FR2632664A1 - RINSING SYSTEM FOR AUTOMATIC LAUNDRY WASHING MACHINES - Google Patents

Abstract

The invention relates to a rinsing system for automatic washing machines, in which during the rotation of the drum 2 with the laundry 3 applied against its lateral surface, a curtain of water 4 is injected onto the laundry from a pipe 5 placed laterally near the loading door 8, this pipe being connected to a solenoid valve 6 which is in turn controlled by the device program, the injection pipe 5 of the water curtain being able to be located in the axis 7 of the drum 2, or in the loading door 8 itself, which makes it possible to carry out a very effective continuous rinsing, even in the presence of a high concentration of detergent.

Description

- 1- The present invention relates to a rinsing system for machines

  wash automatic laundry, which saves the water required for rinsing, as well as reducing the time required for this operation. Traditionally, the rinsing of the laundry in automatic washing machines is done by immersion, a process in which the laundry being drowned in water, the detergent dissolves in the water, which is expelled after a certain time. This operation is carried out several times until the laundry is rinsed. Carrying out the immersion rinse as described has the drawback of being very ineffective when the concentration of detergent is high. The rinses following the first are progressively more effective as the

  detergent concentration decreases.

  Since successive rinses have to be carried out for the operation to be effective, the water consumption is considerable, which represents a higher economic cost for the user and a

  greater impact on the environment.

  The use of the rinsing system for automatic washing machines according to the invention makes it possible to obtain an effective rinsing while reducing the water consumption and the time necessary to carry out the operation. To this end, the drum rotates with the linen inside, and under the effect of centrifugal force, the linen accumulates on the lateral surface of the drum, the rinsing being obtained by means of injection from on one side of the drum, a curtain of water which occupies the entire width of the drum, and which is intended to entrain the detergent through the layer

  of laundry under the effect of centrifugal force.

  _ 2._ When the detergent concentration is high, this rinsing system is very effective, the operation being terminated by iDmmersion when the detergent concentration has decreased sufficiently, which thus allows to obtain perfectly rinsed laundry, while reducing water consumption and the cost of operation. The line used to project the curtain of water against the laundry is connected to a solenoid valve controlled by the appliance program, this line being located near the loading door. Also, water can be sprayed against the laundry from a pipe located in the loading door, or from

of the drum axis.

  To complete the description which follows and

  in order to facilitate the understanding of the characteristics of the invention, there is attached to this descriptive memory a drawing, the single figure of which represents a schematic view of a washing machine in which the latter is placed in the drum and the water spraying line is located near the loading door, the position variants of the water injection pipe in the loading door and in the axis of the drum being

shown in dotted lines.

  In the figure in question and in accordance with the reference numbers used, it can be seen that the linen 3 which is to be washed is placed inside the drum 2 of the automatic washing machine, this drum

  2 being located inside the carcass 1.

  When the drum 2 rotates, the laundry 3 accumulates under the effect of centrifugal force on the entire lateral surface of the drum 2, and consequently the curtain of water coming from the pipe 5, close to the door. load 8, is thrown against the linen, entraining the dissolved detergent. Line 5 is connected to the solenoid valve which is

  controlled, in turn, by the device program.

  In this way, when there is a high concentration of detergent, the latter is easily entrained by the water curtain 4, which reduces

the amount of water required.

  When the detergent concentration is low, the operation is ended by rinsing with

immersion.

  The water curtain 4 can be projected from one side, close to the loading door, as

  it has been described, or from the axis 7 of the drum 2.

  Also, the projection of water can be carried out from the loading door by causing the

  water line which is connected to the solenoid valve 6.

  Consequently, thanks to the water curtain 4, a continuous rinsing is obtained and not a rinsing by successive stages as when it is carried out by immersion, this continuous rinsing having a high yield when the concentration of detergent is high and allowing reduce the amount of water and the time required, which saves money and reduces

ecological impact.

  In the case where the loading of the automatic washing machine is done from the top, the water is injected through

the axis of the drum.

_ 4 _

Claims (1)

CLAIM   1.- RIN AGE SYSTEM FOR WASHING MACHINES   AUTOMATIC LAUNDRY, intended to be used instead of immersion rinsing which is carried out in successive stages, essentially characterized in that the continuous rinsing is carried out by projecting a curtain of water against the laundry applied to the lateral surface of the drum during rotation from the latter, the water entraining the detergent which has a high concentration, it being provided that the projection of the water takes place from a pipe placed laterally near the loading door, and which is connected to a solenoid valve controlled, in turn, by the machine program, with the particularity that the water spraying line can be placed in the axis of the drum or in the loading door herself.