EP3144425B1 - Procede de fonctionnement d'un seche-linge - Google Patents

Procede de fonctionnement d'un seche-linge Download PDF

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Publication number
EP3144425B1
EP3144425B1 EP16187187.6A EP16187187A EP3144425B1 EP 3144425 B1 EP3144425 B1 EP 3144425B1 EP 16187187 A EP16187187 A EP 16187187A EP 3144425 B1 EP3144425 B1 EP 3144425B1
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EP
European Patent Office
Prior art keywords
moisture
tumble dryer
stored
gradient threshold
course
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16187187.6A
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German (de)
English (en)
Other versions
EP3144425A1 (fr
Inventor
Rebecca Grill
Pascal Hain
Kay Schmidt
Steffen Weiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Priority to PL16187187T priority Critical patent/PL3144425T3/pl
Publication of EP3144425A1 publication Critical patent/EP3144425A1/fr
Application granted granted Critical
Publication of EP3144425B1 publication Critical patent/EP3144425B1/fr
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Classifications

    • 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
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/30—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/33—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/30—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/35—Temperature; Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • 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
    • 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
    • D06F2103/08—Humidity
    • 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
    • D06F2103/28—Air properties
    • D06F2103/34—Humidity
    • 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
    • D06F2103/38—Time, e.g. duration
    • 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
    • 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
    • D06F2105/28—Electric heating
    • 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

Definitions

  • the invention relates to a method for operating a tumble dryer in order to dry wet laundry.
  • the purpose of the invention is to control the drying process as a function of a largely automated detection of the main substance content or the main fibers of the laundry to be dried.
  • the invention has for its object to provide an aforementioned method, with the problems and disadvantages of the prior art can be avoided and it is particularly possible to provide a practical method, with the operation of a tumble dryer, the main fiber content of the to be dried Laundry can be detected to adjust the operation of the tumble dryer, especially in terms Temperature profile or maximum temperature. This way, sensitive fibers can be spared.
  • the humidity of the air in the tumble dryer or the time course is detected or measured.
  • the absolute humidity or humidity can be measured, for which purpose a correspondingly suitable humidity sensor can be used for an absolute humidity measurement, as described for example in US Pat aforementioned DE 102006053274 A1 is disclosed.
  • the relative humidity in the air in the tumble dryer can be measured with a corresponding humidity sensor.
  • Such humidity sensors for a relative humidity measurement are now available inexpensively and work sufficiently accurately.
  • the temperature of the air in the tumble dryer can advantageously be recorded in the course of time, in order in turn to be able to infer the values for the required moisture.
  • the measurement or detection can only begin after 1 to 3 minutes in order to rule out prevailing inaccuracies at the very beginning.
  • the course of the measured moisture is compared with stored curves over time for the moisture.
  • a slope of the course of the measured moisture ie its slope values, can be compared with stored slope limit values of the moisture.
  • corresponding gradients and / or slope limits are stored, namely for fibers from the group cotton, wool, synthetic fibers. Mainly such a synthetic fiber is PE or polyamide.
  • These gradients or slope limits can be stored in a memory of a tumble dryer control.
  • Corresponding courses can be stored for the stored time profiles, that is to say curves which can be stored as a diagram or really as a continuous continuous course over time, for example for the first 10 minutes to 15 minutes.
  • slope limit values simple values can be stored without a time course, for example as maximum gradient limit values.
  • the slope limits are stored with a certain time, ie the time at which they are typically exceeded or exceeded, depending on the main fiber content or proportion of substance in the laundry to be dried.
  • these slope limits may be between 1 minute to 3 minutes and 10 minutes to 15 minutes, advantageously between 3 minutes and 10 minutes. This is just the beginning of the drying process.
  • slope values are compared at certain times, in particular during the ascent, then this is usually simpler and possibly even more accurate.
  • a stored upper gradient limit value is exceeded, a major proportion of the material to be dried is recognized by synthetic fibers.
  • a stored lower slope limit value is exceeded, a major substance content is recognized with wool or wool fibers.
  • the detected slope limit is between the upper and lower slope limits, then a major proportion of cotton or cotton fiber is detected. This can, as I said, be made at a good time. In this alternative, easily recognizable, an evaluation or detection easier. It only needs to be determined at a certain time, for example, after 3 minutes to 10 minutes, the slope value from the detected time course of the moisture, which is easy. Then, this detected slope value is compared with the stored slope limit values and a classification of the laundry to be dried into one of the three categories is made.
  • the operation of the tumble dryer or the drying process can be adjusted.
  • wool whereby here comes to the fact that the speed or the drum movement of the tumble dryer should be rather slow or gentle, since wool is relatively sensitive. Overall, this is less important for cotton, as it can be dried relatively easily with high temperatures and strong drum movement.
  • the slope limit values can not only be stored as individual values at exactly one point in time, but also as a diagram or as a time course. Then several times, that is to say at several points in time, it may then be attempted to detect these slope values and to compare them with the stored slope limit values at given times.
  • the temperature in the tumble dryer can be recorded in their time course.
  • a detection of the absolute humidity makes it possible, at least if at the beginning of the drying process, the temperature is detected in the tumble dryer over time, then to determine the relative humidity.
  • a temperature sensor and a humidity sensor can be formed separately from each other to use each accurate and cost-effective sensors can.
  • the relative humidity in the tumble dryer can be measured directly with a corresponding humidity sensor, which is designed for relative humidity measurement. Also, it is possible to additionally detect by means of a temperature sensor, the temperature of the air in the dryer in the time course to gain more information. In particular, it can then be calculated from the absolute humidity. Here too, at least at the beginning of the drying process, the temperature of the air in the tumble dryer should be recorded in addition to the moisture.
  • the operation of the laundry dryer is precisely adapted to it. This applies to temperature profile, maximum temperature, drum movement, speed and / or duration of the drying process. So on the one hand damage to the fibers or the laundry to be dried can be avoided. On the other hand, the drying process can be carried out as quickly and / or energy-efficiently as possible.
  • a clothes dryer 11 is shown for the method according to the invention.
  • the presentation is limited to the functionally essential parts and is only intended to illustrate how these essential parts work.
  • a load compartment 12 is laundry 14 with a residual moisture after washing or spinning.
  • This cargo space 12 is usually rotated or rotated, but this does not play a significant role for the invention.
  • Air is introduced into the loading space 12 via an air inlet 16.
  • the air flow is generated by the fan 17, 18 air is heated by the downstream heater for drying the laundry 14.
  • an air outlet 20 leads out of the loading space 12 to the outside, which identifies the tumble dryer 11 as an exhaust air dryer.
  • the warm air is thus, as known from such dryers, supplied to the laundry 14, absorbs moisture and transports them through the air outlet 20 to the outside, so as to dry the laundry.
  • a humidity sensor 22 is arranged in the air outlet 20.
  • a humidity sensor 22 is known to the person skilled in the art and need not be explained in detail here.
  • the humidity sensor 22 is connected to a controller 24, as well as the fan 17 and the heater 18.
  • the controller 24 has a memory 25, possibly also integrated therein, in which various values or gradients can be stored, which will be discussed in more detail below becomes.
  • a temperature sensor 23 is arranged in the air outlet 20, which is also connected to the controller 24. It is advantageous a conventional temperature sensor, particularly advantageous with resistance measurement.
  • the moisture sensor 22 may advantageously be designed to measure the absolute humidity, that is, the exhaust air in the air outlet 20. Alternatively, it may also be a humidity sensor for a relative humidity measurement, which may be less expensive.
  • the temperature sensor 23 is provided in the air outlet 20. Here it is located just before the humidity sensor 22, but can also be arranged opposite or shortly behind it. Such a tumble dryer is in Essentially from the aforementioned DE 102006053274 A1 to which reference is explicitly made in this regard.
  • the invention can also be applied to a condensation dryer in a modified form.
  • a corresponding moisture sensor is provided in an air outlet of the cargo space in front of a downstream condensation device.
  • the moisture in the exhaust air can be detected there as well.
  • the dashed thin pattern PE shows an amount of 1.2 kg of laundry from polyester fibers and a humidity of 40%.
  • the thin dot-dash line WO shows an amount of 1.2 kg of wool laundry with a humidity of 40%.
  • the above-mentioned rise range or the beginning of the drying process is considered here in the first minutes, measured for a maximum of the first 15 minutes, advantageously for the first 3 minutes to 10 minutes. It can be seen in this rise range that the course is indeed similar, but depending on the type of fibers of the laundry has different pitch, which of course results in different courses.
  • the lowest slope is expected to WO for wool. In between are the two courses C01 and CO2 for cotton, whereby, as expected, the course for the larger amount of moist cotton than course CO2 is steeper and rises higher than for the smaller amount of cotton than course C01.
  • a stored lower slope limit S GU which is also shown dotted, may be between the slope values of the curves C01 and WO.
  • the upper slope threshold S GO is exceeded or fallen below and the lower slope limit S GU is exceeded or not reached, a division into the fiber groups PE, CO or WO, ie Synthetic fibers, cotton or wool, are made. Whether the actual slope value is actually recorded exactly plays a minor role, as long as the measurement is accurate enough to reliably, reliably and accurately determine whether or not one of the gradient limit values is exceeded or undershot. Even though the differences in the slope values in the Fig. 2 do not look very clear, so they are already calculated.
  • the slope value S PE is about 25% greater than the slope limit S GO , although it does not look like it.
  • a measurement relatively early after the start of the drying process or in its initial phase, for example after the said 3 minutes, not only has the advantage that it then very early detection of the exclusive or main substance content is possible, for example, in sensitive fibers such as synthetic fibers or wool to choose a maximum temperature rather low and possibly also to choose a speed low, so that damage can be avoided. Furthermore, here are just the increases still very different, so that even a particularly good detection or differentiation of the respective slope values is possible. At the time t 10 minutes, a distinction would not be so good or actually no longer possible.
  • these basic courses or course types could also be stored and, by comparing a course of the humidity recorded in the air outlet 20 over time with a stored course, a conclusion can be drawn on the main substance portion in the laundry 14. For this purpose, however, at least the achievement of the maximum value and a subsequent drop would have to wait to be expected. On the one hand, this means a certain waiting time until detection. On the other hand, if the laundry 14 is dried at a very high temperature, damage to the more sensitive synthetic fibers or wool may possibly already occur. In this respect, comparing the slope values is considered the most advantageous option because it is also very fast.

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

Claims (11)

  1. Procédé de fonctionnement d'un sèche-linge (11) destiné à sécher du linge humide (14), comprenant les étapes suivantes:
    - après le début du processus de séchage du linge humide (14) dans le sèche-linge (11), la courbe de variation de l'humidité (CO1, CO2, PE, WO) de l'air dans le sèche-linge est mesurée, dans lequel l'humidité est mesurée dans la plage de croissance de la courbe de variation de l'humidité et/ou pendant une phase initiale de la courbe du processus de séchage,
    - lors d'une étape suivante, la courbe de variation de l'humidité mesurée est comparée à des courbes de variation stockées pour l'humidité et/ou un gradient de la courbe de variation de l'humidité mesurée est comparé à des valeurs limites stockées (SGU, SGO) de l'humidité,
    dans lequel des courbes de variation et/ou des valeurs limites de gradient (SGU, SGO) sont stockées pour des fibres du groupe suivant : coton, laine, fibres synthétiques,
    dans lequel une valeur limite supérieure de gradient (SGO) et une valeur limite inférieure de gradient (SGU) sont stockées,
    - dans lequel, lorsque la valeur limite supérieure de gradient (SGO) pour le linge (14) est dépassée, une proportion principale de matériau contenant des fibres synthétiques (PE) est reconnue, lorsque la valeur limite inférieure de gradient (SGU) n'est pas atteinte, une proportion principale de matériau contenant de la laine (WO) est reconnue et, entre la valeur limite supérieure de gradient (SGO) et la valeur limite inférieure de gradient (SGU), une proportion principale de matériau contenant du coton (CO1, CO2) est reconnue,
    - le fonctionnement du sèche-linge (11) est adapté au matériau des fibres détectées en ce qui concerne la courbe de variation de température, la température maximale, le mouvement du tambour, la vitesse de rotation et/ou la durée du processus de séchage.
  2. Procédé selon la revendication 1, caractérisé en ce que les valeurs limites de gradient (SGU, SGO) sont stockées sous la forme d'un diagramme et/ou sous la forme d'une courbe de variation temporelle.
  3. Procédé selon la revendication 1, caractérisé en ce que les valeurs limites de gradient (SGU, SGO) sont stockées sous la forme de valeurs numériques pures.
  4. Procédé selon la revendication 3, caractérisé en ce que les valeurs limites de gradient (SGU, SGO) sont stockées sous la forme de valeurs numériques pures à un instant donné.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'humidité absolue dans le sèche-linge (11) est mesurée au moyen d'un capteur d'humidité (22).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que la température de l'air dans le sèche-linge (11) est détectée sous forme de courbe de variation temporelle.
  7. Procédé selon la revendication 6, caractérisé en ce que la température de l'air dans le sèche-linge (11) est détectée au moins au début du processus de séchage sous forme de courbe de variation temporelle.
  8. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'humidité relative de l'air dans le sèche-linge (11) est mesurée au moyen d'un capteur d'humidité (22) correspondant destiné à mesurer l'humidité relative.
  9. Procédé selon la revendication 8, caractérisé en ce que la température de l'air dans le sèche-linge (11) est en outre détectée sous forme de courbe de variation temporelle.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce qu'au moins au début du processus de séchage, la température de l'air dans le sèche-linge (11) est en outre détectée sous forme de courbe de variation temporelle.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que le fonctionnement du sèche-linge (11) est adapté au matériau des fibres reconnues avec une température maximale inférieure lorsque les fibres reconnues sont des fibres synthétiques (PE) et de la laine (WO).
EP16187187.6A 2015-09-15 2016-09-05 Procede de fonctionnement d'un seche-linge Active EP3144425B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16187187T PL3144425T3 (pl) 2015-09-15 2016-09-05 Sposób działania suszarki bębnowej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015217667.3A DE102015217667A1 (de) 2015-09-15 2015-09-15 Verfahren zum Betrieb eines Wäschetrockners

Publications (2)

Publication Number Publication Date
EP3144425A1 EP3144425A1 (fr) 2017-03-22
EP3144425B1 true EP3144425B1 (fr) 2019-07-17

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EP16187187.6A Active EP3144425B1 (fr) 2015-09-15 2016-09-05 Procede de fonctionnement d'un seche-linge

Country Status (6)

Country Link
US (1) US10323351B2 (fr)
EP (1) EP3144425B1 (fr)
CN (1) CN106524695B (fr)
DE (1) DE102015217667A1 (fr)
ES (1) ES2748936T3 (fr)
PL (1) PL3144425T3 (fr)

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US9206543B2 (en) * 2011-10-14 2015-12-08 Ecolab Usa Inc. Dryer monitoring
EP2832918B1 (fr) * 2013-08-01 2018-01-31 Electrolux Appliances Aktiebolag Appareil de traitement du linge et procédé pour faire fonctionner un tel appareil
DE102015217667A1 (de) * 2015-09-15 2017-03-16 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines Wäschetrockners

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US20170073880A1 (en) 2017-03-16
EP3144425A1 (fr) 2017-03-22
CN106524695A (zh) 2017-03-22
PL3144425T3 (pl) 2020-01-31
DE102015217667A1 (de) 2017-03-16
US10323351B2 (en) 2019-06-18
CN106524695B (zh) 2020-07-03
ES2748936T3 (es) 2020-03-18

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