KR101125564B1 - Remaining water circulation system for a drum type washing machine - Google Patents

Abstract

Disclosed is a drum washing machine capable of preventing damage to the tub and drum while circulating the washing residue between the tub and the drum. The tub holds the wash water. The drum is rotatably installed in the tub. A plurality of lifters are installed on the inner wall of the drum in the longitudinal direction of the drum to lift the laundry, and have a plurality of through holes toward the drum's inner space. The water scoop has a predetermined plate shape, and has fixed shafts at both ends so as to be rotatably connected to the lifter, and a torsion spring is provided to provide elastic restoring force to the fixed shaft, and an end of the drum facing the outside of the drum has a predetermined shape. Branched to form. The weight is attached to the other unbranched end of the water scoop, causing the water scoop to be eccentric.

Drum Washing Machine, Residual Circulation, Lifter, Water Scoop, Weight

Description

Residual water circulator in drum washing machine {REMAINING WATER CIRCULATION SYSTEM FOR A DRUM TYPE WASHING MACHINE}

1 is a perspective view showing a drum of a drum washing machine according to the prior art;

2 is a front view showing the drum of the drum washing machine according to a preferred embodiment of the present invention;

3 is a perspective view of a residual water circulation system according to a preferred embodiment of the present invention;

4 is a cross-sectional view taken along line A-A of FIG. 3;

5 is a cross-sectional view taken along the line B-B of FIG. 3,

6 is a view showing the operating state of FIG.

Description of the Related Art

110: tub 120: drum

130: lifter 131: through hole

132: shaft hole 133: boss

140: water scoop 141: goal

142: fixed shaft 143: torsion spring

150: weight

The present invention relates to a drum washing machine, and more particularly, to a drum washing machine capable of preventing damage to the tub and drum while circulating the washing residue between the tub and the drum inside the drum.

The drum washing machine performs a washing process by rotating a drum containing laundry in a tub containing a certain amount of water for washing, by friction between the laundry and the water shock caused by the falling of the laundry.

In a conventional drum washing machine, the rotating shaft of the tub or drum is horizontal, so that a part of the washing water (washing water remaining) is always accumulated between the tub and the drum. Washing water has to be in contact with the laundry to exert the washing effect has been one of the causes to reduce the efficiency of the drum washing machine as a waste of waste is not properly utilized.

The drum of the conventional drum washing machine which can push the washing water into the drum in order to utilize the washing water is in the longitudinal direction in the washing machine drum 22 having a plurality of water holes 21 circumferentially as shown in FIG. Thus, several "V" shaped cross sections are mounted. The top of the lifter 23 forms several drainage holes 25 on both sides. In the portion of the drum 22 on which the lifter 23 is mounted, two water intake holes 26 and 26 'are formed in the longitudinal direction of the lifter 23. One side of the intake hole 26 is formed around the intake guide piece 27 outward, and the other intake hole 26 'forms the intake guide piece 27' outward to the other side.

In the drum washing machine according to the related art, water is drawn into the water intake hole 26 or 26 'by the intake guide piece 27 or 27' which is placed at the lower position when the drum 20 rotates, and the lower position. When the lifter 23 placed in the upper portion is moved to the upper position, the laundry is supplied to the laundry through a drain hole 25 formed at the top of the lifter 23.

However, when the water intake guide pieces 27 and 27 'protrude outwardly from the drum 20, the inner wall of the water intake guide pieces 27 and 27' and tub when the drum 20 rotates at high speed. This contact is likely to be damaged and, if the water intake guide piece (27), (27 ') is protruded to the outside shortly there was a disadvantage that can not efficiently pick up the remaining wash.

The present invention has been made to solve the problems of the drum washing machine according to the prior art described above, an object of the present invention, the drum washing machine which can effectively prevent the damage of the tub and drum during dehydration while efficiently utilizing the remaining water washing To provide a residual water circulation system.

In order to achieve the above object, the present invention,

A tub containing laundry water;

A drum rotatably installed in the tub;

A plurality of lifters installed on the inner wall of the drum in the longitudinal direction of the drum to lift the laundry, and having a plurality of through-holes toward the inner space of the drum;

In a predetermined plate shape, it has a fixed shaft at both ends so as to be rotatably connected to the lifter, a torsion spring for attaching elastic restoring force is attached to the fixed shaft, the branch facing toward the outside of the drum to form a valley of a predetermined shape Water scoops; And

It is attached to the other non-branched end of the water scoop to provide an eccentricity of the water scoop; provides a residual water circulation device of the drum washing machine comprising a.

The water scoop is disposed in the tangential direction of the drum outer circumferential surface by elastically rotating toward the inner space of the lifter when dewatering.

Hereinafter, a residual water circulation device of a drum washing machine according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a front view showing a drum of a drum washing machine according to a preferred embodiment of the present invention, Figures 3 to 6 are views showing a residual water circulation device according to a preferred embodiment of the present invention.

2 to 6, a drum washing machine according to a preferred embodiment of the present invention is disposed in a tub 110 containing wash water and rotatably disposed therein, and a drum 120 containing laundry.

A plurality of lifters 130 are installed on the inner wall of the drum 120 in the longitudinal direction of the drum 120. The lifter 130 is a predetermined container having an empty inside, and includes a stage at the side wall portion. The lifter 130 is installed such that the end faces the inside of the drum 120 and includes a plurality of through holes 131 along the longitudinal direction. As shown in FIG. 4, shaft holes 132 for inserting a fixed shaft of the water scoop to be described below are formed at both ends of the lifter 130 in the longitudinal direction, and the shaft holes are formed around the shaft holes 132. A boss 133 is provided for reinforcing 132.

The water scoop 140 has a predetermined plate shape, as shown in FIGS. 3 and 4, and is vertically disposed on the inner space of the lifter 130. An end portion of the water scoop 140 facing outward of the lifter 130 is branched to form a valley 141 of a predetermined shape, and both ends in the longitudinal direction thereof have a fixed shaft 142. The fixed shaft 142 is inserted into the shaft hole 132 formed at both ends in the longitudinal direction of the lifter 130 to rotatably connect the water scoop 140 with the lifter 130. The fixed shaft 142 is provided with a torsion spring 143 for providing an elastic restoring force so that the water scoop 140 is rotated and then returned to its original position.

Since the rotation radius of the water scoop 140 is smaller than the inner space of the lifter 130, the water scoop 140 may enter the inner space of the lifter 130 during rotation, but as shown in FIG. 6, the water scoop 140 It is preferable that the branched end of the) be about the size of the end that is formed in the lifter 130.

Referring to FIG. 5, a weight 150 for causing eccentricity to the water scoop 140 is attached to the non-branched end of the water scoop 140. It is desirable that the weight is sufficiently larger than the remaining weight of the water scoop except for this.

Hereinafter, with reference to Figures 2 to 6 will be described the washing water residual utilization of the drum washing machine according to an embodiment of the present invention.

When the lifter 130 is positioned below the drum 120 while the drum 120 rotates (about 50 rpm), the remaining water of the washing machine may be lifted as indicated by the arrow of FIG. 2 according to the shape of the water scoop 140. 130) It is pushed in.

The laundry residues pushed back are dropped into the drum 120 through the through hole 131 on the upper part of the lifter 130 when the lifter 130 is positioned above the drum 120. Lifter 130 of the residual water circulation device according to a preferred embodiment of the present invention in such a manner to continuously push the washing water into the drum 120 during the washing stroke to be used for washing.

During dehydration, as the rotational speed of the drum 120 gradually increases, the weight 150 eccentrically attached to the water scoop 140 rotates outward by centrifugal force, so that the water scoop 140 is shown in FIG. 6. It is gradually rotated so as to be substantially parallel to the tangential direction of the outer peripheral surface of the drum (120).

In general, when the water scoop 140 protrudes out of the drum 120, the capacity for circulating the washing water becomes larger, but when dewatering, as the rotation speed increases, the drum 120 and the tub 110 may come into contact with each other. The greater the risk of damage to the tub 110 and the drum 120 is increased.

However, the present invention employs the above-described residual water circulation device, so that the water scoop 140 protruding out of the drum 120 during the dehydration is accommodated in the inner space of the lifter 130, thereby ensuring safety during dehydration. Will be.

After dehydration, the rotation speed of the drum 120 is lowered, and the water scoop 140 gradually returns to its original state by the restoring force of the torsion spring 143.

As described above, the residual water circulator of the drum washing machine according to the preferred embodiment of the present invention can efficiently utilize the washing water residual water because the water scoop protrudes to the outside of the drum, and at the same time, the protrusion of the water scoop is lifted when dewatering. Since it is accommodated in the inner space of the tub and the drum has an effect that can prevent damage.

Although the present invention has been described in detail through the embodiments described above, it will be apparent to those skilled in the art that various changes and modifications can be made within the spirit and scope of the present invention.

Claims (2)

With drum washing machine, A tub containing laundry water; A drum rotatably installed in the tub to accommodate laundry; A plurality of lifters installed on the inner wall of the drum in a longitudinal direction of the drum to lift laundry, and having a plurality of through holes toward the inner space of the drum; It has a predetermined plate shape, has a fixed shaft at both ends so as to be rotatably connected to the lifter, a torsion spring for attaching the elastic restoring force is attached to the fixed shaft, the end toward the outside of the drum is a bone of a predetermined shape A water scoop branched to form; And And a weight attached to the other unbranched end of the water scoop to cause eccentricity of the water scoop. The residual water circulation system of a drum washing machine according to claim 1, wherein the water scoop is disposed in a tangential direction of the drum outer circumferential surface by elastically rotating toward the inner space of the lifter when dewatering.

Images