TR201610981A2 - Electrical household appliance having a moisture sensing circuit - Google Patents

Electrical household appliance having a moisture sensing circuit Download PDF

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Publication number
TR201610981A2
TR201610981A2 TR2016/10981A TR201610981A TR201610981A2 TR 201610981 A2 TR201610981 A2 TR 201610981A2 TR 2016/10981 A TR2016/10981 A TR 2016/10981A TR 201610981 A TR201610981 A TR 201610981A TR 201610981 A2 TR201610981 A2 TR 201610981A2
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TR
Turkey
Prior art keywords
household appliance
electrical
circuit
laundry
moisture sensing
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TR2016/10981A
Other languages
Turkish (tr)
Inventor
Kapsiz Olcay
Acar Ali̇
Ozan Yildirim İhsan
Fi̇danoğlu Ersi̇n
Kara Erdem
Original Assignee
Arcelik As
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Application filed by Arcelik As filed Critical Arcelik As
Priority to TR2016/10981A priority Critical patent/TR201610981A2/en
Priority to PCT/EP2017/068923 priority patent/WO2018024580A1/en
Priority to EP17751312.4A priority patent/EP3494255A1/en
Publication of TR201610981A2 publication Critical patent/TR201610981A2/en

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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/18Condition of the laundry, e.g. nature or weight
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/08Humidity
    • D06F2103/10Humidity expressed as capacitance or resistance
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/62Stopping or disabling machine operation
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00Washing 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 having further drying means, e.g. using hot air 
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/32Control of operations performed in domestic laundry dryers 
    • D06F58/34Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Bu buluş, bir çamaşır makinesinde, özellikle bir çamaşır kurutucuda kullanılan birnem algılama devresi (1) ile ilgilidir. Bu buluş özellikle, çamaşırların yerleştirildiği bir tambur, sözü edilen tamburun içine yerleştirilen iletken plakalar ve çamaşırların direncinin ölçülmesini sağlayan bir nem algılama devresi (1)i çeren bir elektrikli ev cihazı ile ilgilidir.The present invention relates to a moisture sensing circuit (1) used in a washing machine, particularly a clothes dryer. In particular, the present invention relates to an electrical household appliance comprising a drum in which the laundry is placed, conductive plates placed inside said drum, and a moisture sensing circuit (1) that enables the resistance of the laundry to be measured.

Description

TARIFNAME BIR NEM ALGILAMA DEVRESINE SAHIP BIR ELEKTRIKLI EV CIHAZI Bu bulus, bir nem algilama devresi içeren, bir çamasir yikama ve/veya kurutma makinesi, özellikle, bir çamasir kurutucu gibi bir elektrikli ev cihazi ile ilgilidir. Çamasir kurutucularda, ev cihazinin tamburunun içinde nemden arindirilmis bir duruma gelindiginin belirlenmesi amaciyla kurutma çevrimi sirasinda çamasirlarin nem düzeyinin sensörlerle gözlemlenmesi teknikte bilinen bir uygulamadir. Hedeflenen kuruluk düzeyi genellikle, çamasirlarin türüne bagli olarak kullanici tarafindan belirlenmektedir. Nem sensörleri hedeflenen degere ulasildigini algiladiginda kurutma çevrimi sonlandirilmaktadir. DESCRIPTION AN ELECTRIC HOUSE WITH A MOISTURE DETECTION CIRCUIT DEVICE The present invention is a washing and/or drying machine comprising a moisture detection circuit. The machine relates, in particular, to an electrical household appliance such as a clothes dryer. In tumble dryers, a dehumidified vacuum cleaner is used in the drum of the household appliance. during the drying cycle to determine when the Observing the humidity level of the laundry with sensors is a known technique in the art. is the application. The targeted dryness level usually depends on the type of laundry. is determined by the user. Humidity sensors to target value The drying cycle is terminated when it senses that it has been reached.

Nem sensörleri, kurutucunun tamburunun içine yerlestirilmektedir ve genellikle, elektrotlar vasitasiyla islak kumaslarin elektriksel empedansini ölçerek çalismaktadir. Teknikte, nem sensörleri, islak kumaslarin elektriksel empedansinin ölçülmesini saglayan bir dizi elektronik bilesenler kullanmakta ve bu bilgiyi bir mikro islemci vasitasiyla nem düzeyleri ile iliskilendirilmektedir. Humidity sensors are located inside the drum of the dryer and are usually by measuring the electrical impedance of wet fabrics through electrodes is working. In the art, moisture sensors are used to electrically test wet fabrics. It uses a series of electronic components that allow the impedance to be measured and This information is correlated with humidity levels via a microprocessor.

Nem algilama devreleri, islem amplifikatörleri, dirençler, kondansatörler gibi çesitli devre elemanlari ve bilesenleri içermekte, bunun sonucunda, tasarlanmasi zahmetli ve üretimi maliyetli olan asiri karmasik bir sistem ortaya çikmaktadir. such as moisture sensing circuits, operating amplifiers, resistors, capacitors contains various circuit elements and components, as a result, designing an excessively complex system emerges, which is laborious and costly to manufacture.

Ayrica, donanim veya yazilim arizasi durumunda, karmasikligindan dolayi bu sistemde sorunlarin giderilmesi de güçlesmektedir. Also, in case of hardware or software failure, this Troubleshooting the system is also getting harder.

Teknigin bilinen durumunda yer alan US7345491B2 sayili patent dokümaninda, bir çamasir kurutucuda kullanilan, islak çamasirlarin direncini ölçen, aralikli olarak yerlestirilmis bir çift elektrottan olusan bir nem algilama devresi açiklanmaktadir. Ayrica, çamasir kurutucunun islem hatti frekansindan kaynaklanan gürültünün baskilanmasi ve elektrotlar arasindaki voltaj düsüsünü gösteren bir voltaj sinyali elde edilmesi amaciyla bir aktif filtre kullanilmaktadir. Öte yandan, bu bulus ile, nem sensörlerinde karmasik ve maliyetli devreler kullanilmasini gerektirmeyen durumlar ele alinmaktadir. Bu bulus ile, çamasirlarin nem düzeyinin daha etkin ve düsük maliyetli bir sekilde algilanmasini saglayan, önceki teknige kiyasla daha az bilesenden olusan bir nem algilama devresi gerçeklestirilmektedir. Ayrica, filtre devresi kullanilmasi, nemin daha etkin bir sekilde algilanmasini saglamaktadir. Nem algilama devresinin sade tasarimi, ariza durumunda sorun gidermenin daha kolay gerçeklestirilebilmesini saglamaktadir. In the patent document numbered US7345491B2, which is in the state of the art, measuring the resistance of wet laundry, used in a clothes dryer, intermittent a moisture sensing circuit consisting of a pair of electrodes arranged as is explained. Also, from the processing line frequency of the washer dryer suppression of noise and voltage drop between electrodes An active filter is used to obtain a voltage signal showing On the other hand, with this invention, complex and costly circuits in humidity sensors situations that do not require its use are discussed. With this invention, moisture level of the laundry more effectively and cost-effectively. moisture, which is composed of fewer components compared to the previous technique, allowing the detection circuit is executed. In addition, using a filter circuit, moisture enables it to be perceived more effectively. The moisture detection circuit is simple. Its design allows easier troubleshooting in case of failure. it provides.

Bu bulus ile, Istem lide karakterize edilen özelliklerle tanimlanan bir nem algilama devresine sahip olan bir elektrikli ev cihazi gerçeklestirilmektedir. With the present invention, a moisture defined by properties that are characterized by claim an electrical household appliance having a detection circuit is realized.

Bu bulusun amaci, çamasirlarin nem düzeyinin daha etkin ve düsük maliyetli bir sekilde algilanmasini saglayan basit bir devre tasarimina ve bir filtreye sahip olan bir nem algilama devresi içeren bir elektrikli ev cihazinin gerçeklestirilmesidir. The aim of this invention is to reduce the moisture level of the laundry more effectively and cost-effectively. It has a simple circuit design and a filter that allows it to be is the realization of an electrical household appliance containing a moisture detection circuit.

Bulus konusu ev cihazi, tamburun içindeki çamasir nemini algilamak üzere iletken plakalar vasitasiyla elektriksel olarak baglanan bir elektrik filtresi devresi olan bir nem algilama devresi içermektedir. Bir darbe genislik modülasyonlu giris sinyalinin çalisma orani, Önceden belirlenmis bir çamasir direnci ölçüldügünde, nem algilama isleminin bir baslangiç evresinin sonunda degistirilmektedir. The household appliance of the invention is about to detect the humidity of the laundry inside the drum. an electrical filter circuit electrically connected via conductive plates It includes a moisture detection circuit. One pulse width modulated input operation rate of the signal, When a predetermined laundry resistance is measured, It is changed at the end of an initial phase of the moisture sensing process.

Elektrik filtresi devresinin frekans, direnç kapasitans ve endüktans gibi parametreleri, ikinci ölçüm asamasinin çözünürlügünün artirilmasi amaciyla sözü edilen birinci asamanin sonunda bir birinci degerden bir ikinci degere degistirilebilmektedir. Söz konusu nem algilama devresi, bir RC, RL veya RLC devresi, tercihen bir RC devresi olup, RC devresinin referans direnci sözü edilen iletken plakalara tercihen paralel olarak baglanmaktadir. such as frequency, resistance, capacitance and inductance of the electrical filter circuit. parameters are mentioned in order to increase the resolution of the second measurement stage. from a first value to a second value at the end of the first stage can be changed. The moisture sensing circuit in question is an RC, RL, or RLC. The circuit is preferably an RC circuit, where the reference resistance of the RC circuit is mentioned. It is preferably connected in parallel to the conductive plates.

Ekteki sekiller yalnizca, önceki teknige göre avantajlari yukarida ana hatlariyla anlatilan ve asagida ayrintili olarak açiklanacak olan bir nem algilama devresini örneklendirme amaciyla verilmistir. The appended figures only outline above the advantages over the prior art. a moisture detection circuit described and described in detail below. given for illustration purposes.

Sekiller, istemlerde tanimlanan koruma kapsamini sinirlandirmamaktadir ve bu bulusun açiklama kismindaki teknik açiklamaya basvurulmadan, söz konusu istemlerde tanimlanan kapsami yorumlama amaciyla tek baslarina kullanilmamalidir. The figures do not limit the scope of protection defined in the claims and this without reference to the technical explanation in the explanation part of the invention, alone for the purpose of interpreting the scope defined in the claims should not be used.

Sekil 1, bulusun bir uygulamasinda, nem düzeyi algilama isleminin bir genel akis diyagramini göstermektedir. Figure 1 is a general flow of moisture level sensing in one embodiment of the invention. shows the diagram.

Sekil 2, bulusun bir uygulamasinda, nem düzeyi algilama devresinin sadelestirilmis bir devre semasini göstermektedir. Figure 2 shows the humidity level sensing circuit in one embodiment of the invention. It shows a simplified circuit diagram.

Sekillerdeki parçalar tek tek numaralandirilmis olup, bu numaralarin karsiligi asagida verilmistir: 1) Nem algilama devresi 2) Çamasir Direnci 3) Referans Direnç 4) Algilama noktasi ) Kondansatör Bu bulusta, çamasirlarin nem düzeyi genellikle, bir kurutucu veya bir yikayici kurutucu gibi bir çamasir makinesinin tamburunun ön yüzüne yerlestirilen iki bagimsiz iletken plaka (Algilama noktalari, 4) ile belirlenmektedir. Teknikte bilindigi gibi, islak çamasirlar iletken plakalara temas ettiginde, bir nem algilama devresi (l) vasitasiyla empedansi ölçülmektedir. Çamasirlarin direncindeki degisim nem algilama devresinin (l) empedansinin degismesine neden olmakta, bunun sonucunda, nem algilama devresinin (1) her bir bileseninin sinyal genligi, frekansi veya fazi degismektedir. Nem düzeyi, bu degisimler ile nem miktari arasindaki iliski kullanilarak belirlenmektedir. The parts in the figures are numbered one by one and the corresponding numbers are given below: 1) Humidity detection circuit 2) Laundry Resistance 3) Reference Resistor 4) Detection point ) capacitor In this invention, the moisture level of the laundry is usually set by a dryer or a washer. two placed on the front of the drum of a washing machine, such as a dryer. determined by the independent conductive plate (Detection points, 4). in technique As it is known, when wet laundry comes into contact with the conductive plates, a moisture detection The impedance is measured by the circuit (1). In the resistance of the laundry the change causes the impedance of the moisture detection circuit (l) to change, as a result, the signal amplitude of each component of the moisture detection circuit (1), frequency or phase changes. Humidity level, the amount of moisture with these changes determined using the relationship between

Bulus konusu nem algilama devresi (l), degistirilebilir veya önceden belirlenmis genlige ve frekansa sahip bir referans sinyali, degisken degerlere sahip bilesenler ve RC, RL, RLC filtre devreleri içermekte, kurutucu tamburunun ön yüzüne yerlestirilen, sözü edilen nem algilama devresinin (1) herhangi bir bilesenine ve/veya tüm bilesenlerine paralel veya seri olarak baglanan iletken plakalara temas eden islak çamasirlarin direnci (çamasir direnci, 2), çamasirlarin nem miktarina bagli olarak sözü edilen her bir bilesenin sinyal genliginde, frekansinda veya fazinda degisim ortaya çikarmakta, böylece, çamasirlarin nem düzeyi belirlenebilmektedir. The inventive moisture detection circuit (l) is replaceable or predetermined. a reference signal with amplitude and frequency, components with variable values and RC, RL, RLC filter circuits, on the front of the dryer drum. to any component of said moisture sensing circuit (1), installed and/or conductive plates connected in parallel or in series to all its components. resistance of wet laundry in contact with (laundry resistance, 2), moisture resistance of laundry in the signal amplitude, frequency of each component mentioned, depending on the amount of or phase change, thus, the humidity level of the laundry can be determined.

Bu bulus ile, çamasirlarin nem düzeyinin daha etkin ve düsük maliyetli bir sekilde algilanmasini saglayan, avantajli bir sekilde daha az bilesenden olusan çok daha az karmasik bir nem algilama devresi (1) gerçeklestirilmektedir. Bu amaca, asagida açiklanacagi sekilde, nem algilama devresi (1) olan bir elektrik filtresi devresi kullanilarak ulasilmaktadir. With this invention, the moisture level of the laundry can be increased more effectively and cost-effectively. much more, advantageously consisting of fewer components a less complex moisture detection circuit (1) is carried out. For this purpose, An electrical filter with a moisture detection circuit (1), as described below accessed using the circuit.

Düsük frekansli uygulamalarda (, basit RC (Resistor-Capacitor, Direnç-Kondansatör) devreleri kullanilarak yükseltici elemanlar (transistörler, islem amplifikatörleri vb.) içermeyen bir elektrik filtresi devresi gerçeklestirilebilmektedir. Yüksek frekansli filtreler RLC (Resistor-lnductor- Capacitor, Direnç-Indüktör-Kondansatör) elemanlari kullanilarak üretilebilmektedir. In low frequency applications (, simple RC (Resistor-Capacitor, Using resistor-capacitor circuits, amplifier elements (transistors, an electrical filter circuit without operating amplifiers, etc. can be realized. High frequency filters RLC (Resistor-Inductor- Capacitor, Resistor-Inductor-Capacitor) elements can be produced.

Sekil ?de görüldügü gibi, RC devresi, bilinen bir periyoda ve çalisma oranina sahip bir darbe genisligi modülasyonlu sinyal olan bir giris sinyali aldiginda, darbe genisligi modülasyonu (PWM) çikisini darbe genisligi modülasyonu (PWM) dalga seklinin yüzdesine karsilik gelen bir voltaja dönüstürmektedir. As shown in the figure, the RC circuit has a known period and operating ratio. When it receives an input signal that is a pulse-width modulated signal with pulse width modulation (PWM) output pulse width modulation (PWM) into a voltage corresponding to the percentage of the waveform.

Teknikte uzman kisilerce bilindigi üzere, kondansatör (5) harici voltaj kaynagi ile yüklenmekte ve ardindan, kondansatör (5) referans direnç (3) üzerinden yükünü bosalttigindan uygulanan voltaj sifira düsmektedir. Bu bulusta, nem algilama isleminin bir baslangiç asamasinda bir birinci parametre grubu kullanilirken, al goritmanin takip eden asamasinda bir ikinci parametre grubu kullanilmaktadir. As is known to those skilled in the art, the capacitor (5) is connected to an external voltage source. is charged and then the capacitor (5) is charged through the reference resistor (3). Since it discharges, the applied voltage drops to zero. In this invention, moisture detection When using a first parameter group at an initial stage of the process, A second set of parameters is used in the next step of the algorithm.

Daha açik bir ifadeyle, bu bulusta, çamasir direncinin (2) ölçülmesi isleminin baslangiç asamasinda, bir birinci frekans degeri kullanilmakta ve frekans degeri, nem algilama hassasiyetinin artirilmasi amaciyla, belirli bir çamasir direnci (2) degerine ulasildiginda dinamik olarak degistirilmektedir. Ölçülen verilerin çözünürlügünün artmasi, çamasir direncinin belirgin sekilde yükseldigi ölçme isleminin takip eden asamasinda kuruluk düzeyinin algilanabilmesini sagladigindan, ölçme hassasiyetinin yükseltilmesi hayati önem tasimaktadir. Özetle, ilgili verilerin kaydedilmis bir örüntüsü temel alinarak kuruluk düzeyinin hassas bir sekilde belirlenmesi amaciyla, takip eden asamalarda farkli parametre gruplari kullanilarak, ölçülen verilerin çözünürlügünün artirilmasini saglayan ölçümler gerçeklestirilmektedir. More specifically, in this invention, the process of measuring the laundry resistance (2) is In the initial phase, a first frequency value is used and the frequency value is In order to increase the sensitivity of moisture detection, a certain laundry resistance (2) It is changed dynamically when the value is reached. Measured data The higher the resolution of the measurement, the higher the laundry resistance. In the following stage of the procedure, the level of dryness can be detected. Therefore, it is vital to increase the measurement accuracy. In summary, the dryness level can be determined based on a recorded pattern of relevant data. In order to precisely determine the different parameters in the following stages, using groups, which allows to increase the resolution of the measured data. measurements are made.

Sekil 25deki RC devresinde görüldügü gibi, referans direnç (R), RC, -t/RC, e^- t/RC, l-(e^-t/RC) ve V0 (Çikis voltaji) parametreleri ölçülen dirence göre degismektedir. Örnegin, bulusun bir RC devresi kullanilan bir uygulamasinda, algilama isleminin birinci asamasinda 400 Hz”lik bir frekans degeri ve %1051uk bir çalisma orani kullanilmaktadir. Öte yandan, ölçülen çamasir direncinin önceden belirlenmis bir degerinden baslanarak, 50 Hz*lik bir frekans degeri ve Frekans degerinin yerine referans direnç veya kapasitans degerleri de dinamik olarak degistirilebilmektedir. Nem algilama devresi olarak kullanilan elektrik filtresi bir RL veya RLC filtre devresi de olabilmektedir. As seen in the RC circuit in Figure 25, the reference resistor (R), RC, -t/RC, e^- The parameters t/RC, l-(e^-t/RC) and V0 (Output voltage) are relative to the measured resistance. is changing. For example, in an application of the invention using an RC circuit, In the first stage of the detection process, a frequency value of 400 Hz and a frequency of 1051% a working rate is used. On the other hand, the measured laundry resistance starting from a predetermined value, a frequency value of 50 Hz* and Instead of the frequency value, the reference resistance or capacitance values are also dynamic. can be changed. Electricity used as moisture detection circuit The filter may also be an RL or RLC filter circuit.

Asagidaki tabloda, parametre degerlerinin (birimleri F, Ohm ve Volt) ölçülen dirence (R-sensör) göre degisiminin örnek bir listesinin bir kismi gösterilmektedir. In the table below, the parameter values (units F, Ohm and Volt) are measured. Part of an example list of variation with respect to resistance (R-sensor) is shown.

Elektrik filtresi devresi iletken plakalara seri veya paralel olarak baglanabilmektedir. Özetle, bu bulus ile, çamasirlarin yerlestirildigi bir tambur, sözü edilen tamburun içine yerlestirilen iletken plakalar ve çamasirlarin direncinin ölçülmesini saglayan bir nem algilama devresi (l) içeren bir elektrikli ev cihazi gerçeklestirilmektedir. The electrical filter circuit is connected to the conductive plates in series or in parallel. can be attached. In summary, with this invention, a drum in which the laundry is placed is It provides the measurement of the resistance of the conductive plates and the laundry placed inside. an electrical household appliance comprising a moisture sensing circuit (1) is realized.

Bulusuii bir uygulamasinda, sözü edilen nem algilama devresi (l), sözü edilen iletken plakalar ile elektriksel olarak baglantili olan bir elektrik filtresi devresidir. In an embodiment of the invention, said moisture sensing circuit (1) is It is an electrical filter circuit that is electrically connected with conductive plates.

Bulusun bir baska uygulamasinda, sözü edilen elektrik filtresi devresine bir darbe genislik modülasyonlu giris sinyali uygulanmakta ve sözü edilen iletken plakalarin arasindaki çamasir direnci, nem algilama isleminin bir baslangiç asamasinda belirlenen bir birinci parametre degeri grubu ile, sözü edilen nem algilama isleminin takip eden bir asamasinda belirlenen bir ikinci parametre degeri grubu ile ölçülmekte, sözü edilen elektrik filtresi devresinin frekans, direnç, kapasitans veya endüktans parametrelerinden en az biri, önceden belirlenmis bir çamasir direncinin ölçüldügü sözü edilen birinci asamanin sonunda bir birinci degerden bir ikinci degere degistirilmektedir. In another embodiment of the invention, a pulse is applied to said electrical filter circuit. The width modulated input signal is applied and said conductor Laundry resistance between the plates is a prelude to the moisture sensing process. With a first set of parameter values determined in step a second parameter determined at a later stage of the detection process The frequency of said electrical filter circuit, measured by the value group, at least one of the resistance, capacitance or inductance parameters at the end of the first stage where a specified laundry resistance is measured is changed from a first value to a second value.

Bulusun bir baska uygulamasinda, söz konusu nem algilama devresi (l), algilama noktalari (4) yapisindaki söz konusu iletken plakalar ile elektriksel olarak baglantili olan bir RC, RL veya RLC devresidir. In another embodiment of the invention, said moisture sensing circuit (l) points (4) are electrically connected with the said conductive plates in its structure. is an RC, RL or RLC circuit connected.

Bulusun bir baska uygulamasinda, söz konusu RC, RL veya RLC devresi, söz konusu çamasir direncine paralel baglanan bir referans direnç (3) içermektedir. In another embodiment of the invention, said RC, RL or RLC circuit is It contains a reference resistor (3) connected parallel to the subject laundry resistor.

Bulusun bir baska uygulamasinda, söz konusu nem algilama devresi (1), elektriksel algilama noktalari (4) yapisindaki söz konusu iletken plakalar ile elektriksel olarak baglantili olan bir RC devresidir. In another embodiment of the invention, said moisture sensing circuit (1) is electrical sensing points (4) with said conductive plates in its structure It is an electrically connected RC circuit.

Bulusun bir baska uygulamasinda, söz konusu baslangiç asamasinda, söz konusu takip eden asamada uygulanan ikinci frekans degerine kiyasla, bir ikinci frekans degerinden yüksek olan bir birinci frekans degeri uygulanmaktadir. In another embodiment of the invention, in said initial stage, a second frequency compared to the second frequency value applied in the next step. A first frequency value higher than the value is applied.

Bulusun bir baska uygulamasinda, söz konusu baslangiç asamasinda, söz konusu takip eden asamada uygulanan çalisma orani degerine kiyasla, bir ikinci çalisma orani degerinden düsük olan bir çalisma orani degeri uygulanmaktadir. In another embodiment of the invention, in said initial stage, a second study compared to the study rate value applied in the next step. A run rate value that is lower than the run rate value is applied.

Bulusun bir baska uygulamasinda, nem algilama isleminin söz konusu baslangiç asamasinda 400 Hzslik bir frekans degeri ve %10'luk bir çalisma orani uygulanmakta, SÖZ konusu nem algilama isleminin takip eden bir asamasinda ise, 50 Hz'lik bir frekans degeri ve %20'lik bir çalisma orani uygulanmaktadir. In another embodiment of the invention, said starting point of the moisture sensing process is a frequency value of 400 Hz and an operating rate of 10% is applied, in a subsequent stage of the mentioned moisture detection process, A frequency value of 50 Hz and an operating rate of 20% are applied.

Bulusun bir baska uygulamasinda, söz konusu elektrikli ev cihazi, bir çamasir kurutucu veya bir çamasir yikayici kurutucudur. In another embodiment of the invention, said household electrical appliance is a laundry dryer or a washer dryer.

Bu bulus ile, asgari sayida devre elemanindan olusan, tasarimi asiri karmasik olmayan ve üretim maliyeti görece az olan bir nem algilama devresi gerçeklestirilmektedir. Filtre devresinin parametre degerleri dinamik bir sekilde degistirilerek, ölçülen direncin yüksek degerlerinde daha hassas bir okuma elde edilmesi saglanmaktadir.With this invention, the design is overly complex, consisting of a minimum number of circuit elements. A moisture sensing circuit with no and relatively low production cost is carried out. The parameter values of the filter circuit are dynamically changing, a more precise reading can be obtained at higher values of the measured resistance. is provided.

Claims (8)

  1. l) An electrical household appliance comprising a rotary drum in which laundry is placeable, conducting plates placed Within said drum and a moisture sensing circuit (1) measuring resistance of the laundry characterized in that; said moisture sensing Circuit (1) is an electrical filter circuit in electrical connection With said conducting plates, a pulse width modulated input signal is applied to said electrical filter circuit and laundry resistance between said conducting plates is measured by a first set of parameter values set during an initial phase of moisture sensing operation and a second set of parameter values set during a subsequent phase of said moisture sensing operation in the manner that at least one of the parameters including frequency, resistance, capacitance or inductance of said electrical filter circuit is changed from a first value to a second value at the end of said first phase Where a predetermined laundry resistance is measured.
  2. 2) An electrical household appliance as in Claim l, characterized in that said moisture sensing circuit (1) is an RC, RL or RLC circuit in electrical connection with said conducting plates in the form of sensing points (4).
  3. 3) An electrical household appliance as in Claim 2, Characterized in that said RC, RL or RLC circuit comprises a reference resistor (3) in parallel with said laundry resistance.
  4. 4) An electrical household appliance as in Claim 2 or 3, characterized in that said moisture sensing circuit (1) is an RC circuit in electrical connection With said conducting plates in the form of electrical sensing points (4).
  5. 5) An electrical household appliance as in Claim 4, characterized in that a first frequency value higher than a second frequency value is applied during said initial phase compared to said second frequency value applied during said subsequent phase.
  6. 6) An electrical household appliance as in Claim 4, characterized in that a duty cycle value lower than a second duty cycle value is applied during said initial phase compared to said second duty cycle value applied during said subsequent
  7. 7) An electrical household appliance as in Claim 4, characterized in that frequency value of 400 Hz and a duty cycle of 10% are set during said initial phase of moisture sensing operation and a frequency value of 50 Hz and a duty cycle of 20% are set during a subsequent phase of said moisture sensing operation.
  8. 8) An electrical household appliance as in Claim l, characterized in that said electrical household appliance is laundry dryer or combo washer and dryer appliance.
TR2016/10981A 2016-08-05 2016-08-05 Electrical household appliance having a moisture sensing circuit TR201610981A2 (en)

Priority Applications (3)

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TR2016/10981A TR201610981A2 (en) 2016-08-05 2016-08-05 Electrical household appliance having a moisture sensing circuit
PCT/EP2017/068923 WO2018024580A1 (en) 2016-08-05 2017-07-26 Electrical household appliance having a moisture sensing circuit
EP17751312.4A EP3494255A1 (en) 2016-08-05 2017-07-26 Electrical household appliance having a moisture sensing circuit

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TR2016/10981A TR201610981A2 (en) 2016-08-05 2016-08-05 Electrical household appliance having a moisture sensing circuit

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Publication number Priority date Publication date Assignee Title
US10260194B2 (en) * 2016-07-15 2019-04-16 Whirlpool Corporation Laundry treating appliance with a sensor

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CA2505571C (en) 2005-04-28 2008-07-29 Camco Inc. Clothes dryer moisture sensing circuit
DE102010038890A1 (en) * 2010-08-04 2012-02-09 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance for drying items of laundry and method for determining a measured quantity correlated with a degree of drying of the items of laundry

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