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WO2012119842A1 - Procédé et dispositif de séchage d'un article - Google Patents

Procédé et dispositif de séchage d'un article Download PDF

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Publication number
WO2012119842A1
WO2012119842A1 PCT/EP2012/052582 EP2012052582W WO2012119842A1 WO 2012119842 A1 WO2012119842 A1 WO 2012119842A1 EP 2012052582 W EP2012052582 W EP 2012052582W WO 2012119842 A1 WO2012119842 A1 WO 2012119842A1
Authority
WO
WIPO (PCT)
Prior art keywords
drying
treatment chamber
rotational speed
process air
motor
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.)
Ceased
Application number
PCT/EP2012/052582
Other languages
German (de)
English (en)
Inventor
Uwe-Jens Krausch
Günter Steffens
Andreas Stolze
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
Original Assignee
BSH Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of WO2012119842A1 publication Critical patent/WO2012119842A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • D06F58/30—Drying processes 
    • 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
    • D06F2103/36—Flow or velocity
    • 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
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/08—Driving arrangements

Definitions

  • the invention relates to a method for drying a product in a moving treatment chamber by means of a process air guided by the blower through the treatment chamber, wherein the treatment chamber and the blower are driven by a rotating motor, which is controlled by a control device, wherein the control device also drying of the goods.
  • the invention also relates to a device for drying a product, comprising a movable treatment chamber for introducing the material, a fan for passing process air through the treatment chamber, a motor, through which the treatment chamber and the fan are drivable, and a control device, which controls is for controlling the engine and drying the goods.
  • a clothes dryer which has a single motor for driving the fan and designed as a rotatable cylindrical drum treatment chamber.
  • the motor is an asynchronous motor and is controlled only in such a way that it is switched on and off.
  • the engine is configured to exhibit a defined low speed change with varying load when operating at a speed near a predetermined operating speed. This behavior is exploited to advantageously further enhance the drying of laundry items.
  • the items of laundry become lighter due to the evaporation of the moisture contained and thereby cause a reduced power requirement for driving the drum, whereupon the motor responds by a corresponding increase in its speed.
  • the invention is based on the object to provide further developments of the method and the device of each type initially defined. These developments are intended to preserve the simplicity of the generic system as possible. In particular, synchronous motors can be used.
  • a method and a device according to respective independent claim Preferred developments of the invention are defined in corresponding dependent claims, preferred embodiments of the method corresponding to preferred developments of the device and vice versa, even if this is not explicitly stated here.
  • the motor is a synchronous motor, and that a rotational speed of the synchronous motor during drying of the material is significantly increased over a rotational speed at the start of drying.
  • the device according to the invention for drying a product comprising a movable treatment chamber for introducing the material, a blower for passing process air through the treatment chamber, a motor through which the treatment chamber and the blower are drivable, and a control device, which control device is arranged to control the motor and to dry the material
  • the motor is a synchronous motor
  • the control device is set up to clearly detect a rotational speed of the synchronous motor during drying of the product relative to a rotational speed at the beginning of the drying to increase.
  • the invention is based on the recognition that a synchronous motor can be used as the only motor for driving the treatment chamber and the blower for the process air by taking advantage of the flexibility resulting from the possibility of setting the rotational speed or speed to the engine under the Requirements of drying the goods to operate specially adapted conditions.
  • the control device according to the invention then works that the rotational speed of the synchronous motor is increased during the drying of the goods. Initially, the rotational speed is initially low (of any possible transients when turning on the engine is not), so that the transported with the process air to the moist good in the treatment chamber heat the goods and the treatment chamber can heat up quickly.
  • the speed of rotation can be increased to provide a still slightly increased flow of process air while drying, which quickly removes the moisture vaporized from the material, the reducing mechanical load of the drying material being the power requirement for increasing the speed of rotation advantageously more or less compensated.
  • This increased flow of process air also compensates for aerodynamic drag that increases as the laundry dries.
  • a recourse to the use of a separate motor for the treatment chamber and the blower can be inventively avoided, as well as the use of complex and complex sensor and associated control program for controlling the process of drying.
  • a power of the synchronous motor during drying by the control device measured and kept constant.
  • a power measurement is possible in particular directly by a synchronous motor upstream control circuit and does not affect the desired simplicity of the system.
  • it may be provided by a power sensor associated with the control device for measuring the power supplied to the synchronous motor, wherein the control device is also configured to measure the power and to keep the power constant during the drying of the goods.
  • the rotational speed of the synchronous motor is increased several times during drying.
  • a real regulation of the drying is no longer necessary, at least as far as the control of the engine, and it is achieved a particularly simple, yet task-appropriate system.
  • the rotational speed is increased four times.
  • the rotational speed at the end of the drying is about 115% of the rotational speed at the beginning of the drying.
  • a time interval is predetermined for drying the goods, and for the first time an increase in the rotational speed takes place after 60% of this time interval has elapsed.
  • the treatment chamber is a rotatable drum, and that the rotational speed of the drum during drying always remains below an application rotational speed of the drum.
  • the application speed of the drum is defined as the rotational speed at which the centrifugal force developed on the inside of the drum is equal to the gravitational force.
  • the process air is guided in a substantially closed circuit, in which it is cooled and dehumidified after discharge from the treatment chamber and heated before re-introduction into the treatment chamber.
  • a process air duct is provided for guiding the process air, in which the treatment chamber and the blower are included.
  • a conditioning device which comprises a heat source arranged in the process air duct for heating the process air before it enters the treatment chamber.
  • This conditioning device more preferably comprises a heat sink for cooling and dehumidifying the process air after it has exited the treatment chamber.
  • the heat source and the heat sink form the conditioning device, by which the circulating process air is cyclically repeatedly heated and cooled to condition it on the one hand to absorb moisture from the material to be dried and on the other hand for discharging such absorbed moisture in the heat sink.
  • the heat source and the heat sink can basically be designed arbitrarily and do not necessarily have to have a further functional connection with each other.
  • the heat source and the heat sink belong to a heat pump with which heat can be pumped from the heat sink to the heat source.
  • the heat pump serves to absorb heat, which is withdrawn from the process air in the heat sink at low temperature, and to pump to the heat source, where it is returned to the process air at high temperature.
  • This pumping process requires the supply of some extra power, but this may be much less than the total power that is supplied to the process air in the heat source.
  • the heat pump enables a drying process with significantly less use of power than a drying process in which the energy supplied to the process air in the heat source is completely generated from a corresponding energy source such as electric current and fuel gas.
  • the process air duct is substantially closed in itself. This means that it is largely sealed against its environment, but in it, apart from pressure gradients that are unavoidable for the purpose of guiding the process air, there is no pressure substantially different from the pressure in its environment.
  • control device is set up for repeatedly increasing a rotational speed of the synchronous motor during the drying of the goods.
  • the treatment chamber is a rotatable drum.
  • the blower is a rotary blower.
  • the synchronous motor on a permanent magnetic rotor therefore requires no supply of electrical current to its rotor and thus makes a commutator superfluous.
  • this is implemented in a household appliance for drying a good, which is laundry.
  • FIG. 1 of the drawing shows a schematic representation of a device designed as a domestic appliance for drying laundry.
  • the device 1 shown in Figure 1 is used for drying a good 2, which is a post of laundry 2.
  • This good 2 is located in a treatment chamber 3, which is designed here as a rotatable drum 3.
  • a stream of process air is conducted past the material 2 by means of a blower 4, here embodied as a rotary blower, in order to evaporate and remove moisture contained therein.
  • a motor 5, here embodied as a synchronous motor 5, is provided to drive both the drum 3 and the fan 4.
  • the motor 5 is controllable by a control device 6, embodied here as a programmed semiconductor circuit and in addition to devices which includes control devices and displays for controlling the device 1 and all its components for carrying out drying processes, by means of which a user selects a drying process for execution and as required or desirable, can specify process parameters. While the motor 5 directly drives the blower 4 in the present case, it drives the drum 3 via a gearbox 7, which gearbox 7 compresses the relatively high speed of the motor 5 into the relatively low speed of the drum 3.
  • a substantially self-contained process air duct 8 which is largely sealed against its environment, in which but apart from pressure gradients that are unavoidable for proper management of the process air, there is no pressure substantially different from the pressure in its environment.
  • a lint filter 9 serves to filter out finely divided suspended matter such as fragments of textile fibers and the like, which entrains the process air from the drying material 2, from the process air. After completion of a drying process, the lint filter 9 is to be cleaned of such lint, in order not to impair subsequent drying processes by an increased flow resistance.
  • the process air duct 8 contains a heat source 10 through which heat can be supplied to the process air before it reaches the product 2 to be dried.
  • the process air channel 8 includes a heat sink 11, through which the process air heat is withdrawn after it has flowed through the drum 3 with the material to be dried 2.
  • the moisture entrained in gaseous form from the process air condense to become so liquid form precipitated on not shown here corresponding structures of the heat sink 11 and removed from the circulating process air and collected for disposal.
  • the heat source 10 and the heat sink 11 form a conditioning device 10, 11, with which the circulating process air is cyclically repeatedly heated and cooled, on the one hand for receiving moisture from the material to be dried 2 and on the other hand for discharging such absorbed moisture in the heat sink 11 to condition.
  • the heat source 10 and the heat sink 11 can be designed arbitrarily and do not necessarily have to have a further functional connection with each other.
  • the heat source 10 and the heat sink 1 1 are combined in a heat pump 10, 11, 12, 13, 14, wherein the heat pump 10, 11, 12, 13, 14 thereto serves to absorb heat, which is withdrawn from the process air in the heat sink 11 at low temperature, and to pump to the heat source 10, where it is returned to the process air at high temperature.
  • This pumping process requires the supply of some additional power, but this may be substantially less than the total power supplied to the process air in the heat source 10.
  • the heat pump 10, 11, 12, 13, 14 enables a drying process with significantly less use of power than a drying process in which the energy supplied to the process air in the heat source 10 is completely generated from a corresponding energy source such as electric current and fuel gas.
  • the pumping process is carried out here by cyclically repeated evaporation and liquefaction of a refrigerant which circulates in a corresponding refrigerant channel 12 in a closed circuit.
  • the refrigerant passes in liquid form and under low pressure in the heat sink 11, where it evaporates and absorbs heat from the process air. Therefore, the heat sink 11 may be referred to herein as "evaporator" 11.
  • the refrigerant gas enters the compressor 13, compressing it to a high pressure, and further driving it through the refrigerant passage 12.
  • the heat source 10 can therefore also be referred to herein as "condenser" 10.
  • the refrigerant passes in liquid form to a Expander 14, which can be designed in particular as a diaphragm, throttle valve or capillary and serves to reduce the pressure of the refrigerant. This also reduces the temperature of the refrigerant, and it turns into a partly liquid and partly gaseous mixture.
  • refrigerant is in particular fluorinated hydrocarbons and mixtures of such compounds, as are known under the names R134a, R152a, R407C and R410A.
  • propane which is also known as R290, but in view of its flammability, however, can only be used under special security measures.
  • heat pumps of a type other than the heat pump 10, 11, 12, 13, 14 of the compressor type presented here are also known and conceivable for use in the device 1 described here.
  • the control device 6 is set up to operate the device 1 and in particular programmed such that the rotational speed of the synchronous motor 5 is increased during the drying of the material 2.
  • the rotational speed is initially low (apart from any possible transients when switching on the motor 5), so that the transported with the process air to the moist material 2 in the treatment chamber 3 heat the Good 2 and the treatment chamber 3 can heat up quickly.
  • the rotational speed is increased to provide at least a slightly increased flow of process air drying material 2, which quickly removes moisture evaporated from the Good 2, wherein the reducing mechanical load of the drying material 2, the power requirement to increase the rotational speed advantageously more or less compensated.
  • a recourse to the use of a separate motor for the treatment chamber and the blower has therefore been avoided, as well as the use of complex and complex sensors and associated control program for controlling the process of drying.
  • a power of the synchronous motor 5 is measured during the drying by the control device 6 and kept constant.
  • Such Power measurement does not affect the desired simplicity of the system. It is effected by the power sensor 15 provided in a control circuit for the motor 5, wherein furthermore the control device 6 is set up to measure the power and to keep the power constant during the drying of the material 2.
  • This development advantageously takes advantage of the power requirement for driving the motor Treatment chamber 3 during the progress of the drying decreases, so that the no longer required for driving the treatment chamber 3 power immediately and undiminished the blower 4 to increase the flow of process air is good.
  • a speed sensor 16 corresponding to the power sensor 15 is provided in the control device 6, by means of which the rotational speed of the motor 5 can be measured. The speed sensor 16 can be used in particular for operational monitoring of the engine 5.
  • the rotational speed of the synchronous motor 5 is increased several times.
  • a real regulation of the drying is no longer necessary, at least as far as the control of the motor 5, and it is achieved a particularly simple, yet task-appropriate system.
  • the rotational speed is increased four times.
  • the rotational speed at the end of the drying is about 115% of the rotational speed at the beginning of the drying.
  • a drying time interval is predetermined, and for the first time the rotational speed is increased after 60% of this time interval has elapsed.
  • the rotational speed of the treatment chamber 3 designed as a rotatable drum 3 always remains below an application rotational speed of the drum 3 during drying, wherein the application speed of the drum 3 is defined as the rotational speed at which the centrifugal force developed on the inside of the drum 3 is equal to gravity.
  • Laundry 2, which is located in the rotating drum 3 and is supported by this against gravity, then no longer detaches from the drum 3, but remains inside this lying when it is rotated at a rotational speed above the application speed.
  • the fact that the rotational speed of the drum 3 is kept below the application rotational speed, is prevented the laundry 2 inside creates the drum 3 and thus can be flowed around only incomplete by the flowing process air.
  • the motor 5 is a permanent magnet rotor 17 (here symbolized by the end of a pin visible in Figure 1 to which the gearbox 7 is connected.) Accordingly, this motor 5 does not require any supply of electric current to its rotor 17 1, so that the connection 18 symbolized by a dashed line between the control device 6 and the motor 5 only has to be connected to stationary parts of the motor 5.
  • Such motors 5 are also known under the designations "BLDC” ("brushless DC”). ) and “PMS" ("permanent magnetic synchronous motor”).
  • the invention is not limited to the preferred embodiments described herein. Also in its scope are and in particular the execution in a dryer with a wholly or partially open process air duct, in particular a vented dryer, and the execution in a dryer, which has no heat pump.
  • a synchronous motor can be used as the only motor for driving the treatment chamber and the blower for the process air by eliminating the possibility of specifying the rotational speed or speed Speed resulting flexibility is exploited to operate the engine under the requirements of the drying of the goods specially adapted conditions.
  • only simple, preferably already available, means are used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

L'invention concerne un procédé de séchage d'un article (2) dans une chambre de traitement mobile (3) par un air de traitement acheminé à travers la chambre de traitement (3) au moyen d'une soufflante (4), la chambre de traitement (3) et la soufflante (4) étant entraînées par un moteur rotatif (5) commandé par un dispositif de commande (6), le dispositif de commande (6) commandant également le séchage de l'article (2). Le moteur (5) est un moteur synchrone (5) et une vitesse de rotation du moteur synchrone (5) pendant le séchage de l'article (2) est nettement supérieure à une vitesse de rotation au début du séchage. L'invention concerne également un dispositif (1) servant à la mise en œuvre de ce procédé.
PCT/EP2012/052582 2011-03-07 2012-02-15 Procédé et dispositif de séchage d'un article Ceased WO2012119842A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011005164.3 2011-03-07
DE102011005164A DE102011005164A1 (de) 2011-03-07 2011-03-07 Verfahren und Vorrichtung zum Trocknen eines Gutes

Publications (1)

Publication Number Publication Date
WO2012119842A1 true WO2012119842A1 (fr) 2012-09-13

Family

ID=45607753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/052582 Ceased WO2012119842A1 (fr) 2011-03-07 2012-02-15 Procédé et dispositif de séchage d'un article

Country Status (2)

Country Link
DE (1) DE102011005164A1 (fr)
WO (1) WO2012119842A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013167486A3 (fr) * 2012-05-09 2014-05-08 BSH Bosch und Siemens Hausgeräte GmbH Procédé permettant de faire fonctionner un sèche-linge à régime variable du moteur pendant une phase de chauffe et sèche-linge permettant la mise en oeuvre dudit procédé
CN113572309A (zh) * 2021-07-26 2021-10-29 佛山市朗特电机有限公司 一种永磁磁阻混合转子结构的同步电机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2716810B1 (fr) * 2012-10-05 2017-02-22 Electrolux Home Products Corporation N.V. Procédé pour commander le cycle de séchage d'un sèche-linge en fonction de la charge et sèche-linge correspondant
EP2735642A1 (fr) * 2012-11-26 2014-05-28 Electrolux Home Products Corporation N.V. Procédé pour commander un sèche-linge avec une vitesse de rotation de tambour variable et vitesse de rotation du ventilateur variable
EP2735641A1 (fr) * 2012-11-26 2014-05-28 Electrolux Home Products Corporation N.V. Procédé pour commander un sèche-linge comprenant un moteur à tambour de ventilateur ou un moteur de ventilateur à vitesse variable
EP2735643A1 (fr) * 2012-11-26 2014-05-28 Electrolux Home Products Corporation N.V. Procédé pour commander un sèche-linge comprenant un moteur de ventilateur à vitesse variable pour entraîner un flux d'air de séchage
EP2789728B1 (fr) 2013-04-08 2017-06-28 Electrolux Appliances Aktiebolag Procédé pour commander le moteur d'un sèche-linge

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Publication number Priority date Publication date Assignee Title
EP1633039A1 (fr) 2004-09-06 2006-03-08 BSH Bosch und Siemens Hausgeräte GmbH Procédé de commande d'un moteur électrique et un dispositif d'entraînement pour mettre en oeuvre le procédé
WO2007051690A1 (fr) 2005-11-07 2007-05-10 BSH Bosch und Siemens Hausgeräte GmbH Procede et circuit de commande du fonctionnement d'un moteur electrique d'un appareil electrique, notamment d'un appareil electrique menager et circuit de commutation d'interface employe au cours de ce procede
DE102009028011A1 (de) 2008-08-21 2010-02-25 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einem elektrischen Motor
EP2221412A1 (fr) * 2009-02-24 2010-08-25 BSH Bosch und Siemens Hausgeräte GmbH Procédé de surveillance d'un chargement d'un tambour de lavage et/ou d'un degré de séchage de pièces de linge et agencement de commutation correspondant
EP2281935A1 (fr) * 2009-08-07 2011-02-09 BSH Bosch und Siemens Hausgeräte GmbH appareil ménager avec un moteur électrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101253641B1 (ko) * 2006-04-17 2013-04-10 엘지전자 주식회사 건조장치 및 그 제어 방법
JP2009066113A (ja) * 2007-09-12 2009-04-02 Sanyo Electric Co Ltd 衣類用乾燥装置
DE102008019921A1 (de) * 2008-04-21 2009-10-22 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Trocknung von Wäschestücken und Verfahren zum Betreiben eines derartigen Hausgeräts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1633039A1 (fr) 2004-09-06 2006-03-08 BSH Bosch und Siemens Hausgeräte GmbH Procédé de commande d'un moteur électrique et un dispositif d'entraînement pour mettre en oeuvre le procédé
WO2007051690A1 (fr) 2005-11-07 2007-05-10 BSH Bosch und Siemens Hausgeräte GmbH Procede et circuit de commande du fonctionnement d'un moteur electrique d'un appareil electrique, notamment d'un appareil electrique menager et circuit de commutation d'interface employe au cours de ce procede
DE102009028011A1 (de) 2008-08-21 2010-02-25 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einem elektrischen Motor
EP2221412A1 (fr) * 2009-02-24 2010-08-25 BSH Bosch und Siemens Hausgeräte GmbH Procédé de surveillance d'un chargement d'un tambour de lavage et/ou d'un degré de séchage de pièces de linge et agencement de commutation correspondant
EP2281935A1 (fr) * 2009-08-07 2011-02-09 BSH Bosch und Siemens Hausgeräte GmbH appareil ménager avec un moteur électrique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013167486A3 (fr) * 2012-05-09 2014-05-08 BSH Bosch und Siemens Hausgeräte GmbH Procédé permettant de faire fonctionner un sèche-linge à régime variable du moteur pendant une phase de chauffe et sèche-linge permettant la mise en oeuvre dudit procédé
CN113572309A (zh) * 2021-07-26 2021-10-29 佛山市朗特电机有限公司 一种永磁磁阻混合转子结构的同步电机

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