JPS62109596A - Centrifugal dehydrating 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 Field of the Invention The present invention relates to a centrifugal dehydrating washing machine for washing and dehydrating clothes and the like.

2. Description of the Related Art Conventionally, so-called pulsator-type washing machines have been widely used in this type of centrifugal dehydration washing, but they have the problem of frequently twisting and damaging the laundry. Therefore, a so-called agitation washing machine in which the agitation blade rotates back and forth has been developed, but this agitation type does not twist or damage the laundry, but because the agitation blade makes a sudden and large reciprocating movement, the laundry is agitated. There is a problem in that the wings tend to cause pilling.

Another washing agitation method is Utility Model Publication No. 32-1468
Publication No. 4, Utility Model Publication No. 32-14562, Utility Model Publication No. 32
As seen in Japanese Utility Model Publication No. 4790 and Japanese Utility Model Publication No. 31-18239, a device is disclosed in which an eccentric inclined shaft is rotated and a stirring blade is precessed by this shaft.

This method has the advantage of relatively little twisting or damage to the laundry, but it does have problems such as the washed items getting caught under the stirring blades and clothes getting wrapped around the stirring blades when running for a long time. Ta.

In order to solve such problems,
As seen in Japanese Patent No. 590 and Japanese Patent Application Laid-Open No. 59-189894, a washing method has been proposed in which stirring blades are rotatably attached to an eccentric inclined shaft and the eccentric inclined shaft is rotated.

In this method, the stirring blades are rotatably attached to an eccentric tilted shaft, and the stirring blades revolve as the eccentric tilted shaft rotates, but they do not rotate, so the laundry is not forcibly turned left and right, and the laundry is compressed by the stirring blades. The entire laundry is washed by repeating relaxation and turning the laundry upside down by swinging the stirring blade from side to side.

Therefore, it was possible to reduce twisting, damage, and pilling of the laundry.

Problems to be Solved by the Invention With such a conventional configuration, it is possible to reduce the occurrence of twisting, damage, and pilling of the laundry without forcibly stirring the laundry. movement from side to side is reduced.

If laundry moves from side to side in the tank less, once the laundry is unevenly distributed in the tank, it will take time for it to become uniform.

As a result, the movement of the laundry decreases, resulting in poor cleaning performance, and since the tub spins water in an unbalanced state during spin-drying, spin-drying vibrations and noise increase. There is also a problem that dehydration may become impossible.

In addition, a pump is installed at the bottom of the tank to remove lint (lint) from the washing liquid in the 4th tank, and this pump discharges the washing liquid from the bottom of the tank to the top of the tank.A lint filter is installed at the discharge port, and the lint However, since this discharged water falls concentratedly on one part of the laundry, the part of the laundry that is hit by the discharged water occupies more of the water than other parts. Since the amount of laundry is reduced, there is a problem that the laundry moves easily, creating large gaps in this area and causing uneven distribution.

The purpose of the present invention is to solve these problems by quickly reducing the gap even when a large gap occurs between the laundry in the tub, reducing uneven distribution, improving the movement of the laundry, and improving the cleaning effect. The purpose of this is to ensure smooth startup even when starting the dehydration process and to reduce dehydration vibration and noise.

Means for Solving the Problem In order to solve this problem, the present invention provides a method in which the rotation direction of the washing drive shaft is periodically switched between left and right rotation directions, and the left and right rotation stop positions are different. This is what you set.

Function: With this configuration, the moving distance of the laundry in the left direction and the right direction can be made different, so that gaps in the laundry that tend to occur due to the opening through which discharged water flows are moved from the opening, and the gaps are gradually closed. Make it smaller.

As a result, the laundry is less unevenly distributed, the laundry moves more, and the cleaning effect is improved. At the same time, smooth startup is performed during spin-drying, and vibrations and noise are reduced.

Examples Below, examples of the present invention are shown in Fig. 1, Fig. 2, Fig. 3,
This will be explained with reference to FIG. In the figure, reference numeral 1 denotes a washing/dehydration tank (hereinafter referred to as the tank), the lower part of which is connected to a dehydration hollow shaft 3 via a flange 2. Reference numeral 4 denotes a dewatering tank, which functions as the tank 1 and has a speed reduction device 6 attached to its lower part. Reference numeral 6 denotes a washing drive shaft, and the lower end of an eccentric shaft 8 is connected to the upper end of the washing drive shaft via a connecting fitting 7. A stirring blade 9 is rotatably attached to this eccentric shaft 8 via a bearing 10.11.

A pump blade 12 is attached to the connecting fitting 7, and a pump chamber 13 is formed at the center bottom of the tank 1.

A partition wall 14 is provided on the side surface of the pump 41, and a discharge path 16 from the pump chamber 13 is formed by the partition wall 14. A discharge port 16 of the discharge passage 16 is provided in the upper part of the tank 1, and a lint filter 17 is attached to the discharge port 16.

In the above configuration, when washing, a motor (
When the rotation is transmitted through the deceleration device 6 (not shown), the eccentric shaft 8 precesses, and since the stirring blades 9 are rotatably attached to the eccentric shaft 8, the stirring blades e themselves It hardly rotates and repeatedly oscillates as shown by the solid line and two-dot chain line in Figure 1. Therefore, the peripheral edge of the stirring blade 9 swings vertically and horizontally, and the laundry 18 is uniformly washed while rotating as shown in FIG.

During this time, the pump blade 12 rotates together with the washing 1 drive shaft 6,
The washing liquid is sucked up from the bottom of the dewatering tank 4, and then passed through the discharge path 1.
6, is discharged from the discharge port 16 above the tank 1, and returns to the tank 1 through the lint filter 17.

The movement of the laundry 18 in the tub 1 is such that the bottom part of the tub 1 moves left and right due to the swinging of the stirring blades 9, and is lifted upward along the side wall of the tub 1, and the top part of the tub 1 moves toward the center. Move and rotate up and down. The laundry 18 that falls on the water from the spout 16 occupies less of the water than other parts of the laundry 18, so the laundry 18 moves easily, so there is a large gap in the area where the water falls. A may occur.

The stirring blades 9 are rotatably attached to the eccentric shaft 8,
Since it revolves around the washing drive shaft 6, it rotates slightly left and right. Due to this left and right rotation, the gap generated in the laundry 18 becomes smaller.

At this time, if the washing drive shaft 6 rotates left and right and has the same reversal time, even if the generated part of the laundry 18 moves from the part where the discharged water falls, it will move to the original position when the washing drive shaft 6 rotates in the opposite direction. The gap A between the laundry items 18 becomes larger again.

However, since the left and right flipping times are set differently, the part of the laundry 18 that enters the gap does not return to its original position, and as the left and right flips are repeated, it gradually changes as shown in Figures 2 to 4. moves in one direction, and the gap becomes smaller.

As a result, the laundry 18 in the area where the discharged water falls gradually falls into the tub 1.
Because it moves on the circumference of , the gap A does not occur frequently, and even if it does occur, it gradually becomes smaller. Therefore, there is no uneven distribution in the tub 1, the movement of the laundry is increased, the cleaning performance is improved, and the dehydration startup is performed smoothly, and there is no need to reposition the clothes and restart the laundry as in the past. Dehydration vibration and noise are reduced.

Furthermore, even if the rotation speed of the washing drive shaft 6 is set to different rotation speeds in the left and right directions, or when the time and the rotation speed are changed the same and the rotation stop position of the washing drive shaft 60 is changed and set, the gap A A similar effect can be obtained by changing the position of .

In addition, the eccentric shaft 8 is perpendicular to the bottom surface of the tank 1,
The same effect can be obtained even if it is tilted.

Effects of the Invention As described above, according to the present invention, an eccentric shaft is attached to the washing drive shaft, a stirring blade is rotatably provided on the eccentric shaft, and the left and right rotation stop positions of the washing drive shaft are set at different positions. This eliminates gaps and uneven distribution of laundry, thereby improving cleaning performance, allowing smooth start-up of spin-drying, and reducing spin-drying vibrations and noise.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a centrifugal dehydrating washing machine according to an embodiment of the present invention;
2 to 4 are plan views of the washing tub and dehydration tub of the centrifugal dehydration washing machine. 1...Washing tub and dehydration tank, 6...Washing 2
Drive shaft, 7... Connection fittings, 8... Eccentric inclined shaft, 9... Stirring blades.

Claims (2)

[Claims] (1) Equipped with an eccentric shaft attached to the upper end of the washing drive shaft provided at the bottom of the washing tub and dehydration tank, and a stirring blade rotatably held on the eccentric shaft, washing is carried out by the pump blade provided on the stirring blade. A pump discharge path is formed through which the water in the lower part of the tank/dehydration tank flows out from an opening provided at the upper side of the tank, and the rotation of the washing drive shaft is periodically switched between left and right rotation directions, and is eccentric. A centrifugal dehydrating washing machine that is set so that the left and right rotation stop positions of the shaft are different. (2) The centrifugal dewatering washing machine according to claim 1, wherein the change in the left-right rotation stop position is set by at least the reversal time and rotation speed of the washing drive shaft.