KR20080113619A - Apparatus for sensing power supply voltage of washing machine - Google Patents

Apparatus for sensing power supply voltage of washing machine Download PDF

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Publication number
KR20080113619A
KR20080113619A KR1020070062333A KR20070062333A KR20080113619A KR 20080113619 A KR20080113619 A KR 20080113619A KR 1020070062333 A KR1020070062333 A KR 1020070062333A KR 20070062333 A KR20070062333 A KR 20070062333A KR 20080113619 A KR20080113619 A KR 20080113619A
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South Korea
Prior art keywords
voltage
washing machine
power supply
power
supply voltage
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KR1020070062333A
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Korean (ko)
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KR101410753B1 (en
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백종덕
사토루 마쯔모토
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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a horizontal 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/008—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

An apparatus for sensing power supply voltage of a washing machine is provided to achieve stability of operation by detecting power voltage fed into a washing machine and setting up range of voltage where the operation of a washing machine operates stably. An apparatus for sensing power supply voltage of washing machine comprises a power sensor(300), and a control part(400). The power sensor detects power supply voltage applied to a washing machine. After comparing the detected power voltage and the set voltage value, in case the power voltage is away from the voltage set up range, the control part cuts off power voltage applied to a washing machine.

Description

세탁기의 전원전압 감지장치{Apparatus for sensing power supply voltage of washing machine}Apparatus for sensing power supply voltage of washing machine}

도 1은 본 발명의 일실시예에 의한 세탁기의 구성을 나타낸 단면도이다.1 is a cross-sectional view showing the configuration of a washing machine according to an embodiment of the present invention.

도 2는 본 발명의 일실시예에 의한 세탁기의 전원전압 감지장치의 회로 구성도이다.2 is a circuit diagram illustrating a power supply voltage detection device of a washing machine according to an embodiment of the present invention.

도 3은 본 발명의 일실시예에 의한 세탁기의 전원전압 측정값을 나타낸 표이다.Figure 3 is a table showing the measured voltage value of the washing machine according to an embodiment of the present invention.

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

15 : 모터 16 : 세탁히터15: motor 16: washing heater

19b : 배수밸브 19c : 배수펌프19b: drain valve 19c: drain pump

22 : 급수밸브 100 : 상용전원22: water supply valve 100: commercial power

200 : 전원공급부 300 : 전원감지부200: power supply unit 300: power detection unit

400 : 제어부400: control unit

본 발명은 세탁기의 전원전압 감지장치에 관한 것으로, 더욱 상세하게는 세 탁기에 인가되는 전원전압을 감지하여 세탁기의 동작 안정성을 확보할 수 있도록 하는 세탁기의 전원전압 감지장치에 관한 것이다.The present invention relates to a power supply voltage sensing device for a washing machine, and more particularly, to a power supply voltage sensing device for detecting a power supply voltage applied to a washing machine to ensure operating stability of the washing machine.

일반적으로, 세탁기(통상, 드럼세탁기)는 급수밸브의 동작에 따라 수조 내부로 급수가 이루어지면 급수된 세탁수와 세제가 세탁물에 잘 섞이도록 모터의 구동에 따라 세탁행정을 수행한 후, 세탁이 완료되면 배수펌프를 구동시키고 배수밸브를 열어 수조 내부의 세탁수를 배수하는 일련의 동작을 거친다.In general, when a washing machine (usually, a drum washing machine) is supplied with water into a water tank according to an operation of a water supply valve, the washing operation is performed by driving a motor so that the supplied wash water and detergent are mixed well with the laundry. When complete, the drain pump is driven and the drain valve is opened to drain the wash water inside the tank.

이러한 일련의 세탁기 동작을 위해서는 급수밸브, 모터, 배수펌프, 배수밸브 등을 포함한 각종 부품에 안정화된 구동전원(DC전압)을 공급해야 하며, 안정화된 구동전원을 얻기 위해서는 세탁기에 인가되는 입력 전원전압(상용 교류전원)이 안정되어야 한다. 그러나 전원사정이 열악한 지역(예를 들어, 오지나 후진국 등의 전원 열악 지역)에서는 입력 전원전압이 급격하게 상승하거나 하강하는 경우가 자주 발생하여 안정화된 구동전원을 얻기가 어렵고, 결국 이러한 입력 전원전압의 이상(異常) 변동(특히, 과전압의 경우)은 부품의 신뢰성에 영향을 미쳐 세탁기의 동작이 안정되게 이루어지지 못하는 문제가 있다.In order to operate such a series of washing machines, stabilized driving power (DC voltage) must be supplied to various parts including a water supply valve, a motor, a drain pump, and a drain valve, and an input power voltage applied to the washing machine to obtain a stabilized driving power. (Commercial AC power supply) should be stable. However, in areas with poor power supply (for example, in poor areas such as remote areas and poor countries), input power voltages often rise or fall rapidly, making it difficult to obtain stabilized driving power. Abnormal fluctuations (particularly in the case of overvoltage) affect the reliability of the parts, and thus there is a problem that the operation of the washing machine is not made stable.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 세탁기의 동작이 안정되게 이루어지는 전압의 범위를 설정하고 세탁기에 인가되는 전원전압을 감지하여 전원전압의 이상(異常) 시 세탁기의 동작 안정성을 확보할 수 있도록 한 세탁기의 전원전압 감지장치를 제공하는데 있다.Therefore, the present invention is to solve the conventional problems as described above, the object of the present invention is to set the range of the voltage is made stable operation of the washing machine and to detect the power supply voltage applied to the washing machine abnormality of the power supply voltage (異常It is to provide a power supply voltage detection device for a washing machine to ensure the operation stability of the washing machine.

상기 목적을 달성하기 위하여 본 발명은 세탁기에 인가되는 전원전압을 감지하는 전원감지부; 상기 감지된 전원전압을 설정된 전압값과 비교하여 상기 전원전압이 상기 전압값의 설정범위를 벗어나는 경우 상기 세탁기에 인가되는 전원전압을 차단하는 제어부를 포함한다.In order to achieve the above object, the present invention provides a power detecting unit for sensing a power supply voltage applied to a washing machine; And a control unit which blocks the power voltage applied to the washing machine when the power voltage is out of a setting range of the voltage value by comparing the sensed power voltage with a set voltage value.

또한, 상기 전원감지부는 교류로 공급되는 상기 전원전압을 정류하는 다이오드와, 상기 정류된 직류전압을 감압하는 저항과, 상기 감압된 직류전압을 평활하는 전해콘덴서와, 상기 평활된 직류전압을 증폭하여 상기 제어부에 입력하는 증폭기를 포함한다.In addition, the power detecting unit amplifies the diode rectifying the power supply voltage supplied to AC, a resistor for reducing the rectified DC voltage, an electrolytic capacitor for smoothing the reduced DC voltage, and the smoothed DC voltage It includes an amplifier for input to the control unit.

또한, 상기 증폭기는 0~5V 사이의 직류 전압값을 제어부에 입력하는 것을 특징으로 한다.In addition, the amplifier is characterized in that for inputting a DC voltage value between 0 ~ 5V to the controller.

또한, 상기 제어부는 상기 세탁기의 동작이 안정되게 이루어지는 전원전압의 범위를 상기 전압값의 설정범위로 정하는 것을 특징으로 한다.The control unit may set a range of a power supply voltage at which the operation of the washing machine is stable as a setting range of the voltage value.

또한, 상기 전압값의 설정범위는 상기 전원전압에 대응하는 직류전압의 측정값인 것을 특징으로 한다.In addition, the setting range of the voltage value is characterized in that the measured value of the DC voltage corresponding to the power supply voltage.

이하, 본 발명의 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일실시예에 의한 세탁기의 구성을 나타낸 단면도이다.1 is a cross-sectional view showing the configuration of a washing machine according to an embodiment of the present invention.

도 1에서, 본 발명의 세탁기는 세탁수의 담수를 위한 것으로 본체(10)의 내부에 설치되는 드럼형의 수조(11)와, 상기 수조(11)의 내부에 회전 가능하게 설치되는 회전드럼(12)을 포함한다.In Figure 1, the washing machine of the present invention is for the fresh water of the wash water drum type water tank 11 is installed inside the main body 10, and a rotating drum rotatably installed in the water tank 11 ( 12).

상기 수조(11)는 입구(11b)가 형성된 전면부(11a)가 후면부(11c)보다 높은 위치가 되도록 전체적으로 세탁기의 설치면에 대하여 소정각도(α) 경사를 이루도록 설치되고, 수조(11)의 내부에 설치되는 회전드럼(12)은 수조(11)와 동일한 형태로 입구(12b)가 형성된 전면부(12a)가 그 후면부(12c)보다 높은 위치가 되도록 경사지게 설치된다.The water tank 11 is installed so as to be inclined at a predetermined angle α with respect to the installation surface of the washing machine as a whole so that the front portion 11a on which the inlet 11b is formed is higher than the rear portion 11c. The rotating drum 12 installed therein is inclined so that the front portion 12a having the inlet 12b formed in the same shape as the water tank 11 is positioned higher than the rear portion 12c.

즉, 회전드럼(12)은 입구(12b)가 형성된 전면부(12a)가 전방 상부를 향하는 형태로 그 회전중심선(　A　)이 세탁기의 설치면에 대하여 소정각도(α) 경사를 이루도록 설치된다. 이때 회전드럼(12)은 그 후면부(12c) 중심에 결합되는 회전축(13)이 수조(11)의 후면 중심부에 회전 가능하게 지지됨으로써 수조(11)의 내부에서 회전 가능한 상태가 된다.That is, the rotating drum 12 is provided such that the front portion 12a on which the inlet 12b is formed faces the front upper portion so that the center of rotation of the rotating drum 12A is inclined at a predetermined angle α with respect to the installation surface of the washing machine. At this time, the rotating drum 12 is rotatably supported in the center of the rear of the water tank 11 by the rotating shaft 13 coupled to the center of the rear portion 12c is rotatable inside the water tank 11.

또, 회전드럼(12)의 둘레에는 다수의 통공(12d)이 형성되고, 회전드럼(12)의 내면에는 회전드럼(12)이 회전할 때 세탁물의 상승 및 낙하가 이루어지도록 하는 복수의 리프터(14)가 설치된다.In addition, a plurality of through holes 12d are formed around the rotating drum 12, and a plurality of lifters are formed on the inner surface of the rotating drum 12 to allow the laundry to rise and fall when the rotating drum 12 rotates. 14) is installed.

상기 수조(11)의 후면부(11c) 외측에는 세탁, 헹굼 및 탈수동작을 수행하도록 회전드럼(12)과 연결된 회전축(13)을 회전시키는 구동장치로 모터(15)가 설치되고, 상기 수조(11)의 하측 내부에는 수조(11) 내부로 공급된 세탁수를 가열하는 세탁히터(16)가 설치된다.On the outside of the rear portion 11c of the water tank 11, a motor 15 is installed as a driving device for rotating the rotating shaft 13 connected to the rotating drum 12 to perform washing, rinsing, and dehydration operations. In the lower side of the) is provided a laundry heater 16 for heating the wash water supplied into the water tank (11).

상기 모터(15)는 수조(11) 후면부(11c)에 고정되는 고정자(15a)와, 이 고정자(15a)의 외곽에 회전 가능한 상태로 배치되는 회전자(15b), 그리고 회전자(15b)와 회전축(13)을 연결하는 회전판(15c)으로 구성된다.The motor 15 includes a stator 15a fixed to the rear portion 11c of the water tank 11, a rotor 15b disposed in a rotatable state outside the stator 15a, and a rotor 15b. It consists of a rotating plate 15c which connects the rotating shaft 13.

또, 상기 본체(10) 전면부에는 회전드럼(12)의 내부로 세탁물을 넣거나 내부 의 세탁물을 꺼낼 수 있도록 회전드럼(12)의 입구(12b) 및 수조(11)의 입구(11b)와 대응하는 위치에 개방된 입구(17b)가 형성되고, 상기 입구(17b)에는 입구(17b)를 개폐하는 도어(17)가 설치된다.In addition, the front part of the main body 10 corresponds to the inlet 12b of the rotating drum 12 and the inlet 11b of the water tank 11 so that the laundry can be put into the inside of the rotating drum 12 or the laundry can be taken out therein. An inlet 17b is formed at an open position, and the door 17b is provided at the inlet 17b to open and close the inlet 17b.

상기 수조(11)의 상부에는 세제를 공급하기 위한 세제공급장치(18)와, 세탁수를 공급하기 위한 급수장치(20)가 설치되며, 수조(11)의 하부에는 수조(11) 내부의 물을 배수시키기 위한 것으로 배수관(19a), 배수밸브(19b), 배수펌프(19c)를 포함하는 배수장치(19)가 설치된다.A detergent supply device 18 for supplying detergent and a water supply device 20 for supplying washing water are installed at an upper portion of the water tank 11, and water in the water tank 11 is provided at a lower portion of the water tank 11. In order to drain the water, a drain 19 including a drain pipe 19a, a drain valve 19b, and a drain pump 19c is provided.

상기 세제공급장치(18)는 내부가 다수의 공간으로 구획되어 있으며, 사용자가 각 공간에 세제 및 헹굼제를 투입하기 용이하도록 본체(10)의 전면부 쪽에 설치된다.The detergent supply device 18 is divided into a plurality of spaces inside, and is installed on the front side of the main body 10 so that the user can easily put detergent and rinsing agent in each space.

상기 급수장치(20)는 수조(11) 쪽으로 물을 공급하는 급수관(21) 및 이 급수관(21)의 급수를 제어하도록 급수관(21)에 설치되는 급수밸브(22)를 구비한다. 이때 급수관(21)은 외부로부터 공급되는 물이 세제공급장치(18) 쪽으로 공급될 수 있도록 세제공급장치(18)와 연결된다. 그리고 세제공급장치(18)와 수조(11)사이에는 세제공급장치(18)를 거친 물이 수조(11)로 공급될 수 있도록 별도의 연결관(23)이 설치되고, 상기 연결관(23)의 출구에는 급수노즐(24)이 설치된다. 이는 수조(11)의 내부로 공급되는 물이 세제공급장치(18)를 경유하도록 함으로서 세제공급장치(18) 내부의 세제가 물에 용해된 상태에서 수조(11)로 공급될 수 있도록 한 것이다.The water supply device 20 includes a water supply pipe 21 for supplying water toward the water tank 11 and a water supply valve 22 installed in the water supply pipe 21 to control the water supply of the water supply pipe 21. At this time, the water supply pipe 21 is connected to the detergent supply device 18 so that water supplied from the outside can be supplied toward the detergent supply device 18. In addition, a separate connecting pipe 23 is installed between the detergent supply device 18 and the water tank 11 so that water passing through the detergent supply device 18 can be supplied to the water tank 11, and the connection pipe 23 is provided. At the outlet of the water supply nozzle 24 is installed. This allows the water supplied into the water tank 11 to pass through the detergent supply device 18 so that the detergent in the detergent supply device 18 can be supplied to the water tank 11 in a state in which the detergent is dissolved in water.

도 2는 본 발명의 일실시예에 의한 세탁기의 전원전압 감지장치의 회로 구성도이다.2 is a circuit diagram illustrating a power supply voltage detection device of a washing machine according to an embodiment of the present invention.

도 2에서, 세탁기에 인가되는 전원전압을 감지하기 위한 회로는 입력 전원전압을 정류 및 평활하여 구동전원(12Vdc)을 공급하는 전원공급부(200)와, 입력 전원전압(VAC)을 감지하여 입력 전원전압(VAC)의 측정값(VDC)을 구하는 전원감지부(300)와, 감지된 입력 전원전압(VAC)의 측정값(VDC)을 설정된 전압값과 비교하여 전원전압(VAC)의 이상(異常) 여부를 판단하고 세탁기에 인가되는 전원전압(VAC)을 제어하는 제어부(400)를 포함하여 구성된다.In FIG. 2, a circuit for detecting a power supply voltage applied to a washing machine includes a power supply unit 200 for rectifying and smoothing an input power supply voltage to supply a driving power supply 12Vdc, and an input power supply by sensing an input power supply voltage VAC. An abnormality of the power supply voltage VAC is obtained by comparing the power detection unit 300 for obtaining the measured value VDC of the voltage VAC and the measured value VDC of the detected input power supply voltage VAC with the set voltage value. It is configured to include a control unit 400 to determine whether or not) and to control the power supply voltage (VAC) applied to the washing machine.

상기 전원공급부(200)는 220V 60Hz 등의 교류로 공급되는 상용전원(100)의 전원전압을 전파 정류하는 정류기(202)와, 상기 정류기(202)에 접속되어 정류된 직류전압을 평활하는 평활용 전해콘덴서(204)와, 상기 전해콘덴서(204)에 의해 평활된 직류전압을 축적하여 모터(15), 배수펌프(19c), 배수밸브(19b), 급수밸브(22) 등을 포함한 각종 부품의 구동전원(12Vdc)을 공급하는 DC전원부(206)를 포함한다.The power supply unit 200 is a rectifier 202 for full-wave rectifying the power supply voltage of the commercial power supply 100 supplied with alternating current, such as 220V 60Hz, and smoothing the rectified DC voltage connected to the rectifier 202 Accumulated DC voltage smoothed by the electrolytic capacitor 204 and the electrolytic capacitor 204, and various components including the motor 15, the drain pump 19c, the drain valve 19b, the water supply valve 22, and the like. And a DC power supply unit 206 for supplying driving power 12Vdc.

상기 전원감지부(300)는 220V 60Hz 등의 교류로 공급되는 상용전원(100)의 전원전압을 반파 정류하는 다이오드(302)와, 다이오드(302)를 통해 반파 정류된 직류전압을 감압하는 감압저항(304,306)과, 감압저항(304,306)에 의해 감압된 직류전압을 분압하는 분압저항(308,310)과, 분압저항(308,310)에 의해 분압된 직류전압을 평활하는 전해콘덴서(312)와, 전해콘덴서(312)에 의해 평활된 직류전압을 증폭하는 증폭기(314)와, 증폭기(314)의 이득을 조정하는 저항(316,318)과, 증폭된 직류전압에 실려 있는 노이즈 성분을 제거하는 저항(320) 및 콘덴서(322)와, 증폭된 직류전압의 전위레벨을 안정화시키는 제너 다이오드(324)를 포함한다.The power detecting unit 300 is a diode 302 for half-wave rectifying the power supply voltage of the commercial power supply 100 supplied with an alternating current, such as 220V 60Hz, and a pressure-sensitive resistor for reducing the half-wave rectified DC voltage through the diode 302. (304,306), voltage dividing resistors (308,310) for dividing the DC voltage reduced by the pressure reducing resistors (304,306), electrolytic capacitor (312) for smoothing the DC voltage divided by the voltage dividing resistors (308,310), and electrolytic capacitor ( Amplifier 314 for amplifying the DC voltage smoothed by 312, resistors 316 and 318 for adjusting the gain of amplifier 314, resistor 320 and capacitor for removing noise components contained in the amplified DC voltage. 322 and a zener diode 324 for stabilizing the potential level of the amplified DC voltage.

상기 제어부(400)는 세탁기의 동작이 안정되게 이루어지는 전압값의 범위를 롬 테이블상에 미리 설정해두는 마이컴으로서, 전원감지부(300)에 의해 감지된 전원전압이 미리 설정해둔 전압값의 범위를 벗어나는 경우에는 전원전압을 차단하고, 전원전압이 설정범위에 들어오는 경우에만 세탁기가 동작되도록 하여 세탁기의 동작 안정성을 확보한다.The control unit 400 is a microcomputer that presets a range of voltage values at which the operation of the washing machine is stable on the ROM table, and the power supply voltage sensed by the power detecting unit 300 is out of the range of preset voltage values. In this case, the power supply voltage is cut off, and the washing machine is operated only when the power supply voltage falls within the setting range, thereby ensuring operational stability of the washing machine.

이하, 상기와 같이 구성된 세탁기의 전원전압 감지장치의 동작과정 및 작용효과를 설명한다.Hereinafter, an operation process and an effect of the power supply voltage sensing device of the washing machine configured as described above will be described.

도 1에서, 회전드럼(12)의 내부에 세탁물을 넣고 사용자가 세탁물의 소재에 따라 세탁코스와 세탁온도, 탈수rpm, 헹굼 추가 등의 운전정보를 선택하면, 제어부(400)는 선택된 운전정보에 따라 예비세탁, 본 세탁 및 헹굼 행정을 순차적으로 진행하는데, 이러한 예비세탁, 본 세탁 및 헹굼 행정은 일반적인 세탁기 행정과 동일하므로 일반적인 세탁기 행정을 간략하게 설명하면 아래와 같다.In FIG. 1, when the laundry is put into the rotating drum 12 and the user selects the washing course and the driving information such as washing temperature, dehydration rpm, and rinsing, depending on the material of the washing machine, the controller 400 controls the selected driving information. The pre-washing, main washing and rinsing operations are sequentially performed. The pre-washing, main washing and rinsing operations are the same as those of the general washing machine, so the general washing machine stroke will be briefly described as follows.

급수밸브(22)의 동작에 따라 수조(11) 내부로 급수가 이루어지면 모터(15)의 구동에 의해 급수된 세탁수와 세제가 세탁물에 잘 섞이도록 하면서 세탁히터(16)의 구동에 의해 세탁온도를 조절하여 세탁물에 적절한 세탁을 수행한 후, 세탁이 완료되면 배수펌프(19c)를 구동시키고 배수밸브(19b)를 열어 수조(11) 내부의 물 즉, 세탁수를 배수하는 일련의 동작을 거친다.When water is supplied into the water tank 11 according to the operation of the water supply valve 22, the washing water and the detergent supplied by the driving of the motor 15 are mixed well with the laundry, and the washing is driven by the washing heater 16. After washing the laundry properly by adjusting the temperature, when washing is completed, a series of operations of driving the drain pump 19c and opening the drain valve 19b to drain the water in the water tank 11, that is, the wash water, is performed. Rough

이러한 일련의 세탁기 동작을 위해서는 모터(15), 세탁히터(16), 배수밸브(19b), 배수펌프(19c), 급수밸브(22) 등을 구동하기 위한 구동전원(12Vdc)을 제어부(400)에서 필요에 따라 적절한 시점에 공급해야 하는데, 본 발명은 이러한 일련의 세탁기 동작순서에 따라 공급되는 구동전원(12Vdc)을 안정되게 공급하기 위해 세탁기에 인가되는 입력 전원전압을 감지하여 세탁기의 동작 안정성을 확보하도록 하는 회로를 제공한다.For the series of washing machines, the control unit 400 controls a driving power source 12Vdc for driving the motor 15, the washing heater 16, the drain valve 19b, the drain pump 19c, the water supply valve 22, and the like. In order to supply at a suitable time as needed, the present invention detects the input power voltage applied to the washing machine in order to stably supply the driving power (12Vdc) supplied according to the operation sequence of the washing machine to improve the operational stability of the washing machine. Provide a circuit to secure it.

도 2에서, 세탁기에 상용전원(100)이 투입되면, 교류(예를 들어, 220V 60Hz)로 공급되는 상용전원(100)의 입력 전원전압을 전원공급부(200)의 정류기(202)에서 전파 정류하고, 이를 정류기(202)에 접속된 전해콘덴서(204)에서 평활하여 직류로 변환하여 출력한다.In FIG. 2, when the commercial power supply 100 is input to the washing machine, the input power supply voltage of the commercial power supply 100 supplied with alternating current (eg, 220 V 60 Hz) is rectified by the rectifier 202 of the power supply unit 200. Then, this is smoothed by the electrolytic capacitor 204 connected to the rectifier 202, converted into direct current and output.

상기 전해콘덴서(204)로부터 출력되는 직류전압은 DC전원부(206)에 축적되어 모터(15), 배수펌프(19c), 배수밸브(19b), 급수밸브(22) 등을 포함한 각종 부품에 구동전원(12Vdc)을 공급한다.The DC voltage output from the electrolytic capacitor 204 is accumulated in the DC power supply unit 206 and is driven to various components including the motor 15, the drain pump 19c, the drain valve 19b, the water supply valve 22, and the like. Supply (12Vdc).

이때, 공급되는 구동전원(12Vdc)을 안정화하기 위해서 세탁기에 인가되는 입력 전원전압을 전원감지부(300)에서 감지한다.At this time, in order to stabilize the supplied driving power (12Vdc), the power supply sensing unit 300 detects an input power supply voltage applied to the washing machine.

이를 보다 구체적으로 설명하면, 교류(예를 들어, 220V 60Hz)로 공급되는 상용전원(100)의 전원전압(VAC)을 전원감지부(300)의 다이오드(302)에서 반파 정류하고, 다이오드(302)를 통해 반파 정류된 직류전압은 감압저항(304,306)을 통해 감압된 후 분압저항(308,310)과 전해콘덴서(312)를 통해 증폭기(314)에 입력된다.In more detail, the power supply voltage VAC of the commercial power supply 100 supplied with alternating current (for example, 220V 60Hz) is half-wave rectified by the diode 302 of the power detection unit 300, and the diode 302 The half-wave rectified DC voltage is reduced through the pressure reducing resistors 304 and 306 and then input to the amplifier 314 through the voltage dividing resistors 308 and 310 and the electrolytic capacitor 312.

따라서, 증폭기(314)에서는 전해콘덴서(312)에 의해 평활된 직류전압을 증폭하여 제어부(400)의 입력단으로 0~5V 사이의 측정값(VDC)을 입력한다.Therefore, the amplifier 314 amplifies the DC voltage smoothed by the electrolytic capacitor 312 and inputs a measured value VDC between 0 and 5V to the input terminal of the controller 400.

이에 따라, 제어부(400)는 세탁기의 동작이 안정되게 이루어지는 전압값의 범위(약 330VAC 이하, 즉 4.06VDC 이하)를 미리 설정해둔 상태에서 전원감지부(300)에 의해 감지된 입력 전원전압(VAC)의 측정값(VDC)이 설정범위를 벗어났는 지 여부를 판단한다.Accordingly, the control unit 400 detects the input power voltage (VAC) detected by the power detecting unit 300 in a state in which the range of the voltage value (about 330 VAC or less, that is, 4.06 VDC or less) in which the operation of the washing machine is stable is set in advance. It is judged whether the measured value (VDC) of) is out of setting range.

판단결과, 입력 전원전압(VAC)의 측정값(VDC)이 설정범위를 벗어난 경우 세탁기에 인가되는 전원전압(VAC)을 차단하여 입력 전원전압(VAC)의 갑작스런 상승이나 하강의 경우 전원전압(VAC)의 이상(異常;특히, 과전압의 경우)으로 인한 부품의 신뢰성 문제를 방지하도록 하였다.As a result of determination, when the measured value (VDC) of the input power voltage (VAC) is out of the setting range, the power voltage (VAC) applied to the washing machine is cut off, and in the case of a sudden rise or fall of the input power voltage (VAC), the power voltage (VAC) The reliability problem of components due to abnormalities (especially in the case of overvoltage) is prevented.

따라서, 입력 전원전압(VAC)의 측정값(VDC)이 설정범위에 들어오는 경우에만 세탁기가 동작되도록 하여 세탁기의 동작 안정성을 확보할 수 있게 된다.Therefore, the washing machine is operated only when the measured value VDC of the input power supply voltage VAC falls within the setting range, thereby ensuring the operational stability of the washing machine.

도 3은 본 발명의 일실시예에 의한 세탁기의 전원전압 측정값을 나타낸 표로서, 세탁기에 인가되는 입력 전원전압(VAC)을 전원감지부(300)에서 감지하는 경우 제어부(400)에 입력되는 측정값(VDC)을 나타낸 것이다.3 is a table illustrating measured voltage values of a washing machine according to an embodiment of the present invention, which is input to the controller 400 when the power detecting unit 300 detects an input power voltage VAC applied to the washing machine. The measured value (VDC) is shown.

도 3에서 알 수 있듯이, 제어부(400)는 세탁기의 동작이 안정되게 이루어지는 전압값의 범위(전원전압 약 330VAC 이하일 때 측정값 4.06VDC 이하)를 미리 설정해 두었다가 세탁기에 인가되는 입력 전원전압(VAC)의 측정값(VDC)과 비교하여 입력 전원전압(VAC)의 측정값(VDC)이 설정된 전압값의 범위를 벗어나는 경우 전원전압의 이상(異常)으로 판단하고, 세탁기에 인가되는 전원전압을 차단하도록 함으로써 전원사정이 열악한 지역에서도 세탁기의 동작 안정성을 확보할 수 있도록 하였다.As can be seen in FIG. 3, the control unit 400 presets a range of voltage values (measured value of 4.06 VDC or less when the power supply voltage is about 330 VAC or less) in which the operation of the washing machine is stable, and then inputs an input power voltage (VAC) applied to the washing machine. If the measured value (VDC) of the input power voltage (VAC) is out of the range of the set voltage value compared to the measured value (VDC) of, it is determined that the power supply voltage is abnormal and cuts off the power voltage applied to the washing machine. As a result, the operation stability of the washing machine can be secured even in a poor power supply area.

상기의 설명에서와 같이, 본 발명에 의한 세탁기의 전원전압 감지장치에 의하면, 세탁기의 동작이 안정되게 이루어지는 전압의 범위를 설정하고 세탁기에 인 가되는 전원전압을 감지하여 전원전압이 설정범위를 벗어나는 경우에는 전원전압을 차단하고, 전원전압이 설정범위에 해당하는 경우에만 세탁기가 동작되도록 하여 세탁기의 동작 안정성을 확보할 수 있다는 효과가 있다.As described above, according to the power supply voltage detection device of the washing machine according to the present invention, the power supply voltage is out of the setting range by setting the range of the voltage to which the operation of the washing machine is stable and detecting the power supply voltage applied to the washing machine. In this case, the power supply voltage is cut off, and the washing machine is operated only when the power supply voltage is within the setting range, thereby ensuring the operational stability of the washing machine.

Claims (5)

세탁기에 인가되는 전원전압을 감지하는 전원감지부;A power detector detecting a power voltage applied to the washing machine; 상기 감지된 전원전압을 설정된 전압값과 비교하여 상기 전원전압이 상기 전압값의 설정범위를 벗어나는 경우 상기 세탁기에 인가되는 전원전압을 차단하는 제어부를 포함하는 세탁기의 전원전압 감지장치.And a control unit which blocks the power voltage applied to the washing machine when the power voltage is out of a setting range of the voltage value by comparing the detected power voltage with a set voltage value. 제 1항에 있어서,The method of claim 1, 상기 전원감지부는 교류로 공급되는 상기 전원전압을 정류하는 다이오드와, 상기 정류된 직류전압을 감압하는 저항과, 상기 감압된 직류전압을 평활하는 전해콘덴서와, 상기 평활된 직류전압을 증폭하여 상기 제어부에 입력하는 증폭기를 포함하는 세탁기의 전원전압 감지장치.The power detecting unit amplifies the diode for rectifying the power supply voltage supplied to AC, a resistor for reducing the rectified DC voltage, an electrolytic capacitor for smoothing the reduced DC voltage, and the smoothed DC voltage to amplify the controller. Power supply voltage sensing device of the washing machine comprising an amplifier input to the. 제 2항에 있어서,The method of claim 2, 상기 증폭기는 0~5V 사이의 직류 전압값을 제어부에 입력하는 세탁기의 전원전압 감지장치.The amplifier is a power supply voltage detection device for a washing machine for inputting a DC voltage value between 0 ~ 5V to the control unit. 제 1항에 있어서,The method of claim 1, 상기 제어부는 상기 세탁기의 동작이 안정되게 이루어지는 전원전압의 범위를 상기 전압값의 설정범위로 정하는 세탁기의 전원전압 감지장치.The control unit is a power supply voltage sensing device of the washing machine for setting the range of the power supply voltage to the stable operation of the washing machine as the setting range of the voltage value. 제 4항에 있어서,The method of claim 4, wherein 상기 전압값의 설정범위는 상기 전원전압에 대응하는 직류전압의 측정값인 세탁기의 전원전압 감지장치.The setting range of the voltage value is a power supply voltage sensing device of the washing machine is a measured value of the DC voltage corresponding to the power supply voltage.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011138119A1 (en) * 2010-05-04 2011-11-10 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance and method for operating a domestic appliance
KR101542497B1 (en) * 2009-02-19 2015-08-06 엘지전자 주식회사 Apparatus and method for cutting off overvoltage of dryer

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KR0132033B1 (en) * 1993-08-24 1998-04-20 배순훈 Over-current preventing device for a washing machine
KR100425110B1 (en) * 2001-10-25 2004-03-30 엘지전자 주식회사 Method and apparatus for controlling clutch of inverter washing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101542497B1 (en) * 2009-02-19 2015-08-06 엘지전자 주식회사 Apparatus and method for cutting off overvoltage of dryer
WO2011138119A1 (en) * 2010-05-04 2011-11-10 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance and method for operating a domestic appliance

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