EP3702509B1 - Appareil domestique comportant un dispositif d'équilibrage à billes et un contrôle de la viscosité des fluides - Google Patents

Appareil domestique comportant un dispositif d'équilibrage à billes et un contrôle de la viscosité des fluides Download PDF

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Publication number
EP3702509B1
EP3702509B1 EP19159962.0A EP19159962A EP3702509B1 EP 3702509 B1 EP3702509 B1 EP 3702509B1 EP 19159962 A EP19159962 A EP 19159962A EP 3702509 B1 EP3702509 B1 EP 3702509B1
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EP
European Patent Office
Prior art keywords
fluid
home appliance
viscosity
controller
rotary drum
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
EP19159962.0A
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German (de)
English (en)
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EP3702509A1 (fr
Inventor
Jakob Melzow
Jun Qian
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.)
BSH Hausgeraete GmbH
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BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to EP19159962.0A priority Critical patent/EP3702509B1/fr
Priority to PL19159962T priority patent/PL3702509T3/pl
Priority to CN202010119546.4A priority patent/CN111621958B/zh
Publication of EP3702509A1 publication Critical patent/EP3702509A1/fr
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Publication of EP3702509B1 publication Critical patent/EP3702509B1/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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • 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
    • 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
    • D06F2103/26—Imbalance; Noise level
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • 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
    • 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
    • D06F34/16—Imbalance
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets

Definitions

  • the disclosure relates to a home appliance such as a washing machine and/or dryer with ball balancer and controller for determining the viscosity of a fluid filled in the ball balancer and to a corresponding method.
  • the disclosure particularly relates to techniques for determination of the actual viscosity by evaluating the period length of the envelope curve of an oscillation signal generated by the home appliance in operation.
  • Drum washing machines garments are usually unevenly distributed in the drum, in particular when wet garments are embedded in the drum.
  • the rotating garments in the drum are in unbalance condition, when the drum is rotating at high speed around a horizontal axis.
  • the rotational speed of the drum has a resonance point between the start and about 200 rpm to 400 rpm. Due to the generation vibrations, noise and an increase in energy consumption caused by the vibrations, the drum can hardly be applied at high rotation speed. Therefore, the conventional drum washing machine includes a rotator control device, also referred to as the ball balancer. If the rotation speed of the drum is higher than a natural frequency of the drum, a ball in the ball balancer moves into a reverse position with respect to a movement of the laundry in the drum to eliminate the unbalance caused by the laundry.
  • the behavior of the ball in the ball balancer is controlled so that the ball is arranged on a correct position with respect to the displacement of the laundry, whereby the drum vibration caused by the unbalance state is suppressed.
  • a fluid such as silicone oil, for example, is sealed brought in the ball balancer. This allows the prevention of collision noise of the ball and stabilization of the ball movement in the ball balancer.
  • An optimal control of the washing machine hence depends on knowledge about the ball position in the ball balancer and the position of the laundry in the drum.
  • Document EP 2 821 538 A1 discloses a method of operating a laundry treating appliance comprising accelerating the rotational speed of a drum based on a determined position of balls in a balance ring.
  • the disclosure is based on the idea that by determining an actual viscosity and/or damping factor (corresponding to a temperature) of the fluid, e.g. oil, in the ball balancer, the following spin cycle of the respective appliance can be adapted and thus the appliance can be optimally controlled.
  • a temperature e.g. oil
  • the idea is to determine the viscosity and/or damping of the oil by evaluating the oscillation signals of the oscillating system. These oscillations are caused by unbalances in spinning which are always existing. In the special case of a balancer appliance, the oscillation caused by the laundry unbalance is overlayed by an unbalance oscillation caused by the rotating balancer balls. For a certain constant under-critical speed, the periodical addition and subtraction of the laundry and ball unbalance there is a so-called envelope curve in the observed signal (e.g. motor current, speed, displacement, etc.).
  • the period length can be calculated.
  • the resulting period length is depending on mechanical properties (filling level, surface of the ring, distance between balls and raceway, etc.), the nominal viscosity of the oil at room temperature and the temperature behavior of it and the actual temperature. All influences except the temperature are fixed for certain appliances and the behavior can be determined by experiments. So, the temperature and the corresponding actual viscosity of the oil is proportional to the period length of the envelope curve and can be calculated by a predefined correlation. Based on this information, important decisions about the following spin cycle can be made, e.g. a good starting point and gradient can be chosen for the resonance pass through.
  • the implementation of the above described idea provides a novel mechanism and function to realize a controlled resonance pass through in ball balancer appliances. Such a function facilitates the spinning of small items and reduces the number of needed spin attempts. The actual viscosity/damping is necessary as an input to this function. Additionally, a temperature function may be provided that can avoid the necessity of a direct measurement of temperature, e.g. by using additional sensors.
  • the appliances and devices described hereinafter may be of various types.
  • program-controlled domestic or home appliances may include washing machines, clothes dryers, combined washing/drying machines, drying cabinets, etc.
  • the individual control elements described may be realized by hardware or software components, for example electronic components that can be manufactured by various technologies and include, for example, semiconductor chips, ASICs, microprocessors, digital signal processors, integrated electrical circuits, electro-optical circuits and/or passive components.
  • the invention relates to a home appliance, comprising: a rotary drum fillable with laundry; a ball balancer attached around the rotary drum, wherein the ball balancer is at least partially filled with a fluid embedding one or more free moving balancer balls to balance a laundry unbalance of the rotary drum; a sensor configured to sense an overlay signal generated due to an overlay of the laundry unbalance with an unbalance of the one or more balancer balls; and a controller configured to determine a viscosity of the fluid based on a predetermined correlation of the viscosity of the fluid with the overlay signal.
  • Such a home appliance and corresponding controller provide a novel mechanism and function to realize a controlled resonance pass through in ball balancer appliances. Spinning of small items is facilitated and the number of needed spin attempts can be reduced thereby increasing efficiency of the home appliance.
  • the controller is configured to determine the viscosity of the fluid based on a characteristic oscillation of the overlay signal.
  • the controller is configured to determine the viscosity of the fluid based on an envelope curve of the overlay signal.
  • the controller is configured to determine the viscosity of the fluid based on a period length of the envelope curve.
  • the controller is configured to determine the period length of the envelope curve based on detection of maxima and/or minima of the envelope curve.
  • the controller is configured to determine the viscosity of the fluid based on a predetermined proportionality relation of the viscosity of the fluid with the period length of the envelope curve.
  • the controller is configured to determine the period length of the envelope curve based on predetermined mechanical properties of the home appliance, a filling level of the fluid within the ball balancer, a nominal viscosity of the fluid at room temperature, a known temperature behavior of the fluid and a temperature of the fluid.
  • the controller is further configured to determine a temperature of the fluid based on a predetermined correlation of the fluid with the overlay signal.
  • the controller is configured to determine the temperature of the fluid based on a predetermined proportionality relation of the temperature of the fluid with a period length of an envelope curve of the overlay signal.
  • the senor is configured to sense an electrical drive signal of the rotary drum as the overlay signal.
  • the controller is configured to control an electrical drive signal of the rotary drum based on the determined viscosity of the fluid.
  • the controller is configured to control a spin cycle of the rotary drum based on the determined viscosity of the fluid.
  • the controller is configured to control a resonance pass through of the home appliance based on the determined viscosity of the fluid.
  • the controller is configured to determine a starting point of the rotary drum and a gradient of an electrical signal driving the rotary drum for the resonance pass through of the home appliance.
  • the invention relates to a method for controlling a home appliance comprising a rotary drum fillable with laundry and a ball balancer attached around the rotary drum, wherein the ball balancer is at least partially filled with a fluid embedding one or more free moving balancer balls to balance a laundry unbalance of the rotary drum, wherein the method comprises: sensing an overlay signal generated due to an overlay of the laundry unbalance with an unbalance of the one or more balancer balls; determining a viscosity of the fluid based on a predetermined correlation of the viscosity of the fluid with the overlay signal; and controlling the home appliance based on the determined viscosity of the fluid.
  • Such a method for controlling a home appliance provides a novel mechanism and function to realize a controlled resonance pass through in ball balancer appliances. Spinning of small items is facilitated and the number of needed spin attempts can be reduced thereby increasing efficiency of the method.
  • the invention relates to a controller for controlling a home appliance comprising a rotary drum fillable with laundry and a ball balancer attached around the rotary drum, wherein the ball balancer is at least partially filled with a fluid embedding one or more free moving balancer balls to balance a laundry unbalance of the rotary drum, wherein the controller comprises a circuitry for receiving an overlay signal from a sensor which overlay signal is generated due to an overlay of the laundry unbalance with an unbalance of the one or more balancer balls; a circuitry for determining a viscosity of the fluid based on a predetermined correlation of the viscosity of the fluid with the overlay signal; and a circuitry for controlling the home appliance based on the determined viscosity of the fluid.
  • Such a controller for a home appliance provides a novel mechanism and function to realize a controlled resonance pass through in ball balancer appliances. Spinning of small items is facilitated and the number of needed spin attempts can be reduced thereby increasing efficiency of the home appliance.
  • the invention relates to a computer readable non-transitory medium on which computer instructions are stored which when executed by a computer cause the computer to perform the method according to the second aspect.
  • Embodiments of the invention can be implemented in hardware and/or software.
  • a disclosure in connection with a described method may also hold true for a corresponding device or system configured to perform the method and vice versa.
  • a corresponding device may include a unit to perform the described method step, even if such unit is not explicitly described or illustrated in the figures.
  • the features of the various exemplary aspects described herein may be combined with each other, unless specifically noted otherwise.
  • washing machines such as washing machines, clothes dryers, combined washing/drying machines, drying cabinets, etc. which include a ball balancer.
  • domestic or home appliances are electrical/mechanical machines which accomplish some household functions, such as cleaning or drying. Given a broad usage, the domestic application attached to "home appliance” is tied to the definition of appliance as “an instrument or device designed for a particular use or function". More specifically, “home appliance” can be defined as: “devices or machines, usually electrical, that are in your home and which you use to do jobs such as cleaning or drying”. Home appliances with ball balancer usually include washing machines, dryers or combinations thereof.
  • Fig. 1 shows a schematic diagram illustrating a home appliance 100 according to the disclosure.
  • the home appliance 100 may for example be a washing machine or dryer or a washing/drying combination.
  • the home appliance 100 comprises a rotary drum 101 fillable with laundry 102, a ball balancer 103, a sensor 106, a controller 108 and an electrical drive 110.
  • the ball balancer 103 is attached around the rotary drum 101.
  • the ball balancer 103 is at least partially filled with a fluid 104, e.g. oil, embedding one or more free moving balancer balls 105 to balance a laundry 102 unbalance of the rotary drum 101.
  • the drum 101 may be a cylindrical metal sheet in which mechanical recesses or openings may be formed for attaching the balls 105.
  • the balls 105 may for example be included in a ring around the rotary drum 101 which is at least partially filled with the fluid 104, e.g. oil.
  • the ball balancer may be attached at the top or bottom or along a circumference of the cylindrically shaped rotary drum 101.
  • the sensor 106 is configured to sense an overlay signal 107 which is generated due to an overlay of the laundry 102 unbalance with an unbalance of the one or more balancer balls 105.
  • the controller 108 is configured to determine a viscosity of the fluid 104 based on a predetermined correlation of the viscosity of the fluid 104 with the overlay signal 107, e.g. according to the exemplary curves depicted in Fig. 3b .
  • the controller 108 may determine the viscosity of the fluid (104) based on a characteristic oscillation of the overlay signal 107, e.g. a characteristic oscillation 200 as illustrated in Fig. 2 .
  • the controller 108 may determine the viscosity of the fluid 104 based on an envelope curve of the overlay signal 107, e.g. an envelope curve 206 as illustrated in Fig. 2 .
  • the controller 108 may determine the viscosity of the fluid 104 based on a period length of the envelope curve 206, e.g. a period length 205 as shown in Fig. 2 .
  • the controller 108 may determine the period length 205 of the envelope curve 206 for example based on detection of maxima 202 and/or minima 201 of the envelope curve 206 as shown in Fig. 2 .
  • the controller 108 may be configured to determine the viscosity of the fluid 104 based on a predetermined proportionality relation of the viscosity of the fluid 104 with the period length 205 of the envelope curve 206, e.g. a proportionality relation as shown in Fig. 3b .
  • the controller 108 may be configured to determine the period length 205 of the envelope curve 206 for example based on predetermined mechanical properties of the home appliance 100, a filling level of the fluid 104 within the ball balancer 103, a nominal viscosity of the fluid 104 at room temperature, a known temperature behavior of the fluid 104 and a temperature of the fluid 104.
  • the controller 108 may further be configured to determine a temperature of the fluid 104 based on a predetermined correlation of the fluid 104 with the overlay signal 107, e.g. a predetermined correlation as shown in Fig. 3a .
  • the controller 108 may be configured to determine the temperature of the fluid 104 based on a predetermined proportionality relation of the temperature of the fluid 104 with a period length 205 of an envelope curve 206 of the overlay signal 107, e.g. as shown in Figs. 2 and 3a .
  • the sensor 106 may be configured to sense an electrical drive signal 111 of the rotary drum 101 as the overlay signal 107.
  • the electrical drive signal 111 can be generated by an electrical motor driving the rotary drum 101.
  • This electrical drive signal 111 includes the oscillation property as shown in Fig. 2 and can be used to detect the period length of the oscillation envelope.
  • the controller 108 can control the electrical drive signal 111 of the rotary drum 101, e.g. such that an optimal control of the home appliance with respect to energy efficiency can be achieved.
  • the controller 108 may be configured to control a spin cycle of the rotary drum 101 based on the determined viscosity of the fluid 104.
  • the controller 108 may be configured to control a resonance pass through of the home appliance 100 based on the determined viscosity of the fluid 104.
  • the controller 108 may determine a starting point of the rotary drum 101 and a gradient of an electrical signal 111 driving the rotary drum 101 for the resonance pass through of the home appliance 100. Such function of the controller can guarantee an optimal control of the home appliance 100.
  • the implementation of the above home appliance provides a novel mechanism and function to realize a controlled resonance pass through in ball balancer appliances. Such a function facilitates the spinning of small items and reduces the number of needed spin attempts. The actual viscosity/damping is necessary as an input to this function. Additionally, a temperature function may be provided that can avoid the necessity of a direct measurement of temperature, e.g. by using additional sensors.
  • Fig. 2 shows a schematic diagram illustrating an exemplary oscillation signal 200 generated by a home appliance when the appliance is in operation.
  • the oscillation signal 200 may be a motor current, speed, displacement, etc.
  • the oscillation signal 200 depicted in Fig. 2 illustrates the process how to determine the viscosity and/or damping of the oil.
  • Such an oscillation signal 200 may be caused by unbalances in spinning which are always existing.
  • the oscillation caused by the laundry 102 unbalance is overlayed by an unbalance oscillation caused by the rotating balancer balls 105.
  • the periodical addition and subtraction of the laundry 102 and ball 105 unbalance there is a so-called envelope curve 206 in the observed signal 200 as can be seen from Fig. 2 .
  • This is resulting from the difference in circumferential speed between the drum speed and the speed of the balancer balls 105.
  • the movement of the balls 105 is influenced by friction, the weight of the balls 105, damping of the oil or fluid 104 and so on, and is less than the drum speed.
  • the period length 205 can be calculated.
  • the lower envelope curve can be detected from which the amplitude 204 can be calculated.
  • the maxima 202 of the oscillation signal 200 the upper envelope curve can be detected from which the amplitude 204 can be calculated.
  • the distance in time between two lower (or higher) amplitude values 204 corresponds to the period length 205 as shown in Fig. 2 .
  • the resulting period length 205 is depending on mechanical properties (filling level, surface of the ring, distance between balls 105 and raceway, etc.), the nominal viscosity of the oil or fluid 104 at room temperature and the temperature behavior of it and the actual temperature. All influences except the temperature are fixed for certain appliances and the behavior can be determined by experiments. So, the temperature and the corresponding actual viscosity of the oil or fluid 104 is proportional to the period length 205 of the envelope curve 206 and can be calculated by a predefined correlation, e.g. as shown in Fig. 3b . Based on this information, important decisions about the following spin cycle can be made, e.g. a good starting point and gradient can be chosen for the resonance pass through.
  • the balls 105 are arranged at the optimum position in the ball balancer 103 when a balanced state is reached in which the balls 105 are arranged at the position opposite of the unbalance condition of laundry 102. Such a balanced state is reached at the minima of the oscillation curve 200 depicted in Fig. 2 . In contrast, at the maxima of the oscillation curve 200, balancer balls 105 and laundry 102 are located at the same rotational position which increases the system unbalance.
  • Fig. 3a shows exemplary correlations of the period length of an oscillation signal generated by the home appliance with the temperature for three different rotation speeds of the drum.
  • a first correlation curve 301 is measured at a speed of 100 rotations per minute (rpm).
  • a second correlation curve 302 is measured at a speed of 110 rpm and a third correlation curve 303 is measured at a speed of 120 rpm.
  • the time axis indicates the period length.
  • the third correlation curve 303 indicates that a temperature of 50 °C is correlated with a period length of 15 seconds.
  • the second correlation curve 302 indicates that a temperature of 50 °C is correlated with a period length of 10 seconds.
  • Fig. 3b shows exemplary correlations of the period length of the oscillation signal with the viscosity of the oil within the ball balancer of the home appliance for the three different rotation speeds of the drum.
  • a first correlation curve 304 is measured at a speed of 100 rotations per minute (rpm).
  • a second correlation curve 305 is measured at a speed of 110 rpm and a third correlation curve 306 is measured at a speed of 120 rpm.
  • the time axis indicates the period length.
  • the second correlation curve 305 indicates that a viscosity of about 155 square mm per second is correlated with a period length of 15 seconds and a viscosity of about 95 square mm per second is correlated with a period length of 10 seconds.
  • the first correlation curve 304 indicates that a viscosity of about 80 square mm per second is correlated with a period length of about 7,5 seconds.
  • determining the period length results in the corresponding viscosity when looking up the respective correlation curves 304, 305, 306.
  • Fig. 4 shows a schematic diagram illustrating an exemplary method 400 for controlling a home appliance 100 according to the disclosure.
  • the method 400 may be applied for controlling a home appliance 100 as shown in Fig. 1 comprising a rotary drum 101 fillable with laundry 102 and a ball balancer 103 attached around the rotary drum 101, wherein the ball balancer 103 is at least partially filled with a fluid 104, e.g. oil, embedding one or more free moving balancer balls 105 to balance a laundry 102 unbalance of the rotary drum 101.
  • a fluid 104 e.g. oil
  • the method 400 comprises sensing 401 an overlay signal 107 generated due to an overlay of the laundry 102 unbalance with an unbalance of the one or more balancer balls 105.
  • the method 400 comprises determining 402 a viscosity of the fluid 104 based on a predetermined correlation of the viscosity of the fluid 104 with the overlay signal 107, e.g. as shown in Figure 3b .
  • the method 400 comprises controlling 403 the home appliance 100 based on the determined viscosity of the fluid 104, e.g. as described above with respect to Fig. 1 .
  • Another aspect of the disclosure is related to a computer program product comprising program code for performing the methods and procedures or the functionalities described above, when executed on a computer or a processor.
  • the method may be implemented as program code that may be stored on a non-transitory computer medium.
  • the computer program product may implement the techniques described above.
  • Another aspect of the disclosure is related to a computer readable non-transitory medium on which computer instructions are stored which when executed by a computer cause the computer to perform the method 400 as described above.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (15)

  1. Appareil ménager (100), comprenant :
    un tambour rotatif (101) qu'on peut remplir de linge (102) ;
    un dispositif d'équilibrage à billes (103) fixé autour du tambour rotatif (101), dans lequel le dispositif d'équilibrage à billes (103) est au moins partiellement rempli d'un fluide (104) logeant une ou plusieurs billes d'équilibrage (105) librement mobiles pour compenser un déséquilibre du tambour rotatif (101) causé par le linge (102) ;
    un détecteur (106) réalisé pour détecter un signal de superposition (107) généré en raison d'une superposition du déséquilibre du linge (102) avec un déséquilibre de l'une ou des plusieurs billes d'équilibrage (105) ; et caractérisé par
    un contrôleur (108) réalisé pour déterminer la viscosité du fluide (104) sur base d'une corrélation prédéterminée entre la viscosité du fluide (104) et le signal de superposition (107).
  2. Appareil ménager (100) selon la revendication 1,
    dans lequel le contrôleur (108) est réalisé pour déterminer la viscosité du fluide (104) sur base d'une oscillation caractéristique (200) du signal de superposition (107).
  3. Appareil ménager (100) selon la revendication 1 ou 2,
    dans lequel le contrôleur (108) est réalisé pour déterminer la viscosité du fluide (104) sur base d'une courbe enveloppante (206) du signal de superposition (107).
  4. Appareil ménager (100) selon la revendication 3,
    dans lequel le contrôleur (108) est réalisé pour déterminer la viscosité du fluide (104) sur base d'une longueur de période (205) de la courbe enveloppante (206).
  5. Appareil ménager (100) selon la revendication 4,
    dans lequel le contrôleur (108) est réalisé pour déterminer la longueur de période (205) de la courbe enveloppante (206) sur base de la détection de maxima (202) et/ou de minima (201) de la courbe enveloppante (206).
  6. Appareil ménager (100) selon la revendication 4 ou 5,
    dans lequel le contrôleur (108) est réalisé pour déterminer la viscosité du fluide (104) sur base d'un rapport prédéterminé de proportionnalité de viscosité du fluide (104) à longueur de période (205) de la courbe enveloppante (206).
  7. Appareil ménager (100) selon l'une des revendications 4 à 6,
    dans lequel le contrôleur (108) est réalisé pour déterminer la longueur de période (205) de la courbe enveloppante (206) sur base de propriétés mécaniques prédéterminées de l'appareil ménager (100), le niveau de remplissage du fluide (104) dans le dispositif d'équilibrage à billes (103), la viscosité nominale du fluide (104) à température ambiante, un comportement connu de température du fluide (104) et la température du fluide (104).
  8. Appareil ménager (100) selon l'une des revendications précédentes,
    dans lequel le contrôleur (108) est en outre réalisé pour déterminer la température du fluide (104) sur base d'une corrélation prédéterminée entre le fluide (104) et le signal de superposition (107).
  9. Appareil ménager (100) selon la revendication 8,
    dans lequel le contrôleur (108) est réalisé pour déterminer la température du fluide (104) sur base d'un rapport prédéterminé de proportionnalité de température du fluide (104) à longueur de période (205) d'une courbe enveloppante (206) du signal de superposition (107).
  10. Appareil ménager (100) selon l'une des revendications précédentes,
    dans lequel le détecteur (106) est réalisé pour détecter un signal d'entraînement électrique (111) du tambour rotatif (101) comme le signal de superposition (107).
  11. Appareil ménager (100) selon l'une des revendications précédentes,
    dans lequel le contrôleur (108) est réalisé pour contrôler le signal d'entraînement électrique (111) du tambour rotatif (101) sur base de la viscosité déterminée du fluide (104).
  12. Appareil ménager (100) selon l'une des revendications précédentes,
    dans lequel le contrôleur (108) est réalisé pour contrôler le cycle d'essorage du tambour rotatif (101) sur base de la viscosité déterminée du fluide (104).
  13. Appareil ménager (100) selon l'une des revendications précédentes,
    dans lequel le contrôleur (108) est réalisé pour contrôler une passe de résonance à travers l'appareil ménager (100) sur base de la viscosité déterminée du fluide (104).
  14. Appareil ménager (100) selon la revendication 13,
    dans lequel le contrôleur (108) est réalisé pour déterminer le point de départ du tambour rotatif (101) et le gradient d'un signal électrique (111) commandant le tambour rotatif (101) pour la passe de résonance à travers l'appareil ménager (100).
  15. Procédé (400) de commande d'un appareil ménager (100) comprenant un tambour rotatif (101) qu'on peut remplir de linge (102) et un dispositif d'équilibrage à billes (103) fixé autour du tambour rotatif (101), dans lequel le dispositif d'équilibrage à billes (103) est au moins partiellement rempli d'un fluide (104) logeant une ou plusieurs billes d'équilibrage (105) librement mobiles pour compenser un déséquilibre du tambour rotatif (101) causé par le linge (102), dans lequel le procédé (400) comprend :
    la détection (401) d'un signal de superposition (107) généré en raison de la superposition du déséquilibre du linge (102) avec un déséquilibre de l'une ou des plusieurs billes d'équilibrage (105) ;
    le procédé étant caractérisé par
    la détermination (402) de la viscosité du fluide (104) sur base d'une corrélation prédéterminée entre la viscosité du fluide (104) et le signal de superposition (107) ; et
    le contrôle (403) de l'appareil ménager (100) sur base de la viscosité déterminée du fluide (104).
EP19159962.0A 2019-02-28 2019-02-28 Appareil domestique comportant un dispositif d'équilibrage à billes et un contrôle de la viscosité des fluides Active EP3702509B1 (fr)

Priority Applications (3)

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EP19159962.0A EP3702509B1 (fr) 2019-02-28 2019-02-28 Appareil domestique comportant un dispositif d'équilibrage à billes et un contrôle de la viscosité des fluides
PL19159962T PL3702509T3 (pl) 2019-02-28 2019-02-28 Domowe urządzenie z balanserem kulowym i sterowaniem lepkością cieczy
CN202010119546.4A CN111621958B (zh) 2019-02-28 2020-02-26 带有球平衡器和流体粘度控制的家用器具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19159962.0A EP3702509B1 (fr) 2019-02-28 2019-02-28 Appareil domestique comportant un dispositif d'équilibrage à billes et un contrôle de la viscosité des fluides

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CN111621958A (zh) 2020-09-04
PL3702509T3 (pl) 2022-01-24
EP3702509A1 (fr) 2020-09-02

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