JPS6168093A - Dehydration washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field of invention] TECHNICAL FIELD The present invention relates to a so-called water-saving type washing machine with dehydration and dehydration functions.

(Technical Background of the Invention) Conventional water-saving dehydrating and dehydrating washing machines are, for example,
As shown in Publication No. 13509, the structure is such that washing water is not stored in the outer tank but only in the inner rotating tank.For this reason, the rotating tank is formed in a non-porous shape, but during dehydration A drainage portion is formed at the upper end of the rotary tank to discharge water that rises on the inner circumferential surface of the rotary tank due to rotational centrifugal force into the outer tank.

[Problems with background technology]

When the pulsator rotates during washing, a whirlpool water flow is generated in the rotating tank, and the water surface becomes approximately mortar-shaped.

As a result, water rises along the inner circumferential surface of the rotary tank and overflows into the exterior from the drainage section at the upper end of the rotary tank.As a result, the amount of water in the rotary tank decreases, which adversely affects cleaning. In addition, during spin-drying, the laundry is pressed against the inner circumferential surface of the rotating tub due to rotational centrifugal force and comes into close contact with the inner circumferential surface of the rotating tub. This is hindered by the laundry, and as a result, there is a tendency that the dehydration rate decreases.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a dewatering and dehydrating method BR that can be used in a water-saving type dehydrating and dehydrating washing machine, which does not cause a decrease in washing water, can expect a good cleaning effect, and can improve the dewatering rate. It's there.

[Summary of the invention]

In the present invention, a container-shaped agitator is disposed inside and below the rotating tank, and a dehydration cylinder having a large number of dehydrating holes is placed in the rotating tank above the container-shaped agitator and on the inner periphery of the rotating tank. By arranging the structure so as to form a gap between the surface and the surface that allows water to pass through, the water dehydration tube suppresses the rise in water level along the inner circumferential surface of the rotating tank during washing, and prevents water from flowing out of the rotating tank. In addition to preventing water from flowing out, the dewatering cylinder prevents the laundry from coming into close contact with the rotating tub during spin-drying, thereby improving drainage performance and the dehydration rate. This product aims to further improve the cleaning effect by combining it with the body.

[Embodiments of the invention]

A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in Fig. 1, 1 is an outer box, and inside is an outer tank 2.
is arranged and is elastically supported via a hanging rod mechanism 3 so as to be swingable. Reference numeral 4 designates an inner rotary tank disposed within the outer tank 2, which is made of plastic and has no holes, and its peripheral wall has a tapered shape that increases in diameter toward the top. Reference numeral 5 denotes a shallow container-shaped agitator disposed inside and below the rotary tank 4, which is rotated in forward and reverse directions during washing and rotated integrally with the rotary tank 4 during dewatering. The container-shaped agitator 5 is made of plastic, has a circumferential wall tapered upward in diameter, and has protrusions on the inner bottom and inner peripheral surface to improve agitation performance for water and laundry. A striped portion 5a is formed. Moreover, a dehydration hole 5b is formed in the peripheral wall of the container-shaped stirring body 5. 6
is a plastic dehydration cylinder with many dehydration holes 7,
It is inserted into the rotating tank 4 so as to be located above the container-shaped stirring body 5 and forms a gap 8 through which water can pass between it and the inner peripheral surface of the rotating tank 4, and is fixed with screws 9. Ru.

In this case, the inner diameter of the lower end of the dehydration cylinder 6 is set to be approximately equal to that of the lower end of the container-shaped agitator 5, so that the inner circumferential surface is continuous with the inner circumferential surface of the container-shaped agitator 5 and the road surface. I have to.

Further, the dehydration cylinder 6 is formed into a tapered shape whose diameter becomes smaller toward the top, and a balance ring 10 in which liquid is sealed in the upper end thereof is formed.
are formed by integral molding. Note that a gap 11 through which water can pass is also formed between the balance ring 10 and the inner circumferential surface of the rotating tank 4. Further, the dewatering hole 7 is formed in a groove 6a formed on the inner circumferential surface of the dehydrating cylinder 6 and extending vertically. 1
Reference numeral 2 denotes a horizontal rib as a protrusion that is integrally molded to extend in the circumferential direction of the outer circumferential surface of the dewatering cylinder 6 and protrudes in multiple stages above and below. Ori,
As shown in FIG. 2, notches 13 are intermittently formed at the tip of the tube to allow water to pass therethrough. 14 is a power control mechanism, which transmits the rotational force of the washing machine motor 15 to the container-shaped stirring body 5 at a reduced speed and alternately reversed during washing, and transmits the rotational force of the washing machine motor 15 to the rotating tank 4. A deceleration mechanism, a clutch mechanism, a brake mechanism, etc. are built in to transmit the information to the stirrer 5 and the container-shaped agitator 5 to rotate both of them integrally. Reference numeral 16 denotes a drainage hose for discharging water discharged from the rotary tank 4 into the outer tank 2 to the outside of the machine. 17 is a timer, which automatically controls each process from washing to final dehydration.

In the above configuration, in the washing operation, the rotation Wi4 is restrained by the brake mechanism so as not to rotate, and the container-shaped agitator 5 is rotated in forward and reverse directions. In addition, the peripheral wall of the container-shaped stirring body 5 is made to function as a movable peripheral wall part.

Next, the operation of the above configuration will be explained. At the time of washing, approximately the same amount of water as in a conventional pulsator rotation type washing machine is supplied only into the rotating tub 4, and the laundry is loaded. The washing operation is carried out by rotating only the container-shaped agitator 5 in forward and reverse rotations while the rotating tank 4 is restrained by a brake mechanism so as not to rotate.In this embodiment, the rotation speed of the container-shaped agitator 5 is controlled. The rotation speed is within the range of 120 to 180 revolutions per minute, and the direction of rotation is reversed approximately every 2 to 3 revolutions.

In such a washing operation, since the laundry comes into contact with the peripheral wall of the container-shaped agitator 5 and the dewatering tube 6 of the rotating tank 4, rotational force is generated from the container-shaped agitator 5 in the lower part due to frictional contact therewith. The upper part receives a restraining force due to frictional contact with the dewatering cylinder 6, and by simultaneously receiving these frictional forces in different directions, it gives a twisting or compressing effect to the laundry, and this also reverses the direction of rotation of the container-shaped agitator 6. At the same time, the centrifugal force accompanying the rotation of the container-shaped agitator 5 pushes the laundry toward the peripheral wall of the container-shaped agitator 5, and the laundry is moved up and down by receiving the reaction inward from the upper dewatering cylinder 6. It also produces a reversal effect, giving complex movements. Therefore, while the laundry is subjected to scrubbing action due to the large friction between the cloths due to such complicated movements and the large friction with the peripheral walls of the dewatering cylinder 6 and the container-shaped agitator 5, the laundry is subjected to repeated twisting, compression, etc. The cleaning effect is shown in Figure 3 as an example of the results of a comparative experiment. In this case, B is a conventional pulsator rotation method, and C is a washing tank rotation method devised prior to this invention, that is, a washing tank rotation method that does not provide an agitation body such as a pulsator in the rotating tank, and the rotating tank itself is intermittently operated. The cleaning ratio characteristics when using a rotational cleaning method are shown, and it can be seen that the cleaning effect according to the present invention is excellent.

In this case, if the dehydrating tube 6 is formed into a tapered shape whose diameter decreases upward as in this embodiment, the laundry will be rotated by the inner surface of the dehydrating tube 6 when the laundry is turned upside down. Since the laundry is pushed to the center side of the tub 4, the laundry can be exchanged between the center side and the outer peripheral side, and the entire laundry can be washed uniformly without uneven washing.

Now, in the washing operation as described above, the container-shaped agitator 5
When the rotating tank 4 rotates, an overwater flow is generated in the rotating tank 4, and the water surface becomes approximately mortar-shaped. However, the gap 8 between the inner circumferential surface of the rotating tank 4 and the dehydration cylinder ○ is 3.1 in the dehydration cylinder 6, and the dehydration hole 7 is
Since there is only 1t-C connected by 1t-C, even if an overwater flow is generated, the eddy current is blocked by the skin water 6, 7, and the water in the gap 8 is almost never rotated. Therefore, the approximately mortar-shaped water surface is limited to the water in the dewatering cylinder 6, and even if the water level along the inner peripheral surface of the dehydrating cylinder 6 rises due to the approximately mortar-shaped water surface, the gap 8 Since the inside is separated from the inside of the dehydration cylinder 6 by its peripheral wall, even if the water level along the inner peripheral surface of the dehydration cylinder 6 rises, the water level inside the dehydration cylinder 6 rises with a time delay. As a result, the rise in the water level tends to be suppressed, and the water in the rotary tank 4 is prevented from overflowing into the outer tank 2 from the upper end opening. In this case, if the horizontal ribs 12 are provided protrudingly on the outer peripheral surface of the dewatering cylinder 6, the horizontal ribs 12 will act as resistance to the rising water flow in the gap 8, so that the rise in the water level in the gap 8 can be further suppressed. This can be further suppressed, and overflow of water from the rotating tank 4 can be prevented more reliably.

On the other hand, the dewatering operation is performed by operating a clutch mechanism (not shown) or the like to rotate the rotation 4t34 and the container-shaped stirring body 5 together at high speed in one direction. During this dehydration operation, water shaken off from the laundry is discharged into the rotating tub 4 through the dehydrating holes 5b and 7, and rises in the gap 8 along the tapered inner peripheral surface of the rotating tub 4. At this time, the water passes through the notches 13 of the horizontal ribs 12 and continues to flow upward, and is finally discharged from the upper pane of the rotating tank 4 into the outer tank 2 and drained out of the machine via the drain hose 16. be discharged. In such a dehydration operation, the washing material (W) only adheres tightly to the inner circumferential surface of the dehydration cylinder 6 and does not close the gap 8.
The water passing through is not obstructed by the laundry and is smoothly pumped up and sequentially discharged from the upper end of the rotary tub 4, resulting in a water rate of 11 fJ or 1 tl, which is higher than in the past. In addition, the rotating tank 4 side is subjected to a large rotational centrifugal force applied to the washing (W), but since it has a double wall structure around the rotating (154) and the dewatering cylinder 6, it is stronger in terms of strength, and even more Example J: Unibo 1 water bottle 6 and balance ring 10
If you integrally mold the The strength is further improved by the strong Ili action.

FIG. 4 shows the second embodiment, in which the notches 13 of the horizontal ribs 12 of each stage protruding from the outer circumferential surface of the dewatering cylinder are formed at different positions from the notches 13 of the vertically adjacent horizontal ribs 12. This is what I did. In this way, the water flow passing through one notch 13 and rising upward during washing will be temporarily blocked by the upper horizontal rib 12, so that a
The rise in the water level in the gap 8 can be further suppressed.

FIG. 5 shows a third embodiment, in which a cutout for water passage is not formed in the horizontal rib 12, but instead a vertical groove 18 is formed in the inner periphery of the rotary tank 4, so that water can pass through this vertical groove. 1. B is made to be able to pass through the horizontal rib 12 by passing through the shaft 18.

FIG. 6 shows a fourth embodiment, in which IBJ water holes 19 are formed only in the vicinity of the opening on the top surface of the rotating tank 4,
Water flowing upward along the inner circumferential surface of the rotating Wi4 is discharged into the outer tank 2 from the dewatering hole 19.

〔Effect of the invention〕

As explained above, in the present invention, since the washing water is stored only in the rotating tank, it is possible to save water compared to a system in which washing water is also stored in the outer tank. In addition, since the dewatering cylinder can prevent the water level from rising along the inner circumferential surface of the rotating tank during washing, water overflows from the dehydrating hole formed at the opening on the top surface of the rotating tank or in the vicinity of the opening, and thus the washing water. In addition to improving the cleaning effect by preventing the decrease in water content, it also prevents the laundry from adhering to the inner surface of the rotating tub during spin-drying, improving drainage performance and increasing the spin-drying rate. can be improved. Moreover, since the stirring body is a container-shaped stirring element, the dehydration cylinder can function as a fixed peripheral wall during washing, and the container-shaped [1! With the body as a movable peripheral wall,
The laundry can be washed mainly by the contact frictional force received from the two washing walls, and it has excellent effects such as a high washing effect.

[Brief explanation of drawings]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a vertical sectional side view, FIG. 2 is a cross sectional view taken along line [-n in FIG. 1, and FIG. 3 is a cleaning ratio FIG. 4 is a partial perspective view of a dewatering cylinder showing the second embodiment, FIG. 5 is a diagram corresponding to FIG. 2 showing the third embodiment, and FIG. 6 is a rotation diagram showing the fourth embodiment. FIG. 3 is a partial vertical cross-sectional view of the upper part of the tank. In the figure, 4 is a rotating tank, 5 is a container-shaped stirring body, 6 is a dehydration cylinder, and 7
1 is a dehydration hole, 8 is a gap, 10 is a balance ring, 12 is a horizontal rib (protrusion), 13 is a notch, and 19 is a dehydration hole. Applicant Toshiba Corporation No. 1 Part 2 Figure 3 Zukomantsuba weight (9) →

Claims (1)

[Claims] 1. A rotary tank formed in a tapered shape with a diameter increasing upward and having no holes or with dehydration holes only in the vicinity of the opening on the top surface, and A gap through which water can pass is formed between a container-shaped stirring body rotatably disposed within the rotating tank and an inner circumferential surface of the rotating tank located above the container-shaped stirring body in the rotating tank. A dehydrating and washing machine comprising a dehydrating cylinder and a dehydrating cylinder having a large number of dehydrating holes. 2. The dehydrating and washing machine according to claim 1, wherein a protrusion that contacts the inner peripheral surface of the rotary tub is provided on the outer peripheral surface of the dehydrating barrel to allow water to pass therethrough. 3. The dehydrating and washing machine according to claim 2, wherein the protrusion is constituted by a horizontal rib extending in the circumferential direction, and the horizontal rib is formed with a notch for water passage. 4. The horizontal rib is formed in a plurality of upper and lower stages, and the cutout of the horizontal rib of each stage is formed at a different position from the cutout of the upper and lower horizontal ribs, according to claim 3. A dehydrating and washing machine. 5. The dehydrating and washing machine according to any one of claims 1 to 4, wherein the dehydrating cylinder is formed in a tapered shape that becomes smaller in diameter toward the top. 6. Claim 1, characterized in that a balance ring is integrally formed at the upper end of the dehydration cylinder.
The dehydrating and washing machine according to any one of items 5 to 5.