ES468033A1 - Improvements in washing machines of clothes, dishwashers and similar. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in laundry washing machines, dishwashers and the like, characterized essentially by the fact that they comprise a programming block for starting the system by means of acting on the forward or program search key, with which the feeding device automatically stops the appliance under tension; by providing a selection block integrated by an electromechanical or self-powered memory system that retains the last selected function, this being the one that will perform, in case the pre-selected selection is not altered; because a functional and operational control block will be positioned simultaneously, at the starting point; because the continued impact on the key or programming block, generates the issuance of orders of the selection block to an electronic module through an analog binary converter that in turn will provide the basic characteristics, in an orderly manner, such as program number, temperature, etc., through a display, repeating this operation in a closed cycle until the operator ceases to affect the programming block; to understand a block of execution, on which must be incidirse so that the apparatus begins in its functions, moment in which the blockade of the instructions of programming and selection will take place; because in the above-mentioned phase and even in the event of a power failure, the operative and control functional block will automatically return to the starting point, thanks to the orders received from the electronic module; because the simple operation mentioned, to be verified by the operator, is sufficient to be able to carry out any of the programs selectable and memorized by the system, since thanks to the blocks of functional selection of operative and control elements and to the electronic module, they will happen all the logical functions, such as time control, cyclic sequence, water levels, mechanical action activity, etc., by providing a temperature reduction block that gives the operator the option of reducing the temperature of the wash bath, as well as a block that allows to alter some basic functions, such as the cancellation of the prewash, reduction of the water level, in an economic cycle, alteration of the spin speeds, etc., because the microprocessor, component of the electronic module, performs also a function of temperature control, by variation, of resistance, thanks to the incorporation of an ntc thermistor, faci liting this transducer the necessary data to the electronic module so that during the heating phases it can be visualized, in the form of a roll, the actual temperature of the bath or enclosure to be controlled, obtaining a maximum contribution of data to the operator; by incorporating an acoustic preselection indicator that acts in each sequential program step, and that is aimed at facilitating the operator the visualization of the digits, whose constructive structure departs slightly from the conventional one; and because the whole is complemented by a low voltage power supply equipped with a rectification system and an anti-interference filter block, to avoid the possible impact on the electronic module that external disturbances may have and the operational group constituted by the components themselves of the device. (Machine-translation by Google Translate, not legally binding)