KR100313644B1 - wash aligning apparatus and operating method for drum washing machine - Google Patents

Abstract

The present invention relates to a laundry cloth separation prevention device and a driving method of the drum washing machine, the outer shell and the drum are sequentially disposed on the inner side of the case, the door is hinged to the case side, absorbs the vibration of the outer shell and at the same time And a drum washing machine in which a diaphragm is disposed to be in close contact with each end of the outer tub and the case so as to seal between the case and the case, wherein the inner end of the diaphragm 209 is disposed so that the laundry cloth does not escape to the outside of the drum 203. (229) is provided with a laundry cloth separation prevention device, and a drum washing machine for performing the initial stroke to rotate the drum at a low speed initially for a predetermined time, and then perform the main dehydration stroke to increase the rotational speed of the drum in earnest The driving method of the. According to such a configuration, the size and weight of the door can be reduced, the door can be opened and closed easily, and the washing cloth is prevented from coming out of the drum while preventing the drum and the door from crushing. You can prevent it.

Description

Wash aligning apparatus and operating method for drum washing machine

The present invention relates to a laundry cloth separation prevention device of the drum washing machine.

As shown in FIG. 1, a conventional drum washing machine includes a drum 7 disposed inside the case 1 to receive and rotate a rotational force of the motor 3 through a belt 5, and the drum 7 is rotated. An outer tub 9 is disposed between the case 1 and a door 11 so as to seal the outer tub 9 at the same time as putting the laundry cloth into or out of the drum 7 on one side of the outer tub 9. ) Is hinged to the case (1), the operation unit 13 is coupled to the upper side of the outer tank (9), one side of the operation unit 13 is a detergent container containing a detergent to be injected into the outer tank (7) (15) is coupled to the rear side of the detergent container 15, the water supply means 17 is disposed so as to sweep the detergent contained in the detergent container 15 by the wash water to flow detergent and wash water into the outer tank (7) Under the outer tank (9), drain means (19) for discharging the wash water stored in the outer tank (9) It is a seoldoen structure.

The circumferential surface of the drum 7 has a plurality of through-holes so that water flows between the outer tanks 9 during the washing stroke and water in the drum 7 flows out through the centrifugal force during the dehydrating stroke and the drying stroke. 7a) is formed. In addition, a plurality of stirring portions 7b are formed on the inner circumferential surface of the drum 7 so as to drop the laundry cloth to a certain height when the drum 11 is rotated and to make the water flow turbulent.

A diaphragm (not shown) is disposed between the outer tub 9 and the case 1 to absorb the vibration of the outer tub 9 and to seal the gap between the outer tub 9 and the casing 1. A balance weight 21 is attached to the front side of the 9 to prevent vibration generated during washing, dehydration, and drying stroke, and a drying heater 23 to dry air during the drying stroke on the outer circumferential surface of the outer tub 9. ) Is coupled to one side of the drying heater, the fan 25 is arranged to send the air in the outer tank (9) to the drying heater (23). One side of the drying heater 23 is coupled to the guide tube 26 to guide the air dried in the drying heater 23 into the outer tank (9).

The water supply means 17 is a cold water pipe and hot water pipes are separately coupled to supply cold water and hot water, respectively, the cold water pipe and hot water pipes to control the water supply of the cold water and hot water as a general water supply structure coupled to the valve It is. A cold water pipe 27 is coupled to the water supply means 17 to supply a small amount of cold water to the drying heater.

The drainage means 19 has a structure in which a filter 29 that filters foreign substances in the middle of the drainage pipe 28 is coupled, and a drainage pump 31 is coupled to the place where the filter 29 passes past the filter 29 to increase drainage force. .

In the conventional general drum washing machine configured as described above, the door 11 is opened, the laundry cloth is put into the drum 7, the detergent container 15 is opened, the detergent is contained in the detergent container 15, and then the door 11 is opened. At the same time, the detergent container 15 is pushed into the container, and then washing conditions are selected by the operation unit 13, the valve of the water supply means 17 is opened, and cold water or hot water is introduced into the container 15 through the hose. Inflow.

Cold water or hot water introduced into the detergent container is swept with the detergent and introduced into the tub 9 and the drum 7 together with the detergent, and then the rotational force according to the operation of the motor 3 is mediated by the belt 5, not shown. The drum 7 is rotated by being transmitted to the driving device.

As the drum 7 rotates, washing is performed while the laundry cloth and the washing water are pulled up and dropped by the stirring portion 7b formed on the drum 7.

After the washing is finished, the washing water is discharged according to the operation of the draining means 19, and when water is supplied through the water supply means 17, rinsing is performed several times. At this time, the foreign matter contained in the discharged water is filtered by the filter 29, thereby increasing the drainage force by the operation of the drain pump 31.

After the rinsing, the drum 7 is rotated and the drying heater 23 and the fan 25 are operated to perform dehydration and drying stroke. That is, the dry air that is dried by the drying heater 25 and enters the outer tank 9 and the drum 7 through the guide tube 26 is absorbed by the laundry cloth and is converted into wet air, and the wet air is a fan 25. By condensation by a small amount of cold water supplied through the cold water pipe 27 during the movement to the drying heater 23 by the operation of).

The condensed water generated by the condensation of the wet air is discharged through the drainage means 19 together with the cold water supplied through the cold water pipe 27, and the air is converted into dry air heated by the drying heater 23 to guide the air. As the circulation continues through the tube 26, the dehydration and drying of the laundry cloth in the drum 7 takes place. At this time, the passage leading from the detergent container 15 to the guide tube 26 is blocked, and the passage leading from the water supply valve to the cold water pipe 27 is opened.

2 is a partial cross-sectional view showing a portion of the drum washing machine is configured as described above, the door is coupled, a cross-sectional view showing a conventional laundry cloth separation prevention device to prevent the laundry cloth is separated from the drum by the door of the drum washing machine,

As shown in the drawing, a drum 103 that is rotated by the rotational force of the motor is disposed inside the case 101, and an outer tub 105 is disposed between the drum 103 and the case 101. On the 101 side, a door 107 is hinged to the case 101 so as to seal the outer tub 105 while injecting or removing a laundry cloth into the drum 103, and the outer tub 105 and the outer tub 105. The diaphragm 109 is disposed between the cases 101 to absorb the vibration of the outer tub 105 and to seal the gap between the outer tub 105 and the casing 101.

Both ends of the diaphragm 109 are fitted to the case 101 and the outer tub 105, respectively, and extend inwardly from a portion fitted to the outer tub such that the diaphragm 109 has a predetermined distance C from the end of the drum 103. It is.

In this structure, the laundry cloth in the drum 103 is pushed outward by the centrifugal force during dehydration. At this time, the laundry cloth is caught in the gap C, so that the laundry cloth is not only damaged but also noise is generated. To prevent this, the door 107 protrudes deeply inward from the opening of the case 101 so that the rear end thereof enters the right side more than the gap C. The outer diameter of the protruding portion is as large as possible, and the distance G from the end of the drum 103 is small.

In this structure, since the laundry cloth is squeezed on the right side surface 107a of the door 107 and then moved in the direction of arrow D to the middle inner circumferential surface of the drum 103, the laundry cloth moves outward by centrifugal force. There is no fear of leaving the drum in the middle and being caught in the gap C.

However, in the conventional laundry cloth prevention device for preventing the separation and pinching of the laundry cloth by forming the protrusion of the door 107 deeply into the drum as described above, the door protrusion is large because the weight of the door has to be increased. In the hinge portion of the frequent breakdown, opening and closing the door is inconvenient, there was a problem that the material cost of the door is high.

In addition, since the distance G between the outer surface of the protrusion of the door and the end of the drum 103 is small, when the drum rotates while tilting due to the unbalance of the laundry cloth, an abnormal phenomenon occurs that the drum and the door crush. There was a problem that the life of the washing machine is significantly shortened.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to reduce the size and weight of the door and to facilitate the opening and closing of the door, as well as to prevent the drum and the door from crushing the laundry cloth outside the drum. It is to provide a laundry cloth separation prevention device and a driving method of the drum washing machine to prevent the separation.

1 is a perspective view showing a conventional general drum washing machine,

Figure 2 is a cross-sectional view showing a conventional laundry cloth separation prevention device for preventing the laundry cloth is separated from the outside of the drum by the door of the drum washing machine

Figure 3 is a cross-sectional view showing the door side of the drum washing machine coupled to the laundry cloth separation prevention device of the present invention.

4 is a longitudinal sectional view showing the diaphragm of FIG. 3;

5 is a plan view seen from the arrow A-A line in FIG.

6 is a graph showing an example of an operation method for controlling the rotation speed of the drum of the drum washing machine according to the present invention.

<Description of the symbols for the main parts of the drawings.

201: Case 203: Drum

205: outer tank 207: door

209: diaphragm 211: recessed part

213; Bend 215: Guide

217: engaging portion 219: right end outer surface

221: inclined portion 227: extension portion

229: locking jaw 231: bend

Washing cloth separation prevention device of the drum washing machine according to the present invention made to achieve the above object, the outer shell and the drum is disposed in the inner side of the case, the case is hinged to the door side, and absorbs the vibration of the outer shell and At the same time, a drum washing machine in which a diaphragm is disposed in close contact with each one end of the outer tub and the case so as to seal between the outer tub and the case, wherein an inner end portion of the diaphragm is provided with a locking step so that the laundry cloth does not escape to the outside of the drum. It is characterized by.

The locking jaw may be formed over the entire circumference to protrude into the predetermined length along the inner circumferential surface of the diaphragm, but even if formed at a predetermined length along the inner circumferential surface of the diaphragm, the separation of the laundry cloth can be sufficiently prevented. .

The outer surface of the right end of the protrusion of the door is preferably in a position aligned with the left end of the drum. And it is preferable that the protrusion part of the door inclines, and the lower side protrudes more than the upper side as a whole.

In the operation method of the drum washing machine according to the present invention, in the operation method of rotating the drum during dehydration, after performing an initial stroke for initially rotating the drum at a low speed for a predetermined time, the main speed of performing the dehydration by raising the rotational speed of the drum in earnest It is characterized by performing a dehydration stroke.

After the initial stroke, it is preferable to additionally perform an intermediate stroke which repeats the operation of raising the predetermined rotation speed and then lowering the rotation speed of the initial stroke again a predetermined time.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail. Hereinafter, with reference to the cross-sectional view showing the door side of the drum washing machine coupled to the laundry cloth separation prevention device of the present invention.

As shown in Fig. 3, inside the case 201, a drum 203 which is rotated by the rotational force of the motor is disposed, and an outer tub 205 is disposed between the drum 203 and the case 201. The door 201 is hinged to the case 201 to seal the outer tub 205 at the same time as putting the laundry cloth into or out of the drum 203 on the side of the case 201, and the outer tub. A diaphragm 209 is disposed between 205 and the case 201 to absorb the vibration of the outer tub 205 and to seal the gap between the outer tub 205 and the casing 201.

The case 201 forms an outer surface of the drum washing machine and has a rectangular cylindrical shape as a whole. A concave inlet 211 is formed on the front side of the case 201 so that the door 207 is easily coupled, and inside the concave inlet 211, the door 207 is closed toward the inside of the drum. An opening is formed so that an end portion of the concave inlet portion 211 forming the opening is formed with a bent portion 213 that is bent outwardly so as to be caught at one end of the diaphragm 209.

The drum 203 has a laundry cloth inside thereof and has a cylindrical shape as a whole. The door side part of the drum 203 becomes a guide part 215 which protrudes outwards to guide the laundry cloth while the diameter thereof becomes smaller, and the end edge of the guide part 215 is rolled up roundly.

The outer tub 205 surrounds the drum 203 and is generally shaped like the drum. At the end of the door side portion of the outer tub 205, a locking portion 217 is formed to be caught and sealed at the right side of the diaphragm 209, and the locking portion 217 has two hooks that are open to both sides in opposite directions. It is shaped.

The door 207 has an unsymmetrical basin shape, and the bottom of the basin, that is, the protrusion, faces the drum 203. The left side of the door 207 may be blocked and the inside thereof may be a space.

The right end outer surface 219 of the protrusion of the door 207 is in a position aligned with the end of the guide portion 215 of the drum 203. In addition, an upper portion of the right outer surface of the protrusion of the door 207 is formed as an inclined portion 221 inclined in the upper left direction, and the lower side protrudes more than the upper side as a whole. This configuration not only stabilizes the door by moving the center of gravity to the lower side of the door, but also causes the laundry cloth to be caught in the gap between the drum and the diaphragm in an embodiment in which the locking step described below of the diaphragm is not formed below the diaphragm. It is effective to prevent it.

The diaphragm 209 is made of a material having elasticity and flexibility, such as rubber, and is shown separately in FIG. As shown, the diaphragm 209 is in close contact with the rim of the door 207 and at the same time the outer sealing portion 223 to which the bent portion 213 of the case is caught, and the engaging portion 217 of the outer tub. The inner sealing part 225 to be closed and sealed, the extension part 227 extending to face the end of the guide part 215 of the drum at a predetermined interval, and the extension so that the laundry cloth does not leave the drum. The hooking part 229 protruded from the part 227 and bent toward the drum, and the bent part bent a plurality of times so as to connect the outer sealing part 223 and the inner sealing part 225 and absorb vibration of the outer tank at the same time. (231).

The outer sealing portion 223 is formed with a curved groove 233 so that the bent portion 213 of the case is sandwiched, the left side portion of the door 223 when the door 223 is closed as shown in FIG. It is deformed to be in close contact.

The inner sealing part 225 has a space formed on an outer surface thereof so that the locking part 217 is sandwiched, and the locking jaw part 229 has a needle-shaped cross-sectional shape projecting inwardly from the extension part 227. It is. In addition, the curved portion 231 is thinner than other portions of the diaphragm to effectively absorb vibration.

As illustrated in FIG. 5, the locking jaw portion 229 is formed to have a length of only a predetermined angle a on the upper side of the diaphragm. At this time, the locking jaw may be formed along the entire circumferential surface, even if the laundry cloth is caught only from the upper side while the drum rotates, the laundry cloth is sufficiently moved inside the middle part of the drum, thereby preventing the laundry cloth from being separated.

Reinforcing ribs 235 and 237 for reinforcing the diaphragm to maintain the shape of the diaphragm are formed in the singer extension part 227 and the locking jaw part 229, respectively.

In the laundry cloth separation prevention device of the drum washing machine according to the present invention configured as described above, the rotational speed of the drum is gradually increased during dehydration so that the laundry cloth moves toward the inner circumferential surface of the drum by the centrifugal force. While hitting the latching jaw portion 229, the direction of the laundry cloth is twisted by about 90 degrees so that the laundry cloth moves to the intermediate portion of the drum to be in close contact with the inner circumferential surface of the drum.

On the other hand, since the drum slowly rotates during dehydration, gravity acts on the laundry cloth. Therefore, although there is a space between the engaging jaw portion 229 of the diaphragm and the inclined portion 221 of the door, the laundry cloth moves downward by gravity and falls on the outer surface 219 of the door. When the rotation speed increases in this state, the laundry cloth moves in the radial direction with respect to the outer surface 219, so that the cloth does not kick in the space between the engaging jaw portion 229 of the diaphragm and the inclined portion 221 of the door.

Thus, in order to drive the laundry cloth so as not to occupy the space between the engaging jaw portion 229 of the diaphragm and the inclined portion 221 of the door, the drum is initially rotated at a low speed for a predetermined time, and then the driving speed of the drum is increased. It is preferable.

An example of such a dehydration driving method is shown in FIG.

That is, after performing the initial stroke (S1) to maintain the drum 203 for 10 to 30 seconds at 90rpm, and then raised to 400rpm and then raised to 90rpm again and then raised to 600rpm and lowered to 90rpm after a predetermined time After the intermediate stroke S2 is held, the main dehydration stroke S3 is performed to maintain a predetermined time at each rpm while raising the speed to 850 rpm and 1000 rpm and 1200 rpm.

In this way, by controlling the rotational speed of the drum during dehydration, the laundry cloth is brought into close contact with the inner surface of the middle of the drum without leaving the outside of the drum, thereby preventing the laundry cloth from being damaged and preventing noise. At this time, the locking jaw portion 229 is such that the laundry cloth moving in the radial direction from the right end outer surface 219 of the door so as not to be caught in the gap between the diaphragm and the drum to change the direction inward.

In the present invention, since the size of the protrusion of the door does not have to be increased, the weight of the door is small so that a failure does not occur in the hinge portion of the door, the door is easy to open and close, and the material cost of the door is low. In addition, since the space between the protrusion of the door and the end of the drum is large, even if the drum is inclined due to the unbalance of the laundry cloth, the drum and the door are not crushed.

Therefore, according to the laundry cloth separation prevention device and the operation method of the drum washing machine according to the present invention, not only reduces the size and weight of the door of the drum washing machine and makes the door easy to open and close, but also prevents the drum and the door from being crushed. By preventing the carriage from leaving the drum, damage and noise of the laundry cloth can be effectively prevented.

Claims (4)

The outer shell and the drum are sequentially disposed inside the case, and the door side is hingedly coupled to the case side, and the diaphragm absorbs the vibration of the outer shell and seals between the outer shell and the case at the same time. In the drum washing machine disposed in close contact with each end of the case, An inner end portion of the diaphragm is provided with a latching jaw portion is formed so that the laundry cloth does not escape to the outside of the drum laundry laundry separation prevention device of the drum washing machine. The method of claim 1, The locking jaw portion of the laundry washing machine of the drum washing machine, characterized in that formed over the entire circumference to protrude in a predetermined length along the inner peripheral surface of the end portion of the diaphragm. The method of claim 1, The protrusion of the door is inclined, the overall washing machine of the drum washing machine, characterized in that the lower side protrudes inward more than the upper side. In the operation method of the drum washing machine to rotate the drum when dewatering, After the initial stroke, which initially rotates the drum at a low speed for a predetermined time, After performing the intermediate stroke of repeating the operation of raising the predetermined rotation speed and then lowering the rotation speed of the initial stroke a predetermined time, Operation of a drum washing machine, characterized in that to perform the main dehydration stroke to perform a full-scale dehydration by raising the rotational speed of the drum.