摘要:
Plastic laundry tub for a washing machine, the tub contg. a rotatable drum the drive of which is supported by at least two axially spaced bearings in a sleeve passing through an end wall of the tub such that the sleeve (14) is obtained separately from the tub (5) by (a) using a first mould (6) for making a spacer element (19) dimensioned to maintain the bearings (12, 13) at a suitable distance apart; and (b) the spacer element (19) is placed in a second mould (20) together with the bearings (12, 13) and the plastics injection moulded about the spacer element and the bearings (12, 13) for finishing the sleeve (14); and (c) sleeve (14) is placed in a third mould (26) in which the tub (5) is obtd. by injection moulding about the sleeve (14) using another plastics material having a lesser resistance to mechanical stresses than that used for the sleeve (14).
摘要:
A control device for driving the drum of a washing or drying machine for laundry is designed to vary the rate for rotating the motor (2) of the machine in case the electric windings (4, 9) are excessively heated. The device comprises an electronic comparator (57) adapted to compare the voltages generated by a temperature sensor (3) disposed near the windings (4, 9) for detecting their heating temperature, with a predetermined reference voltage in such a way that, in accordance with this comparison, it controls the drive of the motor (2) at different rates via logic AND circuits (63, 64) connected with respective logic commutators (65, 66) or via a logic AND circuit (73) adapted to drive the motor (2) at a slower rate so as to allow it to cool gradually if its windings are overheated. In this way, given that the motor (2) is not switched off since the thermal link (7) connected with the windings (4) thereof does not intervene, one obtains efficient washing and drying programs without any necessity of oversizing the motor.
摘要:
A fluff filter monitoring device for a laundry drier, operable to indicate the presence or absence of the filter (16) in its seat, and the operative state of the filter with regard to its being clogged with fluff. The device comprises a flexible plastic strip member (27) fixedly mounted in a housing space for the filter (16) and provided with a planar gate portion (26) adapted to intercept the movement of a lug (23) projecting from a door (11) provided for closing an opening giving access to the rotating drum (10) of the machine. When the filter (16) is removed from its housing space (17), the flexible strip member (27) is displaced to a position in which its planar gate portion (26) intercepts the movement of the lug (23) so as to prevent the door (11) from being closed, while when the filter is in place in its housing space, the planar gate portion (26) does not interfere with the lug (23) so as to permit the door (11) to be closed and the machine to be put into operation.