KR100197688B1 - Cleaning control method of a washing machine - Google Patents

Abstract

The present invention relates to a washing control method for a washing machine, which comprises a first conductivity value detecting step for detecting a conductivity value X of washing water that has been initially supplied, a second conductivity value detecting step for detecting a conductivity value A in the washing cycle, A first elongating step heel for elongating and resetting a predetermined washing time period when the difference AX between the conductivity value X and the conductivity value A is smaller than a predetermined value; And a second extension step of extending and resetting the set time of the washing cycle when the difference BA between the conductivity value A and the conductivity value B is smaller than a predetermined value, The washing time can be optimally controlled according to the degree of contamination, so that the washing performance can be improved.

Description

Washing control method of washing machine

FIG. 1 is a schematic structural view of a general washing machine to which the present invention is applied; FIG.

FIG. 2 is a view for explaining an installation position of a conductivity sensor provided for carrying out the present invention; FIG.

Figure 3 is a schematic block diagram of hardware for carrying out the present invention;

4 is a detailed circuit diagram of FIG. 3;

FIG. 5 is a flow chart for explaining a washing control method of a washing machine according to a preferred embodiment of the present invention. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

10: DC power supply means 20: Driving operation means

30: Control means 40: Quantity sensing means

50: Water supply valve drive means 60: Conductivity sensing means

70: water level sensing means 80: motor drive means

81: Washing motor 90: Drain valve driving means

100: display means

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washing control method for a washing machine, and more particularly, to a washing control method for controlling an optimum washing time and a strength of a water flow using a conductivity sensor capable of detecting the use, And more particularly, to a washing control method of the washing machine.

Generally, as shown in FIG. 1, a fully automatic washing machine is provided with an outer tub 5, a washing tub 4, and an amount of water suitable for washing in accordance with the amount of laundry introduced into the washing tub 4, A water level sensor for sensing the amount of the washing water flowing into the washing tub 4 through the water supply valve 51 and a water level sensor for detecting the amount of washing water flowing into the washing tub 4 by a constant water level sensor A temperature sensor installed in the washing tub 4 to sense the water temperature in the washing tub 4 after washing for a predetermined period of time and a temperature sensor for detecting the water temperature in the washing tub 4 when the water level is above a certain level, And a drain valve 91 for draining the water in the washing tub 4 through the drain hole 91a.

Since the conventional washing control method of the washing machine constructed as described above simply performs the washing operation for a preset washing time during the washing operation, it is impossible to control the degree of washing due to the degree of contamination of the laundry and the condition of the detergent, There is a problem that it can not be done.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a washing control method of a washing machine capable of optimally controlling a washing time by using a conductivity sensor capable of detecting the use, The purpose is to provide.

According to another aspect of the present invention, there is provided a method of controlling washing of a washing machine, the method comprising: a first conductivity value detecting step of detecting a conductivity value X of washing water supplied at an initial stage; A second elongation step of elongating and resetting a preset washing time when the difference AX between the conductivity value X and the conductivity value A is smaller than a predetermined value; And a second elongating step of elongating and resetting the time of the set washing cycle when the difference BA between the conductivity value A and the conductivity value B is smaller than a predetermined value .

According to the present invention configured as described above, the washing time can be optimally controlled by using a conductivity sensor capable of detecting the use of the detergent, the amount of the detergent, and the degree of contamination.

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

FIG. 3 is a schematic block diagram of hardware for carrying out the present invention. FIG. 3 is a schematic block diagram of a power supply required for driving the control means 30, Numeral 30 denotes a control means, numeral 40 denotes a quantity detecting means for detecting the amount of laundry introduced into the washing tub 2, numeral 50 denotes a water supply valve driving means, numeral 60 denotes a washing means Reference numeral 80 denotes a motor driving means. Reference numeral 81 denotes a motor. The reference numeral 80 denotes a motor driving means. The reference numeral 80 denotes a motor driving means. Reference numeral 100 denotes a display means for externally displaying laundry conditions such as a type of laundry, a washing time, and the like, which are input to the control means 30, and various conditions occurring during the washing process And there.

FIG. 4 is a detailed circuit diagram of FIG. 3, wherein reference numeral 10 denotes a direct current power supply means, 20 denotes a driving operation means, 30 denotes a control means, 40 denotes a surplus amount detection means, 50 denotes a water supply valve drive means, A reference numeral 70 denotes a level detecting means, 80 a motor driving means, 81 a washing motor, 90 a drain valve driving means, and 100 a display means.

FIG. 5 is a flow chart for explaining a washing control method of a washing machine according to a preferred embodiment of the present invention. First, using the control means 30 for sensing, storing, and controlling all driving means and sensing means of the washing machine, (S1) for detecting a primary weight from a volume detecting means (40) and a water level detecting means (70) to set a reset water level, and a control means A second step S2 of detecting a secondary weight from the water level detecting means 70 and setting a set water level, detecting and recording the water temperature of the water after the set water level is detected in the second step S2, A third step S3 of detecting the elapsed time of the washing operation of the motor 81 for four minutes and a step S3 of detecting the conductivity value A from the conductivity detecting means 60 during the four minute washing operation in the third step S3, (Z) of the water supply conductivity value (X) supplied at the last rinsing last time (S4) for detecting a predetermined time from the fourth step (S4) and a fourth step (S4) for operating the set time, and detecting the conductivity value B from the conductivity detecting means 60 and the conductivity from the fourth step S4 And a fifth step S5 of detecting the difference Z1 of the value A and operating the set time.

In the first step S1, a first step (S1-1) of detecting the weight of the laundry by the bulk detecting means 40 and a second step (S1-1) of detecting the weight of the laundry are performed by the water supply valve driving means 50 (S1-2) of detecting the water level of the washing water by the water level detecting means (70), and detecting the detected water level of the washing water detected in the first-step (S1-1) If the water level is lower than the reset water level corresponding to the weight, the process returns to step 1-2 (S1-2) to perform watering, and if the water level is equal to or higher than the reset water level, -3). The second step S2 includes a second step (S2-1) of secondarily detecting the weight of the laundry by the volume detecting means 40 and a second step (S2-1) of detecting the weight of the laundry by the water- (S2-2) of detecting the level of the water supplied to the water level detecting means (70), and the detected level of the water level detected by the water level detecting means (70) If the current water level is equal to or higher than the preset water level, the water level is returned to the second-2 level (S2-2) S2-3). The third step S3 is a third step (S3-1) of detecting and storing the water temperature of the washing water to be supplied, and a third step (S3-1) of driving the washing motor by applying power to the washing motor 81, (Step S3-2), and whether or not the operation time of the washing motor 81 has exceeded 4 minutes. If the detection time is less than 4 minutes, (S3-2), the operation of the washing motor 81 is performed, and if the elapsed time of 4 minutes has elapsed, the process proceeds to the next step S4-1 (S4-1) -3).

The fourth step S4 includes a fourth step S4-1 of detecting the amount of detergent input by the conductivity detecting means 60 and the amount of contamination away from the clothes (conductivity detection value: A) A fourth step (S4-2) of detecting a difference (Z) between the conductivity detection value (A) and the initial water supply conductivity value (X) supplied at the last time of the last rinsing, (S4-4) of driving the washing motor 81 for the set time if the difference Z is larger than the set value, and (4-2) And if the difference Z is less than the set value, the washing motor 81 is further driven for three minutes after the set time in step S4-5.

The fifth step S5 is a fifth step (S5-1) of judging whether or not it is one minute from the operation end time of the washing motor 81, and the fifth step (S5-1) 5-2 step (S5-2) of storing the conductivity sensing value B by sensing the conductivity when it is judged that it is one minute from the operation end time of the washing motor 81, (S5-3) of calculating a difference (Z1) between the conductivity detection value (B) detected in step (S4-1) and the conductivity detection value (A) (S5-4) of judging whether the difference Z1 is larger than the set value, and terminating the washing operation after the unwinding operation when the difference Z is larger than the set value; (S5-5) for further driving the washing motor 81 for 3 minutes and then terminating the washing operation after the unloading water flow.

As described above, according to the present invention, since the sensor is installed in the water in the washing tub and the amount of ions is detected, the accuracy of detection is improved, and a conductivity sensor capable of detecting the use of the detergent, So that the washing time can be controlled optimally.

Claims (2)

A washing control method for a washing machine, comprising: a first conductivity value detecting step of detecting a conductivity value X of washing water that has been supplied at an initial stage; a second conductivity value detecting step of detecting a conductivity value A in a washing cycle; A first elongating step of elongating and resetting a predetermined washing time period when the difference AX of the conductivity value A is smaller than a predetermined value and a third conductivity value detecting step of detecting the conductivity value B immediately before the end of the washing cycle And a second extension step of extending and resetting the set time of the washing cycle when the difference BA between the conductivity value A and the conductivity value B is smaller than a predetermined value. 2. The washing control method according to claim 1, wherein the conductivity value X of the wash water supplied at the first conductivity value detecting step is the conductivity value of the wash water supplied at the last rinsing.