KR19990041217A - Foam detection method of drum washing machine - Google Patents

Foam detection method of drum washing machine Download PDF

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Publication number
KR19990041217A
KR19990041217A KR1019970061779A KR19970061779A KR19990041217A KR 19990041217 A KR19990041217 A KR 19990041217A KR 1019970061779 A KR1019970061779 A KR 1019970061779A KR 19970061779 A KR19970061779 A KR 19970061779A KR 19990041217 A KR19990041217 A KR 19990041217A
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South Korea
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water level
washing
level
dehydration
washing machine
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KR1019970061779A
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Korean (ko)
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도기형
이병우
박태인
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구자홍
엘지전자 주식회사
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Priority to KR1019970061779A priority Critical patent/KR19990041217A/en
Publication of KR19990041217A publication Critical patent/KR19990041217A/en

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Abstract

탈수행정 수행시 거품에 의한 수위감지에러를 방지할 수 있도록 한 드럼세탁기의 거품감지방법에 관한 것으로, 수위센서를 구비한 드럼세탁기의 거품감지방법에 있어서, 세탁명령에 따라 세탁 또는 헹굼을 수행하는 단계와, 세탁 또는 헹굼완료후 일정시간 저속탈수를 수행하고 수위센서에 의해 현재수위를 측정하는 단계와,현재수위와 공수위를 비교하는 단계와, 그 비교결과 현재수위가 공수위 보다 높으면 거품발생을 감지하고 현재수위가 공수위 이하이면 정상탈수하는 단계를 포함하여 이루어지므로 탈수효율 및 사용자의 신뢰성을 동시에 향상시킬 수 있다.The foam washing method of the drum washing machine to prevent the water level detection error caused by the foam during the dehydration administration, the foam sensing method of the drum washing machine having a water level sensor, washing or rinsing according to the washing instruction Performing a slow dehydration for a certain time after completion of washing or rinsing, and measuring the current water level by the water level sensor, comparing the current water level with the water level, and as a result of the comparison, bubbles are generated if the current water level is higher than the water level Detect and if the current water level is below the airborne level, including the normal dehydration step is made, so that the dehydration efficiency and the user's reliability can be improved simultaneously.

Description

드럼세탁기의 거품감지방법Foam detection method of drum washing machine

본 발명은 세탁기에 관한 것으로서, 특히 드럼세탁기의 플라스틱 터브 보호방법에 관한 것이다.The present invention relates to a washing machine, and more particularly, to a plastic tub protection method of a drum washing machine.

일반적으로 세탁기는 기설정된 알고리즘에 따라 세탁, 헹굼 및 탈수행정을 수행하여 세탁물을 세탁하는 기계장치로서, 세탁방식에 따라 펄세이터식, 교반식, 드럼식 등으로 구분된다.Generally, a washing machine is a machine for washing laundry by performing washing, rinsing, and dehydrating strokes according to a predetermined algorithm. The washing machine is classified into a pulsator type, a stirring type, a drum type, and the like according to a washing method.

이때 드럼세탁기는 다른 종류의 세탁기에 비해 세탁물 손상률 최소 및 사용수량 최저라는 장점을 구비하여 널리 사용되고 있으며 도 1에 도시된 바와 같이, 본체(1), 상기 본체(1) 내부에 댐퍼(도시 생략)에 의해 고정된 터브(2), 상기 터브(2)내에 세탁물이 투입되고 모터(10)의 구동력을 밸트(11)를 통해 전달받아 회전하여 세탁관련행정이 이루어지는 드럼(3), 상기 드럼(3)에 공급된 세척수의 온도를 측정하기 위한 제 1 써미스터(4), 세제를 투입하기 위한 세제통(5), 상기 세제통(5)과 연결되어 세척수 또는 상기 세제통(5)의 세제가 혼합된 세척수를 급수하기 위한 급수관(6), 세탁행정에서 사용된 세척수를 외부로 배출하기 위한 배수관(7), 상기 배수관(7) 끝단에 연결되어 세척수를 강제로 펌핑하기 위한 펌프(8) 및 배수호스(9)를 포함하여 구성된다.At this time, the drum washing machine has been widely used, with the advantage of lowering the damage rate of laundry and the lowest use quantity, compared to other types of washing machines. As shown in FIG. 1, a damper (not shown) inside the main body 1 and the main body 1 is shown. Tub (2) fixed by the (2), laundry is put into the tub (2), the drum (3), the drum (3), which is rotated by receiving the driving force of the motor (10) through the belt (11) and rotating. 3) the first thermistor (4) for measuring the temperature of the wash water supplied to the detergent, the detergent container (5) for injecting detergent, the washing water connected to the detergent container (5) or the wash water mixed with the detergent of the detergent container (5) Water supply pipe (6) for supplying water, a drain pipe (7) for discharging the washing water used in the washing stroke to the outside, the pump (8) and drain hose for forcibly pumping the washing water connected to the end of the drain pipe (7) 9) is configured to include.

그리고 이와 같이 구성된 드럼세탁기의 동작을 살펴보면, 먼저 사용자가 본체(1) 전면에 부착된 도어(도시 생략)를 열고 세탁물을 투입한 다음 컨트롤 패널을 통해 세탁명령을 입력하면, 세척수가 상기 세제통(5)을 통해 급수관(6)의 안내를 받아 드럼(7)내에 채워진다. 이어서 수위센서(도시 생략)가 기투입된 세탁물에 상응하는 설정수위 많큼 세척수가 채워진 것을 감지하여 그 감지값을 제어부에 출력한다. 그리고 제어부는 상기 감지값에 따라 급수완료를 인식하여 드럼(3)이 회전하도록 모터(10)를 구동시켜 세탁을 진행한다.And when looking at the operation of the drum washing machine configured as described above, first, when the user opens the door (not shown) attached to the front of the main body 1, puts the laundry, and inputs the washing command through the control panel, the washing water is the detergent container (5). Guided by the water supply pipe (6) through the) is filled in the drum (7). Subsequently, the water level sensor (not shown) detects that the washing water is filled up to a predetermined level corresponding to the laundry which has been introduced and outputs the detected value to the controller. The control unit recognizes the completion of water supply according to the detected value and drives the motor 10 to rotate the drum 3 to proceed with washing.

한편, 세탁이 완료되면 펌프(8)가 동작하여 세척수가 상기 배수관(7) 및 배수호스(9)를 경유하여 외부로 배수되고 배수가 완료되면 계속해서 헹굼, 탈수행정이 수행되어 세탁행정이 종료된다.On the other hand, when the washing is completed, the pump 8 is operated so that the washing water is drained to the outside via the drain pipe 7 and the drain hose 9, and when the draining is completed, the rinsing and dehydrating stroke are continuously performed, and the washing administration is finished. do.

이때 드럼세탁기는 세탁행정시 세제를 세척수와 함께 투입한 후 좌우교반에 의해 세탁을 수행하므로 거품이 많이 발생하고 이는 수위센서의 동작을 방해하여 수위감지에러 등을 발생시킬 수 있다.In this case, the drum washing machine puts detergent together with the washing water in the washing administration and performs washing by left and right stirring, which causes a lot of bubbles, which may interfere with the operation of the water level sensor, resulting in a water level detection error.

종래의 기술에 따른 드럼세탁기는 탈수행정수행시 거품감지동작을 수행하지 않으므로 전행정 즉, 세탁행정 또는 헹굼행정에서 잔존한 세제찌꺼기에 의해 거품이 발생하고 그에 따라 수위가 고수위로 감지되어 모터가 정지하고 탈수진행이 정지되는 문제점이 있다.Drum washing machine according to the prior art does not perform the bubble detection operation during the dehydration stroke, the foam is generated by the detergent residue remaining in the entire stroke, that is, the washing stroke or rinsing stroke, and the water level is detected at a high level accordingly, the motor is stopped. There is a problem that the dehydration progress is stopped.

따라서 본 발명은 상기한 종래의 문제점을 해결하기 위하여 안출한 것으로서 탈수행정 수행시 거품에 의한 수위감지에러를 방지할 수 있도록 한 드럼세탁기의 거품감지방법을 제공함에 그 목적이 있다.Accordingly, an object of the present invention is to provide a foam washing method of a drum washing machine, which can prevent the water level sensing error caused by foam when dehydrating and performing the above-described problem.

도 1은 일반적인 드럼세탁기의 구조를 나타낸 단면도1 is a cross-sectional view showing the structure of a general drum washing machine

도 2는 본 발명에 따른 드럼세탁기의 거품감지방법을 나타낸 플로우챠트Figure 2 is a flow chart illustrating a foam detection method of the drum washing machine according to the present invention

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

1: 본체 2: 터브1: body 2: tub

3: 드럼 4: 써미스터3: drum 4: thermistor

5: 세제통 6: 급수관5: detergent container 6: water pipe

7: 배수관 8: 펌프7: drain pipe 8: pump

9: 배수호스 10: 모터9: drain hose 10: motor

11: 밸트11: belt

본 발명은 수위센서를 구비한 드럼세탁기의 거품감지방법에 있어서, 세탁명령에 따라 세탁 또는 헹굼을 수행하는 단계와, 세탁 또는 헹굼완료후 일정시간 저속탈수를 수행하고 수위센서에 의해 현재수위를 측정하는 단계와, 현재수위와 공수위를 비교하는 단계와, 그 비교결과 현재수위가 공수위 보다 높으면 거품발생을 감지하고 현재수위가 공수위 이하이면 정상탈수하는 단계를 포함하여 이루어짐을 특징으로 한다.The present invention provides a foam washing method for a drum washing machine having a water level sensor, the method comprising: washing or rinsing according to a washing instruction, performing slow dehydration for a predetermined time after washing or rinsing is completed, and measuring a current level by a level sensor And a step of comparing the present water level with the airborne level, and detecting the occurrence of bubbles when the current water level is higher than the airborne level and normal dehydration when the current water level is lower than the airborne level.

이하, 첨부된 도면을 참조하여 본 발명에 따른 드럼세탁기의 거품감지방법을 살펴보면 다음과 같다.Hereinafter, with reference to the accompanying drawings, look at the foam detecting method of the drum washing machine according to the present invention.

도 2는 본 발명에 따른 드럼세탁기의 거품감지방법을 나타낸 플로우챠트이다.2 is a flow chart illustrating a foam detecting method of the drum washing machine according to the present invention.

본 발명에 따른 드럼세탁기의 거품감지방법은 도 2에 나타낸 바와 같이, 먼저, 사용자가 도어(도시 생략)를 열고 세탁물을 투입한 다음 컨트롤 패널을 통해 세탁명령 즉, 세탁모드 등 세탁관련명령을 입력하면 제어부는 상기 입력된 세탁명령에 상응하도록 세탁 또는 헹굼행정을 수행한다(S11). 이어서 세탁 또는 헹굼행정이 완료되는지 판단하여(S12), 세탁 또는 헹굼행정이 완료되면 정상적인 탈수행정을 수행하기 앞서, 일정시간 저속 즉, 정상적인 탈수속도에 비해 저속으로 탈수를 수행하고(S13), 수위를 감지한다(S14). 그리고 수위감지결과 현재수위가 공수위보다 높은지 여부를 판단한다(S15). 이어서 그 판단결과(S15), 현재수위가 공수위보다 높으면 드럼(3)내에 거품이 존재하는 것으로 인식한다(S18). 따라서 제어부는 거품발생을 감지하고 헹굼을 재수행하는 등의 적절한 조치를 취한다.In the foam washing method of the drum washing machine according to the present invention, as shown in FIG. 2, first, a user opens a door (not shown), inputs laundry, and then inputs a washing command, ie, a washing mode, through a control panel. The controller performs a washing or rinsing stroke corresponding to the input washing instruction (S11). Subsequently, it is determined whether the washing or rinsing stroke is completed (S12), and when the washing or rinsing stroke is completed, dehydration is performed at a low speed for a predetermined time, that is, at a low speed compared to the normal dehydrating speed (S13). Detect (S14). As a result of the water level detection, it is determined whether the current water level is higher than the airborne level (S15). Subsequently, as a result of the determination (S15), if the current water level is higher than the airborne level, it is recognized that bubbles exist in the drum 3 (S18). Therefore, the controller detects foaming and takes appropriate measures such as re-running rinsing.

이때 상기 판단결과(S15), 현재수위가 공수위보다 높다는 것은 상기 단계(S13)의 저속탈수에 의해 세탁물에 잔존한 세제찌꺼기로 부터 거품이 발생한 것을 의미한다.At this time, the determination result (S15), that the current water level is higher than the airborne level means that bubbles generated from the detergent residues remaining in the laundry by the slow dehydration of the step (S13).

한편, 상기 판단결과(S15), 현재수위가 공수위 이하이면 제어부내에 있는 카운터의 저장값(N)을 초기화시킨후 '1' 증가시킨다(S16). 따라서 상기 판단단계(S15)를 한 번 수행한 후 현재수위가 공수위 이하이면 카운터의 저장값(N)은 '1'이된다.On the other hand, when the determination result (S15), the current level is less than the empty level, the storage value (N) of the counter in the control unit is initialized and then increased by '1' (S16). Therefore, after the determination step S15 is performed once, if the current level is equal to or less than the empty level, the stored value N of the counter becomes '1'.

이어서 상기 카운터의 저장값(N)이 '3'이 되었는지 판단하여(S17), '3'에 도달하지 않았으면 상기 저속탈수를 포함한 단계(S13 ~ S16)를 재수행한다.Subsequently, it is determined whether the stored value N of the counter reaches '3' (S17), and if the '3' has not been reached, steps S13 to S16 including the low speed dehydration are performed again.

그리고 상기 단계(S13 ~ S16)를 '3'회 수행하여 거품이 감지되지 않고 카운터의 저장값(N)이 '3'에 도달하면 정상탈수를 수행한다(S19).When the bubbles are not detected by performing the steps S13 to S16 three times, and the storage value N of the counter reaches '3', normal dehydration is performed (S19).

이때 상기 단계(S13) 즉, 일정시간 저속탈수를 최초로 수행한 후 수위가 공수위 이하인 것으로 판단되더라도 잔존한 세제찌꺼기에 의해 거품이 발생할 수 있으므로 상기 저속탈수 수행단계(S13)를 본 발명의 적정회수로 설정된 '3'회 수행한 후 현재수위가 공수위 이하이면 탈수시 거품이 발생하지 않을 것으로 판단하여 정상탈수를 수행하는 것이다.At this time, even if the water level is determined to be below the airborne level after the first time of performing the low-speed dehydration for a predetermined time, bubbles may be generated due to the remaining detergent residues. If the current water level is less than the airborne level after performing the '3' times set to determine that no bubbles will occur when dehydration is to perform normal dehydration.

본 발명에 따른 드럼세탁기의 거품감지방법은 정상적인 탈수행정에 앞서 일정시간 동안 저속탈수를 수행한 다음 거품발생여부를 감지하므로 거품감지의 정확도를 높여 수위감지에러 및 그에 따른 탈수정지 등을 미연에 방지하여 탈수효율 및 사용자의 신뢰성을 동시에 향상시킬 수 있는 효과가 있다.The foam washing method of the drum washing machine according to the present invention prevents water level detection error and dehydration stop by increasing the accuracy of foam detection by performing low speed dehydration for a predetermined time prior to the normal dehydration operation and then detecting the occurrence of foam. Therefore, there is an effect to improve the dehydration efficiency and the user's reliability at the same time.

Claims (3)

수위센서를 구비한 드럼세탁기의 거품감지방법에 있어서,In the foam detecting method of the drum washing machine equipped with a water level sensor, 세탁명령에 따라 세탁 또는 헹굼을 수행하는 단계;Performing washing or rinsing according to a washing instruction; 상기 세탁 또는 헹굼완료후 일정시간 저속탈수를 수행하고 상기 수위센서에 의해 현재수위를 측정하는 단계;Performing slow dehydration for a predetermined time after the washing or rinsing completion and measuring a current water level by the water level sensor; 상기 현재수위와 공수위를 비교하는 단계;Comparing the current level with the empty level; 상기 비교결과 현재수위가 공수위 보다 높으면 거품발생을 감지하고 현재수위가 공수위 이하이면 정상탈수하는 단계를 포함하여 이루어짐을 특징으로 하는 드럼세탁기의 거품감지방법.And a step of detecting bubbles when the current water level is higher than the airborne level, and dehydrating the water level if the current water level is lower than the airborne water level. 제 1 항에 있어서,The method of claim 1, 상기 현재수위가 공수위 이하이면 정상탈수하는 단계는If the current water level is below the airborne level, the normal dehydration 상기 현재수위가 공수위 이하이면 카운터값을 증가시키는 단계와,Incrementing a counter value if the current water level is less than or equal to an empty water level; 상기 카운터값이 설정값에 도달하면 정상탈수를 수행하는 단계를 더 부가하여 이루어짐을 특징으로 하는 드럼세탁기의 거품감지방법.And a step of performing normal dehydration when the counter value reaches a set value. 제 2 항에 있어서,The method of claim 2, 상기 카운터값이 설정값에 도달하지 못하면If the counter value does not reach the set value 일정시간 저속탈수하는 단계와, 상기 수위센서에 의해 수위를 측정하는 단계와, 상기 수위센서에 의해 측정된 수위와 공수위를 비교하여 수위가 공수위 이하이면 카운터값을 증가시키는 단계와, 상기 증가된 카운터값이 설정값에 도달하였는지 여부를 판단하는 단계를 순차적으로 반복수행함을 특징으로 하는 드럼세탁기의 거품감지방법.Dehydrating a low speed for a predetermined time, measuring the water level by the water level sensor, comparing the water level and the air level measured by the water level sensor, and increasing the counter value if the water level is equal to or less than the water level; The foam washing method of the drum washing machine, characterized in that the step of repeatedly determining whether the counter value reaches the set value sequentially.
KR1019970061779A 1997-11-21 1997-11-21 Foam detection method of drum washing machine KR19990041217A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100766015B1 (en) * 2001-03-29 2007-10-11 주식회사 엘지이아이 home appliances with dryer and control method the same
KR100766034B1 (en) * 2001-03-29 2007-10-11 주식회사 엘지이아이 home appliances with dryer and control method the same
KR20180037831A (en) * 2016-10-05 2018-04-13 엘지전자 주식회사 Method for controlling washing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100766015B1 (en) * 2001-03-29 2007-10-11 주식회사 엘지이아이 home appliances with dryer and control method the same
KR100766034B1 (en) * 2001-03-29 2007-10-11 주식회사 엘지이아이 home appliances with dryer and control method the same
KR20180037831A (en) * 2016-10-05 2018-04-13 엘지전자 주식회사 Method for controlling washing machine

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