KR20040110774A - Conductive sensor sensing method of a washer - Google Patents

Abstract

PURPOSE: A detection method by an electrode sensor of a washing machine is provided to improve washing efficiency and rinsing efficiency by measuring the conductivity accurately considering the surrounding temperature of the controller. CONSTITUTION: A controller correction group is loaded in turning on the washing machine(S1), and washing and rinsing are performed by supplying detergent and water according to the washing program(S2,S3). The washing water is detected with an electrode sensor while washing and rinsing(S4), and the surrounding temperature of the controller is measured in detecting washing water by the electrode sensor(S5). The correction value of the controller is calculated according to surrounding temperature of the controller(S6). The detection value of the electrode sensor is converted into the conductivity of washing water considering the correction value of the controller(S7).

Description

Conductive sensor sensing method of a washer}

The present invention relates to a method for detecting an electrode sensor of a washing machine in which a detection value is detected in the washing water by an electrode sensor during a washing process, and the detection value of the electrode sensor is converted into a conductivity of the washing water in a controller to measure the conductivity of the washing water. In particular, since the controller is relatively affected by the ambient temperature, the present invention relates to an electrode sensor detection method of a washing machine to accurately measure the conductivity of the wash water by the controller and the electrode sensor in consideration of the ambient temperature of the controller.

1 is a side cross-sectional view showing a general washing machine.

In general, the washing machine is installed to hang inside the cabinet (2) forming the exterior as shown in Figure 1, the outer tank (4) in which the wash water is contained, and rotatably installed inside the outer tank (4) and wash water and An inner tub 6 in which laundry is contained and washed, a pulsator 8 rotatably installed on a bottom surface of the inner tub 6 to form a rotational flow in the inner tub 6, and a lower portion of the outer tub 4. It is installed to be connected to the inner tank 6 and the pulsator (8) is configured to include a motor (10) for rotating the inner tank (6) or pulsator (8).

Of course, the water supply valve assembly 12 and the detergent box assembly 14 including a water supply valve (not shown) for supplying the washing water together with the detergent to the outer tank 4 and the inner tank 6 on the cabinet 2. Is installed, the lower one side of the outer tank 4 is installed so that the drain valve assembly 16 including a drain valve (not shown) for draining the wash water of the outer tank 4 and the inner tank 6, A microcomputer (not shown) for adjusting the operation of the washing machine configured as described above is installed to be connected to each component device.

In particular, an electrode sensor 22 and a temperature sensor 24 connected to the controller are installed at one side of the outer tub 4 to measure the conductivity and temperature of the wash water supplied to the outer tub 4, respectively.

Here, the washing value is supplied to the outer tank (4) and in the state in which detergent is supplied together, the detection value of the electrode sensor (22) is converted into the conductivity of the washing water in the controller and washed by the temperature sensor (24). The temperature of the water is measured, and the amount of detergent dissolved in the wash water in the microcomputer is calculated according to the measured conductivity and temperature of the wash water, and the operation of the washing machine is controlled according to the amount of detergent dissolved in the wash water.

In this case, a detergent amount determination table is input to the microcomputer in advance so that the amount of detergent dissolved in the wash water can be calculated according to the conductivity and temperature of the wash water. The detergent amount determination table is usually measured by an electrode sensor based on a standard controller. The hardness and detergent amount are shown according to the conductivity of the wash water and the temperature of the wash water measured by the temperature sensor.

The washing program including washing intensity, washing time, rinsing time, rinsing frequency, dehydration time, etc. is determined according to the amount of detergent dissolved in the washing water calculated as described above, and then a series of washing, rinsing, and dehydration strokes is performed according to the set washing program. Since the washing is made during the washing process can improve the washing and rinsing performance.

However, the electrode sensor detection method of the washing machine according to the prior art is a program is input so that the detection value of the electrode sensor can be converted to the conductivity of the wash water in the controller installed on a standard temperature, the controller is usually composed of an electrical circuit Since the relative temperature is relatively affected by the ambient temperature, the ambient temperature should be considered in the program for converting the detected value of the electrode sensor into the conductivity of the wash water.

That is, the electrode sensor detection method of the washing machine according to the prior art can not accurately measure the conductivity of the wash water because the detection value of the electrode sensor is converted to the conductivity of the wash water in the controller without considering the ambient temperature. In addition, there is a problem in that the washing and rinsing performance is lowered since the washing is performed according to the washing program set according to the conductivity of the washing water.

The present invention has been made to solve the above problems of the prior art, washing machine so that the conductivity of the wash water can be accurately measured by converting the detected value of the electrode sensor into the conductivity of the wash water in consideration of the ambient temperature of the controller Its purpose is to provide an electrode sensor detection method.

1 is a side cross-sectional view showing a typical washing machine,

2 is a flowchart illustrating a method of detecting an electrode sensor of a washing machine according to the present invention;

3 is a temperature compensation table showing a correction value of a controller according to the controller's correction group and the controller's ambient temperature in the present invention;

4 is a diagram illustrating a temperature compensation table showing a correction value of a controller according to an ambient temperature of the controller in the present invention.

<Explanation of symbols on main parts of the drawings>

4: outer tank 6: inner tank

8: pulsator 10: motor

22: electrode sensor 24: temperature sensor

Electrode sensor detection method of the washing machine according to the present invention for solving the above problems is detected value in the wash water by the electrode sensor during the washing process, the detection value of the electrode sensor is converted into the conductivity of the wash water in the controller In the electrode sensor detection method of the washing machine to measure the conductivity of the wash water, the calibration group of the controller is set according to the detection value of the electrode sensor in the reference conditions during the inspection process, the detection of the electrode sensor in the wash water during the washing process A first step of detecting a value, a second step of detecting an ambient temperature of the controller after the detection value of the electrode sensor is detected in the first step, a calibration group of the controller set in the first step and the first step A third step of calculating a controller correction value according to the ambient temperature of the controller detected in step 2, and a correction value of the controller calculated in the third step In consideration of this, the detection value of the electrode sensor is made to include a fourth step of converting the conductivity of the wash water.

In addition, the electrode sensor detection method of the washing machine according to the present invention is detected in the wash water by the electrode sensor during the washing process, the detection value of the electrode sensor is converted into the conductivity of the wash water in the controller, the conductivity of the wash water In the electrode sensor detection method of the washing machine to be measured, the first step of detecting the detection value of the electrode sensor in the washing water during the washing process, and after the detection value of the electrode sensor is detected in the first step of the surrounding of the controller The electrode in consideration of a second step of sensing a temperature, a third step of calculating a controller correction value according to the ambient temperature of the controller detected in the second step, and a correction value of the controller calculated in the third step And a fourth step in which the detected value of the sensor is converted into the conductivity of the wash water.

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

FIG. 2 is a flowchart illustrating a method of detecting an electrode sensor of a washing machine according to the present invention, and FIG. 3 is a view illustrating a temperature compensation table showing correction values of a controller according to a correction group of a controller and ambient temperature of the controller in the present invention. 4 is a view showing a temperature compensation table showing a correction value of a controller according to the ambient temperature of the controller in the present invention.

Looking at the electrode sensor detection method of the washing machine according to the present invention with reference to Figure 2, the first step is the controller correction group is loaded when the washing machine is powered on (see S1).

Here, when the controller embedded in the washing machine is not a standard controller during the inspection process of the washing machine, the controller correction group stores the correction group of the controller determined according to the type of the controller in the microcomputer and power is supplied to the washing machine. If so, the calibration group of the controller is loaded.

At this time, the calibration group of the controller is determined by comparing the detected value of the electrode sensor with a reference value in the reference condition, the reference condition is an aqueous solution of the set concentration, the set value is detected by the electrode sensor connected to the standard controller in the reference condition Value.

That is, in the aqueous solution of the set concentration, the detection value of the electrode sensor connected to the controller is compared with the detection value of the electrode sensor connected to the standard controller to determine the correction group of the controller.

In the second step, after the controller calibration group is loaded in the first step, the washing water is supplied with the detergent according to a washing program input in advance, and washing and rinsing are performed (see S2 and S3).

Specifically, when the washing machine is operated, the water supply valve is opened so that the washing water is supplied into the outer tank 4 and the inner tank 6 together with the detergent, and when the washing water is supplied to the set water level, the pulsator 8 or the inner tank ( 6) is rotated and the washing stroke is performed.

Then, the drain valve is opened to drain the wash water in the outer tank (4) and the inner tank (6), and then the water supply valve is opened to wash water is re-supplied into the outer tank (4) and the inner tank (6), When the wash water is supplied to a predetermined level, the pulsator 8 or the inner tank 6 is rotated, and the rinsing stroke is repeatedly performed.

In the third step, the detection value of the electrode sensor 22 is detected in the washing water while the washing and rinsing of the second step is performed.

Here, when the washing stroke has elapsed, the detection value of the electrode sensor 22 is detected in the state in which detergent is sufficiently dissolved in the washing water, or the user adds the detergent to the washing water before the washing time is completed. The sensing value of the electrode sensor 22 is sensed in a state in which the washing environment is changed, such as in the case of feeding.

In addition, a detection value of the electrode sensor 22 may be detected in pure wash water before a set time before the final rinsing stroke is completed.

Specifically, the electrode sensor 22 flows a current between two electrodes installed so as to be immersed in the wash water, and a voltage value applied between the two electrodes is sensed. The detected value of the electrode sensor 22 detected as described above is Converted to conductivity in the controller.

At this time, the conductivity of the washing water and the detection value of the electrode sensor 22 is inversely proportional, and the conductivity of the washing water according to the sensing value of the electrode sensor 22 varies according to the type of the controller.

In the fourth step, the ambient temperature of the controller is sensed while the detection value of the electrode sensor 22 is detected in the third step (see S5).

At this time, the ambient temperature of the controller is sensed by a separate temperature sensor installed on one side of the controller.

In the fifth step, the correction value of the controller is calculated according to the correction group of the controller loaded in the first step and the ambient temperature of the controller detected in the fourth step (see S6).

Here, the correction value of the controller is input to the microcomputer as a temperature compensation table in advance. The temperature compensation table shows the correction value of the controller according to the correction group of the controller and the ambient temperature of the controller as shown in FIG. 3. The correction value of the controller corrects the detection value of the electrode sensor 22.

Of course, the temperature compensation table does not need to correct the detection value of the electrode sensor 22 at room temperature (15-25 ° C.), since the correction value of the controller becomes 0 regardless of the correction group of the controller.

At this time, the correction value of the controller is a positive number is set when the ambient temperature of the controller is less than room temperature to increase the detection value of the electrode sensor 22, and becomes negative when the ambient temperature of the controller exceeds room temperature The detection value of the electrode sensor 22 is reduced.

Meanwhile, the correction value of the controller may be calculated from the temperature compensation table shown in FIG. 4, wherein the temperature compensation table shows the correction value of the controller according to the ambient temperature of the controller regardless of the correction group of the controller. .

In the sixth step, the detected value of the electrode sensor is converted into the conductivity of the wash water in consideration of the correction value of the controller calculated in the fifth step.

As such, the hardness of the washing water and the amount of detergent are calculated according to the conductivity of the washing water accurately detected in consideration of the ambient temperature of the controller and the temperature of the washing water detected by the temperature sensor 24, and the hardness and The optimal washing program is set according to the amount of detergent, and washing and rinsing strokes are performed accordingly.

In the electrode sensor detection method of the washing machine according to the present invention configured as described above, the correction value of the controller is calculated in consideration of the ambient temperature of the controller during the washing process, and the detection value of the electrode sensor is determined based on the correction value of the controller. In order to be converted into the conductivity of the wash water in the conductivity of the wash water can be accurately measured in consideration of the characteristics of the controller sensitive to the ambient temperature, the hardness and detergent amount of the wash water according to the conductivity of the wash water is accurately calculated, Accordingly, there is an advantage to improve the washing and rinsing performance can be implemented by the optimal washing program.

Claims (6)

In the electrode sensor detection method of the washing machine in which the detection value is detected in the washing water by the electrode sensor during the washing process, the detection value of the electrode sensor is converted into the conductivity of the washing water in the controller, the conductivity of the washing water is measured, A first step in which a correction group of the controller is set according to a detection value of the electrode sensor in a reference condition during an inspection process, and a detection value of the electrode sensor is detected in washing water during a washing process; A second step of sensing an ambient temperature of the controller after the detection value of the electrode sensor is detected in the first step; A third step of calculating a correction value of the controller according to the correction group of the controller set in the first step and the ambient temperature of the controller detected in the second step; And a fourth step of converting the detected value of the electrode sensor into a conductivity of the wash water in consideration of the correction value of the controller calculated in the third step. The method of claim 1, The first step of the electrode sensor detection method of the washing machine comprising the step of setting the correction group of the controller by comparing the detected value of the electrode sensor with the set value in the reference condition. The method of claim 1, In the first step, the reference condition is an aqueous solution of a set concentration, and the set value is an electrode sensor detection method of a washing machine, characterized in that the detection value of the electrode sensor connected to the standard controller in the reference condition. The method of claim 1, The method of claim 3, wherein the correction value of the controller is calculated from a temperature compensation table showing a correction group of the controller and a correction value of the controller according to the ambient temperature of the controller. In the electrode sensor detection method of the washing machine in which the detection value is detected in the washing water by the electrode sensor during the washing process, the detection value of the electrode sensor is converted into the conductivity of the washing water in the controller, the conductivity of the washing water is measured, A first step of detecting a detection value of the electrode sensor in the washing water during a washing process; A second step of sensing an ambient temperature of the controller after the detection value of the electrode sensor is detected in the first step; A third step of calculating a correction value of the controller according to the ambient temperature of the controller detected in the second step; And a fourth step of converting the detected value of the electrode sensor into a conductivity of the wash water in consideration of the correction value of the controller calculated in the third step. The method of claim 5, wherein The method of claim 3, wherein the correction value of the controller is calculated from a temperature compensation table showing a correction value of the controller according to the ambient temperature of the controller.