KR20000039119A - Drum type washing machine - Google Patents

Abstract

PURPOSE: A drum type washing machine is provided to improve the washing effect of the washing machine by using water wings which are installed in a washing tub. CONSTITUTION: A drub type washing(1) comprises an outer cabinet(3), a washing tub(7), a water tub(5), a driving motor(13), and a suspension device(17). The washing tub(7) is filled with washing water. The driving motor(13) generates a rotational driving force. The water tub(5) is attached to a cabinet(3). A washing article introducing hole(6) is formed on the front side of the washing tub(7).

Description

Drum-type washing machine with turbine blade on the bottom side of washing drum

The present invention relates to a drum washing machine, and more particularly, to form a front water wing and a rear water wing on the front and rear walls of the washing tank to form a water flow in the washing tank in the axial direction in accordance with the rotation direction of the washing tank, so that washing power together with the drop of laundry. It relates to a drum washing machine having a washing tub wings to improve the.

In general, a washing machine includes a pulsator type using water flow by rotation of a pulsator and a drum type using impact force due to vertical fall of laundry by rotation of a drum.

As shown in FIG. 1, the drum washing machine 101 is coaxially arranged with the cabinet 103 forming a large exterior, the storage tank 105 and the storage tank 105 mounted inside the cabinet 103 by rotation. The cabinet 103 with a minimum shaking state of the driving motor 113 and the water storage tank 105 for rotating the washing tank 107 by the washing tank 107, the belt 109, and the pulley 111 for washing the laundry put therein. It is composed of a suspension device consisting of a spring 115 and a damper 117 to support it, and other devices for drainage and water supply and various connection devices are additionally attached.

The front side of the washing tank 107 is provided with a door 121 which is connected in a watertight state by the door bellows 131 for access to the laundry, and the drum slide 123 is integrally attached to the rear of the washing tank 107. The rotary shaft 125 of the washing tub 107 protrudes and is rotatably supported by the bearing 127 on the bearing housing 129 on the central portion of the drum slide 123.

A plurality of locking jaws 119 are attached to the inner circumferential surface of the washing tank 107 to lift the laundry upwards as the washing tank 107 rotates forward and backward, and a drain hose 133 on one side of the bottom surface of the storage tank 105. ) Is connected to the drainage pump 135 operates to drain the washing solution is finished.

In general, the conventional drum type washing machine 101 having the configuration as mentioned above is to wash the laundry through the following process.

First, when the laundry is put into the washing tank 107 and the washing machine 101 is operated, after the water is supplied into the washing tank 107 through the water supply valve and a predetermined quantity is supplied, the washing liquid is heated by the heater 112 while the motor is heated. 113 is driven, and the rotational force of the motor 113 generated through the motor pulley 137, the drive belt 109, the belt pulley 111, the rotating shaft 125 and the drum slide 123 through the washing tank ( 107). When the washing tank 107 rotates by the rotational driving force transmitted in this way, the laundry in the washing tank 107 is lifted upward by the lift 119 protruding from the inner circumferential surface of the washing tank 107 and then falls downward again. The impact on the washing liquid, and the impact force generated at this time, the contaminants on the laundry come off the laundry, washing is performed by repeating this drop motion several times.

The washing tank 107 repeats the forward and reverse rotation at a low speed, that is, about 50 to 55 rpm while the washing operation is performed, and when dewatering, the washing tank 107 rotates at a high speed, that is, at a speed of 800 to 1000 rpm. After exiting the reservoir 105 through a number of fine holes (not shown) formed in the circumferential wall of the washing tank 107 is drained out through the drain hose 133 by the pumping force of the drain pump 135.

At this time, as shown in Figure 2 during the washing in the washing tank 107 and the reservoir 105, the water surface 110 stays at the 1/3 point at the bottom, so the laundry is caught up by the catching jaw 119, the water surface from the top ( Impact force generated while falling to 110) or only the flow of the washing water flowing from the bottom of the washing tank 107 to the left and right can be used as the washing force. Although the impact generated helps a little in washing, the amount of water to be pumped up was not very helpful in improving washing power.

In order to overcome the limitation of the washing power increase by such washing water, a plurality of brushes 205 on the inner circumferential surface of the washing tank 203, such as the drum washing machine 201 disclosed in the Korean Utility Model Registration Application No. 89-20240 shown in FIG. Drum washing machine with a has been proposed.

Like the drum washing machine 201, the drum washing machine 201 receives washing liquid flowing through the water supply pipe 209 into the water tank 207 and washes and rinses by the rotational movement of the washing tank 203 rotating forward and backward in the water tank 207. After the dehydration, the water is discharged through the drain pipe 211 to finish a series of washing operations. In particular, in addition to the dropping of the laundry during the washing process, the washing force was improved by the frictional force of the brush 205. At the time of washing, since the rotation speed of the washing tank 203 is not large, the friction force is not largely generated between the laundry and the brush 205.

Accordingly, the present invention has been made in view of the above-described conventional problems, by forming a water wing on the front and rear walls of the washing tank to form a water flow in the washing tank in the axial direction according to the rotation direction of the washing tank to increase the washing force with the drop of laundry. The object is to provide a drum washing machine that can be further improved.

1 is a side cross-sectional view showing a conventional drum washing machine formed with a locking jaw on the inner circumferential surface of the washing tank.

2 is a schematic front cross-sectional view of FIG.

Figure 3 is a schematic front sectional view showing a conventional drum washing machine with a brush formed on the inner peripheral surface of the washing tank.

4 is a schematic front cross-sectional view of a drum washing machine according to an embodiment of the present invention.

FIG. 5 is a partially cutaway perspective view illustrating a washing tub of the drum washing machine shown in FIG. 4.

FIG. 6 is a view illustrating a current flow in a state in which bending directions of the front water wings and the rear water wings of the washing tank shown in FIG. 5 are the same.

Figure 6a is a water flow form when the washing tank rotates in the A direction

Figure 6b is a view of the water flow when the washing tank rotates in the B direction

FIG. 7 is a view illustrating a current generation state in a state in which bendings of the front water wings and the rear water wings of the washing tank shown in FIG. 5 are formed in opposite directions.

Figure 7a is a water flow form when the washing tank rotates in the C direction

Figure 7b is a view of the water flow when the washing tank rotates in the D direction

Explanation of symbols on the main parts of the drawings

1: drum washing machine 3: cabinet

5: reservoir tank 7: washing tank

9: hang jaw 10: washing liquid distributor

13: drive motor 18: front water wing

19: rear water wing 20: washing liquid circulation hole

25: rotating shaft 31: water supply pipe

32: water supply valve 33: drain pipe

35: drain pump 37: detergent container

The present invention for achieving the above object is provided in the drum washing machine in which the cylindrical laundry tank into which the laundry is put is arranged laterally in the water storage tank, a plurality of washing liquid distribution holes are formed through the circumference of the washing tank, The front water wing for forming the water flow in the axial direction on the barrier is bent in the predetermined direction, the rear water wing for forming the water flow in the axial direction on the rear wall is bent in the predetermined direction, the front water wing and An object of the present invention is to provide a drum washing machine in which a plurality of washing water circulation holes communicating inner and outer sides of a washing tank are formed on front and rear wall surfaces at which rear water wings are formed.

On the other hand, in the embodiment of the drum washing machine according to the present invention there is provided an example formed in the bending direction of the front water wing and the rear water wing is the same as each other and formed in the opposite direction to each other.

Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings.

4 and 5 illustrate a drum washing machine (1) having a washing tub vane according to an embodiment of the present invention, the drum washing machine (1), like the existing drum washing machine (3), in which laundry is introduced Suspension device 17 for attaching and supporting the washing tank 7, the water storage tank 5 filled with the washing liquid, the drive motor 13 for generating the rotational driving force of the washing tank 7, and the water storage tank 5 to the cabinet 3. By having a basic configuration.

Here, the laundry input hole 6 formed in front of the washing tank 7 is provided with a door 21 for opening and closing the laundry when the laundry is put in, and the door 21 is in a state of maintaining watertightness by the bellows 31. It is connected with the cabinet 3. The rotating shaft 25 coupled to the shaft hole 8 at the rear of the washing tank 7 is supported by the storage tank 5 so as to be rotatable by the bearing 16, and the driving motor 13 is mounted on the bottom of the storage tank 5. do. At this time, the rotational force of the drive motor 13 is made to be transmitted to the washing tank 7 via the motor pulley 14 and the belt 12 and the belt pulley 11 of the rotating shaft 25.

In addition, a plurality of washing liquid distribution holes 10 are formed in the washing tank 7, and a plurality of locking jaws 9 extend at a predetermined interval in the washing tank 7 in the longitudinal direction on the inner circumferential surface of the washing tank 7. The drainage hose 33 is connected to the bottom surface of the water storage tank 5, and a drain pump 35 for extracting the washing liquid is installed in the middle of the drain hose 33. In addition, the upper part of the reservoir tank 5 is provided with a detergent container 37 in which detergent is put in communication with the reservoir tank 5, and one side of the detergent container 37 is provided with a water supply pipe 31 and a water supply valve 32. .

In addition, the front water wings 18 and the rear water wings 19 are formed on the front and rear walls of the washing tank 7, and a plurality of washing water circulation holes 20 are formed to communicate the inside and outside of the washing tank 7. . At this time, the washing water circulation hole 20 is formed with a small diameter that can prevent the laundry in the washing tank 7 to flow out.

In addition, the front water wing 18 and the rear water wing 19 is the injection hole so that the water flow in the longitudinal direction of the washing tank 7, that is, in the direction of the rotating shaft 25 while rotating the washing tank 7 is rotated synchronously ( 6) and the shaft hole 8 is formed around each bent. That is, the front wing 18 and the rear wing 19 is formed similarly to the shape of the blade, such as a turbine, propeller, pulsator, etc. to generate pressure through the axial torsional bending difference.

The front water wing 18 and the rear water wing 19 are formed in two forms: a coaxial wing structure having the same water flow direction and a counter wing structure having a different water flow direction.

First, in the case of the co-directional wing structure, as shown in FIGS. 6A and 6B, the unidirectional water flow is elongated in the axial direction according to the rotation direction of the washing tub 7. And, in the case of the opposing wing structure, as shown in FIGS. 7A and 7B, the countercurrent water flow is formed inside the washing tank 7 and the washing tank 7 outside according to the rotation direction of the washing tank 7.

Referring to the operation of the drum washing machine 1 of the present invention configured as described above are as follows.

First, the first laundry is put into the washing tank (7), and then the washing liquid is supplied from the water supply pipe (31) to the water storage tank (5) via the detergent container (37). When the supplied washing liquid 2 reaches an appropriate level, washing of the washing tank 7 starts and washing starts. At this time, the laundry in the washing tank (7) is pulled up in the rotational forward and reverse direction by the locking jaw (9) and is washed while repeating the process of falling from the upper end of the washing tank (7), at the same time the washing liquid is also by the locking jaw (9) Slightly scooped up and dropped, washing laundry at the bottom.

In this process, the front water wing 18 and the rear water wing 19 formed on the front and rear walls of the washing tank 7 generates a pressure difference while rotating synchronously with the washing tank 7. At this time, the washing liquid in the washing tank (7) and the washing liquid outside the washing tank (7) is axially entered through the washing liquid circulation hole 20 by the pressure difference by the front water wing (18) and the rear water wing (19) Will form a stream of water.

For example, when the bending directions of the front water wings 18 and the rear water wings 19 formed on the front and rear walls of the washing tank 7 are the same, as shown in FIG. 6A, the washing tank 7 is in the A direction. When rotated to the front water wing 18 and the rear water wing 19 to form a one-way water flow in the a direction, when the washing tank 7 is rotated in the opposite direction B direction the front water wing 18 And rear wing 19 are also synchronously rotated in the opposite direction to form a unidirectional water flow in the b direction. At this time, the laundry in the washing tank (7) hits the washing liquid while reciprocating in both directions along the water stream, and directly hits the front water wing (18) and the rear water wing (19) to obtain a washing force such as tapping with a laundry bat. It becomes possible.

On the other hand, when the bending directions of the front water wings 18 and the rear water wings 19 formed on the front and rear walls of the washing tank 7 are opposed to each other, as shown in FIG. 7A, the washing tank 7 is When rotated in the B direction, each of the front water wing 18 and the rear water wing (19) forms an opposite water flow to move the washing liquid located in the c direction, that is, both sides of the washing tank (7) to each other, again the washing tank When (7) rotates in the opposite direction D, the front water wing 18 and the rear water wing 19 also rotates in the opposite direction while moving the washing liquid in the D direction, that is, the center of the washing tub 7 in both directions. It will create an opposite stream of water. At this time, the laundry in the washing tank (7) hit each other while reciprocating by the opposite water flow, and at the same time hit with the washing liquid, and hit directly with the front water wing (18) and rear water wing (19), such as tapping with a laundry bat Washing power can be obtained.

Therefore, the present invention increases the friction force between the laundry and the wash liquid by using the impact force according to the axial flow of the front water wing 18 and the rear water wing 19 and the impact force caused by direct collision, thereby further increasing the washing power. .

As described above, the present invention is to form the propeller-shaped front and rear water wings on the front and rear walls of the washing tank, respectively, and through the plurality of washing liquid circulation holes formed on the front and rear water wings in the axial direction of the washing tank according to the rotation direction of the washing tank. It is possible to form a stream of water.

Therefore, the present invention further facilitates the dissolution of the detergent by activating the friction according to the flow of the laundry and the washing liquid by using the axial water flow, as well as the washing force and rinsing of the laundry together with the drop impact force of the laundry by the locking jaw. There is an effect that can be further improved.

Furthermore, the present invention is to effect the power to obtain a strong washing power by kneading and pressing by hand and as if it is rubbing on the washboard by directly hitting the front and rear water wings rotating while moving according to the rotational flow of the axial direction There is.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (3)

In a drum washing machine in which a cylindrical washing tank (7) into which laundry is put is arranged side by side in a water storage tank (5), and a plurality of washing liquid distribution holes (10) are formed through the circumference of the washing tank (7). The front water wing 18 for forming the water flow in the axial direction on the front wall of the washing tank (7) is bent in the input hole 6 in a predetermined direction, the rear water wing for forming the water flow in the axial direction on the rear wall A plurality of washing water circulation holes 20 are bent in a predetermined direction and communicate the inside and outside of the washing tub 7 to the front and rear wall surfaces on which the front water wings 18 and the rear water wings 19 are formed. Drum washing machine, characterized in that is formed. The drum washing machine according to claim 1, wherein the front water wing (18) and the rear water wing (19) are bent in the same direction. The drum washing machine according to claim 1, wherein the front water wing (18) and the rear water wing (19) are bent in opposite directions.