KR100315812B1 - A washing method for drum washer &washing method by the clothes amount - Google Patents

Abstract

The present invention relates to a washing method of a drum washing machine and a washing method according to the quantity thereof,

The laundry can be improved regardless of the amount of the laundry by increasing the flow of the laundry by adding the form of squeezing by the centrifugal force in addition to the form of sucking the laundry in the drum through the drop by gravity as in the past. According to the amount of the laundry according to the amount of laundry can be selected to perform the washing stroke to improve the energy efficiency through the saving of washing time and water, as well as to wash more laundry than conventional It can provide the effect.

Description

A washing method for drum washer & washing method by the clothes amount}

The present invention relates to a washing method of a drum washing machine and a washing method according to the quantity thereof, and in particular, the washing performance can be improved while increasing the amount of laundry with the same capacity drum, and energy efficiency can be improved by water conservation. It relates to a washing method of the drum washing machine and the washing method according to the quantity thereof.

In general, a drum washing machine is a washing machine in which a plurality of small perforated drums are rotated with a horizontal axis as a point, and the laundry is lifted by the lift inside the drum and dropped on the water surface.

The structure of the drum washing machine is configured as shown in Figure 1, the door (2) for putting the laundry in and out of one side of the outer case (1); A tub 3 and a drum 4 on which laundry is filled inside the door 2 to perform washing; A water supply valve 5 and a water supply hose 6 for supplying water into the drum when power is applied to the system; A detergent container 7 connected to the water supply hose 6 and supplying detergent to the drum 4; A water supply bellows (8) installed between the detergent container (7) and the tub (3) to allow the detergent to enter the drum (4) and perform expansion joints for vibration prevention; Water level sensor for detecting the water level through the water pressure to determine whether the water supplied to the drum (4) through the water supply valve (5), water supply hose (6), detergent container (7), water supply bellows ( 9); A water level sensor hose (10) for transmitting the water pressure in the drum (4) to the water level sensor (9); A motor 11 for driving the drum 4 when the water supply stop is determined through the water level sensor 9; A belt (12) and a pulley (13) for washing by interlocking with the motor (11) so that forward or reverse rotation of the drum (4) is performed; A draining bellows 14 through which water inside the drum 4 is discharged when washing is completed; A drain pump 15 for pumping up the water delivered through the drain bellows 14; A drain hose 16 for discharging the water pumped by the drain pump 15 to the outside; The gasket 17 is installed between the door 2 and the tub 3 to prevent leakage of water.

In particular, the lift (4 ') is installed in the drum (4) so that the laundry is pulled up to reach a certain height and the laundry can be dropped by gravity.

In the conventional washing method using the drum washing machine configured as described above, the user opens the door 2, inserts the laundry into the drum 4 properly, closes the door 2, and is installed in the out case 1. When the washing course is selected through (not shown) and the start button (not shown) is pressed, water enters the water supply valve 5 through a hose outside the washing machine connected to the faucet.

Then, the detergent enters into the drum 4 together with the water into the water supply hose 6, the detergent container 7, and the water supply bellows 8 through the water supply valve 5, and the inside of the drum 4 is fixed. When the water is filled up to the height, the water pressure inside the tub 3 is transmitted to the water level sensor 9 through the drain bellows 14 and the water level sensor hose 10 connected to the tub 3 to stop the water supply. Valve 5 power off).

In the above, when the water supply is stopped, the motor 11 is driven to perform the washing stroke while the drum 4 rotates forward or reverse through the belt 12 and the pulley 13 interlocked with the motor 11. Will be.

Here, referring to FIG. 3, if a proper amount of laundry W1 is placed on the bottom of the drum 4 as shown in (a), while the drum 4 rotates, the laundry W1 is lifted by the lift 4 'as shown in (b). Dragged up to reach a certain height. Then, as shown in (c) and (d) of FIG. 3, the laundry W1 falls to the bottom of the drum 4 by gravity at a predetermined height, so that mechanical washing by dropping the laundry W1 is performed. Repeatedly repeating the processes of (a) to (d) of FIG. 3 to complete the laundry release, and when the drum 4 is completely stopped, the laundry W1 is positioned at the bottom of the drum 4.

At this time, the drum 4 has a constant drum rotation speed (A rpm), when the laundry (W1) reaches a certain height has a speed enough to fall by gravity.

The washing stroke made in this way is applied to most drum washing machines, the drum drive cycle of which is shown in FIG.

That is, the drum drive cycle is one cycle in which the drum 4 is stopped for a predetermined time after the forward (reverse) rotation at a constant time A speed. In the next cycle, the drum 4 is reversed (constant) at a constant time A speed. After direction rotation, it stops for a certain time again.

In FIG. 4, the sections T12 and T22 are drum rotation acceleration sections for reaching up to speed A, and T13 and T23 are sections for maintaining A speed after reaching up to speed A, and T14 and T24 are sections for slowing down the drum 4. . And T11 and T21 represent the drum 4 stop period for a fixed time.

When the above washing cycle is completed by one cycle, the turbid water at the time of washing is pumped through the drain bellows 14 and the drain pump 15 to be discharged to the outside by the drain hose 16. .

However, in the conventional case, when the laundry W1 is a small amount as shown in FIG. 3, the laundry W1 is effective when the laundry W2 is contained in a large amount in the drum 4.

FIG. 5 illustrates the above problem, but the same washing stroke as in FIG. 3 is performed, but the laundry W2 is pulled up by the lift 4 'and then the laundry W2 does not flow at all. Mechanical washing with the same effect as tapping the laundry W2 while falling at this constant height is impossible.

Therefore, when the laundry 4 has a large amount of the laundry W2 in the drum 4, there is little mechanical washing effect, and since only washing with detergent is performed, a problem occurs that the washing performance is lowered. In addition, in order to increase the washing performance, the washing time should be increased to allow more washing with detergent, and the amount of water used for washing should be increased in order to increase the washing effect of the detergent. There is also a problem of increased consumption.

The present invention has been made to solve the above-mentioned problems of the prior art, the object is to wash the laundry in the drum by dropping by the gravity drop in the same manner as the conventional laundry by adding a squeezing form by centrifugal force The washing performance can be improved regardless of the amount of laundry by increasing the flow of the laundry, and in some cases, the washing process can be performed by selecting the washing type according to the amount of laundry, thereby improving energy efficiency through saving washing time and water. Not only can provide a washing method of the drum washing machine that can be washed in a larger amount of laundry than the conventional drum of the same size and the laundry method according to the amount of the laundry.

1 is a side cross-sectional view showing the internal structure of a general drum washing machine,

2 is a plan view of the drum washing machine viewed from the direction 'A' of FIG.

3 is a view illustrating a washing method of a drum washing machine according to the prior art in order;

4 is a graph showing the drum drive cycle of the washing machine according to the prior art,

5 is a view illustrating a washing method when a large amount of laundry is filled in a drum washing machine according to the prior art;

6 is a flowchart illustrating a washing method of a drum washing machine according to the present invention;

7 is a flow chart illustrating a washing method according to the amount of drum washing machine according to the present invention,

8 is a view showing the inside of the drum in the washing order in the case of a small amount of laundry in the washing method of the drum washing machine according to the present invention,

9 is a view showing the inside of the drum in the washing order in the case of a large amount of laundry in the washing method of the drum washing machine according to the present invention,

10 is a graph showing a drum drive cycle by the washing method of the drum washing machine according to the present invention.

<Explanation of symbols on main parts of the drawings>

50: drum 51: lift

W1: small amount of laundry W2: large amount of laundry

According to a first aspect of the washing method of the drum washing machine according to the present invention for solving the above problems and the washing method according to the amount of the laundry, by accelerating to a constant drum rotation speed so that the laundry rotates evenly on the inner wall of the drum in all directions A first step of performing a washing operation by rotating centrifugal force; A second process of continuously maintaining the drum rotation speed to maintain a form in which laundry is completely attached to the inner wall of the drum through the first process; A third step of washing the laundry by falling in the direction of gravity by gradually decreasing the drum rotation speed after the second step is continued for a predetermined time; A fourth process of maintaining laundry in a state in which laundry is separated from the bottom of the drum when the drum is completely stopped through the third process; And a fifth process of repeating the washing operation in the system a plurality of times in a direction opposite to the drum rotation direction in the first to fourth processes to complete the washing operation.

In addition, according to the second aspect of the present invention, the drum rotational speed is such that the laundry does not fall to the drum bottom by gravity at a certain height of the drum and has a speed at which centrifugal force greater than gravity can occur.

On the other hand, according to a third aspect of the present invention, when the washing stroke is carried out a first step of detecting the amount of the drum and determining whether the detection result is less than a predetermined amount set by the system;

When the determination result of the first process is 'no', it is determined that the laundry in the current drum is a large amount, and the washing and gravity squeezed by the rotating centrifugal force by performing the forward or reverse rotation a plurality of times at the first drum rotation speed for a predetermined time. A second step of simultaneously performing a laundry sucking by the;

When the determination result of the first process is YES, it is determined that a small amount of laundry is present in the drum, and one of the first drum rotation speed and the second drum rotation speed capable of performing only washing by gravity is selected. A third process of performing a laundry operation;

And a fourth process of terminating the washing operation after performing the washing operation for the washing operation time already set in the system according to the quantity detected in the first process.

According to a fourth aspect of the present invention, the first drum rotational speed is such that the laundry does not fall to the bottom of the drum by gravity at a certain height while the laundry adheres to the drum wall by the centrifugal force during drum rotation. The second drum rotational speed is such that the laundry can fall by gravity during drum rotation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

6 is a flowchart illustrating a washing method of a drum washing machine according to the present invention, and FIG. 7 is a flowchart illustrating a washing method according to the quantity of the drum washing machine according to the present invention. In addition, Figure 8 is a view showing the inside of the drum in the washing order in the case of a small amount of laundry in the washing method of the drum washing machine according to the present invention, Figure 9 is a large amount of laundry in the washing method of the drum washing machine according to the present invention. In the case, the drum is shown in the washing order, Figure 10 is a graph showing a drum driving cycle by the washing method of the drum washing machine according to the present invention.

First, referring to FIG. 6, in the washing method of the drum washing machine, when the laundry is filled in the drum in the first step, the laundry is positioned at the bottom of the drum, and in the second step, the drum rotation speed is higher than gravity regardless of the amount of laundry. The drum is rotated in the forward or reverse direction by accelerating to the B speed to have a large drum rotation centrifugal force so that the laundry is pulled upward by the lift (see S1 and S2).

Here, the B speed is a drum rotation speed such that laundry can be carried out with the same effect as centrifugal force squeezing by the centrifugal force as the laundry is pulled up by the lift and the centrifugal force greater than gravity acts on the drum wall. it means.

Thereafter, in the third step, when the drum maintains the B speed for a predetermined time through the second step (S2), the laundry is uniformly adhered to the wall of the drum, and washing is performed by squeezing the laundry. In the fourth step, after the washing operation of the third step S3 is continued for a predetermined time, the drum is gradually decelerated at the B speed to stop the drum, and the drum is stopped for a predetermined time in the fifth step. See S5)

In this case, when the drum is stopped through the fourth and fifth steps S4 and S5, the laundry is positioned at the bottom of the drum as in the first step S1. At this time, the laundry falls to the bottom of the drum, as in the conventional fall washing, that is, the washing operation of the function of knocking is made.

In the sixth step, the system determines whether the washing time initially determined is completed (see S6). In this case, if the determination result of the sixth step S6 is YES, all the washing strokes are completed and the next stroke is completed. When the determination result of the sixth step S6 is no, the system returns to the second step S2 to accelerate the drum to the B speed in order to continue the washing operation by a predetermined number of washings in the system. The drum is rotated in the opposite direction to the second step S2. Then, the process returns to the third step S3 to perform the washing in the same manner as squeezing the laundry, and then reaches the sixth step S6 to determine whether the washing is completed again.

When the washing operation is performed in this manner, even if the laundry is put into the drum at its maximum capacity, the laundry is stuck to the four sides of the drum wall by the drum centrifugal force greater than gravity, so that a space is formed at the center of the drum. Absorbing water is forced out of the hole in the drum wall and collected at the bottom of the drum.

Therefore, the washing performance is improved because the water level inside the drum is relatively increased, and the laundry can be expected to be washed by centrifugal force while the drum is rotated, and at the same time the laundry is stopped for a certain time. As it falls to the bottom of the drum, you get the same washing effect as tapping and sucking.

Next, referring to FIGS. 7 to 9, the washing method according to the amount of laundry is as follows.

In the first process, when washing is started, the amount of laundry is detected by comparing the set amount set in the system with the amount of laundry (W1, W2) currently put in, and in the second process, the amount of laundry detected in the first process (S11) is detected. It is determined whether the amount of the laundry (W1, W2) is a small amount (see S11 and S12).

First, the drum rotation speed such that the laundry (W1, W2) is pulled up by the lift 51, and the laundry falls back to the bottom of the drum 50 by gravity at a certain height to perform the drop washing is called A speed. As the laundry (W1, W2) is pulled up by the lift 51, centrifugal force greater than gravity acts so that the laundry (W1, W2) sticks evenly to the wall of the drum (50) so that washing by centrifugal force can be performed. The drum rotation speed is called B speed.

Next, when the determination result of the second process (S12) is YES, in the third process, one of the A speed and the B speed is selected, and the drum 50 is set at a predetermined time using the selected drum rotation speed. Reverse operation is performed by rotating operation (see S13).

When the washing operation through the forward (reverse) rotation of the drum 50 is completed through the third process (S13), the drum 50 is stopped for a predetermined time in the fourth process (see S14). In the reverse (forward) rotation operation of the drum 50 in a direction opposite to the third process (S13), the washing operation is performed at the drum rotation speed selected in the third process (S13). )

When the fifth process S15 is completed, the drum 50 is stopped for a predetermined time in the sixth process, and in the seventh process, it is determined whether the washing time reaches the set time set by the system (see S16 and S17). )

If the determination result of the seventh step (S17) is "Yes", the washing process is terminated and proceeds to the next stroke, but if the determination result of the seventh step (S17) is "No", the third step ( Returning to S13), the washing operation is repeatedly performed.

That is, as shown in FIG. 8, when the user determines the drum rotation speed as the B speed, a small amount of laundry W1 is initially located at the bottom of the drum 50 as in (a), and the drum 50 rotates. As in (b), the small amount of laundry W1 is pulled upward by the lift 51. Then, if the drum rotational speed is maintained at the B speed, as shown in (c), (d), and (e), the small amount of the laundry W1 reaches a predetermined height and does not fall down after reaching the predetermined height on the wall of the drum 50. Stick to and rotate with the drum (50).

When the drum rotation speed is gradually reduced as shown in FIG. 8 (f), the small amount of laundry W1 falls to the bottom of the drum 50 by gravity, and when the drum 50 is completely stopped as shown in (g), the small amount of laundry W1 ) Is located at the bottom of the drum (50).

However, when the user determines the drum rotation speed as the A speed in the third process S13, the same washing operation as before is performed.

On the other hand, if the determination result of the second process (S12) is no, that is, if the laundry is a large amount of the eighth process in the eighth process to perform the forward (reverse) rotation operation of the drum 50 at B speed In the ninth process, when the eighth process (S18) is completed, the drum 50 is stopped for a predetermined time (see S18 and S19).

Then, unlike the conventional operation, such as squeezing and squeezing on the maximum capacity of the laundry at the same time can be exerted at the same time washing performance can be improved significantly.

In the tenth and eleventh processes, after the predetermined time has elapsed, the drum 50 is driven again at the speed B. After the reverse rotation operation is performed in the opposite direction to the eighth process S18, the drum 50 is operated. It stops for a certain time (see S20 and S21).

When the tenth and eleventh processes S20 and S21 are completed, the process proceeds to the seventh process S17 to determine whether the washing time reaches the set time, and when the determination result is YES, the washing process is performed. After the completion of the process, the process proceeds to the next stroke, but if the determination result is no, the process returns to the eighth process S18 and repeats the washing operation.

That is, as shown in Figure 9 (a) the bulk laundry (W2) is filled in the drum 50 is full, and in (b) if the drum rotation speed is gradually accelerated by the mass of the laundry (lift 51) As W2) is pulled up, the mass laundry W2 tries to stick to the wall of the drum 50 by the accelerated centrifugal force. Thereafter, when the drum 50 reaches the speed B as in (c), the mass laundry W2 is rotated while keeping the state evenly attached to the wall evenly in the circumferential direction of the drum 50.

When the drum 50 starts to stop as shown in (d) of FIG. 9, the bulk laundry W2 falls to the bottom of the drum 50 by gravity, and after the drum 50 is completely stopped as shown in (e), the bulk laundry W2 is positioned at the bottom of the drum 50. When the drum 50 is rotated in the opposite direction to the initial rotation direction, the operation as shown in FIGS. 9A to 9E is repeated.

In this case, the same reference numerals as those in FIG. 8 are used in FIG. 9.

As shown in FIG. 10, the drum drive cycle of the present invention in which the washing operation is performed as described above has a forward drive section T1 of the drum 50 and a reverse drive section T2 of the drum 50. The system repeats for a predetermined washing time, wherein the forward drive section T1 of the drum 50 is an acceleration step T11 for rotating the drum 50 at A speed or B speed, and the drum 50 A or B. Operation step (T12) to perform the washing operation while maintaining the speed, deceleration step (T13) to gradually reduce the speed to stop the drum 50, the drum stop step (T14).

Similarly, the reverse driving section T2 of the drum 50 also includes an acceleration stage T21, an operation stage T22, a deceleration stage T23, and a stop stage T24, but the drum rotation speed is determined by the user's selection. It is different from the conventional point, and the drum rotation speed is preferably smaller than the B speed A speed.

Washing method of the drum washing machine according to the present invention configured as described above and the washing method according to the quantity of the laundry in the drum, as in the form of sucking through the drop by the gravity, in addition to the form of squeezing by centrifugal force By increasing the flow of laundry, washing performance can be improved regardless of the amount of laundry, and in some cases, the washing process can be performed by selecting the washing type according to the amount of laundry. In addition to increasing the amount of laundry in the same size of the drum can be washed more than the existing effect.

Claims (4)

A first step of performing washing operation by rotating centrifugal force by accelerating to a constant drum rotation speed so that laundry is rotated evenly on the drum inner wall during washing; A second process of continuously maintaining the drum rotation speed to maintain a form in which laundry is completely attached to the inner wall of the drum through the first process; A third step of washing the laundry by falling in the direction of gravity by gradually decreasing the drum rotation speed after the second step is continued for a predetermined time; A fourth process of maintaining laundry in a state in which laundry is separated from the bottom of the drum when the drum is completely stopped through the third process; Washing method of a drum washing machine comprising a fifth process of completing the washing operation by repeating a plurality of times by a predetermined washing time in the system in the direction opposite to the drum rotation direction in the first to fourth process. The method of claim 1, The drum rotation speed is a laundry washing method of a drum washing machine, characterized in that the laundry does not fall to the drum bottom by gravity at a certain height of the drum has a speed that can cause centrifugal force greater than gravity. A first step of detecting a quantity of the drum in the washing stroke to determine whether the detection result is equal to or less than a predetermined amount set by the system; When the determination result of the first process is 'no', it is determined that the laundry in the current drum is a large amount, and the washing and gravity squeezed by the rotating centrifugal force by performing the forward or reverse rotation a plurality of times at the first drum rotation speed for a predetermined time. A second step of simultaneously performing a laundry sucking by the; When the determination result of the first process is YES, it is determined that a small amount of laundry is present in the drum, and one of the first drum rotation speed and the second drum rotation speed capable of performing only washing by gravity is selected. A third process of performing a laundry operation; And a fourth process of terminating the washing operation after performing the washing operation for the washing operation time already set in the system according to the quantity detected in the first step. The method of claim 3, wherein The first drum rotational speed is such that the laundry is attached to the drum wall by the centrifugal force when the drum rotates so as not to fall to the bottom of the drum by gravity at a certain height, the second drum rotational speed during the drum rotation Washing method according to the quantity of drum washing machine, characterized in that the laundry made at a speed that can fall by gravity.