KR20050012524A - Method for controlling dehydration in drum-type washing machine - Google Patents
Method for controlling dehydration in drum-type washing machineInfo
- Publication number
- KR20050012524A KR20050012524A KR1020030051511A KR20030051511A KR20050012524A KR 20050012524 A KR20050012524 A KR 20050012524A KR 1020030051511 A KR1020030051511 A KR 1020030051511A KR 20030051511 A KR20030051511 A KR 20030051511A KR 20050012524 A KR20050012524 A KR 20050012524A
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- South Korea
- Prior art keywords
- drum
- washing machine
- dehydration
- amount
- acceleration
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Classifications
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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
- D06F33/60—Control of the 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
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
-
- 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
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
- D06F35/007—Methods for washing, rinsing or spin-drying for spin-drying only
-
- 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
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
-
- 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
- D06F2105/48—Drum speed
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
본 발명은 드럼 세탁기의 탈수 제어 방법에 관한 것으로, 포분산을 위한 가속시에 포량에 따른 최적의 가속 기울기를 적용하므로써 포분산이 최적이 되도록 한 것이다.The present invention relates to a method for controlling dehydration of a drum washing machine, and by applying an optimum acceleration slope according to the amount of foam during acceleration for foam dispersion, the foam dispersion is optimized.
따라서, 포분산이 잘 이루어지므로 탈수 진입이 용이하고 탈수 진입 시간이 단축되며 탈수시 터브 진동이 줄어드는 효과가 있다.Therefore, since the podis dispersion is made well, it is easy to enter the dehydration, the dehydration entry time is shortened, and there is an effect of reducing the vibration of the tub when dewatering.
Description
본 발명은 드럼세탁기의 탈수 제어방법에 관한 것으로 특히, 포분산이 잘 이루어져 탈수 진입이 용이하고 터브의 진동을 줄일 수 있는 드럼세탁기의 탈수 제어방법에 관한 것이다.The present invention relates to a method for controlling dehydration of a drum washing machine, and more particularly, to a method for controlling dehydration of a drum washing machine, which facilitates dewatering and facilitates dewatering entry, and reduces vibration of a tub.
일반적으로 드럼세탁기는 세제와 세탁수 및 세탁물이 드럼 내에 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, a drum washing machine is a method of washing by 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 into the drum, and there is almost no damage to the laundry and the laundry is not tangled with each other. Tapping and rubbing can have a washing effect.
도 1을 참조하여 기존의 직결식 드럼세탁기의 구성에 대하여 간략히 설명하면 다음과 같다.Referring to Figure 1 briefly described the configuration of a conventional direct type washing machine.
도 1은 기존의 직결식 드럼세탁기의 일 예를 나타낸 종단면도로서, 캐비닛(5) 내측에 터브(Tub)(3)가 설치되고, 상기 터브(3) 내측에는 드럼(9)이 설치된다.1 is a vertical cross-sectional view showing an example of a conventional direct drum washing machine, a 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)를 구성하는 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 감쇄시키기 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 is provided between the lower side of the outer circumferential surface to damp the vibration of the tub 3 generated during dehydration.
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), if 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 탈수한다.When the water used for washing after washing is discharged to the outside, the rinsing stroke proceeds, and 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.
헹굼행정이 완료되고 나면, 탈수행정이 수행된다.After the rinsing stroke is completed, the dehydrating stroke is performed.
도 2는 종래 기술에 따른 드럼 세탁기의 탈수 과정을 나타낸 순서도이다.2 is a flowchart illustrating a dehydration process of a drum washing machine according to the prior art.
탈수행정은 로터(8)와 함께 드럼(9)이 저속으로 회전하는 초기탈수와, 고속으로 회전하면서 탈수를 본격적으로 수행하는 본탈수로 나뉘어진다The dehydration stroke is divided into the initial dehydration in which the drum 9 rotates at a low speed along with the rotor 8 and the main dehydration in which the dehydration is performed in earnest while rotating at a high speed.
상기 초기탈수시에는 우선, 언발란스에 대비하여 구동시스템에 적합한 언발란스 조건을 맞추기 위해 포량감지를 실시한다(S201).In the initial dehydration, first, a quantity detection is performed to meet an unbalance condition suitable for a driving system in preparation for unbalance (S201).
상기 포량감지를 위한 방법은 상기 드럼(9)을 일정속도(약 70rpm)까지 도달시키기 위해 소요되는 시간으로 판단한다.The method for detecting the quantity of water is determined by the time required to reach the drum 9 to a constant speed (about 70 rpm).
이때, 포량이 증가하면 상대적으로 상기 일정속도 도달시간(t)이 커지기 때문에 상기 드럼(9)이 일정속도까지 도달하는데 걸리는 시간으로 포량을 판단한다.At this time, since the amount of time increases, the constant speed reaching time (t) becomes relatively large, so that the amount of time determined by the time required for the drum 9 to reach the constant speed is determined.
이어, 드럼(9)의 내부에 있는 포를 고르게 분산시키기 위하여 일정한 가속 기울기(약 +1/100ms)로 드럼(9)을 서서히 가속시킨다(202).Subsequently, the drum 9 is gradually accelerated (202) with a constant acceleration gradient (about +1/100 ms) in order to evenly distribute the cloth inside the drum 9.
포의 발란싱은 드럼(9)의 가속시에 이루어지며, 드럼(9) 내부에는 물이 고여있지 않으므로 회전속도가 108rpm에 가까워질수록 세탁물은 드럼(9)의 내측벽에 달라붙으려고 한다.Balancing of the fabric is made at the acceleration of the drum 9, and since no water is accumulated inside the drum 9, the laundry tries to stick to the inner wall of the drum 9 as the rotation speed approaches 108 rpm.
그리고, 드럼(9)의 회전속도가 108rpm에 이르게 되면 rpm의 변화량을 근거로 편심량을 감지한다(S203).When the rotational speed of the drum 9 reaches 108 rpm, the amount of eccentricity is sensed based on the change amount of rpm (S203).
이때, 상기 발란싱 과정에서 포분산이 잘 이루어져 세탁물이 드럼(9) 내벽에 고르게 퍼져 있을 경우에는 드럼(9)을 회전시킬 때 모터(6)에 일정한 힘이 걸리게 되지만, 상기 발란싱 과정에서 포분산이 잘 이루어지지 않아 세탁물이 드럼(9)내에 고르게 퍼져 있지 않고 한쪽으로 쏠리거나 뭉쳐있으면 쏠리거나 뭉쳐진 부분을 드럼리프트로 들어올리는 상태에서는 부하가 많이 걸리게 되고, 반대로 쏠리거나 뭉쳐진 부분이 내려오는 상태에서는 힘이 작게 걸리게 된다.At this time, if the laundry is distributed evenly on the inner wall of the drum 9 during the balancing process, a certain force is applied to the motor 6 when the drum 9 is rotated, but the dispersion in the balancing process If the laundry is not spread evenly in the drum (9) and is swollen or agglomerated to one side, it will take a lot of load to lift the agglomerated or agglomerated parts with the drum lift. This takes a small amount.
따라서, 세탁물이 편심되어 있을 때는 모터(6)에 부하가 일정하게 걸리지 않기 때문에 드럼(9)의 회전이 일정하지 않고 출렁거리게 되며, 이에 따라 모터의 회전을 제어하는 컨트롤러에서는 모터의 회전속도의 변화가 소정범위 이내이면 편심량이 허용범위에 속한다고 판단하고 회전속도의 변화가 소정범위 이상이면 편심량이 허용범위보다 크다고 판단하게 된다(S204).Therefore, when the laundry is eccentric, the load on the motor 6 is not constantly applied, so the rotation of the drum 9 is not constant, so that the controller is controlling the rotation of the motor. If it is within the predetermined range, it is determined that the eccentricity is within the allowable range, and if the change in the rotational speed is more than the predetermined range, it is determined that the eccentricity is larger than the allowable range (S204).
한편, 상기 소정 회전수(예 : 약 108rpm)에서 검출된 세탁물의 편심량이 허용 범위를 만족하는 것으로 판정되면, 초기탈수를 마치고 로터(8)의 회전수를 단계적으로 상승시켜 최대 속도까지 끌어올린 상태에서 본탈수를 진행한다(S205).On the other hand, if it is determined that the amount of eccentricity of the laundry detected at the predetermined rotational speed (for example, about 108 rpm) satisfies the allowable range, after the initial dehydration, the rotational speed of the rotor 8 is gradually increased to a maximum speed. In the main dehydration proceeds (S205).
이외는 달리, 소정 회전수에서 검출된 세탁물의 편심량이 허용 범위를 넘어선 것으로 판정되면 모터(6)를 일정시간동안 정지시킨(S206) 다음에 상기 스텝 202로 리턴하여 일정한 가속 기울기로 드럼을 가속시킨다.Otherwise, if it is determined that the amount of eccentricity of the laundry detected at the predetermined rotational speed exceeds the allowable range, the motor 6 is stopped for a predetermined time (S206), and then returned to the step 202 to accelerate the drum at a constant acceleration slope. .
이때, 상기 가속 기울기는 포량에 관계없이 일정한 값이 된다.At this time, the acceleration slope becomes a constant value regardless of the amount of the dose.
그러나, 기존의 드럼세탁기에 있어서의 탈수 제어 방법에는 다음과 같은 문제점이 있다.However, the dehydration control method in the conventional drum washing machine has the following problems.
종래 기술에서는 발란싱 과정에서 포량에 관계없이 일정한 가속 기울기로 드럼(9)을 가속시키고 있다.In the prior art, in the balancing process, the drum 9 is accelerated by a constant acceleration gradient regardless of the quantity.
이렇게 포량에 관계없이 가속 기울기가 동일하면 포량에 따라 포분산 정도가 달라지며 포분산이 잘 안되게 된다.In this way, if the acceleration slope is the same regardless of the amount of dispersion, the degree of dispersion varies according to the amount of discharge, and the dispersion is not good.
이와 같이 포분산이 잘 안되면 본탈수 진입이 어렵고 이에 따라 탈수 진입시간이 길어지며, 진입하더라도 터브(9) 진동이 커지게 된다.In this way, if the dispersion is not good, it is difficult to enter the main dehydration and thus the dehydration entry time is long, even if the tub 9 vibration is increased.
본 발명은 상기한 바와 같은 문제점들을 해결하기 위하여 안출한 것으로 포분산이 잘되도록 하여 탈수 진입시간을 줄일 수 있으며, 탈수시 터브 진동을 줄일수 있는 드럼세탁기의 탈수 제어방법을 제공하는데 그 목적이 있다.The present invention has been made in order to solve the problems described above to reduce the dewatering entry time by making the podis dispersion well, and to provide a dehydration control method of the drum washing machine that can reduce the tub vibration when dewatering. .
도 1은 일반적인 드럼 세탁기의 내부 구성도1 is an internal configuration diagram of a typical drum washing machine
도 2는 종래 기술에 따른 드럼 세탁기의 탈수 과정을 나타낸 순서도2 is a flowchart illustrating a dehydration process of a drum washing machine according to the prior art.
도 3은 본 발명에 따른 드럼 세탁기의 탈수 과정을 나타낸 순서도3 is a flowchart illustrating a dehydration process of the drum washing machine according to the present invention.
도 4는 본 발명에 따른 드럼 세탁기의 탈수 rpm을 나타낸 그래프Figure 4 is a graph showing the dehydration rpm of the drum washing machine according to the present invention
**도면의 주요 부분에 대한 부호 설명**** Description of the symbols for the 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
본 발명에 따른 드럼세탁기의 탈수 제어방법은 편심 감지를 위해 드럼을 포붙임 속도까지 가속시킬 때에, 상기 드럼내의 포량에 따라서 가속 기울기를 다르게 제어하는 것을 특징으로 한다.The dehydration control method of the drum washing machine according to the present invention is characterized in that when the drum is accelerated to the embedding speed for eccentricity detection, the acceleration inclination is controlled differently according to the amount of the drum.
바람직하게, 상기 가속 기울기는 해당 포량에서 포분산 효과를 최대화시킬 수 있는 수치인 것을 특징으로 한다.Preferably, the acceleration slope is characterized in that the numerical value which can maximize the effect of dispersal at the corresponding dose.
그리고, 본 발명에 따른 드럼 세탁기의 탈수 제어방법은 포량을 감지하는 제 1 단계와, 현재의 포량에 따라 결정되는 가속 기울기로 드럼을 가속시키는 제 2 단계와, 포붙임 속도로 회전하는 드럼의 편심량을 측정하는 제 3 단계와, 상기 편심량이 기준치보다 작을 경우 고속으로 회전시켜 탈수하고 편심량이 기준치보다 클 경우에는 모터를 일정시간 정지시킨 후에 상기 제 2 단계로 복귀하는 제 4 단계로 이루어짐을 특징으로 한다.In addition, the dewatering control method of the drum washing machine according to the present invention includes a first step of detecting a quantity of water, a second step of accelerating the drum at an acceleration slope determined according to the current amount of quantity, and an amount of eccentricity of the drum rotating at the embedding speed. And a fourth step of dehydrating by rotating at high speed when the eccentricity is smaller than the reference value, and the fourth step of returning to the second step after stopping the motor for a predetermined time when the eccentricity is larger than the reference value. do.
바람직하게, 상기 제 2 단계에서 가속 기울기는 해당 포량에서 포분산 효과를 최대화시킬 수 있는 수치인 것을 특징으로 한다.Preferably, the acceleration slope in the second step is characterized in that the numerical value capable of maximizing the dispersion effect at the corresponding dose.
바람직하게, 상기 제 2 단계로 복귀한 후에 초기 제 2 단계에서의 가속 기울기와 다른 가속 기울기를 이용하는 것을 특징으로 한다.Preferably, after the return to the second step, the acceleration slope different from the acceleration slope in the initial second stage is used.
본 발명의 다른 목적, 특징 및 이점들은 첨부한 도면을 참조한 실시예들의 상세한 설명을 통해 명백해 질 것이다.Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
도 3은 본 발명에 따른 드럼 세탁기의 탈수 과정을 나타낸 순서도이고, 도 4는 본 발명에 따른 드럼 세탁기의 탈수 rpm을 나타낸 그래프이다.3 is a flowchart illustrating a dehydration process of the drum washing machine according to the present invention, Figure 4 is a graph showing the 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)의 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). 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.
탈수행정은 로터(8)와 함께 드럼(9)이 저속으로 회전하는 초기탈수와, 고속으로 회전하면서 탈수를 본격적으로 수행하는 본탈수로 나뉘어진다The dehydration stroke is divided into the initial dehydration in which the drum 9 rotates at a low speed along with the rotor 8 and the main dehydration in which the dehydration is performed in earnest while rotating at a high speed.
상기 초기탈수시에는 도 4에 도시된 바와 같이 우선, 언발란스에 대비하여 구동시스템에 적합한 언발란스 조건을 맞추기 위해 포량감지를 실시한다(S301).In the initial dehydration, as illustrated in FIG. 4, first, a capacity detection is performed to meet an unbalance condition suitable for a driving system in preparation for unbalance (S301).
상기 포량감지를 위한 방법은 상기 드럼(9)을 일정속도(약 70rpm)까지 도달시키기 위해 소요되는 시간으로 판단한다.The method for detecting the quantity of water is determined by the time required to reach the drum 9 to a constant speed (about 70 rpm).
이때, 포량이 증가하면 상대적으로 상기 일정속도 도달시간(t)이 커지기 때문에 상기 드럼(9)이 일정속도까지 도달하는데 걸리는 시간으로 포량을 판단한다.At this time, since the amount of time increases, the constant speed reaching time (t) becomes relatively large, so that the amount of time determined by the time required for the drum 9 to reach the constant speed is determined.
이어, 드럼(9)의 내부에 있는 포를 고르게 분산시키기 위하여 상기 감지된 포량에 따라 결정되는 가속 기울기로 드럼(9)을 포붙임 속도까지 서서히 가속시킨다(S302).Subsequently, in order to evenly distribute the cloth inside the drum 9, the drum 9 is gradually accelerated to the embedding speed at an acceleration slope determined according to the sensed amount of water (S302).
포의 발란싱은 드럼(9)의 가속시에 이루어지는데, 포량에 따라서 최대의 포분산 효과를 내는 가속 기울기가 다르다.Balancing of the fabric is carried out at the acceleration of the drum 9, and the acceleration inclination, which produces the maximum foaming effect, differs depending on the quantity of foam.
이에 본 발명에서는 포량별에 따른 최적의 가속 기울기를 적용하여 포분산 효율을 향상시키고자 하고자 한다.Therefore, in the present invention, it is intended to improve the efficiency of dispersal by applying the optimum acceleration slope according to the amount of each discharge.
다음 표 1은 포량에 따른 가속 기울기를 나타낸 표이다.The following Table 1 shows the acceleration slope according to the amount of discharge.
포 발란싱을 위한 드럼(9) 가속시 포분산 효과를 극대화시키기 위하여 포량에 따라서 가속 기울기를 달리 적용하였음을 확인할 수 있다.It can be seen that the acceleration inclination was applied differently according to the amount of foam in order to maximize the effect of foam dispersion during acceleration of the drum 9 for gun balancing.
이때, 포량이 70이하의 소량인 경우를 보면, 1/160ms, 1/190ms의 서로 다른 2개의 가속 기울기를 교대로 수행하고 있다.In this case, when the amount of the small amount is less than 70, two different acceleration gradients of 1/160 ms and 1/190 ms are alternately performed.
즉, 도 4에서와 같이 하나의 포량에서 서로 다른 가속 기울기를 교대로 수행하면 포분산 효과를 더욱 증가시킬 수 있다.That is, as shown in FIG. 4, if different acceleration slopes are alternately performed in one dose, the dispersion effect may be further increased.
이후, 드럼(9)의 회전속도가 포붙임 속도인 108rpm에 이르게 되면 rpm의 변화량을 근거로 편심량을 감지한다(S303).Thereafter, when the rotational speed of the drum 9 reaches 108 rpm, which is the embedding speed, the amount of eccentricity is sensed based on the change amount of the rpm (S303).
이때, 상기 발란싱 과정에서 포분산이 잘 이루어져 세탁물이 드럼(9) 내벽에 고르게 퍼져 있을 경우에는 드럼(9)을 회전시킬 때 모터(6)에 일정한 힘이 걸리게 되지만, 상기 발란싱 과정에서 포분산이 잘 이루어지지 않아 세탁물이 드럼(9)내에 고르게 퍼져 있지 않고 한쪽으로 쏠리거나 뭉쳐있으면 쏠리거나 뭉쳐진 부분을 드럼리프트로 들어올리는 상태에서는 부하가 많이 걸리게 되고, 반대로 쏠리거나 뭉쳐진 부분이 내려오는 상태에서는 힘이 작게 걸리게 된다.At this time, if the laundry is distributed evenly on the inner wall of the drum 9 during the balancing process, a certain force is applied to the motor 6 when the drum 9 is rotated, but the dispersion in the balancing process If the laundry is not spread evenly in the drum (9) and is swollen or agglomerated to one side, it will take a lot of load to lift the agglomerated or agglomerated parts with the drum lift. This takes a small amount.
따라서, 세탁물이 편심되어 있을 때는 모터(6)에 부하가 일정하게 걸리지 않기 때문에 드럼(9)의 회전이 일정하지 않고 출렁거리게 되며, 이에 따라 모터의 회전을 제어하는 컨트롤러에서는 모터의 회전속도의 변화가 소정범위 이내이면 편심량이 허용범위에 속한다고 판단하고 회전속도의 변화가 소정범위 이상이면 편심량이 허용범위보다 크다고 판단하게 된다(S304).Therefore, when the laundry is eccentric, the load on the motor 6 is not constantly applied, so the rotation of the drum 9 is not constant, so that the controller is controlling the rotation of the motor. If it is within the predetermined range, it is determined that the eccentricity is within the allowable range, and if the change in the rotational speed is more than the predetermined range, it is determined that the eccentricity is larger than the allowable range (S304).
한편, 소정 회전수에서 검출된 세탁물의 편심량이 허용 범위를 넘어선 것으로 판정되면 모터(6)를 일정시간동안 중지시킨 다음에 상기 스텝 302로 리턴하여 포량에 따라서 결정되는 가속 기울기로 드럼(9)을 서서히 가속시킨다.On the other hand, if it is determined that the amount of eccentricity of the laundry detected at the predetermined rotational speed exceeds the allowable range, the motor 6 is stopped for a predetermined time, and then returned to the step 302 to move the drum 9 at an acceleration inclination determined according to the amount of load. Accelerate slowly.
반면, 검출된 세탁물의 편심량이 허용 범위를 만족하는 것으로 판정되면, 초기탈수를 마치고 로터(8)의 회전수를 단계적으로 상승시켜 최대 속도까지 끌어올린 상태에서 본탈수를 진행한다(S305).On the other hand, if it is determined that the detected amount of eccentricity of the laundry satisfies the allowable range, after the initial dehydration, the dehydration proceeds in the state in which the rotational speed of the rotor 8 is gradually increased to the maximum speed (S305).
이때, 상기 발란싱 과정에서 포량에 따라 가속 기울기를 달리하여 포분산 효과를 최대화시켰기 때문에 편심량이 허용 범위를 넘어섬에 따라 스텝 302로 리턴하는 횟수가 줄어들게 되어 본탈수로 진입이 용이하고 본탈수 진입 시간이 단축된다.At this time, since the angular dispersion is maximized by varying the acceleration slope in accordance with the amount of baling in the balancing process, as the eccentricity exceeds the allowable range, the number of times to return to step 302 is reduced, making it easier to enter the main dewatering and entering the main dewatering time. This is shortened.
이상으로 본 발명에 따른 드럼세탁기의 탈수행정을 완료한다.This completes the dehydration operation of the drum washing machine according to the present invention.
상기에서와 같이, 본 발명은 포분산을 위한 가속시에 포량에 따른 최적의 가속 기울기를 적용하므로써 포분산이 최적이 되도록 한 것이다.As described above, the present invention is to optimize the dispersion by applying the optimum acceleration slope according to the amount of acceleration during acceleration for foam dispersion.
따라서, 포분산이 잘 이루어지므로 탈수 진입이 용이하고 탈수 진입 시간이 단축되며 탈수시 터브 진동이 줄어들게 된다.Therefore, since the podis dispersion is made well, dewatering entry is easy, dewatering entry time is shortened, and tub vibration is reduced when dewatering.
이상 설명한 내용을 통해 당업자라면 본 발명의 기술 사상을 이탈하지 아니하는 범위에서 다양한 변경 및 수정이 가능함을 알 수 있을 것이다.Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.
따라서, 본 발명의 기술적 범위는 실시예에 기재된 내용으로 한정하는 것이 아니라 특허 청구범위에 의해서 정해져야 한다.Therefore, the technical scope of the present invention should not be limited to the contents described in the examples, but should be defined by the claims.
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