Abstract:
A washing and drying machine (1) has a treatment tub (4), for containing articles that are to be washed and dried, and comprises: a washing circuit (5, 10, 11, 12, 21, S), for drawing in a washing liquid from the tub (4) and conveying it back into the tub, the washing circuit (5, 10, 11, 12, S) having a pump (11) and means for heating the washing liquid; a drying circuit (13, 14, 25, 26), for extracting in a forced way air from the tub (4) and conveying it back into the tub, the drying circuit (13, 14, 25, 26) having a first fan (14), means for dehumidifying the air extracted from the tub (4), and means for heating the dehumidified air to be conveyed back into the tub (4); and a heat-pump arrangement (20) having a refrigerating circuit for a refrigerant fluid, which includes a first condenser (21), a first evaporator (22), a first lamination valve (23), and a compressor (24). The means for heating the washing liquid comprise the first condenser (21), and the refrigerating circuit of the heat-pump arrangement (20) further comprises a second condenser (25), in series to the first condenser (21), and a second evaporator (26). The means for dehumidifying the air extracted from the tub (4) comprise the second evaporator (26), and the means for heating the dehumidified air to be conveyed back into the tub (4) comprise the second condenser (25).
Abstract:
It is described a method for controlling filling with water of a water-conducting electric household appliance (1) having a control system (17), such as a dishwashing machine or a laundry washing machine. After the start of a treatment program of the electric household appliance (1): the control system (17) controls opening of a loading valve (12) set on a line (11, 14) for conveying water to a treatment container (3) of the electric household appliance (1); the control system (17) monitors a sensor (13) prearranged for detecting conveyance of water to the treatment container (3); in presence of a signal from the sensor (13), the control system evaluates if such signal is usable for the purposes of water dosage, or compatible with a predetermined value or range of values, and, in the negative case, the control system (17) provides for carrying out corrective actions.
Abstract:
A dishwashing machine having a drying system comprises a basement (2) and a wash tub (3) supported by the basement (2). The drying system comprises: - an inlet (20-22) for introducing drying air into the tub (3); - an outlet for evacuating damp air from the tub (3); - a condenser device (31 ), having a hollow body provided with a respective inlet, in fluid communication with the outlet for the damp air, and a respective outlet, in fluid communication with the environment external to the tub (3), the condenser device (31 ) having a first portion (34) that generally faces a side wall (3d) of the tub (3) and that defines a condensation path for the damp air leaving the tub (3); - a fan ( 1 1), comprising a casing ( 12) housed in which is an impeller ( 13) driven by a corresponding motor, the casing (12) being mounted in the basement (2); and - means for heating the drying air, operatively set along a first conduit (1 5) that connects the delivery of the fan (1 1 ) to the inlet for the drying air (20-22). The inlet for the drying air (20-22) includes a chimney (21 ), which extends through the lower wall (3a) of the tub (3) and has an upper end and a lower end (21 b) coupled to which are, respectively, a chimney lid (22) and an outlet end of the first conduit (15). The outlet for the damp air is defined in the upper wall (3b) of the tub (3), and the condenser device (3 1 ) comprises a second portion (35) that extends between the outlet for the damp air and an upper region of the first portion (34) of the condenser device (31).
Abstract:
A method for controlling filling with water of a water-conducting electrical household appliance (1; 1') having a control system (17), such as a dishwashing machine or a laundry washing machine. After the start of a treatment program of the electrical household appliance (1, 1') the following steps are provided: a) the control system (17) activates the motor of a washing pump (4) and drives it to a first speed; b) after elapsing of a first time interval the control system (17) controls the opening of a loading valve (12) set on a line (11, 14) for conveying water to a treatment container (3) of the electrical household appliance (17), monitors a signal characteristic of the operation of the motor of the pump (4) and starts a time counter; c) when the signal characteristic of the operation of the motor of the pump (4) reaches a first predefined value, the control system (17) controls the closing of the loading valve (12) and stops the time counter; d) the control system (17) calculates a flow-rate value in function of the value assumed by the time counter and calculates, in function of the calculated flow-rate value, a second time interval of opening of the loading valve (12), required to obtain a predetermined volume or level of filling with water of the treatment container (3); e) the control system (17) controls a new opening of the loading valve (12), and f) upon elapsing of the second time interval, the control system (17) controls closing of the loading valve (12).
Abstract:
It is described a method for controlling filling with water of a water- conducting electric household appliance (1) having a control system (17), such as a dishwashing machine or a laundry washing machine. After the start of a treatment program of the electric household appliance (1): a) the control system (17) controls opening of a loading valve (12) set on a line (11, 14) for conveying water to a treatment container (3) of the electric household appliance (1); b) the control system (17) monitors a sensor (13) prearranged for detecting conveyance of water to the treatment container (3); c) in the absence of a signal from the sensor (13) until the end of a first time interval after the opening of the loading valve (12), the control system (17) controls activation of a signalling (15, 16); and d) in the absence of a signal from the sensor (13) also until the end of a second time interval that follows the first time interval, the control system (17) controls ending of the treatment program.
Abstract:
The present invention relates to a household appliance comprising a standby switch (10) adapted to take a first standby position, in which it breaks the current flow on a power supply line in order to place the household appliance into standby mode, and a second position, in which the household appliance is operational, a sensor (8) adapted to detect an event which may be associated with a fault of the household appliance, characterised in that it comprises wake-up means (6,11,14) operating when the household appliance is in standby and adapted to bring said standby switch (10) into said second position when said sensor (8) detects said event.
Abstract:
A dishwashing machine having a drying system comprises a basement (2) and a wash tub (3) supported by the basement (2). The drying system comprises: - an inlet (20-22) for introducing drying air into the tub (3); - an outlet for evacuating damp air from the tub (3); - a condenser device (31 ), having a hollow body provided with a respective inlet, in fluid communication with the outlet for the damp air, and a respective outlet, in fluid communication with the environment external to the tub (3), the condenser device (31 ) having a first portion (34) that generally faces a side wall (3d) of the tub (3) and that defines a condensation path for the damp air leaving the tub (3); - a fan ( 1 1), comprising a casing ( 12) housed in which is an impeller ( 13) driven by a corresponding motor, the casing (12) being mounted in the basement (2); and - means for heating the drying air, operatively set along a first conduit (1 5) that connects the delivery of the fan (1 1 ) to the inlet for the drying air (20-22). The inlet for the drying air (20-22) includes a chimney (21 ), which extends through the lower wall (3a) of the tub (3) and has an upper end and a lower end (21 b) coupled to which are, respectively, a chimney lid (22) and an outlet end of the first conduit (15). The outlet for the damp air is defined in the upper wall (3b) of the tub (3), and the condenser device (3 1 ) comprises a second portion (35) that extends between the outlet for the damp air and an upper region of the first portion (34) of the condenser device (31).
Abstract:
A dishwashing machine having a drying system comprises a basement (2) and a wash tub (3) supported by the basement (2). The drying system comprises: - an inlet (20-22) for introducing drying air into the tub (3); - an outlet for evacuating damp air from the tub (3); - a condenser device (31), having a hollow body provided with a respective inlet, in fluid communication with the outlet for the damp air, and a respective outlet, in fluid communication with the environment external to the tub (3), the condenser device (31) having a first portion (34) that generally faces a side wall (3d) of the tub (3) and that defines a condensation path for the damp air leaving the tub (3); - a fan (11), comprising a casing (12) housed in which is an impeller (13) driven by a corresponding motor, the casing (12) being mounted in the basement (2); and - means for heating the drying air, operatively set along a first conduit (15) that connects the delivery of the fan (11) to the inlet for the drying air (20-22). The inlet for the drying air (20-22) includes a chimney (21), which extends through the lower wall (3a) of the tub (3) and has an upper end and a lower end (21b) coupled to which are, respectively, a chimney cap (22) and an outlet end of the first conduit (15).. The piping includes a first conduit (15) having a generally V-shape, i.e. it comprises a substantially descending stretch (15a) from a respective first end towards an intermediate elbow stretch (15c) and a generally ascending stretch (15b) from the elbow stretch (15c) towards a respective second end (16).
Abstract:
It is described a method for controlling filling with water of a water-conducting electric household appliance (1) having a control system (17), such as a dishwashing machine or a laundry washing machine. After the start of a treatment program of the electric household appliance (1): the control system (17) controls opening of a loading valve (12) set on a line (11, 14) for conveying water to a treatment container (3) of the electric household appliance (1); the control system (17) monitors a sensor (13) prearranged for detecting conveyance of water to the treatment container (3); in presence of a signal from the sensor (13), the control system evaluates if such signal is usable for the purposes of water dosage, or compatible with a predetermined value or range of values, and, in the negative case, the control system (17) provides for carrying out corrective actions.