JPS637798B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a washing machine that prevents laundry from getting tangled and twisted, which are drawbacks of washing machines.

``Prior Art'' Nowadays, washing machines are becoming more and more popular, and most of them in Japan are of the whirlpool type, for example, one in which a rotating body for stirring water is provided at the bottom of the washing machine.
However, this type has the disadvantage that the water in the washing tub rotates in a spiral pattern during washing, causing the laundry to become entangled or twisted. If the laundry is tightly tangled or twisted, no matter how vigorously you stir the water, the laundry will just spin with the water and will not be sufficiently effective at washing or rinsing, and the laundry will be more likely to get damaged. Also, it takes a lot of time and effort to untangle the laundry.

"Problems to be Solved by the Invention" In view of the above-mentioned drawbacks, the present inventor has studied various washing machines that prevent laundry from tangling, twisting, etc., and has completed the present invention.

``Means for Solving the Problems'' That is, the present invention provides a tube that prevents the laundry from getting entangled in the swirl in a washing machine that generates a water flow that descends while approaching the center in a spiral shape. This washing machine is characterized in that a pillar shaped like this and having a gap at the top can be installed in the center of the washing tub.

The present invention will be explained in detail below.

In a washing machine in which a rotating body is installed at the center of the bottom of the washing machine, water swirls due to the rotation of the rotating body. At this time, the water descends toward the center of the rotating body while swirling, and this movement of water is the main cause of tangling and twisting of the laundry. This movement of water is particularly rapid right above the rotating body, that is, near the center of the bottom of the washing tub.

As mentioned above, when the rotating body rotates, a strong swirl occurs in the center of the washing tub, so when washing with a conventional washing machine, the laundry gets caught up in this swirl, but with the washing machine of the present invention, For example, since there is a cylindrical ridge (pillar) with a gap in the center of the washing tub, the laundry does not get caught up in the whirlpool. Therefore, they do not become entangled or tightly twisted as in the past. Further, if the pillar has a cylindrical shape or other space inside, water can flow into the pillar through the gap between the pillars, so that the water flow is not obstructed. The gap between the cylindrical pillars is such that the wall of the cylinder is lattice-like, net-like, plate-like with many holes, etc. Note that in the upper part of the rotating body near the rotating body, water flows toward the center with strong force, so that the laundry may be pressed near the base of the column. Therefore, if there is no gap between the midpoint between the apex and the base of the column and the area near the base of the column, water will flow from the top of the cylindrical column where there is a gap, which can compensate for this drawback.

This washing machine can prevent the laundry from getting entangled, so the laundry will not be concentrated in one place in the washing tub during washing. Since the laundry does not get tangled or tilted, stability during high-speed centrifugal dehydration can be ensured even in the case of a single-tub washing machine with a built-in centrifugal dehydration drum.

A washing machine in which the protuberances (columns) are conical is also one of the embodiments of the washing machine according to the present invention.

Providing a ridge (pillar) in the center of the washing tub may seem at first glance to narrow the washing volume, but this is not the case. In conventional washing machines, the laundry becomes tightly tangled and clumped together in the center of the tub, leaving the periphery relatively empty. The protuberances (pillars) in the washing tub according to the present invention prevent the laundry from being unevenly distributed in the center, and on the contrary contribute to the effective use of the washing volume in the washing tub.

As one of the embodiments of the present invention, as a means for installing a ridge (pillar) in the washing tub, the ridge (pillar) is installed in the wall and the center of the bottom of a cylindrical container with many gaps at the bottom. Also included within the scope of the present invention are washing machines in which the pillar is a raised column.

FIG. 2 is a cross-sectional view of a washing tub of an embodiment of a washing machine according to the present invention. As shown in the figure, water flows downward in the center of the cylindrical device, that is, in the center of the washing tub. On the other hand, at the peripheral edge of the bottom of the appliance, that is, the peripheral edge of the bottom of the washing tub, the water sent out from the rotating body flows upward.

FIG. 1 is a partially cutaway view showing a cylindrical container device with many gaps in the wall and bottom where the ridges (columns) are cylindrical. This container is large enough to fit almost completely into the washing tub of a washing machine, and is installed in the washing tub and laundry is carried out by placing the laundry inside. This device is preferably made of a material lighter than water and has a float, which rotates together with the water in the washing tub when the rotating body rotates. The float may be any suitable float as long as it provides buoyancy so that the bottom of the appliance does not touch the bottom of the washing tub or the rotating body during washing. The device has a diameter slightly smaller than the inscribed circle of the tub so that it can rotate freely with the water in the tub as it rotates.

In addition, if the cylindrical device is made of a material with appropriate flexibility and elasticity, in the case of a single-tub washing machine described later, it will be pressed against the peripheral wall of the device by centrifugal force during high-speed spin-drying, making it stable. You can get sex.

FIG. 2 is a sectional view of a washing tub of a single-tub type washing machine in which a centrifugal dewatering drum is installed in the washing tub, and such a single-tub type washing machine is also a subject of the present invention. In the case of single-tank washing machines, after washing and draining, the laundry is dehydrated by rotating the centrifugal dehydration drum at high speed, but in this case, if the laundry is unevenly loaded, smooth rotation will be hindered, causing vibrations and noise. Problems such as this may occur. In conventional washing machines that cannot prevent laundry from becoming entangled, the laundry tends to become uneven during high-speed spin dehydration. In particular, fully automatic one-tub washing machines have the disadvantage that high-speed spin-drying is carried out without correcting imbalances because there is no human intervention between draining and spin-drying. In the single-tub washing machine according to the present invention, the centrifugal force dehydration drum is equipped with tangle-preventing protuberances (pillars), so that the laundry does not get tangled, which is the cause of unevenness, and the laundry does not get tangled during high-speed rotation dehydration. Trouble caused by bias can be prevented.

"Effects of the Invention" As is clear from the above, according to the present invention, by installing a cylindrical column with a gap in the center of the washing tub, laundry is prevented from being caught in a whirlpool. Since items are prevented from tangling and twisting, washing and rinsing can be carried out efficiently, saving water and energy, and also eliminating the hassle of untangling tangled laundry.

In particular, if a gap is provided at the top of the column, the laundry will not be pressed against the bottom of the column where the swirling water flow is strongly absorbed, and more water in the upper layer of the washing tub will flow into the cylindrical column through the gap at the top. It descends and circulates within the pillar.

Furthermore, when the cylindrical container is used as a means of installing pillars in the washing tub, the laundry can be prevented from being rubbed by the rotating body or damaged by being strongly twisted, which is the case in many conventional washing machines. can solve the serious shortcomings of

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway view of a cylindrical container device that is a means of installing pillars in a washing tub according to the present invention, and FIG. 2 is a cross-sectional view of a washing tub of an example of a washing machine according to the present invention. It is a diagram. 1...Peripheral wall, 2...Column (cylindrical protuberance), 2'...
Conical column (conical bulge), 3...bottom, 4...float,
5... Extension of peripheral wall, 6... Rotating body, 7... Centrifugal dewatering drum, 8... Flywheel, 9... Washing tub, 1
0...Water surface.

Claims (1)

[Claims] 1. In a washing machine that generates a water flow that descends while approaching the center in a spiral shape, the washing machine is cylindrical and has a gap at the top to prevent the laundry from getting caught up in the spiral and from becoming tangled. A washing machine characterized in that a pillar having a column can be installed in the center of a washing tub. 2. The washing machine according to claim 1, wherein the pillar is a cylindrical container installed in the washing tub and has a raised center portion at the bottom with many gaps between the walls and the bottom.