KR950005234B1 - Filter get stopping up perception method of clothing dryer - Google Patents
Filter get stopping up perception method of clothing dryer Download PDFInfo
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- KR950005234B1 KR950005234B1 KR1019920016230A KR920016230A KR950005234B1 KR 950005234 B1 KR950005234 B1 KR 950005234B1 KR 1019920016230 A KR1019920016230 A KR 1019920016230A KR 920016230 A KR920016230 A KR 920016230A KR 950005234 B1 KR950005234 B1 KR 950005234B1
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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
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
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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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/22—Lint collecting arrangements
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or pumps
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/44—Current or voltage
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/52—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to electric heating means, e.g. temperature or voltage
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/34—Filtering, e.g. control of lint removal devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
제1도는 종래 필터의 평면도.1 is a plan view of a conventional filter.
제2도는 본 발명 의류건조기의 단면도.2 is a cross-sectional view of the clothes dryer of the present invention.
제3도는 본 발명의 의류건조기의 필터막힘 감지장치의 블럭도.3 is a block diagram of a filter clogging detection apparatus of the clothes dryer of the present invention.
제4도는 제3도에 있어서 필터막힘 감지에 따른 신호흐름도.4 is a signal flow diagram according to filter clogging detection in FIG.
제5도는 제3도에 있어서 히타풍량과 파워의 관계를 보인 파형도.FIG. 5 is a waveform diagram showing the relationship between the amount of heater air and power in FIG.
제6도는 제3도에 있어서 히타풍량과 온도의 관계를 보인 파형도.FIG. 6 is a waveform diagram showing the relationship between the amount of heater air and temperature in FIG.
제7도는 제3도에 있어서 히타저항치와 온도의 관계를 보인 파형도.7 is a waveform diagram showing the relationship between the heater resistance value and temperature in FIG.
제8도는 제3도에 있어서 히타저항치와 전류의 관계를 보인 파형도.FIG. 8 is a waveform diagram showing the relationship between the heater resistance value and the current in FIG.
제9도는 제3도에 있어서 포집의류량과 전류의 관계를 보인 파형도.FIG. 9 is a waveform diagram showing the relationship between the collection clothing amount and the current in FIG.
제10도는 제3도에 있어서 전압변동시 히타전류의 변화를 보인 파형도.FIG. 10 is a waveform diagram showing changes in heater current during voltage fluctuations in FIG.
제11도는 제3도에 있어서 히타온시 전류센서값의 변화를 보인 파형도.FIG. 11 is a waveform diagram showing a change in the current sensor value at the time of hitting in FIG.
제12도는 제3도에 있어서 히타의 돌입전류변화를 보인 파형도.FIG. 12 is a waveform diagram showing a change in inrush current of the heater in FIG.
제13도는 제3도에 있어서 필터상태에 따른 건조시간의 변화를 보인 파형도.FIG. 13 is a waveform diagram showing changes in drying time according to filter conditions in FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 전원부 2 : 드럼내온도검출부1: power supply unit 2: drum temperature detection unit
3 : 제습후온도검출부 4 : 전류감지트랜스3: temperature detection unit after dehumidification 4: current sensing transformer
5 : 전압변동감지부 6 : 마이컴5: voltage fluctuation detection part 6: microcomputer
6-1 : A/D변환부 7 : 부하제어부6-1: A / D conversion part 7: Load control part
8 : 표시부 9 : 모터8: display unit 9: motor
10 : 히터 11 : 팬10: heater 11: fan
12 : 드럼 13 : 필터12 drum 13 filter
14 : 공기순환로 16 : 필터카버14: air circulation path 16: filter cover
S1, S2: 온도감지센서 T1: 드랜스S 1 , S 2 : Temperature sensor T 1 : Dance
BD1: 브릿지다이오드 R1, R2: 저항BD 1 : bridge diode R 1 , R 2 : resistance
본 발명은 의류건조기의 필터막힘 감지에 관한 것으로, 특히 의류건조 수행시 필터의 막힘정도를 감지하고 필터의 막힘으로 인해 건조효율저하시 사용자에게 경보하여 에러율을 보상하는 의류건조기의 필터막힘 감지방법에 관한 것이다.The present invention relates to a filter clogging detection of a clothes dryer, and more particularly, to a filter clogging detection method of a clothes dryer that detects a degree of clogging of a filter when performing clothes drying and compensates for an error rate by alerting a user to a decrease in drying efficiency due to clogging of a filter. It is about.
제1도는 종래 필터의 평면도로서 이에 도시한 바와 같이, 부직포 및 나일론으로 만들어져 미세의류입자를 포집하는 필터(13)와, 이 필터(13)를 지지하고 필터막힘 표시가 나타나는 필터커버(15)로 구성된 것으로, 이와 같은 종래 의류건조기의 동작 과정을 설명하면 다음과 같다.1 is a plan view of a conventional filter, as shown therein, a filter 13 made of nonwoven fabric and nylon and collecting fine clothing particles, and a filter cover 15 which supports the filter 13 and shows a filter clogging indication. As described above, the operation of the conventional clothes dryer is as follows.
먼저, 의류건조기를 건조모드로 선택되면 건조동작이 서서히 진행되고 이에따라 건조동작이 90% 이상 수행되면 세탁시에 빠진 의류의 실오라기들의 뜨거운 공기와 함께 의류건조기 내부에 순환되면서 필터(13)에 포집된다.First, when the clothes dryer is selected as the drying mode, the drying operation is gradually progressed, and when the drying operation is performed by 90% or more, the clothes dryer is collected in the filter 13 while being circulated inside the clothes dryer with the hot air of the silages of the clothes which are lost during washing. .
이때, 의류의 대부분이 흰색계통이 많고 필터(13)와 필터커버(15)는 검전색이므로 상기 필터(13)에 미세의류의 포짐이 증가할 수록 "필터막힘표시"가 뚜렷해진다.At this time, since most of the clothing has a white system and the filter 13 and the filter cover 15 are black in color, as the pore of fine clothing increases on the filter 13, the "filter clogging display" becomes more apparent.
따라서, 사용자는 필터(13)의 포집량이 증가함에 따라 필터커버(15)의 "필터막힘표시"의 선명도를 보고 필터(13)의 막힘여부를 판단하여 필터(13)의 청소를 수행한다.Accordingly, the user cleans the filter 13 by determining whether the filter 13 is clogged based on the sharpness of the "filter clogging indication" of the filter cover 15 as the collection amount of the filter 13 increases.
그러나, 이와 같은 종래 의류건조기는 매회 의류건조기 사용시마다 필터청소를 권고하고 있으나 청소의 불편함과 번거로움으로 인해 거의 필터 청소에 무관심하고 건조를 수행함에 따라 필터의 막힘정도가 변화되나 육안으로 필터의 막힘정도를 정확히 알 수 없어 필터청수가 지연되므로 필터의 포집량 증가에 따라 건조 시간이 지연되어 전력소비가 증가하며 필터의 막힘정도가 심할 수록 미세의류입자가 필터에 포집되지 않고 떠돌아 다니다 의류 및 건조기 내부에 달라붙어 불결하게 하는 문제점이 있었다.However, such a conventional clothes dryer recommends cleaning the filter every time the clothes dryer is used, but due to the inconvenience and hassle of cleaning, it is almost indifferent to the filter cleaning and the degree of clogging of the filter changes as the drying is performed. As the clean water is delayed because the degree of clogging is not known accurately, the drying time is delayed by increasing the collection amount of the filter, and the power consumption increases. As the degree of blockage of the filter increases, the fine clothing particles do not collect in the filter. There was a problem of clinging to the inside and making it dirty.
본 발명은 이러한 문제점을 감안하여 센서를 이용하여 필터의 막힘정도와 상태변동을 감지하고 마이컴에서 비교 판단하여 상태변동에 따른 에러율을 보상하고 필터막힘 정도가 기준점 이상일때 사용자에게 경보하는 의류건조기의 필터막힘 감지방법을 창안한 것으로, 이를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.In view of the above problems, the present invention uses a sensor to detect the degree of clogging of a filter and a change in state, and compares and judges the result in a microcomputer to compensate for an error rate according to the state change, and a filter of a clothes dryer that alerts a user when the degree of blockage is greater than a reference point. Invented a method for detecting clogging, which will be described in detail with reference to the accompanying drawings.
제2도는 본 발명 의류건조기의 단면도로서 이에 도시한 바와 같이, 아웃케이스(20)의 상면 내측에 모터(9)를 부착하고, 뒷면에 통기구를 설치하여 그 내측에 상기 모터(9)에 의해 구동되는 팬(11)을 부착하며, 상기 팬(11)의 풍량이 드럼(12)의 내부로 유입되게 하는 공기순환로(14)를 설치하고 이 공기순환로(14)와 드럼(12)이 맞닿은 부분에 히터(10)를 설치하며, 상기 팬(11)의 드럼 내측에 필터(13)를 부착하고, 상기 팬(11)의 중심축이 고정된 상부와 공기순환로(14)의 내부에 온도감지센서(S1),(S2)를 각기 부착하여 구성한다.2 is a cross-sectional view of the clothes dryer of the present invention, as shown in this figure, the motor 9 is attached to the inside of the upper surface of the outer case 20, and the vent is provided on the rear surface, and is driven by the motor 9 therein. A fan 11 is installed, and an air circulation path 14 is installed to allow the air volume of the fan 11 to flow into the drum 12, and the air circulation path 14 and the drum 12 are in contact with each other. The heater 10 is installed, and the filter 13 is attached to the inside of the drum of the fan 11, and the temperature sensing sensor is installed inside the air circulation path 14 and the upper part where the central axis of the fan 11 is fixed. S 1 ) and (S 2 ) are attached to each other.
제3도는 본 발명 의류건조기의 필터막힘 감지장치의 블럭도로서 이에 도시한 바와 같이, 각부에 전원을 공급하는 전원부(1)와, 온도감지센서(S1)로 드럼(12)내 온도를 검출하는 드럼내온도검출부(2)와, 온도감지센서(S2)로 제습후 온도를 검출하는 제습후 온도검출부(3)와, 모터(9), 히타(10)등의 부하의 전류치를 점검하여 이상유무를 판단하고 비교하기 위한 전류감지트랜스(4)와, 전원전압의 변동에 따라 변동값을 감지하기 위한 전압변동감지부(5)와, 상기 각부(1-5)의 각 출력신호를 A/D변환부(6-1)로 인가받아 연산을 통해 제어신호를 생성하는 마이컴(6)과, 이 마이컴(6)의 제어신호를 받아 상기 모터(9)와 히터(10)를 제어하는 부하제어부(7)와, 상기 마이컴(6)의 제어신호를 받아 필터(13)의 막힘감지를 경보하는 표시부(8)로 구성한 것으로, 상기 전압변동감지부(5)는 교류(AC)를 트랜스(T1)에 감압하고 이 감압한 전압을 브릿지다이오드(BD1)에서 정류하여 이 정류된 전압을 저항(R1),(R2)으로 분압하여 마이컴(6)에 출력하게 구성한다.3 is a block diagram of the filter clogging detection device of the clothes dryer of the present invention, as shown here, the power supply unit 1 for supplying power to each part and the temperature sensor S 1 to detect the temperature in the drum 12 The drum temperature detection unit 2, the dehumidification temperature detection unit 3 which detects the temperature after dehumidification by the temperature sensor S 2 , and the current values of loads such as the motor 9, the heater 10, and the like. A current sensing transformer 4 for determining and comparing an abnormality, a voltage fluctuation detecting unit 5 for detecting a fluctuation value in accordance with a change in power supply voltage, and each output signal of each unit 1-5 A microcomputer 6 that is applied to the / D converter 6-1 to generate a control signal through calculation, and a load that receives the control signal of the microcomputer 6 to control the motor 9 and the heater 10. The control part 7 and the display part 8 which receives the control signal of the said microcomputer 6, and alarms the clogging of the filter 13 are comprised, The said voltage fluctuation detection 5 is a microcomputer by dividing the rectified voltage to a reduced pressure to an alternating current (AC) to the transformer (T 1) and rectifying the a reduced voltage by the bridge diode (BD 1), a resistance (R 1), (R 2 ) It outputs to (6).
이와 같이 구성한 본 발명 의류건조기의 필터막힘 감지방법의 작용 및 효과를 제4도 필터막힘 감지에 따른 신호흐름도, 제5도 내지 제13도 상태변화에 따른 파형도를 참조하여 상세히 설명하면 다음과 같다.The operation and effects of the filter clogging detection method of the clothes dryer according to the present invention configured as described above will be described in detail with reference to the signal flow chart according to the fourth degree filter clogging detection and the waveform diagram according to the state changes of FIGS. .
먼저, 세탁이 완료된 의류를 의류건조기에 넣고 건조모드를 선택하면 마이컴(6)은 부하제어부(7)를 통해 모터(9)와 히터(10)를 구동시키고 상기 모터(9)에 의해 구동하는 팬(11)의 풍량이 공기순환로(14)를 통해 히터(10)에서 온도가 상승하여 드럼(12)의 내부에 유입함에 따라 의류가 건조하며 이에따라 거의 건조가 완료되면 세탁시 빠진 미세의류입자들이 순환공기를 따라 필터(13)에 포집된다.First, when washing clothes are put in the clothes dryer and the drying mode is selected, the microcomputer 6 drives the motor 9 and the heater 10 through the load control unit 7 and is a fan driven by the motor 9. As the air volume of the 11 increases in the temperature of the heater 10 through the air circulation passage 14 and flows into the drum 12, the clothes are dried. Accordingly, when the drying is almost complete, the fine clothing particles lost during washing are circulated. The air is collected by the filter 13 along with the air.
이때, 피티씨(PTC)히터를 열원으로 사용하는 경우 제5도에 도시한 바와 같이 팬(11)의 풍량이 증가함에 따라 급격히 전력이 증가하는데 필터(13)의 포집량이 점차 증가하여 필터(13)가 막힘에 따라 상기 필터(13)가 정상일때와 같은 거의 일정한 팬(11)의 풍량이 건조용 순환공기를 차단하므로 제6도에 도시한 바와 같이 드럼(12) 내부에 유입되는 팬(11)의 풍량이 감소하여 상기 히터(10)의 주변온도를 상승시킨다.At this time, when the PTC heater is used as the heat source, as the air volume of the fan 11 increases as shown in FIG. 5, the power increases rapidly, and the collection amount of the filter 13 gradually increases, and the filter 13 ), The amount of air of the fan 11 that is substantially constant, such as when the filter 13 is normal, blocks the circulation air for drying, so that the fan 11 that flows into the drum 12 as shown in FIG. 6 is blocked. ), The air volume decreases to increase the ambient temperature of the heater 10.
따라서, 드럼내온도검출부(1)와 제습후 온도검출부(3)는 온도감지센서(S1),(S2)를 통해 감지한 드럼(12)내의 온도값을 A/D변환부(6-1)에 출력하고 이 A/D변환부(6-1의 변환값을 인가받은 마이컴(6)은 기준 온도값과 비교하고, 기준온도값이상이 일정시간 지속되면 필터(13)의 막힘으로 판단한다.Accordingly, the drum temperature detection unit 1 and the dehumidification temperature detection unit 3 convert the temperature value in the drum 12 detected by the temperature sensors S 1 and S 2 to the A / D conversion unit 6-. The microcomputer 6 which outputs to 1) and receives the converted value of the A / D conversion unit 6-1 is compared with the reference temperature value, and it is determined that the filter 13 is clogged when the reference temperature value is maintained for a certain time. do.
한편, 히터(10)의 온도가 상승하면 제7도에 도시한 바와 같이 상기 히터(10)의 저항치가 증가하고 상대적으로 제5도와 제8도에 도시한 바와 같이 전원전압이 일정한 상태에서 팬(11)의 풍량이 적어지므로 전력(Power)이 감소하고 히터(10)이 전류도 감소한다.On the other hand, when the temperature of the heater 10 rises, as shown in FIG. 7, the resistance of the heater 10 increases, and as shown in FIGS. 5 and 8, the fan ( Since the air volume of 11) is reduced, power is reduced and the heater 10 is also reduced in current.
즉, 제9도에 도시한 바와 같이 필터(13)의 포집량이 증가할수록 히터(10)의 전류치는 감소하고 이 감소값을 센서를 통해 마이컴(6)이 점검하고 판단하여 필터(13)의 막힘전도를 감지한다.That is, as shown in FIG. 9, as the collection amount of the filter 13 increases, the current value of the heater 10 decreases, and this reduction value is checked and determined by the microcomputer 6 through the sensor, thereby clogging the filter 13. Detect conduction
따라서, 마이컴(6)은 부하제어부(7)를 제어하여 모터(9)와 히터(10)를 온시킨 후 건조시 에러율을 감소시키기 위해 일정시간(분)마다 상기 히터(10)의 온시간을 내부타이머로 계측하고, 이 계측시간(t1)이 일정시간(1분)을 넘으면 상기 계측값(t1)을 0으로 리세트한 후 플레그(xflag)가 1로 세트되었는지 점검하며, 계측시간(t1)이 일정시간(1분)을 넘지않으면 필터(13)의 막힘 감지 수행을 종료한다.Accordingly, the microcomputer 6 controls the load control unit 7 to turn on the motor 9 and the heater 10, and then to turn on the heater 10 at a predetermined time in order to reduce the error rate during drying. When the measurement time (t 1 ) exceeds the predetermined time (1 minute), the measurement is performed with an internal timer, and the measurement value (t 1 ) is reset to 0, and then a check is made that the flag (xflag) is set to 1. If (t 1 ) does not exceed a predetermined time (1 minute), the clogging detection of the filter 13 is finished.
따라서, 플래그(xflag)가 0이면 마이컴(6)은 부하제어부(7)를 통해 히터(10)아 오프에서 온으로 되었는지 점검하고 상기 히터(10)가 온이 되었으면 내부타이머로 상기 히터(10)의 온시간을 계측하여 이 계측값(t2)이 일정시간(20초) 이상이면 플래그(xflag)를 1로 세트한다.Therefore, if the flag (xflag) is 0, the microcomputer 6 checks whether the heater 10 is turned on and off by the load control unit 7, and if the heater 10 is on, the heater 10 is turned on by the internal timer. If the measured value t 2 is longer than a predetermined time (20 seconds), the flag xflag is set to one.
즉, 히터(10)는 제12도에 도시한 바와 같이 자체 특성인 돌입전류에 의해 전류값이 증가된 후 안정화되는데 일정시간이 필요하고 전류감지트랜스(4)에서의 변호도 제11도에 도시한 바와 같이 히터(10)가 오프에서 온될때 안정화하는데 일정시간(20초)이 필요하여 상기 히터(10)의 안정화는 일정시간(20초)이 소요된다.That is, the heater 10 needs a certain time to stabilize after the current value is increased by its inrush current as shown in FIG. 12, and the deflection in the current sensing transformer 4 is also shown in FIG. As described above, a certain time (20 seconds) is required to stabilize when the heater 10 is turned on and off, so that the stabilization of the heater 10 takes a certain time (20 seconds).
또한, 히터(10)가 오프에서 온되지 않았을때 히터(10)가 오프인지 점검하여 오프가 아니면 플래그(xflag)를 1로 세트하고 상기 히터(10)가 오프이면 플래그(xflag)를 0으로 리세트한 후 필터(13)의 막힘감지 수행을 종료한다.In addition, when the heater 10 is not turned off, it is checked whether the heater 10 is off. If the heater 10 is not off, the flag xflag is set to 1, and if the heater 10 is off, the flag xflag is reset to 0. After setting, the clogging detection of the filter 13 is finished.
이때, 히터(10)가 이미 온이 되어 있거나 상기 히터(10)가 오프에서 온이되어 일정시간(20초)를 경화하여 플래그(xflag)가 1로 세트되면 마이컴(6)은 필터(13)의 막힘정도를 감지하기 위해 전압변동감지부(5)의 출력을 A/D변환부(6-1)로 감지하여 현재의 공급전압을 판단하고 제10도에 도시한 바와 같이 상기 필터(13)의 정상시와 막힘시 사이의 기준레벨값(VR)을 설정한다.At this time, when the heater 10 is already turned on or the heater 10 is turned off to harden for a predetermined time (20 seconds), and the flag (xflag) is set to 1, the microcomputer 6 may filter the filter 13. In order to detect the degree of blockage, the output of the voltage fluctuation detecting unit 5 is sensed by the A / D converter 6-1 to determine the current supply voltage and the filter 13 as shown in FIG. Set the reference level value (V R ) between normal and plugged.
따라서, 마이컴(6)은 기준레벨값(VR)과 전류감지트랜스(4)의 전류값(CT)을 비교하여 상기 기준레벨값(VR) 보다 작으면 필터(13)의 막힘으로 1회 판별하고 상기 전류값(CT)이 기준레벨값보다 크면 필터(13)의 막힘이 아닌 것으로 판별한다.Therefore, the microcomputer (6) is the reference level value (V R) and, if compared to the current value (CT) of the current sensing transformer (4) is less than the reference level (V R) to the clogging of the filter 13 is once If the current value CT is greater than the reference level value, it is determined that the filter 13 is not blocked.
이때, 마이컴(6)은 전류감지트랜스(4)의 전류값(CT)과 설정된 기준레벨값(VR)을 비교하여 전류값(CT)이 기준레벨값(VR) 보다 5회이상 작게 감지되면 필터(13)의 막힘으로 판단하고 표시부(8)에 필터막힘표시를 하여 사용자에게 알린다.At this time, the microcomputer 6 compares the current value CT of the current sensing transformer 4 with the set reference level value V R , and when the current value CT is detected five times or less than the reference level value V R. It is judged that the filter 13 is clogged, and a filter clogging mark is displayed on the display unit 8 to inform the user.
따라서, 필터(13)의 포량이 증가하여 막힘이 발생하면 제13도에 도시한 바와 같이 상기 필터(13)가 정상일때보다 건조시간이 지연된다.Therefore, if clogging occurs due to an increase in the amount of the filter 13, the drying time is delayed than when the filter 13 is normal as shown in FIG.
한편, 전류감지트랜스(4)로 히터(10)의 전류를 점검하면 전압변동에 따라 필터(13)가 정상인 상태일때도 상기 히터(10)의 잔류가 변화한다.On the other hand, if the current of the heater 10 is checked by the current sensing transformer 4, the residual of the heater 10 changes even when the filter 13 is in a normal state according to the voltage change.
즉, 제8도에 도시한 바와 같이 (a)점에 기준레벨값(VR)이 선택되었을 경우 필터(13) 상태는 정상일때도 저전압이 인가되면 전류감지트랜스(4)의 전류값이 감소하여 필터막힘으로 판별하고 기준전압(220V) 보다 훨씬 큰 고전압에서는 상기 전류감지트랜스(4)의 전류값이 상승하여 필터막힘상태에서도 필터정상처럼 동작한다.That is, as shown in FIG. 8, when the reference level value V R is selected at the point (a), if the low voltage is applied even when the filter 13 state is normal, the current value of the current sensing transformer 4 decreases. At the high voltage, which is determined by the filter clogging and is much larger than the reference voltage 220V, the current value of the current sensing transformer 4 rises and operates like the filter normal even in the filter clogging state.
이와 같이 히터(10)의 전력은 일정한데 공급전압이 커져 상대적으로 전류가 감소하여 필터막힘 감지수행시에 에러발생을 방지하기 위해 전압변동감지부(5)의 전압변동율을 마이컴(6)에서 점검한다.In this way, the power of the heater 10 is constant, but the supply voltage increases, and the current decreases relatively, so that the voltage fluctuation rate of the voltage fluctuation detecting unit 5 is checked by the microcomputer 6 to prevent an error from occurring during the filter clogging detection. do.
따라서, 전압변동율의 차이로 필터(13)의 포집량을 점검할 수 있으므로 마이컴(6)은 전압변동감지부(5)의 전압변동율이 일정량이상이면 필터(13)의 막힘으로 판단한다.Therefore, since the trapping amount of the filter 13 can be checked due to the difference in the voltage variation rate, the microcomputer 6 determines that the filter 13 is clogged if the voltage variation rate of the voltage variation detecting unit 5 is higher than a certain amount.
이상에서 상세히 설명한 바와 같이 본 발명 의류건조기의 필터막힘 감지방법은 마이컴으로 필터의 막힘정도를 자동으로 감지하여 필터의 청소시기를 경보함으로써 의류건조기 사용자의 불편함과 번거로움을 해소시키고 필터막힘으로 인한 건조효율 저하를 제거하며 효율성 있는 사용으로 의류의 청결을 유지하는 효과가 있다.As described in detail above, the filter clogging detection method of the present invention clothes dryer automatically detects the blockage of the filter with a microcomputer to alert the cleaning time of the filter, thereby eliminating inconvenience and inconvenience to the user of the clothes dryer and causing the filter clogging. Eliminates the decrease in drying efficiency and maintains the cleanliness of clothes with efficient use.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019920016230A KR950005234B1 (en) | 1992-09-05 | 1992-09-05 | Filter get stopping up perception method of clothing dryer |
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|---|---|---|---|
| KR1019920016230A KR950005234B1 (en) | 1992-09-05 | 1992-09-05 | Filter get stopping up perception method of clothing dryer |
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| KR950005234B1 true KR950005234B1 (en) | 1995-05-22 |
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| KR102047516B1 (en) | 2018-03-08 | 2019-11-21 | 남종규 | Apparatus for preventing bird strike |
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