JPH0527193Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to a centrifugal dehydrator that can wash a small amount of laundry while it is housed in a dehydrating basket.

BACKGROUND ART In recent years, there has been a demand for washing even in centrifugal dehydrators exclusively used for dewatering. For example, in a two-tub washing machine that has a dehydration tub with the function of a centrifugal dehydration washing machine and a washing tub dedicated to washing, regular clothes are washed in the washing tub, and small items and delicate clothes are washed in the dehydration tub. As such, there is a growing demand for washing items according to the type of laundry. Therefore, the present inventors have proposed a washing machine as shown in FIG. Specifically, reference numeral 1 denotes an outer box of a two-tub washing machine, in which a washing tub 2 and a dewatering tank 3 are arranged side by side, and a washing motor 4 is connected to the inner bottom of the washing tub 2 via a power transmission mechanism 5 A stirring blade 6 that is driven by A dehydration basket 9 driven by a dehydration motor 8 via a dehydration shaft 7 etc. is disposed in the dehydration receiving tank 3, and a large number of small holes 10 for dehydration are provided in the upper part of the peripheral wall of the dehydration basket 9. A plurality of stirring protrusions 11 having upper ends below the small holes 10 are fixed to the inner circumferential wall of the dehydration basket 9. A drain port 12 is provided at the bottom of the dewatering tank 3 and is connected to an external hose 13. Inner lid 15 and outer lid 16 that open and close the laundry entrance/exit 14 to the dehydration basket 9
A water injector 17 for injecting water into the dehydration basket 9 is disposed on the side wall of the inner lid 15. An operation box 18 is erected at the rear of the upper part of the outer box 1, and a water supply switching cock 21 and the like operated by a control device 19 and a lever 20 are disposed. Water supply switching trick 2
1 is a washing tub 2 or a water injector 1 through which water from a water supply port 22 is passed through a washing side waterway 23 or a dewatering side waterway 24.
7 can be selectively supplied.

When washing is done in the dehydration tank 3 side, the laundry and detergent are put into the dehydration basket 9, and the water injector 1
Water is poured from step 7 to bring the inside of the dewatering basket 9 to a predetermined water level. Then, the dewatering basket 9 is rotated in reverse by rotating the dewatering motor 8 at a low speed and reversing left and right. At this time of reversal, the vortex and the stirring protrusion 1
A cleaning effect is obtained by the action of 1. Next, when draining or dehydrating, the dehydrating motor 8 is rotated at high speed, and the water in the dehydrating basket 9 is discharged from the dehydrating small hole 10 by centrifugal force. In addition to washing clothes on the dehydration receiving tank 3 side, washing can also be done on the washing tub 2 side at the same time.

Problems to be Solved by the Invention In order to carry out washing in the above-mentioned spin-drying basket 9, the spin-drying basket 9 has a water storage function, and when the spin-drying basket 9 is rotated left and right at a low speed with respect to a predetermined water level. By arranging the dewatering small hole 10 above the top end, where the water surface forms a paraboloid, water loss in the washing liquid during washing operation is prevented. When draining or dehydrating, the dehydrating basket 9 is rotated at high speed, and the water in the dehydrating basket 9 is discharged from the dehydrating small holes 10 by centrifugal force. However, when the dewatering basket 9 is started in order to drain water that has been stored up to a predetermined water level or near the small dewatering hole 10, water oscillates due to eccentricity or weight imbalance of the dehydrating basket during low speed rotation. The problem is that the dewatering basket 9 swings around and repeatedly collides with the dehydration receiving tank 3, resulting in poor startup. This phenomenon occurs not only when there is only water in the spin-drying basket 9, but also when the amount of clothes washed in the spin-drying basket 9 is very small, and when the spin-drying basket 9 is washed at a rotation speed that causes the above-mentioned whirling. This also occurs when an object has a movable amount.

Therefore, in order to solve the above problem, an annular case is provided at the upper end of the dehydration basket 9, and approximately half of the total volume is poured into the annular case so that the liquid can flow freely, and the remainder is left in the empty space. However, when the liquid balancer itself rotates at low speed, the liquid tends to flow in the same direction as the vibration direction, promoting an unbalanced load and increasing vibration. Various partition plates have been installed inside the case to prevent the flow of liquid during low-speed rotation, but if the dehydration basket 9 has a water storage function as described above, the effect of the liquid balancer will be greater than the amount of water inside the dehydration basket 9. The unbalanced load caused by the water is larger, and its effect cannot be expected.

In view of the above-mentioned problems, an object of the present invention is to solve the startup failure caused by the whirling of the dewatering basket during low-speed rotation when the dehydrating basket starts dewatering.

Means for Solving the Problems In order to achieve the above object, the present invention provides a water storage function by forming small holes for dewatering in the upper part of the peripheral wall of the dewatering basket, and the small holes for dewatering are formed by high-speed rotation. In a centrifugal dehydrator that performs dehydration through the dewatering basket and washes laundry through a low-speed reversing operation, the inner peripheral wall of the dehydrating basket has a circumferential hole located below the dewatering hole and midway in the height direction. A plurality of stirring protrusions are arranged in the dewatering basket, and a large number of draining bodies are arranged below the stirring protrusions and are arranged at equal intervals around the circumference, and the lower part extends from the inner circumferential wall of the dehydration basket to the inner bottom. The height of the draining body is lower than that of the stirring protrusion.

Effect With the above configuration, the flow rate of the liquid in the dehydration basket is slower than the rotation speed of the dehydration basket during dehydration rotation, so even if an unbalanced load due to the liquid in the dehydration basket occurs, that is, the liquid is in the same direction as the vibration direction. Even if the dewatering basket tries to flow in the same direction, it is possible to suppress an unbalanced load due to agitation by the many draining plates extending from the inner circumferential wall of the dewatering basket to the inner bottom. In addition, since the draining plates are arranged at equal intervals on the circumference, their action is continuous and uniform, and it is possible to eliminate startup failures caused by the whirling of the dewatering basket at the time of starting dewatering.

Embodiment The present invention relates to the internal configuration of the dehydrating basket, and the overall configuration and operation of the washing machine are the same as the washing machine shown in FIG. The explanation will focus on the internal structure and operation.

The structure of the dehydration basket in one embodiment of the present invention is as shown in FIGS. 1 and 2.
A large number of draining plates 25 protruding inward from the lower inner circumferential wall to the inner bottom are arranged at equal intervals around the circumference. Since a plurality of agitation protrusions 11 are also arranged, when they are located on the same vertical line, the upper end of the draining plate 25 and the lower end of the agitation protrusions are formed by a continuous slope, but the colander The upper end of the plate 25 may be set near the paraboloid of the water surface when the stored water flows in the same direction as the vibration direction during low-speed rotation during dehydration startup. Since the liquid level height is determined by the amount of water at the rotational speed when whirling occurs due to an unbalanced load, the upper end of the draining plate 25 does not necessarily form a continuous surface with the lower end of the stirring protrusion 11. do not have to. Furthermore, the inward protrusion dimension a of the draining plate 25 is determined by the fact that the purpose of the draining plate 25 is to disperse water that tends to flow in the vibration direction due to the rotational force of the dewatering basket. If the size is increased, centrifugal force will also act on the clothes in the spin-drying basket 9 during spin-drying rotation, and the clothes will also be pushed near the inner peripheral wall of the spin-drying basket 9. If there are few clothes, the clothes will get caught on a part of the draining plate 25 and will not be filched. It is desirable that the dimension a be 10 mm or less to avoid unbalance.

In the above configuration, when washing is performed using the dewatering basket 9, the dehydrating basket 9 is rotated reversely after water is supplied as in the conventional manner. At this time, the stirring protrusion 11
In addition to this, it is also possible to obtain a cleaning action from the draining plate 25. Next, when draining or dehydrating, the dehydration basket 9 is rotated at high speed and the liquid is scattered through the small dehydration holes 10 by centrifugal force, but during the low speed rotation at the start of dehydration, some of the water is dehydrated and the water is reduced. Even if the liquid flows in the vibration direction due to vibration during dewatering, it will be dispersed by the plurality of draining plates 25, and the unbalanced load due to the flow of liquid will not be promoted, and the swing of the dewatering basket 9 will increase. , the phenomenon of poor startup caused by repeated collisions with the dewatering tank 3 is eliminated.

In addition, in this example, since the small holes for dehydration are located only in the upper part, there is a possibility that the dehydration performance near the bottom of the dehydration basket will be reduced, so as shown in FIG. 26 to the inner circumferential wall of the dehydrating basket 9, a space is created between the inner circumferential wall of the dehydrating basket 9 and the clothes to improve drainage performance at the bottom, and the above-mentioned stirring protrusion 11 is attached to the cylindrical body 26.
The same effect may be obtained by integrally forming the drain plate 25 and the drain plate 25.

Effects of the Invention As is clear from the above embodiments, according to the present invention, drain plates are provided at equal intervals around the circumference from the inner peripheral wall of the dehydration basket below the stirring protrusion to the inner bottom. It is possible to suppress the flow in the same direction as the vibration direction of the liquid stored in the dehydration basket by dispersing it, and prevent the unbalanced load from increasing, eliminating dehydration startup failure and ensuring smooth dehydration operation. It can be done.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a dewatering basket according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a perspective view of a dehydrating basket and a cylindrical body according to another embodiment of the present invention. FIG. 4 is an overall configuration diagram of a washing machine proposed by the present inventor. 9...Dehydration basket, 10...Small hole for dehydration, 11...
... Stirring protrusion, 25... Draining plate.

Claims (1)

[Scope of utility model registration request] A small hole for dewatering is formed in the upper part of the peripheral wall of the dehydrating basket to provide a water storage function, and water is dehydrated through the small hole for dewatering by high-speed rotation, and laundry is washed by a low-speed reversing operation. In the centrifugal dehydrator, the inner peripheral wall of the dehydration basket has a plurality of stirring protrusions arranged in the circumferential direction below the small dehydration holes and midway in the height direction, and a plurality of stirring protrusions arranged below the agitation protrusions in the circumferential direction. The drainers are arranged in large number at equal intervals around the circumference, and the lower part extends inward from the inner circumferential wall of the dewatering basket to the inner bottom. A centrifugal dehydrator with a lower configuration.