Pump-type laundry washing machine

A washing, rinsing, wringing machine for clothes within a main tub which contains another inner tub with holes for the passing of the water flow towards the main tub;

• wherein, the tubs are connected in series with a hydraulic closed pumping circuit which consists of a pump which takes continually the water from the inner of the tubs and the discharge, through a feeding tube, again within them, to produce the energy of the re-circulating water flow which moves to the systems;
• the discharge of the pump is connected, by control valves, either to the washing system or to the wringing by centrifuging to activate to any of the two systems or it is used, optionally, a centrifuge pump for the hydraulic washing circuit and other for the hydraulic centrifuging circuit, each of which works with different rotary sense and they are impelled by a same motor which has rotation change to activate one or another pump;
• firstly the closed pumping circuit feeds and activates the washing system which consists of a special eductor without diffuser whose suction is connected to a steam generator to low pressure;
• this generator is a closed steam chamber in which a heater heats the water, direct or indirectly, so that the eductor discharges, in certain adequate direction within the washing tub, a water jet with steam bubbles which cavitate in the bosom of the clothes for wash;
• within the washing tubs is a dragging zone of the clothes, or deflector space of the flow, limited by two surfaces separated to certain distance, on in front of the another one, warped against and converging in certain degree, in such a way that the water and steam jet which gets out by the discharge of the eductor directed towards such zone, in direction of the convergence, produces a positive thrust over the clothes in this zone, so that the same go circulating for such space;
• furthermore, the machine has a rotary washing, moving and circulation system of the clothes within the tubs which is activated by the water flow of the closed pumping circuit and it is comprised of a broad tube or hollow post of great diameter housed centrally within the tubs and called central hollow post;
• this post has a helical wide plates welded in its around and along;
• the rotation of the wide hollow post, which can be continue or slowly controlled by means of a special mechanism, is produced, through a direct coupling or planetary speed reducer, by a motor shaft centered with the post and impelled by an axial flow turbine or by a rotary tube, also as center motor shaft, which conduces the water flow of the system to be connected, by means of a rotary or swivel coupling between both tubes, to the end of the feeding fixed tube at turn that can rotate on this impel by reaction jet;
• the feeding fixed tube is introduced centrally by the upper or lower of the tubs;
• for produce the impulse of the rotary tube is used a system of make in this two folding to 90° in its free end which place to the output of the tube in perpendicular position and to certain distance of the geometrical axis or of rotation of the own tube, in such a way that the water jet which gets out from the tube origins, by reaction, the pair of forces which produce the rotation, at the same time that the jet is projected in the direction of the dragging zone;
• this dragging zone is formed with the lower end of the helical plate as upper surface and, as low surface, the same surface of the tub bottom, or the surface of a horizontal plate welded to a rounded cover, within which is the folded portion of the rotary tube whose final end protrudes of the cover by a radial plane which interrupts the form of this, being this cover separated or integrated to the central post, in front of the dragging zone a deflector plate stays placed, which deviates the water flow a little upwards and to the periphery of the tub;
• as option to move the clothes, are used two planetary central reducers, aligned and with different rotary sense, coupled to the hollow central post which has radial blades at its lower end, in such a way that a tube or centered shaft, which rotates in a single sense, impels alternately by certain ratchet system to the central gear of each reducer to produce in the post and the blades a oscillating movement;
• the eductor is connected to a series with the feeding tube or with the rotary, before or after of the rotary coupling between them, and it forms part of the water conduction;
• the steam chamber and the eductor can be fixed or rotate together with the rotary system;
• if the steam chamber is fixed and the eductor rotates with the rotary system, the steam conduction between the steam chamber and the suction of the eductor is made by means of a first stretch of the fixed tube which comes from the steam chamber and connected to a second stretch which rotates feeding to the suction of the eductor, therefore it is used a rotary or mechanic seal intercalated between both tubes;
• if the steam chamber rotates together with the rotary washing system, the heat of the water within it is made indirectly by a electric transformer whose primary is fixed and the secondary rotates with the system, fed to the same time to a electric resistant within the chamber;
• or also it is effectuated using a heater close to the walls of the chamber or the system of a pair of metallic isolated rings which feed electrically by brushes, are mounted on a shaft which rotates together with the steam chamber and they are connected to the resistance by sealed wires;
• additionally the tubs have in their inner side wide helical plates to guide the circulation of the clothes, and is disposed a system in the entrance of the pump which disintegrates and grind the loose threads coming out of the clothes;
• the clothes wringing system by centrifuging in the inner tub consists on produce the rotation of this by means of an horizontal turbine special Pelton-Type, joined to the center below of the tub bottom, which impelled by the water jets which provide a peripheral nozzles series connected to the discharge of the pump from the corresponding hydraulic circuit, so that the turbine housed within a cylindrical box or casing, called centrifuging chamber and is as prolongation of the main tub bottom;
• this Pelton turbine consists of a vertical box in which is introduced to the middle and they are fixed to its side, a distributed series of ladle-shape radial buckets;
• these buckets direct their output inner edges, slopping a little downward, in almost radial form towards the center of the box, wherein this is connected with a vertical discharge tube from which is evacuated the jets water which impel to the turbine;
• so that the rotation of the inner tub be balanced, this makes rotating while it floats in the contended water, to certain prefixed level, within the main tub, in such a way that the inner tub rotates freely respect to any virtual axis which passes by the center of gravity of the tub and the clothes;
• furthermore, below the tub is placed a centered counterweight to stabilize the flotation of the inner tube;
• the machine has a system to condition the flotation of the inner tub within the main tub, which consists, after previously draining the water of the main tub, in evacuate by gravity the water of the inner tub through the check valves, then to fill again of water the space between the tubs to the prefixed flotation level;
• another system to provoke that the inner tub rotates over any virtual axis which passes by its center of gravity are used the special supports which support to the tub allowing it to displace, freely, in any lateral direction or around of the virtual axis, to the turn that the same rotates over its geometrical axis, in such a way that the result of both movements is the rotation of the tub over the virtual axis, without supporting over a rigid or fixed axis or shaft;
• the pipes have intercalated stretch of flexible hoses to not limiting that the set of tubs and the connectors to these from the same pipes can move laterally;
• to close the virtual axis to the geometrical axis of the inner tub, this has a peripheral closed chamber which store certain quantity of a heavy flow;
• in this case the balancing chamber is annular and forms all the side of the inner tub, in such form constructed which avoid the redistribution of the balancing flow within this to close, when increase the balancing, the virtual axis of rotation to the geometrical axis of the same tub;
• the inner tub is just of the necessary height to contain to the wet clothes, situated in its bottom before the centrifuging, and its side is housed within a broadening which the main tub has for such purpose, remaining certain space to contain the water in which the inner tub floats and rotates;
• the separation between the upper edge of the inner tub and the broadening step from the main one, is covered by means of a annular gate with “L”-shape section, whose vertical portion is slightly adjusted to the diameter of the main tub and the horizontal portion is supported in such upper edge by material plates resistant to the friction;
• if the inner tub floats, this is damped in its oscillation to rotate by anti-friction plates or bearings placed between the bottoms of the two tubs and between the lateral portion from both;
• if is used a rotary tube and the inner tub does not have output holes by flotation reasons, it is placed within the inner tub a third tub with multiple perforations, separated a little from that, in such a way that the water flow is drained by a vertical draining tube centered in the inner tub bottom and which is prolonged until near the bottom of the centrifuging chamber, wherein is the mouth of the suction tube of the pump, the draining tube has a check valve which avoid the return of the water to the inner of the tub.