KR20080012495A - Washing machine and controlling method therefor - Google Patents

Washing machine and controlling method therefor Download PDF

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Publication number
KR20080012495A
KR20080012495A KR1020060073392A KR20060073392A KR20080012495A KR 20080012495 A KR20080012495 A KR 20080012495A KR 1020060073392 A KR1020060073392 A KR 1020060073392A KR 20060073392 A KR20060073392 A KR 20060073392A KR 20080012495 A KR20080012495 A KR 20080012495A
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South Korea
Prior art keywords
mass
washing machine
frame
washing
distance
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KR1020060073392A
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Korean (ko)
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KR101326300B1 (en
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임웅섭
김용명
박찬우
조문갑
김도연
오재준
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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
    • 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
    • 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
    • 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
    • D06F37/20—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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/268—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for suspension devices
    • 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
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
    • 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
    • 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

A washing machine and a method for controlling the same are provided to reduce noise and vibration of the washing machine by previously predicting the eccentricity of the laundry by using a mass and a sensing unit. A washing machine comprises a frame, a vibration system(30) having a mass(31) and an elastic member(32), and sensing unit(40). The frame forms an exterior appearance. The mass is vibrated by exciting force exerted to the frame. The elastic member is elastically supporting the mass. The sensing unit senses approach of the mass. The sensing unit is the distance sensor sensing distance from the mass.

Description

세탁기와 그 제어방법{WASHING MACHINE AND CONTROLLING METHOD THEREFOR}Washing machine and its control method {WASHING MACHINE AND CONTROLLING METHOD THEREFOR}

도 1은 본 발명에 따른 세탁기의 구성을 나타낸 측단면도.1 is a side cross-sectional view showing the configuration of a washing machine according to the present invention.

도 2는 도 1에서 요부가 되는 구성을 발췌하여 나타낸 사시도.Figure 2 is a perspective view showing an extract of the configuration of the main portion in FIG.

도 3은 본 발명에 따른 세탁기의 제어방법을 설명하기 위한 순서도.3 is a flow chart illustrating a control method of a washing machine according to the present invention.

도 4는 본 발명에 따른 세탁기에서 다른 형태의 진동시스템을 나타낸 사시도.Figure 4 is a perspective view showing another type of vibration system in the washing machine according to the present invention.

*도면의 주요부분에 대한 부호 설명*      * Description of symbols on the main parts of the drawings *

10 : 프레임 12 : 세탁조      10 frame 12 washing tank

20 : 구동모터 30 : 진동시스템      20: drive motor 30: vibration system

31 : 질량체 32 : 탄성부재      31: mass 32: elastic member

32a : 코일스프링 32b : 외팔보      32a: coil spring 32b: cantilever

40 : 감지장치 50 : 고정브라켓      40: detection device 50: fixing bracket

본 발명은 세탁기에 관한 것으로, 특히 탈수행정시 과도한 진동이 발생되는 것을 방지할 수 있는 세탁기와 그 제어방법에 관한 것이다.       The present invention relates to a washing machine, and more particularly, to a washing machine and a control method thereof which can prevent excessive vibration from occurring during dehydration administration.

세탁기는 모터의 구동력을 이용해 세탁조 내부에 투입된 세탁물, 세탁수 및 세제를 교반시킴으로써 세탁물에 묻은 때를 제거하는 장치이다. 일반적으로 세탁기는 외관을 형성하는 프레임과, 프레임의 내부에 회전 가능하게 설치되어 구동모터에 의해 회전하며 세탁 및 탈수 동작을 수행하는 세탁조를 포함하여 구성된다.       Washing machine is a device that removes the stain on the laundry by stirring the laundry, washing water and detergent put into the washing tank using the driving force of the motor. In general, the washing machine is configured to include a frame forming an exterior and a washing tank rotatably installed in the frame to rotate by a driving motor and perform washing and dehydration operations.

위와 같은 세탁기에서는 세탁조가 구동모터에 의해 회전하면서 세탁과 탈수 동작을 수행함에 따라 필연적으로 진동을 유발하는데, 특히 세탁조 내에 세탁물이 불균일하게 분포되어 있는 경우, 즉 세탁물로 인한 편심하중이 큰 경우에는 진동의 폭이 커지게 된다.       In the above washing machine, the washing tank rotates by the driving motor, which inevitably causes vibration as the washing and dehydration operation is performed. In particular, when the laundry is unevenly distributed in the washing tank, that is, when the eccentric load due to the laundry is large The width of the becomes larger.

세탁기의 이러한 진동은 세탁조가 고속으로 회전하는 탈수행정 시에 특히 문제된다. 즉 세탁기의 탈수행정 시에 세탁기가 과도하게 진동하게 되면 진동 소음이 크게 발생할 뿐만 아니라 세탁기 주위에 있는 다른 가전기기나 가구를 손상시킬 수 있으므로 세탁기가 가능한 적게 진동하면서 탈수행정을 수행할 수 있도록 하는 것이 좋다.      This vibration of the washing machine is particularly problematic when the washing tank rotates at high speed. In other words, if the washing machine vibrates excessively during the dehydrating stroke of the washing machine, not only the vibration noise may be greatly generated, but also other household appliances or furniture around the washing machine may be damaged. good.

이를 위해 종래의 세탁기에서는 세탁조 주위에 안전스위치를 설치하고, 세탁조가 과도하게 진동하면서 안전스위치의 레버를 건드리는 경우에 구동모터를 오프시켜 탈수행정이 중단되도록 하였다. 그러나 이러한 종래의 장치 및 방법은 편심하중으로 인해 이미 과도한 진동이 발생한 상태에서 탈수행정을 중단시키는 것이므로 세탁기의 과도한 진동을 방지하는 근본적인 해결책이 되지 못한다.      To this end, in the conventional washing machine, a safety switch is installed around the washing tank, and when the washing tank excessively vibrates and touches the lever of the safety switch, the driving motor is turned off to stop the dehydration operation. However, such a conventional apparatus and method is to stop the dehydration stroke in a state in which excessive vibration has already occurred due to the eccentric load, and thus it is not a fundamental solution to prevent excessive vibration of the washing machine.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 세탁물의 편심 상태를 미리 예측 판단하여 세탁물의 편심하중으로 인해 세탁기가 과도하게 진동하는 것을 방지할 수 있는 세탁기와 그 제어방법을 제공하는데 있다.       The present invention is to solve such a problem, an object of the present invention to provide a washing machine and a control method that can prevent the washing machine from excessive vibration due to the eccentric load of the laundry by predicting the eccentric state of the laundry in advance. It is.

이러한 목적을 달성하기 위한 본 발명에 따른 세탁기는 외관을 형성하는 프레임;과 상기 프레임에 가해지는 가진력(加振力)에 의해 진동하는 질량체와, 상기 질량체를 탄성 지지하는 탄성부재를 가지는 진동시스템;과 상기 질량체의 접근 정도를 측정하기 위한 감지장치;를 포함하는 것을 특징으로 한다.       Washing machine according to the present invention for achieving the above object is a vibration system having a frame for forming an appearance, a mass body vibrating by the excitation force applied to the frame, and an elastic member for elastically supporting the mass body; And a sensing device for measuring the degree of approach of the mass.

상기 감지장치는 상기 질량체와의 거리를 측정하는 거리감지센서일 수 있다.The sensing device may be a distance sensor for measuring the distance to the mass.

또한 본 발명에 따른 세탁기는 외관을 형성하는 프레임과, 세탁물이 세탁되는 세탁조와, 상기 세탁조를 회전시키기 위한 구동모터를 포함하는 세탁기에 있어서, 상기 구동모터가 특정 회전수로 회전할 때 상기 세탁기와 공진하도록 설계되어 상기 프레임에 부착되는 진동시스템과, 상기 진동시스템의 진폭을 검출하기 위한 감지장치를 포함하는 것을 특징으로 한다.In addition, a washing machine according to the present invention includes a frame forming an exterior, a washing tank in which laundry is washed, and a driving motor for rotating the washing tank, wherein the washing motor is rotated at a specific rotational speed. A vibration system designed to resonate and attached to the frame, and a sensing device for detecting an amplitude of the vibration system.

또한 상기 프레임의 일측면에 고정되는 고정브라켓을 더 포함하고, 상기 진동시스템은 상기 고정브라켓의 내부에서 진동하는 질량체와, 일단은 상기 질량체에 고정되고 타단은 상기 고정브라켓에 고정되어 상기 질량체를 탄성 지지하는 탄성부재를 포함하며, 상기 감지장치는 상기 고정브라켓의 내측면에 설치되어 상기 질량 체와의 거리를 측정하는 거리감지센서인 것을 특징으로 한다.       The apparatus may further include a fixing bracket fixed to one side of the frame, wherein the vibration system includes a mass vibrating inside the fixing bracket, one end of which is fixed to the mass, and the other end of which is fixed to the fixing bracket. It includes an elastic member for supporting, the sensing device is characterized in that the distance sensor is installed on the inner surface of the fixing bracket for measuring the distance to the mass body.

또한 본 발명에 따른 세탁기의 제어방법은 외관을 형성하는 프레임과, 세탁물이 세탁되는 세탁조와, 상기 세탁조를 회전시키기 위한 구동모터를 포함하는 세탁기의 제어방법에 있어서, 탈수행정을 위해 상기 구동모터를 구동시키는 단계;와상기 프레임에 가해지는 가진력(加振力)에 의해 진동하는 질량체와의 거리를 측정하는 단계;와 측정된 거리(dm)와 기준치(ds)를 비교하는 단계;와 측정된 거리가 기준치 이하인 경우에 상기 세탁조 내의 세탁물을 재배치시키 단계;를 포함하는 것을 특징으로 한다.      In addition, the control method of the washing machine according to the present invention is a control method for a washing machine comprising a frame for forming an exterior, a washing tank in which laundry is washed, and a driving motor for rotating the washing tank, wherein the driving motor is used for dewatering administration. And measuring the distance to the mass vibrating by the excitation force applied to the frame; and comparing the measured distance (dm) and the reference value (ds); and the measured distance And relocating the laundry in the washing tank when the value is less than or equal to the reference value.

이하에서는 본 발명에 따른 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다. 도 1은 본 발명에 따른 세탁기의 구성을 나타낸 측단면도이고, 도 2는 도 1에서 요부가 되는 구성을 발췌하여 나타낸 사시도이다.       Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. 1 is a side cross-sectional view showing the configuration of a washing machine according to the present invention, Figure 2 is a perspective view showing an extract of the configuration to be the main part in FIG.

도 1에 도시된 바와 같이, 본 발명에 따른 세탁기는 세탁기의 전체적인 외관을 형성하는 프레임(10)과, 프레임(10)의 내부에 설치되고 세탁 시에 세탁수가 저장되는 수조(11)와, 수조(11)의 내부에 회전 가능하게 설치되며 세탁 시 세탁물이 세탁되는 세탁조(12)와, 세탁조(12)를 정역회전시키기 위한 구동모터(20)와, 세탁기의 전체적인 동작을 제어하기 위한 제어부(미도시)를 가진다.       As shown in FIG. 1, a washing machine according to the present invention includes a frame 10 forming an overall appearance of a washing machine, a water tank 11 installed inside the frame 10 and storing wash water at the time of washing, and a water tank. Rotating in the interior of the (11) and the washing tank 12 to wash the laundry at the time of washing, the drive motor 20 for forward and reverse rotation of the washing tank 12, the control unit for controlling the overall operation of the washing machine (not shown) Have time).

프레임(10)의 내측 상부에는 수조(11)로 세탁수와 세제를 공급하기 위한 급수관(13)과 세제 공급장치(14)가 설치되고, 프레임(10)의 하부에는 수조(11)에서 배출된 세탁수를 프레임(10)의 외부로 배수시키는 배수펌프(15)와 배수관(16)이 설치된다.       A water supply pipe 13 and a detergent supply device 14 for supplying washing water and a detergent to the water tank 11 are installed at an inner upper portion of the frame 10, and a lower portion of the frame 10 is discharged from the water tank 11. A drain pump 15 and a drain pipe 16 for draining the wash water to the outside of the frame 10 are installed.

세탁조(12)와 구동모터(20)의 사이에는 구동모터(20)의 회전력을 세탁조(12)로 전달하기 위한 구동축(21)이 설치되고, 구동축(21) 주위에는 구동축(21)을 회전 가능하게 지지할 수 있도록 베어링(22)이 설치된다.      A driving shaft 21 for transmitting the rotational force of the driving motor 20 to the washing tub 12 is installed between the washing tub 12 and the driving motor 20, and the driving shaft 21 is rotatable around the driving shaft 21. The bearing 22 is installed to be able to support it.

또한 도 1 및 도 2에 도시된 바와 같이, 본 발명에 따른 세탁기는 구동모터(20)가 특정 회전수로 회전할 때 프레임(10)과 공진하도록 설계되는 진동시스템(30)과, 진동시스템(30)의 진폭을 검출할 수 있도록 진동시스템에 인접하여 설치되는 감지장치(40)와, 상기 진동시스템(30)과 감지장치(40)를 프레임(10)의 상면(10a)에 고정시키기 위한 고정브라켓(50)을 가진다.       1 and 2, the washing machine according to the present invention includes a vibration system 30 and a vibration system designed to resonate with the frame 10 when the driving motor 20 rotates at a specific rotational speed. The sensing device 40 is installed adjacent to the vibration system so as to detect the amplitude of the 30, and the fixing for fixing the vibration system 30 and the sensing device 40 to the upper surface (10a) of the frame 10 It has a bracket (50).

위와 같은 진동시스템(30)과 감지장치(40)는 세탁조(12)가 고속으로 회전하기 전에 세탁조(12)에 작용하는 편심하중을 미리 예측 판단하여 고속 탈수 시에 편심하중으로 인해 진동이 과도하게 발생되는 것을 방지한다. 즉 구동모터(20)가 저속으로 회전하는 탈수 초기에 진동시스템(30)을 공진시켜 그 진폭을 감지장치(40)로 검출하고, 그 결과 진동시스템(30)의 진폭이 크다고 판단되는 경우에는 탈수를 일시 중단하여 세탁물을 재배치하는 것과 같은 제어를 하게 되는 것이다.       The vibration system 30 and the sensing device 40 as described above predict the eccentric load acting on the washing tub 12 before the washing tub 12 rotates at a high speed, so that the vibration is excessive due to the eccentric load during the high speed dehydration. Prevent it from occurring. That is, when the driving motor 20 rotates at a low speed, the vibration system 30 is resonated and the amplitude of the vibration system 30 is detected by the sensing device 40. As a result, when the amplitude of the vibration system 30 is determined to be large, dehydration is performed. Suspend to control such as relocating the laundry.

본 발명에서 진동시스템(30)을 공진시켜 그 진폭을 일부러 크게 하는 것은 진동시스템(30)이 일종의 증폭기 역할을 하여 감지장치(40)가 편심하중의 크기에 따른 진폭의 변화를 보다 용이하고 정확하게 측정할 수 있도록 하기 위한 것이다.      In the present invention, the vibration system 30 is resonated to deliberately increase its amplitude so that the vibration system 30 acts as a kind of amplifier so that the sensing device 40 more easily and accurately measures the change of amplitude according to the magnitude of the eccentric load. It is to make it possible.

진동시스템(30)은 프레임(10)에 가해지는 가진력(加振力)에 의해 진동하는 질량체(31)와, 질량체(31)를 탄성 지지하는 탄성부재(32)를 포함하여 구성된다. 탄성부재(32)는 그 일단이 질량체(31)에 고정되고, 타단이 고정브라켓(50)에 고정되 어 질량체(31)를 탄성 지지한다. 본 실시예에서는 탄성부재(32)로서 4개의 코일스프링(32a)이 사용된 경우를 나타내었다.      The vibration system 30 includes a mass body 31 oscillating by an excitation force applied to the frame 10 and an elastic member 32 elastically supporting the mass body 31. One end of the elastic member 32 is fixed to the mass body 31 and the other end is fixed to the fixing bracket 50 to elastically support the mass body 31. In this embodiment, four coil springs 32a are used as the elastic member 32.

감지장치(40)는 질량체(31)가 진동할 때 감지장치(40)에 접근하는 정도를 측정함으로써, 질량체(31)의 진폭을 검출한다. 즉 질량체(31)와의 거리가 상대적으로 가깝다고 측정되는 경우에는 질량체(31)가 큰 진폭으로 진동하고 있는 것이고, 질량체(31)와의 거리가 상대적으로 멀다고 측정되는 경우에는 질량체(31)가 작은 진폭으로 진동하고 있는 것이다. 이러한 감지장치(40)로는 적외선이나 초음파를 이용한 거리감지센서가 사용될 수 있다. 도 1 및 2에서는 감지장치(40)가 고정브라켓(50)의 내측면에 설치되는 예를 보였으나, 감지장치(40)의 위치는 필요에 따라 변경될 수 있다.      The sensing device 40 detects the amplitude of the mass 31 by measuring the degree of approaching the sensing device 40 when the mass 31 vibrates. In other words, when the distance from the mass 31 is measured to be relatively close, the mass 31 vibrates with a large amplitude. When the distance from the mass 31 is measured to be relatively large, the mass 31 is reduced to a smaller amplitude. It's vibrating. As the sensing device 40, a distance sensor using infrared rays or ultrasonic waves may be used. 1 and 2 show an example in which the sensing device 40 is installed on the inner side of the fixing bracket 50, the position of the sensing device 40 can be changed as necessary.

이하에서는 도 1 내지 3를 참조하여 본 발명에 따른 세탁기의 동작 및 제어방법을 보다 상세히 설명한다. 도 3은 본 발명에 따른 세탁기의 제어방법을 설명하기 위한 순서도이다.       Hereinafter, the operation and control method of the washing machine according to the present invention will be described in more detail with reference to FIGS. 1 to 3. 3 is a flowchart illustrating a control method of a washing machine according to the present invention.

세탁조(12)에 세탁물을 넣은 후 세탁기를 동작시키면 급수관(13)과 세제 공급장치(14)를 통해 세제와 함께 세탁수가 세탁조(12)로 공급된 후 세탁조(12)가 구동모터(20)에 의해 회전하면서 세탁물이 세탁된다. 또 세탁행정이 끝난 후에는 세탁조(12)가 고속으로 회전하면서 세탁물이 탈수된다.      After the laundry is put into the washing tank 12 and the washing machine is operated, the washing tank 12 is supplied to the driving tank 20 after the washing water is supplied to the washing tank 12 together with the detergent through the water supply pipe 13 and the detergent supply device 14. The laundry is washed while rotating. In addition, after the washing operation is completed, the laundry is dewatered while the washing tank 12 rotates at a high speed.

탈수행정이 시작되면 제어부(미도시)는 구동모터(20)를 회전시켜 탈수행정을 수행한다(S110). 이 때 세탁물의 편심하중으로 인한 진동은 세탁조(12)와 프레임(10)을 연결하는 여러 구조물을 통해 프레임(10)에 전달된다. 한편 구동모터(20) 가 특정 회전수로 회전할 때 진동시스템(30)은 프레임(10)에 가해지는 가진력에 의해 공진하여 질량체(31)의 진폭이 커지게 되는데, 특히 세탁조(12)의 편심하중이 클수록 그에 상응하여 질량체(31)의 진폭도 커지게 된다.      When the dehydration stroke is started, the controller (not shown) rotates the drive motor 20 to perform the dehydration stroke (S110). At this time, the vibration due to the eccentric load of the laundry is transmitted to the frame 10 through various structures connecting the washing tank 12 and the frame 10. On the other hand, when the drive motor 20 rotates at a certain rotational speed, the vibration system 30 is resonated by the excitation force applied to the frame 10, the amplitude of the mass 31 is increased, in particular the eccentricity of the washing tank 12 The greater the load, the greater the amplitude of the mass 31.

감지장치(40)는 질량체(31)가 진동할 때 질량체(31)와의 거리를 측정하여 그 결과를 제어부로 보내고(S120), 제어부는 측정된 거리(dm)를 기준치(ds)와 비교한다(S130). 여기서 기준치(ds)는 세탁기의 설계 시에 결정되는 값으로서, 질량체(31)가 큰 폭으로 진동함에 따라 감지장치(40)와의 거리가 가까워져서 과도한 진동이 발생시킬 것이라 판단되는 기준거리이다.       When the mass 31 vibrates, the sensing device 40 measures the distance to the mass 31 and sends the result to the controller (S120), and the controller compares the measured distance dm with the reference value ds ( S130). Here, the reference value ds is a value determined at the time of designing the washing machine. The reference value ds is a reference distance that is determined to generate excessive vibration as the distance from the sensing device 40 increases as the mass 31 vibrates greatly.

측정된 거리(dm)를 기준치(ds)와 비교할 결과 측정된 거리(dm)가 기준치(ds) 이하라고 판단되는 경우에는 제어부는 구동모터(20)를 제어하여 탈수행정을 일시 중단하고 세탁물 재배치 행정을 수행한다(S140). 여기서 세탁물 재배치 행정은 단순히 구동모터(20)의 구동을 일정 시간 중단시킨 후 다시 탈수행정을 시작하여 세탁물을 재배치 시키거나 구동모터(20)를 낮은 회전수로 정역회전시키면서 세탁물을 재배치 시키는 행정이 될 수 있다.       If it is determined that the measured distance dm is less than or equal to the reference value ds as a result of comparing the measured distance dm with the reference value ds, the controller controls the driving motor 20 to suspend the dehydration stroke and to move the laundry. Perform (S140). Here, the laundry relocation stroke may be a stroke for rearranging the laundry while stopping driving of the driving motor 20 for a predetermined time and then starting the dehydration again to relocate the laundry or rotating the driving motor 20 at a low rotation speed. Can be.

한편 측정된 거리(dm)가 기준치(ds)를 초과하는 경우에는 편심하중이 작아 심한 진동이 예상되지 않는 경우이므로 계속하여 구동모터(20)의 회전수를 증가시켜 고속 탈수를 하게 된다(S150).       On the other hand, if the measured distance dm exceeds the reference value ds, the eccentric load is small and severe vibration is not expected. Accordingly, the rotation speed of the driving motor 20 is continuously increased to perform high speed dehydration (S150). .

도 4는 본 발명에 따른 세탁기에서 다른 형태의 진동시스템을 나타낸 사시도이다. 도 4에 도시된 바와 같이, 진동시스템(30)은 고정브라켓(50)을 통해 프레임(10)의 후면(10b)에 고정될 수 있다. 본 실시예는 탄성부재(32)로서 외팔보(32b) 를 사용한다는 점에서 도 2의 실시예와 차이가 있다. 외팔보(32b)는 일단이 고정브라켓(50)에 고정되고, 타단은 질량체(31)에 고정되어 질량체(31)를 탄성 지지한다.       4 is a perspective view showing another type of vibration system in the washing machine according to the present invention. As shown in FIG. 4, the vibration system 30 may be fixed to the rear surface 10b of the frame 10 through the fixing bracket 50. This embodiment differs from the embodiment of FIG. 2 in that cantilever 32b is used as elastic member 32. One end of the cantilever 32b is fixed to the fixing bracket 50 and the other end is fixed to the mass 31 to elastically support the mass 31.

도 4의 진동시스템(30)의 동작 및 제어방법은 도 2의 진동시스템과 대동 소이하며, 위에 설명된 내용으로부터 충분히 예측 가능하므로 이에 관한 중복적인 설명은 생략한다. The operation and control method of the vibration system 30 of FIG. 4 is similar to that of the vibration system of FIG. 2, and can be sufficiently predicted from the above description, and thus redundant description thereof will be omitted.

위에서 설명한 바와 같이, 본 발명은 세탁물의 편심 정도를 미리 예측하여 그 결과에 따라 고속 탈수를 계속하여 진행함으로써 세탁물의 편심하중으로 인해 과도한 진동 및 소음이 발생하는 것을 방지할 수 있는 효과가 있다.      As described above, the present invention has an effect of preventing excessive vibration and noise caused by the eccentric load of the laundry by predicting the degree of eccentricity of the laundry in advance and continuing the high speed dewatering according to the result.

Claims (5)

외관을 형성하는 프레임;과      A frame forming an appearance; and 상기 프레임에 가해지는 가진력(加振力)에 의해 진동하는 질량체와, 상기 질량체를 탄성 지지하는 탄성부재를 가지는 진동시스템;과 A vibration system having a mass vibrating by an excitation force applied to the frame, and an elastic member elastically supporting the mass; 상기 질량체의 접근 정도를 측정하기 위한 감지장치;를       Sensing device for measuring the degree of approach of the mass; 포함하는 것을 특징으로 하는 세탁기.       Washing machine comprising a. 제1항에 있어서,The method of claim 1, 상기 감지장치는 상기 질량체와의 거리를 측정하는 거리감지센서인 것을 특징으로 하는 세탁기.The sensing device is a washing machine, characterized in that the distance sensor for measuring the distance to the mass. 외관을 형성하는 프레임과, 세탁물이 세탁되는 세탁조와, 상기 세탁조를 회전시키기 위한 구동모터를 포함하는 세탁기에 있어서,In the washing machine comprising a frame for forming an appearance, a washing tank in which laundry is washed, and a driving motor for rotating the washing tank, 상기 구동모터가 특정 회전수로 회전할 때 상기 세탁기와 공진하도록 설계되어 상기 프레임에 부착되는 진동시스템과, 상기 진동시스템의 진폭을 검출하기 위한 감지장치를 포함하는 것을 특징으로 하는 세탁기.And a vibration system designed to resonate with the washing machine when the driving motor rotates at a specific rotation speed and attached to the frame, and a sensing device for detecting an amplitude of the vibration system. 제3항에 있어서,The method of claim 3, 상기 프레임의 일측면에 고정되는 고정브라켓을 더 포함하고,      Further comprising a fixing bracket fixed to one side of the frame, 상기 진동시스템은 상기 고정브라켓의 내부에서 진동하는 질량체와, 일단은 상기 질량체에 고정되고 타단은 상기 고정브라켓에 고정되어 상기 질량체를 탄성 지지하는 탄성부재를 포함하며, The vibration system includes a mass body vibrating inside the fixing bracket, one end of which is fixed to the mass body and the other end of which is fixed to the fixing bracket to elastically support the mass body. 상기 감지장치는 상기 고정브라켓의 내측면에 설치되어 상기 질량체와의 거리를 측정하는 거리감지센서인 것을 특징으로 하는 세탁기.       The sensing device is a washing machine, characterized in that installed on the inner surface of the fixing bracket is a distance sensor for measuring the distance to the mass. 외관을 형성하는 프레임과, 세탁물이 세탁되는 세탁조와, 상기 세탁조를 회전시키기 위한 구동모터를 포함하는 세탁기의 제어방법에 있어서,In the control method of the washing machine comprising a frame for forming an appearance, a washing tank in which the laundry is washed, and a driving motor for rotating the washing tank, 탈수행정을 위해 상기 구동모터를 구동시키는 단계;와Driving the drive motor for dehydration stroke; and 상기 프레임에 가해지는 가진력(加振力)에 의해 진동하는 질량체와의 거리를 측정하는 단계;와Measuring a distance from the vibrating mass due to the excitation force applied to the frame; and 측정된 거리(dm)와 기준치(ds)를 비교하는 단계;와Comparing the measured distance dm with a reference value ds; and 측정된 거리가 기준치 이하인 경우에 상기 세탁조 내의 세탁물을 재배치시키 단계;를 포함하는 것을 특징으로 하는 세탁기의 제어방법.And rearranging the laundry in the washing tank when the measured distance is equal to or less than a reference value.
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