KR890004927B1 - Washing machine - Google Patents

Abstract

Clothes are washed in a washing tank (4) with a movable side wall (6) rotatable in 2-directions. This wall shaped like a circular cage with bottom is located below a fixed side wall (5) of the tank to wash clothes by the effects of the friction at the fixed wall and rotation of the movable wall relative to the fixed wall. Projections (9,20,21,22) for friction of the clothes are formed on the inner side surface of the movable wall and other taller surface of the movable wall. The movable side wall operates alone for a small wash load, while with a large load the load provides frictional force between the two wall.

Description

washer

Figure 1 is a longitudinal cross-sectional side view of the whole showing an embodiment of the present invention.

2 is a plan view of the container-shaped stirring body alone of the embodiment.

3 is a cleaning ratio characteristic diagram.

4 is a longitudinal sectional side view of the container-shaped stirring body alone showing a different example of the second projections.

5 is the second diagram of the same example.

6 to 8 are diagrams corresponding to Fig. 4 showing different examples of the first projections.

9 is a view corresponding to FIG. 2 showing still another example of the second projection.

* Explanation of symbols for main parts of the drawings

4: washing tank 5: fixing tank

6: container-shaped stirring body (movable circumferential wall part) 9,20,21,22: 1st protrusion

10,19,24: second projection 14: power control mechanism

15: motor

The present invention relates to a washing machine in which the circumferential wall of the washing tank is composed of a fixed circumferential wall portion and a movable circumferential wall portion, thereby obtaining an effective cleaning action.

In the conventional washing machine, the rotary blade method of generating a water flow by the rotary blades to obtain a washing action requires the volume of a large washing tank for the amount of cloth (quantity) since the nature of flowing the laundry by the water flow. This means that the amount that can be washed at one time is small. When the amount is small, the water flow becomes very strong and over-cleaning. On the other hand, when the amount is increased, the water flow rate decreases and the cleaning effect tends to decrease rapidly. In addition, the contact between the laundry and the rotor blade is accidental and only partially occurs, so the washing effect of the washing cannot be expected, and the damage of the laundry is also fast.

On the other hand, as a new method of removing the rotor blade in recent years, it has been proposed to obtain a washing action by the speed difference between the water and the laundry by rotating the entire washing tank intermittently with water and laundry, but this does not damage the laundry. Although it does not have the advantage, the speed difference between the laundry and the water is small, and the simple movement makes it difficult to clean.

The present invention has been made in view of the above-described circumstances, and its object is to wash the laundry at the same time as it can be expected to have a stronger cleaning effect and to prevent damage to the laundry than conventional rotating blades or rotation of the entire washing tank. It is to provide a washing machine having a large amount of water and moreover a large capacity range capable of maintaining an appropriate cleaning effect.

According to the present invention, the main wall of the washing tank is formed of a fixed circumferential wall portion located above and a movable circumferential wall located below, and the laundry is accommodated together with water in such a washing tank, and the laundry is mainly contained in the movable circumferential wall portion when the quantity is small. It is made to flow by the water flow which arises, and to make it flow by the contact friction force of a movable circumferential wall part as a quantity of abundance increases, and to wash by synergy with the frictional force received by the said fixed circumferential wall part at the upper side, The said movable On the inner circumferential surface of the circumferential wall portion, a first projection for laundry friction is provided, while a second projection for generating water flow is provided on the inner bottom thereof than the first projection, so that the fixed circumferential wall portion and the movable circumferential wall portion of the laundry are provided. In particular, the strong scrubbing effect caused by the friction between the protrusions and the friction between the laundry and the laundry are It is expected to effect due to grated take another direction of a force in the portion, and is characterized in that one allows the laundry is also expected effect of washing a strong water flow than the case of small quantities.

Hereinafter, an embodiment in which the present invention is applied to a combined washing machine for dehydration will be described with reference to FIGS. 1 to 3.

(1) is an outer box, and the inside of the drip tray 2 is arrange | positioned inside, and is elastically supported so that it can be rocked by the outer stick mechanism 3. Reference numeral 4 denotes a washing tank, which essentially constitutes the circumferential wall by the fixed circumferential wall portion and the movable circumferential wall portion located below the fixed circumferential wall portion. It is made by the combination of the fixing tank 5 to restrain and the stirring body 6 of a shallow bottom container shape. Next, this will be described in detail, wherein the fixing tank 5 is arranged in the drip tray 2 to connect the outer bottom to the hollow dewatering shaft 7, while the container-shaped stirring body 6 is the inner circumference of the fixing tank 5. The bottom is connected to the washing shaft 8 by being disposed in the lower portion thereof along the wall surface. At this time, in particular, the container-shaped stirring body (6) is formed so that its diameter increases gradually as the inner wall of both sides from the lower side to the upper side with the height of the circumferential wall height of about half of the fixing tank (5), and the inner side On the circumferential surface, the first projections 9 are formed in the shape of protrusions extending straight in the vertical direction, respectively, almost throughout, and on the inner bottom, the second projections 10 are larger than the first projections 9. It is also formed in the shape of a stone that extends radially from the center to the height at all sides. In addition, a plurality of dewatering holes 6a are drilled and installed in the main side portion of the container-shaped stirring body 6 almost all over. On the other hand, the fixing tank (5) is formed by separating the tubular portion (5a) and the ordinary portion (5b) by screws 11 or the like, and in the case of the present embodiment, the washing tank (4) also serves as a dehydration tank. In this connection, the balancer 12 is attached to the upper end portion of the ordinary portion 5b of the fixing tub 5, and the dehydration hole 13 is formed in the circumferential wall. Numeral 14 denotes a power control mechanism, which transmits the rotational force of the motor 15 to the washing shaft 8 when washing and to reverse it alternately, and when dewatering, the dehydrating shaft 7 and the washing shaft 8. In order to rotate the fixing tank 5 integrally with the container-shaped stirring body 6, the reduction mechanism, the clutch mechanism, and the brake mechanism are incorporated. Numeral 16 is a drain valve, and the water in the washing tank 4 can be discharged out of the washing machine through the drain hose 17 at the bottom of the sump container 2. Reference numeral 18 denotes a timer, which automatically controls each stroke from washing to final dewatering.

In the above-described configuration, in the washing operation, the fixing tank 5 is restrained by the brake mechanism and the container-shaped stirring body 6 is rotated forward and backward to be exposed upward from the circumferential wall of the container-shaped stirring body 6. The circumferential wall portion of the upper portion (normal portion 5b) of the fixed tank 5 is operated as the fixed circumferential wall portion in the circumferential wall of the washing tank 4, and the circumferential wall of the container-shaped stirring body 6 is operated as the fixed circumferential wall portion. .

Next, the operation of the above configuration will be described. At the time of washing | cleaning, the water of the same grade as the conventional rotary wing type washing machine is supplied into the washing tank 4 according to the drip tank 2, and laundry is also thrown in. The washing operation is carried out by forward and reverse rotation driving of the container-shaped stirring body 6 only in a state of being restrained by the brake mechanism so as not to rotate the fixing tank 5. In this embodiment, the rotation speed of the container-shaped stirring body 6 is in the range of 120-180 revolutions per minute, and the rotation direction is reversed every about 2-3 revolutions.

In this washing operation, however, the laundry comes into contact with the circumferential wall of the container-shaped stirring body 6 and the circumferential wall of the fixing tank 5, so that the lower part is provided with a rotational force by contact with this in the stirring body 6. On the upper side, it is subject to restraining force by frictional contact with the fixing tank 5 and simultaneously subjects the other direction frictional force to twist or compress the laundry, which also causes the container-shaped stirring body 6 to reverse the rotation direction. By repeated centrifugal force accompanying the rotation of the container-shaped stirring body 6 and being pushed toward the circumferential wall direction of the container-shaped stirring body 6 to receive its reaction inward from the circumferential wall of the upper fixing tank 5. The action of inverting up and down also occurs, which gives a complex movement. Thus, the laundry is subjected to the large friction between the cloth and the fixing tank 5 and the vessel shape stirring by the above complex movement. While the sieve 6 is rubbed by a large friction with the circumferential wall and sucked, it is also washed by receiving a kind of rubbing action by twisting or pressing repeatedly. Particularly in this embodiment, the inner circle of the container-shaped stirring body 6 is washed. Since the first projection 9 is provided on the main surface, the laundry gives a stronger grabbing action and a more powerful rotational force, thereby increasing the grabbing action received from the fixing tank 5, which is very good. The cleaning effect can be obtained.

In addition, the excellent cleaning effect according to the present invention is shown in Fig. 3 as an example of a comparative test result. That is, in Fig. 3, each curve (A) is according to the present invention. In the case of the method, (C) shows the cleaning ratio characteristic in the case of the washing tank rotating method considered before this invention, and it turns out that the cleaning effect by this invention is high.

In addition, as described above, the laundry is moved by the frictional contact with the circumferential wall of the fixed tank 5 and the container-shaped stirring body 6, so that the frictional force increases as the quantity of water decreases, so that the degree of movement of the laundry decreases due to the increase of the quantity. Is small, and thus the reduction rate of the cleaning effect is small. In addition, when the amount of laundry is small, the entire container in the washing tank 4 is rotated by the low-speed rotation of the container-shaped stirring body 6, which has a low surface contact frequency and very low contact friction force, and mainly has a large surface area. Since it is flowed and washed by the water flow generated in the water flow, the water flow is not as strong as in the case of the conventional rotary wing method, so that it is not overwashed, and the cleaning effect is not deteriorated. In particular, in the present embodiment, since the second projection 10 higher than the first projection 9 described above is provided on the inner bottom of the container-shaped stirring body 6, this generates a relatively strong and effective laundry flow. It is possible to make the washing as appropriate, and to achieve the required washing effect as needed, so that the washing can be performed with an appropriate degree of cleaning despite a slight amount of foam. This means that the range of doses capable of maintaining an appropriate cleaning effect is wider than that of the above-described prior art (see FIG. 3).

The dewatering operation of the present embodiment is performed by rotating the fixing tank 5 and the container-shaped stirring body 6 at a high speed in one direction by operating a clutch mechanism or the like not shown after draining by opening the drain valve 16. .

The second projections 10 provided on the inner bottom of the vessel-shaped stirring body 6 may be replaced with the projections 19 in the shape of bumps rather than the protrusions as shown in FIGS. 4 and 5. The same effect can be obtained. In addition, in the above embodiment in which the first projection 9 is formed in the shape of a protrusion extending in the vertical direction, the effect of facilitating the rising of the laundry and the water to facilitate the replacement of the upper and lower parts is obtained. As shown in Fig. 1, when the lower portion is wide and the upper portion is narrowed to the projection 20, the solid arrow in the drawing is shown for the rotation in the forward and reverse directions of the container-shaped stirring body 6 by the inclined surfaces on both sides thereof. And as shown by the dashed arrow, it is possible to impart a more powerful upward force, and therefore, it is possible to further promote the replacement of the laundry and water, respectively. In this case, as shown in FIG. 7, when the projection 21 is inclined in one rotational direction (the direction of left rotation in the drawing) of the container-shaped stirring body 6 as a whole, it is indicated by a broken arrow in the one rotational direction. Likewise, the laundry and water can be lowered to give a unique change in the movement between the laundry and the water, as shown by the solid arrow in the reverse direction, and as shown in FIG. 8, one side is vertical and the other side is If it is changed to the protrusion 22 which inclines only, it can also change also in raising it in the same way, such as giving a normal lifting force in one rotation direction and giving a strong lifting force in a reverse rotation direction. 9 is also replaced with the above-described second projection 10 or 19, and each tip portion has a different length from the center of the inner bottom surface of the vessel-shaped stirring body 6, whichever is the center of the vessel-shaped stirring body 6. The second projection 24 located at the outer circumference of the circle 23 having a center at a convenient position is provided, and as a result, a more complicated laundry flow can be generated as described above, and a small amount of the laundry is replaced up and down. Can be promoted.

In addition, the present invention is not limited to the above embodiment only, for example, may be applied to a washing machine that does not have a dewatering function, so that the main wall of the fixing tank into a non-porous shape so that water is stored in itself, and the water container is removed. The present invention may be modified as appropriate without departing from the scope of the present invention.

As apparent from the above, the washing machine of the present invention comprises a fixed circumferential wall portion positioned above the main wall of the washing tank, and a movable circumferential wall portion positioned downward and driven forward and backward, and accommodates the laundry in this washing tank together with water. When the amount is small, the flow is mainly caused by the flow of water generated by the movable circumferential wall portion, and as the amount is increased, it is caused to flow by the contact friction force with the movable circumferential wall portion. Washing by the synergistic action of the first wall is provided with a first projection for laundry friction on the inner circumferential surface of the movable circumferential wall portion, and a second projection for generating a water flow higher than the first projection on the inner bottom surface. It is characterized in that it is installed, and according to the present invention conventionally, even if not by the rotation of the rotary blades or the entire washing tank It can be expected to have strong washing effect and at the same time, it can increase the amount that can be washed once, and also it can widen the capacity range to maintain the proper cleaning effect from large amount of laundry to small amount of laundry. It is reaping.

Claims (1)

In washing laundry, water, detergent and the like in a washing tank, the circumferential wall of the washing tank 4 is fixed to the fixed circumferential wall portion 5b located above and the movable circumferential wall 6 driven forward and reverse rotation. In addition, the first projections 9, 20, 21, 22 for washing the friction are provided on the inner circumferential surface of the movable circumferential wall 6, and the water flow higher than the first projection on the inner bottom. When the second projections 10, 19, 24 for production are provided, and when the amount of water is small, the laundry is mainly flowed by the water flow generated by the movable circumferential wall portion, and as the amount of the bulk increases, the contact friction with the movable circumferential wall portion is applied. Washing machine, characterized in that the washing by the friction and the synergistic action received at the fixed circumferential wall portion while flowing the laundry.

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