FI91890C - Washing or drying machine in which the weight of the washing is determined automatically - Google Patents

Washing or drying machine in which the weight of the washing is determined automatically Download PDF

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Publication number
FI91890C
FI91890C FI903762A FI903762A FI91890C FI 91890 C FI91890 C FI 91890C FI 903762 A FI903762 A FI 903762A FI 903762 A FI903762 A FI 903762A FI 91890 C FI91890 C FI 91890C
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Finland
Prior art keywords
washing
drying machine
drum
machine according
phase angle
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FI903762A
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Finnish (fi)
Swedish (sv)
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FI903762A0 (en
FI91890B (en
Inventor
Michel Kubacsi
Jean-Luc Roux
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Ciapem
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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
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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
    • D06F2103/70—Number of operational cycles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Control Of Ac Motors In General (AREA)

Description

9189091890

Pesu- tai kuivauskone, jossa pyykin paino todetaan auto-maattisestiWashing or drying machine in which the weight of the laundry is determined automatically

KeksintO liittyy pesu- tai kuivauskoneeseen, jossa 5 pyOrivaa rumpua kåyttaa edullisesti yleista tyyppia oleva sahkOmoottori ja jossa vaatekuormitus maaritetaan auto-maattisesti vaatteiden inertian funktiona rummun pyOrinta-akseliin nahden.The invention relates to a washing or drying machine in which the 5 rotating drums are preferably driven by a general type of electric motor and in which the garment load is automatically determined as a function of the inertia of the garments relative to the rotation axis of the drum.

Alalia on tunnettua, etta kotitalouksien pesuko-10 neissa on edullista etta koneeseen annettavan veden maara samoin kuin pesuainemaara ja pesukoneen toiminnan eri vai-heiden muut parametrit ovat riippuvaisia rummussa olevasta vaatekuormituksesta. Kuivauskoneiden toiminta riippuu myOs vaatekuormituksesta.It is known in the art that in household washing machines it is advantageous that the amount of water supplied to the machine as well as the amount of detergent and other parameters of the various stages of operation of the washing machine depend on the load on the drum. The operation of the dryers depends on myOs clothing load.

15 On jo esitetty erilaisia laitteita kuormituksen maarittamiseksi automaattisesti. KeksintO liittyy paran-nukseen EP-patentissa nro 84 402 090 selostettuun vaiinee-seen, jossa vaatekuormitus mitataan rummun kiertoakselin ympari kulkevan vaatteiden inertian L momenttina. Tama mo-20 mentti mitataan rummun kayttOmomentista maaratylia kiihty-vyydelia. KayttOmomenttia mitataan yleismoottorin lapi virtaavan sahkOvirran intensiteetilia.15 Various devices for automatically determining the load have already been presented. The invention relates to an improvement to the material described in EP Patent No. 84,402,090, in which the garment load is measured as the moment L of the inertia of the garments running around the axis of rotation of the drum. This torque is measured from the moment of use of the drum. The torque is measured by the intensity of the electric current flowing through the universal motor.

KeksinnOn mukaisesti yleisessa kayttdmoottorissa on vaihto-virta, ja sen nopeus maaråytyy prosessoria kflyttå-.· 25 van vaihesaadOn antamalla kaskylia. Tama prosessori mah- dollistaa vaatteiden inertian liikkeen mittauksen vaihe-kulman arvosta ilman, etta tarvitaan mitaån erityista sahkOvirran voimakkuuden mittauslaitetta.According to the invention, the general-purpose drive motor has an alternating current, and its speed is determined by the phase output of the processor. This processor makes it possible to measure the inertial movement of the garments from the value of the phase angle without the need for a special device for measuring the intensity of the electric current.

Vaihekulma riippuu yleensa syOttOjannitteen arvosta 30 Vs, joka on annettu rumpua kayttavaile moottorille. Tama jannite voi vaihdella laajoissa rajoissa 187 - 242 volttin vaiilia, eli mainittu arvo Vs on tunnettu sellaisen epavar-muusmarginaalin sisålla, joka joskus voi aiheuttaa epasuo-tavaa vaatekuormituksen mittauksen tarkkuuden puutetta.The phase angle usually depends on the value of the supply voltage 30 Vs given to the motor using the drum. This voltage can vary within wide limits from 187 to 242 volts, i.e. said value Vs is known within a margin of uncertainty which can sometimes lead to an undesirable lack of accuracy in measuring the load of clothing.

2 918902 91890

Taman puutteen voittamiseksi on keksinnOn mukaises-ti muodostettu pesu- tai kuivauskone, joka rununussa olevan vaatekuormituksen maarittåmiseksi sisaitaa vålineet vaat-teiden inertiamomentin maarittamiseksi rummun pyOrimisak-5 seliin nåhden. KeksinnOn mukaiselle pesu- tai kuivausko-neelle on tunnusomaista se, etta rummun moottoria ohjaa tietokone, erityisesti mikroprosessori, vaihesaatOOn liit-tyvålia kaskylia, joka prosessori maarittaa lisaksi iner-tiamomentin vaihekulman arvosta ja syOttOjannitteen arvos-10 ta, ja etta koneeseen kuuluu lisåksi vaiineet mainitun syOttOjannitteen mittaamiseksi.In order to overcome this shortcoming, a washing or drying machine is provided according to the invention, which, in order to determine the garment load on the rune, includes means for determining the moment of inertia of the garments relative to the axis of rotation of the drum. The washing or drying machine according to the invention is characterized in that the drum motor is controlled by a computer, in particular a microprocessor, in a phase-connected cascade, which processor additionally determines the inertia torque from the phase angle and the input voltage value, and To measure the supply voltage.

Mittaus suoritetaan edullisesti kayttamatta lisa-laitteita kuten volttimittaria kayttåen vain jo tietoko-neessa olevaa tietoa. Tassa tarkoituksessa tietokone aset-15 taa tiettyna ajanjaksona kiintean arvon vaihekulmalle ja tana aikana moottorin kiertonopeus maaritetaan, jolloin jannite lasketaan ennalta maaratysta vaihekulmasta ja nain mitatusta kiertonopeudesta.The measurement is preferably performed without the use of Lisa devices such as a voltmeter, using only the information already in the computer. For this purpose, the computer sets a fixed value for the phase angle for a certain period of time, and during this time the rotational speed of the motor is determined, whereby the voltage is calculated from the predetermined phase angle and thus the measured rotational speed.

Suhde, joka liittaa syOttOjannitteen vaihekulmaan 20 ja nopeuteen, riippuu muista parametreista, jotka periaat-teessa eivat vaihtele. Kuitenkin joillakin niista, erityisesti kitkamomentilla, joka vastustaa rummun pyOrimista, voi olla arvoja, jotka vaihtuvat ajan mukaan, eli koneen ikåantymisen myOta. Tåman vaihtelun huomioon ottamiseksi 25 eraassa suoritusmuodossa on tallennettu taulukko tietoko-neeseen. Tåma taulukko ilmaisee vakioparametrien vaihtelut koneen toimintakiertojen lukumaåran mukaan syOttOjannit-teen ja vaihekulman ja nopeuden vaiisessa suhteessa. Esi-merkiksi koneen jokaisen kayttOkerran yhteydessa laskimeen 30 lisatåån yksi yksikkO, niin ettå saadaan vaihtelua maini-tussa suhteessa olevaan vakioon (tai vakioihin).The ratio that connects the supply voltage to the phase angle 20 and the speed depends on other parameters which, in principle, do not vary. However, some of them, especially the friction torque that resists the rotation of the drum, may have values that change over time, i.e. due to the aging of the machine. To account for this variation, in one embodiment, a table is stored in a computer. This table shows the variations of the standard parameters according to the number of operating cycles of the machine in the silent relationship between the supply voltage and the phase angle and speed. For example, each time the machine is used, one unit is added to the calculator 30 to provide variation in a constant (or constants) in said ratio.

KeksinnOn edullisille suoritusmuodoille on tunnusomaista se, mita jåljempåna olevissa patenttivaatimuk-sissa on esitetty. KeksinnOn ominaisuudet ja edut kayvat 35 ilmi seuraavasta sen joidenkin suoritusmuotojen selostuk-Preferred embodiments of the invention are characterized by what is set out in the following claims. The features and advantages of the invention will become apparent from the following description of some embodiments thereof.

IIII

3 91890 sesta, jotka on tehty liittyen oheisiin piirustuksiin, joissa kuvio 1 on kaavio, joka esittaa pesukoneen rummun moottoria saåtGpiireineen ja 5 kuviot 2 ja 3 ovat kayria, jotka esittavat pesuko neen saadon toimintaa keksinnGn mukaisesti.3,91890, taken in connection with the accompanying drawings, in which Fig. 1 is a diagram showing a drum of a washing machine with its circuits, and Figs. 2 and 3 are diagrams showing the operation of a washing machine obtained according to the invention.

Esimerkissa pesukone, (jota ei ole esitetty koko-naan), on kotitalouksien konetyyppia, jossa on vaaterumpu rei'itettyine lieriGseinineen, joka rumpu pyGrii sailiOn 10 sisapuolella vaakasuoralla akselilla.In the example, the washing machine (not shown in its entirety) is a type of household machine with a clothes drum with perforated cylindrical walls, which drum rotates on the inside of the tank 10 on a horizontal axis.

Rummun sahkGmoottori 10 (kuvio 1) on yleista tyyp-pia. Se saa vaihto-virtaa 11, esimerkiksi 50 Hz verkkotaa-juudella syGtettyna jollain saatOkytkimelia 12 kuten esimerkiksi triakilla.The drum electric motor 10 (Fig. 1) is of a general type. It receives an alternating current 11, for example at a mains frequency of 50 Hz, when applied by one of the switch switches 12, such as a triac.

15 Kytkimen 12 ja nain myGs moottorin 10 saatGa vårten laitteessa on mikroprosessori 13 yhdistettyna triakin 12 saatOelektrodiin liitantapiirilia 14.15 The device 12 for the switch 12 and thus the motor 10 of the myGs has a microprocessor 13 connected to the input electrode 14 of the triac 12.

Mikroprosessori 13 laskee asetusarvonopeuden moot-torille 10. Tama asetusarvonopeus riippuu sen muistiin en-20 nalta tallennetusta ohjelmasta. Tama mikroprosessori muo-dostaa myGs komparaattorin nopeuden saatGa vårten. Tassa tarkoituksessa siina on syottO 13x, johon on liitetty moottorin 10 kayttaman takogeneraattorin (eli takometrin) 15 lahtGsignaali.The microprocessor 13 calculates the setpoint speed for the motor 10. This setpoint speed depends on the program stored in its memory. This microprocessor generates a myGs comparator in terms of speed. For this purpose, there is an input 13x to which the output signal of the tachogenerator (i.e. tachometer) 15 used by the motor 10 is connected.

25 Mikroprosessori 13 saataa triakin 12 avautumiskul- maa Θ (kuvio 2) vaihtovirtasignaalin 11 jokaisessa puoli-jaksossa, eli kestoa, jonka tama kytkin 12 on johtava ta-man signaalin 11 jokaisen vaiheen aikana.The microprocessor 13 transmits the opening angle Θ (Fig. 2) of the triac 12 in each half-cycle of the AC signal 11, i.e. the duration which this switch 12 conducts during each phase of the signal 11.

Kuvion 2 kåyra esittaa avautumiskulmaa Θ x-akselil-30 la ja vaihtovirtasignaalin 11 y-akselilla. Vaihtovirtasignaalin 11 yhden puolijakson aikana, eli vaihekulmien Θ ollessa 0 ja π radiaanien valilia, triakki on auki, eli ei-johtavassa tilassa, kulmien 0 ja Θ valilia ja on johtava kulmien Θ ja π valilia. Mikroprosessori 13 antaa saatG-35 pulssin triakin 12 sulkemiseksi.The curve in Fig. 2 shows the opening angle Θ on the x-axis-30a and the AC signal 11 on the y-axis. During one half cycle of the AC signal 11, i.e. with the phase angles Θ being 0 and π the valence of the radians, the triac is open, i.e. in the non-conductive state, the valence of the angles 0 and Θ and is the leading valence of the angles Θ and π. The microprocessor 13 emits a pulse of G-35 to close the triac 12.

« 4 91890«4 91890

Tata vaihekulmaa Θ, jonka mikroprosessori 13 maa-raa, kaytetåan mittaamaan rummussa olevien vaatteiden inertian L momenttia, eli mittamaan vaatteiden kuormitus-ta.This phase angle Θ, defined by the microprocessor 13, is used to measure the moment L of inertia L of the garments in the drum, i.e. to measure the load of the garments.

5 Tassa tarkoituksessa aloitetaan seuraavalla kaaval- la: C = (L + J) + CR (1)5 To this end, start with the following formula: C = (L + J) + CR (1)

dt Rdt R

Tassa kaavassa C on kayttOmomentti, L vaatteiden iner-tiamomentti rummun akseliin nahden, J rununun inertiamo-10 mentti sen kiertoakseliin nahden, de/dt rummun kiihtymis-nopeus (tai hidastus-) ja C„ rummun antama kuormitusmoment- ti.In this formula, C is the operating torque, L is the moment of inertia of the garments with respect to the axis of the drum, J is the moment of inertia of the rune with respect to its axis of rotation, de / dt is the acceleration rate (or deceleration) of the drum and C is the load torque given by the drum.

Yleismoottorissa kayttOmomentti on verrannollinen sen lapi virtaavan sahkOvirran voimakkuuteen seuraavasti: C = KI (2) 15 jossa K on moottorissa oleva vakio ja I sen lapi virtaavan sahkOvirran voimakkuus.In a universal motor, the operating torque is proportional to the intensity of the current flowing through its side as follows: C = KI (2) 15 where K is the constant in the motor and I is the intensity of the current flowing through its motor.

On edelleen tunnettua, etta yleismoottorin vasta-sahkoelektromotorinen voima E on verrannollinen sen pyO-20 rimisnopeuteen. Siksi voidaan esittaa: E = Κ'ω (3) jossa K' on vakio.It is further known that the counter-electroelectric force E of the universal motor is proportional to its pyO-20 ripple speed. Therefore we can show: E = Κ'ω (3) where K 'is a constant.

Tunnetaan myOs, etta jannite U moottorin navoissa riippuu vastasåhkOelektromotorisesta voimasta E, taman 25 moottorin antamasta impedanssista Z ja voimakkuudesta I seuraavassa suhteessa: 5 91890 U = E + ZI (4)It is also known that the voltage U at the motor terminals depends on the counterelectromotive force E, the impedance Z given by this motor 25 and the intensity I in the following ratio: 5 91890 U = E + ZI (4)

Tasta kaavasta voidaan paatellå, ettS: U = E + ZI = Κ'ω + ZI = Κ'(ύ + (5) ΛFrom this formula it can be deduced that S: U = E + ZI = Κ'ω + ZI = Κ '(ύ + (5) Λ

Moottoriin syOtetty jannite U on kulman Θ funktio 5 (kuvio 2) seuraavasti: C7 = Vs f (θ) = + ig (6) Λ jossa Vs on jannitteen 11 suurin amplitude.The voltage U applied to the motor is a function of the angle Θ 5 (Fig. 2) as follows: C7 = Vs f (θ) = + ig (6) Λ where Vs is the maximum amplitude of the voltage 11.

Kaavoista (5) ja (6) voidaan paatelia seuraavaa:From formulas (5) and (6) the following can be boat:

Vsf(0) =K^ + -^ = K^ + 4-<L + J^ (7)Vsf (0) = K ^ + - ^ = K ^ + 4- <L + J ^ (7)

* K K dt K* K K dt K

10 Edelia olevasta kaavasta (7) voidaan keksinndn mu- kaan paatelia vaatteiden inertiamomentin arvo L. On kui-tenkin havaittu, etta tama kaava kaytta hyvaksi verkkojan-nitteen arvoa Vs, joka voi olla vaihteleva. Tasta syysta on edullista mitata jannitetta Vs epåsuoralla menetelmaiia, 15 jossa ei kayteta mitaan erityista mittauslaitetta.According to the invention, the value L of the moment of inertia of the garments can be calculated from the above formula (7). However, it has been found that this formula takes advantage of the value Vs of the mains voltage, which can vary. For this reason, it is advantageous to measure the voltage Vs indirectly using a method in which no special measuring device is used.

Ensimmaisessa suoritusmuodossa mikroprosessori 13 on ohjelmoitu asettamaan ennalta maaratyt vaihekulman Θ arvot perattåisten jaksojen 20 ja 21 aikana, joiden kestot ovat tx ja t2 (kuvio 3). Ensimmaisen jakson 20 aikana kes-20 ton ollessa t2 vaihekulma on Øj suuruinen. Toisen jakson 21 aikana keston ollessa t2 vaihekulma on toisen maaratyn arvon 02 suuruinen.In the first embodiment, the microprocessor 13 is programmed to set predetermined phase angle Θ values during successive cycles 20 and 21 with durations tx and t2 (Fig. 3). During the first period 20, when the mid-20 ton is t2, the phase angle is Øj. During the second period 21, when the duration is t2, the phase angle is equal to the second determined value 02.

Jokaista vaihekulman Θ arvoa vastaa rummun kierto-nopeus ω, jota mitataan takogeneraattorilla (eli takomet-25 rilia) 15.Each value of the phase angle Θ corresponds to the rotation speed ω of the drum, which is measured by a tachogenerator (i.e. tachomet-25 rill) 15.

6 918906 91890

Kunkin vaiheen 20 ja 21 aikana, jolloin kestot ovat olleet vastaavasti ja t2, rummun kiertonopeus on vakio, eli kiihdytys άω/dt on nolla.During each of the phases 20 and 21, where the durations have been and t2, respectively, the rotational speed of the drum is constant, i.e. the acceleration άω / dt is zero.

Nain jakson 20 aikana voidaan esittaa edelia oleva 5 kaava (7) muodossaThus, during period 20, the above formula (7) may be represented in the form

Vsf(ei)K'<Ji1^R (8)Vsf (ei) K '<Ji1 ^ R (8)

/C/ C

Jakson 21 aikana kaava (7) voidaan esittaa vastaavasti muodossaDuring period 21, formula (7) may be represented in a corresponding manner

Vsf(e2)=K'v2 + -^R (9) 10 Kaavoista (8) ja (9) voidaan vahentamaiia tehda johtopaatOsVsf (e2) = K'v2 + - ^ R (9) 10 From formulas (8) and (9) it is possible to derive

Vs[f (02) -fiBj) ] =κ’{<ύ2-<ύ2) (10) josta saadaan . O). - ω, ^ mj - Av (11> 15 Nain Vs voidaan laskea mikroprosessorissa θ2:η ja θ2:η funktiona, jotka ovat vakioita, ja ω2:η ja ω^η funktiona, jotka mitataan.Vs [f (02) -fiBj)] = κ '{<ύ2- <ύ2) (10) from which is obtained. O). - ω, ^ mj - Av (11> 15 Nain Vs can be calculated in the microprocessor as a function of θ2: η and θ2: η, which are constants, and ω2: η and ω ^ η as a function, which are measured.

Laskeminen helpottuu, jos oletetaan, etta f(Θ) on verrannollinen Ø:aan, f(0) = Κχβ (12) misså Kx on vakio.The calculation is facilitated if we assume that f (Θ) is proportional to Ø, f (0) = Κχβ (12) where Kx is constant.

TMssa tapauksessa 20 7 91890 γΐ ω, - ω, ν· ί π (13>In the case of TM 20 7 91890 γΐ ω, - ω, ν · ί π (13>

Edelia esitetyisså laskelmissa oletettiin, etta kuormitusmomentilla CR on sama arvo nopeudella kuin no-peudella ω2. Olettamus ei ole tarkasti ottaen tSsmållinen.In the calculations presented above, it was assumed that the load torque CR has the same value at the speed as at the speed ω2. The assumption is not strictly accurate.

5 Sita voidaan kuitenkin vahvistaa haittaamatta mittauksen tarkkuutta, jos arvot 0: ja θ2 eivSt eroa liikaa toisis-taan, eli jos mainitut arvot ovat l&hellS toisiaan.5 However, it can be confirmed without compromising the accuracy of the measurement if the values 0: and θ2 do not differ too much from each other, i.e. if the said values are l & HellS.

Esimerkiksi Øx:n ja θ2:η arvot valitaan siten, ettS jakson 20 aikana rumpu pyOrii suuruusluokan 200 rpm nopeu-10 della ja j akson 21 aikana rumpu pyiSrii suuruusluokan 40C rpm nopeudella. Tåsså esimerkissS jaksojen kesto on sama, n. 18 sekuntia.For example, the values of Øx and θ2: η are selected so that during period 20 the drum rotates at an order of magnitude of 200 rpm and during period 21 the drum rotates at an order of magnitude of 40C rpm. In this example, the duration of the cycles is the same, about 18 seconds.

Kuvion 3 esittSmSssa suoritusmuodossa jaksoja 20 ja 21 seuraavat jaksot 22 ja 23, joiden kestot ovat vastaa-15 vasti t3 ja t4, joiden aikana nrååratyn suuruiset kiihdytta-miset kohdistetaan rumpuun. Naiden kummankin kiihdytysgra-dientin aikana vaihekulmat ja 0'2 maaritetaan vain sa-malle nopeudelle. Talla saadaan L maaritetyksi seuraavasta kaavasta: 20 jolloin dω1/dt on gradienttia 22 vastaava kiihdytys ja d<i>2/dt on gradienttia 23 vastaava kiihdytys. Nama kiihdy-tykset tapahtuvat esimerkiksi nopeuksien 200 rpm ja 400 rpm vaiilia.In the embodiment shown in Figure 3, periods 20 and 23 are followed by periods 22 and 23, the durations of which are t3 and t4, respectively, during which accelerations of a specified magnitude are applied to the drum. During each of these acceleration gradients, the phase angles and 0'2 are determined for the same velocity only. Here, L is determined by the following formula: 20 where dω1 / dt is the acceleration corresponding to the gradient 22 and d <i> 2 / dt is the acceleration corresponding to the gradient 23. These accelerations take place, for example, at speeds of 200 rpm and 400 rpm.

25 Em. kaavassa (14) oleva arvo Vs saadaan aiemmasta, kaavan (11) tai (13) yhteydessa suoritetusta laskutoimi-tuksesta. Tama arvo Vs voidaan mytts mitata suoraan.25 Em. the value Vs in formula (14) is obtained from a previous calculation performed in connection with formula (11) or (13). This value of Vs can be mytts measured directly.

8 918908 91890

Toisessa suoritusmuodossa, sen sijaan etta olisi kaksi peråttåista vaihetta 20 ja 21, joiden aikana j&rjes-tetåan erilaisia vaihekulman arvoja, on vain yksi jakso, jonka kesto on t5 (ei esitetty), jonka aikana asetetaan 5 vaihekulma θ3 ja mitataan nopeus ω3 takogeneraattorilla 15.In the second embodiment, instead of having two successive phases 20 and 21, during which different phase angle values are arranged, there is only one period with a duration t5 (not shown), during which the phase angle θ3 is set and the speed ω3 is measured by the tachogenerator 15.

Arvo Vs maaritetaan siten seuraavalla kaavalla:The value of Vs is thus determined by the following formula:

Vsf(d3) =^83 = *'ω3 + R (15) ΛVsf (d3) = ^ 83 = * 'ω3 + R (15) Λ

Termi ZCR/K ajatellaan vakioksi, silia kiertonopeus ω3 poikkeaa suhteellisen vahan ennalta måaratysta keskiar-10 vosta.The term ZCR / K is considered to be constant, the Silia rotation speed ω3 deviates relatively slightly from the predetermined average of 10 v.

Tama termi ZCK/K syOtetaan mikroprosessorin luku-muistiin laadittaessa pesukoneen saatOjarjestelmaa. Janni te Vs voidaan siten maarittaa seuraavalla suhteella: = S f(03) 15 Tassa kaavassaThis term ZCK / K is entered into the read-only memory of the microprocessor when designing the washing machine supply system. Janni te Vs can thus be defined by the following relation: = S f (03) 15 In this formula

Kn = —R KKn = —R K

Vastaavuustaulukko ω3 ja Vs vaiilia syOtetaan mikroprosessorin muistiin. Taiia saadaan Vs:n arvo maaratyksi heti arvosta ω3.The correlation table ω3 and Vs vile are fed into the memory of the microprocessor. The value of Vs in Tai is immediately determined from the value ω3.

20 Kuormitusmomentti CR, joka johtuu paaasiassa kitkas- ta, vaihtelee pesukoneen kayttOkertojen tai sen kayttO-kierrosten lukumååran funktiona.20 The load torque CR, which is mainly due to friction, varies as a function of the number of times the washing machine is used or the number of times it is used.

CR:n vaihtelun laki mainitun kayttOkierrosten maardn funktiona voidaan maarata kokeellisesti ja kierrosmaaran 25 ja momentin CR arvon vaiinen vastaavuustaulukko syOtetaan mikroprosessorin muistiin.The law of variation of CR as a function of said usage speed can be determined experimentally and a silent correspondence table between the speed 25 and the value of torque CR is entered into the memory of the microprocessor.

• 9 91890• 9,91890

Koneen suorittamien kierrosten lukumåårå tallenne-taan esimerkiksi mikroprosessoriin liitettyyn EEPROM-tyyppiseen muistiin. Tahån lukuun lisåtåån yksi yksikko jokaisen kåyttokierroksen jålkeen, eli sen jålkeen kun on 5 ensiksi havaittu, ettå virta on påållå, ja toiseksi, ettå pesukoneen kayttoohjelman viimeinen vaihe on saatu lop-puun. On selvåsti mahdollista tallentaa kierrosten luku-maårå muistiin toisella laitteella, kuten esimerkiksi elektromekaanistyyppisellå laskimella.The number of revolutions performed by the machine is stored, for example, in an EEPROM-type memory connected to the microprocessor. In any figure, one unit is added after each cycle of operation, i.e. after it has first been detected that the power is on and secondly that the last stage of the washing machine operating program has been completed. It is clearly possible to store the number of revolutions in another device, such as an electromechanical calculator.

Claims (11)

1. Tvatt- eller torkmaskin som fOr bestamning av belastningen från de i trumman befintliga kiaderna inbe- 5 griper organ fttr bestamning av kl&dernas trOghetsmoment i fOrhållande till trummans rotationsaxel, k a η n e -t e c k n a d darav, att trummans motor (10) styrs av en dator (13), i synnerhet en mikroprocessor, medelst ett fasregleringskommando, vilken processor ytterligare bes-10 tammer trbghetsmomentet ur fasvinkelns varde Θ och ur mat-ningsspånningens varde Vs, och att det till maskinen dessu-tom hOr organ fbr matning av namnda matningsspanning.1. Washing or drying machine which, for determining the load from the drums contained in the drum, includes means for determining the inertia of the clothes in relation to the axis of rotation of the drum, which can be controlled by a drum motor (10) (13), in particular a microprocessor, by means of a phase control command, which further determines the moment of inertia from the value of the phase angle and from the value Vs of the supply voltage, and that there is also a means for supplying said supply voltage to the machine. 2. Tvått- eller torkmaskin enligt patentkravet 1, kannetecknad dårav, att fasvinkeln fOr matning 15 av matningsspånningen Vs i begynnelsen av anordningens funktion ges ett bestamt varde θ3, att trummans rota-tionshastighet ω3 beståms exempelvis med en av motorn driven takogenerator (15), och att processorn bestammer spån-ningsvardet Vs ur det fOr fasvinkeln givna vardet θ3 och 20 det uppmatta hastighetsvardet ω3.2. A washing or drying machine according to claim 1, characterized in that the phase angle for supplying the supply voltage Vs at the beginning of the operation of the device is given a fixed value θ3, that the rotational speed of the drum ω3 is determined, for example, by a roof generator (15). and that the processor determines the chip value Vs from the value given for the phase angle θ3 and the measured velocity value ω3. 3. Tvatt- eller torkmaskin enligt patentkravet 2, kannetecknad darav, att det till processorns (13) ingång har anslutits en hastighetsmatare (15) fdr regiering av motorns hastighet som en funktion av ett i ·. 25 processorns minne befintligt program.3. Washing or drying machine according to claim 2, characterized in that a speed feeder (15) has been connected to the input of the processor (13) for controlling the speed of the motor as a function of a ·. Of the processor's existing program memory. 4. Tvatt- eller torkmaskin enligt patentkravet 2 eller 3, kannetecknad darav, att spanningen Vs bestams ur f61jånde fbrhållande: Κ'ω^ + K" γ = -_ (21) s f(e3) 30 dar K' och K' ' ar konstanter, f(03) en bestamd funktion av den fbrutbestamda fasvinkeln θ3 och ω3 trummans rotationshastighet vid fasvinkeln θ3. « 91890Washing or drying machine according to Claim 2 or 3, characterized in that the voltage Vs is determined from the previous condition: Κ'ω ^ + K "γ = -_ (21) sf (e3) 30 K 'and K' constants, f (03) a definite function of the predetermined phase angle θ3 and ω3 the rotational speed of the drum at phase angle θ3. «91890 5. Tvatt- eller torkmaskin enligt patentkravet 4, kånnetecknad dårav, att till den hor organ for lagring av antalet funktionscykler for maskinen och for att bringa parameterns K'' varde att bero på detta antal.A washing or drying machine according to claim 4, characterized in that the means for storing the number of operating cycles for the machine and for bringing the parameter K '' were due to this number. 6. Tvatt- eller torkmaskin enligt patentkravet 1, kannetecknad dårav, att det har anordnats en andra fas, under vilken fasvinkeln bibehåller ett konstant varde θ2, som år olikt ett forstå varde Blf och trummans rotationshastighet ω2 uppmåts, varvid spånningen Vs beståms 10 ur de givna fasvinklarna θ2, och ur de under dessa två faser uppmåtta hastigheterna (ω2 och ωχ).6. A washing or drying machine according to claim 1, characterized in that a second phase is arranged, during which the phase angle maintains a constant value θ2, which is different from an understanding each Blf and the rotational speed ω2 is measured, the voltage Vs being determined from the given the phase angles θ2, and from the velocities measured during these two phases (ω2 and ωχ). 7. Tvatt- eller torkmaskin enligt patentkravet 6, kannetecknad dårav, att spånningen Vs beståms på basen av foljande forhållande: jd_ ω2 - s' Kl θ2 - Θ, 15 dår K' och K'' år konstanter.7. Washing or drying machine according to claim 6, characterized in that the voltage Vs is determined on the basis of the following ratio: jd_ ω2 - s 'Kl θ2 - Θ, 15 bad K' and K '' are constants. 8. Tvatt- eller torkmaskin enligt patentkravet 6 eller 7, kånnetecknad dårav, att fasvinklar-nas vården och θ2 år sådana, att hastigheten ωχ vinder den 20 ena fasen år i området 200 rpm och under den foljande år trummans rotationshastighet i området 400 rpm.8. Washing or drying machine according to claim 6 or 7, characterized in that the phase angles of care and θ2 are such that the velocity ωχ wins the 20 one phase years in the range 200 rpm and during the following year the rotational speed of the drum in the range 400 rpm. 9. Tvått- eller torkmaskin enligt något av ovenstående patentkrav, kånnetecknad dårav, att processorn beståmmer troghetsmomentet L ur fasvinkeln och 25 spånningen Vs på basen av foljande forhållande: Vsf(Q) =κ'ω + -Ζ£=Κ'ω + -^ (L + Jj +~R K K at K dår ω år motorns rotationshastighet, K' och K år konstanter, Z år motorns impedans, J trummans troghetsmo-ment och CR år trummans belastningsmoment. « 918909. A washing or drying machine according to any one of the preceding claims, characterized in that the processor determines the moment of inertia L from the phase angle and the voltage Vs on the basis of the following ratio: Vsf (Q) = κ'ω + -Ζ £ = Κ'ω + - ^ (L + Jj + ~ RKK at K bad ω is the rotational speed of the motor, K 'and K are constants, Z is the motor impedance, J the moment of inertia and CR is the torque of the drum. «91890 10. Tvått- eller torkmaskin enligt något av ovan-stående patentkrav, kånnetecknad dårav, att trumman kan for beståmning av troghetsmomentet bringas att rotera med två olika efterfoljande accelerationsvården, 5 och att troghetsmomentet L kan beråknas på basen av skill-naden mellan for det forstå en måtning utford under den forstå accelerationen, och for det andra en måtning utford under den andra accelerationen.A washing or drying machine according to any one of the preceding claims, characterized in that the drum can be rotated with two different successive acceleration values for determining the moment of inertia, and that the moment of inertia L can be calculated on the basis of the difference between the one measure challenge during it understand the acceleration, and second, one measure challenge during the second acceleration. 11. Tvått- eller torkmaskin enligt något av ovan-10 stående patentkrav, kånnetecknad dårav, att trummans motor år en våxelstromsmotor av universaltyp. i11. A washing or drying machine according to any one of the preceding claims, characterized in that the drum motor is a universal AC motor. in
FI903762A 1989-07-28 1990-07-27 Washing or drying machine in which the weight of the washing is determined automatically FI91890C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910212A FR2650844B1 (en) 1989-07-28 1989-07-28 WASHING MACHINE OR DRYER IN WHICH THE LOAD OF LAUNDRY IS DETERMINED AUTOMATICALLY
FR8910212 1989-07-28

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FI903762A0 FI903762A0 (en) 1990-07-27
FI91890B FI91890B (en) 1994-05-13
FI91890C true FI91890C (en) 1994-08-25

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EP (1) EP0410827B1 (en)
JP (1) JPH0370591A (en)
DE (1) DE69021458T2 (en)
ES (1) ES2077657T3 (en)
FI (1) FI91890C (en)
FR (1) FR2650844B1 (en)
NO (1) NO171800C (en)

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Publication number Priority date Publication date Assignee Title
DE4336349A1 (en) * 1993-10-25 1995-04-27 Bosch Siemens Hausgeraete Method for determining the mass of wet laundry in a laundry drum
DE4336350A1 (en) * 1993-10-25 1995-04-27 Bosch Siemens Hausgeraete Method for determining the amount of laundry in a laundry treatment machine
IT1267587B1 (en) * 1994-09-28 1997-02-07 Zanussi Elettrodomestici PERFECTED LAUNDRY WASHING MACHINE WITH AUTOMATIC WEIGHT DETERMINATION
DE19832292A1 (en) * 1998-07-17 2000-01-20 Bsh Bosch Siemens Hausgeraete Registering loading weight of laundry drum of washing machine or dryer
KR100701949B1 (en) * 2005-02-14 2007-03-30 엘지전자 주식회사 Detecting method for laundary weight of drum type washing machine
US8186227B2 (en) 2009-08-10 2012-05-29 Whirlpool Corporation Method and apparatus for determining load amount in a laundry treating appliance
US8381569B2 (en) 2009-11-17 2013-02-26 Whirlpool Corporation Method and apparatus for determining load amount in a laundry treating appliance
US8555522B2 (en) 2010-10-21 2013-10-15 Whirlpool Corporation Laundry treating appliance with inlet temperature compensation
US9091011B2 (en) 2011-12-20 2015-07-28 Whirlpool Corporation Continuous high speed inertia detection
KR101505189B1 (en) 2012-10-09 2015-03-20 엘지전자 주식회사 Laundry treatment machine and the method for operating the same
JP7426197B2 (en) * 2019-03-27 2024-02-01 三星電子株式会社 washing machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553881B1 (en) * 1983-10-25 1987-11-20 Esswein Sa METHOD FOR DETERMINING A LAUNDRY LOAD IN A ROTATING DRUM, AND WASHING AND / OR DRYING MACHINE USING THE SAME
JPS63226395A (en) * 1987-03-14 1988-09-21 株式会社東芝 Detector for quantity of clothing of washing machine combining dehydration

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Publication number Publication date
EP0410827B1 (en) 1995-08-09
NO171800B (en) 1993-01-25
NO903352L (en) 1991-01-29
ES2077657T3 (en) 1995-12-01
JPH0370591A (en) 1991-03-26
DE69021458D1 (en) 1995-09-14
FR2650844A1 (en) 1991-02-15
FR2650844B1 (en) 1991-10-11
FI903762A0 (en) 1990-07-27
FI91890B (en) 1994-05-13
NO903352D0 (en) 1990-07-27
NO171800C (en) 1993-05-05
DE69021458T2 (en) 1996-01-25
EP0410827A1 (en) 1991-01-30

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