KR100413467B1 - Method for controlling dehydration in drum-type washing machine - Google Patents

Method for controlling dehydration in drum-type washing machine Download PDF

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Publication number
KR100413467B1
KR100413467B1 KR10-2001-0074942A KR20010074942A KR100413467B1 KR 100413467 B1 KR100413467 B1 KR 100413467B1 KR 20010074942 A KR20010074942 A KR 20010074942A KR 100413467 B1 KR100413467 B1 KR 100413467B1
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South Korea
Prior art keywords
drum
amount
speed
eccentricity
washing machine
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KR10-2001-0074942A
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Korean (ko)
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KR20030044245A (en
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손권
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엘지전자 주식회사
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Publication of KR20030044245A publication Critical patent/KR20030044245A/en
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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 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • 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 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
    • 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
    • D06F34/16—Imbalance
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2103/26—Unbalance; Noise level
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting

Abstract

본 발명은 세탁물이 드럼내에 고르게 분산되도록 발린싱을 적극적으로 제어하여 탈수진입 시간을 줄이는데 적당한 드럼세탁기의 탈수 제어방법에 관한 것으로, 드럼을 포붙임 속도 이하로 정속 제어하여 포분산하는 제 1 단계와; 상기 드럼의 회전속도 변화량을 검출하는 제 2 단계와; 상기 회전속도 변화량이 클 경우 상기 제 1 단계로 복귀하고 상기 회전속도 변화량이 작을 경우에는 상기 드럼을 포붙임 속도로 정속 제어하는 제 3 단계와; 포붙임 속도로 회전하는 상기 드럼의 편심량을 검출하는 제 4 단계와; 상기 편심량이 클 경우 상기 제 1 단계로 복귀하고 상기 편심량이 작을 경우에는 고속으로 회전시켜 탈수하는 제 5 단계로 이루어진다.The present invention relates to a dehydration control method of a drum washing machine suitable for reducing the dehydration entry time by actively controlling the baling so that laundry is evenly distributed in the drum. ; Detecting a change amount of the rotational speed of the drum; A third step of returning to the first step if the amount of change of the rotational speed is large and controlling the drum at a braking speed if the amount of change of the rotational speed is small; A fourth step of detecting the amount of eccentricity of the drum rotating at the embedding speed; When the amount of eccentricity is large, the process returns to the first step. When the amount of eccentricity is small, a fifth step of spinning at high speed and dewatering is performed.

Description

드럼세탁기의 탈수 제어방법 {METHOD FOR CONTROLLING DEHYDRATION IN DRUM-TYPE WASHING MACHINE}Dehydration control method of drum washing machine {METHOD FOR CONTROLLING DEHYDRATION IN DRUM-TYPE WASHING MACHINE}

본 발명은 드럼세탁기의 제어방법에 관한 것으로, 특히 세탁물이 드럼내에 고르게 분산되도록 발린싱을 적극적으로 제어하여 탈수진입 시간을 줄일 수 있는 드럼세탁기의 탈수 제어방법에 관한 것이다.The present invention relates to a control method of a drum washing machine, and more particularly, to a dehydration control method of a drum washing machine which can reduce the dehydration entry time by actively controlling the balancing so that laundry is evenly distributed in the drum.

일반적으로, 드럼 세탁 방식은 세제와 세탁수 및 세탁물이 드럼내에 투입된 상태에서, 모터의 구동력을 전달받아 회전하는 드럼과 세탁물의 마찰력을 이용하여 세탁을 행하는 방식으로서, 세탁물의 손상이 거의 없고 세탁물이 서로 엉키지 않으며, 두드리고 비벼빠는 세탁효과를 낼 수 있다.In general, the drum washing method is a method of washing the laundry using the friction force of the rotating drum and the laundry by receiving the driving force of the motor in a state in which detergent, washing water and laundry are put in the drum, there is almost no damage to the laundry and laundry Don't get tangled with each other, knocking and rubbing can have a laundry effect.

도 1을 참조하여 기존의 직결식 드럼세탁기의 구성에 대해 간략히 설명하면 다음과 같다.Referring to Figure 1 briefly described the configuration of a conventional direct-type drum washing machine as follows.

도 1은 기존의 직결실 드럼세탁기중 일 예를 나타낸 종단면도로서, 캐비닛(5) 내측에 터브(Tub)(3)가 설치되고, 상기 터브(3) 내측에는 드럼(9)이 설치된다.1 is a longitudinal cross-sectional view showing an example of a conventional direct connection room drum washing machine, a tub (Tub) 3 is installed inside the cabinet (5), the drum (9) is installed inside the tub (3).

그리고, 상기 드럼(9)에는 모터(6)의 구동력을 드럼(9)에 전달하는 드럼축(13)이 설치된다.The drum 9 is provided with a drum shaft 13 for transmitting the driving force of the motor 6 to the drum 9.

한편, 상기 드럼축(13)의 전후방에는 베어링(12)이 각각 설치되고, 상기 터브(3)의 후벽부 중앙에는 상기 베어링(12)을 지지하는 베어링 하우징이 설치된다.On the other hand, bearings 12 are respectively provided in front and rear of the drum shaft 13, and bearing housings for supporting the bearings 12 are installed in the center of the rear wall of the tub 3, respectively.

또한, 상기 터브(3) 후벽부에는 직결식 모터(6)를 구성하는 스테이터(7)가 체결되고, 상기 드럼축(13) 상에는 상기 스테이터(7)와 더불어 직결식 모터(6)를구성하는 로터(8)가 결합된다.In addition, a stator 7 constituting the direct type motor 6 is fastened to the rear wall of the tub 3, and the stator 7 together with the stator 7 is formed on the drum shaft 13. The rotor 8 is engaged.

이에 따라, 상기 드럼(9)은 로터(8)에 직결되어 회전하게 된다.Accordingly, the drum 9 is directly connected to the rotor 8 to rotate.

한편, 상기 캐비닛(5) 전방에는 도어(1)가 설치되고, 도어(1)와 터브(3) 사이에는 가스켓(2)이 설치된다.On the other hand, the door (1) is installed in front of the cabinet (5), the gasket (2) is installed between the door (1) and the tub (3).

그리고, 상기 캐비닛(5) 상부면 내측과 터브(3) 외주면 상부측 사이에는 터브(3)를 지지하는 행잉 스프링(Hanging spring)(4)이 설치되고, 상기 캐비닛(5) 하부면 내측과 터브(3) 외주면 하부측 사이에는 탈수시 발생하는 터브(3)의 진동을 감쇠시키기 위한 프릭션 댐퍼(10)가 설치된다.In addition, a hanging spring 4 for supporting the tub 3 is installed between the inside of the upper surface of the cabinet 5 and the upper side of the outer peripheral surface of the tub 3, and the inside of the lower surface of the cabinet 5 and the tub. (3) A friction damper 10 for damping the vibration of the tub 3 generated during dehydration is provided between the lower side of the outer peripheral surface.

또한, 모터(6) 일측에는 로터(8)의 회전수를 검출할 수 있는 모터센서(11)가 부착되어 있다.In addition, a motor sensor 11 capable of detecting the rotational speed of the rotor 8 is attached to one side of the motor 6.

한편, 이와 같이 구성된 기존의 드럼세탁기는, 드럼(9)내에 세탁물을 투입한 후, 원하는 세탁모드를 설정하여 세탁기를 구동시키면 드럼(9)에 물이 급수되고 드럼(9)이 회전하면서 세탁이 진행된다.On the other hand, the conventional drum washing machine configured as described above, after the laundry is put into the drum 9, the desired washing mode is set to drive the washing machine, water is supplied to the drum 9, and the drum 9 rotates to wash the laundry. Proceed.

그리고, 세탁 후 세탁에 사용된 물이 외부로 배출되면 헹굼행정이 진행되고, 이어서, 모터(6)를 고속으로 회전시켜 원심력에 의해 드럼(9)의 내측벽에 붙은 세탁물을 탈수하는데, 이때 세탁물이 드럼(9) 내에 고르게 분산되어 있지 않으면 편심이 발생하여 터브(3)가 심하게 진동하게 된다.Then, when the water used for washing after washing is discharged to the outside, the rinsing stroke proceeds. Then, the motor 6 is rotated at high speed to dehydrate the laundry attached to the inner wall of the drum 9 by centrifugal force. If it is not evenly distributed in this drum 9, eccentricity will arise and the tub 3 will vibrate violently.

도 2는 종래 드럼세탁기의 탈수행정을 나타낸 흐름도이고, 도 3, 4는 종래 드럼세탁기의 탈수 RPM 변화를 나타낸 그래프로서 이를 설명하면 다음과 같다.2 is a flowchart illustrating a dehydration stroke of a conventional drum washing machine, and FIGS. 3 and 4 are graphs illustrating changes in dehydration RPM of a conventional drum washing machine.

헹굼행정이 완료된 후 탈수행정이 진행되는데, 도 3에 도시한 바와 같이 먼저 드럼(9)의 내부에 있는 포를 고르게 분산시키기 위하여 드럼(9)의 회전속도를 세탁 회전수까지 서서히 증가시킨다(S21).After the rinsing stroke is completed, the dehydration stroke proceeds. First, as shown in FIG. 3, the rotation speed of the drum 9 is gradually increased to the washing rotation speed in order to evenly distribute the cloth inside the drum 9 (S21). ).

여기서, 포의 발란싱은 드럼(9)의 가속 시에 이루어지며, 드럼(9)의 내부에는 물이 고여있지 않으므로 회전속도가 105rpm에 가까워질수록 세탁물은 드럼(9)의 내측벽에 달라붙으려고 한다.Here, the balancing of the fabric is made at the acceleration of the drum (9), and since water is not accumulated inside the drum (9), the laundry is attached to the inner wall of the drum (9) as the rotation speed approaches 105 rpm. do.

그리고, 드럼(9)의 회전속도가 105rpm에 이르게되면 rpm의 변화량을 근거로 편심량을 감지하는데(S22), 상기 발란싱 과정에서 포분산이 잘 이루어져 편심량이 적을 때에는 드럼(9)의 회전이 고르게 되지만 포분산이 잘 이루어지지 않아 편심량이 커지면 드럼(9)이 진동하므로 도 4에 도시한 바와 같이 드럼(9)의 회전이 고르지 못하게 된다.When the rotational speed of the drum 9 reaches 105 rpm, the amount of eccentricity is detected based on the change amount of rpm (S22). However, when the amount of eccentricity is low due to good dispersion of the balance, the rotation of the drum 9 is uniform. Since the drum 9 vibrates when the amount of eccentricity is large due to poor dispersion, the rotation of the drum 9 becomes uneven as shown in FIG. 4.

따라서, rpm의 변화량이 설정된 기준치보다 적으면 편심량이 적은 것으로 판단하여 일정시간동안 드럼(9)을 고속으로 회전시켜 탈수하도록 하고(S25), 반대로 rpm의 변화량이 기준치보다 많으면 편심량이 많은 것으로 판단하여 드럼(9)의 회전을 일정시간동안 중지시켜(S24) 발란싱 과정을 반복 수행하여 포분산이 고르게 되도록 한다.Therefore, if the amount of change of rpm is less than the set reference value, it is determined that the amount of eccentricity is small, so that the drum 9 is rotated at high speed for a predetermined time and dehydrated (S25). On the contrary, if the amount of change of rpm is larger than the reference value, the amount of eccentricity is determined to be large. The rotation of the drum 9 is stopped for a predetermined time (S24) to repeat the balancing process to evenly distribute the podis.

그러나, 종래 드럼세탁기의 탈수 제어방법에서 포를 고르게 분산시키기 위한 발란싱 과정은 포의 위치, 상태 등에 의존하는 확률적인 현상을 이용하므로, 발란싱 및 편심량 감지의 반복 횟수의 편차가 크며 이에 따라 탈수진입까지 소요되는 시간에 있어서 큰 편차를 갖는다.However, in the conventional drum washing machine dehydration control method, the balancing process for evenly dispersing the fabric uses a stochastic phenomenon depending on the position, condition, etc. of the drum washing machine. There is a large deviation in the time required.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 안출한 것으로서, 드럼을 50rpm으로 정속 제어하면서 세탁물을 고르게 분산된 것을 감지하고, 105rpm으로 가속하여 적극적으로 발란싱함으로써, 탈수진입 시간을 줄임과 동시에 편심량을 줄여 탈수 성능을 개선시키는데 적당한 드럼세탁기의 탈수 제어방법을 제공하는데 그 목적이 있다.The present invention has been made in order to solve the above-mentioned problems, by controlling the drum at 50 rpm constant speed to detect the laundry evenly distributed, accelerated to 105 rpm to actively balance, reducing the dehydration entry time and eccentricity at the same time It is an object of the present invention to provide a dehydration control method of a drum washing machine, which is suitable for improving the dewatering performance by reducing the pressure.

도 1은 종래의 직결실 드럼세탁기중 일 예를 나타낸 종단면도1 is a longitudinal sectional view showing an example of a conventional direct-attached drum washing machine

도 2는 종래 드럼세탁기의 탈수 제어방법을 나타낸 흐름도2 is a flowchart illustrating a dehydration control method of a conventional drum washing machine.

도 3은 종래 드럼세탁기의 탈수 RPM 변화를 나타낸 그래프3 is a graph showing the dehydration RPM change of the conventional drum washing machine

도 4는 종래 드럼세탁기의 드럼 진동으로 인한 RPM 변화를 나타낸 그래프Figure 4 is a graph showing the RPM change due to the drum vibration of the conventional drum washing machine

도 5는 본 발명에 따른 드럼세탁기의 탈수 제어방법을 나타낸 흐름도5 is a flowchart illustrating a dehydration control method of the drum washing machine according to the present invention.

도 6은 본 발명에 따른 드럼세탁기의 탈수 RPM 변화를 나타낸 그래프6 is a graph showing a change in dehydration RPM of the drum washing machine according to the present invention

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

1 : 도어 2 : 가스켓1: door 2: gasket

3 : 터브 4 : 행잉 스프링3: tub 4: hanging spring

5 : 캐비닛 6 : 모터5: cabinet 6: motor

7 : 스테이터 8 : 로터7: stator 8: rotor

9 : 드럼 10 : 프릭션 댐퍼9: drum 10: friction damper

11 : 모터센서 12 : 베어링11: motor sensor 12: bearing

13 : 드럼축13: drum shaft

상기한 목적을 달성하기 위한 본 발명에 따르면, 드럼을 포붙임 속도 이하로 정속 제어하여 포분산하는 제 1 단계와; 상기 드럼의 회전속도 변화량을 검출하는 제 2 단계와; 상기 회전속도 변화량이 클 경우 상기 제 1 단계로 복귀하고 상기 회전속도 변화량이 작을 경우에는 상기 드럼을 포붙임 속도로 정속 제어하는 제 3 단계와; 포붙임 속도로 회전하는 상기 드럼의 편심량을 검출하는 제 4 단계와; 상기 편심량이 클 경우 상기 제 1 단계로 복귀하고 상기 편심량이 작을 경우에는 고속으로 회전시켜 탈수하는 제 5 단계로 이루어짐을 특징으로 한다.According to the present invention for achieving the above object, a first step of constant-dispersing the drum at a constant speed below the embedding speed; Detecting a change amount of the rotational speed of the drum; A third step of returning to the first step if the amount of change of the rotational speed is large and controlling the drum at a braking speed if the amount of change of the rotational speed is small; A fourth step of detecting the amount of eccentricity of the drum rotating at the embedding speed; If the amount of eccentricity is large, the method returns to the first step, and if the amount of eccentricity is small, it comprises a fifth step of spinning at high speed to dewater.

이하, 본 발명에 따른 드럼세탁기의 탈수 제어방법을 도면을 참조하여 설명하면 다음과 같다.Hereinafter, the dehydration control method of the drum washing machine according to the present invention will be described with reference to the drawings.

도 5은 본 발명에 따른 드럼세탁기의 탈수 제어방법을 설명하기 위한 흐름도이고, 도 6은 본 발명에 따른 드럼세탁기의 탈수 RPM 변화를 나타낸 그래프이다.5 is a flowchart illustrating a dehydration control method of a drum washing machine according to the present invention, and FIG. 6 is a graph showing a change in dehydration RPM of the drum washing machine according to the present invention.

드럼세탁기의 세탁과정은 먼저 드럼(9)내에 세탁물을 투입한 후, 원하는 세탁모드를 설정하여 세탁기를 구동시키면 드럼(9)에 물이 급수되고, 모터(3)의 구동에 의해 드럼(9)이 좌우방향으로 회전하면서 세탁이 진행된다.In the washing process of the drum washing machine, first, laundry is put into the drum (9), and then a desired washing mode is set to drive the washing machine, and water is supplied to the drum (9), and the drum (9) is driven by the motor (3). The washing proceeds while rotating in the left and right directions.

그리고, 세탁 후 세탁에 사용된 물이 외부로 배출되면 다시 급수하고 드럼(9)이 회전하면서 헹굼행정이 진행되고, 이어 헹굼행정이 완료된 후 드럼(9)을 고속으로 회전시키는 세탁물의 탈수행정이 진행된다.When the water used for washing after washing is discharged to the outside, the water is supplied again and the rinsing stroke proceeds while the drum 9 rotates. Then, after the rinsing stroke is completed, the laundry dewatering stroke for rotating the drum 9 at high speed is performed. Proceed.

이때, 탈수행정의 진입여부는 드럼(9)의 편심여부 판단 결과에 따르는데, 이는 세탁물의 편중에 의하여 드럼(9)이 기 설정된 편심량 이상으로 편심된 경우에 과도한 진동으로 소음이 발생할 뿐만 아니라, 드럼(9)의 회전축 등의 각종 장치가 파손될 우려가 있기 때문이다.At this time, whether or not to enter the dehydration operation is based on the judgment result of the eccentricity of the drum (9), which is not only noise caused by excessive vibration when the drum (9) is eccentrically more than the preset amount of eccentricity due to the laundry load, This is because various devices such as the rotating shaft of the drum 9 may be damaged.

이러한 이유로 세탁기에 편심 판단과정이 적용되는데, 본 발명에 따른 드럼세탁기에 적용된 드럼의 편심 판단과정을 설명하면 다음과 같다.For this reason, the eccentricity determination process is applied to the washing machine. The eccentricity determination process of the drum applied to the drum washing machine according to the present invention will be described as follows.

도 6에 도시한 바와 같이, 탈수행정의 진입에 앞서 먼저 드럼(9)을 50rpm의 회전속도로 일정시간동안 정속 제어하여 회전시킨다(S51).As shown in FIG. 6, the drum 9 is rotated by controlling the constant speed for a predetermined time at a rotational speed of 50 rpm before entering the dehydration stroke (S51).

이때, 50rpm의 회전속도로 회전하는 드럼(9)내의 세탁물에는 회전에 의해 발생하는 원심력보다 중력이 크게 작용하므로 세탁물을 끌어올리다가 떨어뜨리면서 고르게 분산시킨다.At this time, since the gravity acts on the laundry in the drum 9 rotating at a rotational speed of 50 rpm, the gravity is greater than the centrifugal force generated by the rotation.

그리고, 50rpm의 회전속도로 회전하는 드럼(9)의 rpm 변화를 감지하는데(S52), 상기 발란싱 과정에서 포분산이 잘 이루어지면 드럼(9)의 rpm 변화는 작고, 반대로 포분산이 잘 이루어지지 않으면 드럼(9)의 진동으로 인해 rpm의 변동이 커진다.In addition, to detect the change in rpm of the drum 9 rotating at a rotational speed of 50 rpm (S52), if the dispersion is well carried out during the balancing process, the rpm change of the drum 9 is small, on the contrary, the dispersion is not well achieved. Otherwise, the vibration of the drum 9 causes a large variation in rpm.

이어, 드럼(9)의 rpm 변화량을 설정된 기준치와 비교하여 rpm의 변화량이 크면 드럼(9)을 50rpm의 회전속도로 계속 회전시키면서 드럼(9)의 rpm의 변화를 감지하는 과정을 반복 수행함으로써 포분산이 잘 이루어지도록 한다(S53).Subsequently, if the rpm change amount of the drum 9 is large compared to the set reference value, the process of detecting the change of the rpm of the drum 9 by repeatedly rotating the drum 9 at a rotational speed of 50 rpm is repeated. Dispersion is made well (S53).

한편, rpm의 변화량이 설정된 기준치보다 작으면 포분산이 잘 이루어진 것으로 판단하여 드럼(9)의 회전으로 인하여 세탁물이 드럼(9)의 내측벽에 붙어 상기 드럼(9)과 같이 회전할 수 있는 속도로 가속시킨다(S54).On the other hand, if the amount of change of the rpm is less than the set reference value is determined that the podis dispersion was well made due to the rotation of the drum (9) attached to the inner wall of the drum (9) speed that can rotate with the drum (9) Accelerate to (S54).

이때, 보통 105rpm의 회전속도로 드럼(9)을 회전시키는데, 드럼(9) 내측벽에 세탁물을 달라붙게 한 상태에서 rpm의 변화량을 근거로 하여 편심량을 감지한다.At this time, the drum 9 is rotated at a rotational speed of 105 rpm, and the amount of eccentricity is sensed based on the change amount of rpm in the state in which the laundry adheres to the inner wall of the drum 9.

즉, 회전하는 드럼(9)의 rpm은 드럼(9)내 세탁물의 편심 정도에 따라 105rpm과의 편차를 갖는데, 그 신호파형은 피크치를 갖는 펄스 형태로 나타나며, 단위시간동안 105rpm의 레벨을 벗어나는 펄스를 감지하여 그 개수에 따라 드럼(9)내 세탁물의 편심량을 판단하게 된다.That is, the rpm of the rotating drum 9 has a deviation from 105 rpm depending on the degree of eccentricity of the laundry in the drum 9, and its signal waveform appears in the form of a pulse having a peak value. Detects the amount of eccentricity of the laundry in the drum (9) according to the number.

그리고, 편심량이 설정된 기준치보다 작으면 세탁물이 드럼(9) 내측벽에 고르게 퍼져있는 것으로 판단하여 드럼(9)을 600∼1800rpm의 회전속도로 증가시키고(S55), 세탁물이 드럼(9) 내측벽에 고르게 분포된 상태를 계속 유지하면서 전체 탈수 시간이 완료될 때까지 드럼(9)의 고속 회전을 지속한다(S56).If the eccentricity is smaller than the set reference value, it is determined that the laundry is evenly spread on the inner wall of the drum 9, and the drum 9 is increased at a rotational speed of 600 to 1800 rpm (S55), and the laundry is the inner wall of the drum 9. The high speed rotation of the drum 9 is continued until the entire dehydration time is completed while maintaining the state evenly distributed at (S56).

반대로, 편심량이 설정된 기준치보다 많으면 세탁물이 드럼(9) 내측벽에 고르게 퍼져있지 않고 뭉쳐져 있는 것으로 판단하여 드럼(9)의 회전을 일정시간동안 감속 및 중지시켰다가 상기의 발란싱 과정을 반복 수행하여 포분산이 고르게 되도록 한 뒤 탈수를 행한다(S56).On the contrary, if the amount of eccentricity is larger than the set reference value, it is determined that the laundry is not evenly spread on the inner wall of the drum 9, and the rotation of the drum 9 is reduced and stopped for a predetermined time, and then the above balancing process is repeated. After the dispersion is even, dehydration is performed (S56).

이상에서와 같이, 본 발명은 포붙임 속도 이하로 정속 제어하여 드럼내에 세탁물을 고르게 분산시킨 뒤, 포붙임 속도로 회전시킴으로써 발란싱 및 편심량 감지의 반복 횟수를 줄이도록 한 것이다.As described above, the present invention is to reduce the number of repetitions of the balancing and eccentricity detection by rotating at the speed of embedding evenly distributed laundry in the drum by controlling the speed constant below the speed of embedding.

이에 따라, 탈수진입 시간을 줄일 수 있으며, 편심량을 줄여 탈수 성능의 개선할 수 있다.Accordingly, the dehydration entry time can be reduced, and the amount of eccentricity can be reduced to improve the dehydration performance.

Claims (4)

드럼을 포붙임 속도 이하로 정속 제어하여 포분산하는 제 1 단계와;A first step of performing constant speed control of the drum at or below the embedding speed for dispersion; 상기 드럼의 회전속도 변화량을 검출하는 제 2 단계와;Detecting a change amount of the rotational speed of the drum; 상기 회전속도 변화량이 클 경우 상기 제 1 단계로 복귀하고 상기 회전속도 변화량이 작을 경우에는 상기 드럼을 포붙임 속도로 정속 제어하는 제 3 단계와;A third step of returning to the first step if the amount of change of the rotational speed is large and controlling the drum at a braking speed if the amount of change of the rotational speed is small; 포붙임 속도로 회전하는 상기 드럼의 편심량을 검출하는 제 4 단계와;A fourth step of detecting the amount of eccentricity of the drum rotating at the embedding speed; 상기 편심량이 클 경우 상기 제 1 단계로 복귀하고 상기 편심량이 작을 경우에는 고속으로 회전시켜 탈수하는 제 5 단계로 이루어짐을 특징으로 하는 드럼세탁기의 탈수 제어방법.And a fifth step of returning to the first step if the eccentricity is large and rotating to dehydration by rotating at a high speed when the eccentricity is small. 제 1 항에 있어서,The method of claim 1, 상기 제 1 단계에서 50rpm의 속도로 드럼을 회전시키는 것을 특징으로 하는 드럼세탁기의 탈수 제어방법.Dehydration control method of the drum washing machine, characterized in that for rotating the drum at a speed of 50rpm in the first step. 제 1 항에 있어서,The method of claim 1, 상기 제 3 단계에서 상기 포붙임 속도는 105rpm인 것을 특징으로 하는 드럼세탁기의 탈수 제어방법.The dehydration control method of the drum washing machine, characterized in that the lapping speed in the third step is 105rpm. 제 1 항에 있어서,The method of claim 1, 상기 제 4 단계에서 상기 편심량은 드럼의 회전속도 변화량을 이용하여 검출하는 것을 특징으로 하는 드럼세탁기의 탈수 제어방법.In the fourth step, the amount of eccentricity is detected by using a rotation speed change amount of the drum.
KR10-2001-0074942A 2001-11-29 2001-11-29 Method for controlling dehydration in drum-type washing machine KR100413467B1 (en)

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JP4308089B2 (en) 2004-06-04 2009-08-05 三洋電機株式会社 Drum washing machine
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WO2012134141A2 (en) * 2011-03-28 2012-10-04 주식회사 대우일렉트로닉스 Method for determining imbalance in drum washing machine
US20140021140A1 (en) * 2011-03-28 2014-01-23 Dongbu Daewoo Electronics Corporation Method for controlling dehydration or water removal in drum washing machine
KR20210079728A (en) 2019-12-20 2021-06-30 엘지전자 주식회사 Controlling Method of Laundry Treatment Apparatus
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