KR940009421A - Earth leakage breaker for electric washing machine - Google Patents

Earth leakage breaker for electric washing machine Download PDF

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Publication number
KR940009421A
KR940009421A KR1019920019955A KR920019955A KR940009421A KR 940009421 A KR940009421 A KR 940009421A KR 1019920019955 A KR1019920019955 A KR 1019920019955A KR 920019955 A KR920019955 A KR 920019955A KR 940009421 A KR940009421 A KR 940009421A
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KR
South Korea
Prior art keywords
output
washing machine
power
circuit
short circuit
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KR1019920019955A
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Korean (ko)
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KR0161016B1 (en
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장봉안
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윤종용
삼성전자 주식회사
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Priority to KR1019920019955A priority Critical patent/KR0161016B1/en
Publication of KR940009421A publication Critical patent/KR940009421A/en
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Publication of KR0161016B1 publication Critical patent/KR0161016B1/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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/10—Power supply arrangements, e.g. stand-by circuits
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Inverter Devices (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

본 발명은 전기세탁기에 누설전류가 발생되면 이를 감지하여 입력전원을 차단하는 세탁기용 누전차단장치에 관한 것으로써, 교류전원을 입력단자로부터 입력되는 상용교류 전압을 두 개의 전원으로 분리시켜서 제1브리지 정류회로 및 제2브리지 정류회로에서 각각 전파정류하여 출력하는 전원수단과, 세탁기의 누전발생시에 누전을 감지하는 누전감지수단과, 상기 누전감지수단에서 감지한 신호를 일정한 레벨로 증폭시키는 증폭수단과, 상기 증폭수단에서 증폭된 출력신호를 받아 전체기능을 제어하는 마이크로컴퓨터와, 상기 증폭수단의 출력신호를 받음과 동시에 상기 마이크로컴퓨터로부터 출력되는 세어신호를 받아서 전원스위치의 차단제어 신호를 출력하는 구동수단과, 상기 구동수단으로부터 출력되는 차단제어신호를 받아서 전원스위치를 차단하는 전원차단수단과, 누전발생시에 상기 마이크로컴퓨터로부터 출력되는 제어신호를 받아서 누전임을 표시하는 디스플레이수단으로 이루어진 것을 특징으로 한다.The present invention relates to a ground fault interrupting device for a washing machine that detects a leakage current generated in an electric washing machine and cuts off input power. The first bridge is provided by separating an AC power into two power sources. Power supply means for full-wave rectifying and outputting the rectifying circuit and the second bridge rectifying circuit, a short circuit detecting means for detecting a short circuit when a short circuit occurs in the washing machine, amplifying means for amplifying the signal detected by the ground fault detecting means to a predetermined level; And a microcomputer that receives the output signal amplified by the amplifying means and controls the whole function, and receives the output signal of the amplifying means and receives the count signal output from the microcomputer and outputs a cutoff control signal of the power switch. Means and a power switch receiving a cutoff control signal output from the driving means; And a blocking means for blocking power and, wherein the receiving the control signal outputted from the microcomputer in the event of a short circuit consisting of a display means for indicating that a short circuit.

Description

전기세탁기용 누전차단장치Earth leakage breaker for electric washing machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 일실시예에 따른 전기세탁기용 누전차단장치의 개략적인 블록도,1 is a schematic block diagram of a ground fault interrupting device for an electric washing machine according to an embodiment of the present invention;

제2도는 본 발명의 일실시예에 있어서 전기세탁기용 누전차단장치의 상세한 회로도.FIG. 2 is a detailed circuit diagram of an earth leakage breaker for an electric washing machine according to one embodiment of the present invention. FIG.

Claims (7)

교류전원을 입력단자로부터 입력되는 상용교류 전압을 두 개의 전원으로 분리시켜서 제1브리지 정류회로 및 제2브리지 정류회로에서 각각 전파정류하여 출력하는 전원수단과, 세탁기의 누전발생시에 누전을 감지하는 누전감지수단과, 상기 누전감지수단에서 감지한 신호를 일정한 레벨로 증폭시키는 증폭수단과, 상기 증폭수단에서 증폭된 출력신호를 받아 전체기능을 제어하는 마이크로컴퓨터와, 상기 증폭수단의 출력신호를 받음과 동시에 상기 마이크로컴퓨터로부터 출력되는 제어신호를 받아서 전원스위치의 차단제어신호를 출력하는 구동수단과,상기 구동수단으로부터 출력되는 차단제어신호를 받아서 전원스위치를 차단하는 전원차단수단과, 누전발생시에상기 마이크로컴퓨터로 부터 출력되는 제어신호를 받아서 누전임을 표시하는 디스플레이수단으로 이루어진 것을 특징으로 하는 전기세탁기용 누전차단장치.Power supply means for separating the AC power from the commercial AC voltage input from the input terminal into two power sources, and rectifying and outputting each of the first and second bridge rectifier circuits. A sensing means, an amplifying means for amplifying the signal detected by the ground fault detecting means to a predetermined level, a microcomputer for controlling the whole function by receiving the output signal amplified by the amplifying means, receiving an output signal of the amplifying means, and Drive means for receiving a control signal output from the microcomputer at the same time and outputting a cutoff control signal of a power switch, a power cutoff means for receiving a cutoff control signal output from the drive means and shutting off a power switch; Display indicating short circuit by receiving control signal from computer An electric leakage breaking device for an electric washing machine, comprising a ray means. 제1항에 있어서, 전원수단은 입력되는 교류전압을 DC12V의 레벨로 정류해서 마이크로컴퓨터에 출력하는 제1브리지 정류회로(12)와, DC12V 내지 DC20V 내지 DC20V의 레벨로 정류해서 상기 증폭수단에 출력하는 제2브리지 정류회로로 이루어진 것을 특징으로 하는 전기세탁기용 누전차단장치.4. The power supply means according to claim 1, wherein the power supply means rectifies the input AC voltage to a level of DC12V and outputs the result to the microcomputer, and rectifies the voltage to amplification means of DC12V to DC20V to DC20V. An electric leakage breaking device for an electric washing machine, comprising a second bridge rectifier circuit. 제1항에 있어서, 상기 누전감지수단(20)은 누전에 의하여 세탁기에 입력되는 전원선 주위에 발생하는 가장의 불균형으로 인해서 교변하여 발생하는 전류를 추출해내는 영전류변환기(ZCT; Zero Current Transformer)와, 상기 영전류변환기(ACT)의 DC출력전압에 포함되어 있는 맥류성분을 필터링해서 평활화시키도록 상기 저항(R1)에 별렬로 연결된 평활콘덴서(C3)와, 누전발생시에 상기 영전류변환기(ZCT)의 출력전압을 충방전시키도록 상기 영전류변환기(ZCT)에 별렬로 접속된 충방전회로(20a)와 상기충장전회로(20a)에 병렬로 접속되어 상기충방전회로(20a)의 교류출력신호를 전파정류하는 정류회로(20b)와, 상기 정류회로(20b)의 출력전류를 제한하는 출력저항(R2)으로 이루어진 것을 특징으로 하는 전기세탁기용 누전차단장치.The zero-current transformer (ZCT) according to claim 1, wherein the ground fault detecting means (20) extracts a current generated by alternating due to the most imbalance occurring around the power line input to the washing machine by the ground fault. And a smoothing capacitor (C3) connected in series with the resistor (R1) to filter and smooth the pulsation component contained in the DC output voltage of the zero current converter (ACT), and the zero current converter (ZCT) when a short circuit occurs. AC output of the charge / discharge circuit 20a connected in parallel to the charge / discharge circuit 20a and the charge / discharge circuit 20a which are connected to the zero current converter ZCT so as to charge and discharge the output voltage of A rectifier circuit (20b) for full-wave rectification of the signal, and an output resistance (R2) for limiting the output current of the rectifier circuit (20b) earth leakage circuit breaker for electric washing machine, characterized in that consisting of. 제1항에 있어서, 상기 증폭수단(30)은 상기 전원수단(10)의 제2브리지정류회로(13)로부터 DC12V의 출력전압을 받아서 정전압을 출력하는 정전압레귤레이터(30a)와, 상기 정전압레귤레이터(30a)로부터 출력되는 정전압을 받음과 동시에 상기 누전감지수단(20)에서 감지한 출력전류를 받아서 증폭하는 차동증폭기(30b)와, 상기정전압레귤레이터(30a)로부터 출력되는 정전압을 받음과 동시에 상기 차등증폭기(30b)에서 증폭되어서 출력되는 증폭전류를 일정한 시간동안 기억시켰다가 출력하는 래치(30c)로 이루어진 것을 특징으로 하는 전기세탁기용 누전차단장치.The constant voltage regulator (30a) of claim 1, wherein the amplifying means (30) receives an output voltage of DC12V from the second bridge rectifying circuit (13) of the power supply means (10) and outputs a constant voltage. The differential amplifier 30b receives the constant voltage output from the terminal 30a and receives and amplifies the output current sensed by the ground fault detecting means 20, and the differential amplifier receives the constant voltage output from the constant voltage regulator 30a. And a latch (30c) for storing and outputting the amplified current amplified and outputted at (30b) for a predetermined time. 제1항에 있어서, 상기 구동수단(40)은 마이크로컴퓨터(60)의 제어신호를 받아서 반전하는 인버터(41)와, 상기 인버터(41)의 출력신호를 저항(R5)을 통해 받아서 세탁기의 가동을 제어하는 구동소자(42)와, 누전발생시에 세탁기의 입력전원을 차단하는 스위칭회로(43)로 이루어진 것을 특징으로 하는 전기세탁기용 누전차단장치.According to claim 1, The drive means 40 is an inverter 41 for receiving the control signal of the microcomputer 60 and inverts, and the output signal of the inverter 41 through the resistor (R5) to operate the washing machine A driving device 42 for controlling the electric leakage cutoff device for an electric washing machine, characterized in that consisting of a switching circuit (43) to cut off the input power of the washing machine when a short circuit occurs. 제1항에 있어서, 상기 전원차단수단(50)은 상기 구동수단(40)의 제어에 의해서 누전이 발생되면, 세탁기에 입력되는 전원을 온·오프(ON·OFF)시키는 코일형 릴레이(L1)로 이루어진 것을 특징으로 하는 전기세탁기용 누전차단장치.The coil type relay (L1) according to claim 1, wherein the power interrupting means (50) turns on / off the power input to the washing machine when a short circuit occurs under the control of the driving means (40). An electric leakage breaking device for an electric washing machine, characterized in that consisting of. 제5항에 있어서, 상기 사위칭회로(43)는 누전발생시에 상기 증폭수단(30)의 래치(30e)에서 출력되는 증폭된 누전감지전류에 포함되어 있는 맥류성분을 필터링하는 콘덴서(C6)와, 상기 래치(30c)에서 출력되는 증폭된 누전감지 전류를 바이어스저항(R3, R4)을 통해 받아서 온되는 트랜지스터(TR1)로 이루어진 것을 특징으로 하는 전기세탁기용 누전차단장치.The capacitor switching circuit (43) according to claim 5, wherein the switching circuit (43) filters a pulsation component included in the amplified ground fault detection current output from the latch (30e) of the amplification means (30) when a ground fault occurs; And a transistor (TR1) configured to receive the amplified earth leakage detection current output from the latch (30c) through a bias resistor (R3, R4). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920019955A 1992-10-28 1992-10-28 Leakage current breaking apparatus of a washing machine KR0161016B1 (en)

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Application Number Priority Date Filing Date Title
KR1019920019955A KR0161016B1 (en) 1992-10-28 1992-10-28 Leakage current breaking apparatus of a washing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920019955A KR0161016B1 (en) 1992-10-28 1992-10-28 Leakage current breaking apparatus of a washing machine

Publications (2)

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KR940009421A true KR940009421A (en) 1994-05-20
KR0161016B1 KR0161016B1 (en) 1998-12-15

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KR1019920019955A KR0161016B1 (en) 1992-10-28 1992-10-28 Leakage current breaking apparatus of a washing machine

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