an inner surface of the drum; and determining that an unbalanced distribution of the laundry exists within the drum. In response to determining that the unbalanced distribution of laundry exists within the drum, initiating a laundry distribution phase to redistribute the laundry within the drum to reduce at least one of the unbalance mass to a level that is less than or equal to a maximum allowable mass value, and the elevation torque to a level that is less than or equal to a maximum allowable elevation torque.

Abstract: Washing machine comprising a rotating drum, an electric motor apt to put the drum into rotation, measurement means of the drum rotational speed, means able to detect the torque provided by said motor, computing and control means able to determine and control the instantaneous speed of the drum, wherein, before of the spinning phase, said computing and control means activates the machine into rotation at a predefined speed (Wmain) with the laundry retained on the drum inner wall, compute the static unbalance (m) and the elevation moment (Mel), check if both the following conditions are met: the static unbalance mass (m) is less than a pre-determined value and the absolute value of the elevation moment is less of a predetermined value; if at least one of the unbalancing mass values, or one of the values of said elevation momentum (Mel) are higher than a predetermined respective values, said computing means calculate the difference between the value of said unbalancing mass and the respective said predetermined