Abstract: Method for automatically controlling a pumping station of a fluid circulation system with flowrate control valves, comprising the following control steps which are cyclically repeated: (b) driving said pumping station in accordance with a set curve belonging to a group of predefined driving curves; (c) monitoring over time the variation in flowrate of fluid circulating in the system at the pumping station, or a parameter related thereto; (d) if, during the monitoring step (c), the variation in flowrate exceeds or falls below a control threshold and if said condition is maintained for a stabilization time, (e) modifying the set driving curve, replacing it with another curve from the plurality of driving curves; and (f) reinitializing the monitoring step (c) from a new working point reached by the pumping station.

Abstract: A method for collecting condensate inside an apparatus, including: providing a condensate collection system with bottom and top collection tanks; a condensate discharge pump to displace liquid from the bottom collection tank to the top collection tank; and an overflow system which displaces the liquid contained in the top collection tank that exceeds an overflow level into the bottom collection tank; collecting a condensed liquid in the bottom collection tank; actuating the condensate discharge pump to displace the condensed liquid from the bottom collection tank into the top collection tank; detecting a low load condition of the condensate discharge pump, actuation of the condensate discharge pump being interrupted upon detection of the low load condition; the actuating time (T2) of the condensate discharge pump, with signalling of a full condition of the condensate collection system when this actuating time (T2) is equal or larger than a maximum time (T2lim).

Abstract: A support (200) is described for fixing an electric motor (3) to a tub (6) of a washing machine (1) or similar household appliance. The electric motor (3) is of the type with external rotor (70), for driving in rotation a drum (2) supported in the tub (6); the electric motor (3) is provided with a control circuit board (100) associated with a heat dissipator (33). The heat dissipator (33) is integrally formed with the support (33).

Abstract: The invention relates to a permanent-magnet two-phase synchronous electric motor (1) with mechanical start-up for washing machines and similar, in particular for washing pumps (2), of the type centrally comprising a permanent magnet axial rotor (4) and a stator (5) with a lamination pack core (16) and a double pair of pole pieces (20) with ends enveloping said rotor (4) and with relative windings (L1, L2), wherein the first pair of pole pieces is asymmetrical compared to the second pair of pole pieces. Moreover, said motor is further distinguished for the structure of the stator, which comprises the following characteristics: the ends of the pole pieces (20) are structurally independent and are removably coupled to the lamination pack core; and the lamination pack core has a shorter axial length than the ends of the pole pieces (20). Advantageously, the pole pieces of the stator (5) are obtained by pressing of magnetic powders.

Abstract: A fixing device for fixing a flexible tube to an aquarium tank, of the type including a support element for the flexible tube having a substantially U-like curved shape and suitable to be engaged astride an edge of the tank. The support element includes a first half-shell and a second half-shell juxtaposed to each other to form a housing seat of predetermined section for housing the flexible tube.

Abstract: A washing machine, with an unusually easy assembly, having an electric motor with a central axis and a washing tank having a fixing bracket, to fix the electric motor to the tank. The fixing bracket includes a first arm and a second arm. The machine has structure associated with at least one of the first and second arms to lock the central axis of the motor. The insertion of the central axis in the arm and the locking thereof are shown in different embodiments.

Abstract: Synchronous electric motor (3) for washing-machines (1) and similar household appliances with rotary drum (2), of the type comprising an inner stator (5) having relative stator windings (9) mounted fixed on a central axis (10), an electronic control board (18) electrically connected to the stator, and a heat sink element (20) associated with the electronic board (18). The heat sink element (20) is mounted on the stator (5) in an axial extension thereof and spaced therefrom. The electronic control board (18) is supported by the heat sink (20) on a side facing the stator (5).

Abstract: A detecting device of unbalance conditions, particularly for washing machines (1) and similar household appliances comprising a rotary drum (2a) supported by a tank (2) and activated by a synchronous electric motor (3) with an internal stator (5) having corresponding windings fixedly mounted on a central axis (10). The detecting device comprises an electronic control board (18) for the synchronous motor (3) associated with the stator (5) and incorporating at least one accelerometer (51) to constantly monitor the acceleration of said tank (2) and indirectly the unbalance of said washing machine (1) and the unbalance of a load comprised in the rotary drum (2a).

Abstract: A method drives a synchronous electric motor, particularly to start a fan/exhaust fan. The method includes measuring the supply voltage value of the electric motor windings being proportional to the mass flow rate. The method also includes measuring a real load angle, by a signal coming from a Hall sensor associated with the motor rotor; performing a comparison with an optimal load angle corresponding to a reference mass flow rate of fluid being exhausted; and changing the voltage value and the operating frequency applied to the electric motor up to reach a value of the real load angle corresponding to said optimal load angle value.

Abstract: A device for transmitting motion between the rotor of a synchronous permanent-magnet motor and the working part, having an increased free rotation angle, which comprises at least two motion transmission couplings which mutually cooperate in a kinematic series. Each coupling is constituted by at least one driving element which is eccentric with respect to the rotation axis and is rigidly coupled to a first component of the motion transmission system and by at least one driven element, which is also eccentric with respect to the rotation axis and is rigidly coupled to the component arranged kinematically after the preceding one. The angle covered by the elements of each coupling is, as a whole, less than a round angle. The intermediate components of the kinematic transmission have both a driven element and a driving element for receiving the motion from the preceding one and transmitting it to a subsequent one.