KR101295359B1 - Vibration decreasing apparatus of drum type washer and method thereof - Google Patents

Vibration decreasing apparatus of drum type washer and method thereof Download PDF

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KR101295359B1
KR101295359B1 KR1020060104552A KR20060104552A KR101295359B1 KR 101295359 B1 KR101295359 B1 KR 101295359B1 KR 1020060104552 A KR1020060104552 A KR 1020060104552A KR 20060104552 A KR20060104552 A KR 20060104552A KR 101295359 B1 KR101295359 B1 KR 101295359B1
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vibration
drum
tub
washing machine
rotational speed
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KR1020060104552A
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Korean (ko)
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KR20080037416A (en
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나규성
고홍석
최승주
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삼성전자주식회사
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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
    • D06F34/16—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
    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • 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
    • D06F37/26—Casings; Tubs
    • D06F37/265—Counterweights mounted to the tub; Mountings therefor
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/125—Supporting arrangements for the casing, e.g. rollers or legs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
    • F16F15/36—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved
    • F16F15/363—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved using rolling bodies, e.g. balls free to move in a circumferential direction
    • 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—Imbalance; Noise level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

본 발명은 드럼세탁기의 진동 저감 장치 및 방법에 관한 것으로, 본 발명의 목적은 터브의 과대 진동을 감소시키고 드럼세탁기의 제조비용을 절감할 수 있는 드럼세탁기의 진동 저감 장치 및 방법을 제공함에 있다.The present invention relates to an apparatus and method for reducing vibration of a drum washing machine, and an object of the present invention is to provide an apparatus and method for reducing a vibration of a drum washing machine, which can reduce excessive vibration of a tub and reduce the manufacturing cost of the drum washing machine.

이를 위해 본 발명은 볼 밸런서를 채용하는 드럼세탁기의 진동 저감 방법에 있어서, 탈수 동작 시, 터브 과대 진동발생 이전의 시점에서 상기 드럼을 일정 회전속도로 일정시간 유지하도록 하고, 진동감지수단에서 감지한 터브의 진동주파수를 통해 상기 드럼의 재상승시점을 판단하여 상기 드럼의 재상승시점이 되면 상기 드럼의 회전속도를 재상승시켜 상기 터브의 과대 진동이 감소되도록 제어한다.To this end, the present invention in the vibration washing method of the drum washing machine employing a ball balancer, during the dehydration operation, to maintain the drum at a constant rotational speed for a predetermined time at the time before the excessive vibration of the tub, and detected by the vibration sensing means When the drum re-elevation time is determined based on the vibration frequency of the tub, the rotational speed of the drum is increased again to control the excessive vibration of the tub.

Description

드럼세탁기의 진동 저감 장치 및 방법{Vibration decreasing apparatus of drum type washer and method thereof}Vibration reducing apparatus and drum type washer and method

도 1은 본 발명의 바람직한 실시예에 따른 드럼세탁기의 진동 저감 장치의 종단면도이다.1 is a longitudinal sectional view of the vibration reduction device of the drum washing machine according to a preferred embodiment of the present invention.

도 2는 본 발명의 실시예에서 드럼과 볼의 속도차이를 보인 예시도이다. Figure 2 is an exemplary view showing a speed difference between the drum and the ball in the embodiment of the present invention.

도 3은 본 발명의 바람직한 실시예에 따른 드럼세탁기의 진동을 저감하는 과정을 설명하기 위한 제어흐름도이다.3 is a control flowchart illustrating a process of reducing vibration of a drum washing machine according to a preferred embodiment of the present invention.

도 4는 본 발명의 실시예에서 드럼과 볼의 속도차이에 의한 진동발생을 보인 예시도이다.Figure 4 is an exemplary view showing the vibration generated by the speed difference between the drum and the ball in the embodiment of the present invention.

도 5는 본 발명의 실시예에서 터브 진동과 볼 위치의 상관관계를 보인 예시도이다.5 is an exemplary view showing a correlation between the tub vibration and the ball position in an embodiment of the present invention.

*도면의 주요부분에 대한 부호 설명*Description of the Related Art [0002]

100...드럼세탁기의 진동 저감 장치 Vibration reduction device of drum washing machine

110...터브 120...드럼110.Tub 120.Drum

130...볼 140...진동감지수단130 Ball 140 Vibration sensing means

150...연결호스 160...급수밸브150 ... Connection hose 160 ... Water supply valve

170...배수관 180...세탁물170 Drainage 180 Laundry

본 발명은 드럼세탁기에 관한 것으로, 보다 상세하게는 볼 밸런서(ball balancer)를 채용한 세탁기에 있어서, 탈수 동작 시 볼 밸런서를 제어하여 세탁물의 편심에 의해 발생되는 터브의 과대 진동을 감소시키는 드럼세탁기의 진동 저감 장치 및 방법에 관한 것이다.The present invention relates to a drum washing machine, and more particularly, in a washing machine employing a ball balancer, a drum washing machine which reduces excessive vibration of a tub generated by eccentricity of laundry by controlling the ball balancer during dehydration operation. It relates to a vibration reduction device and method of the present invention.

일반적으로 드럼세탁기는 드럼이 회전할 때 발생하는 세탁물 및 세탁수의 낙차를 이용하여 세탁물이 세탁되도록 마련된 장치로서, 세제와 세탁수 및 세탁물이 상기 드럼 내에 투입된 상태에서 모터의 구동력을 전달받아 회전하는 드럼을 통해 세탁물의 마찰력을 이용하여 세탁을 행하는 방식으로 구성된다.In general, a drum washing machine is a device provided to wash laundry using a drop of laundry and washing water generated when a drum rotates. The drum washing machine rotates by receiving a driving force of a motor while detergent and washing water and laundry are put into the drum. It is configured in such a way that washing is performed using the friction force of the laundry through the drum.

상기와 같은 드럼세탁기는 세탁물의 손상이 거의 없고, 세탁물이 서로 엉키지 않으며, 두드리고 비벼빠는 세탁효과를 낼 수 있으나 탈수하는 과정에서 세탁물의 편심에 의하여 심한 진동과 소음이 발생되기 때문에 드럼의 전, 후방에 레이스를 설치하고 상기 레이스안에 볼을 장착함으로써 편심을 방지하는 볼 밸런싱 방식을 채용하였다.Drum washing machine as described above has almost no damage to the laundry, the laundry is not tangled with each other, pounding and rubbing can have a laundry effect, but because of the vibration and noise generated by the eccentric laundry in the process of dehydration before and after the drum A ball balancing method was adopted to prevent eccentricity by installing a race and mounting a ball in the race.

상기와 같은 볼 밸런싱 방식은 상기 터브와 볼의 회전속도의 차이로 인하여일정한 회전수에서 상기 터브가 순간적으로 과대 진동하는 공진점이 발생하기 때문에 상기 공진점이 발생하는 밸런싱 위치에 도달하기 전에 두 개 이상의 레이스의 볼들이 서로 위상차를 가지고 운동하게 하여 세탁물 및 볼에 의해 유발되는 언발란 스를 서로 상쇄하도록 하여 과대 진동을 방지하고 있다.In the ball balancing method as described above, two or more races before reaching the balancing position at which the resonance point occurs because the resonance point in which the tub temporarily vibrates excessively at a predetermined rotational speed due to the difference in the rotational speed of the tub and the ball. To prevent excessive vibration by letting the balls move in phase with each other to offset the unbalance caused by the laundry and the balls.

그러나, 상기와 같은 볼 밸런싱 방식은 상기 볼의 크기(Size) 및 상기 레이스의 점도 등이 다른 2개 이상의 레이스를 설치하기 때문에 드럼세탁기의 제조비용이 많이 드는 문제점이 있었다.However, the ball balancing method as described above has a problem in that the manufacturing cost of the drum washing machine is high because two or more races having different sizes and viscosities of the balls are installed.

또한, 상기 터브의 과대한 진동을 방지하기 위한 방법이 정확한 계산에 의해 측정된 것이 아니라 확률적으로 발생 가능성을 줄이도록 구성된 것이므로 상기 터브의 과대 진동을 더욱 줄이기 위해서는 많은 레이스를 사용하여야 한다는 문제점이 있었다. In addition, since the method for preventing excessive vibration of the tub is not measured by accurate calculation but is configured to reduce the probability of occurrence, there is a problem that many races should be used to further reduce the excessive vibration of the tub. .

따라서, 본 발명은 상술한 문제점을 해결하기 위하여 창안된 것으로, 볼 밸런서를 제어하여 세탁물의 편심에 의해 발생되는 터브의 과대 진동을 감소시킬 뿐만 아니라 드럼세탁기의 제조비용이 절감되도록 그 구조를 개선한 드럼세탁기의 진동 저감 장치 및 방법을 제공하는데 그 목적이 있다.Therefore, the present invention was devised to solve the above-mentioned problems, and by controlling the ball balancer to reduce the excessive vibration of the tub caused by the eccentricity of the laundry as well as to improve the structure of the drum washing machine to reduce the manufacturing cost It is an object of the present invention to provide an apparatus and method for reducing vibration of a drum washing machine.

본 발명의 다른 목적 및 장점들은 하기에 설명될 것이며, 본 발명의 실시예에 의해 알게 될 것이다. 또한, 본 발명의 목적 및 장점들은 특허청구범위에 나타낸 수단 및 조합에 의해 실현될 수 있다.Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

상기와 같은 목적을 달성하기 위한 본 발명은 볼 밸런서를 채용하는 드럼세탁기의 진동 저감 방법에 있어서, 탈수 동작 시, 터브 과대 진동발생 이전의 시점에서 상기 드럼을 일정 회전속도로 일정시간 유지하도록 하고, 진동감지수단에서 감지한 터브의 진동주파수를 통해 상기 드럼의 재상승시점을 판단하여 상기 드럼의 재상승시점이 되면 상기 드럼의 회전속도를 재상승시켜 상기 터브의 과대 진동이 감소되도록 제어하는 것을 특징으로 한다.The present invention for achieving the above object in the vibration reduction method of the drum washing machine employing a ball balancer, during the dehydration operation to maintain the drum at a constant rotational speed for a predetermined time at the time point before the excessive vibration of the tub, It is characterized by controlling the vibration of the tub is detected by the vibration detection means by the vibration sensing means to increase the drum's rotational speed by re-raising the drum's rotational speed when the drum's re-raising time.

여기서, 상기 터브 과대 진동발생 이전의 시점은 상기 드럼의 회전속도가 기설정 저장된 회전속도에 도달하는 시점인 것을 특징으로 한다.Here, the time point before the excessive vibration of the tub is characterized in that the rotational speed of the drum reaches a preset stored rotational speed.

한편, 상기 드럼의 재상승 시점은 볼과 세탁물의 위상 차이를 검출하여 더 판단하는 것을 특징으로 한다.On the other hand, the rise time of the drum is characterized by further determining by detecting the phase difference of the ball and the laundry.

또한, 볼 밸런서를 채용하는 드럼세탁기에 있어서, 탈수 동작 시, 터브의 진동주파수를 감지하는 진동감지수단; 및 터브 과대진동발생 이전의 시점에서 상기 드럼이 일정 회전속도로 일정시간 유지하도록 하고, 상기 진동감지수단에서 감지한 상기 터브의 진동주파수를 통해 드럼의 재상승 시점을 판단하여 재상승 시점이 되면 상기 드럼의 회전속도를 재상승시켜 상기 터브의 진동이 감소되도록 제어하는 구동제어수단을 포함하는 것을 특징으로 한다.In addition, a drum washing machine employing a ball balancer, Vibration sensing means for sensing the vibration frequency of the tub during the dehydration operation; And maintaining the drum at a predetermined rotational speed for a predetermined time at the time before the excessive vibration of the tub, and determining the re-uptime of the drum through the vibration frequency of the tub detected by the vibration sensing means. And driving control means for controlling the vibration of the tub to be reduced by increasing the rotation speed again.

또한, 상기 진동감지수단은 가속도센서인 것을 특징으로 한다.In addition, the vibration detecting means is characterized in that the acceleration sensor.

이하, 첨부된 도면을 참조하면서 본 발명의 바람직한 실시예를 상세히 설명하기로 한다. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

먼저, 도 1은 본 발명의 바람직한 실시예에 따른 드럼세탁기의 진동 저감 장치의 종단면도로서, 본 발명의 바람직한 실시예에 따른 드럼세탁기의 진동 저감 장치(100)는 진동감지수단(140) 및 구동제어수단(미도시)을 포함한다.First, Figure 1 is a longitudinal cross-sectional view of the vibration reduction device of the drum washing machine according to a preferred embodiment of the present invention, the vibration reduction device 100 of the drum washing machine according to a preferred embodiment of the present invention is a vibration sensing means 140 and driving Control means (not shown).

본 발명에 따른 드럼세탁기의 진동 저감 장치를 설명하기에 앞서 상기 드럼 세탁기는 탈수 동작을 수행할 시, 상기 터브(110) 내부의 드럼(120) 후방에 세탁물이 한쪽으로 몰려 진동과 소음이 발생되기 전에 균형을 잡아주기 위한 볼 밸런서를 구비하게 되는데, 이때, 상기 드럼(120)이 회전을 하게 되면 상기 볼(130)도 상기 드럼(120)의 회전에 따라 같이 회전하게 된다.Prior to explaining the vibration reduction device of the drum washing machine according to the present invention, when the drum washing machine performs a dehydration operation, laundry and vibration are generated on one side of the drum 120 inside the tub 110 to generate vibration and noise. Before the balance is provided with a ball balancer, when the drum 120 is rotated, the ball 130 is also rotated in accordance with the rotation of the drum 120.

그러나, 도 2에 도시한 바와 같이 탈수 동작을 수행하기 위해 고속으로 회전하게 되면 드럼 회전속도(RPM1)와 볼 회전속도(RPM2)는 속도차이가 발생하며, 이로 인해 변조현상에 의한 진동 주파수가 발생한다.However, when rotating at a high speed to perform the dehydration operation as shown in Figure 2, the speed difference between the drum rotational speed (RPM1) and the ball rotational speed (RPM2) occurs, resulting in a vibration frequency due to the modulation phenomenon do.

또한, 상기 볼(130)의 위상이 상기 세탁물(180)의 위상과 같으면 언밸런스에 의해 상기 진동 주파수가 크게 발생하고 상기 볼(130)의 위상이 상기 세탁물(180)의 위상과 반대의 방향이면 밸런스에 의해 상기 진동주파수가 작게 발생한다. In addition, if the phase of the ball 130 is the same as the phase of the laundry 180, the vibration frequency is generated largely due to unbalance, and if the phase of the ball 130 is in the opposite direction to the phase of the laundry 180, the balance This causes the vibration frequency to be small.

즉, 탈수로 진입하는 과정에서 상기 드럼(120)과 볼(130)의 회전속도 차이 및 상기 볼(130)과 세탁물(180)의 위상차이로 인하여 일정 회전속도(예를 들면, 250RPM~300RPM)에서 상기 터브(110)가 순간적으로 과대 진동하는 지점 즉 진동 주파수가 최대인 지점이 발생하게 된다.That is, due to the difference in the rotational speed of the drum 120 and the ball 130 and the phase difference between the ball 130 and the laundry 180 in the process of entering the dehydration (for example, 250RPM ~ 300RPM) In the tub 110 instantaneously excessively vibrating point, that is, the point where the vibration frequency is the maximum occurs.

따라서, 본 발명은 상기 드럼의 회전속도(RPM1)와 볼의 회전속도(RPM2) 차이로 인해 발생되는 진동 주파수가 최저치가 될 수 있도록 상기 터브의 과대 진동발생시점을 통과하도록 한다.Therefore, the present invention allows the vibration frequency generated by the difference between the rotational speed (RPM1) of the drum and the rotational speed (RPM2) of the ball to pass through the time of occurrence of excessive vibration of the tub.

우선, 상기 진동감지수단(140)에 대해 설명하면, 상기 진동감지수단(140)은 상기 터브(110)의 진동주파수를 감지한다.First, the vibration sensing means 140, the vibration sensing means 140 detects the vibration frequency of the tub 110.

여기서, 상기 진동주파수는 상기 드럼(120)의 회전속도와 상기 볼(130)의 회 전속도의 차이에 의해 발생하는 주파수로서 상기와 같은 진동을 감지하기 위한 수단으로 드럼세탁기 내부의 일정영역에 설치되어 상기 드럼(120)과의 거리변화에 따라 일정신호를 출력하는 센서 등이 존재할 수 있다.Here, the vibration frequency is a frequency generated by the difference between the rotational speed of the drum 120 and the rotational speed of the ball 130 is installed in a predetermined region of the drum washing machine as a means for detecting the vibration as described above. There may be a sensor for outputting a predetermined signal in accordance with the change in distance with the drum (120).

다음으로, 상기 구동제어수단은 터브 과대진동발생 이전의 시점 즉, 상기 드럼(120)의 회전속도가 기설정 저장된 회전속도에 도달하면 상기 드럼(120)을 일정 회전속도로 일정시간 유지하도록 하고, 상기 진동감지수단(140)에서 감지한 상기 터브의 진동주파수를 통해 드럼의 재상승 시점을 판단하여 재상승 시점이 되면 상기 드럼의 회전속도를 재상승시켜 상기 터브의 진동이 감소되도록 제어한다.Next, the drive control means to maintain the drum 120 at a predetermined rotation speed for a predetermined time when the time before the tub excessive vibration occurs, that is, the rotation speed of the drum 120 reaches a preset stored rotation speed, When the re-rise time is determined by determining the re-raising time of the drum through the vibration frequency of the tub sensed by the vibration detecting means 140, the revolving speed of the drum is re-raised to control the vibration of the tub to be reduced.

이하에서는 상기와 같은 과대 진동발생시점을 통과하기 위한 동작 과정을 설명하도록 한다.Hereinafter, an operation process for passing the excessive vibration point as described above will be described.

도 3은 본 발명의 바람직한 실시예에 따른 드럼세탁기의 진동을 저감하는 과정을 설명하기 위한 제어흐름도로서, 탈수가 동작되는 시점인지 판단(S300)하여 탈수 시, 상기 터브 과대진동발생 이전의 시점 즉, 상기 드럼(120)의 회전속도가 기설정 저장된 회전속도에 도달하면 상기 드럼(120)을 일정 회전속도로 일정시간 유지하도록 제어한다(S310). 3 is a control flowchart for explaining a process of reducing vibration of a drum washing machine according to a preferred embodiment of the present invention. When the rotational speed of the drum 120 reaches a preset stored rotational speed, the drum 120 is controlled to be maintained at a predetermined rotational speed for a predetermined time (S310).

예를 들어, 기설정 저장된 드럼의 회전속도가 160rpm이라면, 탈수 동작 시, 상기 드럼의 회전속도가 160rpm에 도달하면 상기 드럼을 160rpm의 회전속도로 40초 동안 유지하도록 제어한다.For example, if the rotation speed of the preset stored drum is 160 rpm, during the dehydration operation, if the drum speed reaches 160 rpm, the drum is controlled to be maintained at the rotation speed of 160 rpm for 40 seconds.

상기와 같이 드럼(120)이 일정 회전속도로 일정 시간 유지되도록 제어함으로써 상기 진동이 규정치를 초과하지 않도록 할 수 있을 뿐만 아니라 상기 드럼(120) 과 볼(130)의 속도차이에 의한 변조 현상을 용이하게 관찰할 수 있게 된다. As described above, by controlling the drum 120 to be maintained at a constant rotational speed for a predetermined time, the vibration may not only exceed a prescribed value, but also easily modulate due to a speed difference between the drum 120 and the ball 130. Can be observed.

다음으로, 도 4는 본 발명의 실시예에서 터브 진동과 볼 위치의 상관관계를 보인 예시도로서, 상기 드럼(120)이 일정 회전속도로 일정시간 유지되는 동안 상기 진동감지수단(140)에서 감지한 상기 터브(110)의 진동주파수를 통해 상기 진동주파수가 최저치가 되도록 상기 드럼(120)의 재상승 시점을 판단(S320)하고, 상기 드럼(120)의 재상승 시점이 되면 상기 드럼(120)의 회전속도를 재상승시켜 상기 터브(110)의 진동이 감소되도록 제어한다(S330).Next, Figure 4 is an exemplary view showing the relationship between the vibration of the tub and the ball position in the embodiment of the present invention, the drum 120 is detected by the vibration detecting means 140 while being maintained at a constant rotational speed for a certain time Determination of the re-raising time of the drum 120 through the vibration frequency of the tub 110 is determined to be the minimum value (S320), and when the re-raising time of the drum 120 reaches the rotation of the drum 120 The speed is increased again to control the vibration of the tub 110 to be reduced (S330).

여기서, 상기 재상승 시점은 상기 진동감지수단(140)에서 감지한 상기 터브(110)의 진동주파수가 최저치가 되도록 상기 재상승 시점의 시간을 계산하여 상기 재상승 시점을 판단하는 방법이 바람직하다.Here, the re-rise time is preferably a method for determining the re-rise time by calculating the time of the re-rise time so that the vibration frequency of the tub 110 detected by the vibration detecting means 140 is the minimum value.

보다 구체적으로 설명하면, 도 5는 본 발명의 실시예에서 터브 진동과 볼 위치의 상관관계를 보인 예시도로서, 상기 볼(130)의 위상을 지속적으로 검출하여 상기 볼(130)의 위상이 어떠한 일정 시점에 이르면 상기 드럼(120)의 회전속도를 증가시켜 상기 볼(130)의 위상이 세탁물(180)의 위상과 반대 방향에 위치하도록 제어함으로써 상기 터브 과대 진동발생지점(A)을 통과하도록 한다. More specifically, Figure 5 is an exemplary view showing the relationship between the vibration of the tub and the ball position in the embodiment of the present invention, by continuously detecting the phase of the ball 130 is a phase of the ball 130 When the predetermined time point is reached, the rotation speed of the drum 120 is increased to control the phase of the ball 130 to be in a direction opposite to the phase of the laundry 180 so as to pass through the tub excessive vibration generating point A. .

상기 진동감지수단(140)은 가속도센서인 것이 바람직하며, 상기와 같은 가속도센서를 이용하여 상기 드럼과 볼의 회전속도 변화를 감지한다.The vibration detecting means 140 is preferably an acceleration sensor, and detects a change in the rotational speed of the drum and the ball using the acceleration sensor as described above.

또한, 고속의 회전속도로 탈수 동작을 수행할 시, 상기 진동주파수가 기준치보다 높게 감지되면 상기 드럼(120)의 최대 회전속도를 감소시킬 수 있다.In addition, when performing the dehydration operation at a high rotational speed, the maximum rotational speed of the drum 120 can be reduced if the vibration frequency is detected higher than the reference value.

예를 들어, 탈수 동작 시, 상기 드럼의 최대 회전속도가 1200rpm인 경우, 상 기 가속도센서로 상기 진동주파수를 감지하여 상기 진동주파수가 기준치보다 높게 감지되면 상기 드럼(120)의 최대 회전속도가 1080rpm으로 감소되도록 제어할 수 있다.For example, during the dehydration operation, when the maximum rotational speed of the drum is 1200 rpm, when the vibration frequency is detected by the acceleration sensor and the vibration frequency is higher than the reference value, the maximum rotation speed of the drum 120 is 1080 rpm. It can be controlled to be reduced to.

한편, 본 발명은 싱글 레이스를 사용한 볼 밸런서를 채용할 수 있기 때문에 종래의 2개 이상의 복수개의 레이스를 채용하는 드럼세탁기에 비해 제조비용을 절감할 수 있다.On the other hand, the present invention can employ a ball balancer using a single race, it is possible to reduce the manufacturing cost compared to a drum washing machine employing a plurality of two or more conventional races.

이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술 사상과 아래에 기재될 특허청구범위의 균등 범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

상술한 바와 같이 본 발명의 드럼세탁기의 진동 저감 장치 및 방법은 싱글 레이스를 사용한 볼 밸런서를 채용할 수 있기 때문에 드럼세탁기의 제조비용을 절감되고, 터브의 과대 진동 방지가 정확한 계산에 의한 것이기 때문에 터브의 과대 진동을 효율적으로 감소시킬 수 있는 효과를 창출한다.As described above, the apparatus and method for reducing vibration of the drum washing machine of the present invention can reduce the manufacturing cost of the drum washing machine because the ball balancer using a single race can be employed, and since the excessive vibration prevention of the tub is based on accurate calculation, the tub It creates an effect that can effectively reduce the excessive vibration of the.

Claims (5)

볼 밸런서를 채용하는 드럼세탁기의 진동 저감 방법에 있어서, In the vibration reduction method of the drum washing machine employing a ball balancer, 탈수 동작 시, 터브 과대 진동발생 이전의 시점에서 상기 드럼을 일정 회전속도로 일정시간 유지하도록 하고, 진동감지수단에서 감지한 상기 터브의 진동주파수를 통해 상기 드럼의 재상승시점을 판단하여 상기 드럼의 재상승시점이 되면 상기 드럼의 회전속도를 재상승시켜 상기 터브의 과대 진동이 감소되도록 제어하는 것을 특징으로 하는 드럼세탁기의 진동 저감 방법.In the dehydration operation, the drum is maintained at a constant rotational speed for a predetermined time at the time before the excessive vibration of the tub, and the re-raising time of the drum is determined by determining the re-rise time of the drum through the vibration frequency of the tub detected by the vibration sensing means. When the point of time to increase the rotational speed of the drum to reduce the excessive vibration of the tub, characterized in that for controlling the vibration of the drum washing machine. 제 1항에 있어서, The method of claim 1, 상기 터브 과대 진동발생 이전의 시점은 상기 드럼의 회전속도가 기설정 저장된 회전속도에 도달하는 시점인 것을 특징으로 하는 드럼세탁기의 진동 저감 방법.The time point before the excessive vibration of the tub is a vibration washing method of the drum washing machine, characterized in that the rotational speed of the drum reaches a preset stored rotational speed. 제 2항에 있어서, 상기 드럼의 재상승시점은 The method of claim 2, wherein the re-rise of the drum is 볼과 세탁물의 위상 차이를 검출하여 더 판단하는 것을 특징으로 하는 드럼세탁기의 진동 저감 방법.Vibration reduction method of the drum washing machine characterized in that it further detects the phase difference between the ball and the laundry. 볼 밸런서를 채용하는 드럼세탁기에 있어서, In the drum washing machine which adopts a ball balancer, 탈수 동작 시, 터브의 진동주파수를 감지하는 진동감지수단; 및Vibration sensing means for sensing the vibration frequency of the tub during the dehydration operation; And 터브 과대 진동발생 이전의 시점에서 상기 드럼이 일정 회전속도로 일정시간 유지하도록 하고, 상기 진동감지수단에서 감지한 상기 터브의 진동주파수를 통해 드럼의 재상승 시점을 판단하여 재상승 시점이 되면 상기 드럼의 회전속도를 재상승시켜 상기 터브의 진동이 감소되도록 제어하는 구동제어수단을 포함하는 것을 특징으로 하는 드럼세탁기의 진동 저감 장치.The drum is maintained at a constant rotational speed for a predetermined time at the time before the excessive vibration of the tub, and the drum's rotational speed is determined based on the vibration frequency of the tub detected by the vibration sensing means. And a driving control means for controlling the vibration of the tub to be reduced by increasing the speed again. 제 4항에 있어서,5. The method of claim 4, 상기 진동감지수단은 가속도센서인 것을 특징으로 하는 드럼세탁기의 진동 저감 장치.The vibration sensing means is a vibration reducing device of a drum washing machine, characterized in that the acceleration sensor.
KR1020060104552A 2006-10-26 2006-10-26 Vibration decreasing apparatus of drum type washer and method thereof KR101295359B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980034621A (en) * 1996-11-08 1998-08-05 구자홍 How to control the balance of drum washing machine
KR20010076576A (en) * 2000-01-26 2001-08-16 구자홍 Unbalance Sensing Device of Washing Machine
JP2005177090A (en) 2003-12-18 2005-07-07 Sanyo Electric Co Ltd Drum type washing machine
KR20050115764A (en) * 2004-06-05 2005-12-08 엘지전자 주식회사 Control process of dehydration in drum type washing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980034621A (en) * 1996-11-08 1998-08-05 구자홍 How to control the balance of drum washing machine
KR20010076576A (en) * 2000-01-26 2001-08-16 구자홍 Unbalance Sensing Device of Washing Machine
JP2005177090A (en) 2003-12-18 2005-07-07 Sanyo Electric Co Ltd Drum type washing machine
KR20050115764A (en) * 2004-06-05 2005-12-08 엘지전자 주식회사 Control process of dehydration in drum type washing machine

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