JPH10137492A - Inner tub of washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase pumping ability and to improve fallen thread collecting ability in a filter by providing an opening/closing means which makes an ascending water current pass through in an inner tub and stops a descending water current in the inner tub in a dehydrating tub. SOLUTION: When washing is performed by rotating a pulsator 5 by means of a motor 4, water current on the bottom part is pumped by pumping action by a wing on the lower part of the pulsator 5 and is elevated through an inner tub 6. In this instance, elevated water current ascends while it opens a valve 10 in the inner tub 6 and is drained from the uppermost outlet and fallen threads in the washing water are collected by a filter 8 for collecting the fallen threads. In a pause period between normal/reverse rotations of the pulsator, the washing water in the inner tub 6 tends to descend and the valve 10 is closed by the reverse current of the water current and the washing water in the inner tub 6 is held at its position. This water is rapidly drained at the next rotation of the pulsation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner tub of a washing machine, and more particularly, to an increase in pumping ability by retaining the potential energy of water that has reached the middle of the inner tub, and an improvement in energy efficiency by improving a bobbin thread collecting ability. The present invention relates to an inner tub of a washing machine that is improved. It should be noted that the bobbin thread in the present specification includes not only the thread itself but also so-called lint, and further includes dust attached to the cloth.

[0002]

2. Description of the Related Art FIG.
And FIG. When the pulsator 5 is rotated by the motor 4, the lower water flow rises through the inner tub 6. The rising water flow is discharged through a discharge port 7 at the top of the inner tub 6. At this time, the loose thread of the discharged water flow is filtered through the loose thread collecting filter 8. on the other hand,
During an intermission period between the forward / reverse rotation of the pulsator, the water flow that has not been discharged even if it is raised by the inner tub falls again. In particular, when the water level in the washing tub is originally high, pumping is easy. However, when the water level is low, large kinetic energy is required for discharge by pumping, and pumping may not be performed well. After all, the washing water that did not reach the discharge port of the inner tub will be lowered as it is, and it will be necessary to raise it again by pumping,
There is a problem that energy efficiency is reduced.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention increases the pumping ability by retaining the potential energy of water reaching a predetermined position of an inner tub. An object of the present invention is to provide an inner tub of a washing machine capable of improving a yarn collecting ability.

[0004]

In order to achieve the above object, an inner tub of a washing machine according to the present invention is provided in a washing machine in which an inner tub is installed inside a dehydration tub to rotate a pulsator to perform washing. An opening / closing means installed in the tub to pass the rising water flow into the inner tub and block the falling water flow is provided.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an inner tub according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 3 shows an inner tub of the washing machine of the present invention. In the inner tub 6, a check valve 10 for passing a rising water flow in the inner tub and blocking a falling water flow is vertically spaced. Are installed. The valve 10 is opened by the force of the rising water flow in the inner tub 6 and closed by the force of the falling water flow in the inner tub 6.

Hereinafter, the operation of the inner tub of the washing machine according to this embodiment will be described. The pulsator 5 is rotated by the motor 4, and the lower water flow is pumped by the centrifugal force of the wing at the lower part of the pulsator and rises through the inner tub 6. The rising water flow opens the valve 10 of the inner tub 6 as shown in FIG. 4 (A) and rises to be discharged through the discharge port 7 at the top. At this time, the waste thread discharged from the washing water is filtered through the waste thread collecting filter 8. During an intermission period between the forward and reverse rotations of the pulsator, the water flow that has not been discharged even when the inner tub is raised falls again. At that time, as shown in FIG. 4 (B), the descending flow closes the valve 10 installed at a fixed position of the inner tub, and eventually water accumulates between the valves 10.

[0007] The washing water accumulated without being lowered by the valve holds a constant potential energy. Therefore, kinetic energy is given by the force of the water flow pumped at the time of the next rotation of the pulsator, and discharge can be performed.

[0008]

As described above, according to the present invention, the water that has reached the predetermined position of the inner tub is pumped while being held at that position, so that the pumping ability can be increased, and the rotation speed of the pulsator can be increased. To improve energy efficiency and reduce the fabric kinking / fabric damage rate.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a general washing machine.

FIG. 2 is a view illustrating a water pumping process of an inner tub of a general washing machine.

FIG. 3 is a view showing an inner tub of the washing machine of the present invention.

FIG. 4 is an enlarged view of a portion A and B in FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Case, 2 ... Washing tub, 3 ... Dehydration tub, 4 ... Motor, 5
... Pulsator, 4 ... Inner tab, 3 ... Discharge port, 4 ...
valve.

Claims (2)

[Claims] 1. A washing machine in which an inner tub is installed in a dehydration tub and a pulsator is rotated to perform washing, wherein a water flow that is installed in the inner tub and that rises into the inner tub passes therethrough and descends. An inner tub for a washing machine, comprising: an opening / closing means for shutting off. 2. The inner tub of a washing machine according to claim 1, wherein the means is a plurality of check valves installed with a positional difference.