KR100297050B1 - Method for determining number of time for rinsing of washing machine - Google Patents

Method for determining number of time for rinsing of washing machine Download PDF

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Publication number
KR100297050B1
KR100297050B1 KR1019930027102A KR930027102A KR100297050B1 KR 100297050 B1 KR100297050 B1 KR 100297050B1 KR 1019930027102 A KR1019930027102 A KR 1019930027102A KR 930027102 A KR930027102 A KR 930027102A KR 100297050 B1 KR100297050 B1 KR 100297050B1
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South Korea
Prior art keywords
rinsing
foam
degree
value
bubble
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KR1019930027102A
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Korean (ko)
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KR950018824A (en
Inventor
우경철
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구자홍
엘지전자 주식회사
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/58—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

PURPOSE: A time number determining method for rinsing of a washing machine is provided to control a water level for rinsing and a number of rinsing according to a bubble degree and a bubble remove ratio. CONSTITUTION: A time number determining method for rinsing of a washing machine includes the steps of computing a mean voltage value per section by detecting thickness sensing voltage periodically and judging a bubble generation degree by the calculated value, adding absolute values of a difference between a current thickness sensing voltage with a previous one, obtaining a bubble remove ratio by judging a bubble amount from mean voltage values per section, a voltage value at an initial period, an absolute value of a difference among a certain period and previous and next period thereof, and determining a number of rinsing on the basis of the bubble amount and the bubble remove ratio.

Description

세탁기의 헹굼 횟수 결정 방법How to determine the number of rinses of the washing machine

본 발명은 세탁기에 관한 것으로, 특히 광센서를 이용하여 세탁과 헹굼중에 발생하는 거품 변화량을 감지하여 헹굼수위 및 헹굼횟수 결정에 반영하므로써, 헹굼성능을 높이고 거품에 대한 소비자의 불만을 해결하기 위한 헹굼횟수 결정방법을 제공하기 위한 것이다.The present invention relates to a washing machine, and in particular, by using an optical sensor to detect the amount of foam changes occurring during washing and rinsing and reflecting in the rinsing water level and the number of rinsing, rinsing to improve the rinsing performance and to resolve consumer complaints about foam To provide a method for determining the number of times.

종래 자동세탁기의 세탁장치는 첨부한 도면 제1도에 도시한 바와 같이 세탁기의 전체 시스템을 제어하는 마이콤(1)과, 상기 마이콤(1)의 제어를 받아 회전하는 구동모터(2)와, 상기 구동모터(2)와 연결되어 세탁물과 세탁수를 담는 세탁조(3)로 구성된다.The washing machine of the conventional automatic washing machine includes a microcomputer (1) for controlling the entire system of the washing machine, a driving motor (2) rotated under the control of the microcomputer (1), and as shown in FIG. It is connected to the drive motor (2) consists of a washing tank (3) containing laundry and wash water.

이와 같은 종래 세탁기는 세탁기에 설치되어 있는 기억장치에 입력된 정해진 방법에 따라 마이콤(1)의 제어를 받아 헹굼과정을 수행하도록 되어 있다.Such a conventional washing machine is configured to perform a rinsing process under the control of the microcomputer 1 according to a predetermined method input to a storage device installed in the washing machine.

즉, 세탁물의 량에 따라 포량검출하여 정해진 세탁횟수만큼 세탁수량과 세제량이 마이콤의 제어를 받아 세탁조 내에 순차로 공급되고 상기 마이콤의 제어를 받아 모터의 회전에 의하여 세탁조가 회전함으로써 세탁을 수행하게 된다.That is, by detecting the amount of laundry according to the amount of laundry, the amount of washing and the amount of detergent are sequentially supplied into the washing tank under the control of the microcomputer and the washing tank rotates by the rotation of the motor under the control of the microcomputer to perform the washing. .

이와 같은 세탁과정이 끝난 세탁수는 배수구를 통하여 배출되고 세탁조내로 새로운 세탁수가 공급되어 세탁물의 헹굼을 수행하게 된다.The washing water after the washing process is discharged through the drain and new washing water is supplied into the washing tank to rinse the laundry.

이와 같은 세탁과정이 끝난 세탁수는 배수구를 통하여 배출되고 세탁조내로 새로운 세탁수가 공급되어 세탁물의 헹굼을 수행하게 된다.The washing water after the washing process is discharged through the drain and new washing water is supplied into the washing tank to rinse the laundry.

상기 헹굼과정은 기억장치에 입력되어 있는 정해진 횟수에 따라 마이콤의 제어를 받아 행하게 되고 상기 헹굼과정이 끝나면 탈수과정을 거쳐 세탁을 끝나게 된다.The rinsing process is performed under the control of the microcomputer according to a predetermined number of times input to the memory device. When the rinsing process is finished, the rinsing process is dehydrated to finish the washing.

그런데, 이와 같은 종래 세탁장치에서는 세탁물의 양이나 세제첨가정도, 세탁물의 온도 등과 같은 세탁조건에 따라 헹굼이 끝난 후에도 잔류세제로 인하여 거품이 남아 있게 되어 사용자는 재차 헹굼과정을 해 주어야 하는 문제점이 있었다.However, in the conventional laundry machine, bubbles remain due to residual detergent even after the rinsing is finished according to the washing conditions such as the amount of laundry, the degree of detergent addition, and the temperature of the laundry, so that the user has to rinse again. .

따라서 본 발명의 목적은 세탁 및 헹굼 과정에서 발생하는 거품의 변화량을 센서로 감지하여 헹굼횟수와 수위량을 결정하여 주므로써, 헹굼성능에 대한 소비자의 불만족을 해결하기 위한 세탁기의 헹굼 횟수 결정방법을 제공하는데 그 목적이 있다.Therefore, an object of the present invention is to determine the rinsing frequency and the level of water by detecting the amount of change in the foam generated during the washing and rinsing process by the sensor, to determine the rinsing frequency of the washing machine to solve the consumer dissatisfaction with the rinsing performance The purpose is to provide.

제1도는 종래 헹굼 횟수 결정장치를 보인 도면,1 is a view showing a conventional rinsing frequency determination device,

제2도는 본 발명에 따른 헹굼 횟수 결정장치를 보인 도면,2 is a view showing a rinsing frequency determination device according to the invention,

제3도는 본 발명에 따른 헹굼 횟수 결정 방법의 흐름도,3 is a flowchart of a method for determining the number of rinses according to the present invention;

제4도는 제2도를 설명하기 위한 탁도전압 세부 파형도,4 is a detailed waveform diagram of turbidity voltage for explaining FIG. 2;

제5도는 제2도를 설명하기 위한 탁도전압 개략도,5 is a schematic diagram of a turbidity voltage for explaining FIG. 2;

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 마이콤 2 : 구동모터1: Micom 2: Drive motor

3 : 세탁조 4 : 감지센서3: washing tank 4: detection sensor

상기와 같은 본 발명의 목적을 달성하기 위한 방법은, 세탁조 내부에 설치하여 세탁과 헹굼에서 발생하는 거품의 발생정도를 감지하는 감지수단과, 상기 감지수단으로부터 입력된 탁도전압으로부터 헹굼횟수를 결정하는 제어수단으로 구성한 세탁기를 구비하여, 세탁시 거품의 정도를 광센서의 탁도감지전압으로 20초마다 3분동안 검출하여 그 검출된 값과 평균 탁도 전압으로 부터 임의 시간간격에서의 탁도에 따른 평균전압값을 계산하고, 그 계산된 값으로 부터 거품 발생정도를 판정하는 단계와, 상기 단계에서 판정한 거품값을 기준으로 헹굼을 시작하여 60초가 넘을 때까지 20초 경과 때마다 탁도에 따라 읽어들인 전압값과 앞 단계의 탁도전압값과의 차이 절대값들을 합산하는 단계와, 상기 단계까지의 경과시간이 60초 이상이 되면, 측정한 전압값을 계산하여 구한 임의 시간 간격에서의 탁도에 따른 평균전압값과 초기 시간간격에서의 평균전압값 및 전·후 단계에서의 전압차의 절대값으로부터 구한 값으로 거품량을 판정하여 거품제거율을 구하는 단계와, 상기 단계에서 구한 거품량과 거품제거율로부터 거품제거도를 판단하여 헹굼횟수를 결정하는 단계로 이루어지므로써 달성되는 것이다.Method for achieving the object of the present invention as described above, installed in the washing tank to detect the degree of generation of bubbles generated in the washing and rinsing, and to determine the number of rinses from the turbidity voltage input from the sensing means Washing machine configured as a control means, the degree of foam during washing is detected for 3 minutes every 20 seconds by the turbidity detection voltage of the optical sensor, the average voltage according to the turbidity at any time interval from the detected value and the average turbidity voltage Calculating the value of the foam, and determining the degree of foaming from the calculated value, and starting the rinsing based on the value of the foam determined in the above step, the voltage read according to the turbidity every 20 seconds until 60 seconds is exceeded. Summing the absolute values of the difference between the value and the turbidity voltage value of the previous step, and when the elapsed time to the step is 60 seconds or more, the measured voltage Obtaining the bubble removal rate by determining the bubble amount from the average voltage value according to the turbidity at any time interval, the average voltage value at the initial time interval, and the absolute value of the voltage difference in the before and after steps And, it is achieved by determining the number of rinsing by determining the degree of foaming from the amount of foam and the foaming removal rate obtained in the above step.

첨부한 도면 제2도는 본 발명의 세탁방법을 달성하기 위한 세탁장치의 블록도로서, 세탁기의 전반적인 동작을 제어하는 마이콤(1)과, 상기 마이콤의 제어를 받아 회전을 제공하는 구동모터(2)와, 상기 구동모터(2)에 의해 회전하고, 세탁물과 세탁수 등을 담기 위한 세탁조(3)와, 상기 세탁조 내부에서 세탁이나 헹굼이 끝난 상태의 세탁수 거품정도를 감지하여 상기 마이콤(1)에 제공하는 감지센서(4)로 구성된다.2 is a block diagram of a washing apparatus for achieving a washing method of the present invention, a microcomputer (1) for controlling the overall operation of the washing machine, and a drive motor (2) for providing rotation under the control of the microcomputer And, by the drive motor (2), the washing tank (3) for containing the laundry and wash water, and the washing and rinsing state of the washing water rinsed in the inside of the washing tank to sense the micom (1) It consists of a sensor 4 to provide.

이와 같이 구성한 세탁기를 구비하여 본 발명의 세탁방법에 따른 동작 및 효과를 첨부한 도면, 제3도의 흐름도와, 제4도의 탁도전압 세부파형도 및 제5도의 탁도전압 개략도를 참조하여 설명하면 다음과 같다.Referring to the accompanying drawings, the operation and effect of the washing method according to the present invention with a washing machine configured as described above with reference to the flowchart of FIG. 3, the detailed waveform diagram of haze voltage of FIG. 4 and the schematic diagram of haze voltage of FIG. same.

먼저, 세탁조(3)내에 세탁할 세탁물과 일정량의 세탁수를 투입하여 세탁물의 포량을 검출한다. 상기 과정을 통하여 세탁물의 포량을 마이콤(1)이 판단하여 추가 공급될 세탁수의 양을 결정하여 준다. 이어서 적정한 양의 세제가 첨가되면, 사용자가 선택한 세탁시간에 따라서 상기 마이콤(1)의 제어를 받은 구동모터(2)는 세탁조(3)에 회전력을 제공하여 상기 세탁조(3)를 회전하게 함으로써, 세탁을 시작하게 된다.First, the laundry to be washed and a certain amount of washing water are put into the washing tank 3 to detect the amount of laundry. Through the above process, the amount of laundry to be determined by the microcomputer 1 determines the amount of wash water to be additionally supplied. Subsequently, when the appropriate amount of detergent is added, the drive motor 2 under the control of the microcomputer 1 according to the washing time selected by the user provides the rotational force to the washing tank 3 to rotate the washing tank 3, You will start washing.

세탁 시작후 재급수시 급수 밸브 닫는 신호를 감지하여 일정시간동안 일정주기로 감지센서(4)에서 감지한 탁도전압의 변화정도를 측정하여 세탁시 거품의 정도를 판정한다. 즉, 세탁시 감지센서(4)는 3분동안 20초마다 탁도전압의 변화정도를 측정하여 세탁시 거품의 정도를 판정하는 것이다.When the water supply valve closing signal is detected after the start of washing, the degree of change in turbidity voltage detected by the detection sensor 4 is measured at a predetermined period for a predetermined time to determine the degree of foam during washing. That is, the washing sensor 4 measures the degree of change in turbidity voltage every 20 seconds for three minutes to determine the degree of foaming during washing.

즉, 제5도에서 P1(V1,t1)점을 시작점으로 샘플링시간(5초간격) 후의 P2(V2,t2)점과의 탁도전압변화의 절대치, ｜Δ V1｜을 구하고, 다시 P2(V2,t2)점을 시작점으로 P3(V3,t3)점과의 탁도전압변화의 절대치 ｜Δ V2｜을 구하는 과정을 3분까지 반복한 후, 하기의 식(1)을 이용하여 세탁시 거품정도를 구한다.That is, in FIG. 5, the absolute value of the change in turbidity voltage from the point P 2 (V 2 , t 2 ) after the sampling time (5 seconds interval) starting from the point P 1 (V 1 , t 1 ), | Δ V 1 | Then, repeat the process of calculating the absolute value of the change in turbidity voltage ｜ Δ V 2 ｜ from the point P 2 (V 2 , t 2 ) to the point P 3 (V 3 , t 3 ). Using the formula (1) below to obtain the degree of foam during washing.

Vo= (V1+ V2+ V3)/ 3V o = (V 1 + V 2 + V 3 ) / 3

Vf= (Pn-2+ Pn-1+ Pn)/ 3V f = (P n-2 + P n-1 + P n ) / 3

Δ Vi : 전회의 세탁단계와의 탁도 전압치Δ Vi: Turbidity voltage value from the last washing step

Vo: 초기 탁도전압의 평균전압V o : Average voltage of initial turbidity voltage

Vf: 임의 탁도전압의 평균전압V f : Average voltage of arbitrary turbidity voltage

Pn: n번 세탁횟수의 탁도전압P n : Turbidity voltage of n washes

거품(j) : 세탁시 거품도 (j=1)Foam (j): Foam at washing (j = 1)

j : 세탁횟수j: washing count

0초 ≤ 시간 ≤ 180초0 seconds ≤ time ≤ 180 seconds

상기 (1)식에서 구한 거품도를 기준으로 하고 표1의 거품도 판정표를 이용하여 마이콤(1)은 거품도를 판정하게 된다.On the basis of the degree of foaming obtained in the above formula (1), the microcomputer 1 determines the degree of foaming using the degree of foaming determination table in Table 1.

즉, 거품도가 1이상이면 거품이 아주 많은 상태라고 판정하고, 거품도가 0.5이상 1미만이면, 거품이 많은 것으로 판정하고, 거품도가 0.3이상 0.5미만이면, 거품이 작다고 판정하며, 거품도가 0.3미만이면, 거품이 아주 적은 것으로 판단한다.In other words, if the degree of foam is 1 or more, it is determined that there is a lot of bubbles. If the degree of foam is 0.5 or more and less than 1, it is determined that there are many bubbles. If the degree of foam is 0.3 or more and less than 0.5, it is determined that the bubbles are small. If is less than 0.3, it is judged that there are very few bubbles.

상기 단계에서 거품정도를 판정한 마이콤(1)은 헹굼을 시작하도록 급수를 시작하는데, 급수 후, 일정시간 경과한 시간부터 일정시간이 경과할 때까지 세탁조내의 감지센서(4)에서 감지한 탁도전압의 변화정도로서 헹굼과정에서의 거품의 정도를 판정하게 된다. 즉, 상기 감지센서(4)는 급수후에 20초가 경과한 시간부터 1분 경과한 시간까지의 감지한 탁도전압의 변화정도로서 헹굼과정에서의 거품의 정도를 판정하는 것이다.The microcomputer (1) having determined the degree of foam in the above step starts the water supply to start rinsing, after the water supply, turbidity voltage detected by the sensor 4 in the washing tank from a time elapsed from a certain time to a time elapsed The degree of foaming during the rinsing process is determined as the degree of change of. That is, the detection sensor 4 determines the degree of foaming in the rinsing process as the degree of change in the detected turbidity voltage from the time of 20 seconds after the water supply to the time of 1 minute.

이러한 헹굼과정에서의 거품도 판정은 상기의 세탁과정에서의 거품도를 판정하는 거품도 판정표 1과 동일하며, 하기식(2)와 같이 거품도(j)를 구한다.The foaming degree determination in this rinsing process is the same as the foaming degree determination table 1 for determining the foaming degree in the washing process, and obtains the foaming degree j as shown in the following equation (2).

Vo= (V1+ V2+ V3)/ 3V o = (V 1 + V 2 + V 3 ) / 3

Vf= (Pn-2+ Pn-1+ Pn)/ 3V f = (P n-2 + P n-1 + P n ) / 3

Δ Vi : 전회의 헹굼단계와의 탁도 전압치Δ Vi: Turbidity voltage value from the previous rinsing step

Vo: 초기 탁도전압의 평균전압V o : Average voltage of initial turbidity voltage

Vf: 임의 탁도전압의 평균전압V f : Average voltage of arbitrary turbidity voltage

Pn: n번 헹굼횟수의 탁도전압P n : Turbidity voltage of n rinses

j = 1 : 헹굼 1회, j = 2 : 헹굼 2회, j = 3 : 헹굼 3회j = 1: 1 rinse, j = 2: 2 rinse, j = 3: 3 rinse

0초 ≤ 시간 ≤ 60초0 seconds ≤ time ≤ 60 seconds

[표 1]TABLE 1

즉, 헹굼시마다 상기 (2) 식의 방법으로 거품도를 구하고, 헹굼과정을 한 번 더 수행함으로써 전회의 헹굼단계에서 남아 있던 거품도(j-1)와 추가헹굼에서 잔류하는 거품도(j)를 뺀 값의 백분율인 거품 제거율을 하기의 (3)식으로 구하여 표(2)와 같이 판정하게 된다.That is, each time the rinse is obtained by the method of the foam (2) method, the rinsing process is performed one more time, the degree of foam remaining in the previous rinsing step (j-1) and the degree of foam remaining in the further rinsing (j) The bubble removal rate, which is a percentage of the value obtained by subtracting, is obtained by the following Equation (3), and is determined as shown in Table (2).

[표 2]TABLE 2

즉, 거품도가 1이상인 상태에서 거품제거율이 20 이상이면, 거품제거도는 매우 불량하고, 거품제거율이 20미만이면, 거품제거율은 불량한 것으로 판정한다.That is, if the bubble removal rate is 20 or more in the state where the bubble degree is 1 or more, the bubble removal degree is very poor, and when the bubble removal rate is less than 20, it is determined that the bubble removal rate is poor.

거품도가 0.5이상 1미만인 상태에서는 거품제거율이 20이상이면, 거품제거도는 불량이고, 거품제거율이 20미만이면, 양호한 것으로 판정한다.In a state in which the foaming degree is 0.5 or more and less than 1, it is determined that the foaming degree is poor when the foaming removal rate is 20 or more, and that it is satisfactory when the foaming rate is less than 20.

거품도가 0.5미만인 상태에서는 거품제거율이 20이상이면, 거품제거도는 양호하고, 거품제거율이 20미만이면, 매우 양호한 것으로 판정한다In the state where the foaming degree is less than 0.5, when the foaming removal rate is 20 or more, foaming degree is favorable, and when foaming rate is less than 20, it is judged that it is very favorable.

상기 표2의 기준으로 거품제거도를 판정한 마이콤은 이를 이용하여 헹굼횟수를 결정하게 된다.The microcomputer having determined the degree of foam removal based on the criteria of Table 2 determines the number of rinses using the microcomputer.

이상에서 설명한 바와 같이, 본 발명은 세탁 헹굼시 거품의 정도와 거품제거 정도를 판정하여 헹굼시 헹굼 수위를 조절하거나 거품의 잔류정도와 거품의 제거정도에 따라 헹굼 횟수를 추가하여 사용자로 하여금 만족한 세탁을 할 수 있게 하는 효과가 있다.As described above, the present invention determines the degree of foam and the degree of foam removal during washing rinse to adjust the level of rinsing during rinsing or to add the number of rinsing depending on the degree of foam remaining and the degree of foam removal to the user It has the effect of being able to wash.

Claims (1)

(정정) 세탁시 거품의 정도를 광센서의 탁도감지전압으로 일정시간동안 일정주기로 검출하여 그 검출된 값으로부터 임의주기에서의 탁도에 따른 구간별 평균전압값을 계산하고, 그 계산된 값으로부터 거품발생정도를 판정하는 단계와, 상기 거품 발생정도를 판정하는 단계에서 판정한 거품값을 기준으로 헹굼을 시작하여 일정시간이 경과될 때까지 일정주기마다 탁도에 따라 읽어들인 전압값과 탁도 전압값을 읽은 주기의 앞 주기의 탁도 전압값과의 차의 절대값을 합산하는 단계와, 상기 절대값을 합산하는 단계까지의 경과시간이 일정시간 이상이 되면, 측정한 전압값을 계산하여 구한 임의주기에서의 탁도에 따른 구간별 평균전압값과 초기 주기에서의 전압값 및 임의주기와 상기 임의주기의 전주기나 후주기에서의 전압차의 절대값으로부터 구한 값으로 거품량을 판정하여 거품제거율을 구하는 단계와, 상기 거품제거율을 구하는 단계에서 구한 거품량과 거품제거율로부터 거품제거도를 판단하여 헹굼횟수를 결정하는 단계로 이루어짐을 특징으로 하는 세탁기의 헹굼 횟수 결정방법.(Correction) The degree of foam during washing is detected for a certain period of time by the turbidity detection voltage of the optical sensor, and the average voltage value according to the turbidity at an arbitrary period is calculated from the detected value, and the bubble is calculated from the calculated value. Starting the rinsing on the basis of the bubble value determined in the step of determining the occurrence of the bubble and the degree of bubble generation, and the voltage value and the turbidity voltage value read according to the turbidity at regular intervals until a predetermined time elapses. When the elapsed time between the step of adding the absolute value of the difference with the turbidity voltage value of the preceding period of the read cycle and the step of adding the absolute value is more than a predetermined time, the measured voltage value is calculated in an arbitrary period obtained. Obtained from the average voltage value of each section according to the turbidity, the voltage value in the initial period, and the absolute value of the voltage difference in the arbitrary period and the preceding or subsequent period of the arbitrary period Determining the amount of rinsing by determining the amount of foam by determining the amount of foam by the value of the foam, and determining the number of rinsing times by determining the degree of foaming from the amount of foam and the amount of foam removed in the step of determining the amount of foam removing. How to decide.
KR1019930027102A 1993-12-09 1993-12-09 Method for determining number of time for rinsing of washing machine KR100297050B1 (en)

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KR100601056B1 (en) * 1999-06-02 2006-07-19 엘지전자 주식회사 Lather sensing method for drum type washing machine
KR101989177B1 (en) * 2018-08-29 2019-09-30 엘지전자 주식회사 Washing machine based on artificial intelligence and method for controlling thereof

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KR20030044491A (en) * 2001-11-30 2003-06-09 대우전자주식회사 Automatically rinse controlling apparatus and method for washing mechine
KR101373620B1 (en) * 2012-04-04 2014-03-12 동부대우전자 주식회사 Apparatus and method for detecting installation defect of wall mounted drum type washing machine

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KR930010287A (en) * 1991-11-14 1993-06-22 강진구 How to control rinse frequency

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Publication number Priority date Publication date Assignee Title
KR100601056B1 (en) * 1999-06-02 2006-07-19 엘지전자 주식회사 Lather sensing method for drum type washing machine
KR101989177B1 (en) * 2018-08-29 2019-09-30 엘지전자 주식회사 Washing machine based on artificial intelligence and method for controlling thereof
US11268227B2 (en) 2018-08-29 2022-03-08 Lg Electronics Inc. Washing machine based on artificial intelligence and method of controlling the same

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