Balance ring system on two planes for a spin rotary machine

Abstract

A textile washing machine has a rotary basket balanced in at least one of its two planes, where optionally a first balance ring is structurally formed at the lower part of the basket or bottom of basket in order to balance the lower plane of the rotary basket and / or optionally, a second balance ring structured at the upper part of the basket. The first balance ring comprises: a channel or track that forms an integral part with the bottom of basket, a viscous drag fluid lodged in the track, a plurality of spheres lodged in the channel or track, immerse in the viscous drag fluid, and a lid that seals hermetically against the track. The lid comprises at least one radial rib in order to provide the bottom of basket with a structural reinforcement so that the bottom of basket does not weaken due to the presence of the track or channel. The second balance ring includes: a base with a first wall and a second wall, a cover that closes the base and with the same walls of the base, a working fluid lodged in the base, at least a curved blade lodged in the base where the blade covers from the first wall of the base and leaves a clearing between the blade and second wall, allowing the working fluid to have a vertical component; and at least a straight blade lodged in the base and alternated with the at least one aforementioned curved blade.

Description

RELATED APPLICATIONS[0001]This application claims priority from Mexican application Serial No. MX / a / 2009 / 002329 filed Feb. 27, 2009, which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to washing machines, and more specifically, to washing machines that balance the load in a rotating centrifuge basket, where the balance system comprises balance rings in two planes.DESCRIPTION OF THE RELATED ART[0003]Any person who uses or has used a washing machine has had the opportunity to experience at times that the machine, when in spinning-dry (centrifuge) or in clothes dehydration process, produces extreme vibration, sometimes even making the machine move from its original place. This is known colloquially as “walking”. This occurs mainly because somehow the clothes and objects to be washed are not uniform, they have different shapes and their materials have different densities, and once the process of washing has finished and ha...

AI Technical Summary

Benefits of technology

[0018]Besides placing the ring at the other extreme of the washing basket, another ring is placed integrally at the exterior face of the disk or bottom of the basket, a balance ring with spheres made preferably of steel, of which weight, size and amount have been carefully selected, helping to simplify their manufacture, reducing the number of parts required and hence making it less costly and more reliable. The spheres run submerged in a fluid that has a specific viscosity; the fluid's specific function is to slither the spheres in transitional state so that they don't slip within the track and they reach the position contrary to the imbalanced load in a quicker manner. This also helps to mitigate the noise generated by the spheres by not allowing them to get to a standstill or “stop dead”; besides which the mentioned fluid absorbs the energy generated by the pile-up collision, plus the same fluid also has a weight that contributes to balance the magnitude of the vector resulting from forces.

[0021]The balance ring containing balls placed at the exterior part of the disk or bottom of the basket has been thought to be completely adaptable to it, to wit that the track through which the spheres will be running is part belonging to the basket itself. This means, depending on the design of the basket, its bottom or disk, which preferably should result from a polymer injection process, contains within its intrinsic structure the mentioned track, being this part removed from the mold with the geometry of the track included, giving the washing basket a simplified yet sturdy bottom or disk. Namely that, the design has been such that the placing of the track at the exterior face of the bottom or disk of the washing baskets has a very good rigidity, giving flexibility in the assembly line, this is, the same basket, bottom or disk of basket can be used in washing machine designs for which due to factors concerning the company's decisions, costs or other marketing issues, they choose not to place a balance ring with spheres at the bottom or disk of the washing basket.

Problems solved by technology

And so, being the washing machines lighter, the vibration caused by imbalance becomes a major issue to deal with when considering the performance of the machine.

To wit that, if the imbalance force is such, the washing machine will tend to “walk” or “dance”, which are undesirable conditions for the machine's adequate performance.

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