KR101552831B1 - Control method of washing machine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washing machine control method, and more particularly, to a washing machine that performs cylinder washing in different patterns according to the number of times of use of the washing machine during a cylinder washing operation. To this end, the present invention checks the number of times of use of the washing machine during the flushing, compares the designated number with the large and small, and performs the flushing of different patterns according to the size.

Description

[0001] CONTROL METHOD OF WASHING MACHINE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washing machine control method, and more particularly, to a washing machine that performs cylinder washing in different patterns according to the number of times the washing machine is used.

If the washing machine is repeatedly used for a long time, bacteria and fungi may live in the inside of the water tank, and the contamination inside the water tank may cause harm to the human body by causing odor, .

In order to solve such a problem, conventionally, a method of supplying water into a water tank of a washing machine, heating the supplied water to a sterilization set temperature, and rotating the drum to sterilize and wash the drum was used. The term "drum" as used herein means a drum and a water tank inside the washing machine.

However, the conventional tub cleaning method has a problem that the tub cleaning is performed in the same pattern irrespective of the degree of contamination of the tub or the number of times of use of the washing machine, thereby performing the tub cleaning that does not meet the environmental conditions of the washing machine.

In addition, since the user can not manually select the pattern of the washing course, it has caused considerable inconvenience in terms of actual use conditions.

SUMMARY OF THE INVENTION An object of the present invention is to perform an efficient flushing by changing the flushing pattern according to the number of times of use of the washing machine.

Another object of the present invention is to allow a user to manually select a pattern of a channel cleaning course, thereby facilitating the user's convenience, and performing the cylinder cleaning with the most effective energy loss minimized.

The present invention relates to a washing machine, And performing the cylinder washing with another stroke according to the number of times of use of the washing machine identified in the checking step.

If the number of times of use of the washing machine identified in the confirming step is equal to or greater than the designated number, the sanitizing and rinsing steps are preferably performed.

And when the number of times of use of the washing machine identified in the checking step is less than the designated number of times, the washing with the rinsing cycle is preferably performed.

And a notification function is performed when the number of times of use of the washing machine identified in the checking step is more than the designated number.

The method of claim 1, further comprising: determining whether or not a cylinder cleaning pattern is input when the cylinder is cleaned; and performing cylinder cleaning by a stroke based on the input pattern when it is determined that the cylinder cleaning pattern is input, , It is preferable that it is determined by a medicine.

According to the present invention, it is possible to perform the cylinder washing with different pattern strokes according to the number of times of use of the washing machine

It is possible to carry out the cleaning with a small energy consumption while being effective.

In addition, the present invention allows a user to manually select a cylinder cleaning pattern, thereby enhancing convenience and performing cylinder cleaning according to the user's environmental conditions.

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

1 is a sectional view of a washing machine according to an embodiment of the present invention.

1, a washing machine according to an embodiment of the present invention includes a drum-type water tank 11 installed inside the body 10 for fresh water of washing water, And a rotary drum 12 rotatably installed in the drum.

A motor 15 is installed outside the rear portion 11c of the water tub 11 as a driving device for rotating the rotary shaft 13 connected to the rotary drum 12 so as to perform washing, rinsing and dewatering operations,

A heater 16 for heating the wash water supplied into the water tub 11 is installed in the lower part of the water tub 11.

A drainage pipe 19a for draining the water inside the water tank 11 is provided in the lower part of the water tank 11 and a drain valve 19b for controlling drainage to the outside, A drainage device 19 including a drainage pump 19c is installed.

On the inner surface of the water tub 11, a temperature sensor 23 is provided to measure the temperature of the washing water and the temperature of the water tub 11.

The temperature sensor 23 measures the temperature of the washing water when the water inside the water tub 11 contacts the temperature sensor 23 by the rotation of the drum and when the water in the water tub 11 does not come into contact with the temperature sensor, (11) itself.

A detergent supply device 18 for supplying detergent to the water tank 11 and a water supply pipe 21 for supplying water to the water tank 11 and water supply pipe 21 for controlling water supply of the water supply pipe 21 A water supply device 20 having a water supply valve 22 is installed.

The inlet 12b of the rotary drum 12 and the inlet 11b of the water tub 11 are connected to the front surface of the main body 10 in such a manner that laundry can be inserted into the rotary drum 12, And a door 17 for opening and closing the inlet 12b is installed in the inlet 17b.

At the top of the front portion of the main body 10, a control panel 24 is provided for inputting a washing stroke, a rinsing stroke, a dewatering stroke or the like, or for inputting a specific course such as a washing course.

Reference numeral 29 denotes a water level sensing mechanism for sensing the water level of water supplied to the water tank 11 and includes a water level sensing device 25 connected to one side of the water drainage device 19, And an air chamber 26 filled with air whose pressure acts in accordance with the water level of the water coming from the water level sensing device 25 and a water level detecting tube 27 connected at the lower end to one side of the air chamber 26 And a water level sensor 28 connected to an upper end of the water level sensing tube 27 to sense the air pressure in the water level sensing tube 27 and sense the water level. The water level sensor 28 measures the level of water filled in the water tank 11 during the passage cleaning and transmits the information to the control unit 41.

2 is a front view of the control panel shown in Fig.

The control panel 24 is provided with a power button 32 for inputting power, various stroke buttons 31 for inputting washing, rinsing, dehydrating, water temperature, drying and cylinder washing, An operation / stop button 33 for operating the washing machine, and a display 34 for displaying various operation information of the washing machine.

The cylinder button 31 is provided with a cylinder cleaning button which allows the user to simply execute a cylinder cleaning command or adjust the cylinder cleaning pattern to be strong, medium or weak.

The display 34 displays the number of times of use of the washing machine,

(For example, 20 times), the warning lamp 35 is turned on to notify that the flushing is necessary.

FIG. 3 is a control block diagram of the washing machine shown in FIG. 1. FIG.

The control panel 24 transmits the information to the control unit 41 when the user inputs the passage cleaning course. The user can merely perform the cylinder cleaning command or manually adjust the cylinder cleaning pattern in the cylinder cleaning command.

The temperature sensor 23 measures the washing water injected into the water tub 11 and the temperature of the water tub 11 and transmits the information to the control unit 41. The water level sensor 28 detects the water level inside the water tub 11 And transmits the information to the control unit 41. [0050] Further, the water supply valve 22 regulates the supply of water in accordance with the administrative step of the passage cleaning, and the drain pump 19c discharges the water inside the water tank 11 to the outside in the drainage step. The washing heater 16 raises the washing water supplied to the inside of the water tub 11 and the temperature of the water tub 11 and the motor 15 rotates the drum 12 to circulate the water inside the water tub 11 . The control unit 41 controls the water supply valve 22, the water supply valve 22, and the water supply valve 22 according to the information input by the control panel 24, the temperature information measured by the temperature sensor 23, The drain pump 19c, the washing heater 16, and the motor 15 to perform the flushing.

4 is a flowchart illustrating a method of controlling the washing machine shown in FIG.

As shown in Fig. 4, when the user issues an instruction to execute the passage cleaning course (s10), the control unit 41 confirms the number of times the washing machine is used (s11). The control unit 41 compares the number of times of use of the washing machine with the designated number of times (for example, 20 times) (s12). If the number of times of use of the washing machine is more than the designated number, (s14). However, when the number of times of use of the identified washing machine is less than the specified number of times, the second washing cycle (s15) is performed to wash the cylinder.

After completion of the first rinsing cycle (s14) or the second rinsing cycle (s15), the drainage process (s16) is performed to complete the washing process.

The detailed process of the sterilization step s13 and the first rinsing step s14 will be described in detail with reference to Fig. 5, and the second rinsing step s15 will be described later.

On the other hand, the controller 41 counts the number of times the laundry is used each time the washing machine is washed, performs the flushing in the sterilization stroke (s13) and the first rinsing stroke (s14) When performing the cylinder cleaning including the sterilization stroke by the manual button operation, the number of times of use of the washing machine is reset to '0' in the memory (not shown) and then counted again.

 Fig. 5 is a flowchart showing a process of the sterilization stroke s13 and the first rinsing stroke s14 shown in Fig.

When the sterilizing stroke s13 is started, water is supplied so that the wash water can sufficiently wet the uppermost portion of the water tub 11 when the drum 12 rotates (s20). The supplied washing water is heated to a sterilization set temperature (60 ° C.) at which microorganisms can be sterilized, and the stirring of the drum 12 is simultaneously performed so that the water in the tub and the washing water can be heated quickly (s21). When the temperature of the washing water reaches the disinfection set temperature, the temperature sensor 23 determines that the temperature of the washing water has reached the disinfection set temperature. If the temperature of the washing water reaches the disinfection set temperature, (S23). The reason why the temperature of the washing water is maintained is that the temperature of the water tank itself is conducted by the heat of the washing water to reach the sterilization set temperature.

It is determined whether the temperature of the water tank 11 itself has reached the sterilization set temperature (s24). When the temperature of the water tank 11 itself reaches the sterilization set temperature, the heater 16 is turned on / The temperature of the drum 12 is maintained for 20 minutes or more, and the drum 12 continues to agitate (s25) to sterilize microorganisms in the tank and the drum. After a predetermined time for sterilization (s26), the sterilization stroke (s13) is ended and the first rinsing cycle (s14) is started.

When the first rinsing cycle is initiated, replenishing water is injected into the water tub 11 (s27). When all of the replenishment water is injected, the drum 12 rinses the sterilized microorganisms and organic matter by performing a rinse cycle by high-speed rotation of 180 rpm or more (s28).

It goes without saying that the target sterilization temperature and the temperature holding time can be changed by the algorithm set in the control unit at the time of production.

On the other hand, the cylinder washing by the second rinsing step s15 in Fig. 4 differs in the amount of water injected in comparison with the cylinder washing by the first rinsing step s14, and the other processes are the same. That is, in the second rinsing cycle (s15), the amount of water injected in the first rinsing cycle (s14) and the amount of water supplied in the sterilizing stroke (s13)

6 is a flowchart illustrating a process of controlling the washing machine according to the second embodiment of the present invention

When the cylinder washing execution command is issued (s30), the control section 41 checks whether the user has input the cylinder washing pattern (s31). If it is determined that the user has input the cylinder washing pattern, the controller 41 performs cylinder washing of the washing machine through the stroke control based on the input pattern (s32). The user-selectable cylinder washing pattern can be divided into the steps of steel, middle, and medicines. The 'steel' step is performed by performing a sterilization stroke with wash water at a high temperature of 60 ° C to 90 ° C and a rinsing stroke , The 'middle' step is a step of performing a sterilization stroke with wash water at a middle temperature of 60 ° C to 40 ° C and a rinsing stroke by a high speed rotation of 180 rpm or more, and the 'weak' step is a step of performing a high- The rinsing step is performed.

When the user does not input the cylinder washing pattern and the cylinder washing execution command is issued, the cylinder washing is performed in the same manner as shown in FIG.

1 is a perspective view of a washing machine according to a first embodiment of the present invention.

2 is a front view of the control panel shown in Fig. 1

3 is a control block diagram of the washing machine shown in Fig. 1

FIG. 4 is a flowchart showing the washing process of the washing machine shown in FIG. 1

FIG. 5 is a flowchart showing a sterilization stroke and a first rinsing stroke of the washing machine shown in FIG.

6 is a flowchart illustrating a washing process of the washing machine according to the second embodiment of the present invention.

Description of the Related Art [0002]

23: Temperature sensor 31: Operation button

34: Display

Claims (9)

delete delete delete delete Determining whether or not the container cleaning pattern is input when the container is cleaned; If it is determined that the cylinder cleaning pattern is input, performing cylinder cleaning by a stroke based on the input pattern; And If the controller determines that the cylinder cleaning pattern is not input, performs cylinder cleaning by at least one of a sterilization stroke and a rinsing stroke in accordance with the number of times the washing machine is used. And a control unit for controlling the washing machine. 6. The method of claim 5, Wherein the passage cleaning pattern is determined to be one of a steel, a medium, and a weak stage. 6. The method of claim 5, Wherein when the number of times of use of the washing machine is more than a designated number of times, the washing of the washing machine is performed by the sterilization and rinsing steps. 6. The method of claim 5, Wherein when the number of times of use of the washing machine is less than a designated number of times, the washing of the washing machine is performed by a rinsing cycle. 6. The method of claim 5, Wherein the notification function is performed when the number of times of use of the washing machine is more than the designated number of times.

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