KR950004266B1 - Control method and device for dehydration - Google Patents

Control method and device for dehydration Download PDF

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Publication number
KR950004266B1
KR950004266B1 KR1019920016231A KR920016231A KR950004266B1 KR 950004266 B1 KR950004266 B1 KR 950004266B1 KR 1019920016231 A KR1019920016231 A KR 1019920016231A KR 920016231 A KR920016231 A KR 920016231A KR 950004266 B1 KR950004266 B1 KR 950004266B1
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South Korea
Prior art keywords
motor
dehydration
speed
signal
control unit
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KR1019920016231A
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Korean (ko)
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KR940007261A (en
Inventor
오동일
최준혁
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주식회사금성사
이헌조
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Priority to KR1019920016231A priority Critical patent/KR950004266B1/en
Publication of KR940007261A publication Critical patent/KR940007261A/en
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Publication of KR950004266B1 publication Critical patent/KR950004266B1/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 
    • D06F33/32—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
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • 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

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

(a) driving a motor at a low speed according to a first reference voltage in a limited time after the detection of a water level of a hydroextractor after washing a laundry, (b) increasing and controlling the rotation per minute of a motor to a high speed according to a second reference voltage after (a), and (c) performing a main dehydration for a required time after the speed of the motor runs high according to the step of (b).

Description

세탁기의 탈수 제어방법 및 그 장치Dewatering control method of washing machine and device

제1도는 종래 세탁기의 탈수 제어장치의 블록도.1 is a block diagram of a dehydration control device of a conventional washing machine.

제2도는 제1도에 따른 탈수제어시 신호흐름도.2 is a signal flow diagram in the dehydration control according to FIG.

제3도는 본 발명 세탁기의 탈수 제어장치의 블록도.3 is a block diagram of the dehydration control device of the washing machine of the present invention.

제4도는 제3도에 따른 탈수제어시 신호흐름도.4 is a signal flow diagram in the dehydration control according to FIG.

제5도는 제3도에 있어서, 시간에 따른 모터의 회전상태를 보인 파형도.FIG. 5 is a waveform diagram showing a rotation state of a motor according to time in FIG.

제6도는 제3도에 있어서, 기준전압변화에 따른 FG신호의 파형도.6 is a waveform diagram of an FG signal according to a reference voltage change in FIG. 3.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 마이크로컴퓨터 2 : 수위감지제어부1: microcomputer 2: level detection control unit

3 : 모터 4 : 탈수제어부3: motor 4: dehydration control part

5 : 배수밸브제어부 6 : 속도제어부5: drain valve control unit 6: speed control unit

7 : FG신호감지부7: FG signal detection unit

본 발명은 세탁기의 탈수제어에 관한 것으로, 특히 세탁기에 BLDC모터를 부착하고 세탁물 탈수시 간헐탈수를 생략함으로써 종대 세탁기보다 탈수도를 향상시킴과 아울러 비산음에 의한 소음 및 모터의 급격한 온도상승을 방지하는 세탁기의 탈수 제어방법 및 그 장치에 관한 것이다.The present invention relates to the dehydration control of the washing machine, in particular, by attaching a BLDC motor to the washing machine and omitting intermittent dehydration during laundry dehydration to improve the dewatering degree than the conventional washing machine and to prevent the noise and the rapid temperature rise of the motor by scattering sound It relates to a dewatering control method of the washing machine and an apparatus thereof.

제1도는 종래 세탁기의 탈수 제어장치의 블럭도로서 이에 도시한 바와같이, 세탁시 급수량을 제어하고 탈수시 공수위를 감지하는 수위감시제어부(2)와, 탈수동작에서 간헐탈수 및 본탈수를 제어하는 탈수제어부(4)와, 탈수동작완료에 따라 배수밸브의 개폐를 제어하는 배수밸브제어부(5)와, 탈수진행신호(Vl)에 따라 탈수조를 회전시키는 모터(3)의, 상기 각부(2-5)를 제어하는 마이크로컴퓨터(1)로 구성된 것으로, 상기 모터(3)는 유도모터이다.1 is a block diagram of a dehydration control device of a conventional washing machine, as shown therein, a water level monitoring control unit (2) for controlling the amount of water in washing and detecting the water level during dehydration, and intermittent dehydration and main dewatering in dewatering operation. Each part of the dehydration control unit 4, the drain valve control unit 5 for controlling the opening and closing of the drain valve in accordance with the completion of the dehydration operation, and the motor 3 for rotating the dehydration tank in accordance with the dehydration progress signal Vl. 2-5), which comprises a microcomputer 1, wherein the motor 3 is an induction motor.

이와같은 종래장치의 동작과정을 제2도 탈수제어시 신호흐름도를 참조하여, 설명하면 다음과 같다.The operation of the conventional apparatus will be described with reference to the signal flow chart during the dehydration control of FIG. 2 as follows.

먼저, 세탁동작의 완료를 인자한 마이크로컴퓨터(1)가 탈수신호(V3)를 출력하면 배수밸브제어부(5)는 배수밸브를 열어 수조의 물을 방출하고 수위감지제어부(2)는 수조의 물을 방출하고 수위감지제어부(2)는 수조의 공수위를 감지한다. 이때, 마이크로컴퓨터(1)는 수위감지제어부(2)를 통해 공수위를 감지하면 일정시간(1분 3O초)후 탈수진행신호(V2)를 모터(3)에 출력하여 탈수조를 회전시킨다.First, when the microcomputer 1 printing the completion of the washing operation outputs the dehydration signal V3, the drain valve control unit 5 opens the drain valve to discharge water from the tank, and the water level detection control unit 2 drains the tank water. The water level detection control unit 2 detects the air level of the tank. At this time, when the microcomputer 1 detects the air level through the water level detection control unit 2, the microcomputer 1 rotates the dehydration tank by outputting the dehydration progress signal V2 to the motor 3 after a predetermined time (1 minute 30 seconds).

이에따라, 탈수제어부(4)는 모터(3)를 3초 온시킨 후 7초 오프시키는 동작을 3회 반복하고 다시 상기 모터(3)를 3초 온시킨 후 3초 오프시키는 동작을 10회 반복하여 간헐탈수를 제어하고, 본 탈수동작을 7분간 탈수동작을 완료한다,Accordingly, the dehydration controller 4 repeats the operation of turning on the motor 3 for 3 seconds and turning it off for 7 seconds three times and then turning the motor 3 on for 3 seconds and turning off the 3 seconds for 10 times. The intermittent dehydration is controlled and the dehydration operation is completed for 7 minutes.

그러나, 이와같은 종래 장치는 간헐탈수의 시간이 제약되어 세탁조에 들어 차있는 비산음 상태에서 본 탈수동작이 수행됨으로써 소음이 심하게 발생하고 모터의 온도가 급격히 상승하여 모터의 특성을 저하시킴과 아울러 탈수효과를 저하시키며, 세탁시간을 연장시키는 문제점이 있었다.However, such a conventional device is limited in the time of intermittent dehydration, the dehydration operation is performed in a scattering state filled in the washing tank, the noise is generated severely, the temperature of the motor rises sharply, deteriorates the characteristics of the motor and dewatering Degrading the effect, there was a problem extending the washing time.

본 발명은 이러한 문제점을 감안하여 BLDC모터를 부착하고, 탈수동작수행시 모터의 속도를 감지하여 탈수시간 및 모터의 속도를 제어함으로써 소음을 방지하고 탈수효과를 향상시키는 세탁기의 탈수 제어방법 및 그 장치를 창안한 것으로, 이를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.In view of the above problems, the present invention is attached to a BLDC motor, and detects the speed of the motor during the dehydration operation to control the dehydration time and the speed of the motor to prevent noise and improve the dehydration effect of the washing machine and its apparatus The invention is described in detail with reference to the accompanying drawings as follows.

제3도는 본 발명 세탁기의 탈수 제어장치의 블럭도로서 이에 도시한 바와같이, 세탁시 급수를 제어하고 탈수시 공수위를 감지하는 수위감지제어부(2)와, 세탁동작에 따라 배수밸브의 개폐를 제어하는 배수벨브제어부(5)와, 상기 수위감지제어부(2)의 출력(V1)을 점검하여 배수제어신호(V2) 및 모터구동신호(V3)를 출력하고 이에따른 감지신호(V5)를 분당회전수로 변환하여 속도제어신호(V4)를 출력하는 마이크로컴퓨터(1)와, 이 마이크로컴퓨터(1)의 출력(V3)에 따라 수조를 회전시기는 모터(3)와, 이 모터(3)의 회전에 따라 FG신호를 홀센서로 감지하여 감지신호(V5)를 상기 마이크로컴퓨터(1)에 출력하는 FG신호감지부(7)와, 상기 마이크로컴퓨터(1)의 속도제어신호(V5)를 입력받아 펄스폭변조(PWM)하고 기준전압(Vrefl),(Vref2)과 비교함에 따라 상기 모터(3)의 속도를 제어히는 속도제어부(6)로 구성한 것으로, 상기 모터(3)는 BLDC모터이다.3 is a block diagram of the dehydration control device of the washing machine of the present invention, as shown in the water level control unit (2) for controlling the water supply during washing and detecting the air level when dewatering, and the opening and closing of the drain valve in accordance with the washing operation Check the drain valve control unit 5 and the output V1 of the water level detection control unit 2 to output the drain control signal (V2) and the motor drive signal (V3), and the resulting detection signal (V5) per minute A microcomputer 1 for converting the rotational speed to output the speed control signal V4, a motor 3 for rotating the water tank according to the output V3 of the microcomputer 1, and this motor 3 The FG signal detecting unit 7 detects the FG signal by the Hall sensor and outputs the detection signal V5 to the microcomputer 1, and the speed control signal V5 of the microcomputer 1. The speed of the motor 3 is reduced by receiving the pulse width modulation PWM and comparing it with the reference voltages Vrefl and Vref2. Hi is configured as a speed control unit 6, the motor 3 is a BLDC motor.

이와같이 구성한 본 발명 세탁기의 탈수 제어장치의 작용 및 효과를 제 4 도 탈수제어시 신호흐름도, 제 5도 시간에 따른 모터의 회전상태를 보인 파형도, 제6도 기준전압변화에 따른 FG신호의 파형도를 참조하여 상세히 실명하면 다음과 같다.The operation and effects of the dehydration control device of the washing machine of the present invention configured as described above are shown in FIG. 4 during the dehydration control. FIG. 5 is a waveform diagram showing the rotational state of the motor according to time. With reference to the drawings in detail as follows.

먼저, 세탁동작이 완료되어 마이크로컴퓨터(1)에서 배수제어신호(V2)가 입력한 배수밸브제어부(5)가 배수밸브를 열면 세탁조의 물이 방출되고 이에따라, 수위감지제어부(2)는 세탁조의 수위를 감지한다. 이때,수위감지제어(2)의 감지신호(Vl)를 점검한 마이크로컴퓨터(1)가 공수위를 인지하면 일정시간(30초)후 모터구동신호(V3)를 모터(3)에 출력하고 상기 모터(3)는 탈수조를 회전시킨다.First, when the washing operation is completed and the drain valve control unit 5 inputted by the drain control signal V2 in the microcomputer 1 opens the drain valve, the water in the washing tank is discharged. Accordingly, the water level detection control unit 2 is connected to the washing tank. Detect water level At this time, when the microcomputer 1 that checks the detection signal Vl of the water level detection control 2 recognizes the air level, the motor drive signal V3 is output to the motor 3 after a predetermined time (30 seconds). The motor 3 rotates the dehydration tank.

그리고, FG신호감지부(7)는 홀센서로 모터(3)의 각상에서 FG신호를 감지하여 감지신호(V5)를 마이크로컴퓨터(1)에 출력하고 상기 마이크로컴퓨터(1)는 상기 신호(V5)를 분당회전수로 변환하여 속도제어신호(V4)를 속도제어부(6)에 출력한다.In addition, the FG signal detection unit 7 detects the FG signal at each phase of the motor 3 with a hall sensor and outputs a detection signal V5 to the microcomputer 1, and the microcomputer 1 transmits the signal V5. ) Is converted into revolutions per minute and the speed control signal V4 is output to the speed controller 6.

이때, 속도제어부(6)는 속도제어신호(V4)를 펄스폭 변조하여 제6도 (가)에 도시한 바와같이 기준전압(Vrefl)을 조정함으로써 모터(3)는 저속(약 300R.P.M)으로 탈수조를 회전시겨 세탁물에 함유된 물을 탈수시키고 FG신호감지부(7)가 감지한 상기 모터(3)의 FG신호는 제6 도 (가)에 도시한 바와같다.At this time, the speed controller 6 pulse-modulates the speed control signal V4 to adjust the reference voltage Vrefl as shown in FIG. Rotate the dehydration tank to dehydrate the water contained in the laundry, and the FG signal of the motor 3 detected by the FG signal detection unit 7 is as shown in FIG.

그리고, 모터(3)의 저속회전에 따라 세닥물에 함유된 물이 거의 탈수되면 속도제어부(6)는 기준전압을 펄스폭변조신호의 상부로 점차 조정하여 상기 모터(3)의 회전속도를 점차로 상싱시키고 이에따라 회전속도가 고속(1600R.P.M)이 되면 상기 속도제어부(6)는 기준전압(Vref2)을 제6도 (나)에 도시한 바와같이 고정시킨다.When the water contained in the shredding water is almost dehydrated as the motor 3 rotates at a low speed, the speed controller 6 gradually adjusts the reference voltage to the upper portion of the pulse width modulation signal to gradually increase the rotation speed of the motor 3. When the speed is constant and the rotational speed is high (1600 R.PM), the speed controller 6 fixes the reference voltage Vref2 as shown in FIG. 6 (b).

이때, FG신호감지부(7)로 감지한 모터(3)의 FG신호는 제6도 (나)에 도시한 바와같고, 마이크로컴퓨터(1)는 모터구동신호(V3)를 소정시간(5분) 동안 출력하여 탈수를 수행한 후 탈수동작을 완료한다.At this time, the FG signal of the motor 3 detected by the FG signal detection unit 7 is as shown in FIG. 6 (B), and the microcomputer 1 generates the motor drive signal V3 for a predetermined time (5 minutes). After dehydration is performed by outputting and then the dehydration operation is completed.

이와같은 세탁기의 탈수동작을 제5도에서 설명하면, 세탁이 완료되어 공수위를 감지하면 마이크로컴퓨터(1)는 제5도의 1구간(30초)동안 모터(3)의 구동을 보류한 후 제5도의 2구간에서 모터구동신호(V3)를 출력하여 상기 모터(3)가 회전한다.The dehydration operation of the washing machine is described in FIG. 5. When the washing is completed and the air level is sensed, the microcomputer 1 suspends the driving of the motor 3 for one section (30 seconds) in FIG. The motor 3 rotates by outputting the motor drive signal V3 in two sections of 5 degrees.

이때, 속도제어부(6)가 기준전압(Vrefl)으로 조정하여 제5도의 3구간에서 저속으로 모터(3)를 회전시키고 이에따라 세탁물에 함유된 물이 거의 탈수되면 제5도 4구간 5구간 같이 상기 모터(3)의 속도를 상승시킨 후 고속(1600R.P.M)에 도달하면 제5도 6구간과 같이 기준전압(Vref2)를 조정하여 일정시간(5분)동안 탈수동작을 수행하고 완료한다.At this time, the speed controller 6 adjusts the reference voltage (Vrefl) to rotate the motor 3 at a low speed in the third section of FIG. 5 and accordingly the water contained in the laundry is almost dehydrated. When the speed of the motor 3 is increased and the high speed 1600R.PM is reached, the reference voltage Vref2 is adjusted as shown in FIG. 6, FIG. 6 to perform the dehydration operation for a predetermined time (5 minutes), and complete.

상기에서 상세히 설명한 바와같이 본 발명 세탁기의 탈수 제어방법 및 그 장치는 BLDC모터를 부착하여 탈수시 속도를 서서히 증가시킴으로써 비산음에 의한 모터의 급격한 온도상승 및 소음을 방지하고 시간제약없이 속도를 가변시킬 뿐아니라 일정탈수시간을 최대한 유지하여 탈수효율을 상승시키는 효과가 있다.As described in detail above, the dehydration control method and apparatus of the washing machine of the present invention attach a BLDC motor to gradually increase the speed during dehydration to prevent sudden temperature rise and noise of the motor due to scattering sound and to change the speed without time constraints. In addition, it maintains a constant dehydration time to increase the dehydration efficiency.

Claims (2)

세탁 후 탈수조의 공수위를 감지하면 일정시간 후 모터를 기준전압(Vrefl)에 따른 저속을 구동시키는 제1과정과, 상기 제 1과정을 지속한 후 모터의 회전속도를 점차 증가시켜 기준전압(Vref2)에 따른 고속으로 조정하는 제2과정과, 이 제2과정에 따른 모터의 속도가 고속이되면 소정시간 유지하여 본 탈수동작을 수행하는 제3과정을 특징으로 하는 세탁기의 탈수 제어방법.When the air level of the dehydration tank is sensed after washing, a first process of driving the motor at a low speed according to the reference voltage Vrefl after a predetermined time, and after increasing the rotation speed of the motor after continuing the first process, the reference voltage Vref2 And a third process of adjusting the motor at a high speed according to the second speed and a third process of maintaining the predetermined time when the speed of the motor according to the second process becomes a high speed to perform the dehydration operation. 탈수조의 공수위를 감지하는 수위감지제어부(2)와, 세탁동작에 따라 배수밸브의 개폐를 제어하는 배수밸브제어부(5)와, 모터(3)의 회전에 따라 FG신호를 검출하는 FG감지부(7)와, 상기 수지감지제어부(2)의 출력(Vl)을 점검하여 상기 배수밸브제어부(5) 및 모터(3)에 배수제어신호(V2) 및 모터구동신호(V2)를 출력하고 이에따라 상기 FG감지부(7)의 출력(V5)을 연산하여 분당회전수로 변환함으로써 속도제어신호(V4)를 출력하는 마이크로컴퓨터(1)와, 이 마이크로컴퓨터(1)의 출력(V4)을 펄스폭 변(Vrefl),(Vref2)과 비교함에 따라 상기 모터(3)의 속도를 제어하는 속도제어부(6)로 구성한 것을 특징으로 하는 세탁기의 탈수 제어장치.Water level detection control unit 2 for detecting the air level of the dehydration tank, drain valve control unit 5 for controlling the opening and closing of the drain valve in accordance with the washing operation, FG detection unit for detecting the FG signal in accordance with the rotation of the motor (3) (7) and output Vl of the resin detection control unit 2 to output the drainage control signal V2 and the motor drive signal V2 to the drain valve control unit 5 and the motor 3 and accordingly. The microcomputer 1 for outputting the speed control signal V4 by calculating the output V5 of the FG detecting unit 7 and converting it into revolutions per minute, and pulses the output V4 of the microcomputer 1. Dehydration control device for a washing machine, characterized in that the speed controller (6) for controlling the speed of the motor (3) in comparison with the width side (Vrefl), (Vref2).
KR1019920016231A 1992-09-05 1992-09-05 Control method and device for dehydration KR950004266B1 (en)

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