KR19990040906A - Door control method of drum washing machine - Google Patents

Abstract

A method for controlling a door of a drum washing machine for efficiently operating a door during a washing stroke, the method of controlling a door of a drum washing machine comprising a door and a motor, wherein the door is opened according to a running stroke time when a door opening command is input during a stroke by a motor. It includes the step of determining whether or not, and the step of expressing the opening operation or error state according to the determination, within the time range that does not reduce the washing performance within that time by setting the additional laundry input time during the washing administration Since the laundry can be added to the door by opening the door to prevent the inconvenience of having to wash a small amount of laundry to be added additionally, the operation efficiency of the drum washing machine can be improved.

Description

Door control method of drum washing machine

The present invention relates to a drum washing machine, and more particularly, to a door control method of a drum washing machine for operating the door efficiently during the washing operation.

Generally, a washing machine is a machine that sequentially performs washing, rinsing, dehydration, and drying operations of laundry according to a set algorithm. The washing machine is classified into a pulsator type, a stirring type, a drum type, and the like according to a washing method.

Here, the drum washing machine having the advantage of less damage to the laundry is completed, as shown in Figures 1 and 2, in order to put the laundry in the lower portion of the control panel 20 mounted on the upper front of the drum washing machine main body 10 A circular door 30 is opened and closed.

In addition, the tub 11 is fixed inside the main body 10, and the driving force of the drum driving motor 12 mounted on one side of the lower portion of the rear of the tub 11 is transmitted through the belt 13 so as to be rotatable. 14) is installed.

In addition, a plurality of lifters 15 are fixed to the inner circumferential surface of the drum 14 so that the laundry is caught so that the laundry rises to some extent during the rotation of the drum 14.

In addition, the lower side of the tub 11, one side of the pump 18, the first drain hose 16 for draining the wash water in the drum 14 when the drainage is mounted to the base plate 17 of the lower body 10 The second drain hose 19 for discharging the washing water out of the main body 10 is connected to the upper portion of the pump 18.

In addition, the control panel 20 will be described in detail with reference to FIG. 3. The control panel 20 includes a key operation unit 21 for inputting various operation commands, and a display unit 22 for displaying an operation state. Includes an operation key, a reservation key, a course selection key, an operation / pause key 23, and a door opening key 24.

Referring to the operation of the drum washing machine according to the prior art having such a configuration as follows.

First, open the door 20 in front of the main body 10 of the drum washing machine, put laundry into the drum 14, and then press the operation / pause key 23 of the control panel 20 to start washing the drum. Washing is performed by rotating the drum 14 by the driving of the motor 12.

Such a drum washing machine has a structural characteristic that the door 30 is located under the front of the main body 10, so that the washing water may be discharged to the outside when the user opens the door 30 during the washing process.

Therefore, the drum washing machine according to the related art is programmed such that the door 30 is not opened when the washing is in progress even if the user wants to open the door 30 by turning the door opening key 24 ON.

Subsequently, the door 30 is opened when a predetermined time elapses after the washing is completed and the entire stroke is completed.

The drum washing machine according to the prior art has a problem in that a small amount of laundry to be added is separately washed because the laundry is not programmed because the door is programmed so that the door is not opened while the laundry is in progress.

Accordingly, an object of the present invention is to provide a door control method of a drum washing machine for opening a door within a laundry loadable time during a laundry administration.

1 is a perspective view showing the appearance of a typical drum washing machine,

2 is an internal configuration diagram of a drum washing machine,

3 is a plan view illustrating the control panel of FIG. 1;

4 is a flow chart for performing the door control of the drum washing machine according to the present invention.

Explanation of symbols for main parts of the drawings

10: body 11: tub

12: drum drive motor 13: belt

14 drum 15 lifter

16: first drain hose 17: base plate

18: drain pump 19: second drain hose

20: control panel 21: key control panel

22: display unit 23: operation / pause key

24: door open key 30: door

The door control method of the drum washing machine according to the present invention includes the steps of determining whether the door is opened according to the progress stroke time when the door opening command is input during the stroke progress by the motor in the drum washing machine having the door and the motor. Therefore, there is a feature that comprises the step of representing the opening operation or error state of the door.

Hereinafter, a preferred embodiment of a door control method of a drum washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a flow chart for controlling the door of the drum washing machine according to the present invention.

First, the appearance and internal configuration of the drum washing machine according to the present invention for implementing the present invention are the same as those of Figs.

When the door control method of the drum washing machine according to the present invention having such a structure is described with reference to FIG. 4, the door 30 of the front of the main body 10 is opened and the laundry is put into the drum 14. The same operation of the key operation unit 21 is turned on to perform washing by driving the drum drive motor 12 (S100).

During the laundry administration, when the user turns on the operation / pause key 23 to open the door 30 for the purpose of adding laundry, the operation of the drum washing machine is suspended (S101).

Subsequently, when the user turns on the door opening key 24 of the key operating unit 21 (S102), the washing time T which is advanced and the laundry addition time Tm can be compared (S103), and the washing time T which has been advanced. ) Is larger than the additional time Tm for laundry, the error message of 'Door locked' indicating that the door 30 cannot be opened is displayed on the display unit 22 of the control panel 20 (S104). Carry out the administration continuously.

Here, the laundry additional input time (Tm) is a time in which the laundry 30 can be additionally added by opening the door 30 during the laundry administration, and is a time within a range in which washing performance is not degraded due to additionally added laundry.

On the other hand, if the advanced washing administration time (T) is a time earlier than the laundry additional input time (Tm), the current water level (S) of the drum washing machine is compared with the set constant water level (Sm) (S105).

Here, the predetermined water level Sm is a low water level such that even if the door 30 is opened, the wash water supplied is not discharged to the outside through the door 30.

If the current water level S is higher than the predetermined water level Sm in the above step S105, the drainage operation is performed through the first and second drain hoses 16 and 19 by driving the drain pump 18 (S106). ) After lowering the current water level S of the drum washing machine to a predetermined water level Sm, the door 30 is opened (S107).

Therefore, according to this process, the drum washing machine according to the present invention opens the door within the set laundry additional input time, adds additional laundry, and continues the rest of the process to complete the overall washing administration.

Additional laundry can be added by opening the door within a time range that does not decrease the laundry performance within the time by setting an additional laundry load during the laundry administration.

Therefore, the drum washing machine according to the present invention can prevent the inconvenience of having to separately wash a small amount of laundry to be added, thereby increasing the operation efficiency of the drum washing machine.

Claims (3)

In a drum washing machine having a door and a motor, Determining whether the door is opened according to the stroke time when the door opening command is input during the stroke progress by the motor; Door control method for a drum washing machine comprising the step of expressing an opening operation or an error state of the door according to the determination. The method of claim 1, The step of determining whether the door is open is a step of determining whether the running time is before the laundry can be added additional time, and if the water can be added before the additional time to determine whether the water level is below a certain level to determine whether the door is opened. Door control method of a drum washing machine, characterized in that consisting of steps. The method of claim 2, The laundry additionally available time is the door control method of the drum washing machine, characterized in that the time within the range that the washing performance is not degraded by the additional laundry in the laundry administration.